The change to the build flags solves the problem because hpcups and
pxljr rely on being able to override jinit_color_converter.  I think the
fact that they're doing this points out a weakness in the libjpeg API -
there should be some better way to register a callback to change the
converter instead of hijacking the symbol from the library.

I think that for precise, turning off -Wl,-Bsymbolic-functions will be
the right way to fix this.  It's possible, but unlikely, that it will
cause undesirable behavior regressions elsewhere... ultimately, it can
only be a regression if some other package is *trying* to do this symbol
interposition, has implemented it poorly, and users are being saved from
that bug by symbolic-functions.

** Also affects: libjpeg6b (Ubuntu Precise)
   Importance: Undecided
       Status: New

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

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

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

** Also affects: libjpeg-turbo (Ubuntu Precise)
   Importance: Undecided
       Status: New

** Changed in: ghostscript (Ubuntu Precise)
       Status: New => Invalid

** Changed in: hplip (Ubuntu Precise)
       Status: New => Invalid

** Changed in: libjpeg-turbo (Ubuntu)
       Status: Confirmed => Triaged

** Changed in: libjpeg-turbo (Ubuntu)
    Milestone: precise-updates => None

** Changed in: libjpeg6b (Ubuntu Precise)
       Status: New => Fix Released

** Changed in: libjpeg-turbo (Ubuntu Precise)
   Importance: Undecided => High

** Changed in: libjpeg-turbo (Ubuntu Precise)
       Status: New => Triaged

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https://bugs.launchpad.net/bugs/777670

Title:
  wrong colors on HPCLJ 3500/3600 printer after switching to 11.04

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