add EXTRACFLAGS for darwin #79

Job	Run time
test (linux-amd64, linux, linux, ubuntu-24.04, amd64, clang, clang++)	8m 58s
test (linux-amd64, linux, linux, ubuntu-24.04, amd64, clang, clang++)	5m 52s
test (linux-amd64, linux, linux, ubuntu-24.04, amd64, clang, clang++)	5m 52s
test (linux-amd64, linux, linux, ubuntu-24.04, amd64, clang, clang++)	5m 52s
test (linux-arm32, linux, linux, ubuntu-24.04, arm32, arm-linux-gnueabihf-gcc, g++)	7m 8s
test (linux-arm32, linux, linux, ubuntu-24.04, arm32, arm-linux-gnueabihf-gcc, g++)	4m 1s
test (linux-arm32, linux, linux, ubuntu-24.04, arm32, arm-linux-gnueabihf-gcc, g++)	4m 1s
test (linux-arm32, linux, linux, ubuntu-24.04, arm32, arm-linux-gnueabihf-gcc, g++)	4m 1s
test (linux-arm64, linux, linux, ubuntu-24.04, arm64, aarch64-linux-gnu-gcc, g++)	7m 27s
test (linux-arm64, linux, linux, ubuntu-24.04, arm64, aarch64-linux-gnu-gcc, g++)	3m 54s
test (linux-arm64, linux, linux, ubuntu-24.04, arm64, aarch64-linux-gnu-gcc, g++)	3m 54s
test (linux-arm64, linux, linux, ubuntu-24.04, arm64, aarch64-linux-gnu-gcc, g++)	3m 54s
test (macOS-amd64, macos, osx, macos-12, amd64, clang, clang++)	32m 34s
test (macOS-amd64, macos, osx, macos-12, amd64, clang, clang++)	7m 21s
test (macOS-amd64, macos, osx, macos-12, amd64, clang, clang++)	8m 53s
test (macOS-amd64, macos, osx, macos-12, amd64, clang, clang++)	12m 49s
	2h 6m 31s

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