Hi, in CMake 3.14 the EXCLUDE_FROM_ALL option of add_subdirectory had a behavior change. Here is the MR: https://gitlab.kitware.com/cmake/cmake/merge_requests/2816, implementing the requirement from this ticket: https://gitlab.kitware.com/cmake/cmake/issues/17149.
We are negatively impacted by this change, as we are in the same exact scenario as this user: https://cmake.org/pipermail/cmake/2019-September/069978.html Except we used this behavior to have separate VS solutions for our unit tests and demos. Our hierarchy looks something like this: |- MainLibrary |- Extension1 |- Extension2 |- UnitTests | - [lots of tests] |- Demos | - [lots of demos] This had the very nice result of having a root solution containing all of our libraries and extensions, another solution in the UnitTests folder, and another in the Demos folder (and likewise on linux, we could build with 'ninja UnitTests/all'). The new behavior leads to the inability to build all our tests/demos in one fell swoop, and removing the EXCLUDE_FROM_ALL directive would result in a VS solution way too large for daily use. This currently is blocking us to upgrade to CMake > 3.13, which prevents us from using VS 2019. I know this change occurred about two years ago, so changing the behavior the other way is not a good way forward, and do not know enough to find out by myself how the previous behavior can be re-introduced. I would like advice on how to re-introduce the previous behavior without perturbing the new one, e.g. a way to set EXCLUDE_FROM_ALL to FALSE on all the targets of a folder that is itself excluded from the ALL target. Thanks for your help. -- - Always keep in mind that you may be wrong -
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