[gentoo-embedded] Multi target cross emerge wrapper

[gentoo-embedded] Multi target cross emerge wrapper

[solar]

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Hey I've been playing around with mega x-compiling all last week.
I mass merged every cross compiler crossdev can build at this time.
http://tinderbox.x86.dev.gentoo.org/cross-x86/
I've actually got a crontab setup that will auto merge new cross 
compilers as they become available.

I've got a little script to also automate much of the process of 
figuring out what is the right x-compiler settings and what 
variables should be set.
I'd appreciate it if a few of you could take it for a spin and give 
me feedback.
It should auto detect if you have a crossdev x-compiler installed and 
use it. If you have more than 1 it would try to merge the package for 
each target compiler you have. In my case I wanted to install 
busybox/portage-utils/libc into every ~/ROOT-$CTARGET

It has a few quarks with merging virtuals and so on but thats not easy 
to solve as long as portage itself depends on /etc/make.profile 
symlinks.


-- 
solar <solar@gentoo.org>
Gentoo Linux

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Re: [gentoo-embedded] Multi target cross emerge wrapper

[Eric G Ortego]

On 3/6/06, solar <solar@gentoo.org> wrote:
> Hey I've been playing around with mega x-compiling all last week.
> I mass merged every cross compiler crossdev can build at this time.
> http://tinderbox.x86.dev.gentoo.org/cross-x86/
> I've actually got a crontab setup that will auto merge new cross
> compilers as they become available.

I am building from  powerpc-unknown-linux-gnu-3.4.4 and so far I have
had crossdev build only:
arm-creole-linux-uclibc-3.4.5
i386-creole-linux-gnu-3.4.5
i386-creole-linux-uclibc-3.4.5

> I've got a little script to also automate much of the process of
> figuring out what is the right x-compiler settings and what
> variables should be set.
> I'd appreciate it if a few of you could take it for a spin and give
> me feedback.

I altered it to change the location of ROOT & PKGDIR and
It has been working well for me.

Mabe i am misunderstanding its purpose but when I tried to use
cmerge --libc --target i386-creole-linux-gnu

It was unable to build glibc for that target.
It looks like its trying to x-compile
cross-i386-creole-linux-gnu/glibc-2.3.6-r3 instead of sys-libs/glibc.
Though I don't think that matters much.

Calculating dependencies  ...done!
>>> emerge (1 of 1) cross-i386-creole-linux-gnu/glibc-2.3.6-r3 to
/var/distros/creole-linux-glibc/i386/

Ive have also tried:
cmerge --target i386-creole-linux-gnu sys-libs/glibc
and get an identical error

This is the error ...

checking installed Linux kernel header files... TOO OLD!
configure: error: GNU libc requires kernel header files from
Linux 2.0.10 or later to be installed before configuring.
The kernel header files are found usually in /usr/include/asm and
/usr/include/linux; make sure these directories use files from
Linux 2.0.10 or later.  This check uses <linux/version.h>, so
make sure that file was built correctly when installing the kernel header
files.  To use kernel headers not from /usr/include/linux, use the
configure option --with-headers.

Must mean that glibc needs virtual/os-headers so I tried to built them
for that target...

cmerge --target i386-creole-linux-gnu virtual/os-headers sys-libs/glibc

Yay! It worked!

> It has a few quarks with merging virtuals and so on but thats not easy
> to solve as long as portage itself depends on /etc/make.profile
> symlinks.

I've had some success getting around make.profile by making a broken symlink.
rm /etc/make.profile && ln -s /etc/make.profile /etc/make.profile
At the moment Portage doesn't seem to mind but I suppose that could change...

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