configure.ac: Support FreeBSD libusb which doesn't have libusb-1.0.pc
diff --git a/configure.ac b/configure.ac
index 04bd80c..73bfc03 100644
--- a/configure.ac
+++ b/configure.ac
@@ -345,6 +345,11 @@ PKG_PROG_PKG_CONFIG()
if test "x$ztex" != xno; then
case $target in
+ *-*-freebsd*)
+ LIBUSB_LIBS="-lusb"
+ LIBUSB_CFLAGS=""
+ AC_DEFINE(HAVE_LIBUSB, 1, [Define if you have libusb-1.0])
+ ;;
*)
PKG_CHECK_MODULES(LIBUSB, libusb-1.0, [AC_DEFINE(HAVE_LIBUSB, 1, [Define if you have libusb-1.0])], [AC_MSG_ERROR([Could not find usb library - please install libusb-1.0])])
;;