bash error handling and reporting is atrocious. Without -e it will
just ignore errors. With -e it will stop on errors, but not report
where the error happened (apart from exiting itself with an error code).
Improve that with the `trap ERR` command. Note that this won't be invoked
on intentional error exit with `exit 1`.
We apply this on every bash script that contains -e or that it appears
trivial to set it in. Non-trivial scripts without -e are left unmodified,
since they might intentionally invoke failing scripts.
Closesscylladb/scylladb#22747
This patch adds the following logic to the release build:
pgo/profiles/profile.profdata.xz is the default profile file, compressed.
This file is stored in version control using git LFS.
A ninja rule is added which creates build/profile.profdata by decompressing it.
If no profile file is explicitly specified, ./configure.py checks whether
the compressed default profile file exists and is compressed.
(If it exists, but isn't compressed, the user most likely has
git lfs disabled or not installed. In this case, the file visible in the working
tree will be the LFS placeholder text file describing the LFS metadata.)
If the compressed file exists, build/profile.profdata is chosen as the used
profile file.
If it doesn't exist, a warning is printed and configure.py falls back
to a profileless build.
The default profile file can be explicitly disabled by passing the empty
--use-profile="" to configure.py
A script is added which re-generates the profile.
After the script is run, the re-generated compressed profile can be staged,
committed, pushed and merged to update the default profile.
