From 703438d8e55dbfd1c2021d0bc12e36edd1e227e2 Mon Sep 17 00:00:00 2001
From: Chris Cannam <cannam@all-day-breakfast.com>
Date: Fri, 27 Sep 2024 17:47:32 +0100
Subject: [PATCH] Permit a special case in which libraries are not unloaded

---
 src/vamp-hostsdk/Files.cpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/vamp-hostsdk/Files.cpp b/src/vamp-hostsdk/Files.cpp
index 8dda7ff..171f4a3 100644
--- a/src/vamp-hostsdk/Files.cpp
+++ b/src/vamp-hostsdk/Files.cpp
@@ -188,11 +188,18 @@ Files::loadLibrary(string path)
 void
 Files::unloadLibrary(void *handle)
 {
+    // For special purposes allow the build to specify that libraries
+    // should not be unloaded. This turns out to be useful with some
+    // older plugins we have tried on 32-bit Windows which crash if
+    // unloaded and reloaded again in the same process.
+#ifndef DO_NOT_FREE_LIBRARIES
+    
 #ifdef _WIN32
     FreeLibrary((HINSTANCE)handle);
 #else
     dlclose(handle);
 #endif
+#endif
 }
 
 void *