On Thu, Apr 2, 2020, 3:42 PM Richard Purdie <
[email protected]> wrote:

> On Thu, 2020-04-02 at 13:08 -0500, Joshua Watt wrote:
> > Don't capture the source date epoch for recipes that are not being
> > finalized. This prevents a virtual recipe (e.g. multilib) from
> > attempting to read the source date epoch file from the non-virtual
> > recipes workdir.
> >
> > [YOCTO #13851]
> >
> > Signed-off-by: Joshua Watt <[email protected]>
> > ---
> >  meta/classes/reproducible_build.bbclass | 14 ++++++++++++++
> >  1 file changed, 14 insertions(+)
>
> What puzzles me with this is that we're telling bitbake to ignore the
> variable for hashing purposes, yet it still goes ahead and executes it.
>
> If we decide that is a bug, we can come up with the patch that follows
> below, which I think should also fix this issue and perhaps some
> others?
>

It definitely seems like a good thing to do, question is can we make this
change so close to the release? The very rare SDE race is the only thing I
know of that is fixed by this, which seems like very little pay off for a
lot of risk... We could do both changes; mine now for the release, then let
this one soak on master for a while and backport if all is well.



> data/siggen: Don't expand ignored variables
>
> Signed-off-by: Richard Purdie <[email protected]>
> ---
>  bitbake/lib/bb/data.py       | 4 ++--
>  bitbake/lib/bb/siggen.py     | 2 +-
>  bitbake/lib/bb/tests/data.py | 2 +-
>  3 files changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/bitbake/lib/bb/data.py b/bitbake/lib/bb/data.py
> index 6dc02172cb..b0683c5180 100644
> --- a/bitbake/lib/bb/data.py
> +++ b/bitbake/lib/bb/data.py
> @@ -365,7 +365,7 @@ def build_dependencies(key, keys, shelldeps,
> varflagsexcl, d):
>      #bb.note("Variable %s references %s and calls %s" % (key, str(deps),
> str(execs)))
>      #d.setVarFlag(key, "vardeps", deps)
>
> -def generate_dependencies(d):
> +def generate_dependencies(d, whitelist):
>
>      keys = set(key for key in d if not key.startswith("__"))
>      shelldeps = set(key for key in d.getVar("__exportlist", False) if
> d.getVarFlag(key, "export", False) and not d.getVarFlag(key, "unexport",
> False))
> @@ -380,7 +380,7 @@ def generate_dependencies(d):
>          newdeps = deps[task]
>          seen = set()
>          while newdeps:
> -            nextdeps = newdeps
> +            nextdeps = newdeps - whitelist
>              seen |= nextdeps
>              newdeps = set()
>              for dep in nextdeps:
> diff --git a/bitbake/lib/bb/siggen.py b/bitbake/lib/bb/siggen.py
> index 8bfc45235d..4c8d81c5da 100644
> --- a/bitbake/lib/bb/siggen.py
> +++ b/bitbake/lib/bb/siggen.py
> @@ -146,7 +146,7 @@ class SignatureGeneratorBasic(SignatureGenerator):
>      def _build_data(self, fn, d):
>
>          ignore_mismatch = ((d.getVar("BB_HASH_IGNORE_MISMATCH") or '') ==
> '1')
> -        tasklist, gendeps, lookupcache = bb.data.generate_dependencies(d)
> +        tasklist, gendeps, lookupcache = bb.data.generate_dependencies(d,
> self.basewhitelist)
>
>          taskdeps, basehash = bb.data.generate_dependency_hash(tasklist,
> gendeps, lookupcache, self.basewhitelist, fn)
>
> diff --git a/bitbake/lib/bb/tests/data.py b/bitbake/lib/bb/tests/data.py
> index 2b137706dd..5f195047de 100644
> --- a/bitbake/lib/bb/tests/data.py
> +++ b/bitbake/lib/bb/tests/data.py
> @@ -476,7 +476,7 @@ class Contains(unittest.TestCase):
>  class TaskHash(unittest.TestCase):
>      def test_taskhashes(self):
>          def gettask_bashhash(taskname, d):
> -            tasklist, gendeps, lookupcache =
> bb.data.generate_dependencies(d)
> +            tasklist, gendeps, lookupcache =
> bb.data.generate_dependencies(d, set())
>              taskdeps, basehash =
> bb.data.generate_dependency_hash(tasklist, gendeps, lookupcache, set(),
> "somefile")
>              bb.warn(str(lookupcache))
>              return basehash["somefile:" + taskname]
>
>
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