[gcc] Build fail for 2.95.3 version on a modern system

[Marcello Stanisci]

> to put its components to tell their search paths... If you yet don't know,
> please learn this
> thing, for instance via Google like looking via "search paths for GCC"...

I don't need this information, I know where it searches for headers,
and it searches
in wrong places; I just only need to tell to the almost built compiler
to search in an
alternative directory. The point is that I can't use the -I and -L
option on xgcc, beacause
it isn't launched by me; it is launched by its compilation process.