graphviz won't build on Sonoma

[dnaumann]

graphviz gets compiler errors. I'm running a clean installation of macports 2.10.1 on an M2 macbook running Sonoma 14.7. This is a disaster for me because emacs-app won't install without graphviz. I'm attaching the log file that's mentioned in the error trace.

~>sudo port install graphviz
--->  Computing dependencies for graphviz
--->  Fetching archive for graphviz
--->  Attempting to fetch graphviz-9.0.0_1+pangocairo+x11.darwin_23.arm64.tbz2 from https://packages.macports.org/graphviz
--->  Attempting to fetch graphviz-9.0.0_1+pangocairo+x11.darwin_23.arm64.tbz2 from http://bos.us.packages.macports.org/graphviz
--->  Attempting to fetch graphviz-9.0.0_1+pangocairo+x11.darwin_23.arm64.tbz2 from https://mirrors.mit.edu/macports/packages/graphviz
--->  Building graphviz
Error: Failed to build graphviz: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_graphics_graphviz/graphviz/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets if you believe there
is a bug.
Error: Processing of port graphviz failed

[dnaumann]

log file showing compiler errors building graphviz

[jmroot (Joshua Root)]

This is actually an issue with version 16.0 of the Xcode command line tools: #70750