headers: check that _GL_INLINE_HEADER_BEGIN is defined Suggested by Bruce Korb in: http://lists.gnu.org/archive/html/bug-gnulib/2013-08/msg00070.html * doc/extern-inline.texi (extern inline): Suggest checking that _GL_INLINE_HEADER_BEGIN is defined. * lib/acl-internal.h, lib/argp-fmtstream.h, lib/argp.h: * lib/binary-io.h, lib/bitrotate.h, lib/count-leading-zeros.h: * lib/count-one-bits.h, lib/eealloc.h, lib/execinfo.in.h: * lib/gethrxtime.h, lib/gl_list.h, lib/gl_oset.h, lib/gl_xlist.h: * lib/gl_xoset.h, lib/gl_xsublist.h, lib/glthread/cond.h: * lib/glthread/thread.h, lib/math.in.h, lib/mbchar.h, lib/mbfile.h: * lib/mbiter.h, lib/mbuiter.h, lib/openat.h, lib/pipe-filter-aux.h: * lib/priv-set.h, lib/pthread.in.h, lib/savewd.h, lib/se-context.in.h: * lib/se-selinux.in.h, lib/sig-handler.h, lib/stat-time.h: * lib/sys_socket.in.h, lib/timespec.h, lib/u64.h, lib/unistd.in.h: * lib/utimens.h, lib/wctype.in.h, lib/xalloc.h, lib/xsize.h: * lib/xtime.h: Check that _GL_INLINE_HEADER_BEGIN is defined.

--- a/lib/openat.h	Sun Aug 18 02:05:51 2013 +0100
+++ b/lib/openat.h	Wed Aug 28 18:49:38 2013 -0700
@@ -26,6 +26,9 @@
 #include <unistd.h>
 #include <stdbool.h>
 
+#ifndef _GL_INLINE_HEADER_BEGIN
+ #error "Please include config.h first."
+#endif
 _GL_INLINE_HEADER_BEGIN
 
 #if !HAVE_OPENAT