diff options
Diffstat (limited to 'xmake/rules/c++/build_optimization/config.lua')
| -rw-r--r-- | xmake/rules/c++/build_optimization/config.lua | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/xmake/rules/c++/build_optimization/config.lua b/xmake/rules/c++/build_optimization/config.lua index 0f79a909b..686ef76c5 100644 --- a/xmake/rules/c++/build_optimization/config.lua +++ b/xmake/rules/c++/build_optimization/config.lua @@ -44,6 +44,21 @@ function _add_lto_optimization(target, sourcekind) elseif ld == "clang" or ld == "clangxx" then target:add("ldflags", "-flto=thin") target:add("shflags", "-flto=thin") + + -- On Darwin, when using -flto along with -g and compiling and linking in separate steps, + -- you also need to pass -Wl,-object_path_lto,<lto-filename>.o at the linking step to instruct + -- the ld64 linker not to delete the temporary object file generated during Link Time Optimization + -- (this flag is automatically passed to the linker by Clang if compilation and linking are done in a single step). + -- + -- This allows debugging the executable as well as generating the .dSYM bundle using dsymutil(1). + -- + -- @see https://github.com/xmake-io/xmake/issues/7029 + -- https://clang.llvm.org/docs/CommandGuide/clang.html + if target:is_plat("macosx", "iphoneos", "watchos") then + local lto_objectfile = target:objectfile(target:targetfile() .. ".lto") + target:add("ldflags", "-Wl,-object_path_lto," .. lto_objectfile) + target:add("shflags", "-Wl,-object_path_lto," .. lto_objectfile) + end elseif ld == "gcc" or ld == "gxx" then target:add("ldflags", "-flto") target:add("shflags", "-flto") |