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      1  1.1  christos # glibc21.m4 serial 3
      2  1.1  christos dnl Copyright (C) 2000-2002, 2004 Free Software Foundation, Inc.
      3  1.1  christos dnl This file is free software, distributed under the terms of the GNU
      4  1.1  christos dnl General Public License.  As a special exception to the GNU General
      5  1.1  christos dnl Public License, this file may be distributed as part of a program
      6  1.1  christos dnl that contains a configuration script generated by Autoconf, under
      7  1.1  christos dnl the same distribution terms as the rest of that program.
      8  1.1  christos 
      9  1.1  christos # Test for the GNU C Library, version 2.1 or newer.
     10  1.1  christos # From Bruno Haible.
     11  1.1  christos 
     12  1.1  christos AC_DEFUN([gl_GLIBC21],
     13  1.1  christos   [
     14  1.1  christos     AC_CACHE_CHECK(whether we are using the GNU C Library 2.1 or newer,
     15  1.1  christos       ac_cv_gnu_library_2_1,
     16  1.1  christos       [AC_EGREP_CPP([Lucky GNU user],
     17  1.1  christos 	[
     18  1.1  christos #include <features.h>
     19  1.1  christos #ifdef __GNU_LIBRARY__
     20  1.1  christos  #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)
     21  1.1  christos   Lucky GNU user
     22  1.1  christos  #endif
     23  1.1  christos #endif
     24  1.1  christos 	],
     25  1.1  christos 	ac_cv_gnu_library_2_1=yes,
     26  1.1  christos 	ac_cv_gnu_library_2_1=no)
     27  1.1  christos       ]
     28  1.1  christos     )
     29  1.1  christos     AC_SUBST(GLIBC21)
     30  1.1  christos     GLIBC21="$ac_cv_gnu_library_2_1"
     31  1.1  christos   ]
     32  1.1  christos )
     33