# Copyright (c) PLUMgrid, Inc.
# Licensed under the Apache License, Version 2.0 (the "License")

set(PYTHON_SRC __init__.py perf.py tcp.py utils.py libbcc.py table.py usdt.py)

foreach (PY_SRC ${PYTHON_SRC})
  configure_file(bcc/${PY_SRC} ${CMAKE_CURRENT_BINARY_DIR}/bcc/${PY_SRC} COPYONLY)
endforeach()

if(NOT PYTHON_CMD)
  set(PYTHON_CMD "python")
endif()

configure_file(setup.py.in ${CMAKE_CURRENT_BINARY_DIR}/setup.py @ONLY)
configure_file(bcc/version.py.in ${CMAKE_CURRENT_BINARY_DIR}/bcc/version.py @ONLY)
if(EXISTS "/etc/debian_version")
  set(PYTHON_FLAGS "${PYTHON_FLAGS} --install-layout deb")
endif()

foreach(PY_CMD ${PYTHON_CMD})
  string(REPLACE "/" "-" PY_CMD_ESCAPED ${PY_CMD})

  set(PY_DEPENDS ${CMAKE_CURRENT_SOURCE_DIR}/bcc/__init__.py ${CMAKE_CURRENT_BINARY_DIR}/setup.py)
  if (PREVIOUS_PY)
    set(PY_DEPENDS ${PY_DEPENDS} ${PREVIOUS_PY})
  endif()

  set(PIP_INSTALLABLE "${CMAKE_CURRENT_BINARY_DIR}/dist-${PY_CMD_ESCAPED}/bcc-${REVISION}.tar.gz")
  # build the pip installable
  add_custom_command(OUTPUT ${PIP_INSTALLABLE}
    COMMAND ${PY_CMD} setup.py sdist --dist-dir dist-${PY_CMD_ESCAPED}
    WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
    DEPENDS ${PY_DEPENDS}
    )
  add_custom_target(bcc_py_${PY_CMD_ESCAPED} ALL DEPENDS ${PIP_INSTALLABLE})

  install(CODE "execute_process(COMMAND ${PY_CMD} setup.py install -f ${PYTHON_FLAGS}
    --prefix=${CMAKE_INSTALL_PREFIX} WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})"
    COMPONENT python)

  set(PREVIOUS_PY ${PIP_INSTALLABLE})
endforeach()