servicepoint/servicepoint-binding-c
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generate header by running cbindgen directly

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This commit is contained in:
Vinzenz Schroeter 2025-06-16 22:03:57 +02:00
parent 02f629c68b
commit f524038625
3 changed files with 1 additions and 58 deletions
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1
Cargo.toml
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@ -8,7 +8,6 @@ description = "C bindings for the servicepoint crate."
homepage = "https://docs.rs/crate/servicepoint_binding_c"
repository = "https://git.berlin.ccc.de/servicepoint/servicepoint"
readme = "README.md"
links = "servicepoint"
keywords = ["cccb", "cccb-servicepoint", "cbindgen"]
[lib]

56
build.rs
View file

@ -1,56 +0,0 @@
//! Build script generating the header for the `servicepoint` C library.
//!
//! When the environment variable `SERVICEPOINT_HEADER_OUT` is set, the header is copied there from
//! the out directory. This can be used to use the build script as a command line tool from other
//! build tools.
use std::{env, fs};
fn main() {
let crate_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
let is_recursive = env::var("SERVICEPOINT_IS_BUILDING")
.unwrap_or("".to_string())
== "true";
unsafe {
env::set_var("SERVICEPOINT_IS_BUILDING", "true");
}
println!("cargo::rerun-if-changed={crate_dir}/src");
println!("cargo::rerun-if-changed={crate_dir}/build.rs");
println!("cargo::rerun-if-changed={crate_dir}/Cargo.toml");
println!("cargo::rerun-if-changed={crate_dir}/Cargo.lock");
println!("cargo::rerun-if-changed={crate_dir}/cbindgen.toml");
println!("cargo::rerun-if-env-changed=SERVICEPOINT_HEADER_OUT");
let config =
cbindgen::Config::from_file(crate_dir.clone() + "/cbindgen.toml")
.unwrap();
let output_dir = &env::var("OUT_DIR").unwrap();
let header_file = output_dir.clone() + "/servicepoint.h";
let bindings = cbindgen::generate_with_config(crate_dir, config)
.expect("Servicepoint header could not be generated");
bindings.write_to_file(&header_file);
println!("cargo:include={output_dir}");
if is_recursive {
return;
}
if let Ok(header_out) = env::var("SERVICEPOINT_HEADER_OUT") {
if !fs::exists(&header_out).unwrap() {
panic!(
"SERVICEPOINT_HEADER_OUT is not set to an existing directory"
);
}
let header_copy = header_out + "/servicepoint.h";
println!("cargo:warning=Copying header to {header_copy}");
fs::copy(header_file, &header_copy)
.expect("header could not be copied to SERVICEPOINT_HEADER_OUT");
println!("cargo::rerun-if-changed={header_copy}");
}
}

2
generate-binding.sh
View file

@ -3,4 +3,4 @@ set -e
SCRIPT_PATH="$( cd -- "$(dirname "$0")" >/dev/null 2>&1 ; pwd -P )"
SERVICEPOINT_HEADER_OUT="$SCRIPT_PATH/include" cargo build --release
cbindgen --config $SCRIPT_PATH/cbindgen.toml --crate servicepoint_binding_c --output $SCRIPT_PATH/include/servicepoint.h