[OE-core] How to force BitBake to track dependency to METADATA_REVISION?

[Kucharczyk, Bartlomiej (Nokia - PL/Wroclaw)]

> Bitbake tracks unexpanded forms of variables, not expanded. So it's literally storing '${@base_detect_revision(d)}" in the checksum, not the actual revision.
> METADATA_REVISION[vardepvalue] = "${METADATA_REVISION}" in your recipe will do it.

Hello! 

Thanks for your answer. I've tried to use vardepvalue, but it does not work... After I build it for the second time (after bumping git revision), nothing is rebuilt.

    $ bitbake test
    ...
    NOTE: Tasks Summary: Attempted 251 tasks of which 0 didn't need to be rerun and all succeeded.
    ...
    $ echo "" >> ../README
    $ git commit -m"test" ../README
    $ bitbake test
    ...
    NOTE: Tasks Summary: Attempted 251 tasks of which 251 didn't need to be rerun and all succeeded.
    ...

My test recipe is:

    $ cat ../meta/recipes-devtools/test/test_1.0.bb
    LICENSE = "CLOSED"
    INHIBIT_DEFAULT_DEPS = "1"
    METADATA_REVISION[vardepvalue] = "${METADATA_REVISION}"
    do_compile(){
        echo "${METADATA_REVISION}" > "${S}/testfile"
    }

Any suggestions?

Bartek