15.3. WRKDIR

Do not write anything to files outside WRKDIR. WRKDIR is the only place that is guaranteed to be writable during the port build (see compiling ports from CDROM for an example of building ports from a read-only tree). If you need to modify one of the pkg-* files, do so by redefining a variable, not by writing over it.

For questions about the FreeBSD ports system, e-mail <ports@FreeBSD.org>.
For questions about this documentation, e-mail <doc@FreeBSD.org>.