--- Makefile.orig	2025-09-12 00:49:22 UTC
+++ Makefile
@@ -13,7 +13,8 @@
 .PHONY: clean clobber help hclibs
 
 # build flags common to all options and architectures
-CXXFLAGS = -IArduinoLib -IwsServer/include -Izlib-hc -I. -g -O2 -Wall -pthread -std=c++17
+CXXFLAGS ?= -g -O2 -Wall
+CXXFLAGS += -IArduinoLib -I. -DARDUINO=100 -std=c++0x
 # CXXFLAGS += -Wextra -pedantic -Werror -Wno-attributes -Wno-unknown-pragmas
 
 # add explicit framebuffer depth as _FB_DEPTH if defined
@@ -28,7 +29,7 @@ LIBS = -lpthread -larduino -lzlib-hc -lws
 
 LDXXFLAGS = -LArduinoLib -LwsServer -Lzlib-hc -g -pthread
 LIBS = -lpthread -larduino -lzlib-hc -lws
-CXX = g++
+CXX ?= g++
 
 # macOS does not have X11 by default; this assumes XQuartz or macports xorg has been installed
 ifeq ($(shell uname -s), Darwin)