-# mmap-anon.m4 serial 1
-dnl Copyright (C) 2005 Free Software Foundation, Inc.
+# mmap-anon.m4 serial 4
+dnl Copyright (C) 2005, 2007 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.
-AC_DEFUN([gl_FUNC_MMAP],
+AC_DEFUN([gl_FUNC_MMAP_ANON],
[
dnl Work around a bug of AC_EGREP_CPP in autoconf-2.57.
AC_REQUIRE([AC_PROG_CPP])
AC_REQUIRE([AC_PROG_EGREP])
dnl Persuade glibc <sys/mman.h> to define MAP_ANONYMOUS.
- AC_REQUIRE([AC_GNU_SOURCE])
+ AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS])
# Check for mmap()
AC_FUNC_MMAP
#endif
],
[gl_have_mmap_anonymous=yes])
- if test $gl_have_mmap_anonymous = no; then
- AC_EGREP_HEADER([MAP_ANON], [
+ if test $gl_have_mmap_anonymous != yes; then
+ AC_EGREP_CPP([I cant identify this map.], [
#include <sys/mman.h>
#ifdef MAP_ANON
I cant identify this map.
[Define to 1 if mmap()'s MAP_ANONYMOUS flag is available after including
config.h and <sys/mman.h>.])
fi
-
- AH_VERBATIM([MAP_FILE],
-[/* Define MAP_FILE when it isn't otherwise. */
-#ifndef MAP_FILE
-# define MAP_FILE 0
-#endif])
fi
])