[HEADSUP] Please convert your ports to new options framework

[Vitaly Magerya]

Bryan Drewery wrote:
> Another common question is how to check if an option is not set. We all
> try !${PORT_OPTIONS:MFOO} to find it does not work.

    $ cat Makefile
    all:
    .if ${LIST:MFOO}
    	@echo HAVE FOO
    .endif
    .if !${LIST:MFOO}
    	@echo NO FOO
    .endif

    $ make LIST=FOO
    HAVE FOO

    $ make LIST=BAR
    NO FOO

Seems to work fine. What am I missing?