audit: fix build with autoconf-2.73

On hosts with gcc-13 it was trying to use -std=gnu23 and failing
with unrecognized command-line option (gnu23 needs gcc-14 and newer)

Signed-off-by: Martin Jansa <martin.jansa@gmail.com>
Signed-off-by: Khem Raj <khem.raj@oss.qualcomm.com>
This commit is contained in:
Martin Jansa
2026-04-10 15:49:38 +02:00
committed by Khem Raj
parent da03a64bd7
commit a8e0bd4d84
2 changed files with 197 additions and 0 deletions
@@ -0,0 +1,196 @@
From 3da79b330527b5f9d6e6243c8ba12968810965a3 Mon Sep 17 00:00:00 2001
From: Martin Jansa <martin.jansa@gmail.com>
Date: Fri, 10 Apr 2026 14:53:41 +0200
Subject: [PATCH] m4: update ax_prog_cc_for_build.m4 to latest
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
After the autoconf update to 2.73 this was using -std=gnu23
even on hosts with gcc-13 which doesn't support it:
ac_cv_prog_ac_ct_CC_FOR_BUILD='gcc '
ac_cv_prog_cc_c23=-std=gnu23
ac_cv_prog_cc_g=yes
ac_cv_prog_cc_stdc=-std=gnu23
Leading to:
gcc -std=gnu23 -DHAVE_CONFIG_H -I. -I../../sources/audit-4.1.4/lib -I.. -I. -I../../sources/audit-4.1.4 -I../../sources/audit-4.1.4/auparse -I../../sources/audit-4.1.4/common -isystem/audit/4.1.4/recipe-sysroot-native/usr/include '-DTABLE_H="fieldtab.h"' -isystem/audit/4.1.4/recipe-sysroot-native/usr/include -O2 -pipe -c -o gen_fieldtabs_h-gen_tables.o `test -f 'gen_tables.c' || echo '../../sources/audit-4.1.4/lib/'`gen_tables.c
gcc: error: unrecognized command-line option ‘-std=gnu23’; did you mean ‘-std=gnu2x’?
Needs the updated ac_cv_prog_cc_c23 from:
https://github.com/autoconf-archive/autoconf-archive/commit/8a970ce96721f516fef4226e5eca8da341159765
Upstream-Status: Submitted [https://github.com/linux-audit/audit-userspace/pull/524]
Signed-off-by: Martin Jansa <martin.jansa@gmail.com>
---
m4/ax_prog_cc_for_build.m4 | 100 +++++++++++++++++++++++++++----------
1 file changed, 75 insertions(+), 25 deletions(-)
diff --git a/m4/ax_prog_cc_for_build.m4 b/m4/ax_prog_cc_for_build.m4
index 77fd346a..4d1de993 100644
--- a/m4/ax_prog_cc_for_build.m4
+++ b/m4/ax_prog_cc_for_build.m4
@@ -1,5 +1,5 @@
# ===========================================================================
-# http://www.gnu.org/software/autoconf-archive/ax_prog_cc_for_build.html
+# https://www.gnu.org/software/autoconf-archive/ax_prog_cc_for_build.html
# ===========================================================================
#
# SYNOPSIS
@@ -32,28 +32,32 @@
# and this notice are preserved. This file is offered as-is, without any
# warranty.
-#serial 8
+#serial 26
AU_ALIAS([AC_PROG_CC_FOR_BUILD], [AX_PROG_CC_FOR_BUILD])
AC_DEFUN([AX_PROG_CC_FOR_BUILD], [dnl
AC_REQUIRE([AC_PROG_CC])dnl
AC_REQUIRE([AC_PROG_CPP])dnl
-AC_REQUIRE([AC_EXEEXT])dnl
-AC_REQUIRE([AC_CANONICAL_HOST])dnl
+AC_REQUIRE([AC_CANONICAL_BUILD])dnl
dnl Use the standard macros, but make them use other variable names
dnl
pushdef([ac_cv_prog_CPP], ac_cv_build_prog_CPP)dnl
pushdef([ac_cv_prog_gcc], ac_cv_build_prog_gcc)dnl
+pushdef([ac_cv_prog_cc_c89], ac_cv_build_prog_cc_c89)dnl
+pushdef([ac_cv_prog_cc_c99], ac_cv_build_prog_cc_c99)dnl
+pushdef([ac_cv_prog_cc_c11], ac_cv_build_prog_cc_c11)dnl
+pushdef([ac_cv_prog_cc_c23], ac_cv_build_prog_cc_c23)dnl
+pushdef([ac_cv_prog_cc_stdc], ac_cv_build_prog_cc_stdc)dnl
pushdef([ac_cv_prog_cc_works], ac_cv_build_prog_cc_works)dnl
pushdef([ac_cv_prog_cc_cross], ac_cv_build_prog_cc_cross)dnl
pushdef([ac_cv_prog_cc_g], ac_cv_build_prog_cc_g)dnl
-pushdef([ac_cv_exeext], ac_cv_build_exeext)dnl
-pushdef([ac_cv_objext], ac_cv_build_objext)dnl
+pushdef([ac_prog_cc_stdc], ac_build_prog_cc_stdc)dnl
pushdef([ac_exeext], ac_build_exeext)dnl
pushdef([ac_objext], ac_build_objext)dnl
pushdef([CC], CC_FOR_BUILD)dnl
pushdef([CPP], CPP_FOR_BUILD)dnl
+pushdef([GCC], GCC_FOR_BUILD)dnl
pushdef([CFLAGS], CFLAGS_FOR_BUILD)dnl
pushdef([CPPFLAGS], CPPFLAGS_FOR_BUILD)dnl
pushdef([LDFLAGS], LDFLAGS_FOR_BUILD)dnl
@@ -67,27 +71,58 @@ pushdef([ac_cv_host_alias], ac_cv_build_alias)dnl
pushdef([ac_cv_host_cpu], ac_cv_build_cpu)dnl
pushdef([ac_cv_host_vendor], ac_cv_build_vendor)dnl
pushdef([ac_cv_host_os], ac_cv_build_os)dnl
-pushdef([ac_cpp], ac_build_cpp)dnl
-pushdef([ac_compile], ac_build_compile)dnl
-pushdef([ac_link], ac_build_link)dnl
+pushdef([ac_tool_prefix], ac_build_tool_prefix)dnl
+pushdef([am_cv_CC_dependencies_compiler_type], am_cv_build_CC_dependencies_compiler_type)dnl
+pushdef([am_cv_prog_cc_c_o], am_cv_build_prog_cc_c_o)dnl
+pushdef([cross_compiling], cross_compiling_build)dnl
+dnl
+dnl These variables are problematic to rename by M4 macros, so we save
+dnl their values in alternative names, and restore the values later.
+dnl
+dnl _AC_COMPILER_EXEEXT and _AC_COMPILER_OBJEXT internally call
+dnl AC_SUBST which prevents the renaming of EXEEXT and OBJEXT
+dnl variables. It's not a good idea to rename ac_cv_exeext and
+dnl ac_cv_objext either as they're related.
+dnl Renaming ac_exeext and ac_objext is safe though.
+dnl
+ac_cv_host_exeext=$ac_cv_exeext
+AS_VAR_SET_IF([ac_cv_build_exeext],
+ [ac_cv_exeext=$ac_cv_build_exeext],
+ [AS_UNSET([ac_cv_exeext])])
+ac_cv_host_objext=$ac_cv_objext
+AS_VAR_SET_IF([ac_cv_build_objext],
+ [ac_cv_objext=$ac_cv_build_objext],
+ [AS_UNSET([ac_cv_objext])])
+dnl
+dnl ac_cv_c_compiler_gnu is used in _AC_LANG_COMPILER_GNU (called by
+dnl AC_PROG_CC) indirectly.
+dnl
+ac_cv_host_c_compiler_gnu=$ac_cv_c_compiler_gnu
+AS_VAR_SET_IF([ac_cv_build_c_compiler_gnu],
+ [ac_cv_c_compiler_gnu=$ac_cv_build_c_compiler_gnu],
+ [AS_UNSET([ac_cv_c_compiler_gnu])])
+
+cross_compiling_build=no
-save_cross_compiling=$cross_compiling
-save_ac_tool_prefix=$ac_tool_prefix
-cross_compiling=no
-ac_tool_prefix=
+ac_build_tool_prefix=
+AS_IF([test -n "$build"], [ac_build_tool_prefix="$build-"],
+ [test -n "$build_alias"],[ac_build_tool_prefix="$build_alias-"])
+AC_LANG_PUSH([C])
AC_PROG_CC
+_AC_COMPILER_EXEEXT
+_AC_COMPILER_OBJEXT
AC_PROG_CPP
-AC_EXEEXT
-ac_tool_prefix=$save_ac_tool_prefix
-cross_compiling=$save_cross_compiling
+BUILD_EXEEXT=$ac_cv_exeext
+BUILD_OBJEXT=$ac_cv_objext
dnl Restore the old definitions
dnl
-popdef([ac_link])dnl
-popdef([ac_compile])dnl
-popdef([ac_cpp])dnl
+popdef([cross_compiling])dnl
+popdef([am_cv_prog_cc_c_o])dnl
+popdef([am_cv_CC_dependencies_compiler_type])dnl
+popdef([ac_tool_prefix])dnl
popdef([ac_cv_host_os])dnl
popdef([ac_cv_host_vendor])dnl
popdef([ac_cv_host_cpu])dnl
@@ -101,24 +136,39 @@ popdef([host])dnl
popdef([LDFLAGS])dnl
popdef([CPPFLAGS])dnl
popdef([CFLAGS])dnl
+popdef([GCC])dnl
popdef([CPP])dnl
popdef([CC])dnl
popdef([ac_objext])dnl
popdef([ac_exeext])dnl
-popdef([ac_cv_objext])dnl
-popdef([ac_cv_exeext])dnl
+popdef([ac_prog_cc_stdc])dnl
popdef([ac_cv_prog_cc_g])dnl
popdef([ac_cv_prog_cc_cross])dnl
popdef([ac_cv_prog_cc_works])dnl
+popdef([ac_cv_prog_cc_stdc])dnl
+popdef([ac_cv_prog_cc_c23])dnl
+popdef([ac_cv_prog_cc_c11])dnl
+popdef([ac_cv_prog_cc_c99])dnl
+popdef([ac_cv_prog_cc_c89])dnl
popdef([ac_cv_prog_gcc])dnl
popdef([ac_cv_prog_CPP])dnl
+dnl
+ac_cv_exeext=$ac_cv_host_exeext
+EXEEXT=$ac_cv_host_exeext
+ac_cv_objext=$ac_cv_host_objext
+OBJEXT=$ac_cv_host_objext
+ac_cv_c_compiler_gnu=$ac_cv_host_c_compiler_gnu
+ac_compiler_gnu=$ac_cv_host_c_compiler_gnu
+
+dnl restore global variables ac_ext, ac_cpp, ac_compile,
+dnl ac_link, ac_compiler_gnu (dependent on the current
+dnl language after popping):
+AC_LANG_POP([C])
dnl Finally, set Makefile variables
dnl
-BUILD_EXEEXT=$ac_build_exeext
-BUILD_OBJEXT=$ac_build_objext
-AC_SUBST(BUILD_EXEEXT)dnl
-AC_SUBST(BUILD_OBJEXT)dnl
+AC_SUBST([BUILD_EXEEXT])dnl
+AC_SUBST([BUILD_OBJEXT])dnl
AC_SUBST([CFLAGS_FOR_BUILD])dnl
AC_SUBST([CPPFLAGS_FOR_BUILD])dnl
AC_SUBST([LDFLAGS_FOR_BUILD])dnl
@@ -9,6 +9,7 @@ LIC_FILES_CHKSUM = "file://COPYING;md5=94d55d512a9ba36caa9b7df079bae19f"
SRC_URI = "git://github.com/linux-audit/${BPN}-userspace.git;branch=master;protocol=https;tag=v${PV} \
file://0001-Fixed-swig-host-contamination-issue.patch \
file://0001-m4-update-ax_prog_cc_for_build.m4-to-latest.patch \
file://auditd \
"