[wasi-nn] Add a new wasi-nn backend openvino (#3603)

core/iwasm/libraries/wasi-nn/cmake/wasi_nn.cmake

@@ -3,13 +3,30 @@
 
 list(APPEND CMAKE_MODULE_PATH ${CMAKE_CURRENT_LIST_DIR})
 
-# Find tensorflow-lite
-find_package(tensorflow_lite REQUIRED)
+if(WAMR_BUILD_WASI_NN_TFLITE EQUAL 1)
+  # Find tensorflow-lite
+  find_package(tensorflow_lite REQUIRED)
+endif()
 
-set(WASI_NN_ROOT ${CMAKE_CURRENT_LIST_DIR}/..)
+if(WAMR_BUILD_WASI_NN_OPENVINO EQUAL 1)
+  if(NOT DEFINED ENV{OpenVINO_DIR})
+    message(FATAL_ERROR
+        "OpenVINO_DIR is not defined. "
+        "Please follow https://docs.openvino.ai/2024/get-started/install-openvino.html,"
+        "install openvino, and set environment variable OpenVINO_DIR."
+        "Like OpenVINO_DIR=/usr/lib/openvino-2023.2/ cmake ..."
+        "Or OpenVINO_DIR=/opt/intel/openvino/ cmake ..."
+    )
+  endif()
+
+  list(APPEND CMAKE_MODULE_PATH $ENV{OpenVINO_DIR})
+  # Find OpenVINO
+  find_package(OpenVINO REQUIRED COMPONENTS Runtime)
+endif()
 
 #
 # wasi-nn general
+set(WASI_NN_ROOT ${CMAKE_CURRENT_LIST_DIR}/..)
 add_library(
   wasi-nn-general
   SHARED
@@ -37,20 +54,34 @@ target_compile_definitions(
 
 #
 # wasi-nn backends
-add_library(
-  wasi-nn-tflite
-  SHARED
-    ${WASI_NN_ROOT}/src/wasi_nn_tensorflowlite.cpp
-)
-#target_link_options(
-#  wasi-nn-tflite
-#  PRIVATE
-#    -Wl,--whole-archive libwasi-nn-general.a
-#    -Wl,--no-whole-archive
-#)
-target_link_libraries(
-  wasi-nn-tflite
-  PUBLIC
-    tensorflow-lite
-    wasi-nn-general
-)
+
+# - tflite
+if(WAMR_BUILD_WASI_NN_TFLITE EQUAL 1)
+  add_library(
+    wasi-nn-tflite
+    SHARED
+      ${WASI_NN_ROOT}/src/wasi_nn_tensorflowlite.cpp
+  )
+  target_link_libraries(
+    wasi-nn-tflite
+    PUBLIC
+      tensorflow-lite
+      wasi-nn-general
+  )
+endif()
+
+# - openvino
+if(WAMR_BUILD_WASI_NN_OPENVINO EQUAL 1)
+  add_library(
+    wasi-nn-openvino
+    SHARED
+      ${WASI_NN_ROOT}/src/wasi_nn_openvino.c
+  )
+  target_link_libraries(
+    wasi-nn-openvino
+    PUBLIC
+      openvino::runtime
+      openvino::runtime::c
+      wasi-nn-general
+  )
+endif()