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# access.m4
# serial 3
dnl Copyright (C) 2019-2025 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 This file is offered as-is, without any warranty.
AC_DEFUN([gl_FUNC_ACCESS],
[
AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
AC_REQUIRE([AC_CANONICAL_HOST])
dnl On native Windows, access (= _access) does not support the X_OK mode.
dnl It works by chance on some versions of mingw.
case "$host_os" in
mingw* | windows*)
REPLACE_ACCESS=1
;;
*)
dnl Mac OS X 10.5 mistakenly allows access("link-to-file/",amode).
AC_CHECK_FUNCS_ONCE([lstat])
AC_CACHE_CHECK([whether access honors trailing slash],
[gl_cv_func_access_slash_works],
[# Assume that if we have lstat, we can also check symlinks.
if test $ac_cv_func_lstat = yes; then
rm -rf conftest.f conftest.lnk
touch conftest.f || AC_MSG_ERROR([cannot create temporary files])
ln -s conftest.f conftest.lnk
AC_RUN_IFELSE(
[AC_LANG_PROGRAM([[
#include <unistd.h>
]],
[[int result = 0;
if (access ("conftest.lnk/", R_OK) == 0)
result |= 1;
return result;
]])],
[gl_cv_func_access_slash_works=yes],
[gl_cv_func_access_slash_works=no],
dnl When crosscompiling, assume access is broken.
[case "$host_os" in
# Guess yes on Linux systems.
linux-* | linux) gl_cv_func_access_slash_works="guessing yes" ;;
# Guess yes on systems that emulate the Linux system calls.
midipix*) gl_cv_func_access_slash_works="guessing yes" ;;
# Guess yes on glibc systems.
*-gnu*) gl_cv_func_access_slash_works="guessing yes" ;;
# If we don't know, obey --enable-cross-guesses.
*) gl_cv_func_access_slash_works="$gl_cross_guess_normal" ;;
esac
])
rm -rf conftest.f conftest.lnk
else
gl_cv_func_access_slash_works="guessing yes"
fi
])
case "$gl_cv_func_access_slash_works" in
*yes) ;;
*)
REPLACE_ACCESS=1
AC_DEFINE([ACCESS_TRAILING_SLASH_BUG], [1],
[Define if access does not correctly handle trailing slashes.])
;;
esac
;;
esac
])
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