[MacPorts] #64488: darktable-devel @3.8.0_1: rebuilds dependent ports with "+universal" when that isn't specified

[MacPorts]

#64488: darktable-devel @3.8.0_1: rebuilds dependent ports with "+universal" when
that isn't specified
------------------------------+-----------------------------------------
  Reporter:  bal-agates       |      Owner:  (none)
      Type:  defect           |     Status:  new
  Priority:  Normal           |  Milestone:
 Component:  ports            |    Version:  2.7.1
Resolution:                   |   Keywords:  darktable universal sqlite3
      Port:  darktable-devel  |
------------------------------+-----------------------------------------

Comment (by bal-agates):

 Thank you Ryan for the quick analysis.  You were correct.

 In the Portfile for darktable-devel I added "arm64" to supported_archs.
 That solved the building "universal" ports issue.  Everything now built
 arm64 without error.  However when I ran in a shell I saw the following
 messages:
 {{{
 $ darktable
 [dt_detect_cpu_features] Not implemented for this architecture.
 [dt_detect_cpu_features] Please contribute a patch.
 [dt_init] SSE2 instruction set is unavailable.
 [dt_init] expect a LOT of functionality to be broken. you have been
 warned.

 (process:40086): GLib-GObject-CRITICAL **: 15:00:42.945: g_object_set:
 assertion 'G_IS_OBJECT (object)' failed
 [defaults] found a 64-bit system with 33554432 kb ram and 1 cores (0 atom
 based)
 [defaults] setting very conservative defaults
 dbus[40086]: Dynamic session lookup supported but failed: launchd did not
 provide a socket path, verify that org.freedesktop.dbus-session.plist is
 loaded!
 [dt_detect_cpu_features] Not implemented for this architecture.
 [dt_detect_cpu_features] Please contribute a patch.
 [dt_codepaths_init] will be using experimental plain OpenMP SIMD codepath.
 [dt_pthread_create] info: bumping pthread's stacksize from 524288 to
 2097152
 [dt_pthread_create] info: bumping pthread's stacksize from 524288 to
 2097152
 [dt_pthread_create] info: bumping pthread's stacksize from 524288 to
 2097152
 [dt_pthread_create] info: bumping pthread's stacksize from 524288 to
 2097152
 [dt_pthread_create] info: bumping pthread's stacksize from 524288 to
 2097152
 [dt_pthread_create] info: bumping pthread's stacksize from 524288 to
 2097152
 zsh: trace trap  darktable
 }}}
 I recognize the SSE2 instruction as only for Intel CPU.  See
 [https://developer.apple.com/documentation/apple-silicon/addressing-
 architectural-differences-in-your-macos-code Addressing Architectural
 Differences in Your macOS Code].  I am not sure about the other status but
 there could be other CPU specific issues.  I may look at the CPU issues a
 little but likely they are more than I can handle.

 A prepackaged version of darktable x86_64 is available.  I was only trying
 to build in MacPorts to get a native arm64 version.  Do you think we
 should add a comment to the Portfile referencing this Trac issue in case
 others fall into the same trap that I did?

 Feel free to close this issue.

-- 
Ticket URL: <https://trac.macports.org/ticket/64488#comment:2>
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