From c587a0e4cd6f246b2f8cf47e9ba778723bceca36 Mon Sep 17 00:00:00 2001
From: nsubiron <nsubiron@cvc.uab.es>
Date: Wed, 26 Apr 2017 17:18:24 +0200
Subject: [PATCH] Actually, there was something to do there

---
 Source/Carla/Carla.Build.cs | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/Source/Carla/Carla.Build.cs b/Source/Carla/Carla.Build.cs
index 30bfeea8c..f0b3bfed6 100644
--- a/Source/Carla/Carla.Build.cs
+++ b/Source/Carla/Carla.Build.cs
@@ -140,7 +140,23 @@ public class Carla : ModuleRules
 
   private void AddLibPNGDependency(TargetInfo Target)
   {
-    // Nothing to be done here.
+    if (Target.Platform == UnrealTargetPlatform.Linux)
+    {
+      string UE4Root = System.Environment.GetEnvironmentVariable("UE4_ROOT");
+      if (string.IsNullOrEmpty(UE4Root))
+      {
+        PublicAdditionalLibraries.Add("png");
+      }
+      else
+      {
+        if (!System.IO.Directory.Exists(UE4Root))
+        {
+          throw new System.Exception("UE4_ROOT points to a non-existant directory, please correct this environment variable.");
+        }
+        PublicAdditionalLibraries.Add("ThirdParty/libPNG/libPNG-1.5.2/lib/Linux/x86_64-unknown-linux-gnu/libpng.a");
+        PublicAdditionalLibraries.Add("ThirdParty/zlib/v1.2.8/lib/Linux/x86_64-unknown-linux-gnu/libz_fPIC.a");
+      }
+    }
   }
 
   private void AddCarlaServerDependency(TargetInfo Target)