On lundi 13 novembre 2017 09:00:38 CET Andrea Peri wrote: > Hi, > I have a trouble with my qgis-server. > > I have a debian stretch version 64bit where the libpng is at 1.6.26 version. > > When I compile the gdal from source, it use its internal 1.2.56 version and > all is ok. > > After, when I go to compile the qgis. Its cmake finding system found the > system libpng 1.6.26 and the qgis is compile using it. > > But after this, when try to use the qgis-server (wms server) and asking the > png images. > It go in error . > The log explain me that the > qgis is compiled using the libpng-1.6.26 but is running using the > lib-1.2.56 version (of gdal). > > I'm not able to say to qgis to compile using the libpng of gdal, so I like > to try to say at the gdal to compile not using its internal version, but > instead using the 1.6.26 from system.
Andrea, Yes, you should definitely compile GDAL against system libpng if you plan to use it with other libs/apps that also link against system libpng. Normally the base ./configure of GDAL should fetch your system libpng (unless you explicitly specify --with-png=internal). I've just verified it on Stretch Even -- Spatialys - Geospatial professional services http://www.spatialys.com
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