fix compile for android

.gitea/workflows/android.yml

@@ -23,6 +23,9 @@ concurrency:
 jobs:
   build:
     runs-on: ubuntu-20.04
+    strategy:
+      matrix:
+        build_arch: ["armeabi-v7a", "arm64-v8a", "x86", "x86_64"]
     env:
       TILE_CMAKE_OPTIONS: |
         -DCMAKE_TOOLCHAIN_FILE=$ANDROID_NDK_LATEST_HOME/build/cmake/android.toolchain.cmake \
@@ -31,7 +34,6 @@ jobs:
         -DCMAKE_BUILD_TYPE=Release \
         -DNCNN_VULKAN=ON \
 
-
     steps:
     - uses: actions/checkout@v4
       with: 
@@ -41,32 +43,8 @@ jobs:
         apt-get update -y
         apt-get install -y ninja-build
 
-    - name: armeabi-v7a
+    - name: ${{matrix.build_arch}}
       run: |
-        mkdir build-armeabi-v7a && cd build-armeabi-v7a
-        cmake -GNinja .. ${{ env.TILE_CMAKE_OPTIONS}} -DCMAKE_ABI="armeabi-v7a" -DANDROID_ARM_NEON=ON 
+        mkdir build && cd build
+        cmake -GNinja .. ${{ env.TILE_CMAKE_OPTIONS}} -DCMAKE_ABI="${{matrix.build_arch}}" -DANDROID_ARM_NEON=ON 
         cmake --build . -j $(nproc)
-
-
-    - name: arm64-v8a
-      run: |
-        mkdir build-arm64-v8a && cd build-arm64-v8a
-        cmake -GNinja .. ${{ env.TILE_CMAKE_OPTIONS}} -DCMAKE_ABI="arm64-v8a" 
-        cmake --build . -j $(nproc)
-
-    - name: x86
-      run: |
-        mkdir build-x86 && cd build-x86
-        cmake -GNinja .. ${{ env.TILE_CMAKE_OPTIONS}} -DCMAKE_ABI="x86" 
-        cmake --build . -j $(nproc)
-
-    - name: x86_64
-      run: |
-        mkdir build-x86_64 && cd build-x86_64
-        cmake -GNinja .. ${{ env.TILE_CMAKE_OPTIONS}} -DCMAKE_ABI="x86_64" 
-        cmake --build . -j $(nproc)
-
-
-
-
-

CMakeLists.txt

@@ -32,8 +32,10 @@ option(TILE_BUILD_SHARED "Build shared library" ON)
 option(TILE_WITH_MIMALLOC "Build with mimalloc" OFF)
 
 if(CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_SOURCE_DIR)
-  set(TILE_BUILD_TESTS ON)
-  set(TILE_BUILD_BENCHMARKS ON)
+  if(NOT CMAKE_SYSTEM_NAME STREQUAL "Android")
+    set(TILE_BUILD_TESTS ON)
+    set(TILE_BUILD_BENCHMARKS ON)
+  endif()
 endif()
 
 if(NOT CMAKE_BUILD_TYPE)