group.of.nepali.translators team mailing list archive

[LocutusOfBorg <costamagnagianfranco@xxxxxxxx>]

please reject proj, the issue is that pcl needs an explicit dependency,
because vtk6 lost the direct one for the -dev package.

The really nice fix would have been to cherry-pick the vtk6 revert to
use the internal proj library, but this is unfeasible since it is an ABI
change. (see debian bug: #819741)

now, the smartest solution I could think is to add libproj-dev to pcl dependencies, even if this might result in an ABI break too.
https://launchpad.net/~costamagnagianfranco/+archive/ubuntu/locutusofborg-ppa/+packages
please test this package and specially pcl reverse-dependencies in xenial with this updated version

fixing vtk6 will require checks/rebuilds of ~10 reverse-dependencies (many of them might have been already built with the old vtk with embedded proj, so no change for them), while fixing pcl means only one reverse-dependency to check/fix
"ros-pcl-conversions"

so at the end, please test, and in case you agree with my analysis,
reject proj and accept pcl

** Changed in: pcl (Ubuntu Artful)
       Status: Confirmed => Fix Released

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https://bugs.launchpad.net/bugs/1704459

Title:
  rebuild needed because dependency changed location of exported
  libmpi.so library

Status in pcl package in Ubuntu:
  Fix Released
Status in pcl source package in Xenial:
  Fix Committed
Status in proj source package in Xenial:
  Fix Committed
Status in pcl source package in Zesty:
  Fix Committed
Status in proj source package in Zesty:
  Fix Released
Status in pcl source package in Artful:
  Fix Released
Status in proj source package in Artful:
  Fix Released

Bug description:
  [Impact]

   * This bug prevents users to link dynamically against pcl libraries
   * There is no upload required as rebuilding the package is enough to fix the bug

  [Test Case]

   * install libpcl-dev
     * apt-get update && apt-get install libpcl-dev
   * mkdir -p /tmp/test_pcl/src && cd /tmp/test_pcl
   * echo "#include <pcl/common/io.h>" > src/foo.cpp
   * create a CMakeLists.txt
  ```
  find_package(PCL REQUIRED)

  option(BUILD_SHARED_LIBS "Build shared libs" ON)
  include_directories(${PCL_INCLUDE_DIRS})
  add_library(foolib src/foo.cpp)
  target_link_libraries(foolib ${PCL_LIBRARIES})
  ```
   * mkdir build && cd build
   * cmake ..
   * make
  This produces the error message:
  ```
  make[2]: *** No rule to make target '/usr/lib/libmpi.so', needed by 'libfoolib.so'. Stop.
  CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/foolib.dir/all' failed
  make[1]: *** [CMakeFiles/foolib.dir/all] Error 2
  ```

  [Patch]
   * Rebuild the package
   * Test case passes once the package rebuilt

  [Regression Potential]

   * Given that the patch is just a rebuild I don't see a potential for regression
  Package: libpcl-dev (1.8.0+dfsg1-4ubuntu4) (on Zesty)

  Source of the bug: last build of vtk6 exports libmpi.so in
  /usr/lib/x86_64-linux-gnu/openmpi/lib and not /usr/lib/openmpi/lib
  anymore.

  Impact: unable to link libraries against pcl-dev without [hacky
  workaround](https://github.com/ros-
  perception/perception_pcl/commit/42683bd4069c3a8bcec56d6c4e686d9e8643e77b)

  Changelog introducing the bug:
  ```
  vtk6 (6.3.0+dfsg1-3) unstable; urgency=medium

    * Rebuild against new multiarch enabled openmpi, Closes: #848785 
  ```

  Solution: rebuild libpcl-dev against libvtk6-dev (6.3.0+dfsg1-3)

  
  Thanks!

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