[3.8] gh-112160: Add 'regen-configure' make target (#112167)

.github/workflows/build.yml

@@ -76,6 +76,19 @@ jobs:
       - uses: actions/setup-python@v4
       - name: Install Dependencies
         run: sudo ./.github/workflows/posix-deps-apt.sh
+      - name: Check Autoconf version 2.69 and aclocal 1.16.3
+        run: |
+          grep "Generated by GNU Autoconf 2.69" configure
+          grep "aclocal 1.16.3" aclocal.m4
+          grep -q "runstatedir" configure
+          grep -q "PKG_PROG_PKG_CONFIG" aclocal.m4
+      - name: Configure CPython
+        run: |
+          # Build Python with the libpython dynamic library
+          ./configure --config-cache --with-pydebug --enable-shared
+      - name: Regenerate autoconf files
+        run: |
+          make regen-configure
       - name: Build CPython
         run: |
           ./configure --with-pydebug

Makefile.pre.in

@@ -1742,6 +1742,18 @@ autoconf:
 	# Regenerate pyconfig.h.in from configure.ac using autoheader
 	(cd $(srcdir); autoheader -Wall)
 
+# See https://github.com/tiran/cpython_autoconf container
+.PHONY: regen-configure
+regen-configure:
+	@if command -v podman >/dev/null; then RUNTIME="podman"; else RUNTIME="docker"; fi; \
+	if ! command -v $$RUNTIME; then echo "$@ needs either Podman or Docker container runtime." >&2; exit 1; fi; \
+	if command -v selinuxenabled >/dev/null && selinuxenabled; then OPT=":Z"; fi; \
+	# Manifest corresponds with tag '269' \
+	CPYTHON_AUTOCONF_MANIFEST="sha256:f370fee95eefa3d57b00488bce4911635411fa83e2d293ced8cf8a3674ead939" \
+	CMD="$$RUNTIME run --rm --pull=missing -v $(abs_srcdir):/src$$OPT quay.io/tiran/cpython_autoconf@$$CPYTHON_AUTOCONF_MANIFEST"; \
+	echo $$CMD; \
+	$$CMD || exit $?
+
 # Create a tags file for vi
 tags::
 	ctags -w $(srcdir)/Include/*.h $(srcdir)/Include/cpython/*.h $(srcdir)/Include/internal/*.h

aclocal.m4

@@ -1,4 +1,4 @@
-# generated automatically by aclocal 1.16.2 -*- Autoconf -*-
+# generated automatically by aclocal 1.16.3 -*- Autoconf -*-
 
 # Copyright (C) 1996-2020 Free Software Foundation, Inc.
 

configure

@@ -783,6 +783,7 @@ infodir
 docdir
 oldincludedir
 includedir
+runstatedir
 localstatedir
 sharedstatedir
 sysconfdir
@@ -897,6 +898,7 @@ datadir='${datarootdir}'
 sysconfdir='${prefix}/etc'
 sharedstatedir='${prefix}/com'
 localstatedir='${prefix}/var'
+runstatedir='${localstatedir}/run'
 includedir='${prefix}/include'
 oldincludedir='/usr/include'
 docdir='${datarootdir}/doc/${PACKAGE_TARNAME}'
@@ -1149,6 +1151,15 @@ do
   | -silent | --silent | --silen | --sile | --sil)
     silent=yes ;;
 
+  -runstatedir | --runstatedir | --runstatedi | --runstated \
+  | --runstate | --runstat | --runsta | --runst | --runs \
+  | --run | --ru | --r)
+    ac_prev=runstatedir ;;
+  -runstatedir=* | --runstatedir=* | --runstatedi=* | --runstated=* \
+  | --runstate=* | --runstat=* | --runsta=* | --runst=* | --runs=* \
+  | --run=* | --ru=* | --r=*)
+    runstatedir=$ac_optarg ;;
+
   -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
     ac_prev=sbindir ;;
   -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
@@ -1286,7 +1297,7 @@ fi
 for ac_var in	exec_prefix prefix bindir sbindir libexecdir datarootdir \
 		datadir sysconfdir sharedstatedir localstatedir includedir \
 		oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
-		libdir localedir mandir
+		libdir localedir mandir runstatedir
 do
   eval ac_val=\$$ac_var
   # Remove trailing slashes.
@@ -1439,6 +1450,7 @@ Fine tuning of the installation directories:
   --sysconfdir=DIR        read-only single-machine data [PREFIX/etc]
   --sharedstatedir=DIR    modifiable architecture-independent data [PREFIX/com]
   --localstatedir=DIR     modifiable single-machine data [PREFIX/var]
+  --runstatedir=DIR       modifiable per-process data [LOCALSTATEDIR/run]
   --libdir=DIR            object code libraries [EPREFIX/lib]
   --includedir=DIR        C header files [PREFIX/include]
   --oldincludedir=DIR     C header files for non-gcc [/usr/include]

pyconfig.h.in

@@ -281,6 +281,9 @@
 /* Define to 1 if you have the `dup3' function. */
 #undef HAVE_DUP3
 
+/* Define if you have the '_dyld_shared_cache_contains_path' function. */
+#undef HAVE_DYLD_SHARED_CACHE_CONTAINS_PATH
+
 /* Defined when any dynamic module loading is enabled. */
 #undef HAVE_DYNAMIC_LOADING
 
@@ -772,9 +775,6 @@
 /* Define if you have the 'prlimit' functions. */
 #undef HAVE_PRLIMIT
 
-/* Define if you have the '_dyld_shared_cache_contains_path' function. */
-#undef HAVE_DYLD_SHARED_CACHE_CONTAINS_PATH
-
 /* Define to 1 if you have the <process.h> header file. */
 #undef HAVE_PROCESS_H