<div dir="ltr">Hello <span style="color:rgb(0,0,0)">Michael,</span><div><span style="color:rgb(0,0,0)"><br></span></div><div><span style="color:rgb(0,0,0)">It seems you are trying to build a complex thing but refer to PostGIS as a specific compiled windows binary. If you are taking PostGIS apart for your application, you should be doing that on source code and build system level. </span></div><div><span style="color:rgb(0,0,0)"><br></span></div><div><span style="color:rgb(0,0,0)">The source code is available at </span><span style=""><a href="https://github.com/postgis/postgis">https://github.com/postgis/postgis</a> and inspecting the build system scripts will let you understand how exactly PostGIS chooses which library to use - that will let you point the things to the versions of libraries you want, and not the builder of your binary.</span></div><div><span style=""><br></span></div><div><span style=""><br></span></div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Wed, Feb 24, 2021 at 7:58 PM Morelli Michael <<a href="mailto:M.Morelli@mitech.ch">M.Morelli@mitech.ch</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
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<p class="MsoNormal">Hi folks,<u></u><u></u></p>
<p class="MsoNormal"><span style="color:black"><u></u> <u></u></span></p>
<p class="MsoNormal">We would like to use PostGIS as backend (PostGres with Extension GIS enabled).
<span lang="FR-CH">There we transform with ST_Transform sql-procedure etc.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="FR-CH">And on the client side (client-applications) we would like to install/distribute the proj-lib for client-transformations. Here we directly access the proj.dll C-Interfaces for transformations. So basically we then have
two different proj-sytems (one on the client and the other in PostGIS-DB).<u></u><u></u></span></p>
<p class="MsoNormal">But the projections (proj.db SQLLite) should be the same and also the proj.dll versions.<u></u><u></u></p>
<p class="MsoNormal"><u></u> <u></u></p>
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<li class="gmail-m_-1183309581007764405MsoListParagraph" style="color:black;margin-left:0cm">
<span>When installing the PostGIS extension on the server, is the db-table
<b>spatial_ref_sys</b> directly generated from the file: C:\Program Files\PostgreSQL\13\share\contrib\postgis-3.0\proj\<b>proj.db</b> ? Or is it generated from the CSV-files in C:\Program Files\PostgreSQL\13\<b>gdal-data?</b><u></u><u></u></span></li><li class="gmail-m_-1183309581007764405MsoListParagraph" style="color:black;margin-left:0cm">
<span>Why does the PostGIS extension not install the newest version of proj (Version 7) and Version 6.x instead?<u></u><u></u></span></li><li class="gmail-m_-1183309581007764405MsoListParagraph" style="color:black;margin-left:0cm">
<span>Where is the best way to download the proj.dll and proj.db for the client applications? Should we copy them from the PostGIS-Installation-Directory ?<u></u><u></u></span></li><li class="gmail-m_-1183309581007764405MsoListParagraph" style="color:black;margin-left:0cm">
<span>Is the PostGIS <b>libproj-15.dll </b>the same like
<b>proj.dll</b>?<u></u><u></u></span></li></ol>
<p class="MsoNormal"><span style="color:black"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="color:black">Thank you for your help and interest!<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:black"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="color:black">Kind regards,<u></u><u></u></span></p>
<p class="MsoNormal"><span style="color:black">Michael Morelli<u></u><u></u></span></p>
<p class="MsoNormal"><u></u> <u></u></p>
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</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail_signature"><div dir="ltr">Darafei "Komяpa" Praliaskouski<br>OSM BY Team - <a href="http://openstreetmap.by/" target="_blank">http://openstreetmap.by/</a><br></div></div>