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libiconv 1.16

    1: # glibc2.m4 serial 3
    2: dnl Copyright (C) 2000-2002, 2004, 2008, 2010-2019 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 2.0 or newer.
    9: # From Bruno Haible.
   10: 
   11: AC_DEFUN([gt_GLIBC2],
   12:   [
   13:     AC_CACHE_CHECK([whether we are using the GNU C Library 2 or newer],
   14:       [ac_cv_gnu_library_2],
   15:       [AC_EGREP_CPP([Lucky GNU user],
   16:         [
   17: #include <features.h>
   18: #ifdef __GNU_LIBRARY__
   19:  #if (__GLIBC__ >= 2) && !defined __UCLIBC__
   20:   Lucky GNU user
   21:  #endif
   22: #endif
   23:         ],
   24:         [ac_cv_gnu_library_2=yes],
   25:         [ac_cv_gnu_library_2=no])
   26:       ]
   27:     )
   28:     AC_SUBST([GLIBC2])
   29:     GLIBC2="$ac_cv_gnu_library_2"
   30:   ]
   31: )