X-Git-Url: http://erislabs.net/gitweb/?a=blobdiff_plain;ds=inline;f=m4%2Ffcntl_h.m4;h=118a4fa62e51f4c0ef6785367a3c05475c8f3673;hb=cb7317d75af2de40fecdd949e3fb11a85b09e10a;hp=e3b9aa526cb31b5929fad6fe012b49928f235b63;hpb=5e6b92bb993a0e913877c495687556df918d7d86;p=gnulib.git

diff --git a/m4/fcntl_h.m4 b/m4/fcntl_h.m4
index e3b9aa526..118a4fa62 100644
--- a/m4/fcntl_h.m4
+++ b/m4/fcntl_h.m4
@@ -1,5 +1,6 @@
+# serial 5
 # Configure fcntl.h.
-dnl Copyright (C) 2006, 2007 Free Software Foundation, Inc.
+dnl Copyright (C) 2006, 2007, 2009 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.
@@ -9,7 +10,9 @@ dnl Written by Paul Eggert.
 AC_DEFUN([gl_FCNTL_H],
 [
   AC_REQUIRE([gl_FCNTL_H_DEFAULTS])
-  AC_CACHE_CHECK([for working fcntl.h], gl_cv_header_working_fcntl_h,
+  dnl Persuade glibc <fcntl.h> to define O_NOATIME and O_NOFOLLOW.
+  AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
+  AC_CACHE_CHECK([for working fcntl.h], [gl_cv_header_working_fcntl_h],
     [AC_RUN_IFELSE(
        [AC_LANG_PROGRAM(
 	  [[#include <sys/types.h>
@@ -35,6 +38,7 @@ AC_DEFUN([gl_FCNTL_H],
 	      if (symlink (".", sym) != 0
 		  || close (open (sym, O_RDONLY | O_NOFOLLOW)) == 0)
 		status |= 32;
+	      unlink (sym);
 	    }
 	    {
 	      static char const file[] = "confdefs.h";
@@ -88,7 +92,10 @@ AC_DEFUN([gl_FCNTL_MODULE_INDICATOR],
 
 AC_DEFUN([gl_FCNTL_H_DEFAULTS],
 [
-  GNULIB_OPEN=0;  AC_SUBST([GNULIB_OPEN])
+  GNULIB_OPEN=0;    AC_SUBST([GNULIB_OPEN])
+  GNULIB_OPENAT=0;  AC_SUBST([GNULIB_OPENAT])
   dnl Assume proper GNU behavior unless another module says otherwise.
-  REPLACE_OPEN=0; AC_SUBST([REPLACE_OPEN])
+  HAVE_OPENAT=1;    AC_SUBST([HAVE_OPENAT])
+  REPLACE_OPEN=0;   AC_SUBST([REPLACE_OPEN])
+  REPLACE_OPENAT=0; AC_SUBST([REPLACE_OPENAT])
 ])