--- src/tun/Makefile.orig
@@ -23,15 +23,15 @@ BUNDLE_VERSION = $(TUN_KEXT_VERSION)
INCLUDE = -I.. -I/System/Library/Frameworks/Kernel.framework/Headers
CFLAGS = -Wall -Werror -mkernel -force_cpusubtype_ALL \
-nostdinc -fno-builtin -fno-stack-protector -msoft-float -fno-common \
-DKERNEL -DAPPLE -DKERNEL_PRIVATE -DTUNTAP_VERSION=\"$(TUNTAP_VERSION)\" \
-DTUN_KEXT_VERSION=\"$(TUN_KEXT_VERSION)\"
-LDFLAGS = -Wall -Werror -arch x86_64 -Xlinker -kext -nostdlib -lkmodc++ -lkmod -lcc_kext
+LDFLAGS = -Wall -Werror @ARCHFLAGS@ -Xlinker -kext -nostdlib -lkmodc++ -lkmod -lcc_kext