title: Cython compilation appends text to filename, how to get rid of it?
body: <p>I'm working with cython on the Ubuntu platform. Everything works fine, except there is one thing that annoys me. When compiling a cython project to a .so file, the filename of the .pyx file is appended with "cpython-36m-x86_64-linux-gnu".
  For example, if I build "helloworld.pyx" the resulting .so file is called: "helloworld.cpython-36m-x86_64-linux-gnu.so". I however would just want it to be called "helloworld.so".</p>
  
  <p>I thought the answer would be quite trivial, so I started googling, even after 30 minutes I could find nothing on the subject. Does anyone have any idea?</p>
  
  <p>Here is my .pyx file:</p>
  
  <pre><code>print('hello world')
  </code></pre>
  
  <p>setup.py file:</p>
  
  <pre><code>from distutils.core import setup
  from Cython.Build import cythonize
  
  setup(
      ext_modules = cythonize("helloworld.pyx")
  )
  </code></pre>
  
  <p>building the file:</p>
  
  <pre><code>python setup.py build_ext --inplace
  Compiling helloworld.pyx because it changed.
  [1/1] Cythonizing helloworld.pyx
  running build_ext
  building 'helloworld' extension
  gcc -pthread -Wsign-compare -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -I/home/**/anaconda3/include/python3.6m -c helloworld.c -o build/temp.linux-x86_64-3.6/helloworld.o
  gcc -pthread -shared -L/home/**/anaconda3/lib -Wl,-rpath=/home/ed/anaconda3/lib,--no-as-needed build/temp.linux-x86_64-3.6/helloworld.o -L/home/**/anaconda3/lib -lpython3.6m -o /home/**/new_project/helloworld.cpython-36m-x86_64-linux-gnu.so
  </code></pre>