[Buildroot] [PATCH v3] qt: add font license information

[Arnout Vandecappelle <arnout@mind.be>]

On 02/27/16 22:00, Peter Seiderer wrote:
> Hello Danomi,
> 
> On Sat, 27 Feb 2016 11:38:39 -0500, Danomi Manchego <danomimanchego123@gmail.com> wrote:
> 
>> > Peter S.,
>> > 
>> > On Thu, Feb 25, 2016 at 5:34 PM, Peter Seiderer <ps.report@gmx.net> wrote:
>>> > > With this implementation, the different licenses will be separated with
>>> > > <space><comma>. This is not nice, but to avoid it a pretty ugly construct
>>> > > is needed:
>>> > >
>>> > > QT_LICENSE = $(shell echo $(QT_LICENSE_BITS) | sed 's% , %, %g')
>>> > >
>>> > > Since the <space><comma> is just a minor nuisance, we're not going to that kind
>>> > > of complexity.
>>> > >
>> > 
>> > The <space><comma> can be avoided during variable construction by doing this:
>> > 
>> > QT_LICENSE := BlahBlah
>> > 
>> > ifeq ...
>> > QT_LICENSE:=$(QT_LICENSE), MoreBlahBlah
>> > 
>> > If you don't mind the X:=$(X) part, that is.  IIRC, buildroot did a
>> > pass not long ago removing := from assignments that didn't actually
>> > need it.
>> > 
> Thanks for the tip, tried it and works for me ;-), but [1] states:
> 
>   Simply expanded variables are defined by lines using ?:=? or ?::=? (see Setting
>   Variables). Both forms are equivalent in GNU make; however only the ?::=? form
>   is described by the POSIX standard (support for ?::=? was added to the POSIX
>   standard in 2012, so older versions of make won?t accept this form either). 
> 
> Maybe this was the reason to avoid it in buildroot?

 Not at all - we use loads of GNU make specific things, like functions.

 There is no big reason to avoid :=, only for consistency we prefer to use =
everywhere. So in this case it would be OK to use :=. Note however that there
should be spaces around it (any whitespace after = will be stripped).

 Regards,
 Arnout

-- 
Arnout Vandecappelle                          arnout at mind be
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