[Bug build/25799] python dependency (as strict requirement)

[joseph at codesourcery dot com]

https://sourceware.org/bugzilla/show_bug.cgi?id=25799

--- Comment #3 from joseph at codesourcery dot com <joseph at codesourcery dot com> ---
On Tue, 7 Apr 2020, serg.brester at sebres dot de via Glibc-bugs wrote:

> Assume you have ONLY initially built system without anything from GNU (and no
> python)...
> The question was: is that even possible any more, starting with no gnu software
> and compiling everything from scratch?

I'm pretty sure you can build Python with a non-GNU C compiler, if you're 
starting from a proprietary Unix with the OS-provided proprietary C 
compiler (as would have been the typical starting point for people 
building GCC in the 1980s and early 1990s).  To build GCC you do of course 
now need a C++ compiler, but I think the last version of GCC that could be 
built as C works for building current GCC (until GCC moves to requiring 
C++11, at which point the bootstrap sequence from a C compiler will become 
longer).

> I tend to interpret your answer as "No" and that the bootstrapping of the gnu
> toolchain isn't considered a requirement any more.

Look at the Guix / GNU Mes project's work on bootstrapping with a reduced 
binary seed.  Guix / GNU Mes is where such issues are addressed in the GNU 
project, not glibc.  It may not yet be at the point of the starting 
binaries needed being of the size that someone can assemble by hand, but 
that would be a natural end-goal to aim for.

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