Mercurial > gnulib
view m4/mkdir.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> |
---|---|
date | Fri, 29 Mar 2013 19:47:13 -0700 |
parents | e542fd46ad6f |
children | 344018b6e5d7 |
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# serial 11 # Copyright (C) 2001, 2003-2004, 2006, 2008-2013 Free Software Foundation, Inc. # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. # On some systems, mkdir ("foo/", 0700) fails because of the trailing slash. # On others, mkdir ("foo/./", 0700) mistakenly succeeds. # On such systems, arrange to use a wrapper function. AC_DEFUN([gl_FUNC_MKDIR], [dnl AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_CHECK_HEADERS_ONCE([unistd.h]) AC_CACHE_CHECK([whether mkdir handles trailing slash], [gl_cv_func_mkdir_trailing_slash_works], [rm -rf conftest.dir AC_RUN_IFELSE([AC_LANG_PROGRAM([[ # include <sys/types.h> # include <sys/stat.h> ]], [return mkdir ("conftest.dir/", 0700);])], [gl_cv_func_mkdir_trailing_slash_works=yes], [gl_cv_func_mkdir_trailing_slash_works=no], [case "$host_os" in # Guess yes on glibc systems. *-gnu*) gl_cv_func_mkdir_trailing_slash_works="guessing yes" ;; # If we don't know, assume the worst. *) gl_cv_func_mkdir_trailing_slash_works="guessing no" ;; esac ]) rm -rf conftest.dir ] ) case "$gl_cv_func_mkdir_trailing_slash_works" in *yes) ;; *) REPLACE_MKDIR=1 ;; esac AC_CACHE_CHECK([whether mkdir handles trailing dot], [gl_cv_func_mkdir_trailing_dot_works], [rm -rf conftest.dir AC_RUN_IFELSE([AC_LANG_PROGRAM([[ # include <sys/types.h> # include <sys/stat.h> ]], [return !mkdir ("conftest.dir/./", 0700);])], [gl_cv_func_mkdir_trailing_dot_works=yes], [gl_cv_func_mkdir_trailing_dot_works=no], [case "$host_os" in # Guess yes on glibc systems. *-gnu*) gl_cv_func_mkdir_trailing_dot_works="guessing yes" ;; # If we don't know, assume the worst. *) gl_cv_func_mkdir_trailing_dot_works="guessing no" ;; esac ]) rm -rf conftest.dir ] ) case "$gl_cv_func_mkdir_trailing_dot_works" in *yes) ;; *) REPLACE_MKDIR=1 AC_DEFINE([FUNC_MKDIR_DOT_BUG], [1], [Define to 1 if mkdir mistakenly creates a directory given with a trailing dot component.]) ;; esac ])