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if(NOT WITH_PYTHON3)
return()
endif()
message("Building bindings for python3")
find_package(Python3 REQUIRED COMPONENTS Interpreter Development)
include_directories(${Python3_INCLUDE_DIRS})
function(add_python3_module LIBRARY_NAME MODULE_NAME)
set(TARGET_NAME "python3_${MODULE_NAME}")
list(APPEND SWIG_COMPILE_OPTIONS
-Wno-redundant-decls
)
# Currently the SWIG_PYTHON_SILENT_MEMLEAK controls only whether message:
# "swig/python detected a memory leak of type '%s', no destructor found." is printed, used here:
# https://github.com/swig/swig/blob/33f6a2d0b2c3d90b928f56ddfa599afe87903f76/Lib/python/pyrun.swg#L776
# We want to suppress this message due to a bug in Python part of swig.
# The core of the issue is that Python Swig has a global list of types used in all swig modules. This is
# needed because the modules are interlinked eg. libdnf5::Base is used in all of them. During finalization
# of the Python runtime unused modules are cleaned up before garbage collector runs and cleans global objects.
# This can result in a situation where for example libdnf5.advisory module is destroyed, removing its types
# from the global swig types list including libdnf5.base.Base, and only after that a global libdnf5.base.Base
# is garbage collected which is now missing type information -> no destructor can be called -> swig wants to
# print the message
# There is an issue reported on SWIG with the same root cause: https://github.com/swig/swig/issues/2037 it
# also contains more details.
list(APPEND SWIG_COMPILE_OPTIONS
-DSWIG_PYTHON_SILENT_MEMLEAK
)
list(APPEND CMAKE_SWIG_FLAGS
-doxygen
)
set_source_files_properties(../../${LIBRARY_NAME}/${MODULE_NAME}.i PROPERTIES CPLUSPLUS ON)
set_source_files_properties(../../${LIBRARY_NAME}/${MODULE_NAME}.i PROPERTIES SWIG_FLAGS "-relativeimport")
swig_add_library(${TARGET_NAME} LANGUAGE python SOURCES ../../${LIBRARY_NAME}/${MODULE_NAME}.i)
set_property(TARGET ${TARGET_NAME} PROPERTY OUTPUT_NAME ${MODULE_NAME})
target_compile_options(${TARGET_NAME} PUBLIC ${SWIG_COMPILE_OPTIONS})
string(REPLACE "_" "-" C_LIBRARY_NAME ${LIBRARY_NAME})
target_link_libraries(${TARGET_NAME} PRIVATE ${C_LIBRARY_NAME})
target_link_libraries(${TARGET_NAME} PRIVATE ${Python3_LIBRARIES})
# generate a dist-info for the library (redundantly created for multi-module packages, oh well...)
set(DISTINFO_PATH "${CMAKE_CURRENT_BINARY_DIR}/${LIBRARY_NAME}-${CMAKE_PROJECT_VERSION}.dist-info")
set(METADATA_FILE "${DISTINFO_PATH}/METADATA")
file(MAKE_DIRECTORY ${DISTINFO_PATH})
file(WRITE ${METADATA_FILE} "Metadata-Version: 2.1\n")
file(APPEND ${METADATA_FILE} "Name: ${LIBRARY_NAME}\n")
file(APPEND ${METADATA_FILE} "Version: ${CMAKE_PROJECT_VERSION}\n")
install(TARGETS ${TARGET_NAME} LIBRARY DESTINATION ${Python3_SITEARCH}/${LIBRARY_NAME})
install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${MODULE_NAME}.py DESTINATION ${Python3_SITEARCH}/${LIBRARY_NAME})
install(DIRECTORY ${DISTINFO_PATH} DESTINATION ${Python3_SITEARCH})
endfunction()
add_subdirectory(libdnf5)
add_subdirectory(libdnf5_cli)
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