| # CMakeLists.txt -- Build system for the pybind11 modules |
| # |
| # Copyright (c) 2015 Wenzel Jakob <wenzel@inf.ethz.ch> |
| # |
| # All rights reserved. Use of this source code is governed by a |
| # BSD-style license that can be found in the LICENSE file. |
| |
| cmake_minimum_required(VERSION 2.8.12) |
| |
| project(pybind11) |
| |
| # Check if pybind11 is being used directly or via add_subdirectory |
| set(PYBIND11_MASTER_PROJECT OFF) |
| if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR) |
| set(PYBIND11_MASTER_PROJECT ON) |
| endif() |
| |
| option(PYBIND11_INSTALL "Install pybind11 header files?" ${PYBIND11_MASTER_PROJECT}) |
| option(PYBIND11_TEST "Build pybind11 test suite?" ${PYBIND11_MASTER_PROJECT}) |
| option(PYBIND11_WERROR "Report all warnings as errors" OFF) |
| |
| # Add a CMake parameter for choosing a desired Python version |
| set(PYBIND11_PYTHON_VERSION "" CACHE STRING "Python version to use for compiling modules") |
| |
| list(APPEND CMAKE_MODULE_PATH "${CMAKE_CURRENT_LIST_DIR}/tools") |
| set(Python_ADDITIONAL_VERSIONS 3.4 3.5 3.6 3.7) |
| find_package(PythonLibsNew ${PYBIND11_PYTHON_VERSION} REQUIRED) |
| |
| include(CheckCXXCompilerFlag) |
| |
| if(NOT MSVC AND NOT PYBIND11_CPP_STANDARD) |
| check_cxx_compiler_flag("-std=c++14" HAS_CPP14_FLAG) |
| check_cxx_compiler_flag("-std=c++11" HAS_CPP11_FLAG) |
| |
| if (HAS_CPP14_FLAG) |
| set(PYBIND11_CPP_STANDARD -std=c++14) |
| elseif (HAS_CPP11_FLAG) |
| set(PYBIND11_CPP_STANDARD -std=c++11) |
| else() |
| message(FATAL_ERROR "Unsupported compiler -- pybind11 requires C++11 support!") |
| endif() |
| |
| set(PYBIND11_CPP_STANDARD ${PYBIND11_CPP_STANDARD} CACHE STRING |
| "C++ standard flag, e.g. -std=c++11 or -std=c++14. Defaults to latest available." FORCE) |
| endif() |
| |
| # Cache variables so pybind11_add_module can be used in parent projects |
| set(PYBIND11_INCLUDE_DIR "${CMAKE_CURRENT_LIST_DIR}/include" CACHE INTERNAL "") |
| set(PYTHON_INCLUDE_DIRS ${PYTHON_INCLUDE_DIRS} CACHE INTERNAL "") |
| set(PYTHON_LIBRARIES ${PYTHON_LIBRARIES} CACHE INTERNAL "") |
| set(PYTHON_MODULE_PREFIX ${PYTHON_MODULE_PREFIX} CACHE INTERNAL "") |
| set(PYTHON_MODULE_EXTENSION ${PYTHON_MODULE_EXTENSION} CACHE INTERNAL "") |
| |
| # Build a Python extension module: |
| # pybind11_add_module(<name> source1 [source2 ...]) |
| # |
| function(pybind11_add_module target_name) |
| add_library(${target_name} MODULE ${ARGN}) |
| target_include_directories(${target_name} |
| PRIVATE ${PYBIND11_INCLUDE_DIR} |
| PRIVATE ${PYTHON_INCLUDE_DIRS}) |
| |
| # The prefix and extension are provided by FindPythonLibsNew.cmake |
| set_target_properties(${target_name} PROPERTIES PREFIX "${PYTHON_MODULE_PREFIX}") |
| set_target_properties(${target_name} PROPERTIES SUFFIX "${PYTHON_MODULE_EXTENSION}") |
| |
| if(WIN32 OR CYGWIN) |
| # Link against the Python shared library on Windows |
| target_link_libraries(${target_name} PRIVATE ${PYTHON_LIBRARIES}) |
| elseif(APPLE) |
| # It's quite common to have multiple copies of the same Python version |
| # installed on one's system. E.g.: one copy from the OS and another copy |
| # that's statically linked into an application like Blender or Maya. |
| # If we link our plugin library against the OS Python here and import it |
| # into Blender or Maya later on, this will cause segfaults when multiple |
| # conflicting Python instances are active at the same time (even when they |
| # are of the same version). |
| |
| # Windows is not affected by this issue since it handles DLL imports |
| # differently. The solution for Linux and Mac OS is simple: we just don't |
| # link against the Python library. The resulting shared library will have |
| # missing symbols, but that's perfectly fine -- they will be resolved at |
| # import time. |
| |
| target_link_libraries(${target_name} PRIVATE "-undefined dynamic_lookup") |
| endif() |
| |
| if(NOT MSVC) |
| # Make sure C++11/14 are enabled |
| target_compile_options(${target_name} PUBLIC ${PYBIND11_CPP_STANDARD}) |
| |
| # Enable link time optimization and set the default symbol |
| # visibility to hidden (very important to obtain small binaries) |
| string(TOUPPER "${CMAKE_BUILD_TYPE}" U_CMAKE_BUILD_TYPE) |
| if (NOT ${U_CMAKE_BUILD_TYPE} MATCHES DEBUG) |
| # Check for Link Time Optimization support (GCC/Clang) |
| check_cxx_compiler_flag("-flto" HAS_LTO_FLAG) |
| if(HAS_LTO_FLAG AND NOT CYGWIN) |
| target_compile_options(${target_name} PRIVATE -flto) |
| endif() |
| |
| # Intel equivalent to LTO is called IPO |
| if(CMAKE_CXX_COMPILER_ID MATCHES "Intel") |
| check_cxx_compiler_flag("-ipo" HAS_IPO_FLAG) |
| if(HAS_IPO_FLAG) |
| target_compile_options(${target_name} PRIVATE -ipo) |
| endif() |
| endif() |
| |
| # Default symbol visibility |
| target_compile_options(${target_name} PRIVATE "-fvisibility=hidden") |
| |
| # Strip unnecessary sections of the binary on Linux/Mac OS |
| if(CMAKE_STRIP) |
| if(APPLE) |
| add_custom_command(TARGET ${target_name} POST_BUILD |
| COMMAND ${CMAKE_STRIP} -u -r $<TARGET_FILE:${target_name}>) |
| else() |
| add_custom_command(TARGET ${target_name} POST_BUILD |
| COMMAND ${CMAKE_STRIP} $<TARGET_FILE:${target_name}>) |
| endif() |
| endif() |
| endif() |
| elseif(MSVC) |
| # /MP enables multithreaded builds (relevant when there are many files), /bigobj is |
| # needed for bigger binding projects due to the limit to 64k addressable sections |
| target_compile_options(${target_name} PRIVATE /MP /bigobj) |
| |
| # Enforce link time code generation on MSVC, except in debug mode |
| target_compile_options(${target_name} PRIVATE $<$<NOT:$<CONFIG:Debug>>:/GL>) |
| |
| # Fancy generator expressions don't work with linker flags, for reasons unknown |
| set_property(TARGET ${target_name} APPEND_STRING PROPERTY LINK_FLAGS_RELEASE /LTCG) |
| set_property(TARGET ${target_name} APPEND_STRING PROPERTY LINK_FLAGS_MINSIZEREL /LTCG) |
| set_property(TARGET ${target_name} APPEND_STRING PROPERTY LINK_FLAGS_RELWITHDEBINFO /LTCG) |
| endif() |
| endfunction() |
| |
| # Compile with compiler warnings turned on |
| function(pybind11_enable_warnings target_name) |
| if(MSVC) |
| target_compile_options(${target_name} PRIVATE /W4) |
| else() |
| target_compile_options(${target_name} PRIVATE -Wall -Wextra -Wconversion) |
| endif() |
| |
| if(PYBIND11_WERROR) |
| if(MSVC) |
| target_compile_options(${target_name} PRIVATE /WX) |
| else() |
| target_compile_options(${target_name} PRIVATE -Werror) |
| endif() |
| endif() |
| endfunction() |
| |
| set(PYBIND11_HEADERS |
| include/pybind11/attr.h |
| include/pybind11/cast.h |
| include/pybind11/chrono.h |
| include/pybind11/common.h |
| include/pybind11/complex.h |
| include/pybind11/descr.h |
| include/pybind11/eigen.h |
| include/pybind11/eval.h |
| include/pybind11/functional.h |
| include/pybind11/numpy.h |
| include/pybind11/operators.h |
| include/pybind11/pybind11.h |
| include/pybind11/pytypes.h |
| include/pybind11/stl.h |
| include/pybind11/stl_bind.h |
| include/pybind11/typeid.h |
| ) |
| string(REPLACE "include/" "${CMAKE_CURRENT_SOURCE_DIR}/include/" |
| PYBIND11_HEADERS "${PYBIND11_HEADERS}") |
| |
| if (PYBIND11_TEST) |
| add_subdirectory(tests) |
| endif() |
| |
| if (PYBIND11_INSTALL) |
| install(FILES ${PYBIND11_HEADERS} DESTINATION include/pybind11) |
| endif() |