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ivmarkov / rust-esp32-std-demo

Rust on ESP32 STD demo app. A demo STD binary crate for the ESP32[XX] and ESP-IDF, which connects to WiFi, Ethernet, drives a small HTTP server and draws on a LED screen.
Apache License 2.0
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Linker Error: undefined reference to `bind' #27

Closed cathiele closed 3 years ago

cathiele commented 3 years ago

I can not build the project with the xtensa-esp32-espidf target, it just works with the riscv32imc-esp-espidf target. When i try to build it for classic esp32 targets i get a linker error:

Error: Linker /home/myuser/clones/tmp/rust-esp32-std-demo/.embuild/espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/xtensa-esp32-elf-gcc failed: exit status: 1

STDERR OUTPUT:
          /home/myuser/clones/tmp/rust-esp32-std-demo/.embuild/espressif/tools/xtensa-esp32-elf/esp-2021r2-8.4.0/xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/8.4.0/../../../../xtensa-esp32-elf/bin/ld: /home/myuser/clones/tmp/rust-esp32-std-demo/target/xtensa-esp32-espidf/release/deps/libstd-8cb85e60f741e4fa.rlib(std-8cb85e60f741e4fa.std.1ubzggxa-cgu.6.rcgu.o):(.literal._ZN3std10sys_common3net11TcpListener4bind17h0813b699c582a6dfE+0x8): undefined reference to `bind'
          collect2: error: ld returned 1 exit status

i also tried with "native" feature and ESP_IDF_VERSION set to master but i still get the same linker error.

When remove the test_tcp_bind-Code the build (and flashing to the controller) works fine.

What can i do to fix this problem?

georgik commented 3 years ago

@cathiele Thank you for reporting the problem.

Risc architecture has different requirements which are already covered by upstream version of Rust.

Please check following requirements:

Please, test the following script which should fix all necessary requirements and export all necessary variables (branch test-flash): https://github.com/esp-rs/rust-build/tree/feature/test-flash ./test-rust-toolchain.sh

cathiele commented 3 years ago

Using the in README.md linked instructions from Rust Espressif compiler fork and the Espressif LLVM Clang fork i installed the toolchain from the esp-Branch as mentioned there, and not the current esp-1.56.0-branch of https://github.com/esp-rs/rust .

using esp-1.56.0 all works fine. thank you @georgik for your help!