fix(esptool_py): Fix generating binary error when disable rom print

dongheng · dongheng · commit 286abed96cc7 · 2019-05-13T09:50:41.000+08:00
diff --git a/components/esptool_py/Makefile.projbuild b/components/esptool_py/Makefile.projbuild
@@ -49,7 +49,7 @@ ESPTOOL_ELF2IMAGE_OPTIONS :=
 endif
 
 ifdef CONFIG_DISABLE_ROM_UART_PRINT
-ESPTOOL_ELF2IMAGE_OPTIONS := $(ESPTOOL_FLASH_OPTIONS) --rom_print 0
+ESPTOOL_ELF2IMAGE_OPTIONS += --rom_print 0
 endif
 
 ESPTOOLPY_WRITE_FLASH=$(ESPTOOLPY_SERIAL) write_flash $(if $(CONFIG_ESPTOOLPY_COMPRESSED),-z,-u) $(ESPTOOL_WRITE_FLASH_OPTIONS)
