Hi,
On 2019-05-24 11:34:58 -0400, Tom Lane wrote:
> I wrote:
> > Peter Eisentraut <peter.eisentraut@2ndquadrant.com> writes:
> >> What do people think about adding something like this errbacktrace()
> >> from Álvaro's patch to core PostgreSQL?
>
> > I think we did discuss it right after that, or somewhere nearby, and
> > concluded that the output is so imprecise that it's not really going
> > to be worth whatever portability issues we'd have to deal with.
>
> Hmm, after some digging in the archives, the closest thing I can find
> is this thread:
>
>
https://www.postgresql.org/message-id/flat/CAMsr%2BYGL%2ByfWE%3DJvbUbnpWtrRZNey7hJ07%2BzT4bYJdVp4Szdrg%40mail.gmail.com
>
> where we discussed using libunwind instead, but people didn't like
> the extra dependency.
Hm, I didn't actually see that much concern about that. I still think we
should just go for libunwind. At least on debian it's likely to already
be installed:
andres@alap4:~$ apt rdepends libunwind8
libunwind8
Reverse Depends:
Depends: libunwind-dev (= 1.2.1-9)
Depends: linux-perf-4.16
Depends: linux-perf-4.15
Depends: linux-perf-4.14
Depends: rspamd
Depends: linux-perf-5.0
Depends: libjulia1
Depends: julia
Depends: geary
Depends: libunwind8-dbgsym (= 1.2.1-9)
Depends: xwayland
Depends: xvfb
Depends: xserver-xorg-core
Depends: xserver-xephyr
Depends: xnest
Depends: xdmx
Depends: trafficserver
Depends: tigervnc-standalone-server
Depends: tarantool
Depends: strace
Depends: spring
Depends: rspamd
Depends: linux-perf-4.19
Depends: libunwind-setjmp0
Depends: libeina1a
Depends: libjulia1
Depends: julia
Depends: intel-gpu-tools
Depends: libheaptrack
Depends: libgoogle-perftools4
Depends: libgoogle-glog0v5
Depends: gdnsd
Depends: libevas1-engines-x
Depends: libevas1
In particular strace, xserver-xorg-core, perf are reasonably likely to
already installed.
It's also not a large library. I'd bet if we made it an optional
build-time dependency it'd get included by just about every distro.
Greetings,
Andres Freund