72 lines
2.6 KiB
Rust
72 lines
2.6 KiB
Rust
// Bitcoin secp256k1 bindings
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// Written in 2015 by
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// Andrew Poelstra
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//
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// To the extent possible under law, the author(s) have dedicated all
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// copyright and related and neighboring rights to this software to
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// the public domain worldwide. This software is distributed without
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// any warranty.
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//
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// You should have received a copy of the CC0 Public Domain Dedication
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// along with this software.
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// If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
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//
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//! # Build script
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// Coding conventions
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#![deny(non_upper_case_globals)]
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#![deny(non_camel_case_types)]
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#![deny(non_snake_case)]
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#![deny(unused_mut)]
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#![warn(missing_docs)]
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extern crate cc;
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use std::env;
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fn main() {
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// Actual build
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let mut base_config = cc::Build::new();
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base_config.include("depend/secp256k1/")
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.include("depend/secp256k1/include")
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.include("depend/secp256k1/src")
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.flag_if_supported("-Wno-unused-function") // some ecmult stuff is defined but not used upstream
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.define("SECP256K1_API", Some(""))
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.define("ENABLE_MODULE_ECDH", Some("1"))
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.define("ENABLE_MODULE_SCHNORRSIG", Some("1"))
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.define("ENABLE_MODULE_EXTRAKEYS", Some("1"));
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if cfg!(feature = "lowmemory") {
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base_config.define("ECMULT_WINDOW_SIZE", Some("4")); // A low-enough value to consume negligible memory
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base_config.define("ECMULT_GEN_PREC_BITS", Some("2"));
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} else {
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base_config.define("ECMULT_GEN_PREC_BITS", Some("4"));
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base_config.define("ECMULT_WINDOW_SIZE", Some("15")); // This is the default in the configure file (`auto`)
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}
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base_config.define("USE_EXTERNAL_DEFAULT_CALLBACKS", Some("1"));
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#[cfg(feature = "recovery")]
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base_config.define("ENABLE_MODULE_RECOVERY", Some("1"));
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// WASM headers and size/align defines.
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if env::var("CARGO_CFG_TARGET_ARCH").unwrap() == "wasm32" {
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base_config.include("wasm/wasm-sysroot")
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.file("wasm/wasm.c");
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}
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// secp256k1
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base_config.file("depend/secp256k1/contrib/lax_der_parsing.c")
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.file("depend/secp256k1/src/precomputed_ecmult_gen.c")
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.file("depend/secp256k1/src/precomputed_ecmult.c")
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.file("depend/secp256k1/src/secp256k1.c");
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if base_config.try_compile("libsecp256k1.a").is_err() {
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// Some embedded platforms may not have, eg, string.h available, so if the build fails
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// simply try again with the wasm sysroot (but without the wasm type sizes) in the hopes
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// that it works.
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base_config.include("wasm/wasm-sysroot");
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base_config.compile("libsecp256k1.a");
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}
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}
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