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-rw-r--r--LUFA/Build/LUFA/lufa-sources.mk5
1 files changed, 5 insertions, 0 deletions
diff --git a/LUFA/Build/LUFA/lufa-sources.mk b/LUFA/Build/LUFA/lufa-sources.mk
index 7ca9a28dc..b18be5388 100644
--- a/LUFA/Build/LUFA/lufa-sources.mk
+++ b/LUFA/Build/LUFA/lufa-sources.mk
@@ -6,6 +6,9 @@
# www.lufa-lib.org
#
+# Include Guard
+ifeq ($(filter LUFA_SOURCES, $(DMBS_BUILD_MODULES)),)
+
DMBS_BUILD_MODULES += LUFA_SOURCES
DMBS_BUILD_TARGETS +=
DMBS_BUILD_MANDATORY_VARS += LUFA_PATH ARCH
@@ -93,3 +96,5 @@ LUFA_SRC_ALL_FILES := $(LUFA_SRC_USB) \
$(LUFA_SRC_SERIAL) \
$(LUFA_SRC_TWI) \
$(LUFA_SRC_PLATFORM)
+
+endif