diff -ru gdl-0.9.9_old/src/magick_cl.cpp gdl-0.9.9/src/magick_cl.cpp
--- gdl-0.9.9_old/src/magick_cl.cpp	2018-12-01 15:19:52.000000000 +0100
+++ gdl-0.9.9/src/magick_cl.cpp	2021-02-15 07:54:39.271235632 +0100
@@ -65,6 +65,10 @@
   unsigned int gValid[40];
   unsigned int gCount = 0;
   static bool notInitialized = true;
+  
+   __attribute__((constructor)) static void init(void) {
+    START_MAGICK;
+  }
 
   void magick_setup() {
     int i;