add lto for ldc2

5 files changed, 75 insertions, 3 deletions

diff --git a/xmake/rules/c++/build_optimization/load.lua b/xmake/rules/c++/build_optimization/config.lua
index bd1831778..6baa26802 100644
--- a/xmake/rules/c++/build_optimization/load.lua
+++ b/xmake/rules/c++/build_optimization/config.lua
@@ -15,7 +15,7 @@
 -- Copyright (C) 2015-present, TBOOX Open Source Group.
 --
 -- @author      ruki
--- @file        load.lua
+-- @file        config.lua
 --
 
 -- imports
diff --git a/xmake/rules/c++/build_optimization/xmake.lua b/xmake/rules/c++/build_optimization/xmake.lua
index c08b74141..d4df5df98 100644
--- a/xmake/rules/c++/build_optimization/xmake.lua
+++ b/xmake/rules/c++/build_optimization/xmake.lua
@@ -21,12 +21,12 @@
 -- define rule: c.build.optimization
 rule("c.build.optimization")
     on_config(function (target)
-        import("load")(target, "cc")
+        import("config")(target, "cc")
     end)
 
 -- define rule: c++.build.optimization
 rule("c++.build.optimization")
     on_config(function (target)
-        import("load")(target, "cxx")
+        import("config")(target, "cxx")
     end)
 
diff --git a/xmake/rules/dlang/build_optimization/config.lua b/xmake/rules/dlang/build_optimization/config.lua
new file mode 100644
index 000000000..6de97dfdd
--- /dev/null
+++ b/xmake/rules/dlang/build_optimization/config.lua
@@ -0,0 +1,47 @@
+--!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, TBOOX Open Source Group.
+--
+-- @author      ruki
+-- @file        config.lua
+--
+
+-- imports
+import("core.tool.compiler")
+import("core.project.project")
+
+-- add lto optimization
+function _add_lto_optimization(target)
+    if target:has_tool("dc", "ldc2") and target:has_tool("dcld", "ldc2") then
+        target:add("dcflags", "-flto=thin", {force = true})
+        target:add("ldflags", "-flto=thin", {force = true})
+        target:add("shflags", "-flto=thin", {force = true})
+        -- 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("dc", "optimize", optimize)
+            target:add("ldflags", optimize_flags)
+            target:add("shflags", optimize_flags)
+        end
+    end
+end
+
+function main(target)
+    if target:policy("build.optimization.lto") or
+        project.policy("build.optimization.lto") then
+        _add_lto_optimization(target)
+    end
+end
diff --git a/xmake/rules/dlang/build_optimization/xmake.lua b/xmake/rules/dlang/build_optimization/xmake.lua
new file mode 100644
index 000000000..89a4a1e8c
--- /dev/null
+++ b/xmake/rules/dlang/build_optimization/xmake.lua
@@ -0,0 +1,24 @@
+--!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, TBOOX Open Source Group.
+--
+-- @author      ruki
+-- @file        xmake.lua
+--
+
+-- define rule: dlang.build.optimization
+rule("dlang.build.optimization")
+    on_config("config")
+
diff --git a/xmake/rules/dlang/xmake.lua b/xmake/rules/dlang/xmake.lua
index cebbaef3e..7ffb8c42f 100644
--- a/xmake/rules/dlang/xmake.lua
+++ b/xmake/rules/dlang/xmake.lua
@@ -20,6 +20,7 @@
 
 rule("dlang.build")
     set_sourcekinds("dc")
+    add_deps("dlang.build.optimization")
     on_build_files("private.action.build.object", {batch = true})
     on_load(function (target)
         local toolchains = target:get("toolchains") or get_config("toolchain")