add build.warning policy

1 files changed, 17 insertions, 1 deletions

diff --git a/xmake/modules/core/tools/gcc.lua b/xmake/modules/core/tools/gcc.lua
index cf8fad4db..93674a702 100644
--- a/xmake/modules/core/tools/gcc.lua
+++ b/xmake/modules/core/tools/gcc.lua
@@ -368,6 +368,22 @@ function link(self, objectfiles, targetkind, targetfile, flags)
     os.runv(program, argv, {envs = self:runenvs()})
 end
 
+-- has warnings output?
+function _has_warnings()
+    local warnings = _g.warnings
+    if warnings == nil then
+        warnings = option.get("diagnosis") or option.get("warning")
+        if warnings == nil and os.isfile(os.projectfile()) and project.policy("build.warning") ~= nil then
+            warnings = project.policy("build.warning")
+        end
+        if warnings == nil then
+            warnings = global.get("build_warning")
+        end
+        _g.warnings = warnings or false
+    end
+    return warnings
+end
+
 -- has color diagnostics?
 function _has_color_diagnostics(self)
     local colors_diagnostics = _g._HAS_COLOR_DIAGNOSTICS
@@ -657,7 +673,7 @@ function compile(self, sourcefile, objectfile, dependinfo, flags)
         {
             function (ok, outdata, errdata)
                 -- show warnings?
-                if ok and errdata and #errdata > 0 and (option.get("diagnosis") or option.get("warning") or global.get("build_warning")) then
+                if ok and errdata and #errdata > 0 and _has_warnings() then
                     local lines = errdata:split('\n', {plain = true})
                     if #lines > 0 then
                         if not option.get("diagnosis") then