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m4/glibc2.m4

 

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# glibc2.m4 serial 2

 

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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 2.0 or newer.

 

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# From Bruno Haible.

 

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AC_DEFUN([gt_GLIBC2],

 

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  [

 

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    AC_CACHE_CHECK([whether we are using the GNU C Library 2 or newer],

 

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      [ac_cv_gnu_library_2],

 

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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)

 

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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=yes],

 

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        [ac_cv_gnu_library_2=no])

 

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      ]

 

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    )

 

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    AC_SUBST([GLIBC2])

 

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    GLIBC2="$ac_cv_gnu_library_2"

 

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  ]

 

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)

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