Index: tests/Makefile.am
===================================================================
--- tests/Makefile.am	(revision 694)
+++ tests/Makefile.am	(working copy)
@@ -1,8 +1,7 @@
 INCLUDES = \
 	$(PYTHON_INCLUDES) \
 	$(GLIB_CFLAGS) \
-	-I$(top_srcdir)/gobject \
-	-D_XOPEN_SOURCE=600 -D__EXTENSIONS__
+	-I$(top_srcdir)/gobject
 
 EXTRA_DIST = \
 	$(tests) \
Index: configure.ac
===================================================================
--- configure.ac	(revision 694)
+++ configure.ac	(working copy)
@@ -141,7 +141,6 @@
 dnl add required cflags ...
 if test "x$GCC" = "xyes"; then
   JH_ADD_CFLAG([-Wall])
-  JH_ADD_CFLAG([-std=c9x])
   JH_ADD_CFLAG([-fno-strict-aliasing])
 fi
 
Index: gobject/Makefile.am
===================================================================
--- gobject/Makefile.am	(revision 694)
+++ gobject/Makefile.am	(working copy)
@@ -1,6 +1,6 @@
 AUTOMAKE_OPTIONS = 1.7
 PLATFORM_VERSION = 2.0
-INCLUDES = $(PYTHON_INCLUDES) $(GLIB_CFLAGS) -DPY_SSIZE_T_CLEAN -D_XOPEN_SOURCE=600 -D__EXTENSIONS__
+INCLUDES = $(PYTHON_INCLUDES) $(GLIB_CFLAGS) -DPY_SSIZE_T_CLEAN
 
 pkgincludedir = $(includedir)/pygtk-$(PLATFORM_VERSION)
 pkginclude_HEADERS = pygobject.h
