Build gtsam against Eigen from nixpkgs #562
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Without this change, gtsam is built against a vendored copy, which is
different version (3.3) than what's in nixpkgs (3.4). Dependent
packages using Eigen then fail with the following error:
/nix/store/lic85q2svs3ymv0zkgl727af9khm1x4l-ros-jazzy-gtsam-4.2.0-r4/include/gtsam/base/Vector.h:76:30: error: static assertion failed: Error: GTSAM was built against a different version of Eigen
76 | GTSAM_EIGEN_VERSION_MAJOR==EIGEN_MAJOR_VERSION,
| ^
/nix/store/lic85q2svs3ymv0zkgl727af9khm1x4l-ros-jazzy-gtsam-4.2.0-r4/include/gtsam/base/Vector.h:76:30: note: the comparison reduces to '(3 == 4)'
This is the case for mola_state_estimation (which was recently added
to ROS) as well as for some 3rd-party ROS packages I worked with.
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Without this change, gtsam is built against a vendored copy, which is different version (3.3) than what's in nixpkgs (3.4). Dependent packages using eigen them fail with the following error:
This is the case for mola_state_estimation (which was recently added to ROS) as well as some unofficial ROS packages I worked with.