Applied patch from Burkhard Linke <[email protected]>. …

…Add support for newer boehm-gc versions.

configure.in

@@ -851,6 +851,14 @@ case "x$gc" in
 		if test "x$found_gc_enable" = "xyes"; then
 			BOEHM_DEFINES="-DHAVE_GC_ENABLE $BOEHM_DEFINES"
 		fi
+
+		# check whether we need to explicitly allow
+               	# thread registering
+               	AC_CHECK_LIB(gc, GC_allow_register_threads, found_allow_register_threads="yes",,$libdl)
+               	if test "x$found_allow_register_threads" = "xyes"; then
+                        AC_DEFINE(HAVE_GC_ALLOW_REGISTER_THREADS, 1, [GC requires thread registration])
+               	fi
+
 		;;
 
 	xincluded)

mono/metadata/boehm-gc.c

@@ -132,6 +132,10 @@ mono_gc_base_init (void)
 	GC_init_gcj_malloc (5, NULL);
 #endif
 
+#ifdef HAVE_GC_ALLOW_REGISTER_THREADS
+	GC_allow_register_threads();
+#endif
+
 	if ((env = getenv ("MONO_GC_PARAMS"))) {
 		char **ptr, **opts = g_strsplit (env, ",", -1);
 		for (ptr = opts; *ptr; ++ptr) {