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docs: update Ubuntu dev env to reflect supported LTS versions

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- Replace "older version" collapsible with info block stating
  supported versions: Ubuntu 24.04 (primary) and 22.04
- Remove Gazebo Classic references (Ubuntu 22.04 section, install step)
- Note that GCC version comes from Ubuntu package manager
- Clarify that GCC version depends on Ubuntu release

Signed-off-by: Ramon Roche <mrpollo@gmail.com>
This commit is contained in:
Ramon Roche 2026-02-11 10:29:10 -08:00
parent df242827d2
commit 103a61450e
1 changed files with 9 additions and 16 deletions
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25
docs/en/dev_setup/dev_env_linux_ubuntu.md
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@ -4,20 +4,14 @@ The following instructions use a bash script to set up the PX4 development envir
The environment includes:
- [Gazebo Simulator](../sim_gazebo_gz/index.md) ("Harmonic")
- [Build toolchain for Pixhawk (and other NuttX-based hardware)](../dev_setup/building_px4.md#nuttx-pixhawk-based-boards).
On Ubuntu 22.04:
- [Gazebo Classic Simulator](../sim_gazebo_classic/index.md) can be used instead of Gazebo.
Gazebo is nearing feature-parity with Gazebo-Classic on PX4, and will soon replace it for all use cases.
- [Gazebo Simulator](../sim_gazebo_gz/index.md) (Gazebo Harmonic)
- [Build toolchain for Pixhawk (and other NuttX-based hardware)](../dev_setup/building_px4.md#nuttx-pixhawk-based-boards) using the `gcc-arm-none-eabi` compiler from the Ubuntu package manager.
The build toolchain for other flight controllers, simulators, and working with ROS are discussed in the [Other Targets](#other-targets) section below.
::: details Can I use an older version of Ubuntu?
PX4 supports the current and last Ubuntu LTS release where possible.
Older releases are not supported (so you can't raise defects against them), but may still work.
For example, Gazebo Classic setup is included in our standard build instructions for macOS, Ubuntu 18.04 and 20.04, and Windows on WSL2 for the same hosts.
:::info
PX4 targets the **current Ubuntu LTS** (24.04) for CI and release builds, with the **previous LTS** (22.04) also supported.
Older Ubuntu versions are not supported and may not work.
:::
## Simulation and NuttX (Pixhawk) Targets
@ -50,19 +44,18 @@ To install the toolchain:
- Acknowledge any prompts as the script progress.
- You can use the `--no-nuttx` and `--no-sim-tools` options to omit the NuttX and/or simulation tools.
3. If you need Gazebo Classic (Ubuntu 22.04 only) then you can manually remove Gazebo and install it by following the instructions in [Gazebo Classic > Installation](../sim_gazebo_classic/index.md#installation).
4. Restart the computer on completion.
3. Restart the computer on completion.
:::details Additional notes
These notes are provided "for information only":
- This setup is supported by the PX4 Dev Team.
The instructions may also work on other Debian Linux based systems.
- You can verify the NuttX installation by confirming the `gcc` version as shown:
- You can verify the NuttX installation by confirming `gcc` is available.
The version depends on your Ubuntu release (e.g. GCC 13.2.1 on Ubuntu 24.04):
```sh
$arm-none-eabi-gcc --version
$ arm-none-eabi-gcc --version
arm-none-eabi-gcc (15:13.2.rel1-2) 13.2.1 20231009
Copyright (C) 2023 Free Software Foundation, Inc.