diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..7b826d7
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,29 @@
+BSD 3-Clause License
+
+Copyright (c) 2017-2022, 元谷
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+* Neither the name of the copyright holder nor the names of its
+  contributors may be used to endorse or promote products derived from
+  this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/README.md b/README.md
index 0d5098e..fb45ddd 100644
--- a/README.md
+++ b/README.md
@@ -72,7 +72,8 @@ sxtwl_cpp是参考[寿星天文历](http://www.nongli.net/sxwnl/)并使用C++实
     点击[C#安装及事例文档](doc/如何构建.md)阅读文档
 
 +  #### C语言用户专享文档 
-    注：如有需要显示给其它语言调用的用户，可以使用此版本。目前只提供DLL或者so生成
+    注：如有需要显示给其它语言调用的用户，可以使用此版本。目前只提供静态库的生成。
+    另外，导接的接口可参考 c/sxtwl_c.h
     点击[C语言安装及事例文档](doc/如何构建.md)阅读文档
 
 
diff --git a/c/sxtwl_c.h b/c/sxtwl_c.h
index b6ef340..606a6b5 100644
--- a/c/sxtwl_c.h
+++ b/c/sxtwl_c.h
@@ -55,6 +55,7 @@ extern "C"
 	} sxtwl_Day;
 
 
+	// 注意返回的sxtwl_Day指针，需要使用sxtwl_freeDay释放
 	CC_EX_DLL sxtwl_Day* sxtwl_after(sxtwl_Day* day, sxtwl_Day* ret, int day_num);
 	CC_EX_DLL sxtwl_Day* sxtwl_before(sxtwl_Day* day, sxtwl_Day* ret, int day_num);
 
diff --git a/python/MANIFEST.in b/python/MANIFEST.in
new file mode 100644
index 0000000..6e8673e
--- /dev/null
+++ b/python/MANIFEST.in
@@ -0,0 +1 @@
+recursive-include src *.h
\ No newline at end of file
diff --git a/python/setup.py b/python/setup.py
index b1ab9e8..06312e8 100644
--- a/python/setup.py
+++ b/python/setup.py
@@ -67,7 +67,6 @@
 
 
 sxtwl_module = setuptools.Extension('_sxtwl',
-                         include_dirs=[os.path.abspath("./src"),],
                          sources=[
                           'sxtwl_wrap.cxx',
                           'src/eph.cpp', 
@@ -75,22 +74,16 @@
                           'src/SSQ.cpp',
                           'src/sxtwl.cpp',  
                           'src/day.cpp', 
-
-                          'src/const.h',
-                           'src/day.h',
-                           'src/eph.h',
-                           'src/JD.h',
-                           'src/SSQ.h',
-                           'src/sxtwl.h',
-                           'src/XL.h'
                           ], 
-                          extra_compile_args=extra_compile_args, 
+                           include_dirs=["./src"],
+                          extra_compile_args=extra_compile_args
+                       
 )
 
 
 setuptools.setup(
     name="sxtwl",
-    version="2.0.4",
+    version="2.0.5",
     author="yuangu",
     author_email="seantone@126.com",
     description="sxtwl_cpp warpper for python",