diff --git a/src/gallium/drivers/svga/Makefile.am b/src/gallium/drivers/svga/Makefile.am
index e08a133bf71..fdaa3c8ebc4 100644
--- a/src/gallium/drivers/svga/Makefile.am
+++ b/src/gallium/drivers/svga/Makefile.am
@@ -29,7 +29,8 @@ AM_CPPFLAGS = \
 	-I$(top_srcdir)/include \
 	$(GALLIUM_CFLAGS)
 
-AM_CFLAGS = -std=gnu99
+#On some systems -std= must be added to CFLAGS to be the last -std=
+CFLAGS += -std=gnu99
 
 noinst_LTLIBRARIES = libsvga.la
 
diff --git a/src/gallium/winsys/svga/drm/Makefile.am b/src/gallium/winsys/svga/drm/Makefile.am
index 452af3ae034..53bbcc244fd 100644
--- a/src/gallium/winsys/svga/drm/Makefile.am
+++ b/src/gallium/winsys/svga/drm/Makefile.am
@@ -30,7 +30,9 @@ AM_CPPFLAGS = \
 	-I$(top_srcdir)/src/gallium/drivers \
 	$(GALLIUM_CFLAGS) \
 	$(LIBDRM_CFLAGS)
-AM_CFLAGS = -std=gnu99 -D_FILE_OFFSET_BITS=64
+
+#On some systems -std= must be added to CFLAGS to be the last -std=
+CFLAGS += -std=gnu99 -D_FILE_OFFSET_BITS=64
 
 noinst_LTLIBRARIES = libsvgadrm.la