25 lines
1.1 KiB
Markdown
25 lines
1.1 KiB
Markdown
(note: this is a temporary file, to be added-to by anybody, and moved to
|
|
release-notes at release time)
|
|
|
|
Notable changes
|
|
===============
|
|
|
|
Migration to Clang and static libc++
|
|
------------------------------------
|
|
|
|
`zcashd` now builds its C++ (and C) dependencies entirely with a pinned version
|
|
of Clang, and statically links libc++ instead of dynamically linking libstdc++.
|
|
This migration enables us to reliably use newer C++ features while supporting
|
|
older LTS platforms, be more confident in the compiler's optimisations, and
|
|
leverage security features such as sanitisers and efficient fuzzing.
|
|
|
|
Additionally, because both Clang and rustc use LLVM as their backend, we can
|
|
optimise across the FFI boundary between them. This reduces the cost of moving
|
|
between C++ and Rust, making it easier to build more functionality in Rust
|
|
(though not making it costless, as we still need to work within the constraints
|
|
of the C ABI).
|
|
|
|
The system compiler is still used to compile a few native dependencies (used by
|
|
the build machine to then compile `zcashd` for the target machine). These will
|
|
likely also be migrated to use the pinned Clang in a future release.
|