Optimized target sketch-addition feature by avoiding unnecessary header resolving.

Also fixed a bug where the wrong file was checked for existence, affecting whether to perform conversion or not.

Author: MrPointer

cmake/Platform/Sketches/SketchManager.cmake

@@ -27,11 +27,12 @@ endfunction()
 #=============================================================================#
 function(add_sketch_to_target _target_name _board_id _sketch_file)
 
-    resolve_sketch_headers(${_target_name} ${_board_id} "${_sketch_file}")
     _get_converted_source_desired_path("${_sketch_file}" sketch_converted_source_path)
 
     # Only perform conversion if policy is set or if sketch hasn't been converted yet
-    if (CONVERT_SKETCHES_IF_CONVERTED_SOURCES_EXISTS OR NOT EXISTS "${sketch_file}")
+    if (CONVERT_SKETCHES_IF_CONVERTED_SOURCES_EXISTS OR
+            NOT EXISTS "${sketch_converted_source_path}")
+        resolve_sketch_headers(${_target_name} ${_board_id} "${_sketch_file}")
         convert_sketch_to_source("${_sketch_file}" "${sketch_converted_source_path}")
     endif ()