[Bug 268070] Mk/bsd.port.mk: Generalize the 'make describe' command to allow custom commands run on individual ports

From: <bugzilla-noreply_at_freebsd.org>
Date: Wed, 30 Nov 2022 04:31:38 UTC 
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=268070

            Bug ID: 268070
           Summary: Mk/bsd.port.mk: Generalize the 'make describe' command
                    to allow custom commands run on individual ports
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Ports Framework
          Assignee: portmgr@FreeBSD.org
          Reporter: yuri@freebsd.org
                CC: ports-bugs@FreeBSD.org

Created attachment 238438
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=238438&action=edit
patch

Currently 'make describe' visits every port in the tree with a predefined
command that prints a summary information about the port for INDEX.

The attached patch generalizes 'make describe' to allow user-supplied command
to execute in each port.

When the variable DESCRIBE_COMMAND is defined 'make describe' would run this
command instead of the fixed predefined command it currently runs.

Purpose: It it needed to enable the PortsDB convertor that imports the ports
tree into an SQLite database: https://github.com/yurivict/freebsd-portsdb

Services like Repology and FreshPorts would be able to easily extract a more
comprehensive information about ports from the PortsDB database.

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