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+# Ceres Solver - A fast non-linear least squares minimizer
+# Copyright 2018 Google Inc. All rights reserved.
+# http://ceres-solver.org/
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are met:
+#
+# * Redistributions of source code must retain the above copyright notice,
+#   this list of conditions and the following disclaimer.
+# * Redistributions in binary form must reproduce the above copyright notice,
+#   this list of conditions and the following disclaimer in the documentation
+#   and/or other materials provided with the distribution.
+# * Neither the name of Google Inc. nor the names of its contributors may be
+#   used to endorse or promote products derived from this software without
+#   specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+# POSSIBILITY OF SUCH DAMAGE.
+#
+# Authors: mierle@gmail.com (Keir Mierle)
+#
+# Bazel workspace file to enable building Ceres with Bazel.
+
+workspace(name = "com_google_ceres_solver")
+
+# External dependency: Google Flags; has Bazel build already.
+http_archive(
+    name = "com_github_gflags_gflags",
+    sha256 = "6e16c8bc91b1310a44f3965e616383dbda48f83e8c1eaa2370a215057b00cabe",
+    strip_prefix = "gflags-77592648e3f3be87d6c7123eb81cbad75f9aef5a",
+    urls = [
+        "https://mirror.bazel.build/github.com/gflags/gflags/archive/77592648e3f3be87d6c7123eb81cbad75f9aef5a.tar.gz",
+        "https://github.com/gflags/gflags/archive/77592648e3f3be87d6c7123eb81cbad75f9aef5a.tar.gz",
+    ],
+)
+
+# External dependency: Google Log; has Bazel build already.
+http_archive(
+    name = "com_github_google_glog",
+    sha256 = "7083af285bed3995b5dc2c982f7de39bced9f0e6fd78d631f3285490922a0c3d",
+    strip_prefix = "glog-3106945d8d3322e5cbd5658d482c9ffed2d892c0",
+    urls = [
+        "https://github.com/drigz/glog/archive/3106945d8d3322e5cbd5658d482c9ffed2d892c0.tar.gz",
+    ],
+)
+
+# External dependency: Eigen; has no Bazel build.
+new_http_archive(
+    name = "com_github_eigen_eigen",
+    build_file = "bazel/eigen.BUILD",
+    sha256 = "dd254beb0bafc695d0f62ae1a222ff85b52dbaa3a16f76e781dce22d0d20a4a6",
+    strip_prefix = "eigen-eigen-5a0156e40feb",
+    urls = [
+        "http://bitbucket.org/eigen/eigen/get/3.3.4.tar.bz2",
+    ],
+)
+
+# External dependency: Google Benchmark; has no Bazel build.
+new_http_archive(
+    name = "com_github_google_benchmark",
+    urls = ["https://github.com/google/benchmark/archive/56f52ee228783547f544d9ac4a533574b9010e3f.zip"],
+    sha256 = "8c1c6e90cd320b07504fabb86400f390faff2e599183ebd9396908817968ae79",
+    strip_prefix = "benchmark-56f52ee228783547f544d9ac4a533574b9010e3f",
+    build_file_content =
+"""
+cc_library(
+    name = "benchmark",
+    srcs = glob([
+        "src/*.h",
+        "src/*.cc",
+    ]),
+    hdrs = glob(["include/benchmark/*.h"]),
+    copts = [
+        "-DHAVE_STD_REGEX",
+    ],
+    includes = [
+        "include",
+    ],
+    visibility = ["//visibility:public"],
+)
+"""
+)