Add basic Rust bindings

.bumpversion.cfg

@@ -24,3 +24,6 @@ serialize = {major}
 search = EVMC_ABI_VERSION = {current_version}
 replace = EVMC_ABI_VERSION = {new_version}
 
+[bumpversion:file:bindings/rust/Cargo.toml]
+search = version = \"{current_version}\"
+

bindings/rust/.gitignore

@@ -0,0 +1,3 @@
+/target
+**/*.rs.bk
+/Cargo.lock

bindings/rust/Cargo.toml

@@ -0,0 +1,12 @@
+[package]
+name = "evmc-sys"
+version = "6.2.0-dev"
+authors = ["Alex Beregszaszi <alex@rtfs.hu>"]
+license = "Apache-2.0"
+repository = "https://github.com/ethereum/evmc"
+description = "Bindings to EVMC (low-level)"
+categories = ["external-ffi-bindings"]
+edition = "2018"
+
+[build-dependencies]
+bindgen = "0.48.0"

bindings/rust/build.rs

@@ -0,0 +1,25 @@
+extern crate bindgen;
+
+use std::env;
+use std::path::PathBuf;
+
+fn gen_bindings() {
+    let bindings = bindgen::Builder::default()
+        .header("evmc.h")
+        // See https://github.com/rust-lang-nursery/rust-bindgen/issues/947
+        .trust_clang_mangling(false)
+        .generate_comments(true)
+        // https://github.com/rust-lang-nursery/rust-bindgen/issues/947#issuecomment-327100002
+        .layout_tests(false)
+        .generate()
+        .expect("Unable to generate bindings");
+
+    let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
+    bindings
+        .write_to_file(out_path.join("bindings.rs"))
+        .expect("Couldn't write bindings!");
+}
+
+fn main() {
+    gen_bindings();
+}

bindings/rust/evmc.h

@@ -0,0 +1 @@
+../../include/evmc/evmc.h

bindings/rust/src/lib.rs

@@ -0,0 +1,5 @@
+#![allow(non_upper_case_globals)]
+#![allow(non_camel_case_types)]
+#![allow(non_snake_case)]
+
+include!(concat!(env!("OUT_DIR"), "/bindings.rs"));