blender
/
blender
128
396
Fork 568
Code Issues 6.2k Pull Requests 750 Projects 19 Wiki Activity

CMake: add WITH_LINKER_LLD option for unix platforms 

Can give considerably faster linking, especially for debug builds.

This may be enabled by default but needs to be more thoroughly tested.
This commit is contained in:
Nathan Craddock 2020-04-27 14:10:56 +10:00 committed by Campbell Barton
parent 13abd3784a
commit 490c32c425
2 changed files with 15 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
CMakeLists.txt
View File

@ -475,6 +475,8 @@ endif()
if(CMAKE_COMPILER_IS_GNUCC)
option(WITH_LINKER_GOLD "Use ld.gold linker which is usually faster than ld.bfd" ON)
mark_as_advanced(WITH_LINKER_GOLD)
option(WITH_LINKER_LLD "Use ld.lld linker which is usually faster than ld.gold" OFF)
mark_as_advanced(WITH_LINKER_LLD)
endif()
if(CMAKE_COMPILER_IS_GNUCC OR CMAKE_C_COMPILER_ID MATCHES "Clang")

13
build_files/cmake/platform/platform_unix.cmake
View File

@ -575,6 +575,19 @@ if(CMAKE_COMPILER_IS_GNUCC)
unset(LD_VERSION)
endif()
if(WITH_LINKER_LLD)
execute_process(
COMMAND ${CMAKE_C_COMPILER} -fuse-ld=lld -Wl,--version
ERROR_QUIET OUTPUT_VARIABLE LD_VERSION)
if("${LD_VERSION}" MATCHES "LLD")
set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fuse-ld=lld")
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fuse-ld=lld")
else()
message(STATUS "LLD linker isn't available, using the default system linker.")
endif()
unset(LD_VERSION)
endif()
# CLang is the same as GCC for now.
elseif(CMAKE_C_COMPILER_ID MATCHES "Clang")
set(PLATFORM_CFLAGS "-pipe -fPIC -funsigned-char -fno-strict-aliasing")