Re: Build native compiler using cross compiler??

[Andris Pavenis <pavenis at latnet dot lv>]

On Friday 28 December 2001 04:27, Andrea 'Fyre Wyzard' Bocci wrote:
> At 14.46 27/12/2001 (GMT +0800), Aladdin Chang wrote:
> >Dear all,
> >
> >Is it possible to build a native compiler  for MIPS
> >using a cross compiler like mipsel-linux-gcc ?
> >
> >
> >Aladdin
>
> I think so.
> First build a cross compiler (with the libraries for the target system).
> Then use that to build a compiler for ther target system that'll run on the
> target system.
>
> Acutally, I have no idea how to configure the second compiler.
> Have a look at how canadian cross compiler are built, that might give you a
> hint (http://www.objsw.com/CrossGCC/FAQ-4.html#ss4.9).
> Someone with more experien in cross compiler might help here, also.

Some hacking the script for building canadian cross-compiler may help
(See CrossGCC FAQ for details).

For example I have used such way for building gcc-2.95.X as native compiler 
for i586-pc-msdosdjgpp under Linux (that time I used not installed
previously built cross-compiler to be run on build machine:
    CC_FOR_HOST="/foo/gcc/xgcc -B /foo/gcc/"
where foo was location of  Linux to DJGPP cross-compiler build directory).
Of course things could be slightly simplier when using installed 
cross-compiler.

But be sure to edit specs and change cross_compile to 0 later as specs are 
dumped by cross-compiler. 

Didn't have time to test all this stuff for gcc-3.0.X

Andris