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-rw-r--r--extmod/btstack/btstack.mk3
1 files changed, 3 insertions, 0 deletions
diff --git a/extmod/btstack/btstack.mk b/extmod/btstack/btstack.mk
index fe3a05272..dd96e6337 100644
--- a/extmod/btstack/btstack.mk
+++ b/extmod/btstack/btstack.mk
@@ -14,6 +14,8 @@ CFLAGS_MOD += -DMICROPY_BLUETOOTH_BTSTACK=1
BTSTACK_DIR = $(TOP)/lib/btstack
+ifneq ($(wildcard $(BTSTACK_DIR)/src),)
+
include $(BTSTACK_DIR)/src/Makefile.inc
include $(BTSTACK_DIR)/src/ble/Makefile.inc
@@ -52,3 +54,4 @@ endif
$(BUILD)/lib/btstack/src/%.o: CFLAGS += $(BTSTACK_WARNING_CFLAGS)
endif
+endif