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oasis-root

Compiled tree of Oasis Linux based on own branch at <https://hacktivis.me/git/oasis/> git clone https://anongit.hacktivis.me/git/oasis-root.git

nm.1 (24293B)


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  132. .rm #[ #] #H #V #F C
  133. .\" ========================================================================
  134. .\"
  135. .IX Title "NM 1"
  136. .TH NM 1 "2022-08-05" "binutils-2.39" "GNU Development Tools"
  137. .\" For nroff, turn off justification. Always turn off hyphenation; it makes
  138. .\" way too many mistakes in technical documents.
  139. .if n .ad l
  140. .nh
  141. .SH "NAME"
  142. nm \- list symbols from object files
  143. .SH "SYNOPSIS"
  144. .IX Header "SYNOPSIS"
  145. nm [\fB\-A\fR|\fB\-o\fR|\fB\-\-print\-file\-name\fR]
  146. [\fB\-a\fR|\fB\-\-debug\-syms\fR]
  147. [\fB\-B\fR|\fB\-\-format=bsd\fR]
  148. [\fB\-C\fR|\fB\-\-demangle\fR[=\fIstyle\fR]]
  149. [\fB\-D\fR|\fB\-\-dynamic\fR]
  150. [\fB\-f\fR\fIformat\fR|\fB\-\-format=\fR\fIformat\fR]
  151. [\fB\-g\fR|\fB\-\-extern\-only\fR]
  152. [\fB\-h\fR|\fB\-\-help\fR]
  153. [\fB\-\-ifunc\-chars=\fR\fI\s-1CHARS\s0\fR]
  154. [\fB\-j\fR|\fB\-\-format=just\-symbols\fR]
  155. [\fB\-l\fR|\fB\-\-line\-numbers\fR] [\fB\-\-inlines\fR]
  156. [\fB\-n\fR|\fB\-v\fR|\fB\-\-numeric\-sort\fR]
  157. [\fB\-P\fR|\fB\-\-portability\fR]
  158. [\fB\-p\fR|\fB\-\-no\-sort\fR]
  159. [\fB\-r\fR|\fB\-\-reverse\-sort\fR]
  160. [\fB\-S\fR|\fB\-\-print\-size\fR]
  161. [\fB\-s\fR|\fB\-\-print\-armap\fR]
  162. [\fB\-t\fR \fIradix\fR|\fB\-\-radix=\fR\fIradix\fR]
  163. [\fB\-u\fR|\fB\-\-undefined\-only\fR]
  164. [\fB\-U\fR|\fB\-\-defined\-only\fR]
  165. [\fB\-V\fR|\fB\-\-version\fR]
  166. [\fB\-W\fR|\fB\-\-no\-weak\fR]
  167. [\fB\-X 32_64\fR]
  168. [\fB\-\-no\-demangle\fR]
  169. [\fB\-\-no\-recurse\-limit\fR|\fB\-\-recurse\-limit\fR]]
  170. [\fB\-\-plugin\fR \fIname\fR]
  171. [\fB\-\-size\-sort\fR]
  172. [\fB\-\-special\-syms\fR]
  173. [\fB\-\-synthetic\fR]
  174. [\fB\-\-target=\fR\fIbfdname\fR]
  175. [\fB\-\-unicode=\fR\fImethod\fR]
  176. [\fB\-\-with\-symbol\-versions\fR]
  177. [\fB\-\-without\-symbol\-versions\fR]
  178. [\fIobjfile\fR...]
  179. .SH "DESCRIPTION"
  180. .IX Header "DESCRIPTION"
  181. \&\s-1GNU\s0 \fBnm\fR lists the symbols from object files \fIobjfile\fR....
  182. If no object files are listed as arguments, \fBnm\fR assumes the file
  183. \&\fIa.out\fR.
  184. .PP
  185. For each symbol, \fBnm\fR shows:
  186. .IP "\(bu" 4
  187. The symbol value, in the radix selected by options (see below), or
  188. hexadecimal by default.
  189. .IP "\(bu" 4
  190. The symbol type. At least the following types are used; others are, as
  191. well, depending on the object file format. If lowercase, the symbol is
  192. usually local; if uppercase, the symbol is global (external). There
  193. are however a few lowercase symbols that are shown for special global
  194. symbols (\f(CW\*(C`u\*(C'\fR, \f(CW\*(C`v\*(C'\fR and \f(CW\*(C`w\*(C'\fR).
  195. .RS 4
  196. .ie n .IP """A""" 4
  197. .el .IP "\f(CWA\fR" 4
  198. .IX Item "A"
  199. The symbol's value is absolute, and will not be changed by further
  200. linking.
  201. .ie n .IP """B""" 4
  202. .el .IP "\f(CWB\fR" 4
  203. .IX Item "B"
  204. .PD 0
  205. .ie n .IP """b""" 4
  206. .el .IP "\f(CWb\fR" 4
  207. .IX Item "b"
  208. .PD
  209. The symbol is in the \s-1BSS\s0 data section. This section typically
  210. contains zero-initialized or uninitialized data, although the exact
  211. behavior is system dependent.
  212. .ie n .IP """C""" 4
  213. .el .IP "\f(CWC\fR" 4
  214. .IX Item "C"
  215. .PD 0
  216. .ie n .IP """c""" 4
  217. .el .IP "\f(CWc\fR" 4
  218. .IX Item "c"
  219. .PD
  220. The symbol is common. Common symbols are uninitialized data. When
  221. linking, multiple common symbols may appear with the same name. If the
  222. symbol is defined anywhere, the common symbols are treated as undefined
  223. references.
  224. The lower case \fIc\fR character is used when the symbol is in a
  225. special section for small commons.
  226. .ie n .IP """D""" 4
  227. .el .IP "\f(CWD\fR" 4
  228. .IX Item "D"
  229. .PD 0
  230. .ie n .IP """d""" 4
  231. .el .IP "\f(CWd\fR" 4
  232. .IX Item "d"
  233. .PD
  234. The symbol is in the initialized data section.
  235. .ie n .IP """G""" 4
  236. .el .IP "\f(CWG\fR" 4
  237. .IX Item "G"
  238. .PD 0
  239. .ie n .IP """g""" 4
  240. .el .IP "\f(CWg\fR" 4
  241. .IX Item "g"
  242. .PD
  243. The symbol is in an initialized data section for small objects. Some
  244. object file formats permit more efficient access to small data objects,
  245. such as a global int variable as opposed to a large global array.
  246. .ie n .IP """i""" 4
  247. .el .IP "\f(CWi\fR" 4
  248. .IX Item "i"
  249. For \s-1PE\s0 format files this indicates that the symbol is in a section
  250. specific to the implementation of DLLs.
  251. .Sp
  252. For \s-1ELF\s0 format files this indicates that the symbol is an indirect
  253. function. This is a \s-1GNU\s0 extension to the standard set of \s-1ELF\s0 symbol
  254. types. It indicates a symbol which if referenced by a relocation does
  255. not evaluate to its address, but instead must be invoked at runtime.
  256. The runtime execution will then return the value to be used in the
  257. relocation.
  258. .Sp
  259. Note \- the actual symbols display for \s-1GNU\s0 indirect symbols is
  260. controlled by the \fB\-\-ifunc\-chars\fR command line option. If this
  261. option has been provided then the first character in the string will
  262. be used for global indirect function symbols. If the string contains
  263. a second character then that will be used for local indirect function
  264. symbols.
  265. .ie n .IP """I""" 4
  266. .el .IP "\f(CWI\fR" 4
  267. .IX Item "I"
  268. The symbol is an indirect reference to another symbol.
  269. .ie n .IP """N""" 4
  270. .el .IP "\f(CWN\fR" 4
  271. .IX Item "N"
  272. The symbol is a debugging symbol.
  273. .ie n .IP """n""" 4
  274. .el .IP "\f(CWn\fR" 4
  275. .IX Item "n"
  276. The symbol is in the read-only data section.
  277. .ie n .IP """p""" 4
  278. .el .IP "\f(CWp\fR" 4
  279. .IX Item "p"
  280. The symbol is in a stack unwind section.
  281. .ie n .IP """R""" 4
  282. .el .IP "\f(CWR\fR" 4
  283. .IX Item "R"
  284. .PD 0
  285. .ie n .IP """r""" 4
  286. .el .IP "\f(CWr\fR" 4
  287. .IX Item "r"
  288. .PD
  289. The symbol is in a read only data section.
  290. .ie n .IP """S""" 4
  291. .el .IP "\f(CWS\fR" 4
  292. .IX Item "S"
  293. .PD 0
  294. .ie n .IP """s""" 4
  295. .el .IP "\f(CWs\fR" 4
  296. .IX Item "s"
  297. .PD
  298. The symbol is in an uninitialized or zero-initialized data section
  299. for small objects.
  300. .ie n .IP """T""" 4
  301. .el .IP "\f(CWT\fR" 4
  302. .IX Item "T"
  303. .PD 0
  304. .ie n .IP """t""" 4
  305. .el .IP "\f(CWt\fR" 4
  306. .IX Item "t"
  307. .PD
  308. The symbol is in the text (code) section.
  309. .ie n .IP """U""" 4
  310. .el .IP "\f(CWU\fR" 4
  311. .IX Item "U"
  312. The symbol is undefined.
  313. .ie n .IP """u""" 4
  314. .el .IP "\f(CWu\fR" 4
  315. .IX Item "u"
  316. The symbol is a unique global symbol. This is a \s-1GNU\s0 extension to the
  317. standard set of \s-1ELF\s0 symbol bindings. For such a symbol the dynamic linker
  318. will make sure that in the entire process there is just one symbol with
  319. this name and type in use.
  320. .ie n .IP """V""" 4
  321. .el .IP "\f(CWV\fR" 4
  322. .IX Item "V"
  323. .PD 0
  324. .ie n .IP """v""" 4
  325. .el .IP "\f(CWv\fR" 4
  326. .IX Item "v"
  327. .PD
  328. The symbol is a weak object. When a weak defined symbol is linked with
  329. a normal defined symbol, the normal defined symbol is used with no error.
  330. When a weak undefined symbol is linked and the symbol is not defined,
  331. the value of the weak symbol becomes zero with no error. On some
  332. systems, uppercase indicates that a default value has been specified.
  333. .ie n .IP """W""" 4
  334. .el .IP "\f(CWW\fR" 4
  335. .IX Item "W"
  336. .PD 0
  337. .ie n .IP """w""" 4
  338. .el .IP "\f(CWw\fR" 4
  339. .IX Item "w"
  340. .PD
  341. The symbol is a weak symbol that has not been specifically tagged as a
  342. weak object symbol. When a weak defined symbol is linked with a normal
  343. defined symbol, the normal defined symbol is used with no error.
  344. When a weak undefined symbol is linked and the symbol is not defined,
  345. the value of the symbol is determined in a system-specific manner without
  346. error. On some systems, uppercase indicates that a default value has been
  347. specified.
  348. .ie n .IP """\-""" 4
  349. .el .IP "\f(CW\-\fR" 4
  350. .IX Item "-"
  351. The symbol is a stabs symbol in an a.out object file. In this case, the
  352. next values printed are the stabs other field, the stabs desc field, and
  353. the stab type. Stabs symbols are used to hold debugging information.
  354. .ie n .IP """?""" 4
  355. .el .IP "\f(CW?\fR" 4
  356. .IX Item "?"
  357. The symbol type is unknown, or object file format specific.
  358. .RE
  359. .RS 4
  360. .RE
  361. .IP "\(bu" 4
  362. The symbol name. If a symbol has version information associated with it,
  363. then the version information is displayed as well. If the versioned
  364. symbol is undefined or hidden from linker, the version string is displayed
  365. as a suffix to the symbol name, preceded by an @ character. For example
  366. \&\fBfoo@VER_1\fR. If the version is the default version to be used when
  367. resolving unversioned references to the symbol, then it is displayed as a
  368. suffix preceded by two @ characters. For example \fBfoo@@VER_2\fR.
  369. .SH "OPTIONS"
  370. .IX Header "OPTIONS"
  371. The long and short forms of options, shown here as alternatives, are
  372. equivalent.
  373. .IP "\fB\-A\fR" 4
  374. .IX Item "-A"
  375. .PD 0
  376. .IP "\fB\-o\fR" 4
  377. .IX Item "-o"
  378. .IP "\fB\-\-print\-file\-name\fR" 4
  379. .IX Item "--print-file-name"
  380. .PD
  381. Precede each symbol by the name of the input file (or archive member)
  382. in which it was found, rather than identifying the input file once only,
  383. before all of its symbols.
  384. .IP "\fB\-a\fR" 4
  385. .IX Item "-a"
  386. .PD 0
  387. .IP "\fB\-\-debug\-syms\fR" 4
  388. .IX Item "--debug-syms"
  389. .PD
  390. Display all symbols, even debugger-only symbols; normally these are not
  391. listed.
  392. .IP "\fB\-B\fR" 4
  393. .IX Item "-B"
  394. The same as \fB\-\-format=bsd\fR (for compatibility with the \s-1MIPS\s0 \fBnm\fR).
  395. .IP "\fB\-C\fR" 4
  396. .IX Item "-C"
  397. .PD 0
  398. .IP "\fB\-\-demangle[=\fR\fIstyle\fR\fB]\fR" 4
  399. .IX Item "--demangle[=style]"
  400. .PD
  401. Decode (\fIdemangle\fR) low-level symbol names into user-level names.
  402. Besides removing any initial underscore prepended by the system, this
  403. makes \*(C+ function names readable. Different compilers have different
  404. mangling styles. The optional demangling style argument can be used to
  405. choose an appropriate demangling style for your compiler.
  406. .IP "\fB\-\-no\-demangle\fR" 4
  407. .IX Item "--no-demangle"
  408. Do not demangle low-level symbol names. This is the default.
  409. .IP "\fB\-\-recurse\-limit\fR" 4
  410. .IX Item "--recurse-limit"
  411. .PD 0
  412. .IP "\fB\-\-no\-recurse\-limit\fR" 4
  413. .IX Item "--no-recurse-limit"
  414. .IP "\fB\-\-recursion\-limit\fR" 4
  415. .IX Item "--recursion-limit"
  416. .IP "\fB\-\-no\-recursion\-limit\fR" 4
  417. .IX Item "--no-recursion-limit"
  418. .PD
  419. Enables or disables a limit on the amount of recursion performed
  420. whilst demangling strings. Since the name mangling formats allow for
  421. an infinite level of recursion it is possible to create strings whose
  422. decoding will exhaust the amount of stack space available on the host
  423. machine, triggering a memory fault. The limit tries to prevent this
  424. from happening by restricting recursion to 2048 levels of nesting.
  425. .Sp
  426. The default is for this limit to be enabled, but disabling it may be
  427. necessary in order to demangle truly complicated names. Note however
  428. that if the recursion limit is disabled then stack exhaustion is
  429. possible and any bug reports about such an event will be rejected.
  430. .IP "\fB\-D\fR" 4
  431. .IX Item "-D"
  432. .PD 0
  433. .IP "\fB\-\-dynamic\fR" 4
  434. .IX Item "--dynamic"
  435. .PD
  436. Display the dynamic symbols rather than the normal symbols. This is
  437. only meaningful for dynamic objects, such as certain types of shared
  438. libraries.
  439. .IP "\fB\-f\fR \fIformat\fR" 4
  440. .IX Item "-f format"
  441. .PD 0
  442. .IP "\fB\-\-format=\fR\fIformat\fR" 4
  443. .IX Item "--format=format"
  444. .PD
  445. Use the output format \fIformat\fR, which can be \f(CW\*(C`bsd\*(C'\fR,
  446. \&\f(CW\*(C`sysv\*(C'\fR, \f(CW\*(C`posix\*(C'\fR or \f(CW\*(C`just\-symbols\*(C'\fR. The default is \f(CW\*(C`bsd\*(C'\fR.
  447. Only the first character of \fIformat\fR is significant; it can be
  448. either upper or lower case.
  449. .IP "\fB\-g\fR" 4
  450. .IX Item "-g"
  451. .PD 0
  452. .IP "\fB\-\-extern\-only\fR" 4
  453. .IX Item "--extern-only"
  454. .PD
  455. Display only external symbols.
  456. .IP "\fB\-h\fR" 4
  457. .IX Item "-h"
  458. .PD 0
  459. .IP "\fB\-\-help\fR" 4
  460. .IX Item "--help"
  461. .PD
  462. Show a summary of the options to \fBnm\fR and exit.
  463. .IP "\fB\-\-ifunc\-chars=\fR\fI\s-1CHARS\s0\fR" 4
  464. .IX Item "--ifunc-chars=CHARS"
  465. When display \s-1GNU\s0 indirect function symbols \fBnm\fR will default
  466. to using the \f(CW\*(C`i\*(C'\fR character for both local indirect functions and
  467. global indirect functions. The \fB\-\-ifunc\-chars\fR option allows
  468. the user to specify a string containing one or two characters. The
  469. first character will be used for global indirect function symbols and
  470. the second character, if present, will be used for local indirect
  471. function symbols.
  472. .IP "\fBj\fR" 4
  473. .IX Item "j"
  474. The same as \fB\-\-format=just\-symbols\fR.
  475. .IP "\fB\-l\fR" 4
  476. .IX Item "-l"
  477. .PD 0
  478. .IP "\fB\-\-line\-numbers\fR" 4
  479. .IX Item "--line-numbers"
  480. .PD
  481. For each symbol, use debugging information to try to find a filename and
  482. line number. For a defined symbol, look for the line number of the
  483. address of the symbol. For an undefined symbol, look for the line
  484. number of a relocation entry which refers to the symbol. If line number
  485. information can be found, print it after the other symbol information.
  486. .IP "\fB\-\-inlines\fR" 4
  487. .IX Item "--inlines"
  488. When option \fB\-l\fR is active, if the address belongs to a
  489. function that was inlined, then this option causes the source
  490. information for all enclosing scopes back to the first non-inlined
  491. function to be printed as well. For example, if \f(CW\*(C`main\*(C'\fR inlines
  492. \&\f(CW\*(C`callee1\*(C'\fR which inlines \f(CW\*(C`callee2\*(C'\fR, and address is from
  493. \&\f(CW\*(C`callee2\*(C'\fR, the source information for \f(CW\*(C`callee1\*(C'\fR and \f(CW\*(C`main\*(C'\fR
  494. will also be printed.
  495. .IP "\fB\-n\fR" 4
  496. .IX Item "-n"
  497. .PD 0
  498. .IP "\fB\-v\fR" 4
  499. .IX Item "-v"
  500. .IP "\fB\-\-numeric\-sort\fR" 4
  501. .IX Item "--numeric-sort"
  502. .PD
  503. Sort symbols numerically by their addresses, rather than alphabetically
  504. by their names.
  505. .IP "\fB\-p\fR" 4
  506. .IX Item "-p"
  507. .PD 0
  508. .IP "\fB\-\-no\-sort\fR" 4
  509. .IX Item "--no-sort"
  510. .PD
  511. Do not bother to sort the symbols in any order; print them in the order
  512. encountered.
  513. .IP "\fB\-P\fR" 4
  514. .IX Item "-P"
  515. .PD 0
  516. .IP "\fB\-\-portability\fR" 4
  517. .IX Item "--portability"
  518. .PD
  519. Use the \s-1POSIX.2\s0 standard output format instead of the default format.
  520. Equivalent to \fB\-f posix\fR.
  521. .IP "\fB\-r\fR" 4
  522. .IX Item "-r"
  523. .PD 0
  524. .IP "\fB\-\-reverse\-sort\fR" 4
  525. .IX Item "--reverse-sort"
  526. .PD
  527. Reverse the order of the sort (whether numeric or alphabetic); let the
  528. last come first.
  529. .IP "\fB\-S\fR" 4
  530. .IX Item "-S"
  531. .PD 0
  532. .IP "\fB\-\-print\-size\fR" 4
  533. .IX Item "--print-size"
  534. .PD
  535. Print both value and size of defined symbols for the \f(CW\*(C`bsd\*(C'\fR output style.
  536. This option has no effect for object formats that do not record symbol
  537. sizes, unless \fB\-\-size\-sort\fR is also used in which case a
  538. calculated size is displayed.
  539. .IP "\fB\-s\fR" 4
  540. .IX Item "-s"
  541. .PD 0
  542. .IP "\fB\-\-print\-armap\fR" 4
  543. .IX Item "--print-armap"
  544. .PD
  545. When listing symbols from archive members, include the index: a mapping
  546. (stored in the archive by \fBar\fR or \fBranlib\fR) of which modules
  547. contain definitions for which names.
  548. .IP "\fB\-t\fR \fIradix\fR" 4
  549. .IX Item "-t radix"
  550. .PD 0
  551. .IP "\fB\-\-radix=\fR\fIradix\fR" 4
  552. .IX Item "--radix=radix"
  553. .PD
  554. Use \fIradix\fR as the radix for printing the symbol values. It must be
  555. \&\fBd\fR for decimal, \fBo\fR for octal, or \fBx\fR for hexadecimal.
  556. .IP "\fB\-u\fR" 4
  557. .IX Item "-u"
  558. .PD 0
  559. .IP "\fB\-\-undefined\-only\fR" 4
  560. .IX Item "--undefined-only"
  561. .PD
  562. Display only undefined symbols (those external to each object file).
  563. By default both defined and undefined symbols are displayed.
  564. .IP "\fB\-U\fR" 4
  565. .IX Item "-U"
  566. .PD 0
  567. .IP "\fB\-\-defined\-only\fR" 4
  568. .IX Item "--defined-only"
  569. .PD
  570. Display only defined symbols for each object file.
  571. By default both defined and undefined symbols are displayed.
  572. .IP "\fB\-V\fR" 4
  573. .IX Item "-V"
  574. .PD 0
  575. .IP "\fB\-\-version\fR" 4
  576. .IX Item "--version"
  577. .PD
  578. Show the version number of \fBnm\fR and exit.
  579. .IP "\fB\-X\fR" 4
  580. .IX Item "-X"
  581. This option is ignored for compatibility with the \s-1AIX\s0 version of
  582. \&\fBnm\fR. It takes one parameter which must be the string
  583. \&\fB32_64\fR. The default mode of \s-1AIX\s0 \fBnm\fR corresponds
  584. to \fB\-X 32\fR, which is not supported by \s-1GNU\s0 \fBnm\fR.
  585. .IP "\fB\-\-plugin\fR \fIname\fR" 4
  586. .IX Item "--plugin name"
  587. Load the plugin called \fIname\fR to add support for extra target
  588. types. This option is only available if the toolchain has been built
  589. with plugin support enabled.
  590. .Sp
  591. If \fB\-\-plugin\fR is not provided, but plugin support has been
  592. enabled then \fBnm\fR iterates over the files in
  593. \&\fI${libdir}/bfd\-plugins\fR in alphabetic order and the first
  594. plugin that claims the object in question is used.
  595. .Sp
  596. Please note that this plugin search directory is \fInot\fR the one
  597. used by \fBld\fR's \fB\-plugin\fR option. In order to make
  598. \&\fBnm\fR use the linker plugin it must be copied into the
  599. \&\fI${libdir}/bfd\-plugins\fR directory. For \s-1GCC\s0 based compilations
  600. the linker plugin is called \fIliblto_plugin.so.0.0.0\fR. For Clang
  601. based compilations it is called \fILLVMgold.so\fR. The \s-1GCC\s0 plugin
  602. is always backwards compatible with earlier versions, so it is
  603. sufficient to just copy the newest one.
  604. .IP "\fB\-\-size\-sort\fR" 4
  605. .IX Item "--size-sort"
  606. Sort symbols by size. For \s-1ELF\s0 objects symbol sizes are read from the
  607. \&\s-1ELF,\s0 for other object types the symbol sizes are computed as the
  608. difference between the value of the symbol and the value of the symbol
  609. with the next higher value. If the \f(CW\*(C`bsd\*(C'\fR output format is used
  610. the size of the symbol is printed, rather than the value, and
  611. \&\fB\-S\fR must be used in order both size and value to be printed.
  612. .Sp
  613. Note \- this option does not work if \fB\-\-undefined\-only\fR has been
  614. enabled as undefined symbols have no size.
  615. .IP "\fB\-\-special\-syms\fR" 4
  616. .IX Item "--special-syms"
  617. Display symbols which have a target-specific special meaning. These
  618. symbols are usually used by the target for some special processing and
  619. are not normally helpful when included in the normal symbol lists.
  620. For example for \s-1ARM\s0 targets this option would skip the mapping symbols
  621. used to mark transitions between \s-1ARM\s0 code, \s-1THUMB\s0 code and data.
  622. .IP "\fB\-\-synthetic\fR" 4
  623. .IX Item "--synthetic"
  624. Include synthetic symbols in the output. These are special symbols
  625. created by the linker for various purposes. They are not shown by
  626. default since they are not part of the binary's original source code.
  627. .IP "\fB\-\-unicode=\fR\fI[default|invalid|locale|escape|hex|highlight]\fR" 4
  628. .IX Item "--unicode=[default|invalid|locale|escape|hex|highlight]"
  629. Controls the display of \s-1UTF\-8\s0 encoded multibyte characters in strings.
  630. The default (\fB\-\-unicode=default\fR) is to give them no special
  631. treatment. The \fB\-\-unicode=locale\fR option displays the sequence
  632. in the current locale, which may or may not support them. The options
  633. \&\fB\-\-unicode=hex\fR and \fB\-\-unicode=invalid\fR display them as
  634. hex byte sequences enclosed by either angle brackets or curly braces.
  635. .Sp
  636. The \fB\-\-unicode=escape\fR option displays them as escape sequences
  637. (\fI\euxxxx\fR) and the \fB\-\-unicode=highlight\fR option displays
  638. them as escape sequences highlighted in red (if supported by the
  639. output device). The colouring is intended to draw attention to the
  640. presence of unicode sequences where they might not be expected.
  641. .IP "\fB\-W\fR" 4
  642. .IX Item "-W"
  643. .PD 0
  644. .IP "\fB\-\-no\-weak\fR" 4
  645. .IX Item "--no-weak"
  646. .PD
  647. Do not display weak symbols.
  648. .IP "\fB\-\-with\-symbol\-versions\fR" 4
  649. .IX Item "--with-symbol-versions"
  650. .PD 0
  651. .IP "\fB\-\-without\-symbol\-versions\fR" 4
  652. .IX Item "--without-symbol-versions"
  653. .PD
  654. Enables or disables the display of symbol version information. The
  655. version string is displayed as a suffix to the symbol name, preceded
  656. by an @ character. For example \fBfoo@VER_1\fR. If the version is
  657. the default version to be used when resolving unversioned references
  658. to the symbol then it is displayed as a suffix preceded by two @
  659. characters. For example \fBfoo@@VER_2\fR. By default, symbol
  660. version information is displayed.
  661. .IP "\fB\-\-target=\fR\fIbfdname\fR" 4
  662. .IX Item "--target=bfdname"
  663. Specify an object code format other than your system's default format.
  664. .IP "\fB@\fR\fIfile\fR" 4
  665. .IX Item "@file"
  666. Read command-line options from \fIfile\fR. The options read are
  667. inserted in place of the original @\fIfile\fR option. If \fIfile\fR
  668. does not exist, or cannot be read, then the option will be treated
  669. literally, and not removed.
  670. .Sp
  671. Options in \fIfile\fR are separated by whitespace. A whitespace
  672. character may be included in an option by surrounding the entire
  673. option in either single or double quotes. Any character (including a
  674. backslash) may be included by prefixing the character to be included
  675. with a backslash. The \fIfile\fR may itself contain additional
  676. @\fIfile\fR options; any such options will be processed recursively.
  677. .SH "SEE ALSO"
  678. .IX Header "SEE ALSO"
  679. \&\fBar\fR\|(1), \fBobjdump\fR\|(1), \fBranlib\fR\|(1), and the Info entries for \fIbinutils\fR.
  680. .SH "COPYRIGHT"
  681. .IX Header "COPYRIGHT"
  682. Copyright (c) 1991\-2022 Free Software Foundation, Inc.
  683. .PP
  684. Permission is granted to copy, distribute and/or modify this document
  685. under the terms of the \s-1GNU\s0 Free Documentation License, Version 1.3
  686. or any later version published by the Free Software Foundation;
  687. with no Invariant Sections, with no Front-Cover Texts, and with no
  688. Back-Cover Texts. A copy of the license is included in the
  689. section entitled \*(L"\s-1GNU\s0 Free Documentation License\*(R".