Re: Does ccache ever help with kernel mock build?

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Am 13.02.24 um 16:16 schrieb Gary Buhrmaster:
On Tue, Feb 13, 2024 at 9:52 AM Miroslav Suchý <msuchy@xxxxxxxxxx> wrote:

Dne 13. 02. 24 v 9:08 Julian Sikorski napsal(a):
Could this be the reason for ccache not working?

I wonder whether it is Mock problem, Ccache issue or problem in packaging? Does the ccache speadup the build when you
run it with plain rpmbuild and ccache on host?

I have lost track of the details (and the
version of ccache when the issue was
addressed/patched), but ccache at one
time included SOURCE_DATE_EPOCH
in the default hash, resulting in no
cache hits.

This appears to have been fixed in ccache-4.2. F36, obsolete as it is, shipped with 4.5.1.
Having said that, with current kernel there is this line in the log:
+ perl -p -i -e 's/^CONFIG_BUILD_SALT.*/CONFIG_BUILD_SALT="6.7.4-200.lacie03.fc39.x86_64"/' .config
This would change every build.

Best regards,
Julian
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