Fix the Bazel build

Change-Id: I864c1a10e21a4d0e985262c61e7fd270da452d05

bazel/ceres.bzl

diff --git a/bazel/ceres.bzl b/bazel/ceres.bzl
index 029cb52..aba3c9d 100644
--- a/bazel/ceres.bzl
+++ b/bazel/ceres.bzl
@@ -213,6 +213,12 @@
         deps = [
             "@eigen//:eigen",
             "@abseil-cpp//absl/log",
+            "@abseil-cpp//absl/container:fixed_array",
+            "@abseil-cpp//absl/container:flat_hash_map",
+            "@abseil-cpp//absl/container:flat_hash_set",
+            "@abseil-cpp//absl/strings",
+            "@abseil-cpp//absl/time",
+            "@abseil-cpp//absl/container:btree",
             "@abseil-cpp//absl/log:check",
         ],
     )

examples/BUILD

diff --git a/examples/BUILD b/examples/BUILD
index 4f68eda..dddc0f9 100644
--- a/examples/BUILD
+++ b/examples/BUILD
@@ -28,17 +28,17 @@
 #
 # Author: mierle@gmail.com (Keir Mierle)
 
-EXAMPLE_COPTS = [
-    # Needed to silence GFlags complaints.
-    "-Wno-sign-compare",
-    # Needed to put fscanf in a function.
-    "-Wno-format-nonliteral",
-]
+
 
 EXAMPLE_DEPS = [
     "//:ceres",
-    "@com_gitlab_libeigen_eigen//:eigen",
-    "@com_github_gflags_gflags//:gflags",
+    "@eigen//:eigen",
+    "@abseil-cpp//absl/log",
+    "@abseil-cpp//absl/flags:parse",
+    "@abseil-cpp//absl/flags:flag",
+    "@abseil-cpp//absl/time",
+    "@abseil-cpp//absl/log:check",
+    "@abseil-cpp//absl/log:initialize",
 ]
 
 cc_binary(
@@ -49,7 +49,6 @@
         "bundle_adjuster.cc",
         "snavely_reprojection_error.h",
     ],
-    copts = EXAMPLE_COPTS,
     deps = EXAMPLE_DEPS,
 )
 
@@ -61,7 +60,6 @@
         "fields_of_experts.h",
         "pgm_image.h",
     ],
-    copts = EXAMPLE_COPTS,
     deps = EXAMPLE_DEPS,
 )
 
@@ -70,7 +68,6 @@
     srcs = [
         "robot_pose_mle.cc",
     ],
-    copts = EXAMPLE_COPTS,
     deps = EXAMPLE_DEPS,
 )
 
@@ -84,7 +81,6 @@
         "slam/pose_graph_2d/pose_graph_2d_error_term.h",
         "slam/pose_graph_2d/types.h",
     ],
-    copts = EXAMPLE_COPTS,
     includes = ["slam"],
     deps = EXAMPLE_DEPS,
 )
@@ -97,7 +93,6 @@
         "slam/pose_graph_3d/pose_graph_3d_error_term.h",
         "slam/pose_graph_3d/types.h",
     ],
-    copts = EXAMPLE_COPTS,
     includes = ["slam"],
     deps = EXAMPLE_DEPS,
 )
@@ -105,7 +100,6 @@
 [cc_binary(
     name = example,
     srcs = [example + ".cc"],
-    copts = EXAMPLE_COPTS,
     deps = EXAMPLE_DEPS,
 ) for example in [
     "circle_fit",