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Commit | Line | Data |
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f9f354fc | 1 | use crate::spec::crt_objects::{self, CrtObjectsFallback}; |
3dfed10e | 2 | use crate::spec::{LinkArgs, LinkerFlavor, LldFlavor, TargetOptions}; |
1a4d82fc JJ |
3 | |
4 | pub fn opts() -> TargetOptions { | |
cc61c64b | 5 | let mut pre_link_args = LinkArgs::new(); |
dfeec247 XL |
6 | pre_link_args.insert( |
7 | LinkerFlavor::Gcc, | |
8 | vec![ | |
1a4d82fc JJ |
9 | // Tell GCC to avoid linker plugins, because we are not bundling |
10 | // them with Windows installer, and Rust does its own LTO anyways. | |
11 | "-fno-use-linker-plugin".to_string(), | |
fc512014 XL |
12 | // Enable ASLR |
13 | "-Wl,--dynamicbase".to_string(), | |
14 | // ASLR will rebase it anyway so leaving that option enabled only leads to confusion | |
15 | "-Wl,--disable-auto-image-base".to_string(), | |
dfeec247 XL |
16 | ], |
17 | ); | |
cc61c64b XL |
18 | |
19 | let mut late_link_args = LinkArgs::new(); | |
ba9703b0 XL |
20 | let mut late_link_args_dynamic = LinkArgs::new(); |
21 | let mut late_link_args_static = LinkArgs::new(); | |
f035d41b XL |
22 | // Order of `late_link_args*` was found through trial and error to work with various |
23 | // mingw-w64 versions (not tested on the CI). It's expected to change from time to time. | |
3dfed10e XL |
24 | let mingw_libs = vec![ |
25 | "-lmsvcrt".to_string(), | |
26 | "-lmingwex".to_string(), | |
27 | "-lmingw32".to_string(), | |
1b1a35ee | 28 | "-lgcc".to_string(), // alas, mingw* libraries above depend on libgcc |
3dfed10e XL |
29 | // mingw's msvcrt is a weird hybrid import library and static library. |
30 | // And it seems that the linker fails to use import symbols from msvcrt | |
31 | // that are required from functions in msvcrt in certain cases. For example | |
32 | // `_fmode` that is used by an implementation of `__p__fmode` in x86_64. | |
33 | // The library is purposely listed twice to fix that. | |
34 | // | |
35 | // See https://github.com/rust-lang/rust/pull/47483 for some more details. | |
36 | "-lmsvcrt".to_string(), | |
37 | "-luser32".to_string(), | |
38 | "-lkernel32".to_string(), | |
39 | ]; | |
40 | late_link_args.insert(LinkerFlavor::Gcc, mingw_libs.clone()); | |
41 | late_link_args.insert(LinkerFlavor::Lld(LldFlavor::Ld), mingw_libs); | |
42 | let dynamic_unwind_libs = vec![ | |
43 | // If any of our crates are dynamically linked then we need to use | |
44 | // the shared libgcc_s-dw2-1.dll. This is required to support | |
45 | // unwinding across DLL boundaries. | |
46 | "-lgcc_s".to_string(), | |
3dfed10e XL |
47 | ]; |
48 | late_link_args_dynamic.insert(LinkerFlavor::Gcc, dynamic_unwind_libs.clone()); | |
49 | late_link_args_dynamic.insert(LinkerFlavor::Lld(LldFlavor::Ld), dynamic_unwind_libs); | |
50 | let static_unwind_libs = vec![ | |
51 | // If all of our crates are statically linked then we can get away | |
52 | // with statically linking the libgcc unwinding code. This allows | |
53 | // binaries to be redistributed without the libgcc_s-dw2-1.dll | |
54 | // dependency, but unfortunately break unwinding across DLL | |
55 | // boundaries when unwinding across FFI boundaries. | |
56 | "-lgcc_eh".to_string(), | |
57 | "-l:libpthread.a".to_string(), | |
3dfed10e XL |
58 | ]; |
59 | late_link_args_static.insert(LinkerFlavor::Gcc, static_unwind_libs.clone()); | |
60 | late_link_args_static.insert(LinkerFlavor::Lld(LldFlavor::Ld), static_unwind_libs); | |
cc61c64b XL |
61 | |
62 | TargetOptions { | |
29967ef6 XL |
63 | os: "windows".to_string(), |
64 | env: "gnu".to_string(), | |
65 | vendor: "pc".to_string(), | |
cc61c64b XL |
66 | // FIXME(#13846) this should be enabled for windows |
67 | function_sections: false, | |
0531ce1d | 68 | linker: Some("gcc".to_string()), |
cc61c64b XL |
69 | dynamic_linking: true, |
70 | executables: true, | |
b7449926 | 71 | dll_prefix: String::new(), |
cc61c64b XL |
72 | dll_suffix: ".dll".to_string(), |
73 | exe_suffix: ".exe".to_string(), | |
17df50a5 | 74 | families: vec!["windows".to_string()], |
cc61c64b XL |
75 | is_like_windows: true, |
76 | allows_weak_linkage: false, | |
3b2f2976 | 77 | pre_link_args, |
f9f354fc XL |
78 | pre_link_objects: crt_objects::pre_mingw(), |
79 | post_link_objects: crt_objects::post_mingw(), | |
80 | pre_link_objects_fallback: crt_objects::pre_mingw_fallback(), | |
81 | post_link_objects_fallback: crt_objects::post_mingw_fallback(), | |
82 | crt_objects_fallback: Some(CrtObjectsFallback::Mingw), | |
3b2f2976 | 83 | late_link_args, |
ba9703b0 XL |
84 | late_link_args_dynamic, |
85 | late_link_args_static, | |
0531ce1d | 86 | abi_return_struct_as_int: true, |
83c7162d XL |
87 | emit_debug_gdb_scripts: false, |
88 | requires_uwtable: true, | |
f9652781 | 89 | eh_frame_header: false, |
1a4d82fc | 90 | |
dfeec247 | 91 | ..Default::default() |
1a4d82fc JJ |
92 | } |
93 | } |