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-rw-r--r--ports/atmel-samd/Makefile2
1 files changed, 1 insertions, 1 deletions
diff --git a/ports/atmel-samd/Makefile b/ports/atmel-samd/Makefile
index 29377dc60..041f1d1ad 100644
--- a/ports/atmel-samd/Makefile
+++ b/ports/atmel-samd/Makefile
@@ -95,7 +95,7 @@ endif
ifeq ($(DEBUG), 1)
# Turn on Python modules useful for debugging (e.g. uheap, ustack).
CFLAGS += -ggdb
- #CFLAGS += -flto
+ CFLAGS += -flto
ifeq ($(CHIP_FAMILY), samd21)
CFLAGS += -DENABLE_MICRO_TRACE_BUFFER
endif