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Update LTO exclusion list (#14407)
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@ -42,6 +42,18 @@ set(DEFAULT_ENABLE_LTO TRUE)
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if(CMAKE_BUILD_TYPE STREQUAL "Debug")
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set(DEFAULT_ENABLE_LTO FALSE)
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endif()
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#### LTO testing list ####
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# - Linux: seems to work always
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# - win32/msvc: works
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# - win32/gcc: fails to link
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# - win32/clang: works
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# - macOS on x86: seems to be fine
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# - macOS on ARM: crashes, see <https://github.com/minetest/minetest/issues/14397>
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# Note: since CMake has no easy architecture detection disabling for Mac entirely
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#### ####
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if((WIN32 AND CMAKE_CXX_COMPILER_ID STREQUAL "GNU") OR APPLE)
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set(DEFAULT_ENABLE_LTO FALSE)
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endif()
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set(ENABLE_LTO ${DEFAULT_ENABLE_LTO} CACHE BOOL "Use Link Time Optimization")
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set(DEFAULT_RUN_IN_PLACE FALSE)
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@ -66,20 +78,6 @@ if(NOT CMAKE_BUILD_TYPE)
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set(CMAKE_BUILD_TYPE Release CACHE STRING "Build type: Debug or Release" FORCE)
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endif()
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# FIXME: Windows build fails in multiple places to link, needs to be investigated.
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if (ENABLE_LTO AND NOT WIN32)
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include(CheckIPOSupported)
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check_ipo_supported(RESULT lto_supported OUTPUT lto_output)
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if(lto_supported)
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set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
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message(STATUS "LTO/IPO is enabled")
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else()
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message(STATUS "LTO/IPO requested but it is not supported by the compiler: ${lto_output}")
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endif()
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else()
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message(STATUS "LTO/IPO is not enabled")
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endif()
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set(ENABLE_UPDATE_CHECKER (NOT ${DEVELOPMENT_BUILD}) CACHE BOOL
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"Whether to enable update checks by default")
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@ -163,6 +161,20 @@ elseif(BUILD_CLIENT AND TARGET IrrlichtMt::IrrlichtMt)
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endif()
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endif()
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if (ENABLE_LTO OR CMAKE_INTERPROCEDURAL_OPTIMIZATION)
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include(CheckIPOSupported)
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check_ipo_supported(RESULT lto_supported OUTPUT lto_output)
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if(lto_supported)
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set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
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message(STATUS "LTO/IPO is enabled")
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else()
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set(CMAKE_INTERPROCEDURAL_OPTIMIZATION FALSE)
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message(STATUS "LTO/IPO was requested but is not supported by the compiler: ${lto_output}")
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endif()
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else()
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message(STATUS "LTO/IPO is not enabled")
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endif()
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if(CMAKE_CXX_COMPILER_ID STREQUAL "GNU")
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if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS "${GCC_MINIMUM_VERSION}")
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message(FATAL_ERROR "Insufficient gcc version, found ${CMAKE_CXX_COMPILER_VERSION}. "
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@ -28,7 +28,7 @@ General options and their default values:
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ENABLE_REDIS=ON - Build with libhiredis; Enables use of Redis map backend
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ENABLE_SPATIAL=ON - Build with LibSpatial; Speeds up AreaStores
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ENABLE_SOUND=ON - Build with OpenAL, libogg & libvorbis; in-game sounds
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ENABLE_LTO=ON - Build with IPO/LTO optimizations (smaller and more efficient than regular build)
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ENABLE_LTO=<varies> - Build with IPO/LTO optimizations (smaller and more efficient than regular build)
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ENABLE_LUAJIT=ON - Build with LuaJIT (much faster than non-JIT Lua)
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ENABLE_PROMETHEUS=OFF - Build with Prometheus metrics exporter (listens on tcp/30000 by default)
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ENABLE_SYSTEM_GMP=ON - Use GMP from system (much faster than bundled mini-gmp)
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