r266416 | bjk | 2014-05-18 17:05:54 -0400 (Sun, 18 May 2014) | 14 lines

Document some user-settable make variables in ports.7

This is not a comprehensive list, as the variables themselves are spread
out over multiple files, but it is a start.

Add a section to make.conf noting that variables may be set there that
affect ports builds, but refer to ports.7 and elsewhere for the actual
listing; any listing in make.conf.5 would likely become out of date
fairly quickly.

PR:             docs/189199
Reviewed by:    bdrewery (previous version)
Approved by:    hrs (mentor)

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