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reproducible_build: Work around caching issues

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SOURCE_DATE_EPOCH can be expanded early in the parsing process before
the class extensions are applied. This can mean the directory pointed
to for the SDE can be incorrect until later in parsing. Cache the file
name in the cached value and allow it to dynamically update.

This isn't ideal but avoding expansion of the variable likely isn't
possible and I'm not sure how else to handle this. This works around
the issue until a better solution can be found.

(From OE-Core rev: 44dc97cd1223e4d2b635669627ec5f796838d42d)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Richard Purdie
2021-10-03 20:12:26 +01:00
parent a26db5c944
commit 80f2b56ad8
1 changed files with 7 additions and 4 deletions
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11
meta/classes/reproducible_build.bbclass
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@@ -115,11 +115,14 @@ EPOCHTASK = "do_deploy_source_date_epoch"
do_unpack[postfuncs] += "create_source_date_epoch_stamp"
def get_source_date_epoch_value(d):
cached = d.getVar('__CACHED_SOURCE_DATE_EPOCH')
if cached:
epochfile = d.getVar('SDE_FILE')
cached, efile = d.getVar('__CACHED_SOURCE_DATE_EPOCH') or (None, None)
if cached and efile == epochfile:
return cached
epochfile = d.getVar('SDE_FILE')
if cached and epochfile != efile:
bb.debug(1, "Epoch file changed from %s to %s" % (efile, epochfile))
source_date_epoch = int(d.getVar('SOURCE_DATE_EPOCH_FALLBACK'))
try:
with open(epochfile, 'r') as f:
@@ -137,7 +140,7 @@ def get_source_date_epoch_value(d):
except FileNotFoundError:
bb.debug(1, "Cannot find %s. SOURCE_DATE_EPOCH will default to %d" % (epochfile, source_date_epoch))
d.setVar('__CACHED_SOURCE_DATE_EPOCH', str(source_date_epoch))
d.setVar('__CACHED_SOURCE_DATE_EPOCH', (str(source_date_epoch), epochfile))
return str(source_date_epoch)
export SOURCE_DATE_EPOCH ?= "${@get_source_date_epoch_value(d)}"