1 files changed, 5 insertions, 1 deletions
diff --git a/gcc/configure.ac b/gcc/configure.ac
index b076ad20129..3cad882f947 100644
--- a/gcc/configure.ac
+++ b/gcc/configure.ac
@@ -3027,9 +3027,13 @@ AC_ARG_WITH(gc,
 [  --with-gc={page,zone}   choose the garbage collection mechanism to use
                           with the compiler],
 [case "$withval" in
-  page | zone)
+  page)
     GGC=ggc-$withval
     ;;
+  zone)
+    GGC=ggc-$withval
+    AC_DEFINE(GGC_ZONE, 1, [Define if the zone collector is in use])
+    ;;
   *)
     AC_MSG_ERROR([$withval is an invalid option to --with-gc])
     ;;