macos

Merge pull request #222 from tcbrindle/pr/fix-single-header #706

Job	Run time
build (AppleClang, Headers, Debug)	53s
build (AppleClang, Headers, Release)	55s
build (LLVM-Clang-16, Headers, Debug)	1m 7s
build (LLVM-Clang-16, Headers, Release)	1m 15s
build (LLVM-Clang-17, Headers, Debug)	1m 16s
build (LLVM-Clang-17, Headers, Release)	1m 15s
build (LLVM-Clang-17, Module, Debug)	1m 13s
build (LLVM-Clang-17, Module, Release)	1m 18s
build (LLVM-Clang-18, Headers, Debug)	1m 25s
build (LLVM-Clang-18, Headers, Release)	1m 0s
build (LLVM-Clang-18, Module, Debug)	55s
build (LLVM-Clang-18, Module, Release)	1m 8s
build (LLVM-Clang-19, Headers, Debug)	1m 38s
build (LLVM-Clang-19, Headers, Release)	1m 42s
build (LLVM-Clang-19, Module, Debug)	1m 20s
build (LLVM-Clang-19, Module, Release)	1m 17s
	19m 37s

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