runcpu: support -fopenmp (dynamic linking)

src/spec/index.ts

@@ -64,6 +64,9 @@ export interface ConfigOptions {
     optimize: string[];
     ldflags: string[];
     libs: string[];
+    openmp: {
+        threads: number;
+    };
     compilerPaths: {
         CXX: string,
         CC: string,
@@ -83,6 +86,7 @@ export const renderConfig = (options: ConfigOptions): string => {
             .replace("@@CompilerFC@@", options.compilerPaths.FC)
             .replace("@@LIBS@@", options.libs.join(" "))
             .replace("@@SpecialFlags@@", options.specialFlags)
+            .replace("@@OpenMPThreads@@", options.openmp.threads.toString())
         ;
 };