[Buildroot] [pull request] Pull request for branch yem/providers

[Yann E. MORIN]

From: "Yann E. MORIN" <yann.morin.1998 at free.fr>

Hello All!

This series is a third attempt at trying to fix the BR2_EXTERNAL issue,
in that packages in BR2_EXTERNAL can't be providers of an implementation
for a virtual package, such as libegl.

The basic idea behind this series is that Arnout found it ugly that
virtual packages had to each be aware of all their possible providers.
For example, libegl.mk had four conditional dependencies, one for each
of the builtin providers (freescale's vivante, rpi, TI's gfx, or
Allwinner's sunxi mali).

This would prohibit a package in BR2_EXTERNAL to provide another
implementation (eg. with an in-house proprietary, non-public package),
since the virtual package's rules were evaluated even before we had
a chance to parse BR2_EXTERNAL, and thus either requiring the new
dependency to be added to the virtual package (hence defeating one
of the selling-point of BR2_EXTERNAL0, or not allow external packages
to provides implementations (hence killing that same selling-point of
BR2_EXTERNAL as well).

So, Arnout suggested (and I was already working on it) that packages
would declare themselves as providers, all in a single Kconfig variable,
so the virtual package would just have to depend on that single,
Kconfig-set variable.

This is what this series does for each virtual packages:
  - moves the virtual package definition to its own Config.in
  - introduces the string option BR2_PACKAGE_PROVIDES_xxxx
  - changes all providers to default that variable to thier own name

for each of: opengl-egl, opengl-es, openmax, openvg, and powervr.

If anyone is feeling like writing a blurb in the manual, just feel free
to go ahead and add a section about virtual packages! ;-p

Regards,
Yann E. MORIN.


The following changes since commit cbb6cdc69cb3f0cfb8783c1fef7e878a43da8567:

  libcurl: security bump to version 7.34.0 (2013-12-19 23:17:25 +0100)

are available in the git repository at:

  git://gitorious.org/buildroot/buildroot.git yem/providers

for you to fetch changes up to e3300b74a954f422626703e3402206636cf35043:

  package/powervr: switch to package-defined providers (2013-12-20 00:01:42 +0100)

----------------------------------------------------------------
Yann E. MORIN (5):
      package/opengl/libegl: switch to package-defined providers
      package/opengl/libgles: switch to package-defined providers
      package/opengl/libopenvg: switch to package-defined providers
      package/opengl/libopenmax: switch to package-defined providers
      package/powervr: switch to package-defined providers

 package/bellagio/Config.in                       |  7 +++++++
 package/freescale-imx/gpu-viv-bin-mx6q/Config.in |  6 ++++++
 package/opengl/Config.in                         | 15 ++++-----------
 package/opengl/libegl/Config.in                  |  6 ++++++
 package/opengl/libegl/libegl.mk                  | 17 +----------------
 package/opengl/libgles/Config.in                 |  6 ++++++
 package/opengl/libgles/libgles.mk                | 17 +----------------
 package/opengl/libopenmax/Config.in              |  6 ++++++
 package/opengl/libopenmax/libopenmax.mk          |  9 +--------
 package/opengl/libopenvg/Config.in               |  6 ++++++
 package/opengl/libopenvg/libopenvg.mk            |  5 +----
 package/powervr/Config.in                        |  4 ++++
 package/powervr/powervr.mk                       |  5 +----
 package/rpi-userland/Config.in                   | 16 ++++++++++++++++
 package/sunxi-mali/Config.in                     |  6 ++++++
 package/ti-gfx/Config.in                         |  9 +++++++++
 16 files changed, 81 insertions(+), 59 deletions(-)
 create mode 100644 package/opengl/libegl/Config.in
 create mode 100644 package/opengl/libgles/Config.in
 create mode 100644 package/opengl/libopenmax/Config.in
 create mode 100644 package/opengl/libopenvg/Config.in

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