Merge pull request #10517 from ajaysehwal/android-16kb-update

build: add Android 16KB page size flags to Makefile

Author: yyforyongyu

Makefile

@@ -22,6 +22,10 @@ IOS_BUILD_DIR := $(MOBILE_BUILD_DIR)/ios
 IOS_BUILD := $(IOS_BUILD_DIR)/Lndmobile.xcframework
 ANDROID_BUILD_DIR := $(MOBILE_BUILD_DIR)/android
 ANDROID_BUILD := $(ANDROID_BUILD_DIR)/Lndmobile.aar
+# For Android, set max page size to 16KB to support devices using 16KB memory pages.
+# Reference: https://developer.android.com/guide/practices/page-sizes
+ANDROID_MAX_PAGE_SIZE := 16384
+ANDROID_EXTLDFLAGS := -extldflags '-Wl,-z,max-page-size=$(ANDROID_MAX_PAGE_SIZE)'
 
 COMMIT := $(shell git describe --tags --dirty)
 
@@ -494,7 +498,7 @@ macos: mobile-rpc
 android: mobile-rpc
 	@$(call print, "Building Android library ($(ANDROID_BUILD)).")
 	mkdir -p $(ANDROID_BUILD_DIR)
-	$(GOMOBILE_BIN) bind -target=android -androidapi 21 -tags="mobile $(DEV_TAGS) $(RPC_TAGS)" -ldflags "$(RELEASE_LDFLAGS)" -v -o $(ANDROID_BUILD) $(MOBILE_PKG)
+	$(GOMOBILE_BIN) bind -target=android -androidapi 21 -tags="mobile $(DEV_TAGS) $(RPC_TAGS)" -ldflags "$(RELEASE_LDFLAGS) $(ANDROID_EXTLDFLAGS)" -v -o $(ANDROID_BUILD) $(MOBILE_PKG)
 
 #? mobile: Build mobile RPC stubs and project templates for iOS and Android
 mobile: ios android

docs/release-notes/release-notes-0.21.0.md

@@ -378,6 +378,12 @@
   and transitioning the documentation to focus on a more reliable "Simnet" 
   workflow while removing obsolete faucet references.
 
+* [Android Lndmobile 16 KB page size for native libraries](https://github.com/lightningnetwork/lnd/pull/10517)
+  The Android `Lndmobile.aar` build now passes `-Wl,-z,max-page-size=16384` to
+  the linker, keeping the generated native library compatible with newer
+  Android devices that use 16 KB memory pages while preserving compatibility
+  with existing 4 KB page-size devices.
+
 # Contributors (Alphabetical Order)
 
 * bitromortac