Ceres can be built without linking against a sparse linear algebra library
such as SuiteSparse or Eigen-sparse. This can happen if the user does not
have all the dependencies, which normally get installed when following
the Cartographer installation guide. In this case, Cartographer will
work, but without loop closures, because Ceres is not working fast enough
(the loop closure optimization without a sparse linear algebra library
is a few orders of magnitude slower). Another bad side effect of this is
that Cartographer will hang when finalizing the trajectory or on exit,
because all loop closing optimizations will be waiting in a queue which
can take hours to process.
When Ceres is regularly built against a sparse linear algebra library, as it
is supposed to be, it declares a component named SparseLinearAlgebraLibrary.
Because normal functioning of Cartographer seemingly depends on this being
present, it is introduced here in Cartographer as a required Ceres component
dependency.
The Boost include directory was not correctly added, and the
headers of the project where always looked up at the source or
build directory, not where they are installed.
- Remove use of get_property(LOCATION in cmake where this is easy. This
reduces build warnings sufficiently to not drown out other important
information.
- Mark cairo a dependency in package.xml so rosdep pulls it in.
Tested using docker -t ros:kinetic, which is based on Xenial.
Juraj Oršulić
Damon Kohler
Holger Rapp
Wolfgang Hess
Damon Kohler
Wolfgang Hess