Feature #5124
opennetwork:osmocom:nightly feed with "-O0" builds
0%
Description
when debugging issues, it's always annoying to run into "... optimized out" in gdb.
It might make sense to have an OBS feed that basically is a copy of 'nightly' but has all binaries built with -O0
Hopefully that's not all that much effort? Can we somehow inject the compiler flag without having to maintain a package-specific patch against debian/rules?
Updated by laforge almost 3 years ago
ideally one would be able to mix packages from nightly and nightly-O0, but that may be too much to ask for. In that case one could install just one relevant O0 package while keeping other parts optimized. Just daydreaming...
Updated by keith almost 3 years ago
I wonder would it be possible to build a package in the same -nightly feed that has a different name and conflicts with the "normal" package, and depends on the -dbg package?
so you could do
opkg install osmo-bts-non-optimised (or whatever)
test.. test...
then
opkg install osmo-bts
operate.. operate...
Updated by laforge almost 3 years ago
On Wed, Apr 21, 2021 at 08:34:11PM +0000, keith [REDMINE] wrote:
I wonder would it be possible to build a package in the same -nightly feed that has a different name and conflicts with the "normal" package, and depends on the -dbg package?
certainly it's possible. The problem is more how to do that without
creating a lot of manual labour, both one time and in terms of
continuous maintenance.
having "non-optimizied copies" of all packages in a feed sounds like
it will need maintenance every time a package changes or a new one is
created, which I wouldn't consider given the constant ongoing burden
it puts on the maintenance.
So I guess it boils down to finding whatever has the least impact
on our packaging and maintenance effort while still enabling users
to run -O0 without having to build from source.
As stated, ideally the non-optimized feed of the same flavor (nightly,
latest, upcoming stable releases) would not conflict with the optimzied
one so you would end up with the same situation as you request; the
only difference would be that you'd add two apt feeds and then have to
specify from which of those feeds you'd want to install 'osmo-bts'.
Updated by pespin almost 3 years ago
To whom it may concern: my opinion regarding this topic is that I see no point in doing and maintaining this.
If someone requires -O0 binaries, I'd expect him to be able to build + scp packages manually (fi quickly using oso-gsm-tester contrib scripts to build a sysroot). If you end up needing -O0 binaries to debug further, it's also high chances that you'll end up too willing to add logging information, or test a patch, or whatever, so you still need to build your own build.
Updated by osmith 11 months ago
- Status changed from New to Feedback
- Assignee changed from osmith to laforge
Harald, given what Pau wrote above: do you think this is still relevant?
Regarding implementation, it wouldn't be that much effort with the OBS scripts we already have:
- create a second nightly feed where -O0 is enabled
- packages can be mixed with the regular nightly feed
