Hi,
I could fix the problem.
Somehow it had to do with my self-compiled gdal library. When i changed
from JPEG=internal to JPEG=external QGIS server suddenly worked again
with reading and writing JPEG data. Strange - but it helped. Maybe it
helps for someone who runs into similar problems ...
Thanks,
Andreas
On Wed, 26 Dec 2012 13:24:50 +0100, Andreas Neumann wrote:
Hi again,
Here is what I got as output from gdb:
Program received signal SIGSEGV, Segmentation fault.
0x00007ffff6393b7c in jpeg_CreateDecompress (cinfo=0xba4768,
version=80, structsize=656) at libjpeg/jdapimin.c:37
37 ERREXIT2(cinfo, JERR_BAD_LIB_VERSION, JPEG_LIB_VERSION,
version);
so it seems there is a bad JPEG library used by QGIS server?
Any ideas what is wrong with my system?
Thanks,
Andreas
On Tue, 25 Dec 2012 13:32:07 +0100, Marco Hugentobler wrote:
Hi Andreas
I'm using 12.04 as well and it works for me with qgis_mapserv.fcgi
linked against libjpeg.so.8
Could you check, if you have Qt's jpeg plugin installed
(/usr/lib/x86_64-linux-gnu/qt4/plugins/imageformats/libqjpeg.so) ?
It
is contained in the package libqtgui4 and linked against
libjpeg.so.8
too.
Regards,
Marco
On 25.12.2012 12:54, Andreas Neumann wrote:
Hi,
I upgraded my server from Ubuntu 10.04 LTS to 12.04 LTS. I
recompiled QGIS server with the new qt and JPEG libraries and the
compile and install went fine. However, since the upgrade, QGIS
server cannot read and write JPEG files anymore. QGIS server crashes
whenever the source (WMS) or the output involves a JPEG read or
write. This is regardless of the input raster source (could be TIFF
or WMS). PNG and PNG8bit output seems to work fine.
I googled for qt and JPEG problems, but could not find much that
sounded similar to my problem.
Using ldd I saw that qgis_mapserv.fcgi is linked against
libjpeg.so.8 - is this a problem? Should it be linked against
libjpeg.so.62?
Thank you if you have any idea about my problem.
Andreas
--
--
Andreas Neumann
Böschacherstrasse 10A
8624 Grüt (Gossau ZH)
Switzerland
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