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7f8e40b7 | 1 | # glibc21.m4 serial 4 |
61cd9dc9 | 2 | dnl Copyright (C) 2000-2002, 2004, 2008-2010 Free Software Foundation, Inc. |
7f8e40b7 NJ |
3 | dnl This file is free software; the Free Software Foundation |
4 | dnl gives unlimited permission to copy and/or distribute it, | |
5 | dnl with or without modifications, as long as this notice is preserved. | |
6 | ||
7 | # Test for the GNU C Library, version 2.1 or newer. | |
8 | # From Bruno Haible. | |
9 | ||
10 | AC_DEFUN([gl_GLIBC21], | |
11 | [ | |
12 | AC_CACHE_CHECK([whether we are using the GNU C Library 2.1 or newer], | |
13 | [ac_cv_gnu_library_2_1], | |
14 | [AC_EGREP_CPP([Lucky GNU user], | |
1cd4fffc | 15 | [ |
7f8e40b7 NJ |
16 | #include <features.h> |
17 | #ifdef __GNU_LIBRARY__ | |
18 | #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2) | |
19 | Lucky GNU user | |
20 | #endif | |
21 | #endif | |
1cd4fffc LC |
22 | ], |
23 | [ac_cv_gnu_library_2_1=yes], | |
24 | [ac_cv_gnu_library_2_1=no]) | |
7f8e40b7 NJ |
25 | ] |
26 | ) | |
27 | AC_SUBST([GLIBC21]) | |
28 | GLIBC21="$ac_cv_gnu_library_2_1" | |
29 | ] | |
30 | ) |