$NetBSD: patch-ad,v 1.1.1.1 2008/06/21 23:15:28 adrianp Exp $

--- configure.orig	2008-05-06 02:33:33.000000000 +0100
+++ configure
@@ -6550,6 +6550,8 @@ case $host in
 	use_threads=false ;;
 *-freebsd*)
 	use_threads=false ;;
+*-dragonfly*)
+	use_threads=false ;;
 *-bsdi234*)
 	# Thread signals do not work reliably on some versions of BSD/OS.
 	use_threads=false ;;
@@ -6638,7 +6640,7 @@ echo "$as_me: WARNING: linking with PTL2
 echo "${ECHO_T}native" >&6; }
 				LIBS="-lpthread $LIBS"
 			else
-				if test ! -d $LOCALBASE/pthreads
+				if test ! -d $LOCALBASE/pthreads -a ! -f /usr/include/pthread.h
 				then
 					{ echo "$as_me:$LINENO: result: none" >&5
 echo "${ECHO_T}none" >&6; }
@@ -6649,14 +6651,23 @@ echo "$as_me: error: \"could not find th
 
 				if $use_threads
 				then
-					{ echo "$as_me:$LINENO: result: mit-pthreads/unproven-pthreads" >&5
+					if test -f /usr/include/pthread.h
+					then
+						{ echo "$as_me:$LINENO: result: native pthreads" >&5
+echo "${ECHO_T}native pthreads" >&6; }
+						LIBS="-lpthread $LIBS"
+						CPPFLAGS="$CPPFLAGS -I/usr/include"
+						STD_CINDLUES="$STD_CINDLUES -I/usr/include"
+					else
+						{ echo "$as_me:$LINENO: result: mit-pthreads/unproven-pthreads" >&5
 echo "${ECHO_T}mit-pthreads/unproven-pthreads" >&6; }
-					pkg="$LOCALBASE/pthreads"
-					lib1="-L$pkg/lib -Wl,-R$pkg/lib"
-					lib2="-lpthread -lm -lgcc -lpthread"
-					LIBS="$lib1 $lib2 $LIBS"
-					CPPFLAGS="$CPPFLAGS -I$pkg/include"
-					STD_CINCLUDES="$STD_CINCLUDES -I$pkg/include"
+						pkg="$LOCALBASE/pthreads"
+						lib1="-L$pkg/lib -Wl,-R$pkg/lib"
+						lib2="-lpthread -lm -lgcc -lpthread"
+						LIBS="$lib1 $lib2 $LIBS"
+						CPPFLAGS="$CPPFLAGS -I$pkg/include"
+						STD_CINCLUDES="$STD_CINCLUDES -I$pkg/include"
+					fi
 				fi
 			fi
 		fi