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extern crate autocfg;
use std::env;
fn main() {
let ac = autocfg::new();
// If the "i128" feature is explicity requested, don't bother probing for it.
// It will still cause a build error if that was set improperly.
if env::var_os("CARGO_FEATURE_I128").is_some() || ac.probe_type("i128") {
autocfg::emit("has_i128");
}
ac.emit_expression_cfg(
"unsafe { 1f64.to_int_unchecked::<i32>() }",
"has_to_int_unchecked",
);
ac.emit_expression_cfg("1u32.reverse_bits()", "has_reverse_bits");
ac.emit_expression_cfg("1u32.trailing_ones()", "has_leading_trailing_ones");
ac.emit_expression_cfg("{ let mut x = 1; x += &2; }", "has_int_assignop_ref");
ac.emit_expression_cfg("1u32.div_euclid(1u32)", "has_div_euclid");
if env::var_os("CARGO_FEATURE_STD").is_some() {
ac.emit_expression_cfg("1f64.copysign(-1f64)", "has_copysign");
}
autocfg::rerun_path("build.rs");
}