xc-am-iface.m4 (2680B)
1 #--------------------------------------------------------------------------- 2 # 3 # xc-am-iface.m4 4 # 5 # Copyright (C) Daniel Stenberg, <daniel@haxx.se> 6 # 7 # Permission to use, copy, modify, and distribute this software for any 8 # purpose with or without fee is hereby granted, provided that the above 9 # copyright notice and this permission notice appear in all copies. 10 # 11 # THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 # WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 # ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 # OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 # 19 # SPDX-License-Identifier: ISC 20 # 21 #--------------------------------------------------------------------------- 22 23 # serial 1 24 25 26 dnl _XC_AUTOMAKE_BODY 27 dnl ------------------------------------------------- 28 dnl Private macro. 29 dnl 30 dnl This macro performs embedding of automake initialization 31 dnl code into configure script. When automake version 1.14 or 32 dnl newer is used at configure script generation time, this 33 dnl results in 'subdir-objects' automake option being used. 34 dnl When using automake versions older than 1.14 this option 35 dnl is not used when generating configure script. 36 dnl 37 dnl Existence of automake _AM_PROG_CC_C_O m4 private macro 38 dnl is used to differentiate automake version 1.14 from older 39 dnl ones which lack this macro. 40 41 m4_define([_XC_AUTOMAKE_BODY], 42 [dnl 43 ## --------------------------------------- ## 44 ## Start of automake initialization code ## 45 ## --------------------------------------- ## 46 m4_ifdef([_AM_PROG_CC_C_O], 47 [ 48 AM_INIT_AUTOMAKE([subdir-objects]) 49 ],[ 50 AM_INIT_AUTOMAKE 51 ])dnl 52 ## ------------------------------------- ## 53 ## End of automake initialization code ## 54 ## ------------------------------------- ## 55 dnl 56 m4_define([$0], [])[]dnl 57 ]) 58 59 60 dnl XC_AUTOMAKE 61 dnl ------------------------------------------------- 62 dnl Public macro. 63 dnl 64 dnl This macro embeds automake machinery into configure 65 dnl script regardless of automake version used in order 66 dnl to generate configure script. 67 dnl 68 dnl When using automake version 1.14 or newer, automake 69 dnl initialization option 'subdir-objects' is used to 70 dnl generate the configure script, otherwise this option 71 dnl is not used. 72 73 AC_DEFUN([XC_AUTOMAKE], 74 [dnl 75 AC_PREREQ([2.50])dnl 76 dnl 77 AC_BEFORE([$0],[AM_INIT_AUTOMAKE])dnl 78 dnl 79 _XC_AUTOMAKE_BODY 80 dnl 81 m4_ifdef([AM_INIT_AUTOMAKE], 82 [m4_undefine([AM_INIT_AUTOMAKE])])dnl 83 dnl 84 m4_define([$0], [])[]dnl 85 ])