[MacPorts] #64009: cmake-1.1 portgroup: add option to formally override build.cmd, for Make-type builds

[MacPorts]

#64009: cmake-1.1 portgroup: add option to formally override build.cmd, for Make-
type builds
---------------------------+----------------------
  Reporter:  mascguy       |      Owner:  mascguy
      Type:  enhancement   |     Status:  assigned
  Priority:  Normal        |  Milestone:
 Component:  ports         |    Version:  2.7.1
Resolution:                |   Keywords:
      Port:  pg-cmake-1.1  |
---------------------------+----------------------

Comment (by RJVB):

 Replying to [ticket:64009 mascguy]:
 > Presently, portgroup `cmake-1.1` is hard-coded to assume the use of
 macOS `make`, for Make-type builds. However, that precludes the use of
 `gmake`.
 >
 > Add a formal override, allowing ports to specify the value for
 `build.cmd` for that case.

 There probably is rarely a need to change the command used for Ninja
 builds, but still, on 2nd thought the cleanest way to address this issue
 would be to have `cmake.make_cmd` and `cmake.ninja_cmd` (or equivalent)
 options with defaults set
 the current hardwired commands.

 Is there an actual case where this is required? With CMake, Makefiles are
 generated from scratch, not from automake templates that could include
 features not supported by the system `make` command. IOW, it would take a
 pretty complex (and probably a "hybrid") build system to run into such
 features, as long as CMake itself doesn't use them.

-- 
Ticket URL: <https://trac.macports.org/ticket/64009#comment:9>
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