Add stuff for cmake find_package

- Add build* to gitignore
- Fix year in license file
- other changes are result of clang-format

backends/3ds/CMakeLists.txt

@@ -8,6 +8,30 @@ set(SRC
     source/pd-3ds.cpp
 )
 add_subdirectory(${CMAKE_CURRENT_SOURCE_DIR}/libpicasso)
-pd_add_lib(pd-3ds SRC_FILES ${SRC})
-target_include_directories(pd-3ds PUBLIC include)
+add_library(pd-3ds STATIC ${SRC})
+target_include_directories(pd-3ds PUBLIC 
+  PUBLIC
+    $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/include>
+    $<INSTALL_INTERFACE:include>
+    )
 target_link_libraries(pd-3ds PUBLIC m palladium ctru citro3d pica::pica)
+add_library(palladium::pd-3ds ALIAS pd-3ds)
+install(TARGETS pd-3ds
+    EXPORT palladiumTargets
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+)
+
+install(DIRECTORY include/
+    DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+)
+
+install(TARGETS pica
+    EXPORT palladiumTargets
+    ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+    RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+    INCLUDES DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+)