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# https://cristianadam.eu/20190501/bundling-together-static-libraries-with-cmake/
function(bundle_static_library tgt_name bundled_tgt_name library_name)
list(APPEND static_libs ${tgt_name})
set(dep_libs "")
function(_recursively_collect_dependencies input_target)
set(_input_link_libraries LINK_LIBRARIES)
get_target_property(_input_type ${input_target} TYPE)
if (${_input_type} STREQUAL "INTERFACE_LIBRARY")
set(_input_link_libraries INTERFACE_LINK_LIBRARIES)
endif()
get_target_property(public_dependencies ${input_target} ${_input_link_libraries})
foreach(dependency IN LISTS public_dependencies)
if(TARGET ${dependency})
get_target_property(alias ${dependency} ALIASED_TARGET)
if (TARGET ${alias})
set(dependency ${alias})
endif()
get_target_property(_type ${dependency} TYPE)
if (${_type} STREQUAL "STATIC_LIBRARY")
list(APPEND static_libs ${dependency})
endif()
get_property(library_already_added
GLOBAL PROPERTY _${tgt_name}_static_bundle_${dependency})
if (NOT library_already_added)
set_property(GLOBAL PROPERTY _${tgt_name}_static_bundle_${dependency} ON)
_recursively_collect_dependencies(${dependency})
endif()
elseif(dependency)
list(APPEND dep_libs ${dependency})
endif()
endforeach()
set(static_libs ${static_libs} PARENT_SCOPE)
set(dep_libs ${dep_libs} PARENT_SCOPE)
endfunction()
_recursively_collect_dependencies(${tgt_name})
list(REMOVE_DUPLICATES static_libs)
list(REMOVE_DUPLICATES dep_libs)
foreach(tgt IN LISTS static_libs)
list(APPEND static_libs_objects $<TARGET_OBJECTS:${tgt}>)
endforeach()
add_library(${bundled_tgt_name} STATIC ${static_libs_objects})
set_target_properties(${bundled_tgt_name} PROPERTIES
INTERFACE_INCLUDE_DIRECTORIES $<TARGET_PROPERTY:${tgt_name},INTERFACE_INCLUDE_DIRECTORIES>
INTERFACE_LINK_LIBRARIES "${dep_libs}"
OUTPUT_NAME "${library_name}"
SYMLINK_NAME "${library_name}.o"
)
add_custom_command(TARGET ${bundled_tgt_name} POST_BUILD
COMMAND ${CMAKE_COMMAND} -E create_symlink "$<TARGET_FILE_NAME:${bundled_tgt_name}>" "$<TARGET_FILE_DIR:${bundled_tgt_name}>/$<TARGET_PROPERTY:${bundled_tgt_name},SYMLINK_NAME>"
)
endfunction()
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