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1 | # glibc2.m4 serial 3 |
2 | dnl Copyright (C) 2000-2002, 2004, 2008, 2010-2019 Free Software Foundation, | |
3 | dnl Inc. | |
4 | dnl This file is free software; the Free Software Foundation | |
5 | dnl gives unlimited permission to copy and/or distribute it, | |
6 | dnl with or without modifications, as long as this notice is preserved. | |
7 | ||
8 | # Test for the GNU C Library, version 2.0 or newer. | |
9 | # From Bruno Haible. | |
10 | ||
11 | AC_DEFUN([gt_GLIBC2], | |
12 | [ | |
13 | AC_CACHE_CHECK([whether we are using the GNU C Library 2 or newer], | |
14 | [ac_cv_gnu_library_2], | |
15 | [AC_EGREP_CPP([Lucky GNU user], | |
16 | [ | |
17 | #include <features.h> | |
18 | #ifdef __GNU_LIBRARY__ | |
19 | #if (__GLIBC__ >= 2) && !defined __UCLIBC__ | |
20 | Lucky GNU user | |
21 | #endif | |
22 | #endif | |
23 | ], | |
24 | [ac_cv_gnu_library_2=yes], | |
25 | [ac_cv_gnu_library_2=no]) | |
26 | ] | |
27 | ) | |
28 | AC_SUBST([GLIBC2]) | |
29 | GLIBC2="$ac_cv_gnu_library_2" | |
30 | ] | |
31 | ) |