Adjust makefile to python3

Author: MatthijsBurgh

Makefile.config.example

@@ -68,26 +68,22 @@ BLAS := atlas
 
 # NOTE: this is required only if you will compile the python interface.
 # We need to be able to find Python.h and numpy/arrayobject.h.
-PYTHON_INCLUDE := /usr/include/python2.7 \
-		/usr/lib/python2.7/dist-packages/numpy/core/include
+PYTHON_LIBRARIES := boost_python3 python3.8
+PYTHON_INCLUDE := /usr/include/python3.8 \
+		/usr/lib/python3/dist-packages/numpy/core/include
 # Anaconda Python distribution is quite popular. Include path:
 # Verify anaconda location, sometimes it's in root.
 # ANACONDA_HOME := $(HOME)/anaconda
 # PYTHON_INCLUDE := $(ANACONDA_HOME)/include \
-		# $(ANACONDA_HOME)/include/python2.7 \
-		# $(ANACONDA_HOME)/lib/python2.7/site-packages/numpy/core/include
-
-# Uncomment to use Python 3 (default is Python 2)
-# PYTHON_LIBRARIES := boost_python3 python3.5m
-# PYTHON_INCLUDE := /usr/include/python3.5m \
-#                 /usr/lib/python3.5/dist-packages/numpy/core/include
+		# $(ANACONDA_HOME)/include/python3.8 \
+		# $(ANACONDA_HOME)/lib/python3.8/site-packages/numpy/core/include
 
 # We need to be able to find libpythonX.X.so or .dylib.
 PYTHON_LIB := /usr/lib /usr/local/lib
 # PYTHON_LIB := $(ANACONDA_HOME)/lib
 
 # Homebrew installs numpy in a non standard path (keg only)
-# PYTHON_INCLUDE += $(dir $(shell python -c 'import numpy.core; print(numpy.core.__file__)'))/include
+# PYTHON_INCLUDE += $(dir $(shell python3 -c 'import numpy.core; print(numpy.core.__file__)'))/include
 # PYTHON_LIB += $(shell brew --prefix numpy)/lib
 
 # Uncomment to support layers written in Python (will link against Python libs)