diff options
| author | howie-f <rftc@gmx.de> | 2022-05-21 19:01:58 +0200 |
|---|---|---|
| committer | howie-f <rftc@gmx.de> | 2022-05-25 08:05:48 +0200 |
| commit | b0e83a1541982c61cf59ab91aacf880ce188b0e2 (patch) | |
| tree | 977b47a67a11d32fe187148406c1bfa9ba5311f2 | |
| parent | e22e7394f3f648323ca7543939dfc40fa7015aa8 (diff) | |
[cmake] add debugfission support for mold >= 1.2.0
| -rw-r--r-- | cmake/modules/MOLD.cmake | 41 |
1 files changed, 40 insertions, 1 deletions
diff --git a/cmake/modules/MOLD.cmake b/cmake/modules/MOLD.cmake index 0ecb276c8f..cb29ed1e95 100644 --- a/cmake/modules/MOLD.cmake +++ b/cmake/modules/MOLD.cmake @@ -16,6 +16,45 @@ if(ENABLE_MOLD) endif() execute_process(COMMAND ${CMAKE_CXX_COMPILER} ${COMPILER_ARGS} -Wl,--version ERROR_QUIET OUTPUT_VARIABLE LD_VERSION) + + set(DEFAULT_ENABLE_DEBUGFISSION FALSE) + if(CMAKE_BUILD_TYPE STREQUAL Debug OR + CMAKE_BUILD_TYPE STREQUAL RelWithDebInfo) + set(DEFAULT_ENABLE_DEBUGFISSION TRUE) + endif() + + include(CMakeDependentOption) + cmake_dependent_option(ENABLE_DEBUGFISSION "Enable Debug Fission support" ON + "DEFAULT_ENABLE_DEBUGFISSION" OFF) + + if(ENABLE_DEBUGFISSION) + include(TestCXXAcceptsFlag) + check_cxx_accepts_flag(-gsplit-dwarf CXX_ACCEPTS_GSPLIT_DWARF) + + # extract mold version + set(LD_VERSION_LIST ${LD_VERSION}) + separate_arguments(LD_VERSION_LIST) + list(GET LD_VERSION_LIST 1 MOLD_VERSION) + + set(DEBUGFISSION_AVAILABLE FALSE) + if(CXX_ACCEPTS_GSPLIT_DWARF) + set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -gsplit-dwarf") + set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -gsplit-dwarf") + if(${MOLD_VERSION} VERSION_GREATER_EQUAL "1.2.0") + 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_AVAILABLE TRUE) + endif() + endif() + + if(DEBUGFISSION_AVAILABLE) + message(STATUS "Debug Fission enabled") + else() + message(WARNING "Debug Fission is not available") + endif() + endif() + if(LD_VERSION MATCHES "mold") include(FindPackageHandleStandardArgs) find_program(MOLD_EXECUTABLE mold) @@ -25,7 +64,7 @@ if(ENABLE_MOLD) set(CMAKE_LINKER ${MOLD_EXECUTABLE}) set(CMAKE_CXX_LINK_FLAGS ${COMPILER_ARGS}) set(CMAKE_C_LINK_FLAGS ${COMPILER_ARGS}) - set(CMAKE_EXE_LINKER_FLAGS "${LD_FLAGS} ${COMPILER_ARGS}") + set(CMAKE_EXE_LINKER_FLAGS "${LD_FLAGS} ${COMPILER_ARGS} ${CMAKE_EXE_LINKER_FLAGS}") set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}") set(CMAKE_MODULE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS}") message(STATUS "Linker: mold") |