[Buildroot] Silencing the build

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

Fabio, All,

On 2014-07-21 18:25 +0200, Fabio Porcedda spake thusly:
> On Fri, Jul 18, 2014 at 10:15 PM, Yann E. MORIN <yann.morin.1998@free.fr> wrote:
> > Well, I still believe the build should be verbose by default, otherwise
> > we would miss a lot of important information on bug reports. The problem
> > is where to store the build.log in case of a silent build, so the user
> > can provide it.
> 
> I don't know a way to store the full log (stdout & stderr) and view a
> filtered version of stdout & the unfiltered stderr, maybe you have an
> idea?

    brmake() {
        # This is a bash function, pipefail is not POSIX
        set -o pipefail
        make "${@}" 2>&1 \
        |tee build.log   \
        |sed -r -e '/^.{4}>>>[[:space:]]+(.*).{5}$/!d; s//\1/;'
    }

> > I think the best we can do is document a simple solution (like my little
> > function above, for example).
> 
> Yes, i think it's a good idea.
> 
> I personally prefer using a line like this:
>  make | grep --color=never ">>> "
> to be able to distinguish more easily stdoud messages from stderr messages.

Yes, why not. That's a bit trickier to handle, but no undoable. It would
need playing tricks with redirection and duplicating filedescriptors...

> Nevertheless, I still would like that this patch will be applied because:
> - using "make -s" is still simpler that using some "make | sed
> ........", many tools have a quiet flag for this reason.
> - is a work already done.
> - does not change the usual behavior.
> - it's just adds 12 line of code .

I'll have another look at it...

Regards,
Yann E. MORIN.

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