1 use crate::spec::{LinkArgs, LinkerFlavor, TargetOptions};
2 use std::default::Default;
4 pub fn opts() -> TargetOptions {
5 let mut pre_link_args = LinkArgs::new();
6 pre_link_args.insert(LinkerFlavor::Gcc, vec![
7 // Tell GCC to avoid linker plugins, because we are not bundling
8 // them with Windows installer, and Rust does its own LTO anyways.
9 "-fno-use-linker-plugin".to_string(),
11 // Always enable DEP (NX bit) when it is available
12 "-Wl,--nxcompat".to_string(),
14 // Do not use the standard system startup files or libraries when linking
15 "-nostdlib".to_string(),
18 let mut late_link_args = LinkArgs::new();
19 late_link_args.insert(LinkerFlavor::Gcc, vec![
20 "-lmingwex".to_string(),
21 "-lmingw32".to_string(),
22 "-lgcc".to_string(), // alas, mingw* libraries above depend on libgcc
23 "-lmsvcrt".to_string(),
24 // mingw's msvcrt is a weird hybrid import library and static library.
25 // And it seems that the linker fails to use import symbols from msvcrt
26 // that are required from functions in msvcrt in certain cases. For example
27 // `_fmode` that is used by an implementation of `__p__fmode` in x86_64.
28 // Listing the library twice seems to fix that, and seems to also be done
29 // by mingw's gcc (Though not sure if it's done on purpose, or by mistake).
31 // See https://github.com/rust-lang/rust/pull/47483
32 "-lmsvcrt".to_string(),
33 "-luser32".to_string(),
34 "-lkernel32".to_string(),
38 // FIXME(#13846) this should be enabled for windows
39 function_sections: false,
40 linker: Some("gcc".to_string()),
41 dynamic_linking: true,
43 dll_prefix: String::new(),
44 dll_suffix: ".dll".to_string(),
45 exe_suffix: ".exe".to_string(),
46 staticlib_prefix: String::new(),
47 staticlib_suffix: ".lib".to_string(),
48 no_default_libraries: true,
49 target_family: Some("windows".to_string()),
50 is_like_windows: true,
51 allows_weak_linkage: false,
53 pre_link_objects_exe: vec![
54 "crt2.o".to_string(), // mingw C runtime initialization for executables
55 "rsbegin.o".to_string(), // Rust compiler runtime initialization, see rsbegin.rs
57 pre_link_objects_dll: vec![
58 "dllcrt2.o".to_string(), // mingw C runtime initialization for dlls
59 "rsbegin.o".to_string(),
62 post_link_objects: vec![
65 custom_unwind_resume: true,
66 abi_return_struct_as_int: true,
67 emit_debug_gdb_scripts: false,
68 requires_uwtable: true,