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# glibc21.m4 serial 4 |
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dnl Copyright (C) 2000-2002, 2004, 2008-2010 Free Software Foundation, Inc. |
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dnl This file is free software; the Free Software Foundation |
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dnl gives unlimited permission to copy and/or distribute it, |
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dnl with or without modifications, as long as this notice is preserved. |
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# Test for the GNU C Library, version 2.1 or newer. |
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# From Bruno Haible. |
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AC_DEFUN([gl_GLIBC21], |
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[ |
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AC_CACHE_CHECK([whether we are using the GNU C Library 2.1 or newer], |
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[ac_cv_gnu_library_2_1], |
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[AC_EGREP_CPP([Lucky GNU user], |
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[ |
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#include <features.h> |
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#ifdef __GNU_LIBRARY__ |
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#if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2) |
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Lucky GNU user |
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#endif |
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#endif |
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], |
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[ac_cv_gnu_library_2_1=yes], |
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[ac_cv_gnu_library_2_1=no]) |
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] |
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) |
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AC_SUBST([GLIBC21]) |
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GLIBC21="$ac_cv_gnu_library_2_1" |
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] |
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) |
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