Partial port of the server to OpenBSD and NetBSD/i386.

configure.in

@@ -23,10 +23,10 @@ AC_ARG_ENABLE(debug,
 AC_MSG_RESULT($debug)
 
 if test $debug = "yes"; then
-dnl Enable debugging information
-	CFLAGS="-g"
+dnl Enable debugging information with minimal optimisation
+	CFLAGS="-g -O"
 else
-dnl Maximum optimization
+dnl Maximum optimisation
 	CFLAGS="-O3"
 fi
 CFLAGS="-Wall $CFLAGS"
@@ -65,10 +65,16 @@ AC_CHECK_LIB(kvm, kvm_open,[
    fi
 ])
 
+dnl NetBSD, OpenBSD and FreeBSD
+AC_CHECK_HEADERS(sched.h sys/types.h machine/pio.h machine/sysarch.h)
+AC_CHECK_LIB(i386, i386_get_ioperm)
+ETR_SYSV_IPC
+ETR_UNION_SEMUN
+
 dnl Checks for header files.
 AC_HEADER_DIRENT
 AC_HEADER_STDC
-AC_CHECK_HEADERS(fcntl.h sys/ioctl.h sys/time.h unistd.h)
+AC_CHECK_HEADERS(fcntl.h sys/ioctl.h sys/time.h unistd.h sys/io.h)
 
 dnl Check for particular preprocessor macros