swift-android-sdk · finagolfin · Feb 11, 2026 · Feb 11, 2026 · Feb 12, 2026
diff --git a/.github/workflows/pull_request.yml b/.github/workflows/pull_request.yml
@@ -25,3 +25,156 @@ jobs:
           name: docker-logs
           path: |
             *.log
+
+   android-build:
+     name: Android ${{ matrix.build-type }} ${{ matrix.swift-version }} ${{ matrix.arch }} ${{ matrix.runner }} (compiler=${{ matrix.build-compiler }})
+     strategy:
+       fail-fast: false
+       matrix:
+         include:
+           - swift-version: 'tag:swift-DEVELOPMENT-SNAPSHOT-2026-02-06-a'
+             build-type: 'docker'
+             build-compiler: '1'
+             runner: 'ubuntu-24.04'
+           - swift-version: 'tag:swift-6.3-DEVELOPMENT-SNAPSHOT-2026-01-29-a'
+             build-type: 'local'
+             build-compiler: '1'
+             runner: 'ubuntu-24.04'
+     runs-on: ${{ matrix.runner }}
+     # 16 hour timeout
+     timeout-minutes: 1080
+     steps:
+      - name: Free Disk Space
+        run: |
+          df -h
+          # brings available space from 25G to 32G
+          # otherwise we sometimes run out of space during the build
+          sudo rm -rf /usr/share/miniconda /usr/share/az* /usr/share/glade* /usr/local/share/chromium /usr/local/share/powershell /usr/share/dotnet /opt/ghc /opt/hostedtoolcache /usr/local/graalvm/ /usr/local/.ghcup/ /usr/local/lib/node_modules /usr/local/share/boost
+          sudo docker image prune --all --force
+          sudo docker builder prune -a
+          df -h
+      - name: Setup
+        id: config
+        run: |
+          # these variabes are used by build-docker and build-local
+          # to determine which Swift version to build for
+          echo "SWIFT_VERSION=${{ matrix.swift-version }}" >> $GITHUB_ENV
+          # pass the build-compiler matrix through to the build script
+          echo "BUILD_COMPILER=${{ matrix.build-compiler }}" >> $GITHUB_ENV
+          echo "TARGET_ARCHS=${{ matrix.arch }}" >> $GITHUB_ENV
+          echo "WORKDIR=${{ runner.temp }}/swift-android-sdk" >> $GITHUB_ENV
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Build Android SDK (Local)
+        if: ${{ matrix.build-type == 'local' }}
+        working-directory: swift-ci/sdks/android
+        run: |
+          sudo apt install -q patchelf build-essential cmake ninja-build python3 golang git gnupg2 libcurl4-openssl-dev libedit-dev libicu-dev libncurses5-dev libpython3-dev libsqlite3-dev libxml2-dev rsync uuid-dev uuid-runtime tzdata curl unzip
+          ./build-local ${SWIFT_VERSION} ${WORKDIR}
+      - name: Build Android SDK (Docker)
+        if: ${{ matrix.build-type == 'docker' }}
+        working-directory: swift-ci/sdks/android
+        run: |
+          ./build-docker ${SWIFT_VERSION} ${WORKDIR}
+      - name: Install Host Toolchain
+        if: ${{ matrix.build-type == 'docker' }}
+        working-directory: swift-ci/sdks/android
+        run: |
+          # when building in a Docker container, we don't have a local host toolchain,
+          # but we need one in order to run the SDK validation tests, so we install it now
+          HOST_OS=ubuntu$(lsb_release -sr)
+          source ./scripts/toolchain-vars.sh
+          mkdir -p ${WORKDIR}/host-toolchain
+          ./scripts/install-swift.sh ${WORKDIR}/host-toolchain/$SWIFT_BASE/usr
+          ls ${WORKDIR}/host-toolchain
+          ${WORKDIR}/host-toolchain/*/usr/bin/swift --version
+      - name: Get artifact info
+        id: info
+        shell: bash
+        run: |
+          set -ex
+          SWIFT_ROOT=$(dirname ${WORKDIR}/host-toolchain/*/usr)
+          echo "swift-root=${SWIFT_ROOT}" >> $GITHUB_OUTPUT
+          echo "swift-path=${SWIFT_ROOT}/usr/bin/swift" >> $GITHUB_OUTPUT
+
+          ARTIFACT_PATH=$(realpath ${WORKDIR}/products/*.artifactbundle.tar.gz)
+          echo "artifact-path=${ARTIFACT_PATH}" >> $GITHUB_OUTPUT
+          echo "sdk-id=x86_64-unknown-linux-android28" >> $GITHUB_OUTPUT
+
+          ARTIFACT_EXT=".artifactbundle.tar.gz"
+          ARTIFACT_NAME="$(basename ${ARTIFACT_PATH} ${ARTIFACT_EXT})"
+          # depending on whether we are building locally or in a container, add a maker to the name
+          if [[ "${{ matrix.build-type }}" == 'local' ]]; then
+            ARTIFACT_NAME="${ARTIFACT_NAME}-local"
+          fi
+          if [[ "${{ matrix.build-compiler }}" == '1' ]]; then
+            ARTIFACT_NAME="${ARTIFACT_NAME}-hostbuild"
+          fi
+          # artifacts need a unique name so we suffix with the matrix arch(s)
+          if [[ ! -z "${{ matrix.arch }}" ]]; then
+            ARTIFACT_NAME="${ARTIFACT_NAME}-$(echo ${{ matrix.arch }} | tr ',' '-')"
+          fi
+          ARTIFACT_NAME="${ARTIFACT_NAME}${ARTIFACT_EXT}"
+
+          # There is no way to prevent even a single-file artifact from being zipped:
+          # https://github.com/actions/upload-artifact?tab=readme-ov-file#zip-archives
+          # so the actual artifact download will look like:
+          # swift-6.1-RELEASE_android-0.1-x86_64.artifactbundle.tar.gz.zip
+          echo "artifact-name=${ARTIFACT_NAME}" >> $GITHUB_OUTPUT
+      - name: Upload SDK artifactbundle
+        uses: actions/upload-artifact@v4
+        with:
+          compression-level: 0
+          name: ${{ steps.info.outputs.artifact-name }}
+          path: ${{ steps.info.outputs.artifact-path }}
+      - name: Cleanup
+        run: |
+          # need to free up some space or else when installing we get: No space left on device
+          df -h
+          rm -rf ${WORKDIR}/{build,source}
+          sudo docker image prune --all --force
+          sudo docker builder prune -a
+          df -h
+      - name: Install artifactbundle
+        shell: bash
+        run: |
+          set -ex
+          ${{ steps.info.outputs.swift-path }} sdk install ${{ steps.info.outputs.artifact-path }}
+          ${{ steps.info.outputs.swift-path }} sdk configure --show-configuration $(${{ steps.info.outputs.swift-path }} sdk list | head -n 1) ${{ steps.info.outputs.sdk-id }}
+          # recent releases require that ANDROID_NDK_ROOT *not* be set
+          # see https://github.com/swiftlang/swift-driver/pull/1879
+          echo "ANDROID_NDK_ROOT=" >> $GITHUB_ENV
+
+      - name: Create Demo Project
+        run: |
+          cd ${{ runner.temp }}
+          mkdir DemoProject
+          cd DemoProject
+          ${{ steps.info.outputs.swift-path }} --version
+          ${{ steps.info.outputs.swift-path }} package init
+          echo 'import Foundation' >> Sources/DemoProject/DemoProject.swift
+          echo 'import FoundationEssentials' >> Sources/DemoProject/DemoProject.swift
+          echo 'import FoundationXML' >> Sources/DemoProject/DemoProject.swift
+          echo 'import FoundationNetworking' >> Sources/DemoProject/DemoProject.swift
+          echo 'import Dispatch' >> Sources/DemoProject/DemoProject.swift
+          echo 'import Android' >> Sources/DemoProject/DemoProject.swift
+      - name: Test Demo Project on Android
+        uses: skiptools/swift-android-action@main
+        with:
+          # only test for the complete arch SDK build to speed up CI
+          #run-tests: ${{ matrix.arch == '' }}
+          package-path: ${{ runner.temp }}/DemoProject
+          installed-sdk: ${{ steps.info.outputs.sdk-id }}
+          installed-swift: ${{ steps.info.outputs.swift-root }}
+
+      - name: Checkout swift-algorithms
+        uses: actions/checkout@v4
+        with:
+          repository: apple/swift-algorithms
+          path: swift-algorithms
+      - name: Test swift-algorithms
+        uses: skiptools/swift-android-action@main
+        with:
+          package-path: swift-algorithms
+          installed-sdk: ${{ steps.info.outputs.sdk-id }}
+          installed-swift: ${{ steps.info.outputs.swift-root }}
diff --git a/swift-ci/sdks/android/build-docker b/swift-ci/sdks/android/build-docker
@@ -17,8 +17,8 @@
 # default architectures to build for
 TARGET_ARCHS=${TARGET_ARCHS:-aarch64,x86_64,armv7}
 
-ANDROID_NDK_VERSION=android-ndk-r27d
-ANDROID_API=28
+ANDROID_NDK_VERSION=android-ndk-r28c
+ANDROID_API=24
 
 BASEPATH=$(dirname $(realpath $0))
 cd ${BASEPATH}

diff --git a/swift-ci/sdks/android/build-local b/swift-ci/sdks/android/build-local
@@ -17,8 +17,8 @@
 # default architectures to build for
 TARGET_ARCHS=${TARGET_ARCHS:-aarch64,x86_64,armv7}
 
-ANDROID_NDK_VERSION=android-ndk-r27d
-ANDROID_API=28
+ANDROID_NDK_VERSION=android-ndk-r28c
+ANDROID_API=24
 
 BASEPATH=$(dirname $(realpath $0))
 cd ${BASEPATH}

diff --git a/swift-ci/sdks/android/scripts/build.sh b/swift-ci/sdks/android/scripts/build.sh
@@ -244,7 +244,7 @@ libxml2_version=$(versionFromTag ${swift_source_dir}/libxml2)
 curl_desc=$(describe ${swift_source_dir}/curl | tr '_' '.')
 curl_version=${curl_desc#curl-}
 
-boringssl_version=$(describe ${source_dir}/boringssl)
+boringssl_version=$(describe ${swift_source_dir}/boringssl)
 
 function quiet_pushd {
     pushd "$1" >/dev/null 2>&1
@@ -351,6 +351,7 @@ for arch in $archs; do
             -DLIBXML2_WITH_ICU=NO \
             -DLIBXML2_WITH_ICONV=NO \
             -DLIBXML2_WITH_LZMA=NO \
+            -DLIBXML2_WITH_TESTS=OFF \
             -DBUILD_SHARED_LIBS=OFF \
             -DBUILD_STATIC_LIBS=ON
 
@@ -366,7 +367,7 @@ for arch in $archs; do
     groupend
 
     groupstart "Building boringssl for ${compiler_target_host}"
-    quiet_pushd ${source_dir}/boringssl
+    quiet_pushd ${swift_source_dir}/boringssl
         run cmake \
             -GNinja \
             -B ${build_dir}/$arch/boringssl \
@@ -484,7 +485,7 @@ for arch in $archs; do
             ${build_cmark} \
             ${local_build} \
             --host-test \
-            --skip-test-linux \
+            --skip-test-linux --skip-clean-libdispatch --skip-clean-foundation --skip-clean-xctest \
             --skip-test-xctest --skip-test-foundation \
             --build-swift-static-stdlib \
             --swift-install-components='compiler;clang-resource-dir-symlink;license;stdlib;sdk-overlay' \

diff --git a/swift-ci/sdks/android/scripts/fetch-source.sh b/swift-ci/sdks/android/scripts/fetch-source.sh
@@ -154,10 +154,14 @@ fi
 popd >/dev/null
 groupend
 
-# Fetch BoringSSL
-groupstart "Fetching BoringSSL"
-[[ -d boringssl ]] || git clone https://boringssl.googlesource.com/boringssl
-pushd boringssl >/dev/null 2>&1
-git checkout ${BORINGSSL_VERSION}
+groupstart "Fetching XML"
+pushd swift-project/libxml2 >/dev/null 2>&1
+git checkout v2.14.5
+popd >/dev/null 2>&1
+groupend
+
+groupstart "Fetching Curl"
+pushd swift-project/curl >/dev/null 2>&1
+git checkout curl-8_15_0
 popd >/dev/null 2>&1
 groupend