compile-opus.mjs

import { execSync } from "child_process";
import { dir } from "console";
import fs, { existsSync, readFileSync, copyFileSync, mkdirSync } from "fs";
import path from "path";
import { PREFIX } from "./const.mjs";

const dirname = "opus-1.3.1";

export const enableOpus = (isWindows) => {
  if (!existsSync(dirname)) {
    execSync("tar xvf opus.gz", {
      stdio: "inherit",
    });
  }

  execSync(
    [
      path.posix.join(process.cwd().replace(/\\/g, "/"), dirname, "configure"),
      `--prefix=${path.join(process.cwd(), dirname, PREFIX)}`,
      "--enable-static",
      "--disable-shared",
      "--with-pic",
      "--enable-custom-modes",
      "--disable-extra-programs",
      isWindows ? "--host=x86_64-w64-mingw32" : null,
    ].join(" "),
    { cwd: dirname, stdio: "inherit" }
  );

  execSync("make", {
    cwd: dirname,
    stdio: "inherit",
  });

  execSync("make install", {
    cwd: dirname,
    stdio: "inherit",
  });

  const opus = readFileSync(
    dirname + "/remotion/lib/pkgconfig/opus.pc",
    "utf8"
  );
  console.log("pkgconfig/opus.pc is:", opus);
  const lines = opus.split("\n");
  const privLibs = lines.find((line) => line.startsWith("Libs.private"));
  if (!privLibs) {
    throw new Error("Could not find Libs.private in opus.pc");
  }
  const extraLibs = privLibs.replace("Libs.private: ", "");
  const linesPkg = lines
    .map((line) => {
      if (line.startsWith("prefix=")) {
        return "prefix=remotion";
      }

      if (line.startsWith("Libs:")) {
        // https://github.com/msys2/MINGW-packages/issues/5868#issuecomment-544107564
        return [line, "-lm", isWindows ? "-lssp" : null]
          .filter(Boolean)
          .join(" ");
      }
      if (line.startsWith("Libs.private")) {
        return null;
      }

      return line;
    })
    .filter((l) => l !== null)
    .join("\n");

  console.log("Replacing it with:", linesPkg);
  fs.writeFileSync(dirname + "/remotion/lib/pkgconfig/opus.pc", linesPkg);

  execSync(`cp -r ${PREFIX} ../`, { cwd: dirname, stdio: "inherit" });
};