您可能需要使用平台检测，以适应MSYS2的行为和默认行为，下面是一些有用的标识符：
| Identifier | Platform(s) | Usage |
|---|---|---|
_WIN32 | mingw, msvc | C code (#ifdef ...) |
_WIN64 | 64-bit mingw, 64-bit msvc | C code (#ifdef ...) |
__CYGWIN__ | msys2, cygwin | C code (#ifdef ...) |
__MSYS__ | msys2 | C code (#ifdef ...) |
x86_64-pc-msys2 | 64-bit msys2 | Build scripts (if [ $host = '...' ]) |
i686-pc-msys2 | 32-bit msys2 | Build scripts (if [ $host = '...' ]) |
x86_64-w64-mingw32 | 64-bit mingw | Build scripts (if [ $host = '...' ]) |
i686-w64-mingw32 | 32-bit mingw | Build scripts (if [ $host = '...' ]) |
cygwin | msys2 | Python (sys.platform) |
win32 | mingw | Python (sys.platform) |
