pkg/26243: USE_MMX should be in BUILD_DEFS only on x86

[geos%epost.de@localhost]

>Number:         26243
>Category:       pkg
>Synopsis:       USE_MMX should be in BUILD_DEFS only on x86
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    pkg-manager
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Sun Jul 11 09:49:00 UTC 2004
>Closed-Date:
>Last-Modified:
>Originator:     Georg Schwarz
>Release:        current pkgsrc
>Organization:
>Environment:
IRIX lorenz 5.3 08031225 IP20 mips
>Description:
USE_MMX is only meaningful on x86 platforms and should thus only there be 
included in BUILD_DEFS (where used). So far the following file unconditionally 
add it to BUILD_DEFS:

devel/libast/Makefile
emulators/snes9x/Makefile
graphics/imlib2/Makefile
multimedia/ffmpeg/Makefile

x11/eterm/Makefile adds USE_MMX to BUILD_DEFS only when it is not "NO", which 
is also incorrect.

multimedia/avidemux/Makefile and multimedia/xawtv/Makefile seem to imply they 
compile on x86 only but do not explicitly say so.

>How-To-Repeat:

>Fix:
Enclose BUILD_DEFS+= USE_MMX by  .if empty(USE_MMX:M[Yy][Ee][Ss]) ... .fi
in the affected Makefiles.
In case there packages work on x86 anyway, this should be denoted instead.

>Release-Note:
>Audit-Trail:
>Unformatted: