67 lines
2.6 KiB
Text
67 lines
2.6 KiB
Text
# access.m4
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# serial 3
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dnl Copyright (C) 2019-2024 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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dnl This file is offered as-is, without any warranty.
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AC_DEFUN([gl_FUNC_ACCESS],
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[
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AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
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AC_REQUIRE([AC_CANONICAL_HOST])
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dnl On native Windows, access (= _access) does not support the X_OK mode.
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dnl It works by chance on some versions of mingw.
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case "$host_os" in
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mingw* | windows*)
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REPLACE_ACCESS=1
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;;
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*)
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dnl Mac OS X 10.5 mistakenly allows access("link-to-file/",amode).
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AC_CHECK_FUNCS_ONCE([lstat])
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AC_CACHE_CHECK([whether access honors trailing slash],
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[gl_cv_func_access_slash_works],
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[# Assume that if we have lstat, we can also check symlinks.
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if test $ac_cv_func_lstat = yes; then
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rm -rf conftest.f conftest.lnk
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touch conftest.f || AC_MSG_ERROR([cannot create temporary files])
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ln -s conftest.f conftest.lnk
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AC_RUN_IFELSE(
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[AC_LANG_PROGRAM([[
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#include <unistd.h>
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]],
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[[int result = 0;
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if (access ("conftest.lnk/", R_OK) == 0)
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result |= 1;
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return result;
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]])],
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[gl_cv_func_access_slash_works=yes],
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[gl_cv_func_access_slash_works=no],
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dnl When crosscompiling, assume access is broken.
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[case "$host_os" in
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# Guess yes on Linux systems.
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linux-* | linux) gl_cv_func_access_slash_works="guessing yes" ;;
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# Guess yes on systems that emulate the Linux system calls.
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midipix*) gl_cv_func_access_slash_works="guessing yes" ;;
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# Guess yes on glibc systems.
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*-gnu*) gl_cv_func_access_slash_works="guessing yes" ;;
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# If we don't know, obey --enable-cross-guesses.
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*) gl_cv_func_access_slash_works="$gl_cross_guess_normal" ;;
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esac
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])
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rm -rf conftest.f conftest.lnk
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else
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gl_cv_func_access_slash_works="guessing yes"
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fi
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])
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case "$gl_cv_func_access_slash_works" in
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*yes) ;;
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*)
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REPLACE_ACCESS=1
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AC_DEFINE([ACCESS_TRAILING_SLASH_BUG], [1],
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[Define if access does not correctly handle trailing slashes.])
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;;
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esac
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;;
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esac
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])
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