Control: block -1 by 868895 On Sun, Aug 06, 2023 at 10:12:30PM +0200, Piotr Ożarowski wrote: > I had to add stub_flasher_32.json file manually from upstream repo in > order to make my esphome (not yet in Debian, working on it) work with > ESP32 WROOM 32 board. > > Please include this file in the package. TIA
Not sure if that's entirely clear to you (apologies if it is): that file isn't "just" a JSON data file that has been accidentally omitted from the package. It's in fact a (JSON-wrapped) binary, compiled from C sources bundled with the esptool source (and built with gcc, and a libc and everything). So it's not a matter of including the file, but rather rebuilding it. A lot of work has happened in Debian and with upstream over the years to build these binaries from unmodified sources, which culminated with Debian shipping the stubs for the ESP8266, as well as for the ESP32 RISC-V variants (ESP32-C2, ESP32-C3, ESP32-C6, ESP32-H2). See the 4.5.1+dfsg-0.1 and 4.6.2+dfsg-0.1 changelog entries, Debian bug #948096, as well as upstream issues #458, #499 and PRs #500, #501, #856, #858. The reason that the same has not happened yet for the ESP32, ESP32-S2 and ESP32-S3 stubs is that we lack the toolchain for them in Debian (gcc, binutils & picolibc). picolibc seems to have gained ESP32 support upstream in 1.7.9, and Keith Packard is both upstream and the Debian maintainer for it, so I suppose it won't be too hard to persuade him. gcc and binutils are more complicated. #868895 provides some context, and Jonathan McDowell, who maintains gcc-xtensa-lx106 and binutils-xtensa-lx106, is aware of the need. I think there is more of a backstory there, but he has the details. Note that the ESP-IDF is thankfully *not* needed anymore (see upstream #458). As an alternative, we could probably ship these three stubs as built by upstream separately in non-free, but I wasn't motivated enough, and I was hoping we'd get the toolchain in Debian at some point. (I'm not even the maintainer for esptool. If you're interested, I'm sure Milan will appreciate the help!). Finally, note that the stub isn't always necessary. --no-stub should work for some, but not all, operations, sometimes at slower speeds. Hope this helps! Faidon
