# glibc2.m4 serial 3

dnl Copyright (C) 2000-2002, 2004, 2008, 2010-2013 Free Software Foundation,

dnl Inc.

dnl This file is free software; the Free Software Foundation

dnl gives unlimited permission to copy and/or distribute it,

dnl with or without modifications, as long as this notice is preserved.

# Test for the GNU C Library, version 2.0 or newer.

# From Bruno Haible.

AC_DEFUN([gt_GLIBC2],

  [

    AC_CACHE_CHECK([whether we are using the GNU C Library 2 or newer],

      [ac_cv_gnu_library_2],

      [AC_EGREP_CPP([Lucky GNU user],

        [

#include <features.h>

#ifdef __GNU_LIBRARY__

 #if (__GLIBC__ >= 2) && !defined __UCLIBC__

  Lucky GNU user

 #endif

#endif

        ],

        [ac_cv_gnu_library_2=yes],

        [ac_cv_gnu_library_2=no])

      ]

    )

    AC_SUBST([GLIBC2])

    GLIBC2="$ac_cv_gnu_library_2"

  ]

)