Allow building bindings with compilers that do not support the -Wno-nonnull-compare flag

CHANGELOG.md

@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Fixed
+
+- Allow building Python bindings with Clang versions that do not support some
+  some warning flags.
+  - Specifically `-Wno-nonnull-compare`.
+
 ## [1.12.6] - 2025-02-06
 
 ### Fixed

setup.py

@@ -13,6 +13,7 @@ headersList = [str(x) for x in bindingsPath.glob("**/*.h")] + [str(x) for x in s
 
 extraCompileArgs = ["-std=c11", "-Wall", "-g",]
 if platform.system() == "Linux":
+    extraCompileArgs += ["-Wno-unknown-warning-option",]
     extraCompileArgs += ["-Os", "-Wextra",]
     extraCompileArgs += ["-Werror=vla", "-Werror=switch", "-Werror=implicit-fallthrough", "-Werror=unused-function", "-Werror=unused-parameter", "-Werror=shadow", "-Werror=switch"]
     extraCompileArgs += ["-Werror=implicit-function-declaration", "-Werror=incompatible-pointer-types"]