Swift: set compiler flags explicitly

.bazelrc

@@ -1,4 +1,3 @@
-# -fno-rtti is required by LLVM/Swift
-build --repo_env=CC=clang --repo_env=CXX=clang++ --copt="-std=c++17" --copt="-fno-rtti"
+build --repo_env=CC=clang --repo_env=CXX=clang++ --copt="-std=c++17"
 
 try-import %workspace%/local.bazelrc

swift/extractor/BUILD.bazel

@@ -14,6 +14,10 @@ cc_binary(
         "SwiftExtractorConfiguration.h",
         "main.cpp",
     ],
+    copts = [
+        # Required by LLVM/Swift
+        "-fno-rtti",
+    ],
     target_compatible_with = select({
         "@platforms//os:linux": [],
         "@platforms//os:macos": [],