[MacPorts] #42869: mlt build fails with clang: error: unknown argument

[MacPorts]

#42869: mlt build fails with clang: error: unknown argument
-------------------------------------------------+-------------------------
 Reporter:  me@…                                 |      Owner:  macports-
     Type:  defect                               |  tickets@…
 Priority:  Normal                               |     Status:  new
Component:  ports                                |  Milestone:
 Keywords:  -Wunused-command-line-argument-      |    Version:  2.2.1
  hard-error-in-future                           |       Port:  mlt
-------------------------------------------------+-------------------------
 mlt build fails, this looks like the relevant part of the long:

 {{{
 :info:build make[1]: Entering directory
 `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_multimedia_mlt/mlt/work/mlt-0.9.0/src/framework'
 :info:build clang: error: unknown argument: '-fno-tree-dominator-opts'
 [-Wunused-command-line-argument-hard-error-in-future]
 :info:build clang: note: this will be a hard error (cannot be downgraded
 to a warning) in the future
 :info:build clang: error: unknown argument: '-fno-tree-pre' [-Wunused-
 command-line-argument-hard-error-in-future]
 :info:build clang: note: this will be a hard error (cannot be downgraded
 to a warning) in the future
 :info:build clang: error: unknown argument: '-fno-tree-dominator-opts'
 [-Wunused-command-line-argument-hard-error-in-future]
 :info:build clang: note: this will be a hard error (cannot be downgraded
 to a warning) in the future
 :info:build clang: error: unknown argument: '-fno-tree-pre' [-Wunused-
 command-line-argument-hard-error-in-future]
 :info:build clang: note: this will be a hard error (cannot be downgraded
 to a warning) in the future
 :info:build make[1]: *** [depend] Error 1
 }}}

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Ticket URL: <https://trac.macports.org/ticket/42869>
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