[build] Fix Gradle compile_commands.json and clang-tidy warnings (#5977)

.github/workflows/fix_compile_commands.py

@@ -0,0 +1,42 @@
+#!/usr/bin/env python3
+
+import argparse
+import json
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description="Fix compile_commands.json generated by Gradle"
+    )
+    parser.add_argument("filename", help="compile_commands.json location")
+    cmd_args = parser.parse_args()
+
+    # Read JSON
+    with open(cmd_args.filename) as f:
+        data = json.load(f)
+
+    for obj in data:
+        out_args = []
+
+        # Filter out -isystem flags that cause false positives
+        iter_args = iter(obj["arguments"])
+        for arg in iter_args:
+            if arg == "-isystem":
+                next_arg = next(iter_args)
+
+                # /usr/lib/gcc/x86_64-pc-linux-gnu/13.2.1/include/xmmintrin.h:54:1:
+                # error: conflicting types for '_mm_prefetch' [clang-diagnostic-error]
+                if not next_arg.startswith("/usr/lib/gcc/"):
+                    out_args += ["-isystem", next_arg]
+            else:
+                out_args.append(arg)
+
+        obj["arguments"] = out_args
+
+    # Write JSON
+    with open(cmd_args.filename, "w") as f:
+        json.dump(data, f, indent=2)
+
+
+if __name__ == "__main__":
+    main()

.github/workflows/lint-format.yml

@@ -68,7 +68,10 @@ jobs:
       - name: Install wpiformat
         run: pip3 install wpiformat
       - name: Create compile_commands.json
-        run: ./gradlew generateCompileCommands -Ptoolchain-optional-roboRio
+        run: |
+          ./gradlew generateCompileCommands -Ptoolchain-optional-roboRio
+          ./.github/workflows/fix_compile_commands.py build/TargetedCompileCommands/linuxx86-64release/compile_commands.json
+          ./.github/workflows/fix_compile_commands.py build/TargetedCompileCommands/linuxx86-64debug/compile_commands.json
       - name: List changed files
         run: wpiformat -list-changed-files
       - name: Run clang-tidy release