SPDX-FileCopyrightText: 2023 fosslinux <fosslinux@aussies.space>
SPDX-FileCopyrightText: 2022 Thomas Schwinge <thomas@codesourcery.com>  

SPDX-License-Identifier: GPL-3.0-or-later

Backport of commit 25861cf3a88a07c8dca3fb32d098c0ad756bbe38

====

[PATCH] Make 'autoreconf' work for 'gcc', 'libobjc'

With that, we may then run plain 'autoreconf' for all of GCC's subpackages,
instead of for some of those (that don't use Automake) manually having to run
the applicable combination of 'aclocal', 'autoconf', 'autoheader'.

See also 'AC_CONFIG_MACRO_DIRS'/'AC_CONFIG_MACRO_DIR' usage elsewhere.

--- gcc/configure.ac	2023-01-22 16:22:57.833166450 +1100
+++ gcc/configure.ac	2023-01-22 16:23:08.971274603 +1100
@@ -25,6 +25,7 @@
 
 AC_INIT
 AC_CONFIG_SRCDIR(tree.c)
+AC_CONFIG_MACRO_DIRS([../config] [..])
 AC_CONFIG_HEADER(auto-host.h:config.in)
 
 gcc_version=`cat $srcdir/BASE-VER`
--- libobjc/configure.ac	2023-01-22 16:23:42.648601085 +1100
+++ libobjc/configure.ac	2023-01-22 16:23:28.937468262 +1100
@@ -20,6 +20,7 @@
 
 AC_INIT(package-unused, version-unused,, libobjc)
 AC_CONFIG_SRCDIR([objc/objc.h])
+AC_CONFIG_MACRO_DIRS([../config] [..])
 GCC_TOPLEV_SUBDIRS
 
 # We need the following definitions because AC_PROG_LIBTOOL relies on them