Hi,

Thanks for this really nice repository! We're a French company using ESP32 for our products, and we are really looking forward to being able to use embedded Rust.

We saw both rust-esp32-example (this repo, CMake-based build) and https://github.com/ivmarkov/rust-esp32-std-hello (a nice "cargo-first" build from @ivmarkov which also allows to use the nice https://github.com/esp-rs/esp-idf-svc which gives access to nice Rust wrappers for most of ESP-IDF libraries).

For now, because our codebase is C/C++, we'd be happy to use this CMake-based build rather than the "cargo-first" build (as we want to incrementally modify modules of our code by replacing them with Rust code), but it seems we can't use esp-idf-svc with it out-of-the-box.

Would it be possible to update this code, or add an example of how to do a CMake-based build that also allows to use esp-idf-svc?

With stable or beta Rust toolchains, I get the following error when running cargo build --release:

error[E0463]: can't find crate for `std`
  |
  = note: the `riscv32i-unknown-none-elf` target may not be installed

error: aborting due to previous error

For more information about this error, try `rustc --explain E0463`.
error: could not compile `rustlib`

Default host: x86_64-apple-darwin
rustup home:  /Users/ivan/.rustup

installed toolchains
--------------------

stable-x86_64-apple-darwin (default)
beta-x86_64-apple-darwin
nightly-x86_64-apple-darwin

installed targets for active toolchain
--------------------------------------

riscv32i-unknown-none-elf
x86_64-apple-darwin

active toolchain
----------------

stable-x86_64-apple-darwin (default)
rustc 1.48.0 (7eac88abb 2020-11-16)

Switching to nightly channel, as indicated in quick start for Xtensa, and installing riscv32i-unknown-none-elf target, i get a different error:

   Compiling rustlib v0.1.0 (/Users/ivan/e/rust-esp32-example/rustlib)
error[E0432]: unresolved import `core::sync::atomic::AtomicUsize`
 --> /Users/ivan/.rustup/toolchains/nightly-x86_64-apple-darwin/lib/rustlib/src/rust/library/stdarch/crates/std_detect/src/detect/cache.rs:8:5
  |
8 | use core::sync::atomic::AtomicUsize;
  |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ no `AtomicUsize` in `sync::atomic`

error: aborting due to previous error

For more information about this error, try `rustc --explain E0432`.
error: could not compile `std_detect`

Default host: x86_64-apple-darwin
rustup home:  /Users/ivan/.rustup

installed toolchains
--------------------

stable-x86_64-apple-darwin
beta-x86_64-apple-darwin
nightly-x86_64-apple-darwin (default)

installed targets for active toolchain
--------------------------------------

riscv32i-unknown-none-elf
riscv32imc-unknown-none-elf
x86_64-apple-darwin

active toolchain
----------------

nightly-x86_64-apple-darwin (default)
rustc 1.54.0-nightly (16e18395c 2021-06-10)

The failure makes sense, since RV32I or RV32IMC don't support atomic instructions.

This looks like https://github.com/rust-lang/rust/issues/62269, except this time in std_detect crate. I guess this is something that needs to be reported in https://github.com/rust-lang/stdarch/blob/82106e84345ee25366cd8a49a228d69fde795047/crates/std_detect/src/detect/cache.rs#L8?

Just pulled the toolchain and example (using the instructions here: https://github.com/espressif/rust-esp32-example/blob/main/docs/rust-on-xtensa-installation-x86_64-unknown-linux-gnu.md). When I build for esp32, I get the following:

$ idf.py set-target esp32
[output elided...]
$ RUST_BACKTRACE=1 idf.py build
Executing action: all (aliases: build)
Running ninja in directory /home/brian/src/esp32-rust/rust-esp32-example/build
Executing "ninja all"...
[1/14] Performing build step for 'bootloader'
ninja: no work to do.
[2/12] Performing build step for 'rustlib_project'
FAILED: esp-idf/rustlib/stamp/rustlib_project-build esp-idf/rustlib/target/RustApi.h esp-idf/rustlib/target/xtensa-esp32-espidf/release/librustlib.a 
cd /home/brian/src/esp32-rust/rust-esp32-example/components/rustlib && /usr/bin/cmake -E env CARGO_BUILD_TARGET=xtensa-esp32-espidf CARGO_BUILD_TARGET_DIR=/home/brian/src/esp32-rust/rust-esp32-example/build/esp-idf/rustlib/target cargo build --release --features=std
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
   Compiling rustlib v0.1.0 (/home/brian/src/esp32-rust/rust-esp32-example/components/rustlib)
error: failed to run custom build command for `rustlib v0.1.0 (/home/brian/src/esp32-rust/rust-esp32-example/components/rustlib)`

Caused by:
  process didn't exit successfully: `/home/brian/src/esp32-rust/rust-esp32-example/build/esp-idf/rustlib/target/release/build/rustlib-435225cb26b45082/build-script-build` (exit status: 101)
  --- stdout
  cargo:rerun-if-changed=/home/brian/src/esp32-rust/rust-esp32-example/build/esp-idf/rustlib/target/RustApi.h

  --- stderr
  thread 'main' panicked at 'libclang error; possible causes include:
  - Invalid flag syntax
  - Unrecognized flags
  - Invalid flag arguments
  - File I/O errors
  - Host vs. target architecture mismatch
  If you encounter an error missing from this list, please file an issue or a PR!', /home/brian/.cargo/registry/src/github.com-1ecc6299db9ec823/bindgen-0.58.1/src/ir/context.rs:535:15
  stack backtrace:
     0: rust_begin_unwind
     1: core::panicking::panic_fmt
     2: core::option::expect_failed
     3: core::option::Option<T>::expect
               at /home/runner/work/idf-rust-build/idf-rust-build/library/core/src/option.rs:351:21
     4: bindgen::ir::context::BindgenContext::new
               at /home/brian/.cargo/registry/src/github.com-1ecc6299db9ec823/bindgen-0.58.1/src/ir/context.rs:529:13
     5: bindgen::Bindings::generate
               at /home/brian/.cargo/registry/src/github.com-1ecc6299db9ec823/bindgen-0.58.1/src/lib.rs:2272:27
     6: bindgen::Builder::generate
               at /home/brian/.cargo/registry/src/github.com-1ecc6299db9ec823/bindgen-0.58.1/src/lib.rs:1434:9
     7: build_script_build::run_bindgen
               at ./build.rs:50:20
     8: build_script_build::main
               at ./build.rs:12:5
     9: core::ops::function::FnOnce::call_once
               at /home/runner/work/idf-rust-build/idf-rust-build/library/core/src/ops/function.rs:227:5
  note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
ninja: build stopped: subcommand failed.
ninja failed with exit code 1

Some other things:

$ bindgen --version
bindgen 0.59.1
$ rustc --version
rustc 1.54.0-dev
$ rustc --print target-list | grep esp
riscv32imac-esp-espidf
riscv32imc-esp-espidf
xtensa-esp32-espidf
xtensa-esp32-none-elf
xtensa-esp32s2-espidf
xtensa-esp32s2-none-elf
xtensa-esp8266-none-elf
$ clang --version
clang version 11.0.0 (https://gitlab-ci-token:[email protected]:6688/idf/llvm-project.git 36dbc8b5ee7dae4a4c5bff73efff0ea7ccb3707e)
Target: x86_64-unknown-linux-gnu
Thread model: posix
InstalledDir: /opt/xtensa/xtensa-esp32-elf-clang/bin
$ clang -print-targets
  Registered Targets:
    x86    - 32-bit X86: Pentium-Pro and above
    x86-64 - 64-bit X86: EM64T and AMD64
    xtensa - Xtensa 32
$ xtensa-esp32-elf-gcc --version
xtensa-esp32-elf-gcc (crosstool-NG esp-2021r1) 8.4.0
Copyright (C) 2018 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

Also: is that your GitLab auth token in the clang version string? Might want to rotate those credentials if so...

Hi all,

I'm trying to compile ttf-parser to a static library for another ESP-IDF C/C++ project. It has a C binding and it should just work as long as I change the target type from cdylib to staticlib (am I right? or have I forgot something?). However it didn't work somehow when opt-level is not 0 or s. Here's what I have done:

1. I used the docker image, by docker pull espressif/idf-rust-examples then docker run -it espressif/idf-rust-examples
2. I cloned the ttf-parser project, by: git clone https://github.com/RazrFalcon/ttf-parser
3. Then I go to the c-api directory. I added a .cargo/config.toml, content listed below:

[build]
# Uncomment the relevant target for your chip here (ESP32, ESP32-S2 or ESP32-C3)
target = "xtensa-esp32-espidf"
#target = "xtensa-esp32s2-espidf"
#target = "riscv32imc-esp-espidf"

[target.xtensa-esp32-espidf]
linker = "ldproxy"

[target.xtensa-esp32s2-espidf]
linker = "ldproxy"

[target.riscv32imc-esp-espidf]
linker = "ldproxy"

[patch.crates-io]
# This patch is a temporary workaround necessary until Rust 1.55 is out
# You DON'T need it with stock nightly Rust 1.56 (but stock nightly only supports the ESP32-C3 chip)
libc = { git = "https://github.com/ivmarkov/libc.git" }

[unstable]
configurable-env = true # No longer necessary since 1.56, as it was stabilized: https://github.com/rust-lang/cargo/blob/master/src/cargo/core/features.rs#L698
extra-link-arg = true   # No longer necessary since 1.56, as it was stabilized: https://github.com/rust-lang/cargo/blob/master/src/cargo/core/features.rs#L695
build-std = ["std", "panic_abort"]
build-std-features = ["panic_immediate_abort"]
patch-in-config = true

4. I run cargo build --release --verbose. Then something goes wrong. Here are a few different variants:

• If I leave the lto = true and default release opt-level (should be 3?) in the Cargo.toml, rustc constantly uses 100% CPU and never finish compiling (at least still running after 3 minutes on a machine with Ryzen 3700X, 32GB RAM)
• If I comment lto = true out and default release opt-level (should be 3?) , rustc will not lock up. But instead it gives me this output:

warning: Patch `libc v0.2.101 (https://github.com/ivmarkov/libc.git#7e83ba0a)` was not used in the crate graph.
Check that the patched package version and available features are compatible
with the dependency requirements. If the patch has a different version from
what is locked in the Cargo.lock file, run `cargo update` to use the new
version. This may also occur with an optional dependency that is not enabled.
    Updating git repository `https://github.com/ivmarkov/libc.git`
warning: Patch `libc v0.2.101 (https://github.com/ivmarkov/libc.git#7e83ba0a)` was not used in the crate graph.
Check that the patched package version and available features are compatible
with the dependency requirements. If the patch has a different version from
what is locked in the Cargo.lock file, run `cargo update` to use the new
version. This may also occur with an optional dependency that is not enabled.
       Fresh core v0.0.0 (/opt/esp/lib/rustlib/src/rust/library/core)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
       Fresh cc v1.0.69
       Fresh rustc-std-workspace-core v1.99.0 (/opt/esp/lib/rustlib/src/rust/library/rustc-std-workspace-core)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
       Fresh compiler_builtins v0.1.49
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
       Fresh libc v0.2.98 (https://github.com/rust-lang/libc.git#67562637)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
       Fresh alloc v0.0.0 (/opt/esp/lib/rustlib/src/rust/library/alloc)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
       Fresh cfg-if v0.1.10
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
       Fresh rustc-demangle v0.1.20
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
       Fresh rustc-std-workspace-alloc v1.99.0 (/opt/esp/lib/rustlib/src/rust/library/rustc-std-workspace-alloc)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
       Fresh unwind v0.0.0 (/opt/esp/lib/rustlib/src/rust/library/unwind)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
       Fresh panic_abort v0.0.0 (/opt/esp/lib/rustlib/src/rust/library/panic_abort)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
       Fresh hashbrown v0.11.2
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
       Fresh std_detect v0.1.5 (/opt/esp/lib/rustlib/src/rust/library/stdarch/crates/std_detect)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
       Fresh panic_unwind v0.0.0 (/opt/esp/lib/rustlib/src/rust/library/panic_unwind)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
       Fresh std v0.0.0 (/opt/esp/lib/rustlib/src/rust/library/std)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
       Fresh proc_macro v0.0.0 (/opt/esp/lib/rustlib/src/rust/library/proc_macro)
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
   Compiling ttf-parser v0.12.3 (/opt/ttf-parser)
     Running `rustc --crate-name ttf_parser --edition=2018 /opt/ttf-parser/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C opt-level=3 -C embed-bitcode=no --cfg 'feature="std"' --cfg 'feature="variable-fonts"' -C metadata=b7db5016109f670c -C extra-filename=-b7db5016109f670c --out-dir /opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps --target xtensa-esp32-espidf -C linker=ldproxy -L dependency=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps -L dependency=/opt/ttf-parser/c-api/target/release/deps --extern 'noprelude:alloc=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/liballoc-2902dfbac9bdd6ca.rmeta' --extern 'noprelude:compiler_builtins=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libcompiler_builtins-5cb2d211fd6af220.rmeta' --extern 'noprelude:core=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libcore-3cff502e5da9da9c.rmeta' --extern 'noprelude:panic_abort=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libpanic_abort-0042c62788b76179.rmeta' --extern 'noprelude:panic_unwind=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libpanic_unwind-6ec9d840d190d1d7.rmeta' --extern 'noprelude:proc_macro=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libproc_macro-080b393debb41506.rmeta' --extern 'noprelude:std=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libstd-559d5acfa07b308c.rmeta' -Z unstable-options`
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
LLVM ERROR: fixup value out of range
error: could not compile `ttf-parser`

Caused by:
  process didn't exit successfully: `rustc --crate-name ttf_parser --edition=2018 /opt/ttf-parser/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C opt-level=3 -C embed-bitcode=no --cfg 'feature="std"' --cfg 'feature="variable-fonts"' -C metadata=b7db5016109f670c -C extra-filename=-b7db5016109f670c --out-dir /opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps --target xtensa-esp32-espidf -C linker=ldproxy -L dependency=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps -L dependency=/opt/ttf-parser/c-api/target/release/deps --extern 'noprelude:alloc=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/liballoc-2902dfbac9bdd6ca.rmeta' --extern 'noprelude:compiler_builtins=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libcompiler_builtins-5cb2d211fd6af220.rmeta' --extern 'noprelude:core=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libcore-3cff502e5da9da9c.rmeta' --extern 'noprelude:panic_abort=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libpanic_abort-0042c62788b76179.rmeta' --extern 'noprelude:panic_unwind=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libpanic_unwind-6ec9d840d190d1d7.rmeta' --extern 'noprelude:proc_macro=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libproc_macro-080b393debb41506.rmeta' --extern 'noprelude:std=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libstd-559d5acfa07b308c.rmeta' -Z unstable-options` (exit status: 101)

• If I set debug = true and opt-level = "z", it gives me:

   Compiling ttf-parser v0.12.3 (/opt/ttf-parser)
     Running `rustc --crate-name ttf_parser --edition=2018 /opt/ttf-parser/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C opt-level=z -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="std"' --cfg 'feature="variable-fonts"' -C metadata=47d4919b23a5bfb9 -C extra-filename=-47d4919b23a5bfb9 --out-dir /opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps --target xtensa-esp32-espidf -C linker=ldproxy -L dependency=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps -L dependency=/opt/ttf-parser/c-api/target/release/deps --extern 'noprelude:alloc=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/liballoc-6e011642604099cb.rmeta' --extern 'noprelude:compiler_builtins=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libcompiler_builtins-6ee7ed1b085d2764.rmeta' --extern 'noprelude:core=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libcore-41b494a1d5172bd1.rmeta' --extern 'noprelude:panic_abort=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libpanic_abort-09026d116c1a3ad5.rmeta' --extern 'noprelude:panic_unwind=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libpanic_unwind-f0b56e4ce10f80a5.rmeta' --extern 'noprelude:proc_macro=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libproc_macro-fd87d4d48a2fd788.rmeta' --extern 'noprelude:std=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libstd-259244ca692541bb.rmeta' -Z unstable-options`
'+memctl' is not a recognized feature for this target (ignoring feature)
'+memctl' is not a recognized feature for this target (ignoring feature)
LLVM ERROR: Error while trying to spill A14 from class AR: Cannot scavenge register without an emergency spill slot!
error: could not compile `ttf-parser`

Caused by:
  process didn't exit successfully: `rustc --crate-name ttf_parser --edition=2018 /opt/ttf-parser/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata,link -C opt-level=z -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="std"' --cfg 'feature="variable-fonts"' -C metadata=47d4919b23a5bfb9 -C extra-filename=-47d4919b23a5bfb9 --out-dir /opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps --target xtensa-esp32-espidf -C linker=ldproxy -L dependency=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps -L dependency=/opt/ttf-parser/c-api/target/release/deps --extern 'noprelude:alloc=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/liballoc-6e011642604099cb.rmeta' --extern 'noprelude:compiler_builtins=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libcompiler_builtins-6ee7ed1b085d2764.rmeta' --extern 'noprelude:core=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libcore-41b494a1d5172bd1.rmeta' --extern 'noprelude:panic_abort=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libpanic_abort-09026d116c1a3ad5.rmeta' --extern 'noprelude:panic_unwind=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libpanic_unwind-f0b56e4ce10f80a5.rmeta' --extern 'noprelude:proc_macro=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libproc_macro-fd87d4d48a2fd788.rmeta' --extern 'noprelude:std=/opt/ttf-parser/c-api/target/xtensa-esp32-espidf/release/deps/libstd-259244ca692541bb.rmeta' -Z unstable-options` (exit status: 101)

• If I set opt-level = 0 in the Cargo.toml, it can compile, but '+memctl' is not a recognized feature for this target (ignoring feature) warning still shows up
• If I set opt-level = "s", in the Cargo.toml, it can compile, but '+memctl' is not a recognized feature for this target (ignoring feature) warning still shows up
• If I set opt-level = "s" and lto = true in the Cargo.toml, it can compile, but '+memctl' is not a recognized feature for this target (ignoring feature) warning still shows up

I would like to know is this a compiler bug or I somehow misused something? Any suggestions? Thanks in advance!

Regards, Jackson

Related files : docs/rust-on-xtensa-installation-x86_64-unknown-linux-gnu.md Description :

zsh: command not found: pushd
zsh: command not found: popd

Suggest to change pushd and popd to cd somepath , cd ..

I'm trying to follow this guide for installing the precompiled Rust toolchain & LLVM clang on Windows.

The installation instructions fail on the following step: cp -Recurse .\rust-std-x86_64-pc-windows-msvc\lib\* ~\.rustup\toolchains\xtensa\lib\

... with this error message:

PS C:\Users\ivan\rust-1.50.0-dev-x86_64-pc-windows-msvc> cp -Recurse .\rust-std-x86_64-pc-windows-msvc\lib\* ~\.rustup\toolchains\xtensa\lib\
cp : An item with the specified name C:\Users\ivan\.rustup\toolchains\xtensa\lib\rustlib already exists.
At line:1 char:1
+ cp -Recurse .\rust-std-x86_64-pc-windows-msvc\lib\* ~\.rustup\toolcha ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : ResourceExists: (C:\Users\ivan\....nsa\lib\rustlib:String) [Copy-Item], IOException
    + FullyQualifiedErrorId : DirectoryExist,Microsoft.PowerShell.Commands.CopyItemCommand

cp : An item with the specified name C:\Users\ivan\.rustup\toolchains\xtensa\lib\rustlib\x86_64-pc-windows-msvc
already exists.
At line:1 char:1
+ cp -Recurse .\rust-std-x86_64-pc-windows-msvc\lib\* ~\.rustup\toolcha ...
+ ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : ResourceExists: (C:\Users\ivan\....pc-windows-msvc:String) [Copy-Item], IOException
    + FullyQualifiedErrorId : DirectoryExist,Microsoft.PowerShell.Commands.CopyItemCommand

Closes https://github.com/ivmarkov/rust-esp32-std-hello/pull/8

The idea behind this PR is to have two images:

• espressif/idf-rust - which contains Rust compiler and can be used in CI or base image for others
• espressif/idf-rust-examples - images based on idf-rust which contains additional tools and examples

Right now we have two examples:

• "idf.py-first" approach in /opt/rust-esp32-example
• "cargo-first" approach which dependes on cargo-pio in /opt/rust-esp32-std-hello - repo: https://github.com/ivmarkov/rust-esp32-std-hello.git

Just following the instruction does not work

latest: Pulling from espressif/idf-rust-examples
Digest: sha256:ae300eac447f51c6cffd0994e62635af7f5785d1f3b68d39123ba048f3ef81ef
Status: Image is up to date for espressif/idf-rust-examples:latest

    cd /opt/rust-esp32-std-hello
    cargo build --release
    espflash /dev/ttyUSB0 target/xtensa-esp32-espidf/release/rust-esp32-std-hello
    cargo pio espidf monitor -e release /dev/ttyUSB0

  --- stderr
  Error: Compatible PlatformIO Core not found.
  Reason: PlatformIO executable not found in `/root/.platformio/penv/bin`
  CMake Error at /root/.platformio/packages/framework-espidf/tools/cmake/scripts/data_file_embed_asm.cmake:26 (file):
    file failed to open for reading (No such file or directory):

      /opt/rust-esp32-std-hello/target/xtensa-esp32-espidf/release/build/esp-idf-sys-32173fcf1c714593/out/esp-idf/.pio/build/release/x509_crt_bundle


  *** Error 1
  *** [.pio/build/release/.pio/build/release/x509_crt_bundle.o] Source `.pio/build/release/x509_crt_bundle.S' not found, needed by target `.pio/build/release/.pio/build/release/x509_crt_bundle.o'.
  ========================= [FAILED] Took 69.47 seconds =========================
  Environment    Status    Duration
  -------------  --------  ------------
  release        FAILED    00:01:09.471
  ==================== 1 failed, 0 succeeded in 00:01:09.471 ====================
  Error: No such file or directory (os error 2)

I'm using this example as boilerplate for a PoC I'm conducting. I'm compiling with the docker image georgikrocks/esp-idf-rust:latest (2e95100a412d). When my Rust code calls rand::thread_rng(), compilation fails with

FAILED: streams-embedded-transport-example.elf 
: && /opt/xtensa-esp32-elf-clang/bin/xtensa-esp32-elf-g++ -mlongcalls -Wno-frame-address  CMakeFiles/streams-embedded-transport-example.elf.dir/project_elf_src_esp32.c.obj -o streams-embedded-transport-example.elf  esp-idf/esp_ringbuf/libesp_ringbuf.a  esp-idf/efuse/libefuse.a  esp-idf/esp_ipc/libesp_ipc.a  esp-idf/driver/libdriver.a  esp-idf/esp_pm/libesp_pm.a  esp-idf/mbedtls/libmbedtls.a  esp-idf/app_update/libapp_update.a  esp-idf/bootloader_support/libbootloader_support.a  esp-idf/spi_flash/libspi_flash.a  esp-idf/nvs_flash/libnvs_flash.a  esp-idf/pthread/libpthread.a  esp-idf/esp_gdbstub/libesp_gdbstub.a  esp-idf/espcoredump/libespcoredump.a  esp-idf/esp_phy/libesp_phy.a  esp-idf/esp_system/libesp_system.a  esp-idf/esp_rom/libesp_rom.a  esp-idf/hal/libhal.a  esp-idf/vfs/libvfs.a  esp-idf/esp_eth/libesp_eth.a  esp-idf/tcpip_adapter/libtcpip_adapter.a  esp-idf/esp_netif/libesp_netif.a  esp-idf/esp_event/libesp_event.a  esp-idf/wpa_supplicant/libwpa_supplicant.a  esp-idf/esp_wifi/libesp_wifi.a  esp-idf/lwip/liblwip.a  esp-idf/log/liblog.a  esp-idf/heap/libheap.a  esp-idf/soc/libsoc.a  esp-idf/esp_hw_support/libesp_hw_support.a  esp-idf/xtensa/libxtensa.a  esp-idf/esp_common/libesp_common.a  esp-idf/esp_timer/libesp_timer.a  esp-idf/freertos/libfreertos.a  esp-idf/newlib/libnewlib.a  esp-idf/cxx/libcxx.a  esp-idf/app_trace/libapp_trace.a  esp-idf/asio/libasio.a  esp-idf/cbor/libcbor.a  esp-idf/unity/libunity.a  esp-idf/cmock/libcmock.a  esp-idf/coap/libcoap.a  esp-idf/console/libconsole.a  esp-idf/nghttp/libnghttp.a  esp-idf/esp-tls/libesp-tls.a  esp-idf/esp_adc_cal/libesp_adc_cal.a  esp-idf/esp_hid/libesp_hid.a  esp-idf/tcp_transport/libtcp_transport.a  esp-idf/esp_http_client/libesp_http_client.a  esp-idf/esp_http_server/libesp_http_server.a  esp-idf/esp_https_ota/libesp_https_ota.a  esp-idf/esp_lcd/libesp_lcd.a  esp-idf/protobuf-c/libprotobuf-c.a  esp-idf/protocomm/libprotocomm.a  esp-idf/mdns/libmdns.a  esp-idf/esp_local_ctrl/libesp_local_ctrl.a  esp-idf/sdmmc/libsdmmc.a  esp-idf/esp_serial_slave_link/libesp_serial_slave_link.a  esp-idf/esp_websocket_client/libesp_websocket_client.a  esp-idf/expat/libexpat.a  esp-idf/wear_levelling/libwear_levelling.a  esp-idf/fatfs/libfatfs.a  esp-idf/freemodbus/libfreemodbus.a  esp-idf/jsmn/libjsmn.a  esp-idf/json/libjson.a  esp-idf/libsodium/liblibsodium.a  esp-idf/mqtt/libmqtt.a  esp-idf/openssl/libopenssl.a  esp-idf/perfmon/libperfmon.a  esp-idf/spiffs/libspiffs.a  esp-idf/ulp/libulp.a  esp-idf/wifi_provisioning/libwifi_provisioning.a  esp-idf/main/libmain.a  esp-idf/clib/libclib.a  esp-idf/rustlib/librustlib.a  -Wl,--cref -Wl,--Map=/opt/streams/build/streams-embedded-transport-example.map  -Wl,--gc-sections  -fno-rtti  -fno-lto  esp-idf/asio/libasio.a  esp-idf/cbor/libcbor.a  esp-idf/cmock/libcmock.a  esp-idf/unity/libunity.a  esp-idf/coap/libcoap.a  esp-idf/esp_adc_cal/libesp_adc_cal.a  esp-idf/esp_hid/libesp_hid.a  esp-idf/esp_lcd/libesp_lcd.a  esp-idf/esp_local_ctrl/libesp_local_ctrl.a  esp-idf/esp_websocket_client/libesp_websocket_client.a  esp-idf/expat/libexpat.a  esp-idf/fatfs/libfatfs.a  esp-idf/wear_levelling/libwear_levelling.a  esp-idf/freemodbus/libfreemodbus.a  esp-idf/jsmn/libjsmn.a  esp-idf/libsodium/liblibsodium.a  esp-idf/mqtt/libmqtt.a  esp-idf/openssl/libopenssl.a  esp-idf/perfmon/libperfmon.a  esp-idf/spiffs/libspiffs.a  esp-idf/wifi_provisioning/libwifi_provisioning.a  esp-idf/protocomm/libprotocomm.a  esp-idf/protobuf-c/libprotobuf-c.a  esp-idf/mdns/libmdns.a  esp-idf/console/libconsole.a  esp-idf/json/libjson.a  esp-idf/rustlib/target/xtensa-esp32-espidf/release/librustlib.a  esp-idf/clib/libclib.a  esp-idf/esp_ringbuf/libesp_ringbuf.a  esp-idf/efuse/libefuse.a  esp-idf/esp_ipc/libesp_ipc.a  esp-idf/driver/libdriver.a  esp-idf/esp_pm/libesp_pm.a  esp-idf/mbedtls/libmbedtls.a  esp-idf/app_update/libapp_update.a  esp-idf/bootloader_support/libbootloader_support.a  esp-idf/spi_flash/libspi_flash.a  esp-idf/nvs_flash/libnvs_flash.a  esp-idf/pthread/libpthread.a  esp-idf/esp_gdbstub/libesp_gdbstub.a  esp-idf/espcoredump/libespcoredump.a  esp-idf/esp_phy/libesp_phy.a  esp-idf/esp_system/libesp_system.a  esp-idf/esp_rom/libesp_rom.a  esp-idf/hal/libhal.a  esp-idf/vfs/libvfs.a  esp-idf/esp_eth/libesp_eth.a  esp-idf/tcpip_adapter/libtcpip_adapter.a  esp-idf/esp_netif/libesp_netif.a  esp-idf/esp_event/libesp_event.a  esp-idf/wpa_supplicant/libwpa_supplicant.a  esp-idf/esp_wifi/libesp_wifi.a  esp-idf/lwip/liblwip.a  esp-idf/log/liblog.a  esp-idf/heap/libheap.a  esp-idf/soc/libsoc.a  esp-idf/esp_hw_support/libesp_hw_support.a  esp-idf/xtensa/libxtensa.a  esp-idf/esp_common/libesp_common.a  esp-idf/esp_timer/libesp_timer.a  esp-idf/freertos/libfreertos.a  esp-idf/newlib/libnewlib.a  esp-idf/cxx/libcxx.a  esp-idf/app_trace/libapp_trace.a  esp-idf/nghttp/libnghttp.a  esp-idf/esp-tls/libesp-tls.a  esp-idf/tcp_transport/libtcp_transport.a  esp-idf/esp_http_client/libesp_http_client.a  esp-idf/esp_http_server/libesp_http_server.a  esp-idf/esp_https_ota/libesp_https_ota.a  esp-idf/sdmmc/libsdmmc.a  esp-idf/esp_serial_slave_link/libesp_serial_slave_link.a  esp-idf/ulp/libulp.a  esp-idf/mbedtls/mbedtls/library/libmbedtls.a  esp-idf/mbedtls/mbedtls/library/libmbedcrypto.a  esp-idf/mbedtls/mbedtls/library/libmbedx509.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libcoexist.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libcore.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libespnow.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libmesh.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libnet80211.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libpp.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libsmartconfig.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libwapi.a  esp-idf/esp_ringbuf/libesp_ringbuf.a  esp-idf/efuse/libefuse.a  esp-idf/esp_ipc/libesp_ipc.a  esp-idf/driver/libdriver.a  esp-idf/esp_pm/libesp_pm.a  esp-idf/mbedtls/libmbedtls.a  esp-idf/app_update/libapp_update.a  esp-idf/bootloader_support/libbootloader_support.a  esp-idf/spi_flash/libspi_flash.a  esp-idf/nvs_flash/libnvs_flash.a  esp-idf/pthread/libpthread.a  esp-idf/esp_gdbstub/libesp_gdbstub.a  esp-idf/espcoredump/libespcoredump.a  esp-idf/esp_phy/libesp_phy.a  esp-idf/esp_system/libesp_system.a  esp-idf/esp_rom/libesp_rom.a  esp-idf/hal/libhal.a  esp-idf/vfs/libvfs.a  esp-idf/esp_eth/libesp_eth.a  esp-idf/tcpip_adapter/libtcpip_adapter.a  esp-idf/esp_netif/libesp_netif.a  esp-idf/esp_event/libesp_event.a  esp-idf/wpa_supplicant/libwpa_supplicant.a  esp-idf/esp_wifi/libesp_wifi.a  esp-idf/lwip/liblwip.a  esp-idf/log/liblog.a  esp-idf/heap/libheap.a  esp-idf/soc/libsoc.a  esp-idf/esp_hw_support/libesp_hw_support.a  esp-idf/xtensa/libxtensa.a  esp-idf/esp_common/libesp_common.a  esp-idf/esp_timer/libesp_timer.a  esp-idf/freertos/libfreertos.a  esp-idf/newlib/libnewlib.a  esp-idf/cxx/libcxx.a  esp-idf/app_trace/libapp_trace.a  esp-idf/nghttp/libnghttp.a  esp-idf/esp-tls/libesp-tls.a  esp-idf/tcp_transport/libtcp_transport.a  esp-idf/esp_http_client/libesp_http_client.a  esp-idf/esp_http_server/libesp_http_server.a  esp-idf/esp_https_ota/libesp_https_ota.a  esp-idf/sdmmc/libsdmmc.a  esp-idf/esp_serial_slave_link/libesp_serial_slave_link.a  esp-idf/ulp/libulp.a  esp-idf/mbedtls/mbedtls/library/libmbedtls.a  esp-idf/mbedtls/mbedtls/library/libmbedcrypto.a  esp-idf/mbedtls/mbedtls/library/libmbedx509.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libcoexist.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libcore.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libespnow.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libmesh.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libnet80211.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libpp.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libsmartconfig.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libwapi.a  esp-idf/esp_ringbuf/libesp_ringbuf.a  esp-idf/efuse/libefuse.a  esp-idf/esp_ipc/libesp_ipc.a  esp-idf/driver/libdriver.a  esp-idf/esp_pm/libesp_pm.a  esp-idf/mbedtls/libmbedtls.a  esp-idf/app_update/libapp_update.a  esp-idf/bootloader_support/libbootloader_support.a  esp-idf/spi_flash/libspi_flash.a  esp-idf/nvs_flash/libnvs_flash.a  esp-idf/pthread/libpthread.a  esp-idf/esp_gdbstub/libesp_gdbstub.a  esp-idf/espcoredump/libespcoredump.a  esp-idf/esp_phy/libesp_phy.a  esp-idf/esp_system/libesp_system.a  esp-idf/esp_rom/libesp_rom.a  esp-idf/hal/libhal.a  esp-idf/vfs/libvfs.a  esp-idf/esp_eth/libesp_eth.a  esp-idf/tcpip_adapter/libtcpip_adapter.a  esp-idf/esp_netif/libesp_netif.a  esp-idf/esp_event/libesp_event.a  esp-idf/wpa_supplicant/libwpa_supplicant.a  esp-idf/esp_wifi/libesp_wifi.a  esp-idf/lwip/liblwip.a  esp-idf/log/liblog.a  esp-idf/heap/libheap.a  esp-idf/soc/libsoc.a  esp-idf/esp_hw_support/libesp_hw_support.a  esp-idf/xtensa/libxtensa.a  esp-idf/esp_common/libesp_common.a  esp-idf/esp_timer/libesp_timer.a  esp-idf/freertos/libfreertos.a  esp-idf/newlib/libnewlib.a  esp-idf/cxx/libcxx.a  esp-idf/app_trace/libapp_trace.a  esp-idf/nghttp/libnghttp.a  esp-idf/esp-tls/libesp-tls.a  esp-idf/tcp_transport/libtcp_transport.a  esp-idf/esp_http_client/libesp_http_client.a  esp-idf/esp_http_server/libesp_http_server.a  esp-idf/esp_https_ota/libesp_https_ota.a  esp-idf/sdmmc/libsdmmc.a  esp-idf/esp_serial_slave_link/libesp_serial_slave_link.a  esp-idf/ulp/libulp.a  esp-idf/mbedtls/mbedtls/library/libmbedtls.a  esp-idf/mbedtls/mbedtls/library/libmbedcrypto.a  esp-idf/mbedtls/mbedtls/library/libmbedx509.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libcoexist.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libcore.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libespnow.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libmesh.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libnet80211.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libpp.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libsmartconfig.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libwapi.a  esp-idf/esp_ringbuf/libesp_ringbuf.a  esp-idf/efuse/libefuse.a  esp-idf/esp_ipc/libesp_ipc.a  esp-idf/driver/libdriver.a  esp-idf/esp_pm/libesp_pm.a  esp-idf/mbedtls/libmbedtls.a  esp-idf/app_update/libapp_update.a  esp-idf/bootloader_support/libbootloader_support.a  esp-idf/spi_flash/libspi_flash.a  esp-idf/nvs_flash/libnvs_flash.a  esp-idf/pthread/libpthread.a  esp-idf/esp_gdbstub/libesp_gdbstub.a  esp-idf/espcoredump/libespcoredump.a  esp-idf/esp_phy/libesp_phy.a  esp-idf/esp_system/libesp_system.a  esp-idf/esp_rom/libesp_rom.a  esp-idf/hal/libhal.a  esp-idf/vfs/libvfs.a  esp-idf/esp_eth/libesp_eth.a  esp-idf/tcpip_adapter/libtcpip_adapter.a  esp-idf/esp_netif/libesp_netif.a  esp-idf/esp_event/libesp_event.a  esp-idf/wpa_supplicant/libwpa_supplicant.a  esp-idf/esp_wifi/libesp_wifi.a  esp-idf/lwip/liblwip.a  esp-idf/log/liblog.a  esp-idf/heap/libheap.a  esp-idf/soc/libsoc.a  esp-idf/esp_hw_support/libesp_hw_support.a  esp-idf/xtensa/libxtensa.a  esp-idf/esp_common/libesp_common.a  esp-idf/esp_timer/libesp_timer.a  esp-idf/freertos/libfreertos.a  esp-idf/newlib/libnewlib.a  esp-idf/cxx/libcxx.a  esp-idf/app_trace/libapp_trace.a  esp-idf/nghttp/libnghttp.a  esp-idf/esp-tls/libesp-tls.a  esp-idf/tcp_transport/libtcp_transport.a  esp-idf/esp_http_client/libesp_http_client.a  esp-idf/esp_http_server/libesp_http_server.a  esp-idf/esp_https_ota/libesp_https_ota.a  esp-idf/sdmmc/libsdmmc.a  esp-idf/esp_serial_slave_link/libesp_serial_slave_link.a  esp-idf/ulp/libulp.a  esp-idf/mbedtls/mbedtls/library/libmbedtls.a  esp-idf/mbedtls/mbedtls/library/libmbedcrypto.a  esp-idf/mbedtls/mbedtls/library/libmbedx509.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libcoexist.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libcore.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libespnow.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libmesh.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libnet80211.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libpp.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libsmartconfig.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libwapi.a  esp-idf/esp_ringbuf/libesp_ringbuf.a  esp-idf/efuse/libefuse.a  esp-idf/esp_ipc/libesp_ipc.a  esp-idf/driver/libdriver.a  esp-idf/esp_pm/libesp_pm.a  esp-idf/mbedtls/libmbedtls.a  esp-idf/app_update/libapp_update.a  esp-idf/bootloader_support/libbootloader_support.a  esp-idf/spi_flash/libspi_flash.a  esp-idf/nvs_flash/libnvs_flash.a  esp-idf/pthread/libpthread.a  esp-idf/esp_gdbstub/libesp_gdbstub.a  esp-idf/espcoredump/libespcoredump.a  esp-idf/esp_phy/libesp_phy.a  esp-idf/esp_system/libesp_system.a  esp-idf/esp_rom/libesp_rom.a  esp-idf/hal/libhal.a  esp-idf/vfs/libvfs.a  esp-idf/esp_eth/libesp_eth.a  esp-idf/tcpip_adapter/libtcpip_adapter.a  esp-idf/esp_netif/libesp_netif.a  esp-idf/esp_event/libesp_event.a  esp-idf/wpa_supplicant/libwpa_supplicant.a  esp-idf/esp_wifi/libesp_wifi.a  esp-idf/lwip/liblwip.a  esp-idf/log/liblog.a  esp-idf/heap/libheap.a  esp-idf/soc/libsoc.a  esp-idf/esp_hw_support/libesp_hw_support.a  esp-idf/xtensa/libxtensa.a  esp-idf/esp_common/libesp_common.a  esp-idf/esp_timer/libesp_timer.a  esp-idf/freertos/libfreertos.a  esp-idf/newlib/libnewlib.a  esp-idf/cxx/libcxx.a  esp-idf/app_trace/libapp_trace.a  esp-idf/nghttp/libnghttp.a  esp-idf/esp-tls/libesp-tls.a  esp-idf/tcp_transport/libtcp_transport.a  esp-idf/esp_http_client/libesp_http_client.a  esp-idf/esp_http_server/libesp_http_server.a  esp-idf/esp_https_ota/libesp_https_ota.a  esp-idf/sdmmc/libsdmmc.a  esp-idf/esp_serial_slave_link/libesp_serial_slave_link.a  esp-idf/ulp/libulp.a  esp-idf/mbedtls/mbedtls/library/libmbedtls.a  esp-idf/mbedtls/mbedtls/library/libmbedcrypto.a  esp-idf/mbedtls/mbedtls/library/libmbedx509.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libcoexist.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libcore.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libespnow.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libmesh.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libnet80211.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libpp.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libsmartconfig.a  /opt/esp/idf/components/esp_wifi/lib/esp32/libwapi.a  -Wl,--wrap=mbedtls_mpi_exp_mod  -u esp_app_desc  -u pthread_include_pthread_impl  -u pthread_include_pthread_cond_impl  -u pthread_include_pthread_local_storage_impl  -L /opt/esp/idf/components/esp_phy/lib/esp32  -lphy  esp-idf/esp_phy/libesp_phy.a  -lphy  esp-idf/esp_phy/libesp_phy.a  -lphy  -lrtc  -u ld_include_highint_hdl  -u start_app  -u start_app_other_cores  -L /opt/streams/build/esp-idf/esp_system/ld  -T memory.ld  -T sections.ld  -u __ubsan_include  -L /opt/esp/idf/components/esp_rom/esp32/ld  -T esp32.rom.ld  -T esp32.rom.api.ld  -T esp32.rom.libgcc.ld  -T esp32.rom.newlib-data.ld  -T esp32.rom.syscalls.ld  -T esp32.rom.newlib-funcs.ld  -T esp32.rom.newlib-time.ld  -Wl,--wrap=longjmp  -u __assert_func  -u vfs_include_syscalls_impl  -L /opt/esp/idf/components/esp_wifi/lib/esp32  -L /opt/esp/idf/components/soc/esp32/ld  -T esp32.peripherals.ld  /opt/esp/idf/components/xtensa/esp32/libxt_hal.a  -Wl,--undefined=uxTopUsedPriority  -u app_main  -lm  esp-idf/newlib/libnewlib.a  -u newlib_include_heap_impl  -u newlib_include_syscalls_impl  -u newlib_include_pthread_impl  -Wl,--wrap=_Unwind_SetEnableExceptionFdeSorting  -Wl,--wrap=__register_frame_info_bases  -Wl,--wrap=__register_frame_info  -Wl,--wrap=__register_frame  -Wl,--wrap=__register_frame_info_table_bases  -Wl,--wrap=__register_frame_info_table  -Wl,--wrap=__register_frame_table  -Wl,--wrap=__deregister_frame_info_bases  -Wl,--wrap=__deregister_frame_info  -Wl,--wrap=_Unwind_Find_FDE  -Wl,--wrap=_Unwind_GetGR  -Wl,--wrap=_Unwind_GetCFA  -Wl,--wrap=_Unwind_GetIP  -Wl,--wrap=_Unwind_GetIPInfo  -Wl,--wrap=_Unwind_GetRegionStart  -Wl,--wrap=_Unwind_GetDataRelBase  -Wl,--wrap=_Unwind_GetTextRelBase  -Wl,--wrap=_Unwind_SetIP  -Wl,--wrap=_Unwind_SetGR  -Wl,--wrap=_Unwind_GetLanguageSpecificData  -Wl,--wrap=_Unwind_FindEnclosingFunction  -Wl,--wrap=_Unwind_Resume  -Wl,--wrap=_Unwind_RaiseException  -Wl,--wrap=_Unwind_DeleteException  -Wl,--wrap=_Unwind_ForcedUnwind  -Wl,--wrap=_Unwind_Resume_or_Rethrow  -Wl,--wrap=_Unwind_Backtrace  -Wl,--wrap=__cxa_call_unexpected  -Wl,--wrap=__gxx_personality_v0  -u __cxa_guard_dummy  -lstdc++  esp-idf/pthread/libpthread.a  -lgcc  esp-idf/cxx/libcxx.a  -u __cxx_fatal_exception  esp-idf/app_trace/libapp_trace.a  -lgcov  esp-idf/app_trace/libapp_trace.a  -lgcov  -lc && :
/opt/xtensa-esp32-elf-clang/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld: esp-idf/rustlib/target/xtensa-esp32-espidf/release/librustlib.a(rustlib-8ed1900ea86a6c48.rand-4de7581c8c2fb914.rand.5x8vszn4-cgu.15.rcgu.o.rcgu.o):(.literal._ZN3std4sync4once4Once9call_once28_$u7b$$u7b$closure$u7d$$u7d$17hd74d63aeb634a063E.llvm.12770143606975383821+0x4): undefined reference to `pthread_atfork'
collect2: error: ld returned 1 exit status
ninja: build stopped: subcommand failed.
ninja failed with exit code 1

I noticed ESP-IDF pthread.c implementation does not implement pthread_atfork. Am I right in assuming there's nothing I can do ATM? Is it a bug, pending implementation, or can't be implemented?

In any case, this should probably be caught at compile time rather than link time. If you could point me to the right repository to where report this issue I'd appreciated it.

• Removes using deprecated spi_flash_get_chip_size()
• Fixes format strings

I tested build for ESP32-C3 with IDF branches:

• release/v4.3
• release/v4.4
• release/v5.0
• master

After running the installation steps for ESP-IDF and esp-rs/rust-build as well as sourcing the environment for both esp-idf and the rust environment the build fails:

get_idf
source ~/esp32/rust-build/export-esp-rust.sh
idf.py set-target esp32
idf.py build

The build fails with the following error:

[848/854] Building C object esp-idf/main/CMakeFiles/__idf_main.dir/main.c.obj
FAILED: esp-idf/main/CMakeFiles/__idf_main.dir/main.c.obj 
/home/void/.espressif/tools/xtensa-esp32-elf/esp-2021r2-patch3-8.4.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc -DMBEDTLS_CONFIG_FILE=\"mbedtls/esp_config.h\" -DUNITY_INCLUDE_CONFIG_H -I/home/void/esp32/rust-esp32-example/build/config -I/home/void/esp32/esp-idf/components/newlib/platform_include -I/home/void/esp32/esp-idf/components/freertos/FreeRTOS-Kernel/include -I/home/void/esp32/esp-idf/components/freertos/esp_additions/include/freertos -I/home/void/esp32/esp-idf/components/freertos/FreeRTOS-Kernel/portable/xtensa/include -I/home/void/esp32/esp-idf/components/freertos/esp_additions/include -I/home/void/esp32/esp-idf/components/esp_hw_support/include -I/home/void/esp32/esp-idf/components/esp_hw_support/include/soc -I/home/void/esp32/esp-idf/components/esp_hw_support/include/soc/esp32 -I/home/void/esp32/esp-idf/components/esp_hw_support/port/esp32/. -I/home/void/esp32/esp-idf/components/esp_hw_support/port/esp32/private_include -I/home/void/esp32/esp-idf/components/heap/include -I/home/void/esp32/esp-idf/components/log/include -I/home/void/esp32/esp-idf/components/lwip/include/apps -I/home/void/esp32/esp-idf/components/lwip/include/apps/sntp -I/home/void/esp32/esp-idf/components/lwip/lwip/src/include -I/home/void/esp32/esp-idf/components/lwip/port/esp32/include -I/home/void/esp32/esp-idf/components/lwip/port/esp32/include/arch -I/home/void/esp32/esp-idf/components/soc/include -I/home/void/esp32/esp-idf/components/soc/esp32/. -I/home/void/esp32/esp-idf/components/soc/esp32/include -I/home/void/esp32/esp-idf/components/hal/esp32/include -I/home/void/esp32/esp-idf/components/hal/include -I/home/void/esp32/esp-idf/components/hal/platform_port/include -I/home/void/esp32/esp-idf/components/esp_rom/include -I/home/void/esp32/esp-idf/components/esp_rom/include/esp32 -I/home/void/esp32/esp-idf/components/esp_rom/esp32 -I/home/void/esp32/esp-idf/components/esp_common/include -I/home/void/esp32/esp-idf/components/esp_system/include -I/home/void/esp32/esp-idf/components/esp_system/port/soc -I/home/void/esp32/esp-idf/components/esp_system/port/include/private -I/home/void/esp32/esp-idf/components/xtensa/include -I/home/void/esp32/esp-idf/components/xtensa/esp32/include -I/home/void/esp32/esp-idf/components/efuse/include -I/home/void/esp32/esp-idf/components/efuse/esp32/include -I/home/void/esp32/esp-idf/components/vfs/include -I/home/void/esp32/esp-idf/components/esp_wifi/include -I/home/void/esp32/esp-idf/components/esp_event/include -I/home/void/esp32/esp-idf/components/esp_netif/include -I/home/void/esp32/esp-idf/components/esp_eth/include -I/home/void/esp32/esp-idf/components/esp_phy/include -I/home/void/esp32/esp-idf/components/esp_phy/esp32/include -I/home/void/esp32/esp-idf/components/esp_timer/include -I/home/void/esp32/esp-idf/components/esp_ringbuf/include -I/home/void/esp32/esp-idf/components/driver/include -I/home/void/esp32/esp-idf/components/driver/deprecated -I/home/void/esp32/esp-idf/components/driver/esp32/include -I/home/void/esp32/esp-idf/components/esp_pm/include -I/home/void/esp32/esp-idf/components/mbedtls/port/include -I/home/void/esp32/esp-idf/components/mbedtls/mbedtls/include -I/home/void/esp32/esp-idf/components/mbedtls/esp_crt_bundle/include -I/home/void/esp32/esp-idf/components/mbedtls/mbedtls/library -I/home/void/esp32/esp-idf/components/app_update/include -I/home/void/esp32/esp-idf/components/spi_flash/include -I/home/void/esp32/esp-idf/components/bootloader_support/include -I/home/void/esp32/esp-idf/components/bootloader_support/bootloader_flash/include -I/home/void/esp32/esp-idf/components/nvs_flash/include -I/home/void/esp32/esp-idf/components/pthread/include -I/home/void/esp32/esp-idf/components/wpa_supplicant/include -I/home/void/esp32/esp-idf/components/wpa_supplicant/port/include -I/home/void/esp32/esp-idf/components/wpa_supplicant/esp_supplicant/include -I/home/void/esp32/esp-idf/components/app_trace/include -I/home/void/esp32/esp-idf/components/asio/asio/asio/include -I/home/void/esp32/esp-idf/components/asio/port/include -I/home/void/esp32/esp-idf/components/unity/include -I/home/void/esp32/esp-idf/components/unity/unity/src -I/home/void/esp32/esp-idf/components/cmock/CMock/src -I/home/void/esp32/esp-idf/components/console -I/home/void/esp32/esp-idf/components/http_parser -I/home/void/esp32/esp-idf/components/esp-tls -I/home/void/esp32/esp-idf/components/esp-tls/esp-tls-crypto -I/home/void/esp32/esp-idf/components/esp_adc_cal/include -I/home/void/esp32/esp-idf/components/esp_gdbstub/include -I/home/void/esp32/esp-idf/components/esp_gdbstub/xtensa -I/home/void/esp32/esp-idf/components/esp_gdbstub/esp32 -I/home/void/esp32/esp-idf/components/esp_hid/include -I/home/void/esp32/esp-idf/components/tcp_transport/include -I/home/void/esp32/esp-idf/components/esp_http_client/include -I/home/void/esp32/esp-idf/components/esp_http_server/include -I/home/void/esp32/esp-idf/components/esp_https_ota/include -I/home/void/esp32/esp-idf/components/esp_lcd/include -I/home/void/esp32/esp-idf/components/esp_lcd/interface -I/home/void/esp32/esp-idf/components/protobuf-c/protobuf-c -I/home/void/esp32/esp-idf/components/protocomm/include/common -I/home/void/esp32/esp-idf/components/protocomm/include/security -I/home/void/esp32/esp-idf/components/protocomm/include/transports -I/home/void/esp32/esp-idf/components/mdns/include -I/home/void/esp32/esp-idf/components/esp_local_ctrl/include -I/home/void/esp32/esp-idf/components/sdmmc/include -I/home/void/esp32/esp-idf/components/esp_serial_slave_link/include -I/home/void/esp32/esp-idf/components/espcoredump/include -I/home/void/esp32/esp-idf/components/espcoredump/include/port/xtensa -I/home/void/esp32/esp-idf/components/wear_levelling/include -I/home/void/esp32/esp-idf/components/fatfs/diskio -I/home/void/esp32/esp-idf/components/fatfs/vfs -I/home/void/esp32/esp-idf/components/fatfs/src -I/home/void/esp32/esp-idf/components/freemodbus/common/include -I/home/void/esp32/esp-idf/components/idf_test/include -I/home/void/esp32/esp-idf/components/idf_test/include/esp32 -I/home/void/esp32/esp-idf/components/ieee802154/include -I/home/void/esp32/esp-idf/components/json/cJSON -I/home/void/esp32/esp-idf/components/mqtt/esp-mqtt/include -I/home/void/esp32/esp-idf/components/perfmon/include -I/home/void/esp32/esp-idf/components/spiffs/include -I/home/void/esp32/esp-idf/components/ulp/ulp_common/include -I/home/void/esp32/esp-idf/components/ulp/ulp_common/include/esp32 -I/home/void/esp32/esp-idf/components/wifi_provisioning/include -I/home/void/esp32/rust-esp32-example/components/clib/include -I/home/void/esp32/rust-esp32-example/build/esp-idf/rustlib/target -mlongcalls -Wno-frame-address  -ffunction-sections -fdata-sections -Wall -Werror=all -Wno-error=unused-function -Wno-error=unused-variable -Wno-error=deprecated-declarations -Wextra -Wno-unused-parameter -Wno-sign-compare -ggdb -Og -fmacro-prefix-map=/home/void/esp32/rust-esp32-example=. -fmacro-prefix-map=/home/void/esp32/esp-idf=/IDF -fstrict-volatile-bitfields -Wno-error=unused-but-set-variable -fno-jump-tables -fno-tree-switch-conversion -DconfigENABLE_FREERTOS_DEBUG_OCDAWARE=1 -std=gnu99 -Wno-old-style-declaration -D_GNU_SOURCE -DIDF_VER=\"v5.0-dev-2137-g2f9d47c708\" -DESP_PLATFORM -D_POSIX_READER_WRITER_LOCKS -MD -MT esp-idf/main/CMakeFiles/__idf_main.dir/main.c.obj -MF esp-idf/main/CMakeFiles/__idf_main.dir/main.c.obj.d -o esp-idf/main/CMakeFiles/__idf_main.dir/main.c.obj -c /home/void/esp32/rust-esp32-example/main/main.c
/home/void/esp32/rust-esp32-example/main/main.c: In function 'app_main':
/home/void/esp32/rust-esp32-example/main/main.c:23:5: error: unknown type name 'esp_chip_info_t'; did you mean 'multi_heap_info_t'?
     esp_chip_info_t chip_info;
     ^~~~~~~~~~~~~~~
     multi_heap_info_terror=implicit-function-declaration]
     esp_chip_info(&chip_info);
     ^~~~~~~~~~~~~
     esp_rom_printf
/home/void/esp32/rust-esp32-example/main/main.c:27:22: error: request for member 'cores' in something not a structure or union
             chip_info.cores,
                      ^
/home/void/esp32/rust-esp32-example/main/main.c:28:23: error: request for member 'features' in something not a structure or union
             (chip_info.features & CHIP_FEATURE_BT) ? "/BT" : "",
                       ^
/home/void/esp32/rust-esp32-example/main/main.c:28:35: error: 'CHIP_FEATURE_BT' undeclared (first use in this function)
             (chip_info.features & CHIP_FEATURE_BT) ? "/BT" : "",
                                   ^~~~~~~~~~~~~~~
/home/void/esp32/rust-esp32-example/main/main.c:28:35: note: each undeclared identifier is reported only once for each function it appears in
/home/void/esp32/rust-esp32-example/main/main.c:29:23: error: request for member 'features' in something not a structure or union
             (chip_info.features & CHIP_FEATURE_BLE) ? "/BLE" : "");
                       ^
/home/void/esp32/rust-esp32-example/main/main.c:29:35: error: 'CHIP_FEATURE_BLE' undeclared (first use in this function)
             (chip_info.features & CHIP_FEATURE_BLE) ? "/BLE" : "");
                                   ^~~~~~~~~~~~~~~~
/home/void/esp32/rust-esp32-example/main/main.c:31:46: error: request for member 'revision' in something not a structure or union
     printf("silicon revision %d, ", chip_info.revision);
/home/void/esp32/rust-esp32-example/main/main.c:24:5: error: implicit declaration of function 'esp_chip_info'; did you mean 'esp_rom_printf'? [-W
                                              ^
/home/void/esp32/rust-esp32-example/main/main.c:34:23: error: request for member 'features' in something not a structure or union
             (chip_info.features & CHIP_FEATURE_EMB_FLASH) ? "embedded" : "external");
                       ^
/home/void/esp32/rust-esp32-example/main/main.c:34:35: error: 'CHIP_FEATURE_EMB_FLASH' undeclared (first use in this function)
             (chip_info.features & CHIP_FEATURE_EMB_FLASH) ? "embedded" : "external");
                                   ^~~~~~~~~~~~~~~~~~~~~~
cc1: some warnings being treated as errors
ninja: build stopped: subcommand failed.
ninja failed with exit code 1

I am attempting to find a docker image that will let me build Rust apps for an Adafruit ESP32 feather. If I docker run -it espressif/idf-rust-examples it malfunctions and drops me back to the original shell.

Detecting the Python interpreter
Checking "python" ...
Python 3.8.10
"python" has been detected
Adding ESP-IDF tools to PATH...
Using Python interpreter in /opt/esp/python_env/idf5.0_py3.8_env/bin/python
Checking if Python packages are up to date...
Downloading espidf.constraints.v5.0.txt to /root/.espressif/espidf.constraints.v5.0.txt.tmp
Done
Constraint file: /root/.espressif/espidf.constraints.v5.0.txt
Requirement files:
 - /opt/esp/idf/requirements.core.txt
Python being checked: /opt/esp/python_env/idf5.0_py3.8_env/bin/python
The following Python requirements are not satisfied:
idf-component-manager~=1.1
To install the missing packages, please run "install.sh"
Diagnostic information:
    IDF_PYTHON_ENV_PATH: /opt/esp/python_env/idf5.0_py3.8_env
    Python interpreter used: /opt/esp/python_env/idf5.0_py3.8_env/bin/python

It seems that the Dockerfile needs some fixes.

[ 64%] Built target mbedtls
[ 64%] Generating x509_crt_bundle
gen_crt_bundle.py: Invalid certificate in /home/raay/Workspace/Robotics/esp-idf/components/mbedtls/esp_crt_bundle/cacrt_all.pem
Invalid certificate
make[2]: *** [esp-idf/mbedtls/CMakeFiles/__idf_mbedtls.dir/build.make:67: esp-idf/mbedtls/x509_crt_bundle] Error 2
make[1]: *** [CMakeFiles/Makefile2:2485: esp-idf/mbedtls/CMakeFiles/__idf_mbedtls.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
   Compiling toml v0.5.8
   Compiling rustlib v0.1.0 (/home/raay/Workspace/Robotics/rust-esp32-example/components/rustlib)
error: failed to run custom build command for `rustlib v0.1.0 (/home/raay/Workspace/Robotics/rust-esp32-example/components/rustlib)`

Caused by:
  process didn't exit successfully: `/home/raay/Workspace/Robotics/rust-esp32-example/build/esp-idf/rustlib/target/release/build/rustlib-88b5bbc1e09b33a8/build-script-build` (exit status: 101)
  --- stdout
  cargo:rerun-if-changed=/home/raay/Workspace/Robotics/rust-esp32-example/build/esp-idf/rustlib/target/RustApi.h

  --- stderr
  thread 'main' panicked at 'libclang error; possible causes include:
  - Invalid flag syntax
  - Unrecognized flags
  - Invalid flag arguments
  - File I/O errors
  - Host vs. target architecture mismatch
  If you encounter an error missing from this list, please file an issue or a PR!', /home/raay/.cargo/registry/src/github.com-1ecc6299db9ec823/bindgen-0.58.1/src/ir/context.rs:535:15
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
make[2]: *** [esp-idf/rustlib/CMakeFiles/rustlib_project.dir/build.make:112: esp-idf/rustlib/stamp/rustlib_project-build] Error 101
make[1]: *** [CMakeFiles/Makefile2:4931: esp-idf/rustlib/CMakeFiles/rustlib_project.dir/all] Error 2
make: *** [Makefile:130: all] Error 2
make failed with exit code 2

Hi,

thanks for the amazing work on Rust for embedded ESP, I've been successfully using the Docker container to build the code, but the last step of the build (the linking) seems to be very slow, taking perhaps 1h on my recent osX machine,

do you know what could be the cause of this issue? For now this is a bit blocking, because we would love to use a containerized environment for development, but we can't have build times that are more than 1 or 2 minutes for a simple code