Thanks all for your help.

We found two versions of libproj and two of GDAL. This was due to PostGIS pulling in newer versions.

PostGIS came from a repository and mapserver was compiled. We are currently trying to figure out the best way to resolve this.

One other question; Is the old php mapscript and  new swig php mapscript mutually exclusive?  In other words, do we build MapServer with one or the other?  That is my guess.

Thanks,

*Worth Lutz*


On 4/16/2021 6:37 PM, Even Rouault wrote:

Not sure.  I would also take a look inside your /cgi-bin/ dir and execute: ldd mapserv   (and look for any conflicts with libs) but that's an awful guess, not easy to see (but I've been here before with PROJ/GeoTIFF/Spatialite lib conflicts, in this case I'm not sure what lib).

I strongly concur with Jeff's suggestion of using ldd mapserv. Segmentation fault after the end of a plain & simple "mapserv -v" really smells a binary that links to 2 versions of the same lib, and clashes during deallocation of static variables (although I would expect it to also crash in all situations, but behaviour might be quite unprectible). And the usual suspects are indeed the ones listed by Jeff.



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