Add build with musl libc (#2041)

.github/workflows/ci.yml

@@ -6,7 +6,7 @@ on:
     tags:
       - '*'
   pull_request:
-  
+
 jobs:
   test:
     strategy:
@@ -40,17 +40,35 @@ jobs:
       fail-fast: false
       matrix:
         os: [macOS-latest, ubuntu-latest]
+        libc: [default, musl]
+        exclude:
+          - os: macOS-latest
+            libc: musl
         include:
           - os: macOS-latest
-            url: https://github.com/graalvm/graalvm-ce-builds/releases/download/vm-20.0.0/graalvm-ce-java11-darwin-amd64-20.0.0.tar.gz
             artifact: scalafmt-macos
           - os: ubuntu-latest
-            url: https://github.com/graalvm/graalvm-ce-builds/releases/download/vm-20.0.0/graalvm-ce-java11-linux-amd64-20.0.0.tar.gz
-            artifact: scalafmt-linux
+            libc: default
+            artifact: scalafmt-linux-glibc
+            env:
+              - NATIVE_IMAGE_STATIC: true
+          - os: ubuntu-latest
+            libc: musl
+            artifact: scalafmt-linux-musl
+            env:
+              - NATIVE_IMAGE_STATIC: true
+              - NATIVE_IMAGE_MUSL: ${GITHUB_WORKSPACE}/bundle
     steps:
       - uses: actions/checkout@v2
-      - uses: olafurpg/setup-scala@v6
-      - run: jabba install [email protected]=tgz+${{ matrix.url }}
+      - uses: olafurpg/setup-scala@v7
+        with:
+          java-version: [email protected]
+      - if: matrix.libc == 'musl'
+        name: Install musl bundle
+        run: |
+          wget https://github.com/gradinac/musl-bundle-example/releases/download/v1.0/musl.tar.gz
+          tar xvf musl.tar.gz
+
       - run: bin/build-native-image.sh
         env:
           CI: true

bin/build-native-image.sh

@@ -1,8 +1,5 @@
 set -eux
 # NOTE(olafur): for some reason `jabba use ...` doesn't seem to work on GH Actions
-export JAVA_HOME=$(jabba which --home [email protected])
-export PATH=$JAVA_HOME/bin:$PATH
-echo $JAVA_HOME
 which gu
 gu install native-image
 sbt cli/graalvm-native-image:packageBin

build.sbt

@@ -182,24 +182,16 @@ lazy val cli = project
     scalacOptions ++= scalacJvmOptions.value,
     mainClass in GraalVMNativeImage := Some("org.scalafmt.cli.Cli"),
     graalVMNativeImageOptions ++= {
-      val reflectionFile =
-        Keys.sourceDirectory.in(Compile).value./("graal")./("reflection.json")
-      assert(reflectionFile.exists, "no such file: " + reflectionFile)
-      List(
-        "-H:+ReportUnsupportedElementsAtRuntime",
-        "-Dscalafmt.native-image=true",
-        "--initialize-at-build-time",
-        "--no-server",
-        "--enable-http",
-        "--enable-https",
-        "-H:EnableURLProtocols=http,https",
-        "--enable-all-security-services",
-        "--no-fallback",
-        s"-H:ReflectionConfigurationFiles=$reflectionFile",
-        "--allow-incomplete-classpath",
-        "-H:+ReportExceptionStackTraces"
-        //"--initialize-at-build-time=scala.Function1"
-      )
+      sys.env
+        .get("NATIVE_IMAGE_MUSL")
+        .map(path => s"-H:UseMuslC=$path")
+        .toSeq ++
+        sys.env
+          .get("NATIVE_IMAGE_STATIC")
+          .map(_.toBoolean)
+          .filter(identity)
+          .map(_ => "--static")
+          .toSeq
     }
   )
   .dependsOn(coreJVM, dynamic)

scalafmt-cli/src/main/resources/META-INF/native-image/org.scalafmt/scalafmt-cli/native-image.properties

@@ -0,0 +1,13 @@
+Args=--no-server \
+  -Dscalafmt.native-image=true \
+  --no-fallback \
+  --enable-http \
+  --enable-https \
+  --enable-all-security-services \
+  --install-exit-handlers \
+  --initialize-at-build-time \
+  --verbose \
+  -H:EnableURLProtocols=http,https \
+  -H:+TraceClassInitialization \
+  -H:+RemoveSaturatedTypeFlows \
+  -H:+ReportExceptionStackTraces