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// build.rs
use cc::Build;
use std::env;
use std::path::PathBuf;
fn secp256k1_build() {
// Actual build
let mut base_config = cc::Build::new();
base_config
.include("nostrdb/deps/secp256k1/")
.include("nostrdb/deps/secp256k1/include")
.include("nostrdb/deps/secp256k1/src")
.flag_if_supported("-Wno-unused-function") // some ecmult stuff is defined but not used upstream
.flag_if_supported("-Wno-unused-parameter") // patching out printf causes this warning
//.define("SECP256K1_API", Some(""))
.define("ENABLE_MODULE_ECDH", Some("1"))
.define("ENABLE_MODULE_SCHNORRSIG", Some("1"))
.define("ENABLE_MODULE_EXTRAKEYS", Some("1"));
//.define("ENABLE_MODULE_ELLSWIFT", Some("1"))
// upstream sometimes introduces calls to printf, which we cannot compile
// with WASM due to its lack of libc. printf is never necessary and we can
// just #define it away.
//.define("printf(...)", Some(""));
//if cfg!(feature = "lowmemory") {
// base_config.define("ECMULT_WINDOW_SIZE", Some("4")); // A low-enough value to consume negligible memory
// base_config.define("ECMULT_GEN_PREC_BITS", Some("2"));
//} else {
// base_config.define("ECMULT_GEN_PREC_BITS", Some("4"));
// base_config.define("ECMULT_WINDOW_SIZE", Some("15")); // This is the default in the configure file (`auto`)
//}
//base_config.define("USE_EXTERNAL_DEFAULT_CALLBACKS", Some("1"));
//#[cfg(feature = "recovery")]
//base_config.define("ENABLE_MODULE_RECOVERY", Some("1"));
// WASM headers and size/align defines.
if env::var("CARGO_CFG_TARGET_ARCH").unwrap() == "wasm32" {
base_config.include("wasm/wasm-sysroot").file("wasm/wasm.c");
}
// secp256k1
base_config
.file("nostrdb/deps/secp256k1/contrib/lax_der_parsing.c")
.file("nostrdb/deps/secp256k1/src/precomputed_ecmult_gen.c")
.file("nostrdb/deps/secp256k1/src/precomputed_ecmult.c")
.file("nostrdb/deps/secp256k1/src/secp256k1.c");
if base_config.try_compile("libsecp256k1.a").is_err() {
// Some embedded platforms may not have, eg, string.h available, so if the build fails
// simply try again with the wasm sysroot (but without the wasm type sizes) in the hopes
// that it works.
base_config.include("wasm/wasm-sysroot");
base_config.compile("libsecp256k1.a");
}
}
fn main() {
// Compile the C file
let mut build = Build::new();
build
.files([
"nostrdb/nostrdb.c",
"nostrdb/sha256.c",
"nostrdb/bech32.c",
"nostrdb/deps/flatcc/src/runtime/json_parser.c",
"nostrdb/deps/flatcc/src/runtime/verifier.c",
"nostrdb/deps/flatcc/src/runtime/builder.c",
"nostrdb/deps/flatcc/src/runtime/emitter.c",
"nostrdb/deps/flatcc/src/runtime/refmap.c",
"nostrdb/deps/lmdb/mdb.c",
"nostrdb/deps/lmdb/midl.c",
])
.include("nostrdb/deps/lmdb")
.include("nostrdb/deps/flatcc/include")
.include("nostrdb/deps/secp256k1/include")
// Add other include paths
//.flag("-Wall")
.flag("-Wno-misleading-indentation")
.flag("-Wno-unused-function")
//.flag("-Werror")
//.flag("-g")
.compile("libnostrdb.a");
secp256k1_build();
// Re-run the build script if any of the C files or headers change
for file in &[
"nostrdb/nostrdb.c",
"nostrdb/sha256.c",
"nostrdb/bech32.c",
"nostrdb/nostrdb.h",
"nostrdb/sha256.h",
] {
println!("cargo:rerun-if-changed={}", file);
}
println!("cargo:rustc-link-lib=secp256k1");
// Print out the path to the compiled library
let out_path = PathBuf::from(env::var("OUT_DIR").unwrap());
println!("cargo:rustc-link-search=native={}", out_path.display());
println!("cargo:rustc-link-lib=static=nostrdb");
//
// We only need bindgen when we update the bindings.
// I don't want to complicate the build with it.
//
/*
let bindings = bindgen::Builder::default()
.header("nostrdb/nostrdb.h")
.generate()
.expect("Unable to generate bindings");
bindings
.write_to_file("src/bindings.rs")
.expect("Couldn't write bindings!");
*/
}