User:Hef/raspbian sdk: Difference between revisions
From Pumping Station One
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== Creating a sysroot == | == Creating a sysroot == | ||
=== compiler === | |||
Get a linaro cross compiler. For linux, there are official ones available, for OS X, I used http://www.welzels.de/blog/en/arm-cross-compiling-with-mac-os-x/comment-page-1/ | |||
I needed to use the gcc 4.8 version for my compiled binaries to work on raspbian. GCC 4.9 worked fine on alarmpi. | |||
== everything else == | |||
In this case a sysroot is just a copy of the important files for compiling built for the target system. It's also easier to just include a superset of the import files by grabbing pretty much everything. | |||
There are a couple ways to do this, but I just created a case sensitive OS X volume and did and rsyncd the rpi to that volume. | |||
<syntaxhighlight lang="bash"> | <syntaxhighlight lang="bash"> | ||
rsync -P -rt --ignore-errors --delete --copy-unsafe-links --links --exclude /home --exclude /tmp --exclude /proc --exclude /sys --exclude /srv --exclude /var/cache --exclude /dev --exclude /var/log --exclude /root --exclude /run --exclude /lost+found --exclude /var/tmp --exclude /var --exclude /usr/share --exclude /etc --exclude /usr/lib/ssl pi@raspbian.local:/ /Volumes/raspbian/ | rsync -P -rt --ignore-errors --delete --copy-unsafe-links --links --exclude /home --exclude /tmp --exclude /proc --exclude /sys --exclude /srv --exclude /var/cache --exclude /dev --exclude /var/log --exclude /root --exclude /run --exclude /lost+found --exclude /var/tmp --exclude /var --exclude /usr/share --exclude /etc --exclude /usr/lib/ssl pi@raspbian.local:/ /Volumes/raspbian/ | ||
</syntaxhighlight> | </syntaxhighlight> | ||
If you want a narrower approach, I suspect the important files are in | |||
* /usr/include | |||
* /usr/lib | |||
* /usr/local/include | |||
* /usr/local/lib | |||
* /lib | |||
* /opt/vc | |||
Another common approach is to create an nfs server an the rpi2 and just mount nfs:/ from the rpi2 on the dev machine. | |||
== Build qt5.5 for the rpi2 == | |||
<syntaxhighlight lang="bash"> | |||
./configure -v -nomake examples -nomake tests -release -opengl es2 -device linux-rasp-pi2-g++ -device-option CROSS_COMPILE=/usr/local/linaro/arm-linux-gnueabihf-raspbian/bin/arm-linux-gnueabihf- -sysroot /Volumes/raspbian -prefix /usr/local/qt5.5-raspbian -confirm-license -opensource | |||
</syntaxhighlight> | |||
build, takes 43 minutes, 32 seconds on my 8 core MBP. | build, takes 43 minutes, 32 seconds on my 8 core MBP. | ||
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make -j8 | make -j8 | ||
make install -j8 | make install -j8 | ||
</syntaxhighlight> | |||
once make install is run, there will be a a /volumes/rasbpian/usr/local/qt5.5-raspbian folder. copy that back to the pi in the same location | |||
First make a target location on the pi | |||
<syntaxhighlight lang="bash"> | |||
sudo mkdir /usr/local/qt5.5-raspbian | |||
chown pi:pi /usr/local/qt5.5-raspbian | |||
</syntaxhighlight> | |||
Copy the files from the host machine to the pi. | |||
<syntaxhighlight lang="bash"> | |||
rsync -auP /usr/local/qt5.5-raspbian pi@raspbian.local:/usr/local | |||
</syntaxhighlight> | </syntaxhighlight> | ||
