python: Support building of both python2 & python3 bindings

Signed-off-by: Brendan Le Foll <brendan.le.foll@intel.com>

src/python/CMakeLists.txt

@@ -1,50 +1,5 @@
-find_package (PythonLibs ${PYTHONBUILD_VERSION} REQUIRED)
+set_source_files_properties (mraapython.i PROPERTIES CPLUSPLUS ON)
+set_source_files_properties (mraapython.i PROPERTIES SWIG_FLAGS "-I${CMAKE_BINARY_DIR}/src")
 
-include_directories(
-  ${CMAKE_CURRENT_SOURCE_DIR}/..
-  ${PYTHON_INCLUDE_DIRS}
-)
-
-set_source_files_properties (mraa.i PROPERTIES CPLUSPLUS ON)
-set_source_files_properties (mraa.i PROPERTIES SWIG_FLAGS "-I${CMAKE_BINARY_DIR}/src")
-swig_add_module (python-mraa python mraa.i mraapy.c)
-swig_link_libraries (python-mraa ${PYTHON_LIBRARIES} mraa)
-
-if (DOXYGEN_FOUND)
-  foreach (_file ${DOCCLASSES})
-    add_dependencies (${SWIG_MODULE_python-mraa_REAL_NAME} ${_file}class_doc_i)
-  endforeach ()
-  add_dependencies (${SWIG_MODULE_python-mraa_REAL_NAME} common_hpp_doc_i)
-
-  add_custom_target (pydoc
-    pydoc -w ${CMAKE_CURRENT_BINARY_DIR}/mraa.py ${CMAKE_CURRENT_BINARY_DIR}/
-    WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
-    COMMENT "Generating API documentation with pydoc" VERBATIM
-  )
-endif ()
-
-set_target_properties (${SWIG_MODULE_python-mraa_REAL_NAME} PROPERTIES
-  OUTPUT_NAME _mraa
-  COMPILE_FLAGS "${CMAKE_C_FLAGS} -DSWIGPYTHON=${SWIG_FOUND}"
-)
-
-execute_process (
-   COMMAND ${PYTHON_EXECUTABLE} -c
-       "import site, sys; sys.stdout.write(site.PREFIXES[-1])"
-   OUTPUT_VARIABLE PYTHON_PREFIX
-)
-file (TO_CMAKE_PATH "${PYTHON_PREFIX}" PYTHON_PREFIX)
-execute_process (
-   COMMAND ${PYTHON_EXECUTABLE} -c
-       "import site, sys; sys.stdout.write(site.getusersitepackages().replace(site.getuserbase(), site.PREFIXES[-1]))"
-   OUTPUT_VARIABLE PYTHON_SITE_DIR
-)
-file (TO_CMAKE_PATH "${PYTHON_SITE_DIR}" PYTHON_SITE_DIR)
-string (REGEX REPLACE "^${PYTHON_PREFIX}/" ""
-   PYTHON_SITE_DIR "${PYTHON_SITE_DIR}")
-
-install (FILES ${CMAKE_CURRENT_BINARY_DIR}/_mraa.so
-         ${CMAKE_CURRENT_BINARY_DIR}/mraa.py
-         DESTINATION ${PYTHON_SITE_DIR})
-
-add_subdirectory (docs)
+add_subdirectory (python2)
+add_subdirectory (python3)