Hi Chris, > has anyone managed this with success? i can built ada programs just > fine with "gnatmake file.adb" when the gnat 3.15p binary distribution > is at the end of my $PATH, but i cannot build gcc-4.0 after a > configure --enable-languages=ada with it at the end of my $PATH I guess your question is: does the Ada bootstrap really need to use gcc directly on Ada files (which will fail since gcc-3.3.4 from your path will be used), or does it in fact only use gcc spawned by gnatmake (which will use gcc-2.8.1), in which case the test for Ada support is too strict? > will gcc-4.0.0 build with gcc-2.8.1? (what ships with gnat-3.15p, the latest > binary distribution i could find...) It will. Since the final gcc-4.0.0 binary you end up with is built using gcc-4.0.0 itself, it should be the same binary as if you'd started with something else. Ciao, Duncan.