Python bindings (#328)

* Include .o files

* Add some missing prerequisites

Author: betaper

.gitignore

@@ -8,6 +8,7 @@ __pycache__/
 
 # C extensions
 *.so
+*.o
 
 # Distribution / packaging
 .Python

python-bindings/tasks.py

@@ -57,7 +57,7 @@ def build_cmult(c, path=None):
             c.run(path)
     else:
         print_banner("Building C Library")
-        cmd = "gcc -c -Wall -Werror -fpic cmult.c -I /usr/include/python3.7"
+        cmd = "gcc -c -Wall -Werror -fpic cmult.c"
         invoke.run(cmd)
         invoke.run("gcc -shared -o libcmult.so cmult.o")
         print("* Complete")
@@ -85,7 +85,7 @@ def test_ctypes_cpp(c):
         invoke.run("python3 ctypes_cpp_test.py", pty=True)
 
 
-@invoke.task()
+@invoke.task(build_cmult)
 def build_cffi(c):
     """Build the CFFI Python bindings"""
     print_banner("Building CFFI Module")
@@ -118,7 +118,7 @@ def build_cffi(c):
     print("* Complete")
 
 
-@invoke.task()
+@invoke.task(build_cffi)
 def test_cffi(c):
     """Run the script to test CFFI"""
     print_banner("Testing CFFI Module")
@@ -140,9 +140,9 @@ def compile_python_module(cpp_name, extension_name):
     invoke.run(
         "g++ -O3 -Wall -Werror -shared -std=c++11 -fPIC "
         "`python3 -m pybind11 --includes` "
-        "-I /usr/include/python3.7 -I .  "
+        "-I . "
         "{0} "
-        "-o {1}`python3.7-config --extension-suffix` "
+        "-o {1}`python3-config --extension-suffix` "
         "-L. -lcppmult -Wl,-rpath,.".format(cpp_name, extension_name)
     )
 
@@ -155,7 +155,7 @@ def build_pybind11(c):
     print("* Complete")
 
 
-@invoke.task()
+@invoke.task(build_pybind11)
 def test_pybind11(c):
     """Run the script to test PyBind11"""
     print_banner("Testing PyBind11 Module")
@@ -174,7 +174,7 @@ def build_cython(c):
     print("* Complete")
 
 
-@invoke.task()
+@invoke.task(build_cython)
 def test_cython(c):
     """Run the script to test Cython"""
     print_banner("Testing Cython Module")