--- a/drivers/Makefile.am.org	2007-10-01 16:06:24.000000000 +0300
+++ a/drivers/Makefile.am	2008-01-09 02:13:09.000000000 +0200
@@ -125,7 +125,7 @@
 tripplite_usb_LDADD = $(LDADD_DRIVERS) $(LIBUSB_LDFLAGS) -lm
 
 bcmxcp_usb_SOURCES = bcmxcp_usb.c bcmxcp.c nut_usb.c
-bcmxcp_usb_LDADD = $(LDADD_DRIVERS) $(LIBUSB_LDFLAGS)
+bcmxcp_usb_LDADD = $(LDADD_DRIVERS) $(LIBUSB_LDFLAGS) -lm
 
 megatec_usb_SOURCES = megatec.c megatec_usb.c libusb.c
 megatec_usb_CFLAGS = $(AM_CFLAGS) -DMEGATEC_SUBDRV
--- a/drivers/Makefile.am.org	2008-01-09 02:14:32.000000000 +0200
+++ a/drivers/Makefile.am	2008-01-09 02:17:37.000000000 +0200
@@ -67,6 +67,7 @@
 al175_SOURCES = al175.c
 apcsmart_SOURCES = apcsmart.c
 bcmxcp_SOURCES = bcmxcp.c bcmxcp_ser.c
+bcmxcp_LDADD = $(LDADD) -lm
 belkin_SOURCES = belkin.c
 belkinunv_SOURCES = belkinunv.c
 bestfcom_SOURCES = bestfcom.c