feat: add Windows cross-compilation build script
scripts/build-windows.sh configures and builds with the MinGW-w64 toolchain, collects runtime DLLs (OpenCV, LibRaw, Qt6, MinGW runtime) into dist-windows/, strips release binaries, and packages a ZIP archive. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
Christoph K.
156
scripts/build-windows.sh
Executable file
156
scripts/build-windows.sh
Executable file
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#!/usr/bin/env bash
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# ─────────────────────────────────────────────────────────────────────────────
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# build-windows.sh
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#
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# Cross-compiles photo-converter for Windows (x86_64) using MinGW-w64.
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# Produces a self-contained directory with photo-converter.exe and all
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# required DLLs ready for distribution.
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#
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# Prerequisites (Ubuntu/Debian):
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# sudo apt install mingw-w64 cmake ninja-build
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# # Install MinGW-w64 cross builds of OpenCV, LibRaw, Qt6:
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# # Option A – compile from source with the MinGW toolchain.
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# # Option B – use an MXE (M cross environment) prefix.
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# # https://mxe.cc/
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# # Option C – use pre-built MinGW packages from a provider such as
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# # https://github.com/brechtsanders/winlibs_mingw
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#
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# Usage:
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# bash scripts/build-windows.sh [BUILD_TYPE] [DEPS_PREFIX]
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#
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# BUILD_TYPE Release (default) | Debug | RelWithDebInfo
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# DEPS_PREFIX Path to cross-compiled dependencies
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# (default: /usr/x86_64-w64-mingw32)
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#
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# Example with a custom MXE prefix:
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# bash scripts/build-windows.sh Release /opt/mxe/usr/x86_64-w64-mingw32.static
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# ─────────────────────────────────────────────────────────────────────────────
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set -euo pipefail
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# ── Configuration ─────────────────────────────────────────────────────────────
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BUILD_TYPE="${1:-Release}"
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DEPS_PREFIX="${2:-/usr/x86_64-w64-mingw32}"
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SCRIPT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
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PROJECT_ROOT="$(cd "${SCRIPT_DIR}/.." && pwd)"
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BUILD_DIR="${PROJECT_ROOT}/build-windows"
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DIST_DIR="${PROJECT_ROOT}/dist-windows"
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TOOLCHAIN="${PROJECT_ROOT}/cmake/toolchain-mingw64.cmake"
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echo "========================================================"
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echo " photo-converter Windows Cross-Compilation"
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echo "========================================================"
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echo " Project root : ${PROJECT_ROOT}"
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echo " Build dir : ${BUILD_DIR}"
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echo " Build type : ${BUILD_TYPE}"
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echo " Deps prefix : ${DEPS_PREFIX}"
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echo "========================================================"
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# ── Verify prerequisites ──────────────────────────────────────────────────────
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for tool in x86_64-w64-mingw32-g++ cmake ninja; do
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if ! command -v "${tool}" &>/dev/null; then
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echo "ERROR: '${tool}' not found in PATH." >&2
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echo "Install with: sudo apt install mingw-w64 cmake ninja-build" >&2
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exit 1
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fi
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done
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# ── CMake configure ──────────────────────────────────────────────────────────
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cmake \
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-B "${BUILD_DIR}" \
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-G Ninja \
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-DCMAKE_TOOLCHAIN_FILE="${TOOLCHAIN}" \
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-DCMAKE_BUILD_TYPE="${BUILD_TYPE}" \
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-DCMAKE_INSTALL_PREFIX="${DIST_DIR}" \
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-DCMAKE_PREFIX_PATH="${DEPS_PREFIX}" \
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-DBUILD_TESTS=OFF \
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-DBUILD_GUI=ON \
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"${PROJECT_ROOT}"
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# ── Build ─────────────────────────────────────────────────────────────────────
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cmake --build "${BUILD_DIR}" -- -j"$(nproc)"
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# ── Install to dist dir ───────────────────────────────────────────────────────
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cmake --install "${BUILD_DIR}"
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# ── Collect runtime DLLs ─────────────────────────────────────────────────────
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# MinGW runtime and dependency DLLs must ship alongside the .exe.
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BIN_DIR="${DIST_DIR}/bin"
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mkdir -p "${BIN_DIR}"
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echo ""
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echo "Collecting runtime DLLs..."
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# Helper: copy a DLL if it exists in the sysroot.
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copy_dll() {
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local dll_name="$1"
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local search_paths=(
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"${DEPS_PREFIX}/bin"
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"${DEPS_PREFIX}/lib"
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"/usr/lib/gcc/x86_64-w64-mingw32"
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"/usr/x86_64-w64-mingw32/lib"
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)
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for dir in "${search_paths[@]}"; do
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if [[ -f "${dir}/${dll_name}" ]]; then
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cp -v "${dir}/${dll_name}" "${BIN_DIR}/"
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return 0
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fi
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done
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echo " WARNING: ${dll_name} not found (may be statically linked)" >&2
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return 0
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}
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# MinGW runtime DLLs (may be statically linked via -static-libgcc/-static-libstdc++)
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copy_dll "libgcc_s_seh-1.dll" || true
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copy_dll "libstdc++-6.dll" || true
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copy_dll "libwinpthread-1.dll" || true
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# OpenCV DLLs (names include version number – use glob)
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for dll in "${DEPS_PREFIX}/bin"/libopencv_*.dll; do
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[[ -f "${dll}" ]] && cp -v "${dll}" "${BIN_DIR}/"
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done
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# LibRaw
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copy_dll "libraw.dll" || true
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copy_dll "libraw-23.dll" || true
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# Qt6 DLLs
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for qt_dll in Qt6Core Qt6Gui Qt6Widgets; do
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copy_dll "${qt_dll}.dll" || true
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done
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# Qt platform plugin
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QT_PLATFORMS_SRC="${DEPS_PREFIX}/share/qt6/plugins/platforms"
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if [[ -d "${QT_PLATFORMS_SRC}" ]]; then
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mkdir -p "${BIN_DIR}/platforms"
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cp -v "${QT_PLATFORMS_SRC}/qwindows.dll" "${BIN_DIR}/platforms/" 2>/dev/null || true
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fi
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# ── Strip release binaries ────────────────────────────────────────────────────
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if [[ "${BUILD_TYPE}" == "Release" ]]; then
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echo ""
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echo "Stripping debug symbols from release binaries..."
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x86_64-w64-mingw32-strip --strip-all "${BIN_DIR}/photo-converter.exe" 2>/dev/null || true
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find "${BIN_DIR}" -name "*.dll" -exec x86_64-w64-mingw32-strip --strip-unneeded {} \; 2>/dev/null || true
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fi
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# ── Copy example config ───────────────────────────────────────────────────────
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cp -v "${PROJECT_ROOT}/config.ini" "${DIST_DIR}/config.ini.example"
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# ── Create ZIP archive ────────────────────────────────────────────────────────
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ARCHIVE="${PROJECT_ROOT}/photo-converter-windows-x64-${BUILD_TYPE}.zip"
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if command -v zip &>/dev/null; then
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(cd "${PROJECT_ROOT}" && zip -r "${ARCHIVE}" "dist-windows/")
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echo ""
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echo "Archive: ${ARCHIVE}"
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else
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echo "(zip not available; skipping archive creation)"
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fi
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echo ""
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echo "========================================================"
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echo " Build complete!"
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echo " Output: ${DIST_DIR}"
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echo " Run: wine ${BIN_DIR}/photo-converter.exe --help"
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echo "========================================================"
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