$OpenBSD: patch-configure_ac,v 1.1.1.1 2018/06/18 23:37:01 thfr Exp $

add openbsd as recognized platform
use linux backend
disable hidraw component which checks for udev
remove librt check

Index: configure.ac
--- configure.ac.orig
+++ configure.ac
@@ -53,7 +53,7 @@ hidapi_prog_error() {
 AC_MSG_CHECKING([operating system])
 AC_MSG_RESULT($host)
 case $host in
-*-linux*)
+*-linux* | *-openbsd*)
 	AC_MSG_RESULT([ (Linux back-end)])
 	AC_DEFINE(OS_LINUX, 1, [Linux implementations])
 	AC_SUBST(OS_LINUX)
@@ -61,13 +61,7 @@ case $host in
 	os="linux"
 	threads="pthreads"
 
-	# HIDAPI/hidraw libs
-	PKG_CHECK_MODULES([libudev], [libudev], true, [hidapi_lib_error libudev])
-	LIBS_HIDRAW_PR+=" $libudev_LIBS"
-	CFLAGS_HIDRAW+=" $libudev_CFLAGS"
-
 	# HIDAPI/libusb libs
-	AC_CHECK_LIB([rt], [clock_gettime], [LIBS_LIBUSB_PRIVATE+=" -lrt"], [hidapi_lib_error librt])
 	PKG_CHECK_MODULES([libusb], [libusb-1.0 >= 1.0.9], true, [hidapi_lib_error libusb-1.0])
 	LIBS_LIBUSB_PRIVATE+=" $libusb_LIBS"
 	CFLAGS_LIBUSB+=" $libusb_CFLAGS"
