1 files changed, 8 insertions, 0 deletions
diff --git a/Source/FieldSolver/SpectralSolver/SpectralSolver_fwd.H b/Source/FieldSolver/SpectralSolver/SpectralSolver_fwd.H
new file mode 100644
index 000000000..fecd3bd8b
--- /dev/null
+++ b/Source/FieldSolver/SpectralSolver/SpectralSolver_fwd.H
@@ -0,0 +1,8 @@
+/* Copyright 2021 Luca Fedeli
+ *
+ * This file is part of WarpX.
+ *
+ * License: BSD-3-Clause-LBNL
+ */
+
+class SpectralSolver;