BASIS Unable to call Subproject from toplevel project

I am trying to create a project following the structure shown below

I have created the following equivalent BasisProject structure

But there is no way the subproject is called from the toplevel project.

I tried adding basis_add_subdirectory(Subproject1) in the CMakeLists.txt of the toplevelproject. I get the error " Module Subproject1 specified DEFAULT_MODULES, but a module cannot have itself modules."

I tried adding add_subdirectory(Subproject1) in the CMakeLists.txt of the toplevelproject. I get the error

"CMake Error at config/basis-modules/InstallationTools.cmake:456 (add_custom_target): add_custom_target cannot create target "uninstall" because another target with the same name already exists. The existing target is a custom target"

What is the right way to call the subproject from the toplevel project?

Mar 10 '19 06:03 srini2174

I apologize for the very very late response! Though I assume this answer may be too late, here some information as future reference for others. I suggest a look at my other project called MIRTK that uses BASIS with submodules.

You could add Subproject1/Module1, Subproject1/Module2,... to the MODULE_DIRS defined by the top-level project BasisProject.cmake file as done for MIRTK here.

Apr 05 '20 18:04 schuhschuh

I had followed exactly the way it is done in MIRTK, but I still get the error

CMake Error at CMake/Basis/ProjectTools.cmake:358 (message): [cmake] Module PluginItf specified DEFAULT_MODULES, but a module cannot have itself [cmake] modules.

The subprojects are only treated as modules of the top level project and they are not treated as a subproject.

Apr 07 '20 14:04 srini2174

Thanks for following up. In that case, I would say the error message is probably quite specific and may not actually be relating to the fact that your top-level project has modules. Rather, do you have an entry DEFAULT_MODULES in your SubprojectX/ModuleY/BasisProject.cmake files? If so, please remove. Only the TopLevelProject/BasisProject.cmake file should contain a DEFAULT_MODULES option as part of the basis_project command.

Otherwise, please post the content of the top-level BasisProject.cmake file and the PluginItf/BasisProject.cmake, for example.

Apr 07 '20 15:04 schuhschuh

I have removed the DEFAULT_MODULES option in the BasisProject.cmake file. Now the configuration is done. When I build it Ninja gives the message "No work to do".

As I understand SUBPROJECTS can have modules under them. I have all the sources as a module of the subproject. Since I have removed the DEFAULT_MODULES option no module under the subproject is included/built.

Apr 07 '20 17:04 srini2174

Can you list the default subproject modules with DEFAULT_MODULES in the TopLevelProject/BasisProject.cmake file (but not SubprojectX/ModuleY/BasisProject.cmake)? That's how it is also done in MIRTK if you want to have another look to double check.

Apr 07 '20 18:04 schuhschuh

Thanks. I was able to get the configuration done, but I felt that it is counter intuitive. One of my team member works on the sub-project with all the modules. So by default all the modules are on. Finally during the integration I will have to remove all the DEFAULT_MODULES option from all the sub-project and also add the sub-project and all the modules under the sub-project in the toplevel project once again. If I have many modules and many sub-projects this becomes very difficult.

Further I am also having some issues in getting the dependency between sub-projects.

Apr 08 '20 01:04 srini2174