DMAI apps example cann't build!

Hi 

    I work on DVSDK 4.03, when I rebuild:

dvsdk_04_03/dmai_2_20_00_15/packages/ti/sdo/dmai/apps

   command: make all

    the log is such as:

root@ubuntu:/work/dvsdk_04_03/dmai_2_20_00_15/packages/ti/sdo/dmai/apps# make all

Executing make in subdirectory audio_decode1/...
make[1]: Nothing to be done for `all'.

Executing make in subdirectory audio_decode_io/...
make[1]: Nothing to be done for `all'.

Executing make in subdirectory audio_decode_io1/...
make[1]: Nothing to be done for `all'.

Executing make in subdirectory audio_encode1/...
make[1]: Nothing to be done for `all'.

   Why? How should I do to build these app examples?

   Thanks very much!