-# serial 14
+# serial 15
dnl From Jim Meyering.
dnl A wrapper around AC_FUNC_GETGROUPS.
-# Copyright (C) 1996-1997, 1999-2004, 2008-2009 Free Software Foundation, Inc.
+# Copyright (C) 1996-1997, 1999-2004, 2008-2010 Free Software Foundation, Inc.
#
# This file is free software; the Free Software Foundation
# gives unlimited permission to copy and/or distribute it,
then
AC_LIBOBJ([getgroups])
REPLACE_GETGROUPS=1
+ AC_DEFINE([GETGROUPS_ZERO_BUG], [1], [Define this to 1 if
+ getgroups(0,NULL) does not return the number of groups.])
+ else
+ dnl Detect FreeBSD bug; POSIX requires getgroups(-1,ptr) to fail.
+ AC_CACHE_CHECK([whether getgroups handles negative values],
+ [gl_cv_func_getgroups_works],
+ [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT],
+ [[int size = getgroups (0, 0);
+ gid_t *list = malloc (size * sizeof *list);
+ return getgroups (-1, list) != -1;]])],
+ [gl_cv_func_getgroups_works=yes],
+ [gl_cv_func_getgroups_works=no],
+ [gl_cv_func_getgroups_works="guessing no"])])
+ if test "$gl_cv_func_getgroups_works" != yes; then
+ AC_LIBOBJ([getgroups])
+ REPLACE_GETGROUPS=1
+ fi
fi
test -n "$GETGROUPS_LIB" && LIBS="$GETGROUPS_LIB $LIBS"
])