Document repeatable wallet builds

README.md

@@ -90,7 +90,11 @@ To see configuration options:
 ./configure --help
 ```
 
-For a current Ubuntu daemon build, see `doc/build-ubuntu-24.md`.
+For current build notes, see:
+
+- `doc/build-ubuntu-24.md` for native Ubuntu daemon and wallet builds.
+- `doc/build-windows.md` for Windows cross-compilation.
+- `doc/build-wallets.md` for the repeatable desktop wallet quick start.
 
 ---
 

contrib/build-linux-wallet.sh

@@ -0,0 +1,72 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+JOBS="${JOBS:-1}"
+HOST="${HOST:-x86_64-pc-linux-gnu}"
+PREFIX="$ROOT/depends/$HOST"
+BASE_CONFIG="$PREFIX/share/config.site"
+CONFIG_SITE_FILE="${CONFIG_SITE_FILE:-/tmp/agrarian-linux-wallet-config.site}"
+QT_PKG_CONFIG_DIR="${QT_PKG_CONFIG_DIR:-/usr/lib/x86_64-linux-gnu/pkgconfig:/usr/share/pkgconfig}"
+QT_BINDIR="${QT_BINDIR:-/usr/lib/qt5/bin}"
+PROTOC_BINDIR="${PROTOC_BINDIR:-/usr/bin}"
+
+require_cmd() {
+  if ! command -v "$1" >/dev/null 2>&1; then
+    echo "Missing required command: $1" >&2
+    exit 1
+  fi
+}
+
+require_path() {
+  if [[ ! -e "$1" ]]; then
+    echo "Missing required path: $1" >&2
+    exit 1
+  fi
+}
+
+cd "$ROOT"
+
+require_cmd make
+require_cmd pkg-config
+require_cmd gcc
+require_cmd g++
+require_cmd sed
+require_cmd cp
+require_cmd "$PROTOC_BINDIR/protoc"
+require_path "$QT_BINDIR/moc"
+require_path "$QT_BINDIR/uic"
+require_path "$QT_BINDIR/rcc"
+require_path "$QT_BINDIR/lrelease"
+require_path "$QT_BINDIR/lupdate"
+
+echo "Building native depends for $HOST..."
+make -C depends -j"$JOBS"
+require_path "$BASE_CONFIG"
+
+cp "$BASE_CONFIG" "$CONFIG_SITE_FILE"
+sed -i.old \
+  -e "s#^with_qt_bindir=.*#with_qt_bindir='$QT_BINDIR'#" \
+  -e "s#^with_protoc_bindir=.*#with_protoc_bindir='$PROTOC_BINDIR'#" \
+  -e "s#^PKG_CONFIG_LIBDIR=.*#PKG_CONFIG_LIBDIR='$PREFIX/lib/pkgconfig:$PREFIX/share/pkgconfig:$QT_PKG_CONFIG_DIR'#" \
+  "$CONFIG_SITE_FILE"
+
+if [[ ! -f configure ]]; then
+  ./autogen.sh
+fi
+
+echo "Configuring Ubuntu Qt wallet build..."
+CONFIG_SITE="$CONFIG_SITE_FILE" ./configure \
+  --disable-maintainer-mode \
+  --disable-tests \
+  --disable-bench \
+  --with-gui=qt5
+
+echo "Building Ubuntu Qt wallet with JOBS=$JOBS..."
+make -j"$JOBS"
+
+echo "Linux wallet build complete:"
+echo "  $ROOT/src/qt/agrarian-qt"
+echo "  $ROOT/src/agrariand"
+echo "  $ROOT/src/agrarian-cli"
+echo "  $ROOT/src/agrarian-tx"

contrib/build-linux.sh

@@ -3,11 +3,16 @@ set -euo pipefail
 
 ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
 JOBS="${JOBS:-1}"
+MODE="${MODE:-daemon}"
 
 cd "$ROOT"
 
+if [[ ! -f configure ]]; then
   ./autogen.sh
+fi
 
+case "$MODE" in
+  daemon)
     ./configure \
       --without-gui \
       --disable-tests \
@@ -16,6 +21,16 @@ cd "$ROOT"
       --with-miniupnpc=no \
       --with-incompatible-bdb \
       CXXFLAGS="${CXXFLAGS:--O0 -g0 --param ggc-min-expand=1 --param ggc-min-heapsize=32768}"
+    ;;
+  wallet)
+    exec "$ROOT/contrib/build-linux-wallet.sh"
+    ;;
+  *)
+    echo "Unknown MODE: $MODE" >&2
+    echo "Use MODE=daemon or MODE=wallet." >&2
+    exit 2
+    ;;
+esac
 
 make -j"$JOBS"
-echo "Build complete."
+echo "Linux $MODE build complete."

contrib/build-win64-wallet.sh

@@ -0,0 +1,125 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+JOBS="${JOBS:-1}"
+HOST="${HOST:-x86_64-w64-mingw32}"
+PREFIX="$ROOT/depends/$HOST"
+NATIVE_BIN="$PREFIX/native/bin"
+PROTOBUF_VERSION="${PROTOBUF_VERSION:-2.6.1}"
+PROTOBUF_SOURCE="$ROOT/depends/sources/protobuf-$PROTOBUF_VERSION.tar.bz2"
+PROTOBUF_BUILD="${PROTOBUF_BUILD:-/tmp/agrarian-protobuf-$PROTOBUF_VERSION-native}"
+
+require_cmd() {
+  if ! command -v "$1" >/dev/null 2>&1; then
+    echo "Missing required command: $1" >&2
+    exit 1
+  fi
+}
+
+require_path() {
+  if [[ ! -e "$1" ]]; then
+    echo "Missing required path: $1" >&2
+    exit 1
+  fi
+}
+
+copy_first_match() {
+  local name="$1"
+  local match
+  match="$(find "$ROOT/depends/work/build/$HOST" -path "*/qtbase/bin/$name" -type f | sort | tail -n 1 || true)"
+  if [[ -z "$match" ]]; then
+    echo "Could not find Qt host tool after depends build: $name" >&2
+    exit 1
+  fi
+  cp "$match" "$NATIVE_BIN/$name"
+}
+
+ensure_posix_mingw() {
+  require_cmd "$HOST-g++"
+  if ! "$HOST-g++" --version | head -n 1 | grep -qi posix; then
+    cat >&2 <<EOF
+The active $HOST-g++ is not the POSIX threading variant.
+
+On Ubuntu, install the POSIX package and select it:
+  sudo apt-get install -y g++-mingw-w64-x86-64-posix
+  sudo update-alternatives --set $HOST-gcc /usr/bin/$HOST-gcc-posix
+  sudo update-alternatives --set $HOST-g++ /usr/bin/$HOST-g++-posix
+EOF
+    exit 1
+  fi
+}
+
+build_native_protoc() {
+  require_path "$PROTOBUF_SOURCE"
+  rm -rf "$PROTOBUF_BUILD"
+  mkdir -p "$PROTOBUF_BUILD"
+  tar -xjf "$PROTOBUF_SOURCE" -C "$PROTOBUF_BUILD" --strip-components=1
+  chmod -R u+rwX "$PROTOBUF_BUILD"
+  (
+    cd "$PROTOBUF_BUILD"
+    bash configure --disable-shared --without-zlib
+    make -C src protoc -j"$JOBS" SHELL=/bin/bash
+  )
+  cp "$PROTOBUF_BUILD/src/protoc" "$NATIVE_BIN/protoc"
+}
+
+ensure_native_tools() {
+  mkdir -p "$NATIVE_BIN"
+
+  for tool in moc uic rcc; do
+    if [[ ! -x "$NATIVE_BIN/$tool" ]]; then
+      copy_first_match "$tool"
+    fi
+  done
+
+  for tool in lrelease lupdate; do
+    if [[ ! -x "$NATIVE_BIN/$tool" ]]; then
+      require_cmd "$tool"
+      cp "$(command -v "$tool")" "$NATIVE_BIN/$tool"
+    fi
+  done
+
+  if [[ ! -x "$NATIVE_BIN/protoc" ]] || ! "$NATIVE_BIN/protoc" --version | grep -q "libprotoc $PROTOBUF_VERSION"; then
+    build_native_protoc
+  fi
+}
+
+cd "$ROOT"
+
+require_cmd make
+require_cmd tar
+require_cmd find
+require_cmd sort
+require_cmd tail
+require_cmd grep
+require_cmd cp
+ensure_posix_mingw
+
+echo "Building Win64 depends for $HOST..."
+make -C depends HOST="$HOST" NO_QT=0 -j"$JOBS"
+require_path "$PREFIX/share/config.site"
+ensure_native_tools
+
+if [[ ! -f configure ]]; then
+  ./autogen.sh
+fi
+
+echo "Configuring Win64 Qt wallet build..."
+CONFIG_SITE="$PREFIX/share/config.site" ./configure \
+  --prefix=/ \
+  --disable-maintainer-mode \
+  --disable-tests \
+  --disable-bench \
+  --with-gui=qt5 \
+  --with-qt-incdir="$PREFIX/include" \
+  --with-qt-libdir="$PREFIX/lib"
+
+echo "Building Win64 Qt wallet with JOBS=$JOBS..."
+make -j"$JOBS"
+
+echo "Windows wallet build complete:"
+echo "  $ROOT/src/qt/agrarian-qt.exe"
+echo "  $ROOT/src/agrariand.exe"
+echo "  $ROOT/src/agrarian-cli.exe"
+echo "  $ROOT/src/agrarian-tx.exe"

depends/packages/qt.mk

@@ -1,6 +1,6 @@
 PACKAGE=qt
 $(package)_version=5.9.7
-$(package)_download_path=https://download.qt.io/official_releases/qt/5.9/$($(package)_version)/submodules
+$(package)_download_path=https://download.qt.io/new_archive/qt/5.9/$($(package)_version)/submodules
 $(package)_suffix=opensource-src-$($(package)_version).tar.xz
 $(package)_file_name=qtbase-$($(package)_suffix)
 $(package)_sha256_hash=36dd9574f006eaa1e5af780e4b33d11fe39d09fd7c12f3b9d83294174bd28f00
@@ -8,7 +8,7 @@ $(package)_dependencies=openssl zlib
 $(package)_linux_dependencies=freetype fontconfig libxcb libX11 xproto libXext
 $(package)_build_subdir=qtbase
 $(package)_qt_libs=corelib network widgets gui plugins testlib
-$(package)_patches=fix_qt_pkgconfig.patch mac-qmake.conf fix_configure_mac.patch fix_no_printer.patch fix_rcc_determinism.patch fix_riscv64_arch.patch fix_s390x_powerpc_mips_mipsel_architectures.patch xkb-default.patch
+$(package)_patches=mac-qmake.conf
 
 $(package)_qttranslations_file_name=qttranslations-$($(package)_suffix)
 $(package)_qttranslations_sha256_hash=b36da7d93c3ab6fca56b32053bb73bc619c8b192bb89b74e3bcde2705f1c2a14
@@ -59,7 +59,7 @@ $(package)_config_opts += -nomake tests
 $(package)_config_opts += -opensource
 $(package)_config_opts += -openssl-linked
 $(package)_config_opts += -optimized-qmake
-$(package)_config_opts += -pch
+$(package)_config_opts += -no-pch
 $(package)_config_opts += -pkg-config
 $(package)_config_opts += -prefix $(host_prefix)
 $(package)_config_opts += -qt-libpng
@@ -140,10 +140,14 @@ endef
 
 define $(package)_preprocess_cmds
   sed -i.old "s|FT_Get_Font_Format|FT_Get_X11_Font_Format|" qtbase/src/platformsupport/fontdatabases/freetype/qfontengine_ft.cpp && \
+  sed -i.old "/#include <QtCore\/qbytearray.h>/a #include <limits>" qtbase/src/corelib/tools/qbytearraymatcher.h && \
+  sed -i.old "/#include \"qfloat16_p.h\"/a #include <limits>" qtbase/src/corelib/global/qfloat16.cpp && \
+  sed -i.old "s/#if defined(Q_CC_MINGW) || !defined(TOUCHEVENTF_MOVE)/#if (defined(Q_CC_MINGW) \&\& WINVER < 0x0601) || !defined(TOUCHEVENTF_MOVE)/" qtbase/src/plugins/platforms/windows/qwindowsmousehandler.cpp && \
   sed -i.old "s|updateqm.commands = \$$$$\$$$$LRELEASE|updateqm.commands = $($(package)_extract_dir)/qttools/bin/lrelease|" qttranslations/translations/translations.pro && \
   sed -i.old "/updateqm.depends =/d" qttranslations/translations/translations.pro && \
   sed -i.old "s/src_plugins.depends = src_sql src_network/src_plugins.depends = src_network/" qtbase/src/src.pro && \
   sed -i.old "s|X11/extensions/XIproto.h|X11/X.h|" qtbase/src/plugins/platforms/xcb/qxcbxsettings.cpp && \
+  sed -i.old "/SUBDIRS += printsupport/d" qtbase/src/plugins/plugins.pro && \
   sed -i.old -e 's/if \[ "$$$$XPLATFORM_MAC" = "yes" \]; then xspecvals=$$$$(macSDKify/if \[ "$$$$BUILD_ON_MAC" = "yes" \]; then xspecvals=$$$$(macSDKify/' -e 's|/bin/pwd|pwd|' qtbase/configure && \
   sed -i.old 's/CGEventCreateMouseEvent(0, kCGEventMouseMoved, pos, 0)/CGEventCreateMouseEvent(0, kCGEventMouseMoved, pos, kCGMouseButtonLeft)/' qtbase/src/plugins/platforms/cocoa/qcocoacursor.mm && \
   mkdir -p qtbase/mkspecs/macx-clang-linux &&\
@@ -153,16 +157,9 @@ define $(package)_preprocess_cmds
   cp -f $($(package)_patch_dir)/mac-qmake.conf qtbase/mkspecs/macx-clang-linux/qmake.conf && \
   cp -r qtbase/mkspecs/linux-arm-gnueabi-g++ qtbase/mkspecs/agrarian-linux-g++ && \
   sed -i.old "s/arm-linux-gnueabi-/$(host)-/g" qtbase/mkspecs/agrarian-linux-g++/qmake.conf && \
-  patch -p1 -i $($(package)_patch_dir)/fix_qt_pkgconfig.patch &&\
-  patch -p1 -i $($(package)_patch_dir)/fix_configure_mac.patch &&\
-  patch -p1 -i $($(package)_patch_dir)/fix_no_printer.patch &&\
-  patch -p1 -i $($(package)_patch_dir)/fix_rcc_determinism.patch &&\
-  patch -p1 -i $($(package)_patch_dir)/xkb-default.patch &&\
   echo "!host_build: QMAKE_CFLAGS     += $($(package)_cflags) $($(package)_cppflags)" >> qtbase/mkspecs/common/gcc-base.conf && \
   echo "!host_build: QMAKE_CXXFLAGS   += $($(package)_cxxflags) $($(package)_cppflags)" >> qtbase/mkspecs/common/gcc-base.conf && \
   echo "!host_build: QMAKE_LFLAGS     += $($(package)_ldflags)" >> qtbase/mkspecs/common/gcc-base.conf && \
-  patch -p1 -i $($(package)_patch_dir)/fix_riscv64_arch.patch &&\
-  patch -p1 -i $($(package)_patch_dir)/fix_s390x_powerpc_mips_mipsel_architectures.patch &&\
   echo "QMAKE_LINK_OBJECT_MAX = 10" >> qtbase/mkspecs/win32-g++/qmake.conf &&\
   echo "QMAKE_LINK_OBJECT_SCRIPT = object_script" >> qtbase/mkspecs/win32-g++/qmake.conf &&\
   sed -i.old "s|QMAKE_CFLAGS            = |!host_build: QMAKE_CFLAGS            = $($(package)_cflags) $($(package)_cppflags) |" qtbase/mkspecs/win32-g++/qmake.conf && \

doc/build-ubuntu-24.md

@@ -1,10 +1,10 @@
 Copyright (c) 2026 Agrarian Developers
 
-Ubuntu 24.04 Daemon Build Notes
-================================
+Ubuntu 24.04 Build Notes
+========================
 
-These notes describe the native daemon build path tested against current Ubuntu
-24.04 system packages.
+These notes describe the native daemon and desktop wallet build paths tested
+against current Ubuntu 24.04 system packages.
 
 Recommended host size
 ---------------------
@@ -16,7 +16,7 @@ building large translation units.
 Packages
 --------
 
-Install the native build dependencies:
+Install the native daemon build dependencies:
 
     sudo apt-get update
     sudo apt-get install -y \
@@ -24,6 +24,12 @@ Install the native build dependencies:
       libboost-all-dev libevent-dev libgmp-dev libssl-dev \
       libdb5.3-dev libdb5.3++-dev
 
+For the desktop wallet, also install Qt and protobuf tools:
+
+    sudo apt-get install -y \
+      qtbase5-dev qttools5-dev-tools qtchooser \
+      libqrencode-dev libprotobuf-dev protobuf-compiler
+
 Daemon-only build
 -----------------
 
@@ -40,6 +46,35 @@ For the pool daemon, the GUI, tests, bench, ZMQ, and UPnP can be disabled:
       CXXFLAGS="-O0 -g0 --param ggc-min-expand=1 --param ggc-min-heapsize=32768"
     make -j1
 
+The daemon helper runs the same path:
+
+    JOBS=1 ./contrib/build-linux.sh
+
+Qt wallet build
+---------------
+
+For the desktop wallet, use:
+
+    JOBS=1 ./contrib/build-linux-wallet.sh
+
+The wallet helper builds/restores the native depends prefix first, then creates
+a temporary config.site that keeps the depends libraries while allowing system
+Qt 5 tools and pkg-config files to be used.
+
+Defaults:
+
+    HOST=x86_64-pc-linux-gnu
+    QT_BINDIR=/usr/lib/qt5/bin
+    PROTOC_BINDIR=/usr/bin
+    CONFIG_SITE_FILE=/tmp/agrarian-linux-wallet-config.site
+
+Warnings
+--------
+
+Qt 5.15 and protobuf 3.x emit compatibility/deprecation warnings in a few Qt
+translation units. Those warnings are expected while the Windows build remains
+pinned to Qt 5.9.7 and protobuf 2.6.1.
+
 OpenSSL 3
 ---------
 

doc/build-wallets.md

@@ -0,0 +1,90 @@
+Copyright (c) 2026 Agrarian Developers
+
+Desktop Wallet Build Quick Start
+================================
+
+This page records the repeatable desktop wallet build flow for the modernized
+Agrarian tree.
+
+Supported targets
+-----------------
+
+The currently tested desktop wallet targets are:
+
+* Ubuntu 24.04 native x86_64: `src/qt/agrarian-qt`
+* Windows x86_64 cross build from Ubuntu: `src/qt/agrarian-qt.exe`
+
+Use one job on small servers:
+
+    JOBS=1 ./contrib/build-linux-wallet.sh
+    JOBS=1 ./contrib/build-win64-wallet.sh
+
+Use more jobs only when the host has enough memory.
+
+Ubuntu package baseline
+-----------------------
+
+    sudo apt-get update
+    sudo apt-get install -y \
+      build-essential pkg-config autoconf automake libtool bsdmainutils \
+      curl git make tar patch
+
+For the native Ubuntu wallet:
+
+    sudo apt-get install -y \
+      qtbase5-dev qttools5-dev-tools qtchooser \
+      libqrencode-dev libprotobuf-dev protobuf-compiler
+
+For the Windows wallet:
+
+    sudo apt-get install -y \
+      mingw-w64 g++-mingw-w64-x86-64 g++-mingw-w64-x86-64-posix \
+      qttools5-dev-tools
+
+Then select POSIX Mingw-w64 threading:
+
+    sudo update-alternatives --set x86_64-w64-mingw32-gcc /usr/bin/x86_64-w64-mingw32-gcc-posix
+    sudo update-alternatives --set x86_64-w64-mingw32-g++ /usr/bin/x86_64-w64-mingw32-g++-posix
+
+Why the helpers exist
+---------------------
+
+The wallet build is sensitive to tool version mismatches:
+
+* Native Ubuntu uses current system Qt tools and protobuf while keeping the
+  deterministic depends libraries.
+* Windows uses the Qt 5.9.7 and protobuf 2.6.1 libraries from depends. Its host
+  tools must match those libraries closely enough for generated C++ output to
+  compile.
+
+The helper scripts keep those rules in one place so the build is repeatable on a
+fresh server.
+
+Expected artifacts
+------------------
+
+After the Ubuntu wallet build:
+
+    src/qt/agrarian-qt
+    src/agrariand
+    src/agrarian-cli
+    src/agrarian-tx
+
+After the Windows wallet build:
+
+    src/qt/agrarian-qt.exe
+    src/agrariand.exe
+    src/agrarian-cli.exe
+    src/agrarian-tx.exe
+
+Version checks
+--------------
+
+On Ubuntu:
+
+    QT_QPA_PLATFORM=offscreen src/qt/agrarian-qt --version
+    src/agrariand --version
+
+For Windows binaries from the Linux build host:
+
+    file src/qt/agrarian-qt.exe src/agrariand.exe src/agrarian-cli.exe src/agrarian-tx.exe

doc/build-windows.md

@@ -12,9 +12,8 @@ SUPPORTED BUILD METHODS
 
 The following methods are known to work:
 
-1. Linux (Ubuntu 18.04 Bionic recommended)
+1. Linux (Ubuntu 24.04 tested)
    Using the Mingw-w64 cross-compilation toolchain.
-   This is the method used to produce official Windows release binaries.
 
 2. Windows 10+
    Using Windows Subsystem for Linux (WSL) with Mingw-w64.
@@ -40,7 +39,7 @@ WSL allows running a Linux environment directly on Windows without a VM.
 Requirements:
 • Windows 10 (64-bit only)
 • Not supported on Windows Server
-• Ubuntu recommended (tested on Ubuntu 18.04)
+• Ubuntu recommended
 
 ------------------------------------------------------------
 INSTALLING WSL
@@ -53,7 +52,7 @@ INSTALLING WSL
 
 2. Install Ubuntu
    - Open Microsoft Store
-   - Install "Ubuntu 18.04"
+   - Install "Ubuntu"
 
 3. Complete Setup
    - Open command prompt
@@ -76,9 +75,9 @@ GENERAL DEPENDENCIES
 ------------------------------------------------------------
 
     sudo apt update
-    sudo apt upgrade
-    sudo apt install build-essential libtool autotools-dev \
-        automake pkg-config bsdmainutils curl git
+    sudo apt install -y build-essential libtool autotools-dev \
+        automake pkg-config bsdmainutils curl git make tar patch \
+        qttools5-dev-tools
 
 A host toolchain (build-essential) is required because some dependencies
 (e.g., protobuf) build host utilities during the process.
@@ -100,13 +99,16 @@ BUILDING FOR 64-BIT WINDOWS
 
 Install Mingw-w64 toolchain:
 
-    sudo apt install g++-mingw-w64-x86-64
+    sudo apt install -y \
+        mingw-w64 g++-mingw-w64-x86-64 g++-mingw-w64-x86-64-posix
 
-Ubuntu 18.04:
+Select the POSIX thread model (required):
 
-    sudo update-alternatives --config x86_64-w64-mingw32-g++
+    sudo update-alternatives --set x86_64-w64-mingw32-gcc \
+        /usr/bin/x86_64-w64-mingw32-gcc-posix
+    sudo update-alternatives --set x86_64-w64-mingw32-g++ \
+        /usr/bin/x86_64-w64-mingw32-g++-posix
 
-Select the POSIX thread model (required).
 
 ------------------------------------------------------------
 IMPORTANT (WSL USERS)
@@ -122,13 +124,33 @@ Autoconf scripts will fail.
 BUILD COMMANDS
 ------------------------------------------------------------
 
+Recommended portable helper:
+
+    JOBS=1 ./contrib/build-win64-wallet.sh
+
+The helper:
+
+• Verifies the POSIX Mingw-w64 thread model.
+• Builds the Win64 depends tree with Qt enabled.
+• Stages matching Qt host tools (`moc`, `uic`, `rcc`) into the depends prefix.
+• Builds/stages protobuf 2.6.1 `protoc` when system `protoc` is newer.
+• Configures the wallet against the generated depends prefix.
+
+Manual equivalent:
+
     PATH=$(echo "$PATH" | sed -e 's/:\/mnt.*//g')
     cd depends
-    make HOST=x86_64-w64-mingw32
+    make HOST=x86_64-w64-mingw32 NO_QT=0
     cd ..
     ./autogen.sh
     CONFIG_SITE=$PWD/depends/x86_64-w64-mingw32/share/config.site \
-        ./configure --prefix=/
+        ./configure --prefix=/ \
+          --disable-maintainer-mode \
+          --disable-tests \
+          --disable-bench \
+          --with-gui=qt5 \
+          --with-qt-incdir=$PWD/depends/x86_64-w64-mingw32/include \
+          --with-qt-libdir=$PWD/depends/x86_64-w64-mingw32/lib
     make
 
 ============================================================
@@ -193,6 +215,14 @@ The win32 model conflicts with certain C++11 headers
 You MUST select the POSIX thread model when prompted by
 update-alternatives.
 
+============================================================
+PROTOBUF NOTE
+============================================================
+
+The Windows depends build uses protobuf 2.6.1 headers and libraries. Do not use
+a newer system `protoc` to regenerate wallet sources for this target. The helper
+builds and stages a matching native `protoc` when needed.
+
 ============================================================
 END OF DOCUMENT
 ============================================================

src/qt/optionsmodel.cpp

@@ -219,12 +219,12 @@ QVariant OptionsModel::data(const QModelIndex& index, int role) const
             return settings.value("fUseProxy", false);
         case ProxyIP: {
             // contains IP at index 0 and port at index 1
-            QStringList strlIpPort = settings.value("addrProxy").toString().split(":", Qt::SkipEmptyParts);
+            QStringList strlIpPort = settings.value("addrProxy").toString().split(":", QString::SkipEmptyParts);
             return strlIpPort.at(0);
         }
         case ProxyPort: {
             // contains IP at index 0 and port at index 1
-            QStringList strlIpPort = settings.value("addrProxy").toString().split(":", Qt::SkipEmptyParts);
+            QStringList strlIpPort = settings.value("addrProxy").toString().split(":", QString::SkipEmptyParts);
             return strlIpPort.at(1);
         }
 
@@ -308,7 +308,7 @@ bool OptionsModel::setData(const QModelIndex& index, const QVariant& value, int
             break;
         case ProxyIP: {
             // contains current IP at index 0 and current port at index 1
-            QStringList strlIpPort = settings.value("addrProxy").toString().split(":", Qt::SkipEmptyParts);
+            QStringList strlIpPort = settings.value("addrProxy").toString().split(":", QString::SkipEmptyParts);
             // if that key doesn't exist or has a changed IP
             if (!settings.contains("addrProxy") || strlIpPort.at(0) != value.toString()) {
                 // construct new value from new IP and current port
@@ -319,7 +319,7 @@ bool OptionsModel::setData(const QModelIndex& index, const QVariant& value, int
         } break;
         case ProxyPort: {
             // contains current IP at index 0 and current port at index 1
-            QStringList strlIpPort = settings.value("addrProxy").toString().split(":", Qt::SkipEmptyParts);
+            QStringList strlIpPort = settings.value("addrProxy").toString().split(":", QString::SkipEmptyParts);
             // if that key doesn't exist or has a changed port
             if (!settings.contains("addrProxy") || strlIpPort.at(1) != value.toString()) {
                 // construct new value from current IP and new port

src/qt/paymentserver.cpp

@@ -600,7 +600,7 @@ void PaymentServer::fetchPaymentACK(CWallet* wallet, SendCoinsRecipient recipien
         }
     }
 
-    int length = static_cast<int>(payment.ByteSizeLong());
+    int length = payment.ByteSize();
     netRequest.setHeader(QNetworkRequest::ContentLengthHeader, length);
     QByteArray serData(length, '\0');
     if (payment.SerializeToArray(serData.data(), length)) {

src/qt/transactionview.cpp

@@ -231,7 +231,7 @@ void TransactionView::setModel(WalletModel* model)
 
         if (model->getOptionsModel()) {
             // Add third party transaction URLs to context menu
-            QStringList listUrls = model->getOptionsModel()->getThirdPartyTxUrls().split("|", Qt::SkipEmptyParts);
+            QStringList listUrls = model->getOptionsModel()->getThirdPartyTxUrls().split("|", QString::SkipEmptyParts);
             for (int i = 0; i < listUrls.size(); ++i) {
                 QString host = QUrl(listUrls[i].trimmed(), QUrl::StrictMode).host();
                 if (!host.isEmpty()) {