[3.9] bpo-44035: Check autoconf files thoroughly (GH-29935) (GH-29938)

Co-authored-by: Christian Heimes <christian@python.org>

.github/workflows/build.yml

@@ -83,6 +83,18 @@ jobs:
       - uses: actions/setup-python@v2
       - name: Install Dependencies
         run: sudo ./.github/workflows/posix-deps-apt.sh
+      - name: Add ccache to PATH
+        run: echo "PATH=/usr/lib/ccache:$PATH" >> $GITHUB_ENV
+      - name: Configure ccache action
+        uses: hendrikmuhs/ccache-action@v1
+      - 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: Regenerate autoconf files
+        run: docker run --rm -v $(pwd):/src quay.io/tiran/cpython_autoconf:269
       - name: Build CPython
         run: |
           ./configure --with-pydebug
@@ -91,16 +103,15 @@ jobs:
         run: |
           changes=$(git status --porcelain)
           # Check for changes in regenerated files
-          if ! test -z "$changes"
-          then
-            echo "Generated files not up to date. Perhaps you forgot to run make regen-all or build.bat --regen ;)"
+          if test -n "$changes"; then
+            echo "Generated files not up to date."
+            echo "Perhaps you forgot to run make regen-all or build.bat --regen. ;)"
+            echo "configure files must be regenerated with a specific, unpatched version of autoconf."
             echo "$changes"
             exit 1
           fi
       - name: Check exported libpython symbols
         run: make smelly
-      - name: Check Autoconf version 2.69
-        run: grep "Generated by GNU Autoconf 2.69" configure
 
   build_win32:
     name: 'Windows (x86)'

.gitignore

@@ -112,6 +112,8 @@ Tools/unicode/data/
 /config.log
 /config.status
 /config.status.lineno
+# hendrikmuhs/ccache-action@v1
+/.ccache
 /platform
 /profile-clean-stamp
 /profile-run-stamp

Misc/NEWS.d/next/Build/2021-12-06-09-31-27.bpo-44035.BiO4XC.rst

@@ -0,0 +1,2 @@
+CI now verifies that autoconf files have been regenerated with a current and
+unpatched autoconf package.

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

@@ -788,6 +788,7 @@ infodir
 docdir
 oldincludedir
 includedir
+runstatedir
 localstatedir
 sharedstatedir
 sysconfdir
@@ -905,6 +906,7 @@ 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}'
@@ -1157,6 +1159,15 @@ 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=$ac_optarg ;;
+
   -sbindir | --sbindir | --sbindi | --sbind | --sbin | --sbi | --sb)
     ac_prev=sbindir ;;
   -sbindir=* | --sbindir=* | --sbindi=* | --sbind=* | --sbin=* \
@@ -1294,7 +1305,7 @@ fi
 for ac_var in	exec_prefix prefix bindir sbindir libexecdir datarootdir \
 		datadir sysconfdir sharedstatedir localstatedir includedir \
 		oldincludedir docdir infodir htmldir dvidir pdfdir psdir \
-		libdir localedir mandir
+		libdir localedir mandir runstatedir
 do
   eval ac_val=\$$ac_var
   # Remove trailing slashes.
@@ -1447,6 +1458,7 @@ 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]
@@ -9920,13 +9932,15 @@ $as_echo "no" >&6; }
 fi
 rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 
+# check for libuuid from util-linux
 save_LIBS=$LIBS
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing uuid_generate_time_safe" >&5
-$as_echo_n "checking for library containing uuid_generate_time_safe... " >&6; }
-if ${ac_cv_search_uuid_generate_time_safe+:} false; then :
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for uuid_generate_time in -luuid" >&5
+$as_echo_n "checking for uuid_generate_time in -luuid... " >&6; }
+if ${ac_cv_lib_uuid_uuid_generate_time+:} false; then :
   $as_echo_n "(cached) " >&6
 else
-  ac_func_search_save_LIBS=$LIBS
+  ac_check_lib_save_LIBS=$LIBS
+LIBS="-luuid  $LIBS"
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 /* end confdefs.h.  */
 
@@ -9936,61 +9950,39 @@ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
 #ifdef __cplusplus
 extern "C"
 #endif
-char uuid_generate_time_safe ();
+char uuid_generate_time ();
 int
 main ()
 {
-return uuid_generate_time_safe ();
+return uuid_generate_time ();
   ;
   return 0;
 }
 _ACEOF
-for ac_lib in '' uuid; do
-  if test -z "$ac_lib"; then
-    ac_res="none required"
-  else
-    ac_res=-l$ac_lib
-    LIBS="-l$ac_lib  $ac_func_search_save_LIBS"
-  fi
-  if ac_fn_c_try_link "$LINENO"; then :
-  ac_cv_search_uuid_generate_time_safe=$ac_res
+if ac_fn_c_try_link "$LINENO"; then :
+  ac_cv_lib_uuid_uuid_generate_time=yes
+else
+  ac_cv_lib_uuid_uuid_generate_time=no
 fi
 rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext
-  if ${ac_cv_search_uuid_generate_time_safe+:} false; then :
-  break
+    conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
 fi
-done
-if ${ac_cv_search_uuid_generate_time_safe+:} false; then :
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_uuid_uuid_generate_time" >&5
+$as_echo "$ac_cv_lib_uuid_uuid_generate_time" >&6; }
+if test "x$ac_cv_lib_uuid_uuid_generate_time" = xyes; then :
+  cat >>confdefs.h <<_ACEOF
+#define HAVE_LIBUUID 1
+_ACEOF
 
-else
-  ac_cv_search_uuid_generate_time_safe=no
-fi
-rm conftest.$ac_ext
-LIBS=$ac_func_search_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_uuid_generate_time_safe" >&5
-$as_echo "$ac_cv_search_uuid_generate_time_safe" >&6; }
-ac_res=$ac_cv_search_uuid_generate_time_safe
-if test "$ac_res" != no; then :
-  test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
-
-
-$as_echo "#define HAVE_LIBUUID 1" >>confdefs.h
-,
-    { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-
-else
-  { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
+  LIBS="-luuid $LIBS"
 
 fi
 
 LIBS=$save_LIBS
 
 # AIX provides support for RFC4122 (uuid) in libc.a starting with AIX 6.1 (anno 2007)
-# FreeBSD and OpenBSD provides support as well
+# FreeBSD and OpenBSD provides support in libc as well.
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for uuid_create" >&5
 $as_echo_n "checking for uuid_create... " >&6; }
 cat confdefs.h - <<_ACEOF >conftest.$ac_ext

pyconfig.h.in

@@ -613,7 +613,7 @@
 /* Define to 1 if you have the <libutil.h> header file. */
 #undef HAVE_LIBUTIL_H
 
-/* Define you have libuuid. */
+/* Define to 1 if you have the `uuid' library (-luuid). */
 #undef HAVE_LIBUUID
 
 /* Define if you have the 'link' function. */