Hi,
I have just bought a chumby and wanted to play.  First I wanted to just see if I could build the kernel as explained on the developers site.
So I download vmware, got kubuntu-kde 4.7.
Next I did as was specified on the chumby site.
Installed toolchain GCC 4.1.2

Did following:

  $ mkdir kernel
  $ cd kernel
  $ tar zxvf linux-2.6.16-chumby-1.0.tar.gz
  $ cd linux-2.6.16
  $ cp arch/arm/configs/mx21ads_defconfig .config
  $ ARCH=arm BOARD=mx21ads CROSS_COMPILE=arm-linux- make oldconfig
    (select 'Y' when asked if you wish to build in the 224 color Turbochef logo)
  $ ARCH=arm BOARD=mx21ads CROSS_COMPILE=arm-linux- make

I got an error that make did not exist so.  I did an 'apt-get install make'.  It was happier.....

Now when I do a

  $ ARCH=arm BOARD=mx21ads CROSS_COMPILE=arm-linux- make

I get a lot of output with warnings and errors... Not sure if this is normal.....(not able to cut/paste from vmware)
Eventually terminates with:

arch/arm/kernel/asm-offsets.c:97: error: invalid application of 'sizeof' to incomplete type 'struct machine_desc'.

Any help would be appreciated.

Thanks