cmake: minor cleanup and changes for pydoc target

Signed-off-by: Mihai Tudor Panu <mihai.tudor.panu@intel.com>

CMakeLists.txt

     list (GET PYTHON_VERSION_LIST 0 PYTHON_VERSION_MAJOR)
     list (GET PYTHON_VERSION_LIST 1 PYTHON_VERSION_MINOR)
     set (SITE_PACKAGES ${CMAKE_INSTALL_PREFIX}/${LIB_INSTALL_DIR}/python${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR}/site-packages)
-
-    # throw a warning if site-packages doesn't exist, might need a more robust way on adding make install dependency and paths
-    if (NOT EXISTS ${CMAKE_CURRENT_BINARY_DIR}/${SITE_PACKAGES})
-      message( WARNING " - Sphinx documentation 'pydoc' target depends on python libs generated by 'install' target. Run that first!")
-    endif()
-
     configure_file (${CMAKE_CURRENT_SOURCE_DIR}/doxy/conf.py.in ${CMAKE_CURRENT_BINARY_DIR}/pydoc/conf.py @ONLY)
     configure_file (${CMAKE_CURRENT_SOURCE_DIR}/doxy/index.rst ${CMAKE_CURRENT_BINARY_DIR}/pydoc/index.rst COPYONLY)
     add_custom_target (pydoc
-      COMMAND rm -r ${CMAKE_BINARY_DIR}/python-staging && mkdir -p ${CMAKE_BINARY_DIR}/python-staging
-      COMMAND find ${CMAKE_BINARY_DIR}/src -name "_pyupm_*.so" -exec cp {} ${CMAKE_BINARY_DIR}/python-staging \;
-      COMMAND find ${CMAKE_BINARY_DIR}/src -name "pyupm_*.py" -exec cp {} ${CMAKE_BINARY_DIR}/python-staging \;
-      COMMAND ${SPHINX_API_EXECUTABLE} -f -o pydoc  ${CMAKE_BINARY_DIR}/python-staging
+      COMMAND rm -r -f ${CMAKE_BINARY_DIR}/pyupm && mkdir -p ${CMAKE_BINARY_DIR}/pyupm
+      COMMAND find ${CMAKE_BINARY_DIR}/src -name "_pyupm_*.so" -exec cp {} ${CMAKE_BINARY_DIR}/pyupm \;
+      COMMAND find ${CMAKE_BINARY_DIR}/src -name "pyupm_*.py" -exec cp {} ${CMAKE_BINARY_DIR}/pyupm \;
+      COMMAND ${SPHINX_API_EXECUTABLE} -f -o pydoc  ${CMAKE_BINARY_DIR}/pyupm
       # todo: use a separate cmake FILE module for string replacement instead
       COMMAND ${SPHINX_EXECUTABLE} -b html pydoc html/python
       COMMAND sed -i.bak s|\">pyupm_|\">|g html/python/index.html html/python/modules.html
   find_package(Yuidoc)
   if(YUIDOC_FOUND)
     # node required for Yuidoc documentation
-	find_package(Node)
-	file(GLOB_RECURSE JSDOC_FILES RELATIVE ${CMAKE_CURRENT_SOURCE_DIR}/doxy/node doxy/node/*)
-	foreach(JSDOC_FILE ${JSDOC_FILES})
-	  configure_file(${CMAKE_CURRENT_SOURCE_DIR}/doxy/node/${JSDOC_FILE} ${CMAKE_CURRENT_BINARY_DIR}/${JSDOC_FILE} COPYONLY)
-	endforeach()
-	add_custom_target(jsdoc
-	  NODE_PATH=${NODE_PATH} ${NODE_EXECUTABLE} docgen -m upm -i xml -t ${CMAKE_CURRENT_SOURCE_DIR}/src -g ../../../../docs/images/
-	  COMMAND ${YUIDOC_EXECUTABLE} -C --no-sort --helpers generators/yuidoc/helper.js --themedir generators/yuidoc/tmpl -o html/node jsdoc/yuidoc/upm
-	  COMMAND NODE_PATH=${NODE_PATH} ${NODE_EXECUTABLE} tolower -i html/node
-	  DEPENDS doc
-	  WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+    find_package(Node)
+    file(GLOB_RECURSE JSDOC_FILES RELATIVE ${CMAKE_CURRENT_SOURCE_DIR}/doxy/node doxy/node/*)
+    foreach(JSDOC_FILE ${JSDOC_FILES})
+      configure_file(${CMAKE_CURRENT_SOURCE_DIR}/doxy/node/${JSDOC_FILE} ${CMAKE_CURRENT_BINARY_DIR}/${JSDOC_FILE} COPYONLY)
+    endforeach()
+    add_custom_target(jsdoc
+      NODE_PATH=${NODE_PATH} ${NODE_EXECUTABLE} docgen -m upm -i xml -t ${CMAKE_CURRENT_SOURCE_DIR}/src -g ../../../../docs/images/
+      COMMAND ${YUIDOC_EXECUTABLE} -C --no-sort --helpers generators/yuidoc/helper.js --themedir generators/yuidoc/tmpl -o html/node jsdoc/yuidoc/upm
+      COMMAND NODE_PATH=${NODE_PATH} ${NODE_EXECUTABLE} tolower -i html/node
+      DEPENDS doc
+      WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
       COMMENT "Generating API documentation with Yuidoc" VERBATIM
-	)
+    )
   endif()
 endif()
 

doxy/conf.py.in

 # If extensions (or modules to document with autodoc) are in another directory,
 # add these directories to sys.path here. If the directory is relative to the
 # documentation root, use os.path.abspath to make it absolute, like shown here.
-sys.path.insert(0, "@CMAKE_CURRENT_BINARY_DIR@/python-staging/")
+sys.path.insert(0, "@CMAKE_CURRENT_BINARY_DIR@/pyupm/")
 sys.path.insert(0, "@MRAA_LIBDIR@@LIB_SUFFIX@")
 
 # -- General configuration ------------------------------------------------