CMakeLists.txt - this will become the 2.2.1 version #75

Job	Run time
build (ubuntu-22.04, Debug, static, 5.15)	3m 21s
build (ubuntu-22.04, Debug, static, 6.5.*)	5m 18s
build (ubuntu-22.04, Debug, shared, 5.15)	3m 26s
build (ubuntu-22.04, Debug, shared, 6.5.*)	5m 24s
build (ubuntu-22.04, Release, static, 5.15)	1m 13s
build (ubuntu-22.04, Release, static, 6.5.*)	2m 8s
build (ubuntu-22.04, Release, shared, 5.15)	1m 10s
build (ubuntu-22.04, Release, shared, 6.5.*)	1m 31s
build (windows-2022, Debug, static, 5.15)	14m 41s
build (windows-2022, Debug, static, 6.5.*)	16m 17s
build (windows-2022, Debug, shared, 5.15)	14m 54s
build (windows-2022, Debug, shared, 6.5.*)	16m 53s
build (windows-2022, Release, static, 5.15)	1m 44s
build (windows-2022, Release, static, 6.5.*)	2m 25s
build (windows-2022, Release, shared, 5.15)	2m 1s
build (windows-2022, Release, shared, 6.5.*)	2m 36s
build (macos-12, Debug, static, 5.15)	3m 58s
build (macos-12, Debug, static, 6.5.*)	5m 23s
build (macos-12, Debug, shared, 5.15)	4m 44s
build (macos-12, Debug, shared, 6.5.*)	6m 55s
build (macos-12, Release, static, 5.15)	1m 45s
build (macos-12, Release, static, 6.5.*)	3m 0s
build (macos-12, Release, shared, 5.15)	2m 5s
build (macos-12, Release, shared, 6.5.*)	2m 48s
	2h 5m 40s

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