gtf-launch error while building library

While the majority of people don't run into this problem, and I've never been able to reproduce it myself, you're not the first to run into this. In particular aihuazou reported this problem on this forum. In his case it was fixed by upgrading his operating system. He was previously running Windows NT.

I've tried this on the same version of Windows without problems, so I don't think it's Windows NT itself that's at fault. My guess is that the problem is something to do with drive configuration, permissions, cygwin configuration or the likes.

Sorry I don't have a good answer for you, but if you get any clues as to what the problem might be - please post your findings.