Re: [gentoo-alt] alt-prefix newbie question...

[Jeremy Olexa]

velociraptor wrote:
> On Tue, Jan 5, 2010 at 7:57 PM, Peter Ansell <ansell.peter@×××××.com> wrote:
>> 2010/1/6 Jeremy Olexa <darkside@g.o>:
>>> velociraptor wrote:
>>>> I was wondering, please, if the more experienced of you had any
>>>> suggestions for ebuild guides that were more oriented towards
>>>> alt-prefix users?  Everything I've looked at thus far is very much
>>>> oriented towards having a complete Gentoo system.  Barring that,
>>>> perhaps something a little more "step-by-step" tutorials, rather than
>>>> theoretically oriented?
>>>>
>>>> I would like to create my own ebuild for Netatalk as I know this
>>>> compiles fine on Solaris, and all the dependencies are currently
>>>> available the Solaris alt-prefix portage tree.
>>>>
>>>> Thanks in advance--
>>>> =Nadine=
>>>>
>>> Gentoo Prefix ebuilds are the same as Gentoo Linux except for the changes
>>> outlined in our techdocs[1]. It might be easier for people to answer if you
>>> had a specific questions.
>> I think it was a specific question. What steps do you use to create a
>> prefix ebuild. That document is hard to understand in my opinion and I
>> know what the prefix is supposed to do. It is definitely not a simple
>> step by step guide for someone wanting to create an ebuild themselves
>> as it is designed as a technical description to define the exact
>> semantics of "EPREFIX" and related variables in different situations.
>> It would do well to have some example ebuilds embedded into the
>> document that utilise each of the variables.

Yea, I'm not trying to be elitist or anything, but the changes needed 
for Gentoo Prefix ebuilds really require the understanding of Gentoo 
Linux ebuilds in general. Otherwise you don't know what D->ED really 
means, etc. Luckily, we provide a script that can do such conversions. 
http://www.gentoo.org/proj/en/gentoo-alt/prefix/ecopy.xml

>
> Thanks, Peter, that sums it up nicely.  Any step-by-step recipe type
> instance would be helpful, as I haven't been able to find something
> like that for Gentoo, either.  Don't get me wrong, Gentoo

Start here: http://devmanual.gentoo.org/ebuild-writing/index.html

> documentation excels in many ways beyond that of other Linux versions,
> but in the area of ebuilds, the documentation seems very much focussed
> on people with more development oriented skill sets.  I'm no
> developer, but I have been coaxing OSS to run on Solaris for a long
> while.

Then convert it to Gentoo Prefix. So, a basic example based on netatalk:

-	--with-bdb=/usr
+	--with-bdb=${EPREFIX}/usr

-rm -rf "${D}/etc/pam.d"
+rm -rf "${ED}/etc/pam.d"

-mv "${D}"/usr/include/netatalk{,2}
+mv "${ED}"/usr/include/netatalk{,2}

-rm "${D}"/usr/bin/timeout "${D}"/usr/share/man/man1/timeout.1 || die
+rm "${ED}"/usr/bin/timeout "${ED}"/usr/share/man/man1/timeout.1 || die

And, from a my quick glance now, that should be it. (besides adding your 
arch keyword)

Hope that clears some waters. Really the best documentation is examples, 
there are 2500+ examples in the prefix tree. :)
-Jeremy

> Maybe I should start by standing up a Gentoo VM and taking a look at
> the Linux ebuild of netatalk as a jumping off point.
>
> Best regards--
> =Nadine=
>