Add musl target builds for glibc-independent binary distribution

.github/workflows/release.yml

@@ -12,20 +12,34 @@ env:
 jobs:
   build:
     strategy:
+      fail-fast: false
       matrix:
         include:
           - target: x86_64-unknown-linux-gnu
             runner: ubuntu-latest
             artifact_name: electrs
             platform: x86_64-linux-gnu
+            use_cross: false
           - target: aarch64-unknown-linux-gnu
             runner: ubuntu-24.04-arm
             artifact_name: electrs
             platform: aarch64-linux-gnu
+            use_cross: false
           - target: aarch64-apple-darwin
             runner: macos-14
             artifact_name: electrs
             platform: aarch64-apple-darwin
+            use_cross: false
+          - target: x86_64-unknown-linux-musl
+            runner: ubuntu-latest
+            artifact_name: electrs
+            platform: x86_64-linux-musl
+            use_cross: true
+          - target: aarch64-unknown-linux-musl
+            runner: ubuntu-latest
+            artifact_name: electrs
+            platform: aarch64-linux-musl
+            use_cross: true
     runs-on: ${{ matrix.runner }}
 
     steps:
@@ -50,44 +64,62 @@ jobs:
             target/
           key: ${{ runner.os }}-${{ matrix.target }}-cargo-${{ hashFiles('**/Cargo.lock') }}
 
-      - name: Build
+      - name: Install cross
+        if: matrix.use_cross
+        run: cargo install cross --git https://github.com/cross-rs/cross --tag v0.2.5
+
+      - name: Build (cross)
+        if: matrix.use_cross
+        run: cross build --release --locked --target ${{ matrix.target }}
+
+      - name: Build (cargo)
+        if: ${{ !matrix.use_cross }}
         run: cargo build --release --locked
 
-      - name: Strip binary
-        run: strip target/release/${{ matrix.artifact_name }}
+      - name: Set binary path
+        id: binary
+        run: |
+          if [ "${{ matrix.use_cross }}" = "true" ]; then
+            echo "path=target/${{ matrix.target }}/release/${{ matrix.artifact_name }}" >> $GITHUB_OUTPUT
+            echo "dir=target/${{ matrix.target }}/release" >> $GITHUB_OUTPUT
+          else
+            echo "path=target/release/${{ matrix.artifact_name }}" >> $GITHUB_OUTPUT
+            echo "dir=target/release" >> $GITHUB_OUTPUT
+          fi
 
       - name: Create tarball
         env:
           ASSET_NAME: electrs-${{ steps.version.outputs.tag }}-${{ matrix.platform }}
         run: |
-          cd target/release
+          cd ${{ steps.binary.outputs.dir }}
           tar czvf ${ASSET_NAME}.tar.gz ${{ matrix.artifact_name }}
 
       - name: Compute SHA256 (Linux)
         if: runner.os == 'Linux'
         env:
           ASSET_NAME: electrs-${{ steps.version.outputs.tag }}-${{ matrix.platform }}
         run: |
-          cd target/release
+          cd ${{ steps.binary.outputs.dir }}
           sha256sum ${ASSET_NAME}.tar.gz > ${ASSET_NAME}.tar.gz.sha256
 
       - name: Compute SHA256 (macOS)
         if: runner.os == 'macOS'
         env:
           ASSET_NAME: electrs-${{ steps.version.outputs.tag }}-${{ matrix.platform }}
         run: |
-          cd target/release
+          cd ${{ steps.binary.outputs.dir }}
           shasum -a 256 ${ASSET_NAME}.tar.gz > ${ASSET_NAME}.tar.gz.sha256
 
       - name: Upload artifact
         uses: actions/upload-artifact@v4
         with:
           name: electrs-${{ steps.version.outputs.tag }}-${{ matrix.platform }}
           path: |
-            target/release/electrs-${{ steps.version.outputs.tag }}-${{ matrix.platform }}.tar.gz
-            target/release/electrs-${{ steps.version.outputs.tag }}-${{ matrix.platform }}.tar.gz.sha256
+            ${{ steps.binary.outputs.dir }}/electrs-${{ steps.version.outputs.tag }}-${{ matrix.platform }}.tar.gz
+            ${{ steps.binary.outputs.dir }}/electrs-${{ steps.version.outputs.tag }}-${{ matrix.platform }}.tar.gz.sha256
 
   publish-crate:
+    if: startsWith(github.ref, 'refs/tags/')
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
@@ -102,6 +134,7 @@ jobs:
         run: cargo publish
 
   release:
+    if: startsWith(github.ref, 'refs/tags/')
     needs: build
     runs-on: ubuntu-latest
     permissions:
@@ -122,4 +155,4 @@ jobs:
           generate_release_notes: true
           files: |
             artifacts/**/*.tar.gz
-            artifacts/**/*.sha256
+            artifacts/**/*.sha256

.gitignore

@@ -4,3 +4,4 @@ target
 *.sublime*
 *~
 *.pyc
+.claude/

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "esplora-tapyrus"
-version = "0.5.7"
+version = "0.5.8"
 authors = ["Chaintope Inc.", "Roman Zeyde (original author) <me@romanzey.de>"]
 description = "An efficient re-implementation of Electrum Server in Rust"
 license = "MIT"
@@ -52,7 +52,12 @@ tokio = { version = "1", features = ["sync", "macros"] }
 version = "^0.5.0"
 features = ["use-serde"]
 
+[dependencies.gmp-mpfr-sys]
+version = "~1.6"
+features = ["force-cross"]
+
 [profile.release]
 lto = true
 panic = 'abort'
 codegen-units = 1
+strip = true

Cross.toml

@@ -0,0 +1,11 @@
+[target.x86_64-unknown-linux-musl]
+image = "ghcr.io/cross-rs/x86_64-unknown-linux-musl:0.2.5"
+
+[target.aarch64-unknown-linux-musl]
+image = "ghcr.io/cross-rs/aarch64-unknown-linux-musl:0.2.5"
+pre-build = [
+  # GMP's configure looks for tools named "aarch64-unknown-linux-musl-*"
+  # but cross-rs provides them as "aarch64-linux-musl-*".
+  # Create symlinks to bridge the naming mismatch.
+  "sh -c 'for tool in /usr/local/bin/aarch64-linux-musl-*; do ln -sf \"$tool\" \"/usr/local/bin/aarch64-unknown-linux-musl-$(basename $tool | sed s/aarch64-linux-musl-//)\"; done'",
+]