fn main() {
#[cfg(feature = "asm")]
if std::env::consts::ARCH != "x86_64" {
eprintln!("Currently feature `asm` can only be enabled on x86_64 arch.");
std::process::exit(1);
}
#[cfg(feature = "bn256-table")]
{
if std::path::Path::new("src/bn256/fr/table.rs").exists() {
eprintln!("Pre-computed table for BN256 scalar field exists.");
eprintln!("Skip pre-computation\n");
} else {
eprintln!("Generating pre-computed table for BN256 scalar field\n");
std::process::Command::new("python3")
.args(["script/bn256.py"])
.output()
.expect("requires python 3 to build pre-computed table");
}
}
}