add macOS build support for unit tests#225
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Add conditional CMake configuration for macOS (APPLE): - Skip -m32 and Linux-specific linker flags - Define HAVE_STRLCPY/HAVE_STRLCAT (macOS provides these natively) - Exclude n_str.c (strlcpy/strlcat bundled implementations) - Suppress AppleClang-specific warnings in upstream code - Use -flat_namespace for dylib and test executables to enable FFF test fake symbol interposition All changes are guarded by if(APPLE)/if(NOT APPLE) so Linux CI behavior is completely unchanged.
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Summary
if(APPLE)/if(NOT APPLE)to preserve existing Linux CI behaviorChanges
CMakeLists.txt:-m32,-mfpmath=sse,-msse2on macOS (not available on Apple toolchain)-Wl,-melf_i386linker flag on macOSHAVE_STRLCPYandHAVE_STRLCATon macOS (system provides these as macros, avoiding conflict with note-c bundled implementations)n_str.con macOS (bundledstrlcpy/strlcatnot needed)-Wno-deprecated-non-prototype,-Wno-unused-but-set-variable,-Wno-strict-prototypes-Wl,-flat_namespaceon macOS for FFF symbol interpositiontest/CMakeLists.txt:-m32for Catch2 on macOS-Wl,-flat_namespaceto test executables on macOS (required for FFF fakes to interpose dylib symbols)Test plan