2019-01-27 12:56:36 +01:00
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# Helpers for inter-procedural optimizations (IPO)
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2019-01-27 13:10:56 +01:00
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option(DISABLE_IPO "Disable IPO in supported release builds." OFF)
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2019-01-27 12:56:36 +01:00
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# Enabled IPO for a LIST of CMake build types.
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# Provides IPO_BUILD_ENABLED to the parent scope.
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function(ipo_enable IPO_ENABLED_BUILDS)
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include(CheckIPOSupported)
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check_ipo_supported(RESULT IPO_SUPPORTED OUTPUT IPO_LOG)
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set(IPO_BUILD_ENABLED OFF PARENT_SCOPE)
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if(IPO_SUPPORTED AND ${CMAKE_BUILD_TYPE} IN_LIST IPO_ENABLED_BUILDS)
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2019-01-27 13:10:56 +01:00
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if(NOT DISABLE_IPO)
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message(STATUS "IPO supported and enabled in ${CMAKE_BUILD_TYPE}.")
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set(IPO_BUILD_ENABLED ON PARENT_SCOPE)
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else()
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message(STATUS "IPO explicitly disabled.")
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endif()
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2019-01-27 12:56:36 +01:00
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elseif(NOT IPO_SUPPORTED AND ${CMAKE_BUILD_TYPE} IN_LIST IPO_ENABLED_BUILDS)
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message(STATUS "IPO not supported: ${IPO_LOG}.")
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endif()
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endfunction()
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# Sets appropriate IPO properties on target _target
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# if IPO is supported and enabled for the current build.
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function(ipo_set_target_properties _target)
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if(IPO_BUILD_ENABLED)
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set_property(TARGET ${_target} PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)
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endif()
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endfunction()
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