re-enable static library mode for WASM (#873)

* re-enable static library mode for wasm

* refine the code

* more refinement

.pipelines/ci.yml

@@ -748,13 +748,24 @@ stages:
     - script: |
         bash ./build.sh \
         -DCMAKE_TOOLCHAIN_FILE=$(Build.BinariesDirectory)/emsdk/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake \
+        -DOCOS_ENABLE_STATIC_LIB=OFF   \
         -DOCOS_ENABLE_SPM_TOKENIZER=ON \
-        -DOCOS_BUILD_PYTHON=OFF \
-        -DOCOS_ENABLE_CV2=OFF \
+        -DOCOS_BUILD_PYTHON=OFF  \
         -DOCOS_ENABLE_VISION=OFF \
-        -DOCOS_ENABLE_CTEST=OFF
-      displayName: build the customop library with onnxruntime
-    # TODO add unittest for webassembly
+        -DOCOS_ENABLE_CTEST=OFF  \
+        -DOCOS_ENABLE_C_API=ON
+      displayName: build ort-extensions as an executable
+
+    - script: |
+        bash ./build.sh \
+        -DCMAKE_TOOLCHAIN_FILE=$(Build.BinariesDirectory)/emsdk/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake \
+        -DOCOS_ENABLE_STATIC_LIB=ON    \
+        -DOCOS_ENABLE_SPM_TOKENIZER=ON \
+        -DOCOS_BUILD_PYTHON=OFF  \
+        -DOCOS_ENABLE_VISION=OFF \
+        -DOCOS_ENABLE_CTEST=OFF  \
+        -DOCOS_ENABLE_C_API=ON
+      displayName: build ort-extensions as a static library
 
 - stage: AndroidBuilds
   dependsOn: []

CMakeLists.txt

@@ -54,7 +54,12 @@ include(CMakeDependentOption)
 
 set(_ORTX_STANDALONE_PROJECT OFF)
 if (CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
-    set(_ORTX_STANDALONE_PROJECT ON)
+  set(_ORTX_STANDALONE_PROJECT ON)
+endif()
+
+set(_ORTX_SHARED_BUILD_SUPPORTED ON)
+if(CMAKE_SYSTEM_NAME STREQUAL "Emscripten")
+  set(_ORTX_SHARED_BUILD_SUPPORTED OFF)
 endif()
 
 option(CC_OPTIMIZE "Allow compiler optimizations, Set to OFF to disable" ON)
@@ -78,11 +83,11 @@ option(OCOS_ENABLE_VISION "Enable the operators in `operators/vision`" ON)
 option(OCOS_ENABLE_AUDIO "Enable the operators for audio processing" ON)
 option(OCOS_ENABLE_AZURE "Enable the operators for azure execution provider" OFF)
 
-option(OCOS_ENABLE_STATIC_LIB "Enable generating static library" OFF)
+option(OCOS_ENABLE_STATIC_LIB "Enable generating static library" OFF) # only for WebAssembly
 option(OCOS_ENABLE_SELECTED_OPLIST "Enable including the selected_ops tool file" OFF)
 option(OCOS_ENABLE_C_API "Enable building the C API" OFF)
 
-option(OCOS_BUILD_SHARED_LIB "Enable building the dynamic library" ON)
+option(OCOS_BUILD_SHARED_LIB "Enable building the dynamic library" ${_ORTX_SHARED_BUILD_SUPPORTED})
 option(OCOS_BUILD_PYTHON "Enable building the Python package" OFF)
 option(OCOS_BUILD_JAVA "Enable building the Java package" OFF)
 option(OCOS_BUILD_ANDROID "Enable building the Android package" OFF)
@@ -773,30 +778,7 @@ if(OCOS_ENABLE_C_API)
 endif()
 
 if(CMAKE_SYSTEM_NAME STREQUAL "Emscripten")
-  if(OCOS_ENABLE_STATIC_LIB)
-    message(FATAL_ERROR "Emscripten build does not support building a static library.")
-  endif()
-  # Emscripten does not support building a shared library with custom ops.
-  # and backward compatible with the previous version, we silently turn off the shared library build.
-  set(OCOS_BUILD_SHARED_LIB OFF CACHE INTERNAL "" FORCE)
-  add_executable(ortcustomops ${_TARGET_LIB_SRC})
-  set_target_properties(ortcustomops PROPERTIES LINK_FLAGS "                                  \
-                      -s WASM=1                                                               \
-                      -s NO_EXIT_RUNTIME=0                                                    \
-                      -s ALLOW_MEMORY_GROWTH=1                                                \
-                      -s SAFE_HEAP=0                                                          \
-                      -s MODULARIZE=1                                                         \
-                      -s SAFE_HEAP_LOG=0                                                      \
-                      -s STACK_OVERFLOW_CHECK=0                                               \
-                      -s EXPORT_ALL=0                                                         \
-                      -s VERBOSE=0                                                            \
-                      --no-entry")
-
-  if(CMAKE_BUILD_TYPE STREQUAL "Debug")
-    set_property(TARGET ortcustomops APPEND_STRING PROPERTY LINK_FLAGS " -s ASSERTIONS=1 -s DEMANGLE_SUPPORT=1")
-  else()
-    set_property(TARGET ortcustomops APPEND_STRING PROPERTY LINK_FLAGS " -s ASSERTIONS=0 -s DEMANGLE_SUPPORT=0")
-  endif()
+  include(ext_wasm)
 else()
   add_library(ortcustomops STATIC ${_TARGET_LIB_SRC})
   if (HAS_SDL)

cmake/ext_apple_framework.cmake

@@ -1,3 +1,6 @@
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License.
+
 if(NOT "${CMAKE_SYSTEM_NAME}" MATCHES "Darwin|iOS")
   message(FATAL_ERROR "Building an Apple framework can only be enabled for MacOS or iOS.")
 endif()

cmake/ext_java.cmake

@@ -1,3 +1,6 @@
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License.
+
 include(FindJava)
 find_package(Java REQUIRED)
 include(UseJava)

cmake/ext_ortlib.cmake

@@ -1,3 +1,6 @@
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License.
+
 if(_ONNXRUNTIME_EMBEDDED)
   set(ONNXRUNTIME_INCLUDE_DIR ${CMAKE_SOURCE_DIR}/../include/onnxruntime/core/session)
   set(ONNXRUNTIME_LIB_DIR "")

cmake/ext_python.cmake

@@ -1,3 +1,6 @@
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License.
+
 block(PROPAGATE Python3_FOUND)
   set(Python3_FIND_REGISTRY NEVER)
   # if we don't set this to NEVER (or possibly LAST) the builds of the wheel for different python versions will fail

cmake/ext_tests.cmake

@@ -1,3 +1,6 @@
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License.
+
 if (OCOS_ENABLE_SELECTED_OPLIST)
   # currently the tests don't handle operator exclusion cleanly.
   message(FATAL_ERROR "Due to usage of OCOS_ENABLE_SELECTED_OPLIST excluding operators the tests are unable to be built and run")

cmake/ext_wasm.cmake

@@ -0,0 +1,30 @@
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# Licensed under the MIT License.
+
+if(OCOS_ENABLE_STATIC_LIB)
+  add_library(ortcustomops STATIC ${_TARGET_LIB_SRC})
+  if (HAS_SDL)
+    target_compile_options(ortcustomops PRIVATE "/sdl")
+  endif()
+  add_library(onnxruntime_extensions ALIAS ortcustomops)
+  standardize_output_folder(ortcustomops)
+else()
+  add_executable(ortcustomops ${_TARGET_LIB_SRC})
+  set_target_properties(ortcustomops PROPERTIES LINK_FLAGS "                                  \
+                      -s WASM=1                                                               \
+                      -s NO_EXIT_RUNTIME=0                                                    \
+                      -s ALLOW_MEMORY_GROWTH=1                                                \
+                      -s SAFE_HEAP=0                                                          \
+                      -s MODULARIZE=1                                                         \
+                      -s SAFE_HEAP_LOG=0                                                      \
+                      -s STACK_OVERFLOW_CHECK=0                                               \
+                      -s EXPORT_ALL=0                                                         \
+                      -s VERBOSE=0                                                            \
+                      --no-entry")
+
+  if(CMAKE_BUILD_TYPE STREQUAL "Debug")
+    set_property(TARGET ortcustomops APPEND_STRING PROPERTY LINK_FLAGS " -s ASSERTIONS=1 -s DEMANGLE_SUPPORT=1")
+  else()
+    set_property(TARGET ortcustomops APPEND_STRING PROPERTY LINK_FLAGS " -s ASSERTIONS=0 -s DEMANGLE_SUPPORT=0")
+  endif()
+endif()