xmr: Add Linux ARM64 (aarch64) library support. (#3567)

* xmr: Add Linux ARM64 (aarch64) library support.

Add cross-compilation toolchain and build step for
aarch64-linux-gnu to the Dockerfile, cgo linker flags for
linux/arm64, and the lib/linux-arm64/ directory.

* eth: Downgrade bridge init failure logs to Warn.

Bridge initialization is expected to fail on simnet since
Across and Polygon bridges only support mainnet and testnet.

* politeia: Downgrade routine sync logs to Debug.

* docs: Update v1.1.0 release notes.

Fix Go version (1.24 not 1.25), add Go 1.24 requirement to
upgrade notes, update commit/contributor counts, add one-time
contributors row.

Author: JoeGruffins

client/asset/eth/eth.go

@@ -2028,26 +2028,26 @@ func (w *ETHWallet) Connect(ctx context.Context) (_ *sync.WaitGroup, err error)
 
 	w.bridges = make(map[string]bridge)
 	if acrossBridge, err := newAcrossBridge(ctx, w.node.contractBackend(), w.node, w.assetID, w.net, w.addr, w.log); err != nil {
-		w.log.Errorf("Failed to initialize Across bridge: %v", err)
+		w.log.Warnf("Failed to initialize Across bridge: %v", err)
 	} else {
 		w.bridges[acrossBridgeName] = acrossBridge
 	}
 
 	/* if usdcBridge, err := newUsdcBridge(w.assetID, w.net, w.node.contractBackend(), w.addr, w.node); err != nil {
-		w.log.Errorf("Failed to initialize USDC bridge: %v", err)
+		w.log.Warnf("Failed to initialize USDC bridge: %v", err)
 	} else {
 		w.bridges[usdcBridgeName] = usdcBridge
 	} */
 
 	if w.assetID == ethID {
 		if polygonBridge, err := newPolygonBridgeEth(ctx, w.node.contractBackend(), w.net, w.addr, w.node, w.log); err != nil {
-			w.log.Errorf("Failed to initialize Polygon bridge for ETH: %v", err)
+			w.log.Warnf("Failed to initialize Polygon bridge for ETH: %v", err)
 		} else {
 			w.bridges[polygonBridgeName] = polygonBridge
 		}
 	} else if w.assetID == polygonID {
 		if polygonBridge, err := newPolygonBridgePolygon(w.node.contractBackend(), w.net, w.log); err != nil {
-			w.log.Errorf("Failed to initialize Polygon bridge for Polygon: %v", err)
+			w.log.Warnf("Failed to initialize Polygon bridge for Polygon: %v", err)
 		} else {
 			w.bridges[polygonBridgeName] = polygonBridge
 		}

client/asset/xmr/Dockerfile

@@ -44,20 +44,24 @@ RUN apt-get update && apt-get install -y \
     gperf \
     xz-utils \
     python-is-python3 \
+    # Linux ARM64 cross-compilation
+    gcc-aarch64-linux-gnu \
+    g++-aarch64-linux-gnu \
     # Windows cross-compilation (MinGW)
     gcc-mingw-w64-x86-64 \
     g++-mingw-w64-x86-64 \
     && rm -rf /var/lib/apt/lists/*
 
-# Clone monero_c with submodules
-RUN git clone --recursive https://github.com/MrCyjaneK/monero_c.git /monero_c
+# Clone monero_c (without --recursive so submodules match the pinned commit)
+RUN git clone https://github.com/MrCyjaneK/monero_c.git /monero_c
 
 WORKDIR /monero_c
 
-# Checkout specific version and apply patches
+# Checkout specific version, sync submodules, and apply patches
 RUN git config --global user.name "bob" && \
     git config --global user.email "bob@nowhere.com" && \
     git checkout 411e8a1cdb3f4c2812d83f28c335d2a4eb18bd29 && \
+    git submodule update --init --recursive && \
     ./apply_patches.sh monero
 
 # Apply our custom patches for allow_mismatched_daemon_version
@@ -73,6 +77,9 @@ RUN sed -i '/_MONERO_Wallet_setTrustedDaemon/a _MONERO_Wallet_setAllowMismatched
 # Build for Linux x86_64
 RUN ./build_single.sh monero x86_64-linux-gnu -j$(nproc)
 
+# Build for Linux ARM64
+RUN ./build_single.sh monero aarch64-linux-gnu -j$(nproc)
+
 # Switch mingw-w64 to use POSIX threading model (required for std::mutex in Boost 1.85+)
 RUN update-alternatives --set x86_64-w64-mingw32-gcc /usr/bin/x86_64-w64-mingw32-gcc-posix && \
     update-alternatives --set x86_64-w64-mingw32-g++ /usr/bin/x86_64-w64-mingw32-g++-posix

client/asset/xmr/README.md

@@ -26,9 +26,12 @@ The shared library must also be available at runtime.
 **Option 1: Copy next to executable (recommended for development)**
 
 ```bash
-# Linux
+# Linux x86_64
 cp client/asset/xmr/lib/linux-amd64/libwallet2_api_c.so ./
 
+# Linux ARM64
+cp client/asset/xmr/lib/linux-arm64/libwallet2_api_c.so ./
+
 # macOS ARM64 (Apple Silicon)
 cp client/asset/xmr/lib/darwin-arm64/libwallet2_api_c.dylib ./
 codesign -s - bisonw
@@ -125,6 +128,7 @@ client/asset/xmr/
 │   └── doc.go      # Package documentation
 └── lib/
     ├── linux-amd64/    # Linux x86_64 library
+    ├── linux-arm64/    # Linux ARM64 library
     ├── darwin-amd64/   # macOS x86_64 library
     ├── darwin-arm64/   # macOS ARM64 library
     ├── windows-amd64/  # Windows x86_64 library
@@ -298,6 +302,8 @@ docker build -t monero_c_builder .
 # Extract libraries to lib/ directories
 docker run --rm monero_c_builder cat /monero_c/release/monero/x86_64-linux-gnu_libwallet2_api_c.so.xz | xz -d > lib/linux-amd64/libwallet2_api_c.so
 
+docker run --rm monero_c_builder cat /monero_c/release/monero/aarch64-linux-gnu_libwallet2_api_c.so.xz | xz -d > lib/linux-arm64/libwallet2_api_c.so
+
 docker run --rm monero_c_builder cat /monero_c/release/monero/x86_64-w64-mingw32_libwallet2_api_c.dll.xz | xz -d > lib/windows-amd64/libwallet2_api_c.dll
 
 docker run --rm monero_c_builder cat /monero_c/release/monero/x86_64-apple-darwin11_libwallet2_api_c.dylib.xz | xz -d > lib/darwin-amd64/libwallet2_api_c.dylib
@@ -307,6 +313,7 @@ docker run --rm monero_c_builder cat /monero_c/release/monero/aarch64-apple-darw
 
 **Supported targets:**
 - Linux x86_64 (`x86_64-linux-gnu`)
+- Linux ARM64 (`aarch64-linux-gnu`)
 - Windows x86_64 (`x86_64-w64-mingw32`)
 - macOS x86_64 (`x86_64-apple-darwin11`)
 - macOS ARM64 (`aarch64-apple-darwin11`)

client/asset/xmr/cxmr/cgo_linux.go

@@ -6,16 +6,17 @@
 package cxmr
 
 // On Linux, the libwallet2_api_c.so library is included in
-// client/asset/xmr/lib/linux-amd64/ and linked automatically via cgo
-// LDFLAGS in wallet.go.
+// client/asset/xmr/lib/linux-amd64/ (x86_64) or linux-arm64/ (aarch64)
+// and linked automatically via cgo LDFLAGS in wallet.go.
 //
 // At runtime, the library is searched for in the following order:
 //  1. Same directory as the executable ($ORIGIN)
 //  2. /usr/lib/bisonw/
 //
 // For development, copy the library next to the executable:
 //
-//	cp client/asset/xmr/lib/linux-amd64/libwallet2_api_c.so ./
+//	cp client/asset/xmr/lib/linux-amd64/libwallet2_api_c.so ./   # x86_64
+//	cp client/asset/xmr/lib/linux-arm64/libwallet2_api_c.so ./   # aarch64
 //
 // For system packaging, install to the application library directory:
 //

client/asset/xmr/cxmr/wallet.go

@@ -10,6 +10,7 @@ package cxmr
 /*
 #cgo LDFLAGS: -lwallet2_api_c
 #cgo linux,amd64 LDFLAGS: -L${SRCDIR}/../lib/linux-amd64 -Wl,-rpath,$ORIGIN -Wl,-rpath,/usr/lib/bisonw
+#cgo linux,arm64 LDFLAGS: -L${SRCDIR}/../lib/linux-arm64 -Wl,-rpath,$ORIGIN -Wl,-rpath,/usr/lib/bisonw
 #cgo darwin,amd64 LDFLAGS: -L${SRCDIR}/../lib/darwin-amd64
 #cgo darwin,arm64 LDFLAGS: -L${SRCDIR}/../lib/darwin-arm64
 #cgo windows,amd64 LDFLAGS: -L${SRCDIR}/../lib/windows-amd64

client/asset/xmr/lib/README.md

@@ -8,6 +8,7 @@ Libraries must be built using the Dockerfile in the parent directory (see below)
 | Directory | Platform | Library |
 |-----------|----------|---------|
 | `linux-amd64/` | Linux x86_64 | `libwallet2_api_c.so` |
+| `linux-arm64/` | Linux ARM64 | `libwallet2_api_c.so` |
 | `windows-amd64/` | Windows x86_64 | `libwallet2_api_c.dll` |
 | `darwin-amd64/` | macOS x86_64 | `libwallet2_api_c.dylib` |
 | `darwin-arm64/` | macOS ARM64 | `libwallet2_api_c.dylib` |
@@ -23,6 +24,8 @@ docker build -t monero_c_builder .
 # Extract libraries
 docker run --rm monero_c_builder cat /monero_c/release/monero/x86_64-linux-gnu_libwallet2_api_c.so.xz | xz -d > lib/linux-amd64/libwallet2_api_c.so
 
+docker run --rm monero_c_builder cat /monero_c/release/monero/aarch64-linux-gnu_libwallet2_api_c.so.xz | xz -d > lib/linux-arm64/libwallet2_api_c.so
+
 docker run --rm monero_c_builder cat /monero_c/release/monero/x86_64-w64-mingw32_libwallet2_api_c.dll.xz | xz -d > lib/windows-amd64/libwallet2_api_c.dll
 
 docker run --rm monero_c_builder cat /monero_c/release/monero/x86_64-apple-darwin11_libwallet2_api_c.dylib.xz | xz -d > lib/darwin-amd64/libwallet2_api_c.dylib
@@ -36,9 +39,12 @@ After building bisonw with XMR support, the library must be available at runtime
 
 **Option 1: Copy library next to executable (recommended for development)**
 ```bash
-# Linux
+# Linux x86_64
 cp lib/linux-amd64/libwallet2_api_c.so ./
 
+# Linux ARM64
+cp lib/linux-arm64/libwallet2_api_c.so ./
+
 # macOS
 cp lib/darwin-arm64/libwallet2_api_c.dylib ./  # or darwin-amd64
 

client/asset/xmr/lib/linux-arm64/.gitkeep

@@ -71,7 +71,7 @@ func (p *Politeia) ProposalsSync() error {
 	// Save the timestamp of the last update check only on success.
 	p.lastSync.Store(time.Now().UTC().Unix())
 
-	p.log.Info("Politeia records were synced.")
+	p.log.Debug("Politeia records were synced.")
 
 	return nil
 }
@@ -412,7 +412,7 @@ func (p *Politeia) proposalsNewUpdate() error {
 	}
 
 	nProposals := len(proposals)
-	p.log.Infof("Loaded %d proposal records from db...", nProposals)
+	p.log.Debugf("Loaded %d proposal records from db...", nProposals)
 
 	// Create proposals map from local db proposals.
 	proposalsMap := make(map[string]struct{})
@@ -518,7 +518,7 @@ func (p *Politeia) proposalsInProgressUpdate() error {
 		}
 	}
 
-	p.log.Infof("Fetching data for %d in-progress proposals...", len(propsInProgress))
+	p.log.Debugf("Fetching data for %d in-progress proposals...", len(propsInProgress))
 
 	for _, prop := range propsInProgress {
 		if err := p.ctx.Err(); err != nil {

dex/politeia/proposals.go

@@ -1,13 +1,17 @@
 # Bison Wallet v1.1.0
 
-This is a major feature release with 397 commits from 18+ contributors. It
+This is a major feature release with 400+ commits from 60+ contributors. It
 introduces Monero support, cross-chain bridging, private atomic swaps, gasless
 EVM redemptions, Politeia governance integration, and significantly expanded
 market making capabilities. All users must update. The protocol is incompatible
 between versions.
 
 ## Important Upgrade Notes
 
+### Go 1.24 Required
+
+The minimum Go version for building from source is now Go 1.24.
+
 ### Protocol Incompatibility
 
 This release introduces per-match swap addresses, which change the trade
@@ -195,7 +199,7 @@ operators should either:
 
 ### Build and CI
 
-- Go 1.25 and updated GitHub actions (#3347)
+- Go 1.24 and updated GitHub actions (#3347)
 - Docker base images updated (#3341)
 - Add more platforms for binary builds (#3073)
 - Implement snap package (#2580)
@@ -241,3 +245,4 @@ operators should either:
 | slightsharp | 2 |
 | Dave Collins | 1 |
 | Jared Tate | 1 |
+| Other one-time contributors | ~45 |