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