chore: remove sys/build.rs

Signed-off-by: Roman Volosatovs <[email protected]>

crates/generate-header/Cargo.toml

@@ -0,0 +1,15 @@
+[package]
+name = "generate-header"
+version = "0.1.0"
+publish = false
+
+authors.workspace = true
+categories.workspace = true
+edition.workspace = true
+homepage.workspace = true
+license.workspace = true
+repository.workspace = true
+
+[dependencies]
+anyhow = { workspace = true, features = ["std"] }
+cbindgen = { workspace = true }

crates/sys/build.rs → crates/generate-header/src/main.rs

@@ -1,25 +1,26 @@
 use std::env;
-use std::path::Path;
+use std::path::PathBuf;
 
 use anyhow::Context as _;
 
 fn main() -> anyhow::Result<()> {
     let crate_dir =
         env::var("CARGO_MANIFEST_DIR").context("failed to lookup `CARGO_MANIFEST_DIR`")?;
+    let crate_dir = PathBuf::from(crate_dir);
+    let crates = crate_dir
+        .parent()
+        .context("failed to lookup crate parent directory")?;
+    let root = crates
+        .parent()
+        .context("failed to lookup workspace root directory")?;
     let bindings = cbindgen::generate_with_config(
-        &crate_dir,
+        crates.join("sys"),
         cbindgen::Config {
             language: cbindgen::Language::C,
             ..Default::default()
         },
     )
     .context("failed to generate bindings")?;
-    bindings.write_to_file(
-        Path::new(&crate_dir)
-            .join("..")
-            .join("..")
-            .join("include")
-            .join("west.h"),
-    );
+    bindings.write_to_file(root.join("include").join("west.h"));
     Ok(())
 }

crates/sys/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "west-sys"
-version = "0.1.0"
+version = "0.1.1"
 description = "WebAssembly component test runtime C bindings"
 
 authors.workspace = true
@@ -20,7 +20,3 @@ wasmtime = { workspace = true }
 wasmtime-cabish = { workspace = true }
 wasmtime-wasi = { workspace = true }
 west = { workspace = true }
-
-[build-dependencies]
-anyhow = { workspace = true }
-cbindgen = { workspace = true }

west.go

@@ -1,3 +1,5 @@
+//go:generate cargo run -p generate-header
+
 package west
 
 // #cgo               LDFLAGS: -lwest