diff -Naur xyce-9999_or/CMakeLists.txt xyce-9999/CMakeLists.txt
--- xyce-9999_or/CMakeLists.txt 2023-06-24 23:07:37.945271060 +0200
+++ xyce-9999/CMakeLists.txt    2023-06-24 23:07:47.805157816 +0200
@@ -13,7 +13,7 @@
 # system and sets up some critical variables.  Therefore, make an initial call
 # to "project" with "NONE" as the compiler set, then find Trilinos, then set up
 # the compilers and call project again.
-project(Xyce NONE)
+project(Xyce CXX)
 
 # Disable Kokkos warning about not supporting C++ extensions
 set(CMAKE_CXX_EXTENSIONS OFF)