[Pkg-scicomp-devel] Bug#629414: libcv2.1: opencv requires cmov instruction

Nobuhiro Iwamatsu iwamatsu at nigauri.org
Tue Jun 14 02:54:21 UTC 2011


severity 629414 important
thanks

Hi,

Thank you for your report.

> the version of libcv2.1 that comes with Debian stable should work on any
> i386 hardware, but does not. On the Vortex86DX (i586-compatible), it breaks
> due to the presence of (at least) a cmovg instruction (i686+).
>
> Program received signal SIGILL, Illegal instruction.
> 0xb7ef8968 in cvInitImageHeader () from /usr/lib/libcxcore.so.2.1
> (gdb) bt
> #0  0xb7ef8968 in cvInitImageHeader () from /usr/lib/libcxcore.so.2.1
> #1  0xb79f8e61 in CvCapture_FFMPEG::open(char const*) ()
>    from /usr/lib/libhighgui.so.2.1
> #2  0xb79f8fa1 in cvCreateFileCapture_FFMPEG(char const*) ()
>    from /usr/lib/libhighgui.so.2.1
> #3  0xb79e8fa2 in cvCreateFileCapture () from /usr/lib/libhighgui.so.2.1
> ....
>
> (gdb) x/i 0xb7ef8968
> 0xb7ef8968 <cvInitImageHeader+552>:     cmovg  0x150(%esp),%eax
> (gdb)

OK, I will check this.

Best regards,
  Nobuhiro

-- 
Nobuhiro Iwamatsu
   iwamatsu at {nigauri.org / debian.org}
   GPG ID: 40AD1FA6





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