kernel build

root@Adam-Ubuntu1110-VB:/usr/src/gen8/buildroot# ls
Config.in  docs         linux  Makefile  project  TODO
dl         ext_modules  local  package   target   toolchain
root@Adam-Ubuntu1110-VB:/usr/src/gen8/buildroot# make
make[1]: Entering directory `/usr/src/gen8/linux'
make[2]: arm-linux-gcc: Command not found

  ERROR: Kernel configuration is invalid.
         include/linux/autoconf.h or include/config/auto.conf are missing.
         Run 'make oldconfig && make prepare' on kernel src to fix it.


  WARNING: Symbol version dump /usr/src/gen8/buildroot/linux/Module.symvers
           is missing; modules will have no dependencies and modversions.

  CC [M]  ../ext_modules/tda19989/hdmi/tda998x_cec.o
/bin/sh: arm-linux-gcc: command not found
make[5]: *** [../ext_modules/tda19989/hdmi/tda998x_cec.o] Error 127
make[5]: *** Waiting for unfinished jobs....
  CC [M]  ../ext_modules/tda19989/hdmi/comps/tmdlHdmiCEC/src/tmdlHdmiCEC.o
/bin/sh: arm-linux-gcc: command not found
make[5]: *** [../ext_modules/tda19989/hdmi/comps/tmdlHdmiCEC/src/tmdlHdmiCEC.o] Error 127
make[4]: *** [../ext_modules/tda19989/hdmi] Error 2
make[3]: *** [../ext_modules/tda19989] Error 2
make[2]: *** [_module_../ext_modules] Error 2
make[1]: *** [sub-make] Error 2
make[1]: Leaving directory `/usr/src/gen8/linux'
make: *** [ext_modules] Error 2
root@Adam-Ubuntu1110-VB:/usr/src/gen8/buildroot#