Hello, we use a script to generate updates for our products; it is
contained inside a git repo (let's call it "gen-update") with a cmake file
describing each sub-projects tags for the tagged update (example [1]).
We also generate a new rootfs to have up-to-date machines during their
manufacture.
I tried a few things and discovered that a recipe cannot export variables,
and adding the "gen-update" repo inside each sub-projects SRC_URI was not
working because their PV need to be defined first.
I managed to get a half-working solution:
- create a "gen-update.bb" [2], its only aim it to download the tagged
"update.cmake" [1]
- create a "gen-update-parser.bbclass" [3] to export the variables
Each sub-projects use them inside with "SRC_URI" and "inherit".
It has a lot of issues:
1/ the biggest one, everytime I change the "gen-update.bb" PV [2] and
generate a new image, every sub-projects fail with a "metadata is not
deterministic" [4]
If I add a whitespace or simply run "touch" on the bb files bitbake
works again.
2/ the hard-coded file path inside "gen-update-parser.bbclass" [3]
By the way I'm surprised it's in the "work/cortexa53-crypto-fslc-linux"
folder, not inside "work/all-fslc-linux"
3/ sometimes the "gen-update.bb" [2] is not unpacked and the parser fails
What would be the correct way to do that?
Thanks.
####################
[1] update.cmake:
set(PROJECT_FOO "1.2")
set(PROJECT_BAR "2.6")
...
####################
[2] gen-update.bb:
SRC_URI = "git://git@our_server
/gen-update.git;protocol=ssh;nobranch=1;tag=${PV}"
PV = "update-2.0"
####################
[3] gen-update-parser.bbclass:
python () {
import re
import glob
with
open(glob.glob(d.expand('${BASE_WORKDIR}/cortexa53-crypto-fslc-linux/gen-update/*/git/update.cmake'))[0],
'r') as f:
for line in f:
vars = re.split("\(|\)|\s+", line)
d.setVar(vars[1], vars[3].strip('\"'))
}
####################
[4] checksum mismatch error example:
ERROR: When reparsing project_foo.bb:do_patch, the basehash value changed
from 14abf321 to 4af89bb2. The metadata is not deterministic and this needs
to be fixed.
For each subprojects, multiple similar error messages for project_foo.bb:
do_patch/do_fetch/do_unpack/do_configure/do_compile/do_install...
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