[mutter] Allow building with Gtk+-3.0

[Florian Müllner <fmuellner src gnome org>]

commit 01447d94d13a343aa72b358a72f57ff8b2cb9178
Author: Florian Müllner <fmuellner gnome org>
Date:   Sat Jun 19 18:39:48 2010 +0200

    Allow building with Gtk+-3.0
    
    Add a configure switch to select the Gtk+ version to build with. The
    default is to build against Gtk+-2.0 >= 2.18.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=622303

 configure.in    |   35 +++++++++++++++++++++++++++++------
 src/Makefile.am |    6 +++---
 2 files changed, 32 insertions(+), 9 deletions(-)
---
diff --git a/configure.in b/configure.in
index eff4b35..860ffbe 100644
--- a/configure.in
+++ b/configure.in
@@ -124,7 +124,30 @@ if test "x$GCC" = "xyes"; then
 fi
 changequote([,])dnl
 
-MUTTER_PC_MODULES='gtk+-2.0 >= 2.18 pango >= 1.2.0'
+AC_MSG_CHECKING([which gtk+ version to compile against])
+AC_ARG_WITH([gtk],
+  AC_HELP_STRING([--with-gtk=2.0|3.0],
+                 [which gtk+ version to compile against (default: 2)]),
+  [case "$with_gtk" in
+      2.0|3.0) ;;
+      *) AC_MSG_ERROR([invalid gtk+ version specified]);;
+  esac],
+  [with_gtk=2.0])
+AC_MSG_RESULT([$with_gtk])
+
+case "$with_gtk" in
+  2.0) GTK_API_VERSION=2.0
+       GTK_MIN_VERSION=2.18
+       CANBERRA_GTK=libcanberra-gtk
+       ;;
+  3.0) GTK_API_VERSION=3.0
+       GTK_MIN_VERSION=2.90
+       CANBERRA_GTK=libcanberra-gtk3
+       ;;
+esac
+
+MUTTER_PC_MODULES="gtk+-$GTK_API_VERSION >= $GTK_MIN_VERSION pango >= 1.2.0"
+AC_SUBST(GTK_API_VERSION)
 
 AC_ARG_ENABLE(gconf,
   AC_HELP_STRING([--disable-gconf],
@@ -184,8 +207,8 @@ AM_GLIB_GNU_GETTEXT
 # GRegex requires Glib-2.14.0
 PKG_CHECK_MODULES(ALL, glib-2.0 >= 2.14.0)
 # gtk_window_set_icon_name requires gtk2+-2.6.0
-PKG_CHECK_MODULES(MUTTER_MESSAGE, gtk+-2.0 >= 2.18)
-PKG_CHECK_MODULES(MUTTER_WINDOW_DEMO, gtk+-2.0 >= 2.18)
+PKG_CHECK_MODULES(MUTTER_MESSAGE, gtk+-$GTK_API_VERSION >= $GTK_MIN_VERSION)
+PKG_CHECK_MODULES(MUTTER_WINDOW_DEMO, gtk+-$GTK_API_VERSION >= $GTK_MIN_VERSION)
 
 # Unconditionally use this dir to avoid a circular dep with gnomecc
 GNOME_KEYBINDINGS_KEYSDIR="${datadir}/gnome-control-center/keybindings"
@@ -222,10 +245,10 @@ AC_MSG_CHECKING([libcanberra-gtk])
 if test x$with_libcanberra = xno ; then
   AC_MSG_RESULT([disabled])
 else
-  if $PKG_CONFIG --exists libcanberra-gtk; then
+  if $PKG_CONFIG --exists $CANBERRA_GTK; then
     have_libcanberra=yes
     AC_MSG_RESULT(yes)
-    MUTTER_PC_MODULES="$MUTTER_PC_MODULES libcanberra-gtk"
+    MUTTER_PC_MODULES="$MUTTER_PC_MODULES $CANBERRA_GTK"
     AC_DEFINE([HAVE_LIBCANBERRA], 1, [Building with libcanberra for playing sounds])
   else
     AC_MSG_RESULT(no)
@@ -545,7 +568,7 @@ fi
 
 dnl ==========================================================================
 echo "
-mutter-$VERSION:
+mutter-$VERSION (using gtk+-${GTK_API_VERSION}):
 
 	prefix:                   ${prefix}
 	source code location:	  ${srcdir}
diff --git a/src/Makefile.am b/src/Makefile.am
index 1753d4a..f9a29c9 100644
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -211,11 +211,11 @@ Meta-$(api_version).gir: $(G_IR_SCANNER) mutter $(libmutterinclude_HEADERS) $(mu
 		--namespace=Meta			\
 		--nsversion=$(api_version)		\
 		--include=GObject-2.0			\
-		--include=Gdk-2.0			\
-		--include=Gtk-2.0			\
+		--include=Gdk- GTK_API_VERSION@		\
+		--include=Gtk- GTK_API_VERSION@		\
 		--include=Clutter-1.0			\
 		--pkg=clutter-1.0			\
-		--pkg=gtk+-2.0				\
+		--pkg=gtk+- GTK_API_VERSION@		\
 		--include=xlib-2.0			\
 		--include=xfixes-4.0			\
 		--program=$$pwd/mutter			\