[Gdal-dev] Compiling ECW JPEG 2000 SDK 3.2 beta

[Armin Burger]

Tom,

if you try the 'old build' method then only libNCSEcwC.so is created, but
not libNCSEcw.so, even if the documentation says it should so. 

Armin

> --- Ursprüngliche Nachricht ---
> Von: Tom Lynch <tflynch at gmail.com>
> An: Bill Binko <bill at binko.net>
> Kopie: gdal-dev at remotesensing.org
> Betreff: Re: [Gdal-dev] Compiling ECW JPEG 2000 SDK 3.2 beta
> Datum: Tue, 21 Jun 2005 13:04:40 +0800
> 
> Hi Bill,
> 
> The problem is probably in GDAL ... the new "libecwj2" static build
> requires 
> a call to NCSecwInit() to be made prior to library use and a call to 
> NCSecwShutdown() be made following use. These initialize and shutdown 
> various resources (include those used by the mutexes) which would explain 
> the segfault you're seeing.
> 
> I will try to coordinate with Frank on getting the necessary changes into 
> GDAL - he may prefer to wait for a more stable version. In the meantime I
> am 
> actively working on providing more documentation and fewer hassles (and 
> probably an autoconf-based build - this was discussed a bit at OSG) as
> soon 
> as possible.
> 
> Cheers :-)
> 
> On 6/21/05, Bill Binko <bill at binko.net> wrote:
> > 
> > 
> > Armin,
> > 
> > Thanks: I tried the new build system to create libecwj2 and had it build
> > correctly. I update GDAL to use it. However, I get a segfault on opening
> > a ECW file with gdalinfo with this stack:
> > 
> > #0 0x405c1aa5 in NCSMutexBegin () from 
> > /home/bill/cvsroot/ecw32beta/lib/libecwj2.so.1
> > #1 0x40587474 in NCSecwGlobalLock () from 
> > /home/bill/cvsroot/ecw32beta/lib/libecwj2.so.1
> > #2 0x40503a16 in CNCSJPCGlobalLock::Lock () from 
> > /home/bill/cvsroot/ecw32beta/lib/libecwj2.so.1
> > #3 0x40503a7b in CNCSJPCGlobalLock::CNCSJPCGlobalLock () from 
> > /home/bill/cvsroot/ecw32beta/lib/libecwj2.so.1
> > #4 0x40520714 in CNCSJP2FileView::CNCSJP2FileView () from 
> > /home/bill/cvsroot/ecw32beta/lib/libecwj2.so.1
> > #5 0x40587b1d in CNCSFile::CNCSFile () from 
> > /home/bill/cvsroot/ecw32beta/lib/libecwj2.so.1
> > #6 0x400d0a17 in ECWDataset::Open () from /usr/lib/libgdal.so.1
> > #7 0x400d1110 in ECWDataset::OpenECW () from /usr/lib/libgdal.so.1
> > #8 0x4017963f in GDALOpen () from /usr/lib/libgdal.so.1
> > #9 0x08049ae7 in main ()
> > 
> > I am going to try the old build process and see if that is more
> > successful.
> > 
> > Bill
> > 
> -- 
> Tom Lynch
> Development, ER Mapper
> Phone: +61 8 93882900
> Fax: +61 8 93882901
> Email: tom.lynch at ermapper.com
> Web: http://www.ermapper.com
> Forums: http://forum.ermapper.com
> 

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