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| CHANGELOG.md | ||
| Cargo.toml | ||
| LICENSE | ||
| README.md | ||
| build.rs | ||
| vendor-libsecp.sh | ||
README.md
Rust secp256k1-sys
Provides low-level bindings to the C FFI exposed by libsecp256k1.
Vendoring
The default build process is to build using the vendored libsecp256k1 sources in the depend
directory. These sources are prefixed with a special rust-secp256k1-sys-specific prefix
rustsecp256k1_v1_2_3_.
This prefix ensures that no symbol collision can happen:
- When a Rust project has two different versions of
rust-secp256k1in its depepdency tree, or - When
rust-secp256k1is used for building a static library in a context where existinglibsecp256k1symbols are already linked.
To update the vendored sources, use the vendor-libsecp.sh script: ./vendor-libsecp.sh <rev>
- Where
<rev>is the git revision oflibsecp256k1to checkout. If you do not specify a revision, the script will simply clone the repo and use whatever revision the default branch is pointing to.
Linking to external symbols
Danger: doing this incorrectly may have catastrophic consequences!
This is mainly intended for applications consisting of various programming languages that intend to
link the same library to save space, or bundles of multiple binaries coming from the same source. Do
not use this to link to a random secp256k1 library you found in your OS! If you are packaging
software that depends on rust-secp256k1, using this flag to link to another package, make sure you
stay within the binary compatibility guarantees of that package. For example, in Debian if you need
libsecp256k1 1.2.3, make sure your package requires a version strictly>= 1.2.3 << 1.2.4. Note
also that unless you're packaging the library for an official repository you should prefix your
package and the library with a string specific to you. E.g. if you have a set of packages called
my-awesome-packages you should package libsecp256k1 as libmy-awesome-packages-secp256k1 and
depend on that library/package name from your application.
If you want to compile this library without using the bundled symbols (which may be required for
integration into other build systems), you can do so by adding --cfg=rust_secp_no_symbol_renaming'
to your RUSTFLAGS variable.
Minimum Supported Rust Version
This library should always compile with any combination of features on Rust 1.48.0.