--- config.m4   2003-02-27 10:13:21.000000000 -0800
+++ /usr/src/phpdev/php5-200304282130/ext/openssl/config.m4     2003-04-28 14:19:19.000000000 -0700
@@ -2,8 +2,41 @@
 dnl $Id: config.m4,v 1.5 2003/02/27 17:43:36 wez Exp $
 dnl
 
+AC_DEFUN(PHP_SSL_KRB_CHK, [
+  AC_ARG_WITH(kerberos,
+  [  --with-kerberos[=DIR]     OpenSSL: Include Kerberos support. DIR is the Kerberos install dir.],[
+    PHP_KERBEROS=$withval
+  ],[
+    PHP_KERBEROS=no
+  ])
+
+  if test "$PHP_KERBEROS" != "no"; then
+    if test "$PHP_KERBEROS" = "yes"; then
+      SEARCH_PATHS="/usr/kerberos /usr/local /usr"
+    else
+      SEARCH_PATHS=$PHP_KERBEROS
+    fi
+
+    for i in $SEARCH_PATHS; do
+      if test -f $i/include/krb5.h; then
+        PHP_KERBEROS_DIR=$i
+        break
+      fi
+    done
+
+    if test -z "$PHP_KERBEROS_DIR"; then
+      AC_MSG_ERROR([Kerberos libraries not found.
+      Check the path given to --with-kerberos (if no path is given, searches in /usr/kerberos, /usr/local and /usr )
+      ])
+    else
+      PHP_ADD_INCLUDE($PHP_KERBEROS_DIR/include)
+    fi
+  fi
+])
+
 if test "$PHP_OPENSSL" != "no"; then
   PHP_NEW_EXTENSION(openssl, openssl.c xp_ssl.c, $ext_openssl_shared)
   OPENSSL_SHARED_LIBADD="-lcrypto -lssl"
   PHP_SUBST(OPENSSL_SHARED_LIBADD)
   AC_DEFINE(HAVE_OPENSSL_EXT,1,[ ])
+  PHP_SSL_KRB_CHK
 fi