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<p>A fix for that has been merged in the 9.6 branch (post 9.6.0, for
9.6.1) per <a class="moz-txt-link-freetext" href="https://github.com/OSGeo/PROJ/pull/4463">https://github.com/OSGeo/PROJ/pull/4463</a><br>
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<blockquote type="cite" cite="mid:rmiy0vdyi4z.fsf@s1.lexort.com">
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I also don't understand how C23 is handled if sharp embedding is turned
on. It would seem one has to end up passing --std for it, because a
compiler that can compile C23 does not necessarily default to it.</pre>
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Cf
<a class="moz-txt-link-freetext" href="https://github.com/OSGeo/PROJ/blob/41139273222d1a5937ff6abcf16350f6ed7db773/src/lib_proj.cmake#L429">https://github.com/OSGeo/PROJ/blob/41139273222d1a5937ff6abcf16350f6ed7db773/src/lib_proj.cmake#L429</a>
that selectively enables C23 for targets that need it when
IS_SHARP_EMBED_AVAILABLE_RES is set.<span
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<blockquote type="cite" cite="mid:rmiy0vdyi4z.fsf@s1.lexort.com">
<pre class="moz-quote-pre" wrap="">Does this work for others on compilers that don't support C23?</pre>
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If they are not too old yes. <span style="white-space: pre-wrap">
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<pre class="moz-signature" cols="72">--
<a class="moz-txt-link-freetext" href="http://www.spatialys.com">http://www.spatialys.com</a>
My software is free, but my time generally not.</pre>
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