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package infra: do not check hashes when downloading from a repository

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When downloading from a repository, we have no way to ensure the
reproducibility of the generated archives, so we can't check the hashes.

Do not specifiy a hash file in those cases.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Reviewed-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Reviewed-by: Samuel Martin <s.martin49@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Yann E. MORIN
2015-04-01 00:15:02 +02:00
committed by Thomas Petazzoni
parent c22fe04a78
commit 1286222597
2 changed files with 6 additions and 5 deletions
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6
docs/manual/adding-packages-directory.txt
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@@ -471,4 +471,10 @@ environment variable +BR2_ENFORCE_CHECK_HASH+ to a non-empty value, and
there is no hash for a downloaded file, Buildroot considers this an
error, deletes the downloaded file, and aborts.
Sources that are downloaded from a version control system (git, subversion,
etc...) can not have a hash, because the version control system and tar
may not create exactly the same file (dates, files ordering...), so the
hash could be wrong even for a valid download. Therefore, the hash check
is entirely skipped for such sources.
If the +.hash+ file is missing, then no check is done at all.