1 files changed, 4 insertions, 0 deletions
diff --git a/src/build.h b/src/build.h
index 43786f1..e38719c 100644
--- a/src/build.h
+++ b/src/build.h
@@ -178,7 +178,11 @@ struct Builder {
   State* state_;
   const BuildConfig& config_;
   Plan plan_;
+#if __cplusplus < 201703L
   auto_ptr<CommandRunner> command_runner_;
+#else
+  unique_ptr<CommandRunner> command_runner_;  // auto_ptr was removed in C++17.
+#endif
   BuildStatus* status_;
 
  private: