Bug 528158

Summary:	dev-libs/openssl: add USE=asm
Product:	Gentoo Linux	Reporter:	Joakim Tjernlund <joakim.tjernlund>
Component:	[OLD] Core system	Assignee:	Gentoo's Team for Core System packages <base-system>
Status:	RESOLVED FIXED
Severity:	enhancement	CC:	zerochaos
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description Joakim Tjernlund 2014-11-03 17:40:18 UTC

I do bringup on various PowerPC, currently T1042 from Freescale, and the
support for unimpl. instructions is not complete from time to time in Linux
so ssh-keygen -A just hangs when it tries various ppc ASM to optimize the
different crypto's.

Could Gentoo add USE flag "no-asm"(which translates to disable-asm) to
the openssl ebuild?

This avoids the use of ASM and then ssh-keygen and friends works
just fine.

Comment 1 Rick Farina (Zero_Chaos) gentoo-dev

2014-11-04 13:12:40 UTC

http://devmanual.gentoo.org/general-concepts/use-flags/

noblah style use flags are not permitted, possible an asm use flag that is default enabled but masked on ppc?  Would this need to be disabled on all ppc or should it be default on and you can disable it per processor if needed?

Comment 2 Joakim Tjernlund 2014-11-04 13:39:53 UTC

(In reply to Rick Farina (Zero_Chaos) from comment #1)
> http://devmanual.gentoo.org/general-concepts/use-flags/
> 
> noblah style use flags are not permitted, possible an asm use flag that is

I see, thanks

> default enabled but masked on ppc?  Would this need to be disabled on all
> ppc or should it be default on and you can disable it per processor if
> needed?

Yes, an asm USE flag defaulting to on for all archs. Then one can disable
asm for any arch when needed, just like libressl. I think libressl has
found asm to be slower in some cases.

Comment 3 SpanKY gentoo-dev

2015-03-21 11:01:09 UTC

should be all set now in the tree; thanks for the report!

Commit message: Add USE=asm so people can easily turn off assembly code for testing purposes
http://sources.gentoo.org/dev-libs/openssl/metadata.xml?r1=1.12&r2=1.13
http://sources.gentoo.org/dev-libs/openssl/openssl-1.0.2a.ebuild?r1=1.4&r2=1.5

Comment 4 Joakim Tjernlund 2015-03-21 12:15:48 UTC

(In reply to SpanKY from comment #3)
> should be all set now in the tree; thanks for the report!
> 
> Commit message: Add USE=asm so people can easily turn off assembly code for
> testing purposes
> http://sources.gentoo.org/dev-libs/openssl/metadata.xml?r1=1.12&r2=1.13
> http://sources.gentoo.org/dev-libs/openssl/openssl-1.0.2a.ebuild?r1=1.4&r2=1.
> 5

Tanks, now I don't need to hack the ebuild to rebuild openssl