Update build.yml

Author: p-web-git

.github/workflows/build.yml

@@ -15,28 +15,33 @@ jobs:
         with:
           go-version: '1.22.x'
 
-      - name: Download Android NDK (r28c)
+      # Sets ANDROID_NDK_ROOT, adds toolchains to PATH
+      - name: Set up Android NDK (r28c)
+        uses: android-actions/setup-ndk@v3
+        with:
+          ndk-version: r28c
+
+      - name: Verify NDK toolchain
         run: |
-          # wget -q https://dl.google.com/android/repository/android-ndk-r28c-linux.zip
-          # unzip -q android-ndk-r28c-linux.zip
-          echo "ANDROID_NDK=$PWD/android-ndk-r28c" >> $GITHUB_ENV
+          echo "ANDROID_NDK_ROOT=$ANDROID_NDK_ROOT"
+          ls -l "$ANDROID_NDK_ROOT/toolchains/llvm/prebuilt/linux-x86_64/bin" | head
+          test -x "$ANDROID_NDK_ROOT/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android24-clang"
 
       - name: Build Kopia (Android/arm64, CGO, netcgo) via go install
         env:
-          ANDROID_NDK: ${{ env.ANDROID_NDK }}
+          ANDROID_NDK_ROOT: ${{ env.ANDROID_NDK_ROOT }}
         run: |
-          # Android/arm64 cross-compile with CGO and cgo DNS resolver
-          export CC="$ANDROID_NDK/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android24-clang"
-          export CXX="$ANDROID_NDK/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android24-clang++"
+          # Android/arm64 cross-compile with CGO + cgo DNS resolver
+          export CC="$ANDROID_NDK_ROOT/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android24-clang"
+          export CXX="$ANDROID_NDK_ROOT/toolchains/llvm/prebuilt/linux-x86_64/bin/aarch64-linux-android24-clang++"
           export GOOS=android
           export GOARCH=arm64
           export CGO_ENABLED=1
 
           # IMPORTANT: GOBIN must be unset for cross-installs
-          # go install will place the binary under: $(go env GOPATH)/bin/${GOOS}_${GOARCH}/kopia
           env -u GOBIN go install -tags netcgo github.com/kopia/[email protected]
 
-          # Collect the cross-compiled binary
+          # Collect the cross-compiled binary: $(go env GOPATH)/bin/${GOOS}_${GOARCH}/kopia
           TARGET_BIN_DIR="$(go env GOPATH)/bin/${GOOS}_${GOARCH}"
           ls -l "$TARGET_BIN_DIR"
           mkdir -p out