m4/glibc21.m4

   1 # glibc21.m4 serial 2 (fileutils-4.1.3, gettext-0.10.40)
   2 dnl Copyright (C) 2000-2002 Free Software Foundation, Inc.
   3 dnl This file is free software, distributed under the terms of the GNU
   4 dnl General Public License.  As a special exception to the GNU General
   5 dnl Public License, this file may be distributed as part of a program
   6 dnl that contains a configuration script generated by Autoconf, under
   7 dnl the same distribution terms as the rest of that program.
   8
   9 # Test for the GNU C Library, version 2.1 or newer.
  10 # From Bruno Haible.
  11
  12 AC_DEFUN([jm_GLIBC21],
  13   [
  14     AC_CACHE_CHECK(whether we are using the GNU C Library 2.1 or newer,
  15       ac_cv_gnu_library_2_1,
  16       [AC_EGREP_CPP([Lucky GNU user],
  17         [
  18 #include <features.h>
  19 #ifdef __GNU_LIBRARY__
  20  #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)
  21   Lucky GNU user
  22  #endif
  23 #endif
  24         ],
  25         ac_cv_gnu_library_2_1=yes,
  26         ac_cv_gnu_library_2_1=no)
  27       ]
  28     )
  29     AC_SUBST(GLIBC21)
  30     GLIBC21="$ac_cv_gnu_library_2_1"
  31   ]
  32 )