Make 'autoreconf' work for 'gcc', 'libobjc' (was: [PATCH] regenerate configure files and config.h.in files)

[Thomas Schwinge <thomas@codesourcery.com>]

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Hi!

Given:

On 2022-09-20T14:42:53+0100, Iain Sandoe via Gcc-patches <gcc-patches@gcc.gnu.org> wrote:
> +1 from me …
> ..  I have been maintaining something similar locally.

On 2022-09-20T17:23:15+0200, Martin Liška <mliska@suse.cz> wrote:
> I do support that as well.

..., I have now pushed to master branch
commit 25861cf3a88a07c8dca3fb32d098c0ad756bbe38
"Make 'autoreconf' work for 'gcc', 'libobjc'", see attached.


> What will be the only command invocation that will be needed once you're done?

Just plain 'autoreconf' (per each relevant directory).  See
<https://gcc.gnu.org/wiki/Regenerating_GCC_Configuration#Regenerating_All_GNU_Autotools_Files>.


Grüße
 Thomas


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From 25861cf3a88a07c8dca3fb32d098c0ad756bbe38 Mon Sep 17 00:00:00 2001
From: Thomas Schwinge <thomas@codesourcery.com>
Date: Tue, 20 Sep 2022 14:27:05 +0200
Subject: [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 (AC_CONFIG_MACRO_DIRS): Instantiate.
	* configure: Regenerate.
	libobjc/
	* configure.ac (AC_CONFIG_MACRO_DIRS): Instantiate.
	* configure: Regenerate.
---
 gcc/configure        | 5 +++--
 gcc/configure.ac     | 1 +
 libobjc/configure    | 5 +++--
 libobjc/configure.ac | 1 +
 4 files changed, 8 insertions(+), 4 deletions(-)

diff --git a/gcc/configure b/gcc/configure
index 2ce51a8a458..c6def4c88e5 100755
--- a/gcc/configure
+++ b/gcc/configure
@@ -3333,6 +3333,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 
+
 ac_config_headers="$ac_config_headers auto-host.h:config.in"
 
 
@@ -19713,7 +19714,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 19716 "configure"
+#line 19717 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -19819,7 +19820,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 19822 "configure"
+#line 19823 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
diff --git a/gcc/configure.ac b/gcc/configure.ac
index e1ef2ecf026..45bf7560e6f 100644
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -25,6 +25,7 @@
 
 AC_INIT
 AC_CONFIG_SRCDIR(tree.cc)
+AC_CONFIG_MACRO_DIRS([../config] [..])
 AC_CONFIG_HEADER(auto-host.h:config.in)
 
 gcc_version=`cat $srcdir/BASE-VER`
diff --git a/libobjc/configure b/libobjc/configure
index a8fdc643349..6da20b8e4ff 100755
--- a/libobjc/configure
+++ b/libobjc/configure
@@ -2218,6 +2218,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu
 
 
 
+
 ac_aux_dir=
 for ac_dir in "$srcdir" "$srcdir/.." "$srcdir/../.."; do
   if test -f "$ac_dir/install-sh"; then
@@ -10795,7 +10796,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 10798 "configure"
+#line 10799 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -10901,7 +10902,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 10904 "configure"
+#line 10905 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
diff --git a/libobjc/configure.ac b/libobjc/configure.ac
index f8f577cfbef..6f58a45d4cb 100644
--- a/libobjc/configure.ac
+++ b/libobjc/configure.ac
@@ -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
-- 
2.35.1