icinga2/third-party/cmake/PythonSetup.cmake

# Copyright: 2004 Martin F. Krafft <madduck@debian.org>
#            2008 Martin Schreiber <schreiberx@gmail.com>
#            2012-2013 Sebastian Ramacher <sramacher@debian.org>
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# This is a ugly workaround to be able to pass DESTDIR as --root to setup.py.
# cmake expands any occurence of $ENV{foo} with the value of foo while runing
# cmake and not while running make afterwards.

SET(PYTHON_EXECUTABLE "" CACHE FORCE "Python executable")
SET(PREFIX ${CMAKE_INSTALL_PREFIX} CACHE FORCE "cmake install prefix")
SET(WDIR "" CACHE FORCE "working directory")
SET(SETUP_PY "" CACHE FORCE "setup.py path")
SET(EXTRA_ARGS $ENV{SETUP_PY_EXTRA_ARGS} CACHE FORCE "extra arguments for setup.py")

SET(INSTALL_ROOT $ENV{DESTDIR})
IF(INSTALL_ROOT)
  SET(INSTALL_ROOT_ARGS "--root=$ENV{DESTDIR}")
ELSE(INSTALL_ROOT)
  SET(INSTALL_ROOT_ARGS "")
ENDIF(INSTALL_ROOT)

EXECUTE_PROCESS(
  COMMAND "${PYTHON_EXECUTABLE}"
    "${SETUP_PY}"
    install
    --prefix=${PREFIX}
    ${INSTALL_ROOT_ARGS}
    ${EXTRA_ARGS}
  WORKING_DIRECTORY "${WDIR}")