//go:build (darwin || linux) && !gccgo package plugin import (	"fmt"	"os"	"path/filepath"	"plugin"	"strings") func init() {	dir := os.Getenv("RCLONE_PLUGIN_PATH")	if dir == "" {		return	}	// Get file names of plugin dir	listing, err := os.ReadDir(dir)	if err != nil {		fmt.Fprintln(os.Stderr, "Failed to open plugin directory:", err)	}	// Enumerate file names, load valid plugins	for _, file := range listing {		// Match name		fileName := file.Name()		if !strings.HasPrefix(fileName, "librcloneplugin_") {			continue		}		if !strings.HasSuffix(fileName, ".so") {			continue		}		// Try to load plugin		_, err := plugin.Open(filepath.Join(dir, fileName))		if err != nil {			fmt.Fprintf(os.Stderr, "Failed to load plugin %s: %s\n",				fileName, err)		}	}}