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#serial 5
dnl From Jim Meyering.
dnl
dnl Invoking code should check $GETGROUPS_LIB something like this:
dnl jm_FUNC_GETGROUPS
dnl test -n "$GETGROUPS_LIB" && LIBS="$GETGROUPS_LIB $LIBS"
dnl
AC_DEFUN([jm_FUNC_GETGROUPS],
[AC_REQUIRE([AC_TYPE_GETGROUPS])dnl
AC_REQUIRE([AC_TYPE_SIZE_T])dnl
AC_CHECK_FUNCS(getgroups)
# If we don't yet have getgroups, see if it's in -lbsd.
# This is reported to be necessary on an ITOS 3000WS running SEIUX 3.1.
if test $ac_cv_func_getgroups = no; then
jm_cv_sys_getgroups_saved_lib="$LIBS"
AC_CHECK_LIB(bsd, getgroups, [GETGROUPS_LIB=-lbsd])
LIBS="$jm_cv_sys_getgroups_saved_lib"
fi
# Run the program to test the functionality of the system-supplied
# getgroups function only if there is such a function.
if test $ac_cv_func_getgroups = yes; then
AC_CACHE_CHECK([for working getgroups], jm_cv_func_working_getgroups,
[AC_TRY_RUN([
int
main ()
{
/* On Ultrix 4.3, getgroups (0, 0) always fails. */
exit (getgroups (0, 0) == -1 ? 1 : 0);
}
],
jm_cv_func_working_getgroups=yes,
jm_cv_func_working_getgroups=no,
dnl When crosscompiling, assume getgroups is broken.
jm_cv_func_working_getgroups=no)
])
if test $jm_cv_func_working_getgroups = no; then
AC_LIBOBJ(getgroups)
AC_DEFINE(getgroups, rpl_getgroups,
[Define as rpl_getgroups if getgroups doesn't work right.])
fi
fi
])
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