1# glibc2.m4 serial 3 2dnl Copyright (C) 2000-2002, 2004, 2008, 2010-2011 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) 32