diff --git a/configure.in b/configure.in
index f5e59ae4f59..0b6bdf9fd73 100644
--- a/configure.in
+++ b/configure.in
@@ -2053,6 +2053,7 @@ case "$target" in
     else
         MOZ_OPTIMIZE_FLAGS="-O3 -fno-omit-frame-pointer"
     fi
+    MOZ_MEMORY=1
     _PEDANTIC=
     CFLAGS="$CFLAGS -fno-common"
     CXXFLAGS="$CXXFLAGS -fno-common"