Mercurial > gnulib
view m4/readlinkat.m4 @ 40195:9734faea5d7b
relocatable-prog: Use wrapper-free installation also on Mac OS X 10.4.
* m4/relocatable.m4 (gl_RELOCATABLE_BODY): Treat Mac OS X 10.4 like 10.5.
author | Bruno Haible <bruno@clisp.org> |
---|---|
date | Sun, 24 Feb 2019 00:25:02 +0100 |
parents | b06060465f09 |
children |
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# serial 5 # See if we need to provide readlinkat replacement. dnl Copyright (C) 2009-2019 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. # Written by Eric Blake. AC_DEFUN([gl_FUNC_READLINKAT], [ AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) AC_CHECK_FUNCS_ONCE([readlinkat]) AC_REQUIRE([gl_FUNC_READLINK]) if test $ac_cv_func_readlinkat = no; then HAVE_READLINKAT=0 else AC_CACHE_CHECK([whether readlinkat signature is correct], [gl_cv_decl_readlinkat_works], [AC_COMPILE_IFELSE( [AC_LANG_PROGRAM( [[#include <unistd.h> /* Check whether original declaration has correct type. */ ssize_t readlinkat (int, char const *, char *, size_t);]])], [gl_cv_decl_readlinkat_works=yes], [gl_cv_decl_readlinkat_works=no])]) # Assume readinkat has the same trailing slash bug as readlink, # as is the case on Mac Os X 10.10 case "$gl_cv_func_readlink_works" in *yes) if test "$gl_cv_decl_readlinkat_works" != yes; then REPLACE_READLINKAT=1 fi ;; *) REPLACE_READLINKAT=1 ;; esac fi ])