Pass options to dependency

[Matthew Seaman]

On 05/06/2017 10:56, Eugene Grosbein wrote:
> How can a port (its Makefile) pass a build option to BUILD_DEPENDS?
> For example, devel/ragel has:
> 
> DOCS_USE=               TEX=latex:build
> DOCS_BUILD_DEPENDS=     fig2dev:print/transfig
> 
> And "make -C /usr/ports/devel/ragel all-depends-list" shows HUGE
> list of its dependencies completely unneded for a port that just
> needs to use BUILD_DEPENDS=ragel:devel/ragel
> 
> The reason is that bsd.options.mk includes PORT_OPTIONS+=  DOCS
> unless user option NOPORTDOCS is set.
> 
> Is it possible to specify something like OPTIONS_EXCLUDE=DOCS
> for BUILD_DEPENDS entity?
> 

Generally what you would do is create a slave port of the dependency
with the options settings you require.  Doing this to turn off the DOCS
option would be unprecedented though.

I believe the consensus nowadays is that DOCS should control installing
documentation that takes little or no effort to generate.  If you need
to install a huge dependency tree in order to generate documentation,
then that should be controlled using a different option.  Whether to
have that option default to either ON or OFF is at the discretion of the
maintainer.

So my advice here is open a PR to get devel/ragel modified, and in the
mean time try and ignore all those unwanted dependencies while you work
on your own port.

	Cheers,

	Matthew


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