$NetBSD: patch-ad,v 1.3 2003/03/10 02:47:38 hubertf Exp $

--- configure.orig	2003-02-18 04:16:23.000000000 +0000
+++ configure
@@ -4739,7 +4924,8 @@ echo "${ECHO_T}PTL2" >&6
 echo "$as_me: WARNING: linking with PTL2 is highly experimental and not expected to work" >&2;}
 			CC=ptlgcc
 		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
@@ -4750,14 +4936,23 @@ 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_CINCLUDES="$STD_CINCLUDES -I/usr/include"
+				else
+					echo "$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
 		;;