Run OpenGL demos on Mini2440

Mini2440-Arm9 has no graphic hardware accelerator. In order to make opengl program run on it, I think we need do following things:

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Install a crossing toolchain
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• Download openmoko cross-compiler instead of that from FriendlyArm to avoid 'Segmentation fault'.

• Extract the package to root

>tar zxvf arm920t-eabi.tgz –C /

• Export path of toolchains, run also add following line in /root/.bashrc

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Cross-compile mesa library (openGL in Linux)
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• Download and unpack mesa libraries. See the tutorial here (http://www.mesa3d.org/)
• You need to use arm-gcc instead of your host gcc to build the mesa library. Max just create a symbolic link refer to the arm-gcc, by

>ln -s /opt/toolchains/arm920t-eabi/bin/arm-linux-gcc /usr/bin/gcc
>cd ~/project/mesa/Mesa-7.5.1
>./configure --host=arm-linux --prefix=/usr/local/mesa
>make
>make install

• Then, you can find the library and include files at /usr/local/mesa.

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Copy the demo to target board
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My mini2440 is remotely loaded by nfs network on my host machine. The root directory of mini2440 is located at /disk1/nfs/root/ on my host machine. Just copy some demo executables (you can find at for examples Mesa-7.5.1/progs/xdemos) to /disk1/nfs/root/. And start the demos by minicom. See the tutorial.