CXX_STANDARD 14 -> 17 (#7608)

android/ops/CMakeLists.txt

 cmake_minimum_required(VERSION 3.4.1)
 set(TARGET torchvision_ops)
 project(${TARGET} CXX)
-set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD 17)
 
 string(APPEND CMAKE_CXX_FLAGS " -DMOBILE")
 

examples/cpp/hello_world/CMakeLists.txt

@@ -17,4 +17,4 @@ add_executable(hello-world main.cpp)
 # which also adds all the necessary torch dependencies.
 target_compile_features(hello-world PUBLIC cxx_range_for)
 target_link_libraries(hello-world TorchVision::TorchVision)
-set_property(TARGET hello-world PROPERTY CXX_STANDARD 14)
+set_property(TARGET hello-world PROPERTY CXX_STANDARD 17)

ios/CMakeLists.txt

 cmake_minimum_required(VERSION 3.4.1)
 set(TARGET torchvision_ops)
 project(${TARGET} CXX)
-set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD 17)
 set(LIBTORCH_HEADER_ROOT ${LIBTORCH_HEADER_ROOT})
 set(LIBRARY_OUTPUT_PATH ../lib)
 

test/tracing/frcnn/CMakeLists.txt

@@ -10,4 +10,4 @@ find_package(Python3 COMPONENTS Development)
 add_executable(test_frcnn_tracing test_frcnn_tracing.cpp)
 target_compile_features(test_frcnn_tracing PUBLIC cxx_range_for)
 target_link_libraries(test_frcnn_tracing ${TORCH_LIBRARIES} TorchVision::TorchVision Python3::Python)
-set_property(TARGET test_frcnn_tracing PROPERTY CXX_STANDARD 14)
+set_property(TARGET test_frcnn_tracing PROPERTY CXX_STANDARD 17)