feat: Update NNSDK path and library linking in CMake configurations and Android build script, and add a new script to build all Android examples.

examples/ppocr-det/README.md

@@ -0,0 +1,34 @@
+# PaddleOCR Detection
+
+## 4. Demo Run
+
+### CPP
+
+#### 1. Compile
+
+#### AMLNN SDK Setup
+
+Resolve the AMLNN nnsdk dependency using one of the following methods:
+
+- **Priority 1 – Environment variable (recommended)**
+  ```bash
+  export AMLNN_HOME=/path/to/amlnn-toolkit
+  ```
+- **Priority 3 – Sibling directory fallback** *(automatic)*
+  Place `amlnn-toolkit` as a sibling to `amlnn-model-playground`:
+  ```bash
+  git clone git@github.com:Amlogic-NN/amlnn-toolkit.git ../amlnn-toolkit
+  ```
+
+**Prerequisites:**
+- Android NDK r25c
+- `ANDROID_NDK_PATH` environment variable set
+
+**Build:**
+```bash
+# Build for arm64-v8a
+cd examples/ppocr-det/cpp
+./build-android.sh -a arm64-v8a
+```
+
+The executable will be generated in `build/android/`.

examples/ppocr-det/cpp/build-android.sh

@@ -65,7 +65,8 @@ echo "BUILD_DIR: ${BUILD_DIR}"
 mkdir -p ${BUILD_DIR}
 cd ${BUILD_DIR}
 
-cmake ../../src \
+cmake -Wno-dev ../../src \
+    -DAMLNN_HOME=${AMLNN_HOME:-} \
     -DCMAKE_TOOLCHAIN_FILE=${ANDROID_NDK_PATH}/build/cmake/android.toolchain.cmake \
     -DANDROID_ABI=${TARGET_ABI} \
     -DANDROID_PLATFORM=android-24 \

examples/ppocr-det/cpp/src/CMakeLists.txt

@@ -1,48 +1,38 @@
-cmake_minimum_required(VERSION 3.5)
-project(yolo_world_demo)
-
-set(CMAKE_CXX_STANDARD 17)
-
-# Set NNSDK path
-if(NOT DEFINED NNSDK_DIR)
-    set(NNSDK_DIR "${CMAKE_SOURCE_DIR}/../../../../../amlnn-toolkit/nn_runtime/nnsdk")
-endif()
-set(NNSDK_ROOT "${NNSDK_DIR}")
-message(STATUS "NNSDK_ROOT: ${NNSDK_ROOT}")
-
-include_directories(${NNSDK_ROOT}/include)
-include_directories(${CMAKE_SOURCE_DIR}/../../../../common)
-
-# Set 3rdparty path
-set(3RDPARTY_DIR "${CMAKE_SOURCE_DIR}/../../../../dependency")
-
-if(CMAKE_SYSTEM_NAME STREQUAL "Android")
-    if (ANDROID_ABI STREQUAL "arm64-v8a")
-        link_directories(${NNSDK_ROOT}/android/arm64-v8a)
-    else()
-        link_directories(${NNSDK_ROOT}/android/armeabi-v7a)
-    endif()
-    # Android needs log
-    link_libraries(log)
-elseif(CMAKE_SYSTEM_NAME STREQUAL "Linux")
-    link_directories(${NNSDK_ROOT}/linux/yocto/aarch64-poky-linux)
-endif()
-
-# Find OpenCV
-message(STATUS "OpenCV_DIR: ${OpenCV_DIR}")
-find_package(OpenCV REQUIRED)
-include_directories(${OpenCV_INCLUDE_DIRS})
-
-add_executable(paddleocr_det_demo
-    main.cpp
-    postprocess.cpp
-    postprocess.h
-    clipper.cpp
-    clipper.h
-    ${CMAKE_SOURCE_DIR}/../../../../common/model_loader.cpp
-)
-
-target_link_libraries(paddleocr_det_demo
-    ${OpenCV_LIBS}
-    nnsdk
-)
+cmake_minimum_required(VERSION 3.10...3.27)
+project(yolo_world_demo)
+
+set(CMAKE_CXX_STANDARD 17)
+
+list(APPEND CMAKE_MODULE_PATH "${CMAKE_SOURCE_DIR}/../../../../cmake")
+find_package(AMLNN REQUIRED)
+include_directories(${AMLNN_INCLUDE_DIR})
+link_directories(${AMLNN_LIBRARY_DIR})
+
+include_directories(${CMAKE_SOURCE_DIR}/../../../../common)
+
+# Set 3rdparty path
+set(3RDPARTY_DIR "${CMAKE_SOURCE_DIR}/../../../../dependency")
+
+if(CMAKE_SYSTEM_NAME STREQUAL "Android")
+    # Android needs log
+    link_libraries(log)
+endif()
+
+# Find OpenCV
+message(STATUS "OpenCV_DIR: ${OpenCV_DIR}")
+find_package(OpenCV REQUIRED)
+include_directories(${OpenCV_INCLUDE_DIRS})
+
+add_executable(paddleocr_det_demo
+    main.cpp
+    postprocess.cpp
+    postprocess.h
+    clipper.cpp
+    clipper.h
+    ${CMAKE_SOURCE_DIR}/../../../../common/model_loader.cpp
+)
+
+target_link_libraries(paddleocr_det_demo
+    ${OpenCV_LIBS}
+    ${AMLNN_LIBRARY}
+)