diff --git a/libs/l2math/bindings/build.rs b/libs/l2math/bindings/build.rs
index ac2399d..ca15c71 100644
--- a/libs/l2math/bindings/build.rs
+++ b/libs/l2math/bindings/build.rs
@@ -4,7 +4,7 @@ use std::path::{Path, PathBuf};
 type Res<T = (), E = Box<dyn std::error::Error>> = Result<T, E>;
 
 fn main() -> Res {
-    if env::var("CARGO_CFG_TARGET_OS").unwrap() == "android" {
+    if env::var("CARGO_CFG_TARGET_OS")? == "android" {
         android()?;
     };
     Ok(())
@@ -14,11 +14,15 @@ fn android() -> Res {
     println!("cargo:rustc-link-lib=c++_shared");
 
     let output_path = env::var("CARGO_NDK_OUTPUT_PATH")?;
+    println!("output_path: {}", &output_path);
     let ndk_sysroot_libs_path =
         env::var_os("CARGO_NDK_SYSROOT_LIBS_PATH").ok_or("CARGO_NDK_SYSROOT_LIBS_PATH not set")?;
+    println!("ndk_sysroot_libs_path: {:?}", &ndk_sysroot_libs_path);
     let sysroot_libs_path: PathBuf = ndk_sysroot_libs_path.into();
     let lib_path = sysroot_libs_path.join("libc++_shared.so");
+    println!("lib_path: {:?}", &lib_path);
     let new_lib_path = Path::new(&output_path).join("libc++_shared.so");
+    println!("new_lib_path: {:?}", &new_lib_path);
     std::fs::copy(lib_path, new_lib_path)?;
     Ok(())
 }