diff --git a/pkgs/development/interpreters/cling/default.nix b/pkgs/development/interpreters/cling/default.nix
index a53335fc4de6..a5a3de81bd5a 100644
--- a/pkgs/development/interpreters/cling/default.nix
+++ b/pkgs/development/interpreters/cling/default.nix
@@ -27,7 +27,7 @@
 
 # Build with libc++ (LLVM) rather than stdlibc++ (GCC).
 # This is experimental and not all features work.
-, useLLVMLibcxx ? false
+, useLLVMLibcxx ? clangStdenv.isDarwin
 }:
 
 let
@@ -119,7 +119,7 @@ let
   cxxFlags = if useLLVMLibcxx then [
     "-I" "${lib.getDev llvmPackages_13.libcxx}/include/c++/v1"
     "-L" "${llvmPackages_13.libcxx}/lib"
-    "-l" "${llvmPackages_13.libcxx}/lib/libc++.so"
+    "-l" "${llvmPackages_13.libcxx}/lib/libc++${stdenv.hostPlatform.extensions.sharedLibrary}"
   ] else [
     "-I" "${gcc-unwrapped}/include/c++/${gcc-unwrapped.version}"
     "-I" "${gcc-unwrapped}/include/c++/${gcc-unwrapped.version}/${stdenv.hostPlatform.config}"