Merge pull request #662 from resetnow/vulkan-loader-linux

third_party: vulkan: loader: fix Linux build

third_party/vulkan/loader/premake5.lua

@@ -2,7 +2,7 @@ group("third_party")
 project("vulkan-loader")
   uuid("07d77359-1618-43e6-8a4a-0ee9ddc5fa6a")
   kind("StaticLib")
-  language("C++")
+  language("C")
 
   defines({
     "_LIB",
@@ -23,3 +23,10 @@ project("vulkan-loader")
     defines({
       "VK_USE_PLATFORM_WIN32_KHR",
     })
+  filter("platforms:not Windows")
+    removefiles("dirent_on_windows.c")
+  filter("platforms:Linux")
+    defines({
+      [[SYSCONFDIR="\"/etc\""]],
+      [[DATADIR="\"/usr/share\""]],
+    })