1# glibc2.m4 serial 1 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 2.0 or newer. 8# From Bruno Haible. 9 10AC_DEFUN([gt_GLIBC2], 11 [ 12 AC_CACHE_CHECK(whether we are using the GNU C Library 2 or newer, 13 ac_cv_gnu_library_2, 14 [AC_EGREP_CPP([Lucky GNU user], 15 [ 16#include <features.h> 17#ifdef __GNU_LIBRARY__ 18 #if (__GLIBC__ >= 2) 19 Lucky GNU user 20 #endif 21#endif 22 ], 23 ac_cv_gnu_library_2=yes, 24 ac_cv_gnu_library_2=no) 25 ] 26 ) 27 AC_SUBST(GLIBC2) 28 GLIBC2="$ac_cv_gnu_library_2" 29 ] 30) 31