Integrate benchmarks and differential tests against an EVM interpreter (#7)

crates/lld-sys/build.rs

@@ -8,16 +8,7 @@ fn llvm_config(arg: &str) -> String {
         .unwrap_or_else(|_| panic!("output of `llvm-config {arg}` should be utf8"))
 }
 
-fn main() {
-    let mut builder = cc::Build::new();
-    llvm_config("--cxxflags")
-        .split_whitespace()
-        .fold(&mut builder, |builder, flag| builder.flag(flag))
-        .flag("-Wno-unused-parameter")
-        .cpp(true)
-        .file("src/linker.cpp")
-        .compile("liblinker.a");
-
+fn set_rustc_link_flags() {
     println!("cargo:rustc-link-search=native={}", llvm_config("--libdir"));
 
     for lib in [
@@ -30,9 +21,25 @@ fn main() {
         "LLVMLTO",
         "LLVMTargetParser",
         "LLVMBinaryFormat",
+        "LLVMDemangle",
     ] {
         println!("cargo:rustc-link-lib=static={lib}");
     }
 
+    #[cfg(target_os = "linux")]
+    println!("cargo:rustc-link-lib=dylib=stdc++");
+}
+
+fn main() {
+    llvm_config("--cxxflags")
+        .split_whitespace()
+        .fold(&mut cc::Build::new(), |builder, flag| builder.flag(flag))
+        .flag("-Wno-unused-parameter")
+        .cpp(true)
+        .file("src/linker.cpp")
+        .compile("liblinker.a");
+
+    set_rustc_link_flags();
+
     println!("cargo:rerun-if-changed=build.rs");
 }