cross-compilation documentation

[Andrew Pinski]

On Sunday, Jun 22, 2003, at 12:31 US/Eastern, Dan Kegel wrote:

> Jim Wilson wrote:
>> Dan Kegel wrote:
>>> I understand that at the recent summit, cross-compilation
>>> documentation was listed as being an item of high priority.
>>> I've been working on this a bit; my current efforts are at
>>> http://kegel.com/crosstool
>> This looks useful.  It only covers the case where the target is 
>> GNU/Linux, but that is the case that is least well documented.
>
> The Linux target is interesting because you can build absolutely
> everything from virgin source tarballs.  It's a challenge, though:
> you have to install just the glibc headers so you can
> compile a bootstrap gcc so you can
> compile glibc so you can (finally!) compile gcc.
> That first step, installing bootstrap glibc headers, is a new
> and annoying prerequisite as of gcc-3.3. See
> http://sources.redhat.com/ml/crossgcc/2003-06/msg00170.html
> for my rant on the subject.

No you do not have install the headers because you can pass to gcc
--without-headers and that will make sure that you do not compile
the sources that require glibc's headers.

So total process is:
cd gccobjdir
.../gcc-sources/configure --without-headers --target=???-linux-gnu 
--prefix=??? --enable-languages=c
make
make install
cd glibcobjdir
.../glibc-sources/configure --target=???-linux-gnu --prefix=???
make
make install
cd gccobjdir
.../gcc-sources/configure --prefix=???


Thanks,
Andrew Pinski