From 2175f46a10b260eed4f961a88a5d9dcf5cf0a74a Mon Sep 17 00:00:00 2001
From: Wojtek Figat <wojtek@figat.pl>
Date: Mon, 4 Mar 2024 14:23:17 +0100
Subject: [PATCH] Fix rpath on Linux to handle plugins libraries loading in
 Editor

#1941
---
 .../Flax.Build/Platforms/Linux/LinuxToolchain.cs     | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Source/Tools/Flax.Build/Platforms/Linux/LinuxToolchain.cs b/Source/Tools/Flax.Build/Platforms/Linux/LinuxToolchain.cs
index b5ca869f8..6aa767fc3 100644
--- a/Source/Tools/Flax.Build/Platforms/Linux/LinuxToolchain.cs
+++ b/Source/Tools/Flax.Build/Platforms/Linux/LinuxToolchain.cs
@@ -99,6 +99,18 @@ namespace Flax.Build.Platforms
                 //args.Add(string.Format("-Wl,-soname=\"{0}\"", soname));
             }
 
+            // Include any external folders into rpath for proper dlopen (eg. when opening Editor project with plugins)
+            if (options.LinkEnv.Output == LinkerOutput.SharedLibrary || options.LinkEnv.Output == LinkerOutput.Executable)
+            {
+                var originDir = Path.GetDirectoryName(outputFilePath);
+                foreach (var lib in options.LinkEnv.InputLibraries)
+                {
+                    var libDir = Path.GetDirectoryName(lib);
+                    if (libDir != originDir)
+                        args.Add($"-Wl,-rpath,\"{libDir}\"");
+                }
+            }
+
             args.Add(string.Format("-target {0}", ArchitectureName));
             args.Add(string.Format("--sysroot=\"{0}\"", ToolsetRoot.Replace('\\', '/')));