py314-pyobjc @10.3.2: error: use of undeclared identifier 'RETURN_CONST'

[ryandesign (Ryan Carsten Schmidt)]

​https://build.macports.org/builders/ports-26_arm64-builder/builds/21327/steps/install-port/logs/stdio

* Getting build dependencies for wheel...
/opt/local/var/macports/build/py314-pyobjc-87827dbf/work/pyobjc-10.3.2/pyobjc-framework-SceneKit/pyobjc_setup.py:15: UserWarning: pkg_resources is deprecated as an API. See https://setuptools.pypa.io/en/latest/pkg_resources.html. The pkg_resources package is slated for removal as early as 2025-11-30. Refrain from using this package or pin to Setuptools<81.
  import pkg_resources
Modules/objc/meth-func.m:144:28: error: use of undeclared identifier 'RETURN_CONST'
  144 |             else if (op == RETURN_CONST && ((unsigned char*)buf.buf)[i + 1] != 0) {
      |                            ^
1 error generated.
error: command '/usr/bin/clang' failed with exit code 1