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1# glibc21.m4 serial 3
2dnl Copyright (C) 2000-2002, 2004 Free Software Foundation, Inc.
3dnl This file is free software; the Free Software Foundation
4dnl gives unlimited permission to copy and/or distribute it,
5dnl with or without modifications, as long as this notice is preserved.
6
7# Test for the GNU C Library, version 2.1 or newer.
8# From Bruno Haible.
9
10AC_DEFUN([gl_GLIBC21],
11 [
12 AC_CACHE_CHECK(whether we are using the GNU C Library 2.1 or newer,
13 ac_cv_gnu_library_2_1,
14 [AC_EGREP_CPP([Lucky GNU user],
15 [
16#include <features.h>
17#ifdef __GNU_LIBRARY__
18 #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)
19 Lucky GNU user
20 #endif
21#endif
22 ],
23 ac_cv_gnu_library_2_1=yes,
24 ac_cv_gnu_library_2_1=no)
25 ]
26 )
27 AC_SUBST(GLIBC21)
28 GLIBC21="$ac_cv_gnu_library_2_1"
29 ]
30)