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-rw-r--r--gl/m4/glibc2.m431
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1# glibc2.m4 serial 3
2dnl Copyright (C) 2000-2002, 2004, 2008, 2010-2013 Free Software Foundation,
3dnl Inc.
4dnl This file is free software; the Free Software Foundation
5dnl gives unlimited permission to copy and/or distribute it,
6dnl with or without modifications, as long as this notice is preserved.
7
8# Test for the GNU C Library, version 2.0 or newer.
9# From Bruno Haible.
10
11AC_DEFUN([gt_GLIBC2],
12 [
13 AC_CACHE_CHECK([whether we are using the GNU C Library 2 or newer],
14 [ac_cv_gnu_library_2],
15 [AC_EGREP_CPP([Lucky GNU user],
16 [
17#include <features.h>
18#ifdef __GNU_LIBRARY__
19 #if (__GLIBC__ >= 2) && !defined __UCLIBC__
20 Lucky GNU user
21 #endif
22#endif
23 ],
24 [ac_cv_gnu_library_2=yes],
25 [ac_cv_gnu_library_2=no])
26 ]
27 )
28 AC_SUBST([GLIBC2])
29 GLIBC2="$ac_cv_gnu_library_2"
30 ]
31)