-Wswitch-enum \
-Wundef \
-Wunreachable-code \
- -Wunsafe-loop-optimizations \
-Wwrite-strings
-CFLAGS += $(shell pkg-config --cflags libusb-1.0)
+ifneq ($(CC),clang)
+ CFLAGS += -Wunsafe-loop-optimizations
+endif
+
+CFLAGS += $(shell pkg-config --cflags libusb-1.0)
LDLIBS += $(shell pkg-config --libs libusb-1.0)
PREFIX ?= /usr/local