--- a/Makefile
+++ b/Makefile
@@ -1,3 +1,4 @@
+PKG_CONFIG ?= pkg-config
 CC=gcc
 #CC=gcc-3.1
 UTILS = utilities/hex-to-char utilities/char-to-hex
@@ -14,7 +15,7 @@ pedantic: $(APP)
 utils: $(UTILS)
 
 lib: $(LIBRARY)
-	$(CC) $(CFLAGS) -lm `libusb-config --libs` -shared -Wl,-soname,${LIB} -o ${LIB} $(LIBRARY)
+	$(CC) $(CFLAGS) -lm `$(PKG_CONFIG) --libs libusb` -shared -Wl,-soname,${LIB} -o ${LIB} $(LIBRARY)
 
 docs: libnetmd.h
 	doxygen Doxyfile
@@ -28,4 +29,4 @@ libnetmd.o: libnetmd.c libnetmd.h libnet
 	$(CC) -c ${INCLUDE} ${CFLAGS} -fPIC $<
 
 netmd: netmd.c libnetmd.c libnetmd.h libnetmd_secure.c
-	$(CC) $(PEDANTIC) -g -o netmd netmd.c libnetmd.c libnetmd_secure.c `libusb-config --libs`
+	$(CC) $(PEDANTIC) -g -o netmd netmd.c libnetmd.c libnetmd_secure.c `$(PKG_CONFIG) --libs libusb`