rustc_target/spec/
json.rs

1use std::collections::BTreeMap;
2use std::str::FromStr;
3
4use rustc_abi::{Align, AlignFromBytesError};
5
6use super::crt_objects::CrtObjects;
7use super::{
8    Abi, Arch, BinaryFormat, CodeModel, DebuginfoKind, Env, FloatAbi, FramePointer, LinkArgsCli,
9    LinkSelfContainedComponents, LinkSelfContainedDefault, LinkerFlavorCli, LldFlavor,
10    MergeFunctions, Os, PanicStrategy, RelocModel, RelroLevel, RustcAbi, SanitizerSet,
11    SmallDataThresholdSupport, SplitDebuginfo, StackProbeType, StaticCow, SymbolVisibility, Target,
12    TargetKind, TargetOptions, TargetWarnings, TlsModel,
13};
14use crate::json::{Json, ToJson};
15use crate::spec::AbiMap;
16
17impl Target {
18    /// Loads a target descriptor from a JSON object.
19    pub fn from_json(json: &str) -> Result<(Target, TargetWarnings), String> {
20        let json_deserializer = &mut serde_json::Deserializer::from_str(json);
21
22        let json: TargetSpecJson =
23            serde_path_to_error::deserialize(json_deserializer).map_err(|err| err.to_string())?;
24
25        let mut base = Target {
26            llvm_target: json.llvm_target,
27            metadata: Default::default(),
28            pointer_width: json.target_pointer_width,
29            data_layout: json.data_layout,
30            arch: json.arch,
31            options: Default::default(),
32        };
33
34        // FIXME: This doesn't properly validate anything and just ignores the data if it's invalid.
35        // That's okay for now, the only use of this is when generating docs, which we don't do for
36        // custom targets.
37        if let Some(metadata) = json.metadata {
38            base.metadata.description = metadata.description;
39            base.metadata.tier = metadata.tier.filter(|tier| (1..=3).contains(tier));
40            base.metadata.host_tools = metadata.host_tools;
41            base.metadata.std = metadata.std;
42        }
43
44        let alignment_error = |field_name: &str, error: AlignFromBytesError| -> String {
45            let msg = match error {
46                AlignFromBytesError::NotPowerOfTwo(_) => "not a power of 2 number of bytes",
47                AlignFromBytesError::TooLarge(_) => "too large",
48            };
49            format!("`{}` bits is not a valid value for {field_name}: {msg}", error.align() * 8)
50        };
51
52        macro_rules! forward {
53            ($name:ident) => {
54                if let Some($name) = json.$name {
55                    base.$name = $name;
56                }
57            };
58        }
59        macro_rules! forward_opt {
60            ($name:ident) => {
61                if let Some($name) = json.$name {
62                    base.$name = Some($name);
63                }
64            };
65        }
66
67        if let Some(target_endian) = json.target_endian {
68            base.endian = target_endian.0;
69        }
70
71        forward!(frame_pointer);
72        forward!(c_int_width);
73        forward_opt!(c_enum_min_bits); // if None, matches c_int_width
74        forward!(os);
75        forward!(env);
76        forward!(abi);
77        forward!(vendor);
78        forward_opt!(linker);
79        forward!(linker_flavor_json);
80        forward!(lld_flavor_json);
81        forward!(linker_is_gnu_json);
82        forward!(pre_link_objects);
83        forward!(post_link_objects);
84        forward!(pre_link_objects_self_contained);
85        forward!(post_link_objects_self_contained);
86
87        // Deserializes the backwards-compatible variants of `-Clink-self-contained`
88        if let Some(link_self_contained) = json.link_self_contained_backwards_compatible {
89            base.link_self_contained = link_self_contained;
90        }
91        // Deserializes the components variant of `-Clink-self-contained`
92        if let Some(link_self_contained) = json.link_self_contained {
93            let components = link_self_contained
94                .components
95                .into_iter()
96                .fold(LinkSelfContainedComponents::empty(), |a, b| a | b);
97            base.link_self_contained = LinkSelfContainedDefault::WithComponents(components);
98        }
99
100        forward!(pre_link_args_json);
101        forward!(late_link_args_json);
102        forward!(late_link_args_dynamic_json);
103        forward!(late_link_args_static_json);
104        forward!(post_link_args_json);
105        forward_opt!(link_script);
106
107        if let Some(link_env) = json.link_env {
108            for s in link_env {
109                if let [k, v] = *s.split('=').collect::<Vec<_>>() {
110                    base.link_env.to_mut().push((k.to_string().into(), v.to_string().into()))
111                } else {
112                    return Err(format!("link-env value '{s}' must be of the pattern 'KEY=VALUE'"));
113                }
114            }
115        }
116
117        forward!(link_env_remove);
118        forward!(asm_args);
119        forward!(cpu);
120        forward!(need_explicit_cpu);
121        forward!(features);
122        forward!(dynamic_linking);
123        forward_opt!(direct_access_external_data);
124        forward!(dll_tls_export);
125        forward!(only_cdylib);
126        forward!(executables);
127        forward!(relocation_model);
128        forward_opt!(code_model);
129        forward!(tls_model);
130        forward!(disable_redzone);
131        forward!(function_sections);
132        forward!(dll_prefix);
133        forward!(dll_suffix);
134        forward!(exe_suffix);
135        forward!(staticlib_prefix);
136        forward!(staticlib_suffix);
137
138        if let Some(target_family) = json.target_family {
139            match target_family {
140                TargetFamiliesJson::Array(families) => base.families = families,
141                TargetFamiliesJson::String(family) => base.families = vec![family].into(),
142            }
143        }
144
145        forward!(abi_return_struct_as_int);
146        forward!(is_like_aix);
147        forward!(is_like_darwin);
148        forward!(is_like_solaris);
149        forward!(is_like_windows);
150        forward!(is_like_gpu);
151        forward!(is_like_msvc);
152        forward!(is_like_wasm);
153        forward!(is_like_android);
154        forward!(is_like_vexos);
155        forward!(binary_format);
156        forward!(default_dwarf_version);
157        forward!(allows_weak_linkage);
158        forward!(has_rpath);
159        forward!(no_default_libraries);
160        forward!(position_independent_executables);
161        forward!(static_position_independent_executables);
162        forward!(plt_by_default);
163        forward!(relro_level);
164        forward!(archive_format);
165        forward!(allow_asm);
166        forward!(main_needs_argc_argv);
167        forward!(has_thread_local);
168        forward!(obj_is_bitcode);
169        forward_opt!(max_atomic_width);
170        forward_opt!(min_atomic_width);
171        forward!(atomic_cas);
172        forward!(panic_strategy);
173        forward!(crt_static_allows_dylibs);
174        forward!(crt_static_default);
175        forward!(crt_static_respected);
176        forward!(stack_probes);
177
178        if let Some(min_global_align) = json.min_global_align {
179            match Align::from_bits(min_global_align) {
180                Ok(align) => base.min_global_align = Some(align),
181                Err(e) => return Err(alignment_error("min-global-align", e)),
182            }
183        }
184
185        forward_opt!(default_codegen_units);
186        forward_opt!(default_codegen_backend);
187        forward!(trap_unreachable);
188        forward!(requires_lto);
189        forward!(singlethread);
190        forward!(no_builtins);
191        forward_opt!(default_visibility);
192        forward!(emit_debug_gdb_scripts);
193        forward!(requires_uwtable);
194        forward!(default_uwtable);
195        forward!(simd_types_indirect);
196        forward!(limit_rdylib_exports);
197        forward_opt!(override_export_symbols);
198        forward!(merge_functions);
199        forward!(mcount);
200        forward_opt!(llvm_mcount_intrinsic);
201        forward!(llvm_abiname);
202        forward_opt!(llvm_floatabi);
203        forward_opt!(rustc_abi);
204        forward!(relax_elf_relocations);
205        forward!(llvm_args);
206        forward!(use_ctors_section);
207        forward!(eh_frame_header);
208        forward!(has_thumb_interworking);
209        forward!(debuginfo_kind);
210        forward!(split_debuginfo);
211        forward!(supported_split_debuginfo);
212
213        if let Some(supported_sanitizers) = json.supported_sanitizers {
214            base.supported_sanitizers =
215                supported_sanitizers.into_iter().fold(SanitizerSet::empty(), |a, b| a | b);
216        }
217
218        if let Some(default_sanitizers) = json.default_sanitizers {
219            base.default_sanitizers =
220                default_sanitizers.into_iter().fold(SanitizerSet::empty(), |a, b| a | b);
221        }
222
223        forward!(generate_arange_section);
224        forward!(supports_stack_protector);
225        forward!(small_data_threshold_support);
226        forward!(entry_name);
227        forward!(supports_xray);
228
229        // we're going to run `update_from_cli`, but that won't change the target's AbiMap
230        // FIXME: better factor the Target definition so we enforce this on a type level
231        let abi_map = AbiMap::from_target(&base);
232        if let Some(entry_abi) = json.entry_abi {
233            base.options.entry_abi = abi_map.canonize_abi(entry_abi.0, false).unwrap();
234        }
235
236        base.update_from_cli();
237        base.check_consistency(TargetKind::Json)?;
238
239        Ok((base, TargetWarnings { unused_fields: vec![] }))
240    }
241}
242
243impl ToJson for Target {
244    fn to_json(&self) -> Json {
245        let mut d = serde_json::Map::new();
246        let default: TargetOptions = Default::default();
247        let mut target = self.clone();
248        target.update_to_cli();
249
250        macro_rules! target_val {
251            ($attr:ident) => {
252                target_val!($attr, (stringify!($attr)).replace("_", "-"))
253            };
254            ($attr:ident, $json_name:expr) => {{
255                let name = $json_name;
256                d.insert(name.into(), target.$attr.to_json());
257            }};
258        }
259
260        macro_rules! target_option_val {
261            ($attr:ident) => {{ target_option_val!($attr, (stringify!($attr)).replace("_", "-")) }};
262            ($attr:ident, $json_name:expr) => {{
263                let name = $json_name;
264                #[allow(rustc::bad_opt_access)]
265                if default.$attr != target.$attr {
266                    d.insert(name.into(), target.$attr.to_json());
267                }
268            }};
269            (link_args - $attr:ident, $json_name:expr) => {{
270                let name = $json_name;
271                if default.$attr != target.$attr {
272                    let obj = target
273                        .$attr
274                        .iter()
275                        .map(|(k, v)| (k.desc().to_string(), v.clone()))
276                        .collect::<BTreeMap<_, _>>();
277                    d.insert(name.to_string(), obj.to_json());
278                }
279            }};
280            (env - $attr:ident) => {{
281                let name = (stringify!($attr)).replace("_", "-");
282                if default.$attr != target.$attr {
283                    let obj = target
284                        .$attr
285                        .iter()
286                        .map(|&(ref k, ref v)| format!("{k}={v}"))
287                        .collect::<Vec<_>>();
288                    d.insert(name, obj.to_json());
289                }
290            }};
291        }
292
293        target_val!(llvm_target);
294        target_val!(metadata);
295        target_val!(pointer_width, "target-pointer-width");
296        target_val!(arch);
297        target_val!(data_layout);
298
299        target_option_val!(endian, "target-endian");
300        target_option_val!(c_int_width, "target-c-int-width");
301        target_option_val!(os);
302        target_option_val!(env);
303        target_option_val!(abi);
304        target_option_val!(vendor);
305        target_option_val!(linker);
306        target_option_val!(linker_flavor_json, "linker-flavor");
307        target_option_val!(lld_flavor_json, "lld-flavor");
308        target_option_val!(linker_is_gnu_json, "linker-is-gnu");
309        target_option_val!(pre_link_objects);
310        target_option_val!(post_link_objects);
311        target_option_val!(pre_link_objects_self_contained, "pre-link-objects-fallback");
312        target_option_val!(post_link_objects_self_contained, "post-link-objects-fallback");
313        target_option_val!(link_args - pre_link_args_json, "pre-link-args");
314        target_option_val!(link_args - late_link_args_json, "late-link-args");
315        target_option_val!(link_args - late_link_args_dynamic_json, "late-link-args-dynamic");
316        target_option_val!(link_args - late_link_args_static_json, "late-link-args-static");
317        target_option_val!(link_args - post_link_args_json, "post-link-args");
318        target_option_val!(link_script);
319        target_option_val!(env - link_env);
320        target_option_val!(link_env_remove);
321        target_option_val!(asm_args);
322        target_option_val!(cpu);
323        target_option_val!(need_explicit_cpu);
324        target_option_val!(features);
325        target_option_val!(dynamic_linking);
326        target_option_val!(direct_access_external_data);
327        target_option_val!(dll_tls_export);
328        target_option_val!(only_cdylib);
329        target_option_val!(executables);
330        target_option_val!(relocation_model);
331        target_option_val!(code_model);
332        target_option_val!(tls_model);
333        target_option_val!(disable_redzone);
334        target_option_val!(frame_pointer);
335        target_option_val!(function_sections);
336        target_option_val!(dll_prefix);
337        target_option_val!(dll_suffix);
338        target_option_val!(exe_suffix);
339        target_option_val!(staticlib_prefix);
340        target_option_val!(staticlib_suffix);
341        target_option_val!(families, "target-family");
342        target_option_val!(abi_return_struct_as_int);
343        target_option_val!(is_like_aix);
344        target_option_val!(is_like_darwin);
345        target_option_val!(is_like_solaris);
346        target_option_val!(is_like_windows);
347        target_option_val!(is_like_gpu);
348        target_option_val!(is_like_msvc);
349        target_option_val!(is_like_wasm);
350        target_option_val!(is_like_android);
351        target_option_val!(is_like_vexos);
352        target_option_val!(binary_format);
353        target_option_val!(default_dwarf_version);
354        target_option_val!(allows_weak_linkage);
355        target_option_val!(has_rpath);
356        target_option_val!(no_default_libraries);
357        target_option_val!(position_independent_executables);
358        target_option_val!(static_position_independent_executables);
359        target_option_val!(plt_by_default);
360        target_option_val!(relro_level);
361        target_option_val!(archive_format);
362        target_option_val!(allow_asm);
363        target_option_val!(main_needs_argc_argv);
364        target_option_val!(has_thread_local);
365        target_option_val!(obj_is_bitcode);
366        target_option_val!(min_atomic_width);
367        target_option_val!(max_atomic_width);
368        target_option_val!(atomic_cas);
369        target_option_val!(panic_strategy);
370        target_option_val!(crt_static_allows_dylibs);
371        target_option_val!(crt_static_default);
372        target_option_val!(crt_static_respected);
373        target_option_val!(stack_probes);
374        target_option_val!(min_global_align);
375        target_option_val!(default_codegen_units);
376        target_option_val!(default_codegen_backend);
377        target_option_val!(trap_unreachable);
378        target_option_val!(requires_lto);
379        target_option_val!(singlethread);
380        target_option_val!(no_builtins);
381        target_option_val!(default_visibility);
382        target_option_val!(emit_debug_gdb_scripts);
383        target_option_val!(requires_uwtable);
384        target_option_val!(default_uwtable);
385        target_option_val!(simd_types_indirect);
386        target_option_val!(limit_rdylib_exports);
387        target_option_val!(override_export_symbols);
388        target_option_val!(merge_functions);
389        target_option_val!(mcount, "target-mcount");
390        target_option_val!(llvm_mcount_intrinsic);
391        target_option_val!(llvm_abiname);
392        target_option_val!(llvm_floatabi);
393        target_option_val!(rustc_abi);
394        target_option_val!(relax_elf_relocations);
395        target_option_val!(llvm_args);
396        target_option_val!(use_ctors_section);
397        target_option_val!(eh_frame_header);
398        target_option_val!(has_thumb_interworking);
399        target_option_val!(debuginfo_kind);
400        target_option_val!(split_debuginfo);
401        target_option_val!(supported_split_debuginfo);
402        target_option_val!(supported_sanitizers);
403        target_option_val!(default_sanitizers);
404        target_option_val!(c_enum_min_bits);
405        target_option_val!(generate_arange_section);
406        target_option_val!(supports_stack_protector);
407        target_option_val!(small_data_threshold_support);
408        target_option_val!(entry_name);
409        target_option_val!(entry_abi);
410        target_option_val!(supports_xray);
411
412        // Serializing `-Clink-self-contained` needs a dynamic key to support the
413        // backwards-compatible variants.
414        d.insert(self.link_self_contained.json_key().into(), self.link_self_contained.to_json());
415
416        Json::Object(d)
417    }
418}
419
420#[derive(serde_derive::Deserialize, schemars::JsonSchema)]
421struct LinkSelfContainedComponentsWrapper {
422    components: Vec<LinkSelfContainedComponents>,
423}
424
425#[derive(serde_derive::Deserialize, schemars::JsonSchema)]
426#[serde(untagged)]
427enum TargetFamiliesJson {
428    Array(StaticCow<[StaticCow<str>]>),
429    String(StaticCow<str>),
430}
431
432/// `Endian` is in `rustc_abi`, which doesn't have access to the macro and serde.
433struct EndianWrapper(rustc_abi::Endian);
434impl FromStr for EndianWrapper {
435    type Err = String;
436    fn from_str(s: &str) -> Result<Self, Self::Err> {
437        rustc_abi::Endian::from_str(s).map(Self)
438    }
439}
440crate::json::serde_deserialize_from_str!(EndianWrapper);
441impl schemars::JsonSchema for EndianWrapper {
442    fn schema_name() -> std::borrow::Cow<'static, str> {
443        "Endian".into()
444    }
445    fn json_schema(_: &mut schemars::SchemaGenerator) -> schemars::Schema {
446        schemars::json_schema! ({
447            "type": "string",
448            "enum": ["big", "little"]
449        })
450        .into()
451    }
452}
453
454/// `ExternAbi` is in `rustc_abi`, which doesn't have access to the macro and serde.
455struct ExternAbiWrapper(rustc_abi::ExternAbi);
456impl FromStr for ExternAbiWrapper {
457    type Err = String;
458    fn from_str(s: &str) -> Result<Self, Self::Err> {
459        rustc_abi::ExternAbi::from_str(s)
460            .map(Self)
461            .map_err(|_| format!("{s} is not a valid extern ABI"))
462    }
463}
464crate::json::serde_deserialize_from_str!(ExternAbiWrapper);
465impl schemars::JsonSchema for ExternAbiWrapper {
466    fn schema_name() -> std::borrow::Cow<'static, str> {
467        "ExternAbi".into()
468    }
469    fn json_schema(_: &mut schemars::SchemaGenerator) -> schemars::Schema {
470        let all =
471            rustc_abi::ExternAbi::ALL_VARIANTS.iter().map(|abi| abi.as_str()).collect::<Vec<_>>();
472        schemars::json_schema! ({
473            "type": "string",
474            "enum": all,
475        })
476        .into()
477    }
478}
479
480#[derive(serde_derive::Deserialize, schemars::JsonSchema)]
481struct TargetSpecJsonMetadata {
482    description: Option<StaticCow<str>>,
483    tier: Option<u64>,
484    host_tools: Option<bool>,
485    std: Option<bool>,
486}
487
488#[derive(serde_derive::Deserialize, schemars::JsonSchema)]
489#[serde(rename_all = "kebab-case")]
490// Ensure that all unexpected fields get turned into errors.
491// This helps users stay up to date when the schema changes instead of silently
492// ignoring their old values.
493#[serde(deny_unknown_fields)]
494struct TargetSpecJson {
495    llvm_target: StaticCow<str>,
496    target_pointer_width: u16,
497    data_layout: StaticCow<str>,
498    arch: Arch,
499
500    metadata: Option<TargetSpecJsonMetadata>,
501
502    // options:
503    target_endian: Option<EndianWrapper>,
504    frame_pointer: Option<FramePointer>,
505    #[serde(rename = "target-c-int-width")]
506    c_int_width: Option<u16>,
507    c_enum_min_bits: Option<u64>,
508    os: Option<Os>,
509    env: Option<Env>,
510    abi: Option<Abi>,
511    vendor: Option<StaticCow<str>>,
512    linker: Option<StaticCow<str>>,
513    #[serde(rename = "linker-flavor")]
514    linker_flavor_json: Option<LinkerFlavorCli>,
515    #[serde(rename = "lld-flavor")]
516    lld_flavor_json: Option<LldFlavor>,
517    #[serde(rename = "linker-is-gnu")]
518    linker_is_gnu_json: Option<bool>,
519    #[serde(rename = "pre-link-objects")]
520    pre_link_objects: Option<CrtObjects>,
521    #[serde(rename = "post-link-objects")]
522    post_link_objects: Option<CrtObjects>,
523    #[serde(rename = "pre-link-objects-fallback")]
524    pre_link_objects_self_contained: Option<CrtObjects>,
525    #[serde(rename = "post-link-objects-fallback")]
526    post_link_objects_self_contained: Option<CrtObjects>,
527    #[serde(rename = "crt-objects-fallback")]
528    link_self_contained_backwards_compatible: Option<LinkSelfContainedDefault>,
529    link_self_contained: Option<LinkSelfContainedComponentsWrapper>,
530    #[serde(rename = "pre-link-args")]
531    pre_link_args_json: Option<LinkArgsCli>,
532    #[serde(rename = "late-link-args")]
533    late_link_args_json: Option<LinkArgsCli>,
534    #[serde(rename = "late-link-args-dynamic")]
535    late_link_args_dynamic_json: Option<LinkArgsCli>,
536    #[serde(rename = "late-link-args-static")]
537    late_link_args_static_json: Option<LinkArgsCli>,
538    #[serde(rename = "post-link-args")]
539    post_link_args_json: Option<LinkArgsCli>,
540    link_script: Option<StaticCow<str>>,
541    link_env: Option<Vec<StaticCow<str>>>,
542    link_env_remove: Option<StaticCow<[StaticCow<str>]>>,
543    asm_args: Option<StaticCow<[StaticCow<str>]>>,
544    cpu: Option<StaticCow<str>>,
545    need_explicit_cpu: Option<bool>,
546    features: Option<StaticCow<str>>,
547    dynamic_linking: Option<bool>,
548    direct_access_external_data: Option<bool>,
549    dll_tls_export: Option<bool>,
550    only_cdylib: Option<bool>,
551    executables: Option<bool>,
552    relocation_model: Option<RelocModel>,
553    code_model: Option<CodeModel>,
554    tls_model: Option<TlsModel>,
555    disable_redzone: Option<bool>,
556    function_sections: Option<bool>,
557    dll_prefix: Option<StaticCow<str>>,
558    dll_suffix: Option<StaticCow<str>>,
559    exe_suffix: Option<StaticCow<str>>,
560    staticlib_prefix: Option<StaticCow<str>>,
561    staticlib_suffix: Option<StaticCow<str>>,
562    target_family: Option<TargetFamiliesJson>,
563    abi_return_struct_as_int: Option<bool>,
564    is_like_aix: Option<bool>,
565    is_like_darwin: Option<bool>,
566    is_like_solaris: Option<bool>,
567    is_like_windows: Option<bool>,
568    is_like_gpu: Option<bool>,
569    is_like_msvc: Option<bool>,
570    is_like_wasm: Option<bool>,
571    is_like_android: Option<bool>,
572    is_like_vexos: Option<bool>,
573    binary_format: Option<BinaryFormat>,
574    default_dwarf_version: Option<u32>,
575    allows_weak_linkage: Option<bool>,
576    has_rpath: Option<bool>,
577    no_default_libraries: Option<bool>,
578    position_independent_executables: Option<bool>,
579    static_position_independent_executables: Option<bool>,
580    plt_by_default: Option<bool>,
581    relro_level: Option<RelroLevel>,
582    archive_format: Option<StaticCow<str>>,
583    allow_asm: Option<bool>,
584    main_needs_argc_argv: Option<bool>,
585    has_thread_local: Option<bool>,
586    obj_is_bitcode: Option<bool>,
587    max_atomic_width: Option<u64>,
588    min_atomic_width: Option<u64>,
589    atomic_cas: Option<bool>,
590    panic_strategy: Option<PanicStrategy>,
591    crt_static_allows_dylibs: Option<bool>,
592    crt_static_default: Option<bool>,
593    crt_static_respected: Option<bool>,
594    stack_probes: Option<StackProbeType>,
595    min_global_align: Option<u64>,
596    default_codegen_units: Option<u64>,
597    default_codegen_backend: Option<StaticCow<str>>,
598    trap_unreachable: Option<bool>,
599    requires_lto: Option<bool>,
600    singlethread: Option<bool>,
601    no_builtins: Option<bool>,
602    default_visibility: Option<SymbolVisibility>,
603    emit_debug_gdb_scripts: Option<bool>,
604    requires_uwtable: Option<bool>,
605    default_uwtable: Option<bool>,
606    simd_types_indirect: Option<bool>,
607    limit_rdylib_exports: Option<bool>,
608    override_export_symbols: Option<StaticCow<[StaticCow<str>]>>,
609    merge_functions: Option<MergeFunctions>,
610    #[serde(rename = "target-mcount")]
611    mcount: Option<StaticCow<str>>,
612    llvm_mcount_intrinsic: Option<StaticCow<str>>,
613    llvm_abiname: Option<StaticCow<str>>,
614    llvm_floatabi: Option<FloatAbi>,
615    rustc_abi: Option<RustcAbi>,
616    relax_elf_relocations: Option<bool>,
617    llvm_args: Option<StaticCow<[StaticCow<str>]>>,
618    use_ctors_section: Option<bool>,
619    eh_frame_header: Option<bool>,
620    has_thumb_interworking: Option<bool>,
621    debuginfo_kind: Option<DebuginfoKind>,
622    split_debuginfo: Option<SplitDebuginfo>,
623    supported_split_debuginfo: Option<StaticCow<[SplitDebuginfo]>>,
624    supported_sanitizers: Option<Vec<SanitizerSet>>,
625    default_sanitizers: Option<Vec<SanitizerSet>>,
626    generate_arange_section: Option<bool>,
627    supports_stack_protector: Option<bool>,
628    small_data_threshold_support: Option<SmallDataThresholdSupport>,
629    entry_name: Option<StaticCow<str>>,
630    supports_xray: Option<bool>,
631    entry_abi: Option<ExternAbiWrapper>,
632}
633
634pub fn json_schema() -> schemars::Schema {
635    schemars::schema_for!(TargetSpecJson)
636}
rustc_target/spec/json.rs

rustc_target/spec/
json.rs
