The right way to depend on a package's extra feature

[Adam Weinberger]

Vasil Dimov wrote:
> Hi list,
> 
> What it the right way to make a port that depends on other port, but
> that other port must be built with some extra feature?
> 
> For example, imagine we have port "A" that installs
> /foo/bar/great_feature only if it is build with
> 'make WITH_GREAT_FEATURE=yes'
> 
> Then we have port "B" that happens to depend on /foo/bar/great_feature.
> 
> You see, there are two problems here:
> 
> 1. We cannot pass WITH_GREAT_FEATURE=yes via the RUN_DEPENDS technology,
>    only the target may be specified: RUN_DEPENDS=/file:portdir:target
>    needed command: make -C portdir WITH_GREAT_FEATURE=yes target
> 
> 2. Port A may have already been installed without WITH_GREAT_FEATURE=yes
>    This will cause make WITH_GREAT_FEATURE=yes install in A's dir to fail
>    with error "already installed"
>    needed command: portupgrade -f -m WITH_GREAT_FEATURE=yes /var/db/pkg/A
>    (huh! we used portupgrade, not very nice...)
> 
> Any suggestions? Did I miss something?

I have that same problem with deskutils/gourmet. It needs a metakit 
built with python support, but python support is disabled by default. 
You can see what I've done as a kludge in deskutils/gourmet/Makefile, 
but the best solution would be to separate metakit into a master/slave
port thing so you can just depend on metakit-python and be done with it.

Does this parallel your situation any?

# Adam


-- 
Adam Weinberger
adamw at magnesium.net || adamw at FreeBSD.org
adamw at vectors.cx    ||   adamw at gnome.org
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