1 # glibc21.m4 serial 5 2 dnl Copyright (C) 2000-2002, 2004, 2008, 2010-2012 Free Software Foundation, 3 dnl Inc. 4 dnl This file is free software; the Free Software Foundation 5 dnl gives unlimited permission to copy and/or distribute it, 6 dnl with or without modifications, as long as this notice is preserved. 7 8 # Test for the GNU C Library, version 2.1 or newer, or uClibc. 9 # From Bruno Haible. 10 11 AC_DEFUN([gl_GLIBC21], 12 [ 13 AC_CACHE_CHECK([whether we are using the GNU C Library >= 2.1 or uClibc], 14 [ac_cv_gnu_library_2_1], 15 [AC_EGREP_CPP([Lucky], 16 [ 17 #include <features.h> 18 #ifdef __GNU_LIBRARY__ 19 #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2) 20 Lucky GNU user 21 #endif 22 #endif 23 #ifdef __UCLIBC__ 24 Lucky user 25 #endif 26 ], 27 [ac_cv_gnu_library_2_1=yes], 28 [ac_cv_gnu_library_2_1=no]) 29 ] 30 ) 31 AC_SUBST([GLIBC21]) 32 GLIBC21="$ac_cv_gnu_library_2_1" 33 ] 34 ) 35
