pybind11/tests/test_embed/CMakeLists.txt

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CMake
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if("${PYTHON_MODULE_EXTENSION}" MATCHES "pypy" OR "${Python_INTERPRETER_ID}" STREQUAL "PyPy")
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add_custom_target(cpptest) # Dummy target on PyPy. Embedding is not supported.
set(_suppress_unused_variable_warning "${DOWNLOAD_CATCH}")
return()
endif()
find_package(Catch 2.13.2)
if(CATCH_FOUND)
message(STATUS "Building interpreter tests using Catch v${CATCH_VERSION}")
else()
message(STATUS "Catch not detected. Interpreter tests will be skipped. Install Catch headers"
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" manually or use `cmake -DDOWNLOAD_CATCH=ON` to fetch them automatically.")
return()
endif()
find_package(Threads REQUIRED)
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add_executable(test_embed catch.cpp test_interpreter.cpp)
pybind11_enable_warnings(test_embed)
target_link_libraries(test_embed PRIVATE pybind11::embed Catch2::Catch2 Threads::Threads)
if(NOT CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_CURRENT_BINARY_DIR)
file(COPY test_interpreter.py DESTINATION "${CMAKE_CURRENT_BINARY_DIR}")
endif()
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add_custom_target(
cpptest
COMMAND "$<TARGET_FILE:test_embed>"
WORKING_DIRECTORY "${CMAKE_CURRENT_BINARY_DIR}")
pybind11_add_module(external_module THIN_LTO external_module.cpp)
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set_target_properties(external_module PROPERTIES LIBRARY_OUTPUT_DIRECTORY
"${CMAKE_CURRENT_BINARY_DIR}")
foreach(config ${CMAKE_CONFIGURATION_TYPES})
string(TOUPPER ${config} config)
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set_target_properties(external_module PROPERTIES LIBRARY_OUTPUT_DIRECTORY_${config}
"${CMAKE_CURRENT_BINARY_DIR}")
endforeach()
add_dependencies(cpptest external_module)
add_dependencies(check cpptest)