build

build #212

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Run time

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Job	Run time
Windows VS-2017	1s
Linux clang10	2m 21s
Windows VS-2019	3m 46s
macOS xcode-10.3	1s
Linux clang11	2m 22s
macOS xcode-11.7	1s
Linux clang12	2m 26s
macOS xcode-12.4	1s
Linux clang14	38s
Linux clang15	33s
Linux gcc9	2m 49s
Linux gcc10	2m 22s
	17m 21s