gpac @0.6.1_1: 'VideoToolbox/VideoToolbox.h' file not found

[iefdev (Eric F)]

as I posted here: #56259#comment:8

It fails to build...

--->  Computing dependencies for gpac
--->  Fetching distfiles for gpac
--->  Attempting to fetch gpac-0.7.1.tar.gz from http://lil.fr.distfiles.macports.org/gpac
--->  Verifying checksums for gpac                                                   
--->  Extracting gpac
--->  Applying patches to gpac
--->  Configuring gpac
Error: gpac cannot be built while another version of gpac is active.
Error: Please forcibly deactivate the existing copy of gpac, e.g. by running:
Error: 
Error:     sudo port -f deactivate gpac
Error: 
Error: Then try again.
Error: Failed to configure gpac: gpac is active
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_multimedia_gpac/gpac/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets to report a bug.

Deactiavting:

$ sudo port -f deactivate gpac
--->  Unable to deactivate gpac @0.6.1_1, the following ports depend on it:
--->  	MP4Joiner @2.2_1
Warning: Deactivate forced.  Proceeding despite dependencies.
--->  Deactivating gpac @0.6.1_1
--->  Cleaning gpac

Upgrading:

--->  Computing dependencies for gpac
--->  Configuring gpac
--->  Building gpac
Error: Failed to build gpac: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_multimedia_gpac/gpac/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets to report a bug.

---

The log complains about a missing header.

:info:build vtb_decode.c:31:10: fatal error: 'VideoToolbox/VideoToolbox.h' file not found
:info:build #include <VideoToolbox/VideoToolbox.h>
:info:build          ^
:info:build 1 error generated.
:info:build make[2]: *** [vtb_decode.o] Error 1
:info:build make[2]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_multimedia_gpac/gpac/work/gpac-0.7.1/modules/vtb_decode'
:info:build make[1]: *** [plugs] Error 2
:info:build make[1]: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_multimedia_gpac/gpac/work/gpac-0.7.1/modules'
:info:build make: *** [all] Error 2
:info:build make: Leaving directory `/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_multimedia_gpac/gpac/work/gpac-0.7.1'
:info:build Command failed:  cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_multimedia_gpac/gpac/work/gpac-0.7.1" && /usr/bin/make -w all 
:info:build Exit code: 2
:error:build Failed to build gpac: command execution failed

Attaching my log…