[Digikam-devel] Re: Status of face detection

[Gert Kello]

I must correct myself once again... after several days of frustration
trying do compile the whole bunch which different compilers seems like
the problem was indeed a bug in OpenCV...

1. SJLJ is correct compiler for the KDE installed as per tutorial at
http://www.digikam.org/drupal/node/525
2. The OpenCV SSE support seems to be buggy, as per
http://code.google.com/p/pyopencv/wiki/Installation_OpenCV
  I modified my CMakeLists.txt lines 248-249, from
        set(ENABLE_SSE ON CACHE BOOL "Enable SSE for GCC")
        set(ENABLE_SSE2 ON CACHE BOOL "Enable SSE2 for GCC")
to
        set(ENABLE_SSE OFF CACHE BOOL "Enable SSE for GCC")
        set(ENABLE_SSE2 OFF CACHE BOOL "Enable SSE2 for GCC")

Would be nice if it is mentioned somewhere..

Gert

On 2 November 2010 22:24, Gert Kello <gert.kello at mail.ee> wrote:
> I finally got it working. Used emerge to build the whole KDE, had some
> troubles...
>
> For me it seems like the error was caused from mixing SJLJ unwinding
> and DW2 unwinding libraries. I think that emerge (or whatever) uses
> DW2, and I had to disable one (prebuilt AFAIK) component in OpenCV
> that was using SJLJ one as linking failed. And that
> "check_exception_spec" suggests the same origin.
>
> Gert
>
> On 29 October 2010 12:44, Marcel Wiesweg <marcel.wiesweg at gmx.de> wrote:
>>
>>
>> 0x0cfce20a in void cv::cvt_<float, double>(cv::Mat const&, cv::Mat&) () from
>> C:\KDE\bin\libcxcore210.dll
>>
>> Thread 29 (Thread 1128.0x14c):
>> #0  0x0cfce20a in void cv::cvt_<float, double>(cv::Mat const&, cv::Mat&) ()
>> from C:\KDE\bin\libcxcore210.dll
>> #1  0x0cef157c in check_exception_spec(lsda_header_info*, std::type_info
>> const*, void*, long) () from C:\KDE\bin\libcxcore210.dll
>>
>> From this info, seems to be a crash in OpenCV. The backtrace is this short,
>> which means it is somehow incomplete, and I dont know what
>> check_exception_spec is, I dont find it in the OpenCV source code.
>> Something Windows specific?
>