[gstreamer-bugs] [Bug 319482] New: altivec detections is broken.

GStreamer (bugzilla.gnome.org) bugzilla-daemon at bugzilla.gnome.org
Sat Oct 22 08:19:54 PDT 2005


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http://bugzilla.gnome.org/show_bug.cgi?id=319482
 GStreamer | gst-ffmpeg | Ver: 0.8.6

           Summary: altivec detections is broken.
           Product: GStreamer
           Version: 0.8.6
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: major
          Priority: Normal
         Component: gst-ffmpeg
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: kwm at rainbow-runner.nl
         QAContact: gstreamer-bugs at lists.sourceforge.net
                CC: all-bugs at bugzilla.gnome.org


Version details: 0.8.6.2

The code down below is from the gst-ffmpeg configure to look for hardware
altivec support. On a G4 this program runs like expected, exit without problems.
On a G3 it core dumps. But the funny part is that configure on that same 
G3 says:

--------------------------------
checking for fast integer types... yes
checking altivec.h usability... yes
checking altivec.h presence... yes
checking for altivec.h... yes
checking for support of Motorola Altivec API... yes  <== should be no.
checking for localtime_r... yes
--------------------------------
Smells like a logic bug somewhere.

=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
/* cc -maltivec -mabi=altivec -o altivec altivec-test.c */
#include <altivec.h>

int
main ()
{
  vector signed int v1, v2, v3;
  v1 = vec_add(v2,v3);
  return 0;
}

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