1# This option enables -fsanitize=undefined for stage2 and stage3. 2 3STAGE2_CFLAGS += -fsanitize=undefined -DUBSAN_BOOTSTRAP 4STAGE3_CFLAGS += -fsanitize=undefined -DUBSAN_BOOTSTRAP 5POSTSTAGE1_LDFLAGS += -fsanitize=undefined -static-libubsan -DUBSAN_BOOTSTRAP \ 6 -B$$r/prev-$(TARGET_SUBDIR)/libsanitizer/ \ 7 -B$$r/prev-$(TARGET_SUBDIR)/libsanitizer/ubsan/ \ 8 -B$$r/prev-$(TARGET_SUBDIR)/libsanitizer/ubsan/.libs 9