spec: link ompstub if the optimization profile is not "openmp"

src/spec/index.ts

@@ -333,6 +333,12 @@ export async function runSPEC({
         return "";
     }
 
+    let libs = compilerSuite === "llvm" ? cflangLibs(prefix) : [];
+
+    if (optimizeProfile !== "openmp") {
+        libs.push("-lompstub");
+    }
+
     // Spawn SPEC process with configuration
     const specProc = await spawnSPECWithID(
         specInstance,
@@ -360,7 +366,7 @@ export async function runSPEC({
                 ),
             ],
             compilerPaths: toolchain(compilerPrefix, compilerSuite as ToolchainSuite),
-            libs: compilerSuite === "llvm" ? cflangLibs(prefix) : [],
+            libs,
             specialFlags: getSpecialFlags(),
             openmp: {
                 threads: optimizeProfile === "openmp" ? 64 : 1,