Re: is it "PROVIDES =" or "PROVIDES +=" for setting an alternate name?

["Robert P. J. Day" <rpjday@crashcourse.ca>]

On Sat, 12 Jul 2014, Christopher Larson wrote:

> On Sat, Jul 12, 2014 at 4:28 AM, Robert P. J. Day <rpjday@crashcourse.ca>
> wrote:
>
> >   i notice that the OE-core codebase likes to mix these two forms of
> > using PROVIDES. for instance, for a number of libraries to provide
> > their basename, i see stuff like:
> >
> > recipes-graphics/xorg-lib/libxmu_1.1.2.bb:PROVIDES = "xmu"
> > recipes-graphics/xorg-lib/libice_1.0.8.bb:PROVIDES = "ice"
> > recipes-graphics/xorg-lib/libxdamage_1.1.4.bb:PROVIDES = "xdamage"
> > recipes-graphics/xorg-lib/libxfont_1.4.7.bb:PROVIDES = "xfont"
> > recipes-graphics/xorg-lib/libxdmcp_1.1.1.bb:PROVIDES = "xdmcp"
> >
> >   on the other hand, there is the occasional example of the same thing
> > that uses "PROVIDES +=" instead:
> >
> > recipes-support/libpcre/libpcre_8.35.bb:PROVIDES += "pcre"
> >
> > is there a deliberate distinction made in the recipes between these
> > two forms?
> >
>
> I don't think there's ever a valid reason to not use +=, unless it
> explicitly wants to remove something. That said, bitbake hardcodes
> addition of ${PN} to the PROVIDES list regardless of what the recipe
> says, so I expect from a practical perspective there isn't a
> difference. That said, I do think they should be switched to += to
> more accurately reflect the intent, and to improve future
> compatibility (e.g. if the default PROVIDES in bitbake.conf were to
> change).

  ok, i'm good with that, thanks.

rday

-- 

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Robert P. J. Day                                 Ottawa, Ontario, CANADA
                        http://crashcourse.ca

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