improve json-c

packages/j/json-c/xmake.lua

@@ -3,17 +3,16 @@ package("json-c")
     set_homepage("https://github.com/json-c/json-c/wiki")
     set_description("JSON parser for C")
 
-    set_urls("https://github.com/json-c/json-c/archive/json-c-$(version)-20180305.tar.gz")
+    set_urls("https://github.com/json-c/json-c/archive/json-c-$(version)-20180305.zip")
 
-    add_versions("0.13.1", "5d867baeb7f540abe8f3265ac18ed7a24f91fe3c5f4fd99ac3caba0708511b90")
+    add_versions("0.13.1", "8a244527eb4f697362f713f7d6dca3f6f9b5335e18fe7b705130ae62e599e864")
 
-    if is_host("windows") then
+    if is_plat("windows") and winos.version():gt("winxp") then
         add_deps("cmake")
+        on_install("windows", function (package)
+            import("package.tools.cmake").install(package)
+        end)
     end
-
-    on_install("windows", function (package)
-        import("package.tools.cmake").install(package)
-    end)
  
     on_install("linux", "macosx", function (package)
         local configs = {"--disable-dependency-tracking", "--disable-silent-rules"}