fn main() {

#[cfg(feature = "c-reference")]

build_misa77();

}

#[cfg(feature = "c-reference")]

fn build_misa77() {

let vendor = "vendor/misa77";

let mut base = cc::Build::new();

base.cpp(true)

.std("c++20")

.opt_level(3)

.include(format!("{vendor}/include"))

.include(format!("{vendor}/src"))

.warnings(false);

let arch = std::env::var("CARGO_CFG_TARGET_ARCH").unwrap_or_default();

if arch == "x86_64" {

// Portable TU (no special flags)

let mut portable = base.clone();

portable

.file(format!("{vendor}/src/isa/target_portable.cpp"))

.compile("misa77_portable");

// SSE2 TU (baseline on x86-64)

let mut sse2 = base.clone();

sse2.flag("-msse2")

.file(format!("{vendor}/src/isa/target_sse2.cpp"))

.compile("misa77_sse2");

// AVX2 TU

let mut avx2 = base.clone();

avx2.flag("-mavx2")

.file(format!("{vendor}/src/isa/target_avx2.cpp"))

.compile("misa77_avx2");

} else {

// ARM64 / other: portable only

let mut portable = base.clone();

portable

.file(format!("{vendor}/src/isa/target_portable.cpp"))

.compile("misa77_portable");

}

// Main dispatch files (no special ISA flags needed)

let mut main_build = base.clone();

main_build

.file(format!("{vendor}/src/compress.cpp"))

.file(format!("{vendor}/src/decompress.cpp"))

.file("vendor/misa77_ffi.cpp")

.compile("misa77_main");

println!("cargo:rerun-if-changed=vendor/misa77_ffi.cpp");

println!("cargo:rerun-if-changed={vendor}/src");

println!("cargo:rerun-if-changed={vendor}/include");

}