How to find package dependencies from the package

[Pav Lucistnik]

Roman Neuhauser píše v st 14. 09. 2005 v 22:21 +0200:
> # lists at mcdermottroe.com / 2005-09-14 20:59:45 +0100:
> > How do I programatically find out the list of packages that a given
> > package depends on?
> > 
> > Given packages found at
> > ftp://ftp.freebsd.org/pub/FreeBSD/ports/i386/packages-stable/All/
> > and
> > http://pointyhat.freebsd.org/errorlogs/i386-5-packages-latest/All/
> > and so on, I have done the following:
> > 
> > pkg_info -r $package.tbz
> > 
> > This always claims that the package depends on nothing at all, even when
> > I'm fairly sure it does. For example for the net/poptop port I get the
> > following:
> > 
> > 20:55 root at platinum [~]# fetch
> > ftp://ftp.freebsd.org/pub/FreeBSD/ports/i386/packages-stable/All/poptop-1.1.4.b4_3.tbz
> > poptop-1.1.4.b4_3.tbz                         100% of   23 kB   49 kBps
> > 20:55 root at platinum [~]# pkg_info -r poptop-1.1.4.b4_3.tbz
> > Information for poptop-1.1.4.b4_3.tbz:
> > 
> > Depends on:
> > 
> > 20:56 root at platinum [~]#
> > 
> > This happens despite the fact that the entry at
> > http://www.freebsd.org/ports/net.html says:
> > 
> > poptop-1.1.4.b4_3 
> >         Windows 9x compatible PPTP (VPN) server
> >         Long description | Package | Sources | Main Web Site
> >         Maintained by: ports at FreeBSD.org
> >         Requires: expat-1.95.8_3, gettext-0.14.5, gmake-3.80_2,
> >         libgnugetopt-1.2, libiconv-1.9.2_1
> > 
> > This makes no sense to me, but I presume that either something is broken
> > somewhere or (way more likely) I am broken somewhere. :-)
> 
>     You obviously don't need gmake to install the binary package,
>     and expat, gettext, and libiconv are gmake's dependencies.
> 
>     Why you're not seeing libgnugetopt is a different matter, it's not
>     recorded in the +CONTENTS file; the port has it in RUN_DEPENDS,
>     though.
> 

libgnugetopt is only applicable to FreeBSD 4.X. Packages for 5.X and
newer don't contain this dependency.

-- 
Pav Lucistnik <pav at oook.cz>
              <pav at FreeBSD.org>

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