message: Fix minor HTML build issue.
diff: @@ -138,7 +138,7 @@ function(add_demo NAME)
  # manually-written HTML file.
  add_custom_command(
  OUTPUT ${PROJECT_BINARY_DIR}/public/${NAME}.js
  - DEPENDS ${NAME} ${PROJECT_BINARY_DIR}/${NAME}.js
  + DEPENDS ${NAME} ${PROJECT_BINARY_DIR}/${NAME}.js ${CMAKE_CURRENT_SOURCE_DIR}/${NAME}.html
  COMMAND cmake -E copy ${CMAKE_CURRENT_SOURCE_DIR}/${NAME}.html ${PROJECT_BINARY_DIR}/public
  COMMAND cmake -E copy ${PROJECT_BINARY_DIR}/${NAME}.* ${PROJECT_BINARY_DIR}/public)
  add_custom_target(${NAME}_public ALL DEPENDS ${PROJECT_BINARY_DIR}/public/${NAME}.js)
  