<div dir="auto">ah, thanks so much - maybe I'm seeing partial build problems on one machine, but at any rate this gives me enough to explore and figure it out.<div dir="auto"><br></div><div dir="auto">Best, Mike </div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sat, 1 Apr 2023, 21:03 Even Rouault, <<a href="mailto:even.rouault@spatialys.com">even.rouault@spatialys.com</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
  
    
  
  <div>
    <p>Michael,</p>
    <p>There have indeed been recent changes in const correctness of a
      few methods returning or accepting a OGRSpatialReference* (cf
      <a href="https://github.com/OSGeo/gdal/pull/7381" target="_blank" rel="noreferrer">https://github.com/OSGeo/gdal/pull/7381</a>), including
      OGRGeometryFactory::createmFromWkt().</p>
    <p>This requires a rebuild of code depending on the GDAL C++ API, as
      the GDAL ABI generally changes between feature versions.<br>
    </p>
    <p>Even<br>
    </p>
    <div>Le 01/04/2023 à 07:24, Michael Sumner a
      écrit :<br>
    </div>
    <blockquote type="cite">
      
      <div dir="ltr">Hi, 
        <div><br>
        </div>
        <div>I'm here to ask for help finding where this issue is. If I
          use an earlier build it still works (these are R packages sf
          and terra that are well tested against previous releases). </div>
        <div><br>
        </div>
        <div>Has something changed with the headers structure for
          OGRGeometryFactory perhaps? (I'm out of my depth for how to
          track this down).   If it's an issue on the R side I'll fix it
          there, but mostly I'm here to ask what has changed on the GDAL
          side to result in this symbol problem (or whatever it is I'm
          doing wrong). </div>
        <div><br>
        </div>
        <div>using latest
          build  24afc75d3c3f2c85621e8b8d83f54a73b1d3ad33 </div>
        <div><br>
        </div>
        <div>I see</div>
        <div><br>
        </div>
        <div>> library(sf)<br>
          Error: package or namespace load failed for ‘sf’ in
          dyn.load(file, DLLpath = DLLpath, ...):<br>
           unable to load shared object
          '/usr/local/lib/R/site-library/sf/libs/sf.so':<br>
            /usr/local/lib/R/site-library/sf/libs/sf.so: undefined
          symbol:
_ZN18OGRGeometryFactory13createFromWktEPKcP19OGRSpatialReferencePP11OGRGeometry<br>
          > library(terra)<br>
          Error: package or namespace load failed for ‘terra’ in
          dyn.load(file, DLLpath = DLLpath, ...):<br>
           unable to load shared object
          '/usr/local/lib/R/site-library/terra/libs/terra.so':<br>
            /usr/local/lib/R/site-library/terra/libs/terra.so: undefined
          symbol:
_ZN18OGRGeometryFactory13createFromWktEPKcP19OGRSpatialReferencePP11OGRGeometry<br>
          <div><br>
          </div>
          <div>Using a prior
            build eca6f7bf17fe500ef4c0ba9793e93ea305bab1fc it works. </div>
          <div><br>
          </div>
          <div>The offending code in terra is this (I think)</div>
          <div><br>
          </div>
          <div><a href="https://github.com/rspatial/terra/blob/ddcf84ce901a269ac13118d650efac16f89a8602/src/read_ogr.cpp#L694" target="_blank" rel="noreferrer">https://github.com/rspatial/terra/blob/ddcf84ce901a269ac13118d650efac16f89a8602/src/read_ogr.cpp#L694</a><br>
          </div>
          <div><br>
          </div>
          <div>In sf it is </div>
          <div><br>
          </div>
          <div><br>
          </div>
          <div><a href="https://github.com/r-spatial/sf/blob/main/src/gdal_read.cpp#L582" target="_blank" rel="noreferrer">https://github.com/r-spatial/sf/blob/main/src/gdal_read.cpp#L582</a><br>
          </div>
          <div>Thank you. </div>
          <div><br>
          </div>
          <div>Cheers, Mike</div>
          <div><br>
          </div>
          <div><br>
          </div>
          <span>-- </span><br>
          <div dir="ltr" data-smartmail="gmail_signature">Michael Sumner<br>
            Software and Database Engineer<br>
            Australian Antarctic Division<br>
            Hobart, Australia<br>
            e-mail: <a href="mailto:mdsumner@gmail.com" target="_blank" rel="noreferrer">mdsumner@gmail.com</a></div>
        </div>
      </div>
      <br>
      <fieldset></fieldset>
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</pre>
    </blockquote>
    <pre cols="72">-- 
<a href="http://www.spatialys.com" target="_blank" rel="noreferrer">http://www.spatialys.com</a>
My software is free, but my time generally not.</pre>
  </div>

</blockquote></div>