Buikldroot driven xmz firmware generation toolchain.

First you have to check out the buildroot. Buildroot is an git submodule. So first checkout the submodule and update to the version this repo holds.

git submodule init
git submodule update

Now you have to create the basic buildroot Makefiles. Call these commands:

cd buildroot
make O=../make BR2_EXTERNAL=../custom xmz_bananapro_defconfig

Finaly change into the make dir (You have to call ALL buildroot commands from here!) and call a defconfig for the needed board. In this example we call the configuration for the Lemaker BananaPro board.

cd ..
cd make
# make menuconfig
make

buildroot Source code of buildroot. Only call update tasks from here. See the '#Update buildroot' capter below.

custom Custom buildroot configuration files.

make "Out of the Buildroot tree" - Configuration https://buildroot.org/downloads/manual/manual.html#outside-br-custom

releases Releases should placed here.

download Download cache of buildroot.

cache Compiler Cache (ccache) of buildroot.

Buildroot itselfs can be updated easily via the following commands.

It's strong adverticed to use the buildroot version, configured in the master branch of this repo!

cd ~/buildroot
git pull
# git branch -a
git checkout <LATEST_BRANCH>
make O=../make BR2_EXTERNAL=../custom help

# umount sdcard
sudo umount /dev/mmcblk0p{1,2}
# burn image
dd if=images/sdcard.img |pv|sudo dd bs=1M of=/dev/mmcblk0

First create a time stamp. Then clean linux and uboot build dirs. Then build the time command prints the time stats after the build.

set TSTAMP build-(date +%F_%T_%N)
make linux-dirclean
make uboot-dirclean
time -p make | tee $TSTAMP.log
echo log file>>> $TSTAMP.log

To view the latest build.log

vim (ls -a build*.log|tail -n1)