This section gives some hints about how to build third-party software for NAO.
Before starting, make sure the OpenNAO virtual machine already setup and running. If it is not the case:
As root, make the /etc/portage symlink point to:
To change, just run the following commands:
# Here, set optimizations for Atom (a.k.a. NAO V4):
su
rm -fi /etc/portage
ln -sfv /etc/portage.atom /etc/portage
exit
# do some developments...
# Then you can switch back to the generic settings:
su
rm -fi /etc/portage
ln -sfv /etc/portage.generic /etc/portage
exit
emerge is the package manager used by Gentoo, OpenNAO.
As usual, do not hesitate to checkout the emerge documentation http://www.gentoo.org/doc/en/handbook/handbook-x86.xml?part=2&chap=1#doc_chap3 or the its man page:
man emerge
This section gives the most often used emerge commands.
Warning
Never run:
emerge --sync
This will upgrade the whole system, all packages build after that may be not compatible with those from the OpenNAO system on the robot.
Searching in the package name (quick search):
emerge -s <some package>
Searching in the package description (a lot slower):
emerge -S <some package>
To build and install a package and all its dependencies, run (this requires root privileges):
su
emerge -ab <package name>
exit
After the building and installing some packagea in the virtual machine, the binary packages are locally stored in /home/nao/opennao-distro/packages.
The following command will show you all built packages:
tree ``/home/nao/opennao-distro/packages``
To check the content of an installed package:
equery files <package name>
To know which package a file belongs:
portageq owners / <full path of the file>