The Windows compilers are more capable than old 90s compilers. But random source code written for Linux is a lot more compatible as-is with AIX, HP-UX, IRIX and

The Windows compilers are more capable than old 90s compilers. But random source code written for Linux is a lot more compatible as-is with AIX, HP-UX, IRIX and others than with Windows. Windows doesn't have forks (needs emulation via threads), second class support for things like symlinks, and isn't POSIX compatible (yes, I know you can get that as a separate install). Porting a Linux program to Windows is like porting it to Novell, or some random mainfram OS. Not another OS in the Unix family.