Update: I couldn’t find a solution. But I have noticed a strange behavior: after getting a build error, if I run make again without cleaning build, the build proceeds on the last error and stops at the next error.
Proceeding in this way I have reached the end of the compilation process … and UE4Editor starts!
But it seems quite unstable and crashes frequently.
I’ve been around for a while with this kind of thing, but this is the first time I’ve seen something so weird and unpredictable.