-dnl Copyright (C) 2003, 2004 Free Software Foundation, Inc.
-dnl This file is free software, distributed under the terms of the GNU
-dnl General Public License. As a special exception to the GNU General
-dnl Public License, this file may be distributed as part of a program
-dnl that contains a configuration script generated by Autoconf, under
-dnl the same distribution terms as the rest of that program.
+dnl Copyright (C) 2003-2010 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 serial 4
AC_DEFUN([gl_UTIMENS],
[
+ AC_LIBOBJ([utimens])
+
dnl Prerequisites of lib/utimens.c.
- AC_REQUIRE([gl_TIMESPEC])
AC_REQUIRE([gl_FUNC_UTIMES])
AC_REQUIRE([gl_CHECK_TYPE_STRUCT_TIMESPEC])
AC_REQUIRE([gl_CHECK_TYPE_STRUCT_UTIMBUF])
- AC_CHECK_FUNCS_ONCE(futimes)
+ AC_CHECK_FUNCS_ONCE([futimes futimesat futimens utimensat lutimes])
+
+ if test $ac_cv_func_futimens = no && test $ac_cv_func_futimesat = yes; then
+ dnl FreeBSD 8.0-rc2 mishandles futimesat(fd,NULL,time). It is not
+ dnl standardized, but Solaris implemented it first and uses it as
+ dnl its only means to set fd time.
+ AC_CACHE_CHECK([whether futimesat handles NULL file],
+ [gl_cv_func_futimesat_works],
+ [touch conftest.file
+ AC_RUN_IFELSE([AC_LANG_PROGRAM([[
+#include <stddef.h>
+#include <sys/times.h>
+]], [[ int fd = open ("conftest.file", O_RDWR);
+ if (fd < 0) return 1;
+ if (futimesat (fd, NULL, NULL)) return 2;
+ ]])],
+ [gl_cv_func_futimesat_works=yes],
+ [gl_cv_func_futimesat_works=no],
+ [gl_cv_func_futimesat_works="guessing no"])
+ rm -f conftest.file])
+ if test "$gl_cv_func_futimesat_works" != yes; then
+ AC_DEFINE([FUTIMESAT_NULL_BUG], [1],
+ [Define to 1 if futimesat mishandles a NULL file name.])
+ fi
+ fi
])