Merge pull request #5 from YyuK-Liao/master

Fix two issues, Dependencies and Installation on different OS.

setup.py

@@ -7,35 +7,47 @@
 
 from __future__ import print_function
 
-from Cython.Build import cythonize
-from Cython.Distutils import build_ext
 from setuptools import Extension
 from setuptools import setup
-
-import numpy as np
-
-
-# Obtain the numpy include directory.  This logic works across numpy versions.
-try:
-    numpy_include = np.get_include()
-except AttributeError:
-    numpy_include = np.get_numpy_include()
+from distutils.command.build import build as _build
+import os
+
+# ref from https://stackoverflow.com/questions/54117786/add-numpy-get-include-argument-to-setuptools-without-preinstalled-numpy
+class build(_build):
+    def finalize_options(self):
+        super().finalize_options()
+        import builtins
+        builtins.__NUMPY_SETUP__ = False
+        import numpy as np
+        # Obtain the numpy include directory.  This logic works across numpy versions.
+        extension = next(m for m in self.distribution.ext_modules if m.name=='cython_bbox')
+        try:
+            extension.include_dirs.append(np.get_include())
+        except AttributeError:
+            extension.include_dirs.append(np.get_numpy_include())
 
 with open("README.md", "r") as fh:
     long_description = fh.read()
 
+if os.name == 'nt':
+    compile_args = {'gcc': ['/Qstd=c99']}
+else:
+    compile_args = ['-Wno-cpp']
+
 ext_modules = [
     Extension(
         name='cython_bbox',
         sources=['src/cython_bbox.pyx'],
-        extra_compile_args = {'gcc': ['/Qstd=c99']},
-        include_dirs=[numpy_include]
+        extra_compile_args = compile_args,
     )
 ]
 
 setup(
     name='cython_bbox',
-    ext_modules=cythonize(ext_modules),
+    setup_requires=["setuptools>=18.0","Cython","numpy"],
+    install_requires=["Cython","numpy"],
+    ext_modules=ext_modules,
+    cmdclass={'build': build},
     version = '0.1.3',
     description = 'Standalone cython_bbox',
     long_description=long_description,