add c++ features for clang

1 files changed, 78 insertions, 2 deletions

diff --git a/xmake/modules/detect/tools/clang/cxxfeatures.lua b/xmake/modules/detect/tools/clang/cxxfeatures.lua
index e458a2308..93d18e090 100644
--- a/xmake/modules/detect/tools/clang/cxxfeatures.lua
+++ b/xmake/modules/detect/tools/clang/cxxfeatures.lua
@@ -36,8 +36,84 @@ function main()
     -- init features
     _g.features = cxxfeatures()
 
-    -- TODO
-    -- set("", "")
+    -- init conditions
+    local clang_minver  = "((__clang_major__ * 100) + __clang_minor__) >= 301"
+    local clang34_cxx14 = "((__clang_major__ * 100) + __clang_minor__) >= 304 && __cplusplus > 201103L"
+    local clang31_cxx11 = clang_minver .. " && __cplusplus >= 201103L"
+    local clang29_cxx11 = clang_minver .. " && __cplusplus >= 201103L"
+    local clang_cxx98   = clang_minver .. " && __cplusplus >= 199711L"
+
+    -- set features for __has_feature()
+    local features_of_has_feature = 
+    {
+         "cxx_alias_templates"
+    ,    "cxx_alignas"
+    ,    "cxx_attributes"
+    ,    "cxx_auto_type"
+    ,    "cxx_binary_literals"
+    ,    "cxx_constexpr"
+    ,    "cxx_contextual_conversions"
+    ,    "cxx_decltype"
+    ,    "cxx_default_function_template_args"
+    ,    "cxx_defaulted_functions"
+    ,    "cxx_delegating_constructors"
+    ,    "cxx_deleted_functions"
+    ,    "cxx_explicit_conversions"
+    ,    "cxx_generalized_initializers"
+    ,    "cxx_inheriting_constructors"
+    ,    "cxx_lambdas"
+    ,    "cxx_local_type_template_args"
+    ,    "cxx_noexcept"
+    ,    "cxx_nonstatic_member_init"
+    ,    "cxx_nullptr"
+    ,    "cxx_range_for"
+    ,    "cxx_raw_string_literals"
+    ,    "cxx_reference_qualified_functions"
+    ,    "cxx_relaxed_constexpr"
+    ,    "cxx_return_type_deduction"
+    ,    "cxx_rvalue_references"
+    ,    "cxx_static_assert"
+    ,    "cxx_strong_enums"
+    ,    "cxx_thread_local"
+    ,    "cxx_unicode_literals"
+    ,    "cxx_unrestricted_unions"
+    ,    "cxx_user_literals"
+    ,    "cxx_variable_templates"
+    ,    "cxx_variadic_templates"
+    ,   {"cxx_aggregate_default_initializers", "cxx_aggregate_nsdmi"          }
+    ,   {"cxx_trailing_return_types",          "cxx_trailing_return"          }
+    ,   {"cxx_alignof",                        "cxx_alignas"                  }
+    ,   {"cxx_final",                          "cxx_override_control"         }
+    ,   {"cxx_override",                       "cxx_override_control"         }
+    ,   {"cxx_uniform_initialization",         "cxx_generalized_initializers" }
+    ,   {"cxx_defaulted_move_initializers",    "cxx_defaulted_functions"      }
+    ,   {"cxx_lambda_init_captures",           "cxx_init_captures"            }
+    }
+    for _, feature in ipairs(features_of_has_feature) do
+        local name = feature
+        local test = feature
+        if type(feature) == "table" then
+            name = feature[1]
+            test = feature[2]
+        end
+        _set(name, clang_minver .. " && __has_feature(" .. test .. ")")
+    end
+
+    -- set features
+    _set("cxx_attribute_deprecated",         clang34_cxx14) -- http://llvm.org/bugs/show_bug.cgi?id=19242
+    _set("cxx_decltype_auto",                clang34_cxx14) -- http://llvm.org/bugs/show_bug.cgi?id=19698
+    _set("cxx_digit_separators",             clang34_cxx14)
+    _set("cxx_generic_lambdas",              clang34_cxx14) -- http://llvm.org/bugs/show_bug.cgi?id=19674
+    _set("cxx_enum_forward_declarations",    clang31_cxx11)
+    _set("cxx_sizeof_member",                clang31_cxx11)
+    _set("cxx_extended_friend_declarations", clang29_cxx11)
+    _set("cxx_extern_templates",             clang29_cxx11)
+    _set("cxx_func_identifier",              clang29_cxx11)
+    _set("cxx_inline_namespaces",            clang29_cxx11)
+    _set("cxx_long_long_type",               clang29_cxx11)
+    _set("cxx_right_angle_brackets",         clang29_cxx11)
+    _set("cxx_variadic_macros",              clang29_cxx11)
+    _set("cxx_template_template_parameters", clang_cxx98)
 
     -- get features
     return _g.features