BeagleBox

Looks like this requires libav first, and the omapfbplay doesn't have a released tarball so you have to get it from git.

libav:
This should be just like ffmpeg - it's a forked version of that project
http://libav.org/
v0.6.2: http://libav.org/releases/libav-0.6.2.tar.gz
clone: git clone git://git.mansr.com/libav;protocol=git libav; cd libav && git checkout v0.6.2

omapfbplay:
git clone git://git.mansr.com/omapfbplay;protocol=git omapfbplay

compile (still a work in progress for how to compile the code from git under Buildroot):
PATH=/home/mjhammel/src/ximba/bb/bld/crosstool-ng-1.8.2.bld/install/bin:$PATH \
CROSS_COMPILE=arm-unknown-linux-uclibcgnueabi- \
make OMAPFB=y \
ROOT=/home/mjhammel/src/ximba/bb/bld/crosstool-ng-1.8.2.bld/install/arm-unknown-linux-uclibcgnueabi/sys-root

Added libav package to buildroot 2011.02, however there is one line in the .mk file that is questionable (-target-os=linux, hard coded value for config option). I need to check with the Buildroot mailing list to verify it is the correct way to handle it.

omapfbplay compile command: make PATH=$bin:$PATH OMAPFB=y ROOT=$root CROSS-COMPILE=arm-unknown-linux-uclibcgnueabi
root: buildroot/output/target

The build fails because av_log_set_flags(AV_LOG_SKIP_REPEATED) is not in libav. So I just commented it out. But then it appears I may be missing some additional components:

omapfb.c:34:26: warning: linux/omapfb.h: No such file or directory

This is found in ./include/linux/omapfb.h in the kernel tree. So I need to specify where to find that, too, on the command line.

Found that I needed to install the kernel headers along with the modules and firmware or else I get an warning while compiling omapfbplay. So I added that to the kernel build and rebuilt the kernel. Now the command to compile omapfbplay looks like this:

make PATH=/home/mjhammel/src/ximba/bb/bld/crosstool-ng-1.8.2.bld/install/bin:$PATH OMAPFB=y ROOT=$root CROSS_COMPILE=arm-unknown-linux-uclibcgnueabi- LINUX=/home/mjhammel/src/ximba/bb/bld/linux-omap-2.6.38/headers

This is nearly complete, but it doesn't find the libav libraries:

arm-unknown-linux-uclibcgnueabi-gcc --sysroot=/home/mjhammel/src/ximba/bb/bld/buildroot-2011.02/output/target omapfbplay.o pixfmt.o time.o magic-head.o sysclk.o sysmem.o avcodec.o omapfb.o magic-tail.o -lavformat -lavcodec -lavutil -lm -lpthread -lrt -o omapfbplay
/home/mjhammel/src/ximba/bb/bld/crosstool-ng-1.8.2.bld/install/bin/../lib/gcc/arm-unknown-linux-uclibcgnueabi/4.4.3/../../../../arm-unknown-linux-uclibcgnueabi/bin/ld: crt1.o: No such file: No such file or directory
collect2: ld returned 1 exit status