Split ohos to unit

Author: richerfu

.github/workflows/ci.yml

@@ -236,9 +236,6 @@ jobs:
           - target: s390x-unknown-linux-gnu
           - target: x86_64-unknown-linux-gnux32
           - target: x86_64-unknown-netbsd
-          - target: aarch64-unknown-linux-ohos
-          - target: armv7-unknown-linux-ohos
-          - target: x86_64-unknown-linux-ohos
 
     steps:
       - name: checkout
@@ -263,6 +260,41 @@ jobs:
       - name: before_cache_script
         run: rm -rf $CARGO_HOME/registry/index
 
+  openharmony:
+    runs-on: ubuntu-latest
+    needs: [rustfmt, minver, macos, linux_native_builds, rust_stable]
+    env: 
+      BUILD: check
+    strategy:
+      fail-fast: false
+      matrix:
+        include:
+          - target: aarch64-unknown-linux-ohos
+          - target: armv7-unknown-linux-ohos
+          - target: x86_64-unknown-linux-ohos
+
+    steps:
+      - name: checkout
+        uses: actions/checkout@v4
+
+      - name: setup Rust
+        uses: dtolnay/rust-toolchain@master
+        with: 
+          # OpenHarmony is supported with tier2 with 1.79.0 or newer.
+          toolchain: '1.79.0'
+          components: clippy
+
+      - name: install targets
+        run: rustup target add ${{ matrix.target }}
+
+      - name: build
+        uses: ./.github/actions/build
+        with:
+          TARGET: '${{ matrix.target }}'
+          BUILD: '${{ env.BUILD }}'
+
+      - name: before_cache_script
+        run: rm -rf $CARGO_HOME/registry/index
 
   redox:
     runs-on: ubuntu-latest