From bf720744fdbb3ebe65ca404f8429df46b97ce466 Mon Sep 17 00:00:00 2001
From: Mizux Seiha <mizux.dev@gmail.com>
Date: Thu, 6 Oct 2022 14:05:23 +0200
Subject: [PATCH] cmake: Fix highs_interface.cc

---
 ortools/linear_solver/highs_interface.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/ortools/linear_solver/highs_interface.cc b/ortools/linear_solver/highs_interface.cc
index 1d99289867..3b815620cc 100644
--- a/ortools/linear_solver/highs_interface.cc
+++ b/ortools/linear_solver/highs_interface.cc
@@ -11,6 +11,8 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+#if defined(USE_HIGHS)
+
 #include <atomic>
 #include <cstdint>
 #include <optional>
@@ -309,3 +311,4 @@ MPSolverInterface* BuildHighsInterface(MPSolver* const solver,
 }
 
 }  // namespace operations_research
+#endif  // #if defined(USE_HIGHS)