On 8/19/2013 4:50 AM, Hofer Andreas wrote: > Hi, > > is it possible to to compile linuxcnc on a x86 host platform for an ARM > Target platform?
Yes, it is possible to compile LinuxCNC for the ARM on an x86 platform. I do this when building the MachineKit images from scratch, which happens on an x86 system. You can find the build scripts (based on Robert C. Nelson's excellent work) on github: https://github.com/cdsteinkuehler/omap-image-builder Basically, an ARM root filesystem is built on the x86 system, and you chroot into that in order to compile. The fact that all the executable files in the chroot are for the ARM instead of the x86 is handled by transparent qemu system emulation. The "magic bit" is copying the qemu static emulation into /usr/bin on the chroot image: https://github.com/cdsteinkuehler/omap-image-builder/blob/master/scripts/chroot.sh#L136 ...once you do this, you can chroot into the ARM root filesystem on your x86 machine and uname -a will tell you you're running an ARM CPU! > I have installed the codesourcery toolchain. > Crosscompiling some Hello World application for ARM ist no problem, but > when i do this on linuxcnc there come some errors. Cross-compiling is another thing entirely. You will probably have to seriously work on the LinuxCNC build scripts if you want to be able to actually cross-compile (ie: build with native x86 tools, but generate ARM executable code). -- Charles Steinkuehler [email protected]
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