From: Daniel Arndt <daniel.arndt@iwr.uni-heidelberg.de>
Date: Wed, 20 Feb 2019 17:20:23 +0000 (+0100)
Subject: Detect Tpetra support correctly if Trilinos is compiled with CUDA support
X-Git-Tag: v9.1.0-rc1~309^2~6
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ca393d5ddd463c7d716176f5b7c44ca3d70abd2b;p=dealii.git

Detect Tpetra support correctly if Trilinos is compiled with CUDA support
---

diff --git a/cmake/configure/configure_2_trilinos.cmake b/cmake/configure/configure_2_trilinos.cmake
index 9b3c861395..187fed9071 100644
--- a/cmake/configure/configure_2_trilinos.cmake
+++ b/cmake/configure/configure_2_trilinos.cmake
@@ -163,7 +163,15 @@ MACRO(FEATURE_TRILINOS_FIND_EXTERNAL var)
       # Check if Tpetra is usable in fact.
       #
       LIST(APPEND CMAKE_REQUIRED_INCLUDES ${Trilinos_INCLUDE_DIRS})
+      LIST(APPEND CMAKE_REQUIRED_INCLUDES ${MPI_CXX_INCLUDE_PATH})
       ADD_FLAGS(CMAKE_REQUIRED_FLAGS "${DEAL_II_CXX_VERSION_FLAG}")
+      CHECK_SYMBOL_EXISTS(
+        "KOKKOS_ENABLE_CUDA_LAMBDA"
+        "Kokkos_Macros.hpp"
+        DEAL_II_KOKKOS_LAMBDA_EXISTS)
+      IF(${DEAL_II_KOKKOS_LAMBDA_EXISTS})
+        ADD_FLAGS(CMAKE_REQUIRED_FLAGS "--expt-extended-lambda")
+      ENDIF()
       LIST(APPEND CMAKE_REQUIRED_LIBRARIES "${Trilinos_LIBRARIES}")
       CHECK_CXX_SOURCE_COMPILES(
         "