Use python's setup.py to compile & install monitor

Find monitor shared object file using a relative path to `__file__`.

PyRedPitaya/raw_memory.py

@@ -1,8 +1,12 @@
 from ctypes import POINTER, c_uint32, cast, cdll, create_string_buffer, sizeof
 
 import numpy as np
+from pathlib import Path
+from importlib.machinery import EXTENSION_SUFFIXES
 
-libmonitor_file = "libmonitor.so"
+libmonitor_file = str(Path(__file__).parent / '..' / 'monitor{}'.format(
+    EXTENSION_SUFFIXES[0]
+))
 
 libmonitor = cdll.LoadLibrary(libmonitor_file)
 libmonitor.read_value.restype = c_uint32

setup.py

@@ -1,60 +1,14 @@
 import os
 from distutils.command.build import build
 from distutils.command.install import install
-from distutils.core import setup
+from distutils.core import setup, Extension
 from pathlib import Path
 
 from PyRedPitaya import __version__
 
-# If we want to overrid the build processe
-# For example, to compile de libmonitor and install it
-# Install libmonitor only for redpitaya, i.e. when
-
-build_dir = "monitor/"
-
-
-def compile_libmonitor():
-    cwd = os.getcwd()  # get current directory
-    try:
-        os.chdir(build_dir)
-        os.system("make clean")
-        os.system("make all")
-    finally:
-        os.chdir(cwd)
-
-
-def install_libmonitor(prefix=""):
-    cwd = os.getcwd()  # get current directory
-    try:
-        os.chdir(build_dir)
-        os.system("make install INSTALL_DIR={prefix}".format(prefix=prefix))
-    finally:
-        os.chdir(cwd)
-
-
-class lib_build(build):
-    def run(self):
-        compile_libmonitor()
-        build.run(self)
-
-
-class lib_install(install):
-    def run(self):
-        compile_libmonitor()
-        install_libmonitor(self.prefix)
-
-
-#        install.run(self)
-
-
-cmdclass = {}
-cmdclass["lib_build"] = lib_build
-cmdclass["lib_install"] = lib_install
-
 this_directory = Path(__file__).parent
 long_description = (this_directory / "README.rst").read_text()
 
-
 setup(
     name="PyRedPitaya",
     version=__version__,
@@ -67,7 +21,6 @@ def run(self):
     long_description_content_type="text/rst",
     packages=["PyRedPitaya", "PyRedPitaya.enum"],
     install_requires=["myhdl", "rpyc", "cached_property", "numpy"],
-    cmdclass=cmdclass,
     classifiers=[
         "Development Status :: 4 - Beta",
         "Intended Audience :: Developers",
@@ -82,4 +35,5 @@ def run(self):
         "Topic :: Software Development :: Libraries :: Python Modules",
     ],
     keywords=["redpitaya", "FPGA", "zynq"],
+    ext_modules=[Extension('monitor',['monitor/monitor.c'])]
 )