[yocto] Bitbake local.conf variable been override by weak assignment

[Rick Liu]

oops~
After I purged build/tmp and build/cache,
it just works,
so it's probably just cache issue.

# $BRCM_NXT-RELEASE-216_BRANCH [2 operations]
#   set /home/rl891036/scrach/DHELPDESK-3176/poky/build/conf/local.conf:60
#     "SIT_int_nxt_v216.1.15.0"
#   set? /home/rl891036/scrach/DHELPDESK-3176/poky/build/../meta-brcm/meta-datacenter/recipes-kernel/nxt-l2-drv/brcm-nxt-l2-drv_nxtrelease.bb:10
#     "RICK"
# pre-expansion value:
#   "SIT_int_nxt_v216.1.15.0"
BRCM_NXT-RELEASE-216_BRANCH="SIT_int_nxt_v216.1.15.0"

On Wed, Aug 14, 2019 at 1:18 PM Rick Liu <rick.liu at broadcom.com> wrote:
>
> I have defined a global default value BRCM_NXT-RELEASE-216_BRANCH in local.conf,
> and setup a weak assignment (?=) in my recipe,
> but somehow the weak assignment override the local.conf global default value.
> Does anyone have any idea?
>
> build/conf/local.conf:
> BRCM_NXT-RELEASE-216_BRANCH = "SIT_int_nxt_v216.1.15.0"
> PREFERRED_VERSION_brcm-nxt-l2-drv = "nxtrelease%"
>
> meta-brcm/meta-datacenter/recipes-kernel/nxt-l2-drv/brcm-nxt-l2drv_nxtrelese.bb:
> BRCM_NXT-RELEASE-216_BRANCH ?= "RICK"
>
> $ bitbake -e brcm-nxt-l2-drv
> # $BRCM_NXT-RELEASE-216_BRANCH [2 operations]
> #   set /home/rl891036/scrach/DHELPDESK-3176/poky/build/conf/local.conf:60
> #     [_defaultval] "SIT_int_nxt_v216.1.15.0"
> #   set? /home/rl891036/scrach/DHELPDESK-3176/poky/build/../meta-brcm/meta-datacenter/recipes-kernel/nxt-l2-drv/brcm-nxt-l2-drv_nxtrelease.bb:10
> #     "RICK"
> # pre-expansion value:
> #   "RICK"
> BRCM_NXT-RELEASE-216_BRANCH="RICK"