message: Build objects to /obj folder
diff: @@ -63,7 +63,7 @@ function GCCToolchain(prefix, builddir, compiler_flags, linker_flags)
  inc_flags += "-I"..inc
  end
  -- todo: vary build directory
  - obj_file = builddir.."/"..src:gsub("/","_")..".o"
  + obj_file = builddir.."/obj/"..src:gsub("/","_")..".o"
  outputs.object_files += obj_file
  if gen_su_file then
  su_file = builddir.."/"..src:gsub("/","_")..".su"
  