[R] LTO job on CRAN fails

[asfimport]

ARROW-13199 added -fno-lto flags to the build (see also ARROW-12853). This likely is the cause of the LTO failure on CRAN: https://www.stats.ox.ac.uk/pub/bdr/LTO/arrow.out so we probably need to back it out.

We don't have a CI job that tests with R built with --enable-lto, and AFAICT there is no docker image out there that has one. I will try to get one added to wch/r-debug so that we don't have to build R from source to test this.

Reporter: Neal Richardson / @nealrichardson
Assignee: Jonathan Keane / @jonkeane

PRs and other links:

• GitHub Pull Request #10849

_{Note: This issue was originally created as ARROW-13507. Please see the migration documentation for further details.}

[asfimport]

Jonathan Keane / @jonkeane:
Update:

This likely is the cause of the LTO failure on CRAN: https://www.stats.ox.ac.uk/pub/bdr/LTO/arrow.out so we probably need to back it out.

I don't think this alone will work — in the PR I've disabled adding this flag in the LTO env and we now get segfaults. I've also tried removing all of these flags totally and built locally and got the same segfaults.

[asfimport]

Neal Richardson / @nealrichardson:
Issue resolved by pull request 10849
#10849