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From: Raphael Kubo da Costa <kubito@gmail.com>
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Subject: Re: Help with first port Makefile
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Rod Person <rodperson@rodperson.com> writes:

> If I put: 
> 	USE_GNOME= yes
> in the Makefile everything builds great, but it checks for dependencies
> that aren't needed by Fotoxx. All I want to check is to make sure gtk20
> is installed. I have tried the following, but all of these fail to find
> gtk20, even though it is installed on my system.
>
> LIB_DEPENDS= gtk20:${PORTSDIR}/x11-toolkits/gtk20
>
> and
>
> LIB_DEPENDS= libgtk-x11-2.0.so:${PORTSDIR}/x11-toolkits/gtk20

I suggest taking a look at section 5.7.1 of the porter's handbook, which
describes the format for LIB_DEPENDS entries. You almost got it right on
the second try -- by taking a quick glance at
/usr/ports/Mk/bsd.gnome.mk, you can see this in line 281:

  gtk20_LIB_DEPENDS=      gtk-x11-2.0.0:${PORTSDIR}/x11-toolkits/gtk20

By the way, taking a look at the comments in the beginning of
bsd.gnome.mk is also a good idea, as it shows you can use something like

  USE_GNOME=gtk20

and be done with it.