Refactor file writing - information on our use of Perl and Perl modules

 To install OpenSSL, you will need:

  * make

  * Perl 5 with core modules (see 'Note on Perl' further down)

  * Perl 5 with core modules (please read README.PERL)

  * The perl module Text::Template (please read README.PERL)

  * an ANSI C compiler

  * a development environment in form of development libraries and C

    header files

     with names of the form <foo.h>.

 Note on Perl

 ------------

 For our scripts, we rely quite a bit on Perl, and increasingly on

 some core Perl modules.  These Perl modules are part of the Perl

 source, so if you build Perl on your own, you should be set.

 However, if you install Perl as binary packages, the outcome might

 differ, and you may have to check that you do get the core modules

 installed properly.  We do not claim to know them all, but experience

 has told us the following:

 - on Linux distributions based on Debian, the package 'perl' will

   install the core Perl modules as well, so you will be fine.

 - on Linux distributions based on RPMs, you will need to install

   'perl-core' rather than just 'perl'.

 It is highly recommended that you have at least Perl version 5.12

 installed.

 Note on multi-threading

 -----------------------

 You should have a full DJGPP environment installed, including the

 latest versions of DJGPP, GCC, BINUTILS, BASH, etc. This package

 requires that PERL and BC also be installed.

 requires that PERL and the PERL module Text::Template also be

 installed.

 All of these can be obtained from the usual DJGPP mirror sites or

 directly at "http://www.delorie.com/pub/djgpp". For help on which

  * Appropriate SDK might be required

  * Perl for Win32 [commonly recommended ActiveState Perl is available

    from http://www.activestate.com/Products/ActivePerl/]

    You also need the perl module Text::Template.

    Please read README.PERL for more information.

  * wcecompat compatibility library available at

    http://www.essemer.com.au/windowsce/

 Here are a few comments about building OpenSSL for Windows environments.

 - you need Perl.  Unless you will build on Cygwin, you will

   need ActiveState Perl, available from http://www.activestate.com/ActivePerl.

 - you need Perl.  Unless you will build on Cygwin, you will need

   ActiveState Perl, available from http://www.activestate.com/ActivePerl.  

   You also need the perl module Text::Template, available on CPAN.

   Please read README.PERL for more information.

 - one of the following C compilers:

 TOC

 ===

 - Notes on Perl

 - Notes on Perl on Windows

 - Notes on Perl modules we use

 - Notes on installing a perl module

 Notes on Perl

 -------------

 For our scripts, we rely quite a bit on Perl, and increasingly on

 some core Perl modules.  These Perl modules are part of the Perl

 source, so if you build Perl on your own, you should be set.

 However, if you install Perl as binary packages, the outcome might

 differ, and you may have to check that you do get the core modules

 installed properly.  We do not claim to know them all, but experience

 has told us the following:

 - on Linux distributions based on Debian, the package 'perl' will

   install the core Perl modules as well, so you will be fine.

 - on Linux distributions based on RPMs, you will need to install

   'perl-core' rather than just 'perl'.

 It is highly recommended that you have at least Perl version 5.10

 installed.

 Notes on Perl on Windows

 ------------------------

 If you will build on Cygwin (and possibly some other POSIX layers),

 Perl is already part of your distribution.  Simply use the Cygwin

 package manager to make sure Perl gets installed.

 Otherwise, you will need to install Perl separately.  The Perl

 package that we know of is ActiveState Perl, available from

 http://www.activestate.com/ActivePerl.

 Notes on Perl modules we use

 ----------------------------

 We make increasing use of Perl modules, and do our best to limit

 ourselves to core Perl modules to keep the requirements down.  There

 are just a few exceptions:

 Test::More         We require the minimum version to be 0.96, which

                    appeared in Perl 5.13.4, because that version was

                    the first to have all the features we're using.

                    This module is required for testing only!  If you

                    don't plan on running the tests, you don't need to

                    bother with this one.

 Text::Template     This module is not part of the core Perl modules.

                    As a matter of fact, the core Perl modules do not

                    include any templating module to date.

                    This module is absolutely needed, configuration

                    depends on it.

 To avoid unnecessary initial hurdles, we have bundled a copy of the

 following modules in our source.  They will work as fallbacks if

 these modules aren't already installed on the system.

    Text::Template

 Notes on installing a perl module

 ---------------------------------

 There are a number of ways to install a perl module.  In all

 descriptions below, Text::Template will server as an example.

 1. for Linux users, the easiest is to install with the use of your

    favorite package manager.  Usually, all you need to do is search

    for the module name and to install the package that comes up.

    On Debian based Linux distributions, it would go like this:

        $ apt-cache search Text::Template

        ...

        libtext-template-perl - perl module to process text templates

        $ sudo apt-get install libtext-template-perl

    Perl modules in Debian based distributions use package names like

    the name of the module in question, with "lib" prepended and

    "-perl" appended.

 2. Install using CPAN.  This is very easy, but usually requires root

    access:

        $ cpan -i Text::Template

    Note that this runs all the tests that the module to be install

    comes with.  This is usually a smooth operation, but there are

    platforms where a failure is indicate even though the actual tests

    were successful.  Should that happen, you can force an

    installation regardless (that should be safe since you've already

    seen the tests succeed!):

        $ cpan -f -i Text::Template