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88 lines
3.1 KiB
Plaintext
88 lines
3.1 KiB
Plaintext
Hacking vlc
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===========
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First
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-----
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- Read this file
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- Read the information present on http://www.videolan.org/developers/
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Requirements
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____________
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You will need the following tools if you plan to use the GIT version of vlc:
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- Autoconf version 2.60 or later
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- Automake version 1.9 or later
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- gettext version 0.16.1 or later
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- pkg-config
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- libgcrypt 1.2 (or compatible)
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After retrieving the GIT tree, you need to run the bootstrap script to
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generate all the files needed to build vlc. You can then run configure.
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Run ./configure --help for a description of the available options.
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If you do not have the correct version of these tools, or if they are
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simply not available for the operating system you plan to develop on,
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you can check out a GIT tree on an OS that provides these tools (such
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as a recent Linux distribution), run bootstrap, and then copy the whole
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tree to your retarded OS.
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There is a possibility that, at some point, automake might segfault. The
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reason is unsufficient stack size, and can be easily fixed with the
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`ulimit` command (or an equivalent) available in most shells. For instance
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on bash 2.0, the following command solves the automake crash on Mac OS X :
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ulimit -s 20000
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The bootstrap sequence
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----------------------
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The bootstrap script does the following actions:
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- parse configure.ac for all Makefiles in the modules/ directory that need
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to be generated, and look for available modules in the corresponding
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Modules.am file. A module "foo" exists if there is a Modules.am file in
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the modules/ directory which defines SOURCES_foo.
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- create a top-level Modules.am file (which will be included by Makefile.am)
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which contains additional build rules for modules, and includes all the
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Modules.am files that were found in modules/
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- create an m4/private.m4 from configure.ac, generating m4 macros that will
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be needed by configure.ac.
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- create a Makefile.am file for each Modules.am file found in modules/ .
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- run autopoint (previously gettextize) to create an intl/ directory,
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needed when libgettext is not available.
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- run the usual aclocal, autoheader, automake and autoconf, which create
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the various Makefile.in files from the corresponding Makefile.am and the
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configure script from configure.ac.
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- fix a few files in the vlc repository that may have been altered.
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How to add a module
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-------------------
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To add a module to the repository, just add its sources to a Modules.am
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file. If you add a new directory you will need to create a new Modules.am,
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inside that directory. Do not forget to add a corresponding
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Makefile line at the end of configure.ac for this new Modules.am file.
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To have the module built, you need to add a call to VLC_ADD_PLUGIN or
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VLC_ADD_BUILTINS to configure.ac with your new module name as argument.
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Look at other modules for guidelines on how to add build and linkage options.
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After changing configure.ac you will always need to rerun bootstrap and
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configure.
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VLC keeps a cache of its modules (in ~/.cache/vlc/ on Linux), so you'll have to
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delete it (or use vlc --reset-plugins-cache). Then use vlc -vvv --color --list
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to check that your plugin is seen by VLC.
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