[3.7] Workarounds to allow GitHub Actions macOS CI tests to run for 3.7. (GH-104998)

Note that this is intended solely for the current GitHub Actions CI
macOS environment, in particular, macOS 12 on Intel-64 only.
Out of the box, 3.7.x does not fully support macOS 11 and
later systems and does not fully support building or running on
Apple Silicon Macs (which were first supported in macOS 11),
all of which were released after 3.7 had reached the
security-fix-only phase of its life cycle.

diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 149436319673a0c6e8c974db0d63eb7b164619a2..cc2e41aad5d1862d308f74422fe87de85ae4a87a 100644 (file)
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -125,10 +125,31 @@ jobs:
     runs-on: macos-latest
     needs: check_source
     if: needs.check_source.outputs.run_tests == 'true'
+    env:
+      HOMEBREW_NO_ANALYTICS: 1
+      HOMEBREW_NO_AUTO_UPDATE: 1
+      HOMEBREW_NO_INSTALL_CLEANUP: 1
     steps:
     - uses: actions/checkout@v2
     - name: Configure CPython
-      run: SDKROOT=/Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk ./configure --with-pydebug --with-openssl=/usr/local/opt/openssl --prefix=/opt/python-dev
+      run: |
+        brew install pkg-config openssl@1.1 xz gdbm tcl-tk
+        brew install zlib bzip2 ncurses readline sqlite
+        SDKROOT=/Library/Developer/CommandLineTools/SDKs/MacOSX12.sdk \
+        CC=clang \
+        CPPFLAGS="-I$(brew --prefix gdbm)/include -I$(brew --prefix xz)/include \
+            -I$(brew --prefix zlib)/include  -I$(brew --prefix bzip2)/include \
+            -I$(brew --prefix ncurses)/include -I$(brew --prefix readline)/include \
+            -I$(brew --prefix sqlite)/include" \
+        LDFLAGS="-L$(brew --prefix gdbm)/lib -L$(brew --prefix xz)/lib \
+            -L$(brew --prefix zlib)/lib  -L$(brew --prefix bzip2)/lib \
+            -L$(brew --prefix ncurses)/lib -L$(brew --prefix readline)/lib \
+            -L$(brew --prefix sqlite)/lib" \
+        ./configure --prefix=/opt/python-dev \
+            --with-pydebug \
+            --with-openssl="$(brew --prefix openssl@1.1)" \
+            --with-tcltk-libs="$(pkg-config --libs tk)" \
+            --with-tcltk-includes="$(pkg-config --cflags tk)"
     - name: Build CPython
       run: make -j4
     - name: Display build info