fix clang 14 on OSX compilation with Trilinos 14

fix

diff --git a/deal.II-toolchain/platforms/supported/macos.platform b/deal.II-toolchain/platforms/supported/macos.platform
index bbf12c573a6c74af22366041a6779ef3a66ffc4a..888f6005d6bee22bc5dd5a2bf7ff93eee221191e 100644 (file)
--- a/deal.II-toolchain/platforms/supported/macos.platform
+++ b/deal.II-toolchain/platforms/supported/macos.platform
@@ -54,4 +54,7 @@ if [ "$(machine)" = "arm64e" ]; then
   # disable this for now.
   TRILINOS_WITH_SEACAS=OFF
 
+  # Trilinos defaults to c++17 while deal.II 9.5 defaults to c++14 with clang 14,
+  # which then fails to compile when including Kokkos coming from Trilinos:
+  DEAL_II_CONFOPTS="-DCMAKE_CXX_STANDARD=17 ${DEAL_II_CONFOPTS}"
 fi