From ed4fe6f2f5b2faaffa53d9649758fce5a64a5001 Mon Sep 17 00:00:00 2001
From: HRN <hamid.r.norouzi@gmail.com>
Date: Mon, 17 Feb 2025 01:13:02 +0330
Subject: [PATCH] Donwloading kokkos and installing tbb is now automatic

---
 CMakeLists.txt     | 25 ++++++++-----------------
 cmake/preReq.cmake | 44 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 52 insertions(+), 17 deletions(-)
 create mode 100644 cmake/preReq.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5bdcde81..546725a1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,30 +3,17 @@ cmake_minimum_required(VERSION 3.16 FATAL_ERROR)
 # set the project name and version
 project(phasicFlow VERSION 1.0 )
 
-set(CMAKE_CXX_STANDARD 17 CACHE STRING "" FORCE)
+set(CMAKE_CXX_STANDARD 20 CACHE STRING "" FORCE)
 set(CMAKE_CXX_STANDARD_REQUIRED True)
 set(CMAKE_INSTALL_PREFIX ${phasicFlow_SOURCE_DIR} CACHE PATH "Install path of phasicFlow" FORCE)
-set(CMAKE_BUILD_TYPE Release CACHE STRING "build type" FORCE)
+set(CMAKE_BUILD_TYPE Release CACHE STRING "build type")
 set(BUILD_SHARED_LIBS ON CACHE BOOL "Build using shared libraries" FORCE)
 mark_as_advanced(FORCE var BUILD_SHARED_LIBS)
 
-message(STATUS ${CMAKE_INSTALL_PREFIX})
+message(STATUS "Install prefix is:" ${CMAKE_INSTALL_PREFIX})
 
 include(cmake/globals.cmake)
 
-#Kokkos directory to be included 
-set(Kokkos_Source_DIR)
-
-if(DEFINED ENV{Kokkos_DIR})
-   set(Kokkos_Source_DIR $ENV{Kokkos_DIR})
-else()
-  set(Kokkos_Source_DIR $ENV{HOME}/Kokkos/kokkos)
-endif()
-message(STATUS "Kokkos source directory is ${Kokkos_Source_DIR}")
-add_subdirectory(${Kokkos_Source_DIR} ./kokkos)
-Kokkos_cmake_settings()
-
-
 option(pFlow_STD_Parallel_Alg "Use TTB std parallel algorithms" ON)
 option(pFlow_Build_Serial "Build phasicFlow and backends for serial execution" OFF)
 option(pFlow_Build_OpenMP "Build phasicFlow and backends for OpenMP execution" OFF)
@@ -34,6 +21,8 @@ option(pFlow_Build_Cuda   "Build phasicFlow and backends for Cuda execution" OFF
 option(pFlow_Build_Double "Build phasicFlow with double precision floating-oint variables" ON)
 option(pFlow_Build_MPI    "Build for MPI parallelization. This will enable multi-gpu run, CPU run on clusters (distributed memory machine). Use this combination Cuda+MPI, OpenMP + MPI or Serial+MPI " OFF)
 
+#for installing the required packages
+include(cmake/preReq.cmake)
 
 if(pFlow_Build_Serial)
 	set(Kokkos_ENABLE_SERIAL ON CACHE BOOL "Serial execution" FORCE) 
@@ -46,7 +35,8 @@ elseif(pFlow_Build_OpenMP )
 	set(Kokkos_ENABLE_OPENMP ON CACHE BOOL "OpenMP execution" FORCE)
 	set(Kokkos_ENABLE_CUDA OFF CACHE BOOL "Cuda execution" FORCE)
 	set(Kokkos_ENABLE_CUDA_LAMBDA OFF CACHE BOOL "Cuda execution" FORCE)
-	set(Kokkos_DEFAULT_HOST_PARALLEL_EXECUTION_SPACE SERIAL CACHE STRING "" FORCE)
+	set(Kokkos_DEFAULT_HOST_PARALLEL_EXECUTION_SPACE Serial CACHE STRING "" FORCE)
+	set(Kokkos_DEFAULT_DEVICE_PARALLEL_EXECUTION_SPACE OpenMP CACHE STRING "" FORCE)
 	set(Kokkos_ENABLE_CUDA_CONSTEXPR OFF CACHE BOOL "Enable constexpr on cuda code" FORCE)
 elseif(pFlow_Build_Cuda)
 	set(Kokkos_ENABLE_SERIAL ON CACHE BOOL "Serial execution" FORCE) 
@@ -65,6 +55,7 @@ include(cmake/makeExecutableGlobals.cmake)
 
 configure_file(phasicFlowConfig.H.in phasicFlowConfig.H)
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
 #add a global include directory 
 include_directories(src/setHelpers src/demComponent "${PROJECT_BINARY_DIR}")
 
diff --git a/cmake/preReq.cmake b/cmake/preReq.cmake
new file mode 100644
index 00000000..5d8c4c24
--- /dev/null
+++ b/cmake/preReq.cmake
@@ -0,0 +1,44 @@
+if(pFlow_STD_Parallel_Alg)
+    # Check if libtbb-dev is installed
+    execute_process(
+        COMMAND dpkg -s libtbb-dev
+        RESULT_VARIABLE TBB_IS_INSTALLED
+        OUTPUT_QUIET
+        ERROR_QUIET)
+
+    if(NOT TBB_IS_INSTALLED EQUAL 0)
+        message(STATUS "libtbb-dev not found. Installing libtbb-dev...")
+        execute_process(
+            COMMAND sudo apt-get update
+            COMMAND sudo apt-get install -y libtbb-dev
+            RESULT_VARIABLE TBB_INSTALL_RESULT)
+            
+        if(NOT TBB_INSTALL_RESULT EQUAL 0)
+            message(FATAL_ERROR "Failed to install libtbb-dev")
+        endif()
+    else()
+        message(STATUS "libtbb-dev is already installed.")
+    endif()
+endif()
+
+cmake_policy(SET CMP0169 OLD)
+
+include(FetchContent)
+
+FetchContent_Declare(
+    kokkos
+    GIT_REPOSITORY https://github.com/kokkos/kokkos.git
+    GIT_TAG 4.3.01
+)
+
+FetchContent_GetProperties(kokkos)
+if(NOT kokkos_POPULATED)
+    message(STATUS "Kokkos source directory not found. Downloading Kokkos version 4.3.01 ...")
+    FetchContent_Populate(kokkos)
+    set(Kokkos_Source_DIR ${kokkos_SOURCE_DIR})
+endif()
+
+message(STATUS "Kokkos source directory is ${Kokkos_Source_DIR}")
+add_subdirectory(${Kokkos_Source_DIR} ./kokkos)
+#Kokkos_cmake_settings()
+