diff --git a/configure b/configure
index 3d5f240777..ba41a33c99 100755
--- a/configure
+++ b/configure
@@ -15,7 +15,7 @@
 # NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
 # WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 
-# From configure.in Revision: 1.185 
+# From configure.in Revision: 1.186 
 
 ## libtool.m4 - Configure libtool for the target system. -*-Shell-script-*-
 ## Copyright (C) 1996-1999 Free Software Foundation, Inc.
@@ -1056,13 +1056,20 @@ case "$enable_threads" in
 	yes|'')
 		echo "$ac_t""yes" 1>&6
 		use_threads=true
-		ISC_PLATFORM_USETHREADS="#define ISC_PLATFORM_USETHREADS 1" ;;
+		ISC_PLATFORM_USETHREADS="#define ISC_PLATFORM_USETHREADS 1"
+		;;
 	no)
 		echo "$ac_t""no" 1>&6	
 		use_threads=false
-		ISC_PLATFORM_USETHREADS="#undef ISC_PLATFORM_USETHREADS" ;;
+#ifdef ISC_PLATFORM_USETHREADS
+		ISC_PLATFORM_USETHREADS="#undef ISC_PLATFORM_USETHREADS"
+#else /* ISC_PLATFORM_USETHREADS */
+#+		AC_MSG_ERROR(["--enable-threads is not implemented"])
+#endif /* ISC_PLATFORM_USETHREADS */
+		;;
 	*)
-	    	{ echo "configure: error: "--enable-threads takes yes or no"" 1>&2; exit 1; } ;;
+	    	{ echo "configure: error: "--enable-threads takes yes or no"" 1>&2; exit 1; }
+		;;
 esac
 
 
@@ -1116,14 +1123,14 @@ fi
 # Find the machine's endian flavor.
 #
 echo $ac_n "checking whether byte ordering is bigendian""... $ac_c" 1>&6
-echo "configure:1120: checking whether byte ordering is bigendian" >&5
+echo "configure:1127: checking whether byte ordering is bigendian" >&5
 if eval "test \"`echo '$''{'ac_cv_c_bigendian'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_cv_c_bigendian=unknown
 # See if sys/param.h defines the BYTE_ORDER macro.
 cat > conftest.$ac_ext <<EOF
-#line 1127 "configure"
+#line 1134 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/param.h>
@@ -1134,11 +1141,11 @@ int main() {
 #endif
 ; return 0; }
 EOF
-if { (eval echo configure:1138: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1145: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   # It does; now see whether it defined to BIG_ENDIAN or not.
 cat > conftest.$ac_ext <<EOF
-#line 1142 "configure"
+#line 1149 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/param.h>
@@ -1149,7 +1156,7 @@ int main() {
 #endif
 ; return 0; }
 EOF
-if { (eval echo configure:1153: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1160: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_bigendian=yes
 else
@@ -1169,7 +1176,7 @@ if test "$cross_compiling" = yes; then
     { echo "configure: error: can not run test program while cross compiling" 1>&2; exit 1; }
 else
   cat > conftest.$ac_ext <<EOF
-#line 1173 "configure"
+#line 1180 "configure"
 #include "confdefs.h"
 main () {
   /* Are we little or big endian?  From Harbison&Steele.  */
@@ -1182,7 +1189,7 @@ main () {
   exit (u.c[sizeof (long) - 1] == 1);
 }
 EOF
-if { (eval echo configure:1186: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1193: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   ac_cv_c_bigendian=no
 else
@@ -1210,7 +1217,7 @@ fi
 # was --with-openssl specified?
 #
 echo $ac_n "checking for compatible OpenSSL library""... $ac_c" 1>&6
-echo "configure:1214: checking for compatible OpenSSL library" >&5
+echo "configure:1221: checking for compatible OpenSSL library" >&5
 # Check whether --with-openssl or --without-openssl was given.
 if test "${with_openssl+set}" = set; then
   withval="$with_openssl"
@@ -1267,7 +1274,7 @@ esac
 # was --with-gssapi specified?
 #
 echo $ac_n "checking for GSSAPI library""... $ac_c" 1>&6
-echo "configure:1271: checking for GSSAPI library" >&5
+echo "configure:1278: checking for GSSAPI library" >&5
 # Check whether --with-gssapi or --without-gssapi was given.
 if test "${with_gssapi+set}" = set; then
   withval="$with_gssapi"
@@ -1303,7 +1310,7 @@ esac
 # was --with-randomdev specified?
 #
 echo $ac_n "checking for random device""... $ac_c" 1>&6
-echo "configure:1307: checking for random device" >&5
+echo "configure:1314: checking for random device" >&5
 # Check whether --with-randomdev or --without-randomdev was given.
 if test "${with_randomdev+set}" = set; then
   withval="$with_randomdev"
@@ -1350,7 +1357,7 @@ esac
 # Extract the first word of "gcc", so it can be a program name with args.
 set dummy gcc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1354: checking for $ac_word" >&5
+echo "configure:1361: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1380,7 +1387,7 @@ if test -z "$CC"; then
   # Extract the first word of "cc", so it can be a program name with args.
 set dummy cc; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1384: checking for $ac_word" >&5
+echo "configure:1391: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1431,7 +1438,7 @@ fi
       # Extract the first word of "cl", so it can be a program name with args.
 set dummy cl; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1435: checking for $ac_word" >&5
+echo "configure:1442: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_CC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1463,7 +1470,7 @@ fi
 fi
 
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works""... $ac_c" 1>&6
-echo "configure:1467: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
+echo "configure:1474: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) works" >&5
 
 ac_ext=c
 # CFLAGS is not in ac_cpp because -g, -O, etc. are not valid cpp options.
@@ -1474,12 +1481,12 @@ cross_compiling=$ac_cv_prog_cc_cross
 
 cat > conftest.$ac_ext << EOF
 
-#line 1478 "configure"
+#line 1485 "configure"
 #include "confdefs.h"
 
 main(){return(0);}
 EOF
-if { (eval echo configure:1483: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:1490: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   ac_cv_prog_cc_works=yes
   # If we can't run a trivial program, we are probably using a cross compiler.
   if (./conftest; exit) 2>/dev/null; then
@@ -1505,12 +1512,12 @@ if test $ac_cv_prog_cc_works = no; then
   { echo "configure: error: installation or configuration problem: C compiler cannot create executables." 1>&2; exit 1; }
 fi
 echo $ac_n "checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler""... $ac_c" 1>&6
-echo "configure:1509: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
+echo "configure:1516: checking whether the C compiler ($CC $CFLAGS $LDFLAGS) is a cross-compiler" >&5
 echo "$ac_t""$ac_cv_prog_cc_cross" 1>&6
 cross_compiling=$ac_cv_prog_cc_cross
 
 echo $ac_n "checking whether we are using GNU C""... $ac_c" 1>&6
-echo "configure:1514: checking whether we are using GNU C" >&5
+echo "configure:1521: checking whether we are using GNU C" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gcc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1519,7 +1526,7 @@ else
   yes;
 #endif
 EOF
-if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:1523: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
+if { ac_try='${CC-cc} -E conftest.c'; { (eval echo configure:1530: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }; } | egrep yes >/dev/null 2>&1; then
   ac_cv_prog_gcc=yes
 else
   ac_cv_prog_gcc=no
@@ -1538,7 +1545,7 @@ ac_test_CFLAGS="${CFLAGS+set}"
 ac_save_CFLAGS="$CFLAGS"
 CFLAGS=
 echo $ac_n "checking whether ${CC-cc} accepts -g""... $ac_c" 1>&6
-echo "configure:1542: checking whether ${CC-cc} accepts -g" >&5
+echo "configure:1549: checking whether ${CC-cc} accepts -g" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_cc_g'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1574,7 +1581,7 @@ do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2
 echo $ac_n "checking for $ac_word""... $ac_c" 1>&6
-echo "configure:1578: checking for $ac_word" >&5
+echo "configure:1585: checking for $ac_word" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_YACC'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -1606,7 +1613,7 @@ test -n "$YACC" || YACC="yacc"
 
 
 echo $ac_n "checking how to run the C preprocessor""... $ac_c" 1>&6
-echo "configure:1610: checking how to run the C preprocessor" >&5
+echo "configure:1617: checking how to run the C preprocessor" >&5
 # On Suns, sometimes $CPP names a directory.
 if test -n "$CPP" && test -d "$CPP"; then
   CPP=
@@ -1621,13 +1628,13 @@ else
   # On the NeXT, cc -E runs the code through the compiler's parser,
   # not just through cpp.
   cat > conftest.$ac_ext <<EOF
-#line 1625 "configure"
+#line 1632 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1631: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1638: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -1638,13 +1645,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -E -traditional-cpp"
   cat > conftest.$ac_ext <<EOF
-#line 1642 "configure"
+#line 1649 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1648: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1655: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -1655,13 +1662,13 @@ else
   rm -rf conftest*
   CPP="${CC-cc} -nologo -E"
   cat > conftest.$ac_ext <<EOF
-#line 1659 "configure"
+#line 1666 "configure"
 #include "confdefs.h"
 #include <assert.h>
 Syntax Error
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1665: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1672: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   :
@@ -1686,12 +1693,12 @@ fi
 echo "$ac_t""$CPP" 1>&6
 
 echo $ac_n "checking for ANSI C header files""... $ac_c" 1>&6
-echo "configure:1690: checking for ANSI C header files" >&5
+echo "configure:1697: checking for ANSI C header files" >&5
 if eval "test \"`echo '$''{'ac_cv_header_stdc'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1695 "configure"
+#line 1702 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 #include <stdarg.h>
@@ -1699,7 +1706,7 @@ else
 #include <float.h>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1703: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1710: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1716,7 +1723,7 @@ rm -f conftest*
 if test $ac_cv_header_stdc = yes; then
   # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 1720 "configure"
+#line 1727 "configure"
 #include "confdefs.h"
 #include <string.h>
 EOF
@@ -1734,7 +1741,7 @@ fi
 if test $ac_cv_header_stdc = yes; then
   # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
 cat > conftest.$ac_ext <<EOF
-#line 1738 "configure"
+#line 1745 "configure"
 #include "confdefs.h"
 #include <stdlib.h>
 EOF
@@ -1755,7 +1762,7 @@ if test "$cross_compiling" = yes; then
   :
 else
   cat > conftest.$ac_ext <<EOF
-#line 1759 "configure"
+#line 1766 "configure"
 #include "confdefs.h"
 #include <ctype.h>
 #define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
@@ -1766,7 +1773,7 @@ if (XOR (islower (i), ISLOWER (i)) || toupper (i) != TOUPPER (i)) exit(2);
 exit (0); }
 
 EOF
-if { (eval echo configure:1770: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:1777: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   :
 else
@@ -1794,17 +1801,17 @@ for ac_hdr in fcntl.h sys/time.h unistd.h sys/sockio.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:1798: checking for $ac_hdr" >&5
+echo "configure:1805: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1803 "configure"
+#line 1810 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:1808: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:1815: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -1832,12 +1839,12 @@ done
 
 
 echo $ac_n "checking for working const""... $ac_c" 1>&6
-echo "configure:1836: checking for working const" >&5
+echo "configure:1843: checking for working const" >&5
 if eval "test \"`echo '$''{'ac_cv_c_const'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1841 "configure"
+#line 1848 "configure"
 #include "confdefs.h"
 
 int main() {
@@ -1886,7 +1893,7 @@ ccp = (char const *const *) p;
 
 ; return 0; }
 EOF
-if { (eval echo configure:1890: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1897: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_const=yes
 else
@@ -1907,21 +1914,21 @@ EOF
 fi
 
 echo $ac_n "checking for inline""... $ac_c" 1>&6
-echo "configure:1911: checking for inline" >&5
+echo "configure:1918: checking for inline" >&5
 if eval "test \"`echo '$''{'ac_cv_c_inline'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   ac_cv_c_inline=no
 for ac_kw in inline __inline__ __inline; do
   cat > conftest.$ac_ext <<EOF
-#line 1918 "configure"
+#line 1925 "configure"
 #include "confdefs.h"
 
 int main() {
 } $ac_kw foo() {
 ; return 0; }
 EOF
-if { (eval echo configure:1925: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:1932: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_c_inline=$ac_kw; break
 else
@@ -1947,12 +1954,12 @@ EOF
 esac
 
 echo $ac_n "checking for size_t""... $ac_c" 1>&6
-echo "configure:1951: checking for size_t" >&5
+echo "configure:1958: checking for size_t" >&5
 if eval "test \"`echo '$''{'ac_cv_type_size_t'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1956 "configure"
+#line 1963 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #if STDC_HEADERS
@@ -1980,12 +1987,12 @@ EOF
 fi
 
 echo $ac_n "checking whether time.h and sys/time.h may both be included""... $ac_c" 1>&6
-echo "configure:1984: checking whether time.h and sys/time.h may both be included" >&5
+echo "configure:1991: checking whether time.h and sys/time.h may both be included" >&5
 if eval "test \"`echo '$''{'ac_cv_header_time'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 1989 "configure"
+#line 1996 "configure"
 #include "confdefs.h"
 #include <sys/types.h>
 #include <sys/time.h>
@@ -1994,7 +2001,7 @@ int main() {
 struct tm *tp;
 ; return 0; }
 EOF
-if { (eval echo configure:1998: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:2005: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   ac_cv_header_time=yes
 else
@@ -2031,7 +2038,7 @@ then
 		# experiment with it.
 		CC="gcc"
 		echo $ac_n "checking which NetBSD thread library to use""... $ac_c" 1>&6
-echo "configure:2035: checking which NetBSD thread library to use" >&5
+echo "configure:2042: checking which NetBSD thread library to use" >&5
 
 		# Check whether --with-ptl2 or --without-ptl2 was given.
 if test "${with_ptl2+set}" = set; then
@@ -2070,7 +2077,7 @@ Please install the devel/unproven-pthreads package and rerun configure.
 		;;
 		*)
 			echo $ac_n "checking for pthread_create in -lpthread""... $ac_c" 1>&6
-echo "configure:2074: checking for pthread_create in -lpthread" >&5
+echo "configure:2081: checking for pthread_create in -lpthread" >&5
 ac_lib_var=`echo pthread'_'pthread_create | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -2078,7 +2085,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lpthread  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2082 "configure"
+#line 2089 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -2089,7 +2096,7 @@ int main() {
 pthread_create()
 ; return 0; }
 EOF
-if { (eval echo configure:2093: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2100: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2115,7 +2122,7 @@ EOF
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for __pthread_create in -lpthread""... $ac_c" 1>&6
-echo "configure:2119: checking for __pthread_create in -lpthread" >&5
+echo "configure:2126: checking for __pthread_create in -lpthread" >&5
 ac_lib_var=`echo pthread'_'__pthread_create | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -2123,7 +2130,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lpthread  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2127 "configure"
+#line 2134 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -2134,7 +2141,7 @@ int main() {
 __pthread_create()
 ; return 0; }
 EOF
-if { (eval echo configure:2138: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2145: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2162,7 +2169,7 @@ else
 fi
 
 			     echo $ac_n "checking for __pthread_create_system in -lpthread""... $ac_c" 1>&6
-echo "configure:2166: checking for __pthread_create_system in -lpthread" >&5
+echo "configure:2173: checking for __pthread_create_system in -lpthread" >&5
 ac_lib_var=`echo pthread'_'__pthread_create_system | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -2170,7 +2177,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lpthread  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2174 "configure"
+#line 2181 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -2181,7 +2188,7 @@ int main() {
 __pthread_create_system()
 ; return 0; }
 EOF
-if { (eval echo configure:2185: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2192: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2209,7 +2216,7 @@ else
 fi
 
 			     echo $ac_n "checking for pthread_create in -lpthreads""... $ac_c" 1>&6
-echo "configure:2213: checking for pthread_create in -lpthreads" >&5
+echo "configure:2220: checking for pthread_create in -lpthreads" >&5
 ac_lib_var=`echo pthreads'_'pthread_create | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -2217,7 +2224,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lpthreads  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2221 "configure"
+#line 2228 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -2228,7 +2235,7 @@ int main() {
 pthread_create()
 ; return 0; }
 EOF
-if { (eval echo configure:2232: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2239: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2264,7 +2271,7 @@ fi
 	# We'd like to use sigwait() too
 	#
 	echo $ac_n "checking for sigwait in -lc""... $ac_c" 1>&6
-echo "configure:2268: checking for sigwait in -lc" >&5
+echo "configure:2275: checking for sigwait in -lc" >&5
 ac_lib_var=`echo c'_'sigwait | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -2272,7 +2279,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lc  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2276 "configure"
+#line 2283 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -2283,7 +2290,7 @@ int main() {
 sigwait()
 ; return 0; }
 EOF
-if { (eval echo configure:2287: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2294: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2305,7 +2312,7 @@ EOF
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for sigwait in -lpthread""... $ac_c" 1>&6
-echo "configure:2309: checking for sigwait in -lpthread" >&5
+echo "configure:2316: checking for sigwait in -lpthread" >&5
 ac_lib_var=`echo pthread'_'sigwait | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -2313,7 +2320,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lpthread  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2317 "configure"
+#line 2324 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -2324,7 +2331,7 @@ int main() {
 sigwait()
 ; return 0; }
 EOF
-if { (eval echo configure:2328: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2335: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2346,7 +2353,7 @@ EOF
 else
   echo "$ac_t""no" 1>&6
 echo $ac_n "checking for _Psigwait in -lpthread""... $ac_c" 1>&6
-echo "configure:2350: checking for _Psigwait in -lpthread" >&5
+echo "configure:2357: checking for _Psigwait in -lpthread" >&5
 ac_lib_var=`echo pthread'_'_Psigwait | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -2354,7 +2361,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lpthread  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2358 "configure"
+#line 2365 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -2365,7 +2372,7 @@ int main() {
 _Psigwait()
 ; return 0; }
 EOF
-if { (eval echo configure:2369: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2376: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2403,7 +2410,7 @@ fi
 		#
 		*-freebsd*)
 			echo $ac_n "checking for sigwait in -lc_r""... $ac_c" 1>&6
-echo "configure:2407: checking for sigwait in -lc_r" >&5
+echo "configure:2414: checking for sigwait in -lc_r" >&5
 ac_lib_var=`echo c_r'_'sigwait | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -2411,7 +2418,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lc_r  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2415 "configure"
+#line 2422 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -2422,7 +2429,7 @@ int main() {
 sigwait()
 ; return 0; }
 EOF
-if { (eval echo configure:2426: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2433: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2477,12 +2484,12 @@ EOF
 EOF
 
 			echo $ac_n "checking for pthread_setconcurrency""... $ac_c" 1>&6
-echo "configure:2481: checking for pthread_setconcurrency" >&5
+echo "configure:2488: checking for pthread_setconcurrency" >&5
 if eval "test \"`echo '$''{'ac_cv_func_pthread_setconcurrency'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2486 "configure"
+#line 2493 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char pthread_setconcurrency(); below.  */
@@ -2505,7 +2512,7 @@ pthread_setconcurrency();
 
 ; return 0; }
 EOF
-if { (eval echo configure:2509: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2516: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_pthread_setconcurrency=yes"
 else
@@ -2543,12 +2550,12 @@ EOF
 	# Look for sysconf to allow detection of the number of processors.
 	#
 	echo $ac_n "checking for sysconf""... $ac_c" 1>&6
-echo "configure:2547: checking for sysconf" >&5
+echo "configure:2554: checking for sysconf" >&5
 if eval "test \"`echo '$''{'ac_cv_func_sysconf'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2552 "configure"
+#line 2559 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char sysconf(); below.  */
@@ -2571,7 +2578,7 @@ sysconf();
 
 ; return 0; }
 EOF
-if { (eval echo configure:2575: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2582: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_sysconf=yes"
 else
@@ -2652,12 +2659,12 @@ ISC_THREAD_DIR=$thread_dir
 # even if compiled with --disable-threads.
 #
 echo $ac_n "checking for flockfile""... $ac_c" 1>&6
-echo "configure:2656: checking for flockfile" >&5
+echo "configure:2663: checking for flockfile" >&5
 if eval "test \"`echo '$''{'ac_cv_func_flockfile'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2661 "configure"
+#line 2668 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char flockfile(); below.  */
@@ -2680,7 +2687,7 @@ flockfile();
 
 ; return 0; }
 EOF
-if { (eval echo configure:2684: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2691: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_flockfile=yes"
 else
@@ -2707,12 +2714,12 @@ fi
 # NLS
 #
 echo $ac_n "checking for catgets""... $ac_c" 1>&6
-echo "configure:2711: checking for catgets" >&5
+echo "configure:2718: checking for catgets" >&5
 if eval "test \"`echo '$''{'ac_cv_func_catgets'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 2716 "configure"
+#line 2723 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char catgets(); below.  */
@@ -2735,7 +2742,7 @@ catgets();
 
 ; return 0; }
 EOF
-if { (eval echo configure:2739: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2746: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_catgets=yes"
 else
@@ -2773,7 +2780,7 @@ case "$host" in
 		;;
 	*)
 		echo $ac_n "checking for socket in -lsocket""... $ac_c" 1>&6
-echo "configure:2777: checking for socket in -lsocket" >&5
+echo "configure:2784: checking for socket in -lsocket" >&5
 ac_lib_var=`echo socket'_'socket | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -2781,7 +2788,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lsocket  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2785 "configure"
+#line 2792 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -2792,7 +2799,7 @@ int main() {
 socket()
 ; return 0; }
 EOF
-if { (eval echo configure:2796: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2803: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2820,7 +2827,7 @@ else
 fi
 
 		echo $ac_n "checking for inet_ntoa in -lnsl""... $ac_c" 1>&6
-echo "configure:2824: checking for inet_ntoa in -lnsl" >&5
+echo "configure:2831: checking for inet_ntoa in -lnsl" >&5
 ac_lib_var=`echo nsl'_'inet_ntoa | sed 'y%./+-%__p_%'`
 if eval "test \"`echo '$''{'ac_cv_lib_$ac_lib_var'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -2828,7 +2835,7 @@ else
   ac_save_LIBS="$LIBS"
 LIBS="-lnsl  $LIBS"
 cat > conftest.$ac_ext <<EOF
-#line 2832 "configure"
+#line 2839 "configure"
 #include "confdefs.h"
 /* Override any gcc2 internal prototype to avoid an error.  */
 /* We use char because int might match the return type of a gcc2
@@ -2839,7 +2846,7 @@ int main() {
 inet_ntoa()
 ; return 0; }
 EOF
-if { (eval echo configure:2843: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:2850: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_lib_$ac_lib_var=yes"
 else
@@ -2991,7 +2998,7 @@ else
 fi
 
 echo $ac_n "checking build system type""... $ac_c" 1>&6
-echo "configure:2995: checking build system type" >&5
+echo "configure:3002: checking build system type" >&5
 
 build_alias=$build
 case "$build_alias" in
@@ -3020,7 +3027,7 @@ ac_prog=ld
 if test "$ac_cv_prog_gcc" = yes; then
   # Check if gcc -print-prog-name=ld gives a path.
   echo $ac_n "checking for ld used by GCC""... $ac_c" 1>&6
-echo "configure:3024: checking for ld used by GCC" >&5
+echo "configure:3031: checking for ld used by GCC" >&5
   ac_prog=`($CC -print-prog-name=ld) 2>&5`
   case "$ac_prog" in
     # Accept absolute paths.
@@ -3044,10 +3051,10 @@ echo "configure:3024: checking for ld used by GCC" >&5
   esac
 elif test "$with_gnu_ld" = yes; then
   echo $ac_n "checking for GNU ld""... $ac_c" 1>&6
-echo "configure:3048: checking for GNU ld" >&5
+echo "configure:3055: checking for GNU ld" >&5
 else
   echo $ac_n "checking for non-GNU ld""... $ac_c" 1>&6
-echo "configure:3051: checking for non-GNU ld" >&5
+echo "configure:3058: checking for non-GNU ld" >&5
 fi
 if eval "test \"`echo '$''{'ac_cv_path_LD'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
@@ -3083,7 +3090,7 @@ fi
 test -z "$LD" && { echo "configure: error: no acceptable ld found in \$PATH" 1>&2; exit 1; }
 
 echo $ac_n "checking if the linker ($LD) is GNU ld""... $ac_c" 1>&6
-echo "configure:3087: checking if the linker ($LD) is GNU ld" >&5
+echo "configure:3094: checking if the linker ($LD) is GNU ld" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_gnu_ld'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3099,7 +3106,7 @@ echo "$ac_t""$ac_cv_prog_gnu_ld" 1>&6
 
 
 echo $ac_n "checking for BSD-compatible nm""... $ac_c" 1>&6
-echo "configure:3103: checking for BSD-compatible nm" >&5
+echo "configure:3110: checking for BSD-compatible nm" >&5
 if eval "test \"`echo '$''{'ac_cv_path_NM'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3136,7 +3143,7 @@ echo "$ac_t""$NM" 1>&6
 
 
 echo $ac_n "checking whether ln -s works""... $ac_c" 1>&6
-echo "configure:3140: checking whether ln -s works" >&5
+echo "configure:3147: checking whether ln -s works" >&5
 if eval "test \"`echo '$''{'ac_cv_prog_LN_S'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
@@ -3180,8 +3187,8 @@ test x"$silent" = xyes && libtool_flags="$libtool_flags --silent"
 case "$host" in
 *-*-irix6*)
   # Find out which ABI we are using.
-  echo '#line 3184 "configure"' > conftest.$ac_ext
-  if { (eval echo configure:3185: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+  echo '#line 3191 "configure"' > conftest.$ac_ext
+  if { (eval echo configure:3192: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
     case "`/usr/bin/file conftest.o`" in
     *32-bit*)
       LD="${LD-ld} -32"
@@ -3202,19 +3209,19 @@ case "$host" in
   SAVE_CFLAGS="$CFLAGS"
   CFLAGS="$CFLAGS -belf"
   echo $ac_n "checking whether the C compiler needs -belf""... $ac_c" 1>&6
-echo "configure:3206: checking whether the C compiler needs -belf" >&5
+echo "configure:3213: checking whether the C compiler needs -belf" >&5
 if eval "test \"`echo '$''{'lt_cv_cc_needs_belf'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 3211 "configure"
+#line 3218 "configure"
 #include "confdefs.h"
 
 int main() {
 
 ; return 0; }
 EOF
-if { (eval echo configure:3218: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3225: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   lt_cv_cc_needs_belf=yes
 else
@@ -3365,9 +3372,9 @@ esac
 # the right suffix on the files.
 #
 echo $ac_n "checking for IPv6 structures""... $ac_c" 1>&6
-echo "configure:3369: checking for IPv6 structures" >&5
+echo "configure:3376: checking for IPv6 structures" >&5
 cat > conftest.$ac_ext <<EOF
-#line 3371 "configure"
+#line 3378 "configure"
 #include "confdefs.h"
 
 #include <sys/types.h>
@@ -3377,7 +3384,7 @@ int main() {
 struct sockaddr_in6 sin6; return (0);
 ; return 0; }
 EOF
-if { (eval echo configure:3381: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3388: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6
 	 found_ipv6=yes
@@ -3395,7 +3402,7 @@ rm -f conftest*
 # This is done before other IPv6 linking tests to LIBS is properly set.
 #
 echo $ac_n "checking for Kame IPv6 support""... $ac_c" 1>&6
-echo "configure:3399: checking for Kame IPv6 support" >&5
+echo "configure:3406: checking for Kame IPv6 support" >&5
 # Check whether --with-kame or --without-kame was given.
 if test "${with_kame+set}" = set; then
   withval="$with_kame"
@@ -3483,9 +3490,9 @@ case "$found_ipv6" in
 		LWRES_PLATFORM_HAVEIPV6="#define LWRES_PLATFORM_HAVEIPV6 1"
 
 		echo $ac_n "checking for in6addr_any""... $ac_c" 1>&6
-echo "configure:3487: checking for in6addr_any" >&5
+echo "configure:3494: checking for in6addr_any" >&5
 		cat > conftest.$ac_ext <<EOF
-#line 3489 "configure"
+#line 3496 "configure"
 #include "confdefs.h"
 
 #include <sys/types.h>
@@ -3496,7 +3503,7 @@ int main() {
 struct in6_addr in6; in6 = in6addr_any; return (0);
 ; return 0; }
 EOF
-if { (eval echo configure:3500: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3507: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6
 			 ISC_PLATFORM_NEEDIN6ADDRANY="#undef ISC_PLATFORM_NEEDIN6ADDRANY"
@@ -3512,9 +3519,9 @@ fi
 rm -f conftest*
 
 		echo $ac_n "checking for sin6_scope_id in struct sockaddr_in6""... $ac_c" 1>&6
-echo "configure:3516: checking for sin6_scope_id in struct sockaddr_in6" >&5
+echo "configure:3523: checking for sin6_scope_id in struct sockaddr_in6" >&5
 		cat > conftest.$ac_ext <<EOF
-#line 3518 "configure"
+#line 3525 "configure"
 #include "confdefs.h"
 
 #include <sys/types.h>
@@ -3527,7 +3534,7 @@ int main() {
 struct sockaddr_in6 xyzzy; xyzzy.sin6_scope_id = 0; return (0);
 ; return 0; }
 EOF
-if { (eval echo configure:3531: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3538: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6
 			 result="#define LWRES_HAVE_SIN6_SCOPE_ID 1"
@@ -3542,9 +3549,9 @@ rm -f conftest*
 		LWRES_HAVE_SIN6_SCOPE_ID="$result"
 
 		echo $ac_n "checking for in6_pktinfo""... $ac_c" 1>&6
-echo "configure:3546: checking for in6_pktinfo" >&5
+echo "configure:3553: checking for in6_pktinfo" >&5
 		cat > conftest.$ac_ext <<EOF
-#line 3548 "configure"
+#line 3555 "configure"
 #include "confdefs.h"
 
 #include <sys/types.h>
@@ -3557,7 +3564,7 @@ int main() {
 struct in6_pktinfo xyzzy; return (0);
 ; return 0; }
 EOF
-if { (eval echo configure:3561: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3568: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6
 			 ISC_PLATFORM_HAVEIN6PKTINFO="#define ISC_PLATFORM_HAVEIN6PKTINFO 1"
@@ -3606,9 +3613,9 @@ esac
 # which provides some (all?) of the desired functions.
 #
 echo $ac_n "checking for inet_ntop""... $ac_c" 1>&6
-echo "configure:3610: checking for inet_ntop" >&5
+echo "configure:3617: checking for inet_ntop" >&5
 cat > conftest.$ac_ext <<EOF
-#line 3612 "configure"
+#line 3619 "configure"
 #include "confdefs.h"
 
 #include <sys/types.h>
@@ -3618,7 +3625,7 @@ int main() {
 inet_ntop(0, 0, 0, 0); return (0);
 ; return 0; }
 EOF
-if { (eval echo configure:3622: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3629: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6
         ISC_PLATFORM_NEEDNTOP="#undef ISC_PLATFORM_NEEDNTOP"
@@ -3633,9 +3640,9 @@ else
 fi
 rm -f conftest*
 echo $ac_n "checking for inet_pton""... $ac_c" 1>&6
-echo "configure:3637: checking for inet_pton" >&5
+echo "configure:3644: checking for inet_pton" >&5
 cat > conftest.$ac_ext <<EOF
-#line 3639 "configure"
+#line 3646 "configure"
 #include "confdefs.h"
 
 #include <sys/types.h>
@@ -3645,7 +3652,7 @@ int main() {
 inet_pton(0, 0, 0); return (0);
 ; return 0; }
 EOF
-if { (eval echo configure:3649: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3656: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6
         ISC_PLATFORM_NEEDPTON="#undef ISC_PLATFORM_NEEDPTON"
@@ -3660,9 +3667,9 @@ else
 fi
 rm -f conftest*
 echo $ac_n "checking for inet_aton""... $ac_c" 1>&6
-echo "configure:3664: checking for inet_aton" >&5
+echo "configure:3671: checking for inet_aton" >&5
 cat > conftest.$ac_ext <<EOF
-#line 3666 "configure"
+#line 3673 "configure"
 #include "confdefs.h"
 
 #include <sys/types.h>
@@ -3672,7 +3679,7 @@ int main() {
 struct in_addr in; inet_aton(0, &in); return (0);
 ; return 0; }
 EOF
-if { (eval echo configure:3676: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:3683: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6
         ISC_PLATFORM_NEEDATON="#undef ISC_PLATFORM_NEEDATON"
@@ -3705,9 +3712,9 @@ EOF
 esac
 
 echo $ac_n "checking for sa_len in struct sockaddr""... $ac_c" 1>&6
-echo "configure:3709: checking for sa_len in struct sockaddr" >&5
+echo "configure:3716: checking for sa_len in struct sockaddr" >&5
 cat > conftest.$ac_ext <<EOF
-#line 3711 "configure"
+#line 3718 "configure"
 #include "confdefs.h"
 
 #include <sys/types.h>
@@ -3716,7 +3723,7 @@ int main() {
 struct sockaddr sa; sa.sa_len = 0; return (0);
 ; return 0; }
 EOF
-if { (eval echo configure:3720: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3727: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6
 	ISC_PLATFORM_HAVESALEN="#define ISC_PLATFORM_HAVESALEN 1"
@@ -3737,9 +3744,9 @@ rm -f conftest*
 # Look for a 4.4BSD or 4.3BSD struct msghdr
 #
 echo $ac_n "checking for struct msghdr flavor""... $ac_c" 1>&6
-echo "configure:3741: checking for struct msghdr flavor" >&5
+echo "configure:3748: checking for struct msghdr flavor" >&5
 cat > conftest.$ac_ext <<EOF
-#line 3743 "configure"
+#line 3750 "configure"
 #include "confdefs.h"
 
 #include <sys/types.h>
@@ -3748,7 +3755,7 @@ int main() {
 struct msghdr msg; msg.msg_flags = 0; return (0);
 ; return 0; }
 EOF
-if { (eval echo configure:3752: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3759: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""4.4BSD" 1>&6
 	ISC_PLATFORM_MSGHDRFLAVOR="#define ISC_NET_BSD44MSGHDR 1"
@@ -3766,9 +3773,9 @@ rm -f conftest*
 # Look for in_port_t.
 #
 echo $ac_n "checking for type in_port_t""... $ac_c" 1>&6
-echo "configure:3770: checking for type in_port_t" >&5
+echo "configure:3777: checking for type in_port_t" >&5
 cat > conftest.$ac_ext <<EOF
-#line 3772 "configure"
+#line 3779 "configure"
 #include "confdefs.h"
 
 #include <sys/types.h>
@@ -3777,7 +3784,7 @@ int main() {
 in_port_t port = 25; return (0);
 ; return 0; }
 EOF
-if { (eval echo configure:3781: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3788: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6
 	ISC_PLATFORM_NEEDPORTT="#undef ISC_PLATFORM_NEEDPORTT"
@@ -3795,9 +3802,9 @@ rm -f conftest*
 # Check for addrinfo
 #
 echo $ac_n "checking for struct addrinfo""... $ac_c" 1>&6
-echo "configure:3799: checking for struct addrinfo" >&5
+echo "configure:3806: checking for struct addrinfo" >&5
 cat > conftest.$ac_ext <<EOF
-#line 3801 "configure"
+#line 3808 "configure"
 #include "confdefs.h"
 
 #include <netdb.h>
@@ -3805,7 +3812,7 @@ int main() {
 struct addrinfo a; return (0);
 ; return 0; }
 EOF
-if { (eval echo configure:3809: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3816: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6
 	ISC_LWRES_NEEDADDRINFO="#undef ISC_LWRES_NEEDADDRINFO"
@@ -3824,9 +3831,9 @@ rm -f conftest*
 
 
 echo $ac_n "checking for int sethostent""... $ac_c" 1>&6
-echo "configure:3828: checking for int sethostent" >&5
+echo "configure:3835: checking for int sethostent" >&5
 cat > conftest.$ac_ext <<EOF
-#line 3830 "configure"
+#line 3837 "configure"
 #include "confdefs.h"
 
 #include <netdb.h>
@@ -3834,7 +3841,7 @@ int main() {
 int i = sethostent(0); return(0);
 ; return 0; }
 EOF
-if { (eval echo configure:3838: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3845: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6
 	ISC_LWRES_SETHOSTENTINT="#define ISC_LWRES_SETHOSTENTINT 1"
@@ -3849,9 +3856,9 @@ rm -f conftest*
 
 
 echo $ac_n "checking for int endhostent""... $ac_c" 1>&6
-echo "configure:3853: checking for int endhostent" >&5
+echo "configure:3860: checking for int endhostent" >&5
 cat > conftest.$ac_ext <<EOF
-#line 3855 "configure"
+#line 3862 "configure"
 #include "confdefs.h"
 
 #include <netdb.h>
@@ -3859,7 +3866,7 @@ int main() {
 int i = endhostent(); return(0);
 ; return 0; }
 EOF
-if { (eval echo configure:3863: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3870: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6
 	ISC_LWRES_ENDHOSTENTINT="#define ISC_LWRES_ENDHOSTENTINT 1"
@@ -3874,9 +3881,9 @@ rm -f conftest*
 
 
 echo $ac_n "checking for getnetbyaddr(in_addr_t, ...)""... $ac_c" 1>&6
-echo "configure:3878: checking for getnetbyaddr(in_addr_t, ...)" >&5
+echo "configure:3885: checking for getnetbyaddr(in_addr_t, ...)" >&5
 cat > conftest.$ac_ext <<EOF
-#line 3880 "configure"
+#line 3887 "configure"
 #include "confdefs.h"
 
 #include <netdb.h>
@@ -3885,7 +3892,7 @@ int main() {
 
 ; return 0; }
 EOF
-if { (eval echo configure:3889: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3896: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6
 	ISC_LWRES_GETNETBYADDRINADDR="#define ISC_LWRES_GETNETBYADDRINADDR 1"
@@ -3900,9 +3907,9 @@ rm -f conftest*
 
 
 echo $ac_n "checking for int setnetent""... $ac_c" 1>&6
-echo "configure:3904: checking for int setnetent" >&5
+echo "configure:3911: checking for int setnetent" >&5
 cat > conftest.$ac_ext <<EOF
-#line 3906 "configure"
+#line 3913 "configure"
 #include "confdefs.h"
 
 #include <netdb.h>
@@ -3910,7 +3917,7 @@ int main() {
 int i = setnetent(0); return(0);
 ; return 0; }
 EOF
-if { (eval echo configure:3914: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3921: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6
 	ISC_LWRES_SETNETENTINT="#define ISC_LWRES_SETNETENTINT 1"
@@ -3925,9 +3932,9 @@ rm -f conftest*
 
 
 echo $ac_n "checking for int endnetent""... $ac_c" 1>&6
-echo "configure:3929: checking for int endnetent" >&5
+echo "configure:3936: checking for int endnetent" >&5
 cat > conftest.$ac_ext <<EOF
-#line 3931 "configure"
+#line 3938 "configure"
 #include "confdefs.h"
 
 #include <netdb.h>
@@ -3935,7 +3942,7 @@ int main() {
 int i = endnetent(); return(0);
 ; return 0; }
 EOF
-if { (eval echo configure:3939: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3946: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6
 	ISC_LWRES_ENDNETENTINT="#define ISC_LWRES_ENDNETENTINT 1"
@@ -3950,9 +3957,9 @@ rm -f conftest*
 
 
 echo $ac_n "checking for gethostbyadd(const void *, size_t, ...)""... $ac_c" 1>&6
-echo "configure:3954: checking for gethostbyadd(const void *, size_t, ...)" >&5
+echo "configure:3961: checking for gethostbyadd(const void *, size_t, ...)" >&5
 cat > conftest.$ac_ext <<EOF
-#line 3956 "configure"
+#line 3963 "configure"
 #include "confdefs.h"
 
 #include <netdb.h>
@@ -3961,7 +3968,7 @@ int main() {
 return(0);
 ; return 0; }
 EOF
-if { (eval echo configure:3965: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3972: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6
 	ISC_LWRES_GETHOSTBYADDRVOID="#define ISC_LWRES_GETHOSTBYADDRVOID 1"
@@ -3976,9 +3983,9 @@ rm -f conftest*
 
 
 echo $ac_n "checking for h_errno in netdb.h""... $ac_c" 1>&6
-echo "configure:3980: checking for h_errno in netdb.h" >&5
+echo "configure:3987: checking for h_errno in netdb.h" >&5
 cat > conftest.$ac_ext <<EOF
-#line 3982 "configure"
+#line 3989 "configure"
 #include "confdefs.h"
 
 #include <netdb.h>
@@ -3986,7 +3993,7 @@ int main() {
 h_errno = 1; return(0);
 ; return 0; }
 EOF
-if { (eval echo configure:3990: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
+if { (eval echo configure:3997: \"$ac_compile\") 1>&5; (eval $ac_compile) 2>&5; }; then
   rm -rf conftest*
   echo "$ac_t""yes" 1>&6
 	ISC_LWRES_NEEDHERRNO="#undef ISC_LWRES_NEEDHERRNO"
@@ -4001,12 +4008,12 @@ rm -f conftest*
 
 
 echo $ac_n "checking for getipnodebyname""... $ac_c" 1>&6
-echo "configure:4005: checking for getipnodebyname" >&5
+echo "configure:4012: checking for getipnodebyname" >&5
 if eval "test \"`echo '$''{'ac_cv_func_getipnodebyname'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4010 "configure"
+#line 4017 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char getipnodebyname(); below.  */
@@ -4029,7 +4036,7 @@ getipnodebyname();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4033: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4040: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_getipnodebyname=yes"
 else
@@ -4050,12 +4057,12 @@ ISC_LWRES_GETIPNODEPROTO="#define ISC_LWRES_GETIPNODEPROTO 1"
 fi
 
 echo $ac_n "checking for getnameinfo""... $ac_c" 1>&6
-echo "configure:4054: checking for getnameinfo" >&5
+echo "configure:4061: checking for getnameinfo" >&5
 if eval "test \"`echo '$''{'ac_cv_func_getnameinfo'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4059 "configure"
+#line 4066 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char getnameinfo(); below.  */
@@ -4078,7 +4085,7 @@ getnameinfo();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4082: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4089: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_getnameinfo=yes"
 else
@@ -4099,12 +4106,12 @@ ISC_LWRES_GETNAMEINFOPROTO="#define ISC_LWRES_GETNAMEINFOPROTO 1"
 fi
 
 echo $ac_n "checking for getaddrinfo""... $ac_c" 1>&6
-echo "configure:4103: checking for getaddrinfo" >&5
+echo "configure:4110: checking for getaddrinfo" >&5
 if eval "test \"`echo '$''{'ac_cv_func_getaddrinfo'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4108 "configure"
+#line 4115 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char getaddrinfo(); below.  */
@@ -4127,7 +4134,7 @@ getaddrinfo();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4131: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4138: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_getaddrinfo=yes"
 else
@@ -4159,9 +4166,9 @@ fi
 # Look for a sysctl call to get the list of network interfaces.
 #
 echo $ac_n "checking for interface list sysctl""... $ac_c" 1>&6
-echo "configure:4163: checking for interface list sysctl" >&5
+echo "configure:4170: checking for interface list sysctl" >&5
 cat > conftest.$ac_ext <<EOF
-#line 4165 "configure"
+#line 4172 "configure"
 #include "confdefs.h"
 
 #include <sys/param.h>
@@ -4191,12 +4198,12 @@ rm -f conftest*
 # Check for some other useful functions that are not ever-present.
 #
 echo $ac_n "checking for strsep""... $ac_c" 1>&6
-echo "configure:4195: checking for strsep" >&5
+echo "configure:4202: checking for strsep" >&5
 if eval "test \"`echo '$''{'ac_cv_func_strsep'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4200 "configure"
+#line 4207 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char strsep(); below.  */
@@ -4219,7 +4226,7 @@ strsep();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4223: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4230: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_strsep=yes"
 else
@@ -4240,12 +4247,12 @@ ISC_PLATFORM_NEEDSTRSEP="#define ISC_PLATFORM_NEEDSTRSEP 1"
 fi
 
 echo $ac_n "checking for vsnprintf""... $ac_c" 1>&6
-echo "configure:4244: checking for vsnprintf" >&5
+echo "configure:4251: checking for vsnprintf" >&5
 if eval "test \"`echo '$''{'ac_cv_func_vsnprintf'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4249 "configure"
+#line 4256 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char vsnprintf(); below.  */
@@ -4268,7 +4275,7 @@ vsnprintf();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4272: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4279: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_vsnprintf=yes"
 else
@@ -4297,17 +4304,17 @@ fi
 
 
 echo $ac_n "checking for sizeof(long long int) == sizeof(long int)""... $ac_c" 1>&6
-echo "configure:4301: checking for sizeof(long long int) == sizeof(long int)" >&5
+echo "configure:4308: checking for sizeof(long long int) == sizeof(long int)" >&5
 if test "$cross_compiling" = yes; then
   echo "$ac_t""default yes" 1>&6
 	ISC_PLATFORM_LONGLONGEQUALLONG="#define ISC_PLATFORM_LONGLONGEQUALLONG 1"
 else
   cat > conftest.$ac_ext <<EOF
-#line 4307 "configure"
+#line 4314 "configure"
 #include "confdefs.h"
 main() { exit(!(sizeof(long long int) == sizeof(long int))); }
 EOF
-if { (eval echo configure:4311: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
+if { (eval echo configure:4318: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext} && (./conftest; exit) 2>/dev/null
 then
   echo "$ac_t""yes" 1>&6
 	ISC_PLATFORM_LONGLONGEQUALLONG="#define ISC_PLATFORM_LONGLONGEQUALLONG 1"
@@ -4327,12 +4334,12 @@ fi
 # Security Stuff
 #
 echo $ac_n "checking for chroot""... $ac_c" 1>&6
-echo "configure:4331: checking for chroot" >&5
+echo "configure:4338: checking for chroot" >&5
 if eval "test \"`echo '$''{'ac_cv_func_chroot'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4336 "configure"
+#line 4343 "configure"
 #include "confdefs.h"
 /* System header to define __stub macros and hopefully few prototypes,
     which can conflict with char chroot(); below.  */
@@ -4355,7 +4362,7 @@ chroot();
 
 ; return 0; }
 EOF
-if { (eval echo configure:4359: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
+if { (eval echo configure:4366: \"$ac_link\") 1>&5; (eval $ac_link) 2>&5; } && test -s conftest${ac_exeext}; then
   rm -rf conftest*
   eval "ac_cv_func_chroot=yes"
 else
@@ -4381,17 +4388,17 @@ for ac_hdr in linux/capability.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:4385: checking for $ac_hdr" >&5
+echo "configure:4392: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4390 "configure"
+#line 4397 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:4395: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:4402: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
@@ -4421,17 +4428,17 @@ for ac_hdr in linux/prctl.h
 do
 ac_safe=`echo "$ac_hdr" | sed 'y%./+-%__p_%'`
 echo $ac_n "checking for $ac_hdr""... $ac_c" 1>&6
-echo "configure:4425: checking for $ac_hdr" >&5
+echo "configure:4432: checking for $ac_hdr" >&5
 if eval "test \"`echo '$''{'ac_cv_header_$ac_safe'+set}'`\" = set"; then
   echo $ac_n "(cached) $ac_c" 1>&6
 else
   cat > conftest.$ac_ext <<EOF
-#line 4430 "configure"
+#line 4437 "configure"
 #include "confdefs.h"
 #include <$ac_hdr>
 EOF
 ac_try="$ac_cpp conftest.$ac_ext >/dev/null 2>conftest.out"
-{ (eval echo configure:4435: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
+{ (eval echo configure:4442: \"$ac_try\") 1>&5; (eval $ac_try) 2>&5; }
 ac_err=`grep -v '^ *+' conftest.out | grep -v "^conftest.${ac_ext}\$"`
 if test -z "$ac_err"; then
   rm -rf conftest*
diff --git a/configure.in b/configure.in
index 712e2db99c..b3d310618e 100644
--- a/configure.in
+++ b/configure.in
@@ -18,7 +18,7 @@ AC_DIVERT_PUSH(AC_DIVERSION_NOTICE)dnl
 esyscmd([sed "s/^/# /" COPYRIGHT])dnl
 AC_DIVERT_POP()dnl
 
-AC_REVISION($Revision: 1.186 $)
+AC_REVISION($Revision: 1.187 $)
 
 AC_INIT(lib/dns/name.c)
 AC_PREREQ(2.13)
@@ -136,13 +136,20 @@ case "$enable_threads" in
 	yes|'')
 		AC_MSG_RESULT(yes)
 		use_threads=true
-		ISC_PLATFORM_USETHREADS="#define ISC_PLATFORM_USETHREADS 1" ;;
+		ISC_PLATFORM_USETHREADS="#define ISC_PLATFORM_USETHREADS 1"
+		;;
 	no)
 		AC_MSG_RESULT(no)	
 		use_threads=false
-		ISC_PLATFORM_USETHREADS="#undef ISC_PLATFORM_USETHREADS" ;;
+#ifdef ISC_PLATFORM_USETHREADS
+		ISC_PLATFORM_USETHREADS="#undef ISC_PLATFORM_USETHREADS"
+#else /* ISC_PLATFORM_USETHREADS */
+#+		AC_MSG_ERROR(["--enable-threads is not implemented"])
+#endif /* ISC_PLATFORM_USETHREADS */
+		;;
 	*)
-	    	AC_MSG_ERROR(["--enable-threads takes yes or no"]) ;;
+	    	AC_MSG_ERROR(["--enable-threads takes yes or no"])
+		;;
 esac
 AC_SUBST(ISC_PLATFORM_USETHREADS)