The build works on tons of computers. The issue is not with berkley db. It was forked 8 months ago so that isn't your issue. Try PyWallet or some of the other recovery methods. Also you should always backup wallet.dat I don't maintain the QT and it's similar to the Blackcoin QT which has been forked a lot. Maybe if we upgraded to newest Bitcoin core we would find Bitcoin patch but I'm not sure they patched that.

If you built it yourself then maybe but I think your issue is a common issue with Bitcoin.

I code the markets wallet which runs no risk of database corruption because it doesn't mix database with private keys unlike wallet.dat

I wish I could be more of a help but all I can say is always backup your wallets

If you follow some of those instructions you have a chance try pywallet to see if you can get private keys outta that