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README

PTXdist
=======

Necessary Packages
------------------

In order to build ptxdist, you need this archive:

	ptxdist-<version>.tgz

Extract this archive into some build directory.

Installation
------------

To install PTXdist, just run

	./configure --prefix=<installpath>

to configure the packet, then

	make

to build everything and

	make install

to install it. When you start using PTXdist, make sure your $PATH
environment variable points to <installpath>/bin, because that's where
the ptxdist frontend program is being installed to.

For developers who want to work with git versions of PTXdist it is only
necessary to run "./autogen.sh && ./configure && make" and set the PATH
variable to the bin/ directory inside the PTXdist tree.


Quickstart
----------

Read the "How to become a PTXdist Guru" guide to get an idea how PTXdist works.
This document can be found here:

http://www.pengutronix.de/software/ptxdist/appnotes/OSELAS.BSP-Pengutronix-Generic-arm-Quickstart.pdf


Idea
----

PTXdist is a tool which can be used to generate a root tree for all
kinds of Linux systems. It was written with embedded systems in mind,
but there is no reason why you can't use it to configure your firewall,
router or whatever dedicated "device" comes to your mind.

The job works like this: you run 'ptxdist menuconfig' and
"ptxdist platformconfig", configure what you need. Run 'ptxdist go'
and you'll find a root tree in <you-platform>/root/. Voila.

All magic necessary to do these things in a cross enviroment are written
into "recipies", living in rules/*.make, and config menues in
rules/*.in.


Directory Layout
----------------

These files and directories are supposed to be in an empty project
directory:

configs/		project specific configurations (optional)
patches/		project specific patches, overwrites the generic
			ones from PTXdist
projectroot/		put files here which are to be copied over to
			the target's root directory, like for example
			etc files, scripts, ... Note that the copying
			has to be done explicitly by some project
			specific rule file.
ptxconfig		.config file to configure the userland for
			your project.
platformconfig		.config file to configure the platform specific
			part of your project.
rules/			contains project specific rules
src -> ...		link to point to your directory containing
			tarball files for the packets.

Additionally some other directories are being built when you run
"ptxdist go" or other start other build targets.

<platform>/build-host/	build directory for host tools
<platform>/build-cross/	build directory for cross tools
<platform>/build-target/ build directory for target tools
<platform>/images/	'ptxdist images' creates tarballs and
			filesystem images in this directory.
<platform>/sysroot-target/ target related libs and headerfiles are going to
			this dir
<platform>/sysroot-cross/ target related tools, but must run on host are
			going to this dir
<platform>/sysroot-host/ host related tools are going to this dir

<platform>/root/	root filesystem for the target
<platform>/state/	state files (show in which state packages
			currently are during the compilation)

For more details look at the output of 'ptxdist --help' or see the
PTXdist manual.

Bugs
----

- search for FIXMEs
- see TODO

For documentation please refer:
-------------------------------

http://www.pengutronix.de/software/ptxdist/documentation_en.html

For Patch Tagging please refer:
-------------------------------

http://dep.debian.net/deps/dep3/

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