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72 lines
2.6 KiB
72 lines
2.6 KiB
4 years ago
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# serial 11
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# Copyright (C) 2009-2017 Free Software Foundation, Inc.
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#
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# This file is free software; the Free Software Foundation
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# gives unlimited permission to copy and/or distribute it,
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# with or without modifications, as long as this notice is preserved.
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AC_DEFUN([gl_FUNC_STAT],
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[
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AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles
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AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])
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AC_CHECK_FUNCS_ONCE([lstat])
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dnl mingw is the only known platform where stat(".") and stat("./") differ
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AC_CACHE_CHECK([whether stat handles trailing slashes on directories],
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[gl_cv_func_stat_dir_slash],
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[AC_RUN_IFELSE(
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[AC_LANG_PROGRAM(
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[[#include <sys/stat.h>
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]], [[struct stat st; return stat (".", &st) != stat ("./", &st);]])],
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[gl_cv_func_stat_dir_slash=yes], [gl_cv_func_stat_dir_slash=no],
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[case $host_os in
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mingw*) gl_cv_func_stat_dir_slash="guessing no";;
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*) gl_cv_func_stat_dir_slash="guessing yes";;
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esac])])
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dnl AIX 7.1, Solaris 9, mingw64 mistakenly succeed on stat("file/").
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dnl (For mingw, this is due to a broken stat() override in libmingwex.a.)
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dnl FreeBSD 7.2 mistakenly succeeds on stat("link-to-file/").
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AC_CACHE_CHECK([whether stat handles trailing slashes on files],
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[gl_cv_func_stat_file_slash],
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[touch conftest.tmp
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# Assume that if we have lstat, we can also check symlinks.
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if test $ac_cv_func_lstat = yes; then
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ln -s conftest.tmp conftest.lnk
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fi
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AC_RUN_IFELSE(
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[AC_LANG_PROGRAM(
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[[#include <sys/stat.h>
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]], [[int result = 0;
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struct stat st;
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if (!stat ("conftest.tmp/", &st))
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result |= 1;
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#if HAVE_LSTAT
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if (!stat ("conftest.lnk/", &st))
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result |= 2;
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#endif
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return result;
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]])],
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[gl_cv_func_stat_file_slash=yes], [gl_cv_func_stat_file_slash=no],
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[case "$host_os" in
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# Guess yes on glibc systems.
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*-gnu*) gl_cv_func_stat_file_slash="guessing yes" ;;
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# If we don't know, assume the worst.
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*) gl_cv_func_stat_file_slash="guessing no" ;;
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esac
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])
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rm -f conftest.tmp conftest.lnk])
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case $gl_cv_func_stat_dir_slash in
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*no) REPLACE_STAT=1
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AC_DEFINE([REPLACE_FUNC_STAT_DIR], [1], [Define to 1 if stat needs
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help when passed a directory name with a trailing slash]);;
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esac
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case $gl_cv_func_stat_file_slash in
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*no) REPLACE_STAT=1
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AC_DEFINE([REPLACE_FUNC_STAT_FILE], [1], [Define to 1 if stat needs
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help when passed a file name with a trailing slash]);;
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esac
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])
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# Prerequisites of lib/stat.c.
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AC_DEFUN([gl_PREREQ_STAT], [:])
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