implemented --with-<lib> options (yes, no, sys, and builtin) for libjpeg,

libtiff, libpng, freetype, regex and zlib
default is sys which falls back to builtin if the system library is not found


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@12155 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

configure.in

@@ -32,7 +32,7 @@ for ac_dir in $1;
 ])
 
 dnl ---------------------------------------------------------------------------
-dnl call WX_PATH_FIND_LIBRARIES(search path, header name), sets ac_find_includes
+dnl call WX_PATH_FIND_LIBRARIES(search path, header name), sets ac_find_libraries
 dnl to the full name of the file that was found or leaves it empty if not found
 dnl ---------------------------------------------------------------------------
 AC_DEFUN(WX_PATH_FIND_LIBRARIES,
@@ -205,7 +205,7 @@ AC_DEFUN(WX_ARG_CACHE_FLUSH,
         ])
 
 dnl this macro checks for a three-valued command line --with argument:
-dnl   possible arguments are 'yes', 'no', or 'sys'
+dnl   possible arguments are 'yes', 'no', 'sys', or 'builtin'
 dnl usage: WX_ARG_SYS_WITH(option, helpmessage, variable-name)
 AC_DEFUN(WX_ARG_SYS_WITH,
         [
@@ -219,8 +219,10 @@ AC_DEFUN(WX_ARG_SYS_WITH,
                           ac_cv_use_$1='$3=no'
                         elif test "$withval" = sys; then
                           ac_cv_use_$1='$3=sys'
+                        elif test "$withval" = builtin; then
+                          ac_cv_use_$1='$3=builtin'
                         else
-                          AC_MSG_ERROR([Invalid value for --with-$1: should be yes, no or sys])
+                          AC_MSG_ERROR([Invalid value for --with-$1: should be yes, no, sys, or builtin])
                         fi
                       ],
                       [
@@ -245,8 +247,10 @@ AC_DEFUN(WX_ARG_SYS_WITH,
             AC_MSG_RESULT(no)
           elif test "$$3" = sys; then
             AC_MSG_RESULT(system version)
+          elif test "$$3" = builtin; then
+            AC_MSG_RESULT(builtin version)
           else
-            AC_MSG_ERROR([Invalid value for --with-$1: should be yes, no or sys])
+            AC_MSG_ERROR([Invalid value for --with-$1: should be yes, no, sys, or builtin])
           fi
         ])
 
@@ -1598,28 +1602,250 @@ dnl ------------------------------------------------------------------------
 dnl flush the cache because checking for libraries below might abort
 AC_CACHE_SAVE
 
+dnl ---------------------------------------------------------------------------
+dnl Optional libraries
+dnl
+dnl   --with-<lib>=sys
+dnl       looks for system library and fails if not found
+dnl
+dnl   --with-<lib>
+dnl   --with-<lib>=yes
+dnl       looks for system library and, if not found, prints a warning,
+dnl       falls back to the builtin wx version, and continues configuration
+dnl
+dnl   --with-<lib>=builtin
+dnl       uses builtin wx version without searching for system library
+dnl
+dnl   --with-<lib>=no
+dnl   --without-<lib>
+dnl       do not use library (neither system nor builtin wx version)
+dnl
+dnl ---------------------------------------------------------------------------
+
 dnl ------------------------------------------------------------------------
 dnl Check for regex libraries
 dnl ------------------------------------------------------------------------
 
 REGEX_INCLUDE=
 if test "$wxUSE_REGEX" != "no"; then
-    dnl according to Unix 98 specs, regcomp() is in libc but I believe that
+    AC_DEFINE(wxUSE_REGEX)
-    dnl on some old systems it may be in libregex - check for it too?
-    AC_CHECK_HEADER(regex.h, AC_CHECK_FUNCS(regcomp))
 
-    if test "x$ac_cv_func_regcomp" != "xyes"; then
+    if test "$wxUSE_REGEX" = "sys" -o "$wxUSE_REGEX" = "yes" ; then
-        dnl we were asked to use the system version of regex lib only but it
+        dnl according to Unix 98 specs, regcomp() is in libc but I believe that
-        dnl is not available
+        dnl on some old systems it may be in libregex - check for it too?
-        if test "$wxUSE_REGEX" = "sys"; then
+        AC_CHECK_HEADER(regex.h, AC_CHECK_FUNCS(regcomp))
-            AC_MSG_ERROR([system regex library not found! Use --with-regex to use the built-in regex library.])
+
+        if test "x$ac_cv_func_regcomp" != "xyes"; then
+            if test "$wxUSE_REGEX" = "sys" ; then
+                AC_MSG_ERROR([system regex library not found! Use --with-regex to use built-in version])
+            else
+                AC_MSG_WARN([system regex library not found, will compile built-in version instead])
+                wxUSE_REGEX=builtin
+            fi
+        else
+            dnl we are using the system library
+            wxUSE_REGEX=sys
         fi
-
-        dnl fallback to the built in code
-        REGEX_INCLUDE="-I\${top_srcdir}/src/regex"
     fi
 
-    AC_DEFINE(wxUSE_REGEX)
+    if test "$wxUSE_REGEX" = "builtin" ; then
+        REGEX_INCLUDE="-I\${top_srcdir}/src/regex"
+    fi
+fi
+
+dnl ------------------------------------------------------------------------
+dnl Check for zlib compression library
+dnl ------------------------------------------------------------------------
+
+ZLIB_INCLUDE=
+ZLIB_LINK=
+if test "$wxUSE_ZLIB" != "no" ; then
+    AC_DEFINE(wxUSE_ZLIB)
+
+    if test "$wxUSE_ZLIB" = "sys" -o "$wxUSE_ZLIB" = "yes" ; then
+        AC_CHECK_HEADER(zlib.h, AC_CHECK_LIB(z, deflate, ZLIB_LINK="-lz"))
+
+        if test "x$ZLIB_LINK" = "x" ; then
+            if test "$wxUSE_ZLIB" = "sys" ; then
+                AC_MSG_ERROR([system zlib compression library not found! Use --with-zlib=builtin to use built-in version])
+            else
+                AC_MSG_WARN([system zlib compression library not found, will compile built-in version instead])
+                wxUSE_ZLIB=builtin
+            fi
+        else
+            dnl we are using the system library
+            wxUSE_ZLIB=sys
+        fi
+    fi
+
+    if test "$wxUSE_ZLIB" = "builtin" ; then
+        ZLIB_INCLUDE="-I\${top_srcdir}/src/zlib"
+    fi
+fi
+
+dnl ------------------------------------------------------------------------
+dnl Check for png library
+dnl ------------------------------------------------------------------------
+
+PNG_INCLUDE=
+PNG_LINK=
+if test "$wxUSE_LIBPNG" != "no" ; then
+    AC_DEFINE(wxUSE_LIBPNG)
+
+    dnl for the check below to have a chance to succeed, we must already have
+    dnl libz somewhere
+    if test "$wxUSE_LIBPNG" = "sys" -a "$wxUSE_ZLIB" != "sys" ; then
+        AC_MSG_WARN([system png library doesn't work without system zlib, will compile built-in instead])
+        wxUSE_LIBPNG=builtin
+    fi
+
+    if test "$wxUSE_LIBPNG" = "sys" -o "$wxUSE_LIBPNG" = "yes" ; then
+        AC_CHECK_HEADER(png.h,
+                        AC_CHECK_LIB(png, png_check_sig,
+                                     PNG_LINK="-lpng",
+                                     ,
+                                     [-lz -lm])
+                       )
+
+        if test "x$PNG_LINK" = "x" ; then
+            if test "$wxUSE_LIBPNG" = "sys" ; then
+                AC_MSG_ERROR([system png library not found! Use --with-libpng=builtin to use built-in version])
+            else
+                AC_MSG_WARN([system png library not found, will compile built-in version instead])
+                wxUSE_LIBPNG=builtin
+            fi
+        else
+            dnl we are using the system library
+            wxUSE_LIBPNG=yes
+        fi
+    fi
+
+    if test "$wxUSE_LIBPNG" = "builtin" ; then
+        PNG_INCLUDE="-I\${top_srcdir}/src/png"
+    fi
+
+    SAMPLES_SUBDIRS="$SAMPLES_SUBDIRS png"
+fi
+
+dnl ------------------------------------------------------------------------
+dnl Check for jpeg library
+dnl ------------------------------------------------------------------------
+
+JPEG_INCLUDE=
+JPEG_LINK=
+if test "$wxUSE_LIBJPEG" != "no" ; then
+    AC_DEFINE(wxUSE_LIBJPEG)
+
+    if test "$wxUSE_LIBJPEG" = "sys" -o "$wxUSE_LIBJPEG" = "yes" ; then
+        dnl can't use AC_CHECK_HEADER as jconfig.h defines things like
+        dnl HAVE_STDLIB_H which are already defined and this provokes
+        dnl a compiler warning which configure considers as an error...
+        AC_MSG_CHECKING(for jpeglib.h)
+        AC_CACHE_VAL(ac_cv_header_jpeglib_h,
+            AC_TRY_COMPILE(
+                [
+                    #undef HAVE_STDLIB_H
+                    #include <stdio.h>
+                    #include <jpeglib.h>
+                ],
+                [
+                ],
+                ac_cv_header_jpeglib_h=yes,
+                ac_cv_header_jpeglib_h=no
+            )
+        )
+        AC_MSG_RESULT($ac_cv_header_jpeglib_h)
+
+        if test "$ac_cv_header_jpeglib_h" = "yes"; then
+            AC_CHECK_LIB(jpeg, jpeg_read_header, JPEG_LINK="-ljpeg")
+        fi
+
+        if test "x$JPEG_LINK" = "x" ; then
+            if test "$wxUSE_LIBJPEG" = "sys" ; then
+                AC_MSG_ERROR([system jpeg library not found! Use --with-libjpeg=builtin to use built-in version])
+            else
+                AC_MSG_WARN([system jpeg library not found, will compile built-in version instead])
+                wxUSE_LIBJPEG=builtin
+            fi
+        else
+            dnl we are using the system library
+            wxUSE_LIBJPEG=sys
+        fi
+    fi
+
+    if test "$wxUSE_LIBJPEG" = "builtin" ; then
+        JPEG_INCLUDE="-I\${top_srcdir}/src/jpeg"
+    fi
+fi
+
+dnl ------------------------------------------------------------------------
+dnl Check for tiff library
+dnl ------------------------------------------------------------------------
+
+TIFF_INCLUDE=
+TIFF_LINK=
+if test "$wxUSE_LIBTIFF" != "no" ; then
+    AC_DEFINE(wxUSE_LIBTIFF)
+
+    if test "$wxUSE_LIBTIFF" = "sys" -o "$wxUSE_LIBTIFF" = "yes" ; then
+        AC_CHECK_HEADER(tiffio.h,
+                        AC_CHECK_LIB(tiff, TIFFError,
+                                     TIFF_LINK="-ltiff",
+                                     ,
+                                     -lm)
+                       )
+
+        if test "x$TIFF_LINK" = "x" ; then
+            if test "$wxUSE_LIBTIFF" = "sys" ; then
+                AC_MSG_ERROR([system tiff library not found! Use --with-libtiff=builtin to use built-in version])
+            else
+                AC_MSG_WARN([system tiff library not found, will compile built-in version instead])
+                wxUSE_LIBTIFF=builtin
+            fi
+        else
+            dnl we are using the system library
+            wxUSE_LIBTIFF=sys
+        fi
+    fi
+
+    if test "$wxUSE_LIBTIFF" = "builtin" ; then
+        TIFF_INCLUDE="-I\${top_srcdir}/src/tiff"
+    fi
+fi
+
+dnl ------------------------------------------------------------------------
+dnl Check for freetype library
+dnl ------------------------------------------------------------------------
+
+FREETYPE_INCLUDE=
+FREETYPE_LINK=
+if test "$wxUSE_FREETYPE" != "no" ; then
+    AC_DEFINE(wxUSE_FREETYPE)
+
+    if test "$wxUSE_FREETYPE" = "sys" -o "$wxUSE_FREETYPE" = "yes" ; then
+        AC_CHECK_HEADER(freetype.h,
+                        AC_CHECK_LIB(freetype, FT_Render_Glyph,
+                                     FREETYPE_LINK="-lfreetype",
+                                     ,
+                                     [-lm])
+                       )
+
+        if test "x$FREETYPE_LINK" = "x" ; then
+            if test "$wxUSE_FREETYPE" = "sys" ; then
+                AC_MSG_ERROR([system freetype library not found! Use --with-freetype=builtin to use built-in version])
+            else
+                AC_MSG_WARN([system freetype library not found, will compile built-in version instead])
+                wxUSE_FREETYPE=builtin
+            fi
+        else
+            dnl we are using the system library
+            wxUSE_FREETYPE=sys
+        fi
+    fi
+
+    if test "$wxUSE_FREETYPE" = "builtin" ; then
+        FREETYPE_INCLUDE="-I\${top_srcdir}/src/freetype"
+    fi
 fi
 
 dnl ----------------------------------------------------------------
@@ -2007,16 +2233,16 @@ equivalent variable and GTK+ is version 1.2.3 or above.
     if test "$TOOLKIT" != "MSW" -a "$wxUSE_ODBC" = "yes" ; then
         ALL_OBJECTS="${ALL_OBJECTS} \$(IODBCOBJS)"
     fi
-    if test "$wxUSE_LIBJPEG" = "yes" ; then
+    if test "$wxUSE_LIBJPEG" = "builtin" ; then
         ALL_OBJECTS="${ALL_OBJECTS} \$(JPEGOBJS)"
     fi
-    if test "$wxUSE_LIBTIFF" = "yes" ; then
+    if test "$wxUSE_LIBTIFF" = "builtin" ; then
         ALL_OBJECTS="${ALL_OBJECTS} \$(TIFFOBJS)"
     fi
-    if test "$wxUSE_LIBPNG" = "yes" ; then
+    if test "$wxUSE_LIBPNG" = "builtin" ; then
         ALL_OBJECTS="${ALL_OBJECTS} \$(PNGOBJS)"
     fi
-    if test "$wxUSE_FREETYPE" = "yes" ; then
+    if test "$wxUSE_FREETYPE" = "builtin" ; then
         ALL_OBJECTS="${ALL_OBJECTS} \$(FREETYPEOBJS)"
     fi
 
@@ -2055,15 +2281,19 @@ else
     DISTDIR="wxBase"
 fi
 
-dnl REGEX_INCLUDE is only set if we want regex support and if we use our
+dnl ---------------------------------------------------------------------------
-dnl own sources and not the system library
+dnl Optional libraries included when system library is not used
-if test "x$REGEX_INCLUDE" != "x" ; then
+dnl ---------------------------------------------------------------------------
+if test "$wxUSE_REGEX" = "builtin" ; then
     ALL_OBJECTS="${ALL_OBJECTS} \$(REGEXOBJS)"
 fi
-if test "$wxUSE_ZLIB" = "yes" ; then
+if test "$wxUSE_ZLIB" = "builtin" ; then
     ALL_OBJECTS="${ALL_OBJECTS} \$(ZLIBOBJS)"
 fi
 
+dnl ---------------------------------------------------------------------------
+dnl OpenGL libraries
+dnl ---------------------------------------------------------------------------
 if test "$wxUSE_OPENGL" = "yes"; then
   if test "$wxUSE_MAC" = 1; then
     AC_DEFINE(wxUSE_OPENGL)
@@ -3216,124 +3446,6 @@ if test "$WXWIN_COMPATIBILITY_2_2" = "yes"; then
     AC_DEFINE(WXWIN_COMPATIBILITY_2_2)
 fi
 
-dnl ---------------------------------------------------------------------------
-dnl Optional libraries
-dnl ---------------------------------------------------------------------------
-
-ZLIB_INCLUDE=
-if test "$wxUSE_ZLIB" = "yes" -o "$wxUSE_ZLIB" = "sys" ; then
-  AC_DEFINE(wxUSE_ZLIB)
-  if test "$wxUSE_ZLIB" = "yes" ; then
-    ZLIB_INCLUDE="-I\${top_srcdir}/src/zlib"
-  else
-    ZLIB_LINK=
-    AC_CHECK_HEADER(zlib.h, AC_CHECK_LIB(z, deflate, ZLIB_LINK="-lz"))
-    if test "x$ZLIB_LINK" = "x" ; then
-        AC_MSG_ERROR(system zlib compression library not found! Use --with-zlib=yes to use built-in zlib)
-    fi
-  fi
-fi
-
-PNG_INCLUDE=
-if test "$wxUSE_LIBPNG" = "yes" -o "$wxUSE_LIBPNG" = "sys" ; then
-  AC_DEFINE(wxUSE_LIBPNG)
-  dnl for the check below to have a chance to succeed, we must already have
-  dnl libz somewhere
-  if test "$wxUSE_LIBPNG" = "sys" -a "$wxUSE_ZLIB" != "sys" ; then
-    AC_MSG_WARN([--with-libpng=sys doesn't work without --with-zlib=sys, will compile the built-in libpng instead])
-    wxUSE_LIBPNG=yes
-  fi
-
-  if test "$wxUSE_LIBPNG" = "yes" ; then
-    PNG_INCLUDE="-I\${top_srcdir}/src/png"
-  else
-    PNG_LINK=
-    AC_CHECK_HEADER(png.h,
-                    AC_CHECK_LIB(png, png_check_sig,
-                                 PNG_LINK="-lpng",
-                                 ,
-                                 [-lz -lm])
-                   )
-    if test "x$PNG_LINK" = "x" ; then
-        AC_MSG_ERROR(system png library not found! Use --with-libpng=yes to use the built-in libpng)
-    fi
-  fi
-
-  SAMPLES_SUBDIRS="$SAMPLES_SUBDIRS png"
-fi
-
-JPEG_INCLUDE=
-if test "$wxUSE_LIBJPEG" = "yes" -o "$wxUSE_LIBJPEG" = "sys" ; then
-  AC_DEFINE(wxUSE_LIBJPEG)
-  if test "$wxUSE_LIBJPEG" = "yes" ; then
-    JPEG_INCLUDE="-I\${top_srcdir}/src/jpeg"
-  else
-    JPEG_LINK=
-    dnl can't use AC_CHECK_HEADER as jconfig.h defines things like
-    dnl HAVE_STDLIB_H which are already defined and this provokes
-    dnl a compiler warning which configure considers as an error...
-    AC_MSG_CHECKING(for jpeglib.h)
-    AC_CACHE_VAL(ac_cv_header_jpeglib_h,
-        AC_TRY_COMPILE(
-            [
-                #undef HAVE_STDLIB_H
-                #include <stdio.h>
-                #include <jpeglib.h>
-            ],
-            [
-            ],
-            ac_cv_header_jpeglib_h=yes,
-            ac_cv_header_jpeglib_h=no
-        )
-    )
-    AC_MSG_RESULT($ac_cv_header_jpeglib_h)
-
-    if test "$ac_cv_header_jpeglib_h" = "yes"; then
-        AC_CHECK_LIB(jpeg, jpeg_read_header, JPEG_LINK="-ljpeg")
-    fi
-
-    if test "x$JPEG_LINK" = "x" ; then
-        AC_MSG_ERROR(system jpeg library not found! Use --with-libjpeg=yes to use the built-in one)
-    fi
-  fi
-fi
-
-TIFF_INCLUDE=
-if test "$wxUSE_LIBTIFF" = "yes" -o "$wxUSE_LIBTIFF" = "sys" ; then
-  AC_DEFINE(wxUSE_LIBTIFF)
-  if test "$wxUSE_LIBTIFF" = "yes" ; then
-    TIFF_INCLUDE="-I\${top_srcdir}/src/tiff"
-  else
-    TIFF_LINK=
-    AC_CHECK_HEADER(tiffio.h, AC_CHECK_LIB(tiff, TIFFError,
-                                           TIFF_LINK="-ltiff",
-                                           ,
-                                           -lm))
-    if test "x$TIFF_LINK" = "x" ; then
-        AC_MSG_ERROR(system tiff library not found! Use --with-libtiff=yes to use the built-in one)
-    fi
-  fi
-fi
-
-FREETYPE_INCLUDE=
-if test "$wxUSE_FREETYPE" = "yes" -o "$wxUSE_FREETYPE" = "sys" ; then
-  AC_DEFINE(wxUSE_FREETYPE)
-  if test "$wxUSE_FREETYPE" = "yes" ; then
-    FREETYPE_INCLUDE="-I\${top_srcdir}/src/freetype"
-  else
-    FREETYPE_LINK=
-    AC_CHECK_HEADER(freetype.h,
-                    AC_CHECK_LIB(freetype, FT_Render_Glyph,
-                                 FREETYPE_LINK="-lfreetype",
-                                 ,
-                                 [-lm])
-                   )
-    if test "x$FREETYPE_LINK" = "x" ; then
-        AC_MSG_ERROR(system freetype library not found! Use --with-freetype=yes to use the built-in freetype)
-    fi
-  fi
-fi
-
 dnl ---------------------------------------------------------------------------
 dnl the library may be built without GUI classes at all
 dnl ---------------------------------------------------------------------------