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Add GNU gold option (default for Linux Release builds)

This commit is contained in:
Jack Andersen 2015-12-22 18:16:54 -10:00
parent de3ccfadd0
commit 731bf406a1
1 changed files with 19 additions and 0 deletions
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19
CMakeLists.txt
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@ -15,6 +15,25 @@ if(${CMAKE_SYSTEM_NAME} MATCHES "FreeBSD")
include_directories(/usr/local/include)
endif()
if(${CMAKE_BUILD_TYPE} STREQUAL "Release" AND ${CMAKE_SYSTEM_NAME} STREQUAL Linux)
option(USE_LD_GOLD "Link with GNU Gold and enable LTO" ON)
else()
option(USE_LD_GOLD "Link with GNU Gold and enable LTO" OFF)
endif()
if(USE_LD_GOLD AND ("${CMAKE_CXX_COMPILER_ID}" STREQUAL "Clang" OR "${CMAKE_CXX_COMPILER_ID}" STREQUAL "GNU"))
execute_process(COMMAND ${CMAKE_C_COMPILER} -fuse-ld=gold -Wl,--version ERROR_QUIET OUTPUT_VARIABLE LD_VERSION)
if("${LD_VERSION}" MATCHES "GNU gold")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fuse-ld=gold -Wl,--disable-new-dtags")
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fuse-ld=gold -Wl,--disable-new-dtags")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -flto")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -flto")
message(STATUS "GNU gold linker enabled.")
else()
message(WARNING "GNU gold linker isn't available, using the default system linker.")
set(USE_LD_GOLD OFF)
endif()
endif()
set(BOO_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/hecl/extern/libBoo/include)
set(HECL_INCLUDE_DIR ${CMAKE_CURRENT_SOURCE_DIR}/hecl/include
${CMAKE_CURRENT_SOURCE_DIR}/hecl/blender)