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latentprionandCursor
3d23ed21be
Keep linking Boost::log, and only require Boost::system on older package sets that still ship libboost_system. Co-authored-by: Cursor <cursoragent@cursor.com>
60 lines
2.1 KiB
CMake
60 lines
2.1 KiB
CMake
# EXPLANATION:
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# Shared Boost deps for standalone or nested libspinscale builds.
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# Always require Boost.Log as a shared library. Require Boost.System only on
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# versions that still ship a compiled stub (Ubuntu dropped it at Boost 1.89).
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#
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# Sets BOOST_SHARED_DEP_TARGETS for target_link_libraries(... ${BOOST_SHARED_DEP_TARGETS}).
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# Uses Boost:: imported targets (not a project INTERFACE lib) so export sets stay valid.
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set(BOOST_COMPILED_SYSTEM_REMOVED_VERSION "1.89.0")
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set(BOOST_SHARED_DEPS_MIN_VERSION "1.69")
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function(boostSharedDepsComponentsForVersion _boostVersion _outVar)
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set(_components log)
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if(_boostVersion VERSION_LESS "${BOOST_COMPILED_SYSTEM_REMOVED_VERSION}")
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list(APPEND _components system)
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endif()
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set(${_outVar} ${_components} PARENT_SCOPE)
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endfunction()
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function(boostSharedDepsLinkTargets _outVar)
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set(_targets Boost::log)
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if(TARGET Boost::system)
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list(APPEND _targets Boost::system)
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endif()
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set(${_outVar} ${_targets} PARENT_SCOPE)
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endfunction()
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function(boostSharedDepsReportStatus)
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if(TARGET Boost::system)
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message(STATUS
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"Boost ${Boost_VERSION}: linking Boost::system "
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"(compiled stub still present)")
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else()
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message(STATUS
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"Boost ${Boost_VERSION}: omitting Boost::system "
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"(header-only; compiled stub removed at "
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"${BOOST_COMPILED_SYSTEM_REMOVED_VERSION})")
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endif()
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endfunction()
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if(NOT BOOST_SHARED_DEPS_RESOLVED)
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# Prefer shared Boost libs where a compiled component still exists.
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set(Boost_USE_STATIC_LIBS OFF)
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set(Boost_USE_HEADER_ONLY OFF)
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# Resolve version before requesting components so we can skip system on
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# Boost 1.89+, where Ubuntu no longer packages libboost_system.
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find_package(Boost ${BOOST_SHARED_DEPS_MIN_VERSION} REQUIRED)
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boostSharedDepsComponentsForVersion("${Boost_VERSION}" _boostSharedDepsComponents)
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find_package(Boost ${BOOST_SHARED_DEPS_MIN_VERSION} REQUIRED
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COMPONENTS ${_boostSharedDepsComponents})
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boostSharedDepsLinkTargets(BOOST_SHARED_DEP_TARGETS)
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set(BOOST_SHARED_DEPS_RESOLVED TRUE)
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boostSharedDepsReportStatus()
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# Ensure remaining Boost libs (e.g. Log) use dynamic linking.
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add_compile_definitions(BOOST_ALL_DYN_LINK)
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endif()
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