buildconf warning with autoconf 2.71

[nikic]

Description

Running ./buildconf with autoconf 2.71 (Ubuntu 22.04) results in a slew of warnings:

buildconf: Checking installation
buildconf: autoconf version 2.71 (ok)
buildconf: Cleaning cache and configure files
buildconf: Rebuilding configure
configure.ac:131: warning: The macro `AC_PROG_CC_C99' is obsolete.
configure.ac:131: You should run autoupdate.
./lib/autoconf/c.m4:1659: AC_PROG_CC_C99 is expanded from...
configure.ac:131: the top level
configure.ac:1565: warning: The macro `AC_LANG_C' is obsolete.
configure.ac:1565: You should run autoupdate.
./lib/autoconf/c.m4:72: AC_LANG_C is expanded from...
build/libtool.m4:2739: _LT_AC_LANG_C_CONFIG is expanded from...
build/libtool.m4:2738: AC_LIBTOOL_LANG_C_CONFIG is expanded from...
build/libtool.m4:70: AC_LIBTOOL_SETUP is expanded from...
build/libtool.m4:52: _AC_PROG_LIBTOOL is expanded from...
build/libtool.m4:39: AC_PROG_LIBTOOL is expanded from...
configure.ac:1565: the top level
configure.ac:1565: warning: The macro `AC_LANG_C' is obsolete.
configure.ac:1565: You should run autoupdate.
./lib/autoconf/c.m4:72: AC_LANG_C is expanded from...
lib/m4sugar/m4sh.m4:692: _AS_IF_ELSE is expanded from...
lib/m4sugar/m4sh.m4:699: AS_IF is expanded from...
./lib/autoconf/general.m4:2249: AC_CACHE_VAL is expanded from...
./lib/autoconf/general.m4:2270: AC_CACHE_CHECK is expanded from...
build/libtool.m4:561: _LT_AC_LOCK is expanded from...
build/libtool.m4:1185: AC_LIBTOOL_SYS_HARD_LINK_LOCKS is expanded from...
build/libtool.m4:2739: _LT_AC_LANG_C_CONFIG is expanded from...
build/libtool.m4:2738: AC_LIBTOOL_LANG_C_CONFIG is expanded from...
build/libtool.m4:70: AC_LIBTOOL_SETUP is expanded from...
build/libtool.m4:52: _AC_PROG_LIBTOOL is expanded from...
build/libtool.m4:39: AC_PROG_LIBTOOL is expanded from...
configure.ac:1565: the top level
configure.ac:1565: warning: The macro `AC_TRY_LINK' is obsolete.
configure.ac:1565: You should run autoupdate.
./lib/autoconf/general.m4:2920: AC_TRY_LINK is expanded from...
lib/m4sugar/m4sh.m4:692: _AS_IF_ELSE is expanded from...
lib/m4sugar/m4sh.m4:699: AS_IF is expanded from...
./lib/autoconf/general.m4:2249: AC_CACHE_VAL is expanded from...
./lib/autoconf/general.m4:2270: AC_CACHE_CHECK is expanded from...
build/libtool.m4:561: _LT_AC_LOCK is expanded from...
build/libtool.m4:1185: AC_LIBTOOL_SYS_HARD_LINK_LOCKS is expanded from...
build/libtool.m4:2739: _LT_AC_LANG_C_CONFIG is expanded from...
build/libtool.m4:2738: AC_LIBTOOL_LANG_C_CONFIG is expanded from...
build/libtool.m4:70: AC_LIBTOOL_SETUP is expanded from...
build/libtool.m4:52: _AC_PROG_LIBTOOL is expanded from...
build/libtool.m4:39: AC_PROG_LIBTOOL is expanded from...
configure.ac:1565: the top level
configure.ac:1565: warning: back quotes and double quotes must not be escaped in: $as_me:${as_lineno-$LINENO}: WARNING: \`$CC' does not support \`-c -o', so \`make -j' may be unsafe
build/libtool.m4:1185: AC_LIBTOOL_SYS_HARD_LINK_LOCKS is expanded from...
build/libtool.m4:2739: _LT_AC_LANG_C_CONFIG is expanded from...
build/libtool.m4:2738: AC_LIBTOOL_LANG_C_CONFIG is expanded from...
build/libtool.m4:70: AC_LIBTOOL_SETUP is expanded from...
build/libtool.m4:52: _AC_PROG_LIBTOOL is expanded from...
build/libtool.m4:39: AC_PROG_LIBTOOL is expanded from...
configure.ac:1565: the top level
configure.ac:1565: warning: back quotes and double quotes must not be escaped in: $as_me: WARNING: \`$CC' does not support \`-c -o', so \`make -j' may be unsafe
build/libtool.m4:1185: AC_LIBTOOL_SYS_HARD_LINK_LOCKS is expanded from...
build/libtool.m4:2739: _LT_AC_LANG_C_CONFIG is expanded from...
build/libtool.m4:2738: AC_LIBTOOL_LANG_C_CONFIG is expanded from...
build/libtool.m4:70: AC_LIBTOOL_SETUP is expanded from...
build/libtool.m4:52: _AC_PROG_LIBTOOL is expanded from...
build/libtool.m4:39: AC_PROG_LIBTOOL is expanded from...
configure.ac:1565: the top level
configure.ac:1565: warning: back quotes and double quotes must not be escaped in: $as_me:${as_lineno-$LINENO}: WARNING: output file \`$ofile' does not exist
build/libtool.m4:1929: _LT_AC_TAGCONFIG is expanded from...
build/libtool.m4:70: AC_LIBTOOL_SETUP is expanded from...
build/libtool.m4:52: _AC_PROG_LIBTOOL is expanded from...
build/libtool.m4:39: AC_PROG_LIBTOOL is expanded from...
configure.ac:1565: the top level
configure.ac:1565: warning: back quotes and double quotes must not be escaped in: $as_me: WARNING: output file \`$ofile' does not exist
build/libtool.m4:1929: _LT_AC_TAGCONFIG is expanded from...
build/libtool.m4:70: AC_LIBTOOL_SETUP is expanded from...
build/libtool.m4:52: _AC_PROG_LIBTOOL is expanded from...
build/libtool.m4:39: AC_PROG_LIBTOOL is expanded from...
configure.ac:1565: the top level
configure.ac:1565: warning: back quotes and double quotes must not be escaped in: $as_me:${as_lineno-$LINENO}: WARNING: output file \`$ofile' does not look like a libtool script
build/libtool.m4:1929: _LT_AC_TAGCONFIG is expanded from...
build/libtool.m4:70: AC_LIBTOOL_SETUP is expanded from...
build/libtool.m4:52: _AC_PROG_LIBTOOL is expanded from...
build/libtool.m4:39: AC_PROG_LIBTOOL is expanded from...
configure.ac:1565: the top level
configure.ac:1565: warning: back quotes and double quotes must not be escaped in: $as_me: WARNING: output file \`$ofile' does not look like a libtool script
build/libtool.m4:1929: _LT_AC_TAGCONFIG is expanded from...
build/libtool.m4:70: AC_LIBTOOL_SETUP is expanded from...
build/libtool.m4:52: _AC_PROG_LIBTOOL is expanded from...
build/libtool.m4:39: AC_PROG_LIBTOOL is expanded from...
configure.ac:1565: the top level
configure.ac:1565: warning: back quotes and double quotes must not be escaped in: $as_me:${as_lineno-$LINENO}: WARNING: using \`LTCC=$LTCC', extracted from \`$ofile'
build/libtool.m4:1929: _LT_AC_TAGCONFIG is expanded from...
build/libtool.m4:70: AC_LIBTOOL_SETUP is expanded from...
build/libtool.m4:52: _AC_PROG_LIBTOOL is expanded from...
build/libtool.m4:39: AC_PROG_LIBTOOL is expanded from...
configure.ac:1565: the top level
configure.ac:1565: warning: back quotes and double quotes must not be escaped in: $as_me: WARNING: using \`LTCC=$LTCC', extracted from \`$ofile'
build/libtool.m4:1929: _LT_AC_TAGCONFIG is expanded from...
build/libtool.m4:70: AC_LIBTOOL_SETUP is expanded from...
build/libtool.m4:52: _AC_PROG_LIBTOOL is expanded from...
build/libtool.m4:39: AC_PROG_LIBTOOL is expanded from...
configure.ac:1565: the top level
configure.ac:1565: warning: back quotes and double quotes must not be escaped in: tag name \"$tagname\" already exists
build/libtool.m4:1929: _LT_AC_TAGCONFIG is expanded from...
build/libtool.m4:70: AC_LIBTOOL_SETUP is expanded from...
build/libtool.m4:52: _AC_PROG_LIBTOOL is expanded from...
build/libtool.m4:39: AC_PROG_LIBTOOL is expanded from...
configure.ac:1565: the top level
configure.ac:1565: warning: The macro `AC_LANG_CPLUSPLUS' is obsolete.
configure.ac:1565: You should run autoupdate.
./lib/autoconf/c.m4:262: AC_LANG_CPLUSPLUS is expanded from...
build/libtool.m4:2821: _LT_AC_LANG_CXX_CONFIG is expanded from...
build/libtool.m4:2820: AC_LIBTOOL_LANG_CXX_CONFIG is expanded from...
build/libtool.m4:1929: _LT_AC_TAGCONFIG is expanded from...
build/libtool.m4:70: AC_LIBTOOL_SETUP is expanded from...
build/libtool.m4:52: _AC_PROG_LIBTOOL is expanded from...
build/libtool.m4:39: AC_PROG_LIBTOOL is expanded from...
configure.ac:1565: the top level
configure.ac:1565: warning: back quotes and double quotes must not be escaped in: $as_me:${as_lineno-$LINENO}: WARNING: \`$CC' does not support \`-c -o', so \`make -j' may be unsafe
build/libtool.m4:1185: AC_LIBTOOL_SYS_HARD_LINK_LOCKS is expanded from...
build/libtool.m4:2821: _LT_AC_LANG_CXX_CONFIG is expanded from...
build/libtool.m4:2820: AC_LIBTOOL_LANG_CXX_CONFIG is expanded from...
build/libtool.m4:1929: _LT_AC_TAGCONFIG is expanded from...
build/libtool.m4:70: AC_LIBTOOL_SETUP is expanded from...
build/libtool.m4:52: _AC_PROG_LIBTOOL is expanded from...
build/libtool.m4:39: AC_PROG_LIBTOOL is expanded from...
configure.ac:1565: the top level
configure.ac:1565: warning: back quotes and double quotes must not be escaped in: $as_me: WARNING: \`$CC' does not support \`-c -o', so \`make -j' may be unsafe
build/libtool.m4:1185: AC_LIBTOOL_SYS_HARD_LINK_LOCKS is expanded from...
build/libtool.m4:2821: _LT_AC_LANG_CXX_CONFIG is expanded from...
build/libtool.m4:2820: AC_LIBTOOL_LANG_CXX_CONFIG is expanded from...
build/libtool.m4:1929: _LT_AC_TAGCONFIG is expanded from...
build/libtool.m4:70: AC_LIBTOOL_SETUP is expanded from...
build/libtool.m4:52: _AC_PROG_LIBTOOL is expanded from...
build/libtool.m4:39: AC_PROG_LIBTOOL is expanded from...
configure.ac:1565: the top level
buildconf: Rebuilding main/php_config.h.in
buildconf: Run ./configure to proceed with customizing the PHP build.

PHP Version

PHP 8.3

Operating System

Ubuntu 22.04

[nikic]

Looks like everything apart from AC_PROG_CC_C99 is part of libtool.m4.

[Girgias]

#8514 was an attempt to deal with this IIRC

[andypost]

Please cherry-pick both commits to 8.2 at least as after packaging (for Alpinelinux) this errors pollute logs of every build of PECL packages