Rebuilding OLPC kernel
This document describes building an OLPC kernel from the olpc-2.6 git repository or SRPM.
The OLPC kernel git repository
The OLPC kernel git repository can be checked out with the following command:
git clone git://dev.laptop.org/olpc-2.6
Alternatively, SRPMs are available at
http://dev.laptop.org/~dilinger/rpms/
The SRPM will place sources in /usr/src/redhat/SOURCES/olpc-2.6.tar.bz2
Building the git repository
After doing a checkout, one can build the git repository using the standard linux build process (ie, make config; make; make install). The recommended default config file is in the root of the git repository (.config).
Building the RPM
Building the RPM involves downloading the SRPM, installing it, and then running the rpmbuild command. The "dist" and "olpc" macros should be defined when building:
# rpm -ivh kernel-2.6.1*-20061026_dc5079fafb767e4olpc1.src.rpm # rpmbuild -ba --define "dist olpc1" --define "olpc 1" --target=i586 /usr/src/redhat/SPECS/olpc-2.6.spec
After the build finishes, the newly build RPMs will be in /usr/src/redhat/RPMS, and the build tree that was used will be in /usr/src/redhat/BUILD. To make quick changes to the source (for testing purposes), you can:
# cd /usr/src/redhat/BUILD/kernel-2.6.18/linux-2.6.18.i586 # patch -p1 < ~/somefix.patch # make # scp drivers/video/geode/gxfb_dcon.ko testboard: # ssh testboard "rmmod gxfb_dcon; insmod ./gxfb_dcon.ko"