--- Makefile.orig	2008-08-17 00:39:03.000000000 -0400
+++ Makefile	2008-08-17 00:39:17.000000000 -0400
@@ -26,7 +26,7 @@
 SHOES_IDENT = "shoes ${RELEASE_NAME} (0.r${REVISION}) [${RUBY_PLATFORM}]"
 
 VERSION = 0.r${REVISION}
-CFLAGS = -DSHOES_GTK -fPIC ${INCS} ${CAIRO_CFLAGS} ${PANGO_CFLAGS} ${GTK_CFLAGS} ${CURL_CFLAGS} -I${RUBY_INCS}
+CFLAGS += -DSHOES_GTK -fPIC ${INCS} ${CAIRO_CFLAGS} ${PANGO_CFLAGS} ${GTK_CFLAGS} ${CURL_CFLAGS} -I${RUBY_INCS}
 LDFLAGS = -fPIC ${LIBS} ${CAIRO_LIB} ${PANGO_LIB} ${GTK_LIB} ${CURL_LIB} ${RUBY_LIBS}
 OPTIONS =