Wenzel Jakob | 38bd711 | 2015-07-05 20:05:44 +0200 | [diff] [blame] | 1 | # CMakeLists.txt -- Build system for the pybind11 examples |
| 2 | # |
| 3 | # Copyright (c) 2015 Wenzel Jakob <wenzel@inf.ethz.ch> |
| 4 | # |
| 5 | # All rights reserved. Use of this source code is governed by a |
| 6 | # BSD-style license that can be found in the LICENSE file. |
| 7 | |
| 8 | cmake_minimum_required(VERSION 2.8) |
| 9 | |
Wenzel Jakob | 8f4eb00 | 2015-10-15 18:13:33 +0200 | [diff] [blame] | 10 | project(pybind11) |
Wenzel Jakob | 38bd711 | 2015-07-05 20:05:44 +0200 | [diff] [blame] | 11 | |
Wenzel Jakob | 3350b5e | 2015-11-24 21:33:18 +0100 | [diff] [blame] | 12 | option(PYBIND11_INSTALL "Install pybind11 header files?" ON) |
| 13 | |
Wenzel Jakob | bcd3182 | 2015-10-12 23:57:20 +0200 | [diff] [blame] | 14 | # Add a CMake parameter for choosing a desired Python version |
Wenzel Jakob | b1b7140 | 2015-10-18 16:48:30 +0200 | [diff] [blame] | 15 | set(PYBIND11_PYTHON_VERSION "" CACHE STRING "Python version to use for compiling the example application") |
Wenzel Jakob | bcd3182 | 2015-10-12 23:57:20 +0200 | [diff] [blame] | 16 | |
Wenzel Jakob | caa9d44 | 2016-01-17 22:36:34 +0100 | [diff] [blame] | 17 | include(CheckCXXCompilerFlag) |
| 18 | |
Wenzel Jakob | bcd3182 | 2015-10-12 23:57:20 +0200 | [diff] [blame] | 19 | # Set a default build configuration if none is specified. 'MinSizeRel' produces the smallest binaries |
Wenzel Jakob | 38bd711 | 2015-07-05 20:05:44 +0200 | [diff] [blame] | 20 | if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES) |
| 21 | message(STATUS "Setting build type to 'MinSizeRel' as none was specified.") |
| 22 | set(CMAKE_BUILD_TYPE MinSizeRel CACHE STRING "Choose the type of build." FORCE) |
| 23 | set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release" |
| 24 | "MinSizeRel" "RelWithDebInfo") |
| 25 | endif() |
Wenzel Jakob | bcd3182 | 2015-10-12 23:57:20 +0200 | [diff] [blame] | 26 | string(TOUPPER "${CMAKE_BUILD_TYPE}" U_CMAKE_BUILD_TYPE) |
Wenzel Jakob | 3b806d4 | 2015-10-11 16:29:35 +0200 | [diff] [blame] | 27 | |
Wenzel Jakob | caa9d44 | 2016-01-17 22:36:34 +0100 | [diff] [blame] | 28 | set(Python_ADDITIONAL_VERSIONS 3.4 3.5 3.6 3.7) |
| 29 | if (NOT ${PYBIND11_PYTHON_VERSION} STREQUAL "") |
| 30 | find_package(PythonLibs ${PYBIND11_PYTHON_VERSION} EXACT) |
Wenzel Jakob | 9ac5bc5 | 2016-05-05 16:27:06 +0200 | [diff] [blame] | 31 | if (NOT PYTHONLIBS_FOUND) |
Wenzel Jakob | caa9d44 | 2016-01-17 22:36:34 +0100 | [diff] [blame] | 32 | find_package(PythonLibs ${PYBIND11_PYTHON_VERSION} REQUIRED) |
| 33 | endif() |
| 34 | else() |
| 35 | find_package(PythonLibs REQUIRED) |
| 36 | endif() |
Wenzel Jakob | c91551b | 2016-02-07 15:45:56 +0100 | [diff] [blame] | 37 | # The above sometimes returns version numbers like "3.4.3+"; the "+" must be removed for the next line to work |
| 38 | string(REPLACE "+" "" PYTHONLIBS_VERSION_STRING "+${PYTHONLIBS_VERSION_STRING}") |
Wenzel Jakob | caa9d44 | 2016-01-17 22:36:34 +0100 | [diff] [blame] | 39 | find_package(PythonInterp ${PYTHONLIBS_VERSION_STRING} EXACT REQUIRED) |
Wenzel Jakob | faaee1c | 2015-11-30 10:17:01 +0100 | [diff] [blame] | 40 | |
Ben Pritchard | 70ee47d | 2016-02-18 13:06:43 -0500 | [diff] [blame] | 41 | if (CMAKE_CXX_COMPILER_ID MATCHES "Clang" OR CMAKE_CXX_COMPILER_ID MATCHES "GNU" OR CMAKE_CXX_COMPILER_ID MATCHES "Intel") |
Wenzel Jakob | 66c9a40 | 2016-01-17 22:36:36 +0100 | [diff] [blame] | 42 | CHECK_CXX_COMPILER_FLAG("-std=c++14" HAS_CPP14_FLAG) |
| 43 | CHECK_CXX_COMPILER_FLAG("-std=c++11" HAS_CPP11_FLAG) |
| 44 | |
| 45 | if (HAS_CPP14_FLAG) |
| 46 | set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14") |
| 47 | elseif (HAS_CPP11_FLAG) |
| 48 | set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11") |
| 49 | else() |
| 50 | message(FATAL_ERROR "Unsupported compiler -- pybind11 requires C++11 support!") |
| 51 | endif() |
Wenzel Jakob | bcd3182 | 2015-10-12 23:57:20 +0200 | [diff] [blame] | 52 | |
| 53 | # Enable link time optimization and set the default symbol |
| 54 | # visibility to hidden (very important to obtain small binaries) |
Wenzel Jakob | 38bd711 | 2015-07-05 20:05:44 +0200 | [diff] [blame] | 55 | if (NOT ${U_CMAKE_BUILD_TYPE} MATCHES DEBUG) |
Wenzel Jakob | faaee1c | 2015-11-30 10:17:01 +0100 | [diff] [blame] | 56 | # Default symbol visibility |
| 57 | set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fvisibility=hidden") |
| 58 | |
| 59 | # Check for Link Time Optimization support |
Ben Pritchard | 70ee47d | 2016-02-18 13:06:43 -0500 | [diff] [blame] | 60 | # (GCC/Clang) |
Wenzel Jakob | faaee1c | 2015-11-30 10:17:01 +0100 | [diff] [blame] | 61 | CHECK_CXX_COMPILER_FLAG("-flto" HAS_LTO_FLAG) |
| 62 | if (HAS_LTO_FLAG) |
| 63 | set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -flto") |
| 64 | endif() |
Ben Pritchard | 70ee47d | 2016-02-18 13:06:43 -0500 | [diff] [blame] | 65 | |
| 66 | # Intel equivalent to LTO is called IPO |
Wenzel Jakob | e2bb4eb | 2016-02-19 13:27:20 +0100 | [diff] [blame] | 67 | if (CMAKE_CXX_COMPILER_ID MATCHES "Intel") |
| 68 | CHECK_CXX_COMPILER_FLAG("-ipo" HAS_IPO_FLAG) |
| 69 | if (HAS_IPO_FLAG) |
| 70 | set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -ipo") |
| 71 | endif() |
Ben Pritchard | 70ee47d | 2016-02-18 13:06:43 -0500 | [diff] [blame] | 72 | endif() |
Wenzel Jakob | 38bd711 | 2015-07-05 20:05:44 +0200 | [diff] [blame] | 73 | endif() |
| 74 | endif() |
| 75 | |
| 76 | # Compile with compiler warnings turned on |
| 77 | if(MSVC) |
| 78 | if(CMAKE_CXX_FLAGS MATCHES "/W[0-4]") |
| 79 | string(REGEX REPLACE "/W[0-4]" "/W4" CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}") |
| 80 | else() |
| 81 | set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /W4") |
| 82 | endif() |
Wenzel Jakob | f233166 | 2015-11-28 14:24:44 +0100 | [diff] [blame] | 83 | elseif ("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang" OR "${CMAKE_CXX_COMPILER_ID}" MATCHES "GNU") |
Wenzel Jakob | 38bd711 | 2015-07-05 20:05:44 +0200 | [diff] [blame] | 84 | set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wall -Wextra") |
| 85 | endif() |
| 86 | |
Wenzel Jakob | 9e0a056 | 2016-05-05 20:33:54 +0200 | [diff] [blame^] | 87 | |
| 88 | # Check if Eigen is available |
| 89 | set(CMAKE_MODULE_PATH "${CMAKE_CURRENT_SOURCE_DIR}/tools") |
| 90 | find_package(Eigen3 QUIET) |
| 91 | |
Wenzel Jakob | bcd3182 | 2015-10-12 23:57:20 +0200 | [diff] [blame] | 92 | # Include path for pybind11 header files |
| 93 | include_directories(include) |
| 94 | |
Wenzel Jakob | e44e56f | 2016-04-30 22:59:58 +0200 | [diff] [blame] | 95 | # Include path for Python header files |
| 96 | include_directories(${PYTHON_INCLUDE_DIR}) |
| 97 | |
Luka Čehovin | 19af357 | 2015-11-24 21:20:56 +0100 | [diff] [blame] | 98 | set(PYBIND11_HEADERS |
Wenzel Jakob | 48548ea | 2016-01-17 22:36:44 +0100 | [diff] [blame] | 99 | include/pybind11/attr.h |
Wenzel Jakob | 8f4eb00 | 2015-10-15 18:13:33 +0200 | [diff] [blame] | 100 | include/pybind11/cast.h |
| 101 | include/pybind11/common.h |
Wenzel Jakob | 66c9a40 | 2016-01-17 22:36:36 +0100 | [diff] [blame] | 102 | include/pybind11/complex.h |
| 103 | include/pybind11/descr.h |
Wenzel Jakob | 9e0a056 | 2016-05-05 20:33:54 +0200 | [diff] [blame^] | 104 | include/pybind11/eigen.h |
Wenzel Jakob | 66c9a40 | 2016-01-17 22:36:36 +0100 | [diff] [blame] | 105 | include/pybind11/functional.h |
| 106 | include/pybind11/numpy.h |
Wenzel Jakob | 8f4eb00 | 2015-10-15 18:13:33 +0200 | [diff] [blame] | 107 | include/pybind11/operators.h |
| 108 | include/pybind11/pybind11.h |
| 109 | include/pybind11/pytypes.h |
Wenzel Jakob | e52cf8a | 2015-12-15 11:32:29 +0100 | [diff] [blame] | 110 | include/pybind11/stl.h |
Wenzel Jakob | 66c9a40 | 2016-01-17 22:36:36 +0100 | [diff] [blame] | 111 | include/pybind11/typeid.h |
Luka Čehovin | 19af357 | 2015-11-24 21:20:56 +0100 | [diff] [blame] | 112 | ) |
| 113 | |
Axel Huebl | 6c37f21 | 2016-01-20 09:24:25 +0100 | [diff] [blame] | 114 | set(PYBIND11_EXAMPLES |
Wenzel Jakob | 38bd711 | 2015-07-05 20:05:44 +0200 | [diff] [blame] | 115 | example/example1.cpp |
| 116 | example/example2.cpp |
| 117 | example/example3.cpp |
| 118 | example/example4.cpp |
| 119 | example/example5.cpp |
| 120 | example/example6.cpp |
| 121 | example/example7.cpp |
| 122 | example/example8.cpp |
| 123 | example/example9.cpp |
Wenzel Jakob | d4258ba | 2015-07-26 16:33:49 +0200 | [diff] [blame] | 124 | example/example10.cpp |
Wenzel Jakob | a576e6a | 2015-07-29 17:51:54 +0200 | [diff] [blame] | 125 | example/example11.cpp |
Wenzel Jakob | a2f6fde | 2015-10-01 16:46:03 +0200 | [diff] [blame] | 126 | example/example12.cpp |
Wenzel Jakob | 5f218b3 | 2016-01-17 22:36:39 +0100 | [diff] [blame] | 127 | example/example13.cpp |
Wenzel Jakob | eda978e | 2016-03-15 15:05:40 +0100 | [diff] [blame] | 128 | example/example14.cpp |
Wenzel Jakob | 1c329aa | 2016-04-13 02:37:36 +0200 | [diff] [blame] | 129 | example/example15.cpp |
Wenzel Jakob | d7efa4f | 2016-04-13 13:45:09 +0200 | [diff] [blame] | 130 | example/example16.cpp |
Wenzel Jakob | 17cdb06 | 2016-03-10 13:24:10 +0100 | [diff] [blame] | 131 | example/issues.cpp |
Wenzel Jakob | 38bd711 | 2015-07-05 20:05:44 +0200 | [diff] [blame] | 132 | ) |
Axel Huebl | 6c37f21 | 2016-01-20 09:24:25 +0100 | [diff] [blame] | 133 | |
Wenzel Jakob | 9e0a056 | 2016-05-05 20:33:54 +0200 | [diff] [blame^] | 134 | if (EIGEN3_FOUND) |
| 135 | include_directories(${EIGEN3_INCLUDE_DIR}) |
| 136 | list(APPEND PYBIND11_EXAMPLES example/eigen.cpp) |
| 137 | add_definitions(-DPYBIND11_TEST_EIGEN) |
| 138 | message(STATUS "Building Eigen testcase") |
| 139 | else() |
| 140 | message(STATUS "NOT Building Eigen testcase") |
| 141 | endif() |
| 142 | |
Axel Huebl | 6c37f21 | 2016-01-20 09:24:25 +0100 | [diff] [blame] | 143 | # Create the binding library |
| 144 | add_library(example SHARED |
| 145 | ${PYBIND11_HEADERS} |
| 146 | example/example.cpp |
| 147 | ${PYBIND11_EXAMPLES} |
| 148 | ) |
Wenzel Jakob | 38bd711 | 2015-07-05 20:05:44 +0200 | [diff] [blame] | 149 | |
Wenzel Jakob | bcd3182 | 2015-10-12 23:57:20 +0200 | [diff] [blame] | 150 | # Don't add a 'lib' prefix to the shared library |
Wenzel Jakob | 38bd711 | 2015-07-05 20:05:44 +0200 | [diff] [blame] | 151 | set_target_properties(example PROPERTIES PREFIX "") |
Wenzel Jakob | bcd3182 | 2015-10-12 23:57:20 +0200 | [diff] [blame] | 152 | |
Wenzel Jakob | 607654f | 2015-10-13 23:58:10 +0200 | [diff] [blame] | 153 | # Always write the output file directly into the 'example' directory (even on MSVC) |
| 154 | set(CompilerFlags |
| 155 | LIBRARY_OUTPUT_DIRECTORY LIBRARY_OUTPUT_DIRECTORY_RELEASE LIBRARY_OUTPUT_DIRECTORY_DEBUG |
| 156 | LIBRARY_OUTPUT_DIRECTORY_MINSIZEREL LIBRARY_OUTPUT_DIRECTORY_RELWITHDEBINFO |
| 157 | RUNTIME_OUTPUT_DIRECTORY RUNTIME_OUTPUT_DIRECTORY_RELEASE RUNTIME_OUTPUT_DIRECTORY_DEBUG |
| 158 | RUNTIME_OUTPUT_DIRECTORY_MINSIZEREL RUNTIME_OUTPUT_DIRECTORY_RELWITHDEBINFO) |
| 159 | |
| 160 | foreach(CompilerFlag ${CompilerFlags}) |
| 161 | set_target_properties(example PROPERTIES ${CompilerFlag} ${PROJECT_SOURCE_DIR}/example) |
| 162 | endforeach() |
Wenzel Jakob | 38bd711 | 2015-07-05 20:05:44 +0200 | [diff] [blame] | 163 | |
| 164 | if (WIN32) |
| 165 | if (MSVC) |
Wenzel Jakob | bdd1103 | 2016-05-01 12:56:09 +0200 | [diff] [blame] | 166 | # /MP enables multithreaded builds (relevant when there are many files), /bigobj is |
| 167 | # needed for bigger binding projects due to the limit to 64k addressable sections |
| 168 | set_property(TARGET example APPEND PROPERTY COMPILE_OPTIONS /MP /bigobj) |
| 169 | # Enforce size-based optimization and link time code generation on MSVC |
| 170 | # (~30% smaller binaries in experiments); do nothing in debug mode. |
| 171 | set_property(TARGET example APPEND PROPERTY COMPILE_OPTIONS |
| 172 | "$<$<CONFIG:Release>:/Os>" "$<$<CONFIG:Release>:/GL>" |
| 173 | "$<$<CONFIG:MinSizeRel>:/Os>" "$<$<CONFIG:MinSizeRel>:/GL>" |
| 174 | "$<$<CONFIG:RelWithDebInfo>:/Os>" "$<$<CONFIG:RelWithDebInfo>:/GL>" |
| 175 | ) |
| 176 | set_property(TARGET example APPEND_STRING PROPERTY LINK_FLAGS_RELEASE "/LTCG ") |
| 177 | set_property(TARGET example APPEND_STRING PROPERTY LINK_FLAGS_MINSIZEREL "/LTCG ") |
| 178 | set_property(TARGET example APPEND_STRING PROPERTY LINK_FLAGS_RELWITHDEBINFO "/LTCG ") |
Wenzel Jakob | 38bd711 | 2015-07-05 20:05:44 +0200 | [diff] [blame] | 179 | endif() |
| 180 | |
| 181 | # .PYD file extension on Windows |
| 182 | set_target_properties(example PROPERTIES SUFFIX ".pyd") |
| 183 | |
| 184 | # Link against the Python shared library |
| 185 | target_link_libraries(example ${PYTHON_LIBRARY}) |
| 186 | elseif (UNIX) |
| 187 | # It's quite common to have multiple copies of the same Python version |
| 188 | # installed on one's system. E.g.: one copy from the OS and another copy |
| 189 | # that's statically linked into an application like Blender or Maya. |
| 190 | # If we link our plugin library against the OS Python here and import it |
| 191 | # into Blender or Maya later on, this will cause segfaults when multiple |
Wenzel Jakob | 6eb11da | 2016-01-17 22:36:36 +0100 | [diff] [blame] | 192 | # conflicting Python instances are active at the same time (even when they |
| 193 | # are of the same version). |
Wenzel Jakob | 38bd711 | 2015-07-05 20:05:44 +0200 | [diff] [blame] | 194 | |
Wenzel Jakob | 518cf72 | 2016-01-21 19:17:58 +0100 | [diff] [blame] | 195 | # Windows is not affected by this issue since it handles DLL imports |
Wenzel Jakob | bcd3182 | 2015-10-12 23:57:20 +0200 | [diff] [blame] | 196 | # differently. The solution for Linux and Mac OS is simple: we just don't |
| 197 | # link against the Python library. The resulting shared library will have |
| 198 | # missing symbols, but that's perfectly fine -- they will be resolved at |
| 199 | # import time. |
Wenzel Jakob | 38bd711 | 2015-07-05 20:05:44 +0200 | [diff] [blame] | 200 | |
| 201 | # .SO file extension on Linux/Mac OS |
| 202 | set_target_properties(example PROPERTIES SUFFIX ".so") |
| 203 | |
Wenzel Jakob | 867ae37 | 2015-10-15 22:41:25 +0200 | [diff] [blame] | 204 | # Optimize for a small binary size |
| 205 | if (NOT ${U_CMAKE_BUILD_TYPE} MATCHES DEBUG) |
| 206 | set_target_properties(example PROPERTIES COMPILE_FLAGS "-Os") |
| 207 | endif() |
| 208 | |
Wenzel Jakob | 38bd711 | 2015-07-05 20:05:44 +0200 | [diff] [blame] | 209 | # Strip unnecessary sections of the binary on Linux/Mac OS |
| 210 | if(APPLE) |
| 211 | set_target_properties(example PROPERTIES MACOSX_RPATH ".") |
Wenzel Jakob | 48548ea | 2016-01-17 22:36:44 +0100 | [diff] [blame] | 212 | set_target_properties(example PROPERTIES LINK_FLAGS "-undefined dynamic_lookup ") |
Wenzel Jakob | 38bd711 | 2015-07-05 20:05:44 +0200 | [diff] [blame] | 213 | if (NOT ${U_CMAKE_BUILD_TYPE} MATCHES DEBUG) |
| 214 | add_custom_command(TARGET example POST_BUILD COMMAND strip -u -r ${PROJECT_SOURCE_DIR}/example/example.so) |
| 215 | endif() |
| 216 | else() |
| 217 | if (NOT ${U_CMAKE_BUILD_TYPE} MATCHES DEBUG) |
| 218 | add_custom_command(TARGET example POST_BUILD COMMAND strip ${PROJECT_SOURCE_DIR}/example/example.so) |
| 219 | endif() |
| 220 | endif() |
| 221 | endif() |
| 222 | |
| 223 | enable_testing() |
Wenzel Jakob | 80c2451 | 2016-02-20 20:53:10 +0100 | [diff] [blame] | 224 | |
Wenzel Jakob | 38bd711 | 2015-07-05 20:05:44 +0200 | [diff] [blame] | 225 | set(RUN_TEST ${PYTHON_EXECUTABLE} ${CMAKE_CURRENT_SOURCE_DIR}/example/run_test.py) |
Wenzel Jakob | 80c2451 | 2016-02-20 20:53:10 +0100 | [diff] [blame] | 226 | if (MSVC OR CMAKE_CXX_COMPILER_ID MATCHES "Intel") |
| 227 | set(RUN_TEST ${RUN_TEST} --relaxed) |
| 228 | endif() |
| 229 | |
Wenzel Jakob | 17cdb06 | 2016-03-10 13:24:10 +0100 | [diff] [blame] | 230 | foreach(VALUE ${PYBIND11_EXAMPLES}) |
| 231 | string(REGEX REPLACE "^example/(.+).cpp$" "\\1" EXAMPLE_NAME "${VALUE}") |
| 232 | add_test(NAME ${EXAMPLE_NAME} COMMAND ${RUN_TEST} ${EXAMPLE_NAME}) |
Wenzel Jakob | 38bd711 | 2015-07-05 20:05:44 +0200 | [diff] [blame] | 233 | endforeach() |
Luka Čehovin | 19af357 | 2015-11-24 21:20:56 +0100 | [diff] [blame] | 234 | |
Wenzel Jakob | 3350b5e | 2015-11-24 21:33:18 +0100 | [diff] [blame] | 235 | if (PYBIND11_INSTALL) |
Luka Čehovin | 19af357 | 2015-11-24 21:20:56 +0100 | [diff] [blame] | 236 | install(FILES ${PYBIND11_HEADERS} DESTINATION include/pybind11) |
| 237 | endif() |