SingleThreaded

Compile without additional flags to use a single-threaded statically-linked runtime library.

SingleThreadedDLL

Compile with -br or equivalent flag(s) to use a single-threaded dynamically-linked runtime library. This is not available for Linux targets.

MultiThreaded

Compile with -bm or equivalent flag(s) to use a multi-threaded statically-linked runtime library.

MultiThreadedDLL

Compile with -bm -br or equivalent flag(s) to use a multi-threaded dynamically-linked runtime library. This is not available for Linux targets.

The value is ignored on non-Watcom compilers but an unsupported value will be rejected as an error when using a compiler targeting the Watcom ABI.

The value may also be the empty string ("") in which case no runtime library selection flag will be added explicitly by CMake.