patch-src_hidapi_CMakeLists.txt

--- src/hidapi/CMakeLists.txt.orig	2020-03-21 10:55:51 UTC
+++ src/hidapi/CMakeLists.txt
@@ -1,8 +1,9 @@
-
 if (WIN32)
     set(HIDAPI_IMPL win/hid.c)
 elseif (APPLE)
     set(HIDAPI_IMPL mac/hid.c)
+elseif (CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
+	set(HIDAPI_IMPL libusb/hid.c)
 else ()
     # Assume Linux or Unix other than Mac OS
     set(HIDAPI_IMPL linux/hid.c)
@@ -16,4 +17,6 @@ if (CMAKE_SYSTEM_NAME STREQUAL "Linux")
 	# Don't link the udev library, as there are two versions out there (libudev.so.0, libudev.so.1), so they are linked explicitely.
 #	target_link_libraries(hidapi udev)
 	target_link_libraries(hidapi dl)
+elseif (CMAKE_SYSTEM_NAME STREQUAL "FreeBSD")
+	target_link_libraries(hidapi usb iconv)
 endif()