[Bug 2059107] Re: lto-disabled-list not documented in dpkg-buildflags man page

[Launchpad Bug Tracker]

This bug was fixed in the package dpkg - 1.22.6ubuntu10

---------------
dpkg (1.22.6ubuntu10) oracular; urgency=medium

  * Also disable framepointer on s390x, leaving only -mbackchain.

dpkg (1.22.6ubuntu9) oracular; urgency=medium

  * Disable framepointer on ppc64el.

 -- Steve Langasek <steve.langasek at ubuntu.com>  Wed, 01 May 2024
11:45:38 -0700

** Changed in: dpkg (Ubuntu)
       Status: Fix Committed => Fix Released

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https://bugs.launchpad.net/bugs/2059107

Title:
  lto-disabled-list not documented in dpkg-buildflags man page

Status in dpkg package in Ubuntu:
  Fix Released

Bug description:
  When debugging some compilation issue I couldn't understand why the
  buildflags would be changed depending in the source package name. I
  did go through dpkg-buildflags man page but couldn't find an answer.
  It took me quite some time to figure out what's going on and only
  after I found out about lto-disabled-list file, I was able to find
  documentation on https://wiki.ubuntu.com/ToolChain/LTO.

  I understand this was considered temporary but it seems like it is to
  stay for some time. Man page is one of the most important
  documentation many people would be looking into in case of problems
  and it is quite unexpected that multiple ways of configuring dpkg-
  buildflags are mentioned but this one isn't. It is even adding to the
  confusion by mentioning lto is disabled by default which is not the
  case on Ubuntu:

  "lto This setting (since dpkg 1.21.0; disabled by default)"

  Would you consider adding information about that feature also to the
  man page?

  I'm using Ubuntu 23.10 with 1.22.0ubuntu1.1 but as far as I can tell
  that is also not documented in ubuntu/devel branch of
  https://git.launchpad.net/ubuntu/+source/dpkg.

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