URL: https://ceres-solver.googlesource.com/ceres-solver/+archive/0338f9a8e69582a550ef6d128e447779536d623c.tar.gz
Version: 0338f9a8e69582a550ef6d128e447779536d623c
License: New BSD, portions MIT
License File: LICENSE

Description:
Ceres (http://ceres-solver.googlecode.com) is a portable non-linear
least squares solver, developed at Google. It is now open-source.

Website : https://code.google.com/p/ceres-solver/
Code    : https://ceres-solver.googlesource.com/ceres-solver/
Docs    : http://homes.cs.washington.edu/~sagarwal/ceres-solver/

Local modifications:
Replaced the implementation of logging.h with the google3 /mobile/base/logging.h