2 files changed, 8 insertions, 1 deletions
diff --git a/examples/natmod/framebuf/Makefile b/examples/natmod/framebuf/Makefile
index 2e2b815975..cb821736e7 100644
--- a/examples/natmod/framebuf/Makefile
+++ b/examples/natmod/framebuf/Makefile
@@ -8,6 +8,10 @@ MOD = framebuf_$(ARCH)
 SRC = framebuf.c
 
 # Architecture to build for (x86, x64, armv7m, xtensa, xtensawin)
-ARCH = x64
+ARCH ?= x64
+
+ifeq ($(ARCH),xtensa)
+MPY_EXTERN_SYM_FILE=$(MPY_DIR)/ports/esp8266/boards/eagle.rom.addr.v6.ld
+endif
 
 include $(MPY_DIR)/py/dynruntime.mk
diff --git a/examples/natmod/framebuf/framebuf.c b/examples/natmod/framebuf/framebuf.c
index 1ba702e33d..5fd7c6be3a 100644
--- a/examples/natmod/framebuf/framebuf.c
+++ b/examples/natmod/framebuf/framebuf.c
@@ -4,6 +4,9 @@
 #include "py/dynruntime.h"
 
 #if !defined(__linux__)
+void *memcpy(void *dst, const void *src, size_t n) {
+    return mp_fun_table.memmove_(dst, src, n);
+}
 void *memset(void *s, int c, size_t n) {
     return mp_fun_table.memset_(s, c, n);
 }