GMAKE error returns - What does that mean ?

I am using xmake which I guess calls gmake which ... whatever.

I get an error in my compiling and want to know what the error number means. For example, the message might be "Error 139".

Rather then post the exact code fragment and exact output, I want to find the a list of error codes and find out what it means for myself.

Is there such a list ? where might this be ?

What the error code means depends on what returned it to gmake.