On 2017-04-13 09:34, Gary Thomas wrote:
I'm trying to understand why 'perl' is being built for my target
even though I don't mention it in any of the package recipes used
to build that target. When I used 'taskexp', I found that 'perl:do_build'
only has a single dependent task, namely 'my-image:do_build'
note: no perl packages end up in my image.
This is just one example where it seems bitbake is doing a lot of
unnecessary (certainly un-asked-for) work.
How can I unravel this mystery?
Thanks for any pointers
I think I've figured this out - my image includes a couple of
packages (i2c-tools, ntp) that each have some component that
needs perl although I don't install those components. So it
now makes sense that perl has to be built for my target even
though I'm not actually using it.
For example, in i2c-tools I see
RDEPENDS_${PN}-misc = "${PN} perl"
and since I don't actually install i2c-tools-misc, perl isn't
needed.
That said, I had to discover this by manually looking through the
task-depends.dot file as I did not see how to come up with this
answer using -u taskdep alone.
--
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Gary Thomas | Consulting for the
MLB Associates | Embedded world
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