Check previous versions as well

.github/workflows/rust-target.yml

@@ -12,12 +12,26 @@ on:
       - main
 
 jobs:
+  define-matrix:
+    runs-on: ubuntu-latest
+    outputs:
+      matrix: ${{ steps.define-matrix.outputs.matrix }}
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Define Matrix
+        id: define-matrix
+        run: |
+          matrix=$(python ci/set_versions.py)
+          echo "matrix=$matrix" >> $GITHUB_OUTPUT
+
   test:
     runs-on: ubuntu-latest
+    needs: [define-matrix]
     strategy:
       fail-fast: false
-      matrix:
-        rust-version: ["1.33", "1.36", "1.40", "1.43", "1.47", "1.59", "1.64", "1.68", "1.71", "1.73", "1.77", "nightly"]
+      matrix: ${{ fromJSON(needs.define-matrix.outputs.matrix) }}
     steps:
       - uses: actions/checkout@v4
 
@@ -33,11 +47,14 @@ jobs:
 
       - name: Check headers
         run: |
-          HEADERS=$(rg -l '\-\-rust-target[\s=]${{matrix.rust-version}}' bindgen-tests/tests/headers/ | cut -d '/' -f 4 | cut -d '.' -f 1)
+          TARGET_VERSIONS=$(echo '${{matrix.target-versions}}' | jq ".[]" | tr -d '"')
+          for TARGET_VERSION in $TARGET_VERSIONS; do
+            echo "Running checks for target version $TARGET_VERSION"
+            HEADERS=$(rg -l '\-\-rust-target[\s=]$TARGET_VERSION' bindgen-tests/tests/headers/ | cut -d '/' -f 4 | cut -d '.' -f 1)
 
-          for HEADER in $HEADERS; do 
-            FILE="bindgen-tests/tests/expectations/tests/$HEADER.rs"
-            echo "Checking $FILE"
-            rustup run ${{matrix.rust-version}} rustc --edition=2018 --crate-type=rlib --emit=metadata $FILE
+            for HEADER in $HEADERS; do 
+              FILE="bindgen-tests/tests/expectations/tests/$HEADER.rs"
+              echo "Checking $FILE"
+              rustup run ${{matrix.rust-version}} rustc --edition=2018 --crate-type=rlib --emit=metadata $FILE
+            done
           done
-

ci/set_versions.py

@@ -0,0 +1,7 @@
+import json
+
+versions = '["1.33", "1.36", "1.40", "1.43", "1.47", "1.59", "1.64", "1.68", "1.71", "1.73", "1.77", "nightly"]'
+
+versions = json.loads(versions)
+
+print(json.dumps([{"rust-version": version, "target-versions": versions[0:i+1] } for (i, version) in enumerate(versions)]))