diff --git a/examples/evaluation_callback_example.cc b/examples/evaluation_callback_example.cc
index 579fca3..00c05c1 100644
--- a/examples/evaluation_callback_example.cc
+++ b/examples/evaluation_callback_example.cc
@@ -44,6 +44,8 @@
 // residual per observation is that it is what is needed if and when we need to
 // introduce a loss function which is what we do in robust_curve_fitting.cc
 
+#include <iostream>
+
 #include "Eigen/Core"
 #include "ceres/ceres.h"
 #include "glog/logging.h"
@@ -135,6 +137,8 @@
 // residuals and Jacobians that the CostFunction copies their values from.
 class MyEvaluationCallback : public ceres::EvaluationCallback {
  public:
+  // m and c are passed by reference so that we have access to their values as
+  // they evolve over time through the course of optimization.
   MyEvaluationCallback(const double& m, const double& c) : m_(m), c_(c) {
     x_ = Eigen::VectorXd::Zero(kNumObservations);
     y_ = Eigen::VectorXd::Zero(kNumObservations);
diff --git a/examples/sampled_function/sampled_function.cc b/examples/sampled_function/sampled_function.cc
index 187dc54..4cc3f11 100644
--- a/examples/sampled_function/sampled_function.cc
+++ b/examples/sampled_function/sampled_function.cc
@@ -41,11 +41,11 @@
 // values with automatic differentiation.
 struct InterpolatedCostFunctor {
   explicit InterpolatedCostFunctor(const Interpolator& interpolator)
-      : interpolator_(interpolator) {}
+      : interpolator(interpolator) {}
 
   template <typename T>
   bool operator()(const T* x, T* residuals) const {
-    interpolator_.Evaluate(*x, residuals);
+    interpolator.Evaluate(*x, residuals);
     return true;
   }
 
@@ -55,7 +55,7 @@
   }
 
  private:
-  const Interpolator& interpolator_;
+  const Interpolator& interpolator;
 };
 
 int main(int argc, char** argv) {
diff --git a/include/ceres/ceres.h b/include/ceres/ceres.h
index 731e7e9..5beec9c 100644
--- a/include/ceres/ceres.h
+++ b/include/ceres/ceres.h
@@ -34,11 +34,13 @@
 #ifndef CERES_PUBLIC_CERES_H_
 #define CERES_PUBLIC_CERES_H_
 
+// IWYU pragma: begin_exports
 #include "ceres/autodiff_cost_function.h"
 #include "ceres/autodiff_first_order_function.h"
 #include "ceres/autodiff_manifold.h"
 #include "ceres/conditioned_cost_function.h"
 #include "ceres/context.h"
+#include "ceres/constants.h"
 #include "ceres/cost_function.h"
 #include "ceres/cost_function_to_functor.h"
 #include "ceres/covariance.h"
@@ -68,5 +70,6 @@
 #include "ceres/sphere_manifold.h"
 #include "ceres/types.h"
 #include "ceres/version.h"
+// IWYU pragma: end_exports
 
 #endif  // CERES_PUBLIC_CERES_H_
diff --git a/internal/ceres/generate_bundle_adjustment_tests.py b/internal/ceres/generate_bundle_adjustment_tests.py
index 0da8853..ac83bc3 100644
--- a/internal/ceres/generate_bundle_adjustment_tests.py
+++ b/internal/ceres/generate_bundle_adjustment_tests.py
@@ -133,8 +133,9 @@
 
 BUNDLE_ADJUSTMENT_TEST_TEMPLATE = (COPYRIGHT_HEADER + """
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 %(preprocessor_conditions_begin)s
 namespace ceres::internal {
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_cuda_auto_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_cuda_auto_test.cc
index 1c9124d..e48f646 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_cuda_auto_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_cuda_auto_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_CUDA
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_cuda_auto_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_cuda_auto_threads_test.cc
index 3a53394..336066e 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_cuda_auto_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_cuda_auto_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_CUDA
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_cuda_user_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_cuda_user_test.cc
index 5887fe7..86df64d 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_cuda_user_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_cuda_user_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_CUDA
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_cuda_user_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_cuda_user_threads_test.cc
index d264f7f..5e752e4 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_cuda_user_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_cuda_user_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_CUDA
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_eigen_auto_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_eigen_auto_test.cc
index 18d08ec..faca44e 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_eigen_auto_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_eigen_auto_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 namespace ceres::internal {
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_eigen_auto_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_eigen_auto_threads_test.cc
index 7fcd8c4..c4db182 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_eigen_auto_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_eigen_auto_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 namespace ceres::internal {
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_eigen_user_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_eigen_user_test.cc
index 55626a3..7fe05d1 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_eigen_user_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_eigen_user_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 namespace ceres::internal {
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_eigen_user_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_eigen_user_threads_test.cc
index 7028f1c..7c34e20 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_eigen_user_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_eigen_user_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 namespace ceres::internal {
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_lapack_auto_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_lapack_auto_test.cc
index e8d6d20..79ec5ce 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_lapack_auto_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_lapack_auto_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_LAPACK
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_lapack_auto_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_lapack_auto_threads_test.cc
index e5eecfd..ee74420 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_lapack_auto_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_lapack_auto_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_LAPACK
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_lapack_user_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_lapack_user_test.cc
index 9b7d190..205de87 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_lapack_user_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_lapack_user_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_LAPACK
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_lapack_user_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_lapack_user_threads_test.cc
index ce95521..03a0a73 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_lapack_user_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_denseschur_lapack_user_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_LAPACK
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clustjacobi_auto_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clustjacobi_auto_test.cc
index bfb8e62..8ab6a9b 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clustjacobi_auto_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clustjacobi_auto_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_ACCELERATE_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clustjacobi_auto_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clustjacobi_auto_threads_test.cc
index 0faafab..cf6be8d 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clustjacobi_auto_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clustjacobi_auto_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_ACCELERATE_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clustjacobi_user_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clustjacobi_user_test.cc
index 1280be8..b6ca30f 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clustjacobi_user_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clustjacobi_user_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_ACCELERATE_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clustjacobi_user_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clustjacobi_user_threads_test.cc
index da574cc..2ef6aa1 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clustjacobi_user_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clustjacobi_user_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_ACCELERATE_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clusttri_auto_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clusttri_auto_test.cc
index 22518c8..ea24955 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clusttri_auto_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clusttri_auto_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_ACCELERATE_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clusttri_auto_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clusttri_auto_threads_test.cc
index 28d656a..217edc3 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clusttri_auto_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clusttri_auto_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_ACCELERATE_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clusttri_user_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clusttri_user_test.cc
index 29bfab1..4b66d17 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clusttri_user_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clusttri_user_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_ACCELERATE_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clusttri_user_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clusttri_user_threads_test.cc
index dd90748..3e84734 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clusttri_user_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_acceleratesparse_clusttri_user_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_ACCELERATE_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clustjacobi_auto_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clustjacobi_auto_test.cc
index e1e36e7..c1ceb9f 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clustjacobi_auto_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clustjacobi_auto_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifdef CERES_USE_EIGEN_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clustjacobi_auto_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clustjacobi_auto_threads_test.cc
index 418ff67..35760db 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clustjacobi_auto_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clustjacobi_auto_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifdef CERES_USE_EIGEN_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clustjacobi_user_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clustjacobi_user_test.cc
index d98eaff..6b35e6b 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clustjacobi_user_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clustjacobi_user_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifdef CERES_USE_EIGEN_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clustjacobi_user_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clustjacobi_user_threads_test.cc
index 27b2860..9b36562 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clustjacobi_user_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clustjacobi_user_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifdef CERES_USE_EIGEN_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clusttri_auto_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clusttri_auto_test.cc
index cbed4d8..a62c8ba 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clusttri_auto_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clusttri_auto_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifdef CERES_USE_EIGEN_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clusttri_auto_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clusttri_auto_threads_test.cc
index 25ec9c0..f306f81 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clusttri_auto_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clusttri_auto_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifdef CERES_USE_EIGEN_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clusttri_user_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clusttri_user_test.cc
index d0eb07b..62d60b1 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clusttri_user_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clusttri_user_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifdef CERES_USE_EIGEN_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clusttri_user_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clusttri_user_threads_test.cc
index eac83d8..223a76a 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clusttri_user_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_eigensparse_clusttri_user_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifdef CERES_USE_EIGEN_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_jacobi_auto_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_jacobi_auto_test.cc
index c160240..8e9afa1 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_jacobi_auto_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_jacobi_auto_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 namespace ceres::internal {
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_jacobi_auto_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_jacobi_auto_threads_test.cc
index 59f0552..433bf76 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_jacobi_auto_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_jacobi_auto_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 namespace ceres::internal {
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_jacobi_user_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_jacobi_user_test.cc
index b3c278c..8e740da 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_jacobi_user_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_jacobi_user_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 namespace ceres::internal {
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_jacobi_user_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_jacobi_user_threads_test.cc
index 5b70d79..705bfe2 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_jacobi_user_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_jacobi_user_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 namespace ceres::internal {
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_schurjacobi_auto_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_schurjacobi_auto_test.cc
index df4e4d3..6b46f3d 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_schurjacobi_auto_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_schurjacobi_auto_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 namespace ceres::internal {
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_schurjacobi_auto_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_schurjacobi_auto_threads_test.cc
index 6bd503e..a74efa8 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_schurjacobi_auto_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_schurjacobi_auto_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 namespace ceres::internal {
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_schurjacobi_user_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_schurjacobi_user_test.cc
index 9a8d60e..d0fa244 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_schurjacobi_user_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_schurjacobi_user_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 namespace ceres::internal {
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_schurjacobi_user_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_schurjacobi_user_threads_test.cc
index 0766815..e5418c9 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_schurjacobi_user_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_schurjacobi_user_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 namespace ceres::internal {
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_spse_auto_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_spse_auto_test.cc
index 90975fd..1287a61 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_spse_auto_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_spse_auto_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 namespace ceres::internal {
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_spse_auto_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_spse_auto_threads_test.cc
index bfa3419..739d7bf 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_spse_auto_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_spse_auto_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 namespace ceres::internal {
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_spse_user_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_spse_user_test.cc
index d39890e..38b8d36 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_spse_user_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_spse_user_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 namespace ceres::internal {
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_spse_user_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_spse_user_threads_test.cc
index ab24bbc..2a715cc 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_spse_user_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_spse_user_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 namespace ceres::internal {
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clustjacobi_auto_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clustjacobi_auto_test.cc
index 7f31d7a..d25a7e7 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clustjacobi_auto_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clustjacobi_auto_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_SUITESPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clustjacobi_auto_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clustjacobi_auto_threads_test.cc
index 1041c65..38d65b1 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clustjacobi_auto_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clustjacobi_auto_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_SUITESPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clustjacobi_user_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clustjacobi_user_test.cc
index 0b2ad8b..40b7451 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clustjacobi_user_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clustjacobi_user_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_SUITESPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clustjacobi_user_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clustjacobi_user_threads_test.cc
index aa0a5cc..d12b524 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clustjacobi_user_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clustjacobi_user_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_SUITESPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clusttri_auto_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clusttri_auto_test.cc
index e66d3c0..7206132 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clusttri_auto_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clusttri_auto_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_SUITESPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clusttri_auto_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clusttri_auto_threads_test.cc
index a5a96ae..61efa20 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clusttri_auto_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clusttri_auto_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_SUITESPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clusttri_user_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clusttri_user_test.cc
index a0ff62b..b750cbb 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clusttri_user_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clusttri_user_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_SUITESPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clusttri_user_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clusttri_user_threads_test.cc
index d4bbb98..f704e32 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clusttri_user_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_iterschur_suitesparse_clusttri_user_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_SUITESPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_acceleratesparse_auto_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_acceleratesparse_auto_test.cc
index aedd971..05caf3c 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_acceleratesparse_auto_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_acceleratesparse_auto_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_ACCELERATE_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_acceleratesparse_auto_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_acceleratesparse_auto_threads_test.cc
index 7acfb10..bfd1d4b 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_acceleratesparse_auto_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_acceleratesparse_auto_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_ACCELERATE_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_acceleratesparse_user_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_acceleratesparse_user_test.cc
index ef85783..0017874 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_acceleratesparse_user_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_acceleratesparse_user_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_ACCELERATE_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_acceleratesparse_user_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_acceleratesparse_user_threads_test.cc
index ed3a9a1..7bb7f0b 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_acceleratesparse_user_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_acceleratesparse_user_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_ACCELERATE_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_eigensparse_auto_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_eigensparse_auto_test.cc
index 7177c51..a15553c 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_eigensparse_auto_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_eigensparse_auto_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifdef CERES_USE_EIGEN_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_eigensparse_auto_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_eigensparse_auto_threads_test.cc
index 575ebef..2134295 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_eigensparse_auto_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_eigensparse_auto_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifdef CERES_USE_EIGEN_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_eigensparse_user_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_eigensparse_user_test.cc
index f53a72b..de00ccb 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_eigensparse_user_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_eigensparse_user_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifdef CERES_USE_EIGEN_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_eigensparse_user_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_eigensparse_user_threads_test.cc
index 59f033c..f4ad5e0 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_eigensparse_user_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_eigensparse_user_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifdef CERES_USE_EIGEN_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_suitesparse_auto_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_suitesparse_auto_test.cc
index aa4f28c..f72ca55 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_suitesparse_auto_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_suitesparse_auto_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_SUITESPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_suitesparse_auto_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_suitesparse_auto_threads_test.cc
index 3f0c2a9..d301e5e 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_suitesparse_auto_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_suitesparse_auto_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_SUITESPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_suitesparse_user_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_suitesparse_user_test.cc
index f30254a..db22d6c 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_suitesparse_user_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_suitesparse_user_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_SUITESPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_suitesparse_user_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_suitesparse_user_threads_test.cc
index f29add5..8b97820 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_suitesparse_user_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparsecholesky_suitesparse_user_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_SUITESPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_acceleratesparse_auto_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_acceleratesparse_auto_test.cc
index ba139e1..d4b8dd2 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_acceleratesparse_auto_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_acceleratesparse_auto_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_ACCELERATE_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_acceleratesparse_auto_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_acceleratesparse_auto_threads_test.cc
index 1161cb3..8f7aacf 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_acceleratesparse_auto_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_acceleratesparse_auto_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_ACCELERATE_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_acceleratesparse_user_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_acceleratesparse_user_test.cc
index 934bad2..257cf0d 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_acceleratesparse_user_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_acceleratesparse_user_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_ACCELERATE_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_acceleratesparse_user_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_acceleratesparse_user_threads_test.cc
index 4606e75..dea1a28 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_acceleratesparse_user_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_acceleratesparse_user_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_ACCELERATE_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_eigensparse_auto_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_eigensparse_auto_test.cc
index 758dddb..bcc2cc4 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_eigensparse_auto_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_eigensparse_auto_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifdef CERES_USE_EIGEN_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_eigensparse_auto_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_eigensparse_auto_threads_test.cc
index 28dcc88..e70f9ee 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_eigensparse_auto_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_eigensparse_auto_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifdef CERES_USE_EIGEN_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_eigensparse_user_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_eigensparse_user_test.cc
index 3c66c03..cb408af 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_eigensparse_user_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_eigensparse_user_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifdef CERES_USE_EIGEN_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_eigensparse_user_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_eigensparse_user_threads_test.cc
index f7d8081..8902146 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_eigensparse_user_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_eigensparse_user_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifdef CERES_USE_EIGEN_SPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_suitesparse_auto_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_suitesparse_auto_test.cc
index 22b588a..aaa38c0 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_suitesparse_auto_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_suitesparse_auto_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_SUITESPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_suitesparse_auto_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_suitesparse_auto_threads_test.cc
index 5a6995b..a3f4ad0 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_suitesparse_auto_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_suitesparse_auto_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_SUITESPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_suitesparse_user_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_suitesparse_user_test.cc
index 18c6310..53cad2d 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_suitesparse_user_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_suitesparse_user_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_SUITESPARSE
 
diff --git a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_suitesparse_user_threads_test.cc b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_suitesparse_user_threads_test.cc
index 5cff07d..d23a277 100644
--- a/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_suitesparse_user_threads_test.cc
+++ b/internal/ceres/generated_bundle_adjustment_tests/ba_sparseschur_suitesparse_user_threads_test.cc
@@ -35,8 +35,9 @@
 //
 // This file is generated using generate_bundle_adjustment_tests.py.
 
+#include "ceres/bundle_adjustment_test_util.h"
 #include "ceres/internal/config.h"
-#include "bundle_adjustment_test_util.h"
+#include "gtest/gtest.h"
 
 #ifndef CERES_NO_SUITESPARSE
 
diff --git a/internal/ceres/power_series_expansion_preconditioner.cc b/internal/ceres/power_series_expansion_preconditioner.cc
index 53fdc27..af98646 100644
--- a/internal/ceres/power_series_expansion_preconditioner.cc
+++ b/internal/ceres/power_series_expansion_preconditioner.cc
@@ -32,6 +32,7 @@
 
 #include "ceres/eigen_vector_ops.h"
 #include "ceres/parallel_vector_ops.h"
+#include "ceres/preconditioner.h"
 
 namespace ceres::internal {