[Bug 1770678] [NEW] [SRU] Simbody package ships erroneous paths for blas/lapack in the cmake module

[Launchpad Bug Tracker]

You have been subscribed to a public bug by Jose Luis Rivero (j-rivero):

Affecting Artful:

According to the publishing history, the package Simbody for Artful was
directly copied from Zesty:
https://launchpad.net/ubuntu/+source/simbody/3.5.4+dfsg-
1ubuntu1/+publishinghistory

The problem is that a couple of dependencies of Simbody (libblas and
liblapack) changed the location of their libraries to be arch dependent
(from /usr/lib to /usr/lib/$arch-triplet/) and these paths are hardcoded
by Simbody in the cmake module at building time.

[Impact]

* Any software using Simbody cmake module won't compile because of non existant lib paths in Simbody exported libraries.
  - See https://build.osrfoundation.org/job/gazebo-ci-default-artful-amd64-gpu-none/23/consoleFull#-14256201906ea37b8d-a6d4-40ae-8431-d90c018842af

* Rebuilding the package (binNMU) without any modifications to the
source code would make cmake to get the new paths and hardcode them in
the cmake module.

[Test Case]

* To check that there are non-existant paths in the current cmake
module:

 - apt-get install libsimbody-dev
 - if [[ -f $(sed -n 's:.*\(/usr/.*libblas.so\).*:\1:p' /usr/lib/x86_64-linux-gnu/cmake/simbody/SimbodyConfig.cmake | uniq) ]]; then echo "fixed!"; else echo "Wrong path in cmake module"; fi

* If you run the oneliner in any other release different than Artful it
will return a success message.

[Regression Potential]

 * There is no change in code or in Debian metadata, there is a change
in the building environment. Changing the build environment from Zesty
to Artful could produce some changes in the binary interface but given
that it should be its 'native enviroment' I don't expect any
incompatibility introduced by the change in the compiler of build
flags/libraries.

* The lack of changes in code should keep the API stable.

* The lack of change in debian metadata should keep the packaging
stable.

* To minimize the possible problems in the binary interface or any other thing related to the change I created a PPA and rebuild the current version:
  - https://launchpad.net/~j-rivero/+archive/ubuntu/simbody-artful

* I've used Gazebo simulator (which uses Simbody) large test suite for trying to detect possible problems. All seems fine and problems are not related to this bug:
  - https://build.osrfoundation.org/job/gazebo-ci-default-artful-amd64-gpu-none/25/console

* This both shows the SRU team that the risks have been considered, and
provides guidance to testers in regression-testing the SRU.

[Other Info]

* I'm currently the maintainer of Simbody in Debian

** Affects: simbody (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: artful
-- 
[SRU] Simbody package ships erroneous paths for blas/lapack in the cmake module
https://bugs.launchpad.net/bugs/1770678
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