• Yann E. MORIN's avatar
    package/asterisk: new package · 05e306d8
    Yann E. MORIN authored
    Asterisk: the flagship of telephony on Linux. These are the lines of
    code whose continuous mission is to power small and large enterprises
    telephony systems, to boldly provide IP PBX where no one has done so
    before.
    
    But it is a hell to get compiled... :-(
    
    For starters, it needs a host tool, menuselect, to prepare its build
    configuration. Unfortunately, the way it handles menuselect does not
    apply very well for cross-compilation: the main ./configure calls out to
    menuselect's own ./configure, and of course that runs with the same
    environement, which is wrong for cross-compilation (because of variables
    like CC, CFLAGS and the likes).
    
    Furthermore, the paths to menuselect are imbricated about everywhere in
    the main Makefile, so making it find menuselect in PATH is a lost cause.
    
    Instead, we just patch-out the handling of menuselect, build it as the
    host variant and copy it in place.
    
    Now, asterisk wants to install a default set of sound files (for
    answering machine stuff, I guess). They come come pre-bundled in the
    official archive [0], but the buildsystem will want to download (at
    install time) the sha1 files for each sound archive, to validate that
    said archive is correct. However, the download is done via plain http,
    so it still risks an MITM attack. And for Buildroot, it is not always
    possible to download at install time, so we patch-out the sha1 check.
    
    [0] http://downloads.asterisk.org/pub/telephony/asterisk/releases/
    
    
    
    The official archive contains the sound archives plus a full set of
    documentation. This makes it very big. Unfortunately, the hosting site
    is rather slow, topping at about ~204kbps. So we get the archive from
    the official mirror on Github. But that archive is missing the sound
    archives, so we download them separately.
    
    Some tests, like the crypt() one, are broken and could not have ever
    possibly worked at all. Worse, the FFmpeg test is looking for headers
    that FFmpeg removed more than 10 years ago and are virtually no longer
    available in any distro. So, FFmpeg support is definitely not tested
    by upstream and can't possibly work at all. Finally, trying to run
    test-code does not work in cross-compilation.
    
    As a final stroke of genius, asterisk checks for the re-entrant variant
    of res_ninit(), and concludes that all such functions are available,
    including res_nsearch(). Uclibc-ng has the former but not the latter, so
    the build fails. Since there is no cache variable for that check, we
    can't pre-feed that result to configure, and fixing it is a bigger
    endeavour.  So we make asterisk depend on glibc for now, until someone
    is brave enough to fix it.
    
    Almost all features are disabled for now. Support for additional
    features will be added in subsequent patches now that we have a working
    base.
    Signed-off-by: default avatar"Yann E. MORIN" <yann.morin.1998@free.fr>
    Cc: Romain Naour <romain.naour@openwide.fr>
    Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
    [Arnout:
     - make libilbc a mandatory dependency instead of using the bundled one;
     - add license, license files, and license file hashes;
     - minor spelling corrections;
     - remove redundant trailing backslash reported by check-package;
     - rewrap help text to 72 columns instead of 68]
    Signed-off-by: default avatarArnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
    
    fixup
    05e306d8