fyne-cross: fyne-cross option -ldflags does not work properly like it does in go build

Describe the bug:

Unlike go build fyne-cross option ldflags does nothing when I try to set global var with ldflags "-X 'main.ver=1.0.0'"

To Reproduce:

For the code beneath - steps to reproduce the behavior:

1. Run the command fyne-cross linux -ldflags "-X 'main.version=0.0.1'"

2. Run executable was built

3. See no version is displayed

4. Run the same code with the command go run -ldflags "-X 'main.version=0.0.1'" .

5. See version is displayed

Example code:

package main

import (
	"fyne.io/fyne/v2"
	"fyne.io/fyne/v2/app"
	"fyne.io/fyne/v2/widget"
)

var version string

func main() {
	a := app.New()
	w := a.NewWindow("Hello World")
	w.Resize(fyne.NewSize(200, 100))

	w.SetContent(widget.NewLabel("Version: " + version))
	w.ShowAndRun()
}

Device and debug info (please complete the following information):

Device info

• OS: Linux
• Version: Ubuntu 22.04.2 LTS
• Go version: go1.20.3 linux/arm64
• fyne-cross version: v1.4.0
• Fyne version: not installed