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python.cmake
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python.cmake
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# Copyright (C) 2008-2014 LAAS-CNRS, JRL AIST-CNRS.
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#.rst:
# .. command:: FINDPYTHON
#
# Find python interpreter and python libs.
# Arguments are passed to the find_package command so
# refer to find_package documentation to learn about valid arguments.
#
# For instance, the command
# ``FINDPYTHON(2.7 EXACT REQUIRED)``
# will force CMake to find Python2.7
#
# .. warning::
# According to the ``FindPythonLibs`` and ``FindPythonInterp``
# documentation, you could also set ``Python_ADDITIONAL_VERSIONS``.
# If you do this, you will not have an error if you found two different versions
# or another version that the requested one.
#
#.rst:
# .. variable:: PYTHON_SITELIB
#
# Absolute path where Python files will be installed.
IF(CMAKE_VERSION VERSION_LESS "3.2")
SET(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake/python ${CMAKE_MODULE_PATH})
MESSAGE(WARNING "CMake versions older than 3.2 do not properly find Python. Custom macros are used to find it.")
ENDIF(CMAKE_VERSION VERSION_LESS "3.2")
MACRO(FINDPYTHON)
FIND_PACKAGE(PythonInterp ${ARGN})
IF (NOT ${PYTHONINTERP_FOUND} STREQUAL TRUE)
MESSAGE(FATAL_ERROR "Python executable has not been found.")
ENDIF (NOT ${PYTHONINTERP_FOUND} STREQUAL TRUE)
MESSAGE(STATUS "PythonInterp: ${PYTHON_EXECUTABLE}")
FIND_PACKAGE(PythonLibs ${ARGN})
MESSAGE(STATUS "PythonLibraries: ${PYTHON_LIBRARIES}")
IF (NOT ${PYTHONLIBS_FOUND} STREQUAL TRUE)
MESSAGE(FATAL_ERROR "Python has not been found.")
ENDIF (NOT ${PYTHONLIBS_FOUND} STREQUAL TRUE)
# Find PYTHON_LIBRARY_DIRS
GET_FILENAME_COMPONENT(PYTHON_LIBRARY_DIRS "${PYTHON_LIBRARIES}" PATH)
MESSAGE(STATUS "PythonLibraryDirs: ${PYTHON_LIBRARY_DIRS}")
MESSAGE(STATUS "PythonLibVersionString: ${PYTHONLIBS_VERSION_STRING}")
# Default Python packages directory
SET(PYTHON_PACKAGES_DIR site-packages)
# Use either site-packages (default) or dist-packages (Debian packages) directory
OPTION(PYTHON_DEB_LAYOUT "Enable Debian-style Python package layout" OFF)
IF (PYTHON_DEB_LAYOUT)
SET(PYTHON_PACKAGES_DIR dist-packages)
ENDIF (PYTHON_DEB_LAYOUT)
EXECUTE_PROCESS(
COMMAND "${PYTHON_EXECUTABLE}" "-c"
"import sys, os; print(os.sep.join(['lib', 'python' + sys.version[:3], '${PYTHON_PACKAGES_DIR}']))"
OUTPUT_VARIABLE PYTHON_SITELIB
ERROR_QUIET)
# Remove final \n of the variable PYTHON_SITELIB
STRING(REPLACE "\n" "" PYTHON_SITELIB "${PYTHON_SITELIB}")
NORMALIZE_PATH(PYTHON_SITELIB)
# Log Python variables
LIST(APPEND LOGGING_WATCHED_VARIABLES
PYTHONINTERP_FOUND
PYTHONLIBS_FOUND
PYTHON_LIBRARY_DIRS
PYTHONLIBS_VERSION_STRING
PYTHON_EXECUTABLE
)
ENDMACRO(FINDPYTHON)
#.rst:
# .. command:: DYNAMIC_GRAPH_PYTHON_MODULE ( SUBMODULENAME LIBRARYNAME TARGETNAME INSTALL_INIT_PY=1 SOURCE_PYTHON_MODULE=cmake/dynamic_graph/python-module-py.cc)
#
# Add a python submodule to dynamic_graph
#
# :param SUBMODULENAME: the name of the submodule (can be foo/bar),
#
# :param LIBRARYNAME: library to link the submodule with.
#
# :param TARGETNAME: name of the target: should be different for several
# calls to the macro.
#
# :param INSTALL_INIT_PY: if set to 1 install and generated a __init__.py file.
# Set to 1 by default.
#
# :param SOURCE_PYTHON_MODULE: Location of the cpp file for the python module in the package.
# Set to cmake/dynamic_graph/python-module-py.cc by default.
#
# .. note::
# Before calling this macro, set variable NEW_ENTITY_CLASS as
# the list of new Entity types that you want to be bound.
# Entity class name should match the name referencing the type
# in the factory.
#
MACRO(DYNAMIC_GRAPH_PYTHON_MODULE SUBMODULENAME LIBRARYNAME TARGETNAME)
# By default the __init__.py file is installed.
SET(INSTALL_INIT_PY 1)
SET(SOURCE_PYTHON_MODULE "cmake/dynamic_graph/python-module-py.cc")
# Check if there is optional parameters.
set(extra_macro_args ${ARGN})
list(LENGTH extra_macro_args num_extra_args)
if( ${num_extra_args} GREATER 0)
list(GET extra_macro_args 0 INSTALL_INIT_PY)
if( ${num_extra_args} GREATER 1)
list(GET extra_macro_args 1 SOURCE_PYTHON_MODULE)
endif(${num_extra_args} GREATER 1)
endif(${num_extra_args} GREATER 0)
IF(NOT DEFINED PYTHONLIBS_FOUND)
FINDPYTHON()
ELSEIF(NOT ${PYTHONLIBS_FOUND} STREQUAL "TRUE")
MESSAGE(FATAL_ERROR "Python has not been found.")
ENDIF()
SET(PYTHON_MODULE ${TARGETNAME})
# We need to set this policy to old to accept wrap target.
CMAKE_POLICY(PUSH)
IF(POLICY CMP0037)
CMAKE_POLICY(SET CMP0037 OLD)
ENDIF()
ADD_LIBRARY(${PYTHON_MODULE}
MODULE
${PROJECT_SOURCE_DIR}/${SOURCE_PYTHON_MODULE})
FILE(MAKE_DIRECTORY ${PROJECT_BINARY_DIR}/src/dynamic_graph/${SUBMODULENAME})
SET_TARGET_PROPERTIES(${PYTHON_MODULE}
PROPERTIES PREFIX ""
OUTPUT_NAME dynamic_graph/${SUBMODULENAME}/wrap
)
CMAKE_POLICY(POP)
TARGET_LINK_LIBRARIES(${PYTHON_MODULE} ${PUBLIC_KEYWORD} "-Wl,--no-as-needed")
TARGET_LINK_LIBRARIES(${PYTHON_MODULE} ${PUBLIC_KEYWORD} ${LIBRARYNAME} ${PYTHON_LIBRARY})
INCLUDE_DIRECTORIES(${PYTHON_INCLUDE_PATH})
#
# Installation
#
SET(PYTHON_INSTALL_DIR ${PYTHON_SITELIB}/dynamic_graph/${SUBMODULENAME})
INSTALL(TARGETS ${PYTHON_MODULE}
DESTINATION
${PYTHON_INSTALL_DIR})
SET(ENTITY_CLASS_LIST "")
FOREACH (ENTITY ${NEW_ENTITY_CLASS})
SET(ENTITY_CLASS_LIST "${ENTITY_CLASS_LIST}${ENTITY}('')\n")
ENDFOREACH(ENTITY ${NEW_ENTITY_CLASS})
# Install if INSTALL_INIT_PY is set to 1
IF (${INSTALL_INIT_PY} EQUAL 1)
CONFIGURE_FILE(
${PROJECT_SOURCE_DIR}/cmake/dynamic_graph/submodule/__init__.py.cmake
${PROJECT_BINARY_DIR}/src/dynamic_graph/${SUBMODULENAME}/__init__.py
)
INSTALL(
FILES ${PROJECT_BINARY_DIR}/src/dynamic_graph/${SUBMODULENAME}/__init__.py
DESTINATION ${PYTHON_INSTALL_DIR}
)
ENDIF(${INSTALL_INIT_PY} EQUAL 1)
ENDMACRO(DYNAMIC_GRAPH_PYTHON_MODULE SUBMODULENAME)
#.rst:
# .. command:: PYTHON_INSTALL(MODULE FILE DEST)
#
# Install a Python file and its associated compiled version.
#
MACRO(PYTHON_INSTALL MODULE FILE DEST)
PYTHON_BUILD("${MODULE}" "${FILE}")
INSTALL(FILES
"${CMAKE_CURRENT_SOURCE_DIR}/${MODULE}/${FILE}"
"${CMAKE_CURRENT_BINARY_DIR}/${MODULE}/${FILE}c"
DESTINATION "${DEST}/${MODULE}")
ENDMACRO()
#.rst:
# .. command:: PYTHON_INSTALL_ON_SITE (MODULE FILE)
#
# Install a Python file and its associated compiled version in :cmake:variable:`PYTHON_SITELIB`.
#
MACRO(PYTHON_INSTALL_ON_SITE MODULE FILE)
IF(NOT DEFINED PYTHONLIBS_FOUND)
FINDPYTHON()
ELSEIF(NOT ${PYTHONLIBS_FOUND} STREQUAL "TRUE")
MESSAGE(FATAL_ERROR "Python has not been found.")
ENDIF()
PYTHON_INSTALL("${MODULE}" "${FILE}" "${PYTHON_SITELIB}")
ENDMACRO()
# PYTHON_BUILD(MODULE FILE DEST)
# --------------------------------------
#
# Build a Python file from the source directory in the build directory.
#
MACRO(PYTHON_BUILD MODULE FILE)
FILE(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/${MODULE}")
# convert "/" to "_"
STRING(REGEX REPLACE "/" "_" FILE_TARGET_NAME
"${MODULE}/${FILE}c")
ADD_CUSTOM_TARGET(${FILE_TARGET_NAME} ALL
COMMAND
"${PYTHON_EXECUTABLE}"
"${PROJECT_SOURCE_DIR}/cmake/compile.py"
"${CMAKE_CURRENT_SOURCE_DIR}"
"${CMAKE_CURRENT_BINARY_DIR}"
"${MODULE}/${FILE}"
)
# Tag pyc file as generated.
SET_SOURCE_FILES_PROPERTIES(
"${CMAKE_CURRENT_BINARY_DIR}/${MODULE}/${FILE}c"
PROPERTIES GENERATED TRUE)
# Clean generated files.
SET_PROPERTY(
DIRECTORY APPEND PROPERTY
ADDITIONAL_MAKE_CLEAN_FILES
"${CMAKE_CURRENT_BINARY_DIR}/${MODULE}/${FILE}c"
)
ENDMACRO()
# PYTHON_INSTALL_BUILD(MODULE FILE DEST)
# --------------------------------------
#
# Install a Python file residing in the build directory and its
# associated compiled version.
#
MACRO(PYTHON_INSTALL_BUILD MODULE FILE DEST)
FILE(MAKE_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}/${MODULE}")
INSTALL(CODE
"EXECUTE_PROCESS(COMMAND
\"${PYTHON_EXECUTABLE}\"
\"${PROJECT_SOURCE_DIR}/cmake/compile.py\"
\"${CMAKE_CURRENT_BINARY_DIR}\"
\"${CMAKE_CURRENT_BINARY_DIR}\"
\"${MODULE}/${FILE}\")
")
# Tag pyc file as generated.
SET_SOURCE_FILES_PROPERTIES(
"${CMAKE_CURRENT_BINARY_DIR}/${MODULE}/${FILE}c"
PROPERTIES GENERATED TRUE)
# Clean generated files.
SET_PROPERTY(
DIRECTORY APPEND PROPERTY
ADDITIONAL_MAKE_CLEAN_FILES
"${CMAKE_CURRENT_BINARY_DIR}/${MODULE}/${FILE}c"
)
INSTALL(FILES
"${CMAKE_CURRENT_BINARY_DIR}/${MODULE}/${FILE}"
"${CMAKE_CURRENT_BINARY_DIR}/${MODULE}/${FILE}c"
DESTINATION "${DEST}/${MODULE}")
ENDMACRO()
#.rst:
# .. command:: FIND_NUMPY
#
# Detect numpy module
#
MACRO(FIND_NUMPY)
# Detect numpy.
MESSAGE (STATUS "checking for numpy")
EXECUTE_PROCESS(
COMMAND "${PYTHON_EXECUTABLE}" "-c"
"import numpy; print (numpy.get_include())"
OUTPUT_VARIABLE NUMPY_INCLUDE_DIRS
ERROR_QUIET)
IF (NOT NUMPY_INCLUDE_DIRS)
MESSAGE (FATAL_ERROR "Failed to detect numpy")
ELSE ()
STRING(REGEX REPLACE "\n$" "" NUMPY_INCLUDE_DIRS "${NUMPY_INCLUDE_DIRS}")
MESSAGE (STATUS " NUMPY_INCLUDE_DIRS=${NUMPY_INCLUDE_DIRS}")
ENDIF()
ENDMACRO()