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<p>Actually looking at the wiki page, I've just updated it since it
would not have worked if the system PROJ is >= 6.0. The update
consists in adding -DPROJ_INTERNAL_CPP_NAMESPACE to CXXFLAGS when
building PROJ so that C++ symbols of the "internal" proj don't
clash with the ones of the system PROJ (that was Docker build
recipees already did)<br>
</p>
<div class="moz-cite-prefix">Le 26/08/2021 à 17:35, Even Rouault a
écrit :<br>
</div>
<blockquote type="cite"
cite="mid:ad13095d-5929-2e31-611a-4c96777fcaf0@spatialys.com">
<p>Patrick,</p>
<p>I guess this is at least relevant for the ubuntu-full config
that uses libspatialite from the distro. This libspatialite must
link against proj 6.3.1 from the Ubuntu 20.04 distro, whereas
the GDAL we build will link against the PROJ built in the image,
so without that trick, crashes would happen.</p>
<p>Even<br>
</p>
<div class="moz-cite-prefix">Le 26/08/2021 à 17:21, Patrick Young
a écrit :<br>
</div>
<blockquote type="cite"
cite="mid:CADXYQQ6kwff0PRVnz+vX4SF-2WBNFJM81=M2GDC67ckqnR05vA@mail.gmail.com">
<div dir="ltr">Hi,
<div><br>
</div>
<div>I was curious how relevant building an internal PROJ
library is these days as described in this note</div>
<div><br>
</div>
<div><a
href="https://trac.osgeo.org/gdal/wiki/BuildingOnUnixGDAL25dev"
moz-do-not-send="true">https://trac.osgeo.org/gdal/wiki/BuildingOnUnixGDAL25dev</a><br>
</div>
<div><br>
</div>
<div>I noticed GDAL's docker builds still do this. Are there
some common dependencies that still use the older PROJ?</div>
<div><br>
</div>
<div>Many thanks!</div>
<div>Patrick</div>
</div>
<br>
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