tk +quartz -x11 dependency on libX11. Why?

[Xu Xin]

On Fri, May 13, 2016 at 10:30 AM, Joshua Root <jmr at macports.org> wrote:
> On 2016-5-14 00:10 , Vincent Habchi wrote:
>>
>> Hi there,
>>
>> why does tk +quartz -x11 depend on libX11? I commented out that line in
>> the Portfile and it compiled fine.
>> Leaving that (dangling) dependency alive means installing a lot of cruft.
>
>
> As the comment in the quartz variant in the portfile says:
> # tk.h still includes and uses types from X11/Xlib.h
>
> - Josh
>
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But XQuartz also coming with X11/Xlib.h

- Xin