why only one component exists in OMXComponentList ?

Hi there,

I am trying to add display component(VFDC) to the decode demo app located at /ezsdk/omx_05_01_01_80/packages/ti/omx/demos/decode/. 
For some reason, OMX_GetHandle(&pHandleDisp,(OMX_STRING) "OMX.TI.VPSSM3.VFDC", pDispData, pDispData->pCb) always failed. 
I surprisingly found that only VDEC component exists in OMXComponentList[], all the other components are missing. 
That's why I cannot get the handle of VFDC in C program. I also noticed that the component is fenced by #ifdef in omxcore_cfg.c file. 
I searched all the source code including makefiles but still didn't have a clue  where those __BUILD_xxxx_ were defined.
 As an experiment, I manually removed all #ifdefs and wish to bring other component back. Surprisingly again, 
I still only saw one component (VDEC) in the list. 

So I am out of idea, any help from TI's support team will be appreciated.     

OMX_COMPONENTLIST OMXComponentList[] =
{
  //#ifdef _BUILD_vfdc_
  {
    OMX_VFDC_COMP_NAME,
    VFDC_COMP_INIT_FNPTR,
    0,
    {{0}}
  },
  //#endif
  ...
}