[MacPorts] #62744: py39-opencv4 4.5.2: staging into destroot fails

[MacPorts]

#62744: py39-opencv4 4.5.2: staging into destroot fails
-----------------------+--------------------------
 Reporter:  phosphide  |      Owner:  stromnov
     Type:  defect     |     Status:  assigned
 Priority:  Normal     |  Milestone:
Component:  ports      |    Version:  2.6.4
 Keywords:             |       Port:  py39-opencv4
-----------------------+--------------------------
 py39-opencv4 build successfully, but staging fails with the following
 output:

 {{{
 --->  Fetching distfiles for py39-opencv4
 --->  Verifying checksums for py39-opencv4
 --->  Extracting py39-opencv4
 --->  Applying patches to py39-opencv4
 --->  Configuring py39-opencv4
 --->  Building py39-opencv4
 --->  Staging py39-opencv4 into destroot
 Error: No files have been installed in the destroot directory!
 Error: Please make sure that this software supports 'make install
 DESTDIR=${destroot}' or implement an alternative destroot mechanism in the
 Portfile.
 Error: Files might have been installed directly into your system, check
 before proceeding.
 Error: Failed to destroot py39-opencv4: Staging py39-opencv4 into destroot
 failed
 Error: See
 /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_macports_release_tarballs_ports_graphics_opencv4/py39-opencv4/main.log
 for details.
 Error: Follow https://guide.macports.org/#project.tickets to report a bug.
 Error: Processing of port py39-opencv4 failed
 }}}

 macOS Big Sur 11.2.3, Apple M1. Full log is attached.

-- 
Ticket URL: <https://trac.macports.org/ticket/62744>
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