I was trying to build libgcc to make the missing functions like __udivsi3 mentioned earlier. Unfortunately, there's a bug in GCC which causes the libgcc build to fail:

eric@compaq:~/dev/tios/toolchain/gcc-4.4.0/libgcc$ make
Makefile:143: ../.././gcc/libgcc.mvars: No such file or directory
make: *** No rule to make target `../.././gcc/libgcc.mvars'.  Stop.

After looking into this a bit, it tuns out my build directions were lacking. The GNU people always do their builds from a seperate directory, and say that any problems arising from building in the source directory will not be fixed.

So, rather than fight the world on this, I'm changing the build instructions. The following are to be done from the top level of the GCC source directory.

  $ mkdir build
  $ cd build
  $ ../configure --prefix /home/eric/dev/tios/toolchain --target=tms9900 --enable-languages=c
  $ make all-gcc
  $ make install
  $ mkdir libgcc/build
  $ cd libgcc/build
  $ ../../../libgcc/configure --prefix /home/eric/dev/tios/toolchain/ --host=tms9900
  $ make
  $ make install