Split features.ts up.

src/features/musl.ts

@@ -0,0 +1,52 @@
+import * as c from '../constants'
+import * as core from '@actions/core'
+import * as tc from '@actions/tool-cache'
+import {exec} from '../utils'
+import {join} from 'path'
+
+const MUSL_NAME = 'x86_64-linux-musl-native'
+const MUSL_VERSION = '10.2.1'
+
+export async function setUpNativeImageMusl(): Promise<void> {
+  if (!c.IS_LINUX) {
+    core.warning('musl is only supported on Linux')
+    return
+  }
+  let toolPath = tc.find(MUSL_NAME, MUSL_VERSION)
+  if (toolPath) {
+    core.info(`Found ${MUSL_NAME} ${MUSL_VERSION} in tool-cache @ ${toolPath}`)
+  } else {
+    core.startGroup(`Setting up musl for GraalVM Native Image...`)
+    const muslDownloadPath = await tc.downloadTool(
+      `https://github.com/graalvm/setup-graalvm/releases/download/x86_64-linux-musl-${MUSL_VERSION}/${MUSL_NAME}.tgz`
+    )
+    const muslExtractPath = await tc.extractTar(muslDownloadPath)
+    const muslPath = join(muslExtractPath, MUSL_NAME)
+
+    const zlibCommit = 'ec3df00224d4b396e2ac6586ab5d25f673caa4c2'
+    const zlibDownloadPath = await tc.downloadTool(
+      `https://github.com/madler/zlib/archive/${zlibCommit}.tar.gz`
+    )
+    const zlibExtractPath = await tc.extractTar(zlibDownloadPath)
+    const zlibPath = join(zlibExtractPath, `zlib-${zlibCommit}`)
+    const zlibBuildOptions = {
+      cwd: zlibPath,
+      env: {
+        ...process.env,
+        CC: join(muslPath, 'bin', 'gcc')
+      }
+    }
+    await exec(
+      './configure',
+      [`--prefix=${muslPath}`, '--static'],
+      zlibBuildOptions
+    )
+    await exec('make', [], zlibBuildOptions)
+    await exec('make', ['install'], {cwd: zlibPath})
+
+    core.info(`Adding ${MUSL_NAME} ${MUSL_VERSION} to tool-cache ...`)
+    toolPath = await tc.cacheDir(muslPath, MUSL_NAME, MUSL_VERSION)
+    core.endGroup()
+  }
+  core.addPath(join(toolPath, 'bin'))
+}