OUTPUT_DIRECTORY variables cannot be changed

[fbudin69500]

SlicerExecutionModel_DEFAULT_CLI___OUTPUT_DIRECTORY and SlicerExecutionModel_DEFAULT_CLI_INSTALL___DESTINATION variables' default value is used when using SEMMacroBuildCLI.cmake because of find_package(SlicerExecutionModel REQUIRED GenerateCLP) (line 100). One solution is to set those varialbes as CACHE variables when setting their default value in SlicerExecutionModelConfig.cmake.

[jcfr]

Developer can set output directory with the following methods (where last method has the highest priority ):

• configuring SlicerExecutionModel project setting variables SlicerExecutionModel_DEFAULT_CLI_(RUNTIME|LIBRARY|ARCHIVE)_OUTPUT_DIRECTORY
• setting variables SlicerExecutionModel_CLI_(RUNTIME|LIBRARY|ARCHIVE)_OUTPUT_DIRECTORY in the current scope before including SEMMacroBuildCLI
• specifying (RUNTIME|LIBRARY|ARCHIVE)_OUTPUT_DIRECTORY option to SEMMacroBuildCLI

The same applies for SlicerExecutionModel_CLI_INSTALL_(RUNTIME|LIBRARY|ARCHIVE)_DESTINATION