Different linker error

.cargo/config.toml

@@ -1,22 +1,14 @@
-[build]
-target = "xtensa-esp32s3-espidf"
-
-[target.xtensa-esp32s3-espidf]
-linker = "ldproxy"
-runner = "espflash flash --monitor" # Select this runner for espflash v3.x.x
-rustflags = [
-    "--cfg",
-    "espidf_time64",
-] # Extending time_t for ESP IDF 5: https://github.com/esp-rs/rust/issues/110
+[target.xtensa-esp32s3-none-elf]
+runner = "espflash flash --monitor"
 
-[unstable]
-build-std = ["std", "panic_abort"]
 
 [env]
-MCU = "esp32s3"
-# Note: this variable is not used by the pio builder (`cargo build --features pio`)
-ESP_IDF_VERSION = "v5.2.2"
-ESP_IDF_PATH_ISSUES = 'warn'
+ESP_LOGLEVEL = "INFO"
 
-# Workaround for https://github.com/esp-rs/esp-idf-template/issues/174 
-CRATE_CC_NO_DEFAULTS = "1"
+[build]
+rustflags = ["-C", "link-arg=-nostartfiles"]
+
+target = "xtensa-esp32s3-none-elf"
+
+[unstable]
+build-std = ["alloc", "core"]

src/lib.rs

@@ -1,4 +1,4 @@
-// #![no_std]
+#![no_std]
 // #![feature(const_mut_refs)]
 
 // use core::{