| #--------------------------------------------------------------------------- |
| # |
| # xc-am-iface.m4 |
| # |
| # Copyright (C) Daniel Stenberg <daniel@haxx.se> |
| # |
| # Permission to use, copy, modify, and distribute this software for any |
| # purpose with or without fee is hereby granted, provided that the above |
| # copyright notice and this permission notice appear in all copies. |
| # |
| # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| # |
| # SPDX-License-Identifier: ISC |
| # |
| #--------------------------------------------------------------------------- |
| |
| # serial 1 |
| |
| |
| dnl _XC_AUTOMAKE_BODY |
| dnl ------------------------------------------------- |
| dnl Private macro. |
| dnl |
| dnl This macro performs embedding of automake initialization |
| dnl code into configure script. When automake version 1.14 or |
| dnl newer is used at configure script generation time, this |
| dnl results in 'subdir-objects' automake option being used. |
| dnl When using automake versions older than 1.14 this option |
| dnl is not used when generating configure script. |
| dnl |
| dnl Existence of automake _AM_PROG_CC_C_O m4 private macro |
| dnl is used to differentiate automake version 1.14 from older |
| dnl ones which lack this macro. |
| |
| m4_define([_XC_AUTOMAKE_BODY], |
| [dnl |
| ## --------------------------------------- ## |
| ## Start of automake initialization code ## |
| ## --------------------------------------- ## |
| m4_ifdef([_AM_PROG_CC_C_O], |
| [ |
| AM_INIT_AUTOMAKE([subdir-objects]) |
| ],[ |
| AM_INIT_AUTOMAKE |
| ])dnl |
| ## ------------------------------------- ## |
| ## End of automake initialization code ## |
| ## ------------------------------------- ## |
| dnl |
| m4_define([$0], [])[]dnl |
| ]) |
| |
| |
| dnl XC_AUTOMAKE |
| dnl ------------------------------------------------- |
| dnl Public macro. |
| dnl |
| dnl This macro embeds automake machinery into configure |
| dnl script regardless of automake version used in order |
| dnl to generate configure script. |
| dnl |
| dnl When using automake version 1.14 or newer, automake |
| dnl initialization option 'subdir-objects' is used to |
| dnl generate the configure script, otherwise this option |
| dnl is not used. |
| |
| AC_DEFUN([XC_AUTOMAKE], |
| [dnl |
| AC_PREREQ([2.50])dnl |
| dnl |
| AC_BEFORE([$0],[AM_INIT_AUTOMAKE])dnl |
| dnl |
| _XC_AUTOMAKE_BODY |
| dnl |
| m4_ifdef([AM_INIT_AUTOMAKE], |
| [m4_undefine([AM_INIT_AUTOMAKE])])dnl |
| dnl |
| m4_define([$0], [])[]dnl |
| ]) |