1include "llvm/Option/OptParser.td"
2
3// For options whose names are multiple letters, either one dash or
4// two can precede the option name except those that start with 'o'.
5class F<string name>: Flag<["--", "-"], name>;
6class J<string name>: Joined<["--", "-"], name>;
7
8multiclass Eq<string name, string help> {
9  def NAME: Separate<["--", "-"], name>;
10  def NAME # _eq: Joined<["--", "-"], name # "=">, Alias<!cast<Separate>(NAME)>,
11    HelpText<help>;
12}
13
14multiclass B<string name, string help1, string help2> {
15  def NAME: Flag<["--", "-"], name>, HelpText<help1>;
16  def no_ # NAME: Flag<["--", "-"], "no-" # name>, HelpText<help2>;
17}
18
19defm auxiliary: Eq<"auxiliary", "Set DT_AUXILIARY field to the specified name">;
20
21def Bsymbolic: F<"Bsymbolic">, HelpText<"Bind defined symbols locally">;
22
23def Bsymbolic_functions: F<"Bsymbolic-functions">,
24  HelpText<"Bind defined function symbols locally">;
25
26def Bdynamic: F<"Bdynamic">, HelpText<"Link against shared libraries (default)">;
27
28def Bstatic: F<"Bstatic">, HelpText<"Do not link against shared libraries">;
29
30def build_id: F<"build-id">, HelpText<"Alias for --build-id=fast">;
31
32def build_id_eq: J<"build-id=">, HelpText<"Generate build ID note">,
33  MetaVarName<"[fast,md5,sha1,uuid,0x<hexstring>]">;
34
35defm check_sections: B<"check-sections",
36    "Check section addresses for overlaps (default)",
37    "Do not check section addresses for overlaps">;
38
39defm compress_debug_sections:
40  Eq<"compress-debug-sections", "Compress DWARF debug sections">,
41  MetaVarName<"[none,zlib]">;
42
43defm defsym: Eq<"defsym", "Define a symbol alias">, MetaVarName<"<symbol>=<value>">;
44
45defm split_stack_adjust_size
46    : Eq<"split-stack-adjust-size",
47         "Specify adjustment to stack size when a split-stack function calls a "
48         "non-split-stack function">,
49      MetaVarName<"<value>">;
50
51defm library_path:
52  Eq<"library-path", "Add a directory to the library search path">, MetaVarName<"<dir>">;
53
54def O: JoinedOrSeparate<["-"], "O">, HelpText<"Optimize output file size">;
55
56defm Tbss: Eq<"Tbss", "Same as --section-start with .bss as the sectionname">;
57
58defm Tdata: Eq<"Tdata", "Same as --section-start with .data as the sectionname">;
59
60defm Ttext: Eq<"Ttext", "Same as --section-start with .text as the sectionname">;
61
62defm allow_multiple_definition: B<"allow-multiple-definition",
63    "Allow multiple definitions",
64    "Do not allow multiple definitions (default)">;
65
66defm allow_shlib_undefined: B<"allow-shlib-undefined",
67    "Allow unresolved references in shared libraries (default when linking a shared library)",
68    "Do not allow unresolved references in shared libraries (default when linking an executable)">;
69
70defm apply_dynamic_relocs: B<"apply-dynamic-relocs",
71    "Apply link-time values for dynamic relocations",
72    "Do not apply link-time values for dynamic relocations (default)">;
73
74defm dependent_libraries: B<"dependent-libraries",
75    "Process dependent library specifiers from input files (default)",
76    "Ignore dependent library specifiers from input files">;
77
78defm as_needed: B<"as-needed",
79    "Only set DT_NEEDED for shared libraries if used",
80    "Always set DT_NEEDED for shared libraries (default)">;
81
82defm call_graph_ordering_file:
83  Eq<"call-graph-ordering-file", "Layout sections to optimize the given callgraph">;
84
85defm call_graph_profile_sort: B<"call-graph-profile-sort",
86    "Reorder sections with call graph profile (default)",
87    "Do not reorder sections with call graph profile">;
88
89// -chroot doesn't have a help text because it is an internal option.
90def chroot: Separate<["--", "-"], "chroot">;
91
92def color_diagnostics: F<"color-diagnostics">,
93  HelpText<"Alias for --color-diagnostics=always">;
94
95def color_diagnostics_eq: J<"color-diagnostics=">,
96  HelpText<"Use colors in diagnostics">,
97  MetaVarName<"[auto,always,never]">;
98
99defm cref: B<"cref",
100    "Output cross reference table",
101    "Do not output cross reference table">;
102
103defm define_common: B<"define-common",
104    "Assign space to common symbols",
105    "Do not assign space to common symbols">;
106
107defm demangle: B<"demangle",
108    "Demangle symbol names (default)",
109    "Do not demangle symbol names">;
110
111def disable_new_dtags: F<"disable-new-dtags">,
112  HelpText<"Disable new dynamic tags">;
113
114def discard_all: F<"discard-all">, HelpText<"Delete all local symbols">;
115
116def discard_locals: F<"discard-locals">,
117  HelpText<"Delete temporary local symbols">;
118
119def discard_none: F<"discard-none">,
120  HelpText<"Keep all symbols in the symbol table">;
121
122defm dynamic_linker: Eq<"dynamic-linker", "Which dynamic linker to use">;
123
124defm dynamic_list: Eq<"dynamic-list", "Read a list of dynamic symbols">;
125
126defm eh_frame_hdr: B<"eh-frame-hdr",
127    "Request creation of .eh_frame_hdr section and PT_GNU_EH_FRAME segment header",
128    "Do not create .eh_frame_hdr section">;
129
130def emit_relocs: F<"emit-relocs">, HelpText<"Generate relocations in output">;
131
132def enable_new_dtags: F<"enable-new-dtags">,
133  HelpText<"Enable new dynamic tags (default)">;
134
135def end_group: F<"end-group">,
136  HelpText<"Ignored for compatibility with GNU unless you pass --warn-backrefs">;
137
138def end_lib: F<"end-lib">,
139  HelpText<"End a grouping of objects that should be treated as if they were together in an archive">;
140
141defm entry: Eq<"entry", "Name of entry point symbol">,
142  MetaVarName<"<entry>">;
143
144defm error_limit:
145  Eq<"error-limit", "Maximum number of errors to emit before stopping (0 = no limit)">;
146
147def error_unresolved_symbols: F<"error-unresolved-symbols">,
148  HelpText<"Report unresolved symbols as errors">;
149
150defm exclude_libs: Eq<"exclude-libs", "Exclude static libraries from automatic export">;
151
152defm execute_only: B<"execute-only",
153    "Mark executable sections unreadable",
154    "Mark executable sections readable (default)">;
155
156defm export_dynamic: B<"export-dynamic",
157    "Put symbols in the dynamic symbol table",
158    "Do not put symbols in the dynamic symbol table (default)">;
159
160defm export_dynamic_symbol:
161  Eq<"export-dynamic-symbol", "Put a symbol in the dynamic symbol table">;
162
163defm fatal_warnings: B<"fatal-warnings",
164    "Treat warnings as errors",
165    "Do not treat warnings as errors (default)">;
166
167defm filter: Eq<"filter", "Set DT_FILTER field to the specified name">;
168
169defm fini: Eq<"fini", "Specify a finalizer function">, MetaVarName<"<symbol>">;
170
171def fix_cortex_a53_843419: F<"fix-cortex-a53-843419">,
172  HelpText<"Apply fixes for AArch64 Cortex-A53 erratum 843419">;
173
174// This option is intentionally hidden from the user as the implementation
175// is not complete.
176def require_cet: F<"require-cet">;
177
178def force_bti: F<"force-bti">,
179  HelpText<"Force enable AArch64 BTI in PLT, warn if Input ELF file does not have GNU_PROPERTY_AARCH64_FEATURE_1_BTI property">;
180
181defm format: Eq<"format", "Change the input format of the inputs following this option">,
182  MetaVarName<"[default,elf,binary]">;
183
184defm gc_sections: B<"gc-sections",
185    "Enable garbage collection of unused sections",
186    "Disable garbage collection of unused sections (default)">;
187
188defm gdb_index: B<"gdb-index",
189    "Generate .gdb_index section",
190    "Do not generate .gdb_index section (default)">;
191
192defm gnu_unique: B<"gnu-unique",
193  "Enable STB_GNU_UNIQUE symbol binding (default)",
194  "Disable STB_GNU_UNIQUE symbol binding">;
195
196defm hash_style: Eq<"hash-style", "Specify hash style (sysv, gnu or both)">;
197
198def help: F<"help">, HelpText<"Print option help">;
199
200def icf_all: F<"icf=all">, HelpText<"Enable identical code folding">;
201
202def icf_safe: F<"icf=safe">, HelpText<"Enable safe identical code folding">;
203
204def icf_none: F<"icf=none">, HelpText<"Disable identical code folding (default)">;
205
206def ignore_function_address_equality: F<"ignore-function-address-equality">,
207  HelpText<"lld can break the address equality of functions">;
208
209def ignore_data_address_equality: F<"ignore-data-address-equality">,
210  HelpText<"lld can break the address equality of data">;
211
212defm image_base: Eq<"image-base", "Set the base address">;
213
214defm init: Eq<"init", "Specify an initializer function">,
215  MetaVarName<"<symbol>">;
216
217defm just_symbols: Eq<"just-symbols", "Just link symbols">;
218
219defm keep_unique: Eq<"keep-unique", "Do not fold this symbol during ICF">;
220
221defm library: Eq<"library", "Root name of library to use">,
222  MetaVarName<"<libName>">;
223
224def m: JoinedOrSeparate<["-"], "m">, HelpText<"Set target emulation">;
225
226defm Map: Eq<"Map", "Print a link map to the specified file">;
227
228defm merge_exidx_entries: B<"merge-exidx-entries",
229    "Enable merging .ARM.exidx entries (default)",
230    "Disable merging .ARM.exidx entries">;
231
232def nmagic: F<"nmagic">, MetaVarName<"<magic>">,
233  HelpText<"Do not page align sections, link against static libraries.">;
234
235def nostdlib: F<"nostdlib">,
236  HelpText<"Only search directories specified on the command line">;
237
238def no_color_diagnostics: F<"no-color-diagnostics">,
239  HelpText<"Do not use colors in diagnostics">;
240
241def no_dynamic_linker: F<"no-dynamic-linker">,
242  HelpText<"Inhibit output of .interp section">;
243
244def noinhibit_exec: F<"noinhibit-exec">,
245  HelpText<"Retain the executable output file whenever it is still usable">;
246
247def no_nmagic: F<"no-nmagic">, MetaVarName<"<magic>">,
248  HelpText<"Page align sections (default)">;
249
250def no_omagic: F<"no-omagic">, MetaVarName<"<magic>">,
251  HelpText<"Do not set the text data sections to be writable, page align sections (default)">;
252
253def no_rosegment: F<"no-rosegment">,
254  HelpText<"Do not put read-only non-executable sections in their own segment">;
255
256def no_undefined: F<"no-undefined">,
257  HelpText<"Report unresolved symbols even if the linker is creating a shared library">;
258
259def o: JoinedOrSeparate<["-"], "o">, MetaVarName<"<path>">,
260  HelpText<"Path to file to write output">;
261
262def oformat: Separate<["--"], "oformat">, MetaVarName<"<format>">,
263  HelpText<"Specify the binary format for the output object file">;
264
265def omagic: Flag<["--"], "omagic">, MetaVarName<"<magic>">,
266  HelpText<"Set the text and data sections to be readable and writable, do not page align sections, link against static libraries">;
267
268defm orphan_handling:
269  Eq<"orphan-handling", "Control how orphan sections are handled when linker script used">;
270
271defm pack_dyn_relocs:
272  Eq<"pack-dyn-relocs", "Pack dynamic relocations in the given format">,
273  MetaVarName<"[none,android,relr,android+relr]">;
274
275def pac_plt: F<"pac-plt">,
276  HelpText<"AArch64 only, use pointer authentication in PLT">;
277
278defm use_android_relr_tags: B<"use-android-relr-tags",
279    "Use SHT_ANDROID_RELR / DT_ANDROID_RELR* tags instead of SHT_RELR / DT_RELR*",
280    "Use SHT_RELR / DT_RELR* tags (default)">;
281
282def pic_veneer: F<"pic-veneer">,
283  HelpText<"Always generate position independent thunks (veneers)">;
284
285defm pie: B<"pie",
286    "Create a position independent executable",
287    "Do not create a position independent executable (default)">;
288
289defm print_gc_sections: B<"print-gc-sections",
290    "List removed unused sections",
291    "Do not list removed unused sections (default)">;
292
293defm print_icf_sections: B<"print-icf-sections",
294    "List identical folded sections",
295    "Do not list identical folded sections (default)">;
296
297defm print_symbol_order: Eq<"print-symbol-order",
298  "Print a symbol order specified by --call-graph-ordering-file into the speficied file">;
299
300def pop_state: F<"pop-state">,
301  HelpText<"Undo the effect of -push-state">;
302
303def push_state: F<"push-state">,
304  HelpText<"Save the current state of -as-needed, -static and -whole-archive">;
305
306def print_map: F<"print-map">,
307  HelpText<"Print a link map to the standard output">;
308
309defm reproduce: Eq<"reproduce", "Dump linker invocation and input files for debugging">;
310
311defm rpath: Eq<"rpath", "Add a DT_RUNPATH to the output">;
312
313def relocatable: F<"relocatable">, HelpText<"Create relocatable object file">;
314
315defm retain_symbols_file:
316  Eq<"retain-symbols-file", "Retain only the symbols listed in the file">,
317  MetaVarName<"<file>">;
318
319defm script: Eq<"script", "Read linker script">;
320
321defm section_start: Eq<"section-start", "Set address of section">,
322  MetaVarName<"<address>">;
323
324def shared: F<"shared">, HelpText<"Build a shared object">;
325
326defm soname: Eq<"soname", "Set DT_SONAME">;
327
328defm sort_section:
329  Eq<"sort-section", "Specifies sections sorting rule when linkerscript is used">;
330
331def start_group: F<"start-group">,
332  HelpText<"Ignored for compatibility with GNU unless you pass --warn-backrefs">;
333
334def start_lib: F<"start-lib">,
335  HelpText<"Start a grouping of objects that should be treated as if they were together in an archive">;
336
337def strip_all: F<"strip-all">, HelpText<"Strip all symbols">;
338
339def strip_debug: F<"strip-debug">, HelpText<"Strip debugging information">;
340
341defm symbol_ordering_file:
342  Eq<"symbol-ordering-file", "Layout sections to place symbols in the order specified by symbol ordering file">;
343
344defm sysroot: Eq<"sysroot", "Set the system root">;
345
346def target1_rel: F<"target1-rel">, HelpText<"Interpret R_ARM_TARGET1 as R_ARM_REL32">;
347
348def target1_abs: F<"target1-abs">, HelpText<"Interpret R_ARM_TARGET1 as R_ARM_ABS32 (default)">;
349
350defm target2:
351  Eq<"target2", "Interpret R_ARM_TARGET2 as <type>, where <type> is one of rel, abs, or got-rel">,
352  MetaVarName<"<type>">;
353
354defm threads: B<"threads",
355    "Run the linker multi-threaded (default)",
356    "Do not run the linker multi-threaded">;
357
358defm toc_optimize : B<"toc-optimize",
359    "(PowerPC64) Enable TOC related optimizations (default)",
360    "(PowerPC64) Disable TOC related optimizations">;
361
362def trace: F<"trace">, HelpText<"Print the names of the input files">;
363
364defm trace_symbol: Eq<"trace-symbol", "Trace references to symbols">;
365
366defm undefined: Eq<"undefined", "Force undefined symbol during linking">,
367  MetaVarName<"<symbol>">;
368
369defm undefined_glob: Eq<"undefined-glob", "Force undefined symbol during linking">,
370  MetaVarName<"<pattern>">;
371
372defm unresolved_symbols:
373  Eq<"unresolved-symbols", "Determine how to handle unresolved symbols">;
374
375defm undefined_version: B<"undefined-version",
376  "Allow unused version in version script (default)",
377  "Report version scripts that refer undefined symbols">;
378
379defm rsp_quoting: Eq<"rsp-quoting", "Quoting style for response files">,
380  MetaVarName<"[posix,windows]">;
381
382def v: Flag<["-"], "v">, HelpText<"Display the version number">;
383
384def verbose: F<"verbose">, HelpText<"Verbose mode">;
385
386def version: F<"version">, HelpText<"Display the version number and exit">;
387
388defm version_script: Eq<"version-script", "Read a version script">;
389
390defm warn_backrefs: B<"warn-backrefs",
391    "Warn about backward symbol references to fetch archive members",
392    "Do not warn about backward symbol references to fetch archive members (default)">;
393
394defm warn_common: B<"warn-common",
395    "Warn about duplicate common symbols",
396    "Do not warn about duplicate common symbols (default)">;
397
398defm warn_ifunc_textrel: B<"warn-ifunc-textrel",
399    "Warn about using ifunc symbols with text relocations",
400    "Do not warn about using ifunc symbols with text relocations (default)">;
401
402defm warn_symbol_ordering: B<"warn-symbol-ordering",
403    "Warn about problems with the symbol ordering file (default)",
404    "Do not warn about problems with the symbol ordering file">;
405
406def warn_unresolved_symbols: F<"warn-unresolved-symbols">,
407  HelpText<"Report unresolved symbols as warnings">;
408
409defm whole_archive: B<"whole-archive",
410    "Force load of all members in a static library",
411    "Do not force load of all members in a static library (default)">;
412
413defm wrap: Eq<"wrap", "Use wrapper functions for symbol">,
414  MetaVarName<"<symbol>=<symbol>">;
415
416def z: JoinedOrSeparate<["-"], "z">, MetaVarName<"<option>">,
417  HelpText<"Linker option extensions">;
418
419def visual_studio_diagnostics_format : F<"vs-diagnostics">,
420HelpText<"Format diagnostics for Visual Studio compatiblity">;
421
422// Aliases
423def: Separate<["-"], "f">, Alias<auxiliary>, HelpText<"Alias for --auxiliary">;
424def: F<"call_shared">, Alias<Bdynamic>, HelpText<"Alias for --Bdynamic">;
425def: F<"dy">, Alias<Bdynamic>, HelpText<"Alias for --Bdynamic">;
426def: F<"dn">, Alias<Bstatic>, HelpText<"Alias for --Bstatic">;
427def: F<"non_shared">, Alias<Bstatic>, HelpText<"Alias for --Bstatic">;
428def: F<"static">, Alias<Bstatic>, HelpText<"Alias for --Bstatic">;
429def: Flag<["-"], "d">, Alias<define_common>, HelpText<"Alias for --define-common">;
430def: F<"dc">, Alias<define_common>, HelpText<"Alias for --define-common">;
431def: F<"dp">, Alias<define_common>, HelpText<"Alias for --define-common">;
432def: Flag<["-"], "x">, Alias<discard_all>, HelpText<"Alias for --discard-all">;
433def: Flag<["-"], "X">, Alias<discard_locals>, HelpText<"Alias for --discard-locals">;
434def: Flag<["-"], "q">, Alias<emit_relocs>, HelpText<"Alias for --emit-relocs">;
435def: Flag<["-"], ")">, Alias<end_group>, HelpText<"Alias for --end-group">;
436def: JoinedOrSeparate<["-"], "e">, Alias<entry>, HelpText<"Alias for --entry">;
437def: Flag<["-"], "E">, Alias<export_dynamic>, HelpText<"Alias for --export-dynamic">;
438def: Separate<["-"], "F">, Alias<filter>, HelpText<"Alias for --filter">;
439def: Separate<["-"], "b">, Alias<format>, HelpText<"Alias for --format">;
440def: JoinedOrSeparate<["-"], "l">, Alias<library>, HelpText<"Alias for --library">;
441def: JoinedOrSeparate<["-"], "L">, Alias<library_path>, HelpText<"Alias for --library-path">;
442def: F<"no-pic-executable">, Alias<no_pie>, HelpText<"Alias for --no-pie">;
443def: Flag<["-"], "n">, Alias<nmagic>, HelpText<"Alias for --nmagic">;
444def: Flag<["-"], "N">, Alias<omagic>, HelpText<"Alias for --omagic">;
445def: Joined<["--"], "output=">, Alias<o>, HelpText<"Alias for -o">;
446def: Separate<["--"], "output">, Alias<o>, HelpText<"Alias for -o">;
447def: F<"pic-executable">, Alias<pie>, HelpText<"Alias for --pie">;
448def: Flag<["-"], "M">, Alias<print_map>, HelpText<"Alias for --print-map">;
449def: Flag<["-"], "r">, Alias<relocatable>, HelpText<"Alias for --relocatable">;
450def: JoinedOrSeparate<["-"], "R">, Alias<rpath>, HelpText<"Alias for --rpath">;
451def: JoinedOrSeparate<["-"], "T">, Alias<script>, HelpText<"Alias for --script">;
452def: F<"Bshareable">, Alias<shared>, HelpText<"Alias for --shared">;
453def: JoinedOrSeparate<["-"], "h">, Alias<soname>, HelpText<"Alias for --soname">;
454def: Flag<["-"], "(">, Alias<start_group>, HelpText<"Alias for --start-group">;
455def: Flag<["-"], "s">, Alias<strip_all>, HelpText<"Alias for --strip-all">;
456def: Flag<["-"], "S">, Alias<strip_debug>, HelpText<"Alias for --strip-debug">;
457def: Flag<["-"], "t">, Alias<trace>, HelpText<"Alias for --trace">;
458def: JoinedOrSeparate<["-"], "y">, Alias<trace_symbol>, HelpText<"Alias for --trace-symbol">;
459def: Separate<["-", "--"], "Ttext-segment">, Alias<Ttext>, HelpText<"Alias for --Ttext">;
460def: Joined<["-", "--"], "Ttext-segment=">, Alias<Ttext>, HelpText<"Alias for --Ttext">;
461def: JoinedOrSeparate<["-"], "u">, Alias<undefined>, HelpText<"Alias for --undefined">;
462def: Flag<["-"], "V">, Alias<version>, HelpText<"Alias for --version">;
463
464// LTO-related options.
465def lto_aa_pipeline: J<"lto-aa-pipeline=">,
466  HelpText<"AA pipeline to run during LTO. Used in conjunction with -lto-newpm-passes">;
467def lto_debug_pass_manager: F<"lto-debug-pass-manager">,
468  HelpText<"Debug new pass manager">;
469def lto_new_pass_manager: F<"lto-new-pass-manager">,
470  HelpText<"Use new pass manager">;
471def lto_newpm_passes: J<"lto-newpm-passes=">,
472  HelpText<"Passes to run during LTO">;
473def lto_O: J<"lto-O">, MetaVarName<"<opt-level>">,
474  HelpText<"Optimization level for LTO">;
475def lto_partitions: J<"lto-partitions=">,
476  HelpText<"Number of LTO codegen partitions">;
477def lto_cs_profile_generate: F<"lto-cs-profile-generate">,
478  HelpText<"Perform context senstive PGO instrumentation">;
479def lto_cs_profile_file: J<"lto-cs-profile-file=">,
480  HelpText<"Context sensitive profile file path">;
481def lto_sample_profile: J<"lto-sample-profile=">,
482  HelpText<"Sample profile file path">;
483def disable_verify: F<"disable-verify">;
484defm mllvm: Eq<"mllvm", "Additional arguments to forward to LLVM's option processing">;
485def opt_remarks_filename: Separate<["--"], "opt-remarks-filename">,
486  HelpText<"YAML output file for optimization remarks">;
487def opt_remarks_passes: Separate<["--"], "opt-remarks-passes">,
488  HelpText<"Regex for the passes that need to be serialized to the output file">;
489def opt_remarks_with_hotness: Flag<["--"], "opt-remarks-with-hotness">,
490  HelpText<"Include hotness information in the optimization remarks file">;
491def opt_remarks_format: Separate<["--"], "opt-remarks-format">,
492  HelpText<"The format used for serializing remarks (default: YAML)">;
493defm plugin_opt: Eq<"plugin-opt", "specifies LTO options for compatibility with GNU linkers">;
494def save_temps: F<"save-temps">;
495def thinlto_cache_dir: J<"thinlto-cache-dir=">,
496  HelpText<"Path to ThinLTO cached object file directory">;
497defm thinlto_cache_policy: Eq<"thinlto-cache-policy", "Pruning policy for the ThinLTO cache">;
498def thinlto_jobs: J<"thinlto-jobs=">, HelpText<"Number of ThinLTO jobs">;
499
500def: J<"plugin-opt=O">, Alias<lto_O>, HelpText<"Alias for -lto-O">;
501def: F<"plugin-opt=debug-pass-manager">,
502  Alias<lto_debug_pass_manager>, HelpText<"Alias for -lto-debug-pass-manager">;
503def: F<"plugin-opt=disable-verify">, Alias<disable_verify>, HelpText<"Alias for -disable-verify">;
504def plugin_opt_dwo_dir_eq: J<"plugin-opt=dwo_dir=">,
505  HelpText<"Directory to store .dwo files when LTO and debug fission are used">;
506def plugin_opt_emit_llvm: F<"plugin-opt=emit-llvm">;
507def: J<"plugin-opt=jobs=">, Alias<thinlto_jobs>, HelpText<"Alias for -thinlto-jobs">;
508def: J<"plugin-opt=lto-partitions=">, Alias<lto_partitions>, HelpText<"Alias for -lto-partitions">;
509def plugin_opt_mcpu_eq: J<"plugin-opt=mcpu=">;
510def: F<"plugin-opt=new-pass-manager">,
511  Alias<lto_new_pass_manager>, HelpText<"Alias for -lto-new-pass-manager">;
512def plugin_opt_obj_path_eq: J<"plugin-opt=obj-path=">;
513def: F<"plugin-opt=cs-profile-generate">,
514  Alias<lto_cs_profile_generate>, HelpText<"Alias for -lto-cs-profile-generate">;
515def: J<"plugin-opt=cs-profile-path=">,
516  Alias<lto_cs_profile_file>, HelpText<"Alias for -lto-cs-profile-file">;
517def: J<"plugin-opt=sample-profile=">,
518  Alias<lto_sample_profile>, HelpText<"Alias for -lto-sample-profile">;
519def: F<"plugin-opt=save-temps">, Alias<save_temps>, HelpText<"Alias for -save-temps">;
520def plugin_opt_thinlto_emit_imports_files: F<"plugin-opt=thinlto-emit-imports-files">;
521def plugin_opt_thinlto_index_only: F<"plugin-opt=thinlto-index-only">;
522def plugin_opt_thinlto_index_only_eq: J<"plugin-opt=thinlto-index-only=">;
523def plugin_opt_thinlto_object_suffix_replace_eq: J<"plugin-opt=thinlto-object-suffix-replace=">;
524def plugin_opt_thinlto_prefix_replace_eq: J<"plugin-opt=thinlto-prefix-replace=">;
525
526// Ignore LTO plugin-related options.
527// clang -flto passes -plugin and -plugin-opt to the linker. This is required
528// for ld.gold and ld.bfd to get LTO working. But it's not for lld which doesn't
529// rely on a plugin. Instead of detecting which linker is used on clang side we
530// just ignore the option on lld side as it's easier. In fact, the linker could
531// be called 'ld' and understanding which linker is used would require parsing of
532// --version output.
533defm plugin: Eq<"plugin", "Ignored for compatibility with GNU linkers">;
534
535def plugin_opt_fresolution_eq: J<"plugin-opt=-fresolution=">;
536def plugin_opt_pass_through_eq: J<"plugin-opt=-pass-through=">;
537def plugin_opt_thinlto: J<"plugin-opt=thinlto">;
538def plugin_opt_slash: J<"plugin-opt=/">;
539
540// Options listed below are silently ignored for now for compatibility.
541def: F<"detect-odr-violations">;
542def: Flag<["-"], "g">;
543def: F<"long-plt">;
544def: F<"no-add-needed">;
545def: F<"no-copy-dt-needed-entries">;
546def: F<"no-ctors-in-init-array">;
547def: F<"no-keep-memory">;
548def: F<"no-mmap-output-file">;
549def: F<"no-pipeline-knowledge">;
550def: F<"no-warn-mismatch">;
551def: Flag<["-"], "p">;
552def: Separate<["--", "-"], "rpath-link">;
553def: J<"rpath-link=">;
554def: F<"secure-plt">;
555def: F<"sort-common">;
556def: F<"stats">;
557def: F<"warn-execstack">;
558def: F<"warn-once">;
559def: F<"warn-shared-textrel">;
560def: F<"EB">;
561def: F<"EL">;
562def: JoinedOrSeparate<["-"], "G">;
563def: F<"Qy">;
564
565// Hidden option used for testing MIPS multi-GOT implementation.
566defm mips_got_size:
567  Eq<"mips-got-size", "Max size of a single MIPS GOT. 0x10000 by default.">,
568  Flags<[HelpHidden]>;
569