diff --git a/difftest/default.nix b/difftest/default.nix
index 9e2c547698..69ceda1960 100644
--- a/difftest/default.nix
+++ b/difftest/default.nix
@@ -1,4 +1,5 @@
 { lib
+, libspike
 , callPackage
 , elaborateConfig
 
@@ -45,6 +46,8 @@ let
     env = {
       VERILATED_INC_DIR = "${verilated}/include";
       VERILATED_LIB_DIR = "${verilated}/lib";
+      SPIKE_LIB_DIR = "${libspike}/lib";
+      SPIKE_INTERFACES_LIB_DIR = "${spike_interfaces}/lib";
       DESIGN_VLEN = elaborateConfig.parameter.vLen;
       DESIGN_DLEN = elaborateConfig.parameter.dLen;
     };
diff --git a/difftest/spike_rs/build.rs b/difftest/spike_rs/build.rs
new file mode 100644
index 0000000000..be5a213b2f
--- /dev/null
+++ b/difftest/spike_rs/build.rs
@@ -0,0 +1,13 @@
+use std::env;
+
+fn main() {
+  println!("cargo::rustc-link-search=native={}", env::var("SPIKE_LIB_DIR").expect("SPIKE_LIB_DIR should be set"));
+  println!("cargo::rustc-link-lib=static=riscv");
+  println!("cargo::rustc-link-lib=static=softfloat");
+  println!("cargo::rustc-link-lib=static=disasm");
+
+  println!("cargo::rustc-link-search=native={}", env::var("SPIKE_INTERFACES_LIB_DIR").expect("SPIKE_INTERFACES_LIB_DIR should be set"));
+  println!("cargo::rustc-link-lib=static=spike_interfaces");
+
+  println!("cargo::rerun-if-env-changed=VERILATED_LIB_DIR");
+}