Elegant way to hack port source

[Jason]

You can do it this way in the ports system:

http://www.freebsd.org/doc/en/books/porters-handbook/slow-patch.html

I handle all my patching for ports this way.

-jgh

On Fri, Mar 19, 2010 at 12:35:30PM -0400, Alejandro Imass thus spake:
>Hi,
>
>I need to modify a file from a port before building. Specifically, the
>sane-backends pnm.c driver has a bug and the folks at the original
>project has not fixed for a while. I need to modify pnm.c in the work
>directory before compiling. What is an elegant way of doing this? If I
>make and then modify, the main make file does not see the change made
>in the file and will not recompile. And since there is no actual
>makefile in the work subdirectory I can't compile there either!
>
>There must be a FreeBSD way of dealing with modifying a port source
>before compiling. Please advise.
>
>Thanks in advance,
>Alejandro Imass
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