Hi Srinivasa Rao Wunnimani,
1. define DEBUG_PRINT_DISABLE as 0
Normally, if you want to define the according symbols, you can defined it in the project options, take IAR project as an example:

But, if you want to define DEBUG_PRINT_DISABLE as 0, just don't define it, leave it in default is OK.
2. give examples of using blhost -d/debug usage.
About the debug usage, you can find it from the blhost printf information.
The following is the command usage on my side:

Take get property as an example:

Wish it helps you!
If you still have question, please let me know!
Have a great day,
Kerry
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