diff --git a/include/builddefs.in b/include/builddefs.in
index 4c8ec64..81ebfcd 100644
--- a/include/builddefs.in
+++ b/include/builddefs.in
@@ -25,6 +25,7 @@ OPTIMIZER = @opt_build@
 MALLOCLIB = @malloc_lib@
 LOADERFLAGS = @LDFLAGS@
 LTLDFLAGS = @LDFLAGS@
+CFLAGS = @CFLAGS@
 
 LIBRT = @librt@
 LIBUUID = @libuuid@