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Last change
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gnu grep version 2.12 (grep-2.12.tar.xz, md5sum=8d2f0346d08b13c18afb81f0e8aa1e2f)
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| 1 | # glibc21.m4 serial 5
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| 2 | dnl Copyright (C) 2000-2002, 2004, 2008, 2010-2012 Free Software Foundation,
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| 3 | dnl Inc.
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| 4 | dnl This file is free software; the Free Software Foundation
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| 5 | dnl gives unlimited permission to copy and/or distribute it,
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| 6 | dnl with or without modifications, as long as this notice is preserved.
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| 7 |
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| 8 | # Test for the GNU C Library, version 2.1 or newer, or uClibc.
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| 9 | # From Bruno Haible.
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| 10 |
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| 11 | AC_DEFUN([gl_GLIBC21],
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| 12 | [
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| 13 | AC_CACHE_CHECK([whether we are using the GNU C Library >= 2.1 or uClibc],
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| 14 | [ac_cv_gnu_library_2_1],
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| 15 | [AC_EGREP_CPP([Lucky],
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| 16 | [
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| 17 | #include <features.h>
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| 18 | #ifdef __GNU_LIBRARY__
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| 19 | #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)
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| 20 | Lucky GNU user
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| 21 | #endif
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| 22 | #endif
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| 23 | #ifdef __UCLIBC__
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| 24 | Lucky user
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| 25 | #endif
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| 26 | ],
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| 27 | [ac_cv_gnu_library_2_1=yes],
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| 28 | [ac_cv_gnu_library_2_1=no])
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| 29 | ]
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| 30 | )
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| 31 | AC_SUBST([GLIBC21])
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| 32 | GLIBC21="$ac_cv_gnu_library_2_1"
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| 33 | ]
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| 34 | )
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