Platform independent python3 import for C

Relies on the python3-config tool, some exploration in how to pass
libraries directly to the linker with ponyc seems to require a
complete redefinition through the --linker flag.

machida/Makefile

@@ -48,6 +48,8 @@ MACHIDA_BUILD = $(MACHIDA_PATH)/build
 MACHIDA_CPP = $(MACHIDA_PATH)/cpp
 WALLAROO_LIB =  $(wallaroo_path)/lib
 
+PYTHON3_INCLUDES = $(shell python3-config --includes)
+
 # Our top level Makefile has 3 rules that would have been generated for us if
 # we hadn't turned them off at the top of the Makefile. Here we recreate them
 # with our own custom rules. This allows the top level commands like
@@ -80,7 +82,7 @@ $(MACHIDA_BUILD)/libpython-wallaroo.a: $(MACHIDA_BUILD)/python-wallaroo.o
 
 $(MACHIDA_BUILD)/python-wallaroo.o: $(MACHIDA_CPP)/python-wallaroo.c
 	$(QUIET)mkdir -p $(MACHIDA_BUILD)
-	$(QUIET)cc -g -o $(MACHIDA_BUILD)/python-wallaroo.o -c $(MACHIDA_CPP)/python-wallaroo.c
+	$(QUIET)cc -g -o $(MACHIDA_BUILD)/python-wallaroo.o $(PYTHON3_INCLUDES) -c $(MACHIDA_CPP)/python-wallaroo.c
 
 # end of prevent rules from being evaluated/included multiple times
 endif

machida/cpp/python-wallaroo.c

@@ -16,7 +16,7 @@ Copyright 2017 The Wallaroo Authors.
 
 */
 
-#include <python3.5m/Python.h>
+#include <Python.h>
 
 
 PyObject *g_user_deserialization_fn;