One of them was crosstool-ng. Sadly I could not get it to work on my ArchLinux-system either. All other approaches basically involved setting up a qemu-environment to do the compiling.
Sadly binfmt_misc refused to run arm-binaries via qemu-user-static on my archlinux-system, so I gave up setup an Ubuntu-VM.
Setting up such an environment in Ubuntu is surprisingly easy:
1. Install qemu and stuff
# apt-get install qemu-kvm-extras-static2. Install debootstrap
# apt-get install debootstrap3. setup basic environment
# mkdir virtual-pi # qemu-debootstrap --arch=armhf wheezy virtual-pi http://mirrordirector.raspbian.org/raspbian/It's important to use the raspbian-mirror here. Otherwise the compiled binaries cause Segmentation Faults when copied to the Pi.
4. setup build-environment
# chroot virtual-pi # echo deb http://mirrordirector.raspbian.org/raspbian/ wheezy main contrib non-free rpi >> /etc/apt/sources.list # echo deb-src http://mirrordirector.raspbian.org/raspbian/ wheezy main contrib non-free rpi >> /etc/apt/sources.list # apt-get update # apt-get install build-essentialStarting from here I was able to compile binaries to copy to the Raspberry Pi.