s := l.LookupOrCreateSym(local, 0)
			su := l.MakeSymbolUpdater(s)
			su.SetType(sym.SHOSTOBJ)
			su.SetSize(0)
			hostObjSyms[s] = struct{}{}
			continue

		case "cgo_export_static", "cgo_export_dynamic":
			if len(f) < 2 || len(f) > 4 {
				break
			}
			local := f[1]
			remote := local
			if len(f) > 2 {
				remote = f[2]
			}
			// The compiler adds a fourth argument giving

	// the unmangled name?
	cgoExports := make(map[string][]*[]string)
	for i, prag := range typecheck.Target.CgoPragmas {
		switch prag[0] {
		case "cgo_export_static", "cgo_export_dynamic":
			symName := s.canonicalize(prag[1])
			pprag := &typecheck.Target.CgoPragmas[i]
			cgoExports[symName] = append(cgoExports[symName], pprag)
		}
	}

				p.error(syntax.Error{Pos: pos, Msg: fmt.Sprintf("invalid library name %q in cgo_import_dynamic directive", lib)})
			}
			p.pragcgo(pos, text)
			pragma.Flag |= pragmaFlag("go:cgo_import_dynamic")
			break
		}
		fallthrough
	case strings.HasPrefix(text, "go:cgo_"):
		// For security, we disallow //go:cgo_* directives other
		// than cgo_import_dynamic outside cgo-generated files.

func (sb *SymbolBuilder) External() bool         { return sb.l.AttrExternal(sb.symIdx) }
func (sb *SymbolBuilder) Extname() string        { return sb.l.SymExtname(sb.symIdx) }
func (sb *SymbolBuilder) CgoExportDynamic() bool { return sb.l.AttrCgoExportDynamic(sb.symIdx) }
func (sb *SymbolBuilder) Dynimplib() string      { return sb.l.SymDynimplib(sb.symIdx) }

	Examples:
	//go:cgo_import_dynamic puts
	//go:cgo_import_dynamic puts puts#GLIBC_2.2.5
	//go:cgo_import_dynamic puts puts#GLIBC_2.2.5 "libc.so.6"

	A side effect of the cgo_import_dynamic directive with a
	library is to make the final binary depend on that dynamic
	library. To get the dependency without importing any specific
	symbols, use _ for local and remote.

	Example: