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| 1 | # glibc21.m4 serial 3
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| 2 | dnl Copyright (C) 2000-2002, 2004 Free Software Foundation, Inc.
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| 3 | dnl This file is free software, distributed under the terms of the GNU
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| 4 | dnl General Public License. As a special exception to the GNU General
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| 5 | dnl Public License, this file may be distributed as part of a program
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| 6 | dnl that contains a configuration script generated by Autoconf, under
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| 7 | dnl the same distribution terms as the rest of that program.
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| 8 |
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| 9 | # Test for the GNU C Library, version 2.1 or newer.
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| 10 | # From Bruno Haible.
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| 11 |
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| 12 | AC_DEFUN([gl_GLIBC21],
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| 13 | [
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| 14 | AC_CACHE_CHECK(whether we are using the GNU C Library 2.1 or newer,
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| 15 | ac_cv_gnu_library_2_1,
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| 16 | [AC_EGREP_CPP([Lucky GNU user],
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| 17 | [
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| 18 | #include <features.h>
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| 19 | #ifdef __GNU_LIBRARY__
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| 20 | #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)
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| 21 | Lucky GNU user
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| 22 | #endif
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| 23 | #endif
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| 24 | ],
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| 25 | ac_cv_gnu_library_2_1=yes,
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| 26 | ac_cv_gnu_library_2_1=no)
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| 27 | ]
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| 28 | )
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| 29 | AC_SUBST(GLIBC21)
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| 30 | GLIBC21="$ac_cv_gnu_library_2_1"
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| 31 | ]
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| 32 | )
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