microsoft · titaiwangms · Nov 14, 2025 · Nov 15, 2025 · Nov 15, 2025 · Nov 18, 2025
diff --git a/cmake/deps.txt b/cmake/deps.txt
@@ -34,7 +34,7 @@ microsoft_gsl;https://github.com/microsoft/GSL/archive/refs/tags/v4.0.0.zip;cf36
 microsoft_wil;https://github.com/microsoft/wil/archive/refs/tags/v1.0.230629.1.zip;e4a542a323c070376f7c2d1973d0f7ddbc1d2fa5
 mimalloc;https://github.com/microsoft/mimalloc/archive/refs/tags/v2.1.1.zip;d5ee7d34223d0567892db5179849939c8769dc41
 mp11;https://github.com/boostorg/mp11/archive/refs/tags/boost-1.82.0.zip;9bc9e01dffb64d9e0773b2e44d2f22c51aace063
-onnx;https://github.com/onnx/onnx/archive/refs/tags/v1.19.1.zip;c5215b5697dcdfd71799f001b8c4054a6bba6b09
+onnx;https://github.com/onnx/onnx/archive/refs/heads/rel-1.20.0.zip;c80f558cafc0023b53a1d92fdf9af8548afd7b29
 # Use the latest commit of 10.9-GA
 onnx_tensorrt;https://github.com/onnx/onnx-tensorrt/archive/d5dce67db7c2e64b07e055571f5ec06f7f254de2.zip;01114d3b67650857281fa50faa2e412130a63b69
 protobuf;https://github.com/protocolbuffers/protobuf/archive/refs/tags/v21.12.zip;7cf2733949036c7d52fda017badcab093fe73bfa

diff --git a/cmake/external/onnx b/cmake/external/onnx
diff --git a/cmake/patches/onnx/onnx.patch b/cmake/patches/onnx/onnx.patch
@@ -1,26 +1,26 @@
 diff --git a/CMakeLists.txt b/CMakeLists.txt
-index cc3ef140..f70312ba 100644
+index 4a7df7d71..8462e3293 100644
 --- a/CMakeLists.txt
 +++ b/CMakeLists.txt
-@@ -57,6 +57,7 @@ option(ONNX_USE_LITE_PROTO "Use lite protobuf instead of full." OFF)
+@@ -52,6 +52,7 @@ option(ONNX_USE_LITE_PROTO "Use lite protobuf instead of full." OFF)
  option(ONNX_DISABLE_EXCEPTIONS "Disable exception handling." OFF)
  option(ONNX_DISABLE_STATIC_REGISTRATION "Disable static registration for ONNX operator schemas." OFF)
  option(ONNX_USE_UNITY_BUILD "Enable Unity (Jumbo) build for" OFF)
 +option(ONNX_MINIMAL_BUILD "Build only essential ONNX components" OFF)
  if(WIN32)
    option(ONNX_USE_MSVC_STATIC_RUNTIME "Build with MSVC static runtime" OFF)
  endif()
-@@ -409,14 +410,28 @@ relative_protobuf_generate_cpp(ONNX_PROTO_SRCS
+@@ -399,14 +400,28 @@ relative_protobuf_generate_cpp(ONNX_PROTO_SRCS
 
- add_library(onnx_proto ${ONNX_PROTO_SRCS})
+ add_library(onnx_proto_object OBJECT ${ONNX_PROTO_SRCS})
 
 -file(GLOB_RECURSE __tmp_srcs "${ONNX_ROOT}/onnx/*.h" "${ONNX_ROOT}/onnx/*.cc")
 -file(GLOB_RECURSE onnx_gtests_src "${ONNX_ROOT}/onnx/test/cpp/*.h"
 -    "${ONNX_ROOT}/onnx/test/cpp/*.cc"
 -    "${ONNX_ROOT}/onnx/backend/test/cpp/*.cc"
 -    "${ONNX_ROOT}/onnx/backend/test/cpp/*.h")
 -list(REMOVE_ITEM __tmp_srcs "${ONNX_ROOT}/onnx/cpp2py_export.cc")
--list(REMOVE_ITEM __tmp_srcs ${onnx_gtests_src})
+-list(REMOVE_ITEM __tmp_srcs ${onnx_gtests_src} "${ONNX_ROOT}/onnx/test/cmake/main.cc")
 -list(APPEND ONNX_SRCS ${__tmp_srcs})
 +if(ONNX_MINIMAL_BUILD)
 +    message(STATUS "Configuring ONNX minimal build")
@@ -45,15 +45,15 @@ index cc3ef140..f70312ba 100644
 +    list(APPEND ONNX_SRCS ${__tmp_srcs})
 +endif()
 
- # Hide all symbols we don't need
- set_target_properties(onnx_proto PROPERTIES CXX_VISIBILITY_PRESET hidden)
-@@ -438,19 +453,6 @@ add_onnx_global_defines(onnx_proto)
- target_include_directories(onnx_proto PUBLIC
-   $<BUILD_INTERFACE:${ONNX_ROOT}>
+ set(LINKED_PROTOBUF_TARGET protobuf::libprotobuf)
+ if(ONNX_USE_LITE_PROTO)
+@@ -417,19 +432,7 @@ endif()
+ add_onnx_global_defines(onnx_proto_object)
+ target_include_directories(onnx_proto_object PUBLIC
    $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>)
 -if(MSVC)
 -  # For disabling Protobuf related warnings
--  target_compile_options(onnx_proto PUBLIC
+-  set(protobuf_warnings
 -    /wd4146 # unary minus operator applied to unsigned type,
 -            # result still unsigned
 -    /wd4244 # 'argument': conversion from 'google::
@@ -64,31 +64,19 @@ index cc3ef140..f70312ba 100644
 -    /wd4141 # 'inline': used more than once
 -  )
 -endif()
-
- if(CMAKE_SYSTEM_NAME STREQUAL "AIX")
-   # whole-archive linker option not available on AIX.
++
+ add_library(onnx_proto)
+ target_link_libraries(onnx_proto PUBLIC $<BUILD_INTERFACE:onnx_proto_object>)
+ if(ONNX_ML)
 diff --git a/onnx/defs/nn/old.cc b/onnx/defs/nn/old.cc
-index ad6dd0c1..50259f32 100644
+index 887151217..ac2e8c463 100644
 --- a/onnx/defs/nn/old.cc
 +++ b/onnx/defs/nn/old.cc
-@@ -4091,7 +4091,6 @@ ONNX_OPERATOR_SET_SCHEMA(
+@@ -4152,7 +4152,6 @@ ONNX_OPERATOR_SET_SCHEMA(
      GroupNormalization,
      18,
      OpSchema()
 -        .Deprecate()
          .SetDoc(GroupNormalization_ver18_doc)
          .Attr("epsilon", "The epsilon value to use to avoid division by zero.", AttributeProto::FLOAT, 1e-5f)
          .Attr(
-diff --git a/onnx/defs/schema.h b/onnx/defs/schema.h
-index 7e9bc27f..4b87c5a5 100644
---- a/onnx/defs/schema.h
-+++ b/onnx/defs/schema.h
-@@ -999,7 +999,7 @@ class OpSchemaRegistry final : public ISchemaRegistry {
-   class OpSchemaRegisterOnce final {
-    public:
-     // Export to cpp custom register macro
--    explicit OpSchemaRegisterOnce(
-+    OpSchemaRegisterOnce(
-         OpSchema op_schema,
-         int opset_version_to_load = 0,
-         bool fail_duplicate_schema = true) {
diff --git a/cmake/vcpkg-ports/onnx/binskim.patch b/cmake/vcpkg-ports/onnx/binskim.patch
@@ -1,26 +1,26 @@
 diff --git a/CMakeLists.txt b/CMakeLists.txt
-index cc3ef140..f70312ba 100644
+index 4a7df7d71..8462e3293 100644
 --- a/CMakeLists.txt
 +++ b/CMakeLists.txt
-@@ -57,6 +57,7 @@ option(ONNX_USE_LITE_PROTO "Use lite protobuf instead of full." OFF)
+@@ -52,6 +52,7 @@ option(ONNX_USE_LITE_PROTO "Use lite protobuf instead of full." OFF)
  option(ONNX_DISABLE_EXCEPTIONS "Disable exception handling." OFF)
  option(ONNX_DISABLE_STATIC_REGISTRATION "Disable static registration for ONNX operator schemas." OFF)
  option(ONNX_USE_UNITY_BUILD "Enable Unity (Jumbo) build for" OFF)
 +option(ONNX_MINIMAL_BUILD "Build only essential ONNX components" OFF)
  if(WIN32)
    option(ONNX_USE_MSVC_STATIC_RUNTIME "Build with MSVC static runtime" OFF)
  endif()
-@@ -409,14 +410,28 @@ relative_protobuf_generate_cpp(ONNX_PROTO_SRCS
+@@ -399,14 +400,28 @@ relative_protobuf_generate_cpp(ONNX_PROTO_SRCS
 
- add_library(onnx_proto ${ONNX_PROTO_SRCS})
+ add_library(onnx_proto_object OBJECT ${ONNX_PROTO_SRCS})
 
 -file(GLOB_RECURSE __tmp_srcs "${ONNX_ROOT}/onnx/*.h" "${ONNX_ROOT}/onnx/*.cc")
 -file(GLOB_RECURSE onnx_gtests_src "${ONNX_ROOT}/onnx/test/cpp/*.h"
 -    "${ONNX_ROOT}/onnx/test/cpp/*.cc"
 -    "${ONNX_ROOT}/onnx/backend/test/cpp/*.cc"
 -    "${ONNX_ROOT}/onnx/backend/test/cpp/*.h")
 -list(REMOVE_ITEM __tmp_srcs "${ONNX_ROOT}/onnx/cpp2py_export.cc")
--list(REMOVE_ITEM __tmp_srcs ${onnx_gtests_src})
+-list(REMOVE_ITEM __tmp_srcs ${onnx_gtests_src} "${ONNX_ROOT}/onnx/test/cmake/main.cc")
 -list(APPEND ONNX_SRCS ${__tmp_srcs})
 +if(ONNX_MINIMAL_BUILD)
 +    message(STATUS "Configuring ONNX minimal build")
@@ -45,15 +45,15 @@ index cc3ef140..f70312ba 100644
 +    list(APPEND ONNX_SRCS ${__tmp_srcs})
 +endif()
 
- # Hide all symbols we don't need
- set_target_properties(onnx_proto PROPERTIES CXX_VISIBILITY_PRESET hidden)
-@@ -438,19 +453,6 @@ add_onnx_global_defines(onnx_proto)
- target_include_directories(onnx_proto PUBLIC
-   $<BUILD_INTERFACE:${ONNX_ROOT}>
+ set(LINKED_PROTOBUF_TARGET protobuf::libprotobuf)
+ if(ONNX_USE_LITE_PROTO)
+@@ -417,19 +432,7 @@ endif()
+ add_onnx_global_defines(onnx_proto_object)
+ target_include_directories(onnx_proto_object PUBLIC
    $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>)
 -if(MSVC)
 -  # For disabling Protobuf related warnings
--  target_compile_options(onnx_proto PUBLIC
+-  set(protobuf_warnings
 -    /wd4146 # unary minus operator applied to unsigned type,
 -            # result still unsigned
 -    /wd4244 # 'argument': conversion from 'google::
@@ -64,31 +64,19 @@ index cc3ef140..f70312ba 100644
 -    /wd4141 # 'inline': used more than once
 -  )
 -endif()
-
- if(CMAKE_SYSTEM_NAME STREQUAL "AIX")
-   # whole-archive linker option not available on AIX.
++
+ add_library(onnx_proto)
+ target_link_libraries(onnx_proto PUBLIC $<BUILD_INTERFACE:onnx_proto_object>)
+ if(ONNX_ML)
 diff --git a/onnx/defs/nn/old.cc b/onnx/defs/nn/old.cc
-index ad6dd0c1..50259f32 100644
+index 887151217..ac2e8c463 100644
 --- a/onnx/defs/nn/old.cc
 +++ b/onnx/defs/nn/old.cc
-@@ -4091,7 +4091,6 @@ ONNX_OPERATOR_SET_SCHEMA(
+@@ -4152,7 +4152,6 @@ ONNX_OPERATOR_SET_SCHEMA(
      GroupNormalization,
      18,
      OpSchema()
 -        .Deprecate()
          .SetDoc(GroupNormalization_ver18_doc)
          .Attr("epsilon", "The epsilon value to use to avoid division by zero.", AttributeProto::FLOAT, 1e-5f)
          .Attr(
-diff --git a/onnx/defs/schema.h b/onnx/defs/schema.h
-index 7e9bc27f..4b87c5a5 100644
---- a/onnx/defs/schema.h
-+++ b/onnx/defs/schema.h
-@@ -999,7 +999,7 @@ class OpSchemaRegistry final : public ISchemaRegistry {
-   class OpSchemaRegisterOnce final {
-    public:
-     // Export to cpp custom register macro
--    explicit OpSchemaRegisterOnce(
-+    OpSchemaRegisterOnce(
-         OpSchema op_schema,
-         int opset_version_to_load = 0,
-         bool fail_duplicate_schema = true) {
diff --git a/cmake/vcpkg-ports/onnx/fix-dependency-protobuf.patch b/cmake/vcpkg-ports/onnx/fix-dependency-protobuf.patch
@@ -1,8 +1,8 @@
 diff --git a/CMakeLists.txt b/CMakeLists.txt
-index 47995579..1542b11f 100644
+index 4a7df7d71..257d77e61 100644
 --- a/CMakeLists.txt
 +++ b/CMakeLists.txt
-@@ -169,6 +169,7 @@ if(NOT DEFINED CMAKE_POSITION_INDEPENDENT_CODE)
+@@ -159,6 +159,7 @@ if(NOT DEFINED CMAKE_POSITION_INDEPENDENT_CODE)
    set(CMAKE_POSITION_INDEPENDENT_CODE ON)
  endif()
 
@@ -11,14 +11,14 @@ index 47995579..1542b11f 100644
  if(NOT ONNX_BUILD_CUSTOM_PROTOBUF)
    if((ONNX_USE_LITE_PROTO AND TARGET protobuf::libprotobuf-lite) OR ((NOT ONNX_USE_LITE_PROTO) AND TARGET protobuf::libprotobuf))
 diff --git a/cmake/ONNXConfig.cmake.in b/cmake/ONNXConfig.cmake.in
-index a5129bfd..d450b51e 100644
+index aa1ef47d9..d450b51e5 100644
 --- a/cmake/ONNXConfig.cmake.in
 +++ b/cmake/ONNXConfig.cmake.in
 @@ -4,9 +4,8 @@
  # library version information
  set(ONNX_VERSION "@ONNX_VERSION@")
 
--if((NOT @@ONNX_USE_PROTOBUF_SHARED_LIBS@@) AND @@Build_Protobuf@@)
+-if(NOT @ONNX_USE_PROTOBUF_SHARED_LIBS@)
 -  find_package(Protobuf REQUIRED CONFIG)
 -endif()
 +include(CMakeFindDependencyMacro)

diff --git a/cmake/vcpkg-ports/onnx/portfile.cmake b/cmake/vcpkg-ports/onnx/portfile.cmake
@@ -3,8 +3,8 @@ vcpkg_check_linkage(ONLY_STATIC_LIBRARY)
 vcpkg_from_github(
     OUT_SOURCE_PATH SOURCE_PATH
     REPO onnx/onnx
-    REF "v${VERSION}"
-    SHA512 cf6ff4c0bb6cc16ce5f4d6267480d35f3c7a5fde94d10e1358928ff6e4ec6d756a7c5d34a500e60bbd8eb1912c8af21aa763719321b330f56a0eb6b9b810ef60
+    REF d8d3b072c5cacad5f0bf1adf35fcb549902b1149
+    SHA512 3e03e2e43f097a9abc0e1d871f2b1bb4d619ac7913cce858d713524b380699d9278f1d1080f635f2b590431399ca0ecdb4eaa5cec126da4f39298c6a76370bc0
     PATCHES
         fix-cmakelists.patch
         fix-dependency-protobuf.patch
@@ -36,6 +36,7 @@ vcpkg_cmake_configure(
         "-DProtobuf_PROTOC_EXECUTABLE:FILEPATH=${PROTOC}"
         -DONNX_ML=ON
         -DONNX_USE_PROTOBUF_SHARED_LIBS=${USE_PROTOBUF_SHARED}
+        -DONNX_USE_LITE_PROTO=ON
         -DONNX_USE_MSVC_STATIC_RUNTIME=${USE_STATIC_RUNTIME}
         -DONNX_BUILD_TESTS=OFF
         -DONNX_BUILD_BENCHMARKS=OFF

diff --git a/cmake/vcpkg-ports/onnx/vcpkg.json b/cmake/vcpkg-ports/onnx/vcpkg.json
@@ -1,6 +1,6 @@
 {
   "name": "onnx",
-  "version-semver": "1.19.1",
+  "version-semver": "1.20.0",
   "port-version": 1,
   "description": "Open standard for machine learning interoperability",
   "homepage": "https://onnx.ai",

diff --git a/docs/How_To_Update_ONNX_Dev_Notes.md b/docs/How_To_Update_ONNX_Dev_Notes.md
@@ -34,6 +34,7 @@ git add onnx
 
 1. Modify [cmake/vcpkg-ports/onnx/binskim.patch](/cmake/vcpkg-ports/onnx/binskim.patch) to be the same as [cmake/patches/onnx/onnx.patch](/cmake/patches/onnx/onnx.patch).
 2. The other patches are required/created by vcpkg repository to build ONNX. We just need to re-run diff to makes sure the patches can be applied in the updated ONNX version.
+   a. VCPKG relies these patches to build ONNX.
 3. Update [cmake/vcpkg-ports/onnx/portfile.cmake](/cmake/vcpkg-ports/onnx/portfile.cmake) with the correct commit id and SHA512. (alternatively, build it with the wrong SHA and ORT should tell you the expected one.)
 4. Upload your package: [Follow the instructions](https://microsoft.sharepoint.com/:o:/r/teams/ONNX2/_layouts/15/Doc.aspx?sourcedoc=%7B170774BE-E1C6-4F8B-A3AE-984F211FE410%7D&wd=target(Development.one%7C63D3AB47-51D1-4A62-9965-66882234BD44%2FUpdate%20a%20VCPKG%20package%7CB6AE6A97-94FC-4436-8FC6-08C21AE895DA%2F)&wdpartid=%7BB5CF19CC-40FE-0EC7-32B6-8119B427B32A%7D%7B1%7D&wdsectionfileid=%7B9DD25660-A195-48EA-B9E0-DF8B902AFDD7%7D&ovuser=72f988bf-86f1-41af-91ab-2d7cd011db47%2Ctitaiwang%40microsoft.com&clickparams=eyJBcHBOYW1lIjoiVGVhbXMtRGVza3RvcCIsIkFwcFZlcnNpb24iOiI0OS8yNTA5MTExNjAxNiIsIkhhc0ZlZGVyYXRlZFVzZXIiOmZhbHNlfQ%3D%3D&CID=fb9dcaa1-c0b5-1000-5597-c19e3adf468c&cidOR=SPO)one%7C63d3ab47-51d1-4a62-9965-66882234bd44%2FAdd%20or%20Update%20a%20C%2B%2B%20dependency%7Cb6ae6a97-94fc-4436-8fc6-08c21ae895da%2F%29&wdorigin=NavigationUrl