Introduce native-image-musl feature.

src/constants.ts

@@ -2,6 +2,7 @@ import * as otypes from '@octokit/types'
 import {homedir} from 'os'
 import {join} from 'path'
 
+export const IS_LINUX = process.platform === 'linux'
 export const IS_MACOS = process.platform === 'darwin'
 export const IS_WINDOWS = process.platform === 'win32'
 

src/features.ts

@@ -0,0 +1,47 @@
+import * as core from '@actions/core'
+import * as tc from '@actions/tool-cache'
+import {IS_LINUX} from './constants'
+import {exec} from '@actions/exec'
+import {homedir} from 'os'
+import {join} from 'path'
+import {mkdirP} from '@actions/io'
+
+export async function setUpNativeImageMusl(): Promise<void> {
+  if (!IS_LINUX) {
+    core.warning('musl is only supported on Linux')
+    return
+  }
+  core.startGroup(`Setting up musl for GraalVM Native Image...`)
+  const basePath = join(homedir(), '.musl_feature')
+  await mkdirP(basePath)
+
+  const muslName = 'x86_64-linux-musl-native'
+  const muslDownloadPath = await tc.downloadTool(
+    `http://more.musl.cc/10/x86_64-linux-musl/${muslName}.tgz`
+  )
+  await tc.extractTar(muslDownloadPath, basePath)
+  const muslPath = join(basePath, muslName)
+  core.addPath(join(muslPath, 'bin'))
+
+  const zlibVersion = '1.2.11'
+  const zlibDownloadPath = await tc.downloadTool(
+    `https://zlib.net/zlib-${zlibVersion}.tar.gz`
+  )
+  await tc.extractTar(zlibDownloadPath, basePath)
+  const zlibPath = join(basePath, `zlib-${zlibVersion}`)
+  const zlibBuildOptions = {
+    cwd: zlibPath,
+    env: {
+      ...process.env,
+      CC: join(muslPath, 'bin', 'gcc')
+    }
+  }
+  await exec(
+    './configure',
+    [`--prefix=${muslPath}`, '--static'],
+    zlibBuildOptions
+  )
+  await exec('make', [], zlibBuildOptions)
+  await exec('make', ['install'], {cwd: zlibPath})
+  core.endGroup()
+}

src/main.ts

@@ -6,21 +6,26 @@ import {mkdirP} from '@actions/io'
 import {setUpDependencies} from './dependencies'
 import {setUpGUComponents} from './gu'
 import {setUpMandrel} from './mandrel'
+import {setUpNativeImageMusl} from './features'
 import {setUpWindowsEnvironment} from './msvc'
 
 async function run(): Promise<void> {
   try {
-    const graalvmVersion: string = core.getInput('version', {required: true})
-    const javaVersion: string = core.getInput('java-version', {required: true})
+    const graalvmVersion = core.getInput('version', {required: true})
+    const javaVersion = core.getInput('java-version', {required: true})
     const componentsString: string = core.getInput('components')
     const components: string[] =
       componentsString.length > 0 ? componentsString.split(',') : []
     const setJavaHome = core.getInput('set-java-home') === 'true'
+    const enableNativeImageMusl = core.getInput('native-image-musl') === 'true'
 
     if (c.IS_WINDOWS) {
       setUpWindowsEnvironment()
     }
-    setUpDependencies(components)
+    await setUpDependencies(components)
+    if (enableNativeImageMusl) {
+      await setUpNativeImageMusl()
+    }
 
     await mkdirP(c.GRAALVM_BASE)