Merged changes from gtk-1-0. Check ChangeLog for details.

1 files changed, 104 insertions, 13 deletions

diff --git a/gtk.m4 b/gtk.m4
index b51cd6fea..463c43677 100644
--- a/gtk.m4
+++ b/gtk.m4
@@ -12,6 +12,8 @@ AC_ARG_WITH(gtk-prefix,[  --with-gtk-prefix=PFX   Prefix where GTK is installed
             gtk_config_prefix="$withval", gtk_config_prefix="")
 AC_ARG_WITH(gtk-exec-prefix,[  --with-gtk-exec-prefix=PFX Exec prefix where GTK is installed (optional)],
             gtk_config_exec_prefix="$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)
 
   if test x$gtk_config_exec_prefix != x ; then
      gtk_config_args="$gtk_config_args --exec-prefix=$gtk_config_exec_prefix"
@@ -30,18 +32,28 @@ AC_ARG_WITH(gtk-exec-prefix,[  --with-gtk-exec-prefix=PFX Exec prefix where GTK
   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
+  if test "$GTK_CONFIG" = "no" ; then
+    no_gtk=yes
+  else
     GTK_CFLAGS=`$GTK_CONFIG $gtk_config_args --cflags`
     GTK_LIBS=`$GTK_CONFIG $gtk_config_args --libs`
-    ac_save_CFLAGS="$CFLAGS"
-    ac_save_LIBS="$LIBS"
-    CFLAGS="$CFLAGS $GTK_CFLAGS"
-    LIBS="$LIBS $GTK_LIBS"
+    gtk_config_major_version=`$GTK_CONFIG $gtk_config_args --version | \
+           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\1/'`
+    gtk_config_minor_version=`$GTK_CONFIG $gtk_config_args --version | \
+           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\2/'`
+    gtk_config_micro_version=`$GTK_CONFIG $gtk_config_args --version | \
+           sed 's/\([[0-9]]*\).\([[0-9]]*\).\([[0-9]]*\)/\3/'`
+    if test "x$enable_gtktest" = "xyes" ; then
+      ac_save_CFLAGS="$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([
+      rm -f conf.gtktest
+      AC_TRY_RUN([
 #include <gtk/gtk.h>
 #include <stdio.h>
 
@@ -50,30 +62,109 @@ main ()
 {
   int major, minor, micro;
 
+  system ("touch conf.gtktest");
+
   if (sscanf("$min_gtk_version", "%d.%d.%d", &major, &minor, &micro) != 3) {
      printf("%s, bad version string\n", "$min_gtk_version");
      exit(1);
    }
 
-   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)));
+  if ((gtk_major_version != $gtk_config_major_version) ||
+      (gtk_minor_version != $gtk_config_minor_version) ||
+      (gtk_micro_version != $gtk_config_micro_version))
+    {
+      printf("\n*** 'gtk-config --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 was correct, then it is best\n");
+      printf ("*** to remove the old version of GTK+. You may also be able to fix the error\n");
+      printf("*** by modifying your LD_LIBRARY_PATH enviroment variable, or by editing\n");
+      printf("*** /etc/ld.so.conf. Make sure you have run ldconfig if that is\n");
+      printf("*** required on your system.\n");
+      printf("*** If gtk-config was wrong, set the environment variable GTK_CONFIG\n");
+      printf("*** to point to the correct copy of gtk-config, and remove the file config.cache\n");
+      printf("*** before re-running configure\n");
+    } 
+  else
+    {
+      if ((gtk_major_version > major) ||
+        ((gtk_major_version == major) && (gtk_minor_version > minor)) ||
+        ((gtk_major_version == major) && (gtk_minor_version == minor) && (gtk_micro_version >= micro)))
+      {
+        return 0;
+       }
+     else
+      {
+        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);
+        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");
+        printf("*** probably means that the wrong copy of the gtk-config shell script is\n");
+        printf("*** being found. The easiest way to fix this is to remove the old version\n");
+        printf("*** of GTK+, but you can also set the GTK_CONFIG environment to point to the\n");
+        printf("*** correct copy of gtk-config. (In this case, you will have to\n");
+        printf("*** modify your LD_LIBRARY_PATH enviroment variable, or edit /etc/ld.so.conf\n");
+        printf("*** so that the correct libraries are found at run-time))\n");
+      }
+    }
+  return 1;
 }
 ],, no_gtk=yes,[echo $ac_n "cross compiling; assumed OK... $ac_c"])
-     CFLAGS="$ac_save_CFLAGS"
-     LIBS="$ac_save_LIBS"
-  else
-     no_gtk=yes
+       CFLAGS="$ac_save_CFLAGS"
+       LIBS="$ac_save_LIBS"
+     fi
   fi
   if test "x$no_gtk" = x ; then
      AC_MSG_RESULT(yes)
      ifelse([$2], , :, [$2])     
   else
      AC_MSG_RESULT(no)
+     if test "$GTK_CONFIG" = "no" ; then
+       echo "*** The gtk-config script installed by GTK could not be found"
+       echo "*** If GTK was installed in PREFIX, make sure PREFIX/bin is in"
+       echo "*** your path, or set the GTK_CONFIG environment variable to the"
+       echo "*** full path to gtk-config."
+     else
+       if test -f conf.gtktest ; then
+        :
+       else
+          echo "*** Could not run GTK test program, checking why..."
+          CFLAGS="$CFLAGS $GTK_CFLAGS"
+          LIBS="$LIBS $GTK_LIBS"
+          AC_TRY_LINK([
+#include <gtk/gtk.h>
+#include <stdio.h>
+],      [ return ((gtk_major_version) || (gtk_minor_version) || (gtk_micro_version)); ],
+        [ echo "*** The test program compiled, but did not run. This usually means"
+          echo "*** that the run-time linker is not finding GTK or finding the wrong"
+          echo "*** version of GTK. If it is not finding GTK, you'll need to set your"
+          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 "*** 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 "***"
+          echo "*** If you have a RedHat 5.0 system, you should remove the GTK package that"
+          echo "*** came with the system with the command"
+          echo "***"
+          echo "***    rpm --erase --nodeps gtk gtk-devel" ],
+        [ echo "*** The test program failed to compile or link. See the file config.log for the"
+          echo "*** exact error that occured. This usually means GTK was incorrectly installed"
+          echo "*** or that you have moved GTK since it was installed. In the latter case, you"
+          echo "*** may want to edit the gtk-config script: $GTK_CONFIG" ])
+          CFLAGS="$ac_save_CFLAGS"
+          LIBS="$ac_save_LIBS"
+       fi
+     fi
      GTK_CFLAGS=""
      GTK_LIBS=""
      ifelse([$3], , :, [$3])
   fi
   AC_SUBST(GTK_CFLAGS)
   AC_SUBST(GTK_LIBS)
+  rm -f conf.gtktest
 ])