stellar

Enable link-time optimization properly

2 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/ CMakeLists.txt b/ CMakeLists.txt

@@ -3,7 +3,7 @@ set(CMAKE_EXPORT_COMPILE_COMMANDS ON) project( Stellar

VERSION 1.2.0

VERSION 1.2.1

DESCRIPTION "Chess engine written in C++" HOMEPAGE_URL https://git.dimitrijedobrota.com/stellar.git LANGUAGES CXX

@@ -35,16 +35,6 @@ function(stellar_target_precompile_headers) endif() endfunction()

CHECK_CXX_COMPILER_FLAG("-flto" COMPILER_SUPPORTS_LTO)

if(COMPILER_SUPPORTS_LTO)

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -flto")

endif()

CHECK_CXX_COMPILER_FLAG("-fno-fat-lto-objects" COMPILER_SUPPORTS_LTO_NOFAT)

if(COMPILER_SUPPORTS_LTO_NOFAT)

set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fno-fat-lto-objects")

endif()

CHECK_CXX_COMPILER_FLAG("-fconstexpr-ops-limit=10000000000" COMPILER_SUPPORTS_CONSTEXPR_OPS_LIMIT) if(COMPILER_SUPPORTS_CONSTEXPR_OPS_LIMIT) set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fconstexpr-ops-limit=1000000000")

@@ -61,3 +51,13 @@ if(COMPILER_SUPPORTS_MARCH_NATIVE) endif() add_subdirectory(src)

include(CheckIPOSupported)

check_ipo_supported(RESULT lto_supported OUTPUT lto_error)

if( lto_supported )

message(STATUS "IPO / LTO enabled")

set_property(TARGET engine PROPERTY INTERPROCEDURAL_OPTIMIZATION TRUE)

else()

message(STATUS "IPO / LTO not supported: <${error}>")

endif()

diff --git a/ src/engine/CMakeLists.txt b/ src/engine/CMakeLists.txt

@@ -4,6 +4,7 @@ add_executable(engine engine.cpp )

target_link_libraries(engine PRIVATE Stellar_version PRIVATE board