Cross GCC and Sysroot

[Kai Ruottu]

Duft Markus kirjoitti:
> Hi!
>
> I'm working on getting a compiler-farm up, that can cross compile to
> multiple platforms. It's allready almost done, but there are some small
> problems left over.
>
> Since the Compiler-Farm will only compile (no preprocessing, no linking,
> etc.) because of usage of DISTCC, i wanted to ask if there is a way to
> build binutils/gcc in a way that there are only the really necessary
> parts (as, gcc, g++) without support for linking and other unwanted
> stuff.
>   
 Just leave the build when it stops!  It stops when trying libgcc, so if 
you don't link,
where you will need libgcc?
> The second problem is, how to find out what to put in the sysroot
> packages used to bootstrap the crossc ompilers for each platform. At the
> moment this is a really annoying manual process of sorting out and
> tar'ing together /usr/include and /usr/lib with some additional
> softlinks. Is there a somewhat short list of files i need for this
> purpose?
>   
 You  don't need anything for the $target system...
> The sysroot package is used only for bootstrapping gcc, since everything
> that the cross-gcc will see is preprocessed allready.
>   
 No 'bootstrap' required either...

 In a nutshell: Building GCC binaries requires ONLY the $host GCC !  
Nothing for
the $target !  Producing anything for the $target WITH the new GCC then 
can require
quite a lot $target stuff !