Hi Brian,
The "GDAL native libs installation on different Linux OSs" is a hot topic.
Summarizing some key points:
- Right now GeoServer depends on ImageIO-EXT GDAL plugins which still rely
on GDAL 1.9.2.
- Some users did experiments to build and use higher versions of GDAL (1.x,
2.x).
- Supporting different GDAL versions on a different OS usually requires
GDAL manual build on the hosting system itself to make sure there no
linking issues or conflicts with the required third party libraries and
dependencies.
There is a couple of discussions about this topic:
https://sourceforge.net/p/geoserver/mailman/message/34924220/
https://sourceforge.net/p/geoserver/mailman/message/34982403/
Hope they can provide you some more hints.
Additional note: In the past, we have also noticed that SWIG 1.3.36 seemed
a good version to produce the expected signatures with respect to others
which were resulting in mismatching methods.
Please, let us know if you still need assistance or clarifications on that.
Cheers,
Daniele
On Wed, Jun 8, 2016 at 8:54 PM, brian.blain <[email protected]>
wrote:
> This started out as a user issue but I think I have gone pretty far down
> the
> rabbit hole and I have a few questions that I wonder if someone on this
> mailing list could answer.
>
> Goal: Deploy the GeoServer war including the GDAL plugin on WebLogic 12.1.3
> on RHEL7.
>
> Initially, I was able to get this setup working on Windows using the
> binaries from ImageIO-ext. The instructions were pretty clear and things
> worked after a day or so of figuring things out. It was when I moved to
> deploying onto a RHEL7 server that I started having issues. ImageIO-ext
> also
> does not provide binaries for RHEL7 so I was taking a gamble. Once GDAL and
> the java bindings installed, booting up GeoServer gave me errors like this
> one for all the GDAL types.
>
> java.lang.UnsatisfiedLinkError: org.gdal.gdal.gdalJNI.SWIGDriverUpcast(J)J
> at org.gdal.gdal.gdalJNI.SWIGDriverUpcast(Native Method)
> at org.gdal.gdal.Driver.<init>(Driver.java:15)
> at org.gdal.gdal.gdal.GetDriverByName(gdal.java:264)
>
> In the log, there was also a record of the GDAL version being detected and
> it never threw the "no gdaljni in java.library.path" so I could assume that
> the JNI detection was working but there was a different link failing. Of
> course, there is some hindsight in my email here and I spent way more time
> than I wanted to on this issue. After digging and learning more about what
> SWIG was doing to wrap GDAL and all the jar dependencies from ImageIO-ext I
> finally ran across that SWIG 2 was installed and that there was a major
> change between 1.x and 2.x versions, particularly in the class signatures
> created by the java.swg template.
>
> swig-1.3.40/Lib/java/java.swg
>
> PTRCTOR_VISIBILITY $javaclassname(long cPtr, boolean cMemoryOwn) {
> super($imclassname.SWIG$javaclassnameUpcast(cPtr), cMemoryOwn);
> swigCPtr = cPtr;
> }
>
> swig-2.0.0/Lib/java/java.swg
>
> PTRCTOR_VISIBILITY $javaclassname(long cPtr, boolean cMemoryOwn) {
> super($imclassname.$javaclazznameSWIGUpcast(cPtr), cMemoryOwn);
> swigCPtr = cPtr;
> }
>
> Notice that they changed the order of the SWIG Upcast method which resulted
> in the java class have an incorrect signature. (I have no idea why a
> underscore got in there.) The error from above is looking for a method that
> does not exist.
>
> protected Driver(long cPtr, boolean cMemoryOwn) {
> super(gdalJNI.Driver_SWIGUpcast(cPtr), cMemoryOwn);
> swigCPtr = cPtr;
> }
>
> The end result was that I uninstalled SWIG 2.x and ended up building SWIG
> 1.3.40 from source. SWIG 1.x couldn't even figure out the RHEL7 host name.
> I
> have no idea what other things might not work. Finally, I was able to get
> the GDAL image types detected in the GeoServer stores with SWIG 1.3.40 and
> GDAL 2.1.0. Even though I found the source for ImageIO-ext on github, they
> include libraries where the source is not available, or at least I couldn't
> find it. ImageIO-ext doesn't seem to be upgraded for SWIG 2.x or 3.x. For
> example, the dependency imageio-ext-gdal-bindings seems pretty important
> but
> it is stuck at GDAL 1.9.2 and most likely still on the old SWIG api.
>
>
> https://github.com/geosolutions-it/imageio-ext/search?utf8=%E2%9C%93&q=imageio-ext-gdal-bindings
>
> So, where do I go with my questions? It doesn't seem like I could even
> patch
> this on my own because of hidden libraries. I have no idea if all the
> features will even work on RHEL7 because I can't even trust the linking. Is
> there a reason why everything is stuck on old libraries and old OS? Is this
> the right board for these kind of issues? If not, what would be?
>
>
> Thanks for reading,
> Brian
>
>
>
>
> --
> View this message in context:
> http://osgeo-org.1560.x6.nabble.com/GDAL-on-RHEL7-questions-tp5270708.html
> Sent from the GeoServer - Dev mailing list archive at Nabble.com.
>
>
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==
GeoServer Professional Services from the experts! Visit
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==
Ing. Daniele Romagnoli
Senior Software Engineer
GeoSolutions S.A.S.
Via di Montramito 3/A
55054 Massarosa (LU)
Italy
phone: +39 0584 962313
fax: +39 0584 1660272
http://www.geo-solutions.it
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