error: avoid expand-before-require warning

[pspp] / m4 / errno_h.m4

diff --git a/m4/errno_h.m4 b/m4/errno_h.m4
index 0682d1ab63b8912ea1079605f159227de754927c..4d77672cb70e7190bd36a09fe84c272d9c9c0766 100644 (file)
--- a/m4/errno_h.m4
+++ b/m4/errno_h.m4
@@ -1,17 +1,11 @@
-# errno_h.m4 serial 3
+# errno_h.m4 serial 4

 dnl Copyright (C) 2004, 2006, 2008, 2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 
 dnl Copyright (C) 2004, 2006, 2008, 2009 Free Software Foundation, Inc.
 dnl This file is free software; the Free Software Foundation
 dnl gives unlimited permission to copy and/or distribute it,
 dnl with or without modifications, as long as this notice is preserved.
 

-AC_DEFUN([gl_HEADER_ERRNO_H],
-[
-  dnl Use AC_REQUIRE here, so that the default behavior below is expanded
-  dnl once only, before all statements that occur in other macros.
-  AC_REQUIRE([gl_HEADER_ERRNO_H_BODY])
-])
-
-AC_DEFUN([gl_HEADER_ERRNO_H_BODY],
+dnl This macro must pass through AC_REQUIRE (never directly invoke it).
+AC_DEFUN_ONCE([gl_HEADER_ERRNO_H],

 [
   AC_REQUIRE([AC_PROG_CC])
   AC_CACHE_CHECK([for complete errno.h], [gl_cv_header_errno_h_complete], [
 [
   AC_REQUIRE([AC_PROG_CC])
   AC_CACHE_CHECK([for complete errno.h], [gl_cv_header_errno_h_complete], [