Adding functionality to build python with required modules

file(COPY SubKit doc tests LICENSE MANIFEST.in README.md DESTINATION ${CMAKE_CURRENT_BINARY_DIR})

find_package(PythonInterp 2.7 REQUIRED )

find_package(PythonLibs 2.7 REQUIRED )

find_program(PYTHON "python")

#find_package(PythonInterp 2.7.14 REQUIRED )

#find_package(PythonLibs 2.7.14 REQUIRED )

#find_program(PYTHON "python")

if (PYTHON)

    set(SETUP_PY_IN "${CMAKE_CURRENT_SOURCE_DIR}/setup.py.in")

    set(SETUP_PY    "${CMAKE_CURRENT_BINARY_DIR}/setup.py")

    set(DEPS        "${CMAKE_CURRENT_SOURCE_DIR}/SubKit/__init__.py")

    set(OUTPUT      "${CMAKE_CURRENT_BINARY_DIR}/build/timestamp")

#if(NOT (PYTHON))

  if(UNIX AND NOT APPLE)

     MESSAGE("Start ${PYTHON_CONFIGURE_COMMAND}")

     ADD_CUSTOM_COMMAND(

     COMMAND mkdir -p ${CMAKE_INSTALL_PREFIX}

     COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/SubKit/utils/bundle/linux/Miniconda2-latest-Linux-x86_64.sh  -b -u -p ${CMAKE_INSTALL_PREFIX}/conda

     COMMAND ${CMAKE_INSTALL_PREFIX}/conda/bin/pip install -r ${CMAKE_CURRENT_BINARY_DIR}/SubKit/utils/bundle/linux/requirements.txt --no-index --find-links file://${CMAKE_CURRENT_BINARY_DIR}/SubKit/utils/bundle/linux

     OUTPUT miniconda.log

     COMMENT "Building python via MiniConda"

     WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/SubKit/utils/bundle/linux

     )

     ADD_CUSTOM_TARGET(

     BuildPython ALL

     DEPENDS miniconda.log

     )

  else()

     MESSAGE("Start ${PYTHON_CONFIGURE_COMMAND}")

     ADD_CUSTOM_COMMAND(

     COMMAND mkdir -p ${CMAKE_INSTALL_PREFIX}

     COMMAND ${CMAKE_CURRENT_SOURCE_DIR}/SubKit/utils/bundle/linux/Miniconda2-latest-Linux-x86_64.sh  -b -p ${CMAKE_INSTALL_PREFIX}/conda

     COMMAND ${CMAKE_INSTALL_PREFIX}/conda/bin/pip install -r ${CMAKE_CURRENT_BINARY_DIR}/SubKit/util/bundle/macos/requirements.txt --no-index --find-links file://${CMAKE_CURRENT_BINARY_DIR}/SubKit/util/bundle/macos

     OUTPUT miniconda.log

     COMMENT "Building python via MiniConda"

     WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/SubKit/utils

     )

     ADD_CUSTOM_TARGET(

     BuildPython ALL

     DEPENDS miniconda.log

     )

  endif()

#  ADD_CUSTOM_TARGET(

#  always_run_target ALL

#  DEPENDS miniconda.log

#  )

#  EXECUTE_PROCESS(

#  COMMAND ${PYTHON_UPDATE_CONFIGURE_COMMAND}

#  WORKING_DIRECTORY {CMAKE_CURRENT_SOURCE_DIR}/SubKit/util

#  )

    configure_file(${SETUP_PY_IN} ${SETUP_PY})

#    set(SETUP_PY_IN "${CMAKE_CURRENT_SOURCE_DIR}/setup.py.in")

#    set(SETUP_PY    "${CMAKE_CURRENT_BINARY_DIR}/setup.py")

#    set(DEPS        "${CMAKE_CURRENT_SOURCE_DIR}/SubKit/__init__.py")

#    set(OUTPUT      "${CMAKE_CURRENT_BINARY_DIR}/build/timestamp")

    add_custom_command(OUTPUT ${OUTPUT}

                       COMMAND ${PYTHON} ${SETUP_PY} build

                       COMMAND ${CMAKE_COMMAND} -E touch ${OUTPUT}

                       DEPENDS ${DEPS})

#    configure_file(${SETUP_PY_IN} ${SETUP_PY})

    add_custom_target(subkit ALL DEPENDS ${OUTPUT})

#    add_custom_command(OUTPUT ${OUTPUT}

#                       COMMAND ${PYTHON} ${SETUP_PY} build

#                       COMMAND ${CMAKE_COMMAND} -E touch ${OUTPUT}

#                       DEPENDS ${DEPS})

#

#    add_custom_target(subkit ALL DEPENDS ${OUTPUT})

    # This next line does not work because python install complains this directory is not in the python path

    #install(CODE "execute_process(COMMAND ${PYTHON} ${CMAKE_CURRENT_BINARY_DIR}/setup.py install --home=${CMAKE_INSTALL_PREFIX})")

    # So we are stuck with installing SubKit to the site-packages instead

    # Specify --user to do a local install

    install(CODE "execute_process(COMMAND ${PYTHON} ${CMAKE_CURRENT_BINARY_DIR}/setup.py install --user)")

endif()

#    install(CODE "execute_process(COMMAND ${PYTHON} ${CMAKE_CURRENT_BINARY_DIR}/setup.py install --user)")

#endif()