RayCyder

it seems link with new external target is not work due to add sub project can not work properly

2

file :xcodeproj/project/object/helpers/file_references_factory.rb function:def new_subproject(group, path, source_tree) can not work properly,so i changed it: ``` def new_subproject(group, path, source_tree) ref = new_file_reference(group.project.main_group, path, source_tree) ref.include_in_index = nil product_group_ref = find_products_group_ref(group, true)...

some fuctions is missing like :https://doc.cgal.org/5.3/Triangulation_on_sphere_2/index.html#Chapter_2D_Triangulations_on_sphere