Update for building zlib as an os2 dll

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@6565 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/zlib/MAKEFILE.VA

@@ -7,7 +7,7 @@
 #
 # "%W% %G%"
 #
-# Makefile : Builds os2png.lib library for OS/2 3.0/4.0
+# Makefile : Builds os2zlib.lib library for OS/2 3.0/4.0
 
 # Suffixes
 OBJSUFF=obj
@@ -18,13 +18,21 @@ OS2LINKFLAGS=/BASE:0x00010000 /PMTYPE:PM /NOE /NOD /ALIGN:16
 OS2LIBFLAGS=/NOL /NOE
 OS2LIBS=CPPOM30.lib CPPOOC3.LIB OS2386.LIB
 
+!if "$(WXMAKINGDLL)" != "0"
+EXTRADLLFLAGS=/DWXMAKINGDLL=1 /Ge- /D__OS2DLL__
+EXTRALNKFLAGS=/DLL
+!endif
+
 # Change WXDIR or WXWIN to wherever wxWindows is found
 WXDIR = $(WXWIN)
 
 OS2ZLIBDIR=$(WXDIR)\src\zlib
 OS2ZLIBINC=$(WINPNGDIR)
+!if "$(WXMAKINGDLL)" != "1"
 OS2ZLIBLIB=$(WXDIR)\lib\os2zlib.lib
-
+!else
+OS2ZLIBLIB=$(WXDIR)\lib\os2zlib.dll
+!endif
 INC=
 
 !ifndef FINAL
@@ -42,7 +50,11 @@ MAKEPRECOMP=/Fi$(PCH)
 !endif
 
 !if "$(FINAL)" == "0"
+!if "$(WXMAKINGDLL)" == "1"
+D=DebugOS2DLL
+!else
 D=DebugOS2
+!endif
 OPT =
 DEBUG_FLAGS= /Ti /D__WXDEBUG__ #/Fb
 LINK_DEBUG_FLAGS=/DEBUG
@@ -50,7 +62,11 @@ CRTFLAG=/Gm /Gd
 !else
 # /O1 - smallest code
 # /O2 - fastest code
+!if "$(WXMAKINGDLL)" == "1"
+D=RelseOS2DLL
+!else
 D=RelseOS2
+!endif
 OPT = /O+ /Oc /G5
 DEBUG_FLAGS=
 LINK_DEBUG_FLAGS=/RELEASE
@@ -60,7 +76,8 @@ CRTFLAG=/Gm /Gd
 !if [md $(OS2ZLIBDIR)\$D]
 !endif
 
-CPPFLAGS=$(OS2FLAGS) $(DEBUG_FLAGS) $(PRECOMP) $(INC) $(OPT) $(CRTFLAG)
+CPPFLAGS=$(OS2FLAGS) $(EXTRADLLFLAGS) $(DEBUG_FLAGS) $(PRECOMP) $(INC) $(OPT) $(CRTFLAG)
+LINKFKAGS=$(OS2LINKFLAGS) $(EXTRALNKFLAGS)
 
 {..\zlib}.c{..\zlib\$D}.obj:
     @echo $<
@@ -86,6 +103,8 @@ OBJECTS = \
 
 all: $(OS2ZLIBLIB)
 
+!if "$(WXMAKINGDLL)" != "1"
+
 $(WXDIR)\lib\os2zlib.lib: $(OBJECTS)
  touch $(WXDIR)\lib\os2zlib.lib
  del $(WXDIR)\lib\os2zlib.lib
@@ -93,6 +112,20 @@ $(WXDIR)\lib\os2zlib.lib: $(OBJECTS)
     $**;
 <<
 
+!else
+
+# Update the dynamic link library
+$(WXDIR)\lib\os2zlib.dll: $(OBJECTS)
+    icc @<<
+    /B" $(LINKFLAGS)" /Fe$@
+    $(LIBS)
+    $(OBJECTS)
+    $(WXDIR)\lib\os2zlib.def
+<<
+    implib $(WXDIR)\lib\os2zlibd.lib $(WXDIR)\lib\os2zlib.def
+
+!endif
+
 clean:
         del      $(OS2ZLIBLIB)
         erase /N $(OS2ZLIBDIR)\$D