Linkage error with Native (non PIO build) for ESP32C3 about embuild HOT 9 OPEN

I am trying to get the esp edf template to build on mac m1 pro but I keep getting errors. Firstly it was due to the nightly toolchain not being used (Wasn't documented how I could change it so didn't know).

It is documented now. Hope that helps. With that said, this is pretty basic.

Eventually after reinstalling rust, ldproxy, cargo-generate, espup and installing espup and exporting it. I stumble upon another issue which really sounds alot like the one stated above. a gist with the error I get. Not sure if this is related to this issue but if not let me know what I can do to get this issue solved.

Most likely it is related, and my hypothesis would be that you are simply missing this flag or the whole .cargo/config.toml file from your project.

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Are you saying that the just-generated project fails for you with the same error?

from embuild.

I might have figured part of this out, at least the difference between pio & espressif tools chains for RISCV.

Espressif:

.embuild/espressif/tools/riscv32-esp-elf/esp-2021r2-8.4.0/riscv32-esp-elf/bin/riscv32-esp-elf-gcc -dumpspecs | grep "\-lnosys"
-lc -lnosys -lc

PIO:

.embuild/platformio/packages/toolchain-riscv32-esp/bin/riscv32-esp-elf-gcc -dumpspecs | grep "\-lnosys"

However Xtensa is the same:

Espressif:

.embuild/espressif/tools/xtensa-esp32-elf/esp-2021r1-8.4.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc -dumpspecs | grep "\-lnosys"
-lc -lnosys -lc

PIO:

.embuild/platformio/packages/toolchain-xtensa-esp32/bin/xtensa-esp32-elf-gcc -dumpspecs | grep "\-lnosys"
-lc -lnosys -lc

Seems PIO guys have ran into this issue to and dropped that -lnosys flag from their toolchain spec?

Still no idea why this works for Xtensa though, perhaps the intrinsic calls just aren't being generated?

from embuild.

Using

[target.riscv32imc-esp-espidf]
linker = "ldproxy"
rustflags = ["-C", "default-linker-libraries"]

worked for me. Thanks for this hint.
I've encountered this problem using mqtt_protocol="0.11"

from embuild.

I am trying to get the esp edf template to build on mac m1 pro but I keep getting errors. Firstly it was due to the nightly toolchain not being used (Wasn't documented how I could change it so didn't know). Eventually after reinstalling rust, ldproxy, cargo-generate, espup and installing espup and exporting it. I stumble upon another issue which really sounds alot like the one stated above. a gist with the error I get. Not sure if this is related to this issue but if not let me know what I can do to get this issue solved.

from embuild.

@ivmarkov Thank you for updating the documentation and helping me out.

I just generated a project with the edf template, this template give an .cargo/config.toml file which currently look like this for me

This look fine at first sight for me because it's the same as stated above.

from embuild.

Yes, A just-generated project also fails. It looks like it is also a different error than before.

from embuild.

could be related to the changes in espup ? esp-rs/espup@7271dbc

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My issue stated above was caused due to rustflags being in my zshrc 😉. Thank you for the help and hopefully, I can soon help fix this issue for the long term.

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