Mercurial > gnulib
view m4/remove.m4 @ 17364:7524d97ae56f
stdalign: port to stricter ISO C11
ISO C11 says that _Alignof's operand must be a parenthesized type.
Problem reported by Eli Zaretskii in
<http://lists.gnu.org/archive/html/emacs-devel/2013-03/msg00960.html>.
* doc/posix-headers/stdalign.texi (stdalign.h): Document this.
* m4/stdalign.m4 (gl_STDALIGN_H): Don't use _Alignof (expr).
author | Paul Eggert <eggert@cs.ucla.edu> |
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date | Fri, 29 Mar 2013 19:47:13 -0700 |
parents | e542fd46ad6f |
children | 344018b6e5d7 |
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# remove.m4 serial 5 dnl Copyright (C) 2009-2013 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_FUNC_REMOVE], [ AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_REQUIRE([gl_STDIO_H_DEFAULTS]) AC_REQUIRE([gl_FUNC_RMDIR]) AC_REQUIRE([gl_FUNC_UNLINK]) if { case "$gl_cv_func_rmdir_works:$gl_cv_func_unlink_honors_slashes" in *yes:*yes) false;; *) true;; esac }; then dnl If either underlying syscall is broken, then remove likely has dnl the same bug; blindly use our replacement. REPLACE_REMOVE=1 else dnl C89 requires remove(), but only POSIX requires it to handle dnl directories. On mingw, directories fails with EPERM. AC_CACHE_CHECK([whether remove handles directories], [gl_cv_func_remove_dir_works], [mkdir conftest.dir AC_RUN_IFELSE( [AC_LANG_PROGRAM( [[#include <stdio.h> ]], [[return remove ("conftest.dir");]])], [gl_cv_func_remove_dir_works=yes], [gl_cv_func_remove_dir_works=no], [case $host_os in mingw*) gl_cv_func_remove_dir_works="guessing no";; *) gl_cv_func_remove_dir_works="guessing yes";; esac]) rm -rf conftest.dir]) case $gl_cv_func_remove_dir_works in *no*) REPLACE_REMOVE=1;; esac fi ])