[gdal-dev] ECW support on Fedora Linux - error

[Jeff McKenna]

You might add your notes (and even attach your patch) to the ECW
buildhints wiki page for GDAL yourself:
http://trac.osgeo.org/gdal/wiki/ECW  (otherwise emails are long forgotten)

Works great for your FOSS4G karma as well!

Thanks,

-jeff



On 12-09-12 5:09 PM, Johan Hedin wrote:
> I had the same problem with libecwj2-3.3 and Fedora 17 64-bit
> yesterday. I tracked this down and it is a bug in libecwj2 itself
> regarding wchar_t handling in the file NCSPrefsXML.cpp.
> 
> I have attached a patch to this mail to fix this. It is a super simple fix :-)
> 
> Another way around this is to just define the environment variable
> NCS_USER_PREFS to point to some bogus file name. If this is done the
> code take another path in libecwj2 and the bug is not triggered. But
> fixing the bug is of course better.
> 
> BTW, this has apparently always been a bug and I guess that is has
> started to show now due to updates to libstdc++, c++ compilers etc. In
> the beginning of Fedora 16 this worked but on a up-to-date Fedora 16
> today the behaviour is the same as on Fedora 17.
> 
> All distributions that are updating c++ and/or libstdc++ in the future
> will probably see this bug as well. My patch is not fedora specific.
> 
> Pleas report back here if this patch is working for you as well!
> 
> (Small disclaimer: I'm recreating the patch from my head. I don't have
> the running instance of gdal with ECW support on this computer)
> 
> Regards Johan
> 
> 2012/9/11 lanufabi <dasfabirad at googlemail.com>:
>>  In reply to this post by jkadlec
>> Hey,
>>
>> I compiled libecwj2 and gdal 1.9.1 on arch linux like "jkadlec" did and get
>> the same error when i use gdalinfo for ecw files:
>> terminate called after throwing an instance of 'std::length_error' what():
>> basic_string::_S_create
>>
>> gdalinfo --formats puts out that ECW is supported.
>>
>> What can I do to identify the problem? Do you know a solution?
>>
>> Thanks
>>


-- 
Jeff McKenna
MapServer Consulting and Training Services
http://www.gatewaygeomatics.com/