[yocto] When is a task rerun?

Xiaohui Liu whulxh at gmail.com
Tue Nov 22 13:25:10 PST 2016

Hi everyone,

Under what condition will a task be rerun? My understanding is that each
task has a signature/checksum stored somewhere in tmp/. If the checksum
changes, bitbake will look for shared state cache in SSTATE_DIR and then in
SSTATE_MIRRORS. If no match is found, the task is run. Is my understanding
right? Plus, where is the checksum stored in tmp/?

Thanks in advance.

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