| # glibc21.m4 serial 5 |
| dnl Copyright (C) 2000-2002, 2004, 2008, 2010-2012 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" |
| ] |
| ) |
