Jivin Ben Kloosterman lays it down ...
> I have been working on uCLinux on Arm, since Mono has Arm with the idea of a
> prototype for a ucLinx + Mono base kernel to start with.
>
> I got it booting in an emulator but now have some issue loading the root rom
> file system (not a Question I will work it out) I'm quite impressed by the
> functionality in the lib/toolkit though.
>
> I just want to get a feel of how hard it will be to create an x86_64 arch eg
> if I copy the latest kernel , apply the ucLinux kernel patch will it compile
> the Kernel ? How much work is in the libs or will these mostly compile to
> x86_64 ? Obviously mono will be easier to compile under x86_64.
Building the uClinux-dist for x86/x86_64 is easy, you just need a good
uClibc config and a kernel config.
I am not sure there are any x86_64 targets in the tree, but plenty
of systems are x86:
grep -l i386 vendors/*/*/config.arch
so that may be a good start. You can just override the compiler options
in your config.arch to get a 64bit build happening. I have done it but
don't seem to have it hanging around any more and can't really recall the
gotchs. An example might look something like (with a big dose of maybe):
...
CPUFLAGS = -m64
CPU_CFLAGS = -m64
TARGETARCH = x86_64-linux
CONFIGURE_HOST = x86_64-linux
CROSS_COMPILE := some-tools-chain-prefix-here-
include $(ROOTDIR)/vendors/config/i386/config.arch
...
You may need to tweak vendors/config/i386/config.arch to get the settings
right for x86_64 builds though.
Cheers,
Davidm
--
David McCullough, david_mccullo...@mcafee.com, Ph:+61 734352815
McAfee - SnapGear http://www.mcafee.com http://www.uCdot.org
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