X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;f=lib%2Fgl_xoset.h;h=b30b2ced83249a65fa3331e5ec0050ed353d77bb;hb=ece81a73b64483a68f5157420836d84beb3a1680;hp=7ab0d496e07d1b43b56a5ddb295367f639cfc970;hpb=25105bbff6caf8e2fa585790e2ae4a32ac6a7265;p=gnulib.git

diff --git a/lib/gl_xoset.h b/lib/gl_xoset.h
index 7ab0d496e..b30b2ced8 100644
--- a/lib/gl_xoset.h
+++ b/lib/gl_xoset.h
@@ -21,6 +21,9 @@
 #include "gl_oset.h"
 #include "xalloc.h"
 
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
 _GL_INLINE_HEADER_BEGIN
 #ifndef GL_XOSET_INLINE
 # define GL_XOSET_INLINE _GL_INLINE