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Diffstat (limited to 'm4/glibc21.m4')
-rw-r--r-- | m4/glibc21.m4 | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/m4/glibc21.m4 b/m4/glibc21.m4 new file mode 100644 index 0000000..ab58b71 --- /dev/null +++ b/m4/glibc21.m4 | |||
@@ -0,0 +1,34 @@ | |||
1 | # glibc21.m4 serial 5 | ||
2 | dnl Copyright (C) 2000-2002, 2004, 2008, 2010-2014 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 2.1 or newer, or uClibc. | ||
9 | # From Bruno Haible. | ||
10 | |||
11 | AC_DEFUN([gl_GLIBC21], | ||
12 | [ | ||
13 | AC_CACHE_CHECK([whether we are using the GNU C Library >= 2.1 or uClibc], | ||
14 | [ac_cv_gnu_library_2_1], | ||
15 | [AC_EGREP_CPP([Lucky], | ||
16 | [ | ||
17 | #include <features.h> | ||
18 | #ifdef __GNU_LIBRARY__ | ||
19 | #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2) | ||
20 | Lucky GNU user | ||
21 | #endif | ||
22 | #endif | ||
23 | #ifdef __UCLIBC__ | ||
24 | Lucky user | ||
25 | #endif | ||
26 | ], | ||
27 | [ac_cv_gnu_library_2_1=yes], | ||
28 | [ac_cv_gnu_library_2_1=no]) | ||
29 | ] | ||
30 | ) | ||
31 | AC_SUBST([GLIBC21]) | ||
32 | GLIBC21="$ac_cv_gnu_library_2_1" | ||
33 | ] | ||
34 | ) | ||