create branch

CMakeLists.txt

@@ -1,7 +1,9 @@
 cmake_minimum_required (VERSION 3.18)
 
-set(CMAKE_CXX_STANDARD 14)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_STANDARD 17)
+set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17 -lstdc++fs ")
+
 set(CMAKE_POSITION_INDEPENDENT_CODE ON)
 set(CMAKE_INSTALL_RPATH_USE_LINK_PATH TRUE)
 set(CMAKE_CUDA_SEPARABLE_COMPILATION ON)
@@ -127,7 +129,7 @@ list(APPEND CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake)
 
 target_compile_features(hiop_options
   INTERFACE
-  cxx_std_14
+  cxx_std_17
   cxx_alignas
   cxx_alignof
   cxx_attributes
@@ -237,8 +239,9 @@ if(HIOP_USE_GPU)
     check_language(CUDA)
 
     if(NOT DEFINED CMAKE_CUDA_STANDARD)
-      set(CMAKE_CUDA_STANDARD 14)
+      set(CMAKE_CUDA_STANDARD 17)
       set(CMAKE_CUDA_STANDARD_REQUIRED ON)
+      set(CUDA_NVCC_FLAGS "-std=c++17")
     endif()
 
     if(NOT CMAKE_CUDA_ARCHITECTURES)