libvirt/gnulib/m4/glibc2.m4

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# glibc2.m4 serial 1
dnl Copyright (C) 2000-2002, 2004 Free Software Foundation, 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)
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"
]
)