Hi Leho! Thanks for many links, Jude Pereira's work totally missed my search results.
In fact I focused on playing with Qemu. First approach was to emulate whole board (using qemu-system-arm) which works so far best of all, but is painfully slow (but not more than other options). As for chrooted environment, I used armv5tel stage3 tarballs available at my university site: http://ftp.fi.muni.cz/pub/linux/gentoo/releases/arm/autobuilds/current-stage3-armv5tel/- it is one of official gentoo mirrors and stage3 tarball contains everything necessary already compiled, including fully operational perl 5.12.3. I had no problems emerging any other packages, but as I said, compilation takes ages. Then I tried to move contents of my emulated folder to my ARM target machine and on the machine try to chroot inside it. No problem with compiling/emerging in chrooted environment directly on target machine, but speed is maybe even lower. The last approach I tried was using binfmt support to be able to run arm binaries on my x64 box without the necessity to emulate whole board - I hoped to have much better performance than when using qemu-system-arm. Unfortunately it seems that qemu-arm does not support some system calls or whatever. I untared stage3 on my x64 machine, chrooted into the folder and tried running emerge - simple arm binaries were running fine, but emerge ended with errors like "qemu: Unsupported syscall: 242"... And last of all, I started documenting my approach on google sites: https://sites.google.com/site/czernitko/cross-compilation/cross-compiling-perl-for-arm-architecture Peter 2011/10/16 Leho Kraav <l...@kraav.com> > i have managed to cross-compile a pretty complete stage3 for arm i believe > with perl-5.10.1 from > http://git.overlays.gentoo.org/gitweb/?p=proj/embedded-cross.git;a=tree;f=dev-lang/perl > > overall the cross-compile experience was a nightmare, esp. re perl and > python. many packages obscurely fail, but not enough for you to immediately > give up. so it keeps sucking you back in and waste even more time. at the > time i discovered that embedded-cross overlay had mostly done all the > difficult work for me, but it seems it is no longer updated for recent > stuff. i think guys in #gentoo-embedded told me it is a lot of effort to > patch these large packages like perl and python to sanely cross-compile, and > since i think their product thing didn't work out too well, they weren't > going to sink any more time into maintaining for newer versions. > > but jude pereira i believe is doing something with arm stages at least > semi-actively > http://judepereira.com/blog/gentoo-linux-uclibc-stage3-2010-for-embedded/and > it is definitely a lot of fun booting pretty much full blown gentoo on > things like Nokia N8x0 internet tablets > https://github.com/slonopotamus/n8x0-overlay > >
