Status and rationale for toplevel bootstrap (was Re: Example of debugging GCC with toplevel bootstrap)

[Richard Kenner]

    Though it makes me wonder why people did not replicate the design for 
    C++, Fortran (even old g77) and Java?

I suspect it's because of the different role of the run-time library between
Ada and those languages.

    More like "(cd gcc; make gnatlib_and_tools)", i.e. the current directory 
    is the same.

That matters?