msvc support 1/N

CMakeLists.txt

@@ -296,7 +296,10 @@ if(EXECUTORCH_BUILD_TESTS)
 endif()
 
 # TODO(dbort): Fix these warnings and remove this flag.
-set(_common_compile_options -Wno-deprecated-declarations -fPIC)
+set(_common_compile_options
+    $<$<CXX_COMPILER_ID:MSVC>:/wd4996>
+    $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-Wno-deprecated-declarations -fPIC>
+)
 
 # Let files say "include <executorch/path/to/header.h>".
 # TODO(#6475): This requires/assumes that the repo lives in a directory named
@@ -787,7 +790,10 @@ if(EXECUTORCH_BUILD_PYBIND)
       bundled_module PUBLIC ${_common_include_directories}
     )
     target_compile_options(
-      bundled_module PUBLIC -Wno-deprecated-declarations -fPIC
+      bundled_module
+      PUBLIC $<$<CXX_COMPILER_ID:MSVC>:/wd4996>
+             $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-Wno-deprecated-declarations
+             -fPIC>
     )
   endif()
 
@@ -859,8 +865,14 @@ if(EXECUTORCH_BUILD_PYBIND)
   endif()
 
   # compile options for pybind
-  set(_pybind_compile_options -Wno-deprecated-declarations -fPIC -frtti
-                              -fexceptions
+  set(_pybind_compile_options
+      $<$<CXX_COMPILER_ID:MSVC>:/EHsc
+      /GR
+      /wd4996>
+      $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-Wno-deprecated-declarations
+      -fPIC
+      -frtti
+      -fexceptions>
   )
 
   # util lib

backends/aoti/CMakeLists.txt

@@ -36,9 +36,15 @@ target_include_directories(
          # PyTorch AOTI headers from ExecuTorch's torch detection
          ${TORCH_INCLUDE_DIRS}
 )
-target_compile_options(aoti_common PUBLIC -fexceptions -frtti -fPIC)
+target_compile_options(
+  aoti_common
+  PUBLIC $<$<CXX_COMPILER_ID:MSVC>:/EHsc /GR>
+         $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-fexceptions -frtti -fPIC>
+)
 # Ensure symbols are exported properly
-target_link_options(aoti_common PUBLIC -Wl,--export-dynamic)
+target_link_options(
+  aoti_common PUBLIC $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-Wl,--export-dynamic>
+)
 
 # Link against ExecuTorch libraries and standard libraries
 target_link_libraries(aoti_common PUBLIC extension_tensor ${CMAKE_DL_LIBS})

backends/cuda/CMakeLists.txt

@@ -49,9 +49,14 @@ target_include_directories(
          # PyTorch AOTI headers from ExecutorTorch's torch detection
          ${TORCH_INCLUDE_DIRS}
 )
-target_compile_options(aoti_cuda PUBLIC -fexceptions -frtti -fPIC)
+target_compile_options(
+  aoti_cuda PUBLIC $<$<CXX_COMPILER_ID:MSVC>:/EHsc /GR>
+                   $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-fexceptions -frtti -fPIC>
+)
 # Ensure symbols are exported properly
-target_link_options(aoti_cuda PUBLIC -Wl,--export-dynamic)
+target_link_options(
+  aoti_cuda PUBLIC $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-Wl,--export-dynamic>
+)
 
 # Link against CUDA::cudart, common AOTI library, and PyTorch CUDA libraries
 target_link_libraries(

extension/android/CMakeLists.txt

@@ -18,7 +18,10 @@ endif()
 
 set(EXECUTORCH_ROOT "${CMAKE_CURRENT_SOURCE_DIR}/../..")
 include(${EXECUTORCH_ROOT}/tools/cmake/Utils.cmake)
-set(_common_compile_options -Wno-deprecated-declarations -fPIC)
+set(_common_compile_options
+    $<$<CXX_COMPILER_ID:MSVC>:/wd4996>
+    $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-Wno-deprecated-declarations -fPIC>
+)
 if(NOT ANDROID_PLATFORM)
   set(ANDROID_PLATFORM android-30)
 endif()

extension/llm/custom_ops/CMakeLists.txt

@@ -16,9 +16,14 @@ if(NOT EXECUTORCH_ROOT)
   set(EXECUTORCH_ROOT ${CMAKE_CURRENT_SOURCE_DIR}/../../..)
 endif()
 
-set(_common_compile_options -Wno-deprecated-declarations -fPIC)
+set(_common_compile_options
+    $<$<CXX_COMPILER_ID:MSVC>:/wd4996>
+    $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-Wno-deprecated-declarations -fPIC>
+)
 if(CMAKE_SYSTEM_PROCESSOR MATCHES "arm64|aarch64")
-  list(APPEND _common_compile_options "-march=armv8.2-a+dotprod")
+  list(APPEND _common_compile_options
+       "$<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-march=armv8.2-a+dotprod>"
+  )
 endif()
 
 include(${EXECUTORCH_ROOT}/tools/cmake/Utils.cmake)
@@ -135,8 +140,15 @@ if(EXECUTORCH_BUILD_KERNELS_LLM_AOT)
     target_link_libraries(custom_ops_aot_lib PUBLIC pthreadpool cpuinfo)
   endif()
   target_compile_options(
-    custom_ops_aot_lib PUBLIC -Wno-deprecated-declarations -fPIC -frtti
-                              -fexceptions ${_common_compile_options}
+    custom_ops_aot_lib
+    PUBLIC $<$<CXX_COMPILER_ID:MSVC>:/EHsc
+           /GR
+           /wd4996>
+           $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-Wno-deprecated-declarations
+           -fPIC
+           -frtti
+           -fexceptions>
+           ${_common_compile_options}
   )
 
   install(

extension/module/CMakeLists.txt

@@ -35,7 +35,9 @@ target_include_directories(
   extension_module PUBLIC ${_common_include_directories}
 )
 target_compile_options(
-  extension_module PUBLIC -Wno-deprecated-declarations -fPIC
+  extension_module
+  PUBLIC $<$<CXX_COMPILER_ID:MSVC>:/wd4996>
+         $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-Wno-deprecated-declarations -fPIC>
 )
 
 # Module extension built as a static library. TODO(gjcomer) Remove this target
@@ -50,7 +52,9 @@ target_include_directories(
   extension_module_static PUBLIC ${_common_include_directories}
 )
 target_compile_options(
-  extension_module_static PUBLIC -Wno-deprecated-declarations -fPIC
+  extension_module_static
+  PUBLIC $<$<CXX_COMPILER_ID:MSVC>:/wd4996>
+         $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-Wno-deprecated-declarations -fPIC>
 )
 
 # Install libraries

extension/training/CMakeLists.txt

@@ -70,7 +70,14 @@ if(EXECUTORCH_BUILD_PYBIND)
 
   target_include_directories(_training_lib PRIVATE ${TORCH_INCLUDE_DIRS})
   target_compile_options(
-    _training_lib PUBLIC -Wno-deprecated-declarations -fPIC -frtti -fexceptions
+    _training_lib
+    PUBLIC $<$<CXX_COMPILER_ID:MSVC>:/EHsc
+           /GR
+           /wd4996>
+           $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-Wno-deprecated-declarations
+           -fPIC
+           -frtti
+           -fexceptions>
   )
   target_link_libraries(_training_lib PRIVATE ${_pybind_training_dep_libs})
 

extension/wasm/CMakeLists.txt

@@ -27,7 +27,15 @@ if(NOT EXECUTORCH_ROOT)
 endif()
 
 include(${EXECUTORCH_ROOT}/tools/cmake/Utils.cmake)
-set(_common_compile_options -Wno-deprecated-declarations -fPIC -Wall -Werror)
+set(_common_compile_options
+    $<$<CXX_COMPILER_ID:MSVC>:/W4
+    /WX
+    /wd4996>
+    $<$<NOT:$<CXX_COMPILER_ID:MSVC>>:-Wall
+    -Werror
+    -Wno-deprecated-declarations
+    -fPIC>
+)
 set(_common_include_directories ${EXECUTORCH_ROOT}/..)
 
 set(link_libraries)