I have a .lib file(which holds simple mathematical calculation) generated for C51(P89v51RD2) tool chain. Now how can i use this lib file in arm tool-chain ARM Cortex M3(LPC 1788)
code implemented by our previous engineer who is not available with us at present
So how come nobody insisted that he should leave behind not just the compiled library, but also the source code for it?
what to do??
Give up on that library, task somebody with writing a new one from scratch (or from the same requirements, assuming you at least managed to archive those) and keep the source code, this time round. And consider the price of that exercise the appropriate punishment for being grossly negligent about source code control, before.