Switched to c++ 17

Author: JohanMabille

CMakeLists.txt

@@ -121,6 +121,7 @@ endforeach()
 set(CMAKE_MODULE_PATH "${CMAKE_MODULE_PATH}" "${CMAKE_SOURCE_DIR}/modules")
 
 add_library(xtensor-io INTERFACE)
+target_compile_features(xtensor-io INTERFACE cxx_std_17)
 
 include_directories(${GTEST_INCLUDE_DIRS})
 

test/CMakeLists.txt

@@ -7,7 +7,7 @@
 # The full license is in the file LICENSE, distributed with this software. #
 ############################################################################
 
-cmake_minimum_required(VERSION 3.8)
+cmake_minimum_required(VERSION 3.30)
 
 if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
     project(xtensor-io-test)
@@ -25,12 +25,12 @@ string(TOUPPER "${CMAKE_BUILD_TYPE}" U_CMAKE_BUILD_TYPE)
 
 if (CMAKE_CXX_COMPILER_ID MATCHES "Clang" OR CMAKE_CXX_COMPILER_ID MATCHES "GNU" OR CMAKE_CXX_COMPILER_ID MATCHES "Intel")
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=native -Wunused-parameter -Wextra -Wreorder -Wconversion -Wsign-conversion")
-    CHECK_CXX_COMPILER_FLAG("-std=c++14" HAS_CPP14_FLAG)
+    CHECK_CXX_COMPILER_FLAG("-std=c++17" HAS_CPP17_FLAG)
 
-    if (HAS_CPP14_FLAG)
-        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14")
+    if (HAS_CPP17_FLAG)
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17")
     else()
-        message(FATAL_ERROR "Unsupported compiler -- xtensor requires C++14 support!")
+        message(FATAL_ERROR "Unsupported compiler -- xtensor requires C++17 support!")
     endif()
 endif()