diff -up devhelp-2.90.5/acinclude.m4.gtk3 devhelp-2.90.5/acinclude.m4
--- devhelp-2.90.5/acinclude.m4.gtk3	2010-07-14 16:30:22.970956005 -0400
+++ devhelp-2.90.5/acinclude.m4	2010-07-14 16:30:37.941955999 -0400
@@ -1,5 +1,5 @@
 AC_DEFUN([IGE_PLATFORM_CHECK],[
-    gdk_target=`$PKG_CONFIG --variable=target gtk+-2.0`
+    gdk_target=`$PKG_CONFIG --variable=target gtk+-3.0`
 
     if test "x$gdk_target" = "xquartz"; then
         AC_MSG_CHECKING([checking for Mac OS X support])