# serial 11

# Copyright (C) 2009-2014 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.

AC_DEFUN([gl_FUNC_STAT],

[

  AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles

  AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS])

  AC_CHECK_FUNCS_ONCE([lstat])

  dnl mingw is the only known platform where stat(".") and stat("./") differ

  AC_CACHE_CHECK([whether stat handles trailing slashes on directories],

      [gl_cv_func_stat_dir_slash],

      [AC_RUN_IFELSE(

         [AC_LANG_PROGRAM(

           [[#include <sys/stat.h>

]], [[struct stat st; return stat (".", &st) != stat ("./", &st);]])],

         [gl_cv_func_stat_dir_slash=yes], [gl_cv_func_stat_dir_slash=no],

         [case $host_os in

            mingw*) gl_cv_func_stat_dir_slash="guessing no";;

            *) gl_cv_func_stat_dir_slash="guessing yes";;

          esac])])

  dnl AIX 7.1, Solaris 9, mingw64 mistakenly succeed on stat("file/").

  dnl (For mingw, this is due to a broken stat() override in libmingwex.a.)

  dnl FreeBSD 7.2 mistakenly succeeds on stat("link-to-file/").

  AC_CACHE_CHECK([whether stat handles trailing slashes on files],

      [gl_cv_func_stat_file_slash],

      [touch conftest.tmp

       # Assume that if we have lstat, we can also check symlinks.

       if test $ac_cv_func_lstat = yes; then

         ln -s conftest.tmp conftest.lnk

       fi

       AC_RUN_IFELSE(

         [AC_LANG_PROGRAM(

           [[#include <sys/stat.h>

]], [[int result = 0;

      struct stat st;

      if (!stat ("conftest.tmp/", &st))

        result |= 1;

#if HAVE_LSTAT

      if (!stat ("conftest.lnk/", &st))

        result |= 2;

#endif

      return result;

           ]])],

         [gl_cv_func_stat_file_slash=yes], [gl_cv_func_stat_file_slash=no],

         [case "$host_os" in

                    # Guess yes on glibc systems.

            *-gnu*) gl_cv_func_stat_file_slash="guessing yes" ;;

                    # If we don't know, assume the worst.

            *)      gl_cv_func_stat_file_slash="guessing no" ;;

          esac

         ])

       rm -f conftest.tmp conftest.lnk])

  case $gl_cv_func_stat_dir_slash in

    *no) REPLACE_STAT=1

      AC_DEFINE([REPLACE_FUNC_STAT_DIR], [1], [Define to 1 if stat needs

        help when passed a directory name with a trailing slash]);;

  esac

  case $gl_cv_func_stat_file_slash in

    *no) REPLACE_STAT=1

      AC_DEFINE([REPLACE_FUNC_STAT_FILE], [1], [Define to 1 if stat needs

        help when passed a file name with a trailing slash]);;

  esac

])

# Prerequisites of lib/stat.c.

AC_DEFUN([gl_PREREQ_STAT], [:])