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1 | \input texinfo.tex @c -*-texinfo-*- |
2 | @c @ifnothtml | |
3 | @c %**start of header | |
d7f8491b | 4 | @setfilename gccinstall.info |
f42974dc DW |
5 | @settitle Installing GCC |
6 | @setchapternewpage odd | |
7 | @c %**end of header | |
8 | @c @end ifnothtml | |
9 | ||
7771bb62 BM |
10 | @include gcc-common.texi |
11 | ||
f42974dc DW |
12 | @c Specify title for specific html page |
13 | @ifset indexhtml | |
14 | @settitle Installing GCC | |
15 | @end ifset | |
16 | @ifset specifichtml | |
17 | @settitle Host/Target specific installation notes for GCC | |
18 | @end ifset | |
67b1fbb9 KG |
19 | @ifset prerequisiteshtml |
20 | @settitle Prerequisites for GCC | |
21 | @end ifset | |
f42974dc DW |
22 | @ifset downloadhtml |
23 | @settitle Downloading GCC | |
24 | @end ifset | |
25 | @ifset configurehtml | |
26 | @settitle Installing GCC: Configuration | |
27 | @end ifset | |
28 | @ifset buildhtml | |
29 | @settitle Installing GCC: Building | |
30 | @end ifset | |
31 | @ifset testhtml | |
32 | @settitle Installing GCC: Testing | |
33 | @end ifset | |
34 | @ifset finalinstallhtml | |
35 | @settitle Installing GCC: Final installation | |
36 | @end ifset | |
37 | @ifset binarieshtml | |
38 | @settitle Installing GCC: Binaries | |
39 | @end ifset | |
73e2155a JM |
40 | @ifset oldhtml |
41 | @settitle Installing GCC: Old documentation | |
42 | @end ifset | |
aed5964b JM |
43 | @ifset gfdlhtml |
44 | @settitle Installing GCC: GNU Free Documentation License | |
45 | @end ifset | |
f42974dc | 46 | |
aed5964b | 47 | @c Copyright (C) 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
977f7997 DK |
48 | @c 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, |
49 | @c 2010 Free Software Foundation, Inc. | |
f42974dc DW |
50 | @c *** Converted to texinfo by Dean Wakerley, dean@wakerley.com |
51 | ||
d7f755c3 PB |
52 | @c IMPORTANT: whenever you modify this file, run `install.texi2html' to |
53 | @c test the generation of HTML documents for the gcc.gnu.org web pages. | |
54 | @c | |
55 | @c Do not use @footnote{} in this file as it breaks install.texi2html! | |
56 | ||
f42974dc DW |
57 | @c Include everything if we're not making html |
58 | @ifnothtml | |
59 | @set indexhtml | |
60 | @set specifichtml | |
67b1fbb9 | 61 | @set prerequisiteshtml |
f42974dc DW |
62 | @set downloadhtml |
63 | @set configurehtml | |
64 | @set buildhtml | |
65 | @set testhtml | |
66 | @set finalinstallhtml | |
67 | @set binarieshtml | |
73e2155a | 68 | @set oldhtml |
aed5964b | 69 | @set gfdlhtml |
f42974dc DW |
70 | @end ifnothtml |
71 | ||
72 | @c Part 2 Summary Description and Copyright | |
bdefb2ab | 73 | @copying |
70b1e376 | 74 | Copyright @copyright{} 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, |
07a67d6a GP |
75 | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, |
76 | 2010 Free Software Foundation, Inc. | |
aed5964b JM |
77 | @sp 1 |
78 | Permission is granted to copy, distribute and/or modify this document | |
07a67d6a | 79 | under the terms of the GNU Free Documentation License, Version 1.3 or |
aed5964b JM |
80 | any later version published by the Free Software Foundation; with no |
81 | Invariant Sections, the Front-Cover texts being (a) (see below), and | |
82 | with the Back-Cover Texts being (b) (see below). A copy of the | |
83 | license is included in the section entitled ``@uref{./gfdl.html,,GNU | |
84 | Free Documentation License}''. | |
85 | ||
86 | (a) The FSF's Front-Cover Text is: | |
87 | ||
88 | A GNU Manual | |
89 | ||
90 | (b) The FSF's Back-Cover Text is: | |
91 | ||
92 | You have freedom to copy and modify this GNU Manual, like GNU | |
93 | software. Copies published by the Free Software Foundation raise | |
94 | funds for GNU development. | |
bdefb2ab | 95 | @end copying |
f42974dc | 96 | @ifinfo |
bdefb2ab | 97 | @insertcopying |
f42974dc | 98 | @end ifinfo |
c3cb54c6 | 99 | @dircategory Software development |
802f6d4b JM |
100 | @direntry |
101 | * gccinstall: (gccinstall). Installing the GNU Compiler Collection. | |
102 | @end direntry | |
f42974dc DW |
103 | |
104 | @c Part 3 Titlepage and Copyright | |
105 | @titlepage | |
7771bb62 BM |
106 | @title Installing GCC |
107 | @versionsubtitle | |
f42974dc DW |
108 | |
109 | @c The following two commands start the copyright page. | |
110 | @page | |
ef88b07d | 111 | @vskip 0pt plus 1filll |
bdefb2ab | 112 | @insertcopying |
f42974dc DW |
113 | @end titlepage |
114 | ||
7771bb62 | 115 | @c Part 4 Top node, Master Menu, and/or Table of Contents |
f42974dc DW |
116 | @ifinfo |
117 | @node Top, , , (dir) | |
118 | @comment node-name, next, Previous, up | |
119 | ||
120 | @menu | |
121 | * Installing GCC:: This document describes the generic installation | |
122 | procedure for GCC as well as detailing some target | |
f9047ed3 | 123 | specific installation instructions. |
f42974dc DW |
124 | |
125 | * Specific:: Host/target specific installation notes for GCC. | |
126 | * Binaries:: Where to get pre-compiled binaries. | |
127 | ||
73e2155a JM |
128 | * Old:: Old installation documentation. |
129 | ||
aed5964b | 130 | * GNU Free Documentation License:: How you can copy and share this manual. |
f42974dc DW |
131 | * Concept Index:: This index has two entries. |
132 | @end menu | |
133 | @end ifinfo | |
134 | ||
7771bb62 BM |
135 | @iftex |
136 | @contents | |
137 | @end iftex | |
138 | ||
f42974dc DW |
139 | @c Part 5 The Body of the Document |
140 | @c ***Installing GCC********************************************************** | |
6cfb3f16 | 141 | @ifnothtml |
f42974dc DW |
142 | @comment node-name, next, previous, up |
143 | @node Installing GCC, Binaries, , Top | |
6cfb3f16 | 144 | @end ifnothtml |
f42974dc | 145 | @ifset indexhtml |
f42974dc DW |
146 | @ifnothtml |
147 | @chapter Installing GCC | |
148 | @end ifnothtml | |
149 | ||
150 | The latest version of this document is always available at | |
f9047ed3 | 151 | @uref{http://gcc.gnu.org/install/,,http://gcc.gnu.org/install/}. |
f42974dc DW |
152 | |
153 | This document describes the generic installation procedure for GCC as well | |
f9047ed3 | 154 | as detailing some target specific installation instructions. |
f42974dc | 155 | |
f9047ed3 JM |
156 | GCC includes several components that previously were separate distributions |
157 | with their own installation instructions. This document supersedes all | |
eea81d3e | 158 | package specific installation instructions. |
f42974dc | 159 | |
f9047ed3 | 160 | @emph{Before} starting the build/install procedure please check the |
f42974dc | 161 | @ifnothtml |
eea81d3e | 162 | @ref{Specific, host/target specific installation notes}. |
f42974dc | 163 | @end ifnothtml |
c009f01f | 164 | @ifhtml |
f9047ed3 | 165 | @uref{specific.html,,host/target specific installation notes}. |
c009f01f | 166 | @end ifhtml |
f9047ed3 | 167 | We recommend you browse the entire generic installation instructions before |
f42974dc DW |
168 | you proceed. |
169 | ||
c009f01f | 170 | Lists of successful builds for released versions of GCC are |
daf2f129 | 171 | available at @uref{http://gcc.gnu.org/buildstat.html}. |
c009f01f JJ |
172 | These lists are updated as new information becomes available. |
173 | ||
f9047ed3 | 174 | The installation procedure itself is broken into five steps. |
f42974dc DW |
175 | |
176 | @ifinfo | |
177 | @menu | |
67b1fbb9 | 178 | * Prerequisites:: |
f42974dc DW |
179 | * Downloading the source:: |
180 | * Configuration:: | |
181 | * Building:: | |
182 | * Testing:: (optional) | |
183 | * Final install:: | |
184 | @end menu | |
185 | @end ifinfo | |
c009f01f | 186 | @ifhtml |
f42974dc | 187 | @enumerate |
f9047ed3 | 188 | @item |
67b1fbb9 KG |
189 | @uref{prerequisites.html,,Prerequisites} |
190 | @item | |
f42974dc | 191 | @uref{download.html,,Downloading the source} |
f42974dc | 192 | @item |
f9047ed3 JM |
193 | @uref{configure.html,,Configuration} |
194 | @item | |
195 | @uref{build.html,,Building} | |
196 | @item | |
197 | @uref{test.html,,Testing} (optional) | |
f42974dc DW |
198 | @item |
199 | @uref{finalinstall.html,,Final install} | |
200 | @end enumerate | |
c009f01f | 201 | @end ifhtml |
f42974dc | 202 | |
38209993 | 203 | Please note that GCC does not support @samp{make uninstall} and probably |
f9047ed3 | 204 | won't do so in the near future as this would open a can of worms. Instead, |
f42974dc | 205 | we suggest that you install GCC into a directory of its own and simply |
38209993 | 206 | remove that directory when you do not need that specific version of GCC |
eea81d3e RO |
207 | any longer, and, if shared libraries are installed there as well, no |
208 | more binaries exist that use them. | |
f42974dc | 209 | |
73e2155a JM |
210 | @ifhtml |
211 | There are also some @uref{old.html,,old installation instructions}, | |
212 | which are mostly obsolete but still contain some information which has | |
213 | not yet been merged into the main part of this manual. | |
214 | @end ifhtml | |
215 | ||
f42974dc | 216 | @html |
b8db17af | 217 | <hr /> |
f42974dc DW |
218 | <p> |
219 | @end html | |
220 | @ifhtml | |
221 | @uref{./index.html,,Return to the GCC Installation page} | |
aed5964b | 222 | |
bdefb2ab | 223 | @insertcopying |
f42974dc DW |
224 | @end ifhtml |
225 | @end ifset | |
226 | ||
67b1fbb9 KG |
227 | @c ***Prerequisites************************************************** |
228 | @ifnothtml | |
229 | @comment node-name, next, previous, up | |
230 | @node Prerequisites, Downloading the source, , Installing GCC | |
231 | @end ifnothtml | |
232 | @ifset prerequisiteshtml | |
233 | @ifnothtml | |
234 | @chapter Prerequisites | |
235 | @end ifnothtml | |
236 | @cindex Prerequisites | |
237 | ||
238 | GCC requires that various tools and packages be available for use in the | |
239 | build procedure. Modifying GCC sources requires additional tools | |
240 | described below. | |
241 | ||
242 | @heading Tools/packages necessary for building GCC | |
243 | @table @asis | |
244 | @item ISO C90 compiler | |
80521187 | 245 | Necessary to bootstrap GCC, although versions of GCC prior |
67b1fbb9 KG |
246 | to 3.4 also allow bootstrapping with a traditional (K&R) C compiler. |
247 | ||
80521187 | 248 | To build all languages in a cross-compiler or other configuration where |
67b1fbb9 KG |
249 | 3-stage bootstrap is not performed, you need to start with an existing |
250 | GCC binary (version 2.95 or later) because source code for language | |
251 | frontends other than C might use GCC extensions. | |
252 | ||
253 | @item GNAT | |
254 | ||
255 | In order to build the Ada compiler (GNAT) you must already have GNAT | |
256 | installed because portions of the Ada frontend are written in Ada (with | |
257 | GNAT extensions.) Refer to the Ada installation instructions for more | |
258 | specific information. | |
259 | ||
260 | @item A ``working'' POSIX compatible shell, or GNU bash | |
261 | ||
262 | Necessary when running @command{configure} because some | |
263 | @command{/bin/sh} shells have bugs and may crash when configuring the | |
80521187 GP |
264 | target libraries. In other cases, @command{/bin/sh} or @command{ksh} |
265 | have disastrous corner-case performance problems. This | |
67b1fbb9 KG |
266 | can cause target @command{configure} runs to literally take days to |
267 | complete in some cases. | |
268 | ||
269 | So on some platforms @command{/bin/ksh} is sufficient, on others it | |
270 | isn't. See the host/target specific instructions for your platform, or | |
271 | use @command{bash} to be sure. Then set @env{CONFIG_SHELL} in your | |
272 | environment to your ``good'' shell prior to running | |
273 | @command{configure}/@command{make}. | |
274 | ||
daf2f129 | 275 | @command{zsh} is not a fully compliant POSIX shell and will not |
8a36672b | 276 | work when configuring GCC@. |
1b49d06f | 277 | |
3f737aa9 RW |
278 | @item A POSIX or SVR4 awk |
279 | ||
280 | Necessary for creating some of the generated source files for GCC@. | |
281 | If in doubt, use a recent GNU awk version, as some of the older ones | |
282 | are broken. GNU awk version 3.1.5 is known to work. | |
283 | ||
67b1fbb9 KG |
284 | @item GNU binutils |
285 | ||
286 | Necessary in some circumstances, optional in others. See the | |
287 | host/target specific instructions for your platform for the exact | |
288 | requirements. | |
289 | ||
290 | @item gzip version 1.2.4 (or later) or | |
291 | @itemx bzip2 version 1.0.2 (or later) | |
292 | ||
293 | Necessary to uncompress GCC @command{tar} files when source code is | |
294 | obtained via FTP mirror sites. | |
295 | ||
6cba282a | 296 | @item GNU make version 3.80 (or later) |
e158a5fb | 297 | |
8a36672b | 298 | You must have GNU make installed to build GCC@. |
e158a5fb | 299 | |
f44a5ab6 | 300 | @item GNU tar version 1.14 (or later) |
67b1fbb9 KG |
301 | |
302 | Necessary (only on some platforms) to untar the source code. Many | |
303 | systems' @command{tar} programs will also work, only try GNU | |
304 | @command{tar} if you have problems. | |
305 | ||
362c6d2f | 306 | @item GNU Multiple Precision Library (GMP) version 4.3.2 (or later) |
bda4d063 | 307 | |
0ee2ea09 | 308 | Necessary to build GCC@. If you do not have it installed in your |
70ec446f | 309 | library search path, you will have to configure with the |
c02c7cb1 TS |
310 | @option{--with-gmp} configure option. See also @option{--with-gmp-lib} |
311 | and @option{--with-gmp-include}. Alternatively, if a GMP source | |
312 | distribution is found in a subdirectory of your GCC sources named | |
313 | @file{gmp}, it will be built together with GCC@. | |
bda4d063 | 314 | |
362c6d2f | 315 | @item MPFR Library version 2.4.2 (or later) |
bebf829d | 316 | |
0ee2ea09 | 317 | Necessary to build GCC@. It can be downloaded from |
a3337ea2 KG |
318 | @uref{http://www.mpfr.org/}. The @option{--with-mpfr} configure |
319 | option should be used if your MPFR Library is not installed in your | |
320 | default library search path. See also @option{--with-mpfr-lib} and | |
321 | @option{--with-mpfr-include}. Alternatively, if a MPFR source | |
322 | distribution is found in a subdirectory of your GCC sources named | |
323 | @file{mpfr}, it will be built together with GCC@. | |
641afcff | 324 | |
362c6d2f | 325 | @item MPC Library version 0.8.1 (or later) |
3a5729ea KG |
326 | |
327 | Necessary to build GCC@. It can be downloaded from | |
328 | @uref{http://www.multiprecision.org/}. The @option{--with-mpc} | |
329 | configure option should be used if your MPC Library is not installed | |
330 | in your default library search path. See also @option{--with-mpc-lib} | |
331 | and @option{--with-mpc-include}. Alternatively, if an MPC source | |
332 | distribution is found in a subdirectory of your GCC sources named | |
333 | @file{mpc}, it will be built together with GCC@. | |
334 | ||
3aea2d1c SP |
335 | @item Parma Polyhedra Library (PPL) version 0.10 |
336 | ||
337 | Necessary to build GCC with the Graphite loop optimizations. | |
338 | It can be downloaded from @uref{http://www.cs.unipr.it/ppl/Download/}. | |
339 | ||
340 | The @option{--with-ppl} configure option should be used if PPL is not | |
341 | installed in your default library search path. | |
342 | ||
343 | @item CLooG-PPL version 0.15 | |
344 | ||
345 | Necessary to build GCC with the Graphite loop optimizations. It can | |
346 | be downloaded from @uref{ftp://gcc.gnu.org/pub/gcc/infrastructure/}. | |
347 | The code in @file{cloog-ppl-0.15.tar.gz} comes from a branch of CLooG | |
348 | available from @uref{http://repo.or.cz/w/cloog-ppl.git}. CLooG-PPL | |
349 | should be configured with @option{--with-ppl}. | |
350 | ||
351 | The @option{--with-cloog} configure option should be used if CLooG is | |
352 | not installed in your default library search path. | |
bebf829d | 353 | |
02809848 | 354 | @item @command{jar}, or InfoZIP (@command{zip} and @command{unzip}) |
b52be2c8 TT |
355 | |
356 | Necessary to build libgcj, the GCJ runtime. | |
357 | ||
d7f09764 DN |
358 | @item libelf version 0.8.12 (or later) |
359 | ||
360 | Necessary to build link-time optimization (LTO) support. It can be | |
361 | downloaded from @uref{http://www.mr511.de/software/libelf-0.8.12.tar.gz}, | |
9aaa1ee8 RO |
362 | though it is commonly available in several systems. The version in |
363 | IRIX 6.5 doesn't work since it lacks @file{gelf.h}. The version in | |
8ccb78f2 | 364 | Solaris 2 does work. |
d7f09764 DN |
365 | |
366 | The @option{--with-libelf} configure option should be used if libelf is | |
367 | not installed in your default library search patch. | |
368 | ||
f9bab007 | 369 | @end table |
67b1fbb9 KG |
370 | |
371 | @heading Tools/packages necessary for modifying GCC | |
372 | @table @asis | |
70fa0efa RW |
373 | @item autoconf version 2.64 |
374 | @itemx GNU m4 version 1.4.6 (or later) | |
67b1fbb9 | 375 | |
89acbae0 | 376 | Necessary when modifying @file{configure.ac}, @file{aclocal.m4}, etc.@: |
565f8ce5 | 377 | to regenerate @file{configure} and @file{config.in} files. |
67b1fbb9 | 378 | |
4d9e8446 | 379 | @item automake version 1.11.1 |
67b1fbb9 KG |
380 | |
381 | Necessary when modifying a @file{Makefile.am} file to regenerate its | |
ce5c1cf3 KC |
382 | associated @file{Makefile.in}. |
383 | ||
384 | Much of GCC does not use automake, so directly edit the @file{Makefile.in} | |
385 | file. Specifically this applies to the @file{gcc}, @file{intl}, | |
078e3ffe PB |
386 | @file{libcpp}, @file{libiberty}, @file{libobjc} directories as well |
387 | as any of their subdirectories. | |
ce5c1cf3 | 388 | |
ae8cacc6 | 389 | For directories that use automake, GCC requires the latest release in |
4d9e8446 | 390 | the 1.11 series, which is currently 1.11.1. When regenerating a directory |
70fa0efa | 391 | to a newer version, please update all the directories using an older 1.11 |
ae8cacc6 | 392 | to the latest released version. |
ccfca4ae | 393 | |
4b794eaf | 394 | @item gettext version 0.14.5 (or later) |
4f3ce03f JM |
395 | |
396 | Needed to regenerate @file{gcc.pot}. | |
67b1fbb9 KG |
397 | |
398 | @item gperf version 2.7.2 (or later) | |
399 | ||
400 | Necessary when modifying @command{gperf} input files, e.g.@: | |
401 | @file{gcc/cp/cfns.gperf} to regenerate its associated header file, e.g.@: | |
402 | @file{gcc/cp/cfns.h}. | |
403 | ||
80521187 GP |
404 | @item DejaGnu 1.4.4 |
405 | @itemx Expect | |
406 | @itemx Tcl | |
67b1fbb9 | 407 | |
80521187 | 408 | Necessary to run the GCC testsuite; see the section on testing for details. |
67b1fbb9 KG |
409 | |
410 | @item autogen version 5.5.4 (or later) and | |
411 | @itemx guile version 1.4.1 (or later) | |
412 | ||
413 | Necessary to regenerate @file{fixinc/fixincl.x} from | |
414 | @file{fixinc/inclhack.def} and @file{fixinc/*.tpl}. | |
415 | ||
80521187 | 416 | Necessary to run @samp{make check} for @file{fixinc}. |
67b1fbb9 | 417 | |
ce5c1cf3 | 418 | Necessary to regenerate the top level @file{Makefile.in} file from |
67b1fbb9 KG |
419 | @file{Makefile.tpl} and @file{Makefile.def}. |
420 | ||
67b1fbb9 KG |
421 | @item Flex version 2.5.4 (or later) |
422 | ||
423 | Necessary when modifying @file{*.l} files. | |
424 | ||
425 | Necessary to build GCC during development because the generated output | |
80521187 | 426 | files are not included in the SVN repository. They are included in |
67b1fbb9 KG |
427 | releases. |
428 | ||
7326a39e | 429 | @item Texinfo version 4.7 (or later) |
67b1fbb9 KG |
430 | |
431 | Necessary for running @command{makeinfo} when modifying @file{*.texi} | |
432 | files to test your changes. | |
433 | ||
cc5c2741 BM |
434 | Necessary for running @command{make dvi} or @command{make pdf} to |
435 | create printable documentation in DVI or PDF format. Texinfo version | |
436 | 4.8 or later is required for @command{make pdf}. | |
437 | ||
67b1fbb9 | 438 | Necessary to build GCC documentation during development because the |
80521187 | 439 | generated output files are not included in the SVN repository. They are |
67b1fbb9 KG |
440 | included in releases. |
441 | ||
442 | @item @TeX{} (any working version) | |
443 | ||
cc5c2741 BM |
444 | Necessary for running @command{texi2dvi} and @command{texi2pdf}, which |
445 | are used when running @command{make dvi} or @command{make pdf} to create | |
446 | DVI or PDF files, respectively. | |
67b1fbb9 | 447 | |
80521187 GP |
448 | @item SVN (any version) |
449 | @itemx SSH (any version) | |
67b1fbb9 | 450 | |
80521187 | 451 | Necessary to access the SVN repository. Public releases and weekly |
8a36672b | 452 | snapshots of the development sources are also available via FTP@. |
67b1fbb9 | 453 | |
80521187 | 454 | @item Perl version 5.6.1 (or later) |
67b1fbb9 KG |
455 | |
456 | Necessary when regenerating @file{Makefile} dependencies in libiberty. | |
4f3ce03f JM |
457 | Necessary when regenerating @file{libiberty/functions.texi}. |
458 | Necessary when generating manpages from Texinfo manuals. | |
c18dc5cc | 459 | Necessary when targetting Darwin, building @samp{libstdc++}, |
a9fdd472 | 460 | and not using @option{--disable-symvers}. |
c18dc5cc RO |
461 | Necessary when targetting Solaris 2 with Sun @command{ld}, building |
462 | @samp{libstdc++}, and not using @option{--disable-symvers}. A helper | |
463 | scripts needs @samp{Glob.pm}, which is missing from @command{perl} 5.005 | |
464 | included in Solaris~8. The bundled @command{perl} in Solaris~9 and up | |
465 | works. | |
80521187 | 466 | Used by various scripts to generate some files included in SVN (mainly |
4f3ce03f | 467 | Unicode-related and rarely changing) from source tables. |
67b1fbb9 KG |
468 | |
469 | @item GNU diffutils version 2.7 (or later) | |
470 | ||
80521187 | 471 | Useful when submitting patches for the GCC source code. |
67b1fbb9 KG |
472 | |
473 | @item patch version 2.5.4 (or later) | |
474 | ||
475 | Necessary when applying patches, created with @command{diff}, to one's | |
476 | own sources. | |
477 | ||
69403237 TT |
478 | @item ecj1 |
479 | @itemx gjavah | |
480 | ||
481 | If you wish to modify @file{.java} files in libjava, you will need to | |
482 | configure with @option{--enable-java-maintainer-mode}, and you will need | |
483 | to have executables named @command{ecj1} and @command{gjavah} in your path. | |
484 | The @command{ecj1} executable should run the Eclipse Java compiler via | |
485 | the GCC-specific entry point. You can download a suitable jar from | |
486 | @uref{ftp://sourceware.org/pub/java/}, or by running the script | |
487 | @command{contrib/download_ecj}. | |
488 | ||
793c44bd MK |
489 | @item antlr.jar version 2.7.1 (or later) |
490 | @itemx antlr binary | |
491 | ||
492 | If you wish to build the @command{gjdoc} binary in libjava, you will | |
e4ae5e77 | 493 | need to have an @file{antlr.jar} library available. The library is |
793c44bd MK |
494 | searched in system locations but can be configured with |
495 | @option{--with-antlr-jar=} instead. When configuring with | |
496 | @option{--enable-java-maintainer-mode}, you will need to have one of | |
497 | the executables named @command{cantlr}, @command{runantlr} or | |
498 | @command{antlr} in your path. | |
499 | ||
67b1fbb9 KG |
500 | @end table |
501 | ||
502 | @html | |
503 | <hr /> | |
504 | <p> | |
505 | @end html | |
506 | @ifhtml | |
507 | @uref{./index.html,,Return to the GCC Installation page} | |
508 | @end ifhtml | |
509 | @end ifset | |
510 | ||
f42974dc | 511 | @c ***Downloading the source************************************************** |
6cfb3f16 | 512 | @ifnothtml |
f42974dc | 513 | @comment node-name, next, previous, up |
67b1fbb9 | 514 | @node Downloading the source, Configuration, Prerequisites, Installing GCC |
6cfb3f16 | 515 | @end ifnothtml |
f42974dc | 516 | @ifset downloadhtml |
f42974dc DW |
517 | @ifnothtml |
518 | @chapter Downloading GCC | |
519 | @end ifnothtml | |
520 | @cindex Downloading GCC | |
521 | @cindex Downloading the Source | |
522 | ||
80521187 | 523 | GCC is distributed via @uref{http://gcc.gnu.org/svn.html,,SVN} and FTP |
eea81d3e | 524 | tarballs compressed with @command{gzip} or |
6cfb3f16 | 525 | @command{bzip2}. It is possible to download a full distribution or specific |
f42974dc DW |
526 | components. |
527 | ||
962e6e00 | 528 | Please refer to the @uref{http://gcc.gnu.org/releases.html,,releases web page} |
161d7b59 | 529 | for information on how to obtain GCC@. |
f42974dc | 530 | |
374716e7 BM |
531 | The full distribution includes the C, C++, Objective-C, Fortran, Java, |
532 | and Ada (in the case of GCC 3.1 and later) compilers. The full | |
533 | distribution also includes runtime libraries for C++, Objective-C, | |
534 | Fortran, and Java. In GCC 3.0 and later versions, the GNU compiler | |
535 | testsuites are also included in the full distribution. | |
f42974dc DW |
536 | |
537 | If you choose to download specific components, you must download the core | |
eea81d3e | 538 | GCC distribution plus any language specific distributions you wish to |
6c0a4eab | 539 | use. The core distribution includes the C language front end as well as the |
767094dd | 540 | shared components. Each language has a tarball which includes the language |
6c0a4eab | 541 | front end as well as the language runtime (when appropriate). |
f42974dc DW |
542 | |
543 | Unpack the core distribution as well as any language specific | |
544 | distributions in the same directory. | |
545 | ||
546 | If you also intend to build binutils (either to upgrade an existing | |
547 | installation or for use in place of the corresponding tools of your | |
548 | OS), unpack the binutils distribution either in the same directory or | |
549 | a separate one. In the latter case, add symbolic links to any | |
550 | components of the binutils you intend to build alongside the compiler | |
6cfb3f16 JM |
551 | (@file{bfd}, @file{binutils}, @file{gas}, @file{gprof}, @file{ld}, |
552 | @file{opcodes}, @dots{}) to the directory containing the GCC sources. | |
f42974dc | 553 | |
f9bab007 KG |
554 | Likewise the GMP, MPFR and MPC libraries can be automatically built |
555 | together with GCC. Unpack the GMP, MPFR and/or MPC source | |
556 | distributions in the directory containing the GCC sources and rename | |
557 | their directories to @file{gmp}, @file{mpfr} and @file{mpc}, | |
558 | respectively (or use symbolic links with the same name). | |
641afcff | 559 | |
f42974dc | 560 | @html |
b8db17af | 561 | <hr /> |
f42974dc DW |
562 | <p> |
563 | @end html | |
564 | @ifhtml | |
565 | @uref{./index.html,,Return to the GCC Installation page} | |
566 | @end ifhtml | |
567 | @end ifset | |
568 | ||
569 | @c ***Configuration*********************************************************** | |
6cfb3f16 | 570 | @ifnothtml |
f42974dc DW |
571 | @comment node-name, next, previous, up |
572 | @node Configuration, Building, Downloading the source, Installing GCC | |
6cfb3f16 | 573 | @end ifnothtml |
f42974dc | 574 | @ifset configurehtml |
f42974dc DW |
575 | @ifnothtml |
576 | @chapter Installing GCC: Configuration | |
577 | @end ifnothtml | |
578 | @cindex Configuration | |
579 | @cindex Installing GCC: Configuration | |
580 | ||
581 | Like most GNU software, GCC must be configured before it can be built. | |
582 | This document describes the recommended configuration procedure | |
583 | for both native and cross targets. | |
584 | ||
38209993 LG |
585 | We use @var{srcdir} to refer to the toplevel source directory for |
586 | GCC; we use @var{objdir} to refer to the toplevel build/object directory. | |
587 | ||
80521187 | 588 | If you obtained the sources via SVN, @var{srcdir} must refer to the top |
0b70519f RW |
589 | @file{gcc} directory, the one where the @file{MAINTAINERS} file can be |
590 | found, and not its @file{gcc} subdirectory, otherwise the build will fail. | |
f42974dc | 591 | |
b4b0fb02 RO |
592 | If either @var{srcdir} or @var{objdir} is located on an automounted NFS |
593 | file system, the shell's built-in @command{pwd} command will return | |
594 | temporary pathnames. Using these can lead to various sorts of build | |
595 | problems. To avoid this issue, set the @env{PWDCMD} environment | |
596 | variable to an automounter-aware @command{pwd} command, e.g., | |
7ba4ca63 | 597 | @command{pawd} or @samp{amq -w}, during the configuration and build |
b4b0fb02 RO |
598 | phases. |
599 | ||
102b60d1 | 600 | First, we @strong{highly} recommend that GCC be built into a |
0b70519f | 601 | separate directory from the sources which does @strong{not} reside |
102b60d1 GP |
602 | within the source tree. This is how we generally build GCC; building |
603 | where @var{srcdir} == @var{objdir} should still work, but doesn't | |
604 | get extensive testing; building where @var{objdir} is a subdirectory | |
605 | of @var{srcdir} is unsupported. | |
f42974dc | 606 | |
eea81d3e | 607 | If you have previously built GCC in the same directory for a |
f85b8d1a | 608 | different target machine, do @samp{make distclean} to delete all files |
377dfc82 GP |
609 | that might be invalid. One of the files this deletes is @file{Makefile}; |
610 | if @samp{make distclean} complains that @file{Makefile} does not exist | |
611 | or issues a message like ``don't know how to make distclean'' it probably | |
612 | means that the directory is already suitably clean. However, with the | |
613 | recommended method of building in a separate @var{objdir}, you should | |
614 | simply use a different @var{objdir} for each target. | |
f85b8d1a | 615 | |
38209993 LG |
616 | Second, when configuring a native system, either @command{cc} or |
617 | @command{gcc} must be in your path or you must set @env{CC} in | |
df002c7d DE |
618 | your environment before running configure. Otherwise the configuration |
619 | scripts may fail. | |
f42974dc | 620 | |
cc11cc9b | 621 | @ignore |
eea81d3e RO |
622 | Note that the bootstrap compiler and the resulting GCC must be link |
623 | compatible, else the bootstrap will fail with linker errors about | |
624 | incompatible object file formats. Several multilibed targets are | |
e69aa433 GP |
625 | affected by this requirement, see |
626 | @ifnothtml | |
627 | @ref{Specific, host/target specific installation notes}. | |
628 | @end ifnothtml | |
c009f01f | 629 | @ifhtml |
e69aa433 | 630 | @uref{specific.html,,host/target specific installation notes}. |
c009f01f | 631 | @end ifhtml |
cc11cc9b | 632 | @end ignore |
eea81d3e | 633 | |
f42974dc DW |
634 | To configure GCC: |
635 | ||
3ab51846 | 636 | @smallexample |
38209993 LG |
637 | % mkdir @var{objdir} |
638 | % cd @var{objdir} | |
eea81d3e | 639 | % @var{srcdir}/configure [@var{options}] [@var{target}] |
3ab51846 | 640 | @end smallexample |
f42974dc | 641 | |
2f41c1d6 PB |
642 | @heading Distributor options |
643 | ||
644 | If you will be distributing binary versions of GCC, with modifications | |
645 | to the source code, you should use the options described in this | |
646 | section to make clear that your version contains modifications. | |
647 | ||
648 | @table @code | |
649 | @item --with-pkgversion=@var{version} | |
650 | Specify a string that identifies your package. You may wish | |
651 | to include a build number or build date. This version string will be | |
652 | included in the output of @command{gcc --version}. This suffix does | |
653 | not replace the default version string, only the @samp{GCC} part. | |
654 | ||
655 | The default value is @samp{GCC}. | |
656 | ||
657 | @item --with-bugurl=@var{url} | |
658 | Specify the URL that users should visit if they wish to report a bug. | |
659 | You are of course welcome to forward bugs reported to you to the FSF, | |
660 | if you determine that they are not bugs in your modifications. | |
661 | ||
662 | The default value refers to the FSF's GCC bug tracker. | |
663 | ||
664 | @end table | |
f42974dc | 665 | |
ef88b07d | 666 | @heading Target specification |
f42974dc DW |
667 | @itemize @bullet |
668 | @item | |
38209993 | 669 | GCC has code to correctly determine the correct value for @var{target} |
0b70519f RW |
670 | for nearly all native systems. Therefore, we highly recommend you do |
671 | not provide a configure target when configuring a native compiler. | |
f42974dc DW |
672 | |
673 | @item | |
6cfb3f16 | 674 | @var{target} must be specified as @option{--target=@var{target}} |
f9047ed3 | 675 | when configuring a cross compiler; examples of valid targets would be |
52c0e446 | 676 | m68k-elf, sh-elf, etc. |
f42974dc DW |
677 | |
678 | @item | |
6cfb3f16 | 679 | Specifying just @var{target} instead of @option{--target=@var{target}} |
38209993 | 680 | implies that the host defaults to @var{target}. |
f42974dc DW |
681 | @end itemize |
682 | ||
683 | ||
ef88b07d | 684 | @heading Options specification |
f42974dc | 685 | |
ef88b07d | 686 | Use @var{options} to override several configure time options for |
7ba4ca63 | 687 | GCC@. A list of supported @var{options} follows; @samp{configure |
80f9249a JM |
688 | --help} may list other options, but those not listed below may not |
689 | work and should not normally be used. | |
f42974dc | 690 | |
c1c3bb0c ME |
691 | Note that each @option{--enable} option has a corresponding |
692 | @option{--disable} option and that each @option{--with} option has a | |
693 | corresponding @option{--without} option. | |
694 | ||
ef88b07d JM |
695 | @table @code |
696 | @item --prefix=@var{dirname} | |
697 | Specify the toplevel installation | |
f42974dc DW |
698 | directory. This is the recommended way to install the tools into a directory |
699 | other than the default. The toplevel installation directory defaults to | |
6cfb3f16 | 700 | @file{/usr/local}. |
f42974dc | 701 | |
38209993 | 702 | We @strong{highly} recommend against @var{dirname} being the same or a |
a7582c8c BE |
703 | subdirectory of @var{objdir} or vice versa. If specifying a directory |
704 | beneath a user's home directory tree, some shells will not expand | |
705 | @var{dirname} correctly if it contains the @samp{~} metacharacter; use | |
706 | @env{$HOME} instead. | |
f42974dc | 707 | |
8e5f33ff GK |
708 | The following standard @command{autoconf} options are supported. Normally you |
709 | should not need to use these options. | |
ef88b07d | 710 | @table @code |
ab130aa5 JM |
711 | @item --exec-prefix=@var{dirname} |
712 | Specify the toplevel installation directory for architecture-dependent | |
713 | files. The default is @file{@var{prefix}}. | |
714 | ||
715 | @item --bindir=@var{dirname} | |
716 | Specify the installation directory for the executables called by users | |
717 | (such as @command{gcc} and @command{g++}). The default is | |
718 | @file{@var{exec-prefix}/bin}. | |
719 | ||
720 | @item --libdir=@var{dirname} | |
721 | Specify the installation directory for object code libraries and | |
8e5f33ff GK |
722 | internal data files of GCC@. The default is @file{@var{exec-prefix}/lib}. |
723 | ||
724 | @item --libexecdir=@var{dirname} | |
725 | Specify the installation directory for internal executables of GCC@. | |
6ccde948 | 726 | The default is @file{@var{exec-prefix}/libexec}. |
ab130aa5 JM |
727 | |
728 | @item --with-slibdir=@var{dirname} | |
729 | Specify the installation directory for the shared libgcc library. The | |
730 | default is @file{@var{libdir}}. | |
731 | ||
70fa0efa RW |
732 | @item --datarootdir=@var{dirname} |
733 | Specify the root of the directory tree for read-only architecture-independent | |
734 | data files referenced by GCC@. The default is @file{@var{prefix}/share}. | |
735 | ||
ab130aa5 JM |
736 | @item --infodir=@var{dirname} |
737 | Specify the installation directory for documentation in info format. | |
70fa0efa | 738 | The default is @file{@var{datarootdir}/info}. |
ab130aa5 | 739 | |
8567c70f TT |
740 | @item --datadir=@var{dirname} |
741 | Specify the installation directory for some architecture-independent | |
70fa0efa RW |
742 | data files referenced by GCC@. The default is @file{@var{datarootdir}}. |
743 | ||
744 | @item --docdir=@var{dirname} | |
745 | Specify the installation directory for documentation files (other | |
746 | than Info) for GCC@. The default is @file{@var{datarootdir}/doc}. | |
747 | ||
748 | @item --htmldir=@var{dirname} | |
749 | Specify the installation directory for HTML documentation files. | |
750 | The default is @file{@var{docdir}}. | |
751 | ||
752 | @item --pdfdir=@var{dirname} | |
753 | Specify the installation directory for PDF documentation files. | |
754 | The default is @file{@var{docdir}}. | |
8567c70f | 755 | |
ab130aa5 JM |
756 | @item --mandir=@var{dirname} |
757 | Specify the installation directory for manual pages. The default is | |
70fa0efa RW |
758 | @file{@var{datarootdir}/man}. (Note that the manual pages are only extracts |
759 | from the full GCC manuals, which are provided in Texinfo format. The manpages | |
ab130aa5 JM |
760 | are derived by an automatic conversion process from parts of the full |
761 | manual.) | |
762 | ||
ef88b07d JM |
763 | @item --with-gxx-include-dir=@var{dirname} |
764 | Specify | |
ae5cc016 MM |
765 | the installation directory for G++ header files. The default depends |
766 | on other configuration options, and differs between cross and native | |
767 | configurations. | |
ecb7d6b3 | 768 | |
ef88b07d | 769 | @end table |
f42974dc | 770 | |
b21d216c AF |
771 | @item --program-prefix=@var{prefix} |
772 | GCC supports some transformations of the names of its programs when | |
8a36672b JM |
773 | installing them. This option prepends @var{prefix} to the names of |
774 | programs to install in @var{bindir} (see above). For example, specifying | |
b21d216c AF |
775 | @option{--program-prefix=foo-} would result in @samp{gcc} |
776 | being installed as @file{/usr/local/bin/foo-gcc}. | |
777 | ||
778 | @item --program-suffix=@var{suffix} | |
779 | Appends @var{suffix} to the names of programs to install in @var{bindir} | |
8a36672b | 780 | (see above). For example, specifying @option{--program-suffix=-3.1} |
b21d216c AF |
781 | would result in @samp{gcc} being installed as |
782 | @file{/usr/local/bin/gcc-3.1}. | |
783 | ||
784 | @item --program-transform-name=@var{pattern} | |
785 | Applies the @samp{sed} script @var{pattern} to be applied to the names | |
8a36672b | 786 | of programs to install in @var{bindir} (see above). @var{pattern} has to |
b21d216c | 787 | consist of one or more basic @samp{sed} editing commands, separated by |
8a36672b | 788 | semicolons. For example, if you want the @samp{gcc} program name to be |
b21d216c AF |
789 | transformed to the installed program @file{/usr/local/bin/myowngcc} and |
790 | the @samp{g++} program name to be transformed to | |
791 | @file{/usr/local/bin/gspecial++} without changing other program names, | |
792 | you could use the pattern | |
793 | @option{--program-transform-name='s/^gcc$/myowngcc/; s/^g++$/gspecial++/'} | |
794 | to achieve this effect. | |
795 | ||
796 | All three options can be combined and used together, resulting in more | |
8a36672b | 797 | complex conversion patterns. As a basic rule, @var{prefix} (and |
b21d216c AF |
798 | @var{suffix}) are prepended (appended) before further transformations |
799 | can happen with a special transformation script @var{pattern}. | |
800 | ||
8c085f6f | 801 | As currently implemented, this option only takes effect for native |
b21d216c | 802 | builds; cross compiler binaries' names are not transformed even when a |
8c085f6f | 803 | transformation is explicitly asked for by one of these options. |
b21d216c AF |
804 | |
805 | For native builds, some of the installed programs are also installed | |
806 | with the target alias in front of their name, as in | |
8a36672b | 807 | @samp{i686-pc-linux-gnu-gcc}. All of the above transformations happen |
78466c0e | 808 | before the target alias is prepended to the name---so, specifying |
b21d216c AF |
809 | @option{--program-prefix=foo-} and @option{program-suffix=-3.1}, the |
810 | resulting binary would be installed as | |
811 | @file{/usr/local/bin/i686-pc-linux-gnu-foo-gcc-3.1}. | |
812 | ||
8ecab453 | 813 | As a last shortcoming, none of the installed Ada programs are |
b21d216c AF |
814 | transformed yet, which will be fixed in some time. |
815 | ||
ef88b07d JM |
816 | @item --with-local-prefix=@var{dirname} |
817 | Specify the | |
6ac48571 JM |
818 | installation directory for local include files. The default is |
819 | @file{/usr/local}. Specify this option if you want the compiler to | |
820 | search directory @file{@var{dirname}/include} for locally installed | |
821 | header files @emph{instead} of @file{/usr/local/include}. | |
822 | ||
823 | You should specify @option{--with-local-prefix} @strong{only} if your | |
824 | site has a different convention (not @file{/usr/local}) for where to put | |
825 | site-specific files. | |
826 | ||
827 | The default value for @option{--with-local-prefix} is @file{/usr/local} | |
828 | regardless of the value of @option{--prefix}. Specifying | |
829 | @option{--prefix} has no effect on which directory GCC searches for | |
830 | local header files. This may seem counterintuitive, but actually it is | |
831 | logical. | |
832 | ||
833 | The purpose of @option{--prefix} is to specify where to @emph{install | |
834 | GCC}. The local header files in @file{/usr/local/include}---if you put | |
161d7b59 | 835 | any in that directory---are not part of GCC@. They are part of other |
6ac48571 JM |
836 | programs---perhaps many others. (GCC installs its own header files in |
837 | another directory which is based on the @option{--prefix} value.) | |
838 | ||
48209ce5 | 839 | Both the local-prefix include directory and the GCC-prefix include |
78466c0e | 840 | directory are part of GCC's ``system include'' directories. Although these |
48209ce5 JDA |
841 | two directories are not fixed, they need to be searched in the proper |
842 | order for the correct processing of the include_next directive. The | |
843 | local-prefix include directory is searched before the GCC-prefix | |
844 | include directory. Another characteristic of system include directories | |
845 | is that pedantic warnings are turned off for headers in these directories. | |
846 | ||
847 | Some autoconf macros add @option{-I @var{directory}} options to the | |
848 | compiler command line, to ensure that directories containing installed | |
849 | packages' headers are searched. When @var{directory} is one of GCC's | |
850 | system include directories, GCC will ignore the option so that system | |
851 | directories continue to be processed in the correct order. This | |
852 | may result in a search order different from what was specified but the | |
853 | directory will still be searched. | |
854 | ||
855 | GCC automatically searches for ordinary libraries using | |
856 | @env{GCC_EXEC_PREFIX}. Thus, when the same installation prefix is | |
857 | used for both GCC and packages, GCC will automatically search for | |
858 | both headers and libraries. This provides a configuration that is | |
859 | easy to use. GCC behaves in a manner similar to that when it is | |
860 | installed as a system compiler in @file{/usr}. | |
861 | ||
862 | Sites that need to install multiple versions of GCC may not want to | |
863 | use the above simple configuration. It is possible to use the | |
864 | @option{--program-prefix}, @option{--program-suffix} and | |
865 | @option{--program-transform-name} options to install multiple versions | |
866 | into a single directory, but it may be simpler to use different prefixes | |
867 | and the @option{--with-local-prefix} option to specify the location of the | |
868 | site-specific files for each version. It will then be necessary for | |
869 | users to specify explicitly the location of local site libraries | |
870 | (e.g., with @env{LIBRARY_PATH}). | |
871 | ||
872 | The same value can be used for both @option{--with-local-prefix} and | |
873 | @option{--prefix} provided it is not @file{/usr}. This can be used | |
874 | to avoid the default search of @file{/usr/local/include}. | |
875 | ||
6ac48571 JM |
876 | @strong{Do not} specify @file{/usr} as the @option{--with-local-prefix}! |
877 | The directory you use for @option{--with-local-prefix} @strong{must not} | |
878 | contain any of the system's standard header files. If it did contain | |
879 | them, certain programs would be miscompiled (including GNU Emacs, on | |
880 | certain targets), because this would override and nullify the header | |
4c64396e | 881 | file corrections made by the @command{fixincludes} script. |
6ac48571 JM |
882 | |
883 | Indications are that people who use this option use it based on mistaken | |
884 | ideas of what it is for. People use it as if it specified where to | |
161d7b59 | 885 | install part of GCC@. Perhaps they make this assumption because |
6ac48571 JM |
886 | installing GCC creates the directory. |
887 | ||
6cfb3f16 | 888 | @item --enable-shared[=@var{package}[,@dots{}]] |
0cb98517 AO |
889 | Build shared versions of libraries, if shared libraries are supported on |
890 | the target platform. Unlike GCC 2.95.x and earlier, shared libraries | |
07659e97 | 891 | are enabled by default on all platforms that support shared libraries. |
0cb98517 AO |
892 | |
893 | If a list of packages is given as an argument, build shared libraries | |
894 | only for the listed packages. For other packages, only static libraries | |
895 | will be built. Package names currently recognized in the GCC tree are | |
896 | @samp{libgcc} (also known as @samp{gcc}), @samp{libstdc++} (not | |
e22df315 | 897 | @samp{libstdc++-v3}), @samp{libffi}, @samp{zlib}, @samp{boehm-gc}, |
07659e97 | 898 | @samp{ada}, @samp{libada}, @samp{libjava} and @samp{libobjc}. |
55c45226 | 899 | Note @samp{libiberty} does not support shared libraries at all. |
0cb98517 AO |
900 | |
901 | Use @option{--disable-shared} to build only static libraries. Note that | |
902 | @option{--disable-shared} does not accept a list of package names as | |
903 | argument, only @option{--enable-shared} does. | |
f42974dc | 904 | |
ef88b07d JM |
905 | @item @anchor{with-gnu-as}--with-gnu-as |
906 | Specify that the compiler should assume that the | |
767094dd | 907 | assembler it finds is the GNU assembler. However, this does not modify |
377dfc82 GP |
908 | the rules to find an assembler and will result in confusion if the |
909 | assembler found is not actually the GNU assembler. (Confusion may also | |
8c26c999 JM |
910 | result if the compiler finds the GNU assembler but has not been |
911 | configured with @option{--with-gnu-as}.) If you have more than one | |
38209993 | 912 | assembler installed on your system, you may want to use this option in |
cc11cc9b PB |
913 | connection with @option{--with-as=@var{pathname}} or |
914 | @option{--with-build-time-tools=@var{pathname}}. | |
38209993 | 915 | |
8c085f6f JJ |
916 | The following systems are the only ones where it makes a difference |
917 | whether you use the GNU assembler. On any other system, | |
918 | @option{--with-gnu-as} has no effect. | |
919 | ||
2ff16718 | 920 | @itemize @bullet |
8c085f6f JJ |
921 | @item @samp{hppa1.0-@var{any}-@var{any}} |
922 | @item @samp{hppa1.1-@var{any}-@var{any}} | |
8f2afc21 EB |
923 | @item @samp{sparc-sun-solaris2.@var{any}} |
924 | @item @samp{sparc64-@var{any}-solaris2.@var{any}} | |
8c085f6f | 925 | @end itemize |
8c26c999 | 926 | |
8f2afc21 | 927 | @item @anchor{with-as}--with-as=@var{pathname} |
cc11cc9b PB |
928 | Specify that the compiler should use the assembler pointed to by |
929 | @var{pathname}, rather than the one found by the standard rules to find | |
930 | an assembler, which are: | |
f42974dc DW |
931 | @itemize @bullet |
932 | @item | |
cc11cc9b PB |
933 | Unless GCC is being built with a cross compiler, check the |
934 | @file{@var{libexec}/gcc/@var{target}/@var{version}} directory. | |
935 | @var{libexec} defaults to @file{@var{exec-prefix}/libexec}; | |
936 | @var{exec-prefix} defaults to @var{prefix}, which | |
937 | defaults to @file{/usr/local} unless overridden by the | |
938 | @option{--prefix=@var{pathname}} switch described above. @var{target} | |
939 | is the target system triple, such as @samp{sparc-sun-solaris2.7}, and | |
940 | @var{version} denotes the GCC version, such as 3.0. | |
941 | ||
f42974dc | 942 | @item |
cc11cc9b PB |
943 | If the target system is the same that you are building on, check |
944 | operating system specific directories (e.g.@: @file{/usr/ccs/bin} on | |
250d5688 | 945 | Sun Solaris 2). |
cc11cc9b PB |
946 | |
947 | @item | |
948 | Check in the @env{PATH} for a tool whose name is prefixed by the | |
949 | target system triple. | |
950 | ||
951 | @item | |
952 | Check in the @env{PATH} for a tool whose name is not prefixed by the | |
953 | target system triple, if the host and target system triple are | |
954 | the same (in other words, we use a host tool if it can be used for | |
955 | the target as well). | |
f42974dc | 956 | @end itemize |
cc11cc9b PB |
957 | |
958 | You may want to use @option{--with-as} if no assembler | |
959 | is installed in the directories listed above, or if you have multiple | |
960 | assemblers installed and want to choose one that is not found by the | |
961 | above rules. | |
f42974dc | 962 | |
ef88b07d JM |
963 | @item @anchor{with-gnu-ld}--with-gnu-ld |
964 | Same as @uref{#with-gnu-as,,@option{--with-gnu-as}} | |
8f2afc21 | 965 | but for the linker. |
f42974dc | 966 | |
eea81d3e | 967 | @item --with-ld=@var{pathname} |
8f2afc21 EB |
968 | Same as @uref{#with-as,,@option{--with-as}} |
969 | but for the linker. | |
f42974dc | 970 | |
ef88b07d JM |
971 | @item --with-stabs |
972 | Specify that stabs debugging | |
38209993 LG |
973 | information should be used instead of whatever format the host normally |
974 | uses. Normally GCC uses the same debug format as the host system. | |
f42974dc | 975 | |
8c26c999 JM |
976 | On MIPS based systems and on Alphas, you must specify whether you want |
977 | GCC to create the normal ECOFF debugging format, or to use BSD-style | |
978 | stabs passed through the ECOFF symbol table. The normal ECOFF debug | |
161d7b59 JM |
979 | format cannot fully handle languages other than C@. BSD stabs format can |
980 | handle other languages, but it only works with the GNU debugger GDB@. | |
8c26c999 JM |
981 | |
982 | Normally, GCC uses the ECOFF debugging format by default; if you | |
161d7b59 | 983 | prefer BSD stabs, specify @option{--with-stabs} when you configure GCC@. |
8c26c999 JM |
984 | |
985 | No matter which default you choose when you configure GCC, the user | |
986 | can use the @option{-gcoff} and @option{-gstabs+} options to specify explicitly | |
987 | the debug format for a particular compilation. | |
988 | ||
989 | @option{--with-stabs} is meaningful on the ISC system on the 386, also, if | |
990 | @option{--with-gas} is used. It selects use of stabs debugging | |
991 | information embedded in COFF output. This kind of debugging information | |
992 | supports C++ well; ordinary COFF debugging information does not. | |
993 | ||
994 | @option{--with-stabs} is also meaningful on 386 systems running SVR4. It | |
995 | selects use of stabs debugging information embedded in ELF output. The | |
996 | C++ compiler currently (2.6.0) does not support the DWARF debugging | |
997 | information normally used on 386 SVR4 platforms; stabs provide a | |
998 | workable alternative. This requires gas and gdb, as the normal SVR4 | |
999 | tools can not generate or interpret stabs. | |
1000 | ||
eea81d3e | 1001 | @item --disable-multilib |
ef88b07d | 1002 | Specify that multiple target |
eea81d3e | 1003 | libraries to support different target variants, calling |
1eaf20ec | 1004 | conventions, etc.@: should not be built. The default is to build a |
eea81d3e | 1005 | predefined set of them. |
f42974dc | 1006 | |
e8515283 DE |
1007 | Some targets provide finer-grained control over which multilibs are built |
1008 | (e.g., @option{--disable-softfloat}): | |
1009 | @table @code | |
e8515283 DE |
1010 | @item arc-*-elf* |
1011 | biendian. | |
1012 | ||
1013 | @item arm-*-* | |
1014 | fpu, 26bit, underscore, interwork, biendian, nofmult. | |
1015 | ||
1016 | @item m68*-*-* | |
1017 | softfloat, m68881, m68000, m68020. | |
1018 | ||
1019 | @item mips*-*-* | |
1020 | single-float, biendian, softfloat. | |
1021 | ||
1022 | @item powerpc*-*-*, rs6000*-*-* | |
1023 | aix64, pthread, softfloat, powercpu, powerpccpu, powerpcos, biendian, | |
f282ffb3 | 1024 | sysv, aix. |
e8515283 DE |
1025 | |
1026 | @end table | |
1027 | ||
aca600aa AS |
1028 | @item --with-multilib-list=@var{list} |
1029 | @itemx --without-multilib-list | |
1030 | Specify what multilibs to build. | |
1031 | Currently only implemented for sh*-*-*. | |
1032 | ||
1033 | @var{list} is a comma separated list of CPU names. These must be of the | |
1034 | form @code{sh*} or @code{m*} (in which case they match the compiler option | |
1035 | for that processor). The list should not contain any endian options - | |
1036 | these are handled by @option{--with-endian}. | |
1037 | ||
1038 | If @var{list} is empty, then there will be no multilibs for extra | |
1039 | processors. The multilib for the secondary endian remains enabled. | |
1040 | ||
1041 | As a special case, if an entry in the list starts with a @code{!} | |
1042 | (exclamation point), then it is added to the list of excluded multilibs. | |
1043 | Entries of this sort should be compatible with @samp{MULTILIB_EXCLUDES} | |
1044 | (once the leading @code{!} has been stripped). | |
1045 | ||
1046 | If @option{--with-multilib-list} is not given, then a default set of | |
1047 | multilibs is selected based on the value of @option{--target}. This is | |
1048 | usually the complete set of libraries, but some targets imply a more | |
1049 | specialized subset. | |
1050 | ||
1051 | Example 1: to configure a compiler for SH4A only, but supporting both | |
1052 | endians, with little endian being the default: | |
1053 | @smallexample | |
1054 | --with-cpu=sh4a --with-endian=little,big --with-multilib-list= | |
1055 | @end smallexample | |
1056 | ||
1057 | Example 2: to configure a compiler for both SH4A and SH4AL-DSP, but with | |
1058 | only little endian SH4AL: | |
1059 | @smallexample | |
1060 | --with-cpu=sh4a --with-endian=little,big --with-multilib-list=sh4al,!mb/m4al | |
1061 | @end smallexample | |
1062 | ||
1063 | @item --with-endian=@var{endians} | |
1064 | Specify what endians to use. | |
1065 | Currently only implemented for sh*-*-*. | |
1066 | ||
1067 | @var{endians} may be one of the following: | |
1068 | @table @code | |
1069 | @item big | |
1070 | Use big endian exclusively. | |
1071 | @item little | |
1072 | Use little endian exclusively. | |
1073 | @item big,little | |
1074 | Use big endian by default. Provide a multilib for little endian. | |
1075 | @item little,big | |
1076 | Use little endian by default. Provide a multilib for big endian. | |
1077 | @end table | |
1078 | ||
ef88b07d JM |
1079 | @item --enable-threads |
1080 | Specify that the target | |
38209993 LG |
1081 | supports threads. This affects the Objective-C compiler and runtime |
1082 | library, and exception handling for other languages like C++ and Java. | |
6ac48571 | 1083 | On some systems, this is the default. |
f42974dc | 1084 | |
f6160ed5 LR |
1085 | In general, the best (and, in many cases, the only known) threading |
1086 | model available will be configured for use. Beware that on some | |
2dd76960 | 1087 | systems, GCC has not been taught what threading models are generally |
3c6bb1db LR |
1088 | available for the system. In this case, @option{--enable-threads} is an |
1089 | alias for @option{--enable-threads=single}. | |
f6160ed5 LR |
1090 | |
1091 | @item --disable-threads | |
1092 | Specify that threading support should be disabled for the system. | |
3c6bb1db | 1093 | This is an alias for @option{--enable-threads=single}. |
f6160ed5 | 1094 | |
ef88b07d JM |
1095 | @item --enable-threads=@var{lib} |
1096 | Specify that | |
38209993 LG |
1097 | @var{lib} is the thread support library. This affects the Objective-C |
1098 | compiler and runtime library, and exception handling for other languages | |
f85b8d1a JM |
1099 | like C++ and Java. The possibilities for @var{lib} are: |
1100 | ||
1101 | @table @code | |
1102 | @item aix | |
1103 | AIX thread support. | |
1104 | @item dce | |
1105 | DCE thread support. | |
4c80872c RK |
1106 | @item gnat |
1107 | Ada tasking support. For non-Ada programs, this setting is equivalent | |
8a36672b | 1108 | to @samp{single}. When used in conjunction with the Ada run time, it |
4c80872c RK |
1109 | causes GCC to use the same thread primitives as Ada uses. This option |
1110 | is necessary when using both Ada and the back end exception handling, | |
1111 | which is the default for most Ada targets. | |
f85b8d1a | 1112 | @item mach |
eea81d3e | 1113 | Generic MACH thread support, known to work on NeXTSTEP@. (Please note |
3c6bb1db | 1114 | that the file needed to support this configuration, @file{gthr-mach.h}, is |
f6160ed5 LR |
1115 | missing and thus this setting will cause a known bootstrap failure.) |
1116 | @item no | |
1117 | This is an alias for @samp{single}. | |
f85b8d1a | 1118 | @item posix |
18167442 EB |
1119 | Generic POSIX/Unix98 thread support. |
1120 | @item posix95 | |
1121 | Generic POSIX/Unix95 thread support. | |
f6160ed5 LR |
1122 | @item rtems |
1123 | RTEMS thread support. | |
f85b8d1a JM |
1124 | @item single |
1125 | Disable thread support, should work for all platforms. | |
1126 | @item solaris | |
67c330ae RO |
1127 | Sun Solaris 2/Unix International thread support. Only use this if you |
1128 | really need to use this legacy API instead of the default, @samp{posix}. | |
f85b8d1a JM |
1129 | @item vxworks |
1130 | VxWorks thread support. | |
1131 | @item win32 | |
1132 | Microsoft Win32 API thread support. | |
61fec9ff JB |
1133 | @item nks |
1134 | Novell Kernel Services thread support. | |
f85b8d1a | 1135 | @end table |
f42974dc | 1136 | |
8dea1cca DD |
1137 | @item --enable-tls |
1138 | Specify that the target supports TLS (Thread Local Storage). Usually | |
1139 | configure can correctly determine if TLS is supported. In cases where | |
1140 | it guesses incorrectly, TLS can be explicitly enabled or disabled with | |
1141 | @option{--enable-tls} or @option{--disable-tls}. This can happen if | |
1142 | the assembler supports TLS but the C library does not, or if the | |
1143 | assumptions made by the configure test are incorrect. | |
1144 | ||
1145 | @item --disable-tls | |
1146 | Specify that the target does not support TLS. | |
1147 | This is an alias for @option{--enable-tls=no}. | |
1148 | ||
ef88b07d | 1149 | @item --with-cpu=@var{cpu} |
8981c15b JM |
1150 | @itemx --with-cpu-32=@var{cpu} |
1151 | @itemx --with-cpu-64=@var{cpu} | |
7816bea0 DJ |
1152 | Specify which cpu variant the compiler should generate code for by default. |
1153 | @var{cpu} will be used as the default value of the @option{-mcpu=} switch. | |
59fbf3cb | 1154 | This option is only supported on some targets, including ARM, i386, M68k, |
8981c15b JM |
1155 | PowerPC, and SPARC@. The @option{--with-cpu-32} and |
1156 | @option{--with-cpu-64} options specify separate default CPUs for | |
c5f0fe67 JM |
1157 | 32-bit and 64-bit modes; these options are only supported for i386, |
1158 | x86-64 and PowerPC. | |
7816bea0 DJ |
1159 | |
1160 | @item --with-schedule=@var{cpu} | |
1161 | @itemx --with-arch=@var{cpu} | |
8981c15b JM |
1162 | @itemx --with-arch-32=@var{cpu} |
1163 | @itemx --with-arch-64=@var{cpu} | |
7816bea0 | 1164 | @itemx --with-tune=@var{cpu} |
8981c15b JM |
1165 | @itemx --with-tune-32=@var{cpu} |
1166 | @itemx --with-tune-64=@var{cpu} | |
7816bea0 | 1167 | @itemx --with-abi=@var{abi} |
9b66ebb1 | 1168 | @itemx --with-fpu=@var{type} |
7816bea0 DJ |
1169 | @itemx --with-float=@var{type} |
1170 | These configure options provide default values for the @option{-mschedule=}, | |
9b66ebb1 PB |
1171 | @option{-march=}, @option{-mtune=}, @option{-mabi=}, and @option{-mfpu=} |
1172 | options and for @option{-mhard-float} or @option{-msoft-float}. As with | |
1173 | @option{--with-cpu}, which switches will be accepted and acceptable values | |
1174 | of the arguments depend on the target. | |
f42974dc | 1175 | |
3cf94279 PB |
1176 | @item --with-mode=@var{mode} |
1177 | Specify if the compiler should default to @option{-marm} or @option{-mthumb}. | |
1178 | This option is only supported on ARM targets. | |
1179 | ||
a3af5e26 L |
1180 | @item --with-fpmath=sse |
1181 | Specify if the compiler should default to @option{-msse2} and | |
1182 | @option{-mfpmath=sse}. This option is only supported on i386 and | |
1183 | x86-64 targets. | |
1184 | ||
9f0df97a DD |
1185 | @item --with-divide=@var{type} |
1186 | Specify how the compiler should generate code for checking for | |
1187 | division by zero. This option is only supported on the MIPS target. | |
1188 | The possibilities for @var{type} are: | |
1189 | @table @code | |
1190 | @item traps | |
1191 | Division by zero checks use conditional traps (this is the default on | |
1192 | systems that support conditional traps). | |
1193 | @item breaks | |
1194 | Division by zero checks use the break instruction. | |
1195 | @end table | |
1196 | ||
66471b47 DD |
1197 | @c If you make --with-llsc the default for additional targets, |
1198 | @c update the --with-llsc description in the MIPS section below. | |
1199 | ||
1200 | @item --with-llsc | |
1201 | On MIPS targets, make @option{-mllsc} the default when no | |
1202 | @option{-mno-lsc} option is passed. This is the default for | |
1203 | Linux-based targets, as the kernel will emulate them if the ISA does | |
1204 | not provide them. | |
1205 | ||
1206 | @item --without-llsc | |
1207 | On MIPS targets, make @option{-mno-llsc} the default when no | |
1208 | @option{-mllsc} option is passed. | |
1209 | ||
b96c5923 DD |
1210 | @item --with-synci |
1211 | On MIPS targets, make @option{-msynci} the default when no | |
1212 | @option{-mno-synci} option is passed. | |
1213 | ||
1214 | @item --without-synci | |
1215 | On MIPS targets, make @option{-mno-synci} the default when no | |
1216 | @option{-msynci} option is passed. This is the default. | |
1217 | ||
e21d5757 DJ |
1218 | @item --with-mips-plt |
1219 | On MIPS targets, make use of copy relocations and PLTs. | |
1220 | These features are extensions to the traditional | |
1221 | SVR4-based MIPS ABIs and require support from GNU binutils | |
1222 | and the runtime C library. | |
1223 | ||
354b7da5 DH |
1224 | @item --enable-__cxa_atexit |
1225 | Define if you want to use __cxa_atexit, rather than atexit, to | |
1226 | register C++ destructors for local statics and global objects. | |
1227 | This is essential for fully standards-compliant handling of | |
8a36672b JM |
1228 | destructors, but requires __cxa_atexit in libc. This option is currently |
1229 | only available on systems with GNU libc. When enabled, this will cause | |
cea79118 | 1230 | @option{-fuse-cxa-atexit} to be passed by default. |
354b7da5 | 1231 | |
ef88b07d JM |
1232 | @item --enable-target-optspace |
1233 | Specify that target | |
38209993 LG |
1234 | libraries should be optimized for code space instead of code speed. |
1235 | This is the default for the m32r platform. | |
f42974dc | 1236 | |
ab130aa5 JM |
1237 | @item --with-cpp-install-dir=@var{dirname} |
1238 | Specify that the user visible @command{cpp} program should be installed | |
1239 | in @file{@var{prefix}/@var{dirname}/cpp}, in addition to @var{bindir}. | |
f42974dc | 1240 | |
55c4f715 RO |
1241 | @item --enable-comdat |
1242 | Enable COMDAT group support. This is primarily used to override the | |
1243 | automatically detected value. | |
1244 | ||
07cf4226 DM |
1245 | @item --enable-initfini-array |
1246 | Force the use of sections @code{.init_array} and @code{.fini_array} | |
1247 | (instead of @code{.init} and @code{.fini}) for constructors and | |
1248 | destructors. Option @option{--disable-initfini-array} has the | |
1249 | opposite effect. If neither option is specified, the configure script | |
1250 | will try to guess whether the @code{.init_array} and | |
1251 | @code{.fini_array} sections are supported and, if they are, use them. | |
1252 | ||
00020c16 ILT |
1253 | @item --enable-build-with-cxx |
1254 | Build GCC using a C++ compiler rather than a C compiler. This is an | |
1255 | experimental option which may become the default in a later release. | |
1256 | ||
ef88b07d | 1257 | @item --enable-maintainer-mode |
0b70519f RW |
1258 | The build rules that regenerate the Autoconf and Automake output files as |
1259 | well as the GCC master message catalog @file{gcc.pot} are normally | |
767094dd JM |
1260 | disabled. This is because it can only be rebuilt if the complete source |
1261 | tree is present. If you have changed the sources and want to rebuild the | |
6ac48571 | 1262 | catalog, configuring with @option{--enable-maintainer-mode} will enable |
767094dd | 1263 | this. Note that you need a recent version of the @code{gettext} tools |
6ac48571 JM |
1264 | to do so. |
1265 | ||
f5c3bb4b PB |
1266 | @item --disable-bootstrap |
1267 | For a native build, the default configuration is to perform | |
1268 | a 3-stage bootstrap of the compiler when @samp{make} is invoked, | |
1269 | testing that GCC can compile itself correctly. If you want to disable | |
1270 | this process, you can configure with @option{--disable-bootstrap}. | |
1271 | ||
1272 | @item --enable-bootstrap | |
1273 | In special cases, you may want to perform a 3-stage build | |
1274 | even if the target and host triplets are different. | |
0b70519f | 1275 | This is possible when the host can run code compiled for |
f5c3bb4b PB |
1276 | the target (e.g.@: host is i686-linux, target is i486-linux). |
1277 | Starting from GCC 4.2, to do this you have to configure explicitly | |
1278 | with @option{--enable-bootstrap}. | |
1279 | ||
51b9ff45 | 1280 | @item --enable-generated-files-in-srcdir |
80521187 | 1281 | Neither the .c and .h files that are generated from Bison and flex nor the |
51b9ff45 | 1282 | info manuals and man pages that are built from the .texi files are present |
80521187 GP |
1283 | in the SVN development tree. When building GCC from that development tree, |
1284 | or from one of our snapshots, those generated files are placed in your | |
1285 | build directory, which allows for the source to be in a readonly | |
1286 | directory. | |
51b9ff45 KC |
1287 | |
1288 | If you configure with @option{--enable-generated-files-in-srcdir} then those | |
1289 | generated files will go into the source directory. This is mainly intended | |
1290 | for generating release or prerelease tarballs of the GCC sources, since it | |
80521187 GP |
1291 | is not a requirement that the users of source releases to have flex, Bison, |
1292 | or makeinfo. | |
51b9ff45 | 1293 | |
ef88b07d JM |
1294 | @item --enable-version-specific-runtime-libs |
1295 | Specify | |
38209993 | 1296 | that runtime libraries should be installed in the compiler specific |
8e5f33ff GK |
1297 | subdirectory (@file{@var{libdir}/gcc}) rather than the usual places. In |
1298 | addition, @samp{libstdc++}'s include files will be installed into | |
1299 | @file{@var{libdir}} unless you overruled it by using | |
6cfb3f16 | 1300 | @option{--with-gxx-include-dir=@var{dirname}}. Using this option is |
38209993 | 1301 | particularly useful if you intend to use several versions of GCC in |
8a36672b | 1302 | parallel. This is currently supported by @samp{libgfortran}, |
b9034bbd AJ |
1303 | @samp{libjava}, @samp{libmudflap}, @samp{libstdc++}, and @samp{libobjc}. |
1304 | ||
ef88b07d JM |
1305 | @item --enable-languages=@var{lang1},@var{lang2},@dots{} |
1306 | Specify that only a particular subset of compilers and | |
767094dd | 1307 | their runtime libraries should be built. For a list of valid values for |
6cfb3f16 | 1308 | @var{langN} you can issue the following command in the |
eea81d3e | 1309 | @file{gcc} directory of your GCC source tree:@* |
3ab51846 | 1310 | @smallexample |
eea81d3e | 1311 | grep language= */config-lang.in |
3ab51846 | 1312 | @end smallexample |
eea81d3e | 1313 | Currently, you can use any of the following: |
47530dd9 | 1314 | @code{all}, @code{ada}, @code{c}, @code{c++}, @code{fortran}, @code{java}, |
e8645a40 | 1315 | @code{objc}, @code{obj-c++}. |
f995c51f JW |
1316 | Building the Ada compiler has special requirements, see below. |
1317 | If you do not pass this flag, or specify the option @code{all}, then all | |
1318 | default languages available in the @file{gcc} sub-tree will be configured. | |
e8645a40 | 1319 | Ada and Objective-C++ are not default languages; the rest are. |
cc11cc9b PB |
1320 | Re-defining @code{LANGUAGES} when calling @samp{make} @strong{does not} |
1321 | work anymore, as those language sub-directories might not have been | |
1322 | configured! | |
f42974dc | 1323 | |
80ca80e9 BM |
1324 | @item --enable-stage1-languages=@var{lang1},@var{lang2},@dots{} |
1325 | Specify that a particular subset of compilers and their runtime | |
1326 | libraries should be built with the system C compiler during stage 1 of | |
1327 | the bootstrap process, rather than only in later stages with the | |
1328 | bootstrapped C compiler. The list of valid values is the same as for | |
1329 | @option{--enable-languages}, and the option @code{all} will select all | |
1330 | of the languages enabled by @option{--enable-languages}. This option is | |
1331 | primarily useful for GCC development; for instance, when a development | |
1332 | version of the compiler cannot bootstrap due to compiler bugs, or when | |
1333 | one is debugging front ends other than the C front end. When this | |
1334 | option is used, one can then build the target libraries for the | |
1335 | specified languages with the stage-1 compiler by using @command{make | |
1336 | stage1-bubble all-target}, or run the testsuite on the stage-1 compiler | |
1337 | for the specified languages using @command{make stage1-start check-gcc}. | |
1338 | ||
cd271054 AC |
1339 | @item --disable-libada |
1340 | Specify that the run-time libraries and tools used by GNAT should not | |
1341 | be built. This can be useful for debugging, or for compatibility with | |
c2910edf | 1342 | previous Ada build procedures, when it was required to explicitly |
cd271054 AC |
1343 | do a @samp{make -C gcc gnatlib_and_tools}. |
1344 | ||
ef0087a7 KH |
1345 | @item --disable-libssp |
1346 | Specify that the run-time libraries for stack smashing protection | |
1347 | should not be built. | |
1348 | ||
4fe7a8bc AH |
1349 | @item --disable-libgomp |
1350 | Specify that the run-time libraries used by GOMP should not be built. | |
1351 | ||
ef88b07d JM |
1352 | @item --with-dwarf2 |
1353 | Specify that the compiler should | |
eea81d3e | 1354 | use DWARF 2 debugging information as the default. |
f85b8d1a | 1355 | |
7f970b70 AM |
1356 | @item --enable-targets=all |
1357 | @itemx --enable-targets=@var{target_list} | |
1358 | Some GCC targets, e.g.@: powerpc64-linux, build bi-arch compilers. | |
1359 | These are compilers that are able to generate either 64-bit or 32-bit | |
8ab5f5c9 | 1360 | code. Typically, the corresponding 32-bit target, e.g.@: |
7f970b70 AM |
1361 | powerpc-linux for powerpc64-linux, only generates 32-bit code. This |
1362 | option enables the 32-bit target to be a bi-arch compiler, which is | |
1363 | useful when you want a bi-arch compiler that defaults to 32-bit, and | |
1364 | you are building a bi-arch or multi-arch binutils in a combined tree. | |
34677bae MK |
1365 | On mips-linux, this will build a tri-arch compiler (ABI o32/n32/64), |
1366 | defaulted to o32. | |
1367 | Currently, this option only affects sparc-linux, powerpc-linux, x86-linux | |
1368 | and mips-linux. | |
7f970b70 AM |
1369 | |
1370 | @item --enable-secureplt | |
1371 | This option enables @option{-msecure-plt} by default for powerpc-linux. | |
1372 | @ifnothtml | |
1373 | @xref{RS/6000 and PowerPC Options,, RS/6000 and PowerPC Options, gcc, | |
1374 | Using the GNU Compiler Collection (GCC)}, | |
1375 | @end ifnothtml | |
1376 | @ifhtml | |
1377 | See ``RS/6000 and PowerPC Options'' in the main manual | |
1378 | @end ifhtml | |
1379 | ||
922e3e33 UB |
1380 | @item --enable-cld |
1381 | This option enables @option{-mcld} by default for 32-bit x86 targets. | |
1382 | @ifnothtml | |
1383 | @xref{i386 and x86-64 Options,, i386 and x86-64 Options, gcc, | |
1384 | Using the GNU Compiler Collection (GCC)}, | |
1385 | @end ifnothtml | |
1386 | @ifhtml | |
1387 | See ``i386 and x86-64 Options'' in the main manual | |
1388 | @end ifhtml | |
1389 | ||
f85b8d1a | 1390 | @item --enable-win32-registry |
eea81d3e | 1391 | @itemx --enable-win32-registry=@var{key} |
f85b8d1a | 1392 | @itemx --disable-win32-registry |
95fef11f | 1393 | The @option{--enable-win32-registry} option enables Microsoft Windows-hosted GCC |
f85b8d1a JM |
1394 | to look up installations paths in the registry using the following key: |
1395 | ||
1396 | @smallexample | |
eea81d3e | 1397 | @code{HKEY_LOCAL_MACHINE\SOFTWARE\Free Software Foundation\@var{key}} |
f85b8d1a JM |
1398 | @end smallexample |
1399 | ||
eea81d3e | 1400 | @var{key} defaults to GCC version number, and can be overridden by the |
8a36672b | 1401 | @option{--enable-win32-registry=@var{key}} option. Vendors and distributors |
f85b8d1a JM |
1402 | who use custom installers are encouraged to provide a different key, |
1403 | perhaps one comprised of vendor name and GCC version number, to | |
767094dd | 1404 | avoid conflict with existing installations. This feature is enabled |
6cfb3f16 | 1405 | by default, and can be disabled by @option{--disable-win32-registry} |
f85b8d1a JM |
1406 | option. This option has no effect on the other hosts. |
1407 | ||
1408 | @item --nfp | |
1409 | Specify that the machine does not have a floating point unit. This | |
c9693e96 LH |
1410 | option only applies to @samp{m68k-sun-sunos@var{n}}. On any other |
1411 | system, @option{--nfp} has no effect. | |
f85b8d1a | 1412 | |
dd859b8a KG |
1413 | @item --enable-werror |
1414 | @itemx --disable-werror | |
1415 | @itemx --enable-werror=yes | |
1416 | @itemx --enable-werror=no | |
1417 | When you specify this option, it controls whether certain files in the | |
1418 | compiler are built with @option{-Werror} in bootstrap stage2 and later. | |
1419 | If you don't specify it, @option{-Werror} is turned on for the main | |
1420 | development trunk. However it defaults to off for release branches and | |
1421 | final releases. The specific files which get @option{-Werror} are | |
1422 | controlled by the Makefiles. | |
1423 | ||
f85b8d1a JM |
1424 | @item --enable-checking |
1425 | @itemx --enable-checking=@var{list} | |
cdce5c16 | 1426 | When you specify this option, the compiler is built to perform internal |
e5080aa6 | 1427 | consistency checks of the requested complexity. This does not change the |
cdce5c16 NS |
1428 | generated code, but adds error checking within the compiler. This will |
1429 | slow down the compiler and may only work properly if you are building | |
1430 | the compiler with GCC@. This is @samp{yes} by default when building | |
00f39bd5 RG |
1431 | from SVN or snapshots, but @samp{release} for releases. The default |
1432 | for building the stage1 compiler is @samp{yes}. More control | |
cdce5c16 NS |
1433 | over the checks may be had by specifying @var{list}. The categories of |
1434 | checks available are @samp{yes} (most common checks | |
1435 | @samp{assert,misc,tree,gc,rtlflag,runtime}), @samp{no} (no checks at | |
1436 | all), @samp{all} (all but @samp{valgrind}), @samp{release} (cheapest | |
1437 | checks @samp{assert,runtime}) or @samp{none} (same as @samp{no}). | |
1438 | Individual checks can be enabled with these flags @samp{assert}, | |
604f825c | 1439 | @samp{df}, @samp{fold}, @samp{gc}, @samp{gcac} @samp{misc}, @samp{rtl}, |
cdce5c16 NS |
1440 | @samp{rtlflag}, @samp{runtime}, @samp{tree}, and @samp{valgrind}. |
1441 | ||
1442 | The @samp{valgrind} check requires the external @command{valgrind} | |
ccf548a7 | 1443 | simulator, available from @uref{http://valgrind.org/}. The |
604f825c | 1444 | @samp{df}, @samp{rtl}, @samp{gcac} and @samp{valgrind} checks are very expensive. |
cdce5c16 NS |
1445 | To disable all checking, @samp{--disable-checking} or |
1446 | @samp{--enable-checking=none} must be explicitly requested. Disabling | |
1447 | assertions will make the compiler and runtime slightly faster but | |
1448 | increase the risk of undetected internal errors causing wrong code to be | |
1449 | generated. | |
f85b8d1a | 1450 | |
00f39bd5 | 1451 | @item --disable-stage1-checking |
1588fb31 | 1452 | @itemx --enable-stage1-checking |
00f39bd5 RG |
1453 | @itemx --enable-stage1-checking=@var{list} |
1454 | If no @option{--enable-checking} option is specified the stage1 | |
1455 | compiler will be built with @samp{yes} checking enabled, otherwise | |
1456 | the stage1 checking flags are the same as specified by | |
1457 | @option{--enable-checking}. To build the stage1 compiler with | |
1458 | different checking options use @option{--enable-stage1-checking}. | |
1459 | The list of checking options is the same as for @option{--enable-checking}. | |
1460 | If your system is too slow or too small to bootstrap a released compiler | |
1461 | with checking for stage1 enabled, you can use @samp{--disable-stage1-checking} | |
1462 | to disable checking for the stage1 compiler. | |
1463 | ||
22aa533e | 1464 | @item --enable-coverage |
31775d31 | 1465 | @itemx --enable-coverage=@var{level} |
22aa533e | 1466 | With this option, the compiler is built to collect self coverage |
8a36672b JM |
1467 | information, every time it is run. This is for internal development |
1468 | purposes, and only works when the compiler is being built with gcc. The | |
22aa533e | 1469 | @var{level} argument controls whether the compiler is built optimized or |
8a36672b | 1470 | not, values are @samp{opt} and @samp{noopt}. For coverage analysis you |
22aa533e | 1471 | want to disable optimization, for performance analysis you want to |
8a36672b | 1472 | enable optimization. When coverage is enabled, the default level is |
22aa533e NS |
1473 | without optimization. |
1474 | ||
439a7e54 | 1475 | @item --enable-gather-detailed-mem-stats |
95ea367d | 1476 | When this option is specified more detailed information on memory |
439a7e54 | 1477 | allocation is gathered. This information is printed when using |
daf2f129 | 1478 | @option{-fmem-report}. |
439a7e54 | 1479 | |
5dd90688 RG |
1480 | @item --with-gc |
1481 | @itemx --with-gc=@var{choice} | |
1482 | With this option you can specify the garbage collector implementation | |
1483 | used during the compilation process. @var{choice} can be one of | |
1484 | @samp{page} and @samp{zone}, where @samp{page} is the default. | |
1485 | ||
f85b8d1a JM |
1486 | @item --enable-nls |
1487 | @itemx --disable-nls | |
6cfb3f16 | 1488 | The @option{--enable-nls} option enables Native Language Support (NLS), |
f85b8d1a | 1489 | which lets GCC output diagnostics in languages other than American |
767094dd | 1490 | English. Native Language Support is enabled by default if not doing a |
161d7b59 | 1491 | canadian cross build. The @option{--disable-nls} option disables NLS@. |
f85b8d1a JM |
1492 | |
1493 | @item --with-included-gettext | |
c771326b | 1494 | If NLS is enabled, the @option{--with-included-gettext} option causes the build |
021c4bfd | 1495 | procedure to prefer its copy of GNU @command{gettext}. |
f85b8d1a JM |
1496 | |
1497 | @item --with-catgets | |
1498 | If NLS is enabled, and if the host lacks @code{gettext} but has the | |
1499 | inferior @code{catgets} interface, the GCC build procedure normally | |
1500 | ignores @code{catgets} and instead uses GCC's copy of the GNU | |
6cfb3f16 | 1501 | @code{gettext} library. The @option{--with-catgets} option causes the |
f85b8d1a | 1502 | build procedure to use the host's @code{catgets} in this situation. |
80f9249a | 1503 | |
5304400d CR |
1504 | @item --with-libiconv-prefix=@var{dir} |
1505 | Search for libiconv header files in @file{@var{dir}/include} and | |
1506 | libiconv library files in @file{@var{dir}/lib}. | |
1507 | ||
9340544b ZW |
1508 | @item --enable-obsolete |
1509 | Enable configuration for an obsoleted system. If you attempt to | |
1510 | configure GCC for a system (build, host, or target) which has been | |
1511 | obsoleted, and you do not specify this flag, configure will halt with an | |
1512 | error message. | |
1513 | ||
1514 | All support for systems which have been obsoleted in one release of GCC | |
1515 | is removed entirely in the next major release, unless someone steps | |
1516 | forward to maintain the port. | |
486aa804 BE |
1517 | |
1518 | @item --enable-decimal-float | |
79b87c74 MM |
1519 | @itemx --enable-decimal-float=yes |
1520 | @itemx --enable-decimal-float=no | |
1521 | @itemx --enable-decimal-float=bid | |
1522 | @itemx --enable-decimal-float=dpd | |
486aa804 | 1523 | @itemx --disable-decimal-float |
79b87c74 | 1524 | Enable (or disable) support for the C decimal floating point extension |
7292b8e4 BE |
1525 | that is in the IEEE 754-2008 standard. This is enabled by default only |
1526 | on PowerPC, i386, and x86_64 GNU/Linux systems. Other systems may also | |
1527 | support it, but require the user to specifically enable it. You can | |
1528 | optionally control which decimal floating point format is used (either | |
1529 | @samp{bid} or @samp{dpd}). The @samp{bid} (binary integer decimal) | |
1530 | format is default on i386 and x86_64 systems, and the @samp{dpd} | |
1531 | (densely packed decimal) format is default on PowerPC systems. | |
486aa804 | 1532 | |
ab22c1fa CF |
1533 | @item --enable-fixed-point |
1534 | @itemx --disable-fixed-point | |
1535 | Enable (or disable) support for C fixed-point arithmetic. | |
1536 | This option is enabled by default for some targets (such as MIPS) which | |
1537 | have hardware-support for fixed-point operations. On other targets, you | |
1538 | may enable this option manually. | |
1539 | ||
ed965309 JJ |
1540 | @item --with-long-double-128 |
1541 | Specify if @code{long double} type should be 128-bit by default on selected | |
1542 | GNU/Linux architectures. If using @code{--without-long-double-128}, | |
1543 | @code{long double} will be by default 64-bit, the same as @code{double} type. | |
1544 | When neither of these configure options are used, the default will be | |
1545 | 128-bit @code{long double} when built against GNU C Library 2.4 and later, | |
1546 | 64-bit @code{long double} otherwise. | |
1547 | ||
8a877c9c KG |
1548 | @item --with-gmp=@var{pathname} |
1549 | @itemx --with-gmp-include=@var{pathname} | |
1550 | @itemx --with-gmp-lib=@var{pathname} | |
1551 | @itemx --with-mpfr=@var{pathname} | |
1552 | @itemx --with-mpfr-include=@var{pathname} | |
1553 | @itemx --with-mpfr-lib=@var{pathname} | |
f9bab007 KG |
1554 | @itemx --with-mpc=@var{pathname} |
1555 | @itemx --with-mpc-include=@var{pathname} | |
1556 | @itemx --with-mpc-lib=@var{pathname} | |
1557 | If you do not have GMP (the GNU Multiple Precision library), the MPFR | |
1558 | library and/or the MPC library installed in a standard location and | |
1559 | you want to build GCC, you can explicitly specify the directory where | |
1560 | they are installed (@samp{--with-gmp=@var{gmpinstalldir}}, | |
1561 | @samp{--with-mpfr=@var{mpfrinstalldir}}, | |
1562 | @samp{--with-mpc=@var{mpcinstalldir}}). The | |
8a877c9c KG |
1563 | @option{--with-gmp=@var{gmpinstalldir}} option is shorthand for |
1564 | @option{--with-gmp-lib=@var{gmpinstalldir}/lib} and | |
1565 | @option{--with-gmp-include=@var{gmpinstalldir}/include}. Likewise the | |
1566 | @option{--with-mpfr=@var{mpfrinstalldir}} option is shorthand for | |
1567 | @option{--with-mpfr-lib=@var{mpfrinstalldir}/lib} and | |
f9bab007 KG |
1568 | @option{--with-mpfr-include=@var{mpfrinstalldir}/include}, also the |
1569 | @option{--with-mpc=@var{mpcinstalldir}} option is shorthand for | |
1570 | @option{--with-mpc-lib=@var{mpcinstalldir}/lib} and | |
1571 | @option{--with-mpc-include=@var{mpcinstalldir}/include}. If these | |
3aea2d1c SP |
1572 | shorthand assumptions are not correct, you can use the explicit |
1573 | include and lib options directly. | |
1574 | ||
1575 | @item --with-ppl=@var{pathname} | |
1576 | @itemx --with-ppl-include=@var{pathname} | |
1577 | @itemx --with-ppl-lib=@var{pathname} | |
1578 | @itemx --with-cloog=@var{pathname} | |
1579 | @itemx --with-cloog-include=@var{pathname} | |
1580 | @itemx --with-cloog-lib=@var{pathname} | |
1581 | If you do not have PPL (the Parma Polyhedra Library) and the CLooG | |
1582 | libraries installed in a standard location and you want to build GCC, | |
1583 | you can explicitly specify the directory where they are installed | |
1584 | (@samp{--with-ppl=@var{pplinstalldir}}, | |
1585 | @samp{--with-cloog=@var{clooginstalldir}}). The | |
1586 | @option{--with-ppl=@var{pplinstalldir}} option is shorthand for | |
1587 | @option{--with-ppl-lib=@var{pplinstalldir}/lib} and | |
1588 | @option{--with-ppl-include=@var{pplinstalldir}/include}. Likewise the | |
1589 | @option{--with-cloog=@var{clooginstalldir}} option is shorthand for | |
1590 | @option{--with-cloog-lib=@var{clooginstalldir}/lib} and | |
1591 | @option{--with-cloog-include=@var{clooginstalldir}/include}. If these | |
8a877c9c KG |
1592 | shorthand assumptions are not correct, you can use the explicit |
1593 | include and lib options directly. | |
1594 | ||
f38095f3 JM |
1595 | @item --with-host-libstdcxx=@var{linker-args} |
1596 | If you are linking with a static copy of PPL, you can use this option | |
1597 | to specify how the linker should find the standard C++ library used | |
1598 | internally by PPL. Typical values of @var{linker-args} might be | |
1599 | @samp{-lstdc++} or @samp{-Wl,-Bstatic,-lstdc++,-Bdynamic -lm}. If you are | |
1600 | linking with a shared copy of PPL, you probably do not need this | |
1601 | option; shared library dependencies will cause the linker to search | |
1602 | for the standard C++ library automatically. | |
1603 | ||
00020c16 ILT |
1604 | @item --with-stage1-ldflags=@var{flags} |
1605 | This option may be used to set linker flags to be used when linking | |
1606 | stage 1 of GCC. These are also used when linking GCC if configured with | |
1607 | @option{--disable-bootstrap}. By default no special flags are used. | |
1608 | ||
1609 | @item --with-stage1-libs=@var{libs} | |
1610 | This option may be used to set libraries to be used when linking stage 1 | |
1611 | of GCC. These are also used when linking GCC if configured with | |
1612 | @option{--disable-bootstrap}. The default is the argument to | |
1613 | @option{--with-host-libstdcxx}, if specified. | |
1614 | ||
1615 | @item --with-boot-ldflags=@var{flags} | |
1616 | This option may be used to set linker flags to be used when linking | |
1617 | stage 2 and later when bootstrapping GCC. By default no special flags | |
1618 | are used. | |
1619 | ||
1620 | @item --with-boot-libs=@var{libs} | |
1621 | This option may be used to set libraries to be used when linking stage 2 | |
1622 | and later when bootstrapping GCC. The default is the argument to | |
1623 | @option{--with-host-libstdcxx}, if specified. | |
1624 | ||
c8aea42c PB |
1625 | @item --with-debug-prefix-map=@var{map} |
1626 | Convert source directory names using @option{-fdebug-prefix-map} when | |
1627 | building runtime libraries. @samp{@var{map}} is a space-separated | |
1628 | list of maps of the form @samp{@var{old}=@var{new}}. | |
1629 | ||
3b0249cb ILT |
1630 | @item --enable-linker-build-id |
1631 | Tells GCC to pass @option{--build-id} option to the linker for all final | |
1632 | links (links performed without the @option{-r} or @option{--relocatable} | |
1633 | option), if the linker supports it. If you specify | |
1634 | @option{--enable-linker-build-id}, but your linker does not | |
1635 | support @option{--build-id} option, a warning is issued and the | |
1636 | @option{--enable-linker-build-id} option is ignored. The default is off. | |
1637 | ||
e31bcd1b JM |
1638 | @item --enable-gnu-unique-object |
1639 | @itemx --disable-gnu-unique-object | |
1640 | Tells GCC to use the gnu_unique_object relocation for C++ template | |
1641 | static data members and inline function local statics. Enabled by | |
1642 | default for a native toolchain with an assembler that accepts it and | |
1643 | GLIBC 2.11 or above, otherwise disabled. | |
1644 | ||
2d413304 RW |
1645 | @item --enable-lto |
1646 | Enable support for link-time optimization (LTO). This is enabled by | |
1647 | default if a working libelf implementation is found (see | |
1648 | @option{--with-libelf}). | |
1649 | ||
1650 | @item --with-libelf=@var{pathname} | |
1651 | @itemx --with-libelf-include=@var{pathname} | |
1652 | @itemx --with-libelf-lib=@var{pathname} | |
1653 | If you do not have libelf installed in a standard location and you | |
1654 | want to enable support for link-time optimization (LTO), you can | |
1655 | explicitly specify the directory where libelf is installed | |
1656 | (@samp{--with-libelf=@var{libelfinstalldir}}). The | |
1657 | @option{--with-libelf=@var{libelfinstalldir}} option is shorthand for | |
1658 | @option{--with-libelf-include=@var{libelfinstalldir}/include} | |
1659 | @option{--with-libelf-lib=@var{libelfinstalldir}/lib}. | |
1660 | ||
1661 | @item --enable-gold | |
1662 | Enable support for using @command{gold} as the linker. If gold support is | |
1663 | enabled together with @option{--enable-lto}, an additional directory | |
1664 | @file{lto-plugin} will be built. The code in this directory is a | |
1665 | plugin for gold that allows the link-time optimizer to extract object | |
1666 | files with LTO information out of library archives. See | |
1667 | @option{-flto} and @option{-fwhopr} for details. | |
ef88b07d | 1668 | @end table |
f42974dc | 1669 | |
c1c3bb0c ME |
1670 | @subheading Cross-Compiler-Specific Options |
1671 | The following options only apply to building cross compilers. | |
0b70519f | 1672 | |
ef88b07d | 1673 | @table @code |
4977bab6 ZW |
1674 | @item --with-sysroot |
1675 | @itemx --with-sysroot=@var{dir} | |
1676 | Tells GCC to consider @var{dir} as the root of a tree that contains a | |
1677 | (subset of) the root filesystem of the target operating system. | |
1678 | Target system headers, libraries and run-time object files will be | |
0b70519f RW |
1679 | searched in there. More specifically, this acts as if |
1680 | @option{--sysroot=@var{dir}} was added to the default options of the built | |
1681 | compiler. The specified directory is not copied into the | |
4977bab6 ZW |
1682 | install tree, unlike the options @option{--with-headers} and |
1683 | @option{--with-libs} that this option obsoletes. The default value, | |
1684 | in case @option{--with-sysroot} is not given an argument, is | |
047d636f DJ |
1685 | @option{$@{gcc_tooldir@}/sys-root}. If the specified directory is a |
1686 | subdirectory of @option{$@{exec_prefix@}}, then it will be found relative to | |
1687 | the GCC binaries if the installation tree is moved. | |
4977bab6 | 1688 | |
0b70519f RW |
1689 | This option affects the system root for the compiler used to build |
1690 | target libraries (which runs on the build system) and the compiler newly | |
1691 | installed with @code{make install}; it does not affect the compiler which is | |
1692 | used to build GCC itself. | |
1693 | ||
160633c6 MM |
1694 | @item --with-build-sysroot |
1695 | @itemx --with-build-sysroot=@var{dir} | |
1696 | Tells GCC to consider @var{dir} as the system root (see | |
526635cb | 1697 | @option{--with-sysroot}) while building target libraries, instead of |
160633c6 MM |
1698 | the directory specified with @option{--with-sysroot}. This option is |
1699 | only useful when you are already using @option{--with-sysroot}. You | |
526635cb | 1700 | can use @option{--with-build-sysroot} when you are configuring with |
160633c6 | 1701 | @option{--prefix} set to a directory that is different from the one in |
526635cb MM |
1702 | which you are installing GCC and your target libraries. |
1703 | ||
1704 | This option affects the system root for the compiler used to build | |
1705 | target libraries (which runs on the build system); it does not affect | |
1706 | the compiler which is used to build GCC itself. | |
160633c6 | 1707 | |
65a824f6 JT |
1708 | @item --with-headers |
1709 | @itemx --with-headers=@var{dir} | |
4977bab6 | 1710 | Deprecated in favor of @option{--with-sysroot}. |
65a824f6 JT |
1711 | Specifies that target headers are available when building a cross compiler. |
1712 | The @var{dir} argument specifies a directory which has the target include | |
1713 | files. These include files will be copied into the @file{gcc} install | |
1714 | directory. @emph{This option with the @var{dir} argument is required} when | |
1715 | building a cross compiler, if @file{@var{prefix}/@var{target}/sys-include} | |
1716 | doesn't pre-exist. If @file{@var{prefix}/@var{target}/sys-include} does | |
1717 | pre-exist, the @var{dir} argument may be omitted. @command{fixincludes} | |
8a36672b | 1718 | will be run on these files to make them compatible with GCC@. |
264d65c1 AP |
1719 | |
1720 | @item --without-headers | |
1721 | Tells GCC not use any target headers from a libc when building a cross | |
2dd76960 | 1722 | compiler. When crossing to GNU/Linux, you need the headers so GCC |
264d65c1 | 1723 | can build the exception handling for libgcc. |
264d65c1 | 1724 | |
65a824f6 | 1725 | @item --with-libs |
0b70519f | 1726 | @itemx --with-libs="@var{dir1} @var{dir2} @dots{} @var{dirN}" |
4977bab6 | 1727 | Deprecated in favor of @option{--with-sysroot}. |
38209993 LG |
1728 | Specifies a list of directories which contain the target runtime |
1729 | libraries. These libraries will be copied into the @file{gcc} install | |
65a824f6 JT |
1730 | directory. If the directory list is omitted, this option has no |
1731 | effect. | |
cc11cc9b | 1732 | |
ef88b07d | 1733 | @item --with-newlib |
eea81d3e | 1734 | Specifies that @samp{newlib} is |
38209993 | 1735 | being used as the target C library. This causes @code{__eprintf} to be |
eea81d3e RO |
1736 | omitted from @file{libgcc.a} on the assumption that it will be provided by |
1737 | @samp{newlib}. | |
cc11cc9b PB |
1738 | |
1739 | @item --with-build-time-tools=@var{dir} | |
1740 | Specifies where to find the set of target tools (assembler, linker, etc.) | |
1741 | that will be used while building GCC itself. This option can be useful | |
1742 | if the directory layouts are different between the system you are building | |
1743 | GCC on, and the system where you will deploy it. | |
1744 | ||
e4ae5e77 | 1745 | For example, on an @samp{ia64-hp-hpux} system, you may have the GNU |
cc11cc9b PB |
1746 | assembler and linker in @file{/usr/bin}, and the native tools in a |
1747 | different path, and build a toolchain that expects to find the | |
1748 | native tools in @file{/usr/bin}. | |
1749 | ||
1750 | When you use this option, you should ensure that @var{dir} includes | |
1751 | @command{ar}, @command{as}, @command{ld}, @command{nm}, | |
1752 | @command{ranlib} and @command{strip} if necessary, and possibly | |
1753 | @command{objdump}. Otherwise, GCC may use an inconsistent set of | |
1754 | tools. | |
ef88b07d | 1755 | @end table |
f9047ed3 | 1756 | |
c1c3bb0c ME |
1757 | @subheading Java-Specific Options |
1758 | ||
1759 | The following option applies to the build of the Java front end. | |
1760 | ||
1761 | @table @code | |
1762 | @item --disable-libgcj | |
1763 | Specify that the run-time libraries | |
1764 | used by GCJ should not be built. This is useful in case you intend | |
1765 | to use GCJ with some other run-time, or you're going to install it | |
1766 | separately, or it just happens not to build on your particular | |
1767 | machine. In general, if the Java front end is enabled, the GCJ | |
1768 | libraries will be enabled too, unless they're known to not work on | |
1769 | the target platform. If GCJ is enabled but @samp{libgcj} isn't built, you | |
1770 | may need to port it; in this case, before modifying the top-level | |
1771 | @file{configure.in} so that @samp{libgcj} is enabled by default on this platform, | |
1772 | you may use @option{--enable-libgcj} to override the default. | |
1773 | ||
1774 | @end table | |
1775 | ||
1776 | The following options apply to building @samp{libgcj}. | |
1777 | ||
1778 | @subsubheading General Options | |
1779 | ||
1780 | @table @code | |
69403237 TT |
1781 | @item --enable-java-maintainer-mode |
1782 | By default the @samp{libjava} build will not attempt to compile the | |
1783 | @file{.java} source files to @file{.class}. Instead, it will use the | |
1784 | @file{.class} files from the source tree. If you use this option you | |
1785 | must have executables named @command{ecj1} and @command{gjavah} in your path | |
1786 | for use by the build. You must use this option if you intend to | |
1787 | modify any @file{.java} files in @file{libjava}. | |
1788 | ||
1789 | @item --with-java-home=@var{dirname} | |
1790 | This @samp{libjava} option overrides the default value of the | |
1791 | @samp{java.home} system property. It is also used to set | |
1792 | @samp{sun.boot.class.path} to @file{@var{dirname}/lib/rt.jar}. By | |
1793 | default @samp{java.home} is set to @file{@var{prefix}} and | |
1794 | @samp{sun.boot.class.path} to | |
1795 | @file{@var{datadir}/java/libgcj-@var{version}.jar}. | |
1796 | ||
1797 | @item --with-ecj-jar=@var{filename} | |
1798 | This option can be used to specify the location of an external jar | |
1799 | file containing the Eclipse Java compiler. A specially modified | |
1800 | version of this compiler is used by @command{gcj} to parse | |
1801 | @file{.java} source files. If this option is given, the | |
1802 | @samp{libjava} build will create and install an @file{ecj1} executable | |
1803 | which uses this jar file at runtime. | |
1804 | ||
1805 | If this option is not given, but an @file{ecj.jar} file is found in | |
1806 | the topmost source tree at configure time, then the @samp{libgcj} | |
1807 | build will create and install @file{ecj1}, and will also install the | |
1808 | discovered @file{ecj.jar} into a suitable place in the install tree. | |
1809 | ||
1810 | If @file{ecj1} is not installed, then the user will have to supply one | |
1811 | on his path in order for @command{gcj} to properly parse @file{.java} | |
1812 | source files. A suitable jar is available from | |
1813 | @uref{ftp://sourceware.org/pub/java/}. | |
1814 | ||
c1c3bb0c ME |
1815 | @item --disable-getenv-properties |
1816 | Don't set system properties from @env{GCJ_PROPERTIES}. | |
1817 | ||
1818 | @item --enable-hash-synchronization | |
8a36672b | 1819 | Use a global hash table for monitor locks. Ordinarily, |
c1c3bb0c | 1820 | @samp{libgcj}'s @samp{configure} script automatically makes |
8a36672b | 1821 | the correct choice for this option for your platform. Only use |
c1c3bb0c ME |
1822 | this if you know you need the library to be configured differently. |
1823 | ||
1824 | @item --enable-interpreter | |
8a36672b JM |
1825 | Enable the Java interpreter. The interpreter is automatically |
1826 | enabled by default on all platforms that support it. This option | |
c1c3bb0c ME |
1827 | is really only useful if you want to disable the interpreter |
1828 | (using @option{--disable-interpreter}). | |
1829 | ||
1830 | @item --disable-java-net | |
8a36672b | 1831 | Disable java.net. This disables the native part of java.net only, |
c1c3bb0c ME |
1832 | using non-functional stubs for native method implementations. |
1833 | ||
1834 | @item --disable-jvmpi | |
1835 | Disable JVMPI support. | |
1836 | ||
a507baad DD |
1837 | @item --disable-libgcj-bc |
1838 | Disable BC ABI compilation of certain parts of libgcj. By default, | |
1839 | some portions of libgcj are compiled with @option{-findirect-dispatch} | |
a26c7632 DD |
1840 | and @option{-fno-indirect-classes}, allowing them to be overridden at |
1841 | run-time. | |
a507baad DD |
1842 | |
1843 | If @option{--disable-libgcj-bc} is specified, libgcj is built without | |
a26c7632 DD |
1844 | these options. This allows the compile-time linker to resolve |
1845 | dependencies when statically linking to libgcj. However it makes it | |
1846 | impossible to override the affected portions of libgcj at run-time. | |
a507baad | 1847 | |
c07cd2c7 DD |
1848 | @item --enable-reduced-reflection |
1849 | Build most of libgcj with @option{-freduced-reflection}. This reduces | |
1850 | the size of libgcj at the expense of not being able to do accurate | |
1851 | reflection on the classes it contains. This option is safe if you | |
1852 | know that code using libgcj will never use reflection on the standard | |
1853 | runtime classes in libgcj (including using serialization, RMI or CORBA). | |
1854 | ||
c1c3bb0c ME |
1855 | @item --with-ecos |
1856 | Enable runtime eCos target support. | |
1857 | ||
1858 | @item --without-libffi | |
8a36672b | 1859 | Don't use @samp{libffi}. This will disable the interpreter and JNI |
c1c3bb0c ME |
1860 | support as well, as these require @samp{libffi} to work. |
1861 | ||
1862 | @item --enable-libgcj-debug | |
1863 | Enable runtime debugging code. | |
1864 | ||
1865 | @item --enable-libgcj-multifile | |
1866 | If specified, causes all @file{.java} source files to be | |
1867 | compiled into @file{.class} files in one invocation of | |
8a36672b JM |
1868 | @samp{gcj}. This can speed up build time, but is more |
1869 | resource-intensive. If this option is unspecified or | |
c1c3bb0c ME |
1870 | disabled, @samp{gcj} is invoked once for each @file{.java} |
1871 | file to compile into a @file{.class} file. | |
1872 | ||
1873 | @item --with-libiconv-prefix=DIR | |
1874 | Search for libiconv in @file{DIR/include} and @file{DIR/lib}. | |
1875 | ||
1876 | @item --enable-sjlj-exceptions | |
4f6c2131 EB |
1877 | Force use of the @code{setjmp}/@code{longjmp}-based scheme for exceptions. |
1878 | @samp{configure} ordinarily picks the correct value based on the platform. | |
1879 | Only use this option if you are sure you need a different setting. | |
c1c3bb0c ME |
1880 | |
1881 | @item --with-system-zlib | |
1882 | Use installed @samp{zlib} rather than that included with GCC@. | |
1883 | ||
1884 | @item --with-win32-nlsapi=ansi, unicows or unicode | |
1885 | Indicates how MinGW @samp{libgcj} translates between UNICODE | |
8a36672b | 1886 | characters and the Win32 API@. |
c9db365d JS |
1887 | |
1888 | @item --enable-java-home | |
1889 | If enabled, this creates a JPackage compatible SDK environment during install. | |
1890 | Note that if --enable-java-home is used, --with-arch-directory=ARCH must also | |
1891 | be specified. | |
1892 | ||
1893 | @item --with-arch-directory=ARCH | |
1894 | Specifies the name to use for the @file{jre/lib/ARCH} directory in the SDK | |
1895 | environment created when --enable-java-home is passed. Typical names for this | |
1896 | directory include i386, amd64, ia64, etc. | |
1897 | ||
1898 | @item --with-os-directory=DIR | |
1899 | Specifies the OS directory for the SDK include directory. This is set to auto | |
1900 | detect, and is typically 'linux'. | |
1901 | ||
1902 | @item --with-origin-name=NAME | |
1903 | Specifies the JPackage origin name. This defaults to the 'gcj' in | |
1904 | java-1.5.0-gcj. | |
1905 | ||
1906 | @item --with-arch-suffix=SUFFIX | |
1907 | Specifies the suffix for the sdk directory. Defaults to the empty string. | |
1908 | Examples include '.x86_64' in 'java-1.5.0-gcj-1.5.0.0.x86_64'. | |
1909 | ||
1910 | @item --with-jvm-root-dir=DIR | |
1911 | Specifies where to install the SDK. Default is $(prefix)/lib/jvm. | |
1912 | ||
1913 | @item --with-jvm-jar-dir=DIR | |
1914 | Specifies where to install jars. Default is $(prefix)/lib/jvm-exports. | |
1915 | ||
1916 | @item --with-python-dir=DIR | |
1917 | Specifies where to install the Python modules used for aot-compile. DIR should | |
1918 | not include the prefix used in installation. For example, if the Python modules | |
1919 | are to be installed in /usr/lib/python2.5/site-packages, then | |
1920 | --with-python-dir=/lib/python2.5/site-packages should be passed. If this is | |
1921 | not specified, then the Python modules are installed in $(prefix)/share/python. | |
1922 | ||
1923 | @item --enable-aot-compile-rpm | |
1924 | Adds aot-compile-rpm to the list of installed scripts. | |
1925 | ||
34677bae MK |
1926 | @item --enable-browser-plugin |
1927 | Build the gcjwebplugin web browser plugin. | |
1928 | ||
c1c3bb0c ME |
1929 | @table @code |
1930 | @item ansi | |
1931 | Use the single-byte @code{char} and the Win32 A functions natively, | |
8a36672b | 1932 | translating to and from UNICODE when using these functions. If |
c1c3bb0c ME |
1933 | unspecified, this is the default. |
1934 | ||
1935 | @item unicows | |
8a36672b | 1936 | Use the @code{WCHAR} and Win32 W functions natively. Adds |
c1c3bb0c ME |
1937 | @code{-lunicows} to @file{libgcj.spec} to link with @samp{libunicows}. |
1938 | @file{unicows.dll} needs to be deployed on Microsoft Windows 9X machines | |
8a36672b | 1939 | running built executables. @file{libunicows.a}, an open-source |
c1c3bb0c ME |
1940 | import library around Microsoft's @code{unicows.dll}, is obtained from |
1941 | @uref{http://libunicows.sourceforge.net/}, which also gives details | |
1942 | on getting @file{unicows.dll} from Microsoft. | |
1943 | ||
1944 | @item unicode | |
8a36672b JM |
1945 | Use the @code{WCHAR} and Win32 W functions natively. Does @emph{not} |
1946 | add @code{-lunicows} to @file{libgcj.spec}. The built executables will | |
c1c3bb0c ME |
1947 | only run on Microsoft Windows NT and above. |
1948 | @end table | |
1949 | @end table | |
1950 | ||
1951 | @subsubheading AWT-Specific Options | |
1952 | ||
1953 | @table @code | |
1954 | @item --with-x | |
1955 | Use the X Window System. | |
1956 | ||
1957 | @item --enable-java-awt=PEER(S) | |
1958 | Specifies the AWT peer library or libraries to build alongside | |
8a36672b JM |
1959 | @samp{libgcj}. If this option is unspecified or disabled, AWT |
1960 | will be non-functional. Current valid values are @option{gtk} and | |
1961 | @option{xlib}. Multiple libraries should be separated by a | |
431ae0bf | 1962 | comma (i.e.@: @option{--enable-java-awt=gtk,xlib}). |
c1c3bb0c ME |
1963 | |
1964 | @item --enable-gtk-cairo | |
8a36672b | 1965 | Build the cairo Graphics2D implementation on GTK@. |
c1c3bb0c ME |
1966 | |
1967 | @item --enable-java-gc=TYPE | |
8a36672b | 1968 | Choose garbage collector. Defaults to @option{boehm} if unspecified. |
c1c3bb0c ME |
1969 | |
1970 | @item --disable-gtktest | |
1971 | Do not try to compile and run a test GTK+ program. | |
1972 | ||
1973 | @item --disable-glibtest | |
1974 | Do not try to compile and run a test GLIB program. | |
1975 | ||
1976 | @item --with-libart-prefix=PFX | |
1977 | Prefix where libart is installed (optional). | |
1978 | ||
1979 | @item --with-libart-exec-prefix=PFX | |
1980 | Exec prefix where libart is installed (optional). | |
1981 | ||
1982 | @item --disable-libarttest | |
1983 | Do not try to compile and run a test libart program. | |
1984 | ||
1985 | @end table | |
f42974dc DW |
1986 | |
1987 | @html | |
b8db17af | 1988 | <hr /> |
f42974dc DW |
1989 | <p> |
1990 | @end html | |
1991 | @ifhtml | |
1992 | @uref{./index.html,,Return to the GCC Installation page} | |
1993 | @end ifhtml | |
1994 | @end ifset | |
1995 | ||
1996 | @c ***Building**************************************************************** | |
6cfb3f16 | 1997 | @ifnothtml |
f42974dc DW |
1998 | @comment node-name, next, previous, up |
1999 | @node Building, Testing, Configuration, Installing GCC | |
6cfb3f16 | 2000 | @end ifnothtml |
f42974dc | 2001 | @ifset buildhtml |
f42974dc DW |
2002 | @ifnothtml |
2003 | @chapter Building | |
2004 | @end ifnothtml | |
2005 | @cindex Installing GCC: Building | |
2006 | ||
2007 | Now that GCC is configured, you are ready to build the compiler and | |
2008 | runtime libraries. | |
2009 | ||
b8df899a | 2010 | Some commands executed when making the compiler may fail (return a |
7ba4ca63 | 2011 | nonzero status) and be ignored by @command{make}. These failures, which |
b8df899a JM |
2012 | are often due to files that were not found, are expected, and can safely |
2013 | be ignored. | |
2014 | ||
2015 | It is normal to have compiler warnings when compiling certain files. | |
2016 | Unless you are a GCC developer, you can generally ignore these warnings | |
dd859b8a KG |
2017 | unless they cause compilation to fail. Developers should attempt to fix |
2018 | any warnings encountered, however they can temporarily continue past | |
2019 | warnings-as-errors by specifying the configure flag | |
2020 | @option{--disable-werror}. | |
b8df899a JM |
2021 | |
2022 | On certain old systems, defining certain environment variables such as | |
6cfb3f16 | 2023 | @env{CC} can interfere with the functioning of @command{make}. |
b8df899a JM |
2024 | |
2025 | If you encounter seemingly strange errors when trying to build the | |
2026 | compiler in a directory other than the source directory, it could be | |
2027 | because you have previously configured the compiler in the source | |
2028 | directory. Make sure you have done all the necessary preparations. | |
2029 | ||
2030 | If you build GCC on a BSD system using a directory stored in an old System | |
4c64396e | 2031 | V file system, problems may occur in running @command{fixincludes} if the |
b8df899a JM |
2032 | System V file system doesn't support symbolic links. These problems |
2033 | result in a failure to fix the declaration of @code{size_t} in | |
2034 | @file{sys/types.h}. If you find that @code{size_t} is a signed type and | |
2035 | that type mismatches occur, this could be the cause. | |
2036 | ||
161d7b59 | 2037 | The solution is not to use such a directory for building GCC@. |
f42974dc | 2038 | |
01d419ae | 2039 | Similarly, when building from SVN or snapshots, or if you modify |
e8645a40 TT |
2040 | @file{*.l} files, you need the Flex lexical analyzer generator |
2041 | installed. If you do not modify @file{*.l} files, releases contain | |
2042 | the Flex-generated files and you do not need Flex installed to build | |
2043 | them. There is still one Flex-based lexical analyzer (part of the | |
2044 | build machinery, not of GCC itself) that is used even if you only | |
2045 | build the C front end. | |
f85b8d1a | 2046 | |
80521187 | 2047 | When building from SVN or snapshots, or if you modify Texinfo |
7326a39e | 2048 | documentation, you need version 4.7 or later of Texinfo installed if you |
f85b8d1a JM |
2049 | want Info documentation to be regenerated. Releases contain Info |
2050 | documentation pre-built for the unmodified documentation in the release. | |
2051 | ||
f42974dc DW |
2052 | @section Building a native compiler |
2053 | ||
f5c3bb4b PB |
2054 | For a native build, the default configuration is to perform |
2055 | a 3-stage bootstrap of the compiler when @samp{make} is invoked. | |
2056 | This will build the entire GCC system and ensure that it compiles | |
2057 | itself correctly. It can be disabled with the @option{--disable-bootstrap} | |
2058 | parameter to @samp{configure}, but bootstrapping is suggested because | |
2059 | the compiler will be tested more completely and could also have | |
2060 | better performance. | |
2061 | ||
2062 | The bootstrapping process will complete the following steps: | |
f42974dc DW |
2063 | |
2064 | @itemize @bullet | |
2065 | @item | |
80521187 | 2066 | Build tools necessary to build the compiler. |
f42974dc DW |
2067 | |
2068 | @item | |
cc11cc9b PB |
2069 | Perform a 3-stage bootstrap of the compiler. This includes building |
2070 | three times the target tools for use by the compiler such as binutils | |
2071 | (bfd, binutils, gas, gprof, ld, and opcodes) if they have been | |
2072 | individually linked or moved into the top level GCC source tree before | |
2073 | configuring. | |
f42974dc DW |
2074 | |
2075 | @item | |
2076 | Perform a comparison test of the stage2 and stage3 compilers. | |
2077 | ||
2078 | @item | |
2079 | Build runtime libraries using the stage3 compiler from the previous step. | |
f9047ed3 | 2080 | |
f42974dc DW |
2081 | @end itemize |
2082 | ||
38209993 | 2083 | If you are short on disk space you might consider @samp{make |
cc11cc9b PB |
2084 | bootstrap-lean} instead. The sequence of compilation is the |
2085 | same described above, but object files from the stage1 and | |
f42974dc DW |
2086 | stage2 of the 3-stage bootstrap of the compiler are deleted as |
2087 | soon as they are no longer needed. | |
2088 | ||
1c8bd6a3 PB |
2089 | If you wish to use non-default GCC flags when compiling the stage2 |
2090 | and stage3 compilers, set @code{BOOT_CFLAGS} on the command line when | |
2091 | doing @samp{make}. For example, if you want to save additional space | |
2092 | during the bootstrap and in the final installation as well, you can | |
2093 | build the compiler binaries without debugging information as in the | |
2094 | following example. This will save roughly 40% of disk space both for | |
2095 | the bootstrap and the final installation. (Libraries will still contain | |
2096 | debugging information.) | |
f42974dc | 2097 | |
3ab51846 | 2098 | @smallexample |
1c8bd6a3 | 2099 | make BOOT_CFLAGS='-O' bootstrap |
3ab51846 | 2100 | @end smallexample |
8c085f6f | 2101 | |
1c8bd6a3 PB |
2102 | You can place non-default optimization flags into @code{BOOT_CFLAGS}; they |
2103 | are less well tested here than the default of @samp{-g -O2}, but should | |
2104 | still work. In a few cases, you may find that you need to specify special | |
2105 | flags such as @option{-msoft-float} here to complete the bootstrap; or, | |
2106 | if the native compiler miscompiles the stage1 compiler, you may need | |
2107 | to work around this, by choosing @code{BOOT_CFLAGS} to avoid the parts | |
2108 | of the stage1 compiler that were miscompiled, or by using @samp{make | |
f85b8d1a JM |
2109 | bootstrap4} to increase the number of stages of bootstrap. |
2110 | ||
1c8bd6a3 PB |
2111 | @code{BOOT_CFLAGS} does not apply to bootstrapped target libraries. |
2112 | Since these are always compiled with the compiler currently being | |
2113 | bootstrapped, you can use @code{CFLAGS_FOR_TARGET} to modify their | |
2114 | compilation flags, as for non-bootstrapped target libraries. | |
2115 | Again, if the native compiler miscompiles the stage1 compiler, you may | |
2116 | need to work around this by avoiding non-working parts of the stage1 | |
4a4a4e99 | 2117 | compiler. Use @code{STAGE1_TFLAGS} to this end. |
c872077c | 2118 | |
6cfb3f16 | 2119 | If you used the flag @option{--enable-languages=@dots{}} to restrict |
f42974dc | 2120 | the compilers to be built, only those you've actually enabled will be |
767094dd | 2121 | built. This will of course only build those runtime libraries, for |
f42974dc | 2122 | which the particular compiler has been built. Please note, |
cc11cc9b | 2123 | that re-defining @env{LANGUAGES} when calling @samp{make} |
ef88b07d | 2124 | @strong{does not} work anymore! |
f42974dc | 2125 | |
f85b8d1a | 2126 | If the comparison of stage2 and stage3 fails, this normally indicates |
eea81d3e | 2127 | that the stage2 compiler has compiled GCC incorrectly, and is therefore |
f85b8d1a JM |
2128 | a potentially serious bug which you should investigate and report. (On |
2129 | a few systems, meaningful comparison of object files is impossible; they | |
2130 | always appear ``different''. If you encounter this problem, you will | |
2131 | need to disable comparison in the @file{Makefile}.) | |
f42974dc | 2132 | |
cc11cc9b PB |
2133 | If you do not want to bootstrap your compiler, you can configure with |
2134 | @option{--disable-bootstrap}. In particular cases, you may want to | |
2135 | bootstrap your compiler even if the target system is not the same as | |
2136 | the one you are building on: for example, you could build a | |
2137 | @code{powerpc-unknown-linux-gnu} toolchain on a | |
2138 | @code{powerpc64-unknown-linux-gnu} host. In this case, pass | |
2139 | @option{--enable-bootstrap} to the configure script. | |
2140 | ||
e12c4094 AO |
2141 | @code{BUILD_CONFIG} can be used to bring in additional customization |
2142 | to the build. It can be set to a whitespace-separated list of names. | |
2143 | For each such @code{NAME}, top-level @file{config/@code{NAME}.mk} will | |
2144 | be included by the top-level @file{Makefile}, bringing in any settings | |
2145 | it contains. The default @code{BUILD_CONFIG} can be set using the | |
2146 | configure option @option{--with-build-config=@code{NAME}...}. Some | |
2147 | examples of supported build configurations are: | |
4a4a4e99 AO |
2148 | |
2149 | @table @asis | |
2150 | @item @samp{bootstrap-O1} | |
2151 | Removes any @option{-O}-started option from @code{BOOT_CFLAGS}, and adds | |
2152 | @option{-O1} to it. @samp{BUILD_CONFIG=bootstrap-O1} is equivalent to | |
2153 | @samp{BOOT_CFLAGS='-g -O1'}. | |
2154 | ||
2155 | @item @samp{bootstrap-O3} | |
2156 | Analogous to @code{bootstrap-O1}. | |
2157 | ||
339325b3 AO |
2158 | @item @samp{bootstrap-lto} |
2159 | Enables Link-Time Optimization for host tools during bootstrapping. | |
2160 | @samp{BUILD_CONFIG=bootstrap-lto} is equivalent to adding | |
2161 | @option{-flto} to @samp{BOOT_CFLAGS}. | |
2162 | ||
4a4a4e99 | 2163 | @item @samp{bootstrap-debug} |
b5b8b0ac | 2164 | Verifies that the compiler generates the same executable code, whether |
e12c4094 AO |
2165 | or not it is asked to emit debug information. To this end, this |
2166 | option builds stage2 host programs without debug information, and uses | |
b5b8b0ac AO |
2167 | @file{contrib/compare-debug} to compare them with the stripped stage3 |
2168 | object files. If @code{BOOT_CFLAGS} is overridden so as to not enable | |
2169 | debug information, stage2 will have it, and stage3 won't. This option | |
e12c4094 AO |
2170 | is enabled by default when GCC bootstrapping is enabled, if |
2171 | @code{strip} can turn object files compiled with and without debug | |
2172 | info into identical object files. In addition to better test | |
2173 | coverage, this option makes default bootstraps faster and leaner. | |
b5b8b0ac AO |
2174 | |
2175 | @item @samp{bootstrap-debug-big} | |
e12c4094 AO |
2176 | Rather than comparing stripped object files, as in |
2177 | @code{bootstrap-debug}, this option saves internal compiler dumps | |
2178 | during stage2 and stage3 and compares them as well, which helps catch | |
2179 | additional potential problems, but at a great cost in terms of disk | |
2180 | space. It can be specified in addition to @samp{bootstrap-debug}. | |
b5b8b0ac AO |
2181 | |
2182 | @item @samp{bootstrap-debug-lean} | |
2183 | This option saves disk space compared with @code{bootstrap-debug-big}, | |
2184 | but at the expense of some recompilation. Instead of saving the dumps | |
2185 | of stage2 and stage3 until the final compare, it uses | |
2186 | @option{-fcompare-debug} to generate, compare and remove the dumps | |
2187 | during stage3, repeating the compilation that already took place in | |
2188 | stage2, whose dumps were not saved. | |
2189 | ||
2190 | @item @samp{bootstrap-debug-lib} | |
2191 | This option tests executable code invariance over debug information | |
2192 | generation on target libraries, just like @code{bootstrap-debug-lean} | |
2193 | tests it on host programs. It builds stage3 libraries with | |
2194 | @option{-fcompare-debug}, and it can be used along with any of the | |
2195 | @code{bootstrap-debug} options above. | |
2196 | ||
2197 | There aren't @code{-lean} or @code{-big} counterparts to this option | |
2198 | because most libraries are only build in stage3, so bootstrap compares | |
2199 | would not get significant coverage. Moreover, the few libraries built | |
2200 | in stage2 are used in stage3 host programs, so we wouldn't want to | |
2201 | compile stage2 libraries with different options for comparison purposes. | |
2202 | ||
2203 | @item @samp{bootstrap-debug-ckovw} | |
2204 | Arranges for error messages to be issued if the compiler built on any | |
2205 | stage is run without the option @option{-fcompare-debug}. This is | |
2206 | useful to verify the full @option{-fcompare-debug} testing coverage. It | |
2207 | must be used along with @code{bootstrap-debug-lean} and | |
2208 | @code{bootstrap-debug-lib}. | |
2209 | ||
2210 | @item @samp{bootstrap-time} | |
2211 | Arranges for the run time of each program started by the GCC driver, | |
2212 | built in any stage, to be logged to @file{time.log}, in the top level of | |
2213 | the build tree. | |
4a4a4e99 AO |
2214 | |
2215 | @end table | |
cc11cc9b | 2216 | |
f42974dc DW |
2217 | @section Building a cross compiler |
2218 | ||
f42974dc DW |
2219 | When building a cross compiler, it is not generally possible to do a |
2220 | 3-stage bootstrap of the compiler. This makes for an interesting problem | |
161d7b59 | 2221 | as parts of GCC can only be built with GCC@. |
f42974dc | 2222 | |
0b70519f | 2223 | To build a cross compiler, we recommend first building and installing a |
f42974dc | 2224 | native compiler. You can then use the native GCC compiler to build the |
635771af JM |
2225 | cross compiler. The installed native compiler needs to be GCC version |
2226 | 2.95 or later. | |
f42974dc | 2227 | |
c076e75f DD |
2228 | If the cross compiler is to be built with support for the Java |
2229 | programming language and the ability to compile .java source files is | |
2230 | desired, the installed native compiler used to build the cross | |
2231 | compiler needs to be the same GCC version as the cross compiler. In | |
2232 | addition the cross compiler needs to be configured with | |
2233 | @option{--with-ecj-jar=@dots{}}. | |
2234 | ||
f42974dc | 2235 | Assuming you have already installed a native copy of GCC and configured |
6cfb3f16 | 2236 | your cross compiler, issue the command @command{make}, which performs the |
f42974dc DW |
2237 | following steps: |
2238 | ||
2239 | @itemize @bullet | |
2240 | @item | |
80521187 | 2241 | Build host tools necessary to build the compiler. |
f42974dc DW |
2242 | |
2243 | @item | |
2244 | Build target tools for use by the compiler such as binutils (bfd, | |
2245 | binutils, gas, gprof, ld, and opcodes) | |
2246 | if they have been individually linked or moved into the top level GCC source | |
2247 | tree before configuring. | |
2248 | ||
2249 | @item | |
2250 | Build the compiler (single stage only). | |
2251 | ||
2252 | @item | |
2253 | Build runtime libraries using the compiler from the previous step. | |
2254 | @end itemize | |
2255 | ||
2256 | Note that if an error occurs in any step the make process will exit. | |
2257 | ||
01e97976 JM |
2258 | If you are not building GNU binutils in the same source tree as GCC, |
2259 | you will need a cross-assembler and cross-linker installed before | |
2260 | configuring GCC@. Put them in the directory | |
2261 | @file{@var{prefix}/@var{target}/bin}. Here is a table of the tools | |
2262 | you should put in this directory: | |
2263 | ||
2264 | @table @file | |
2265 | @item as | |
2266 | This should be the cross-assembler. | |
2267 | ||
2268 | @item ld | |
2269 | This should be the cross-linker. | |
2270 | ||
2271 | @item ar | |
2272 | This should be the cross-archiver: a program which can manipulate | |
2273 | archive files (linker libraries) in the target machine's format. | |
2274 | ||
2275 | @item ranlib | |
2276 | This should be a program to construct a symbol table in an archive file. | |
2277 | @end table | |
2278 | ||
2279 | The installation of GCC will find these programs in that directory, | |
2280 | and copy or link them to the proper place to for the cross-compiler to | |
2281 | find them when run later. | |
2282 | ||
2283 | The easiest way to provide these files is to build the Binutils package. | |
2284 | Configure it with the same @option{--host} and @option{--target} | |
2285 | options that you use for configuring GCC, then build and install | |
2286 | them. They install their executables automatically into the proper | |
2287 | directory. Alas, they do not support all the targets that GCC | |
2288 | supports. | |
2289 | ||
2290 | If you are not building a C library in the same source tree as GCC, | |
2291 | you should also provide the target libraries and headers before | |
2292 | configuring GCC, specifying the directories with | |
2293 | @option{--with-sysroot} or @option{--with-headers} and | |
2294 | @option{--with-libs}. Many targets also require ``start files'' such | |
2295 | as @file{crt0.o} and | |
2296 | @file{crtn.o} which are linked into each executable. There may be several | |
2297 | alternatives for @file{crt0.o}, for use with profiling or other | |
2298 | compilation options. Check your target's definition of | |
2299 | @code{STARTFILE_SPEC} to find out what start files it uses. | |
2300 | ||
f42974dc DW |
2301 | @section Building in parallel |
2302 | ||
0b70519f | 2303 | GNU Make 3.80 and above, which is necessary to build GCC, support |
d7f755c3 PB |
2304 | building in parallel. To activate this, you can use @samp{make -j 2} |
2305 | instead of @samp{make}. You can also specify a bigger number, and | |
cc11cc9b PB |
2306 | in most cases using a value greater than the number of processors in |
2307 | your machine will result in fewer and shorter I/O latency hits, thus | |
2308 | improving overall throughput; this is especially true for slow drives | |
2309 | and network filesystems. | |
f42974dc | 2310 | |
e23381df GB |
2311 | @section Building the Ada compiler |
2312 | ||
2313 | In order to build GNAT, the Ada compiler, you need a working GNAT | |
1004318e | 2314 | compiler (GCC version 4.0 or later). |
cc11cc9b PB |
2315 | This includes GNAT tools such as @command{gnatmake} and |
2316 | @command{gnatlink}, since the Ada front end is written in Ada and | |
2317 | uses some GNAT-specific extensions. | |
2318 | ||
2319 | In order to build a cross compiler, it is suggested to install | |
2320 | the new compiler as native first, and then use it to build the cross | |
2321 | compiler. | |
e23381df | 2322 | |
38e23049 JM |
2323 | @command{configure} does not test whether the GNAT installation works |
2324 | and has a sufficiently recent version; if too old a GNAT version is | |
2325 | installed, the build will fail unless @option{--enable-languages} is | |
2326 | used to disable building the Ada front end. | |
e23381df | 2327 | |
e397a9f1 ST |
2328 | @env{ADA_INCLUDE_PATH} and @env{ADA_OBJECT_PATH} environment variables |
2329 | must not be set when building the Ada compiler, the Ada tools, or the | |
2330 | Ada runtime libraries. You can check that your build environment is clean | |
2331 | by verifying that @samp{gnatls -v} lists only one explicit path in each | |
2332 | section. | |
2333 | ||
8f231b5d JH |
2334 | @section Building with profile feedback |
2335 | ||
2336 | It is possible to use profile feedback to optimize the compiler itself. This | |
2337 | should result in a faster compiler binary. Experiments done on x86 using gcc | |
2338 | 3.3 showed approximately 7 percent speedup on compiling C programs. To | |
cc11cc9b | 2339 | bootstrap the compiler with profile feedback, use @code{make profiledbootstrap}. |
8f231b5d JH |
2340 | |
2341 | When @samp{make profiledbootstrap} is run, it will first build a @code{stage1} | |
2342 | compiler. This compiler is used to build a @code{stageprofile} compiler | |
2343 | instrumented to collect execution counts of instruction and branch | |
2344 | probabilities. Then runtime libraries are compiled with profile collected. | |
2345 | Finally a @code{stagefeedback} compiler is built using the information collected. | |
2346 | ||
cc11cc9b | 2347 | Unlike standard bootstrap, several additional restrictions apply. The |
8f231b5d JH |
2348 | compiler used to build @code{stage1} needs to support a 64-bit integral type. |
2349 | It is recommended to only use GCC for this. Also parallel make is currently | |
2350 | not supported since collisions in profile collecting may occur. | |
2351 | ||
f42974dc | 2352 | @html |
b8db17af | 2353 | <hr /> |
f42974dc DW |
2354 | <p> |
2355 | @end html | |
2356 | @ifhtml | |
2357 | @uref{./index.html,,Return to the GCC Installation page} | |
2358 | @end ifhtml | |
2359 | @end ifset | |
2360 | ||
2361 | @c ***Testing***************************************************************** | |
6cfb3f16 | 2362 | @ifnothtml |
f42974dc DW |
2363 | @comment node-name, next, previous, up |
2364 | @node Testing, Final install, Building, Installing GCC | |
6cfb3f16 | 2365 | @end ifnothtml |
f42974dc | 2366 | @ifset testhtml |
f42974dc DW |
2367 | @ifnothtml |
2368 | @chapter Installing GCC: Testing | |
2369 | @end ifnothtml | |
2370 | @cindex Testing | |
2371 | @cindex Installing GCC: Testing | |
2372 | @cindex Testsuite | |
2373 | ||
f97903cc JJ |
2374 | Before you install GCC, we encourage you to run the testsuites and to |
2375 | compare your results with results from a similar configuration that have | |
2376 | been submitted to the | |
2377 | @uref{http://gcc.gnu.org/ml/gcc-testresults/,,gcc-testresults mailing list}. | |
05253aed JJ |
2378 | Some of these archived results are linked from the build status lists |
2379 | at @uref{http://gcc.gnu.org/buildstat.html}, although not everyone who | |
2380 | reports a successful build runs the testsuites and submits the results. | |
f97903cc JJ |
2381 | This step is optional and may require you to download additional software, |
2382 | but it can give you confidence in your new GCC installation or point out | |
8a36672b | 2383 | problems before you install and start using your new GCC@. |
f42974dc | 2384 | |
f9047ed3 | 2385 | First, you must have @uref{download.html,,downloaded the testsuites}. |
f97903cc JJ |
2386 | These are part of the full distribution, but if you downloaded the |
2387 | ``core'' compiler plus any front ends, you must download the testsuites | |
2388 | separately. | |
f42974dc | 2389 | |
f97903cc | 2390 | Second, you must have the testing tools installed. This includes |
80521187 GP |
2391 | @uref{http://www.gnu.org/software/dejagnu/,,DejaGnu}, Tcl, and Expect; |
2392 | the DejaGnu site has links to these. | |
f42974dc | 2393 | |
8cacda7c GP |
2394 | If the directories where @command{runtest} and @command{expect} were |
2395 | installed are not in the @env{PATH}, you may need to set the following | |
2396 | environment variables appropriately, as in the following example (which | |
2397 | assumes that DejaGnu has been installed under @file{/usr/local}): | |
f42974dc | 2398 | |
3ab51846 | 2399 | @smallexample |
f42974dc DW |
2400 | TCL_LIBRARY = /usr/local/share/tcl8.0 |
2401 | DEJAGNULIBS = /usr/local/share/dejagnu | |
3ab51846 | 2402 | @end smallexample |
f42974dc | 2403 | |
8cacda7c | 2404 | (On systems such as Cygwin, these paths are required to be actual |
f42974dc | 2405 | paths, not mounts or links; presumably this is due to some lack of |
8cacda7c | 2406 | portability in the DejaGnu code.) |
ecb7d6b3 | 2407 | |
f42974dc DW |
2408 | |
2409 | Finally, you can run the testsuite (which may take a long time): | |
3ab51846 | 2410 | @smallexample |
ef88b07d | 2411 | cd @var{objdir}; make -k check |
3ab51846 | 2412 | @end smallexample |
f42974dc | 2413 | |
794aca5d WB |
2414 | This will test various components of GCC, such as compiler |
2415 | front ends and runtime libraries. While running the testsuite, DejaGnu | |
2416 | might emit some harmless messages resembling | |
daf2f129 | 2417 | @samp{WARNING: Couldn't find the global config file.} or |
794aca5d | 2418 | @samp{WARNING: Couldn't find tool init file} that can be ignored. |
06809951 | 2419 | |
82161911 DD |
2420 | If you are testing a cross-compiler, you may want to run the testsuite |
2421 | on a simulator as described at @uref{http://gcc.gnu.org/simtest-howto.html}. | |
2422 | ||
962e6e00 | 2423 | @section How can you run the testsuite on selected tests? |
f42974dc | 2424 | |
794aca5d WB |
2425 | In order to run sets of tests selectively, there are targets |
2426 | @samp{make check-gcc} and @samp{make check-g++} | |
2427 | in the @file{gcc} subdirectory of the object directory. You can also | |
2428 | just run @samp{make check} in a subdirectory of the object directory. | |
2429 | ||
2430 | ||
2431 | A more selective way to just run all @command{gcc} execute tests in the | |
2432 | testsuite is to use | |
f42974dc | 2433 | |
3ab51846 | 2434 | @smallexample |
6cfb3f16 | 2435 | make check-gcc RUNTESTFLAGS="execute.exp @var{other-options}" |
3ab51846 | 2436 | @end smallexample |
f42974dc | 2437 | |
794aca5d WB |
2438 | Likewise, in order to run only the @command{g++} ``old-deja'' tests in |
2439 | the testsuite with filenames matching @samp{9805*}, you would use | |
f42974dc | 2440 | |
3ab51846 | 2441 | @smallexample |
6cfb3f16 | 2442 | make check-g++ RUNTESTFLAGS="old-deja.exp=9805* @var{other-options}" |
3ab51846 | 2443 | @end smallexample |
f42974dc | 2444 | |
6cfb3f16 JM |
2445 | The @file{*.exp} files are located in the testsuite directories of the GCC |
2446 | source, the most important ones being @file{compile.exp}, | |
2447 | @file{execute.exp}, @file{dg.exp} and @file{old-deja.exp}. | |
2448 | To get a list of the possible @file{*.exp} files, pipe the | |
38209993 | 2449 | output of @samp{make check} into a file and look at the |
6cfb3f16 | 2450 | @samp{Running @dots{} .exp} lines. |
f42974dc | 2451 | |
e08737dc PE |
2452 | @section Passing options and running multiple testsuites |
2453 | ||
2454 | You can pass multiple options to the testsuite using the | |
2455 | @samp{--target_board} option of DejaGNU, either passed as part of | |
2456 | @samp{RUNTESTFLAGS}, or directly to @command{runtest} if you prefer to | |
2457 | work outside the makefiles. For example, | |
2458 | ||
3ab51846 | 2459 | @smallexample |
311c6da4 | 2460 | make check-g++ RUNTESTFLAGS="--target_board=unix/-O3/-fmerge-constants" |
3ab51846 | 2461 | @end smallexample |
e08737dc PE |
2462 | |
2463 | will run the standard @command{g++} testsuites (``unix'' is the target name | |
2464 | for a standard native testsuite situation), passing | |
311c6da4 | 2465 | @samp{-O3 -fmerge-constants} to the compiler on every test, i.e., |
e08737dc PE |
2466 | slashes separate options. |
2467 | ||
2468 | You can run the testsuites multiple times using combinations of options | |
2469 | with a syntax similar to the brace expansion of popular shells: | |
2470 | ||
3ab51846 | 2471 | @smallexample |
4c754988 | 2472 | @dots{}"--target_board=arm-sim\@{-mhard-float,-msoft-float\@}\@{-O1,-O2,-O3,\@}" |
3ab51846 | 2473 | @end smallexample |
e08737dc PE |
2474 | |
2475 | (Note the empty option caused by the trailing comma in the final group.) | |
2476 | The following will run each testsuite eight times using the @samp{arm-sim} | |
2477 | target, as if you had specified all possible combinations yourself: | |
2478 | ||
3ab51846 | 2479 | @smallexample |
e08737dc PE |
2480 | --target_board=arm-sim/-mhard-float/-O1 |
2481 | --target_board=arm-sim/-mhard-float/-O2 | |
2482 | --target_board=arm-sim/-mhard-float/-O3 | |
2483 | --target_board=arm-sim/-mhard-float | |
2484 | --target_board=arm-sim/-msoft-float/-O1 | |
2485 | --target_board=arm-sim/-msoft-float/-O2 | |
2486 | --target_board=arm-sim/-msoft-float/-O3 | |
2487 | --target_board=arm-sim/-msoft-float | |
3ab51846 | 2488 | @end smallexample |
e08737dc PE |
2489 | |
2490 | They can be combined as many times as you wish, in arbitrary ways. This | |
2491 | list: | |
2492 | ||
3ab51846 | 2493 | @smallexample |
4c754988 | 2494 | @dots{}"--target_board=unix/-Wextra\@{-O3,-fno-strength\@}\@{-fomit-frame,\@}" |
3ab51846 | 2495 | @end smallexample |
e08737dc PE |
2496 | |
2497 | will generate four combinations, all involving @samp{-Wextra}. | |
2498 | ||
2499 | The disadvantage to this method is that the testsuites are run in serial, | |
2500 | which is a waste on multiprocessor systems. For users with GNU Make and | |
2501 | a shell which performs brace expansion, you can run the testsuites in | |
2502 | parallel by having the shell perform the combinations and @command{make} | |
2503 | do the parallel runs. Instead of using @samp{--target_board}, use a | |
2504 | special makefile target: | |
2505 | ||
3ab51846 | 2506 | @smallexample |
e08737dc | 2507 | make -j@var{N} check-@var{testsuite}//@var{test-target}/@var{option1}/@var{option2}/@dots{} |
3ab51846 | 2508 | @end smallexample |
e08737dc PE |
2509 | |
2510 | For example, | |
2511 | ||
3ab51846 | 2512 | @smallexample |
e08737dc | 2513 | make -j3 check-gcc//sh-hms-sim/@{-m1,-m2,-m3,-m3e,-m4@}/@{,-nofpu@} |
3ab51846 | 2514 | @end smallexample |
e08737dc PE |
2515 | |
2516 | will run three concurrent ``make-gcc'' testsuites, eventually testing all | |
2517 | ten combinations as described above. Note that this is currently only | |
2518 | supported in the @file{gcc} subdirectory. (To see how this works, try | |
2519 | typing @command{echo} before the example given here.) | |
2520 | ||
2521 | ||
2522 | @section Additional testing for Java Class Libraries | |
2523 | ||
688d8b84 RM |
2524 | The Java runtime tests can be executed via @samp{make check} |
2525 | in the @file{@var{target}/libjava/testsuite} directory in | |
2526 | the build tree. | |
f702e700 | 2527 | |
4eb3e795 | 2528 | The @uref{http://sourceware.org/mauve/,,Mauve Project} provides |
f702e700 JJ |
2529 | a suite of tests for the Java Class Libraries. This suite can be run |
2530 | as part of libgcj testing by placing the Mauve tree within the libjava | |
2531 | testsuite at @file{libjava/testsuite/libjava.mauve/mauve}, or by | |
2532 | specifying the location of that tree when invoking @samp{make}, as in | |
2533 | @samp{make MAUVEDIR=~/mauve check}. | |
2534 | ||
f42974dc DW |
2535 | @section How to interpret test results |
2536 | ||
794aca5d | 2537 | The result of running the testsuite are various @file{*.sum} and @file{*.log} |
767094dd | 2538 | files in the testsuite subdirectories. The @file{*.log} files contain a |
f42974dc | 2539 | detailed log of the compiler invocations and the corresponding |
daf2f129 JM |
2540 | results, the @file{*.sum} files summarize the results. These summaries |
2541 | contain status codes for all tests: | |
f42974dc DW |
2542 | |
2543 | @itemize @bullet | |
2544 | @item | |
2545 | PASS: the test passed as expected | |
2546 | @item | |
2547 | XPASS: the test unexpectedly passed | |
2548 | @item | |
2549 | FAIL: the test unexpectedly failed | |
2550 | @item | |
2551 | XFAIL: the test failed as expected | |
2552 | @item | |
2553 | UNSUPPORTED: the test is not supported on this platform | |
2554 | @item | |
2555 | ERROR: the testsuite detected an error | |
2556 | @item | |
2557 | WARNING: the testsuite detected a possible problem | |
2558 | @end itemize | |
2559 | ||
38209993 | 2560 | It is normal for some tests to report unexpected failures. At the |
962e6e00 JM |
2561 | current time the testing harness does not allow fine grained control |
2562 | over whether or not a test is expected to fail. This problem should | |
2563 | be fixed in future releases. | |
f42974dc DW |
2564 | |
2565 | ||
2566 | @section Submitting test results | |
2567 | ||
2568 | If you want to report the results to the GCC project, use the | |
767094dd | 2569 | @file{contrib/test_summary} shell script. Start it in the @var{objdir} with |
f42974dc | 2570 | |
3ab51846 | 2571 | @smallexample |
6cfb3f16 JM |
2572 | @var{srcdir}/contrib/test_summary -p your_commentary.txt \ |
2573 | -m gcc-testresults@@gcc.gnu.org |sh | |
3ab51846 | 2574 | @end smallexample |
f42974dc | 2575 | |
6cfb3f16 | 2576 | This script uses the @command{Mail} program to send the results, so |
767094dd | 2577 | make sure it is in your @env{PATH}. The file @file{your_commentary.txt} is |
f42974dc | 2578 | prepended to the testsuite summary and should contain any special |
767094dd | 2579 | remarks you have on your results or your build environment. Please |
f42974dc | 2580 | do not edit the testsuite result block or the subject line, as these |
05c425a9 | 2581 | messages may be automatically processed. |
f42974dc | 2582 | |
aed5964b | 2583 | @html |
b8db17af | 2584 | <hr /> |
aed5964b JM |
2585 | <p> |
2586 | @end html | |
2587 | @ifhtml | |
2588 | @uref{./index.html,,Return to the GCC Installation page} | |
2589 | @end ifhtml | |
f42974dc DW |
2590 | @end ifset |
2591 | ||
2592 | @c ***Final install*********************************************************** | |
6cfb3f16 | 2593 | @ifnothtml |
f42974dc DW |
2594 | @comment node-name, next, previous, up |
2595 | @node Final install, , Testing, Installing GCC | |
6cfb3f16 | 2596 | @end ifnothtml |
f42974dc | 2597 | @ifset finalinstallhtml |
f42974dc DW |
2598 | @ifnothtml |
2599 | @chapter Installing GCC: Final installation | |
2600 | @end ifnothtml | |
2601 | ||
eea81d3e | 2602 | Now that GCC has been built (and optionally tested), you can install it with |
3ab51846 | 2603 | @smallexample |
eea81d3e | 2604 | cd @var{objdir}; make install |
3ab51846 | 2605 | @end smallexample |
f42974dc | 2606 | |
06809951 | 2607 | We strongly recommend to install into a target directory where there is |
4b322f43 JB |
2608 | no previous version of GCC present. Also, the GNAT runtime should not |
2609 | be stripped, as this would break certain features of the debugger that | |
2610 | depend on this debugging information (catching Ada exceptions for | |
2611 | instance). | |
06809951 | 2612 | |
f42974dc | 2613 | That step completes the installation of GCC; user level binaries can |
8e5f33ff GK |
2614 | be found in @file{@var{prefix}/bin} where @var{prefix} is the value |
2615 | you specified with the @option{--prefix} to configure (or | |
2616 | @file{/usr/local} by default). (If you specified @option{--bindir}, | |
2617 | that directory will be used instead; otherwise, if you specified | |
2618 | @option{--exec-prefix}, @file{@var{exec-prefix}/bin} will be used.) | |
2619 | Headers for the C++ and Java libraries are installed in | |
2620 | @file{@var{prefix}/include}; libraries in @file{@var{libdir}} | |
2621 | (normally @file{@var{prefix}/lib}); internal parts of the compiler in | |
2622 | @file{@var{libdir}/gcc} and @file{@var{libexecdir}/gcc}; documentation | |
2623 | in info format in @file{@var{infodir}} (normally | |
2624 | @file{@var{prefix}/info}). | |
f42974dc | 2625 | |
53b50ac1 CC |
2626 | When installing cross-compilers, GCC's executables |
2627 | are not only installed into @file{@var{bindir}}, that | |
2628 | is, @file{@var{exec-prefix}/bin}, but additionally into | |
2629 | @file{@var{exec-prefix}/@var{target-alias}/bin}, if that directory | |
2630 | exists. Typically, such @dfn{tooldirs} hold target-specific | |
2631 | binutils, including assembler and linker. | |
2632 | ||
2633 | Installation into a temporary staging area or into a @command{chroot} | |
2634 | jail can be achieved with the command | |
2635 | ||
3ab51846 | 2636 | @smallexample |
53b50ac1 | 2637 | make DESTDIR=@var{path-to-rootdir} install |
3ab51846 | 2638 | @end smallexample |
53b50ac1 CC |
2639 | |
2640 | @noindent where @var{path-to-rootdir} is the absolute path of | |
2641 | a directory relative to which all installation paths will be | |
2642 | interpreted. Note that the directory specified by @code{DESTDIR} | |
2643 | need not exist yet; it will be created if necessary. | |
2644 | ||
2645 | There is a subtle point with tooldirs and @code{DESTDIR}: | |
2646 | If you relocate a cross-compiler installation with | |
2647 | e.g.@: @samp{DESTDIR=@var{rootdir}}, then the directory | |
2648 | @file{@var{rootdir}/@var{exec-prefix}/@var{target-alias}/bin} will | |
2649 | be filled with duplicated GCC executables only if it already exists, | |
2650 | it will not be created otherwise. This is regarded as a feature, | |
2651 | not as a bug, because it gives slightly more control to the packagers | |
2652 | using the @code{DESTDIR} feature. | |
2653 | ||
cc11cc9b | 2654 | If you are bootstrapping a released version of GCC then please |
f97a5bda JJ |
2655 | quickly review the build status page for your release, available from |
2656 | @uref{http://gcc.gnu.org/buildstat.html}. | |
c5997381 JJ |
2657 | If your system is not listed for the version of GCC that you built, |
2658 | send a note to | |
eea81d3e | 2659 | @email{gcc@@gcc.gnu.org} indicating |
8a36672b | 2660 | that you successfully built and installed GCC@. |
c5997381 | 2661 | Include the following information: |
f42974dc | 2662 | |
c5997381 JJ |
2663 | @itemize @bullet |
2664 | @item | |
962e6e00 | 2665 | Output from running @file{@var{srcdir}/config.guess}. Do not send |
c5997381 JJ |
2666 | that file itself, just the one-line output from running it. |
2667 | ||
2668 | @item | |
2dd76960 | 2669 | The output of @samp{gcc -v} for your newly installed @command{gcc}. |
c5997381 JJ |
2670 | This tells us which version of GCC you built and the options you passed to |
2671 | configure. | |
2672 | ||
2b46bc67 JJ |
2673 | @item |
2674 | Whether you enabled all languages or a subset of them. If you used a | |
2675 | full distribution then this information is part of the configure | |
2676 | options in the output of @samp{gcc -v}, but if you downloaded the | |
2677 | ``core'' compiler plus additional front ends then it isn't apparent | |
2678 | which ones you built unless you tell us about it. | |
2679 | ||
c5997381 JJ |
2680 | @item |
2681 | If the build was for GNU/Linux, also include: | |
2682 | @itemize @bullet | |
2683 | @item | |
2684 | The distribution name and version (e.g., Red Hat 7.1 or Debian 2.2.3); | |
2685 | this information should be available from @file{/etc/issue}. | |
2686 | ||
2687 | @item | |
2688 | The version of the Linux kernel, available from @samp{uname --version} | |
2689 | or @samp{uname -a}. | |
2690 | ||
2691 | @item | |
2692 | The version of glibc you used; for RPM-based systems like Red Hat, | |
b9da07da JJ |
2693 | Mandrake, and SuSE type @samp{rpm -q glibc} to get the glibc version, |
2694 | and on systems like Debian and Progeny use @samp{dpkg -l libc6}. | |
c5997381 JJ |
2695 | @end itemize |
2696 | For other systems, you can include similar information if you think it is | |
2697 | relevant. | |
2698 | ||
2699 | @item | |
2700 | Any other information that you think would be useful to people building | |
2701 | GCC on the same configuration. The new entry in the build status list | |
2702 | will include a link to the archived copy of your message. | |
2703 | @end itemize | |
c009f01f JJ |
2704 | |
2705 | We'd also like to know if the | |
2706 | @ifnothtml | |
2707 | @ref{Specific, host/target specific installation notes} | |
2708 | @end ifnothtml | |
2709 | @ifhtml | |
2710 | @uref{specific.html,,host/target specific installation notes} | |
2711 | @end ifhtml | |
2712 | didn't include your host/target information or if that information is | |
2713 | incomplete or out of date. Send a note to | |
962e6e00 | 2714 | @email{gcc@@gcc.gnu.org} detailing how the information should be changed. |
f42974dc | 2715 | |
962e6e00 | 2716 | If you find a bug, please report it following the |
c08766bc | 2717 | @uref{../bugs/,,bug reporting guidelines}. |
f42974dc | 2718 | |
ab130aa5 | 2719 | If you want to print the GCC manuals, do @samp{cd @var{objdir}; make |
7326a39e | 2720 | dvi}. You will need to have @command{texi2dvi} (version at least 4.7) |
ab130aa5 JM |
2721 | and @TeX{} installed. This creates a number of @file{.dvi} files in |
2722 | subdirectories of @file{@var{objdir}}; these may be converted for | |
cc5c2741 BM |
2723 | printing with programs such as @command{dvips}. Alternately, by using |
2724 | @samp{make pdf} in place of @samp{make dvi}, you can create documentation | |
2725 | in the form of @file{.pdf} files; this requires @command{texi2pdf}, which | |
2726 | is included with Texinfo version 4.8 and later. You can also | |
c4331d93 | 2727 | @uref{http://shop.fsf.org/,,buy printed manuals from the |
ab130aa5 | 2728 | Free Software Foundation}, though such manuals may not be for the most |
161d7b59 | 2729 | recent version of GCC@. |
ab130aa5 | 2730 | |
9d65c5cb | 2731 | If you would like to generate online HTML documentation, do @samp{cd |
f995c51f JW |
2732 | @var{objdir}; make html} and HTML will be generated for the gcc manuals in |
2733 | @file{@var{objdir}/gcc/HTML}. | |
9d65c5cb | 2734 | |
f42974dc | 2735 | @html |
b8db17af | 2736 | <hr /> |
f42974dc DW |
2737 | <p> |
2738 | @end html | |
2739 | @ifhtml | |
2740 | @uref{./index.html,,Return to the GCC Installation page} | |
2741 | @end ifhtml | |
2742 | @end ifset | |
2743 | ||
2744 | @c ***Binaries**************************************************************** | |
6cfb3f16 | 2745 | @ifnothtml |
f42974dc DW |
2746 | @comment node-name, next, previous, up |
2747 | @node Binaries, Specific, Installing GCC, Top | |
6cfb3f16 | 2748 | @end ifnothtml |
f42974dc | 2749 | @ifset binarieshtml |
f42974dc DW |
2750 | @ifnothtml |
2751 | @chapter Installing GCC: Binaries | |
2752 | @end ifnothtml | |
2753 | @cindex Binaries | |
2754 | @cindex Installing GCC: Binaries | |
2755 | ||
161d7b59 | 2756 | We are often asked about pre-compiled versions of GCC@. While we cannot |
f42974dc DW |
2757 | provide these for all platforms, below you'll find links to binaries for |
2758 | various platforms where creating them by yourself is not easy due to various | |
2759 | reasons. | |
2760 | ||
2761 | Please note that we did not create these binaries, nor do we | |
2762 | support them. If you have any problems installing them, please | |
2763 | contact their makers. | |
2764 | ||
2765 | @itemize | |
2766 | @item | |
df002c7d DE |
2767 | AIX: |
2768 | @itemize | |
2769 | @item | |
ff4c5e7b | 2770 | @uref{http://www.bullfreeware.com,,Bull's Freeware and Shareware Archive for AIX}; |
df002c7d DE |
2771 | |
2772 | @item | |
f3e240e2 | 2773 | @uref{http://pware.hvcc.edu,,Hudson Valley Community College Open Source Software for IBM System p}; |
75dd1ae2 DE |
2774 | |
2775 | @item | |
8ff51917 | 2776 | @uref{http://www.perzl.org/aix/,,AIX 5L and 6 Open Source Packages}. |
df002c7d | 2777 | @end itemize |
f42974dc DW |
2778 | |
2779 | @item | |
8d5362b7 GP |
2780 | DOS---@uref{http://www.delorie.com/djgpp/,,DJGPP}. |
2781 | ||
2782 | @item | |
71c6b994 KH |
2783 | Renesas H8/300[HS]---@uref{http://h8300-hms.sourceforge.net/,,GNU |
2784 | Development Tools for the Renesas H8/300[HS] Series}. | |
f42974dc | 2785 | |
f404402c MW |
2786 | @item |
2787 | HP-UX: | |
2788 | @itemize | |
f42974dc | 2789 | @item |
1d7887ca | 2790 | @uref{http://hpux.cs.utah.edu/,,HP-UX Porting Center}; |
f42974dc | 2791 | |
f404402c MW |
2792 | @item |
2793 | @uref{ftp://sunsite.informatik.rwth-aachen.de/pub/packages/gcc_hpux/,,Binaries for HP-UX 11.00 at Aachen University of Technology}. | |
2794 | @end itemize | |
2795 | ||
3e35d143 SC |
2796 | @item |
2797 | Motorola 68HC11/68HC12---@uref{http://www.gnu-m68hc11.org,,GNU | |
2798 | Development Tools for the Motorola 68HC11/68HC12}. | |
2799 | ||
f42974dc | 2800 | @item |
38209993 | 2801 | @uref{http://www.sco.com/skunkware/devtools/index.html#gcc,,SCO |
8d5362b7 | 2802 | OpenServer/Unixware}. |
f42974dc | 2803 | |
8d5362b7 GP |
2804 | @item |
2805 | Solaris 2 (SPARC, Intel)---@uref{http://www.sunfreeware.com/,,Sunfreeware}. | |
f42974dc DW |
2806 | |
2807 | @item | |
8d5362b7 | 2808 | SGI---@uref{http://freeware.sgi.com/,,SGI Freeware}. |
f42974dc DW |
2809 | |
2810 | @item | |
05c425a9 | 2811 | Microsoft Windows: |
f42974dc DW |
2812 | @itemize |
2813 | @item | |
4eb3e795 | 2814 | The @uref{http://sourceware.org/cygwin/,,Cygwin} project; |
f42974dc | 2815 | @item |
cc92b8ab | 2816 | The @uref{http://www.mingw.org/,,MinGW} project. |
f42974dc DW |
2817 | @end itemize |
2818 | ||
2819 | @item | |
616de62f GP |
2820 | @uref{ftp://ftp.thewrittenword.com/packages/by-name/,,The |
2821 | Written Word} offers binaries for | |
75dd1ae2 | 2822 | AIX 4.3.3, 5.1 and 5.2, |
616de62f | 2823 | IRIX 6.5, |
75dd1ae2 | 2824 | Tru64 UNIX 4.0D and 5.1, |
616de62f GP |
2825 | GNU/Linux (i386), |
2826 | HP-UX 10.20, 11.00, and 11.11, and | |
75dd1ae2 | 2827 | Solaris/SPARC 2.5.1, 2.6, 7, 8, 9 and 10. |
6512c54a GP |
2828 | |
2829 | @item | |
2830 | @uref{http://www.openpkg.org/,,OpenPKG} offers binaries for quite a | |
2831 | number of platforms. | |
eae50c87 PB |
2832 | |
2833 | @item | |
2834 | The @uref{http://gcc.gnu.org/wiki/GFortranBinaries,,GFortran Wiki} has | |
92922512 | 2835 | links to GNU Fortran binaries for several platforms. |
f42974dc DW |
2836 | @end itemize |
2837 | ||
f42974dc | 2838 | @html |
b8db17af | 2839 | <hr /> |
f42974dc DW |
2840 | <p> |
2841 | @end html | |
2842 | @ifhtml | |
2843 | @uref{./index.html,,Return to the GCC Installation page} | |
2844 | @end ifhtml | |
2845 | @end ifset | |
2846 | ||
2847 | @c ***Specific**************************************************************** | |
6cfb3f16 | 2848 | @ifnothtml |
f42974dc | 2849 | @comment node-name, next, previous, up |
73e2155a | 2850 | @node Specific, Old, Binaries, Top |
6cfb3f16 | 2851 | @end ifnothtml |
f42974dc | 2852 | @ifset specifichtml |
f42974dc DW |
2853 | @ifnothtml |
2854 | @chapter Host/target specific installation notes for GCC | |
2855 | @end ifnothtml | |
2856 | @cindex Specific | |
2857 | @cindex Specific installation notes | |
2858 | @cindex Target specific installation | |
2859 | @cindex Host specific installation | |
2860 | @cindex Target specific installation notes | |
2861 | ||
2862 | Please read this document carefully @emph{before} installing the | |
2863 | GNU Compiler Collection on your machine. | |
2864 | ||
c9936427 DD |
2865 | Note that this list of install notes is @emph{not} a list of supported |
2866 | hosts or targets. Not all supported hosts and targets are listed | |
2867 | here, only the ones that require host-specific or target-specific | |
2868 | information are. | |
2869 | ||
ef88b07d | 2870 | @ifhtml |
f42974dc DW |
2871 | @itemize |
2872 | @item | |
5a4c9b10 | 2873 | @uref{#alpha-x-x,,alpha*-*-*} |
f42974dc | 2874 | @item |
8c200350 | 2875 | @uref{#alpha-dec-osf51,,alpha*-dec-osf5.1} |
f42974dc | 2876 | @item |
5a4c9b10 | 2877 | @uref{#arc-x-elf,,arc-*-elf} |
b8df899a | 2878 | @item |
5a4c9b10 | 2879 | @uref{#arm-x-elf,,arm-*-elf} |
b8df899a | 2880 | @item |
f42974dc DW |
2881 | @uref{#avr,,avr} |
2882 | @item | |
0d4a78eb BS |
2883 | @uref{#bfin,,Blackfin} |
2884 | @item | |
f42974dc DW |
2885 | @uref{#dos,,DOS} |
2886 | @item | |
5a4c9b10 | 2887 | @uref{#x-x-freebsd,,*-*-freebsd*} |
021c4bfd | 2888 | @item |
f42974dc DW |
2889 | @uref{#h8300-hms,,h8300-hms} |
2890 | @item | |
5a4c9b10 | 2891 | @uref{#hppa-hp-hpux,,hppa*-hp-hpux*} |
f42974dc | 2892 | @item |
5a4c9b10 | 2893 | @uref{#hppa-hp-hpux10,,hppa*-hp-hpux10} |
f42974dc | 2894 | @item |
5a4c9b10 | 2895 | @uref{#hppa-hp-hpux11,,hppa*-hp-hpux11} |
f42974dc | 2896 | @item |
5a4c9b10 | 2897 | @uref{#x-x-linux-gnu,,*-*-linux-gnu} |
f42974dc | 2898 | @item |
5a4c9b10 | 2899 | @uref{#ix86-x-linux,,i?86-*-linux*} |
f42974dc | 2900 | @item |
ae6a0535 RO |
2901 | @uref{#ix86-x-solaris289,,i?86-*-solaris2.[89]} |
2902 | @item | |
d8fcd085 | 2903 | @uref{#ix86-x-solaris210,,i?86-*-solaris2.10} |
8f47c084 | 2904 | @item |
5a4c9b10 | 2905 | @uref{#ia64-x-linux,,ia64-*-linux} |
b8df899a | 2906 | @item |
5a4c9b10 | 2907 | @uref{#ia64-x-hpux,,ia64-*-hpux*} |
b499d9ab | 2908 | @item |
5a4c9b10 | 2909 | @uref{#x-ibm-aix,,*-ibm-aix*} |
959a73a4 | 2910 | @item |
5a4c9b10 | 2911 | @uref{#iq2000-x-elf,,iq2000-*-elf} |
e3223ea2 | 2912 | @item |
aa4945c1 JB |
2913 | @uref{#lm32-x-elf,,lm32-*-elf} |
2914 | @item | |
2915 | @uref{#lm32-x-uclinux,,lm32-*-uclinux} | |
2916 | @item | |
38b2d076 DD |
2917 | @uref{#m32c-x-elf,,m32c-*-elf} |
2918 | @item | |
5a4c9b10 | 2919 | @uref{#m32r-x-elf,,m32r-*-elf} |
b8df899a | 2920 | @item |
b8df899a JM |
2921 | @uref{#m6811-elf,,m6811-elf} |
2922 | @item | |
2923 | @uref{#m6812-elf,,m6812-elf} | |
2924 | @item | |
183dc04b RS |
2925 | @uref{#m68k-x-x,,m68k-*-*} |
2926 | @item | |
4529dbf1 RS |
2927 | @uref{#m68k-uclinux,,m68k-uclinux} |
2928 | @item | |
e2491744 DD |
2929 | @uref{#mep-x-elf,,mep-*-elf} |
2930 | @item | |
5a4c9b10 | 2931 | @uref{#mips-x-x,,mips-*-*} |
b8df899a | 2932 | @item |
b953cc4b | 2933 | @uref{#mips-sgi-irix5,,mips-sgi-irix5} |
f42974dc | 2934 | @item |
b953cc4b | 2935 | @uref{#mips-sgi-irix6,,mips-sgi-irix6} |
f42974dc | 2936 | @item |
cd985f66 | 2937 | @uref{#powerpc-x-x,,powerpc*-*-*} |
4f2b1139 | 2938 | @item |
5a4c9b10 | 2939 | @uref{#powerpc-x-darwin,,powerpc-*-darwin*} |
b8df899a | 2940 | @item |
cd985f66 | 2941 | @uref{#powerpc-x-elf,,powerpc-*-elf} |
f42974dc | 2942 | @item |
5a4c9b10 | 2943 | @uref{#powerpc-x-linux-gnu,,powerpc*-*-linux-gnu*} |
edf1b3f3 | 2944 | @item |
5a4c9b10 | 2945 | @uref{#powerpc-x-netbsd,,powerpc-*-netbsd*} |
b8df899a | 2946 | @item |
5a4c9b10 | 2947 | @uref{#powerpc-x-eabisim,,powerpc-*-eabisim} |
b8df899a | 2948 | @item |
5a4c9b10 | 2949 | @uref{#powerpc-x-eabi,,powerpc-*-eabi} |
b8df899a | 2950 | @item |
cd985f66 | 2951 | @uref{#powerpcle-x-elf,,powerpcle-*-elf} |
b8df899a | 2952 | @item |
5a4c9b10 | 2953 | @uref{#powerpcle-x-eabisim,,powerpcle-*-eabisim} |
b8df899a | 2954 | @item |
5a4c9b10 | 2955 | @uref{#powerpcle-x-eabi,,powerpcle-*-eabi} |
b8df899a | 2956 | @item |
5a4c9b10 | 2957 | @uref{#s390-x-linux,,s390-*-linux*} |
91abf72d | 2958 | @item |
5a4c9b10 | 2959 | @uref{#s390x-x-linux,,s390x-*-linux*} |
91abf72d | 2960 | @item |
5a4c9b10 | 2961 | @uref{#s390x-ibm-tpf,,s390x-ibm-tpf*} |
8bf06993 | 2962 | @item |
5a4c9b10 | 2963 | @uref{#x-x-solaris2,,*-*-solaris2*} |
f42974dc | 2964 | @item |
d191cd06 EB |
2965 | @uref{#sparc-x-x,,sparc*-*-*} |
2966 | @item | |
5a4c9b10 | 2967 | @uref{#sparc-sun-solaris2,,sparc-sun-solaris2*} |
f42974dc | 2968 | @item |
cb717ac4 RO |
2969 | @uref{#sparc-sun-solaris210,,sparc-sun-solaris2.10} |
2970 | @item | |
5a4c9b10 | 2971 | @uref{#sparc-x-linux,,sparc-*-linux*} |
c6fa9728 | 2972 | @item |
5a4c9b10 | 2973 | @uref{#sparc64-x-solaris2,,sparc64-*-solaris2*} |
f42974dc | 2974 | @item |
5a4c9b10 | 2975 | @uref{#sparcv9-x-solaris2,,sparcv9-*-solaris2*} |
e403b4bc | 2976 | @item |
5a4c9b10 | 2977 | @uref{#x-x-vxworks,,*-*-vxworks*} |
4977bab6 | 2978 | @item |
d8fcd085 | 2979 | @uref{#x86-64-x-x,,x86_64-*-*, amd64-*-*} |
7e081a0c | 2980 | @item |
6d656178 | 2981 | @uref{#xtensa-x-elf,,xtensa*-*-elf} |
fd29f6ea | 2982 | @item |
6d656178 | 2983 | @uref{#xtensa-x-linux,,xtensa*-*-linux*} |
fd29f6ea | 2984 | @item |
f42974dc DW |
2985 | @uref{#windows,,Microsoft Windows} |
2986 | @item | |
aad416fb AL |
2987 | @uref{#x-x-cygwin,,*-*-cygwin} |
2988 | @item | |
2989 | @uref{#x-x-interix,,*-*-interix} | |
2990 | @item | |
53e350d3 | 2991 | @uref{#x-x-mingw32,,*-*-mingw32} |
aad416fb | 2992 | @item |
f42974dc DW |
2993 | @uref{#os2,,OS/2} |
2994 | @item | |
2995 | @uref{#older,,Older systems} | |
2996 | @end itemize | |
2997 | ||
2998 | @itemize | |
2999 | @item | |
d8fcd085 | 3000 | @uref{#elf,,all ELF targets} (SVR4, Solaris 2, etc.) |
f42974dc | 3001 | @end itemize |
ef88b07d | 3002 | @end ifhtml |
f42974dc DW |
3003 | |
3004 | ||
3005 | @html | |
3006 | <!-- -------- host/target specific issues start here ---------------- --> | |
b8db17af | 3007 | <hr /> |
f42974dc | 3008 | @end html |
5a4c9b10 | 3009 | @heading @anchor{alpha-x-x}alpha*-*-* |
333e14b0 LR |
3010 | |
3011 | This section contains general configuration information for all | |
3012 | alpha-based platforms using ELF (in particular, ignore this section for | |
161d7b59 | 3013 | DEC OSF/1, Digital UNIX and Tru64 UNIX)@. In addition to reading this |
f2541106 | 3014 | section, please read all other sections that match your target. |
333e14b0 | 3015 | |
021c4bfd RO |
3016 | We require binutils 2.11.2 or newer. |
3017 | Previous binutils releases had a number of problems with DWARF 2 | |
333e14b0 LR |
3018 | debugging information, not the least of which is incorrect linking of |
3019 | shared libraries. | |
3020 | ||
b8df899a | 3021 | @html |
b8db17af | 3022 | <hr /> |
b8df899a | 3023 | @end html |
8c200350 | 3024 | @heading @anchor{alpha-dec-osf51}alpha*-dec-osf5.1 |
b8df899a | 3025 | Systems using processors that implement the DEC Alpha architecture and |
92d80770 | 3026 | are running the DEC/Compaq/HP Unix (DEC OSF/1, Digital UNIX, or Compaq/HP |
f2541106 RO |
3027 | Tru64 UNIX) operating system, for example the DEC Alpha AXP systems. |
3028 | ||
c7bdf0a6 ZW |
3029 | As of GCC 3.2, versions before @code{alpha*-dec-osf4} are no longer |
3030 | supported. (These are the versions which identify themselves as DEC | |
8c200350 RO |
3031 | OSF/1.) As of GCC 4.6, support for Tru64 UNIX V4.0 and V5.0 has been |
3032 | removed. | |
9340544b | 3033 | |
92d80770 RO |
3034 | On Tru64 UNIX, virtual memory exhausted bootstrap failures |
3035 | may be fixed by reconfiguring Kernel Virtual Memory and Swap parameters | |
6e92b3a1 RB |
3036 | per the @command{/usr/sbin/sys_check} Tuning Suggestions, |
3037 | or applying the patch in | |
92d80770 RO |
3038 | @uref{http://gcc.gnu.org/ml/gcc/2002-08/msg00822.html}. Depending on |
3039 | the OS version used, you need a data segment size between 512 MB and | |
3040 | 1 GB, so simply use @command{ulimit -Sd unlimited}. | |
6e92b3a1 | 3041 | |
92d80770 | 3042 | As of GNU binutils 2.20.1, neither GNU @command{as} nor GNU @command{ld} |
b953cc4b RO |
3043 | are supported on Tru64 UNIX, so you must not configure GCC with |
3044 | @option{--with-gnu-as} or @option{--with-gnu-ld}. | |
3045 | ||
f0523f02 | 3046 | GCC writes a @samp{.verstamp} directive to the assembler output file |
b8df899a JM |
3047 | unless it is built as a cross-compiler. It gets the version to use from |
3048 | the system header file @file{/usr/include/stamp.h}. If you install a | |
92d80770 | 3049 | new version of Tru64 UNIX, you should rebuild GCC to pick up the new version |
b8df899a JM |
3050 | stamp. |
3051 | ||
f0523f02 | 3052 | GCC now supports both the native (ECOFF) debugging format used by DBX |
161d7b59 | 3053 | and GDB and an encapsulated STABS format for use only with GDB@. See the |
6cfb3f16 | 3054 | discussion of the @option{--with-stabs} option of @file{configure} above |
b8df899a | 3055 | for more information on these formats and how to select them. |
92d80770 | 3056 | @c FIXME: does this work at all? If so, perhaps make default. |
b8df899a JM |
3057 | |
3058 | There is a bug in DEC's assembler that produces incorrect line numbers | |
3059 | for ECOFF format when the @samp{.align} directive is used. To work | |
f0523f02 | 3060 | around this problem, GCC will not emit such alignment directives |
b8df899a JM |
3061 | while writing ECOFF format debugging information even if optimization is |
3062 | being performed. Unfortunately, this has the very undesirable | |
6cfb3f16 JM |
3063 | side-effect that code addresses when @option{-O} is specified are |
3064 | different depending on whether or not @option{-g} is also specified. | |
b8df899a | 3065 | |
6cfb3f16 | 3066 | To avoid this behavior, specify @option{-gstabs+} and use GDB instead of |
161d7b59 | 3067 | DBX@. DEC is now aware of this problem with the assembler and hopes to |
b8df899a JM |
3068 | provide a fix shortly. |
3069 | ||
92d80770 RO |
3070 | @c FIXME: still applicable? |
3071 | ||
b8df899a | 3072 | @html |
b8db17af | 3073 | <hr /> |
b8df899a | 3074 | @end html |
5a4c9b10 | 3075 | @heading @anchor{arc-x-elf}arc-*-elf |
b8df899a JM |
3076 | Argonaut ARC processor. |
3077 | This configuration is intended for embedded systems. | |
3078 | ||
3079 | @html | |
b8db17af | 3080 | <hr /> |
b8df899a | 3081 | @end html |
5a4c9b10 | 3082 | @heading @anchor{arm-x-elf}arm-*-elf |
34e8290f NC |
3083 | ARM-family processors. Subtargets that use the ELF object format |
3084 | require GNU binutils 2.13 or newer. Such subtargets include: | |
cd985f66 JM |
3085 | @code{arm-*-freebsd}, @code{arm-*-netbsdelf}, @code{arm-*-*linux} |
3086 | and @code{arm-*-rtems}. | |
34e8290f | 3087 | |
f42974dc | 3088 | @html |
b8db17af | 3089 | <hr /> |
f42974dc | 3090 | @end html |
ef88b07d | 3091 | @heading @anchor{avr}avr |
f42974dc | 3092 | |
b8df899a | 3093 | ATMEL AVR-family micro controllers. These are used in embedded |
ca52d046 GP |
3094 | applications. There are no standard Unix configurations. |
3095 | @ifnothtml | |
7f970b70 | 3096 | @xref{AVR Options,, AVR Options, gcc, Using the GNU Compiler |
ca52d046 GP |
3097 | Collection (GCC)}, |
3098 | @end ifnothtml | |
98999d8b | 3099 | @ifhtml |
ca52d046 | 3100 | See ``AVR Options'' in the main manual |
98999d8b | 3101 | @end ifhtml |
ca52d046 | 3102 | for the list of supported MCU types. |
b8df899a | 3103 | |
161d7b59 | 3104 | Use @samp{configure --target=avr --enable-languages="c"} to configure GCC@. |
f42974dc DW |
3105 | |
3106 | Further installation notes and other useful information about AVR tools | |
3107 | can also be obtained from: | |
3108 | ||
3109 | @itemize @bullet | |
3110 | @item | |
1d7887ca | 3111 | @uref{http://www.nongnu.org/avr/,,http://www.nongnu.org/avr/} |
de7999ba | 3112 | @item |
d1a86812 | 3113 | @uref{http://www.amelek.gda.pl/avr/,,http://www.amelek.gda.pl/avr/} |
f42974dc DW |
3114 | @end itemize |
3115 | ||
de7999ba | 3116 | We @emph{strongly} recommend using binutils 2.13 or newer. |
f42974dc DW |
3117 | |
3118 | The following error: | |
3ab51846 | 3119 | @smallexample |
f42974dc | 3120 | Error: register required |
3ab51846 | 3121 | @end smallexample |
f42974dc DW |
3122 | |
3123 | indicates that you should upgrade to a newer version of the binutils. | |
3124 | ||
0d4a78eb BS |
3125 | @html |
3126 | <hr /> | |
3127 | @end html | |
3128 | @heading @anchor{bfin}Blackfin | |
3129 | ||
3130 | The Blackfin processor, an Analog Devices DSP. | |
3131 | @ifnothtml | |
7f970b70 AM |
3132 | @xref{Blackfin Options,, Blackfin Options, gcc, Using the GNU Compiler |
3133 | Collection (GCC)}, | |
0d4a78eb BS |
3134 | @end ifnothtml |
3135 | @ifhtml | |
3136 | See ``Blackfin Options'' in the main manual | |
3137 | @end ifhtml | |
3138 | ||
3139 | More information, and a version of binutils with support for this processor, | |
3140 | is available at @uref{http://blackfin.uclinux.org} | |
3141 | ||
0b85d816 | 3142 | @html |
b8db17af | 3143 | <hr /> |
0b85d816 HPN |
3144 | @end html |
3145 | @heading @anchor{cris}CRIS | |
3146 | ||
3147 | CRIS is the CPU architecture in Axis Communications ETRAX system-on-a-chip | |
3148 | series. These are used in embedded applications. | |
3149 | ||
3150 | @ifnothtml | |
7f970b70 | 3151 | @xref{CRIS Options,, CRIS Options, gcc, Using the GNU Compiler |
0b85d816 HPN |
3152 | Collection (GCC)}, |
3153 | @end ifnothtml | |
3154 | @ifhtml | |
3155 | See ``CRIS Options'' in the main manual | |
3156 | @end ifhtml | |
3157 | for a list of CRIS-specific options. | |
3158 | ||
3159 | There are a few different CRIS targets: | |
3160 | @table @code | |
0b85d816 HPN |
3161 | @item cris-axis-elf |
3162 | Mainly for monolithic embedded systems. Includes a multilib for the | |
3163 | @samp{v10} core used in @samp{ETRAX 100 LX}. | |
3164 | @item cris-axis-linux-gnu | |
3165 | A GNU/Linux port for the CRIS architecture, currently targeting | |
3166 | @samp{ETRAX 100 LX} by default. | |
3167 | @end table | |
3168 | ||
cd985f66 | 3169 | For @code{cris-axis-elf} you need binutils 2.11 |
0b85d816 HPN |
3170 | or newer. For @code{cris-axis-linux-gnu} you need binutils 2.12 or newer. |
3171 | ||
3172 | Pre-packaged tools can be obtained from | |
3173 | @uref{ftp://ftp.axis.com/pub/axis/tools/cris/compiler-kit/}. More | |
3174 | information about this platform is available at | |
3175 | @uref{http://developer.axis.com/}. | |
3176 | ||
53054e77 PW |
3177 | @html |
3178 | <hr /> | |
3179 | @end html | |
3180 | @heading @anchor{crx}CRX | |
3181 | ||
3182 | The CRX CompactRISC architecture is a low-power 32-bit architecture with | |
3183 | fast context switching and architectural extensibility features. | |
3184 | ||
3185 | @ifnothtml | |
3186 | @xref{CRX Options,, CRX Options, gcc, Using and Porting the GNU Compiler | |
3187 | Collection (GCC)}, | |
3188 | @end ifnothtml | |
3189 | ||
3190 | @ifhtml | |
3191 | See ``CRX Options'' in the main manual for a list of CRX-specific options. | |
3192 | @end ifhtml | |
3193 | ||
3194 | Use @samp{configure --target=crx-elf --enable-languages=c,c++} to configure | |
3195 | GCC@ for building a CRX cross-compiler. The option @samp{--target=crx-elf} | |
3196 | is also used to build the @samp{newlib} C library for CRX. | |
3197 | ||
3198 | It is also possible to build libstdc++-v3 for the CRX architecture. This | |
a4d05547 | 3199 | needs to be done in a separate step with the following configure settings: |
53054e77 PW |
3200 | @samp{gcc/libstdc++-v3/configure --host=crx-elf --with-newlib |
3201 | --enable-sjlj-exceptions --enable-cxx-flags='-fexceptions -frtti'} | |
3202 | ||
f42974dc | 3203 | @html |
b8db17af | 3204 | <hr /> |
f42974dc | 3205 | @end html |
ef88b07d | 3206 | @heading @anchor{dos}DOS |
f42974dc | 3207 | |
962e6e00 | 3208 | Please have a look at the @uref{binaries.html,,binaries page}. |
f42974dc | 3209 | |
f0523f02 | 3210 | You cannot install GCC by itself on MSDOS; it will not compile under |
f85b8d1a JM |
3211 | any MSDOS compiler except itself. You need to get the complete |
3212 | compilation package DJGPP, which includes binaries as well as sources, | |
3213 | and includes all the necessary compilation tools and libraries. | |
3214 | ||
021c4bfd | 3215 | @html |
b8db17af | 3216 | <hr /> |
021c4bfd | 3217 | @end html |
5a4c9b10 | 3218 | @heading @anchor{x-x-freebsd}*-*-freebsd* |
021c4bfd | 3219 | |
02c8b4f8 LR |
3220 | Support for FreeBSD 1 was discontinued in GCC 3.2. Support for |
3221 | FreeBSD 2 (and any mutant a.out variants of FreeBSD 3) was | |
3222 | discontinued in GCC 4.0. | |
3223 | ||
aac91b74 GP |
3224 | In order to better utilize FreeBSD base system functionality and match |
3225 | the configuration of the system compiler, GCC 4.5 and above as well as | |
3226 | GCC 4.4 past 2010-06-20 leverage SSP support in libc (which is present | |
3227 | on FreeBSD 7 or later) and the use of @code{__cxa_atexit} by default | |
3228 | (on FreeBSD 6 or later). The use of @code{dl_iterate_phdr} inside | |
3229 | @file{libgcc_s.so.1} and boehm-gc (on FreeBSD 7 or later) is enabled | |
3230 | by GCC 4.5 and above. | |
27ed7478 | 3231 | |
02c8b4f8 LR |
3232 | We support FreeBSD using the ELF file format with DWARF 2 debugging |
3233 | for all CPU architectures. You may use @option{-gstabs} instead of | |
3234 | @option{-g}, if you really want the old debugging format. There are | |
021c4bfd | 3235 | no known issues with mixing object files and libraries with different |
02c8b4f8 LR |
3236 | debugging formats. Otherwise, this release of GCC should now match |
3237 | more of the configuration used in the stock FreeBSD configuration of | |
3238 | GCC@. In particular, @option{--enable-threads} is now configured by | |
3239 | default. However, as a general user, do not attempt to replace the | |
3240 | system compiler with this release. Known to bootstrap and check with | |
3241 | good results on FreeBSD 7.2-STABLE@. In the past, known to bootstrap | |
3242 | and check with good results on FreeBSD 3.0, 3.4, 4.0, 4.2, 4.3, 4.4, | |
3243 | 4.5, 4.8, 4.9 and 5-CURRENT@. | |
3244 | ||
3245 | The version of binutils installed in @file{/usr/bin} probably works | |
3246 | with this release of GCC@. Bootstrapping against the latest GNU | |
f2431d5d | 3247 | binutils and/or the version found in @file{/usr/ports/devel/binutils} has |
02c8b4f8 LR |
3248 | been known to enable additional features and improve overall testsuite |
3249 | results. However, it is currently known that boehm-gc (which itself | |
3250 | is required for java) may not configure properly on FreeBSD prior to | |
3251 | the FreeBSD 7.0 release with GNU binutils after 2.16.1. | |
bc3a44db | 3252 | |
f42974dc | 3253 | @html |
b8db17af | 3254 | <hr /> |
f42974dc | 3255 | @end html |
ef88b07d | 3256 | @heading @anchor{h8300-hms}h8300-hms |
71c6b994 | 3257 | Renesas H8/300 series of processors. |
f42974dc | 3258 | |
962e6e00 | 3259 | Please have a look at the @uref{binaries.html,,binaries page}. |
f42974dc | 3260 | |
b8df899a JM |
3261 | The calling convention and structure layout has changed in release 2.6. |
3262 | All code must be recompiled. The calling convention now passes the | |
3263 | first three arguments in function calls in registers. Structures are no | |
3264 | longer a multiple of 2 bytes. | |
3265 | ||
f42974dc | 3266 | @html |
b8db17af | 3267 | <hr /> |
f42974dc | 3268 | @end html |
5a4c9b10 | 3269 | @heading @anchor{hppa-hp-hpux}hppa*-hp-hpux* |
6a1dbbaf | 3270 | Support for HP-UX version 9 and older was discontinued in GCC 3.4. |
f42974dc | 3271 | |
be7659ba JDA |
3272 | We require using gas/binutils on all hppa platforms. Version 2.19 or |
3273 | later is recommended. | |
f42974dc | 3274 | |
be7659ba | 3275 | It may be helpful to configure GCC with the |
38209993 | 3276 | @uref{./configure.html#with-gnu-as,,@option{--with-gnu-as}} and |
8a36672b | 3277 | @option{--with-as=@dots{}} options to ensure that GCC can find GAS@. |
f42974dc | 3278 | |
be7659ba JDA |
3279 | The HP assembler should not be used with GCC. It is rarely tested and may |
3280 | not work. It shouldn't be used with any languages other than C due to its | |
3281 | many limitations. | |
3282 | ||
3283 | Specifically, @option{-g} does not work (HP-UX uses a peculiar debugging | |
3284 | format which GCC does not know about). It also inserts timestamps | |
3285 | into each object file it creates, causing the 3-stage comparison test to | |
3286 | fail during a bootstrap. You should be able to continue by saying | |
3287 | @samp{make all-host all-target} after getting the failure from @samp{make}. | |
3288 | ||
3289 | Various GCC features are not supported. For example, it does not support weak | |
3290 | symbols or alias definitions. As a result, explicit template instantiations | |
3291 | are required when using C++. This makes it difficult if not impossible to | |
3292 | build many C++ applications. | |
f42974dc | 3293 | |
d5355cb2 JDA |
3294 | There are two default scheduling models for instructions. These are |
3295 | PROCESSOR_7100LC and PROCESSOR_8000. They are selected from the pa-risc | |
3296 | architecture specified for the target machine when configuring. | |
3297 | PROCESSOR_8000 is the default. PROCESSOR_7100LC is selected when | |
3298 | the target is a @samp{hppa1*} machine. | |
806bf413 JDA |
3299 | |
3300 | The PROCESSOR_8000 model is not well suited to older processors. Thus, | |
3301 | it is important to completely specify the machine architecture when | |
3302 | configuring if you want a model other than PROCESSOR_8000. The macro | |
3303 | TARGET_SCHED_DEFAULT can be defined in BOOT_CFLAGS if a different | |
3304 | default scheduling model is desired. | |
3305 | ||
25f710ba | 3306 | As of GCC 4.0, GCC uses the UNIX 95 namespace for HP-UX 10.10 |
d711cf67 JDA |
3307 | through 11.00, and the UNIX 98 namespace for HP-UX 11.11 and later. |
3308 | This namespace change might cause problems when bootstrapping with | |
3309 | an earlier version of GCC or the HP compiler as essentially the same | |
3310 | namespace is required for an entire build. This problem can be avoided | |
3311 | in a number of ways. With HP cc, @env{UNIX_STD} can be set to @samp{95} | |
3312 | or @samp{98}. Another way is to add an appropriate set of predefines | |
3313 | to @env{CC}. The description for the @option{munix=} option contains | |
3314 | a list of the predefines used with each standard. | |
3315 | ||
021c4bfd | 3316 | More specific information to @samp{hppa*-hp-hpux*} targets follows. |
f42974dc | 3317 | |
f42974dc | 3318 | @html |
b8db17af | 3319 | <hr /> |
f42974dc | 3320 | @end html |
5a4c9b10 | 3321 | @heading @anchor{hppa-hp-hpux10}hppa*-hp-hpux10 |
f42974dc | 3322 | |
f9047ed3 | 3323 | For hpux10.20, we @emph{highly} recommend you pick up the latest sed patch |
161d7b59 | 3324 | @code{PHCO_19798} from HP@. HP has two sites which provide patches free of |
f42974dc DW |
3325 | charge: |
3326 | ||
3327 | @itemize @bullet | |
3328 | @item | |
3329 | @html | |
f401d0f5 | 3330 | <a href="http://us.itrc.hp.com/service/home/home.do">US, Canada, Asia-Pacific, and |
f42974dc DW |
3331 | Latin-America</a> |
3332 | @end html | |
3333 | @ifnothtml | |
f401d0f5 JDA |
3334 | @uref{http://us.itrc.hp.com/service/home/home.do,,} US, Canada, Asia-Pacific, |
3335 | and Latin-America. | |
f42974dc DW |
3336 | @end ifnothtml |
3337 | @item | |
f401d0f5 | 3338 | @uref{http://europe.itrc.hp.com/service/home/home.do,,} Europe. |
f42974dc DW |
3339 | @end itemize |
3340 | ||
25f710ba | 3341 | The C++ ABI has changed incompatibly in GCC 4.0. COMDAT subspaces are |
9a55eab3 JDA |
3342 | used for one-only code and data. This resolves many of the previous |
3343 | problems in using C++ on this target. However, the ABI is not compatible | |
3344 | with the one implemented under HP-UX 11 using secondary definitions. | |
f42974dc DW |
3345 | |
3346 | @html | |
b8db17af | 3347 | <hr /> |
f42974dc | 3348 | @end html |
5a4c9b10 | 3349 | @heading @anchor{hppa-hp-hpux11}hppa*-hp-hpux11 |
f42974dc | 3350 | |
c5124497 JDA |
3351 | GCC 3.0 and up support HP-UX 11. GCC 2.95.x is not supported and cannot |
3352 | be used to compile GCC 3.0 and up. | |
f269f54f | 3353 | |
be7659ba JDA |
3354 | The libffi and libjava libraries haven't been ported to 64-bit HP-UX@ |
3355 | and don't build. | |
3356 | ||
c5124497 | 3357 | Refer to @uref{binaries.html,,binaries} for information about obtaining |
8a36672b JM |
3358 | precompiled GCC binaries for HP-UX@. Precompiled binaries must be obtained |
3359 | to build the Ada language as it can't be bootstrapped using C@. Ada is | |
be7659ba | 3360 | only available for the 32-bit PA-RISC runtime. |
f401d0f5 | 3361 | |
02809848 PB |
3362 | Starting with GCC 3.4 an ISO C compiler is required to bootstrap. The |
3363 | bundled compiler supports only traditional C; you will need either HP's | |
3364 | unbundled compiler, or a binary distribution of GCC@. | |
3365 | ||
c5124497 JDA |
3366 | It is possible to build GCC 3.3 starting with the bundled HP compiler, |
3367 | but the process requires several steps. GCC 3.3 can then be used to | |
3368 | build later versions. The fastjar program contains ISO C code and | |
3369 | can't be built with the HP bundled compiler. This problem can be | |
3370 | avoided by not building the Java language. For example, use the | |
3371 | @option{--enable-languages="c,c++,f77,objc"} option in your configure | |
3372 | command. | |
08b3d104 | 3373 | |
c5124497 JDA |
3374 | There are several possible approaches to building the distribution. |
3375 | Binutils can be built first using the HP tools. Then, the GCC | |
3376 | distribution can be built. The second approach is to build GCC | |
8a36672b | 3377 | first using the HP tools, then build binutils, then rebuild GCC@. |
c5124497 JDA |
3378 | There have been problems with various binary distributions, so it |
3379 | is best not to start from a binary distribution. | |
3380 | ||
3381 | On 64-bit capable systems, there are two distinct targets. Different | |
3382 | installation prefixes must be used if both are to be installed on | |
3383 | the same system. The @samp{hppa[1-2]*-hp-hpux11*} target generates code | |
3384 | for the 32-bit PA-RISC runtime architecture and uses the HP linker. | |
3385 | The @samp{hppa64-hp-hpux11*} target generates 64-bit code for the | |
be7659ba | 3386 | PA-RISC 2.0 architecture. |
c5124497 JDA |
3387 | |
3388 | The script config.guess now selects the target type based on the compiler | |
3389 | detected during configuration. You must define @env{PATH} or @env{CC} so | |
3390 | that configure finds an appropriate compiler for the initial bootstrap. | |
3391 | When @env{CC} is used, the definition should contain the options that are | |
3392 | needed whenever @env{CC} is used. | |
3393 | ||
3394 | Specifically, options that determine the runtime architecture must be | |
3395 | in @env{CC} to correctly select the target for the build. It is also | |
f0eb93a8 | 3396 | convenient to place many other compiler options in @env{CC}. For example, |
c5124497 JDA |
3397 | @env{CC="cc -Ac +DA2.0W -Wp,-H16376 -D_CLASSIC_TYPES -D_HPUX_SOURCE"} |
3398 | can be used to bootstrap the GCC 3.3 branch with the HP compiler in | |
3399 | 64-bit K&R/bundled mode. The @option{+DA2.0W} option will result in | |
3400 | the automatic selection of the @samp{hppa64-hp-hpux11*} target. The | |
3401 | macro definition table of cpp needs to be increased for a successful | |
3402 | build with the HP compiler. _CLASSIC_TYPES and _HPUX_SOURCE need to | |
3403 | be defined when building with the bundled compiler, or when using the | |
3404 | @option{-Ac} option. These defines aren't necessary with @option{-Ae}. | |
8c085f6f | 3405 | |
c5124497 JDA |
3406 | It is best to explicitly configure the @samp{hppa64-hp-hpux11*} target |
3407 | with the @option{--with-ld=@dots{}} option. This overrides the standard | |
3408 | search for ld. The two linkers supported on this target require different | |
3409 | commands. The default linker is determined during configuration. As a | |
3410 | result, it's not possible to switch linkers in the middle of a GCC build. | |
d1facce0 RW |
3411 | This has been reported to sometimes occur in unified builds of binutils |
3412 | and GCC@. | |
c5124497 | 3413 | |
c5124497 JDA |
3414 | A recent linker patch must be installed for the correct operation of |
3415 | GCC 3.3 and later. @code{PHSS_26559} and @code{PHSS_24304} are the | |
3416 | oldest linker patches that are known to work. They are for HP-UX | |
3417 | 11.00 and 11.11, respectively. @code{PHSS_24303}, the companion to | |
3418 | @code{PHSS_24304}, might be usable but it hasn't been tested. These | |
3419 | patches have been superseded. Consult the HP patch database to obtain | |
3420 | the currently recommended linker patch for your system. | |
3421 | ||
3422 | The patches are necessary for the support of weak symbols on the | |
3423 | 32-bit port, and for the running of initializers and finalizers. Weak | |
3424 | symbols are implemented using SOM secondary definition symbols. Prior | |
3425 | to HP-UX 11, there are bugs in the linker support for secondary symbols. | |
3426 | The patches correct a problem of linker core dumps creating shared | |
3427 | libraries containing secondary symbols, as well as various other | |
3428 | linking issues involving secondary symbols. | |
3429 | ||
3430 | GCC 3.3 uses the ELF DT_INIT_ARRAY and DT_FINI_ARRAY capabilities to | |
3431 | run initializers and finalizers on the 64-bit port. The 32-bit port | |
3432 | uses the linker @option{+init} and @option{+fini} options for the same | |
3433 | purpose. The patches correct various problems with the +init/+fini | |
3434 | options, including program core dumps. Binutils 2.14 corrects a | |
3435 | problem on the 64-bit port resulting from HP's non-standard use of | |
3436 | the .init and .fini sections for array initializers and finalizers. | |
f401d0f5 | 3437 | |
be7659ba JDA |
3438 | Although the HP and GNU linkers are both supported for the |
3439 | @samp{hppa64-hp-hpux11*} target, it is strongly recommended that the | |
3440 | HP linker be used for link editing on this target. | |
3441 | ||
3442 | At this time, the GNU linker does not support the creation of long | |
3443 | branch stubs. As a result, it can't successfully link binaries | |
3444 | containing branch offsets larger than 8 megabytes. In addition, | |
3445 | there are problems linking shared libraries, linking executables | |
3446 | with @option{-static}, and with dwarf2 unwind and exception support. | |
3447 | It also doesn't provide stubs for internal calls to global functions | |
3448 | in shared libraries, so these calls can't be overloaded. | |
3449 | ||
3450 | The HP dynamic loader does not support GNU symbol versioning, so symbol | |
3451 | versioning is not supported. It may be necessary to disable symbol | |
3452 | versioning with @option{--disable-symvers} when using GNU ld. | |
3453 | ||
3454 | POSIX threads are the default. The optional DCE thread library is not | |
3455 | supported, so @option{--enable-threads=dce} does not work. | |
08b3d104 | 3456 | |
f42974dc | 3457 | @html |
b8db17af | 3458 | <hr /> |
f42974dc | 3459 | @end html |
5a4c9b10 | 3460 | @heading @anchor{x-x-linux-gnu}*-*-linux-gnu |
f42974dc | 3461 | |
b818de22 | 3462 | Versions of libstdc++-v3 starting with 3.2.1 require bug fixes present |
9e80ada7 PE |
3463 | in glibc 2.2.5 and later. More information is available in the |
3464 | libstdc++-v3 documentation. | |
3465 | ||
f42974dc | 3466 | @html |
b8db17af | 3467 | <hr /> |
f42974dc | 3468 | @end html |
5a4c9b10 | 3469 | @heading @anchor{ix86-x-linux}i?86-*-linux* |
f42974dc | 3470 | |
1ea6f4c8 DH |
3471 | As of GCC 3.3, binutils 2.13.1 or later is required for this platform. |
3472 | See @uref{http://gcc.gnu.org/PR10877,,bug 10877} for more information. | |
f42974dc DW |
3473 | |
3474 | If you receive Signal 11 errors when building on GNU/Linux, then it is | |
3475 | possible you have a hardware problem. Further information on this can be | |
3476 | found on @uref{http://www.bitwizard.nl/sig11/,,www.bitwizard.nl}. | |
3477 | ||
ae6a0535 RO |
3478 | @html |
3479 | <hr /> | |
3480 | @end html | |
3481 | @heading @anchor{ix86-x-solaris289}i?86-*-solaris2.[89] | |
3482 | The Sun assembler in Solaris 8 and 9 has several bugs and limitations. | |
3483 | While GCC works around them, several features are missing, so it is | |
3484 | @c FIXME: which ones? | |
3485 | recommended to use the GNU assembler instead. There is no bundled | |
3486 | version, but the current version, from GNU binutils 2.20.1, is known to | |
3487 | work. | |
3488 | ||
3489 | Solaris~2/x86 doesn't support the execution of SSE/SSE2 instructions | |
3490 | before Solaris~9 4/04, even if the CPU supports them. Programs will | |
3491 | receive @code{SIGILL} if they try. The fix is available both in | |
3492 | Solaris~9 Update~6 and kernel patch 112234-12 or newer. There is no | |
3493 | corresponding patch for Solaris 8. To avoid this problem, | |
3494 | @option{-march} defaults to @samp{pentiumpro} on Solaris 8 and 9. If | |
3495 | you have the patch installed, you can configure GCC with an appropriate | |
3496 | @option{--with-arch} option, but need GNU @command{as} for SSE2 support. | |
3497 | ||
8f47c084 JM |
3498 | @html |
3499 | <hr /> | |
3500 | @end html | |
d8fcd085 | 3501 | @heading @anchor{ix86-x-solaris210}i?86-*-solaris2.10 |
8f47c084 | 3502 | Use this for Solaris 10 or later on x86 and x86-64 systems. This |
8c5cfa89 RO |
3503 | configuration is supported by GCC 4.0 and later versions only. Unlike |
3504 | @samp{sparcv9-sun-solaris2*}, there is no corresponding 64-bit | |
3505 | configuration like @samp{amd64-*-solaris2*} or @samp{x86_64-*-solaris2*}. | |
3506 | @c FIXME: will there ever be? | |
3507 | ||
3508 | It is recommended that you configure GCC to use the GNU assembler, in | |
3509 | @file{/usr/sfw/bin/gas}. The versions included in Solaris 10, from GNU | |
3510 | binutils 2.15, and Solaris 11, from GNU binutils 2.19, work fine, | |
dd178909 | 3511 | although the current version, from GNU binutils |
8c5cfa89 RO |
3512 | 2.20.1, is known to work, too. Recent versions of the Sun assembler in |
3513 | @file{/usr/ccs/bin/as} work almost as well, though. | |
3514 | @c FIXME: as patch requirements? | |
3515 | ||
3516 | For linking, the Sun linker, is preferred. If you want to use the GNU | |
3517 | linker instead, which is available in @file{/usr/sfw/bin/gld}, note that | |
3518 | due to a packaging bug the version in Solaris 10, from GNU binutils | |
3519 | 2.15, cannot be used, while the version in Solaris 11, from GNU binutils | |
3520 | 2.19, works, as does the latest version, from GNU binutils 2.20.1. | |
3521 | ||
3522 | To use GNU @command{as}, configure with the options | |
3523 | @option{--with-gnu-as --with-as=/usr/sfw/bin/gas}. It may be necessary | |
3524 | to configure with @option{--without-gnu-ld --with-ld=/usr/ccs/bin/ld} to | |
3525 | guarantee use of Sun @command{ld}. | |
3526 | @c FIXME: why --without-gnu-ld --with-ld? | |
8f47c084 | 3527 | |
b499d9ab | 3528 | @html |
b8db17af | 3529 | <hr /> |
b499d9ab | 3530 | @end html |
5a4c9b10 | 3531 | @heading @anchor{ia64-x-linux}ia64-*-linux |
b499d9ab JJ |
3532 | IA-64 processor (also known as IPF, or Itanium Processor Family) |
3533 | running GNU/Linux. | |
3534 | ||
443728bb L |
3535 | If you are using the installed system libunwind library with |
3536 | @option{--with-system-libunwind}, then you must use libunwind 0.98 or | |
3537 | later. | |
bcd11e5e | 3538 | |
b499d9ab JJ |
3539 | None of the following versions of GCC has an ABI that is compatible |
3540 | with any of the other versions in this list, with the exception that | |
3541 | Red Hat 2.96 and Trillian 000171 are compatible with each other: | |
41ca24de | 3542 | 3.1, 3.0.2, 3.0.1, 3.0, Red Hat 2.96, and Trillian 000717. |
b499d9ab | 3543 | This primarily affects C++ programs and programs that create shared libraries. |
41ca24de DH |
3544 | GCC 3.1 or later is recommended for compiling linux, the kernel. |
3545 | As of version 3.1 GCC is believed to be fully ABI compliant, and hence no | |
3546 | more major ABI changes are expected. | |
b499d9ab | 3547 | |
959a73a4 DH |
3548 | @html |
3549 | <hr /> | |
3550 | @end html | |
5a4c9b10 | 3551 | @heading @anchor{ia64-x-hpux}ia64-*-hpux* |
8a36672b JM |
3552 | Building GCC on this target requires the GNU Assembler. The bundled HP |
3553 | assembler will not work. To prevent GCC from using the wrong assembler, | |
959a73a4 DH |
3554 | the option @option{--with-gnu-as} may be necessary. |
3555 | ||
8a36672b | 3556 | The GCC libunwind library has not been ported to HPUX@. This means that for |
959a73a4 | 3557 | GCC versions 3.2.3 and earlier, @option{--enable-libunwind-exceptions} |
8a36672b | 3558 | is required to build GCC@. For GCC 3.3 and later, this is the default. |
443728bb L |
3559 | For gcc 3.4.3 and later, @option{--enable-libunwind-exceptions} is |
3560 | removed and the system libunwind library will always be used. | |
959a73a4 | 3561 | |
f42974dc | 3562 | @html |
b8db17af | 3563 | <hr /> |
f42974dc DW |
3564 | <!-- rs6000-ibm-aix*, powerpc-ibm-aix* --> |
3565 | @end html | |
5a4c9b10 | 3566 | @heading @anchor{x-ibm-aix}*-ibm-aix* |
6a1dbbaf | 3567 | Support for AIX version 3 and older was discontinued in GCC 3.4. |
52c0e446 | 3568 | Support for AIX version 4.2 and older was discontinued in GCC 4.5. |
f42974dc | 3569 | |
7cc654b8 DE |
3570 | ``out of memory'' bootstrap failures may indicate a problem with |
3571 | process resource limits (ulimit). Hard limits are configured in the | |
71fc0c16 | 3572 | @file{/etc/security/limits} system configuration file. |
7cc654b8 | 3573 | |
c58c92f5 DE |
3574 | GCC can bootstrap with recent versions of IBM XLC, but bootstrapping |
3575 | with an earlier release of GCC is recommended. Bootstrapping with XLC | |
3576 | requires a larger data segment, which can be enabled through the | |
3577 | @var{LDR_CNTRL} environment variable, e.g., | |
3578 | ||
3579 | @smallexample | |
3580 | % LDR_CNTRL=MAXDATA=0x50000000 | |
3581 | % export LDR_CNTRL | |
3582 | @end smallexample | |
3583 | ||
3584 | One can start with a pre-compiled version of GCC to build from | |
3585 | sources. One may delete GCC's ``fixed'' header files when starting | |
3586 | with a version of GCC built for an earlier release of AIX. | |
3587 | ||
e8d8a034 DE |
3588 | To speed up the configuration phases of bootstrapping and installing GCC, |
3589 | one may use GNU Bash instead of AIX @command{/bin/sh}, e.g., | |
3590 | ||
3591 | @smallexample | |
3592 | % CONFIG_SHELL=/opt/freeware/bin/bash | |
3593 | % export CONFIG_SHELL | |
3594 | @end smallexample | |
3595 | ||
cc11cc9b PB |
3596 | and then proceed as described in @uref{build.html,,the build |
3597 | instructions}, where we strongly recommend specifying an absolute path | |
e8d8a034 DE |
3598 | to invoke @var{srcdir}/configure. |
3599 | ||
d3a95f27 DE |
3600 | Because GCC on AIX is built as a 32-bit executable by default, |
3601 | (although it can generate 64-bit programs) the GMP and MPFR libraries | |
3602 | required by gfortran must be 32-bit libraries. Building GMP and MPFR | |
3603 | as static archive libraries works better than shared libraries. | |
3604 | ||
6cfb3f16 | 3605 | Errors involving @code{alloca} when building GCC generally are due |
021c4bfd | 3606 | to an incorrect definition of @code{CC} in the Makefile or mixing files |
161d7b59 | 3607 | compiled with the native C compiler and GCC@. During the stage1 phase of |
6cfb3f16 JM |
3608 | the build, the native AIX compiler @strong{must} be invoked as @command{cc} |
3609 | (not @command{xlc}). Once @command{configure} has been informed of | |
3610 | @command{xlc}, one needs to use @samp{make distclean} to remove the | |
38209993 | 3611 | configure cache files and ensure that @env{CC} environment variable |
f42974dc DW |
3612 | does not provide a definition that will confuse @command{configure}. |
3613 | If this error occurs during stage2 or later, then the problem most likely | |
3614 | is the version of Make (see above). | |
3615 | ||
f0483418 | 3616 | The native @command{as} and @command{ld} are recommended for bootstrapping |
c58c92f5 DE |
3617 | on AIX@. The GNU Assembler, GNU Linker, and GNU Binutils version 2.20 |
3618 | is required to bootstrap on AIX 5@. The native AIX tools do | |
3619 | interoperate with GCC@. | |
df002c7d | 3620 | |
04d2be8e | 3621 | Building @file{libstdc++.a} requires a fix for an AIX Assembler bug |
bb674cef DE |
3622 | APAR IY26685 (AIX 4.3) or APAR IY25528 (AIX 5.1). It also requires a |
3623 | fix for another AIX Assembler bug and a co-dependent AIX Archiver fix | |
e4ae5e77 | 3624 | referenced as APAR IY53606 (AIX 5.2) or as APAR IY54774 (AIX 5.1) |
2705baf5 | 3625 | |
bb674cef | 3626 | @samp{libstdc++} in GCC 3.4 increments the major version number of the |
fdf68669 | 3627 | shared object and GCC installation places the @file{libstdc++.a} |
bb674cef DE |
3628 | shared library in a common location which will overwrite the and GCC |
3629 | 3.3 version of the shared library. Applications either need to be | |
3630 | re-linked against the new shared library or the GCC 3.1 and GCC 3.3 | |
3631 | versions of the @samp{libstdc++} shared object needs to be available | |
3632 | to the AIX runtime loader. The GCC 3.1 @samp{libstdc++.so.4}, if | |
3633 | present, and GCC 3.3 @samp{libstdc++.so.5} shared objects can be | |
3634 | installed for runtime dynamic loading using the following steps to set | |
3635 | the @samp{F_LOADONLY} flag in the shared object for @emph{each} | |
fdf68669 DE |
3636 | multilib @file{libstdc++.a} installed: |
3637 | ||
bb674cef DE |
3638 | Extract the shared objects from the currently installed |
3639 | @file{libstdc++.a} archive: | |
3ab51846 | 3640 | @smallexample |
bb674cef | 3641 | % ar -x libstdc++.a libstdc++.so.4 libstdc++.so.5 |
3ab51846 | 3642 | @end smallexample |
fdf68669 DE |
3643 | |
3644 | Enable the @samp{F_LOADONLY} flag so that the shared object will be | |
3645 | available for runtime dynamic loading, but not linking: | |
3ab51846 | 3646 | @smallexample |
bb674cef | 3647 | % strip -e libstdc++.so.4 libstdc++.so.5 |
3ab51846 | 3648 | @end smallexample |
fdf68669 | 3649 | |
bb674cef | 3650 | Archive the runtime-only shared object in the GCC 3.4 |
fdf68669 | 3651 | @file{libstdc++.a} archive: |
3ab51846 | 3652 | @smallexample |
bb674cef | 3653 | % ar -q libstdc++.a libstdc++.so.4 libstdc++.so.5 |
3ab51846 | 3654 | @end smallexample |
fdf68669 | 3655 | |
df002c7d DE |
3656 | Linking executables and shared libraries may produce warnings of |
3657 | duplicate symbols. The assembly files generated by GCC for AIX always | |
3658 | have included multiple symbol definitions for certain global variable | |
3659 | and function declarations in the original program. The warnings should | |
3660 | not prevent the linker from producing a correct library or runnable | |
3661 | executable. | |
3662 | ||
6cfb3f16 | 3663 | AIX 4.3 utilizes a ``large format'' archive to support both 32-bit and |
df002c7d DE |
3664 | 64-bit object modules. The routines provided in AIX 4.3.0 and AIX 4.3.1 |
3665 | to parse archive libraries did not handle the new format correctly. | |
3666 | These routines are used by GCC and result in error messages during | |
6cfb3f16 | 3667 | linking such as ``not a COFF file''. The version of the routines shipped |
df002c7d DE |
3668 | with AIX 4.3.1 should work for a 32-bit environment. The @option{-g} |
3669 | option of the archive command may be used to create archives of 32-bit | |
6cfb3f16 | 3670 | objects using the original ``small format''. A correct version of the |
d5d8d540 | 3671 | routines is shipped with AIX 4.3.2 and above. |
df002c7d | 3672 | |
f42974dc DW |
3673 | Some versions of the AIX binder (linker) can fail with a relocation |
3674 | overflow severe error when the @option{-bbigtoc} option is used to link | |
161d7b59 | 3675 | GCC-produced object files into an executable that overflows the TOC@. A fix |
f42974dc DW |
3676 | for APAR IX75823 (OVERFLOW DURING LINK WHEN USING GCC AND -BBIGTOC) is |
3677 | available from IBM Customer Support and from its | |
d5d8d540 | 3678 | @uref{http://techsupport.services.ibm.com/,,techsupport.services.ibm.com} |
f42974dc DW |
3679 | website as PTF U455193. |
3680 | ||
df002c7d | 3681 | The AIX 4.3.2.1 linker (bos.rte.bind_cmds Level 4.3.2.1) will dump core |
161d7b59 | 3682 | with a segmentation fault when invoked by any version of GCC@. A fix for |
df002c7d | 3683 | APAR IX87327 is available from IBM Customer Support and from its |
d5d8d540 | 3684 | @uref{http://techsupport.services.ibm.com/,,techsupport.services.ibm.com} |
df002c7d | 3685 | website as PTF U461879. This fix is incorporated in AIX 4.3.3 and above. |
f42974dc DW |
3686 | |
3687 | The initial assembler shipped with AIX 4.3.0 generates incorrect object | |
3688 | files. A fix for APAR IX74254 (64BIT DISASSEMBLED OUTPUT FROM COMPILER FAILS | |
3689 | TO ASSEMBLE/BIND) is available from IBM Customer Support and from its | |
d5d8d540 | 3690 | @uref{http://techsupport.services.ibm.com/,,techsupport.services.ibm.com} |
f42974dc DW |
3691 | website as PTF U453956. This fix is incorporated in AIX 4.3.1 and above. |
3692 | ||
161d7b59 | 3693 | AIX provides National Language Support (NLS)@. Compilers and assemblers |
df002c7d | 3694 | use NLS to support locale-specific representations of various data |
6cfb3f16 | 3695 | formats including floating-point numbers (e.g., @samp{.} vs @samp{,} for |
df002c7d DE |
3696 | separating decimal fractions). There have been problems reported where |
3697 | GCC does not produce the same floating-point formats that the assembler | |
c771326b | 3698 | expects. If one encounters this problem, set the @env{LANG} |
6cfb3f16 | 3699 | environment variable to @samp{C} or @samp{En_US}. |
f42974dc | 3700 | |
d5d8d540 DE |
3701 | A default can be specified with the @option{-mcpu=@var{cpu_type}} |
3702 | switch and using the configure option @option{--with-cpu-@var{cpu_type}}. | |
f42974dc | 3703 | |
6b3d1e47 SC |
3704 | @html |
3705 | <hr /> | |
3706 | @end html | |
5a4c9b10 | 3707 | @heading @anchor{iq2000-x-elf}iq2000-*-elf |
6b3d1e47 SC |
3708 | Vitesse IQ2000 processors. These are used in embedded |
3709 | applications. There are no standard Unix configurations. | |
3710 | ||
aa4945c1 JB |
3711 | @html |
3712 | <hr /> | |
3713 | @end html | |
3714 | @heading @anchor{lm32-x-elf}lm32-*-elf | |
3715 | Lattice Mico32 processor. | |
3716 | This configuration is intended for embedded systems. | |
3717 | ||
3718 | @html | |
3719 | <hr /> | |
3720 | @end html | |
3721 | @heading @anchor{lm32-x-uclinux}lm32-*-uclinux | |
3722 | Lattice Mico32 processor. | |
3723 | This configuration is intended for embedded systems running uClinux. | |
3724 | ||
38b2d076 DD |
3725 | @html |
3726 | <hr /> | |
3727 | @end html | |
3728 | @heading @anchor{m32c-x-elf}m32c-*-elf | |
3729 | Renesas M32C processor. | |
3730 | This configuration is intended for embedded systems. | |
3731 | ||
b8df899a | 3732 | @html |
b8db17af | 3733 | <hr /> |
b8df899a | 3734 | @end html |
5a4c9b10 | 3735 | @heading @anchor{m32r-x-elf}m32r-*-elf |
25f47a4c | 3736 | Renesas M32R processor. |
b8df899a JM |
3737 | This configuration is intended for embedded systems. |
3738 | ||
b8df899a | 3739 | @html |
b8db17af | 3740 | <hr /> |
b8df899a JM |
3741 | @end html |
3742 | @heading @anchor{m6811-elf}m6811-elf | |
3743 | Motorola 68HC11 family micro controllers. These are used in embedded | |
3744 | applications. There are no standard Unix configurations. | |
3745 | ||
3746 | @html | |
b8db17af | 3747 | <hr /> |
b8df899a JM |
3748 | @end html |
3749 | @heading @anchor{m6812-elf}m6812-elf | |
3750 | Motorola 68HC12 family micro controllers. These are used in embedded | |
3751 | applications. There are no standard Unix configurations. | |
3752 | ||
b8df899a | 3753 | @html |
b8db17af | 3754 | <hr /> |
b8df899a | 3755 | @end html |
183dc04b | 3756 | @heading @anchor{m68k-x-x}m68k-*-* |
52c0e446 | 3757 | By default, |
368b55f6 NS |
3758 | @samp{m68k-*-elf*}, @samp{m68k-*-rtems}, @samp{m68k-*-uclinux} and |
3759 | @samp{m68k-*-linux} | |
10e96df4 NS |
3760 | build libraries for both M680x0 and ColdFire processors. If you only |
3761 | need the M680x0 libraries, you can omit the ColdFire ones by passing | |
3762 | @option{--with-arch=m68k} to @command{configure}. Alternatively, you | |
3763 | can omit the M680x0 libraries by passing @option{--with-arch=cf} to | |
368b55f6 NS |
3764 | @command{configure}. These targets default to 5206 or 5475 code as |
3765 | appropriate for the target system when | |
10e96df4 NS |
3766 | configured with @option{--with-arch=cf} and 68020 code otherwise. |
3767 | ||
368b55f6 | 3768 | The @samp{m68k-*-netbsd} and |
10e96df4 NS |
3769 | @samp{m68k-*-openbsd} targets also support the @option{--with-arch} |
3770 | option. They will generate ColdFire CFV4e code when configured with | |
3771 | @option{--with-arch=cf} and 68020 code otherwise. | |
3772 | ||
3773 | You can override the default processors listed above by configuring | |
3774 | with @option{--with-cpu=@var{target}}. This @var{target} can either | |
3775 | be a @option{-mcpu} argument or one of the following values: | |
3776 | @samp{m68000}, @samp{m68010}, @samp{m68020}, @samp{m68030}, | |
900ec02d | 3777 | @samp{m68040}, @samp{m68060}, @samp{m68020-40} and @samp{m68020-60}. |
59fbf3cb | 3778 | |
4529dbf1 RS |
3779 | @html |
3780 | <hr /> | |
3781 | @end html | |
3782 | @heading @anchor{m68k-x-uclinux}m68k-*-uclinux | |
3783 | GCC 4.3 changed the uClinux configuration so that it uses the | |
3784 | @samp{m68k-linux-gnu} ABI rather than the @samp{m68k-elf} ABI. | |
3785 | It also added improved support for C++ and flat shared libraries, | |
3786 | both of which were ABI changes. However, you can still use the | |
3787 | original ABI by configuring for @samp{m68k-uclinuxoldabi} or | |
3788 | @samp{m68k-@var{vendor}-uclinuxoldabi}. | |
3789 | ||
e2491744 DD |
3790 | |
3791 | @html | |
3792 | <hr /> | |
3793 | @end html | |
3794 | @heading @anchor{mep-x-elf}mep-*-elf | |
5a99fe3e | 3795 | Toshiba Media embedded Processor. |
e2491744 DD |
3796 | This configuration is intended for embedded systems. |
3797 | ||
b8df899a | 3798 | @html |
b8db17af | 3799 | <hr /> |
b8df899a | 3800 | @end html |
5a4c9b10 | 3801 | @heading @anchor{mips-x-x}mips-*-* |
b8df899a JM |
3802 | If on a MIPS system you get an error message saying ``does not have gp |
3803 | sections for all it's [sic] sectons [sic]'', don't worry about it. This | |
3804 | happens whenever you use GAS with the MIPS linker, but there is not | |
3805 | really anything wrong, and it is okay to use the output file. You can | |
3806 | stop such warnings by installing the GNU linker. | |
3807 | ||
3808 | It would be nice to extend GAS to produce the gp tables, but they are | |
3809 | optional, and there should not be a warning about their absence. | |
3810 | ||
26979a17 PE |
3811 | The libstdc++ atomic locking routines for MIPS targets requires MIPS II |
3812 | and later. A patch went in just after the GCC 3.3 release to | |
3813 | make @samp{mips*-*-*} use the generic implementation instead. You can also | |
3814 | configure for @samp{mipsel-elf} as a workaround. The | |
3815 | @samp{mips*-*-linux*} target continues to use the MIPS II routines. More | |
3816 | work on this is expected in future releases. | |
3817 | ||
66471b47 DD |
3818 | @c If you make --with-llsc the default for another target, please also |
3819 | @c update the description of the --with-llsc option. | |
3820 | ||
3821 | The built-in @code{__sync_*} functions are available on MIPS II and | |
3822 | later systems and others that support the @samp{ll}, @samp{sc} and | |
3823 | @samp{sync} instructions. This can be overridden by passing | |
3824 | @option{--with-llsc} or @option{--without-llsc} when configuring GCC. | |
3825 | Since the Linux kernel emulates these instructions if they are | |
3826 | missing, the default for @samp{mips*-*-linux*} targets is | |
3827 | @option{--with-llsc}. The @option{--with-llsc} and | |
3828 | @option{--without-llsc} configure options may be overridden at compile | |
3829 | time by passing the @option{-mllsc} or @option{-mno-llsc} options to | |
3830 | the compiler. | |
3831 | ||
9f0df97a DD |
3832 | MIPS systems check for division by zero (unless |
3833 | @option{-mno-check-zero-division} is passed to the compiler) by | |
3834 | generating either a conditional trap or a break instruction. Using | |
3835 | trap results in smaller code, but is only supported on MIPS II and | |
3836 | later. Also, some versions of the Linux kernel have a bug that | |
8a36672b | 3837 | prevents trap from generating the proper signal (@code{SIGFPE}). To enable |
9f0df97a | 3838 | the use of break, use the @option{--with-divide=breaks} |
8a36672b | 3839 | @command{configure} option when configuring GCC@. The default is to |
9f0df97a DD |
3840 | use traps on systems that support them. |
3841 | ||
a4d05547 | 3842 | Cross-compilers for the MIPS as target using the MIPS assembler |
01e97976 JM |
3843 | currently do not work, because the auxiliary programs |
3844 | @file{mips-tdump.c} and @file{mips-tfile.c} can't be compiled on | |
0ee2ea09 | 3845 | anything but a MIPS@. It does work to cross compile for a MIPS |
01e97976 JM |
3846 | if you use the GNU assembler and linker. |
3847 | ||
3eb3cf05 DD |
3848 | The assembler from GNU binutils 2.17 and earlier has a bug in the way |
3849 | it sorts relocations for REL targets (o32, o64, EABI). This can cause | |
3850 | bad code to be generated for simple C++ programs. Also the linker | |
3851 | from GNU binutils versions prior to 2.17 has a bug which causes the | |
3852 | runtime linker stubs in very large programs, like @file{libgcj.so}, to | |
4e2e9e9b DD |
3853 | be incorrectly generated. GNU Binutils 2.18 and later (and snapshots |
3854 | made after Nov. 9, 2006) should be free from both of these problems. | |
549fb079 | 3855 | |
5fb57097 EB |
3856 | @html |
3857 | <hr /> | |
3858 | @end html | |
b953cc4b RO |
3859 | @heading @anchor{mips-sgi-irix5}mips-sgi-irix5 |
3860 | ||
9aaa1ee8 | 3861 | Support for IRIX 5 has been removed in GCC 4.6. |
c5e1045b | 3862 | |
f42974dc | 3863 | @html |
b8db17af | 3864 | <hr /> |
f42974dc | 3865 | @end html |
b953cc4b | 3866 | @heading @anchor{mips-sgi-irix6}mips-sgi-irix6 |
f42974dc | 3867 | |
9aaa1ee8 RO |
3868 | Support for IRIX 6 releases before 6.5 has been removed in GCC 4.6, as |
3869 | well as support for | |
ef369ad8 RO |
3870 | the O32 ABI. It is @emph{strongly} recommended to upgrade to at least |
3871 | IRIX 6.5.18. This release introduced full ISO C99 support, though for | |
3872 | the N32 and N64 ABIs only. | |
3873 | ||
9aaa1ee8 | 3874 | To build and use GCC on IRIX 6.5, you need the IRIX Development Foundation |
ef369ad8 | 3875 | (IDF) and IRIX Development Libraries (IDL). They are included with the |
9aaa1ee8 | 3876 | IRIX 6.5 media. |
ef369ad8 | 3877 | |
7e270317 | 3878 | If you are using SGI's MIPSpro @command{cc} as your bootstrap compiler, you must |
f42974dc DW |
3879 | ensure that the N32 ABI is in use. To test this, compile a simple C |
3880 | file with @command{cc} and then run @command{file} on the | |
3881 | resulting object file. The output should look like: | |
3882 | ||
3ab51846 | 3883 | @smallexample |
213ba345 | 3884 | test.o: ELF N32 MSB @dots{} |
3ab51846 | 3885 | @end smallexample |
f42974dc | 3886 | |
0b70519f | 3887 | @noindent |
f42974dc | 3888 | If you see: |
213ba345 | 3889 | |
3ab51846 | 3890 | @smallexample |
213ba345 | 3891 | test.o: ELF 32-bit MSB @dots{} |
3ab51846 | 3892 | @end smallexample |
213ba345 | 3893 | |
0b70519f | 3894 | @noindent |
213ba345 RO |
3895 | or |
3896 | ||
3ab51846 | 3897 | @smallexample |
213ba345 | 3898 | test.o: ELF 64-bit MSB @dots{} |
3ab51846 | 3899 | @end smallexample |
f42974dc | 3900 | |
0b70519f | 3901 | @noindent |
213ba345 | 3902 | then your version of @command{cc} uses the O32 or N64 ABI by default. You |
38209993 | 3903 | should set the environment variable @env{CC} to @samp{cc -n32} |
82563d35 | 3904 | before configuring GCC@. |
f42974dc | 3905 | |
0fca60ab | 3906 | If you want the resulting @command{gcc} to run on old 32-bit systems |
7e270317 | 3907 | with the MIPS R4400 CPU, you need to ensure that only code for the @samp{mips3} |
0fca60ab RO |
3908 | instruction set architecture (ISA) is generated. While GCC 3.x does |
3909 | this correctly, both GCC 2.95 and SGI's MIPSpro @command{cc} may change | |
3910 | the ISA depending on the machine where GCC is built. Using one of them | |
7e270317 RO |
3911 | as the bootstrap compiler may result in @samp{mips4} code, which won't run at |
3912 | all on @samp{mips3}-only systems. For the test program above, you should see: | |
0fca60ab | 3913 | |
3ab51846 | 3914 | @smallexample |
0fca60ab | 3915 | test.o: ELF N32 MSB mips-3 @dots{} |
3ab51846 | 3916 | @end smallexample |
0fca60ab | 3917 | |
0b70519f | 3918 | @noindent |
0fca60ab RO |
3919 | If you get: |
3920 | ||
3ab51846 | 3921 | @smallexample |
0fca60ab | 3922 | test.o: ELF N32 MSB mips-4 @dots{} |
3ab51846 | 3923 | @end smallexample |
0fca60ab | 3924 | |
0b70519f | 3925 | @noindent |
0fca60ab RO |
3926 | instead, you should set the environment variable @env{CC} to @samp{cc |
3927 | -n32 -mips3} or @samp{gcc -mips3} respectively before configuring GCC@. | |
3928 | ||
82563d35 RS |
3929 | MIPSpro C 7.4 may cause bootstrap failures, due to a bug when inlining |
3930 | @code{memcmp}. Either add @code{-U__INLINE_INTRINSICS} to the @env{CC} | |
3931 | environment variable as a workaround or upgrade to MIPSpro C 7.4.1m. | |
3932 | ||
9aaa1ee8 | 3933 | GCC on IRIX 6.5 is usually built to support the N32 and N64 ABIs. If |
7e270317 RO |
3934 | you build GCC on a system that doesn't have the N64 libraries installed |
3935 | or cannot run 64-bit binaries, | |
213ba345 | 3936 | you need to configure with @option{--disable-multilib} so GCC doesn't |
9aaa1ee8 | 3937 | try to use them. |
7e270317 | 3938 | Look for @file{/usr/lib64/libc.so.1} to see if you |
213ba345 RO |
3939 | have the 64-bit libraries installed. |
3940 | ||
ef369ad8 RO |
3941 | GCC must be configured with GNU @command{as}. The latest version, from GNU |
3942 | binutils 2.20.1, is known to work. On the other hand, bootstrap fails | |
3943 | with GNU @command{ld} at least since GNU binutils 2.17. | |
f42974dc | 3944 | |
40f5cc95 | 3945 | The @option{--enable-libgcj} |
b953cc4b | 3946 | option is disabled by default: IRIX 6 uses a very low default limit |
7e270317 | 3947 | (20480) for the command line length. Although @command{libtool} contains a |
b953cc4b RO |
3948 | workaround for this problem, at least the N64 @samp{libgcj} is known not |
3949 | to build despite this, running into an internal error of the native | |
3950 | @command{ld}. A sure fix is to increase this limit (@samp{ncargs}) to | |
3951 | its maximum of 262144 bytes. If you have root access, you can use the | |
3952 | @command{systune} command to do this. | |
ef369ad8 | 3953 | @c FIXME: does this work with current libtool? |
b953cc4b | 3954 | |
93e89068 PC |
3955 | @code{wchar_t} support in @samp{libstdc++} is not available for old |
3956 | IRIX 6.5.x releases, @math{x < 19}. The problem cannot be autodetected | |
3957 | and in order to build GCC for such targets you need to configure with | |
3958 | @option{--disable-wchar_t}. | |
3959 | ||
cceb575c AG |
3960 | @html |
3961 | <hr /> | |
3962 | @end html | |
3963 | @heading @anchor{moxie-x-elf}moxie-*-elf | |
3964 | The moxie processor. See @uref{http://moxielogic.org/} for more | |
3965 | information about this processor. | |
3966 | ||
b8df899a | 3967 | @html |
b8db17af | 3968 | <hr /> |
b8df899a | 3969 | @end html |
5a4c9b10 | 3970 | @heading @anchor{powerpc-x-x}powerpc-*-* |
b8df899a | 3971 | |
6cfb3f16 JM |
3972 | You can specify a default version for the @option{-mcpu=@var{cpu_type}} |
3973 | switch by using the configure option @option{--with-cpu-@var{cpu_type}}. | |
b8df899a | 3974 | |
1590a115 NF |
3975 | You will need |
3976 | @uref{ftp://ftp.kernel.org/pub/linux/devel/binutils,,binutils 2.15} | |
3977 | or newer for a working GCC@. | |
3978 | ||
4f2b1139 | 3979 | @html |
b8db17af | 3980 | <hr /> |
4f2b1139 | 3981 | @end html |
5a4c9b10 | 3982 | @heading @anchor{powerpc-x-darwin}powerpc-*-darwin* |
4f2b1139 SS |
3983 | PowerPC running Darwin (Mac OS X kernel). |
3984 | ||
4f2b1139 SS |
3985 | Pre-installed versions of Mac OS X may not include any developer tools, |
3986 | meaning that you will not be able to build GCC from source. Tool | |
3987 | binaries are available at | |
beb5f807 | 3988 | @uref{http://developer.apple.com/darwin/projects/compiler/} (free |
4f2b1139 SS |
3989 | registration required). |
3990 | ||
80c85ca2 MS |
3991 | This version of GCC requires at least cctools-590.36. The |
3992 | cctools-590.36 package referenced from | |
3993 | @uref{http://gcc.gnu.org/ml/gcc/2006-03/msg00507.html} will not work | |
3994 | on systems older than 10.3.9 (aka darwin7.9.0). | |
4f2b1139 | 3995 | |
021c4bfd | 3996 | @html |
b8db17af | 3997 | <hr /> |
021c4bfd | 3998 | @end html |
cd985f66 | 3999 | @heading @anchor{powerpc-x-elf}powerpc-*-elf |
021c4bfd RO |
4000 | PowerPC system in big endian mode, running System V.4. |
4001 | ||
f42974dc | 4002 | @html |
b8db17af | 4003 | <hr /> |
f42974dc | 4004 | @end html |
5a4c9b10 | 4005 | @heading @anchor{powerpc-x-linux-gnu}powerpc*-*-linux-gnu* |
f42974dc | 4006 | |
1590a115 | 4007 | PowerPC system in big endian mode running Linux. |
f42974dc | 4008 | |
edf1b3f3 | 4009 | @html |
b8db17af | 4010 | <hr /> |
edf1b3f3 | 4011 | @end html |
5a4c9b10 | 4012 | @heading @anchor{powerpc-x-netbsd}powerpc-*-netbsd* |
f0947430 | 4013 | PowerPC system in big endian mode running NetBSD@. |
edf1b3f3 | 4014 | |
b8df899a | 4015 | @html |
b8db17af | 4016 | <hr /> |
b8df899a | 4017 | @end html |
5a4c9b10 | 4018 | @heading @anchor{powerpc-x-eabisim}powerpc-*-eabisim |
b8df899a JM |
4019 | Embedded PowerPC system in big endian mode for use in running under the |
4020 | PSIM simulator. | |
4021 | ||
b8df899a | 4022 | @html |
b8db17af | 4023 | <hr /> |
b8df899a | 4024 | @end html |
5a4c9b10 | 4025 | @heading @anchor{powerpc-x-eabi}powerpc-*-eabi |
b8df899a JM |
4026 | Embedded PowerPC system in big endian mode. |
4027 | ||
b8df899a | 4028 | @html |
b8db17af | 4029 | <hr /> |
b8df899a | 4030 | @end html |
cd985f66 | 4031 | @heading @anchor{powerpcle-x-elf}powerpcle-*-elf |
b8df899a JM |
4032 | PowerPC system in little endian mode, running System V.4. |
4033 | ||
b8df899a | 4034 | @html |
b8db17af | 4035 | <hr /> |
b8df899a | 4036 | @end html |
5a4c9b10 | 4037 | @heading @anchor{powerpcle-x-eabisim}powerpcle-*-eabisim |
b8df899a JM |
4038 | Embedded PowerPC system in little endian mode for use in running under |
4039 | the PSIM simulator. | |
4040 | ||
4041 | @html | |
b8db17af | 4042 | <hr /> |
b8df899a | 4043 | @end html |
5a4c9b10 | 4044 | @heading @anchor{powerpcle-x-eabi}powerpcle-*-eabi |
b8df899a JM |
4045 | Embedded PowerPC system in little endian mode. |
4046 | ||
65a324b4 NC |
4047 | @html |
4048 | <hr /> | |
4049 | @end html | |
4050 | @heading @anchor{rx-x-elf}rx-*-elf | |
4051 | The Renesas RX processor. See | |
4052 | @uref{http://eu.renesas.com/fmwk.jsp?cnt=rx600_series_landing.jsp&fp=/products/mpumcu/rx_family/rx600_series} | |
4053 | for more information about this processor. | |
4054 | ||
91abf72d | 4055 | @html |
b8db17af | 4056 | <hr /> |
91abf72d | 4057 | @end html |
5a4c9b10 | 4058 | @heading @anchor{s390-x-linux}s390-*-linux* |
95fef11f | 4059 | S/390 system running GNU/Linux for S/390@. |
91abf72d HP |
4060 | |
4061 | @html | |
b8db17af | 4062 | <hr /> |
91abf72d | 4063 | @end html |
5a4c9b10 | 4064 | @heading @anchor{s390x-x-linux}s390x-*-linux* |
95fef11f | 4065 | zSeries system (64-bit) running GNU/Linux for zSeries@. |
91abf72d | 4066 | |
8bf06993 UW |
4067 | @html |
4068 | <hr /> | |
4069 | @end html | |
5a4c9b10 | 4070 | @heading @anchor{s390x-ibm-tpf}s390x-ibm-tpf* |
8a36672b | 4071 | zSeries system (64-bit) running TPF@. This platform is |
8bf06993 UW |
4072 | supported as cross-compilation target only. |
4073 | ||
f42974dc | 4074 | @html |
b8db17af | 4075 | <hr /> |
f42974dc | 4076 | @end html |
250d5688 | 4077 | @c Please use Solaris 2 to refer to all release of Solaris, starting |
1460af95 | 4078 | @c with 2.0 until 2.6, 7, 8, etc. Solaris 1 was a marketing name for |
250d5688 RO |
4079 | @c SunOS 4 releases which we don't use to avoid confusion. Solaris |
4080 | @c alone is too unspecific and must be avoided. | |
5a4c9b10 | 4081 | @heading @anchor{x-x-solaris2}*-*-solaris2* |
f42974dc | 4082 | |
c7392d11 | 4083 | Support for Solaris 7 has been removed in GCC 4.6. |
8c5cfa89 RO |
4084 | |
4085 | Sun does not ship a C compiler with Solaris 2, though you can download | |
4086 | the Sun Studio compilers for free from | |
4087 | @uref{http://developers.sun.com/sunstudio/downloads/}. Alternatively, | |
4088 | you can install a pre-built GCC to bootstrap and install GCC. See the | |
dbd210ef | 4089 | @uref{binaries.html,,binaries page} for details. |
f42974dc | 4090 | |
250d5688 | 4091 | The Solaris 2 @command{/bin/sh} will often fail to configure |
8c5cfa89 | 4092 | @samp{libstdc++-v3}, @samp{boehm-gc} or @samp{libjava}. We therefore |
1da1ce3f | 4093 | recommend using the following initial sequence of commands |
bc890961 EB |
4094 | |
4095 | @smallexample | |
4096 | % CONFIG_SHELL=/bin/ksh | |
4097 | % export CONFIG_SHELL | |
bc890961 EB |
4098 | @end smallexample |
4099 | ||
8c5cfa89 | 4100 | @noindent |
1da1ce3f | 4101 | and proceed as described in @uref{configure.html,,the configure instructions}. |
37de1373 | 4102 | In addition we strongly recommend specifying an absolute path to invoke |
8c5cfa89 | 4103 | @command{@var{srcdir}/configure}. |
e6855a2d | 4104 | |
b8df899a | 4105 | Solaris 2 comes with a number of optional OS packages. Some of these |
92441f83 | 4106 | are needed to use GCC fully, namely @code{SUNWarc}, |
dbd210ef KC |
4107 | @code{SUNWbtool}, @code{SUNWesu}, @code{SUNWhea}, @code{SUNWlibm}, |
4108 | @code{SUNWsprot}, and @code{SUNWtoo}. If you did not install all | |
250d5688 | 4109 | optional packages when installing Solaris 2, you will need to verify that |
b8df899a JM |
4110 | the packages that GCC needs are installed. |
4111 | ||
4112 | To check whether an optional package is installed, use | |
dbd210ef | 4113 | the @command{pkginfo} command. To add an optional package, use the |
250d5688 | 4114 | @command{pkgadd} command. For further details, see the Solaris 2 |
b8df899a JM |
4115 | documentation. |
4116 | ||
250d5688 | 4117 | Trying to use the linker and other tools in |
b8df899a JM |
4118 | @file{/usr/ucb} to install GCC has been observed to cause trouble. |
4119 | For example, the linker may hang indefinitely. The fix is to remove | |
250d5688 | 4120 | @file{/usr/ucb} from your @env{PATH}. |
f42974dc | 4121 | |
bc890961 EB |
4122 | The build process works more smoothly with the legacy Sun tools so, if you |
4123 | have @file{/usr/xpg4/bin} in your @env{PATH}, we recommend that you place | |
4124 | @file{/usr/bin} before @file{/usr/xpg4/bin} for the duration of the build. | |
4125 | ||
dd178909 RO |
4126 | We recommend the use of the Sun assembler or the GNU assembler, in |
4127 | conjunction with the Sun linker. The GNU @command{as} | |
8c5cfa89 RO |
4128 | versions included in Solaris 10, from GNU binutils 2.15, and Solaris 11, |
4129 | from GNU binutils 2.19, are known to work. They can be found in | |
dd178909 RO |
4130 | @file{/usr/sfw/bin/gas}. Current versions of GNU binutils (2.20.1) |
4131 | are known to work as well. Note that your mileage may vary | |
2bd58b1b EB |
4132 | if you use a combination of the GNU tools and the Sun tools: while the |
4133 | combination GNU @command{as} + Sun @command{ld} should reasonably work, | |
51e9a60c EB |
4134 | the reverse combination Sun @command{as} + GNU @command{ld} is known to |
4135 | cause memory corruption at runtime in some cases for C++ programs. | |
8c5cfa89 | 4136 | @c FIXME: still? |
dd178909 | 4137 | GNU @command{ld} usually works as well, although the version included in |
8c5cfa89 RO |
4138 | Solaris 10 cannot be used due to several bugs. Again, the current |
4139 | version (2.20.1) is known to work, but generally lacks platform specific | |
4140 | features, so better stay with Sun @command{ld}. | |
2c00bd42 | 4141 | |
c18dc5cc RO |
4142 | To enable symbol versioning in @samp{libstdc++} with Sun @command{ld}, |
4143 | you need to have any version of GNU @command{c++filt}, which is part of | |
4144 | GNU binutils. @samp{libstdc++} symbol versioning will be disabled if no | |
4145 | appropriate version is found. Sun @command{c++filt} from the Sun Studio | |
4146 | compilers does @emph{not} work. | |
4147 | ||
250d5688 | 4148 | Sun bug 4296832 turns up when compiling X11 headers with GCC 2.95 or |
2bd58b1b EB |
4149 | newer: @command{g++} will complain that types are missing. These headers |
4150 | assume that omitting the type means @code{int}; this assumption worked for | |
7e1542b9 | 4151 | C90 but is wrong for C++, and is now wrong for C99 also. |
250d5688 | 4152 | |
13ba36b4 | 4153 | @command{g++} accepts such (invalid) constructs with the option |
2bd58b1b | 4154 | @option{-fpermissive}; it will assume that any missing type is @code{int} |
7e1542b9 | 4155 | (as defined by C90). |
250d5688 | 4156 | |
c7392d11 | 4157 | There are patches for Solaris 8 (108652-24 or newer for SPARC, |
250d5688 | 4158 | 108653-22 for Intel) that fix this bug. |
f42974dc | 4159 | |
c7525a64 KG |
4160 | Sun bug 4927647 sometimes causes random spurious testsuite failures |
4161 | related to missing diagnostic output. This bug doesn't affect GCC | |
4162 | itself, rather it is a kernel bug triggered by the @command{expect} | |
4163 | program which is used only by the GCC testsuite driver. When the bug | |
4164 | causes the @command{expect} program to miss anticipated output, extra | |
4165 | testsuite failures appear. | |
4166 | ||
4167 | There are patches for Solaris 8 (117350-12 or newer for SPARC, | |
4168 | 117351-12 or newer for Intel) and Solaris 9 (117171-11 or newer for | |
4169 | SPARC, 117172-11 or newer for Intel) that address this problem. | |
4170 | ||
16c9d3b1 RO |
4171 | Solaris~8 provides an alternate implementation of the thread libraries, |
4172 | @samp{libpthread} and @samp{libthread}. They are required for TLS | |
4173 | support and have been made the default in Solaris~9, so they are always | |
4174 | used on Solaris~8. | |
4175 | ||
4176 | Thread-local storage (TLS) is supported in Solaris~8 and 9, but requires | |
4177 | some patches. The @samp{libthread} patches provide the | |
4178 | @code{__tls_get_addr} (SPARC, 64-bit x86) resp.@ @code{___tls_get_addr} | |
4179 | (32-bit x86) functions. On Solaris~8, you need 108993-26 or newer on | |
4180 | SPARC, 108994-26 or newer on Intel. On Solaris~9, the necessary support | |
4181 | on SPARC is present since FCS, while 114432-05 or newer is reqired on | |
4182 | Intel. Additionally, on Solaris~8, patch 109147-14 or newer on SPARC or | |
4183 | 109148-22 or newer on Intel are required for the Sun @command{ld} and | |
4184 | runtime linker (@command{ld.so.1}) support. Again, Solaris~9/SPARC | |
4185 | works since FCS, while 113986-02 is required on Intel. The linker | |
4186 | patches must be installed even if GNU @command{ld} is used. Sun | |
4187 | @command{as} in Solaris~8 and 9 doesn't support the necessary | |
4188 | relocations, so GNU @command{as} must be used. The @command{configure} | |
4189 | script checks for those prerequisites and automatically enables TLS | |
4190 | support if they are met. Although those minimal patch versions should | |
4191 | work, it is recommended to use the latest patch versions which include | |
4192 | additional bug fixes. | |
4193 | ||
d191cd06 EB |
4194 | @html |
4195 | <hr /> | |
4196 | @end html | |
4197 | @heading @anchor{sparc-x-x}sparc*-*-* | |
4198 | ||
4199 | This section contains general configuration information for all | |
4200 | SPARC-based platforms. In addition to reading this section, please | |
4201 | read all other sections that match your target. | |
4202 | ||
4203 | Newer versions of the GNU Multiple Precision Library (GMP), the MPFR | |
4204 | library and the MPC library are known to be miscompiled by earlier | |
4205 | versions of GCC on these platforms. We therefore recommend the use | |
4206 | of the exact versions of these libraries listed as minimal versions | |
4207 | in @uref{prerequisites.html,,the prerequisites}. | |
4208 | ||
dbd210ef | 4209 | @html |
b8db17af | 4210 | <hr /> |
dbd210ef | 4211 | @end html |
5a4c9b10 | 4212 | @heading @anchor{sparc-sun-solaris2}sparc-sun-solaris2* |
dbd210ef | 4213 | |
8c5cfa89 | 4214 | When GCC is configured to use GNU binutils 2.14 or later, the binaries |
1405141b DN |
4215 | produced are smaller than the ones produced using Sun's native tools; |
4216 | this difference is quite significant for binaries containing debugging | |
4217 | information. | |
4218 | ||
03b272d2 | 4219 | Starting with Solaris 7, the operating system is capable of executing |
975c6e4e RO |
4220 | 64-bit SPARC V9 binaries. GCC 3.1 and later properly supports |
4221 | this; the @option{-m64} option enables 64-bit code generation. | |
4222 | However, if all you want is code tuned for the UltraSPARC CPU, you | |
4223 | should try the @option{-mtune=ultrasparc} option instead, which produces | |
4224 | code that, unlike full 64-bit code, can still run on non-UltraSPARC | |
edf1c8df | 4225 | machines. |
03b272d2 | 4226 | |
975c6e4e | 4227 | When configuring on a Solaris 7 or later system that is running a kernel |
8947df0c RH |
4228 | that supports only 32-bit binaries, one must configure with |
4229 | @option{--disable-multilib}, since we will not be able to build the | |
4230 | 64-bit target libraries. | |
3fc602a0 | 4231 | |
ae81c844 EB |
4232 | GCC 3.3 and GCC 3.4 trigger code generation bugs in earlier versions of |
4233 | the GNU compiler (especially GCC 3.0.x versions), which lead to the | |
4234 | miscompilation of the stage1 compiler and the subsequent failure of the | |
4235 | bootstrap process. A workaround is to use GCC 3.2.3 as an intermediary | |
431ae0bf | 4236 | stage, i.e.@: to bootstrap that compiler with the base compiler and then |
ae81c844 EB |
4237 | use it to bootstrap the final compiler. |
4238 | ||
94b18ec1 EB |
4239 | GCC 3.4 triggers a code generation bug in versions 5.4 (Sun ONE Studio 7) |
4240 | and 5.5 (Sun ONE Studio 8) of the Sun compiler, which causes a bootstrap | |
4241 | failure in form of a miscompilation of the stage1 compiler by the Sun | |
4242 | compiler. This is Sun bug 4974440. This is fixed with patch 112760-07. | |
4243 | ||
8c5cfa89 | 4244 | GCC 3.4 changed the default debugging format from Stabs to DWARF-2 for |
dd48afcd EB |
4245 | 32-bit code on Solaris 7 and later. If you use the Sun assembler, this |
4246 | change apparently runs afoul of Sun bug 4910101 (which is referenced as | |
e4ae5e77 | 4247 | an x86-only problem by Sun, probably because they do not use DWARF-2). |
dd48afcd EB |
4248 | A symptom of the problem is that you cannot compile C++ programs like |
4249 | @command{groff} 1.19.1 without getting messages similar to the following: | |
7c2f2b41 EB |
4250 | |
4251 | @smallexample | |
4252 | ld: warning: relocation error: R_SPARC_UA32: @dots{} | |
4253 | external symbolic relocation against non-allocatable section | |
4254 | .debug_info cannot be processed at runtime: relocation ignored. | |
4255 | @end smallexample | |
4256 | ||
8c5cfa89 | 4257 | @noindent |
7c2f2b41 EB |
4258 | To work around this problem, compile with @option{-gstabs+} instead of |
4259 | plain @option{-g}. | |
1460af95 | 4260 | |
d191cd06 EB |
4261 | When configuring the GNU Multiple Precision Library (GMP), the MPFR |
4262 | library or the MPC library on a Solaris 7 or later system, the canonical | |
4263 | target triplet must be specified as the @command{build} parameter on the | |
4264 | configure line. This target triplet can be obtained by invoking @command{./config.guess} in the toplevel source directory of GCC (and | |
4265 | not that of GMP or MPFR or MPC). For example on a Solaris 9 system: | |
fdbf04c8 EB |
4266 | |
4267 | @smallexample | |
c7392d11 | 4268 | % ./configure --build=sparc-sun-solaris2.9 --prefix=xxx |
fdbf04c8 EB |
4269 | @end smallexample |
4270 | ||
cb717ac4 RO |
4271 | @html |
4272 | <hr /> | |
4273 | @end html | |
4274 | @heading @anchor{sparc-sun-solaris210}sparc-sun-solaris2.10 | |
4275 | ||
4276 | There is a bug in older versions of the Sun assembler which breaks | |
4277 | thread-local storage (TLS). A typical error message is | |
4278 | ||
4279 | @smallexample | |
4280 | ld: fatal: relocation error: R_SPARC_TLS_LE_HIX22: file /var/tmp//ccamPA1v.o: | |
4281 | symbol <unknown>: bad symbol type SECT: symbol type must be TLS | |
4282 | @end smallexample | |
4283 | ||
8c5cfa89 | 4284 | @noindent |
cb717ac4 RO |
4285 | This bug is fixed in Sun patch 118683-03 or later. |
4286 | ||
c6fa9728 | 4287 | @html |
b8db17af | 4288 | <hr /> |
c6fa9728 | 4289 | @end html |
5a4c9b10 | 4290 | @heading @anchor{sparc-x-linux}sparc-*-linux* |
c6fa9728 JS |
4291 | |
4292 | GCC versions 3.0 and higher require binutils 2.11.2 and glibc 2.2.4 | |
4293 | or newer on this platform. All earlier binutils and glibc | |
4294 | releases mishandled unaligned relocations on @code{sparc-*-*} targets. | |
4295 | ||
4296 | ||
f42974dc | 4297 | @html |
b8db17af | 4298 | <hr /> |
f42974dc | 4299 | @end html |
5a4c9b10 | 4300 | @heading @anchor{sparc64-x-solaris2}sparc64-*-solaris2* |
e403b4bc | 4301 | |
b3c9881c EB |
4302 | When configuring the GNU Multiple Precision Library (GMP) or the |
4303 | MPFR library, the canonical target triplet must be specified as | |
4304 | the @command{build} parameter on the configure line. For example | |
c7392d11 | 4305 | on a Solaris 9 system: |
b3c9881c EB |
4306 | |
4307 | @smallexample | |
c7392d11 | 4308 | % ./configure --build=sparc64-sun-solaris2.9 --prefix=xxx |
b3c9881c EB |
4309 | @end smallexample |
4310 | ||
e403b4bc CR |
4311 | The following compiler flags must be specified in the configure |
4312 | step in order to bootstrap this target with the Sun compiler: | |
4313 | ||
3ab51846 | 4314 | @smallexample |
b3c9881c | 4315 | % CC="cc -xarch=v9 -xildoff" @var{srcdir}/configure [@var{options}] [@var{target}] |
3ab51846 | 4316 | @end smallexample |
e403b4bc | 4317 | |
8c5cfa89 | 4318 | @noindent |
b3c9881c EB |
4319 | @option{-xarch=v9} specifies the SPARC-V9 architecture to the Sun toolchain |
4320 | and @option{-xildoff} turns off the incremental linker. | |
0dc7ee3c EB |
4321 | |
4322 | @html | |
4323 | <hr /> | |
4324 | @end html | |
5a4c9b10 | 4325 | @heading @anchor{sparcv9-x-solaris2}sparcv9-*-solaris2* |
0dc7ee3c | 4326 | |
8c5cfa89 | 4327 | This is a synonym for @samp{sparc64-*-solaris2*}. |
f42974dc | 4328 | |
4977bab6 ZW |
4329 | @html |
4330 | <hr /> | |
4331 | @end html | |
5a4c9b10 | 4332 | @heading @anchor{x-x-vxworks}*-*-vxworks* |
4977bab6 | 4333 | Support for VxWorks is in flux. At present GCC supports @emph{only} the |
8a36672b | 4334 | very recent VxWorks 5.5 (aka Tornado 2.2) release, and only on PowerPC@. |
4977bab6 ZW |
4335 | We welcome patches for other architectures supported by VxWorks 5.5. |
4336 | Support for VxWorks AE would also be welcome; we believe this is merely | |
4337 | a matter of writing an appropriate ``configlette'' (see below). We are | |
4338 | not interested in supporting older, a.out or COFF-based, versions of | |
4339 | VxWorks in GCC 3. | |
4340 | ||
4341 | VxWorks comes with an older version of GCC installed in | |
4342 | @file{@var{$WIND_BASE}/host}; we recommend you do not overwrite it. | |
4343 | Choose an installation @var{prefix} entirely outside @var{$WIND_BASE}. | |
4344 | Before running @command{configure}, create the directories @file{@var{prefix}} | |
4345 | and @file{@var{prefix}/bin}. Link or copy the appropriate assembler, | |
8a36672b | 4346 | linker, etc.@: into @file{@var{prefix}/bin}, and set your @var{PATH} to |
4977bab6 ZW |
4347 | include that directory while running both @command{configure} and |
4348 | @command{make}. | |
4349 | ||
4350 | You must give @command{configure} the | |
4351 | @option{--with-headers=@var{$WIND_BASE}/target/h} switch so that it can | |
4352 | find the VxWorks system headers. Since VxWorks is a cross compilation | |
4353 | target only, you must also specify @option{--target=@var{target}}. | |
4354 | @command{configure} will attempt to create the directory | |
4355 | @file{@var{prefix}/@var{target}/sys-include} and copy files into it; | |
4356 | make sure the user running @command{configure} has sufficient privilege | |
4357 | to do so. | |
4358 | ||
4359 | GCC's exception handling runtime requires a special ``configlette'' | |
4360 | module, @file{contrib/gthr_supp_vxw_5x.c}. Follow the instructions in | |
4361 | that file to add the module to your kernel build. (Future versions of | |
daf2f129 | 4362 | VxWorks will incorporate this module.) |
4977bab6 | 4363 | |
7e081a0c AJ |
4364 | @html |
4365 | <hr /> | |
4366 | @end html | |
d8fcd085 | 4367 | @heading @anchor{x86-64-x-x}x86_64-*-*, amd64-*-* |
7e081a0c AJ |
4368 | |
4369 | GCC supports the x86-64 architecture implemented by the AMD64 processor | |
8a36672b | 4370 | (amd64-*-* is an alias for x86_64-*-*) on GNU/Linux, FreeBSD and NetBSD@. |
7e081a0c AJ |
4371 | On GNU/Linux the default is a bi-arch compiler which is able to generate |
4372 | both 64-bit x86-64 and 32-bit x86 code (via the @option{-m32} switch). | |
4373 | ||
fd29f6ea | 4374 | @html |
b8db17af | 4375 | <hr /> |
fd29f6ea | 4376 | @end html |
6d656178 | 4377 | @heading @anchor{xtensa-x-elf}xtensa*-*-elf |
fd29f6ea BW |
4378 | |
4379 | This target is intended for embedded Xtensa systems using the | |
4380 | @samp{newlib} C library. It uses ELF but does not support shared | |
4381 | objects. Designed-defined instructions specified via the | |
4382 | Tensilica Instruction Extension (TIE) language are only supported | |
4383 | through inline assembly. | |
4384 | ||
4385 | The Xtensa configuration information must be specified prior to | |
e677f70c | 4386 | building GCC@. The @file{include/xtensa-config.h} header |
fd29f6ea BW |
4387 | file contains the configuration information. If you created your |
4388 | own Xtensa configuration with the Xtensa Processor Generator, the | |
4389 | downloaded files include a customized copy of this header file, | |
4390 | which you can use to replace the default header file. | |
4391 | ||
4392 | @html | |
b8db17af | 4393 | <hr /> |
fd29f6ea | 4394 | @end html |
6d656178 | 4395 | @heading @anchor{xtensa-x-linux}xtensa*-*-linux* |
fd29f6ea BW |
4396 | |
4397 | This target is for Xtensa systems running GNU/Linux. It supports ELF | |
4398 | shared objects and the GNU C library (glibc). It also generates | |
4399 | position-independent code (PIC) regardless of whether the | |
4400 | @option{-fpic} or @option{-fPIC} options are used. In other | |
f282ffb3 | 4401 | respects, this target is the same as the |
6d656178 | 4402 | @uref{#xtensa*-*-elf,,@samp{xtensa*-*-elf}} target. |
fd29f6ea | 4403 | |
f42974dc | 4404 | @html |
b8db17af | 4405 | <hr /> |
f42974dc | 4406 | @end html |
aad416fb AL |
4407 | @heading @anchor{windows}Microsoft Windows |
4408 | ||
4409 | @subheading Intel 16-bit versions | |
4410 | The 16-bit versions of Microsoft Windows, such as Windows 3.1, are not | |
4411 | supported. | |
4412 | ||
4413 | However, the 32-bit port has limited support for Microsoft | |
4414 | Windows 3.11 in the Win32s environment, as a target only. See below. | |
4415 | ||
4416 | @subheading Intel 32-bit versions | |
4417 | ||
4418 | The 32-bit versions of Windows, including Windows 95, Windows NT, Windows | |
4419 | XP, and Windows Vista, are supported by several different target | |
4420 | platforms. These targets differ in which Windows subsystem they target | |
4421 | and which C libraries are used. | |
4422 | ||
4423 | @itemize | |
4424 | @item Cygwin @uref{#x-x-cygwin,,*-*-cygwin}: Cygwin provides a user-space | |
4425 | Linux API emulation layer in the Win32 subsystem. | |
4426 | @item Interix @uref{#x-x-interix,,*-*-interix}: The Interix subsystem | |
4427 | provides native support for POSIX. | |
53e350d3 | 4428 | @item MinGW @uref{#x-x-mingw32,,*-*-mingw32}: MinGW is a native GCC port for |
aad416fb AL |
4429 | the Win32 subsystem that provides a subset of POSIX. |
4430 | @item MKS i386-pc-mks: NuTCracker from MKS. See | |
4431 | @uref{http://www.mkssoftware.com/} for more information. | |
4432 | @end itemize | |
4433 | ||
4434 | @subheading Intel 64-bit versions | |
4435 | ||
4436 | GCC contains support for x86-64 using the mingw-w64 | |
4437 | runtime library, available from @uref{http://mingw-w64.sourceforge.net/}. | |
4438 | This library should be used with the target triple x86_64-pc-mingw32. | |
4439 | ||
4440 | Presently Windows for Itanium is not supported. | |
4441 | ||
4442 | @subheading Windows CE | |
4443 | ||
4444 | Windows CE is supported as a target only on ARM (arm-wince-pe), Hitachi | |
4445 | SuperH (sh-wince-pe), and MIPS (mips-wince-pe). | |
4446 | ||
4447 | @subheading Other Windows Platforms | |
4448 | ||
4449 | GCC no longer supports Windows NT on the Alpha or PowerPC. | |
4450 | ||
4451 | GCC no longer supports the Windows POSIX subsystem. However, it does | |
4452 | support the Interix subsystem. See above. | |
4453 | ||
4454 | Old target names including *-*-winnt and *-*-windowsnt are no longer used. | |
4455 | ||
4456 | PW32 (i386-pc-pw32) support was never completed, and the project seems to | |
4457 | be inactive. See @uref{http://pw32.sourceforge.net/} for more information. | |
4458 | ||
4459 | UWIN support has been removed due to a lack of maintenance. | |
4460 | ||
4461 | @html | |
4462 | <hr /> | |
4463 | @end html | |
4464 | @heading @anchor{x-x-cygwin}*-*-cygwin | |
f42974dc | 4465 | |
5b65d351 | 4466 | Ports of GCC are included with the |
f42974dc DW |
4467 | @uref{http://www.cygwin.com/,,Cygwin environment}. |
4468 | ||
5b65d351 GP |
4469 | GCC will build under Cygwin without modification; it does not build |
4470 | with Microsoft's C++ compiler and there are no plans to make it do so. | |
ccc1ce6e | 4471 | |
977f7997 DK |
4472 | The Cygwin native compiler can be configured to target any 32-bit x86 |
4473 | cpu architecture desired; the default is i686-pc-cygwin. It should be | |
4474 | used with as up-to-date a version of binutils as possible; use either | |
4475 | the latest official GNU binutils release in the Cygwin distribution, | |
4476 | or version 2.20 or above if building your own. | |
aad416fb AL |
4477 | |
4478 | @html | |
4479 | <hr /> | |
4480 | @end html | |
4481 | @heading @anchor{x-x-interix}*-*-interix | |
4482 | ||
4483 | The Interix target is used by OpenNT, Interix, Services For UNIX (SFU), | |
4484 | and Subsystem for UNIX-based Applications (SUA). Applications compiled | |
4485 | with this target run in the Interix subsystem, which is separate from | |
4486 | the Win32 subsystem. This target was last known to work in GCC 3.3. | |
4487 | ||
4488 | For more information, see @uref{http://www.interix.com/}. | |
4489 | ||
4490 | @html | |
4491 | <hr /> | |
4492 | @end html | |
4493 | @heading @anchor{x-x-mingw32}*-*-mingw32 | |
4494 | ||
4495 | GCC will build with and support only MinGW runtime 3.12 and later. | |
fa692084 JJ |
4496 | Earlier versions of headers are incompatible with the new default semantics |
4497 | of @code{extern inline} in @code{-std=c99} and @code{-std=gnu99} modes. | |
4498 | ||
f42974dc | 4499 | @html |
b8db17af | 4500 | <hr /> |
f42974dc | 4501 | @end html |
ef88b07d | 4502 | @heading @anchor{older}Older systems |
f9047ed3 JM |
4503 | |
4504 | GCC contains support files for many older (1980s and early | |
4505 | 1990s) Unix variants. For the most part, support for these systems | |
4506 | has not been deliberately removed, but it has not been maintained for | |
c7bdf0a6 | 4507 | several years and may suffer from bitrot. |
f9047ed3 | 4508 | |
c7bdf0a6 | 4509 | Starting with GCC 3.1, each release has a list of ``obsoleted'' systems. |
9340544b ZW |
4510 | Support for these systems is still present in that release, but |
4511 | @command{configure} will fail unless the @option{--enable-obsolete} | |
c7bdf0a6 ZW |
4512 | option is given. Unless a maintainer steps forward, support for these |
4513 | systems will be removed from the next release of GCC@. | |
f9047ed3 JM |
4514 | |
4515 | Support for old systems as hosts for GCC can cause problems if the | |
4516 | workarounds for compiler, library and operating system bugs affect the | |
161d7b59 | 4517 | cleanliness or maintainability of the rest of GCC@. In some cases, to |
f9047ed3 JM |
4518 | bring GCC up on such a system, if still possible with current GCC, may |
4519 | require first installing an old version of GCC which did work on that | |
c7bdf0a6 ZW |
4520 | system, and using it to compile a more recent GCC, to avoid bugs in the |
4521 | vendor compiler. Old releases of GCC 1 and GCC 2 are available in the | |
4522 | @file{old-releases} directory on the @uref{../mirrors.html,,GCC mirror | |
4523 | sites}. Header bugs may generally be avoided using | |
4524 | @command{fixincludes}, but bugs or deficiencies in libraries and the | |
4525 | operating system may still cause problems. | |
4526 | ||
4527 | Support for older systems as targets for cross-compilation is less | |
4528 | problematic than support for them as hosts for GCC; if an enthusiast | |
4529 | wishes to make such a target work again (including resurrecting any of | |
80521187 | 4530 | the targets that never worked with GCC 2, starting from the last |
c7bdf0a6 ZW |
4531 | version before they were removed), patches |
4532 | @uref{../contribute.html,,following the usual requirements} would be | |
4533 | likely to be accepted, since they should not affect the support for more | |
4534 | modern targets. | |
f9047ed3 JM |
4535 | |
4536 | For some systems, old versions of GNU binutils may also be useful, | |
021c4bfd | 4537 | and are available from @file{pub/binutils/old-releases} on |
4eb3e795 | 4538 | @uref{http://sourceware.org/mirrors.html,,sourceware.org mirror sites}. |
f9047ed3 JM |
4539 | |
4540 | Some of the information on specific systems above relates to | |
4541 | such older systems, but much of the information | |
4542 | about GCC on such systems (which may no longer be applicable to | |
f42974dc | 4543 | current GCC) is to be found in the GCC texinfo manual. |
f9047ed3 | 4544 | |
f42974dc | 4545 | @html |
b8db17af | 4546 | <hr /> |
f42974dc | 4547 | @end html |
d8fcd085 | 4548 | @heading @anchor{elf}all ELF targets (SVR4, Solaris 2, etc.) |
f42974dc | 4549 | |
38209993 LG |
4550 | C++ support is significantly better on ELF targets if you use the |
4551 | @uref{./configure.html#with-gnu-ld,,GNU linker}; duplicate copies of | |
4552 | inlines, vtables and template instantiations will be discarded | |
4553 | automatically. | |
f42974dc DW |
4554 | |
4555 | ||
4556 | @html | |
b8db17af | 4557 | <hr /> |
f42974dc DW |
4558 | <p> |
4559 | @end html | |
4560 | @ifhtml | |
4561 | @uref{./index.html,,Return to the GCC Installation page} | |
4562 | @end ifhtml | |
4563 | @end ifset | |
4564 | ||
73e2155a JM |
4565 | @c ***Old documentation****************************************************** |
4566 | @ifset oldhtml | |
4567 | @include install-old.texi | |
4568 | @html | |
b8db17af | 4569 | <hr /> |
73e2155a JM |
4570 | <p> |
4571 | @end html | |
4572 | @ifhtml | |
4573 | @uref{./index.html,,Return to the GCC Installation page} | |
4574 | @end ifhtml | |
4575 | @end ifset | |
4576 | ||
aed5964b JM |
4577 | @c ***GFDL******************************************************************** |
4578 | @ifset gfdlhtml | |
4579 | @include fdl.texi | |
4580 | @html | |
b8db17af | 4581 | <hr /> |
aed5964b JM |
4582 | <p> |
4583 | @end html | |
4584 | @ifhtml | |
4585 | @uref{./index.html,,Return to the GCC Installation page} | |
4586 | @end ifhtml | |
4587 | @end ifset | |
4588 | ||
f42974dc DW |
4589 | @c *************************************************************************** |
4590 | @c Part 6 The End of the Document | |
4591 | @ifinfo | |
4592 | @comment node-name, next, previous, up | |
aed5964b | 4593 | @node Concept Index, , GNU Free Documentation License, Top |
f42974dc DW |
4594 | @end ifinfo |
4595 | ||
4596 | @ifinfo | |
4597 | @unnumbered Concept Index | |
4598 | ||
4599 | @printindex cp | |
4600 | ||
4601 | @contents | |
4602 | @end ifinfo | |
4603 | @bye |