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       Inline-FAQ - The Inline FAQ


       Welcome to the official Inline FAQ. In this case, FAQ means: Formerly
       Answered Questions

       This is a collection of old, long-winded emails that myself and others
       have sent to the Inline mailing list. ( They have been
       reviewed and edited for general Inline edification. Some of them may be
       related to a specific language. They are presented here in a
       traditional FAQ layout.


       Since there is only a handful of content so far, all FAQs are currently
       under this heading.

   How disposable is a .Inline or _Inline directory?
       I probably need to be more emphatic about the role of "_Inline/" cache
       directories. Since they are created automatically, they are completely
       disposable. I delete them all the time. And it is fine to have a
       different one for each project. In fact as long as you don't have
       "~/.Inline/" defined, Inline will create a new "./_Inline" directory
       (unless, you've done something to override this automatic process -
       such as using the DIRECTORY config option, or using the
       PERL_INLINE_DIRECTORY environment variable). You can move that to
       "./.Inline" and it will continue to work if you want togive it more
       longevity and hide it from view. There is a long complicated list of
       rules about how "[_.]Inline/" directories are used / created. But it
       was designed to give you the most flexibility / ease-of-use. Never be
       afraid to nuke 'em.  They'll just pop right back next time they're
       needed. :)

   Whatever happened to the SITE_INSTALL option?
       SITE_INSTALL is gone. I was going to leave it in and change the
       semantics, but thought it better to remove it, so people wouldn't try
       to use it the old way.  There is now _INSTALL_ (but you're not supposed
       to know that :). It works magically through the use of
       Inline::MakeMaker. I explained this earlier but it's worth going
       through again because it's the biggest change for 0.40.  Here's how to
       'permanently' install an Inline extension (Inline based module) with

           1) Create a module with Inline.
           2) Test it using the normal / local `_Inline/` cache.
           3) Create a Makefile.PL (like the one produced by h2xs)
           4) Change 'use ExtUtils::MakeMaker' to 'use Inline::MakeMaker'
           5) In the Makefile.PL's WriteMakefile() insert:

               CONFIGURE_REQUIRES  =>  {
                   'Inline::MakeMaker'     => 0.45,
                   'ExtUtils::MakeMaker'   => 6.52,

              (See the "Writing Modules with Inline" section of Inline.pod for
               an explanation / elaboration.)

           6) Change your 'use Inline C => DATA' to 'use Inline C => DATA => NAME
              => Foo => VERSION => 1.23'
           7) Make sure NAME matches your package name ('Foo'), or begins with
           8) If you want to quiet a harmless warning that will appear when the
              module is loaded via "require", do "Inline->init();".
              See "Writing Modules with Inline" in the Inline pod for details.
           9) Make sure VERSION matches $Foo::VERSION. This must be a string (not a
              number) matching `/^\d\.\d\d$/`
           10) Do the perl / make / test / install dance (thanks binkley :)

       With Inline 0.41 (or thereabouts) you can skip steps 3 & 4, and just
       say "perl -MInline=INSTALL ./". This will work for non-Inline
       modules too.  It will become the defacto standard (since there is no
       easy standard) way of installing a Perl module. It will allow
       Makefile.PL parameters "perl - MInline=INSTALL ./ -
       PREFIX=/home/ingy/perl" and things like that. It will also make use of
       a MANIFEST if you provide one.

   How do I create a binary distribution using Inline?
       I've figured out how to create and install a PPM binary distribution;
       with or without distributing the C code! And I've decided to share it
       with all of you :)

       NOTE: Future versions of Inline will make this process a one line
       command. But
             for now just use this simple recipe.

       The Inline 0.40 distribution comes with a sample extension module
       called Math::Simple. Theoretically you could distribute this module on
       CPAN. It has all the necessary support for installation. You can find
       it in "Inline- 0.40/modules/Math/Simple/". Here are the steps for
       converting this into a binary distribution without C source code.

       NOTE: The recipient of this binary distribution will need to have the
    module installed. This module requires a lot of other CPAN
             modules. ActivePerl (available for Win32, Linux, and Solaris) has
             of these bundled. While ActivePerl isn't required, it makes
       things (a
             lot) easier.

       1) cd "Inline-0.40/Math/Simple/"

       2) Divide into two files:

           ---8<--- (
           package Math::Simple;
           use strict;
           require Exporter;
           @Math::Simple::ISA = qw(Exporter);
           @Math::Simple::EXPORT = qw(add subtract);
           $Math::Simple::VERSION = '1.23';

           use Inline (C => 'src/Simple.c' =>
                       NAME => 'Math::Simple',
                       VERSION => '1.23',
           ---8<--- (src/Simple.c)
           int add (int x, int y) {
               return x + y;

           int subtract (int x, int y) {
               return x - y;

       So now you have the Perl in one file and the C in the other. The C code
       must be in a subdirectory.

       3) Note that I also changed the term 'DATA' to the name of the C file.
          will work just as if the C were still inline.

       4) Run 'perl Makefile.PL'

       5) Run 'make test'

       6) Get the MD5 key from "blib/arch/auto/Math/Simple/Simple.inl"

       7) Edit "blib/lib/Math/". Change "src/Simple.c" to
          "02c61710cab5b659efc343a9a830aa73" (the MD5 key)

       8) Run 'make ppd'

       9) Edit 'Math-Simple.ppd'. Fill in AUTHOR and ABSTRACT if you wish.
          Then change:

           <CODEBASE HREF="" />


           <CODEBASE HREF="Math-Simple.tar.gz" />

       10) Run:

           tar cvf Math-Simple.tar blib
           gzip --best Math-Simple.tar

       11) Run:

           tar cvf Math-Simple-1.23.tar Math-Simple.ppd Math-Simple.tar.gz
           gzip --best Math-Simple-1.23.tar

       12) Distribute Math-Simple-1.23.tar.gz with the following instructions:

       A) Run:

           gzip -d Math-Simple-1.23.tar.gz
           tar xvzf Math-Simple-1.23.tar

       B) Run 'ppm install Math-Simple.ppd'

       C) Delete Math-Simple.tar and Math-Simple.ppd.

       D) Test with:

           perl -MMath::Simple -le 'print add(37, 42)'

       That's it. The process should also work with zip instead of tar, but I
       haven't tried it.

       The recipient of the binary must have Perl built with a matching
       architecture.  Luckily, ppm will catch this.

       For a binary dist with C source code, simply omit steps 2, 3, 6, and 7.

       If this seems too hard, then in a future version you should be able to
       just type:

           make ppm

   Why does `C/t/09parser.t` fail on Cygwin ?
       It doesn't always fail on Cygwin, but if you find that it produces
       "unable to remap .... to same address as parent" errors during the
       build phase, then it's time for you to run rebaseall.

       and, if needed, seek further help from the Cygwin mailing list.

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