[Buildroot] CMake and VERBOSE variable

[Cédric Marie]

Hi,

Le 31/08/2015 09:28, Thomas Petazzoni a écrit :
> Arnout, Cédric,
>
> On Sun, 23 Aug 2015 01:10:39 +0200, Arnout Vandecappelle wrote:
>
>>   For autotools it depends a lot on the version. Relatively recent automake (at
>> least 1.15) has the V=0/1 option, but it defaults to 1 I think.
>
> It actually depends on how AM_SILENT_RULES is used:
>
>   * If it's not used, then the build is verbose, and V=0/1 has no effect.
>
>   * If AM_SILENT_RULES is used, with no special argument, then it
>     defaults to verbose (V=1), but can be made quiet by passing V=0
>
>   * If AM_SILENT_RULES([yes]) is used, then it defaults to quiet (V=0)
>     and can be made verbose by passing V=1.


So I think the best way to manage it is to be explicit: "V=0" when 
nothing is specified (because we want the default to be silent), and 
"V=1" when V=1 from the command line.
In worst case, it is not taken into account.
Otherwise, it is correctly managed, whatever the default setting of 
AM_SILENT_RULE.

NB: I said that the behaviour was kept unchanged, but in fact there is 
one case that seems to be better handled with my modification: when 
AM_SILENT_RULES is used without argument (i.e. the default is verbose). 
Now we turn it to quiet by forcing explicit V=0.


-- 
Cédric