diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5c8bcf1..e4cbcd5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,6 +2,9 @@ cmake_minimum_required(VERSION 3.15.0)
 
 project(LocalSearchSolver LANGUAGES CXX)
 
+# Avoid FetchContent warning.
+cmake_policy(SET CMP0135 NEW)
+
 # Require C++14.
 set(CMAKE_CXX_STANDARD 14)
 
diff --git a/extern/CMakeLists.txt b/extern/CMakeLists.txt
index 4e05343..30010b4 100644
--- a/extern/CMakeLists.txt
+++ b/extern/CMakeLists.txt
@@ -5,6 +5,6 @@ include(FetchContent)
 FetchContent_Declare(
     orproblems
     GIT_REPOSITORY https://github.com/fontanf/orproblems.git
-    GIT_TAG b9e5b32ea612fd2cf23e71de0a969b6dd56ae5d3)
+    GIT_TAG ba099d6bd0ac186e4113fe340789a1800fa72852)
     #SOURCE_DIR "${PROJECT_SOURCE_DIR}/../orproblems/")
 FetchContent_MakeAvailable(orproblems)
diff --git a/src/examples/variables.bzl b/src/examples/variables.bzl
deleted file mode 100644
index b7c4925..0000000
--- a/src/examples/variables.bzl
+++ /dev/null
@@ -1,17 +0,0 @@
-CPLEX_COPTS = select({
-            "//examples:cplex_build": [
-                    "-DCPLEX_FOUND",
-                    "-m64",
-                    "-DIL_STD"],
-            "//conditions:default": []})
-GUROBI_COPTS = select({
-            "//examples:gurobi_build": ["-DGUROBI_FOUND"],
-            "//conditions:default": []})
-
-CPLEX_DEP = select({
-            "//examples:cplex_build": ["@cplex//:cplex"],
-            "//conditions:default": []})
-GUROBI_DEP = select({
-            "//examples:gurobi_build": ["@gurobi//:gurobi"],
-            "//conditions:default": []})
-