From: Christian Heimes <christian@python.org>
Date: Mon, 6 Dec 2021 12:18:56 +0000 (+0200)
Subject: bpo-44035: Check autoconf files thoroughly (GH-29935)
X-Git-Tag: v3.11.0a3~40
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=98fac8bc183c113903403793ffe411358ee40d8a;p=thirdparty%2FPython%2Fcpython.git

bpo-44035: Check autoconf files thoroughly (GH-29935)

Check that users don't push changes with outdated or patched autoconf.
The presence of runstatedir option and aclocal 1.16.3 are good markers.

Use my container image to regenerate autoconf files. "Check for changes"
will fail later when any file is regenerated.

Use ccache in check_generated_files to speed up testing.
---

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index fbf7bb6fe212..99f05f3abec9 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -64,6 +64,18 @@ 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 $(pwd):/src quay.io/tiran/cpython_autoconf:269
       - name: Build CPython
         run: |
           # Build Python with the libpython dynamic library
@@ -75,9 +87,10 @@ jobs:
           git add -u
           changes=$(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
@@ -85,10 +98,6 @@ jobs:
         run: make smelly
       - name: Check limited ABI symbols
         run: make check-limited-abi
-      - name: Check Autoconf version 2.69
-        run: |
-          grep "Generated by GNU Autoconf 2.69" configure
-          grep "PKG_PROG_PKG_CONFIG" aclocal.m4
 
   build_win32:
     name: 'Windows (x86)'
diff --git a/.gitignore b/.gitignore
index cfd3163cd181..39de8410200c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -115,6 +115,8 @@ Tools/unicode/data/
 /config.log
 /config.status
 /config.status.lineno
+# hendrikmuhs/ccache-action@v1
+/.ccache
 /platform
 /profile-clean-stamp
 /profile-run-stamp
diff --git a/Misc/NEWS.d/next/Build/2021-12-06-09-31-27.bpo-44035.BiO4XC.rst b/Misc/NEWS.d/next/Build/2021-12-06-09-31-27.bpo-44035.BiO4XC.rst
new file mode 100644
index 000000000000..7530587b73d1
--- /dev/null
+++ b/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.