Hello,
it seems, that you try to use the Build Environment for STM32F769-Discovery board on a STM32F769-Evalboard. In principle this is a possible starting point - but you need adapt several settings, paths,...
However, there are good news: We just finalized the Build Environments for different Eval baords. Currently, the website for registration is not updated - so I will send you the links with a separate email.
Best regards,
Manfred.