riscv-semihosting: build: use cfg-check directives in build script

Uses new lint checks for `cfg` variables. Requires bumping the MSRV to `1.77.0`.
rust-embedded · May 5, 2024 · eb52de3 · eb52de3
1 parent ae01f6e
commit eb52de3
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diff --git a/riscv-semihosting/Cargo.toml b/riscv-semihosting/Cargo.toml
@@ -14,7 +14,7 @@ readme = "README.md"
 repository = "https://github.com/riscv-rust/riscv"
 version = "0.1.0"
 edition = "2021"
-rust-version = "1.60.0"
+rust-version = "1.77.0"
 
 [features]
 u-mode = []

diff --git a/riscv-semihosting/build.rs b/riscv-semihosting/build.rs
@@ -1,6 +1,8 @@
 use std::env;
 
 fn main() {
+    println!("cargo::rustc-check-cfg=cfg(riscv)");
+
     let target = env::var("TARGET").unwrap();
 
     if target.starts_with("riscv") {