4154789670
add an option named "Scylla_ENABLE_LTO", which is off by default. if it is on, build the whole tree with ThinLTO enabled. Signed-off-by: Kefu Chai <kefu.chai@scylladb.com>
31 lines
1.0 KiB
CMake
31 lines
1.0 KiB
CMake
#
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# Copyright 2024-present ScyllaDB
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#
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#
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# SPDX-License-Identifier: LicenseRef-ScyllaDB-Source-Available-1.0
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#
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function(enable_lto name)
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get_target_property(type ${name} TYPE)
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if(type MATCHES "OBJECT_LIBRARY|STATIC_LIBRARY|SHARED_LIBRARY|EXECUTABLE")
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target_compile_options(${name} PRIVATE
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$<$<CONFIG:RelWithDebInfo>:-ffat-lto-objects>)
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set_property(TARGET ${name} PROPERTY
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INTERPROCEDURAL_OPTIMIZATION_RELWITHDEBINFO ON)
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if(type MATCHES "SHARED_LIBRARY|EXECUTABLE")
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target_link_options(${name}
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PRIVATE $<$<CONFIG:RelWithDebInfo>:-ffat-lto-objects>)
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endif()
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elseif(type STREQUAL "INTERFACE_LIBRARY")
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if (name MATCHES "^scylla_(.*)$")
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# Special handling for scylla_* libraries with whole archive linking
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set(library "${CMAKE_MATCH_1}")
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enable_lto(${library})
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# For non-scylla_* INTERFACE libraries, we don't compile them,
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# hence no need to set the LTO compile options or property
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endif()
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else()
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message(FATAL_ERROR "Unsupported TYPE: ${name}:${type}")
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endif()
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endfunction()
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