Wrap llvm-gcov to be callable as a single executable.

Author: kyle-github

.github/workflows/coverage.yml

@@ -157,10 +157,18 @@ jobs:
       - name: Test
         run: ctest --test-dir build --output-on-failure
 
+      - name: Create gcov wrapper
+        run: |
+          cat > /usr/local/bin/llvm-gcov << 'EOF'
+          #!/bin/bash
+          exec llvm-cov gcov "$@"
+          EOF
+          chmod +x /usr/local/bin/llvm-gcov
+
       - name: Generate Coverage Report
         run: |
-          lcov --gcov-tool "$(which llvm-cov) gcov" --capture --directory build --output-file coverage.info
-          lcov --gcov-tool "$(which llvm-cov) gcov" --remove coverage.info '/usr/*' --output-file coverage.info
+          lcov --gcov-tool llvm-gcov --capture --directory build --output-file coverage.info
+          lcov --gcov-tool llvm-gcov --remove coverage.info '/usr/*' --output-file coverage.info
           genhtml coverage.info --output-directory docs/coverage --title "yafl Code Coverage"
 
       - name: Generate Coverage Badge