Installing of XXTEA PHP package.

There are many ways to build the package. Below you can find details for most
useful ways of package building:

1. with PHP
2. with phpize utility
3. under Windows using Microsoft Visual C (.NET or VC6)

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Way 1: Building the package with PHP
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1.  Create ext/xxtea folder in the php-source-folder. Copy all files
    from the package into created folder.

2.  Run
        ./buildconf
    to rebuild PHP's configure script.

3.  Compile php with option:
    --enable-xxtea to build bundled into PHP module
    --enable-xxtea=shared to build dinamycally loadable module

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Way 2: Building the package with phpize utility
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1.  Unpack contents of the package.

2.  Run
        phpize
    script, which will prepare environment for building XXTEA package.

3.  Run 
        ./configure --enable-xxtea=shared
    to generate makefile

4.  Run
        make
    to build XXTEA extension library. It will be placed into
    ./modules folder.

5.  Run
        make install
    to install XXTEA extension library into PHP

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Way 3: Building the package under Windows using Microsoft Visual C (.NET or VC6)
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1.  Create ext/xxtea folder in the php-source-folder. Copy all files
    from the package into created folder.

2.  Copy php4ts.lib (for PHP4) or php5ts.lib (for PHP5) static library from
    your version of PHP into ext/xxtea folder.

3.  Open php_xxtea.sln - solution file under MSVC.NET or php_xxtea.dsw - 
    workspace file under MSVC6. Try to build Release_php4 (for PHP4) or Release_php5
    (for PHP5) configuration.

4.  Copy php_xxtea.dll from ext/xxtea/Release_php4 or ext/xxtea/Release_php5
    into {extension_dir} folder. Path to {extension_dir} can be found in php.ini

5.  Add line
        extension=php_xxtea.dll
    into php.ini
