From: Daniel Arndt <arndtd@ornl.gov>
Date: Wed, 16 Nov 2022 17:31:53 +0000 (+0000)
Subject: Fix flags for Trilinos+Kokkos
X-Git-Tag: v9.5.0-rc1~828^2~2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=e8f36ef7d0ff93d7c84894e9fa9fecaaa20a2f0e;p=dealii.git

Fix flags for Trilinos+Kokkos
---

diff --git a/cmake/configure/configure_20_trilinos.cmake b/cmake/configure/configure_20_trilinos.cmake
index 6adaf536cb..ff05196e96 100644
--- a/cmake/configure/configure_20_trilinos.cmake
+++ b/cmake/configure/configure_20_trilinos.cmake
@@ -177,12 +177,7 @@ MACRO(FEATURE_TRILINOS_FIND_EXTERNAL var)
     ENDIF()
 
     IF(DEAL_II_TRILINOS_WITH_KOKKOS)
-      CHECK_SYMBOL_EXISTS(
-        "KOKKOS_ENABLE_CUDA"
-        "Kokkos_Macros.hpp"
-        DEAL_II_KOKKOS_CUDA_EXISTS
-        )
-      IF(DEAL_II_KOKKOS_CUDA_EXISTS)
+      IF(Kokkos_ENABLE_CUDA)
         # We need to disable SIMD vectorization for CUDA device code.
         # Otherwise, nvcc compilers from version 9 on will emit an error message like:
         # "[...] contains a vector, which is not supported in device code". We
@@ -191,25 +186,10 @@ MACRO(FEATURE_TRILINOS_FIND_EXTERNAL var)
         SET(DEAL_II_VECTORIZATION_WIDTH_IN_BITS 0)
       ENDIF()
 
-      CHECK_SYMBOL_EXISTS(
-        "KOKKOS_ENABLE_CUDA_LAMBDA"
-        "Kokkos_Macros.hpp"
-        DEAL_II_KOKKOS_LAMBDA_EXISTS
-        )
-      IF(DEAL_II_KOKKOS_LAMBDA_EXISTS)
-        ADD_FLAGS(CMAKE_REQUIRED_FLAGS "--expt-extended-lambda")
-      ENDIF()
-
       # We need a recent version of Trilinos to use kokkos_check. We want to use
       # VERSION_GREATER_EQUAL 13.0 but this requires CMake 3.7
-      IF(TRILINOS_VERSION VERSION_GREATER 12.99)
-        SET(KOKKOS_WITH_OPENMP "")
-        kokkos_check(DEVICES OpenMP RETURN_VALUE KOKKOS_WITH_OPENMP)
-        IF(KOKKOS_WITH_OPENMP)
-          FIND_PACKAGE(OpenMP REQUIRED)
-          ADD_FLAGS(DEAL_II_CXX_FLAGS "${OpenMP_CXX_FLAGS}")
-          ADD_FLAGS(DEAL_II_LINKER_FLAGS "${OpenMP_CXX_FLAGS}")
-        ENDIF()
+      IF(TRILINOS_VERSION VERSION_GREATER 12.99 AND Kokkos_ENABLE_CUDA)
+        KOKKOS_CHECK(OPTIONS CUDA_LAMBDA)
       ENDIF()
     ENDIF()
 
diff --git a/cmake/modules/FindTRILINOS.cmake b/cmake/modules/FindTRILINOS.cmake
index 2caef12839..c5e2960588 100644
--- a/cmake/modules/FindTRILINOS.cmake
+++ b/cmake/modules/FindTRILINOS.cmake
@@ -159,6 +159,8 @@ DEAL_II_PACKAGE_HANDLE(TRILINOS
   USER_INCLUDE_DIRS
     REQUIRED Trilinos_INCLUDE_DIRS
     OPTIONAL Trilinos_TPL_INCLUDE_DIRS
+  CXX_FLAGS
+    OPTIONAL Trilinos_CXX_COMPILER_FLAGS
   LINKER_FLAGS
     OPTIONAL Trilinos_EXTRA_LD_FLAGS
   CLEAR