ci: support linux riscv64

.github/workflows/release.yml

@@ -42,27 +42,11 @@ jobs:
             exe: rathole
             cross: true
           - os: ubuntu-latest
-            target: mips-unknown-linux-gnu
+            target: riscv64gc-unknown-linux-gnu
             exe: rathole
             cross: true
           - os: ubuntu-latest
-            target: mips-unknown-linux-musl
-            exe: rathole
-            cross: true
-          - os: ubuntu-latest
-            target: mipsel-unknown-linux-gnu
-            exe: rathole
-            cross: true
-          - os: ubuntu-latest
-            target: mipsel-unknown-linux-musl
-            exe: rathole
-            cross: true
-          - os: ubuntu-latest
-            target: mips64-unknown-linux-gnuabi64
-            exe: rathole
-            cross: true
-          - os: ubuntu-latest
-            target: mips64el-unknown-linux-gnuabi64
+            target: riscv64gc-unknown-linux-musl
             exe: rathole
             cross: true
 
@@ -88,8 +72,11 @@ jobs:
           default: true
 
       - name: Install OpenSSL
-        if: matrix.os == 'ubuntu-latest'
+        if: matrix.os == 'ubuntu-latest' && !contains(matrix.target, 'musl')
         run: sudo apt-get install pkg-config libssl-dev
+      - name: Install Musl Tools
+        if: contains(matrix.target, 'musl')
+        run: sudo apt-get install musl-tools
       - name: Install OpenSSL
         if: matrix.os == 'macos-latest'
         run: brew install openssl@3
@@ -120,7 +107,7 @@ jobs:
         # Upx may not support some platforms. Ignore the errors
         continue-on-error: true
         # Disable upx for mips. See https://github.com/upx/upx/issues/387
-        if: matrix.os == 'ubuntu-latest' && !contains(matrix.target, 'mips')
+        if: matrix.os == 'ubuntu-latest' && !contains(matrix.target, 'mips') && !contains(matrix.target, 'riscv64')
         uses: crazy-max/ghaction-upx@v1
         with:
           version: v4.0.2