fn main() {
    // espeak-rs-sys builds espeak-ng from source but misses linking sonic
    // and the speechPlayer audio_object symbols. piper-rs only uses
    // espeak-ng for phonemization (never audio output), so stub implementations
    // satisfy the linker without providing real functionality.

    let out_dir = std::env::var("OUT_DIR").unwrap();
    let stubs_c = format!("{}/tts_stubs.c", out_dir);
    let stubs_o = format!("{}/tts_stubs.o", out_dir);
    let stubs_a = format!("{}/libtts_stubs.a", out_dir);

    std::fs::write(
        &stubs_c,
        r#"
#include <stddef.h>
typedef void* sonicStream;
sonicStream sonicCreateStream(int sampleRate, int channels) { return NULL; }
void sonicDestroyStream(sonicStream s) {}
void sonicSetSpeed(sonicStream s, float speed) {}
float sonicGetSpeed(sonicStream s) { return 1.0f; }
void sonicWriteShortToStream(sonicStream s, const short *samples, int n) {}
int sonicReadShortFromStream(sonicStream s, short *samples, int n) { return 0; }
void sonicFlushStream(sonicStream s) {}
typedef void* audio_object_t;
int audio_object_open(audio_object_t o) { return 0; }
int audio_object_write(audio_object_t o, const void *buf, size_t n) { return (int)n; }
int audio_object_close(audio_object_t o) { return 0; }
int audio_object_flush(audio_object_t o) { return 0; }
int audio_object_drain(audio_object_t o) { return 0; }
const char* audio_object_strerror(audio_object_t o, int err) { return "stub"; }
audio_object_t create_audio_device_object(void* d, const char* device) { return NULL; }
"#,
    )
    .expect("write stubs");

    // cc -c
    let status = std::process::Command::new("cc")
        .args(["-c", &stubs_c, "-o", &stubs_o])
        .status()
        .expect("run cc");
    assert!(status.success(), "cc -c failed");

    // ar rcs
    let status = std::process::Command::new("ar")
        .args(["rcs", &stubs_a, &stubs_o])
        .status()
        .expect("run ar");
    assert!(status.success(), "ar rcs failed");

    println!("cargo:rustc-link-search=native={}", out_dir);
    println!("cargo:rustc-link-lib=static=tts_stubs");
}