<div dir="ltr">I've also noticed that the kernel.bbclass says:<div><div><br></div><div> # kernel sources do not use do_unpack, so SOURCE_DATE_EPOCH may not</div><div> # be set....</div></div><div><br></div><div>but with git grep <span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">SOURCE_DATE_EPOCH I don't see any code in bitbake or oe-core where this would be set in do_unpack (in oe-core/master and oe-core/rocko). Is this part still only in one of your contrib branches for reproducible?</span></div><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><br></span></div><div><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:small;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">Regards,</span></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Sun, Mar 18, 2018 at 3:06 PM, Martin Jansa <span dir="ltr"><<a href="mailto:martin.jansa@gmail.com" target="_blank">martin.jansa@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div>Hi,</div><div><br></div>There seems to be small issue when people set <span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">BUILD_REPRODUCIBLE_<wbr>BINARIES = "1" without exporting <span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">SOURCE_DATE_EPOCH like this .bbclass does</span></span><div><span style="font-size:12.8px"><br></span></div><div><span style="font-size:12.8px">In kernel.bbclass change from:<br></span><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"></span><div><a href="http://git.openembedded.org/openembedded-core/commit/meta/classes/kernel.bbclass?id=012a70da7ae0617740cd0cf807d01c3cd912c823" target="_blank">http://git.openembedded.org/<wbr>openembedded-core/commit/meta/<wbr>classes/kernel.bbclass?id=<wbr>012a70da7ae0617740cd0cf807d01c<wbr>3cd912c823</a><br></div></div><div><br></div><div>you're comparing <span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">SOURCE_DATE_EPOCH with 0 which doesn't seem to be set anywhere, so by default it's empty which leads to kernel build failure like this:</span></div><div><span style="text-align:start;text-indent:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><div><span style="font-size:12.8px"><br></span></div><div><span style="font-size:12.8px">DEBUG: Executing shell function do_compile</span></div><div><span style="font-size:12.8px">date: invalid date '@'</span></div><div><span style="font-size:12.8px">WARNING: exit code 1 from a shell command.</span></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-transform:none;white-space:normal;word-spacing:0px"><br></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-transform:none;white-space:normal;word-spacing:0px">because empty SOURCE_DATE_EPOCH is used in "ts=`LC_ALL=C date -d @$SOURCE_DATE_EPOCH`". Testing SOURCE_DATE_EPOCH for empty or "0" allows to use REPRODUCIBLE_TIMESTAMP_<wbr>ROOTFS as a default value again.</div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-transform:none;white-space:normal;word-spacing:0px"><br></div><div style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-transform:none;white-space:normal;word-spacing:0px">These build failures seem to be triggered in all my builds since kernel.bbclass was fixed to respect BUILD_REPRODUCIBLE_BINARIES in:</div><div><span style="font-size:12.8px"><a href="http://git.openembedded.org/openembedded-core/commit/meta/classes/kernel.bbclass?id=27f87bbc8395a2481ef808465a62d213a6b678ac" target="_blank">http://git.openembedded.org/<wbr>openembedded-core/commit/meta/<wbr>classes/kernel.bbclass?id=<wbr>27f87bbc8395a2481ef808465a62d2<wbr>13a6b678ac</a></span><br></div><div><span style="font-size:12.8px"><br></span></div><div><span style="font-size:12.8px">One way to fit it would be to inherit <span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">reproducible_</span><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">build_<wbr>simple.bbclass, but this requirement to set exported SOURCE_DATE_EPOCH doesn't seem to be documented anywhere and looking at kernel.bbclass changes it probably wasn't even intended like that.</span></span></div><div><span style="font-size:12.8px"><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline"><br></span></span></div><div><span style="font-size:12.8px"><span style="color:rgb(34,34,34);font-family:arial,sans-serif;font-size:12.8px;font-style:normal;font-variant-ligatures:normal;font-variant-caps:normal;font-weight:400;letter-spacing:normal;text-align:start;text-indent:0px;text-transform:none;white-space:normal;word-spacing:0px;background-color:rgb(255,255,255);text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">Thanks</span></span></div></span></div></div><div class="HOEnZb"><div class="h5"><div class="gmail_extra"><br><div class="gmail_quote">On Mon, Mar 12, 2018 at 11:06 PM, <span dir="ltr"><<a href="mailto:git@git.openembedded.org" target="_blank">git@git.openembedded.org</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">This is an automated email from the git hooks/post-receive script.<br>
<br>
rpurdie pushed a commit to branch master<br>
in repository openembedded-core.<br>
<br>
commit 5c2685c5ee2f8210a36b9a8591491b<wbr>6af0482084<br>
Author: Juro Bystricky <<a href="mailto:juro.bystricky@intel.com" target="_blank">juro.bystricky@intel.com</a>><br>
AuthorDate: Sat Mar 10 10:57:49 2018 -0800<br>
<br>
reproducible_build_simple.bbcl<wbr>ass: simple environment for reproducible binaries<br>
<br>
Export environmental variables needed for binary reproducibility with consistent values.<br>
<br>
This class can be used either directly via:<br>
INHERIT += "reproducible_build_simple"<br>
<br>
or can be inherited by a more complex/complete bbclass, for example a bblass which<br>
will crack SOURCE_DATE_EPOCH for each recipe.<br>
<br>
Signed-off-by: Juro Bystricky <<a href="mailto:juro.bystricky@intel.com" target="_blank">juro.bystricky@intel.com</a>><br>
Signed-off-by: Richard Purdie <<a href="mailto:richard.purdie@linuxfoundation.org" target="_blank">richard.purdie@linuxfoundatio<wbr>n.org</a>><br>
---<br>
meta/classes/reproducible_bui<wbr>ld_simple.bbclass | 11 +++++++++++<br>
1 file changed, 11 insertions(+)<br>
<br>
diff --git a/meta/classes/reproducible_bu<wbr>ild_simple.bbclass b/meta/classes/reproducible_bu<wbr>ild_simple.bbclass<br>
new file mode 100644<br>
index 0000000..dd11cd9<br>
--- /dev/null<br>
+++ b/meta/classes/reproducible_bu<wbr>ild_simple.bbclass<br>
@@ -0,0 +1,11 @@<br>
+# Setup default environment for reproducible builds.<br>
+<br>
+BUILD_REPRODUCIBLE_BINARIES = "1"<br>
+<br>
+export PYTHONHASHSEED = "0"<br>
+export PERL_HASH_SEED = "0"<br>
+export TZ = 'UTC'<br>
+export SOURCE_DATE_EPOCH ??= "1520598896"<br>
+<br>
+REPRODUCIBLE_TIMESTAMP_ROOTFS ??= "1520598896"<br>
+<br>
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