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| 1 # glibc21.m4 serial 5 |
| 2 dnl Copyright (C) 2000-2002, 2004, 2008, 2010-2012 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 ) |
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