Re: towards a good embedded userland cross-build system

[Robert Schwebel <robert at schwebel dot de>]

On Thu, Aug 14, 2003 at 04:11:40PM -0700, Dan Kegel wrote:
> Can you give me details about the gcc-3* bugs you think you're seeing?
> I'd like to address them.

With ptxdist-0.3.23: switch on "libio instead of stdio" in glibc; 'make
i386-generic-glibc_config; make world'. On Debian stable (gcc-2.95.4)
this does work, on Debian unstable (gcc-3.3.1) it breaks. 

> I've had good luck with gcc-3.3.1 so far.  It's good stuff.
> Debian is tripping over its own shoelaces a bit here, I think.

Might be ;)

> Sounds a bit like GAR (http://www.lnx-bbc.org/garchitecture.html).
> Did you look at that one?

Nope, and it's currently not reachable. Maybe power failure ;)

> I'll look at it, but I have a feeling the toolchain build can't
> be expressed as Makefiles properly.  What rule would one have
> for /usr/include/stdio.h? That gets installed twice -- once before
> building the bootstrap gcc (I'm not kidding; it's awful), and once
> before building the real gcc.

That's why I have two packets: gcc-stage1 and gcc-stage2, both with the
"usual" targets. 

> Yes, of course, even for i386 I would build a fresh cross-compiler; I
> don't want the build machine's local files leaking into the target.
> But I don't know that the toolchain should be built by the same
> machinery that builds everything else. FWIW, one of my users'
> requirements is that they not have to build the toolchain, so I have
> to have a two-step process anyway.

Ok, that's probably a design decision. I currently need to have some
tools on the host first (host compiler, binutils and some others). The
problem how far you want to go with the do-it-yourself methot. I'm not
decided yet. 

Robert 
-- 
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