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8839314025
Cross-compiles statically-linked rsync binaries with the Android NDK for arm64-v8a (all modern phones) and armeabi-v7a (older 32-bit devices), and uploads them as workflow artifacts for adb push / Termux use. The build is self-contained (optional external libraries disabled; keeps md5/md4 and the bundled zlib) and forces a few configure cache values that can't be probed when cross-compiling: lchmod()/lutimes() off (Bionic doesn't declare them until API 36 though the symbols link), and socketpair / mknod-FIFO / mknod-socket on (Android runs a Linux kernel, so these match the native result). IPv6 is enabled explicitly. Since the binaries are cross-compiled the test suite can't run; the job instead asserts each binary is static and the correct architecture, and smoke-tests `--version` under qemu-user. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
121 lines
4.5 KiB
YAML
121 lines
4.5 KiB
YAML
name: Build static rsync for Android
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# Cross-compiles statically-linked rsync binaries with the Android NDK,
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# suitable for dropping onto a phone (adb push / Termux) with no shared
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# libraries. arm64-v8a covers all modern phones; armeabi-v7a covers older
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# 32-bit devices. The binaries are uploaded as workflow artifacts.
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#
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# These are cross-compiled, so the test suite can't run here; we sanity
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# check that each binary is the right architecture, is static, and that
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# it executes (`--version`) under qemu-user.
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on:
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push:
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branches: [ master ]
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paths-ignore:
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- '.github/workflows/*.yml'
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- '!.github/workflows/android-static-build.yml'
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pull_request:
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branches: [ master ]
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paths-ignore:
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- '.github/workflows/*.yml'
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- '!.github/workflows/android-static-build.yml'
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schedule:
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- cron: '42 8 * * *'
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workflow_dispatch:
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env:
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# Minimum supported API level. 24 (Android 7.0) runs on every modern
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# phone while keeping broad reach; bump if you need newer Bionic APIs.
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ANDROID_API: 24
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jobs:
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build:
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runs-on: ubuntu-latest
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name: ${{ matrix.abi }}
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strategy:
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fail-fast: false
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matrix:
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include:
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- abi: arm64-v8a # modern phones
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triple: aarch64-linux-android
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qemu: qemu-aarch64-static
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- abi: armeabi-v7a # older 32-bit phones
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triple: armv7a-linux-androideabi
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qemu: qemu-arm-static
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steps:
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- uses: actions/checkout@v4
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with:
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fetch-depth: 0
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- name: Install build prerequisites
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run: sudo apt-get update && sudo apt-get install -y autoconf automake gawk qemu-user-static
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- name: Configure and build (${{ matrix.abi }})
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shell: bash
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run: |
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set -euo pipefail
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NDK="${ANDROID_NDK_LATEST_HOME:-$ANDROID_NDK_ROOT}"
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TC="$NDK/toolchains/llvm/prebuilt/linux-x86_64/bin"
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export CC="$TC/${{ matrix.triple }}${ANDROID_API}-clang"
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export AR="$TC/llvm-ar" RANLIB="$TC/llvm-ranlib" STRIP="$TC/llvm-strip"
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export CFLAGS="-O2" LDFLAGS="-static"
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# Bionic doesn't declare lchmod()/lutimes() until API 36, but the
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# symbols link, so configure mis-detects them -- force them off so
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# rsync uses its fallbacks. The other cache vars restore values
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# that configure can't probe when cross-compiling (Android runs a
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# normal Linux kernel, so these match the native Linux result).
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export ac_cv_func_lchmod=no ac_cv_func_lutimes=no \
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rsync_cv_HAVE_SOCKETPAIR=yes \
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rsync_cv_MKNOD_CREATES_FIFOS=yes \
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rsync_cv_MKNOD_CREATES_SOCKETS=yes
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# Self-contained build: drop optional external libraries so the
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# static binary needs nothing at runtime. rsync keeps md5/md4
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# checksums and its bundled zlib.
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./configure --host=${{ matrix.triple }} --build=x86_64-pc-linux-gnu \
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--enable-ipv6 \
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--disable-zstd --disable-lz4 --disable-xxhash --disable-openssl \
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--disable-iconv --disable-iconv-open \
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--disable-acl-support --disable-xattr-support \
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--disable-md2man --disable-roll-simd \
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--with-included-popt --with-included-zlib
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# Generate the awk-built headers serially first so the parallel
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# build can't race on proto.h <- daemon-parm.h.
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make proto.h
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make -j"$(nproc)" rsync
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"$STRIP" rsync
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- name: Verify binary
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shell: bash
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run: |
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set -euo pipefail
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file rsync
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# Gate: must be a statically-linked executable (no interpreter).
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file rsync | grep -q "statically linked"
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if file rsync | grep -q "dynamically linked"; then
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echo "ERROR: binary is not static" >&2; exit 1
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fi
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# Best-effort: confirm it actually runs under qemu-user.
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${{ matrix.qemu }} ./rsync --version | head -3 || \
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echo "WARNING: qemu smoke test did not run cleanly (check on a real device)"
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- name: Package
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shell: bash
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run: |
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set -euo pipefail
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VER=$(sed -n 's/.*RSYNC_VERSION "\([^"]*\)".*/\1/p' version.h)
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out="rsync-${VER}-android-${{ matrix.abi }}"
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mkdir -p dist
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cp rsync "dist/$out"
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( cd dist && sha256sum "$out" > "$out.sha256" )
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echo "ARTIFACT_NAME=rsync-android-${{ matrix.abi }}" >>"$GITHUB_ENV"
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- name: Upload artifact
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uses: actions/upload-artifact@v4
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with:
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name: ${{ env.ARTIFACT_NAME }}
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path: dist/
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