Use libc++ (clang) rather than libstdc++ (gcc)

CHANGELOG.md

@@ -17,6 +17,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Update other dependencies to match Zebra
 
 ### Fixed
+- Switch to using `clang`'s `libc++`, rather than `gcc`'s `libstdc++`, to [match `zcashd`'s behaviour](https://github.com/zcash/zcash/blob/master/doc/release-notes/release-notes-4.1.0.md#migration-to-clang-and-static-libc)
 - Improve error reporting in `build.rs`
 
 ## [0.1.11] - 2023-02-24

Cargo.toml

@@ -73,6 +73,10 @@ zcash_note_encryption = "0.3"
 zcash_primitives = { version = "0.11", features = ["temporary-zcashd", "transparent-inputs"] }
 zcash_proofs = "0.11"
 
+# This dependency makes `zcash_script` use the same C++ library as `zcashd`:
+# https://github.com/zcash/zcash/blob/master/doc/release-notes/release-notes-4.1.0.md#migration-to-clang-and-static-libc
+link-cplusplus = { version = "1.0", features = ["libc++"] }
+
 [build-dependencies]
 # The `bindgen` dependency should automatically upgrade to match the version used by zebra-state's `rocksdb` dependency in:
 # https://github.com/ZcashFoundation/zebra/blob/main/zebra-state/Cargo.toml

src/lib.rs

@@ -8,6 +8,10 @@
 #![allow(unsafe_code)]
 #![allow(unused_imports)]
 
+/// This dependency makes `zcash_script` use the same C++ library as `zcashd`:
+/// https://github.com/zcash/zcash/blob/master/doc/release-notes/release-notes-4.1.0.md#migration-to-c
+extern crate link_cplusplus;
+
 // Use the generated C++ bindings
 include!(concat!(env!("OUT_DIR"), "/bindings.rs"));