Re: [gentoo-dev] virtual/sctp to choose the right SCTP lib for Linux/FreeBSD?

[Joshua Kinard <kumba@gentoo.org>]

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On 04/06/2014 16:06, Joshua Kinard wrote:
> On 04/06/2014 04:49, Ulrich Mueller wrote:
>>>>>>> On Sat, 05 Apr 2014, Joshua Kinard wrote:
>>
>>> I've attached a first draft of virtual/sctp/sctp-0.ebuild, which
>>> passes repoman checks, but I think it needs to be made
>>> multilib-aware. Additionally, that means lksctp-tools probably needs
>>> some multilib-magic applied. I am not finding a solid guide on
>>> properly upgrading an ebuild to become multilib-aware. Can one of
>>> the multilib experts check things and let me know what is needed if
>>> people agree this is a good way to go down?
>>
>> This doesn't answer your multilib question, but I believe that
>> kernel_* is not needed in IUSE:
>>
>>> IUSE="kernel_linux kernel_FreeBSD static-libs"
>>
>> KERNEL is both in USE_EXPAND and USE_EXPAND_IMPLICIT of
>> profiles/base/make.defaults, therefore it's implicit in EAPI 5.
> 
> Thanks, I removed those and IUSE as well, since it's empty.
> 
> 
>> I'd also omit all empty variable assignments (like HOMEPAGE=""),
>> they are no longer necessary.
> 
> I derived this ebuild from virtual/udev's (as the leftover comment implied).
>  Someone might want to remove the empty vars there as well.  Perhaps repoman
> should check for empty vars like HOMEPAGE/SRC_URI/IUSE and flag as a warning?
> 

Derp, since this is a virtual for a linkable library, set DEPEND first, then
RDEPEND to ${DEPEND}.

While FBSD is the only other official non-Linux port (I think OBSD/NBSD are
still only in Prefix?), should REQUIRED_USE be set to limit this virtual to
kernel_linux and kernel_FreeBSD?

Hmm, and further thinking, if we had a kFreeBSD variant, things would get
more interesting.  Someone would probably have to abstract the SCTP lib code
out of freebsd-lib to work in that environment, since everything would be
running on top of a glibc userland.  I wonder if Debian's run into that yet...

-- 
Joshua Kinard
Gentoo/MIPS
kumba@gentoo.org
4096R/D25D95E3 2011-03-28

"The past tempts us, the present confuses us, the future frightens us.  And
our lives slip away, moment by moment, lost in that vast, terrible in-between."

--Emperor Turhan, Centauri Republic

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# Copyright 1999-2014 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Header: $

EAPI=5

DESCRIPTION="Virtual to select net-misc/lksctp-tools or sys-freebsd/freebsd-lib for userland SCTP lib support"

SLOT="0"
KEYWORDS="~alpha ~amd64 ~mips ~ppc ~ppc64 ~sparc ~x86 ~amd64-fbsd ~sparc-fbsd ~x86-fbsd"

DEPEND="|| (
		kernel_linux? ( net-misc/lksctp-tools )
		kernel_FreeBSD? ( sys-freebsd/freebsd-lib )
	)"
RDEPEND="${DEPEND}"