fix: fix the llvm 15 link for linux + test the installation

src/llvm/__tests__/llvm.test.ts

@@ -122,6 +122,25 @@ describe("setup-llvm", () => {
     await testBin("clang-format", ["--version"], binDir)
   })
 
+  it("should setup LLVM 15.0.2", async () => {
+    await cleanupTmpDir("llvm")
+
+    const { binDir } = await setupLLVM("15.0.2", directory, process.arch)
+    await testBin("clang++", ["--version"], binDir)
+
+    expect(process.env.CC?.includes("clang")).toBeTruthy()
+    expect(process.env.CXX?.includes("clang++")).toBeTruthy()
+
+    // test compilation
+    const file = path.join(__dirname, "main.cpp")
+    const main_exe = path.join(__dirname, addExeExt("main"))
+    execa.sync("clang++", [file, "-o", main_exe], { cwd: __dirname })
+    if (process.platform !== "win32") {
+      chmodSync(main_exe, "755")
+    }
+    execa.sync(main_exe, { cwd: __dirname, stdio: "inherit" })
+  })
+
   afterAll(async () => {
     await cleanupTmpDir("llvm")
   }, 100000)

src/llvm/llvm.ts

@@ -214,8 +214,8 @@ export function getLinuxUrl(versionGiven: string): string {
   let suffix: string
   if (version === "5.0.0") {
     suffix = `-linux-x86_64${linuxVersion}.tar.xz`
-  } else if (version === "15.0.2") {
-    suffix = `x86_64-unknown-linux-gnu${linuxVersion}.tar.xz`
+  } else if (linuxVersion.includes("-rhel86")) {
+    suffix = `-x86_64-unknown-linux-gnu${linuxVersion}.tar.xz`
   } else {
     suffix = `-x86_64-linux-gnu${linuxVersion}.tar.xz`
   }

src/utils/setup/version.ts

@@ -47,20 +47,31 @@ export async function getSpecificVersionAndUrl(
     }
   }
 
+  // if the given set doesn't include the version, throw an error
   if (!versions.has(version)) {
     throw new Error(`Unsupported target! (platform='${platform}', version='${version}')`)
   }
 
+  const offlineUrls: string[] = []
+
   for (const specificVersion of getSpecificVersions(versions, version)) {
     // eslint-disable-next-line no-await-in-loop
     const url = await getUrl(platform, specificVersion)
     // eslint-disable-next-line no-await-in-loop
-    if (url !== null && (await isUrlOnline(url))) {
-      return [specificVersion, url]
+    if (url !== null) {
+      if (await isUrlOnline(url)) {
+        return [specificVersion, url]
+      } else {
+        offlineUrls.push(url)
+      }
     }
   }
 
-  throw new Error(`Unsupported target! (platform='${platform}', version='${version}')`)
+  throw new Error(
+    `Unsupported target! (platform='${platform}', version='${version}'). The offline urls tested:\n${offlineUrls.join(
+      "\n"
+    )}`
+  )
 }
 
 export const defaultVersionRegex = /v?(\d\S*)/