CPU=i386
../rtems/configure --target=${CPU}-rtems4.11 \
  --prefix=/users/joel/llvm/install \
  CC="clang -ccc-host-triple ${CPU}-rtems4.11 -ccc-gcc-name ${CPU}-rtems4.11-gcc" \
  AR=${CPU}-rtems4.11-ar \
  AS=${CPU}-rtems4.11-as >c.log 2>&1

echo $?
exit $?
 && \
make -j4 >b.log 2>&1 && \
make install >i.log 2>&1 
  CC_FOR_BUILD="clang " \
  CC_FOR_TARGET="clang -ccc-host-triple ${CPU}-rtems4.11 -ccc-gcc-name ${CPU}-rtems4.11-gcc" \