From 256b338ae3576aaa6a9995d6a5bdbd40ca16cb6d Mon Sep 17 00:00:00 2001
From: billisdead <billisdead@tutanota.com>
Date: Mon, 22 Jun 2026 14:23:38 +0200
Subject: [PATCH] fix: patch worklets and reanimated for Android 15 16KB page
 size support

react-native-worklets and react-native-reanimated compile .so files
without -Wl,-z,max-page-size=16384, causing a native crash at startup
on Android 15 devices that use 16KB memory pages (Pixel 9+, Galaxy S25+).
Patch applied in build-apk.sh and CI workflow after npm install, before
the Gradle build. Guard prevents double-patching on repeated runs.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
---
 .github/workflows/build-android.yml | 11 +++++++++++
 build-apk.sh                        | 16 ++++++++++++++++
 2 files changed, 27 insertions(+)

diff --git a/.github/workflows/build-android.yml b/.github/workflows/build-android.yml
index 29cbdaf..a9e88d4 100644
--- a/.github/workflows/build-android.yml
+++ b/.github/workflows/build-android.yml
@@ -89,6 +89,17 @@ jobs:
           [ -n "$KEYSTORE_STORE_PASSWORD" ] && echo "KEYSTORE_STORE_PASSWORD: set" || echo "KEYSTORE_STORE_PASSWORD: EMPTY"
           [ -n "$KEYSTORE_KEY_PASSWORD" ]   && echo "KEYSTORE_KEY_PASSWORD: set" || echo "KEYSTORE_KEY_PASSWORD: EMPTY"
 
+      - name: Patch native modules for Android 15 16KB page size
+        run: |
+          WORKLETS="node_modules/react-native-worklets/android/CMakeLists.txt"
+          REANIMATED="node_modules/react-native-reanimated/android/CMakeLists.txt"
+          if [ -f "$WORKLETS" ] && ! grep -q "max-page-size" "$WORKLETS"; then
+            printf '\ntarget_link_options(worklets PRIVATE "-Wl,-z,max-page-size=16384")\n' >> "$WORKLETS"
+          fi
+          if [ -f "$REANIMATED" ] && ! grep -q "max-page-size" "$REANIMATED"; then
+            printf '\ntarget_link_options(reanimated PRIVATE "-Wl,-z,max-page-size=16384")\n' >> "$REANIMATED"
+          fi
+
       - name: Build signed APK
         run: ./build-apk.sh
 
diff --git a/build-apk.sh b/build-apk.sh
index 5544ea5..f5256bb 100755
--- a/build-apk.sh
+++ b/build-apk.sh
@@ -77,6 +77,22 @@ info "Running expo prebuild (Android)…"
 cd "$SCRIPT_DIR"
 npx expo prebuild --platform android --clean --no-install
 
+# ─── 4.5. Patch native modules — 16KB page size (Android 15) ──────────────
+info "Patching native modules for 16KB page size support (Android 15)…"
+
+WORKLETS_CMAKE="$SCRIPT_DIR/node_modules/react-native-worklets/android/CMakeLists.txt"
+REANIMATED_CMAKE="$SCRIPT_DIR/node_modules/react-native-reanimated/android/CMakeLists.txt"
+
+if [ -f "$WORKLETS_CMAKE" ] && ! grep -q "max-page-size" "$WORKLETS_CMAKE"; then
+  printf '\ntarget_link_options(worklets PRIVATE "-Wl,-z,max-page-size=16384")\n' >> "$WORKLETS_CMAKE"
+  info "Patched react-native-worklets for 16KB pages"
+fi
+
+if [ -f "$REANIMATED_CMAKE" ] && ! grep -q "max-page-size" "$REANIMATED_CMAKE"; then
+  printf '\ntarget_link_options(reanimated PRIVATE "-Wl,-z,max-page-size=16384")\n' >> "$REANIMATED_CMAKE"
+  info "Patched react-native-reanimated for 16KB pages"
+fi
+
 # ─── 5. Patch build.gradle — inject release signingConfig ──────────────────
 info "Patching android/app/build.gradle for release signing…"