}
		}
	case "exe":
		pkgsFilter = pkgsMain
		ldBuildmode = "exe"
		// Set the pkgsFilter to oneMainPkg if the user passed a specific binary output
		// and is using buildmode=exe for a better error message.
		// See issue #20017.
		if cfg.BuildO != "" {
			pkgsFilter = oneMainPkg
		}
	case "pie":
		if cfg.BuildRace && !platform.DefaultPIE(cfg.Goos, cfg.Goarch, cfg.BuildRace) {

	return res
}

func pkgsNotMain(pkgs []*load.Package) (res []*load.Package) {
	for _, p := range pkgs {
		if p.Name != "main" {
			res = append(res, p)
		}
	}
	return res
}

func oneMainPkg(pkgs []*load.Package) []*load.Package {
	if len(pkgs) != 1 || pkgs[0].Name != "main" {
		base.Fatalf("-buildmode=%s requires exactly one main package", cfg.BuildBuildmode)
	}
	return pkgs
}