diff -purN orig/lib/Makefile.am libnl-2010-04-19/lib/Makefile.am
--- orig/lib/Makefile.am	2010-04-19 11:07:33.580026061 -0400
+++ libnl-2010-04-19/lib/Makefile.am	2010-04-19 11:07:53.483773622 -0400
@@ -1,6 +1,6 @@
 # -*- Makefile -*-
 
-AM_CFLAGS  = -Wall -I${top_srcdir}/include -D_GNU_SOURCE
+AM_CPPFLAGS  = -Wall -I${top_srcdir}/include -D_GNU_SOURCE
 
 lib_LTLIBRARIES = \
 	libnl.la libnl-genl.la libnl-route.la libnl-nf.la
diff -purN orig/src/Makefile.am libnl-2010-04-19/src/Makefile.am
--- orig/src/Makefile.am	2010-04-19 11:07:33.570025513 -0400
+++ libnl-2010-04-19/src/Makefile.am	2010-04-19 11:10:31.739086938 -0400
@@ -2,7 +2,7 @@
 
 SUBDIRS = lib
 
-AM_CFLAGS  = -Wall -I${top_srcdir}/include -D_GNU_SOURCE
+AM_CPPFLAGS  = -Wall -I${top_srcdir}/include -D_GNU_SOURCE
 AM_LDFLAGS = -L${top_builddir}/lib -L${top_builddir}/src/lib -lnl-cli
 
 noinst_PROGRAMS = \