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cmake: enable link time optimisation (LTO)

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bookmist
2023-04-24 12:54:48 +03:00
parent 1253b0b62f
commit 2134285ed0
1 changed files with 24 additions and 0 deletions
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CMakeLists.txt
+24
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@@ -32,6 +32,30 @@ endif()
enable_testing()
cmake_policy(SET CMP0069 NEW)
set(CMAKE_POLICY_DEFAULT_CMP0069 NEW)
set(lto_usage_mode ALWAYS RELEASE_ONLY NEVER)
set(USE_LTO RELEASE_ONLY CACHE STRING "Use interprocedural optimization/link time optimization")
set_property(CACHE USE_LTO PROPERTY STRINGS ${lto_usage_mode})
if (NOT (USE_LTO STREQUAL "NEVER"))
include(CheckIPOSupported)
check_ipo_supported(RESULT ipo_supported OUTPUT ipo_supported_error)
if( ipo_supported )
if (USE_LTO STREQUAL "ALWAYS")
set(CMAKE_INTERPROCEDURAL_OPTIMIZATION TRUE)
elseif (USE_LTO STREQUAL "RELEASE_ONLY")
set(CMAKE_INTERPROCEDURAL_OPTIMIZATION_RELEASE TRUE)
endif()
else()
message(STATUS "IPO / LTO not supported: <${ipo_supported_error}>")
set(USE_LTO NEVER CACHE STRING "Use interprocedural optimization/link time optimization")
endif()
endif()
############################
########## Boost ###########
############################