[Buildroot] [PATCH] binutils: Add user support for fetching from git.

[Yann E. MORIN <yann.morin.1998@free.fr>]

Andrew, All,

On 2014-11-21 23:32 +0000, Andrew Burgess spake thusly:
> This change adds a new option "from git repository" to the list of
> available binutils versions.  Selecting this allows the user to input
> the URL of a git repository, and the version to use from the
> repository.
> 
> The ARC target, which previously was hard coding a git URL and version
> into binutils.mk switches to this new scheme, moving the URL and
> version into Config.in.host.

Thank you for your contribution, and sorry for the delay in answering.

The fact that we need a git revision for arc is just happenstance, we
could well point to a tarball of that tag instead of getting it from
git; we do not use a tarball because none is available to our knowledge,
and thus we have to use the git tree.

However, this is creating an imbalance between binutils and gcc/glibc/...
and basically all other packages (except very few critical ones) for
which we do not offer a choice to use a random git tree or commit.

Moreover, we believe this situation is better served by using the
_OVERRIDE_SRCDIR feature, see:
    http://nightly.buildroot.org/#_advanced_usage

    8.11.6. Using Buildroot during development

    [...] Buildroot provides a specific mechanism for this use case: the
    <pkg>_OVERRIDE_SRCDIR mechanism. Buildroot reads an override file,
    which allows the user to tell Buildroot the location of the source
    for certain packages.

In this case, you would have to provide:

    HOST_BINUTILS_OVERRIDE_SRCDIR=/path/to/your/arc-binutils

Regards,
Yann E. MORIN.

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