[Bug 1573234] Re: unable to link: cannot find libvtkproj4

[Kyle Fazzari]

** Description changed:

  [Impact]
  
   * Any code that links to libraries provided by libpcl1.7 (which depends
  on vtk6) fails to link because it cannot find vtkproj4 (see
  https://github.com/PointCloudLibrary/pcl/issues/1594 for example)
  
   * This has been fixed in Debian
  
   * The attached debdiff is based on the upstream Debian fix
  (https://salsa.debian.org/science-
  team/vtk6/-/commit/7fd27ac6bf33c05b1ec11a8ee2a17ecb525978b0)
  
  [Test Case]
  
   * Build software that uses PCL (e.g. https://github.com/ros-
  perception/perception_pcl) and watch it fail
  
   * Apply this patch, and watch it succeed
  
  [Where problems could occur]
  
   * This patch seems tiny, but given that part of it is disabling a patch
  that is currently applied in Xenial (102_enable_system_proj4_lib.patch)
  it is larger than it first appears
  
-  * I believe the change introduced is backward compatible, but it could
- use a double check from a more experienced eye
+  * This could use a double check from a more experienced eye, I'm
+ concerned this may break ABI

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https://bugs.launchpad.net/bugs/1573234

Title:
  unable to link: cannot find libvtkproj4

Status in vtk6 package in Ubuntu:
  Fix Released
Status in vtk6 source package in Xenial:
  Confirmed

Bug description:
  [Impact]

   * Any code that links to libraries provided by libpcl1.7 (which
  depends on vtk6) fails to link because it cannot find vtkproj4 (see
  https://github.com/PointCloudLibrary/pcl/issues/1594 for example)

   * This has been fixed in Debian

   * The attached debdiff is based on the upstream Debian fix
  (https://salsa.debian.org/science-
  team/vtk6/-/commit/7fd27ac6bf33c05b1ec11a8ee2a17ecb525978b0)

  [Test Case]

   * Build software that uses PCL (e.g. https://github.com/ros-
  perception/perception_pcl) and watch it fail

   * Apply this patch, and watch it succeed

  [Where problems could occur]

   * This patch seems tiny, but given that part of it is disabling a
  patch that is currently applied in Xenial
  (102_enable_system_proj4_lib.patch) it is larger than it first appears

   * This could use a double check from a more experienced eye, I'm
  concerned this may break ABI

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