Sped up Cython compile speed by ensuring both the cython part and c++…

… part are parallelized by number of logical CPU cores.

compile

@@ -1,4 +1,3 @@
 #!/bin/bash
 
-python setup.py build_ext --inplace \
-    -j $(python -c "import os; print(os.cpu_count() or 8, end='')")
+python setup.py build_ext --inplace

setup.py

@@ -5,6 +5,7 @@
 import numpy as np
 import os
 import subprocess
+import sys
 
 if os.name == "posix":
     os_name = subprocess.check_output("uname").decode("utf8")
@@ -15,6 +16,7 @@
 
 
 def main():
+    cpu_count = os.cpu_count() or 8
     version = "20190508"
     packages = [
         "wings",
@@ -100,6 +102,9 @@ def main():
         ]
         package_data["wings"].append("cpp/*.cpp")
 
+    if sys.argv[1] == "build_ext":
+        sys.argv.append(f"--parallel={cpu_count}")
+
     setup(name="hummingbot",
           version=version,
           description="CoinAlpha Hummingbot",
@@ -113,7 +118,7 @@ def main():
           ext_modules=cythonize([
               "hummingbot/**/*.pyx",
               "wings/**/*.pyx",
-          ], language="c++", language_level=3),
+          ], language="c++", language_level=3, nthreads=cpu_count),
           include_dirs=[
               np.get_include(),
           ],