0N/A# glibc21.m4 serial 4

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0N/Adnl This file is free software; the Free Software Foundation

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# Test for the GNU C Library, version 2.1 or newer.

# From Bruno Haible.

AC_DEFUN([gl_GLIBC21],

[

AC_CACHE_CHECK([whether we are using the GNU C Library 2.1 or newer],

[ac_cv_gnu_library_2_1],

[AC_EGREP_CPP([Lucky GNU user],

[

#include <features.h>

#ifdef __GNU_LIBRARY__

#if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)

Lucky GNU user

#endif

#endif

],

[ac_cv_gnu_library_2_1=yes],

[ac_cv_gnu_library_2_1=no])

]

)

AC_SUBST([GLIBC21])

GLIBC21="$ac_cv_gnu_library_2_1"

]

)