[CMake] EXCLUDE_FROM_DEFAULT_BUILD: a solution that works for both interactive and unattended builds

[Alessio]

Hi All

(similar questions have been asked before, but none has quite hit the mark)

Is there any way to force MSVC to build custom targets marked with
EXCLUDE_FROM_DEFAULT_BUILD?

Using

      cmake --build . --target SOME_EXCLUDED_TARGET --config Release

will produce the well known message

     Project not selected to build for this solution configuration

I could find the following two ways to get the targets to build, but they
all have drawbacks:

   1. Use a BATCH_BUILD variable that will disable the setting of
EXCLUDE_FROM_DEFAULT_BUILD
   on the targets.
   2. Define a set of build configurations on which
EXCLUDE_FROM_DEFAULT_BUILD_<config>
   is not set (e.g. Release_ALL is identical to Release, except it has no
   build exclusions)

Option 1 has the drawback of producing solutions that do not work well for
interactive development

Option 2 is rather cumbersome and would require the users to build separate
sets of binaries. I could not quite figure out a way to make the
Release_ALL packaging commands reference the Release target binaries.

Has anyone figured out a way to get the full monty, i.e. a way to generate
an MSVC solution that works well for both interactive and command line
builds?

Thank you so much for any feedback you can provide on this
-alessio
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