Antonio Sanchez 69adf26aa3 Modify googlehash use to account for namespace issues.
The namespace declaration for googlehash is a configurable macro that
can be disabled.  In particular, it is disabled within google, causing
compile errors since `dense_hash_map`/`sparse_hash_map` are then in
the global namespace instead of in `::google`.

Here we play a bit of gynastics to allow for both `google::*_hash_map`
and `*_hash_map`, while limiting namespace polution.  Symbols within
the `::google` namespace are imported into `Eigen::google`.

We also remove checks based on `_SPARSE_HASH_MAP_H_`, as this is
fragile, and instead require `EIGEN_GOOGLEHASH_SUPPORT` to be
defined.
2021-04-12 19:00:39 -07:00
..
2019-09-16 19:33:29 -04:00
2021-02-27 12:09:33 +00:00
2019-09-16 19:33:29 -04:00
2010-02-16 21:41:04 -05:00
2021-02-27 12:09:33 +00:00