use std::collections::HashMap; fn main() { let isa_substitutions = HashMap::from([ ("i686", "i586"), ("armv7", "arm"), ("thumbv7neon", "arm"), ("armv5te", "arm"), ("powerpc64le", "powerpc64"), ("mips64el", "mips64"), ]); let target = std::env::var("TARGET").unwrap(); let isa = target.split("-").next().unwrap(); let seq_isa = if let Some(substitution) = isa_substitutions.get(&isa) { substitution } else { isa }; let file = format!( "seq-{}.{}", seq_isa, if target.contains("msvc") { "asm" } else { "S" } ); cc::Build::new().file(file).compile("calcmhz"); }