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option(ENABLE_LDGOLD "Use GNU gold linker" ON)
set(LDGOLD_FOUND FALSE)
if(ENABLE_LDGOLD)
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")
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fuse-ld=gold")
set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fuse-ld=gold")
set(LDGOLD_FOUND TRUE)
message(STATUS "Linker: GNU gold")
else()
message(WARNING "GNU gold linker is not available, falling back to default system linker")
endif()
else()
message(STATUS "Linker: Default system linker")
endif()
set(DEFAULT_ENABLE_DEBUGFISSION FALSE)
if(CMAKE_BUILD_TYPE STREQUAL Debug OR
CMAKE_BUILD_TYPE STREQUAL RelWithDebInfo AND
LDGOLD_FOUND)
set(DEFAULT_ENABLE_DEBUGFISSION TRUE)
endif()
include(CMakeDependentOption)
cmake_dependent_option(ENABLE_DEBUGFISSION "Enable Debug Fission support" ON
"DEFAULT_ENABLE_DEBUGFISSION" OFF)
set(DEBUGFISSION_FOUND FALSE)
if(ENABLE_DEBUGFISSION)
include(TestCXXAcceptsFlag)
check_cxx_accepts_flag(-gsplit-dwarf CXX_ACCEPTS_GSPLIT_DWARF)
if(CXX_ACCEPTS_GSPLIT_DWARF)
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -gsplit-dwarf")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -gsplit-dwarf")
set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--gdb-index")
set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--gdb-index")
set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,--gdb-index")
set(DEBUGFISSION_FOUND TRUE)
message(STATUS "Debug Fission enabled")
else()
message(WARNING "Debug Fission is not available")
endif()
endif()
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