spec: allow using gcc for SPEC compiler

src/spec/index.ts

@@ -4,9 +4,9 @@ import { promisify } from "util";
 import { ChildProcessByStdio } from 'child_process';
 import { Readable, Writable } from 'stream';
 import { createInterface } from 'readline';
-import { projectRoot } from '../environment/index.js';
 import { SPECBenchData, benchpath, exepath, buildpath } from './benchData.js';
 import specTemplate from '../../assets/specTemplate.cfg';
+import assert from 'assert';
 
 
 
@@ -60,20 +60,64 @@ export function mkBench(spec: SPEC, bench: SPECBenchData): Bench {
 const writeFile = promisify(fs.writeFile);
 
 export interface ConfigOptions {
-    gccdir: string;
+    prefix: string;
     optimize: string[];
     ldflags: string[];
     sysroot: string;
+    compiler: "llvm" | "gcc";
 }
 
-export function renderConfig(options: ConfigOptions) {
-    return `# Rendered from TypeScript ${new Date().toLocaleString()}, do not edit!\n\n\n` + specTemplate
-        .replace("@@GCCDIR@@", options.gccdir)
-        .replace("@@OPTIMIZE@@", options.optimize.join(' '))
-        .replace("@@LDFLAGS@@", options.ldflags.join(' '))
-        .replace("@@SYSROOT@@", options.sysroot);
-}
+// Pure function to get compiler names based on the compiler type
+const getCompilerNames = (compiler: ConfigOptions["compiler"]) =>
+({
+    llvm: { CXX: "clang++", CC: "clang", FC: "flang" },
+    gcc: { CXX: "g++", CC: "gcc", FC: "gfortran" },
+}[compiler]);
 
+// Pure function to get compiler directory structure
+const getCompilerDir = (compiler: ConfigOptions["compiler"]) =>
+    compiler === "llvm" ? ["bin"] : ["usr", "bin"];
+
+// Helper function to resolve paths for compilers
+const resolveCompilerPaths = (
+    prefix: string,
+    compiler: ConfigOptions["compiler"],
+    compilerNames: ReturnType<typeof getCompilerNames>
+) => ({
+    CC: path.resolve(prefix, ...getCompilerDir(compiler), compilerNames.CC),
+    CXX: path.resolve(prefix, ...getCompilerDir(compiler), compilerNames.CXX),
+    FC: path.resolve(prefix, ...getCompilerDir(compiler), compilerNames.FC),
+});
+
+// Helper function to generate library paths for LLVM
+const getLlvmLibs = (prefix: string) =>
+    [
+        "pgmath",
+        "flangrti",
+        "flang",
+    ].map(lib => path.resolve(prefix, "lib", `lib${lib}.a`)).concat(["-lompstub"]);
+
+// Pure function to render configuration
+export const renderConfig = (options: ConfigOptions): string => {
+    const compilerNames = getCompilerNames(options.compiler);
+    const compilerPaths = resolveCompilerPaths(options.prefix, options.compiler, compilerNames);
+
+    const libs =
+        options.compiler === "llvm"
+            ? getLlvmLibs(options.prefix)
+            : [];
+
+    return `# Rendered from TypeScript ${new Date().toLocaleString()}, do not edit!\n\n\n` +
+        specTemplate
+            .replace("@@OPTIMIZE@@", options.optimize.join(" "))
+            .replace("@@LDFLAGS@@", options.ldflags.join(" "))
+            .replace("@@SYSROOT@@", options.sysroot)
+            .replace("@@CompilerCC@@", compilerPaths.CC)
+            .replace("@@CompilerCXX@@", compilerPaths.CXX)
+            .replace("@@CompilerFC@@", compilerPaths.FC)
+            .replace("@@LIBS@@", libs.join(" "))
+        ;
+};
 
 export interface SPECResult {
     outputFiles: { [key: string]: string[], };