--- Makefile.orig	2020-07-20 20:23:20.000000000 -0400
+++ Makefile	2020-07-20 20:23:56.000000000 -0400
@@ -99,8 +99,8 @@
 #
 ifeq ($(OS),Darwin)
 COMMON_SRCS+=PosixSerialPort.cpp OSXPortFactory.cpp
-COMMON_CXXFLAGS=-arch x86_64 -mmacosx-version-min=10.9
-COMMON_LDFLAGS=-arch x86_64 -mmacosx-version-min=10.9
+COMMON_CXXFLAGS=
+COMMON_LDFLAGS=
 APP=BOSSA.app
 DMG=bossa-$(VERSION).dmg
 VOLUME=BOSSA