binutils/dlltool.1

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   2 ''' $RCSfile$$Revision$$Date$
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   5 ''' Revision 1.1  2001/03/25 20:32:25  nickc
   6 ''' Automate generate on man pages
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  41 '''     Bell System Logo is used as a dummy character.
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  49 .ds L" ""
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  51 '''   \*(M", \*(S", \*(N" and \*(T" are the equivalent of
  52 '''   \*(L" and \*(R", except that they are used on ".xx" lines,
  53 '''   such as .IP and .SH, which do another additional levels of
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  99 .TH DLLTOOL.1 1 "binutils-2.11.90" "23/Mar/101" "GNU"
 100 .UC
 101 .if n .hy 0
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 188 .       ds oe oe
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 190 .\}
 191 .rm #[ #] #H #V #F C
 192 .SH "NAME"
 193 dlltool \- Create files needed to build and use DLLs.
 194 .SH "SYNOPSIS"
 195 dlltool [\-d|--input-def \fIdef-file-name\fR]
 196         [\-b|--base-file \fIbase-file-name\fR]
 197         [\-e|--output-exp \fIexports-file-name\fR]
 198         [\-z|--output-def \fIdef-file-name\fR]
 199         [\-l|--output-lib \fIlibrary-file-name\fR]
 200         [--export-all-symbols] [--no-export-all-symbols]
 201         [--exclude-symbols \fIlist\fR]
 202         [--no-default-excludes]
 203         [\-S|--as \fIpath-to-assembler\fR] [\-f|--as-flags \fIoptions\fR]
 204         [\-D|--dllname \fIname\fR] [\-m|--machine \fImachine\fR]
 205         [\-a|--add-indirect] [\-U|--add-underscore] [\-k|--kill-at]
 206         [\-A|--add-stdcall-alias]
 207         [\-x|--no-idata4] [\-c|--no-idata5] [\-i|--interwork]
 208         [\-n|--nodelete] [\-v|--verbose] [\-h|--help] [\-V|--version]
 209         [object-file ...]
 210 .SH "DESCRIPTION"
 211 \f(CWdlltool\fR reads its inputs, which can come from the \fB\-d\fR and
 212 \fB\-b\fR options as well as object files specified on the command
 213 line.  It then processes these inputs and if the \fB\-e\fR option has
 214 been specified it creates a exports file.  If the \fB\-l\fR option
 215 has been specified it creates a library file and if the \fB\-z\fR option
 216 has been specified it creates a def file.  Any or all of the \-e, \-l
 217 and \-z options can be present in one invocation of dlltool.
 218 .PP
 219 When creating a DLL, along with the source for the DLL, it is necessary
 220 to have three other files.  \f(CWdlltool\fR can help with the creation of
 221 these files.
 222 .PP
 223 The first file is a \fB.def\fR file which specifies which functions are
 224 exported from the DLL, which functions the DLL imports, and so on.  This
 225 is a text file and can be created by hand, or \f(CWdlltool\fR can be used
 226 to create it using the \fB\-z\fR option.  In this case \f(CWdlltool\fR
 227 will scan the object files specified on its command line looking for
 228 those functions which have been specially marked as being exported and
 229 put entries for them in the .def file it creates.
 230 .PP
 231 In order to mark a function as being exported from a DLL, it needs to
 232 have an \fB\-export:<name_of_function>\fR entry in the \fB.drectve\fR
 233 section of the object file.  This can be done in C by using the
 234 \fIasm()\fR operator:
 235 .PP
 236 .Vb 5
 237 \&
 238 \&          asm (".section .drectve");
 239 \&          asm (".ascii \e"-export:my_func\e"");
 240 \&
 241 \&          int my_func (void) { ... }
 242 .Ve
 243 The second file needed for DLL creation is an exports file.  This file
 244 is linked with the object files that make up the body of the DLL and it
 245 handles the interface between the DLL and the outside world.  This is a
 246 binary file and it can be created by giving the \fB\-e\fR option to
 247 \f(CWdlltool\fR when it is creating or reading in a .def file.
 248 .PP
 249 The third file needed for DLL creation is the library file that programs
 250 will link with in order to access the functions in the DLL.  This file
 251 can be created by giving the \fB\-l\fR option to dlltool when it
 252 is creating or reading in a .def file.
 253 .PP
 254 \f(CWdlltool\fR builds the library file by hand, but it builds the
 255 exports file by creating temporary files containing assembler statements
 256 and then assembling these.  The \fB\-S\fR command line option can be
 257 used to specify the path to the assembler that dlltool will use,
 258 and the \fB\-f\fR option can be used to pass specific flags to that
 259 assembler.  The \fB\-n\fR can be used to prevent dlltool from deleting
 260 these temporary assembler files when it is done, and if \fB\-n\fR is
 261 specified twice then this will prevent dlltool from deleting the
 262 temporary object files it used to build the library.
 263 .PP
 264 Here is an example of creating a DLL from a source file \fBdll.c\fR and
 265 also creating a program (from an object file called \fBprogram.o\fR)
 266 that uses that DLL:
 267 .PP
 268 .Vb 5
 269 \&
 270 \&          gcc -c dll.c
 271 \&          dlltool -e exports.o -l dll.lib dll.o
 272 \&          gcc dll.o exports.o -o dll.dll
 273 \&          gcc program.o dll.lib -o program
 274 .Ve
 275 .SH "OPTIONS"
 276 The command line options have the following meanings:
 277 .Ip "\f(CW-d \fIfilename\fR\fR" 4
 278 .Ip "\f(CW--input-def \fIfilename\fR\fR" 4
 279 Specifies the name of a .def file to be read in and processed.
 280 .Ip "\f(CW-b \fIfilename\fR\fR" 4
 281 .Ip "\f(CW--base-file \fIfilename\fR\fR" 4
 282 Specifies the name of a base file to be read in and processed.  The
 283 contents of this file will be added to the relocation section in the
 284 exports file generated by dlltool.
 285 .Ip "\f(CW-e \fIfilename\fR\fR" 4
 286 .Ip "\f(CW--output-exp \fIfilename\fR\fR" 4
 287 Specifies the name of the export file to be created by dlltool.
 288 .Ip "\f(CW-z \fIfilename\fR\fR" 4
 289 .Ip "\f(CW--output-def \fIfilename\fR\fR" 4
 290 Specifies the name of the .def file to be created by dlltool.
 291 .Ip "\f(CW-l \fIfilename\fR\fR" 4
 292 .Ip "\f(CW--output-lib \fIfilename\fR\fR" 4
 293 Specifies the name of the library file to be created by dlltool.
 294 .Ip "\f(CW--export-all-symbols\fR" 4
 295 Treat all global and weak defined symbols found in the input object
 296 files as symbols to be exported.  There is a small list of symbols which
 297 are not exported by default; see the \f(CW--no-default-excludes\fR
 298 option.  You may add to the list of symbols to not export by using the
 299 \f(CW--exclude-symbols\fR option.
 300 .Ip "\f(CW--no-export-all-symbols\fR" 4
 301 Only export symbols explicitly listed in an input .def file or in
 302 \&\fB.drectve\fR sections in the input object files.  This is the default
 303 behaviour.  The \fB.drectve\fR sections are created by \fBdllexport\fR
 304 attributes in the source code.
 305 .Ip "\f(CW--exclude-symbols \fIlist\fR\fR" 4
 306 Do not export the symbols in \fIlist\fR.  This is a list of symbol names
 307 separated by comma or colon characters.  The symbol names should not
 308 contain a leading underscore.  This is only meaningful when
 309 \f(CW--export-all-symbols\fR is used.
 310 .Ip "\f(CW--no-default-excludes\fR" 4
 311 When \f(CW--export-all-symbols\fR is used, it will by default avoid
 312 exporting certain special symbols.  The current list of symbols to avoid
 313 exporting is \fBDllMain@12\fR, \fBDllEntryPoint@0\fR,
 314 \fBimpure_ptr\fR.  You may use the \f(CW--no-default-excludes\fR option
 315 to go ahead and export these special symbols.  This is only meaningful
 316 when \f(CW--export-all-symbols\fR is used.
 317 .Ip "\f(CW-S \fIpath\fR\fR" 4
 318 .Ip "\f(CW--as \fIpath\fR\fR" 4
 319 Specifies the path, including the filename, of the assembler to be used
 320 to create the exports file.
 321 .Ip "\f(CW-f \fIswitches\fR\fR" 4
 322 .Ip "\f(CW--as-flags \fIswitches\fR\fR" 4
 323 Specifies any specific command line switches to be passed to the
 324 assembler when building the exports file.  This option will work even if
 325 the \fB\-S\fR option is not used.  This option only takes one argument,
 326 and if it occurs more than once on the command line, then later
 327 occurrences will override earlier occurrences.  So if it is necessary to
 328 pass multiple switches to the assembler they should be enclosed in
 329 double quotes.
 330 .Ip "\f(CW-D \fIname\fR\fR" 4
 331 .Ip "\f(CW--dll-name \fIname\fR\fR" 4
 332 Specifies the name to be stored in the .def file as the name of the \s-1DLL\s0
 333 when the \fB\-e\fR option is used.  If this option is not present, then
 334 the filename given to the \fB\-e\fR option will be used as the name of
 335 the \s-1DLL\s0.
 336 .Ip "\f(CW-m \fImachine\fR\fR" 4
 337 .Ip "\f(CW-machine \fImachine\fR\fR" 4
 338 Specifies the type of machine for which the library file should be
 339 built.  \f(CWdlltool\fR has a built in default type, depending upon how
 340 it was created, but this option can be used to override that.  This is
 341 normally only useful when creating DLLs for an \s-1ARM\s0 processor, when the
 342 contents of the \s-1DLL\s0 are actually encode using \s-1THUMB\s0 instructions.
 343 .Ip "\f(CW-a\fR" 4
 344 .Ip "\f(CW--add-indirect\fR" 4
 345 Specifies that when \f(CWdlltool\fR is creating the exports file it
 346 should add a section which allows the exported functions to be
 347 referenced without using the import library.  Whatever the hell that
 348 means!
 349 .Ip "\f(CW-U\fR" 4
 350 .Ip "\f(CW--add-underscore\fR" 4
 351 Specifies that when \f(CWdlltool\fR is creating the exports file it
 352 should prepend an underscore to the names of the exported functions.
 353 .Ip "\f(CW-k\fR" 4
 354 .Ip "\f(CW--kill-at\fR" 4
 355 Specifies that when \f(CWdlltool\fR is creating the exports file it
 356 should not append the string \fB@ <number>\fR.  These numbers are
 357 called ordinal numbers and they represent another way of accessing the
 358 function in a \s-1DLL\s0, other than by name.
 359 .Ip "\f(CW-A\fR" 4
 360 .Ip "\f(CW--add-stdcall-alias\fR" 4
 361 Specifies that when \f(CWdlltool\fR is creating the exports file it
 362 should add aliases for stdcall symbols without \fB@ <number>\fR
 363 in addition to the symbols with \fB@ <number>\fR.
 364 .Ip "\f(CW-x\fR" 4
 365 .Ip "\f(CW--no-idata4\fR" 4
 366 Specifies that when \f(CWdlltool\fR is creating the exports and library
 367 files it should omit the .idata4 section.  This is for compatibility
 368 with certain operating systems.
 369 .Ip "\f(CW-c\fR" 4
 370 .Ip "\f(CW--no-idata5\fR" 4
 371 Specifies that when \f(CWdlltool\fR is creating the exports and library
 372 files it should omit the .idata5 section.  This is for compatibility
 373 with certain operating systems.
 374 .Ip "\f(CW-i\fR" 4
 375 .Ip "\f(CW--interwork\fR" 4
 376 Specifies that \f(CWdlltool\fR should mark the objects in the library
 377 file and exports file that it produces as supporting interworking
 378 between \s-1ARM\s0 and \s-1THUMB\s0 code.
 379 .Ip "\f(CW-n\fR" 4
 380 .Ip "\f(CW--nodelete\fR" 4
 381 Makes \f(CWdlltool\fR preserve the temporary assembler files it used to
 382 create the exports file.  If this option is repeated then dlltool will
 383 also preserve the temporary object files it uses to create the library
 384 file.
 385 .Ip "\f(CW-v\fR" 4
 386 .Ip "\f(CW--verbose\fR" 4
 387 Make dlltool describe what it is doing.
 388 .Ip "\f(CW-h\fR" 4
 389 .Ip "\f(CW--help\fR" 4
 390 Displays a list of command line options and then exits.
 391 .Ip "\f(CW-V\fR" 4
 392 .Ip "\f(CW--version\fR" 4
 393 Displays dlltool's version number and then exits.
 394 .SH "SEE ALSO"
 395 the Info entries for \fIbinutils\fR.
 396 .SH "COPYRIGHT"
 397 Copyright (c) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 2001 Free Software Foundation, Inc.
 398 .PP
 399 Permission is granted to copy, distribute and/or modify this document
 400 under the terms of the GNU Free Documentation License, Version 1.1
 401 or any later version published by the Free Software Foundation;
 402 with no Invariant Sections, with no Front-Cover Texts, and with no
 403 Back-Cover Texts.  A copy of the license is included in the
 404 section entitled \*(L"GNU Free Documentation License\*(R".
 405
 406 .rn }` ''
 407 .IX Title "DLLTOOL.1 1"
 408 .IX Name "dlltool - Create files needed to build and use DLLs."
 409
 410 .IX Header "NAME"
 411
 412 .IX Header "SYNOPSIS"
 413
 414 .IX Header "DESCRIPTION"
 415
 416 .IX Header "OPTIONS"
 417
 418 .IX Item "\f(CW-d \fIfilename\fR\fR"
 419
 420 .IX Item "\f(CW--input-def \fIfilename\fR\fR"
 421
 422 .IX Item "\f(CW-b \fIfilename\fR\fR"
 423
 424 .IX Item "\f(CW--base-file \fIfilename\fR\fR"
 425
 426 .IX Item "\f(CW-e \fIfilename\fR\fR"
 427
 428 .IX Item "\f(CW--output-exp \fIfilename\fR\fR"
 429
 430 .IX Item "\f(CW-z \fIfilename\fR\fR"
 431
 432 .IX Item "\f(CW--output-def \fIfilename\fR\fR"
 433
 434 .IX Item "\f(CW-l \fIfilename\fR\fR"
 435
 436 .IX Item "\f(CW--output-lib \fIfilename\fR\fR"
 437
 438 .IX Item "\f(CW--export-all-symbols\fR"
 439
 440 .IX Item "\f(CW--no-export-all-symbols\fR"
 441
 442 .IX Item "\f(CW--exclude-symbols \fIlist\fR\fR"
 443
 444 .IX Item "\f(CW--no-default-excludes\fR"
 445
 446 .IX Item "\f(CW-S \fIpath\fR\fR"
 447
 448 .IX Item "\f(CW--as \fIpath\fR\fR"
 449
 450 .IX Item "\f(CW-f \fIswitches\fR\fR"
 451
 452 .IX Item "\f(CW--as-flags \fIswitches\fR\fR"
 453
 454 .IX Item "\f(CW-D \fIname\fR\fR"
 455
 456 .IX Item "\f(CW--dll-name \fIname\fR\fR"
 457
 458 .IX Item "\f(CW-m \fImachine\fR\fR"
 459
 460 .IX Item "\f(CW-machine \fImachine\fR\fR"
 461
 462 .IX Item "\f(CW-a\fR"
 463
 464 .IX Item "\f(CW--add-indirect\fR"
 465
 466 .IX Item "\f(CW-U\fR"
 467
 468 .IX Item "\f(CW--add-underscore\fR"
 469
 470 .IX Item "\f(CW-k\fR"
 471
 472 .IX Item "\f(CW--kill-at\fR"
 473
 474 .IX Item "\f(CW-A\fR"
 475
 476 .IX Item "\f(CW--add-stdcall-alias\fR"
 477
 478 .IX Item "\f(CW-x\fR"
 479
 480 .IX Item "\f(CW--no-idata4\fR"
 481
 482 .IX Item "\f(CW-c\fR"
 483
 484 .IX Item "\f(CW--no-idata5\fR"
 485
 486 .IX Item "\f(CW-i\fR"
 487
 488 .IX Item "\f(CW--interwork\fR"
 489
 490 .IX Item "\f(CW-n\fR"
 491
 492 .IX Item "\f(CW--nodelete\fR"
 493
 494 .IX Item "\f(CW-v\fR"
 495
 496 .IX Item "\f(CW--verbose\fR"
 497
 498 .IX Item "\f(CW-h\fR"
 499
 500 .IX Item "\f(CW--help\fR"
 501
 502 .IX Item "\f(CW-V\fR"
 503
 504 .IX Item "\f(CW--version\fR"
 505
 506 .IX Header "SEE ALSO"
 507
 508 .IX Header "COPYRIGHT"
 509