[Bug 2093107] Re: buildflags.mk is doing excessive dpkg-buildflags calls

[Michael Hudson-Doyle]

I poked Guillem about this and this bug report seems to be the same
issue, https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1092051 which
suggests that the actual regression is in make (something about make's
starting of subprocesses in $(shell ...) now being a lot slower)

** Bug watch added: Debian Bug tracker #1092051
   https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1092051

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Title:
  buildflags.mk is doing excessive dpkg-buildflags calls

Status in debhelper package in Ubuntu:
  Incomplete
Status in dpkg package in Ubuntu:
  New

Bug description:
  debhelper sequencer is doing excessive dpkg-buildflags calls, this is
  seen with the 13.23ubuntu1 merge, but not in Debian.

  with each call into the rules file, there's a visible 2-4 seconds
  delay, while a huge amount of dpkg-buildflags calls are done.

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