Re: J1939 + iMX6 + yocto

[Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be>]

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--- Original message ---
> Date: Tue, 8 Sep 2015 09:33:35 +0000
> From: pfifre.ext@orange.com
> To: Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be>
> CC: "linux-can@vger.kernel.org" <linux-can@vger.kernel.org>
> Subject: RE: J1939 + iMX6 + yocto
> 
> > I also updated iproute2-j1939, to a version that is equal to what yocto is using now.
> What do you mean? Do you patch iproute2 for using j1939? In that case how can I retrieve this iproute2-j1939 stack to use it in yocto?

See http://elinux.org/J1939#Sources

You need a patched iproute2 ip program to activate j1939 on a CAN
device. Altough I had an iproute2 ready, I could not get it easily
in yocto to compile. So I created iproute2-j1939 v3.16 branch,
which equals the iproute2 version that (my) yocto uses.
I then added the bitbake recipe (see attachment) which reuses
all patches applied to the stock iproute2 program.


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FILESEXTRAPATHS_prepend := "${THISDIR}/../../../poky/meta/recipes-connectivity/iproute2/iproute2:"
require ../../../poky/meta/recipes-connectivity/iproute2/iproute2.inc

SRC_URI = "git://github.com/kurt-vd/iproute2.git;protocol=git;branch=j1939-v3.16 \
           file://configure-cross.patch \
           file://0001-iproute2-de-bash-scripts.patch \
           file://0001-ip-link-Remove-unnecessary-device-checking.patch \
	   "


SRCREV = "be0377ecb5a2129fc7f2f8eabeae7f68d9f44e99"
S = "${WORKDIR}/git"

# CFLAGS are computed in Makefile and reference CCOPTS
#
EXTRA_OEMAKE_append = " CCOPTS='${CFLAGS}'"
ALTERNATIVE_PRIORITY = "120"
ALTERNATIVE_TARGET[ip] = "${base_sbindir}/ip.iproute2-j1939"

# install: only install the 'ip' tool itself, not the complete package.
# If the complete package is required, just install the regular iproute2 tool.
# PS: you are free to install the exact same iproute2 version.
do_install () {
	install -D ${S}/ip/ip ${D}${base_sbindir}/ip.iproute2-j1939
}