mirror of
https://github.com/fluencelabs/wasmer
synced 2024-12-13 06:15:33 +00:00
7c56d893c2
This patch changes the directory where the C header files are generated, from `CARGO_MANIFEST_DIR` to `OUT_DIR`. The goal is: When `wasm-runtime-c-api` is used as a dependency of another Rust project, then the C header files are accessible in the `target/` directory (i.e. the `OUT_DIR`). Also, since `rustc` has a `--out-dir` directory, it increases the flexibility of this approach: The user can generate the C header files where she wants.
46 lines
1.3 KiB
Rust
46 lines
1.3 KiB
Rust
#[cfg(feature = "generate-c-api-headers")]
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extern crate cbindgen;
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use std::{env, path::Path};
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static CAPI_ENV_VAR: &str = "WASM_EMSCRIPTEN_GENERATE_C_API_HEADERS";
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fn main() {
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if env::var(CAPI_ENV_VAR).unwrap_or("0".to_string()) == "1" {
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build();
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}
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}
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#[cfg(feature = "generate-c-api-headers")]
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fn build() {
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let crate_dir = env::var("CARGO_MANIFEST_DIR").unwrap();
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let out_dir = env::var("OUT_DIR").unwrap();
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let out_path = Path::new(&out_dir);
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let mut wasmer_h = out_path.to_path_buf();
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wasmer_h.push("wasmer.h");
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let mut wasmer_hh = out_path.to_path_buf();
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wasmer_hh.push("wasmer.hh");
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use cbindgen::Language;
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cbindgen::Builder::new()
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.with_crate(crate_dir.clone())
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.with_language(Language::C)
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.with_include_guard("WASMER_H")
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.generate()
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.expect("Unable to generate C bindings")
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.write_to_file(wasmer_h);
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cbindgen::Builder::new()
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.with_crate(crate_dir)
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.with_language(Language::Cxx)
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.with_include_guard("WASMER_H")
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.generate()
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.expect("Unable to generate C++ bindings")
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.write_to_file(wasmer_hh);
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}
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#[cfg(not(feature = "generate-c-api-headers"))]
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fn build() {
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panic!("environment var set to generate wasmer c API headers but generate-c-api-headers feature not enabled")
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}
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