+ not_if do
+ File.exist?("#{rails_directory}/lib/quad_tile/quad_tile_so.so") &&
+ File.mtime("#{rails_directory}/lib/quad_tile/quad_tile_so.so") >= File.mtime("#{rails_directory}/lib/quad_tile/extconf.rb") &&
+ File.mtime("#{rails_directory}/lib/quad_tile/quad_tile_so.so") >= File.mtime("#{rails_directory}/lib/quad_tile/quad_tile.c") &&
+ File.mtime("#{rails_directory}/lib/quad_tile/quad_tile_so.so") >= File.mtime("#{rails_directory}/lib/quad_tile/quad_tile.h")
+ end
+ notifies :run, "execute[#{rails_directory}/lib/quad_tile/Makefile]"