how to set CACHEDEBUG ?

sunpeng wrote:

I noticed there is a piece of code:
#ifdef CACHEDEBUG
#define InitCatCache_DEBUG2 \
do { \
elog(.......
} while(0)
#else
#define InitCatCache_DEBUG2
#endif

Now I'd like to set CACHEDEBUG, how to set up it ? where ?
thanks

You compile with that flag, like:

cc -DCACHEDEBUG

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