1 # Copyright (C) 2013 CEA/DEN, EDF R&D, OPEN CASCADE
3 # This library is free software; you can redistribute it and/or
4 # modify it under the terms of the GNU Lesser General Public
5 # License as published by the Free Software Foundation; either
6 # version 2.1 of the License.
8 # This library is distributed in the hope that it will be useful,
9 # but WITHOUT ANY WARRANTY; without even the implied warranty of
10 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 # Lesser General Public License for more details.
13 # You should have received a copy of the GNU Lesser General Public
14 # License along with this library; if not, write to the Free Software
15 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 # See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
19 # Author: Adrien Bruneton
22 # Python libraries and interpreter detection for SALOME
24 # !! Please read the generic detection procedure in SalomeMacros.cmake !!
26 # The interpreter is found first, and if OK, the corresponding libraries are searched.
27 # We ensure the version of the libraries matches the one of the interpreter.
30 # 1. Load environment or any previously detected Python
31 IF(DEFINED ENV{PYTHON_ROOT_DIR})
32 FILE(TO_CMAKE_PATH "$ENV{PYTHON_ROOT_DIR}" _PYTHON_ROOT_DIR_ENV)
33 SET(_dflt_value "${_PYTHON_ROOT_DIR_ENV}")
35 # will be blank if no Python was previously loaded
36 SET(_dflt_value "${PYTHON_ROOT_DIR_EXP}")
40 SET(PYTHON_ROOT_DIR "${_dflt_value}" CACHE PATH "Path to Python directory (interpreter and libs)")
42 # 2. Find package - config mode first (i.e. looking for XYZ-config.cmake)
43 IF(EXISTS "${PYTHON_ROOT_DIR}")
44 # Hope to find direclty a CMake config file there
45 SET(_CONF_DIR "${PYTHON_ROOT_DIR}/share/cmake")
47 # Try find_package in config mode with a hard-coded guess. This
49 FIND_PACKAGE(Python CONFIG QUIET PATHS "${_CONF_DIR}")
50 MARK_AS_ADVANCED(Python_DIR)
53 LIST(APPEND CMAKE_PREFIX_PATH "${PYTHON_ROOT_DIR}")
55 MESSAGE(STATUS "Found Python in CONFIG mode!")
59 # Otherwise try the standard way (module mode, with the standard CMake Find*** macro):
60 SALOME_FIND_PACKAGE(SalomePython PythonInterp MODULE)
61 SET(_found1 ${PYTHONINTERP_FOUND})
63 IF (PYTHONINTERP_FOUND)
64 # Now ensure we find the Python libraries matching the interpreter:
65 # This uses the variable PYTHON_EXECUTABLE
66 GET_FILENAME_COMPONENT(_python_dir "${PYTHON_EXECUTABLE}" PATH)
67 GET_FILENAME_COMPONENT(CMAKE_INCLUDE_PATH "${_python_dir}/../include/python${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR}" ABSOLUTE)
68 GET_FILENAME_COMPONENT(CMAKE_LIBRARY_PATH "${_python_dir}/../lib" ABSOLUTE)
69 # For a Windows install, this might look more like this:
71 LIST(APPEND CMAKE_LIBRARY_PATH "${_python_dir}/libs" ABSOLUTE)
72 LIST(APPEND CMAKE_INCLUDE_PATH "${_python_dir}/include" ABSOLUTE)
74 # Override the EXACT and VERSION settings of the SalomePython module
75 # to force the next call to SALOME_FIND_PACKAGE() to find the exact matching
77 SET(_old_EXACT ${SalomePython_FIND_VERSION_EXACT})
78 SET(_old_VERSION "${SalomePython_FIND_VERSION}")
79 SET(SalomePython_FIND_VERSION_EXACT TRUE)
80 SET(SalomePython_FIND_VERSION "${PYTHON_VERSION_STRING}")
81 # Prepare call to FIND_PACKAGE(PythonLibs) and ensure priority is given to
82 # the location found for the interpreter:
83 GET_FILENAME_COMPONENT(_tmp "${_python_dir}" PATH)
84 # SET(PYTHON_LIBRARY ${_tmp}/lib)
85 # SET(PYTHON_INCLUDE_DIR ${_tmp}/include)
86 SALOME_FIND_PACKAGE(SalomePython PythonLibs MODULE)
88 SET(SalomePython_FIND_VERSION_EXACT ${_old_EXACT})
89 SET(SalomePython_FIND_VERSION "${_old_VERSION}")
92 # Set the FOUND flag for SalomePython:
93 SET(SALOMEPYTHON_FOUND FALSE)
94 IF (_found1 AND PYTHONLIBS_FOUND)
95 SET(SALOMEPYTHON_FOUND TRUE)
98 IF (SALOMEPYTHON_FOUND)
99 MESSAGE(STATUS "Python interpreter and Python libraries found:")
100 MESSAGE(STATUS "Python libraries: ${PYTHON_LIBRARY}")
101 MESSAGE(STATUS "Python include dir: ${PYTHON_INCLUDE_DIR}")
103 # 3. Set the root dir which was finally retained
104 # For Python this is the grand-parent of the
106 GET_FILENAME_COMPONENT(_tmp_ROOT_DIR "${PYTHON_INCLUDE_DIR}" PATH)
108 GET_FILENAME_COMPONENT(_tmp_ROOT_DIR "${_tmp_ROOT_DIR}" PATH)
111 # 4. Warn if CMake found something not located under ENV(XYZ_ROOT_DIR)
112 IF(DEFINED ENV{PYTHON_ROOT_DIR})
113 SALOME_CHECK_EQUAL_PATHS(_res "${_tmp_ROOT_DIR}" "${_PYTHON_ROOT_DIR_ENV}")
115 MESSAGE(WARNING "Python was found, but not a the path given by the "
116 "environment PYTHON_ROOT_DIR! Is the variable correctly set?")
118 MESSAGE(STATUS "Python found directory matches what was specified in the PYTHON_ROOT_DIR, all good!")
122 # 5. Conflict detection
123 # 5.1 From another prerequisite using Python
124 IF(PYTHON_ROOT_DIR_EXP)
125 SALOME_CHECK_EQUAL_PATHS(_res "${_tmp_ROOT_DIR}" "${PYTHON_ROOT_DIR_EXP}")
127 MESSAGE(WARNING "Warning: Python: detected version conflicts with a previously found Python!"
128 "The two paths are " ${_tmp_ROOT_DIR} " vs " ${PYTHON_ROOT_DIR_EXP})
130 MESSAGE(STATUS "Python directory matches what was previously exposed by another prereq, all good!")
136 EXECUTE_PROCESS(COMMAND ${PYTHON_EXECUTABLE} -c "import numpy ; import sys ; sys.stdout.write(numpy.get_include())" OUTPUT_VARIABLE NUMPY_INCLUDE_DIR ERROR_QUIET )
137 IF(NUMPY_INCLUDE_DIR)
138 SET(NUMPY_FOUND TRUE)
139 ENDIF(NUMPY_INCLUDE_DIR)
141 SET(PYTHON_INCLUDE_DIRS ${NUMPY_INCLUDE_DIR} ${PYTHON_INCLUDE_DIRS})
142 SET(PYTHON_DEFINITIONS "${PYTHON_DEFINITIONS} -DWITH_NUMPY")
143 MESSAGE(STATUS "numpy found : ${NUMPY_INCLUDE_DIR}")
145 MESSAGE(STATUS "numpy not found")
150 MESSAGE(STATUS "Python was only partially (or not at all) found .")