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[AVR] Remove unnecessary arguments passed to the linker for GNU target

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In general, linking with libc is not required, only libgcc is needed.
As suggested in the code review, a better option for libc support is by
building it into rust-lang/libc directly.

This also removes the '-Os' argument to the linker, which is a NOP.
This commit is contained in:
Dylan McKay 2020-07-31 03:57:20 +12:00
parent d785f9ba76
commit 53b940c74c
1 changed files with 3 additions and 4 deletions
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7
src/librustc_target/spec/avr_gnu_base.rs
View file

@ -19,13 +19,12 @@ pub fn target(target_cpu: String) -> TargetResult {
cpu: target_cpu.clone(),
exe_suffix: ".elf".to_string(),
linker: Some("avr-gcc".to_owned()),
pre_link_args: vec![(
LinkerFlavor::Gcc,
vec!["-Os".to_owned(), format!("-mmcu={}", target_cpu)],
pre_link_args: vec![(LinkerFlavor::Gcc,
vec![format!("-mmcu={}", target_cpu)],
)]
.into_iter()
.collect(),
late_link_args: vec![(LinkerFlavor::Gcc, vec!["-lc".to_owned(), "-lgcc".to_owned()])]
late_link_args: vec![(LinkerFlavor::Gcc, vec!["-lgcc".to_owned()])]
.into_iter()
.collect(),
..super::freestanding_base::opts()