Failed to build graphviz: command execution failed

Ryan Schmidt ryandesign at
Thu Sep 3 22:51:59 UTC 2020

On Sep 3, 2020, at 17:37, Michael Newman wrote:

> On Sep 3, 2020, at 22:01, Ryan Schmidt wrote:
>> There have been a few other reports lately of graphviz build failures for other reasons; if you're experiencing a graphviz build failure, see if one of them applies.
> I spent some time searching around, but all I found were other instance of graphviz related tickets, the details of which are beyond my ability to comprehend.
> When graphviz builds, I get this warning:
> Warning: cltversion: The Command Line Tools are installed, but MacPorts cannot determine the version.
> Warning: cltversion: For a possible fix, please see:

Follow the instructions at that URL.

> Error: Failed to build graphviz: command execution failed
> Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_graphics_graphviz/graphviz/main.log for details.
> Error: Follow to report a bug.
> The log file referred to is rather large (almost 1MB) and incomprehensible to me.

Show me the log. File a ticket at and upload the compressed log there. If it's the same problem as in another ticket, I'll mark it as a duplicate and you can see what to do in that ticket.

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