1 # Copyright (c) 2015, Intel Corporation 2 # All rights reserved. 3 # 4 # Redistribution and use in source and binary forms, with or without modification, 5 # are permitted provided that the following conditions are met: 6 # 7 # 1. Redistributions of source code must retain the above copyright notice, this 8 # list of conditions and the following disclaimer. 9 # 10 # 2. Redistributions in binary form must reproduce the above copyright notice, 11 # this list of conditions and the following disclaimer in the documentation and/or 12 # other materials provided with the distribution. 13 # 14 # 3. Neither the name of the copyright holder nor the names of its contributors 15 # may be used to endorse or promote products derived from this software without 16 # specific prior written permission. 17 # 18 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 19 # ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 20 # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 21 # DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR 22 # ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 23 # (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 24 # LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 25 # ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 26 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 27 # SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 29 find_package(SWIG) 30 # Hide these variables from CMake GUIs and `cmake -L` 31 set_property(CACHE 32 SWIG_DIR SWIG_EXECUTABLE SWIG_VERSION 33 PROPERTY ADVANCED TRUE) 34 if(NOT SWIG_FOUND) 35 message(FATAL_ERROR 36 "Swig is needed to compile the Python bindings but was not found." 37 "Please either install swig2.0 or disable Python bindings by setting" 38 "PYTHON_BINDINGS to OFF (e.g. '-DPYTHON_BINDINGS=OFF' in the" 39 "invocation of CMake.). See the 'Compilation' section of README.md" 40 "for more details.") 41 endif() 42 43 include(${SWIG_USE_FILE}) 44 45 # Force usage of Python 2.7.x ... 46 find_package(PythonInterp 2.7 REQUIRED) 47 48 # ... and force the libs to be at the same version as the interpreter 49 find_package(PythonLibs ${PYTHON_VERSION_STRING} EXACT REQUIRED) 50 include_directories(${PYTHON_INCLUDE_DIRS}) 51 52 set_property(SOURCE pfw.i PROPERTY CPLUSPLUS ON) 53 set_property(SOURCE pfw.i PROPERTY SWIG_FLAGS "-Wall") 54 if(FATAL_WARNINGS) 55 set_property(SOURCE pfw.i APPEND PROPERTY SWIG_FLAGS "-Werror") 56 endif() 57 58 swig_add_module(PyPfw python pfw.i) 59 swig_link_libraries(PyPfw parameter ${PYTHON_LIBRARIES}) 60 # For convenience, the global library output directory 61 # (CMAKE_LIBRARY_OUTPUT_DIRECTORY) is set to ${PROJECT_BINARY_DIR}/lib, so that 62 # all libs are generated in the same folder. This help writing test targets 63 # (add_test) that do not need "make install" to be run. 64 # However, putting _PyPfw.so in that folder defeats the purpose described 65 # above because when running tests using the python bindings, the PYTHONPATH 66 # needs to contain both _PyPfw.so and PyPfw.py. Without the line below, 67 # _PyPfw.so would be put in ${PROJECT_BINARY_DIR}/lib while PyPfw.py is put in 68 # ${CMAKE_CURRENT_BINARY_DIR}. 69 set_property(TARGET _PyPfw PROPERTY LIBRARY_OUTPUT_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}) 70 71 # '-DSWIG_PYTHON_SILENT_MEMLEAK' is needed because the "memleak" warning 72 # pollutes the standard output. At the time of writing, the only warning is 73 # spurious anyway, as it relates to "ILogger *" which is an abstract 74 # class/interface class and as such cannot be destroyed. 75 # -Wno-error is set to prevent compilation failure in case of the code 76 # generated by swig generates warnings. We don't apply the FATAL_WARNING policy 77 # here, since we consider this generated code as external. 78 target_compile_definitions(_PyPfw PRIVATE SWIG_PYTHON_SILENT_MEMLEAK) 79 target_compile_options(_PyPfw PRIVATE -Wno-error) 80 81 82 # Find the python modules install path. 83 # plat_specific is needed because we are installing a shared-library python 84 # module and not only a pure python module. 85 # prefix='' makes get_python_lib return a relative path. 86 execute_process(COMMAND 87 ${PYTHON_EXECUTABLE} -c 88 "from distutils import sysconfig;\\ 89 print(sysconfig.get_python_lib(plat_specific=True, prefix=''))" 90 OUTPUT_VARIABLE PYTHON_MODULE_PATH OUTPUT_STRIP_TRAILING_WHITESPACE) 91 92 install(TARGETS _PyPfw LIBRARY DESTINATION ${PYTHON_MODULE_PATH} COMPONENT python) 93 94 # install the generated Python file as well 95 install(FILES ${CMAKE_CURRENT_BINARY_DIR}/PyPfw.py DESTINATION ${PYTHON_MODULE_PATH} 96 COMPONENT python) 97
