improve c++/objc++ rules

1 files changed, 0 insertions, 95 deletions

diff --git a/xmake/rules/c++/build_optimization/config.lua b/xmake/rules/c++/build_optimization/config.lua
deleted file mode 100644
index 686ef76c5..000000000
--- a/xmake/rules/c++/build_optimization/config.lua
+++ /dev/null
@@ -1,95 +0,0 @@
---!A cross-platform build utility based on Lua
---
--- Licensed under the Apache License, Version 2.0 (the "License");
--- you may not use this file except in compliance with the License.
--- You may obtain a copy of the License at
---
---     http://www.apache.org/licenses/LICENSE-2.0
---
--- Unless required by applicable law or agreed to in writing, software
--- distributed under the License is distributed on an "AS IS" BASIS,
--- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
--- See the License for the specific language governing permissions and
--- limitations under the License.
---
--- Copyright (C) 2015-present, Xmake Open Source Community.
---
--- @author      ruki
--- @file        config.lua
---
-
--- imports
-import("core.tool.compiler")
-import("core.project.project")
-
--- add lto optimization
-function _add_lto_optimization(target, sourcekind)
-
-    -- add cflags
-    local _, cc = target:tool(sourcekind)
-    local cflag = sourcekind == "cxx" and "cxxflags" or "cflags"
-    if cc == "cl" then
-        target:add(cflag, "-GL")
-    elseif cc == "clang" or cc == "clangxx" or cc == "clang_cl" then
-        target:add(cflag, "-flto=thin")
-    elseif cc == "gcc" or cc == "gxx" then
-        target:add(cflag, "-flto")
-    end
-
-    -- add ldflags and shflags
-    local program, ld = target:tool("ld")
-    if ld == "link" then
-        target:add("ldflags", "-LTCG")
-        target:add("shflags", "-LTCG")
-    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")
-
-        -- to use the link-time optimizer, -flto and optimization options should be specified at compile time and during the final link.
-        -- @see https://gcc.gnu.org/onlinedocs/gcc/Optimize-Options.html
-        local optimize = target:get("optimize")
-        if optimize then
-            local optimize_flags = compiler.map_flags(sourcekind == "cc" and "c" or "cxx", "optimize", optimize)
-            target:add("ldflags", optimize_flags)
-            target:add("shflags", optimize_flags)
-        end
-    end
-
-    local program, ar = target:tool("ar")
-    if cc == "clang_cl" then
-        if ld == "link" then
-            wprint([[Unsupported toolset(%s) for lto, please use `set_toolset("ld", "lld-link")`]], ld)
-            target:set("toolset", "ld", "lld-link")
-            target:set("toolset", "sh", "lld-link")
-        end
-        if ar ~= "llvm-ar" and ar ~= "llvm_ar" then
-            wprint([[Unsupported toolset(%s) for lto, please use `set_toolset("ar", "llvm-ar")`]], ar)
-            target:set("toolset", "ar", "llvm-ar")
-        end
-    end
-end
-
-function main(target, sourcekind)
-    if target:policy("build.optimization.lto") or
-        project.policy("build.optimization.lto") then
-        _add_lto_optimization(target, sourcekind)
-    end
-end