add options to debug plugin load failures

argv.go

@@ -14,6 +14,7 @@ type ArgsGui struct {
 	NoGui      bool   `arg:"--no-gui"         help:"ignore all these gui problems"`
 	GuiPlugin  string `arg:"--gui"            help:"Use this gui toolkit [andlabs,gocui,nocui,stdin]"`
 	GuiFile    string `arg:"--gui-file"       help:"Use a specific plugin.so file"`
+	GuiTest    string `arg:"--gui-test"       help:"test a specific plugin.so will load"`
 	GuiVerbose bool   `arg:"--gui-verbose"    help:"enable all logging"`
 }
 

init.go

@@ -281,6 +281,9 @@ func New() *Node {
 			// trapStdout()
 		}
 	*/
+	if argGui.GuiTest != "" {
+		testPlugin()
+	}
 
 	initNew()
 	return me.rootNode

plugin.go

@@ -149,6 +149,15 @@ func searchPaths(name string) *aplug {
 	var pfile []byte
 	var err error
 
+	// try the filename from the command line first
+	if argGui.GuiFile != "" {
+		p := initToolkit(name, argGui.GuiFile)
+		if p != nil {
+			log.Log(NOW, "gui.Init() loaded ok!", argGui.GuiFile)
+			return p
+		}
+	}
+
 	// first try to load the embedded plugin file
 	// always try this first as it should have been
 	// tested by whomever compiled your binary
@@ -219,6 +228,17 @@ func searchPaths(name string) *aplug {
 	return nil
 }
 
+// tests the plugin file will load
+func testPlugin() {
+	_, err := plugin.Open(argGui.GuiTest)
+	if err != nil {
+		log.Log(PLUG, "plugin.Open() FAILED =", argGui.GuiTest, err)
+		os.Exit(-1)
+	}
+	log.Log(PLUG, "plugin.Open() SUCCESS loading plugin =", argGui.GuiTest)
+	os.Exit(0)
+}
+
 // load module
 // 1. open the shared object file to load the symbols
 func initToolkit(name string, filename string) *aplug {