Index: mozilla/layout/build/Makefile.in
===================================================================
RCS file: /cvsroot/mozilla/layout/build/Makefile.in,v
retrieving revision 1.127.8.7
diff -d -u -p -r1.127.8.7 Makefile.in
--- mozilla/layout/build/Makefile.in	17 Jul 2006 19:05:13 -0000	1.127.8.7
+++ mozilla/layout/build/Makefile.in	10 Oct 2006 04:29:16 -0000
@@ -240,6 +240,11 @@ EXTRA_DSO_LDOPTS += \
 	$(NULL)
 endif
 
+# Add explicit X11 dependency when building against X11 toolkits
+ifneq (,$(filter gtk gtk2 qt xlib,$(MOZ_WIDGET_TOOLKIT)))
+EXTRA_DSO_LDOPTS += $(XLDFLAGS) $(XLIBS) -lXrender
+endif
+
 include $(topsrcdir)/config/rules.mk
 
 LOCAL_INCLUDES	+= -I$(srcdir)/../base \