1 # serial 11 2 3 # Copyright (C) 2009-2012 Free Software Foundation, Inc. 4 # 5 # This file is free software; the Free Software Foundation 6 # gives unlimited permission to copy and/or distribute it, 7 # with or without modifications, as long as this notice is preserved. 8 9 AC_DEFUN([gl_FUNC_STAT], 10 [ 11 AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles 12 AC_REQUIRE([gl_SYS_STAT_H_DEFAULTS]) 13 AC_CHECK_FUNCS_ONCE([lstat]) 14 dnl mingw is the only known platform where stat(".") and stat("./") differ 15 AC_CACHE_CHECK([whether stat handles trailing slashes on directories], 16 [gl_cv_func_stat_dir_slash], 17 [AC_RUN_IFELSE( 18 [AC_LANG_PROGRAM( 19 [[#include <sys/stat.h> 20 ]], [[struct stat st; return stat (".", &st) != stat ("./", &st);]])], 21 [gl_cv_func_stat_dir_slash=yes], [gl_cv_func_stat_dir_slash=no], 22 [case $host_os in 23 mingw*) gl_cv_func_stat_dir_slash="guessing no";; 24 *) gl_cv_func_stat_dir_slash="guessing yes";; 25 esac])]) 26 dnl AIX 7.1, Solaris 9, mingw64 mistakenly succeed on stat("file/"). 27 dnl (For mingw, this is due to a broken stat() override in libmingwex.a.) 28 dnl FreeBSD 7.2 mistakenly succeeds on stat("link-to-file/"). 29 AC_CACHE_CHECK([whether stat handles trailing slashes on files], 30 [gl_cv_func_stat_file_slash], 31 [touch conftest.tmp 32 # Assume that if we have lstat, we can also check symlinks. 33 if test $ac_cv_func_lstat = yes; then 34 ln -s conftest.tmp conftest.lnk 35 fi 36 AC_RUN_IFELSE( 37 [AC_LANG_PROGRAM( 38 [[#include <sys/stat.h> 39 ]], [[int result = 0; 40 struct stat st; 41 if (!stat ("conftest.tmp/", &st)) 42 result |= 1; 43 #if HAVE_LSTAT 44 if (!stat ("conftest.lnk/", &st)) 45 result |= 2; 46 #endif 47 return result; 48 ]])], 49 [gl_cv_func_stat_file_slash=yes], [gl_cv_func_stat_file_slash=no], 50 [case "$host_os" in 51 # Guess yes on glibc systems. 52 *-gnu*) gl_cv_func_stat_file_slash="guessing yes" ;; 53 # If we don't know, assume the worst. 54 *) gl_cv_func_stat_file_slash="guessing no" ;; 55 esac 56 ]) 57 rm -f conftest.tmp conftest.lnk]) 58 case $gl_cv_func_stat_dir_slash in 59 *no) REPLACE_STAT=1 60 AC_DEFINE([REPLACE_FUNC_STAT_DIR], [1], [Define to 1 if stat needs 61 help when passed a directory name with a trailing slash]);; 62 esac 63 case $gl_cv_func_stat_file_slash in 64 *no) REPLACE_STAT=1 65 AC_DEFINE([REPLACE_FUNC_STAT_FILE], [1], [Define to 1 if stat needs 66 help when passed a file name with a trailing slash]);; 67 esac 68 ]) 69 70 # Prerequisites of lib/stat.c. 71 AC_DEFUN([gl_PREREQ_STAT], [:]) 72
