--- Makefile.cmdline.orig	2020-10-12 22:23:10 UTC
+++ Makefile.cmdline
@@ -8,8 +8,7 @@ DUKTAPE_SOURCES = src/duktape.c
 CMDLINE_SOURCES = \
 	examples/cmdline/duk_cmdline.c
 
-CC = gcc
-CCOPTS = -Os -pedantic -std=c99 -Wall -fstrict-aliasing -fomit-frame-pointer
+CCOPTS = ${CFLAGS} -pedantic -Wall -fstrict-aliasing -fomit-frame-pointer
 CCOPTS += -I./examples/cmdline -I./src   # duktape.h and duk_config.h must be in include path
 CCLIBS = -lm