[Bug 987502] Re: libxml2-dev: /usr/bin/xml2-config isn't identical across all arch

[Sebastien Bacher]

Upload Laney's update to quantal, unsubscribing the sponsors since that
was the only patch to sponsor and milestoning for the LTS point release,
we will need to come with a smaller patch than the update for it

** Also affects: libxml2 (Ubuntu Precise)
   Importance: Undecided
       Status: New

** Changed in: libxml2 (Ubuntu Precise)
   Importance: Undecided => High

** Changed in: libxml2 (Ubuntu Precise)
    Milestone: None => ubuntu-12.04.1

** Changed in: libxml2 (Ubuntu Precise)
       Status: New => Triaged

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https://bugs.launchpad.net/bugs/987502

Title:
  libxml2-dev: /usr/bin/xml2-config isn't identical across all arch

Status in “libxml2” package in Ubuntu:
  Fix Released
Status in “libxml2” source package in Precise:
  Triaged

Bug description:
  [Background] In the M-A implementation of version
  2.7.8.dfsg-5.1ubuntu1, /usr/bin/xml2-config still contains M-A
  tripples, which is troublesome when the package libxml2-dev is marked
  as M-A: same. The problem is caused by the sed call in debian/rules
  says "usr/lib/<tripple>", while it wasn't like that in xml2-config
  script itself.

  [Impact] libxml2-dev is not M-A co-installable

  [Development Fix] libxml2 version 2.7.8.dfsg-9 in Debian Sid

  [Stable Fix] Change required is trivial, in debian/rules:

  -	sed -i -e 's,/usr/lib/$(DEB_HOST_MULTIARCH),/usr/lib,' debian/libxml2-dev/usr/bin/xml2-config
  +	sed -i -e 's,/lib/$(DEB_HOST_MULTIARCH),/lib,' debian/libxml2-dev/usr/bin/xml2-config

  [Test Case] Enable M-A in testing environment (amd64 for instance),
  and try to install both libxml2-dev:i386 and libxml2-dev:amd64 which
  were newly built with the mentioned patch. If the action failed with
  something like './usr/bin/xml2-config' is different from the same file
  on the system, then the bug was not fixed.

  [Regression Potential] xml2-config reports the libdir is /usr/lib,
  while the actual ones are /usr/lib/<triplets>. This might break
  applications whose build system can't find libraries correctly in the
  previous path but relies on xml2-config's output. I recommend to use
  pkg-config instead of this script.

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