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# SPDX-License-Identifier: GPL-2.0-or-later
# Copyright 2020 Blender Foundation. All rights reserved.
# Build the test runner. This runner takes care of running all GTests, i.e.
# the code that was built using the blender_add_test_lib() CMake macro (see
# macros.cmake).
set(SRC
blender_test.cc
)
if(WITH_BUILDINFO)
list(APPEND SRC
"$<TARGET_OBJECTS:buildinfoobj>"
)
endif()
# Test libraries need to be linked "whole archive", because they're not
# directly referenced from other code.
get_property(_test_libs GLOBAL PROPERTY BLENDER_TEST_LIBS)
if(WIN32 OR APPLE)
# Windows and macOS set target_link_options after target creation.
elseif(UNIX)
list(APPEND TEST_LIBS "-Wl,--whole-archive" ${_test_libs} "-Wl,--no-whole-archive")
else()
message(FATAL_ERROR "Unknown how to link whole-archive with your compiler ${CMAKE_CXX_COMPILER_ID}")
endif()
# This builds `bin/tests/blender_test`, but does not add it as a single test.
BLENDER_SRC_GTEST_EX(
NAME blender
SRC "${SRC}"
EXTRA_LIBS "${TEST_LIBS}"
SKIP_ADD_TEST
)
setup_platform_linker_libs(blender_test)
if(WIN32)
foreach(_lib ${_test_libs})
# Both target_link_libraries and target_link_options are required here
# target_link_libraries will add any dependent libraries, while just setting
# the wholearchive flag in target link options will not.
target_link_libraries(blender_test ${_lib})
target_link_options(blender_test PRIVATE /wholearchive:$<TARGET_FILE:${_lib}>)
endforeach()
elseif(APPLE)
# force_load for `_test_libs` ensures that all symbols definitely make it into the test binary.
# But linking against them again using `target_link_libraries` creates duplicate symbol
# errors when linker cannot deduplicate a force loaded and linked library.
# So force load test libraries separately, and link against their non-"test libraries"
# dependencies separately.
# Gather dependencies of all test libraries.
set(_test_libs_dependencies)
foreach(_lib ${_test_libs})
get_target_property(_interface_libs ${_lib} INTERFACE_LINK_LIBRARIES)
if(_interface_libs)
list(APPEND _test_libs_dependencies ${_interface_libs})
endif()
unset(_interface_libs)
endforeach()
# Force load test libraries. Ensure that they are not linked twice in case they
# are used as dependencies of other test libraries.
foreach(_lib ${_test_libs})
list(REMOVE_ITEM _test_libs_dependencies ${_lib})
add_dependencies(blender_test ${_lib})
target_link_options(blender_test PRIVATE "LINKER:-force_load,$<TARGET_FILE:${_lib}>")
endforeach()
target_link_libraries(blender_test "${_test_libs_dependencies}")
unset(_test_libs_dependencies)
endif()
unset(_test_libs)
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