build: provide some backwards compatibility for option changes #265

Job	Run time
linux (-DBUILD_SHARED_LIBS=YES, clang, clang++)	36s
windows (-DBUILD_SHARED_LIBS=YES)	1m 15s
macos (-DBUILD_SHARED_LIBS=YES, clang, clang++)	1m 34s
linux (-DBUILD_SHARED_LIBS=YES, gcc, g++)	25s
windows	1m 15s
linter	59s
macos (-DBUILD_SHARED_LIBS=YES, gcc, g++)	1m 13s
linux (clang, clang++)	50s
macos (clang, clang++)	1m 5s
linux (gcc, g++)	38s
macos (gcc, g++)	1m 6s
	10m 56s

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