Some more clean ups for the 3P C++ API's Gradle / CMake integration.

In particular:

  - Copy the extracted SDK sources into $projectDir/build rather than into $projectDir/src/...
  - Remove the unnecessary `addTfLiteNativeDeps` task, which is empty apart from its dependencies.

PiperOrigin-RevId: 707074726

Author: fergushenderson

lite/examples/native_api/android_play_services/cc_api/app/src/main/cpp/Modules/Findtflite_cc_api.cmake

@@ -1,23 +1,25 @@
 # This CMake code fragment determines the location of the tflite_cc_api package.
 
+set(gradle_src_root "${CMAKE_SOURCE_DIR}/../../..")
+
 # tflite_cc_api_DIR is the directory containing the CMakeLists.txt file
 # for building the TFLite-in-Play-services C++ API client SDK source files.
-if (NOT EXISTS "${CMAKE_SOURCE_DIR}/tflite_cc_sdk/CMakeLists.txt")
-        message(SEND_ERROR "CMakeLists.txt not found in ${CMAKE_SOURCE_DIR}/tflite_cc_sdk")
-elseif (NOT EXISTS "${CMAKE_SOURCE_DIR}/tflite_cc_sdk/tensorflow/lite/abi/cc/interpreter.cc")
-        message(SEND_ERROR "tensorflow/lite/abi/cc/interpreter.cc not found in ${CMAKE_SOURCE_DIR}/tflite_cc_sdk")
+if (NOT EXISTS "${gradle_src_root}/build/tflite_cc_sdk/CMakeLists.txt")
+        message(SEND_ERROR "CMakeLists.txt not found in ${gradle_src_root}/build/tflite_cc_sdk")
+elseif (NOT EXISTS "${gradle_src_root}/build/tflite_cc_sdk/tensorflow/lite/abi/cc/interpreter.cc")
+        message(SEND_ERROR "tensorflow/lite/abi/cc/interpreter.cc not found in ${gradle_src_root}/build/tflite_cc_sdk")
 else()
-        set(tflite_cc_api_DIR "${CMAKE_SOURCE_DIR}/tflite_cc_sdk")
+        set(tflite_cc_api_DIR "${gradle_src_root}/build/tflite_cc_sdk")
 endif()
 
 # tflite_cc_api_INCLUDE_DIR is the include directory containing the header
 # files for the TFLite-in-Play-services C++ API.
-if (NOT EXISTS "${CMAKE_SOURCE_DIR}/tflite_cc_sdk/tensorflow/lite/interpreter.h")
-        message(SEND_ERROR "tensorflow/lite/interpreter.h not found in ${CMAKE_SOURCE_DIR}/tflite_cc_sdk")
-elseif (NOT EXISTS "${CMAKE_SOURCE_DIR}/tflite_cc_sdk/tensorflow/lite/abi/cc/interpreter.h")
-        message(SEND_ERROR "tensorflow/lite/abi/cc/interpreter.h not found in ${CMAKE_SOURCE_DIR}/tflite_cc_sdk")
+if (NOT EXISTS "${gradle_src_root}/build/tflite_cc_sdk/tensorflow/lite/interpreter.h")
+        message(SEND_ERROR "tensorflow/lite/interpreter.h not found in ${gradle_src_root}/build/tflite_cc_sdk")
+elseif (NOT EXISTS "${gradle_src_root}/build/tflite_cc_sdk/tensorflow/lite/abi/cc/interpreter.h")
+        message(SEND_ERROR "tensorflow/lite/abi/cc/interpreter.h not found in ${gradle_src_root}/build/tflite_cc_sdk")
 else()
-        set(tflite_cc_api_INCLUDE_DIR "${CMAKE_SOURCE_DIR}/tflite_cc_sdk")
+        set(tflite_cc_api_INCLUDE_DIR "${gradle_src_root}/tflite_cc_sdk")
 endif()
 
 include(FindPackageHandleStandardArgs)

lite/examples/native_api/android_play_services/cc_api/app/tflite-java-extract-cpp-sdk.gradle

@@ -26,22 +26,16 @@ task extractAarContent(dependsOn: copyAarToBuildDir, type: Copy) {
     }
 }
 
-task copySdkSourcesToProjectDir(dependsOn: extractAarContent, type: Copy) {
+task copySdkSourcesToProjectBuildDir(dependsOn: extractAarContent, type: Copy) {
     from "$buildDir/$LIBRARY_NAME/content/cc_sdk"
-    into "$projectDir/src/main/cpp/tflite_cc_sdk"
+    into "$projectDir/build/tflite_cc_sdk"
     doLast {
-        println("copySdkSourcesToProjectDir: copied sdk to $projectDir/src/main/cpp/tflite_cc_sdk")
+        println("copySdkSourcesToProjectBuildDir: copied sdk to $projectDir/build/tflite_cc_sdk")
     }
 }
 
-task addTfLiteNativeDeps(dependsOn: ["copySdkSourcesToProjectDir"]) {
-    doLast {
-        println("addTfLiteNativeDeps: completed")
-    }
-}
-
-preBuild.dependsOn addTfLiteNativeDeps
+preBuild.dependsOn copySdkSourcesToProjectBuildDir
 
 clean {
-    delete "$projectDir/src/main/cpp/tflite_cc_sdk"
+    delete "$projectDir/build/tflite_cc_sdk"
 }