[Buildroot] [PATCHv4] package/ccache: do not force colored diagnostics

[Peter Korsgaard]

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

 > When GCC_COLORS is set, ccache passes '-fdiagnostics-color' to GCC but
 > this flag requires GCC v4.9 or later. Older versions complain about the
 > unrecognized command line option.

 > Using GCC_COLORS in the context of Buildroot is seldom useful, so we
 > just unexport GCC_COLORS altogether.

 > Reported-by: Carlos Santos <casantos at datacom.ind.br>
 > Signed-off-by: "Yann E. MORIN" <yann.morin.1998 at free.fr>
 > Cc: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
 > Cc: Arnout Vandecappelle <arnout at mind.be>

Committed, thanks.

-- 
Bye, Peter Korsgaard