I successfully use the tup build system on a Debian based system. According to the website, it should also run under Windows. I downloaded the latest version from their website for Windows, unzipped it and added the directory to the PATH env variable.
Unfortunately, I always get the following error: tup error: failed to create child process: No such file or directory
Did anyone manage to run tup under Win 8 64bit? How?
Tup has added support for 64-bit Windows only recently (see the original commit here).
Since tup uses DLL injection to intercept the file-system and process-creation operations, it needed to have both 32-bit and 64-bit DLLs and properly working injection mechanism for both platforms.