1 # glibc21.m4 serial 3 2 dnl Copyright (C) 2000-2002, 2004 Free Software Foundation, Inc. 3 dnl This file is free software; the Free Software Foundation 4 dnl gives unlimited permission to copy and/or distribute it, 5 dnl 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 10 AC_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 ) 31
