--- config.mak.in
+++ config.mak.in
@@ -2,9 +2,9 @@
 # @configure_input@
 
 CC = @CC@
-CFLAGS = @CFLAGS@
+CFLAGS = @CFLAGS@ $(EXTRA_CFLAGS)
 CPPFLAGS = @CPPFLAGS@
-LDFLAGS = @LDFLAGS@
+LDFLAGS = @LDFLAGS@ $(EXTRA_LDFLAGS)
 AR = @AR@
 TAR = @TAR@
 DIFF = @DIFF@