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# cmake/modules/python.cmake
#
# Copyright (C) 2006 Alan W. Irwin
#
# This file is part of PLplot.
#
# PLplot is free software; you can redistribute it and/or modify
# it under the terms of the GNU Library General Public License as published
# by the Free Software Foundation; version 2 of the License.
#
# PLplot 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 Library General Public License for more details.
#
# You should have received a copy of the GNU Library General Public License
# along with the file PLplot; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
# Module for determining Python bindings configuration options
# Options to enable Python bindings
if(DEFAULT_NO_BINDINGS)
option(ENABLE_python "Enable Python bindings" OFF)
else(DEFAULT_NO_BINDINGS)
option(ENABLE_python "Enable Python bindings" ON)
endif(DEFAULT_NO_BINDINGS)
if(ENABLE_python AND NOT BUILD_SHARED_LIBS)
message(STATUS "WARNING: "
"Python requires shared libraries. Disabling python bindings")
set(ENABLE_python OFF CACHE BOOL "Enable Python bindings" FORCE)
endif(ENABLE_python AND NOT BUILD_SHARED_LIBS)
if(ENABLE_python AND NOT SWIG_FOUND)
message(STATUS "WARNING: "
"swig not found. Disabling python bindings")
set(ENABLE_python OFF CACHE BOOL "Enable Python bindings" FORCE)
endif(ENABLE_python AND NOT SWIG_FOUND)
if(ENABLE_python)
# Check for Python interpreter (which also defines PYTHON_EXECUTABLE)
find_package(PythonInterp)
if(NOT PYTHONINTERP_FOUND)
message(STATUS "WARNING: "
"python interpreter not found. Disabling python bindings")
set(ENABLE_python OFF CACHE BOOL "Enable Python bindings" FORCE)
endif(NOT PYTHONINTERP_FOUND)
endif(ENABLE_python)
if(ENABLE_python)
# Check for Python libraries which defines
# PYTHON_LIBRARIES = path to the python library
# PYTHON_INCLUDE_PATH = path to where Python.h is found
find_package(PythonLibs)
if(NOT PYTHON_LIBRARIES OR NOT PYTHON_INCLUDE_PATH)
message(STATUS "WARNING: "
"python library and/or header not found. Disabling python bindings")
set(ENABLE_python OFF CACHE BOOL "Enable Python bindings" FORCE)
endif(NOT PYTHON_LIBRARIES OR NOT PYTHON_INCLUDE_PATH)
endif(ENABLE_python)
option(HAVE_NUMPY "Use numpy rather than deprecated Numeric" ON)
if(ENABLE_python AND NOT NUMERIC_INCLUDE_PATH)
if(HAVE_NUMPY)
# First check for new version of numpy (replaces Numeric)
execute_process(
COMMAND
${PYTHON_EXECUTABLE} -c "import numpy; print numpy.get_include()"
OUTPUT_VARIABLE NUMPY_INCLUDE_PATH
RESULT_VARIABLE NUMPY_ERR
OUTPUT_STRIP_TRAILING_WHITESPACE
)
if(NUMPY_ERR)
set(HAVE_NUMPY OFF CACHE BOOL "Use numpy rather than deprecated Numeric" FORCE)
endif(NUMPY_ERR)
endif(HAVE_NUMPY)
if(HAVE_NUMPY)
find_path(
NUMERIC_INCLUDE_PATH
arrayobject.h
${NUMPY_INCLUDE_PATH}/numpy
)
if(NUMERIC_INCLUDE_PATH)
set(PYTHON_NUMERIC_NAME numpy CACHE INTERNAL "")
endif(NUMERIC_INCLUDE_PATH)
else(HAVE_NUMPY)
# Check for Python Numeric header in same include path or Numeric
# subdirectory of that path to avoid version mismatch.
find_path(
NUMERIC_INCLUDE_PATH
arrayobject.h
${PYTHON_INCLUDE_PATH} ${PYTHON_INCLUDE_PATH}/Numeric
)
if(NUMERIC_INCLUDE_PATH)
set(PYTHON_NUMERIC_NAME Numeric CACHE INTERNAL "")
endif (NUMERIC_INCLUDE_PATH)
endif(HAVE_NUMPY)
if(NUMERIC_INCLUDE_PATH)
set(
PYTHON_INCLUDE_PATH
${PYTHON_INCLUDE_PATH} ${NUMERIC_INCLUDE_PATH}
CACHE INTERNAL "")
else(NUMERIC_INCLUDE_PATH)
if(HAVE_NUMPY)
message(STATUS "WARNING: "
"NumPy header not found. Disabling python bindings")
else(HAVE_NUMPY)
message(STATUS "WARNING: "
"Numeric header not found. Disabling python bindings")
endif(HAVE_NUMPY)
set(ENABLE_python OFF CACHE BOOL "Enable Python bindings" FORCE)
endif(NUMERIC_INCLUDE_PATH)
endif(ENABLE_python AND NOT NUMERIC_INCLUDE_PATH)
if(ENABLE_python AND HAVE_NUMPY)
# This numpy installation bug found by Geoff.
option(EXCLUDE_PYTHON_LIBRARIES "Linux temporary workaround for numpy installation bug for non-system Python install prefix" OFF)
if(EXCLUDE_PYTHON_LIBRARIES)
set(PYTHON_LIBRARIES)
endif(EXCLUDE_PYTHON_LIBRARIES)
endif(ENABLE_python AND HAVE_NUMPY)
if(ENABLE_python)
# N.B. This is a nice way to obtain all sorts of python information
# using distutils.
execute_process(
COMMAND
${PYTHON_EXECUTABLE} -c "from distutils import sysconfig; print sysconfig.get_python_lib(1,0,prefix='${CMAKE_INSTALL_EXEC_PREFIX}')"
OUTPUT_VARIABLE PYTHON_INSTDIR
OUTPUT_STRIP_TRAILING_WHITESPACE
)
endif(ENABLE_python)
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