[Buildroot] [PATCH] toolchain-external: add a specific check to avoid Angstrom toolchains

[Thomas Petazzoni]

Dear Eric Bénard,

On Sun, 13 Oct 2013 12:48:03 +0200, Eric Bénard wrote:

> Le Sat, 12 Oct 2013 12:14:42 +0200,
> Thomas Petazzoni <thomas.petazzoni at free-electrons.com> a écrit :
> > To avoid this problem in the future, we explicitly check if the
> > toolchain is from Angstrom by looking at the vendor part of the tuple
> > exposed by the toolchain: as soon as it is
> > <something>-angstrom-<something-else>, we reject the toolchain with an
> > explanation.
> > 
> maybe you should also check for at least "oe" and "poky" as these are
> the vendor part of toolchains generated with plain OE-Core or
> Yocto/Poky.

Hum, right. Are those available in the form of tarballs, like the
angstrom toolchain available at
http://www.angstrom-distribution.org/toolchains/ ? I know you can
generate such tarballs with OE or Yocto, but unless these tarballs are
available pre-built on the web, I guess it's pretty unlikely that such
toolchains get used as external toolchains in Buildroot.

Ideally, we would need to check if the toolchain is not a pure
toolchain, but it's quite hard to check. We would have to verify if the
toolchain does *not* have more than what it should have, but doing that
in an exhaustive way is quite difficult.

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com