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use crate::spec::{LinkerFlavor, Target, TargetOptions, TargetResult};
/// A base target for AVR devices using the GNU toolchain.
///
/// Requires GNU avr-gcc and avr-binutils on the host system.
pub fn target(target_cpu: String) -> TargetResult {
Ok(Target {
arch: "avr".to_string(),
data_layout: "e-P1-p:16:8-i8:8-i16:8-i32:8-i64:8-f32:8-f64:8-n8-a:8".to_string(),
llvm_target: "avr-unknown-unknown".to_string(),
target_endian: "little".to_string(),
target_pointer_width: "16".to_string(),
linker_flavor: LinkerFlavor::Gcc,
target_os: "unknown".to_string(),
target_env: "".to_string(),
target_vendor: "unknown".to_string(),
target_c_int_width: 16.to_string(),
options: TargetOptions {
cpu: target_cpu.clone(),
exe_suffix: ".elf".to_string(),
linker: Some("avr-gcc".to_owned()),
dynamic_linking: false,
executables: true,
linker_is_gnu: true,
has_rpath: false,
position_independent_executables: false,
eh_frame_header: false,
pre_link_args: vec![(
LinkerFlavor::Gcc,
vec![
format!("-mmcu={}", target_cpu),
// We want to be able to strip as much executable code as possible
// from the linker command line, and this flag indicates to the
// linker that it can avoid linking in dynamic libraries that don't
// actually satisfy any symbols up to that point (as with many other
// resolutions the linker does). This option only applies to all
// following libraries so we're sure to pass it as one of the first
// arguments.
"-Wl,--as-needed".to_string(),
],
)]
.into_iter()
.collect(),
late_link_args: vec![(LinkerFlavor::Gcc, vec!["-lgcc".to_owned()])]
.into_iter()
.collect(),
max_atomic_width: Some(0),
atomic_cas: false,
..TargetOptions::default()
},
})
}
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