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-rw-r--r--ports/esp8266/Makefile3
1 files changed, 3 insertions, 0 deletions
diff --git a/ports/esp8266/Makefile b/ports/esp8266/Makefile
index 8af7aba0a..1b9e9623b 100644
--- a/ports/esp8266/Makefile
+++ b/ports/esp8266/Makefile
@@ -96,6 +96,9 @@ COPT += -Os -DNDEBUG
LDFLAGS += --gc-sections
endif
+# Flags for optional C++ source code
+CXXFLAGS += $(filter-out -Wmissing-prototypes -Wold-style-definition -std=gnu99,$(CFLAGS))
+
# Options for mpy-cross
MPY_CROSS_FLAGS += -march=xtensa