add some debugging

Signed-off-by: Jorge Prendes <[email protected]>

Author: jprendes

src/wasm_runtime/build.rs

@@ -78,6 +78,8 @@ fn main() {
     println!("cargo:rerun-if-changed=.");
     let mut cfg = cc::Build::new();
     cfg.compiler(toolchain_dir.join("clang"));
+    let tool = cfg.get_compiler();
+    println!("cargo:warning=using compiler at {:?}", tool.path());
 
     // get the version of the wasmtime crate