Name	Prefix	Toolchain	Architecture	C Library	C++ Library
MSYS	/usr	gcc	x86_64	cygwin	libstdc++
UCRT64	/ucrt64	gcc	x86_64	ucrt	libstdc++
CLANG64	/clang64	llvm	x86_64	ucrt	libc++
CLANGARM64	/clangarm64	llvm	aarch64	ucrt	libc++
CLANG32	/clang32	llvm	i686	ucrt	libc++
MINGW64	/mingw64	gcc	x86_64	msvcrt	libstdc++
MINGW32	/mingw32	gcc	i686	msvcrt	libstdc++

cygwin 是重新对 Windows CRT的代换

msvcrt是 ucrt的旧版

linux 使用的是glibc 与eglibc