[oe-commits] [openembedded-core] 02/24: bitbake.conf: Account for older versions of bitbake

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rpurdie pushed a commit to branch warrior
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commit ca38b2f88f640579703486645b0c4d9ecef78e47
Author: Joshua Watt <jpewhacker at gmail.com>
AuthorDate: Wed May 1 15:35:23 2019 -0500

    bitbake.conf: Account for older versions of bitbake
    
    Older versions of bitbake (prior to 1.42) don't expose the BB_UNIHASH
    variable which is being used by sstate. For compatibility with these
    older versions of bitbake, set BB_UNIHASH to BB_TASKHASH (which is the
    value it should be for non-hash equivalent aware signature generators).
    if bitbake hasn't already set it.
    
    [YOCTO #13314]
    
    Signed-off-by: Joshua Watt <JPEWhacker at gmail.com>
    Signed-off-by: Richard Purdie <richard.purdie at linuxfoundation.org>
    Signed-off-by: Armin Kuster <akuster808 at gmail.com>
---
 meta/conf/bitbake.conf | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/meta/conf/bitbake.conf b/meta/conf/bitbake.conf
index 7f8b043..b4e8990 100644
--- a/meta/conf/bitbake.conf
+++ b/meta/conf/bitbake.conf
@@ -898,3 +898,9 @@ BB_SIGNATURE_EXCLUDE_FLAGS ?= "doc deps depends \
 
 MLPREFIX ??= ""
 MULTILIB_VARIANTS ??= ""
+
+# Older versions of bitbake (< 1.42) don't set BB_UNIHASH. For compatibility with these
+# versions, set BB_UNIHASH equivalent to BB_TASKHASH if unspecified, which is
+# what it would be anyway if the signature generator (e.g. OEEquivHash) doesn't
+# support unihashes.
+BB_UNIHASH ?= "${BB_TASKHASH}"

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