diff --git a/build/bakefiles/config.bkl b/build/bakefiles/config.bkl
index bf295d7ec2..587f2b35b6 100644
--- a/build/bakefiles/config.bkl
+++ b/build/bakefiles/config.bkl
@@ -509,15 +509,6 @@ it if SHARED=1 unless you know what you are doing.
     </if>
 
     <if cond="FORMAT=='mingw'">
-        <option name="GCC_VERSION">
-            <values>3,2.95</values>
-            <default-value>3</default-value>
-            <description>
-Set the version of your Mingw installation here.
-    "3" ...... this is for Mingw 2.0 or newer (comes with gcc3)
-    "2.95" ... for Mingw 1.1 or any of the older versions
-            </description>
-        </option>
         <option name="WINDRES">
             <default-value>windres</default-value>
             <description>
@@ -525,10 +516,6 @@ Windows resource compiler to use, possibly including extra options.
 For example, add "-F pe-i386" here if using 64 bit windres for 32 bit build.
             </description>
         </option>
-        <set var="GCCFLAGS">
-            <if cond="GCC_VERSION=='2.95'">-fvtable-thunks</if>
-        </set>
-        <set var="EXTRACFLAGS">$(GCCFLAGS) -DHAVE_W32API_H</set>
     </if>
 
 
diff --git a/build/bakefiles/wxpresets/presets/wx_win32.bkl b/build/bakefiles/wxpresets/presets/wx_win32.bkl
index 97e6416064..45ba5c5167 100644
--- a/build/bakefiles/wxpresets/presets/wx_win32.bkl
+++ b/build/bakefiles/wxpresets/presets/wx_win32.bkl
@@ -241,7 +241,6 @@
     <template id="wx-lib">
         <!--                    MISCELLANEOUS                       -->
         <if cond="FORMAT=='mingw'">
-            <define>HAVE_W32API_H</define>
             <ldflags>-mthreads</ldflags>
         </if>
 
diff --git a/build/cmake/setup.cmake b/build/cmake/setup.cmake
index 37c6af78d2..18556f077a 100644
--- a/build/cmake/setup.cmake
+++ b/build/cmake/setup.cmake
@@ -610,7 +610,6 @@ check_include_file(fcntl.h HAVE_FCNTL_H)
 check_include_file(langinfo.h HAVE_LANGINFO_H)
 check_include_file(sched.h HAVE_SCHED_H)
 check_include_file(unistd.h HAVE_UNISTD_H)
-check_include_file(w32api.h HAVE_W32API_H)
 check_include_file(wchar.h HAVE_WCHAR_H)
 check_include_file(wcstr.h HAVE_WCSTR_H)
 
diff --git a/build/cmake/setup.h.in b/build/cmake/setup.h.in
index b71e097360..649c41e1fe 100644
--- a/build/cmake/setup.h.in
+++ b/build/cmake/setup.h.in
@@ -1201,9 +1201,6 @@
 /* Define if you have the <langinfo.h> header file.  */
 #cmakedefine HAVE_LANGINFO_H 1
 
-/* Define if you have the <w32api.h> header file (mingw,cygwin).  */
-#cmakedefine HAVE_W32API_H 1
-
 /* Define if you have the <sys/soundcard.h> header file. */
 #cmakedefine HAVE_SYS_SOUNDCARD_H 1
 
diff --git a/build/msw/config.gcc b/build/msw/config.gcc
index 7c37042309..cadb29cb49 100644
--- a/build/msw/config.gcc
+++ b/build/msw/config.gcc
@@ -138,11 +138,6 @@ CFG ?=
 # it if SHARED=1 unless you know what you are doing. [dynamic,static]
 RUNTIME_LIBS ?= dynamic
 
-# Set the version of your Mingw installation here.
-#     "3" ...... this is for Mingw 2.0 or newer (comes with gcc3)
-#     "2.95" ... for Mingw 1.1 or any of the older versions [3,2.95]
-GCC_VERSION ?= 3
-
 # Windows resource compiler to use, possibly including extra options.
 # For example, add "-F pe-i386" here if using 64 bit windres for 32 bit build. 
 WINDRES ?= windres
diff --git a/build/msw/makefile.gcc b/build/msw/makefile.gcc
index a5488e00a1..35962cd38b 100644
--- a/build/msw/makefile.gcc
+++ b/build/msw/makefile.gcc
@@ -29,8 +29,7 @@ MAKEARGS = LINK_DLL_FLAGS="$(LINK_DLL_FLAGS)" \
 	USE_THREADS="$(USE_THREADS)" USE_CAIRO="$(USE_CAIRO)" \
 	OFFICIAL_BUILD="$(OFFICIAL_BUILD)" VENDOR="$(VENDOR)" \
 	WX_FLAVOUR="$(WX_FLAVOUR)" WX_LIB_FLAVOUR="$(WX_LIB_FLAVOUR)" CFG="$(CFG)" \
-	RUNTIME_LIBS="$(RUNTIME_LIBS)" GCC_VERSION="$(GCC_VERSION)" \
-	WINDRES="$(WINDRES)"
+	RUNTIME_LIBS="$(RUNTIME_LIBS)" WINDRES="$(WINDRES)"
 CPPDEPS = -MT$@ -MF$@.d -MD -MP
 WX_RELEASE_NODOT = 31
 WX_VERSION_NODOT = $(WX_RELEASE_NODOT)5
@@ -41,16 +40,16 @@ LIBDIRNAME = \
 	..\..\lib\$(COMPILER_PREFIX)$(COMPILER_VERSION)_$(LIBTYPE_SUFFIX)$(CFG)
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
-WXREGEX_CFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -DNDEBUG -I..\..\include -I$(SETUPHDIR) -D__WXMSW__ \
-	$(__WXUNIV_DEFINE_p) $(__UNICODE_DEFINE_p) $(CPPFLAGS) $(CFLAGS)
+WXREGEX_CFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -DNDEBUG \
+	-I..\..\include -I$(SETUPHDIR) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) $(CPPFLAGS) $(CFLAGS)
 WXREGEX_OBJECTS =  \
 	$(OBJS)\wxregex_regcomp.o \
 	$(OBJS)\wxregex_regexec.o \
 	$(OBJS)\wxregex_regerror.o \
 	$(OBJS)\wxregex_regfree.o
-WXZLIB_CFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -DNDEBUG $(CPPFLAGS) $(CFLAGS)
+WXZLIB_CFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -DNDEBUG \
+	$(CPPFLAGS) $(CFLAGS)
 WXZLIB_OBJECTS =  \
 	$(OBJS)\wxzlib_adler32.o \
 	$(OBJS)\wxzlib_compress.o \
@@ -67,9 +66,8 @@ WXZLIB_OBJECTS =  \
 	$(OBJS)\wxzlib_trees.o \
 	$(OBJS)\wxzlib_uncompr.o \
 	$(OBJS)\wxzlib_zutil.o
-WXPNG_CFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -DNDEBUG -I..\..\src\zlib -DPNG_INTEL_SSE $(CPPFLAGS) \
-	$(CFLAGS)
+WXPNG_CFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -DNDEBUG \
+	-I..\..\src\zlib -DPNG_INTEL_SSE $(CPPFLAGS) $(CFLAGS)
 WXPNG_OBJECTS =  \
 	$(OBJS)\wxpng_png.o \
 	$(OBJS)\wxpng_pngerror.o \
@@ -95,8 +93,8 @@ WXPNG_OBJECTS =  \
 	$(OBJS)\wxpng_mips_init.o \
 	$(OBJS)\wxpng_filter_vsx_intrinsics.o \
 	$(OBJS)\wxpng_powerpc_init.o
-WXJPEG_CFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -DNDEBUG -I$(SETUPHDIR) $(CPPFLAGS) $(CFLAGS)
+WXJPEG_CFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -DNDEBUG \
+	-I$(SETUPHDIR) $(CPPFLAGS) $(CFLAGS)
 WXJPEG_OBJECTS =  \
 	$(OBJS)\wxjpeg_jaricom.o \
 	$(OBJS)\wxjpeg_jcapimin.o \
@@ -144,9 +142,9 @@ WXJPEG_OBJECTS =  \
 	$(OBJS)\wxjpeg_jquant1.o \
 	$(OBJS)\wxjpeg_jquant2.o \
 	$(OBJS)\wxjpeg_jutils.o
-WXTIFF_CFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -DNDEBUG -I..\..\src\zlib -I..\..\src\jpeg \
-	-I..\..\src\tiff\libtiff $(CPPFLAGS) $(CFLAGS)
+WXTIFF_CFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -DNDEBUG \
+	-I..\..\src\zlib -I..\..\src\jpeg -I..\..\src\tiff\libtiff $(CPPFLAGS) \
+	$(CFLAGS)
 WXTIFF_OBJECTS =  \
 	$(OBJS)\wxtiff_tif_win32.o \
 	$(OBJS)\wxtiff_tif_aux.o \
@@ -189,14 +187,14 @@ WXTIFF_OBJECTS =  \
 	$(OBJS)\wxtiff_tif_write.o \
 	$(OBJS)\wxtiff_tif_zip.o \
 	$(OBJS)\wxtiff_tif_zstd.o
-WXEXPAT_CFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -DNDEBUG -I$(LIBDIRNAME) $(CPPFLAGS) $(CFLAGS)
+WXEXPAT_CFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -DNDEBUG \
+	-I$(LIBDIRNAME) $(CPPFLAGS) $(CFLAGS)
 WXEXPAT_OBJECTS =  \
 	$(OBJS)\wxexpat_xmlparse.o \
 	$(OBJS)\wxexpat_xmlrole.o \
 	$(OBJS)\wxexpat_xmltok.o
 WXSCINTILLA_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -DNDEBUG -I..\..\src\stc\scintilla\include \
+	-DNDEBUG -I..\..\src\stc\scintilla\include \
 	-I..\..\src\stc\scintilla\lexlib -I..\..\src\stc\scintilla\src -D__WX__ \
 	-DSCI_LEXER -DNO_CXX11_REGEX -DLINK_LEXERS -I$(SETUPHDIR) -I..\..\include \
 	$(__wxscintilla_usingdll_p) -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
@@ -347,20 +345,20 @@ WXSCINTILLA_OBJECTS =  \
 	$(OBJS)\wxscintilla_XPM.o
 MONODLL_CFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING \
 	-I..\..\src\stc\scintilla\include -I..\..\src\stc\scintilla\lexlib \
 	-I..\..\src\stc\scintilla\src -D__WX__ -DSCI_LEXER -DNO_CXX11_REGEX \
 	-DLINK_LEXERS -DwxUSE_BASE=1 -DWXMAKINGDLL $(CPPFLAGS) $(CFLAGS)
 MONODLL_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING \
 	-I..\..\src\stc\scintilla\include -I..\..\src\stc\scintilla\lexlib \
 	-I..\..\src\stc\scintilla\src -D__WX__ -DSCI_LEXER -DNO_CXX11_REGEX \
@@ -500,20 +498,20 @@ MONODLL_OBJECTS =  \
 	$(OBJS)\monodll_version_rc.o
 MONOLIB_CFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING \
 	-I..\..\src\stc\scintilla\include -I..\..\src\stc\scintilla\lexlib \
 	-I..\..\src\stc\scintilla\src -D__WX__ -DSCI_LEXER -DNO_CXX11_REGEX \
 	-DLINK_LEXERS -DwxUSE_BASE=1 $(CPPFLAGS) $(CFLAGS)
 MONOLIB_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING \
 	-I..\..\src\stc\scintilla\include -I..\..\src\stc\scintilla\lexlib \
 	-I..\..\src\stc\scintilla\src -D__WX__ -DSCI_LEXER -DNO_CXX11_REGEX \
@@ -652,18 +650,16 @@ MONOLIB_OBJECTS =  \
 	$(OBJS)\monolib_xtixml.o
 BASEDLL_CFLAGS = -I..\..\src\zlib -I..\..\src\regex \
 	-I..\..\src\expat\expat\lib $(__DEBUGINFO) $(__OPTIMIZEFLAG) \
-	$(__THREADSFLAG) $(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ \
-	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
-	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
+	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING -DwxUSE_GUI=0 \
 	-DWXMAKINGDLL_BASE -DwxUSE_BASE=1 $(CPPFLAGS) $(CFLAGS)
 BASEDLL_CXXFLAGS = -I..\..\src\zlib -I..\..\src\regex \
 	-I..\..\src\expat\expat\lib $(__DEBUGINFO) $(__OPTIMIZEFLAG) \
-	$(__THREADSFLAG) $(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ \
-	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
-	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
+	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING -DwxUSE_GUI=0 \
 	-DWXMAKINGDLL_BASE -DwxUSE_BASE=1 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -786,18 +782,16 @@ BASEDLL_OBJECTS =  \
 	$(OBJS)\basedll_volume.o
 BASELIB_CFLAGS = -I..\..\src\zlib -I..\..\src\regex \
 	-I..\..\src\expat\expat\lib $(__DEBUGINFO) $(__OPTIMIZEFLAG) \
-	$(__THREADSFLAG) $(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ \
-	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
-	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
+	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING -DwxUSE_GUI=0 \
 	-DwxUSE_BASE=1 $(CPPFLAGS) $(CFLAGS)
 BASELIB_CXXFLAGS = -I..\..\src\zlib -I..\..\src\regex \
 	-I..\..\src\expat\expat\lib $(__DEBUGINFO) $(__OPTIMIZEFLAG) \
-	$(__THREADSFLAG) $(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ \
-	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
-	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
+	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING -DwxUSE_GUI=0 \
 	-DwxUSE_BASE=1 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy \
 	$(CPPFLAGS) $(CXXFLAGS)
@@ -919,10 +913,9 @@ BASELIB_OBJECTS =  \
 	$(OBJS)\baselib_volume.o
 NETDLL_CXXFLAGS = -I..\..\src\zlib -I..\..\src\regex \
 	-I..\..\src\expat\expat\lib $(__DEBUGINFO) $(__OPTIMIZEFLAG) \
-	$(__THREADSFLAG) $(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ \
-	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
-	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
+	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING -DwxUSE_GUI=0 \
 	-DWXUSINGDLL -DWXMAKINGDLL_NET $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -943,10 +936,9 @@ NETDLL_OBJECTS =  \
 	$(OBJS)\netdll_urlmsw.o
 NETLIB_CXXFLAGS = -I..\..\src\zlib -I..\..\src\regex \
 	-I..\..\src\expat\expat\lib $(__DEBUGINFO) $(__OPTIMIZEFLAG) \
-	$(__THREADSFLAG) $(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ \
-	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
-	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
+	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING -DwxUSE_GUI=0 \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
 	$(CXXFLAGS)
@@ -966,10 +958,10 @@ NETLIB_OBJECTS =  \
 	$(OBJS)\netlib_urlmsw.o
 COREDLL_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING -DWXUSINGDLL \
 	-DWXMAKINGDLL_CORE -DwxUSE_BASE=0 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -985,10 +977,10 @@ COREDLL_OBJECTS =  \
 	$(____CORE_SRC_FILENAMES_2_OBJECTS)
 CORELIB_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING -DwxUSE_BASE=0 \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
 	$(CXXFLAGS)
@@ -1003,10 +995,10 @@ CORELIB_OBJECTS =  \
 	$(____CORE_SRC_FILENAMES_3_OBJECTS)
 ADVDLL_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING -DWXUSINGDLL \
 	-DWXMAKINGDLL_ADV $(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy \
 	$(CPPFLAGS) $(CXXFLAGS)
@@ -1015,20 +1007,20 @@ ADVDLL_OBJECTS =  \
 	$(OBJS)\advdll_version_rc.o
 ADVLIB_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING $(__RTTIFLAG) \
 	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 ADVLIB_OBJECTS =  \
 	$(OBJS)\advlib_dummy.o
 MEDIADLL_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING -DWXUSINGDLL \
 	-DWXMAKINGDLL_MEDIA $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -1041,10 +1033,10 @@ MEDIADLL_OBJECTS =  \
 	$(OBJS)\mediadll_mediactrl_qt.o
 MEDIALIB_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING $(__RTTIFLAG) \
 	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 MEDIALIB_OBJECTS =  \
@@ -1055,10 +1047,10 @@ MEDIALIB_OBJECTS =  \
 	$(OBJS)\medialib_mediactrl_qt.o
 HTMLDLL_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING -DWXUSINGDLL \
 	-DWXMAKINGDLL_HTML $(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy \
 	$(CPPFLAGS) $(CXXFLAGS)
@@ -1094,10 +1086,10 @@ HTMLDLL_OBJECTS =  \
 	$(OBJS)\htmldll_htmllbox.o
 HTMLLIB_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING $(__RTTIFLAG) \
 	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 HTMLLIB_OBJECTS =  \
@@ -1132,10 +1124,9 @@ HTMLLIB_OBJECTS =  \
 WEBVIEWDLL_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg \
 	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex \
 	-I..\..\src\expat\expat\lib $(__DEBUGINFO) $(__OPTIMIZEFLAG) \
-	$(__THREADSFLAG) $(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ \
-	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
-	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
+	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING -DWXUSINGDLL \
 	-DWXMAKINGDLL_WEBVIEW -I..\..\3rdparty\webview2\build\native\include \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
@@ -1151,10 +1142,9 @@ WEBVIEWDLL_OBJECTS =  \
 WEBVIEWLIB_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg \
 	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex \
 	-I..\..\src\expat\expat\lib $(__DEBUGINFO) $(__OPTIMIZEFLAG) \
-	$(__THREADSFLAG) $(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ \
-	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
-	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
+	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING \
 	-I..\..\3rdparty\webview2\build\native\include $(__RTTIFLAG) \
 	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -1167,10 +1157,10 @@ WEBVIEWLIB_OBJECTS =  \
 	$(OBJS)\webviewlib_webviewfshandler.o
 QADLL_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING -DWXUSINGDLL \
 	-DWXMAKINGDLL_QA $(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy \
 	$(CPPFLAGS) $(CXXFLAGS)
@@ -1181,10 +1171,10 @@ QADLL_OBJECTS =  \
 	$(OBJS)\qadll_dbgrptg.o
 QALIB_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING $(__RTTIFLAG) \
 	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 QALIB_OBJECTS =  \
@@ -1193,10 +1183,9 @@ QALIB_OBJECTS =  \
 	$(OBJS)\qalib_dbgrptg.o
 XMLDLL_CXXFLAGS = -I..\..\src\zlib -I..\..\src\regex \
 	-I..\..\src\expat\expat\lib $(__DEBUGINFO) $(__OPTIMIZEFLAG) \
-	$(__THREADSFLAG) $(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ \
-	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
-	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
+	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING -DwxUSE_GUI=0 \
 	-DWXUSINGDLL -DWXMAKINGDLL_XML $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -1207,10 +1196,9 @@ XMLDLL_OBJECTS =  \
 	$(OBJS)\xmldll_xtixml.o
 XMLLIB_CXXFLAGS = -I..\..\src\zlib -I..\..\src\regex \
 	-I..\..\src\expat\expat\lib $(__DEBUGINFO) $(__OPTIMIZEFLAG) \
-	$(__THREADSFLAG) $(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ \
-	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
-	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
+	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING -DwxUSE_GUI=0 \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
 	$(CXXFLAGS)
@@ -1220,10 +1208,10 @@ XMLLIB_OBJECTS =  \
 	$(OBJS)\xmllib_xtixml.o
 XRCDLL_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING -DWXUSINGDLL \
 	-DWXMAKINGDLL_XRC $(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy \
 	$(CPPFLAGS) $(CXXFLAGS)
@@ -1300,10 +1288,10 @@ XRCDLL_OBJECTS =  \
 	$(OBJS)\xrcdll_xmlrsall.o
 XRCLIB_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING $(__RTTIFLAG) \
 	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 XRCLIB_OBJECTS =  \
@@ -1378,10 +1366,10 @@ XRCLIB_OBJECTS =  \
 	$(OBJS)\xrclib_xmlrsall.o
 AUIDLL_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING -DWXUSINGDLL \
 	-DWXMAKINGDLL_AUI $(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy \
 	$(CPPFLAGS) $(CXXFLAGS)
@@ -1401,10 +1389,10 @@ AUIDLL_OBJECTS =  \
 	$(OBJS)\auidll_barartmsw.o
 AUILIB_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING $(__RTTIFLAG) \
 	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 AUILIB_OBJECTS =  \
@@ -1422,10 +1410,10 @@ AUILIB_OBJECTS =  \
 	$(OBJS)\auilib_barartmsw.o
 RIBBONDLL_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING -DWXUSINGDLL \
 	-DWXMAKINGDLL_RIBBON $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -1445,10 +1433,10 @@ RIBBONDLL_OBJECTS =  \
 	$(OBJS)\ribbondll_xh_ribbon.o
 RIBBONLIB_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING $(__RTTIFLAG) \
 	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 RIBBONLIB_OBJECTS =  \
@@ -1467,10 +1455,9 @@ RIBBONLIB_OBJECTS =  \
 PROPGRIDDLL_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg \
 	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex \
 	-I..\..\src\expat\expat\lib $(__DEBUGINFO) $(__OPTIMIZEFLAG) \
-	$(__THREADSFLAG) $(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ \
-	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
-	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
+	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING -DWXUSINGDLL \
 	-DWXMAKINGDLL_PROPGRID $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -1488,10 +1475,9 @@ PROPGRIDDLL_OBJECTS =  \
 PROPGRIDLIB_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg \
 	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex \
 	-I..\..\src\expat\expat\lib $(__DEBUGINFO) $(__OPTIMIZEFLAG) \
-	$(__THREADSFLAG) $(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ \
-	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
-	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
+	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING $(__RTTIFLAG) \
 	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 PROPGRIDLIB_OBJECTS =  \
@@ -1507,10 +1493,9 @@ PROPGRIDLIB_OBJECTS =  \
 RICHTEXTDLL_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg \
 	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex \
 	-I..\..\src\expat\expat\lib $(__DEBUGINFO) $(__OPTIMIZEFLAG) \
-	$(__THREADSFLAG) $(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ \
-	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
-	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
+	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING -DWXUSINGDLL \
 	-DWXMAKINGDLL_RICHTEXT $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -1531,10 +1516,9 @@ RICHTEXTDLL_OBJECTS =  \
 RICHTEXTLIB_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg \
 	-I..\..\src\png -I..\..\src\zlib -I..\..\src\regex \
 	-I..\..\src\expat\expat\lib $(__DEBUGINFO) $(__OPTIMIZEFLAG) \
-	$(__THREADSFLAG) $(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ \
-	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
-	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
+	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING $(__RTTIFLAG) \
 	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 RICHTEXTLIB_OBJECTS =  \
@@ -1552,10 +1536,10 @@ RICHTEXTLIB_OBJECTS =  \
 	$(OBJS)\richtextlib_xh_richtext.o
 STCDLL_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING \
 	-I..\..\src\stc\scintilla\include -I..\..\src\stc\scintilla\lexlib \
 	-I..\..\src\stc\scintilla\src -D__WX__ -DSCI_LEXER -DNO_CXX11_REGEX \
@@ -1569,10 +1553,10 @@ STCDLL_OBJECTS =  \
 	$(OBJS)\stcdll_ScintillaWX.o
 STCLIB_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING \
 	-I..\..\src\stc\scintilla\include -I..\..\src\stc\scintilla\lexlib \
 	-I..\..\src\stc\scintilla\src -D__WX__ -DSCI_LEXER -DNO_CXX11_REGEX \
@@ -1585,10 +1569,10 @@ STCLIB_OBJECTS =  \
 	$(OBJS)\stclib_ScintillaWX.o
 GLDLL_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING -DWXUSINGDLL \
 	-DWXMAKINGDLL_GL $(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy \
 	$(CPPFLAGS) $(CXXFLAGS)
@@ -1599,10 +1583,10 @@ GLDLL_OBJECTS =  \
 	$(OBJS)\gldll_glcanvas.o
 GLLIB_CXXFLAGS = -I..\..\src\tiff\libtiff -I..\..\src\jpeg -I..\..\src\png \
 	-I..\..\src\zlib -I..\..\src\regex -I..\..\src\expat\expat\lib \
-	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
+	$(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXBUILDING $(__RTTIFLAG) \
 	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 GLLIB_OBJECTS =  \
@@ -1613,9 +1597,6 @@ BUILD_CFG_FILE = $(SETUPHDIR)\build.cfg
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
@@ -16350,7 +16331,7 @@ $(OBJS)\webviewdll_webviewfshandler.o: ../../src/common/webviewfshandler.cpp
 	$(CXX) -c -o $@ $(WEBVIEWDLL_CXXFLAGS) $(CPPDEPS) $<
 
 $(OBJS)\webviewdll_version_rc.o: ../../src/msw/version.rc
-	$(WINDRES) -i$< -o$@   --include-dir ../../src/tiff/libtiff --include-dir ../../src/jpeg --include-dir ../../src/png --include-dir ../../src/zlib --include-dir ../../src/regex --include-dir ../../src/expat/expat/lib   --define __WXMSW__ $(__WXUNIV_DEFINE_p_67) $(__DEBUG_DEFINE_p_66) $(__NDEBUG_DEFINE_p_65) $(__EXCEPTIONS_DEFINE_p_65) $(__RTTI_DEFINE_p_65) $(__THREAD_DEFINE_p_65) $(__UNICODE_DEFINE_p_67) --include-dir $(SETUPHDIR) --include-dir ../../include $(__CAIRO_INCLUDEDIR_p) --define WXBUILDING --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_VERSION_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_webview$(WXCOMPILER)$(VENDORTAG) --define WXUSINGDLL --define WXMAKINGDLL_WEBVIEW  --include-dir ../../3rdparty/webview2/build/native/include
+	$(WINDRES) -i$< -o$@   --include-dir ../../src/tiff/libtiff --include-dir ../../src/jpeg --include-dir ../../src/png --include-dir ../../src/zlib --include-dir ../../src/regex --include-dir ../../src/expat/expat/lib   --define __WXMSW__ $(__WXUNIV_DEFINE_p_67) $(__DEBUG_DEFINE_p_66) $(__NDEBUG_DEFINE_p_65) $(__EXCEPTIONS_DEFINE_p_65) $(__RTTI_DEFINE_p_65) $(__THREAD_DEFINE_p_65) $(__UNICODE_DEFINE_p_67) --include-dir $(SETUPHDIR) --include-dir ../../include $(__CAIRO_INCLUDEDIR_p) --define WXBUILDING --define WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_VERSION_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_webview$(WXCOMPILER)$(VENDORTAG) --define WXUSINGDLL --define WXMAKINGDLL_WEBVIEW --include-dir ../../3rdparty/webview2/build/native/include
 
 $(OBJS)\webviewlib_dummy.o: ../../src/common/dummy.cpp
 	$(CXX) -c -o $@ $(WEBVIEWLIB_CXXFLAGS) $(CPPDEPS) $<
diff --git a/build/msw/makefile.vc b/build/msw/makefile.vc
index 2852105611..b0a03f8a5a 100644
--- a/build/msw/makefile.vc
+++ b/build/msw/makefile.vc
@@ -9749,7 +9749,7 @@ $(OBJS)\monodll_rowheightcache.obj: ..\..\src\generic\rowheightcache.cpp
 !endif
 
 $(OBJS)\monodll_version.res: ..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32  /i ..\..\src\tiff\libtiff /i ..\..\src\jpeg /i ..\..\src\png /i ..\..\src\zlib /i ..\..\src\regex /i ..\..\src\expat\expat\lib $(____DEBUGRUNTIME_6) /d _CRT_SECURE_NO_DEPRECATE=1 /d _CRT_NON_CONFORMING_SWPRINTFS=1 /d _SCL_SECURE_NO_WARNINGS=1 $(__NO_VC_CRTDBG_p_72)  $(__TARGET_CPU_COMPFLAG_p_72) /d __WXMSW__ $(__WXUNIV_DEFINE_p_67) $(__DEBUG_DEFINE_p_66) $(__NDEBUG_DEFINE_p_65) $(__EXCEPTIONS_DEFINE_p_65) $(__RTTI_DEFINE_p_65) $(__THREAD_DEFINE_p_65) $(__UNICODE_DEFINE_p_67) /i $(SETUPHDIR) /i ..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_4) /d WXBUILDING /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_VERSION_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)$(WXCOMPILER)$(VENDORTAG) /i ..\..\src\stc\scintilla\include /i ..\..\src\stc\scintilla\lexlib /i ..\..\src\stc\scintilla\src /d __WX__ /d SCI_LEXER /d NO_CXX11_REGEX /d LINK_LEXERS /d wxUSE_BASE=1 /d WXMAKINGDLL  ..\..\src\msw\version.rc
+	rc /fo$@  /d WIN32  /i ..\..\src\tiff\libtiff /i ..\..\src\jpeg /i ..\..\src\png /i ..\..\src\zlib /i ..\..\src\regex /i ..\..\src\expat\expat\lib $(____DEBUGRUNTIME_6) /d _CRT_SECURE_NO_DEPRECATE=1 /d _CRT_NON_CONFORMING_SWPRINTFS=1 /d _SCL_SECURE_NO_WARNINGS=1 $(__NO_VC_CRTDBG_p_72)  $(__TARGET_CPU_COMPFLAG_p_72) /d __WXMSW__ $(__WXUNIV_DEFINE_p_67) $(__DEBUG_DEFINE_p_66) $(__NDEBUG_DEFINE_p_65) $(__EXCEPTIONS_DEFINE_p_65) $(__RTTI_DEFINE_p_65) $(__THREAD_DEFINE_p_65) $(__UNICODE_DEFINE_p_67) /i $(SETUPHDIR) /i ..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_4) /d WXBUILDING /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_VERSION_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)$(WXCOMPILER)$(VENDORTAG) /i ..\..\src\stc\scintilla\include /i ..\..\src\stc\scintilla\lexlib /i ..\..\src\stc\scintilla\src /d __WX__ /d SCI_LEXER /d NO_CXX11_REGEX /d LINK_LEXERS /d wxUSE_BASE=1 /d WXMAKINGDLL ..\..\src\msw\version.rc
 
 $(OBJS)\monolib_dummy.obj: ..\..\src\common\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(MONOLIB_CXXFLAGS) /Ycwx/wxprec.h ..\..\src\common\dummy.cpp
@@ -16781,7 +16781,7 @@ $(OBJS)\webviewdll_webviewfshandler.obj: ..\..\src\common\webviewfshandler.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(WEBVIEWDLL_CXXFLAGS) ..\..\src\common\webviewfshandler.cpp
 
 $(OBJS)\webviewdll_version.res: ..\..\src\msw\version.rc
-	rc /fo$@  /d WIN32  /i ..\..\src\tiff\libtiff /i ..\..\src\jpeg /i ..\..\src\png /i ..\..\src\zlib /i ..\..\src\regex /i ..\..\src\expat\expat\lib $(____DEBUGRUNTIME_6) /d _CRT_SECURE_NO_DEPRECATE=1 /d _CRT_NON_CONFORMING_SWPRINTFS=1 /d _SCL_SECURE_NO_WARNINGS=1 $(__NO_VC_CRTDBG_p_72)  $(__TARGET_CPU_COMPFLAG_p_72) /d __WXMSW__ $(__WXUNIV_DEFINE_p_67) $(__DEBUG_DEFINE_p_66) $(__NDEBUG_DEFINE_p_65) $(__EXCEPTIONS_DEFINE_p_65) $(__RTTI_DEFINE_p_65) $(__THREAD_DEFINE_p_65) $(__UNICODE_DEFINE_p_67) /i $(SETUPHDIR) /i ..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_4) /d WXBUILDING /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_VERSION_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_webview$(WXCOMPILER)$(VENDORTAG) /d WXUSINGDLL /d WXMAKINGDLL_WEBVIEW  /i ..\..\3rdparty\webview2\build\native\include ..\..\src\msw\version.rc
+	rc /fo$@  /d WIN32  /i ..\..\src\tiff\libtiff /i ..\..\src\jpeg /i ..\..\src\png /i ..\..\src\zlib /i ..\..\src\regex /i ..\..\src\expat\expat\lib $(____DEBUGRUNTIME_6) /d _CRT_SECURE_NO_DEPRECATE=1 /d _CRT_NON_CONFORMING_SWPRINTFS=1 /d _SCL_SECURE_NO_WARNINGS=1 $(__NO_VC_CRTDBG_p_72)  $(__TARGET_CPU_COMPFLAG_p_72) /d __WXMSW__ $(__WXUNIV_DEFINE_p_67) $(__DEBUG_DEFINE_p_66) $(__NDEBUG_DEFINE_p_65) $(__EXCEPTIONS_DEFINE_p_65) $(__RTTI_DEFINE_p_65) $(__THREAD_DEFINE_p_65) $(__UNICODE_DEFINE_p_67) /i $(SETUPHDIR) /i ..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_4) /d WXBUILDING /d WXDLLNAME=wx$(PORTNAME)$(WXUNIVNAME)$(WX_VERSION_NODOT)$(WXUNICODEFLAG)$(WXDEBUGFLAG)$(WX_LIB_FLAVOUR)_webview$(WXCOMPILER)$(VENDORTAG) /d WXUSINGDLL /d WXMAKINGDLL_WEBVIEW /i ..\..\3rdparty\webview2\build\native\include ..\..\src\msw\version.rc
 
 $(OBJS)\webviewlib_dummy.obj: ..\..\src\common\dummy.cpp
 	$(CXX) /c /nologo /TP /Fo$@ $(WEBVIEWLIB_CXXFLAGS) /Ycwx/wxprec.h ..\..\src\common\dummy.cpp
diff --git a/configure b/configure
index 8a93a931a5..dce221851c 100755
--- a/configure
+++ b/configure
@@ -1033,6 +1033,7 @@ infodir
 docdir
 oldincludedir
 includedir
+runstatedir
 localstatedir
 sharedstatedir
 sysconfdir
@@ -1466,6 +1467,7 @@ datadir='${datarootdir}'
 sysconfdir='${prefix}/etc'
 sharedstatedir='${prefix}/com'
 localstatedir='${prefix}/var'
+runstatedir='${localstatedir}/run'
 includedir='${prefix}/include'
 oldincludedir='/usr/include'
 docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
@@ -1718,6 +1720,15 @@ do
   | -silent | --silent | --silen | --sile | --sil)
     silent=yes ;;
 
+  -runstatedir | --runstatedir | --runstatedi | --runstated \
+  | --runstate | --runstat | --runsta | --runst | --runs \
+  | --run | --ru | --r)
+    ac_prev=runstatedir ;;
+  -runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
+  | --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
+  | --run=* | --ru=* | --r=*)
+    runstatedir=$ac_optarg ;;
+
   -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
     ac_prev=sbindir ;;
   -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
@@ -1855,7 +1866,7 @@ fi
 for ac_var in	exec_prefix prefix bindir sbindir libexecdir datarootdir \
 		datadir sysconfdir sharedstatedir localstatedir includedir \
 		oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
-		libdir localedir mandir
+		libdir localedir mandir runstatedir
 do
   eval ac_val=\$$ac_var
   # Remove trailing slashes.
@@ -2008,6 +2019,7 @@ Fine tuning of the installation directories:
   --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
   --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
   --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
+  --runstatedir=DIR       modifiable per-process data [LOCALSTATEDIR/run]
   --libdir=DIR            object code libraries [EPREFIX/lib]
   --includedir=DIR        C header files [PREFIX/include]
   --oldincludedir=DIR     C header files for non-gcc [/usr/include]
@@ -22886,19 +22898,6 @@ TOOLKIT_INCLUDE=
 WIDGET_SET=
 
 if test "$USE_WIN32" = 1 ; then
-    for ac_header in w32api.h
-do :
-  ac_fn_c_check_header_compile "$LINENO" "w32api.h" "ac_cv_header_w32api_h" "
-"
-if test "x$ac_cv_header_w32api_h" = xyes; then :
-  cat >>confdefs.h <<_ACEOF
-#define HAVE_W32API_H 1
-_ACEOF
-
-fi
-
-done
-
     ac_fn_c_check_header_compile "$LINENO" "windows.h" "ac_cv_header_windows_h" "
 "
 if test "x$ac_cv_header_windows_h" = xyes; then :
@@ -27601,7 +27600,7 @@ $as_echo "found in $ac_find_includes" >&6; }
     fi
   fi
 
-            CPPFLAGS="$ac_path_to_include $CPPFLAGS"
+            CPPFLAGS="$CPPFLAGS $ac_path_to_include"
         else
             { $as_echo "$as_me:${as_lineno-$LINENO}: result: not found" >&5
 $as_echo "not found" >&6; }
@@ -29229,7 +29228,7 @@ $as_echo "$wx_cv_cc_visibility_workaround" >&6; }
 
       *-*-solaris2* )
 
-                        CPPFLAGS="-isystem /usr/openwin/include $CPPFLAGS"
+                        CPPFLAGS="$CPPFLAGS -isystem /usr/openwin/include"
 
                         saveLdflags="$LDFLAGS"
         LDFLAGS="$saveLdflags -Wl,-rpath,/"
@@ -38264,10 +38263,12 @@ WXCONFIG_CFLAGS=`echo $WXCONFIG_CFLAGS`
 WXCONFIG_CXXFLAGS=`echo $WXCONFIG_CFLAGS $WXCONFIG_CXXFLAGS`
 
 
-CPPFLAGS=`echo $WXCONFIG_CPPFLAGS \
+CPPFLAGS=`echo \
  -I\\${wx_top_builddir}/lib/wx/include/${TOOLCHAIN_FULLNAME} \
- -I\\${top_srcdir}/include $TOOLKIT_INCLUDE \
- $CPPFLAGS `
+ -I\\${top_srcdir}/include \
+ $CPPFLAGS \
+ $WXCONFIG_CPPFLAGS \
+ $TOOLKIT_INCLUDE`
 
 C_AND_CXX_FLAGS="$DEBUG_CFLAGS $PROFILE_FLAGS $OPTIMISE_CFLAGS"
 CFLAGS=`echo $WXCONFIG_CFLAGS $CWARNINGS $C_AND_CXX_FLAGS $CFLAGS `
diff --git a/configure.in b/configure.in
index ca43a6f487..e859f6f8ef 100644
--- a/configure.in
+++ b/configure.in
@@ -2956,7 +2956,6 @@ WIDGET_SET=
 dnl are we building for a win32 target environment?
 dnl If so, setup common stuff needed for both GUI and Base libs.
 if test "$USE_WIN32" = 1 ; then
-    AC_CHECK_HEADERS(w32api.h,,, [ ])
     AC_CHECK_HEADER(windows.h,,
     [
         AC_MSG_ERROR(please set CFLAGS to contain the location of windows.h)
diff --git a/demos/bombs/makefile.gcc b/demos/bombs/makefile.gcc
index fc7f27398c..fb3916605c 100644
--- a/demos/bombs/makefile.gcc
+++ b/demos/bombs/makefile.gcc
@@ -22,12 +22,12 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 BOMBS_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 BOMBS_OBJECTS =  \
 	$(OBJS)\bombs_bombs.o \
 	$(OBJS)\bombs_bombs1.o \
@@ -36,9 +36,6 @@ BOMBS_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/demos/forty/makefile.gcc b/demos/forty/makefile.gcc
index 424b06df6d..f8ca3b633c 100644
--- a/demos/forty/makefile.gcc
+++ b/demos/forty/makefile.gcc
@@ -22,12 +22,12 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 FORTY_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 FORTY_OBJECTS =  \
 	$(OBJS)\forty_forty.o \
 	$(OBJS)\forty_canvas.o \
@@ -41,9 +41,6 @@ FORTY_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/demos/fractal/makefile.gcc b/demos/fractal/makefile.gcc
index 08d704f9cd..cef5a7a136 100644
--- a/demos/fractal/makefile.gcc
+++ b/demos/fractal/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 FRACTAL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 FRACTAL_OBJECTS =  \
 	$(OBJS)\fractal_fractal.o \
 	$(OBJS)\fractal_fractal_rc.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/demos/life/makefile.gcc b/demos/life/makefile.gcc
index e23808aab1..b4f55f3a84 100644
--- a/demos/life/makefile.gcc
+++ b/demos/life/makefile.gcc
@@ -21,10 +21,10 @@ LIBDIRNAME = \
 	.\..\..\lib\$(COMPILER_PREFIX)$(COMPILER_VERSION)_$(LIBTYPE_SUFFIX)$(CFG)
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
-LIFE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+LIFE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
 	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -37,9 +37,6 @@ LIFE_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/demos/makefile.gcc b/demos/makefile.gcc
index 296cba4db4..423baf3b2f 100644
--- a/demos/makefile.gcc
+++ b/demos/makefile.gcc
@@ -29,8 +29,7 @@ MAKEARGS = LINK_DLL_FLAGS="$(LINK_DLL_FLAGS)" \
 	USE_THREADS="$(USE_THREADS)" USE_CAIRO="$(USE_CAIRO)" \
 	OFFICIAL_BUILD="$(OFFICIAL_BUILD)" VENDOR="$(VENDOR)" \
 	WX_FLAVOUR="$(WX_FLAVOUR)" WX_LIB_FLAVOUR="$(WX_LIB_FLAVOUR)" CFG="$(CFG)" \
-	RUNTIME_LIBS="$(RUNTIME_LIBS)" GCC_VERSION="$(GCC_VERSION)" \
-	WINDRES="$(WINDRES)"
+	RUNTIME_LIBS="$(RUNTIME_LIBS)" WINDRES="$(WINDRES)"
 
 ### Conditionally set variables: ###
 
diff --git a/demos/poem/makefile.gcc b/demos/poem/makefile.gcc
index b3cfed73b3..0cc9aefb72 100644
--- a/demos/poem/makefile.gcc
+++ b/demos/poem/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 WXPOEM_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 WXPOEM_OBJECTS =  \
 	$(OBJS)\wxpoem_wxpoem.o \
 	$(OBJS)\wxpoem_wxpoem_rc.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/include/wx/msw/gccpriv.h b/include/wx/msw/gccpriv.h
index b90ee223d8..26f68d18c7 100644
--- a/include/wx/msw/gccpriv.h
+++ b/include/wx/msw/gccpriv.h
@@ -72,18 +72,8 @@
     #define wxCHECK_MINGW32_VERSION( major, minor ) (0)
 #endif
 
-#if defined( __MINGW32__ ) && !defined(__WINE__) && !defined( HAVE_W32API_H )
-    #if __MINGW32_MAJOR_VERSION >= 1
-        #define HAVE_W32API_H
-    #endif
-#elif defined( __CYGWIN__ ) && !defined( HAVE_W32API_H )
-    #define HAVE_W32API_H
-#endif
-
 /* check for MinGW/Cygwin w32api version ( releases >= 0.5, only ) */
-#if defined( HAVE_W32API_H )
 #include <w32api.h>
-#endif
 
 #if defined(__W32API_MAJOR_VERSION) && defined(__W32API_MINOR_VERSION)
     #define wxCHECK_W32API_VERSION( major, minor ) \
diff --git a/samples/access/makefile.gcc b/samples/access/makefile.gcc
index d550ae11fb..6948b0e3aa 100644
--- a/samples/access/makefile.gcc
+++ b/samples/access/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 ACCESSTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 ACCESSTEST_OBJECTS =  \
 	$(OBJS)\accesstest_sample_rc.o \
 	$(OBJS)\accesstest_accesstest.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/animate/makefile.gcc b/samples/animate/makefile.gcc
index 13d4fd0d3a..9b573af2c3 100644
--- a/samples/animate/makefile.gcc
+++ b/samples/animate/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 ANITEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 ANITEST_OBJECTS =  \
 	$(OBJS)\anitest_anitest.o \
 	$(OBJS)\anitest_sample_rc.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/archive/makefile.gcc b/samples/archive/makefile.gcc
index 89cde2c871..90b84cd854 100644
--- a/samples/archive/makefile.gcc
+++ b/samples/archive/makefile.gcc
@@ -22,20 +22,17 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 ARCHIVE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 \
+	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
+	$(CXXFLAGS)
 ARCHIVE_OBJECTS =  \
 	$(OBJS)\archive_archive.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/artprov/makefile.gcc b/samples/artprov/makefile.gcc
index 5315b98c05..8b1f028aba 100644
--- a/samples/artprov/makefile.gcc
+++ b/samples/artprov/makefile.gcc
@@ -22,12 +22,12 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 ARTTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 ARTTEST_OBJECTS =  \
 	$(OBJS)\arttest_sample_rc.o \
 	$(OBJS)\arttest_arttest.o \
@@ -35,9 +35,6 @@ ARTTEST_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/aui/makefile.gcc b/samples/aui/makefile.gcc
index 60e6ace138..1d4775b01e 100644
--- a/samples/aui/makefile.gcc
+++ b/samples/aui/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 AUIDEMO_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 AUIDEMO_OBJECTS =  \
 	$(OBJS)\auidemo_sample_rc.o \
 	$(OBJS)\auidemo_auidemo.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/calendar/makefile.gcc b/samples/calendar/makefile.gcc
index d5f3c4202c..2c88685a7e 100644
--- a/samples/calendar/makefile.gcc
+++ b/samples/calendar/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 CALENDAR_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 CALENDAR_OBJECTS =  \
 	$(OBJS)\calendar_sample_rc.o \
 	$(OBJS)\calendar_calendar.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/caret/makefile.gcc b/samples/caret/makefile.gcc
index f3588580fc..20380c8ea9 100644
--- a/samples/caret/makefile.gcc
+++ b/samples/caret/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 CARET_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 CARET_OBJECTS =  \
 	$(OBJS)\caret_sample_rc.o \
 	$(OBJS)\caret_caret.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/clipboard/makefile.gcc b/samples/clipboard/makefile.gcc
index c5c067e4ee..23eb75dbf4 100644
--- a/samples/clipboard/makefile.gcc
+++ b/samples/clipboard/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 CLIPBOARD_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 CLIPBOARD_OBJECTS =  \
 	$(OBJS)\clipboard_sample_rc.o \
 	$(OBJS)\clipboard_clipboard.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/collpane/makefile.gcc b/samples/collpane/makefile.gcc
index 3f5bf9357f..d28f8d8bc7 100644
--- a/samples/collpane/makefile.gcc
+++ b/samples/collpane/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 COLLPANE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 COLLPANE_OBJECTS =  \
 	$(OBJS)\collpane_collpane.o \
 	$(OBJS)\collpane_sample_rc.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/combo/makefile.gcc b/samples/combo/makefile.gcc
index 70eeccbca6..823988c535 100644
--- a/samples/combo/makefile.gcc
+++ b/samples/combo/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 COMBO_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 COMBO_OBJECTS =  \
 	$(OBJS)\combo_sample_rc.o \
 	$(OBJS)\combo_combo.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/config/makefile.gcc b/samples/config/makefile.gcc
index 1e7db34aeb..b39b290fa6 100644
--- a/samples/config/makefile.gcc
+++ b/samples/config/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 CONFTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 CONFTEST_OBJECTS =  \
 	$(OBJS)\conftest_sample_rc.o \
 	$(OBJS)\conftest_conftest.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/console/makefile.gcc b/samples/console/makefile.gcc
index a601bebc1b..df8ad07c06 100644
--- a/samples/console/makefile.gcc
+++ b/samples/console/makefile.gcc
@@ -22,20 +22,17 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 CONSOLE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 \
+	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
+	$(CXXFLAGS)
 CONSOLE_OBJECTS =  \
 	$(OBJS)\console_console.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/dataview/makefile.gcc b/samples/dataview/makefile.gcc
index e647936001..17673627ca 100644
--- a/samples/dataview/makefile.gcc
+++ b/samples/dataview/makefile.gcc
@@ -22,12 +22,12 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 DATAVIEW_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 DATAVIEW_OBJECTS =  \
 	$(OBJS)\dataview_dataview.o \
 	$(OBJS)\dataview_mymodels.o \
@@ -35,9 +35,6 @@ DATAVIEW_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/debugrpt/makefile.gcc b/samples/debugrpt/makefile.gcc
index d9b8edac08..6af0144917 100644
--- a/samples/debugrpt/makefile.gcc
+++ b/samples/debugrpt/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 DEBUGRPT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 DEBUGRPT_OBJECTS =  \
 	$(OBJS)\debugrpt_sample_rc.o \
 	$(OBJS)\debugrpt_debugrpt.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/dialogs/makefile.gcc b/samples/dialogs/makefile.gcc
index 8e6b1d556b..753589a3b9 100644
--- a/samples/dialogs/makefile.gcc
+++ b/samples/dialogs/makefile.gcc
@@ -22,12 +22,12 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 DIALOGS_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 DIALOGS_OBJECTS =  \
 	$(OBJS)\dialogs_sample_rc.o \
 	$(OBJS)\dialogs_dialogs.o \
@@ -35,9 +35,6 @@ DIALOGS_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/dialup/makefile.gcc b/samples/dialup/makefile.gcc
index 00f66ccec8..50dde2a84c 100644
--- a/samples/dialup/makefile.gcc
+++ b/samples/dialup/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 NETTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 NETTEST_OBJECTS =  \
 	$(OBJS)\nettest_sample_rc.o \
 	$(OBJS)\nettest_nettest.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/display/makefile.gcc b/samples/display/makefile.gcc
index 81ee37057f..4f7cf02e1c 100644
--- a/samples/display/makefile.gcc
+++ b/samples/display/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 DISPLAY_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 DISPLAY_OBJECTS =  \
 	$(OBJS)\display_sample_rc.o \
 	$(OBJS)\display_display.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/dll/makefile.gcc b/samples/dll/makefile.gcc
index 33fc04a699..37440f9d9b 100644
--- a/samples/dll/makefile.gcc
+++ b/samples/dll/makefile.gcc
@@ -21,19 +21,19 @@ LIBDIRNAME = \
 	.\..\..\lib\$(COMPILER_PREFIX)$(COMPILER_VERSION)_$(LIBTYPE_SUFFIX)$(CFG)
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
-MY_DLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+MY_DLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall $(__DLLFLAG_p) -DMY_DLL_BUILDING \
 	-I. $(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
 	$(CXXFLAGS)
 MY_DLL_OBJECTS =  \
 	$(OBJS)\my_dll_my_dll.o
-WX_EXE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+WX_EXE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -I. $(__DLLFLAG_p) \
 	-I.\..\..\samples -DNOPCH $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -41,16 +41,12 @@ WX_EXE_OBJECTS =  \
 	$(OBJS)\wx_exe_sample_rc.o \
 	$(OBJS)\wx_exe_wx_exe.o
 SDK_EXE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H $(__RTTIFLAG) $(__EXCEPTIONSFLAG) $(CPPFLAGS) \
-	$(CXXFLAGS)
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) $(CPPFLAGS) $(CXXFLAGS)
 SDK_EXE_OBJECTS =  \
 	$(OBJS)\sdk_exe_sdk_exe.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/dnd/makefile.gcc b/samples/dnd/makefile.gcc
index b8a8131dfb..ac434b97dd 100644
--- a/samples/dnd/makefile.gcc
+++ b/samples/dnd/makefile.gcc
@@ -21,10 +21,10 @@ LIBDIRNAME = \
 	.\..\..\lib\$(COMPILER_PREFIX)$(COMPILER_VERSION)_$(LIBTYPE_SUFFIX)$(CFG)
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
-DND_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+DND_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
 	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -34,9 +34,6 @@ DND_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/docview/makefile.gcc b/samples/docview/makefile.gcc
index 928abcf348..2fe9d83b8b 100644
--- a/samples/docview/makefile.gcc
+++ b/samples/docview/makefile.gcc
@@ -22,12 +22,12 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 DOCVIEW_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 DOCVIEW_OBJECTS =  \
 	$(OBJS)\docview_docview.o \
 	$(OBJS)\docview_doc.o \
@@ -36,9 +36,6 @@ DOCVIEW_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/dragimag/makefile.gcc b/samples/dragimag/makefile.gcc
index 6436e01e4a..3ec61b13a5 100644
--- a/samples/dragimag/makefile.gcc
+++ b/samples/dragimag/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 DRAGIMAG_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 DRAGIMAG_OBJECTS =  \
 	$(OBJS)\dragimag_dragimag.o \
 	$(OBJS)\dragimag_dragimag_rc.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/drawing/makefile.gcc b/samples/drawing/makefile.gcc
index 6dc51ed64a..4ef5a2b4e4 100644
--- a/samples/drawing/makefile.gcc
+++ b/samples/drawing/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 DRAWING_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 DRAWING_OBJECTS =  \
 	$(OBJS)\drawing_sample_rc.o \
 	$(OBJS)\drawing_drawing.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/erase/makefile.gcc b/samples/erase/makefile.gcc
index e91b717274..d1217ec06c 100644
--- a/samples/erase/makefile.gcc
+++ b/samples/erase/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 ERASE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 ERASE_OBJECTS =  \
 	$(OBJS)\erase_sample_rc.o \
 	$(OBJS)\erase_erase.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/event/makefile.gcc b/samples/event/makefile.gcc
index b2b74cb34d..3119e93bf6 100644
--- a/samples/event/makefile.gcc
+++ b/samples/event/makefile.gcc
@@ -22,12 +22,12 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 EVENT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 EVENT_OBJECTS =  \
 	$(OBJS)\event_sample_rc.o \
 	$(OBJS)\event_event.o \
@@ -36,9 +36,6 @@ EVENT_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/except/makefile.gcc b/samples/except/makefile.gcc
index e5b2c2bfb8..4a7c8f49c5 100644
--- a/samples/except/makefile.gcc
+++ b/samples/except/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 EXCEPT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 EXCEPT_OBJECTS =  \
 	$(OBJS)\except_sample_rc.o \
 	$(OBJS)\except_except.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/exec/makefile.gcc b/samples/exec/makefile.gcc
index e4eb4281a1..55028681dc 100644
--- a/samples/exec/makefile.gcc
+++ b/samples/exec/makefile.gcc
@@ -21,10 +21,10 @@ LIBDIRNAME = \
 	.\..\..\lib\$(COMPILER_PREFIX)$(COMPILER_VERSION)_$(LIBTYPE_SUFFIX)$(CFG)
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
-EXEC_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+EXEC_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
 	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -34,9 +34,6 @@ EXEC_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/font/makefile.gcc b/samples/font/makefile.gcc
index 8828b7c3e3..889a5ac68d 100644
--- a/samples/font/makefile.gcc
+++ b/samples/font/makefile.gcc
@@ -21,10 +21,10 @@ LIBDIRNAME = \
 	.\..\..\lib\$(COMPILER_PREFIX)$(COMPILER_VERSION)_$(LIBTYPE_SUFFIX)$(CFG)
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
-FONT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+FONT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
 	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -34,9 +34,6 @@ FONT_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/fswatcher/makefile.gcc b/samples/fswatcher/makefile.gcc
index 7f83e5a227..ea084c7a65 100644
--- a/samples/fswatcher/makefile.gcc
+++ b/samples/fswatcher/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 FSWATCHER_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 FSWATCHER_OBJECTS =  \
 	$(OBJS)\fswatcher_sample_rc.o \
 	$(OBJS)\fswatcher_fswatcher.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/grid/makefile.gcc b/samples/grid/makefile.gcc
index b2594faba7..73e7742265 100644
--- a/samples/grid/makefile.gcc
+++ b/samples/grid/makefile.gcc
@@ -21,10 +21,10 @@ LIBDIRNAME = \
 	.\..\..\lib\$(COMPILER_PREFIX)$(COMPILER_VERSION)_$(LIBTYPE_SUFFIX)$(CFG)
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
-GRID_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+GRID_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
 	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -34,9 +34,6 @@ GRID_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/help/makefile.gcc b/samples/help/makefile.gcc
index 4403f72022..0cfea2102f 100644
--- a/samples/help/makefile.gcc
+++ b/samples/help/makefile.gcc
@@ -21,10 +21,10 @@ LIBDIRNAME = \
 	.\..\..\lib\$(COMPILER_PREFIX)$(COMPILER_VERSION)_$(LIBTYPE_SUFFIX)$(CFG)
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
-HELP_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+HELP_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
 	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -34,9 +34,6 @@ HELP_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/htlbox/makefile.gcc b/samples/htlbox/makefile.gcc
index 631d9e8d77..55abf3b645 100644
--- a/samples/htlbox/makefile.gcc
+++ b/samples/htlbox/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 HTLBOX_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 HTLBOX_OBJECTS =  \
 	$(OBJS)\htlbox_sample_rc.o \
 	$(OBJS)\htlbox_htlbox.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/html/about/makefile.gcc b/samples/html/about/makefile.gcc
index 7f1c72f017..7fc62d9eed 100644
--- a/samples/html/about/makefile.gcc
+++ b/samples/html/about/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 ABOUT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 ABOUT_OBJECTS =  \
 	$(OBJS)\about_sample_rc.o \
 	$(OBJS)\about_about.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/html/help/makefile.gcc b/samples/html/help/makefile.gcc
index c3c13e5bb1..76f9b93a34 100644
--- a/samples/html/help/makefile.gcc
+++ b/samples/html/help/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 HTMLHELP_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 HTMLHELP_OBJECTS =  \
 	$(OBJS)\htmlhelp_sample_rc.o \
 	$(OBJS)\htmlhelp_help.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/html/helpview/makefile.gcc b/samples/html/helpview/makefile.gcc
index d40e98e93d..f8d6bde8b8 100644
--- a/samples/html/helpview/makefile.gcc
+++ b/samples/html/helpview/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 HELPVIEW_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 HELPVIEW_OBJECTS =  \
 	$(OBJS)\helpview_sample_rc.o \
 	$(OBJS)\helpview_helpview.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/html/makefile.gcc b/samples/html/makefile.gcc
index 259e0e88f7..e5335e61c8 100644
--- a/samples/html/makefile.gcc
+++ b/samples/html/makefile.gcc
@@ -29,8 +29,7 @@ MAKEARGS = LINK_DLL_FLAGS="$(LINK_DLL_FLAGS)" \
 	USE_THREADS="$(USE_THREADS)" USE_CAIRO="$(USE_CAIRO)" \
 	OFFICIAL_BUILD="$(OFFICIAL_BUILD)" VENDOR="$(VENDOR)" \
 	WX_FLAVOUR="$(WX_FLAVOUR)" WX_LIB_FLAVOUR="$(WX_LIB_FLAVOUR)" CFG="$(CFG)" \
-	RUNTIME_LIBS="$(RUNTIME_LIBS)" GCC_VERSION="$(GCC_VERSION)" \
-	WINDRES="$(WINDRES)"
+	RUNTIME_LIBS="$(RUNTIME_LIBS)" WINDRES="$(WINDRES)"
 
 ### Conditionally set variables: ###
 
diff --git a/samples/html/printing/makefile.gcc b/samples/html/printing/makefile.gcc
index 1adcef77c1..56d2809791 100644
--- a/samples/html/printing/makefile.gcc
+++ b/samples/html/printing/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 HTMLPRINTING_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 HTMLPRINTING_OBJECTS =  \
 	$(OBJS)\htmlprinting_sample_rc.o \
 	$(OBJS)\htmlprinting_printing.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/html/test/makefile.gcc b/samples/html/test/makefile.gcc
index 9a5429b7f3..f383a4099b 100644
--- a/samples/html/test/makefile.gcc
+++ b/samples/html/test/makefile.gcc
@@ -21,22 +21,19 @@ LIBDIRNAME = \
 	.\..\..\..\lib\$(COMPILER_PREFIX)$(COMPILER_VERSION)_$(LIBTYPE_SUFFIX)$(CFG)
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
-TEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) \
-	-I.\..\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+TEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 TEST_OBJECTS =  \
 	$(OBJS)\test_sample_rc.o \
 	$(OBJS)\test_test.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/html/virtual/makefile.gcc b/samples/html/virtual/makefile.gcc
index f8acd1ec36..bef9847afd 100644
--- a/samples/html/virtual/makefile.gcc
+++ b/samples/html/virtual/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 VIRTUAL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 VIRTUAL_OBJECTS =  \
 	$(OBJS)\virtual_sample_rc.o \
 	$(OBJS)\virtual_virtual.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/html/widget/makefile.gcc b/samples/html/widget/makefile.gcc
index 4ce99e2444..04e5fcffb2 100644
--- a/samples/html/widget/makefile.gcc
+++ b/samples/html/widget/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 WIDGET_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 WIDGET_OBJECTS =  \
 	$(OBJS)\widget_sample_rc.o \
 	$(OBJS)\widget_widget.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/html/zip/makefile.gcc b/samples/html/zip/makefile.gcc
index 3fcc6d8d96..25c39d1b1b 100644
--- a/samples/html/zip/makefile.gcc
+++ b/samples/html/zip/makefile.gcc
@@ -21,22 +21,19 @@ LIBDIRNAME = \
 	.\..\..\..\lib\$(COMPILER_PREFIX)$(COMPILER_VERSION)_$(LIBTYPE_SUFFIX)$(CFG)
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
-ZIP_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) \
-	-I.\..\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+ZIP_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 ZIP_OBJECTS =  \
 	$(OBJS)\zip_sample_rc.o \
 	$(OBJS)\zip_zip.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/image/makefile.gcc b/samples/image/makefile.gcc
index ec361f2f56..b3006907b6 100644
--- a/samples/image/makefile.gcc
+++ b/samples/image/makefile.gcc
@@ -22,12 +22,12 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 IMAGE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 IMAGE_OBJECTS =  \
 	$(OBJS)\image_image.o \
 	$(OBJS)\image_canvas.o \
@@ -35,9 +35,6 @@ IMAGE_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/internat/makefile.gcc b/samples/internat/makefile.gcc
index af2a0497e7..2b8a0ad1ab 100644
--- a/samples/internat/makefile.gcc
+++ b/samples/internat/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 INTERNAT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 INTERNAT_OBJECTS =  \
 	$(OBJS)\internat_sample_rc.o \
 	$(OBJS)\internat_internat.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/ipc/makefile.gcc b/samples/ipc/makefile.gcc
index 5b39a63b1a..9660587abf 100644
--- a/samples/ipc/makefile.gcc
+++ b/samples/ipc/makefile.gcc
@@ -22,49 +22,46 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 IPCCLIENT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG) \
-	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 IPCCLIENT_OBJECTS =  \
 	$(OBJS)\ipcclient_sample_rc.o \
 	$(OBJS)\ipcclient_client.o
 IPCSERVER_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG) \
-	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 IPCSERVER_OBJECTS =  \
 	$(OBJS)\ipcserver_sample_rc.o \
 	$(OBJS)\ipcserver_server.o
 BASEIPCCLIENT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall \
-	-I. $(__DLLFLAG_p) -DwxUSE_GUI=0 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
+	$(CXXFLAGS)
 BASEIPCCLIENT_OBJECTS =  \
 	$(OBJS)\baseipcclient_baseclient.o
 BASEIPCSERVER_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall \
-	-I. $(__DLLFLAG_p) -DwxUSE_GUI=0 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
+	$(CXXFLAGS)
 BASEIPCSERVER_OBJECTS =  \
 	$(OBJS)\baseipcserver_baseserver.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/joytest/makefile.gcc b/samples/joytest/makefile.gcc
index cfd449c44f..4b61eba69d 100644
--- a/samples/joytest/makefile.gcc
+++ b/samples/joytest/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 JOYTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 JOYTEST_OBJECTS =  \
 	$(OBJS)\joytest_sample_rc.o \
 	$(OBJS)\joytest_joytest.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/keyboard/makefile.gcc b/samples/keyboard/makefile.gcc
index f8f0425c6c..7ea98f766a 100644
--- a/samples/keyboard/makefile.gcc
+++ b/samples/keyboard/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 KEYBOARD_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 KEYBOARD_OBJECTS =  \
 	$(OBJS)\keyboard_sample_rc.o \
 	$(OBJS)\keyboard_keyboard.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/layout/makefile.gcc b/samples/layout/makefile.gcc
index 6770ba1cbb..7592372df8 100644
--- a/samples/layout/makefile.gcc
+++ b/samples/layout/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 LAYOUT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 LAYOUT_OBJECTS =  \
 	$(OBJS)\layout_sample_rc.o \
 	$(OBJS)\layout_layout.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/listctrl/makefile.gcc b/samples/listctrl/makefile.gcc
index abf7b82f5b..00a027e461 100644
--- a/samples/listctrl/makefile.gcc
+++ b/samples/listctrl/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 LISTCTRL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 LISTCTRL_OBJECTS =  \
 	$(OBJS)\listctrl_listtest.o \
 	$(OBJS)\listctrl_listtest_rc.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/makefile.gcc b/samples/makefile.gcc
index a60ab9cab7..7057e0ce1f 100644
--- a/samples/makefile.gcc
+++ b/samples/makefile.gcc
@@ -29,8 +29,7 @@ MAKEARGS = LINK_DLL_FLAGS="$(LINK_DLL_FLAGS)" \
 	USE_THREADS="$(USE_THREADS)" USE_CAIRO="$(USE_CAIRO)" \
 	OFFICIAL_BUILD="$(OFFICIAL_BUILD)" VENDOR="$(VENDOR)" \
 	WX_FLAVOUR="$(WX_FLAVOUR)" WX_LIB_FLAVOUR="$(WX_LIB_FLAVOUR)" CFG="$(CFG)" \
-	RUNTIME_LIBS="$(RUNTIME_LIBS)" GCC_VERSION="$(GCC_VERSION)" \
-	WINDRES="$(WINDRES)"
+	RUNTIME_LIBS="$(RUNTIME_LIBS)" WINDRES="$(WINDRES)"
 
 ### Conditionally set variables: ###
 
diff --git a/samples/mdi/makefile.gcc b/samples/mdi/makefile.gcc
index 38a13bea93..84543a302f 100644
--- a/samples/mdi/makefile.gcc
+++ b/samples/mdi/makefile.gcc
@@ -21,10 +21,10 @@ LIBDIRNAME = \
 	.\..\..\lib\$(COMPILER_PREFIX)$(COMPILER_VERSION)_$(LIBTYPE_SUFFIX)$(CFG)
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
-MDI_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+MDI_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
 	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -34,9 +34,6 @@ MDI_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/mediaplayer/makefile.gcc b/samples/mediaplayer/makefile.gcc
index be9effbb40..405bb87f21 100644
--- a/samples/mediaplayer/makefile.gcc
+++ b/samples/mediaplayer/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 MEDIAPLAYER_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 MEDIAPLAYER_OBJECTS =  \
 	$(OBJS)\mediaplayer_sample_rc.o \
 	$(OBJS)\mediaplayer_mediaplayer.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/memcheck/makefile.gcc b/samples/memcheck/makefile.gcc
index e24064b42f..e93984bac9 100644
--- a/samples/memcheck/makefile.gcc
+++ b/samples/memcheck/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 MEMCHECK_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 MEMCHECK_OBJECTS =  \
 	$(OBJS)\memcheck_sample_rc.o \
 	$(OBJS)\memcheck_memcheck.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/menu/makefile.gcc b/samples/menu/makefile.gcc
index 851902e6b2..f5a3419056 100644
--- a/samples/menu/makefile.gcc
+++ b/samples/menu/makefile.gcc
@@ -21,10 +21,10 @@ LIBDIRNAME = \
 	.\..\..\lib\$(COMPILER_PREFIX)$(COMPILER_VERSION)_$(LIBTYPE_SUFFIX)$(CFG)
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
-MENU_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+MENU_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
 	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -34,9 +34,6 @@ MENU_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/minimal/makefile.gcc b/samples/minimal/makefile.gcc
index e7a3607edd..e85224363d 100644
--- a/samples/minimal/makefile.gcc
+++ b/samples/minimal/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 MINIMAL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 MINIMAL_OBJECTS =  \
 	$(OBJS)\minimal_sample_rc.o \
 	$(OBJS)\minimal_minimal.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/nativdlg/makefile.gcc b/samples/nativdlg/makefile.gcc
index cb9b374350..5921d515c6 100644
--- a/samples/nativdlg/makefile.gcc
+++ b/samples/nativdlg/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 NATIVDLG_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 NATIVDLG_OBJECTS =  \
 	$(OBJS)\nativdlg_nativdlg.o \
 	$(OBJS)\nativdlg_nativdlg_rc.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/notebook/makefile.gcc b/samples/notebook/makefile.gcc
index e02b856586..a2ee38d9cd 100644
--- a/samples/notebook/makefile.gcc
+++ b/samples/notebook/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 NOTEBOOK_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 NOTEBOOK_OBJECTS =  \
 	$(OBJS)\notebook_sample_rc.o \
 	$(OBJS)\notebook_notebook.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/oleauto/makefile.gcc b/samples/oleauto/makefile.gcc
index 5c8de54316..9da7393a09 100644
--- a/samples/oleauto/makefile.gcc
+++ b/samples/oleauto/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 OLEAUTO_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 OLEAUTO_OBJECTS =  \
 	$(OBJS)\oleauto_sample_rc.o \
 	$(OBJS)\oleauto_oleauto.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/opengl/cube/makefile.gcc b/samples/opengl/cube/makefile.gcc
index 8aa300d51b..f2e25d8980 100644
--- a/samples/opengl/cube/makefile.gcc
+++ b/samples/opengl/cube/makefile.gcc
@@ -21,22 +21,19 @@ LIBDIRNAME = \
 	.\..\..\..\lib\$(COMPILER_PREFIX)$(COMPILER_VERSION)_$(LIBTYPE_SUFFIX)$(CFG)
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
-CUBE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) \
-	-I.\..\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+CUBE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 CUBE_OBJECTS =  \
 	$(OBJS)\cube_sample_rc.o \
 	$(OBJS)\cube_cube.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/opengl/isosurf/makefile.gcc b/samples/opengl/isosurf/makefile.gcc
index 999129b1df..d555efdc5d 100644
--- a/samples/opengl/isosurf/makefile.gcc
+++ b/samples/opengl/isosurf/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 ISOSURF_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 ISOSURF_OBJECTS =  \
 	$(OBJS)\isosurf_sample_rc.o \
 	$(OBJS)\isosurf_isosurf.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/opengl/makefile.gcc b/samples/opengl/makefile.gcc
index 2049481cb1..4b745581d6 100644
--- a/samples/opengl/makefile.gcc
+++ b/samples/opengl/makefile.gcc
@@ -29,8 +29,7 @@ MAKEARGS = LINK_DLL_FLAGS="$(LINK_DLL_FLAGS)" \
 	USE_THREADS="$(USE_THREADS)" USE_CAIRO="$(USE_CAIRO)" \
 	OFFICIAL_BUILD="$(OFFICIAL_BUILD)" VENDOR="$(VENDOR)" \
 	WX_FLAVOUR="$(WX_FLAVOUR)" WX_LIB_FLAVOUR="$(WX_LIB_FLAVOUR)" CFG="$(CFG)" \
-	RUNTIME_LIBS="$(RUNTIME_LIBS)" GCC_VERSION="$(GCC_VERSION)" \
-	WINDRES="$(WINDRES)"
+	RUNTIME_LIBS="$(RUNTIME_LIBS)" WINDRES="$(WINDRES)"
 
 ### Conditionally set variables: ###
 
diff --git a/samples/opengl/penguin/makefile.gcc b/samples/opengl/penguin/makefile.gcc
index a7185b8e58..fe8154bf14 100644
--- a/samples/opengl/penguin/makefile.gcc
+++ b/samples/opengl/penguin/makefile.gcc
@@ -22,18 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 PENGUIN_CFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(CPPFLAGS) $(CFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(CPPFLAGS) $(CFLAGS)
 PENGUIN_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 PENGUIN_OBJECTS =  \
 	$(OBJS)\penguin_sample_rc.o \
 	$(OBJS)\penguin_penguin.o \
@@ -42,9 +42,6 @@ PENGUIN_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/opengl/pyramid/makefile.gcc b/samples/opengl/pyramid/makefile.gcc
index 3175e06fd7..88472d4152 100644
--- a/samples/opengl/pyramid/makefile.gcc
+++ b/samples/opengl/pyramid/makefile.gcc
@@ -22,12 +22,12 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 PYRAMID_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 PYRAMID_OBJECTS =  \
 	$(OBJS)\pyramid_sample_rc.o \
 	$(OBJS)\pyramid_pyramid.o \
@@ -37,9 +37,6 @@ PYRAMID_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/ownerdrw/makefile.gcc b/samples/ownerdrw/makefile.gcc
index ead3e9c1da..0fd97a4b8c 100644
--- a/samples/ownerdrw/makefile.gcc
+++ b/samples/ownerdrw/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 OWNERDRW_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 OWNERDRW_OBJECTS =  \
 	$(OBJS)\ownerdrw_ownerdrw.o \
 	$(OBJS)\ownerdrw_ownerdrw_rc.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/popup/makefile.gcc b/samples/popup/makefile.gcc
index c8d8df912e..de7459ba31 100644
--- a/samples/popup/makefile.gcc
+++ b/samples/popup/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 POPUP_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 POPUP_OBJECTS =  \
 	$(OBJS)\popup_popup.o \
 	$(OBJS)\popup_sample_rc.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/power/makefile.gcc b/samples/power/makefile.gcc
index c24f078801..a374675392 100644
--- a/samples/power/makefile.gcc
+++ b/samples/power/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 POWER_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 POWER_OBJECTS =  \
 	$(OBJS)\power_sample_rc.o \
 	$(OBJS)\power_power.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/preferences/makefile.gcc b/samples/preferences/makefile.gcc
index afb31dfe9e..06333ecda2 100644
--- a/samples/preferences/makefile.gcc
+++ b/samples/preferences/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 PREFERENCES_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 PREFERENCES_OBJECTS =  \
 	$(OBJS)\preferences_sample_rc.o \
 	$(OBJS)\preferences_preferences.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/printing/makefile.gcc b/samples/printing/makefile.gcc
index 0eab59bf72..23f9ab53ba 100644
--- a/samples/printing/makefile.gcc
+++ b/samples/printing/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 PRINTING_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 PRINTING_OBJECTS =  \
 	$(OBJS)\printing_sample_rc.o \
 	$(OBJS)\printing_printing.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/propgrid/makefile.gcc b/samples/propgrid/makefile.gcc
index b84bd44bbf..17d0cb59d7 100644
--- a/samples/propgrid/makefile.gcc
+++ b/samples/propgrid/makefile.gcc
@@ -22,12 +22,12 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 PROPGRID_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 PROPGRID_OBJECTS =  \
 	$(OBJS)\propgrid_propgrid.o \
 	$(OBJS)\propgrid_propgrid_minimal.o \
@@ -37,9 +37,6 @@ PROPGRID_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/regtest/makefile.gcc b/samples/regtest/makefile.gcc
index ec0c93442a..ca5c74633d 100644
--- a/samples/regtest/makefile.gcc
+++ b/samples/regtest/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 REGTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 REGTEST_OBJECTS =  \
 	$(OBJS)\regtest_regtest.o \
 	$(OBJS)\regtest_regtest_rc.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/render/makefile.gcc b/samples/render/makefile.gcc
index 424a771c1b..7fc270bf94 100644
--- a/samples/render/makefile.gcc
+++ b/samples/render/makefile.gcc
@@ -22,10 +22,10 @@ LIBDIRNAME = \
 	.\..\..\lib\$(COMPILER_PREFIX)$(COMPILER_VERSION)_$(LIBTYPE_SUFFIX)$(CFG)
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
-RENDER_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+RENDER_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -I. $(__DLLFLAG_p) \
 	-I.\..\..\samples -DNOPCH $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -33,20 +33,16 @@ RENDER_OBJECTS =  \
 	$(OBJS)\render_sample_rc.o \
 	$(OBJS)\render_render.o
 RENDDLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall \
-	-DWXUSINGDLL $(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy \
-	$(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -DWXUSINGDLL $(__RTTIFLAG) \
+	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 RENDDLL_OBJECTS =  \
 	$(OBJS)\renddll_renddll.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/ribbon/makefile.gcc b/samples/ribbon/makefile.gcc
index 2d5f698452..2dad647134 100644
--- a/samples/ribbon/makefile.gcc
+++ b/samples/ribbon/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 RIBBON_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 RIBBON_OBJECTS =  \
 	$(OBJS)\ribbon_ribbondemo.o \
 	$(OBJS)\ribbon_sample_rc.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/richtext/makefile.gcc b/samples/richtext/makefile.gcc
index b6c02aa5c7..d318f93e07 100644
--- a/samples/richtext/makefile.gcc
+++ b/samples/richtext/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 RICHTEXT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 RICHTEXT_OBJECTS =  \
 	$(OBJS)\richtext_richtext.o \
 	$(OBJS)\richtext_sample_rc.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/sashtest/makefile.gcc b/samples/sashtest/makefile.gcc
index e533e55042..f3c8c16125 100644
--- a/samples/sashtest/makefile.gcc
+++ b/samples/sashtest/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 SASHTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 SASHTEST_OBJECTS =  \
 	$(OBJS)\sashtest_sashtest.o \
 	$(OBJS)\sashtest_sashtest_rc.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/scroll/makefile.gcc b/samples/scroll/makefile.gcc
index b55f55d886..bd1c9e588e 100644
--- a/samples/scroll/makefile.gcc
+++ b/samples/scroll/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 SCROLL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 SCROLL_OBJECTS =  \
 	$(OBJS)\scroll_sample_rc.o \
 	$(OBJS)\scroll_scroll.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/secretstore/makefile.gcc b/samples/secretstore/makefile.gcc
index 69b3a7b95c..c04ff380c3 100644
--- a/samples/secretstore/makefile.gcc
+++ b/samples/secretstore/makefile.gcc
@@ -22,20 +22,17 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 SECRETSTORE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 \
+	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
+	$(CXXFLAGS)
 SECRETSTORE_OBJECTS =  \
 	$(OBJS)\secretstore_secretstore.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/shaped/makefile.gcc b/samples/shaped/makefile.gcc
index b8a9249ef4..bad311b4d3 100644
--- a/samples/shaped/makefile.gcc
+++ b/samples/shaped/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 SHAPED_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 SHAPED_OBJECTS =  \
 	$(OBJS)\shaped_sample_rc.o \
 	$(OBJS)\shaped_shaped.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/sockets/makefile.gcc b/samples/sockets/makefile.gcc
index 3b21e9b76f..0a08d15ef0 100644
--- a/samples/sockets/makefile.gcc
+++ b/samples/sockets/makefile.gcc
@@ -21,20 +21,20 @@ LIBDIRNAME = \
 	.\..\..\lib\$(COMPILER_PREFIX)$(COMPILER_VERSION)_$(LIBTYPE_SUFFIX)$(CFG)
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
-CLIENT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+CLIENT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -I. $(__DLLFLAG_p) \
 	-I.\..\..\samples -DNOPCH $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 CLIENT_OBJECTS =  \
 	$(OBJS)\client_sample_rc.o \
 	$(OBJS)\client_client.o
-SERVER_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+SERVER_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -I. $(__DLLFLAG_p) \
 	-I.\..\..\samples -DNOPCH $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -42,29 +42,26 @@ SERVER_OBJECTS =  \
 	$(OBJS)\server_sample_rc.o \
 	$(OBJS)\server_server.o
 BASECLIENT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall \
-	-I. $(__DLLFLAG_p) -DwxUSE_GUI=0 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
+	$(CXXFLAGS)
 BASECLIENT_OBJECTS =  \
 	$(OBJS)\baseclient_baseclient.o
 BASESERVER_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall \
-	-I. $(__DLLFLAG_p) -DwxUSE_GUI=0 $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 \
+	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
+	$(CXXFLAGS)
 BASESERVER_OBJECTS =  \
 	$(OBJS)\baseserver_baseserver.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/sound/makefile.gcc b/samples/sound/makefile.gcc
index 5c6c220d2e..4e657ddd9f 100644
--- a/samples/sound/makefile.gcc
+++ b/samples/sound/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 SOUND_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 SOUND_OBJECTS =  \
 	$(OBJS)\sound_sound.o \
 	$(OBJS)\sound_sound_rc.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/splash/makefile.gcc b/samples/splash/makefile.gcc
index 717c28224b..f9118c69e7 100644
--- a/samples/splash/makefile.gcc
+++ b/samples/splash/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 SPLASH_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 SPLASH_OBJECTS =  \
 	$(OBJS)\splash_splash.o \
 	$(OBJS)\splash_sample_rc.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/splitter/makefile.gcc b/samples/splitter/makefile.gcc
index a9a000e823..af606d52c4 100644
--- a/samples/splitter/makefile.gcc
+++ b/samples/splitter/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 SPLITTER_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 SPLITTER_OBJECTS =  \
 	$(OBJS)\splitter_sample_rc.o \
 	$(OBJS)\splitter_splitter.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/statbar/makefile.gcc b/samples/statbar/makefile.gcc
index 8d29da7f2d..2f9a6efe25 100644
--- a/samples/statbar/makefile.gcc
+++ b/samples/statbar/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 STATBAR_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 STATBAR_OBJECTS =  \
 	$(OBJS)\statbar_sample_rc.o \
 	$(OBJS)\statbar_statbar.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/stc/makefile.gcc b/samples/stc/makefile.gcc
index ac12d63c0f..bfe4e2b3ae 100644
--- a/samples/stc/makefile.gcc
+++ b/samples/stc/makefile.gcc
@@ -22,12 +22,12 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 STCTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 STCTEST_OBJECTS =  \
 	$(OBJS)\stctest_sample_rc.o \
 	$(OBJS)\stctest_stctest.o \
@@ -36,9 +36,6 @@ STCTEST_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/svg/makefile.gcc b/samples/svg/makefile.gcc
index 32ee29fa69..ebdec100f9 100644
--- a/samples/svg/makefile.gcc
+++ b/samples/svg/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 SVGTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 SVGTEST_OBJECTS =  \
 	$(OBJS)\svgtest_sample_rc.o \
 	$(OBJS)\svgtest_svgtest.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/taborder/makefile.gcc b/samples/taborder/makefile.gcc
index fcebb2fbd8..239cf22a0d 100644
--- a/samples/taborder/makefile.gcc
+++ b/samples/taborder/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 TABORDER_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 TABORDER_OBJECTS =  \
 	$(OBJS)\taborder_sample_rc.o \
 	$(OBJS)\taborder_taborder.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/taskbar/makefile.gcc b/samples/taskbar/makefile.gcc
index d646bda837..1f43d5dd5d 100644
--- a/samples/taskbar/makefile.gcc
+++ b/samples/taskbar/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 TASKBAR_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 TASKBAR_OBJECTS =  \
 	$(OBJS)\taskbar_sample_rc.o \
 	$(OBJS)\taskbar_tbtest.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/taskbarbutton/makefile.gcc b/samples/taskbarbutton/makefile.gcc
index 971ad13f83..656f5720e5 100644
--- a/samples/taskbarbutton/makefile.gcc
+++ b/samples/taskbarbutton/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 TASKBARBUTTON_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 TASKBARBUTTON_OBJECTS =  \
 	$(OBJS)\taskbarbutton_sample_rc.o \
 	$(OBJS)\taskbarbutton_taskbarbutton.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/text/makefile.gcc b/samples/text/makefile.gcc
index d7fcc5dd3a..58976affce 100644
--- a/samples/text/makefile.gcc
+++ b/samples/text/makefile.gcc
@@ -21,10 +21,10 @@ LIBDIRNAME = \
 	.\..\..\lib\$(COMPILER_PREFIX)$(COMPILER_VERSION)_$(LIBTYPE_SUFFIX)$(CFG)
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
-TEXT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+TEXT_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
 	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -34,9 +34,6 @@ TEXT_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/thread/makefile.gcc b/samples/thread/makefile.gcc
index 934c31b13f..cbba94d74b 100644
--- a/samples/thread/makefile.gcc
+++ b/samples/thread/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 THREAD_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 THREAD_OBJECTS =  \
 	$(OBJS)\thread_sample_rc.o \
 	$(OBJS)\thread_thread.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/toolbar/makefile.gcc b/samples/toolbar/makefile.gcc
index e720ee2403..4591bba821 100644
--- a/samples/toolbar/makefile.gcc
+++ b/samples/toolbar/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 TOOLBAR_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 TOOLBAR_OBJECTS =  \
 	$(OBJS)\toolbar_toolbar.o \
 	$(OBJS)\toolbar_toolbar_rc.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/treectrl/makefile.gcc b/samples/treectrl/makefile.gcc
index 222b3b8bb7..7c8a40b519 100644
--- a/samples/treectrl/makefile.gcc
+++ b/samples/treectrl/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 TREECTRL_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 TREECTRL_OBJECTS =  \
 	$(OBJS)\treectrl_treetest.o \
 	$(OBJS)\treectrl_sample_rc.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/treelist/makefile.gcc b/samples/treelist/makefile.gcc
index a65e46bf19..f627b0f6d0 100644
--- a/samples/treelist/makefile.gcc
+++ b/samples/treelist/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 TREELIST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 TREELIST_OBJECTS =  \
 	$(OBJS)\treelist_sample_rc.o \
 	$(OBJS)\treelist_treelist.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/typetest/makefile.gcc b/samples/typetest/makefile.gcc
index 19a5a39eee..483593a5ef 100644
--- a/samples/typetest/makefile.gcc
+++ b/samples/typetest/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 TYPETEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 TYPETEST_OBJECTS =  \
 	$(OBJS)\typetest_sample_rc.o \
 	$(OBJS)\typetest_typetest.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/uiaction/makefile.gcc b/samples/uiaction/makefile.gcc
index f95124f22f..8fac0a6ce5 100644
--- a/samples/uiaction/makefile.gcc
+++ b/samples/uiaction/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 UIACTION_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 UIACTION_OBJECTS =  \
 	$(OBJS)\uiaction_sample_rc.o \
 	$(OBJS)\uiaction_uiaction.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/validate/makefile.gcc b/samples/validate/makefile.gcc
index f8f372206d..23e4b96b04 100644
--- a/samples/validate/makefile.gcc
+++ b/samples/validate/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 VALIDATE_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 VALIDATE_OBJECTS =  \
 	$(OBJS)\validate_validate.o \
 	$(OBJS)\validate_sample_rc.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/vscroll/makefile.gcc b/samples/vscroll/makefile.gcc
index 07db8eb6ed..2d9a07669a 100644
--- a/samples/vscroll/makefile.gcc
+++ b/samples/vscroll/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 VSTEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 VSTEST_OBJECTS =  \
 	$(OBJS)\vstest_sample_rc.o \
 	$(OBJS)\vstest_vstest.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/webview/makefile.gcc b/samples/webview/makefile.gcc
index 43c04820b1..f08ed22725 100644
--- a/samples/webview/makefile.gcc
+++ b/samples/webview/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 WEBVIEW_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 WEBVIEW_OBJECTS =  \
 	$(OBJS)\webview_webview.o \
 	$(OBJS)\webview_sample_rc.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/widgets/makefile.gcc b/samples/widgets/makefile.gcc
index eaae56fd73..036316f9bb 100644
--- a/samples/widgets/makefile.gcc
+++ b/samples/widgets/makefile.gcc
@@ -22,12 +22,12 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 WIDGETS_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 WIDGETS_OBJECTS =  \
 	$(OBJS)\widgets_activityindicator.o \
 	$(OBJS)\widgets_bmpcombobox.o \
@@ -65,9 +65,6 @@ WIDGETS_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/wizard/makefile.gcc b/samples/wizard/makefile.gcc
index 6012de7cb3..ed3019e3e4 100644
--- a/samples/wizard/makefile.gcc
+++ b/samples/wizard/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 WIZARD_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 WIZARD_OBJECTS =  \
 	$(OBJS)\wizard_sample_rc.o \
 	$(OBJS)\wizard_wizard.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/wrapsizer/makefile.gcc b/samples/wrapsizer/makefile.gcc
index e32884452e..b1e58beb22 100644
--- a/samples/wrapsizer/makefile.gcc
+++ b/samples/wrapsizer/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 WRAPSIZER_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 WRAPSIZER_OBJECTS =  \
 	$(OBJS)\wrapsizer_sample_rc.o \
 	$(OBJS)\wrapsizer_wrapsizer.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/xrc/makefile.gcc b/samples/xrc/makefile.gcc
index 719d9e669c..4011941e98 100644
--- a/samples/xrc/makefile.gcc
+++ b/samples/xrc/makefile.gcc
@@ -22,12 +22,12 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 XRCDEMO_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 XRCDEMO_OBJECTS =  \
 	$(OBJS)\xrcdemo_sample_rc.o \
 	$(OBJS)\xrcdemo_xrcdemo.o \
@@ -38,9 +38,6 @@ XRCDEMO_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/samples/xti/makefile.gcc b/samples/xti/makefile.gcc
index b8c258a565..2f4dc5ec36 100644
--- a/samples/xti/makefile.gcc
+++ b/samples/xti/makefile.gcc
@@ -21,10 +21,10 @@ LIBDIRNAME = \
 	.\..\..\lib\$(COMPILER_PREFIX)$(COMPILER_VERSION)_$(LIBTYPE_SUFFIX)$(CFG)
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
-XTI_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+XTI_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
 	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -36,9 +36,6 @@ XTI_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/setup.h.in b/setup.h.in
index 47fa4e5a02..89aac7ba68 100644
--- a/setup.h.in
+++ b/setup.h.in
@@ -1201,9 +1201,6 @@
 /* Define if you have the <langinfo.h> header file.  */
 #undef HAVE_LANGINFO_H
 
-/* Define if you have the <w32api.h> header file (mingw,cygwin).  */
-#undef HAVE_W32API_H
-
 /* Define if you have the <sys/soundcard.h> header file. */
 #undef HAVE_SYS_SOUNDCARD_H
 
diff --git a/setup.h_vms b/setup.h_vms
index 237f7f50f4..6ecbeb5a02 100644
--- a/setup.h_vms
+++ b/setup.h_vms
@@ -1327,9 +1327,6 @@ typedef pid_t GPid;
 /* Define if you have the <langinfo.h> header file.  */
 #define HAVE_LANGINFO_H 1
 
-/* Define if you have the <w32api.h> header file (mingw,cygwin).  */
-#undef HAVE_W32API_H
-
 /* Define if you have the <esd.h> header file.  */
 /* #undef HAVE_ESD_H */
 
diff --git a/tests/benchmarks/makefile.gcc b/tests/benchmarks/makefile.gcc
index 0d38295188..dfc72b7fee 100644
--- a/tests/benchmarks/makefile.gcc
+++ b/tests/benchmarks/makefile.gcc
@@ -21,10 +21,10 @@ LIBDIRNAME = \
 	.\..\..\lib\$(COMPILER_PREFIX)$(COMPILER_VERSION)_$(LIBTYPE_SUFFIX)$(CFG)
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
-BENCH_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+BENCH_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 \
 	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
 	$(CXXFLAGS)
@@ -40,33 +40,30 @@ BENCH_OBJECTS =  \
 	$(OBJS)\bench_tls.o \
 	$(OBJS)\bench_printfbench.o
 BENCH_GUI_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG) \
-	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 BENCH_GUI_OBJECTS =  \
 	$(OBJS)\bench_gui_sample_rc.o \
 	$(OBJS)\bench_gui_bench.o \
 	$(OBJS)\bench_gui_display.o \
 	$(OBJS)\bench_gui_image.o
 BENCH_GRAPHICS_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall \
-	-I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG) \
-	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 BENCH_GRAPHICS_OBJECTS =  \
 	$(OBJS)\bench_graphics_sample_rc.o \
 	$(OBJS)\bench_graphics_graphics.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/tests/makefile.gcc b/tests/makefile.gcc
index c074804243..4ba87cfaf9 100644
--- a/tests/makefile.gcc
+++ b/tests/makefile.gcc
@@ -21,10 +21,10 @@ LIBDIRNAME = \
 	.\..\lib\$(COMPILER_PREFIX)$(COMPILER_VERSION)_$(LIBTYPE_SUFFIX)$(CFG)
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
-TEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\include \
+TEST_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 \
 	-I.\..\3rdparty\catch\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
 	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
@@ -116,12 +116,12 @@ TEST_OBJECTS =  \
 	$(OBJS)\test_xlocale.o \
 	$(OBJS)\test_xmltest.o
 TEST_DRAWING_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\include $(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -I. \
-	$(__DLLFLAG_p) -DwxUSE_GUI=0 -I.\..\3rdparty\catch\include $(__RTTIFLAG) \
-	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 \
+	-I.\..\3rdparty\catch\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 TEST_DRAWING_OBJECTS =  \
 	$(OBJS)\test_drawing_dummy.o \
 	$(OBJS)\test_drawing_test.o \
@@ -130,22 +130,20 @@ TEST_DRAWING_OBJECTS =  \
 	$(OBJS)\test_drawing_basictest.o \
 	$(OBJS)\test_drawing_fonttest.o
 TEST_DRAWINGPLUGIN_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) \
-	$(__THREADSFLAG) $(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ \
-	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
-	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
-	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\include \
+	$(__THREADSFLAG) -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
+	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
+	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall $(__DLLFLAG_p) $(__RTTIFLAG) \
 	$(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 TEST_DRAWINGPLUGIN_OBJECTS =  \
 	$(OBJS)\test_drawingplugin_pluginsample.o
 TEST_GUI_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\include $(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\samples -DNOPCH -I.\..\3rdparty\catch\include \
-	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -I. $(__DLLFLAG_p) -I.\..\samples \
+	-DNOPCH -I.\..\3rdparty\catch\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 TEST_GUI_OBJECTS =  \
 	$(OBJS)\test_gui_sample_rc.o \
 	$(OBJS)\test_gui_dummy.o \
@@ -250,13 +248,12 @@ TEST_GUI_OBJECTS =  \
 	$(OBJS)\test_gui_setsize.o \
 	$(OBJS)\test_gui_xrctest.o
 TEST_ALLHEADERS_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\include $(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -I. \
-	$(__DLLFLAG_p) -I.\..\samples -DNOPCH -I.\..\3rdparty\catch\include \
-	$(__RTTIFLAG) $(__EXCEPTIONSFLAG) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
-	$(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES) -W -Wall -I. $(__DLLFLAG_p) -I.\..\samples \
+	-DNOPCH -I.\..\3rdparty\catch\include $(__RTTIFLAG) $(__EXCEPTIONSFLAG) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 TEST_ALLHEADERS_OBJECTS =  \
 	$(OBJS)\test_allheaders_sample_rc.o \
 	$(OBJS)\test_allheaders_dummy.o \
@@ -267,9 +264,6 @@ TEST_ALLHEADERS_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/utils/emulator/src/makefile.gcc b/utils/emulator/src/makefile.gcc
index 8707e5a99f..8c109b641e 100644
--- a/utils/emulator/src/makefile.gcc
+++ b/utils/emulator/src/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 WXEMULATOR_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 WXEMULATOR_OBJECTS =  \
 	$(OBJS)\wxemulator_sample_rc.o \
 	$(OBJS)\wxemulator_emulator.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/utils/execmon/makefile.gcc b/utils/execmon/makefile.gcc
index 86871a6c1d..50fb3e1940 100644
--- a/utils/execmon/makefile.gcc
+++ b/utils/execmon/makefile.gcc
@@ -22,20 +22,17 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 EXECMON_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 \
+	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
+	$(CXXFLAGS)
 EXECMON_OBJECTS =  \
 	$(OBJS)\execmon_execmon.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/utils/helpview/src/makefile.gcc b/utils/helpview/src/makefile.gcc
index 632e5e7993..807b16a178 100644
--- a/utils/helpview/src/makefile.gcc
+++ b/utils/helpview/src/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 HELPVIEW_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 HELPVIEW_OBJECTS =  \
 	$(OBJS)\helpview_helpview.o \
 	$(OBJS)\helpview_helpview_rc.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/utils/hhp2cached/makefile.gcc b/utils/hhp2cached/makefile.gcc
index 670f16ca1b..2525e0c456 100644
--- a/utils/hhp2cached/makefile.gcc
+++ b/utils/hhp2cached/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 HHP2CACHED_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 HHP2CACHED_OBJECTS =  \
 	$(OBJS)\hhp2cached_hhp2cached.o \
 	$(OBJS)\hhp2cached_hhp2cached_rc.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/utils/ifacecheck/src/makefile.gcc b/utils/ifacecheck/src/makefile.gcc
index 6e9d62a04a..f2020cbd92 100644
--- a/utils/ifacecheck/src/makefile.gcc
+++ b/utils/ifacecheck/src/makefile.gcc
@@ -22,21 +22,18 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 IFACECHECK_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
-	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 \
+	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
+	$(CXXFLAGS)
 IFACECHECK_OBJECTS =  \
 	$(OBJS)\ifacecheck_ifacecheck.o \
 	$(OBJS)\ifacecheck_xmlparser.o
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/utils/makefile.gcc b/utils/makefile.gcc
index 4dbdc88c14..3956a67270 100644
--- a/utils/makefile.gcc
+++ b/utils/makefile.gcc
@@ -29,8 +29,7 @@ MAKEARGS = LINK_DLL_FLAGS="$(LINK_DLL_FLAGS)" \
 	USE_THREADS="$(USE_THREADS)" USE_CAIRO="$(USE_CAIRO)" \
 	OFFICIAL_BUILD="$(OFFICIAL_BUILD)" VENDOR="$(VENDOR)" \
 	WX_FLAVOUR="$(WX_FLAVOUR)" WX_LIB_FLAVOUR="$(WX_LIB_FLAVOUR)" CFG="$(CFG)" \
-	RUNTIME_LIBS="$(RUNTIME_LIBS)" GCC_VERSION="$(GCC_VERSION)" \
-	WINDRES="$(WINDRES)"
+	RUNTIME_LIBS="$(RUNTIME_LIBS)" WINDRES="$(WINDRES)"
 
 ### Conditionally set variables: ###
 
diff --git a/utils/screenshotgen/src/makefile.gcc b/utils/screenshotgen/src/makefile.gcc
index 861ac341f8..91f3c0360e 100644
--- a/utils/screenshotgen/src/makefile.gcc
+++ b/utils/screenshotgen/src/makefile.gcc
@@ -22,12 +22,12 @@ LIBDIRNAME = \
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
 SCREENSHOTGEN_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) \
-	$(GCCFLAGS) -DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) \
-	$(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) \
-	$(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) \
-	-I$(SETUPHDIR) -I.\..\..\..\include $(____CAIRO_INCLUDEDIR_FILENAMES_p) -W \
-	-Wall -I. $(__DLLFLAG_p) -I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) \
-	$(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
+	-D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\..\include \
+	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) \
+	-I.\..\..\..\samples -DNOPCH $(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) \
+	-Wno-ctor-dtor-privacy $(CPPFLAGS) $(CXXFLAGS)
 SCREENSHOTGEN_OBJECTS =  \
 	$(OBJS)\screenshotgen_screenshot_app.o \
 	$(OBJS)\screenshotgen_screenshot_main.o \
@@ -38,9 +38,6 @@ SCREENSHOTGEN_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif
diff --git a/utils/wxrc/makefile.gcc b/utils/wxrc/makefile.gcc
index 1b596f48f9..17fdefbc6c 100644
--- a/utils/wxrc/makefile.gcc
+++ b/utils/wxrc/makefile.gcc
@@ -21,10 +21,10 @@ LIBDIRNAME = \
 	.\..\..\lib\$(COMPILER_PREFIX)$(COMPILER_VERSION)_$(LIBTYPE_SUFFIX)$(CFG)
 SETUPHDIR = \
 	$(LIBDIRNAME)\$(PORTNAME)$(WXUNIVNAME)$(WXUNICODEFLAG)$(WXDEBUGFLAG)
-WXRC_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) $(GCCFLAGS) \
-	-DHAVE_W32API_H -D__WXMSW__ $(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) \
-	$(__NDEBUG_DEFINE_p) $(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) \
-	$(__THREAD_DEFINE_p) $(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
+WXRC_CXXFLAGS = $(__DEBUGINFO) $(__OPTIMIZEFLAG_2) $(__THREADSFLAG) -D__WXMSW__ \
+	$(__WXUNIV_DEFINE_p) $(__DEBUG_DEFINE_p) $(__NDEBUG_DEFINE_p) \
+	$(__EXCEPTIONS_DEFINE_p) $(__RTTI_DEFINE_p) $(__THREAD_DEFINE_p) \
+	$(__UNICODE_DEFINE_p) -I$(SETUPHDIR) -I.\..\..\include \
 	$(____CAIRO_INCLUDEDIR_FILENAMES_p) -W -Wall -I. $(__DLLFLAG_p) -DwxUSE_GUI=0 \
 	$(__RTTIFLAG_5) $(__EXCEPTIONSFLAG_6) -Wno-ctor-dtor-privacy $(CPPFLAGS) \
 	$(CXXFLAGS)
@@ -33,9 +33,6 @@ WXRC_OBJECTS =  \
 
 ### Conditionally set variables: ###
 
-ifeq ($(GCC_VERSION),2.95)
-GCCFLAGS = -fvtable-thunks
-endif
 ifeq ($(USE_GUI),0)
 PORTNAME = base
 endif