Bug 213780 – Wrong CPU instruction set USE flags and ewarns in mplayer ebuilds

• Product: Gentoo Linux
• Status: RESOLVED FIXED

[Description nm (RETIRED) 2008-03-18 06:20:07 UTC]

The mplayer ebuilds have an incorrect warning message about ssse3.

"pni" (Prescott New Instructions) is *NOT* the same thing as "ssse3". PNI is the same as SSE3, a common feature of all AMD64 and Intel Core/Core2 chips.

SSSE3 is a completely different instruction set, one that AMD64 chips do *not* support. It's found on newer Intel chips, and was an interim instruction set between SSE3 and SSE4/SSE4.1/SSE4.2.

Please fix the ebuilds by changing the USE flags to SSE3 (or if it really is for SSSE3, then forget about it working on AMD64 chips; it's Intel-only), and by altering the warn to say "pni/sse3".

For reference:
http://en.wikipedia.org/wiki/SSSE3
http://en.wikipedia.org/wiki/SSE3
http://en.wikipedia.org/wiki/SSE4

[Comment 1 Jakub Moc (RETIRED) 2008-03-18 07:32:43 UTC]

I really don't understand what's your trouble with the ebuild??? (And yeah it really is SSSE3, not SSE3).

$ euse -i ssse3
[-    ] ssse3 (media-video/mplayer):
faster floating point optimization for SSSE3 capable chips (Intel Core 2 and later chips)

[Comment 2 Ben de Groot (RETIRED) 2008-03-18 10:25:18 UTC]

The way the warning is written now suggests that pni is the same as ssse3, which it isn't, or that there would be a useflag for pni, which there isn't. We should just drop the "pni/" part in the warning.

[Comment 3 Steve Dibb (RETIRED) 2008-03-18 14:34:12 UTC]

Josh,

Just following upstream's naming scheme:

$ ./configure --help | grep -i ssse3
  --enable-ssse3            enable SSSE3 [autodetect]

Also, the ewarn was already removed in latest mplayer ( mplayer-1.0_rc2_p26258 )

[Comment 4 Steve Dibb (RETIRED) 2008-03-18 14:56:51 UTC]

Okay well, I thought it was removed, so fixed on both, now.