should use $(tc-getCC) from toolchain-funcs.eclass
It is using the bootstrap gcc that is downloaded as a binary. If I use the toolchain-funcs eclass will it still point to that binary? It would not work if it tries to use the installed gcc. GNAT is very picky with which compilers (and version) it will work (even if you have a working Ada compiler installed already).
i just misunderstood what was going on ... ebuild is kind of complicated ;) sorry for that