[SOLVED] Crossdev with non-Gentoo toolchain?

[lost+found]

I just got a Cherry Mobility M-1007 from my cousin to play with. I did a firmware upgrade, and rooted the tablet. Also the manufacturer made the kernel source code, and the toolchain available... My Gentoo pavlov reaction says: COMPILING!!!

[Hu]

First check if the released tools will allow you to build and run even trivial programs. If a "Hello, world" program works, then you can begin work on integrating it into the Gentoo package manager.

[lost+found]

@Hu

Thanks for the advice! I was afraid to hear "no", but maybe it's possible more or less. I think I better start finding out. First target: get "Hello, world!" up and running.

To Be Continued...


Update: Marking the thread "solved" for now.

The first test, trying to compile "int main(){return 0;}", gives some wrong built-in defaults/paths/missing libraries. I see now, that my toolchain isn't even there. A dmesg on the tablet shows 4.5.1 (Sourcery G++ Lite), probably due to the firmware upgrade. Kernel version is the same though and still usable. No, this is not the way to go. I'll proceed with letting crossdev build the toolchain...

[lost+found]

Maybe useful info for some people searching the forums.

I decided to search for "Sourcery G++ Lite", that dmesg on the tablet listed in the kernel line. It's a complete toolchain, and has it's own ebuild in Portage (although it seems to be an abandoned package): dev-embedded/sgpp-lite-arm-linux-bin. I expect less problems using this package, when building a kernel/modules from the provided sources.

This is how I mixed it into crossdev. It looks a bit ugly, and maybe it's not 100% perfect, but it seems to work well enough to build working packages.

I followed the Gentoo embedded handbook, and made some symlinks to the Sourcery binary package: