Re: using j1939

[Oliver Hartkopp <oliver.hartkopp@volkswagen.de>]

On 06.12.2011 13:37, Wolfgang wrote:
>> I'm afraid you lost me on this. Using your (cross)toolchain, you do
>> $ make
>> etc. to compile (&  install) the binaries.
>
> The guys from pengutronix (I am using ptxdist 2010.07.1) told me
> that I have to know how the things in the repositories
> have to be built.
>
>>> But now I am facing the next problem, what type of packages do
> I have to
> create for each particular repository?
>> I believe you're asking something for a specific build system, but I
>> do not know which one.
>> What build system do you use?
>
> found and using toolchain:
> '/opt/OSELAS.Toolchain-1.99.3/powerpc-603e-linux-gnu/
> gcc-4.3.2-glibc-2.8-binutils-2.18-kernel-2.6.27-sanitized/bin'
>

Hello Wolfgang,

when you build your BSP e.g. with

ptxdist images

in the directory 'build-target/linux-2.6.xx' your Linux kernel is 
unpacked, patched and compiled.

For a quick hack you can just try to update the files in

build-target/linux-2.6.xx/net/can/*
build-target/linux-2.6.xx/include/linux/can/*

with the files from Kurt (can-j1939-modules).

The you need to drop the compile stage with

pxtdist drop kernel.compile

And then build the stuff again (with 'ptxdist images')

Btw. the idea from Kurt with cross-compiling is also good.

But you should define the KERNELDIR= .../build-target/linux-2.6.xx then 
as THIS is the real kernel you are building for your system.

Regards,
Oliver