From dd81f1ccdb281f871ca2190b1c5021cc01135de0 Mon Sep 17 00:00:00 2001
From: Olly <Olly.cain@outlook.com>
Date: Tue, 26 Sep 2023 16:50:47 +0100
Subject: [PATCH] LoadPlugin: On Unix use RTLD_NOLOAD to check if library is
 already loaded

---
 Source/script/simba.script_pluginloader.pas | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/Source/script/simba.script_pluginloader.pas b/Source/script/simba.script_pluginloader.pas
index ee747842d..520a194bf 100644
--- a/Source/script/simba.script_pluginloader.pas
+++ b/Source/script/simba.script_pluginloader.pas
@@ -12,13 +12,22 @@ function LoadPlugin(FileName: String; ExtraSearchDirs: TStringArray = nil): TLib
 implementation
 
 uses
-  simba.mufasatypes, simba.env;
+  simba.mufasatypes, simba.env
+  {$IFDEF UNIX},
+  dl
+  {$ENDIF};
 
 function LoadPlugin(FileName: String; ExtraSearchDirs: TStringArray): TLibHandle;
 begin
   if (not FindPlugin(FileName, ExtraSearchDirs)) then
     raise Exception.CreateFmt('Unable to find plugin "%s"', [FileName]);
 
+  {$IFDEF UNIX}
+  Result := dlopen(PChar(FileName), RTLD_NOLOAD);
+  if (Result <> NilHandle) then
+    Exit;
+  {$ENDIF}
+
   Result := LoadLibrary(FileName);
 
   if (Result = NilHandle) then