--- /dev/null
+# Copyright (C) 2013 CEA/DEN, EDF R&D, OPEN CASCADE
+#
+# This library is free software; you can redistribute it and/or
+# modify it under the terms of the GNU Lesser General Public
+# License as published by the Free Software Foundation; either
+# version 2.1 of the License.
+#
+# This library is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+# Lesser General Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with this library; if not, write to the Free Software
+# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+#
+# See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
+#
+# Author: Adrien Bruneton
+#
+
+# Python libraries and interpreter detection for libBatch
+# The interpreter is found first, and if OK, the corresponding libraries are searched.
+# We ensure the version of the libraries matches the one of the interpreter.
+#
+
+# 1. Load environment or any previously detected Python
+IF(DEFINED ENV{PYTHON_ROOT_DIR})
+ FILE(TO_CMAKE_PATH "$ENV{PYTHON_ROOT_DIR}" _PYTHON_ROOT_DIR_ENV)
+ SET(_dflt_value "${_PYTHON_ROOT_DIR_ENV}")
+ELSE()
+ # will be blank if no Python was previously loaded
+ SET(_dflt_value "${PYTHON_ROOT_DIR_EXP}")
+ENDIF()
+
+# Make cache entry
+SET(PYTHON_ROOT_DIR "${_dflt_value}" CACHE PATH "Path to Python directory (interpreter and libs)")
+
+# 2. Find package - config mode first (i.e. looking for XYZ-config.cmake)
+IF(EXISTS "${PYTHON_ROOT_DIR}")
+ # Hope to find direclty a CMake config file there
+ SET(_CONF_DIR "${PYTHON_ROOT_DIR}/share/cmake")
+
+ # Try find_package in config mode with a hard-coded guess. This
+ # has the priority.
+ FIND_PACKAGE(Python CONFIG QUIET PATHS "${_CONF_DIR}")
+ MARK_AS_ADVANCED(Python_DIR)
+
+ IF (NOT PYTHON_FOUND)
+ LIST(APPEND CMAKE_PREFIX_PATH "${PYTHON_ROOT_DIR}")
+ ELSE()
+ MESSAGE(STATUS "Found Python in CONFIG mode!")
+ ENDIF()
+ENDIF()
+
+# Otherwise try the standard way (module mode, with the standard CMake Find*** macro):
+SALOME_FIND_PACKAGE(LibbatchPython PythonInterp MODULE)
+SET(_found1 ${PYTHONINTERP_FOUND})
+
+IF (PYTHONINTERP_FOUND)
+ # Now ensure we find the Python libraries matching the interpreter:
+ # This uses the variable PYTHON_EXECUTABLE
+ GET_FILENAME_COMPONENT(_python_dir "${PYTHON_EXECUTABLE}" PATH)
+ GET_FILENAME_COMPONENT(CMAKE_INCLUDE_PATH "${_python_dir}/../include/python${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR}" ABSOLUTE)
+ GET_FILENAME_COMPONENT(CMAKE_LIBRARY_PATH "${_python_dir}/../lib" ABSOLUTE)
+ # For a Windows install, this might look more like this:
+ IF(WIN32)
+ LIST(APPEND CMAKE_LIBRARY_PATH "${_python_dir}/libs" ABSOLUTE)
+ LIST(APPEND CMAKE_INCLUDE_PATH "${_python_dir}/include" ABSOLUTE)
+ ENDIF()
+ # Override the EXACT and VERSION settings of the LibbatchPython module
+ # to force the next call to SALOME_FIND_PACKAGE() to find the exact matching
+ # version:
+ SET(_old_EXACT ${LibbatchPython_FIND_VERSION_EXACT})
+ SET(_old_VERSION "${LibbatchPython_FIND_VERSION}")
+ SET(LibbatchPython_FIND_VERSION_EXACT TRUE)
+ SET(LibbatchPython_FIND_VERSION "${PYTHON_VERSION_STRING}")
+ # Prepare call to FIND_PACKAGE(PythonLibs) and ensure priority is given to
+ # the location found for the interpreter:
+ GET_FILENAME_COMPONENT(_tmp "${_python_dir}" PATH)
+# SET(PYTHON_LIBRARY ${_tmp}/lib)
+# SET(PYTHON_INCLUDE_DIR ${_tmp}/include)
+ SALOME_FIND_PACKAGE(LibbatchPython PythonLibs MODULE)
+ # Restore variables:
+ SET(LibbatchPython_FIND_VERSION_EXACT ${_old_EXACT})
+ SET(LibbatchPython_FIND_VERSION "${_old_VERSION}")
+ENDIF()
+
+# Set the FOUND flag for LibbatchPython:
+SET(LIBBATCHPYTHON_FOUND FALSE)
+IF (_found1 AND PYTHONLIBS_FOUND)
+ SET(LIBBATCHPYTHON_FOUND TRUE)
+ENDIF()
+
+IF (LIBBATCHPYTHON_FOUND)
+ MESSAGE(STATUS "Python interpreter and Python libraries found:")
+ MESSAGE(STATUS "Python libraries: ${PYTHON_LIBRARY}")
+ MESSAGE(STATUS "Python include dir: ${PYTHON_INCLUDE_DIR}")
+
+ # 3. Set the root dir which was finally retained
+ # For Python this is the grand-parent of the
+ # include directory:
+ GET_FILENAME_COMPONENT(_tmp_ROOT_DIR "${PYTHON_INCLUDE_DIR}" PATH)
+ GET_FILENAME_COMPONENT(_tmp_ROOT_DIR "${_tmp_ROOT_DIR}" PATH)
+
+ # 4. Warn if CMake found something not located under ENV(XYZ_ROOT_DIR)
+ IF(DEFINED ENV{PYTHON_ROOT_DIR})
+ SALOME_CHECK_EQUAL_PATHS(_res "${_tmp_ROOT_DIR}" "${_PYTHON_ROOT_DIR_ENV}")
+ IF(NOT _res)
+ MESSAGE(WARNING "Python was found, but not a the path given by the "
+"environment PYTHON_ROOT_DIR! Is the variable correctly set?")
+ ELSE()
+ MESSAGE(STATUS "Python found directory matches what was specified in the PYTHON_ROOT_DIR, all good!")
+ ENDIF()
+ ENDIF()
+
+ # 5. Conflict detection
+ # 5.1 From another prerequisite using Python
+ IF(PYTHON_ROOT_DIR_EXP)
+ SALOME_CHECK_EQUAL_PATHS(_res "${_tmp_ROOT_DIR}" "${PYTHON_ROOT_DIR_EXP}")
+ IF(NOT _res)
+ MESSAGE(WARNING "Warning: Python: detected version conflicts with a previously found Python!"
+ "The two paths are " ${_tmp_ROOT_DIR} " vs " ${PYTHON_ROOT_DIR_EXP})
+ ELSE()
+ MESSAGE(STATUS "Python directory matches what was previously exposed by another prereq, all good!")
+ ENDIF()
+ ENDIF()
+
+ # 6. Finally retained variable:
+ SET(PYTHON_ROOT_DIR "${_tmp_ROOT_DIR}")
+
+ # 7. Specifics
+ ## None here
+ELSE(LIBBATCHPYTHON_FOUND)
+ MESSAGE(STATUS "Python was only partially (or not at all) found .")
+ENDIF(LIBBATCHPYTHON_FOUND)
+
