compilation error for module.so under Ubuntu 17.10

[markrofail]

Got the following two error from setup.py:

- kitti/bp/module.cpp:580:10: fatal error: numpy/arrayobject.h: No such file or directory
 #include "numpy/arrayobject.h"
- kitti/bp/module.cpp:586:10: fatal error: opencv2/opencv.hpp: No such file or directory
 #include "opencv2/opencv.hpp"

solved by:

• installing opencv libraries

sudo apt install libopencv-dev

• installing numpy

pip install numpy

and the following changes to setup.py

diff --git a/setup.py b/setup.py
index 83c228c..cde6e6d 100644
--- a/setup.py
+++ b/setup.py
@@ -2,16 +2,22 @@ from setuptools import setup
 
 from distutils.extension import Extension
 from Cython.Distutils import build_ext
+import numpy
+import subprocess
+ 
+proc_libs = subprocess.check_output("pkg-config --libs opencv".split())
+proc_incs = subprocess.check_output("pkg-config --cflags opencv".split())
+libs = [lib for lib in str(proc_libs, "utf-8").split()]
 
 ext_modules = []
 ext_modules.append(Extension(
     "kitti.bp.module",
     ["kitti/bp/module.pyx", "kitti/bp/interp.cpp", "kitti/bp/stereo.cpp", "kitti/bp/bp.cpp"],
-    include_dirs=["kitti/bp", "/opt/opencv/include"],
+    include_dirs=[numpy.get_include(), "kitti/bp", "/opt/opencv/include"],
     library_dirs=["/opt/opencv/lib"],
     libraries=["opencv_core", "opencv_imgproc"],
     language="c++",
-    extra_compile_args=["-w", "-O3"]))
+    extra_compile_args=["-w", "-O3"].append(libs)))
 
 setup(
     name="kitti",

Just wanted to share the fix