1. added --enable-gtk2 option, check for GTK+ 2.0 disabled by default

2. added caching of gtk-config checks


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@10753 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

aclocal.m4

@@ -1,11 +1,104 @@
+dnl aclocal.m4 generated automatically by aclocal 1.4
+
+dnl Copyright (C) 1994, 1995-8, 1999 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl This program is distributed in the hope that it will be useful,
+dnl but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+dnl even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+dnl PARTICULAR PURPOSE.
+
 # Configure paths for GTK+
 # Owen Taylor     97-11-3
 
+dnl AM_PATH_GTK([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
+dnl Test for GTK, and define GTK_CFLAGS and GTK_LIBS. Uses variables
+dnl gtk_config_prefix and/or gtk_config_exec_prefix if defined.
+AC_DEFUN(AM_PATH_GTK,
+[
+  if test x$gtk_config_exec_prefix != x ; then
+     gtk_config_args="$gtk_config_args --exec-prefix=$gtk_config_exec_prefix"
+     if test x${GTK_CONFIG+set} != xset ; then
+        GTK_CONFIG=$gtk_config_exec_prefix/bin/gtk-config
+     fi
+  fi
+  if test x$gtk_config_prefix != x ; then
+     gtk_config_args="$gtk_config_args --prefix=$gtk_config_prefix"
+     if test x${GTK_CONFIG+set} != xset ; then
+        GTK_CONFIG=$gtk_config_prefix/bin/gtk-config
+     fi
+  fi
+
+  AC_PATH_PROG(GTK_CONFIG, gtk-config, no)
+  min_gtk_version=ifelse([$1], ,0.99.7,$1)
+  AC_MSG_CHECKING(for GTK - version >= $min_gtk_version)
+  no_gtk=""
+  if test "$GTK_CONFIG" != "no" ; then
+    GTK_CFLAGS=`$GTK_CONFIG --cflags`
+    GTK_LIBS=`$GTK_CONFIG --libs gthread`
+    ac_save_CFLAGS="$CFLAGS"
+    ac_save_LIBS="$LIBS"
+    CFLAGS="$CFLAGS $GTK_CFLAGS"
+    LIBS="$LIBS $GTK_LIBS"
+dnl
+dnl Now check if the installed GTK is sufficiently new. (Also sanity
+dnl checks the results of gtk-config to some extent)
+dnl
+    AC_TRY_RUN([
+#include <gtk/gtk.h>
+#include <gtk/gtkfeatures.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+int
+main ()
+{
+  int major, minor, micro;
+
+  if (sscanf("$min_gtk_version", "%d.%d.%d", &major, &minor, &micro) != 3) {
+     printf("%s, bad version string\n", "$min_gtk_version");
+     exit(1);
+   }
+
+   if ((GTK_MAJOR_VERSION != gtk_major_version) ||
+       (GTK_MINOR_VERSION != gtk_minor_version) ||
+       (GTK_MICRO_VERSION != gtk_micro_version)) {
+     printf("Headers vs. library version mismatch!\n");
+     exit(1);
+   }
+
+   if (gtk_minor_version == 1) return FALSE;
+
+   return !((gtk_major_version > major) ||
+    ((gtk_major_version == major) && (gtk_minor_version > minor)) ||
+    ((gtk_major_version == major) && (gtk_minor_version == minor) && (gtk_micro_version >= micro)));
+}
+],, no_gtk=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
+     CFLAGS="$ac_save_CFLAGS"
+     LIBS="$ac_save_LIBS"
+  else
+     no_gtk=yes
+  fi
+  if test "x$no_gtk" = x ; then
+     AC_MSG_RESULT(yes)
+     ifelse([$2], , :, [$2])
+  else
+     AC_MSG_RESULT(no)
+     GTK_CFLAGS=""
+     GTK_LIBS=""
+     ifelse([$3], , :, [$3])
+  fi
+  AC_SUBST(GTK_CFLAGS)
+  AC_SUBST(GTK_LIBS)
+])
+
 dnl AM_PATH_GTK_2_0([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND [, MODULES]]]])
 dnl Test for GTK, and define GTK_CFLAGS and GTK_LIBS
 dnl
 AC_DEFUN(AM_PATH_GTK_2_0,
-[dnl 
+[dnl
 dnl Get the cflags and libraries from the gtk-config-2.0 script
 dnl
 AC_ARG_WITH(gtk-prefix,[  --with-gtk-prefix=PFX   Prefix where GTK is installed (optional)],
@@ -13,12 +106,12 @@ AC_ARG_WITH(gtk-prefix,[  --with-gtk-prefix=PFX   Prefix where GTK is installed
 AC_ARG_WITH(gtk-exec-prefix,[  --with-gtk-exec-prefix=PFX Exec prefix where GTK is installed (optional)],
             gtk_config_exec_prefix="$withval", gtk_config_exec_prefix="")
 AC_ARG_ENABLE(gtktest, [  --disable-gtktest       Do not try to compile and run a test GTK program],
-		    , enable_gtktest=yes)
+                    , enable_gtktest=yes)
 
   for module in . $4
   do
       case "$module" in
-         gthread) 
+         gthread)
              gtk_config_args="$gtk_config_args gthread"
          ;;
       esac
@@ -67,7 +160,7 @@ dnl
 #include <stdio.h>
 #include <stdlib.h>
 
-int 
+int
 main ()
 {
   int major, minor, micro;
@@ -86,7 +179,7 @@ main ()
       (gtk_minor_version != $gtk_config_minor_version) ||
       (gtk_micro_version != $gtk_config_micro_version))
     {
-      printf("\n*** 'gtk-config-2.0 --version' returned %d.%d.%d, but GTK+ (%d.%d.%d)\n", 
+      printf("\n*** 'gtk-config-2.0 --version' returned %d.%d.%d, but GTK+ (%d.%d.%d)\n",
              $gtk_config_major_version, $gtk_config_minor_version, $gtk_config_micro_version,
              gtk_major_version, gtk_minor_version, gtk_micro_version);
       printf ("*** was found! If gtk-config-2.0 was correct, then it is best\n");
@@ -97,16 +190,16 @@ main ()
       printf("*** If gtk-config-2.0 was wrong, set the environment variable GTK_CONFIG_2_0\n");
       printf("*** to point to the correct copy of gtk-config-2.0, and remove the file config.cache\n");
       printf("*** before re-running configure\n");
-    } 
+    }
 #if defined (GTK_MAJOR_VERSION) && defined (GTK_MINOR_VERSION) && defined (GTK_MICRO_VERSION)
   else if ((gtk_major_version != GTK_MAJOR_VERSION) ||
-	   (gtk_minor_version != GTK_MINOR_VERSION) ||
+           (gtk_minor_version != GTK_MINOR_VERSION) ||
            (gtk_micro_version != GTK_MICRO_VERSION))
     {
       printf("*** GTK+ header files (version %d.%d.%d) do not match\n",
-	     GTK_MAJOR_VERSION, GTK_MINOR_VERSION, GTK_MICRO_VERSION);
+             GTK_MAJOR_VERSION, GTK_MINOR_VERSION, GTK_MICRO_VERSION);
       printf("*** library (version %d.%d.%d)\n",
-	     gtk_major_version, gtk_minor_version, gtk_micro_version);
+             gtk_major_version, gtk_minor_version, gtk_micro_version);
     }
 #endif /* defined (GTK_MAJOR_VERSION) ... */
   else
@@ -122,7 +215,7 @@ main ()
         printf("\n*** An old version of GTK+ (%d.%d.%d) was found.\n",
                gtk_major_version, gtk_minor_version, gtk_micro_version);
         printf("*** You need a version of GTK+ newer than %d.%d.%d. The latest version of\n",
-	       major, minor, micro);
+               major, minor, micro);
         printf("*** GTK+ is always available from ftp://ftp.gtk.org.\n");
         printf("***\n");
         printf("*** If you have already installed a sufficiently new version, this error\n");
@@ -143,7 +236,7 @@ main ()
   fi
   if test "x$no_gtk" = x ; then
      AC_MSG_RESULT(yes (version $gtk_config_major_version.$gtk_config_minor_version.$gtk_config_micro_version))
-     ifelse([$2], , :, [$2])     
+     ifelse([$2], , :, [$2])
   else
      AC_MSG_RESULT(no)
      if test "$GTK_CONFIG_2_0" = "no" ; then
@@ -168,7 +261,7 @@ main ()
           echo "*** LD_LIBRARY_PATH environment variable, or edit /etc/ld.so.conf to point"
           echo "*** to the installed location  Also, make sure you have run ldconfig if that"
           echo "*** is required on your system"
-	  echo "***"
+          echo "***"
           echo "*** If you have an old version installed, it is best to remove it, although"
           echo "*** you may also be able to get things to work by modifying LD_LIBRARY_PATH"
           echo "***"
@@ -192,3 +285,5 @@ main ()
   AC_SUBST(GTK_LIBS)
   rm -f conf.gtktest
 ])
+
+

configure.in

@@ -11,90 +11,6 @@ dnl
 dnl Version: $Id$
 dnl ---------------------------------------------------------------------------
 
-dnl ---------------------------------------------------------------------------
-dnl AM_PATH_GTK([MINIMUM-VERSION, [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND]]])
-dnl Test for GTK, and define GTK_CFLAGS and GTK_LIBS. Uses variables
-dnl gtk_config_prefix and/or gtk_config_exec_prefix if defined.
-dnl ---------------------------------------------------------------------------
-dnl
-AC_DEFUN(AM_PATH_GTK,
-[
-  if test x$gtk_config_exec_prefix != x ; then
-     gtk_config_args="$gtk_config_args --exec-prefix=$gtk_config_exec_prefix"
-     if test x${GTK_CONFIG+set} != xset ; then
-        GTK_CONFIG=$gtk_config_exec_prefix/bin/gtk-config
-     fi
-  fi
-  if test x$gtk_config_prefix != x ; then
-     gtk_config_args="$gtk_config_args --prefix=$gtk_config_prefix"
-     if test x${GTK_CONFIG+set} != xset ; then
-        GTK_CONFIG=$gtk_config_prefix/bin/gtk-config
-     fi
-  fi
-
-  AC_PATH_PROG(GTK_CONFIG, gtk-config, no)
-  min_gtk_version=ifelse([$1], ,0.99.7,$1)
-  AC_MSG_CHECKING(for GTK - version >= $min_gtk_version)
-  no_gtk=""
-  if test "$GTK_CONFIG" != "no" ; then
-    GTK_CFLAGS=`$GTK_CONFIG --cflags`
-    GTK_LIBS=`$GTK_CONFIG --libs gthread`
-    ac_save_CFLAGS="$CFLAGS"
-    ac_save_LIBS="$LIBS"
-    CFLAGS="$CFLAGS $GTK_CFLAGS"
-    LIBS="$LIBS $GTK_LIBS"
-dnl
-dnl Now check if the installed GTK is sufficiently new. (Also sanity
-dnl checks the results of gtk-config to some extent)
-dnl
-    AC_TRY_RUN([
-#include <gtk/gtk.h>
-#include <gtk/gtkfeatures.h>
-#include <stdio.h>
-#include <stdlib.h>
-
-int
-main ()
-{
-  int major, minor, micro;
-
-  if (sscanf("$min_gtk_version", "%d.%d.%d", &major, &minor, &micro) != 3) {
-     printf("%s, bad version string\n", "$min_gtk_version");
-     exit(1);
-   }
-
-   if ((GTK_MAJOR_VERSION != gtk_major_version) ||
-       (GTK_MINOR_VERSION != gtk_minor_version) ||
-       (GTK_MICRO_VERSION != gtk_micro_version)) {
-     printf("Headers vs. library version mismatch!\n");
-     exit(1);
-   }
-
-   if (gtk_minor_version == 1) return FALSE;
-
-   return !((gtk_major_version > major) ||
-    ((gtk_major_version == major) && (gtk_minor_version > minor)) ||
-    ((gtk_major_version == major) && (gtk_minor_version == minor) && (gtk_micro_version >= micro)));
-}
-],, no_gtk=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
-     CFLAGS="$ac_save_CFLAGS"
-     LIBS="$ac_save_LIBS"
-  else
-     no_gtk=yes
-  fi
-  if test "x$no_gtk" = x ; then
-     AC_MSG_RESULT(yes)
-     ifelse([$2], , :, [$2])
-  else
-     AC_MSG_RESULT(no)
-     GTK_CFLAGS=""
-     GTK_LIBS=""
-     ifelse([$3], , :, [$3])
-  fi
-  AC_SUBST(GTK_CFLAGS)
-  AC_SUBST(GTK_LIBS)
-])
-
 dnl ===========================================================================
 dnl macros to find the a file in the list of include/lib paths
 dnl ===========================================================================
@@ -295,7 +211,7 @@ AC_DEFUN(WX_ARG_SYS_WITH,
         [
           AC_MSG_CHECKING([for --with-$1])
           no_cache=0
-          AC_ARG_WITH($1, $2,
+          AC_ARG_WITH($1, [$2],
                       [
                         if test "$withval" = yes; then
                           ac_cv_use_$1='$3=yes'
@@ -340,7 +256,7 @@ AC_DEFUN(WX_ARG_WITH,
         [
           AC_MSG_CHECKING([for --with-$1])
           no_cache=0
-          AC_ARG_WITH($1, $2,
+          AC_ARG_WITH($1, [$2],
                       [
                         if test "$withval" = yes; then
                           ac_cv_use_$1='$3=yes'
@@ -377,7 +293,7 @@ AC_DEFUN(WX_ARG_ENABLE,
         [
           AC_MSG_CHECKING([for --enable-$1])
           no_cache=0
-          AC_ARG_ENABLE($1, $2,
+          AC_ARG_ENABLE($1, [$2],
                         [
                           if test "$enableval" = yes; then
                             ac_cv_use_$1='$3=yes'
@@ -408,32 +324,6 @@ AC_DEFUN(WX_ARG_ENABLE,
           fi
         ])
 
-dnl -
-dnl - GNU libc extension (added by GL)
-dnl -
-
-AC_DEFUN(WX_GNU_EXTENSIONS,
-[
-AC_MSG_CHECKING([if you need GNU extensions])
-AC_CACHE_VAL(wx_cv_gnu_extensions,[
-   AC_TRY_COMPILE([#include <features.h>],[
-
-#ifndef __GNU_LIBRARY__
- Compile error wanted
-#endif
-
-],
-  [wx_cv_gnu_extensions=yes],
-  [wx_cv_gnu_extensions=no])
-])
-
-AC_MSG_RESULT($wx_cv_gnu_extensions)
-if test "$wx_cv_gnu_extensions" = "yes"; then
-  AC_DEFINE_UNQUOTED(_GNU_SOURCE)
-fi
-])
-
-
 dnl ---------------------------------------------------------------------------
 dnl initialization
 dnl ---------------------------------------------------------------------------
@@ -1054,10 +944,7 @@ AC_ARG_WITH(mingw,         [  --with-mingw            use GCC Minimal MS-Windows
 AC_ARG_WITH(pm,            [  --with-pm               use OS/2 Presentation Manager], [wxUSE_PM="$withval" CACHE_PM=1 TOOLKIT_GIVEN=1])
 AC_ARG_WITH(mgl,           [  --with-mgl              use MGL], [wxUSE_MGL="$withval" CACHE_MGL=1 TOOLKIT_GIVEN=1])
 
-AC_ARG_WITH(gtk-prefix,    [  --with-gtk-prefix=PFX   Prefix where GTK is installed],
+AC_ARG_ENABLE(gtk2,        [  --enable-gtk2           use GTK+ 2.0 if available (EXPERIMENTAL)],wxUSE_GTK2=1,wxUSE_GTK2=0)
-            gtk_config_prefix="$withval", gtk_config_prefix="")
-AC_ARG_WITH(gtk-exec-prefix, [  --with-gtk-exec-prefix=PFX  Exec prefix where GTK is installed],
-            gtk_config_exec_prefix="$withval", gtk_config_exec_prefix="")
 
 WX_ARG_SYS_WITH(libpng,    [  --with-libpng           use libpng (PNG image format)], wxUSE_LIBPNG)
 WX_ARG_SYS_WITH(libjpeg,   [  --with-libjpeg          use libjpeg (JPEG file format)], wxUSE_LIBJPEG)
@@ -1715,38 +1602,61 @@ if test "$wxUSE_GUI" = "yes"; then
     fi
 
     if test "$wxUSE_GTK" = 1; then
-        dnl avoid calling AM_PATH_GTK twice, so check first for the newer version
+        AC_MSG_CHECKING([for GTK+ version])
-        dnl and only then, if it wasn't found, for an older one
-        AM_PATH_GTK_2_0(1.3.1, WXGTK20=1,[
-          AM_PATH_GTK(1.2.7, WXGTK127=1)
-          AM_PATH_GTK(1.2.3, WXGTK12=1)
-        ], gthread)
 
-        if test "$WXGTK12" != 1 -a "$WXGTK20" != 1; then
+        gtk_version_cached=1
-            AC_MSG_ERROR([
+        AC_CACHE_VAL(wx_cv_lib_gtk,
-                Please check that gtk-config is in path, the directory
+            [
-                where GTK+ libraries are installed (returned by
+                dnl stupid GTK+ AM macros produce their own messages, so we
-                'gtk-config --libs' command) is in LD_LIBRARY_PATH or
+                dnl have to pass to the next line
-                equivalent variable and GTK+ is version 1.2.3 or above.
+                gtk_version_cached=0
-            ])
+                AC_MSG_RESULT("")
+
+                wx_cv_lib_gtk=
+                if test "x$wxUSE_GTK2" = "xyes"; then
+                    AM_PATH_GTK_2_0(1.3.1, wx_cv_lib_gtk=2.0, gthread)
+                fi
+
+                if test -z "$wx_cv_lib_gtk"; then
+                    AM_PATH_GTK(1.2.7, wx_cv_lib_gtk=1.2.7)
+                fi
+
+                if test -z "$wx_cv_lib_gtk"; then
+                    AM_PATH_GTK(1.2.3, wx_cv_lib_gtk=1.2.3)
+                fi
+
+                if test -z "$wx_cv_lib_gtk"; then
+                    dnl looks better in AC_MSG_RESULT
+                    wx_cv_lib_gtk=none
+                fi
+            ]
+        )
+
+        dnl if it wasn't cached, the messages from AM_PATH_GTK() above are
+        dnl enough
+        if test "$gtk_version_cached" = 1; then
+            AC_MSG_RESULT($wx_cv_lib_gtk)
         fi
 
+        case "$wx_cv_lib_gtk" in
+            2.0)    WXGTK20=1
+                    ;;
+            1.2.7)  WXGTK127=1
+                    ;;
+            1.2.3)  WXGTK12=1
+                    ;;
+            *)      AC_MSG_ERROR([
+Please check that gtk-config is in path, the directory
+where GTK+ libraries are installed (returned by
+'gtk-config --libs' command) is in LD_LIBRARY_PATH or
+equivalent variable and GTK+ is version 1.2.3 or above.
+                            ])
+                    ;;
+        esac
+
         TOOLKIT_INCLUDE="$GTK_CFLAGS"
-
-        dnl Appending gthreads as it was done here is not portable, instead
-        dnl we now call "gtk-config --libs gthread" which sets the right library
-        dnl name for us. The following hacks are no longer required.
-
         GUI_TK_LIBRARY="$GTK_LIBS"
 
-        dnl dnl On FreeBSD, the libs are called gtk12 etc, so we must append gthread12
-        dnl    echo $GTK_LIBS | fgrep -q "glib12"
-        dnl    if test $? = 0  ; then
-        dnl       GUI_TK_LIBRARY="$GTK_LIBS -gthread12"
-        dnl    else
-        dnl       GUI_TK_LIBRARY="$GTK_LIBS -lgthread"
-        dnl    fi
-
         AFMINSTALL=afminstall
         TOOLKIT=GTK
         GUIDIST=GTK_DIST
@@ -2593,7 +2503,6 @@ AC_CACHE_CHECK([size of wchar_t], wx_cv_sizeof_wchar_t,
 
 AC_DEFINE_UNQUOTED(SIZEOF_WCHAR_T, $wx_cv_sizeof_wchar_t)
 
-
 dnl for bytesex stuff (don't use AC_C_BIGENDIAN to allow cross-compiling)
 WX_C_BIGENDIAN
 
@@ -2603,9 +2512,6 @@ WX_CPP_NEW_HEADERS(, AC_DEFINE(wxUSE_IOSTREAMH))
 dnl check whether C++ compiler supports bool built-in type
 WX_CPP_BOOL
 
-dnl check whether we should define _GNU_SOURCE
-WX_GNU_EXTENSIONS
-
 dnl ---------------------------------------------------------------------------
 dnl Check for functions
 dnl ---------------------------------------------------------------------------