In CMake 3.0 the policy CMP0050 was introduced where it could be set to OLD to keep this behaviour while for NEW an error was raised. Since CMake 3.5.2 a warning comes up when using the OLD behaviour and that it will be removed in a future version. In FreeCAD we switched to the new behaviour now and removed the SOURCE signature from add_custom_command which affects the macros fc_copy_sources, fc_target_copy_resource and fc_target_copy_resource_flat and their usage. It's not possible any more to add files to a target by using the macros. Now a file must be added to the target before using the macros. This commit fixes it for Arch, Draft, OpenSCAD, Material, Plot and Ship
* Authors --------- Jose Luis Cercós Pita <jlcercos@gmail.com> * Introduction -------------- Plot is a module that provide an interface to perform plots.