}
			ctxt.PackageFile[before] = after
		case "packageshlib":
			if before == "" || after == "" {
				log.Fatalf(`%s:%d: invalid packageshlib: syntax is "packageshlib path=filename"`, file, lineNum)
			}
			ctxt.PackageShlib[before] = after
		case "modinfo":
			s, err := strconv.Unquote(args)
			if err != nil {

	-f
		Ignore version mismatch in the linked archives.
	-g
		Disable Go package data checks.
	-importcfg file
		Read import configuration from file.
		In the file, set packagefile, packageshlib to specify import resolution.
	-installsuffix suffix
		Look for packages in $GOROOT/pkg/$GOOS_$GOARCH_suffix
		instead of $GOROOT/pkg/$GOOS_$GOARCH.
	-k symbol

	Libdir       []string
	Library      []*sym.Library
	LibraryByPkg map[string]*sym.Library
	Shlibs       []Shlib
	Textp        []loader.Sym
	Moduledata   loader.Sym

	PackageFile  map[string]string
	PackageShlib map[string]string

	tramps []loader.Sym // trampolines

	compUnits []*sym.CompilationUnit // DWARF compilation units
	runtimeCU *sym.CompilationUnit   // One of the runtime CUs, the last one seen.

				return err
			}
			if err := sh.Mkdir(filepath.Dir(afterA)); err != nil {
				return err
			}
			if err := sh.Symlink(afterA, beforeA); err != nil {
				return err
			}
		case "packageshlib":
			return fmt.Errorf("gccgo -importcfg does not support shared libraries")
		}
	}
	return nil
}

func (tools gccgoToolchain) asm(b *Builder, a *Action, sfiles []string) ([]string, error) {

			// we must also put the full action ID into the binary's action ID hash.
			if p1.Name == "main" {
				fmt.Fprintf(h, "packagemain %s\n", a1.buildID)
			}
			if p1.Shlib != "" {
				fmt.Fprintf(h, "packageshlib %s=%s\n", p1.ImportPath, contentID(b.buildID(p1.Shlib)))
			}
		}
	}

	return h.Sum()
}

// printLinkerConfig prints the linker config into the hash h,

}

func errorexit() {
	exitIfErrors()
	Exit(0)
}

func loadinternal(ctxt *Link, name string) *sym.Library {
	zerofp := goobj.FingerprintType{}
	if ctxt.linkShared && ctxt.PackageShlib != nil {
		if shlib := ctxt.PackageShlib[name]; shlib != "" {
			return addlibpath(ctxt, "internal", "internal", "", name, shlib, zerofp)
		}
	}
	if ctxt.PackageFile != nil {
		if pname := ctxt.PackageFile[name]; pname != "" {