$OpenBSD: patch-configure_ac,v 1.5 2010/07/25 17:14:35 jolan Exp $
--- configure.ac.orig	Thu Apr  1 01:31:35 2010
+++ configure.ac	Fri Apr  9 21:23:26 2010
@@ -230,7 +230,7 @@ fi
 AC_MSG_RESULT([$ac_ff_effect_directional])
 
 case $host_os in
-     linux*|kfreebsd*|freebsd*|netbsd*|dragonfly*) linux=true;;
+     linux*|kfreebsd*|freebsd*|netbsd*|openbsd*|dragonfly*) linux=true;;
      *) linux=false;;
 esac
 AM_CONDITIONAL(LINUX, $linux)
@@ -685,7 +685,7 @@ esac
 if test x$enable_debug = xyes ; then
    FLAGS="$FLAGS -O0"
    case $host_os in
-     linux*|cygwin|mingw32*)
+     linux*|openbsd*|cygwin|mingw32*)
 	FLAGS="$FLAGS -Werror -Wshadow"
 	if test x$enable_profiling = xyes ; then
 	  FLAGS="$FLAGS -pg"
@@ -703,7 +703,7 @@ if test x$enable_debug = xyes ; then
     AC_DEFINE(DEBUG, 1, [Debugging enabled])
 else
     case $host_os in
-	linux*|cygwin|mingw32*)
+	linux*|openbsd*|cygwin|mingw32*)
 	    FLAGS="$FLAGS -ffast-math -fno-exceptions"
 	    ;;
 	solaris*)