fatal error: "sys/uio.h: No such file or directory".
This is not a BDB .h file. Maybe something being brought in by your application?
I would suggest you post this on a mingw forum and ask about it. This error looks like there is a problem with an environment variable, or a path variable, or some include path, etc. Someone who uses mingw on a frequent basis could probably answer this question pretty quickly. Another possible approach would be to post something on stackoverflow. Have you researched on google?
hope this helps