fix: support android 15 16k page size

.github/workflows/ci.yaml

@@ -325,4 +325,27 @@ jobs:
           api-level: 31
           arch: x86_64
           profile: Nexus 6
-          script: bash tool/scripts/run_android_integration_test.sh
+          script: bash tool/scripts/run_android_integration_test.sh
+
+  check_android15_16k_page_alignment:
+    name: Check android15 16k page size alignment
+    if: ${{ !contains(github.event.pull_request.labels.*.name, 'ci:skip') }}
+    strategy:
+      matrix:
+        version: ['3.x']
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - uses: actions/setup-java@v1
+        with:
+          java-version: '11'
+      - uses: subosito/flutter-action@v2
+        with:
+          flutter-version: ${{ matrix.version }}
+          cache: true
+      - run: flutter pub get
+      - name: Run flutter build apk
+        run: flutter build apk
+        working-directory: example
+      - name: Check android15 16k page size alignment
+        run: bash tool/scripts/check_android15_16k_page_alignment.sh example/build/app/intermediates/merged_native_libs/release/out/lib/arm64-v8a/libiris_method_channel.so

example/android/build.gradle

@@ -26,6 +26,6 @@ subprojects {
     project.evaluationDependsOn(':app')
 }
 
-task clean(type: Delete) {
+tasks.register("clean", Delete) {
     delete rootProject.buildDir
 }

src/CMakeLists.txt

@@ -27,9 +27,9 @@ add_library(${LIBRARY_NAME} SHARED
   ${SOURCES}
 )
 
-# set_target_properties(hello PROPERTIES
-#   PUBLIC_HEADER hello.h
-#   OUTPUT_NAME "hello"
-# )
-
 target_compile_definitions(${LIBRARY_NAME} PUBLIC DART_SHARED_LIB)
+
+if(ANDROID)
+  # Support Android 15 16k page size
+  target_link_options(${LIBRARY_NAME} PRIVATE "-Wl,-z,max-page-size=16384")
+endif()

tool/scripts/check_android15_16k_page_alignment.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+
+# usage: check_android15_16k_page_alignment.sh path/to/lib.so
+
+SO_FILE="$1"
+
+RED="\e[31m"
+GREEN="\e[32m"
+ENDCOLOR="\e[0m"
+
+res="$(objdump -p ${SO_FILE} | grep LOAD | awk '{ print $NF }' | head -1)"
+if [[ $res =~ "2**14" ]] || [[ $res =~ "2**16" ]]; then
+    echo -e "${SO_FILE}: ALIGNED ($res)"
+    exit 0
+else
+    echo -e "${SO_FILE}: UNALIGNED ($res)"
+    exit 1
+fi