Index: sispmctl-3.1/configure.in
===================================================================
--- sispmctl-3.1.orig/configure.in
+++ sispmctl-3.1/configure.in
@@ -25,29 +25,7 @@ AC_SUBST(BINDADDR)
 
 
 # Checks for libraries.
-dnl check for libusb-config
-AC_PATH_PROG(HAVELIBUSB, libusb-config, $PATH)
-
-if test -e "$HAVELIBUSB"; then
-   dnl   LIBUSB_CFLAGS=`$HAVELIBUSB --cflags`
-   LIBUSB_LIBS=`$HAVELIBUSB --libs`
-   CFLAGS="$CFLAGS $LIBUSB_CFLAGS"
-   LIBS="$LIBS $LIBUSB_LIBS"
-else
-   AC_MSG_ERROR([*** libusb-config not found. You need a working libusb installation. Version >=0.1.7])
-fi
-
-dnl check for version of libusb
-AC_MSG_CHECKING([if libusb version is >= 0.1.9])
-libusb_version_needed="1009"
-libusb_version=`$HAVELIBUSB --version | sed -e "s/libusb //" | awk 'BEGIN { FS = "."; } { printf "%d", ($''1 * 1000 + $''2) * 1000 + $''3;}'`
-
-if test $libusb_version -lt $libusb_version_needed; then
-   AC_MSG_RESULT(no)
-   AC_MSG_ERROR([*** libusb is too old ($libusb_version). You need a libusb installation newer or equal to 0.1.9.])
-else
-   AC_MSG_RESULT(yes)
-fi
+PKG_CHECK_MODULES(LIBUSB, libusb >= 0.1.9)
 
 # Checks for header files.
 AC_HEADER_STDC
Index: sispmctl-3.1/src/Makefile.am
===================================================================
--- sispmctl-3.1.orig/src/Makefile.am
+++ sispmctl-3.1/src/Makefile.am
@@ -4,6 +4,7 @@ EXTRA_DIST =  web1/index.html web1/off1.
 	web2/index.html web2/off1.html web2/off3.html web2/on1.html web2/on3.html web2/style.css web2/logo.png web2/off2.html web2/off4.html web2/on2.html web2/on4.html web2/off.gif web2/on.gif web2/onoff.gif\
 	sispmctl.1 
 
+sispmctl_LDADD = $(LIBUSB_LIBS)
 if WEBLESSCOND
 AM_CFLAGS=-Wall -DWEBLESS=@WEBLESS@