use policies instead of target values

4 files changed, 8 insertions, 6 deletions

diff --git a/tests/projects/c++/modules/stdmodules/xmake.lua b/tests/projects/c++/modules/stdmodules/xmake.lua
index 8007553ed..496961cd0 100644
--- a/tests/projects/c++/modules/stdmodules/xmake.lua
+++ b/tests/projects/c++/modules/stdmodules/xmake.lua
@@ -5,11 +5,11 @@ target("mod")
     set_kind("static")
     add_files("src/*.cpp", "src/*.mpp")
 
-    set_values("c++.clang.module.stdmodules", true)
+    set_policy("c++.clang.module.stdmodules", true)
 
 target("stdmodules")
     set_kind("binary")
     add_files("test/*.cpp")
     add_deps("mod")
 
-    set_values("c++.clang.module.stdmodules", true)
+    set_policy("c++.clang.module.stdmodules", true)
diff --git a/tests/projects/c++/modules/stdmodules_multiple_targets/xmake.lua b/tests/projects/c++/modules/stdmodules_multiple_targets/xmake.lua
index 330fa56f8..3501597ff 100644
--- a/tests/projects/c++/modules/stdmodules_multiple_targets/xmake.lua
+++ b/tests/projects/c++/modules/stdmodules_multiple_targets/xmake.lua
@@ -5,10 +5,10 @@ target("mod")
     set_kind("static")
     add_files("src/*.cpp", "src/*.mpp")
 
-    set_values("c++.clang.module.stdmodules", true)
+    set_policy("c++.clang.module.stdmodules", true)
 
 target("mod2")
     set_kind("static")
     add_files("src/*.cpp", "src/*.mpp")
 
-    set_values("c++.clang.module.stdmodules", true)
+    set_policy("c++.clang.module.stdmodules", true)
diff --git a/xmake/core/project/policy.lua b/xmake/core/project/policy.lua
index 8148a37e2..ac93415f9 100644
--- a/xmake/core/project/policy.lua
+++ b/xmake/core/project/policy.lua
@@ -35,6 +35,8 @@ function policy.policies()
     if not policies then
         policies =
         {
+            -- enable clang std modulemap
+            ["c++.clang.module.stdmodules"]          = {description = "Enable clang std modulemap.", default = false, type = "boolean"},
             -- we will check and ignore all unsupported flags by default, but we can also pass `{force = true}` to force to set flags, e.g. add_ldflags("-static", {force = true})
             ["check.auto_ignore_flags"]          = {description = "Enable check and ignore unsupported flags automatically.", default = true, type = "boolean"},
             -- we will map gcc flags to the current compiler and linker by default.
diff --git a/xmake/rules/c++/modules/modules_support/clang.lua b/xmake/rules/c++/modules/modules_support/clang.lua
index 74b2f62cc..747c62166 100644
--- a/xmake/rules/c++/modules/modules_support/clang.lua
+++ b/xmake/rules/c++/modules/modules_support/clang.lua
@@ -84,7 +84,7 @@ function load(target)
         target:add("cxxflags", modulestsflag)
     end
 
-    if target:values("c++.clang.modules.stdmodules") then
+    if target:policy("c++.clang.module.stdmodules") then
        target:add("cxxflags", builtinmodulemapflag, {force = true})
        target:add("cxxflags", implicitmodulesflag, {force = true})
     else
@@ -298,7 +298,7 @@ function generate_dependencies(target, sourcebatch, opt)
                         end
                     end
 
-                    assert(not (has_std_modules and not target:values("c++.clang.modules.stdmodules")),
+                    assert(not (has_std_modules and not target:policy("c++.clang.modules.stdmodules")),
                            [[On llvm <= 16 standard C++ modules are not supported ;
                            they can be emulated through clang modules and supported only on libc++ ;
                            please add -stdlib=libc++ cxx flag or disable strict mode]])