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- # glibc21.m4 serial 5
- dnl Copyright (C) 2000-2002, 2004, 2008, 2010-2014 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 2.1 or newer, or uClibc.
- # From Bruno Haible.
- AC_DEFUN([gl_GLIBC21],
- [
- AC_CACHE_CHECK([whether we are using the GNU C Library >= 2.1 or uClibc],
- [ac_cv_gnu_library_2_1],
- [AC_EGREP_CPP([Lucky],
- [
- #include <features.h>
- #ifdef __GNU_LIBRARY__
- #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)
- Lucky GNU user
- #endif
- #endif
- #ifdef __UCLIBC__
- Lucky user
- #endif
- ],
- [ac_cv_gnu_library_2_1=yes],
- [ac_cv_gnu_library_2_1=no])
- ]
- )
- AC_SUBST([GLIBC21])
- GLIBC21="$ac_cv_gnu_library_2_1"
- ]
- )
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