--- /dev/null
+use crate::spec::{LinkerFlavor, PanicStrategy, RelocModel};
+use crate::spec::{Target, TargetOptions};
+
+pub fn target() -> Target {
+ Target {
+ data_layout: "e-m:e-p:32:32-i64:64-n32-S128".to_string(),
+ llvm_target: "riscv32".to_string(),
+ pointer_width: 32,
+ arch: "riscv32".to_string(),
+
+ options: TargetOptions {
+ families: vec!["unix".to_string()],
+ os: "espidf".to_string(),
+ env: "newlib".to_string(),
+ vendor: "espressif".to_string(),
+ linker_flavor: LinkerFlavor::Gcc,
+ linker: Some("riscv32-esp-elf-gcc".to_string()),
+ cpu: "generic-rv32".to_string(),
+
+ // While the RiscV32IMC architecture does not natively support atomics, ESP-IDF does support
+ // the __atomic* and __sync* GCC builtins, so setting `max_atomic_width` to `Some(32)`
+ // and `atomic_cas` to `true` will cause the compiler to emit libcalls to these builtins.
+ //
+ // Support for atomics is necessary for the Rust STD library, which is supported by the ESP-IDF framework.
+ max_atomic_width: Some(32),
+ atomic_cas: true,
+
+ features: "+m,+c".to_string(),
+ executables: true,
+ panic_strategy: PanicStrategy::Abort,
+ relocation_model: RelocModel::Static,
+ emit_debug_gdb_scripts: false,
+ eh_frame_header: false,
+ ..Default::default()
+ },
+ }
+}