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Obtaining and installing a Midipix distribution
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===============================================
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A Midipix distribution consists of the following:
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* the native Midipix toolchain, consisting of perk, gcc, its dependencies,
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  and binutils,
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* musl, a lightweight, fast, simple, and free libc[1] used by Midipix,
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* the Midipix runtime components that bridge the gap between the libc and the
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  executive subsystems of all Windows NT-derived Windows OS starting with and
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  including Windows XP, and
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* a steadily increasing number of 3rd party open source packages, as expected in
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  any modern POSIX-compliant *nix environment, including GNU coreutils, shells,
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  libraries such as ncurses, libressl, as well as Perl and Python.
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Compressed Midipix distribution tarballs and, separately, source tarballs are,
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at present, produced every four (4) hours UTC after each successful build and
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subsequently signed. This process is fully automated by a portable Bourne shell
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script; all of the above mentioned components are cross-compiled.
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Thus, the most hassle-free way to get started with Midipix is to simply download
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the most recent distribution tarball and follow the instructions below. It is,
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however, recommended to anyone intending to use Midipix as a development platform
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to familiarise themselves with the build process. Other reasons to prefer building
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a Midipix distribution yourself include integrating new 3rd party software or local
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runtime component patches. At present, a full build from scratch, excluding tarballs,
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takes between 1 and 2 hours to finish on an 8-core Xeon 3.5 GHz host.
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The build script can be obtained from the following GitHub repository: <https://github.com/lalbornoz/midipix_build>.
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If you obtained a Midipix distribution tarball, extract it into a directory and
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drive of your choice, henceforth referred to as target directory; the drive can
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be a network drive.
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If you built Midipix yourself, the target directory is equivalent to the ${PREFIX}
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configured in build.vars, which defaults to ${HOME}/midipix.
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Previously, this repository contained a shell script for usage within Cygwin
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and a VBS script in order to obtain a Midipix shell environment. These have been
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replaced with <https://git.midipix.org/cgit.cgi/mpackage/plain/distro/bash.cmd>
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from the Midipix distro skeleton[2]. In that respect, and as a general rule,
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midipix_build provides all the bits needed for (cross-)building the framework
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along with the entire collection of third-party software packages, whereas
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mpackage's task is to create a live execution environment (midipix-on-the-fly,
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or mxfly), optionally including with it a set of tarballs for the installation
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of a custom, midipix-based distribution.
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References:
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* Sun, 24 Apr 2016 09:04:08 +0000 [1] musl FAQ <http://www.musl-libc.org/faq.html>
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* Mon, 14 May 2018 17:15:26 +0000 [2] <https://git.midipix.org/cgit.cgi/mpackage/plain/README>
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Linux distribution-related errata
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=================================
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Busybox based distributions need the gawk, gsed, and coreutils packages to build perl.