Some notes regarding the CodeSourcery toolchain

• Ensure you build on a machine compatible with your eventual host
  e.g. If the toolchain will eventually be wrapped for scratchbox and used on a 32-bit VMWare image,
  don't build it on a 64-bit machine....

The notes below are for the 2007q1-21 release - they may apply to later versions.

Building glibc 2.7.

• If satisfying the headers requirement with those of the compiler we need to link in the fixed includes
  - the include-next extension misses them.
  • cd /lib/gcc/arm-none-linux-gnueabi/4.2.0/include
  • ln -s ../include-fixed/limits.h
• As of 2.7 glibc still uses syscalls deprecated for EABI.
  Possible work rounds include:
  • Comment out some, or all, the undefs in /arm-none-linux-gnueabi/libc/usr/include/asm/unistd.h
    then do one of
    • Accept the problems arising when the syscalls are made
    • Satisfy the likely calls in the kernel
    • Satisfy all the calls in the kernel
  • Amend the glibc code to call EABI supported syscalls

Mistakes I made you can avoid

• The glibc-ports-2.7/sysdeps goes in glibc-2.7/ports, not glibc-2.7/sysdeps i.e.
  cp -r glibc-port-2.7/sysdeps glibc-2.7/ports/
  is correct.

Rebuild toolchain from source

Adapt the supplied arm-2007q1-21-arm-none-linux-gnueabi.sh script as follows

• Comment out tasks for any hosts you dont want e.g. mingw32
• Comment out any tasks for packages not supplied e.g. gdil
• If necessary change the CC, CXX host lines throughout to use your host gcc.
• Change the mkdir commands to mkdir -p so you can rerun the script. [Later scripts have this done]
• Replace the directory names as required
  - Use absolute paths. I found this easier than fiddling to get the shell variable substitution correct.

-- PeterPearse - 09 Nov 2007