fixup! gh-127432: Add CI job to cross build Python

Author: matthewhughes934

.github/workflows/build.yml

@@ -525,28 +525,30 @@ jobs:
 
   with-python-build-linux:
     runs-on: ubuntu-latest
+    env:
+      BUILD_DIR: ${{ github.workspace }}/build
     steps:
       - uses: actions/checkout@v4
         with:
           persist-credentials: false
       - name: Install Dependencies
         run: sudo ./.github/workflows/posix-deps-apt.sh
       - name: Configure host build
-        run: ./configure --prefix="$PWD/../build/host-python"
+        run: ./configure --prefix="$BUILD_DIR/host-python"
       - name: Install host Python
         run: make -j8 install
       - name: Run test subset with host build
         run: |
-          "$PWD/../build/host-python/bin/python3" -m test test_sysconfig test_site test_embed
+          "$BUILD_DIR/host-python/bin/python3" -m test test_sysconfig test_site test_embed
       - name: Clean up build
-        run: make -j clean
+        run: make -j8 clean
       - name: Configure cross build
-        run: ./configure --prefix="$PWD/../build/cross-python" --with-build-python="$PWD/../build/host-python/bin/python3"
+        run: ./configure --prefix="$BUILD_DIR/cross-python" --with-build-python="$BUILD_DIR/host-python/bin/python3"
       - name: Install cross Python
         run: make -j8 install
       - name: Run test subset with host build
         run: |
-          "$PWD/../build/cross-python/bin/python3" -m test test_sysconfig test_site test_embed
+          "$BUILD_DIR/cross-python/bin/python3" -m test test_sysconfig test_site test_embed
 
   # CIFuzz job based on https://google.github.io/oss-fuzz/getting-started/continuous-integration/
   cifuzz: