On 2026-02-22 at 23:28:55 UTC-0500 (Mon, 23 Feb 2026 15:28:55 +1100)
Dave Horsfall <[email protected]>
is rumored to have said:

[ I usually post as "[email protected]" but I'm having problems with
Optusnet ]

High Sierra 10.13.6 on MacBook Pro (13-inch, Mid 2010).

Trying to build "gnuplot" it sees "aquaterm" as a dependancy and fails when
trying to build "xcrun" with ":info:build xcrun: error: unable to exec
Xcode native xcrun (Permission denied)."

The main.log file is attached (and some of those warnings look a bit suss
to me).

Yes, I ran "port clean all" first.

Where have I stuffed up?

Your Xcode and/or Command Line Tools installations are broken.

The 'xcrun' program is not something MacPorts is building, it is part of the Xcode complex that can be used to find the 'right' development tool (cc, ar, nm, clang, ld, etc.) or to run one of those tools. From the man page:

       xcrun provides a means to locate or invoke developer tools
       from the command-line, without requiring users to modify
       Makefiles or otherwise take inconvenient measures to support
       multiple Xcode tool chains.

The "unable to exec Xcode native xcrun (Permission denied)." error strikes me as odd, since that claims there's a permissions problem, which is extremely unlikely unless you've done something like chmod'ing /usr/bin/xcrun.

--
Bill Cole

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