Hi Alex, RP, Mark,
I did some research on the subject in order to try to figure out what is
going on.
1) I come to a similar conclusion with what found, but tried to look a
bit deeper for the reason.
1.1) The reason that cross-prelink is not prelinking is, that for a
quite some time by default everything is built with PIE mode by default
and cross-prelink does not seem to be able to work on exe/libs compiled
with PIE mode. So seeing the same behavior with and without prelinking
is what I would expect as long as everything is compiled with PIE mode.
A more detailed analysis of my tests can be found on my not yet
officially published site:
https://rlbl.me/prelink-1
https://rlbl.me/prelink-2
Alex:
Can you please rebuild your test images without PIE mode and re-run the
tests?
Then we should have the 4 test cases:
prelinked-with-pie
no-prelink-with-pie
prelink-no-pie
no-prelink-no-pie
I guess then we can discuss what are the next steps.
In my opinion the current default settings, which compile close to
everything in PIE mode, but invoke also cross-prelink do not make much
sense.
The question is: "Do we want to drop cross-prelink, or do we want to
drag it along and come up more fine-grained configuration options?"
We could e.g. exclude certain files from pre-linking.
IMHO cross-prelink still works, but not on exe/libs which were compiled
in PIE mode.
Regards,
Robert
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