diff options
Diffstat (limited to 'tools/missing-macros/src/m4/glibc21.m4')
| -rw-r--r-- | tools/missing-macros/src/m4/glibc21.m4 | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/tools/missing-macros/src/m4/glibc21.m4 b/tools/missing-macros/src/m4/glibc21.m4 new file mode 100644 index 0000000000..68ada9d4d5 --- /dev/null +++ b/tools/missing-macros/src/m4/glibc21.m4 @@ -0,0 +1,30 @@ +# glibc21.m4 serial 4 +dnl Copyright (C) 2000-2002, 2004, 2008-2010 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +# 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" + ] +) |