mirror of
https://github.com/pybind/pybind11.git
synced 2024-11-11 08:03:55 +00:00
1bee6e7df8
Clang on linux currently fails to run cmake: $ CC=clang CXX=clang++ cmake .. ... -- Configuring done CMake Error at tools/pybind11Tools.cmake:135 (target_compile_options): Error evaluating generator expression: $<:-flto> Expression did not evaluate to a known generator expression Call Stack (most recent call first): tests/CMakeLists.txt:68 (pybind11_add_module) But investigating this led to various other -flto detection problems; this commit thus overhauls LTO flag detection: - -flto needs to be passed to the linker as well - Also compile with -fno-fat-lto-objects under GCC - Pass the equivalent flags to MSVC - Enable LTO flags for via generator expressions (for non-debug builds only), so that multi-config builds (like on Windows) still work properly. This seems reasonable, however, even on single-config builds (and simplifies the cmake code a bit). - clang's lto linker plugins don't accept '-Os', so replace it with '-O3' when doing a MINSIZEREL build - Enable trying ThinLTO by default for test suite (only affects clang) - Match Clang$ rather than ^Clang$ because, for cmake with 3.0+ policies in effect, the compiler ID will be AppleClang on macOS.
165 lines
6.0 KiB
CMake
165 lines
6.0 KiB
CMake
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
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message(STATUS "Setting tests build type to MinSizeRel as none was specified")
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set(CMAKE_BUILD_TYPE MinSizeRel CACHE STRING "Choose the type of build." FORCE)
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set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release"
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"MinSizeRel" "RelWithDebInfo")
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endif()
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# Full set of test files (you can override these; see below)
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set(PYBIND11_TEST_FILES
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test_alias_initialization.cpp
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test_buffers.cpp
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test_callbacks.cpp
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test_chrono.cpp
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test_class_args.cpp
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test_constants_and_functions.cpp
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test_copy_move_policies.cpp
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test_docstring_options.cpp
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test_eigen.cpp
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test_enum.cpp
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test_eval.cpp
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test_exceptions.cpp
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test_inheritance.cpp
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test_issues.cpp
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test_keep_alive.cpp
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test_kwargs_and_defaults.cpp
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test_methods_and_attributes.cpp
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test_modules.cpp
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test_multiple_inheritance.cpp
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test_numpy_array.cpp
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test_numpy_dtypes.cpp
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test_numpy_vectorize.cpp
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test_opaque_types.cpp
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test_operator_overloading.cpp
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test_pickling.cpp
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test_python_types.cpp
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test_sequences_and_iterators.cpp
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test_smart_ptr.cpp
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test_stl_binders.cpp
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test_virtual_functions.cpp
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)
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# Invoking cmake with something like:
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# cmake -DPYBIND11_TEST_OVERRIDE="test_issues.cpp;test_picking.cpp" ..
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# lets you override the tests that get compiled and run. You can restore to all tests with:
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# cmake -DPYBIND11_TEST_OVERRIDE= ..
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if (PYBIND11_TEST_OVERRIDE)
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set(PYBIND11_TEST_FILES ${PYBIND11_TEST_OVERRIDE})
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endif()
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string(REPLACE ".cpp" ".py" PYBIND11_PYTEST_FILES "${PYBIND11_TEST_FILES}")
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# Check if Eigen is available; if not, remove from PYBIND11_TEST_FILES (but
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# keep it in PYBIND11_PYTEST_FILES, so that we get the "eigen is not installed"
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# skip message).
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list(FIND PYBIND11_TEST_FILES test_eigen.cpp PYBIND11_TEST_FILES_EIGEN_I)
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if(PYBIND11_TEST_FILES_EIGEN_I GREATER -1)
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find_package(Eigen3 QUIET)
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if(EIGEN3_FOUND)
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message(STATUS "Building tests with Eigen v${EIGEN3_VERSION}")
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else()
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list(REMOVE_AT PYBIND11_TEST_FILES ${PYBIND11_TEST_FILES_EIGEN_I})
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message(STATUS "Building tests WITHOUT Eigen")
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endif()
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endif()
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# Create the binding library
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pybind11_add_module(pybind11_tests THIN_LTO pybind11_tests.cpp
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${PYBIND11_TEST_FILES} ${PYBIND11_HEADERS})
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pybind11_enable_warnings(pybind11_tests)
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if(EIGEN3_FOUND)
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target_include_directories(pybind11_tests PRIVATE ${EIGEN3_INCLUDE_DIR})
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target_compile_definitions(pybind11_tests PRIVATE -DPYBIND11_TEST_EIGEN)
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endif()
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set(testdir ${PROJECT_SOURCE_DIR}/tests)
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# Always write the output file directly into the 'tests' directory (even on MSVC)
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if(NOT CMAKE_LIBRARY_OUTPUT_DIRECTORY)
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set_target_properties(pybind11_tests PROPERTIES LIBRARY_OUTPUT_DIRECTORY ${testdir})
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foreach(config ${CMAKE_CONFIGURATION_TYPES})
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string(TOUPPER ${config} config)
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set_target_properties(pybind11_tests PROPERTIES LIBRARY_OUTPUT_DIRECTORY_${config} ${testdir})
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endforeach()
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endif()
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# Make sure pytest is found or produce a fatal error
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if(NOT PYBIND11_PYTEST_FOUND)
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execute_process(COMMAND ${PYTHON_EXECUTABLE} -c "import pytest" OUTPUT_QUIET ERROR_QUIET
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RESULT_VARIABLE PYBIND11_EXEC_PYTHON_ERR)
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if(PYBIND11_EXEC_PYTHON_ERR)
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message(FATAL_ERROR "Running the tests requires pytest. Please install it manually (try: ${PYTHON_EXECUTABLE} -m pip install pytest)")
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endif()
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set(PYBIND11_PYTEST_FOUND TRUE CACHE INTERNAL "")
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endif()
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# A single command to compile and run the tests
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add_custom_target(pytest COMMAND ${PYTHON_EXECUTABLE} -m pytest -rws ${PYBIND11_PYTEST_FILES}
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DEPENDS pybind11_tests WORKING_DIRECTORY ${testdir})
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if(PYBIND11_TEST_OVERRIDE)
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add_custom_command(TARGET pytest POST_BUILD
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COMMAND ${CMAKE_COMMAND} -E echo "Note: not all tests run: -DPYBIND11_TEST_OVERRIDE is in effect")
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endif()
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# And another to show the .so size and, if a previous size, compare it:
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add_custom_command(TARGET pybind11_tests POST_BUILD
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COMMAND ${PYTHON_EXECUTABLE} ${PROJECT_SOURCE_DIR}/tools/libsize.py
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$<TARGET_FILE:pybind11_tests> ${CMAKE_CURRENT_BINARY_DIR}/sosize-$<TARGET_FILE_NAME:pybind11_tests>.txt)
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# Test CMake build using functions and targets from subdirectory or installed location
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add_custom_target(test_cmake_build)
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if(NOT CMAKE_VERSION VERSION_LESS 3.1)
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# 3.0 needed for interface library for subdirectory_target/installed_target
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# 3.1 needed for cmake -E env for testing
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include(CMakeParseArguments)
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function(pybind11_add_build_test name)
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cmake_parse_arguments(ARG "INSTALL" "" "" ${ARGN})
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set(build_options "-DCMAKE_PREFIX_PATH=${PROJECT_BINARY_DIR}/mock_install"
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"-DCMAKE_CXX_COMPILER=${CMAKE_CXX_COMPILER}"
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"-DPYTHON_EXECUTABLE=${PYTHON_EXECUTABLE}"
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"-DPYBIND11_CPP_STANDARD=${PYBIND11_CPP_STANDARD}")
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if(NOT ARG_INSTALL)
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list(APPEND build_options "-DPYBIND11_PROJECT_DIR=${PROJECT_SOURCE_DIR}")
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endif()
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add_custom_target(test_${name} ${CMAKE_CTEST_COMMAND}
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--quiet --output-log test_cmake_build/${name}.log
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--build-and-test "${CMAKE_CURRENT_SOURCE_DIR}/test_cmake_build/${name}"
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"${CMAKE_CURRENT_BINARY_DIR}/test_cmake_build/${name}"
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--build-config Release
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--build-noclean
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--build-generator ${CMAKE_GENERATOR}
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$<$<BOOL:${CMAKE_GENERATOR_PLATFORM}>:--build-generator-platform> ${CMAKE_GENERATOR_PLATFORM}
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--build-makeprogram ${CMAKE_MAKE_PROGRAM}
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--build-target check
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--build-options ${build_options}
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)
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if(ARG_INSTALL)
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add_dependencies(test_${name} mock_install)
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endif()
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add_dependencies(test_cmake_build test_${name})
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endfunction()
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pybind11_add_build_test(subdirectory_function)
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pybind11_add_build_test(subdirectory_target)
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if(PYBIND11_INSTALL)
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add_custom_target(mock_install ${CMAKE_COMMAND}
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"-DCMAKE_INSTALL_PREFIX=${PROJECT_BINARY_DIR}/mock_install"
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-P "${PROJECT_BINARY_DIR}/cmake_install.cmake"
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)
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pybind11_add_build_test(installed_function INSTALL)
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pybind11_add_build_test(installed_target INSTALL)
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endif()
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endif()
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# Run all the tests
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add_custom_target(check DEPENDS pytest test_cmake_build)
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