> During regression tests if i want to disable some features like
> trampolines i can give -DNO_TRAMPOLINES as an compiler flag.
> 
> Do i have similar flags for profiling and PIC?

You might like to check the manual.  All of the answers you're looking
for (well, okay, most) will be there:

  http://gcc.gnu.org/onlinedocs/

Cheers, Ben

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