diff --git a/internal/ceres/solver_utils.cc b/internal/ceres/solver_utils.cc
new file mode 100644
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+++ b/internal/ceres/solver_utils.cc
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+// Ceres Solver - A fast non-linear least squares minimizer
+// Copyright 2015 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.
+//
+// Author: sameeragarwal@google.com (Sameer Agarwal)
+
+#include <string>
+
+#include "ceres/internal/config.h"
+
+#include "Eigen/Core"
+#include "ceres/internal/port.h"
+#include "ceres/solver_utils.h"
+#include "ceres/version.h"
+
+namespace ceres {
+namespace internal {
+
+#define CERES_EIGEN_VERSION                                          \
+  CERES_TO_STRING(EIGEN_WORLD_VERSION) "."                           \
+  CERES_TO_STRING(EIGEN_MAJOR_VERSION) "."                           \
+  CERES_TO_STRING(EIGEN_MINOR_VERSION)
+
+std::string VersionString() {
+  std::string value = std::string(CERES_VERSION_STRING);
+  value += "-eigen-(" + std::string(CERES_EIGEN_VERSION) + ")";
+
+#ifdef CERES_NO_LAPACK
+  value += "-no_lapack";
+#else
+  value += "-lapack";
+#endif
+
+#ifndef CERES_NO_SUITESPARSE
+  value += "-suitesparse-(" + std::string(CERES_SUITESPARSE_VERSION) + ")";
+#endif
+
+#ifndef CERES_NO_CXSPARSE
+  value += "-cxsparse-(" + std::string(CERES_CXSPARSE_VERSION) + ")";
+#endif
+
+#ifndef CERES_NO_ACCELERATE_SPARSE
+  value += "-acceleratesparse";
+#endif
+
+#ifdef CERES_USE_EIGEN_SPARSE
+  value += "-eigensparse";
+#endif
+
+#ifdef CERES_RESTRUCT_SCHUR_SPECIALIZATIONS
+  value += "-no_schur_specializations";
+#endif
+
+#ifdef CERES_USE_OPENMP
+  value += "-openmp";
+#else
+  value += "-no_openmp";
+#endif
+
+#ifdef CERES_NO_CUSTOM_BLAS
+  value += "-no_custom_blas";
+#endif
+
+  return value;
+}
+
+}  // namespace internal
+}  // namespace ceres