[gtkglext] Add check for pangowin32.

[Ralf Corsépius <rcorsepius src gnome org>]

commit fb75259c6df3cb5689e4b306a67e8dc646ced658
Author: Ralf Corsepius <rcorsepius src gnome org>
Date:   Tue Dec 29 09:19:35 2009 +0100

    Add check for pangowin32.

 configure.ac |   15 ++++++++++++---
 1 files changed, 12 insertions(+), 3 deletions(-)
---
diff --git a/configure.ac b/configure.ac
index 7a7f727..70ae862 100644
--- a/configure.ac
+++ b/configure.ac
@@ -226,9 +226,18 @@ PKG_CHECK_MODULES([GTK], [gtk+-2.0 >= 2.4], ,
 PKG_CHECK_MODULES([GDK], [gdk-2.0], ,
                   [AS_IF([test -z "${GDK_LIBS+x}"],
                          [AC_MSG_FAILURE([GDK is required.])])])
-PKG_CHECK_MODULES([PANGOX], [pangox], ,
-                  [AS_IF([test -z "${PANGOX_LIBS+x}"],
-                         [AC_MSG_FAILURE([Pango X font support is required.])])])
+
+case $gdktarget in
+x11)
+  PKG_CHECK_MODULES([PANGOX],[pango$gdktarget], ,
+                  [AC_MSG_FAILURE([pango$gdtarget font support is required.])])
+  ;;
+win32)
+  PKG_CHECK_MODULES([PANGOWIN32],[pango$gdktarget], ,
+                      [AC_MSG_FAILURE([pango$gdtarget font support is required.])])
+  ;;
+esac
+
 PKG_CHECK_MODULES([PANGOFT2], [pangoft2], ,
                   [AS_IF([test -z "${PANGOFT2_LIBS+x}"],
                          [AC_MSG_WARN([Pango Freetype support is required to build some of the examples.])])])