now accepts both kokkos on Home folder and automatic download

cmake/preReq.cmake

@@ -23,8 +23,12 @@ endif()
 
 cmake_policy(SET CMP0169 OLD)
 
-include(FetchContent)
+# Kokkos folder creation 
+set(Kokkos_Source_DIR $ENV{HOME}/Kokkos/kokkos)
 
+if(NOT EXISTS "${Kokkos_Source_DIR}/CMakeLists.txt")
+
+    include(FetchContent)
     FetchContent_Declare(
         kokkos
         GIT_REPOSITORY https://github.com/kokkos/kokkos.git
@@ -38,6 +42,8 @@ if(NOT kokkos_POPULATED)
         set(Kokkos_Source_DIR ${kokkos_SOURCE_DIR})
     endif()
 
+endif()
+
 message(STATUS "Kokkos source directory is ${Kokkos_Source_DIR}")
 add_subdirectory(${Kokkos_Source_DIR} ./kokkos)
 #Kokkos_cmake_settings()