Index: /trunk/src/VBox/Additions/common/crOpenGL/load.c
===================================================================
--- /trunk/src/VBox/Additions/common/crOpenGL/load.c	(revision 58617)
+++ /trunk/src/VBox/Additions/common/crOpenGL/load.c	(revision 58618)
@@ -1126,4 +1126,24 @@
 /* Sigh -- we can't do initialization at load time, since Windows forbids
  * the loading of other libraries from DLLMain. */
+
+/** @note On Linux we make our shared library executable as a quick way of
+ * testing whether a particular guest supports 3D in the current configuration.
+ * If 3D is not enabled, the constructor will exit with status 1.  If the
+ * library cannot be loaded at all (e.g. missing dependencies) executing it will
+ * also fail. */
+#ifdef RT_OS_LINUX
+# ifdef RT_ARCH_AMD64
+const char pszInterpreter[] __attribute__((section(".interp"))) = "/lib64/ld-linux-x86-64.so.2";
+# else
+const char pszInterpreter[] __attribute__((section(".interp"))) = "/lib/ld-linux.so.2";
+# endif
+
+extern void LibMain()
+{
+   if (!stubInit())
+       _exit(1);
+   _exit(0);
+}
+#endif
 
 #ifdef WINDOWS