| 1 |
So I opened Bug #506046 last week to enable support of DTLS over SCTP |
| 2 |
(Stream Control Transmission Protocol) in OpenSSL via a configure flag. But |
| 3 |
this means in the ebuild, I have to check for the right userland SCTP |
| 4 |
library to depend against: |
| 5 |
|
| 6 |
# Have the sub-libs in RDEPEND with [static-libs] since, logically, |
| 7 |
# our libssl.a depends on libz.a/etc... at runtime. |
| 8 |
LIB_DEPEND="gmp? ( dev-libs/gmp[static-libs(+)] ) |
| 9 |
+ sctp? ( |
| 10 |
+ kernel_linux? ( net-misc/lksctp-tools[static-libs(+)] ) |
| 11 |
+ kernel_FreeBSD? ( sys-freebsd/freebsd-lib ) |
| 12 |
+ ) |
| 13 |
|
| 14 |
Right now, this check is rather limited, but down the road, if SCTP usage |
| 15 |
increases, we'd have to duplicate this specific check more often. Doubly so |
| 16 |
if Gentoo/OpenBSD or NetBSD support gets off the ground and a package exists |
| 17 |
that supports SCTP, but needs the appropriate userland-lib to link against. |
| 18 |
|
| 19 |
I think the best way to future proof against this is to add a virtual/sctp |
| 20 |
package that picks between the appropriate userland library for SCTP |
| 21 |
support, depending on the kernel_* USE flags. kernel_linux pulls in |
| 22 |
net-misc/lksctp-tools and kernel_FreeBSD will simply depend on |
| 23 |
sys-freebsd/freebsd-lib (FBSD is actually the reference implementation of SCTP). |
| 24 |
|
| 25 |
I've attached a first draft of virtual/sctp/sctp-0.ebuild, which passes |
| 26 |
repoman checks, but I think it needs to be made multilib-aware. |
| 27 |
Additionally, that means lksctp-tools probably needs some multilib-magic |
| 28 |
applied. I am not finding a solid guide on properly upgrading an ebuild to |
| 29 |
become multilib-aware. Can one of the multilib experts check things and let |
| 30 |
me know what is needed if people agree this is a good way to go down? |
| 31 |
|
| 32 |
Otherwise, I'll commit the change to OpenSSL above and resolve that bug. |
| 33 |
|
| 34 |
Thanks!, |
| 35 |
|
| 36 |
-- |
| 37 |
Joshua Kinard |
| 38 |
Gentoo/MIPS |
| 39 |
kumba@g.o |
| 40 |
4096R/D25D95E3 2011-03-28 |
| 41 |
|
| 42 |
"The past tempts us, the present confuses us, the future frightens us. And |
| 43 |
our lives slip away, moment by moment, lost in that vast, terrible in-between." |
| 44 |
|
| 45 |
--Emperor Turhan, Centauri Republic |
Archives