yap-6.3/cmake/python.cmake

set (Python_ADDITIONAL_VERSIONS 3.7 3.6 3.5 3.6 3.4 )

find_package(PythonInterp)
# find_package(PythonLibs)


#   PYTHONLIBS_FOUND           - have the Python libs been found
#   PYTHON_LIBRARIES           - path to the python library
#   PYTHON_INCLUDE_PATH        - path to where Python.h is found (deprecated)
#   PYTHON_INCLUDE_DIRS        - path to where Python.h is found
#   PYTHON_DEBUG_LIBRARIES     - path to the debug library (deprecated)
#   PYTHONLIBS_VERSION_STRING  - version of the Python libs found (since CMake 2.8.8)
#
#

execute_process ( COMMAND ${PYTHON_EXECUTABLE} -c "import sysconfig; print(
 sysconfig.get_path( 'include' ) )"
  OUTPUT_VARIABLE _ABS_PYTHON_INCLUDE_PATH
  OUTPUT_STRIP_TRAILING_WHITESPACE )

get_filename_component ( ABS_PYTHON_INCLUDE_PATH ${_ABS_PYTHON_INCLUDE_PATH} ABSOLUTE )

set ( PYTHON_INCLUDE_DIR
  ${ABS_PYTHON_INCLUDE_PATH}
  CACHE "PATH" "Directory with Python.h "
  )

set ( PYTHON_INCLUDE_DIRS
  ${ABS_PYTHON_INCLUDE_PATH}
  CACHE "PATH" "Python.h Dir  (Deprecated)"
  )

execute_process ( COMMAND ${PYTHON_EXECUTABLE} "${CMAKE_SOURCE_DIR}/cmake/libfind.py"
  OUTPUT_VARIABLE ABS_PYTHON_SYSLIB
  OUTPUT_STRIP_TRAILING_WHITESPACE )

set ( PYTHON_LIBRARY
  ${ABS_PYTHON_SYSLIB}
  CACHE "FILEPATH" "Python Library"
  )

set ( PYTHON_LIBRARIES
  ${PYTHON_LIBRARY}
  CACHE "FILEPATH" "Python Library (Deprecated)"
  )

if ( (EXISTS ${PYTHON_LIBRARY}) AND ( EXISTS ${PYTHON_INCLUDE_DIR}) )
  set ( PYTHONLIBS_FOUND ON
    CACHE "BOOLEAN" "Python installed")
  #    else()

  #find_package(PythonLibs)
endif()


include_directories( BEFORE ${PYTHON_INCLUDE_DIR} )
  
LIST( APPEND
  CMAKE_REQUIRED_INCLUDES ${PYTHON_INCLUDE_DIR}  ${CMAKE_REQUIRED_INCLUDES})

check_include_file(Python.h HAVE_PYTHON_H)

IF (PYTHONLIBS_FOUND)
  add_subDIRECTORY (packages/python)
ENDIF()

if (PYTHONLIBS_FOUND AND SWIG_FOUND)
  add_subdirectory(packages/python/swig)
  include(FindPythonModule)

  find_python_module( jupyter )

  if (PY_JUPYTER)
    add_subdirectory(packages/python/yap_kernel)
  ENDIF()
endif()