11e988b8f0
supress -> suppress Co-authored-by: Gustavo Henrique Nihei <38959758+gustavonihei@users.noreply.github.com>
116 lines
3.7 KiB
Rust
116 lines
3.7 KiB
Rust
use std::{env, fs::File, io::Write, path::PathBuf, process::exit};
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#[cfg(feature = "direct-boot")]
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fn main() {
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check_opt_level();
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// Put the linker script somewhere the linker can find it
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let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
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File::create(out.join("memory.x"))
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.unwrap()
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.write_all(include_bytes!("ld/db-esp32c3-memory.x"))
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.unwrap();
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File::create(out.join("esp32c3-link.x"))
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.unwrap()
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.write_all(include_bytes!("ld/db-esp32c3-link.x"))
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.unwrap();
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File::create(out.join("riscv-link.x"))
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.unwrap()
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.write_all(include_bytes!("ld/db-riscv-link.x"))
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.unwrap();
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File::create(out.join("linkall.x"))
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.unwrap()
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.write_all(include_bytes!("ld/db-linkall.x"))
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.unwrap();
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println!("cargo:rustc-link-search={}", out.display());
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// Only re-run the build script when memory.x is changed,
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// instead of when any part of the source code changes.
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println!("cargo:rerun-if-changed=ld/memory.x");
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add_defaults();
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}
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#[cfg(not(feature = "direct-boot"))]
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fn main() {
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check_opt_level();
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// Put the linker script somewhere the linker can find it
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let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
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File::create(out.join("memory.x"))
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.unwrap()
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.write_all(include_bytes!("ld/bl-esp32c3-memory.x"))
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.unwrap();
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File::create(out.join("bl-riscv-link.x"))
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.unwrap()
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.write_all(include_bytes!("ld/bl-riscv-link.x"))
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.unwrap();
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File::create(out.join("linkall.x"))
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.unwrap()
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.write_all(include_bytes!("ld/bl-linkall.x"))
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.unwrap();
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println!("cargo:rustc-link-search={}", out.display());
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// Only re-run the build script when memory.x is changed,
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// instead of when any part of the source code changes.
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println!("cargo:rerun-if-changed=ld/memory.x");
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add_defaults();
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}
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fn add_defaults() {
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let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
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File::create(out.join("hal-defaults.x"))
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.unwrap()
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.write_all(include_bytes!("ld/hal-defaults.x"))
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.unwrap();
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println!("cargo:rustc-link-search={}", out.display());
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}
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const OPT_LEVEL_Z_MSG: &str = r#"opt-level=z will produce broken 128-bit shifts (i.e. `1u128 << i`). The hal's interrupt handling relies on that operation, causing an 'attempt to subtract with overflow' panic if an enabled interrupt is triggered while using that opt-level.
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Please use `opt-level="s"` in lieu of "z", or alternatively enable `features = ["allow-opt-level-z"]` to suppress this error. The latter option is only recommended if you:
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* Do not use interrupts, and
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* Do not have any shifts of 128-bit integers (either u128 or i128) in your code
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See also: https://github.com/esp-rs/esp-hal/issues/196
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and: https://github.com/llvm/llvm-project/issues/57988
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"#;
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// Once a rust nightly has a fix for https://github.com/llvm/llvm-project/issues/57988 , consider:
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// 1. Removing this check in favor of bumping the minimum rust verison, and/or
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// 2. Augmenting this check to ensure that version for opt-level=z
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fn check_opt_level() {
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if cfg!(feature = "allow-opt-level-z") {
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return;
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}
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match env::var_os("OPT_LEVEL") {
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Some(ref opt_level) => {
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if opt_level == "z" {
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println!(
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"{}",
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OPT_LEVEL_Z_MSG
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.lines()
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.into_iter()
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.map(|l| format!("cargo:warning={l}"))
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.collect::<Vec<String>>()
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.join("\n")
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);
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exit(1);
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}
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}
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_ => {}
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}
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}
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