CMakeLists doesn't work
CMakeLists.txt:38 add_subdirectory(fem/slimfem)
add_subdirectory given source "fem/slimfem" which is not an existing directory.
CMakeLists.txt:38 add_subdirectory(fem/slimfem)
add_subdirectory given source "fem/slimfem" which is not an existing directory.