setting the pkgconfig path in macports.conf - how ?

[Arturo Rinaldi]

Which is the line to add to the *macports.conf* file regarding the 
*pkgconfig* utility ? By doing this i would be able to build from source 
without specifying the LDFLAGS and CPPFLAGS in the "configure" step.

I did some time ago but now I can't remember how to do it.....please 
help me. Thx in advance

Regards, Arturo.
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