fixed linux include libs and sdl2 include path

premake5.lua

@@ -47,7 +47,7 @@ project "SakuraVNE" --project under solution
     }
 
     links{
-        "ImGui.lib"
+        "ImGui"
     }
 
     filter "system:windows"
@@ -87,6 +87,18 @@ project "SakuraVNE" --project under solution
             "PLATFORM_LINUX"
         }
 
+	includedirs{
+	    "/usr/include/SDL2"
+	}
+        
+        -- TELL THE LINKER TO USE SYSTEM LIBS
+        links {
+            "SDL2",
+            "GL",       -- OpenGL is usually required for ImGui/SDL apps
+            "dl",       -- Dynamic linking loader (often needed)
+            "pthread"   -- POSIX threads (often needed)
+        }    
+
     filter "configurations:Debug"
         defines "DEBUG"
         symbols "On"