================================================================================
  Licensed to the Apache Software Foundation (ASF) under one or more
  contributor license agreements.  See the NOTICE file distributed with
  this work for additional information regarding copyright ownership.
  The ASF licenses this file to You under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with
  the License.  You may obtain a copy of the License at

      http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
================================================================================

Prerequisites
-------------

You need OpenSSL version 1.0.2 or higher and APR version 1.4.0 or higher.

Building from source package
-----------------------------

>  configure --with-apr=apr_install_location --with-ssl=openssl_install_location
>  make

Building from the svn tree
--------------------------

>  sh buildconf --with-apr=apr_source_location.
>  configure --with-apr=apr_install_location --with-ssl=openssl_install_location
>  make

Testing the build
-----------------

The make should produce a .so file named libtcnative-1.so.
Build the jar containing the examples by

> cd ..
>  ant jar
  Run one of the example (the echo one):
>  ant run-echo
 
Using it in Tomcat
------------------

1. In <Connector> use of conf/server.xml:
   protocol="org.apache.coyote.http11.Http11AprProtocol"
2. In bin/setenv.sh add the following:
   CATALINA_OPTS="$CATALINA_OPTS -Djava.library.path=tclib_location"
   In my machine I am using:
   /home/jfclere/native/native/.libs for tclib_location

NOTES
-----
  - configure --disable-openssl: Configure without ssl support.
  - To use it in Tomcat you may have to add in bin/setenv.sh:
    LD_LIBRARY_PATH=openssl_install_location/lib; export LD_LIBRARY_PATH
    (use ldd ./.libs/libtcnative-1.so to check it).
  - quick testing: openssl s_client -connect localhost:8443
  - For MAC OS X you must manually add a link
    cd ${tcnative installdir}
    ln -d libtcnative-1.dylib libtcnative-1.jnilib


Building statically linked library on Unixes
--------------------------------------------

To statically link apr and openssl dependencies use the following
procedure.

You will need to build static version of openssl library.

> ./config --prefix=~/natives/openssl no-shared -fPIC
> make
> make install_sw

Note that for Solaris platform you should use -KPIC instead -fPIC
so that library is compiled with position independent code.

Apr by default builds both static and dynamic libraries.

> ./configure --prefix=~/natives/apr
> make
> make install

After that edit the ~/natives/apr/lib/libapr-1.la file
and comment or delete the following sections:
dlname='...' and library_names='...'
This is needed so that libtool picks the static version of the library.

Build Tomcat native by executing

> ./configure --with-apr=~/natives/apr --with-ssl=~/natives/openssl --prefix=~/natives/tomcat
> make
> make install

That's it. You have just build libtcnative-1.so with statically linked
apr and openssl.