<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div></div><div>Hi Andreas,</div><div>GCC 7 is our current requirement for Dune core master. The issue was, that one CI was configured to explicitly use -std=c++14. Thus the failure.</div><div><br></div><div>Bye</div><div>Christoph</div><div><br>Am 19.03.2020 um 20:04 schrieb Dedner, Andreas <<a href="mailto:A.S.Dedner@warwick.ac.uk">A.S.Dedner@warwick.ac.uk</a>>:<br><br></div><blockquote type="cite"><div>
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Still it would be good to clarify the g++ requirements - or should 7.3 work?<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Christoph Grüninger <<a href="mailto:foss@grueninger.de">foss@grueninger.de</a>><br>
<b>Sent:</b> 19 March 2020 18:08<br>
<b>To:</b> Dedner, Andreas <<a href="mailto:A.S.Dedner@warwick.ac.uk">A.S.Dedner@warwick.ac.uk</a>><br>
<b>Cc:</b> <a href="mailto:dune@lists.dune-project.org">dune@lists.dune-project.org</a> <<a href="mailto:dune@lists.dune-project.org">dune@lists.dune-project.org</a>><br>
<b>Subject:</b> Re: [Dune] g++ support</font>
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<div>Hi Andreas,</div>
<div>Probably an outdated CI config. Since <a href="https://gitlab.dune-project.org/core/dune-common/-/merge_requests/786">https://gitlab.dune-project.org/core/dune-common/-/merge_requests/786</a> it works for me. I rebased and force-pushed my branch and all
went green.</div>
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<div>Bye</div>
<div>Christoph</div>
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Am 19.03.2020 um 18:40 schrieb Dedner, Andreas <<a href="mailto:A.S.Dedner@warwick.ac.uk">A.S.Dedner@warwick.ac.uk</a>>:<br>
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Hi.</div>
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Hope you are all well...</div>
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I wanted to check, what the required g++ version now is?</div>
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In dune-common/README.md it says >=7 but for a few days now std::optinal is used in dune-common and that seems to fail with 7.3</div>
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which is the compiler our CI in Stuttgart is using with the Debian 10</div>
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image.</div>
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Best</div>
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Andreas<br>
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