···11+diff --git a/setup.py b/setup.py
22+index e86b1b2..9d34d0d 100644
33+--- a/setup.py
44++++ b/setup.py
55+@@ -29,19 +29,7 @@ if sys.version_info < (3, 6):
66+77+ ROOT_PATH = os.path.abspath(os.path.dirname(__file__))
88+99+-rj_include_dir = './rapidjson/include'
1010+-
1111+-for idx, arg in enumerate(sys.argv[:]):
1212+- if arg.startswith('--rj-include-dir='):
1313+- sys.argv.pop(idx)
1414+- rj_include_dir = arg.split('=', 1)[1]
1515+- break
1616+-else:
1717+- if not os.path.isdir(os.path.join(ROOT_PATH, 'rapidjson', 'include')):
1818+- raise RuntimeError("RapidJSON sources not found: if you cloned the git"
1919+- " repository, you should initialize the rapidjson submodule"
2020+- " as explained in the README.rst; in all other cases you may"
2121+- " want to report the issue.")
2222++rj_include_dir = '@rapidjson@/include'
2323+2424+ with open('version.txt', encoding='utf-8') as f:
2525+ VERSION = f.read()