[CMake] Execute command after project generation

[Nicolas Schneider]

Is it possible to execute commands after the generation step of the
project files?

I want to set custom properties in the generated Visual Studio project,
because it should be built as a driver, which requires a few extra steps.
These changes should be done automatically by CMake (or a script run
after project generation) to be in sync between all developers.

I also tried just setting the properties with something like: cmake
--build . -- /p:FilesToPackage="a;b;c"

But it seems like CMake does not pass the command as raw string, because
msbuild complains about non-existing property, like it does when called
directly without quotes: msbuild project /p:FilesToPackage=a;b;c
which would treat 'b' as a property key instead of part of the value for
FilesToPackage.

The only workaround, currently, is to use:
cmake ..
modifyProjects.py
cmake --build .

However, I assume this does not work correctly if CMake regenerates the
project files because of changes in CMakeLists (because
modifyProjects.py will not be called automatically by CMake), correct?