gdb missing since esp-12.2.0_20230208

[svenstaro]

Since esp-12.2.0_20230208, gdb is no longer part of the official release. You can read about this change from upstream in their esp-2022r1 release notes.

gdb now lives here so it needs to be separately downloaded and extracted on top of the current gcc toolchain location.

[SergioGasquez]

Hi! I brought this topic into today's community meeting and we've decided that espup should not install GDB, as we discussed in #154, we want to keep espup as minimal as possible, that means, installing only what's necessary to generate a binary for ESP32s.

Still, I think GDB is useful/necessary, so I will open an issue on the book to document how to install it.

[svenstaro]

I'm a bit unhappy about this as espup is meant to be a replacement for the otherwise annoying ad-hoc install scripts everybody would otherwise write for themselves. This decision has us make a small script that gets the newest version of esp gdb from just the right place and pops it into place in addition to running espup. This functionality used to be there and now it's gone without real replacement which isn't great.

I think it would make sense to at least add an option to optionally install it. Maybe just espup install --gdb?

[SergioGasquez]

Let's proceed the discussion here instead that Matrix (@svenstaro @ivmarkov), as a recap:

• It's important to note that esp-idf-sys is able to download/install the proper GCC that corresponds with the ESP-IDF version being used, and it could download GDB
  • no_std projects dont use GDB
  • We would need to see how it can be integrated with openocd
    • OpenOCD can also be downloaded from esp-idf-sys
• espup never intentionally installed GDB, it was a side effect

So, in summary atm we can install GDB:

1. Source from esp-idf installation
2. Download from releases: https://github.com/espressif/binutils-gdb/releases
3. (STD only) use the tools which esp-idf-sys downloads

[svenstaro]

I think that would work for me.

[SergioGasquez]

Hello, we wont be including GDB in espup, we will be doing some efforts to improve the current support in probe-rs (see esp-rs/rust#181 (comment)) and also, we will better document (probably in the book) how to install GDB/openOCD.