To build glibc-2.3.2 we need to build against Linux 2.6 headers.
This based on information from
  http://sources.redhat.com/ml/crossgcc/2004-01/msg00186.html 

Inside Scratchbox:
  tar jxf linux-2.6.2*bz2 -C $HOME/

As root on your x86 system:
  cd /scratchbox/users/build/home/build/linux-2.6.2
  perl -pi -e 's?^ARCH.*=.*?ARCH = arm?;' Makefile
  perl -pi -e 's?^CROSS_COMPILE.*=.*?CROSS_COMPILE = arm-linux-?;' Makefile
  make menuconfig # set the System type to RiscPC and support StrongARM110
  make include/asm
  # I'm not sure what I'll do when/if ARMedslack supports more than the RiscPC.
  ( cd include/asm-arm/ ; ln -s asm-rpc arch )
  chown -R build.users .