Mercurial > gnulib
view m4/getgroups.m4 @ 40177:dcd889592b62
dtoastr,ftoastr,ldtoastr: port to c-strtod changes
Decouple these modules from c-strtod. Nowadays it’s reasonable to
assume the C99 signatures for strtod and strtold. Programs that
require stricter adherence to C99 should also use the strtod and
strtold modules as needed, and we no longer need the
HAVE_C99_STRTOLD macro.
* NEWS: Mention this.
* lib/ftoastr.c (STRTOF) [LENGTH == 3]: Assume strtold.
* m4/c-strtod.m4 (gl_C_STRTOLD): Do not define HAVE_C99_STRTOLD.
* modules/dtoastr, modules/ftoastr, modules/ldtoastr:
(Files): Remove m4/c-strtod.m4.
(configure.ac): Do not require gl_C99_STRTOLD, which no longer
exists.
author | Paul Eggert <eggert@cs.ucla.edu> |
---|---|
date | Sat, 02 Feb 2019 13:01:55 -0800 |
parents | b06060465f09 |
children |
line wrap: on
line source
# serial 21 dnl From Jim Meyering. dnl A wrapper around AC_FUNC_GETGROUPS. # Copyright (C) 1996-1997, 1999-2004, 2008-2019 Free Software Foundation, Inc. # # This file is free software; the Free Software Foundation # gives unlimited permission to copy and/or distribute it, # with or without modifications, as long as this notice is preserved. m4_version_prereq([2.70], [] ,[ # This is taken from the following Autoconf patch: # https://git.savannah.gnu.org/gitweb/?p=autoconf.git;a=commitdiff;h=7fbb553727ed7e0e689a17594b58559ecf3ea6e9 AC_DEFUN([AC_FUNC_GETGROUPS], [ AC_REQUIRE([AC_TYPE_GETGROUPS])dnl AC_REQUIRE([AC_TYPE_SIZE_T])dnl AC_REQUIRE([AC_CANONICAL_HOST])dnl for cross-compiles AC_CHECK_FUNC([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. ac_save_LIBS=$LIBS if test $ac_cv_func_getgroups = no; then AC_CHECK_LIB(bsd, getgroups, [GETGROUPS_LIB=-lbsd]) fi # Run the program to test the functionality of the system-supplied # getgroups function only if there is such a function. if test $ac_cv_func_getgroups = yes; then AC_CACHE_CHECK([for working getgroups], [ac_cv_func_getgroups_works], [AC_RUN_IFELSE( [AC_LANG_PROGRAM( [AC_INCLUDES_DEFAULT], [[/* On NeXTstep 3.2, getgroups (0, 0) always fails. */ return getgroups (0, 0) == -1;]]) ], [ac_cv_func_getgroups_works=yes], [ac_cv_func_getgroups_works=no], [case "$host_os" in # (( # Guess yes on glibc systems. *-gnu* | gnu*) ac_cv_func_getgroups_works="guessing yes" ;; # If we don't know, assume the worst. *) ac_cv_func_getgroups_works="guessing no" ;; esac ]) ]) else ac_cv_func_getgroups_works=no fi case "$ac_cv_func_getgroups_works" in *yes) AC_DEFINE([HAVE_GETGROUPS], [1], [Define to 1 if your system has a working `getgroups' function.]) ;; esac LIBS=$ac_save_LIBS ])# AC_FUNC_GETGROUPS ]) AC_DEFUN([gl_FUNC_GETGROUPS], [ AC_REQUIRE([AC_TYPE_GETGROUPS]) AC_REQUIRE([gl_UNISTD_H_DEFAULTS]) AC_REQUIRE([AC_CANONICAL_HOST]) dnl for cross-compiles AC_FUNC_GETGROUPS if test $ac_cv_func_getgroups != yes; then HAVE_GETGROUPS=0 else if test "$ac_cv_type_getgroups" != gid_t \ || { case "$ac_cv_func_getgroups_works" in *yes) false;; *) true;; esac }; then REPLACE_GETGROUPS=1 AC_DEFINE([GETGROUPS_ZERO_BUG], [1], [Define this to 1 if getgroups(0,NULL) does not return the number of groups.]) else dnl Detect FreeBSD bug; POSIX requires getgroups(-1,ptr) to fail. AC_CACHE_CHECK([whether getgroups handles negative values], [gl_cv_func_getgroups_works], [AC_RUN_IFELSE([AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT], [[int size = getgroups (0, 0); gid_t *list = malloc (size * sizeof *list); int result = getgroups (-1, list) != -1; free (list); return result;]])], [gl_cv_func_getgroups_works=yes], [gl_cv_func_getgroups_works=no], [case "$host_os" in # Guess yes on glibc systems. *-gnu* | gnu*) gl_cv_func_getgroups_works="guessing yes" ;; # If we don't know, assume the worst. *) gl_cv_func_getgroups_works="guessing no" ;; esac ])]) case "$gl_cv_func_getgroups_works" in *yes) ;; *) REPLACE_GETGROUPS=1 ;; esac fi fi test -n "$GETGROUPS_LIB" && LIBS="$GETGROUPS_LIB $LIBS" ])