diff --git a/config/bootstrap-asan.mk b/config/bootstrap-asan.mk
new file mode 100644
index 00000000000..d37a9da6bbf
--- /dev/null
+++ b/config/bootstrap-asan.mk
@@ -0,0 +1,6 @@
+# This option enables -fsanitize=address for stage2 and stage3.
+
+STAGE2_CFLAGS += -fsanitize=address
+STAGE3_CFLAGS += -fsanitize=address
+POSTSTAGE1_LDFLAGS += -fsanitize=address -static-libasan \
+		      -B$$r/prev-$(TARGET_SUBDIR)/libsanitizer/asan/.libs