count-one-bits: port to MSC; support types wider than 64 bits

[gnulib.git] / lib / mbuiter.h

diff --git a/lib/mbuiter.h b/lib/mbuiter.h
index c5f5fce..ca130a4 100644 (file)
--- a/lib/mbuiter.h
+++ b/lib/mbuiter.h
@@ -106,6 +106,9 @@
 #include "mbchar.h"
 #include "strnlen1.h"
 
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
 _GL_INLINE_HEADER_BEGIN
 #ifndef MBUITER_INLINE
 # define MBUITER_INLINE _GL_INLINE