Re: Crosstool 0.28 failure building mipsel on cygwin

[Dan Kegel <dank at kegel dot com>]

Kai Ruottu wrote:
> > This configuration is mentioned in demo-mipsel.sh as working with the 
> > Linksys WRT54G router and that configuration is also mentioned as 
> > being good at http://kegel.com/crosstool/#results.
>
>  Ok, I too have considered to buy this Linksys router with ucLinux on 
> it. But
> then my goal first could be to be the root user there and try to produce 
> some
> simple apps to run on it, by producing crosstools for this target 
> system, using
> its own uClibc as the target C library and such, behaving in the same 
> way as I
> have behaved with all the 1000+ crosstools earlier...
>
>  So my stupid question is: What is wrong with the WRT54G so that producing
> normal crosstools for it is impossible? Does Linksys hurt the GPL somehow
> and don't provide sources and binaries for their Linux distro?

Nope.  The WRT54G is just fine, and Linksys has obeyed the GPL well
enough, I suspect.  I've built tools for it with crosstool no problem
in the past.  The funky thing is that they use uclibc, so
glibc-based crosstools are not a perfect fit.

> The words "included a full MIPS Linux Toolchain(binary) in
> the Sourcepackage" claim that Linksys doesn't do anything like that in
> order to become sued by FSF... And that producing crosstools for some
> other host than that supported by the Linksys binaries, should be easy
> and totally normal cross-GCC producing... But what is the truth?

The only funky thing, as I mentioned above, is that the libc
on the box is uclibc.

>  Is it really possible to replace the much smaller ucLinux with uClibc on
> WRT54G and replace it with a full-blown real Linux with glibc ?

There isn't much RAM on the WRT54G, so glibc isn't a great match, I think.
(I'm not sure they're using ucLinux, by the way.)

> Anyone ever
> produced crosstools for the Linksys own "Linux"?

You mean a uclibc-based toolchain?  Sure, I bet several people have.
Crosstool's uclibc support probably does it, but I haven't tried that.
- Dan

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