9021ffbb95
Python since 3.8 no longer links to the interpreter library, so symbols like `PyExc_AttributeError` will be undefined at link time. This causes build failures when shared libraries are linked with `-Wl,--no-undefined`. Use `TYPE MODULE` for python extension modules, which allows to specify distinct flags via CMAKE_MODULE_LINKER_FLAGS vs CMAKE_SHARED_LINKER_FLAGS. (The same is already used by `pybind11_add_module(... MODULE ...)`). Fixes #3258.
35 lines
1.5 KiB
CMake
35 lines
1.5 KiB
CMake
set_property(SOURCE knapsack_solver.i PROPERTY CPLUSPLUS ON)
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set_property(SOURCE knapsack_solver.i PROPERTY SWIG_MODULE_NAME pywrapknapsack_solver)
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set_property(SOURCE knapsack_solver.i PROPERTY COMPILE_DEFINITIONS
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${OR_TOOLS_COMPILE_DEFINITIONS} ABSL_MUST_USE_RESULT)
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swig_add_library(pywrapknapsack_solver
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TYPE MODULE
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LANGUAGE python
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OUTPUT_DIR ${PYTHON_PROJECT_DIR}/algorithms
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SOURCES knapsack_solver.i)
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target_include_directories(pywrapknapsack_solver PRIVATE ${Python3_INCLUDE_DIRS})
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set_property(TARGET pywrapknapsack_solver PROPERTY SWIG_USE_TARGET_INCLUDE_DIRECTORIES ON)
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target_compile_definitions(pywrapknapsack_solver PUBLIC "PY3")
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# note: macOS is APPLE and also UNIX !
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if(APPLE)
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set_target_properties(pywrapknapsack_solver PROPERTIES
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SUFFIX ".so"
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INSTALL_RPATH "@loader_path;@loader_path/../../${PROJECT_NAME}/.libs")
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set_property(TARGET pywrapknapsack_solver APPEND PROPERTY
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LINK_FLAGS "-flat_namespace -undefined suppress")
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elseif(UNIX)
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set_target_properties(pywrapknapsack_solver PROPERTIES
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INSTALL_RPATH "$ORIGIN:$ORIGIN/../../${PROJECT_NAME}/.libs")
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endif()
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target_link_libraries(pywrapknapsack_solver PRIVATE ortools::ortools)
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# Variable PYTHON_LIBRARIES can contains keyword `optimized`
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# which won't be interpreted inside a generator expression.
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# i.e. we can't use: $<$<PLATFORM_ID:Windows>:${PYTHON_LIBRARIES}>
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# see: https://cmake.org/cmake/help/git-stage/command/target_link_libraries.html#command:target_link_libraries
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if(MSVC)
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target_link_libraries(pywrapknapsack_solver PRIVATE ${Python3_LIBRARIES})
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endif()
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