Hi everyone,
Just wanted to report that I got Machinekit to successfully cross-compile
through a Debian Stretch debootstrap. It seems that the latest multiarch
support in stretch is good enough that (most) of the armhf libraries
installed correctly. This doesn't require qemu, so it takes a fraction of
the time to build. I was searching for more instructions on how to do a
cross-compile build, and came across this thread:
https://groups.google.com/forum/#!topic/machinekit/HWS807SS8ks which
requested a PR -- let me know if that's still preferred.
This is partially for my own benefit, but here's a short summary of the
commands I used to get it to work:
sudo debootstrap --components=main,contrib,non-free stretch {DEST_FOLDER}
http://deb.debian.org/debian/
I configured schroot to launch the system:
cat <<EOF > /etc/schroot/chroot.d/amd64-stretch
[amd64-stretch]
description=Debian Stretch (amd64)
directory={DEST_FOLDER}
root-users={USERNAME}
users={USERNAME}
type=directory
EOF
schroot -s amd64-stretch
Once inside, I configured multiarch and installed some basic packages:
sudo dpkg --add-architecture armhf
sudo apt update
sudo apt install gcc-arm-linux-gnueabihf g++-arm-linux-gnueabihf cython
pkg-config autoconf git libczmq-dev:armhf
git pull https://github.com/machinekit/machinekit.git
cd machinekit/src/
./autogen.sh
PKG_CONFIG_PATH="/usr/lib/arm-linux-gnueabihf/pkgconfig/" ./configure
--with-platform-beaglebone --host arm-linux-gnueabihf
Now the great dependency hunt begins -- basically just run the configure
line, and install the :armhf version of whatever library it complains
about. I can put together a more comprehensive list if requested.
The only library that requires special treatment is libboost-python-dev. If
you try to install the :armhf version of that library, it tries to replace
python with the armhf version, which will break the system. I went ahead
and just directly extracted only the contents of
/usr/lib/arm-linux-gnueabihf/ from
http://ftp.us.debian.org/debian/pool/main/b/boost1.62/libboost-python1.62.0_1.62.0+dfsg-4_armhf.deb
and
http://ftp.us.debian.org/debian/pool/main/b/boost1.62/libboost-python1.62-dev_1.62.0+dfsg-4_armhf.deb
I'm pretty sure I have a working armhf build -- I haven't had a chance to
run it on target yet because I need to figure out how to package it
(currently still in the RIP environment).
--
website: http://www.machinekit.io blog: http://blog.machinekit.io github:
https://github.com/machinekit
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