--- a/drivers/Makefile.am
+++ b/drivers/Makefile.am
@@ -171,7 +171,7 @@ tripplite_usb_SOURCES = tripplite_usb.c
 tripplite_usb_LDADD = $(LDADD_DRIVERS) $(LIBUSB_LIBS) -lm
 
 bcmxcp_usb_SOURCES = bcmxcp_usb.c bcmxcp.c usb-common.c
-bcmxcp_usb_LDADD = $(LDADD_DRIVERS) $(LIBUSB_LIBS)
+bcmxcp_usb_LDADD = $(LDADD_DRIVERS) $(LIBUSB_LIBS) -lm
 
 blazer_usb_SOURCES = blazer.c blazer_usb.c libusb.c usb-common.c
 blazer_usb_LDADD = $(LDADD_DRIVERS) $(LIBUSB_LIBS) -lm
--- a/drivers/Makefile.in
+++ b/drivers/Makefile.in
@@ -785,7 +785,7 @@ usbhid_ups_LDADD = $(LDADD_DRIVERS) $(LI
 tripplite_usb_SOURCES = tripplite_usb.c libusb.c usb-common.c
 tripplite_usb_LDADD = $(LDADD_DRIVERS) $(LIBUSB_LIBS) -lm
 bcmxcp_usb_SOURCES = bcmxcp_usb.c bcmxcp.c usb-common.c
-bcmxcp_usb_LDADD = $(LDADD_DRIVERS) $(LIBUSB_LIBS)
+bcmxcp_usb_LDADD = $(LDADD_DRIVERS) $(LIBUSB_LIBS) -lm
 blazer_usb_SOURCES = blazer.c blazer_usb.c libusb.c usb-common.c
 blazer_usb_LDADD = $(LDADD_DRIVERS) $(LIBUSB_LIBS) -lm
 nutdrv_atcl_usb_SOURCES = nutdrv_atcl_usb.c usb-common.c