[Openev-discuss] How to use CPLDebug?

[<no...@ya...>]

Hi!
I find in the source code of OPENEV and GDAL, cpl help
function is widely used.
But i don't know how to use it.

For example, In the code of GPLDebug, there is 

const char  *pszDebug =
CPLGetConfigOption("CPL_DEBUG",NULL);

Where can i set this option to on or off?
Thanks.

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Remote Scensing Satellite Ground Station
Chinese Academy of Science

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