---
name: "ldo65"
section: "1"
platform: "linux"
package: "xa"
version: "2.4.1-2"
release: "Arch Linux 2026-11-01"
platforms: ["linux"]
url: "https://new.carta.tech/ldo65"
---

# ldo65(1)

linker for o65 object files

## NAME

ldo65 - linker for o65 object files

## SYNOPSIS

**ldo65** \[*OPTION*\]... *FILE*...

## DESCRIPTION

**ldo65** is a linker for files in the o65 object format, formerly **ld65** but renamed to avoid conflicts with the **cc65** package (a separate product).

## OPTIONS

- **-b? addr**

  Relocate segment  **?** to  **addr**. **?** must be either t, d, b or z to indicate the text, data, bss or zero segment respectively. See the [**xa**(1)](/xa/1.md) man page for an explanation.

- **-o filename**

  Set output filename. The default is **a.o65**.

- **-L name**

  Allow label **name** to remain undefined, even after linking. This option may be specified multiple times for multiple labels.

- **-U**

  Allow any label to remain undefined, even after linking.

- **-G**

  Suppress writing of globals.

- **-g name**

  Only export global **name**. This option may be specified multiple times for multiple globals.

- **--help**

  Show summary of options.

- **--version**

  Show version of program.

## SEE ALSO

[**file65**(1)](/file65/1.md), [**reloc65**(1)](/reloc65/1.md), [**uncpk**(1)](/uncpk/1.md), **dxa**(1), [**xa**(1)](/xa/1.md)

## AUTHOR

This manual page was written by David Weinehall \<tao@acc.umu.se\> and Cameron Kaiser \<ckaiser@floodgap.com\>. Original xa package (C)1989-1997 Andre Fachat. Additional changes (C)1989-2024 Andre Fachat, Jolse Maginnis, David Weinehall and Cameron Kaiser. The current maintainer is Cameron Kaiser.

## WEBSITE

http://www.floodgap.com/retrotech/xa/