restrict build to linux only

Author: Persson-dev

packages/h/h2o/xmake.lua

@@ -41,7 +41,7 @@ package("h2o")
         end
     end)
 
-    on_install("macosx", "linux", "windows", "mingw", function (package)
+    on_install("linux", function (package)
         local configs = {}
         table.insert(configs, "-DCMAKE_BUILD_TYPE=" .. (package:is_debug() and "Debug" or "Release"))
         table.insert(configs, "-DBUILD_SHARED_LIBS=" .. (package:config("shared") and "ON" or "OFF"))