diff -dur -x '*.orig' ntp-4.2.6p1.orig/configure.ac ntp-4.2.6p1/configure.ac
--- ntp-4.2.6p1.orig/configure.ac	2010-05-24 20:26:21.000000000 +0200
+++ ntp-4.2.6p1/configure.ac	2010-05-24 20:32:57.000000000 +0200
@@ -3247,7 +3247,6 @@
 AC_SUBST(OPENSSL_INC)
 AC_SUBST(OPENSSL_LIB)
 
-AC_MSG_CHECKING([for openssl library directory])
 AC_ARG_WITH(openssl-libdir,
 	AC_HELP_STRING([--with-openssl-libdir], [+ =/something/reasonable]),
 [ans=$withval],
@@ -3257,39 +3256,14 @@
 esac])
 case "$ans" in
  no) ;;
- yes) # Look in:
-    ans="/usr/lib /usr/lib/openssl /usr/sfw/lib /usr/local/lib /usr/local/ssl/lib /lib"
-    ;;
- *) # Look where they said
-    ;;
-esac
-case "$ans" in
- no) ;;
- *) # Look for libcrypto.a and libssl.a:
-    for i in $ans no
-    do
-	case "$host" in
-	 *-*-darwin*)
-	    test -f $i/libcrypto.dylib -a -f $i/libssl.dylib && break
-	    ;;
-	 *)
-	    test -f $i/libcrypto.so -a -f $i/libssl.so && break
-	    test -f $i/libcrypto.a -a -f $i/libssl.a && break
-	    ;;
-	esac
-    done
-    case "$i" in
-     no)
-	ans=no
-	OPENSSL_LIB=
-	;;
-     *) ans=$i
-	OPENSSL_LIB=$ans
-	;;
-    esac
-    ;;
+ *)
+  if test "$ans" != "yes" ; then
+      LDFLAGS="$LDFLAGS -L$ans"
+  fi
+  AC_CHECK_LIB([crypto],[DES_crypt],[AC_SUBST(LCRYPTO,[-lcrypto])])
+  AC_CHECK_LIB([ssl],[SSL_CTX_new],[AC_SUBST(LSSL,[-lssl])])
+  ;;
 esac
-AC_MSG_RESULT([$ans])
 
 AC_MSG_CHECKING([for openssl include directory])
 AC_ARG_WITH(openssl-incdir,
@@ -3301,14 +3275,6 @@
 esac])
 case "$ans" in
  no) ;;
- yes) # look in:
-    ans="/usr/include /usr/sfw/include /usr/local/include /usr/local/ssl/include"
-    ;;
- *) # Look where they said
-    ;;
-esac
-case "$ans" in
- no) ;;
  *) # look for openssl/opensslconf.h:
     for i in $ans no
     do
@@ -3335,7 +3301,7 @@
  no)
     ;;
  yes|openssl)
-    if test -z "$OPENSSL_LIB" -o -z "$OPENSSL_INC"
+    if test -z "$LCRYPTO" -o -z "$OPENSSL_INC"
     then
 	ans=no
     else
@@ -3349,11 +3315,9 @@
  yes)
     # We have OpenSSL inc/lib - use them.
     CPPFLAGS="$CPPFLAGS -I$OPENSSL_INC"
-    LDFLAGS="$LDFLAGS -L$OPENSSL_LIB"
     case "$need_dash_r" in
      1) LDFLAGS="$LDFLAGS -R$OPENSSL_LIB"
     esac
-    AC_SUBST(LCRYPTO, [-lcrypto])
     AC_DEFINE(OPENSSL, , [Use OpenSSL?])
 esac
 
Only in ntp-4.2.6p1: configure.ac~