add xmake check syntax

2 files changed, 60 insertions, 1 deletions

diff --git a/xmake/rules/c++/config/main.lua b/xmake/rules/c++/config/main.lua
index dce7cff6b..bde849965 100644
--- a/xmake/rules/c++/config/main.lua
+++ b/xmake/rules/c++/config/main.lua
@@ -20,9 +20,10 @@
 
 -- imports
 import("rules.c++.config.basic", {rootdir = os.programdir(), alias = "config_basic"})
+import("rules.c++.config.dynamic_debugging", {rootdir = os.programdir(), alias = "config_dynamic_debugging"})
+import("rules.c++.config.syntax_only", {rootdir = os.programdir(), alias = "config_syntax_only"})
 import("rules.c++.config.optimization", {rootdir = os.programdir(), alias = "config_optimization"})
 import("rules.c++.config.sanitizer", {rootdir = os.programdir(), alias = "config_sanitizer"})
-import("rules.c++.config.dynamic_debugging", {rootdir = os.programdir(), alias = "config_dynamic_debugging"})
 
 -- main entry
 function main(target, sourcekind)
@@ -33,6 +34,9 @@ function main(target, sourcekind)
     -- config dynamic debugging configs (must be before optimization to disable incompatible flags)
     config_dynamic_debugging(target, sourcekind)
 
+    -- config syntax only configs (must be before optimization to disable incompatible flags)
+    config_syntax_only(target, sourcekind)
+
     -- config optimization configs
     config_optimization(target, sourcekind)
 
diff --git a/xmake/rules/c++/config/syntax_only.lua b/xmake/rules/c++/config/syntax_only.lua
new file mode 100644
index 000000000..4f0045192
--- /dev/null
+++ b/xmake/rules/c++/config/syntax_only.lua
@@ -0,0 +1,55 @@
+--!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        syntax_only.lua
+--
+
+-- imports
+import("core.project.project")
+
+-- add syntax-only check support
+-- @see https://github.com/mesonbuild/meson/issues/12228
+function main(target, sourcekind)
+    -- check if syntax-only is enabled
+    local enabled = target:policy("build.c++.syntax_only")
+    if enabled == nil then
+        enabled = project.policy("build.c++.syntax_only")
+    end
+    if not enabled then
+        return
+    end
+
+    -- get flag name for sourcekind
+    local flagnames = {
+        cc = "cflags",
+        cxx = "cxxflags",
+        mm = "mflags",
+        mxx = "mxxflags"
+    }
+    local cflag = flagnames[sourcekind] or (sourcekind == "cxx" and "cxxflags" or "cflags")
+
+    -- check compiler and add appropriate flag
+    local toolname = sourcekind == "cxx" and "cxx" or "cc"
+    if target:has_tool(toolname, "gcc", "gxx", "clang", "clangxx") then
+        -- gcc/clang: -fsyntax-only
+        target:add(cflag, "-fsyntax-only", {force = true})
+    elseif target:has_tool(toolname, "cl") then
+        -- MSVC: /Zs (syntax check only)
+        target:add(cflag, "/Zs", {force = true})
+    end
+end
+