[Buildroot] [PATCH 4/4] graphs: support generating png graphs

[Thomas Petazzoni]

Dear Yann E. MORIN,

On Sat, 28 Dec 2013 00:12:52 +0100, Yann E. MORIN wrote:

>  	@echo '  make V=0|1             - 0 => quiet build (default), 1 => verbose build'
>  	@echo '  make O=dir             - Locate all output files in "dir", including .config'
>  	@echo '  make GRAPH_ALT=1       - use alternate color-scheme for build-time graphs'
> +	@echo '  make GRAPH_OUT=pdf|png - generate either pdf (default) or png graphs'

I'm a little bit concerned about these variables. They are specific to
the graph-build-time thing, but still they clutter the 'make help'
output, just for some very special functionality.

Since it's quite specific, shouldn't we just document them in the
manual instead, and keep only the graph-build target in make help?

Thanks!

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