| #*************************************************************************** | |
| # _ _ ____ _ | |
| # Project ___| | | | _ \| | | |
| # / __| | | | |_) | | | |
| # | (__| |_| | _ <| |___ | |
| # \___|\___/|_| \_\_____| | |
| # | |
| # Copyright (C) Daniel Stenberg, <[email protected]>, et al. | |
| # | |
| # This software is licensed as described in the file COPYING, which | |
| # you should have received as part of this distribution. The terms | |
| # are also available at https://curl.se/docs/copyright.html. | |
| # | |
| # You may opt to use, copy, modify, merge, publish, distribute and/or sell | |
| # copies of the Software, and permit persons to whom the Software is | |
| # furnished to do so, under the terms of the COPYING file. | |
| # | |
| # This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY | |
| # KIND, either express or implied. | |
| # | |
| # SPDX-License-Identifier: curl | |
| # | |
| ########################################################################### | |
| #*************************************************************************** | |
| #*************************************************************************** | |
| # File version for 'aclocal' use. Keep it a single number. | |
| # serial 7 | |
| dnl CURL_OVERRIDE_AUTOCONF | |
| dnl ------------------------------------------------- | |
| dnl Placing a call to this macro in configure.ac after | |
| dnl the one to AC_INIT will make macros in this file | |
| dnl visible to the rest of the compilation overriding | |
| dnl those from Autoconf. | |
| AC_DEFUN([CURL_OVERRIDE_AUTOCONF], [ | |
| AC_BEFORE([$0],[AC_PROG_LIBTOOL]) | |
| # using curl-override.m4 | |
| ]) | |
| dnl Override Autoconf's AC_LANG_PROGRAM (C) | |
| dnl ------------------------------------------------- | |
| dnl This is done to prevent compiler warning | |
| dnl 'function declaration isn't a prototype' | |
| dnl in function main. This requires at least | |
| dnl a C89 compiler and does not support K&R. | |
| m4_define([AC_LANG_PROGRAM(C)], | |
| [$1 | |
| int main(void) | |
| { | |
| $2 | |
| ; | |
| return 0; | |
| }]) | |
| dnl Override Autoconf's AC_LANG_CALL (C) | |
| dnl ------------------------------------------------- | |
| dnl This is a backport of Autoconf's 2.60 with the | |
| dnl embedded comments that hit the resulting script | |
| dnl removed. This is done to reduce configure size | |
| dnl and use fixed macro across Autoconf versions. | |
| m4_define([AC_LANG_CALL(C)], | |
| [AC_LANG_PROGRAM([$1 | |
| m4_if([$2], [main], , | |
| [ | |
| #ifdef __cplusplus | |
| extern "C" | |
| #endif | |
| char $2 ();])], [return $2 ();])]) | |
| dnl Override Autoconf's AC_LANG_FUNC_LINK_TRY (C) | |
| dnl ------------------------------------------------- | |
| dnl This is a backport of Autoconf's 2.60 with the | |
| dnl embedded comments that hit the resulting script | |
| dnl removed. This is done to reduce configure size | |
| dnl and use fixed macro across Autoconf versions. | |
| m4_define([AC_LANG_FUNC_LINK_TRY(C)], | |
| [AC_LANG_PROGRAM( | |
| [ | |
| #define $1 innocuous_$1 | |
| #ifdef __STDC__ | |
| # include <limits.h> | |
| #else | |
| # include <assert.h> | |
| #endif | |
| #undef $1 | |
| #ifdef __cplusplus | |
| extern "C" | |
| #endif | |
| char $1 (); | |
| #if defined __stub_$1 || defined __stub___$1 | |
| #error force compilation error | |
| #endif | |
| ], [return $1 ();])]) | |