[yocto] Using ${SRCVP} in PR of BB file

[Paul Eggleton]

Hi Ian,

On Wednesday, 29 March 2017 9:27:01 AM NZDT Ian Welch wrote:
>       We are preparing to move to PRservice in Yocto to handle auto rolling
> our revisions on every build. As an interim step we are doing some
> reordering or our current PR and PV parameters in our bitbake files. Our
> current syntax is as follows and works as expected
> 
> ----BB File----
> SRC_URI =
> "git://myrepo.git;branch=mybranch;subpath=Linux/bcastforwd;destsuffix=Linux/
> bcastforwd;protocol=ssh" SRCREV = "${AUTOREV}"
> PV = "1.1"
> PR = "r0"
> PV_append = "+git${SRCPV}"
> 
> ----Output from build----
> 
> bcastforwd_1.0-r0git0+afc68d4a00_arm926ejste.ipk
> 
> 
> 
> When we change git${SRCPV} to append to the PR we get "AUTOINC" in place of
> the revision number
> 
> ----BB File----
> "git://myrepo.git;branch=mybranch;subpath=Linux/bcastforwd;destsuffix=Linux/
> bcastforwd;protocol=ssh" SRCREV = "${AUTOREV}"
> PV = "1.1"
> PR = "r0"
> PR_append = "+git${SRCPV}"
> 
> ----ipk Output from build----
> 
> bcastforwd_1.0-r0gitAUTOINC+afc68d4a00_arm926ejste.ipk
> 
> 
> I took a look at the package.bbclass file which appears to be the
> magic sauce for searching and replacing the "AUTOINC" string but
> nothing jumped out at me as to why this would work for PV but not PR.

It's doing the replacement on PKGV, which is the equivalent of PV at the 
packaging end of things. We don't apply the replacement to PKGR, which is the 
equivalent to PR.
 
> Is it possible to support AUTOREV on PR?

The code isn't designed to handle that - the convention is to put it into PV 
and have the AUTOINC value ensure that the version increments properly. Aside 
from the preceding "r", PR is typically just a number.

Cheers,
Paul

-- 

Paul Eggleton
Intel Open Source Technology Centre