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# CMakeLists.txt -- Build system for the pybind11 test suite
#
# 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)
option(PYBIND11_WERROR "Report all warnings as errors" OFF)
if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
# We're being loaded directly, i.e. not via add_subdirectory, so make this
# work as its own project and load the pybind11Config to get the tools we need
project(pybind11_tests CXX)
find_package(pybind11 REQUIRED CONFIG)
endif()
if(NOT CMAKE_BUILD_TYPE AND NOT CMAKE_CONFIGURATION_TYPES)
message(STATUS "Setting tests build type to MinSizeRel as none was specified")
set(CMAKE_BUILD_TYPE MinSizeRel CACHE STRING "Choose the type of build." FORCE)
set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS "Debug" "Release"
"MinSizeRel" "RelWithDebInfo")
endif()
# Full set of test files (you can override these; see below)
set(PYBIND11_TEST_FILES
test_async.cpp
test_buffers.cpp
test_builtin_casters.cpp
test_call_policies.cpp
test_callbacks.cpp
test_chrono.cpp
test_class.cpp
test_constants_and_functions.cpp
test_copy_move.cpp
test_docstring_options.cpp
test_eigen.cpp
test_enum.cpp
test_eval.cpp
test_exceptions.cpp
test_factory_constructors.cpp
test_gil_scoped.cpp
test_iostream.cpp
test_kwargs_and_defaults.cpp
test_local_bindings.cpp
test_methods_and_attributes.cpp
test_modules.cpp
test_multiple_inheritance.cpp
test_numpy_array.cpp
test_numpy_dtypes.cpp
test_numpy_vectorize.cpp
test_opaque_types.cpp
test_operator_overloading.cpp
test_pickling.cpp
test_pytypes.cpp
test_sequences_and_iterators.cpp
test_smart_ptr.cpp
test_stl.cpp
test_stl_binders.cpp
test_tagbased_polymorphic.cpp
test_union.cpp
test_virtual_functions.cpp
)
# Invoking cmake with something like:
# cmake -DPYBIND11_TEST_OVERRIDE="test_callbacks.cpp;test_picking.cpp" ..
# lets you override the tests that get compiled and run. You can restore to all tests with:
# cmake -DPYBIND11_TEST_OVERRIDE= ..
if (PYBIND11_TEST_OVERRIDE)
set(PYBIND11_TEST_FILES ${PYBIND11_TEST_OVERRIDE})
endif()
# Skip test_async for Python < 3.5
list(FIND PYBIND11_TEST_FILES test_async.cpp PYBIND11_TEST_FILES_ASYNC_I)
if((PYBIND11_TEST_FILES_ASYNC_I GREATER -1) AND ("${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR}" VERSION_LESS 3.5))
message(STATUS "Skipping test_async because Python version ${PYTHON_VERSION_MAJOR}.${PYTHON_VERSION_MINOR} < 3.5")
list(REMOVE_AT PYBIND11_TEST_FILES ${PYBIND11_TEST_FILES_ASYNC_I})
endif()
string(REPLACE ".cpp" ".py" PYBIND11_PYTEST_FILES "${PYBIND11_TEST_FILES}")
# Contains the set of test files that require pybind11_cross_module_tests to be
# built; if none of these are built (i.e. because TEST_OVERRIDE is used and
# doesn't include them) the second module doesn't get built.
set(PYBIND11_CROSS_MODULE_TESTS
test_exceptions.py
test_local_bindings.py
test_stl.py
test_stl_binders.py
)
set(PYBIND11_CROSS_MODULE_GIL_TESTS
test_gil_scoped.py
)
# Check if Eigen is available; if not, remove from PYBIND11_TEST_FILES (but
# keep it in PYBIND11_PYTEST_FILES, so that we get the "eigen is not installed"
# skip message).
list(FIND PYBIND11_TEST_FILES test_eigen.cpp PYBIND11_TEST_FILES_EIGEN_I)
if(PYBIND11_TEST_FILES_EIGEN_I GREATER -1)
# Try loading via newer Eigen's Eigen3Config first (bypassing tools/FindEigen3.cmake).
# Eigen 3.3.1+ exports a cmake 3.0+ target for handling dependency requirements, but also
# produces a fatal error if loaded from a pre-3.0 cmake.
if (NOT CMAKE_VERSION VERSION_LESS 3.0)
find_package(Eigen3 3.2.7 QUIET CONFIG)
if (EIGEN3_FOUND)
if (EIGEN3_VERSION_STRING AND NOT EIGEN3_VERSION_STRING VERSION_LESS 3.3.1)
set(PYBIND11_EIGEN_VIA_TARGET 1)
endif()
endif()
endif()
if (NOT EIGEN3_FOUND)
# Couldn't load via target, so fall back to allowing module mode finding, which will pick up
# tools/FindEigen3.cmake
find_package(Eigen3 3.2.7 QUIET)
endif()
if(EIGEN3_FOUND)
# Eigen 3.3.1+ cmake sets EIGEN3_VERSION_STRING (and hard codes the version when installed
# rather than looking it up in the cmake script); older versions, and the
# tools/FindEigen3.cmake, set EIGEN3_VERSION instead.
if(NOT EIGEN3_VERSION AND EIGEN3_VERSION_STRING)
set(EIGEN3_VERSION ${EIGEN3_VERSION_STRING})
endif()
message(STATUS "Building tests with Eigen v${EIGEN3_VERSION}")
else()
list(REMOVE_AT PYBIND11_TEST_FILES ${PYBIND11_TEST_FILES_EIGEN_I})
message(STATUS "Building tests WITHOUT Eigen")
endif()
endif()
# Optional dependency for some tests (boost::variant is only supported with version >= 1.56)
find_package(Boost 1.56)
# Compile with compiler warnings turned on
function(pybind11_enable_warnings target_name)
if(MSVC)
target_compile_options(${target_name} PRIVATE /W4)
elseif(CMAKE_CXX_COMPILER_ID MATCHES "(GNU|Intel|Clang)")
target_compile_options(${target_name} PRIVATE -Wall -Wextra -Wconversion -Wcast-qual -Wdeprecated)
endif()
if(PYBIND11_WERROR)
if(MSVC)
target_compile_options(${target_name} PRIVATE /WX)
elseif(CMAKE_CXX_COMPILER_ID MATCHES "(GNU|Intel|Clang)")
target_compile_options(${target_name} PRIVATE -Werror)
endif()
endif()
endfunction()
set(test_targets pybind11_tests)
# Build pybind11_cross_module_tests if any test_whatever.py are being built that require it
foreach(t ${PYBIND11_CROSS_MODULE_TESTS})
list(FIND PYBIND11_PYTEST_FILES ${t} i)
if (i GREATER -1)
list(APPEND test_targets pybind11_cross_module_tests)
break()
endif()
endforeach()
foreach(t ${PYBIND11_CROSS_MODULE_GIL_TESTS})
list(FIND PYBIND11_PYTEST_FILES ${t} i)
if (i GREATER -1)
list(APPEND test_targets cross_module_gil_utils)
break()
endif()
endforeach()
set(testdir ${CMAKE_CURRENT_SOURCE_DIR})
foreach(target ${test_targets})
set(test_files ${PYBIND11_TEST_FILES})
if(NOT target STREQUAL "pybind11_tests")
set(test_files "")
endif()
# Create the binding library
pybind11_add_module(${target} THIN_LTO ${target}.cpp ${test_files} ${PYBIND11_HEADERS})
pybind11_enable_warnings(${target})
if(MSVC)
target_compile_options(${target} PRIVATE /utf-8)
endif()
if(EIGEN3_FOUND)
if (PYBIND11_EIGEN_VIA_TARGET)
target_link_libraries(${target} PRIVATE Eigen3::Eigen)
else()
target_include_directories(${target} PRIVATE ${EIGEN3_INCLUDE_DIR})
endif()
target_compile_definitions(${target} PRIVATE -DPYBIND11_TEST_EIGEN)
endif()
if(Boost_FOUND)
target_include_directories(${target} PRIVATE ${Boost_INCLUDE_DIRS})
target_compile_definitions(${target} PRIVATE -DPYBIND11_TEST_BOOST)
endif()
# Always write the output file directly into the 'tests' directory (even on MSVC)
if(NOT CMAKE_LIBRARY_OUTPUT_DIRECTORY)
set_target_properties(${target} PROPERTIES LIBRARY_OUTPUT_DIRECTORY ${testdir})
foreach(config ${CMAKE_CONFIGURATION_TYPES})
string(TOUPPER ${config} config)
set_target_properties(${target} PROPERTIES LIBRARY_OUTPUT_DIRECTORY_${config} ${testdir})
endforeach()
endif()
endforeach()
# Make sure pytest is found or produce a fatal error
if(NOT PYBIND11_PYTEST_FOUND)
execute_process(COMMAND ${PYTHON_EXECUTABLE} -c "import pytest; print(pytest.__version__)"
RESULT_VARIABLE pytest_not_found OUTPUT_VARIABLE pytest_version ERROR_QUIET)
if(pytest_not_found)
message(FATAL_ERROR "Running the tests requires pytest. Please install it manually"
" (try: ${PYTHON_EXECUTABLE} -m pip install pytest)")
elseif(pytest_version VERSION_LESS 3.0)
message(FATAL_ERROR "Running the tests requires pytest >= 3.0. Found: ${pytest_version}"
"Please update it (try: ${PYTHON_EXECUTABLE} -m pip install -U pytest)")
endif()
set(PYBIND11_PYTEST_FOUND TRUE CACHE INTERNAL "")
endif()
if(CMAKE_VERSION VERSION_LESS 3.2)
set(PYBIND11_USES_TERMINAL "")
else()
set(PYBIND11_USES_TERMINAL "USES_TERMINAL")
endif()
# A single command to compile and run the tests
add_custom_target(pytest COMMAND ${PYTHON_EXECUTABLE} -m pytest ${PYBIND11_PYTEST_FILES}
DEPENDS ${test_targets} WORKING_DIRECTORY ${testdir} ${PYBIND11_USES_TERMINAL})
if(PYBIND11_TEST_OVERRIDE)
add_custom_command(TARGET pytest POST_BUILD
COMMAND ${CMAKE_COMMAND} -E echo "Note: not all tests run: -DPYBIND11_TEST_OVERRIDE is in effect")
endif()
# Add a check target to run all the tests, starting with pytest (we add dependencies to this below)
add_custom_target(check DEPENDS pytest)
# The remaining tests only apply when being built as part of the pybind11 project, but not if the
# tests are being built independently.
if (NOT PROJECT_NAME STREQUAL "pybind11")
return()
endif()
# Add a post-build comment to show the primary test suite .so size and, if a previous size, compare it:
add_custom_command(TARGET pybind11_tests POST_BUILD
COMMAND ${PYTHON_EXECUTABLE} ${PROJECT_SOURCE_DIR}/tools/libsize.py
$<TARGET_FILE:pybind11_tests> ${CMAKE_CURRENT_BINARY_DIR}/sosize-$<TARGET_FILE_NAME:pybind11_tests>.txt)
# Test embedding the interpreter. Provides the `cpptest` target.
add_subdirectory(test_embed)
# Test CMake build using functions and targets from subdirectory or installed location
add_subdirectory(test_cmake_build)