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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 | ||
10 | @c Specify title for specific html page | |
11 | @ifset indexhtml | |
12 | @settitle Installing GCC | |
13 | @end ifset | |
14 | @ifset specifichtml | |
15 | @settitle Host/Target specific installation notes for GCC | |
16 | @end ifset | |
67b1fbb9 KG |
17 | @ifset prerequisiteshtml |
18 | @settitle Prerequisites for GCC | |
19 | @end ifset | |
f42974dc DW |
20 | @ifset downloadhtml |
21 | @settitle Downloading GCC | |
22 | @end ifset | |
23 | @ifset configurehtml | |
24 | @settitle Installing GCC: Configuration | |
25 | @end ifset | |
26 | @ifset buildhtml | |
27 | @settitle Installing GCC: Building | |
28 | @end ifset | |
29 | @ifset testhtml | |
30 | @settitle Installing GCC: Testing | |
31 | @end ifset | |
32 | @ifset finalinstallhtml | |
33 | @settitle Installing GCC: Final installation | |
34 | @end ifset | |
35 | @ifset binarieshtml | |
36 | @settitle Installing GCC: Binaries | |
37 | @end ifset | |
73e2155a JM |
38 | @ifset oldhtml |
39 | @settitle Installing GCC: Old documentation | |
40 | @end ifset | |
aed5964b JM |
41 | @ifset gfdlhtml |
42 | @settitle Installing GCC: GNU Free Documentation License | |
43 | @end ifset | |
f42974dc | 44 | |
aed5964b | 45 | @c Copyright (C) 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
d7f755c3 | 46 | @c 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. |
f42974dc DW |
47 | @c *** Converted to texinfo by Dean Wakerley, dean@wakerley.com |
48 | ||
d7f755c3 PB |
49 | @c IMPORTANT: whenever you modify this file, run `install.texi2html' to |
50 | @c test the generation of HTML documents for the gcc.gnu.org web pages. | |
51 | @c | |
52 | @c Do not use @footnote{} in this file as it breaks install.texi2html! | |
53 | ||
f42974dc DW |
54 | @c Include everything if we're not making html |
55 | @ifnothtml | |
56 | @set indexhtml | |
57 | @set specifichtml | |
67b1fbb9 | 58 | @set prerequisiteshtml |
f42974dc DW |
59 | @set downloadhtml |
60 | @set configurehtml | |
61 | @set buildhtml | |
62 | @set testhtml | |
63 | @set finalinstallhtml | |
64 | @set binarieshtml | |
73e2155a | 65 | @set oldhtml |
aed5964b | 66 | @set gfdlhtml |
f42974dc DW |
67 | @end ifnothtml |
68 | ||
69 | @c Part 2 Summary Description and Copyright | |
bdefb2ab | 70 | @copying |
aed5964b | 71 | Copyright @copyright{} 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
d7f755c3 | 72 | 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc. |
aed5964b JM |
73 | @sp 1 |
74 | Permission is granted to copy, distribute and/or modify this document | |
b3a8389d | 75 | under the terms of the GNU Free Documentation License, Version 1.2 or |
aed5964b JM |
76 | any later version published by the Free Software Foundation; with no |
77 | Invariant Sections, the Front-Cover texts being (a) (see below), and | |
78 | with the Back-Cover Texts being (b) (see below). A copy of the | |
79 | license is included in the section entitled ``@uref{./gfdl.html,,GNU | |
80 | Free Documentation License}''. | |
81 | ||
82 | (a) The FSF's Front-Cover Text is: | |
83 | ||
84 | A GNU Manual | |
85 | ||
86 | (b) The FSF's Back-Cover Text is: | |
87 | ||
88 | You have freedom to copy and modify this GNU Manual, like GNU | |
89 | software. Copies published by the Free Software Foundation raise | |
90 | funds for GNU development. | |
bdefb2ab | 91 | @end copying |
f42974dc | 92 | @ifinfo |
bdefb2ab | 93 | @insertcopying |
f42974dc | 94 | @end ifinfo |
c3cb54c6 | 95 | @dircategory Software development |
802f6d4b JM |
96 | @direntry |
97 | * gccinstall: (gccinstall). Installing the GNU Compiler Collection. | |
98 | @end direntry | |
f42974dc DW |
99 | |
100 | @c Part 3 Titlepage and Copyright | |
101 | @titlepage | |
102 | @sp 10 | |
103 | @comment The title is printed in a large font. | |
ef88b07d | 104 | @center @titlefont{Installing GCC} |
f42974dc DW |
105 | |
106 | @c The following two commands start the copyright page. | |
107 | @page | |
ef88b07d | 108 | @vskip 0pt plus 1filll |
bdefb2ab | 109 | @insertcopying |
f42974dc DW |
110 | @end titlepage |
111 | ||
112 | @c Part 4 Top node and Master Menu | |
113 | @ifinfo | |
114 | @node Top, , , (dir) | |
115 | @comment node-name, next, Previous, up | |
116 | ||
117 | @menu | |
118 | * Installing GCC:: This document describes the generic installation | |
119 | procedure for GCC as well as detailing some target | |
f9047ed3 | 120 | specific installation instructions. |
f42974dc DW |
121 | |
122 | * Specific:: Host/target specific installation notes for GCC. | |
123 | * Binaries:: Where to get pre-compiled binaries. | |
124 | ||
73e2155a JM |
125 | * Old:: Old installation documentation. |
126 | ||
aed5964b | 127 | * GNU Free Documentation License:: How you can copy and share this manual. |
f42974dc DW |
128 | * Concept Index:: This index has two entries. |
129 | @end menu | |
130 | @end ifinfo | |
131 | ||
132 | @c Part 5 The Body of the Document | |
133 | @c ***Installing GCC********************************************************** | |
6cfb3f16 | 134 | @ifnothtml |
f42974dc DW |
135 | @comment node-name, next, previous, up |
136 | @node Installing GCC, Binaries, , Top | |
6cfb3f16 | 137 | @end ifnothtml |
f42974dc | 138 | @ifset indexhtml |
f42974dc DW |
139 | @ifnothtml |
140 | @chapter Installing GCC | |
141 | @end ifnothtml | |
142 | ||
143 | The latest version of this document is always available at | |
f9047ed3 | 144 | @uref{http://gcc.gnu.org/install/,,http://gcc.gnu.org/install/}. |
f42974dc DW |
145 | |
146 | This document describes the generic installation procedure for GCC as well | |
f9047ed3 | 147 | as detailing some target specific installation instructions. |
f42974dc | 148 | |
f9047ed3 JM |
149 | GCC includes several components that previously were separate distributions |
150 | with their own installation instructions. This document supersedes all | |
eea81d3e | 151 | package specific installation instructions. |
f42974dc | 152 | |
f9047ed3 | 153 | @emph{Before} starting the build/install procedure please check the |
f42974dc | 154 | @ifnothtml |
eea81d3e | 155 | @ref{Specific, host/target specific installation notes}. |
f42974dc | 156 | @end ifnothtml |
c009f01f | 157 | @ifhtml |
f9047ed3 | 158 | @uref{specific.html,,host/target specific installation notes}. |
c009f01f | 159 | @end ifhtml |
f9047ed3 | 160 | We recommend you browse the entire generic installation instructions before |
f42974dc DW |
161 | you proceed. |
162 | ||
c009f01f | 163 | Lists of successful builds for released versions of GCC are |
daf2f129 | 164 | available at @uref{http://gcc.gnu.org/buildstat.html}. |
c009f01f JJ |
165 | These lists are updated as new information becomes available. |
166 | ||
f9047ed3 | 167 | The installation procedure itself is broken into five steps. |
f42974dc DW |
168 | |
169 | @ifinfo | |
170 | @menu | |
67b1fbb9 | 171 | * Prerequisites:: |
f42974dc DW |
172 | * Downloading the source:: |
173 | * Configuration:: | |
174 | * Building:: | |
175 | * Testing:: (optional) | |
176 | * Final install:: | |
177 | @end menu | |
178 | @end ifinfo | |
c009f01f | 179 | @ifhtml |
f42974dc | 180 | @enumerate |
f9047ed3 | 181 | @item |
67b1fbb9 KG |
182 | @uref{prerequisites.html,,Prerequisites} |
183 | @item | |
f42974dc | 184 | @uref{download.html,,Downloading the source} |
f42974dc | 185 | @item |
f9047ed3 JM |
186 | @uref{configure.html,,Configuration} |
187 | @item | |
188 | @uref{build.html,,Building} | |
189 | @item | |
190 | @uref{test.html,,Testing} (optional) | |
f42974dc DW |
191 | @item |
192 | @uref{finalinstall.html,,Final install} | |
193 | @end enumerate | |
c009f01f | 194 | @end ifhtml |
f42974dc | 195 | |
38209993 | 196 | Please note that GCC does not support @samp{make uninstall} and probably |
f9047ed3 | 197 | won't do so in the near future as this would open a can of worms. Instead, |
f42974dc | 198 | we suggest that you install GCC into a directory of its own and simply |
38209993 | 199 | remove that directory when you do not need that specific version of GCC |
eea81d3e RO |
200 | any longer, and, if shared libraries are installed there as well, no |
201 | more binaries exist that use them. | |
f42974dc | 202 | |
73e2155a JM |
203 | @ifhtml |
204 | There are also some @uref{old.html,,old installation instructions}, | |
205 | which are mostly obsolete but still contain some information which has | |
206 | not yet been merged into the main part of this manual. | |
207 | @end ifhtml | |
208 | ||
f42974dc | 209 | @html |
b8db17af | 210 | <hr /> |
f42974dc DW |
211 | <p> |
212 | @end html | |
213 | @ifhtml | |
214 | @uref{./index.html,,Return to the GCC Installation page} | |
aed5964b | 215 | |
bdefb2ab | 216 | @insertcopying |
f42974dc DW |
217 | @end ifhtml |
218 | @end ifset | |
219 | ||
67b1fbb9 KG |
220 | @c ***Prerequisites************************************************** |
221 | @ifnothtml | |
222 | @comment node-name, next, previous, up | |
223 | @node Prerequisites, Downloading the source, , Installing GCC | |
224 | @end ifnothtml | |
225 | @ifset prerequisiteshtml | |
226 | @ifnothtml | |
227 | @chapter Prerequisites | |
228 | @end ifnothtml | |
229 | @cindex Prerequisites | |
230 | ||
231 | GCC requires that various tools and packages be available for use in the | |
232 | build procedure. Modifying GCC sources requires additional tools | |
233 | described below. | |
234 | ||
235 | @heading Tools/packages necessary for building GCC | |
236 | @table @asis | |
237 | @item ISO C90 compiler | |
80521187 | 238 | Necessary to bootstrap GCC, although versions of GCC prior |
67b1fbb9 KG |
239 | to 3.4 also allow bootstrapping with a traditional (K&R) C compiler. |
240 | ||
80521187 | 241 | To build all languages in a cross-compiler or other configuration where |
67b1fbb9 KG |
242 | 3-stage bootstrap is not performed, you need to start with an existing |
243 | GCC binary (version 2.95 or later) because source code for language | |
244 | frontends other than C might use GCC extensions. | |
245 | ||
246 | @item GNAT | |
247 | ||
248 | In order to build the Ada compiler (GNAT) you must already have GNAT | |
249 | installed because portions of the Ada frontend are written in Ada (with | |
250 | GNAT extensions.) Refer to the Ada installation instructions for more | |
251 | specific information. | |
252 | ||
253 | @item A ``working'' POSIX compatible shell, or GNU bash | |
254 | ||
255 | Necessary when running @command{configure} because some | |
256 | @command{/bin/sh} shells have bugs and may crash when configuring the | |
80521187 GP |
257 | target libraries. In other cases, @command{/bin/sh} or @command{ksh} |
258 | have disastrous corner-case performance problems. This | |
67b1fbb9 KG |
259 | can cause target @command{configure} runs to literally take days to |
260 | complete in some cases. | |
261 | ||
262 | So on some platforms @command{/bin/ksh} is sufficient, on others it | |
263 | isn't. See the host/target specific instructions for your platform, or | |
264 | use @command{bash} to be sure. Then set @env{CONFIG_SHELL} in your | |
265 | environment to your ``good'' shell prior to running | |
266 | @command{configure}/@command{make}. | |
267 | ||
daf2f129 | 268 | @command{zsh} is not a fully compliant POSIX shell and will not |
8a36672b | 269 | work when configuring GCC@. |
1b49d06f | 270 | |
67b1fbb9 KG |
271 | @item GNU binutils |
272 | ||
273 | Necessary in some circumstances, optional in others. See the | |
274 | host/target specific instructions for your platform for the exact | |
275 | requirements. | |
276 | ||
277 | @item gzip version 1.2.4 (or later) or | |
278 | @itemx bzip2 version 1.0.2 (or later) | |
279 | ||
280 | Necessary to uncompress GCC @command{tar} files when source code is | |
281 | obtained via FTP mirror sites. | |
282 | ||
e158a5fb MM |
283 | @item GNU make version 3.79.1 (or later) |
284 | ||
8a36672b | 285 | You must have GNU make installed to build GCC@. |
e158a5fb | 286 | |
f44a5ab6 | 287 | @item GNU tar version 1.14 (or later) |
67b1fbb9 KG |
288 | |
289 | Necessary (only on some platforms) to untar the source code. Many | |
290 | systems' @command{tar} programs will also work, only try GNU | |
291 | @command{tar} if you have problems. | |
292 | ||
e48d66a9 | 293 | @item GNU Multiple Precision Library (GMP) version 4.1 (or later) |
bda4d063 | 294 | |
e48d66a9 | 295 | Necessary to build the Fortran frontend. If you do not have it |
bda4d063 TS |
296 | installed in your library search path, you will have to configure with |
297 | the @option{--with-gmp} or @option{--with-gmp-dir} configure option. | |
298 | ||
e48d66a9 | 299 | @item MPFR Library version 2.2 (or later) |
bebf829d PB |
300 | |
301 | Necessary to build the Fortran frontend. It can be downloaded from | |
e48d66a9 SK |
302 | @uref{http://www.mpfr.org/}. The version of MPFR that is bundled with |
303 | GMP 4.1.x contains numerous bugs. Although gfortran will appear | |
baf2c258 | 304 | to function with the buggy versions of MPFR, there are a few gfortran bugs |
e48d66a9 SK |
305 | that will not be fixed to use this version. It is strongly |
306 | recommended to upgrade to at least MPFR version 2.2. | |
bebf829d PB |
307 | |
308 | The @option{--with-mpfr} or @option{--with-mpfr-dir} configure option should | |
309 | be used if your MPFR Library is not installed in your library search path. | |
310 | ||
02809848 | 311 | @item @command{jar}, or InfoZIP (@command{zip} and @command{unzip}) |
b52be2c8 TT |
312 | |
313 | Necessary to build libgcj, the GCJ runtime. | |
314 | ||
67b1fbb9 KG |
315 | @end table |
316 | ||
317 | ||
318 | @heading Tools/packages necessary for modifying GCC | |
319 | @table @asis | |
0dce8934 | 320 | @item autoconf versions 2.13 and 2.59 |
67b1fbb9 KG |
321 | @itemx GNU m4 version 1.4 (or later) |
322 | ||
89acbae0 | 323 | Necessary when modifying @file{configure.ac}, @file{aclocal.m4}, etc.@: |
4f3ce03f | 324 | to regenerate @file{configure} and @file{config.in} files. Most |
5d75ba94 NN |
325 | directories require autoconf 2.59 (exactly), but the toplevel |
326 | still requires autoconf 2.13 (exactly). | |
67b1fbb9 | 327 | |
ae8cacc6 | 328 | @item automake versions 1.9.3 |
67b1fbb9 KG |
329 | |
330 | Necessary when modifying a @file{Makefile.am} file to regenerate its | |
ce5c1cf3 KC |
331 | associated @file{Makefile.in}. |
332 | ||
333 | Much of GCC does not use automake, so directly edit the @file{Makefile.in} | |
334 | file. Specifically this applies to the @file{gcc}, @file{intl}, | |
078e3ffe PB |
335 | @file{libcpp}, @file{libiberty}, @file{libobjc} directories as well |
336 | as any of their subdirectories. | |
ce5c1cf3 | 337 | |
ae8cacc6 KC |
338 | For directories that use automake, GCC requires the latest release in |
339 | the 1.9.x series, which is currently 1.9.3. When regenerating a directory | |
340 | to a newer version, please update all the directories using an older 1.9.x | |
341 | to the latest released version. | |
ccfca4ae | 342 | |
4b794eaf | 343 | @item gettext version 0.14.5 (or later) |
4f3ce03f JM |
344 | |
345 | Needed to regenerate @file{gcc.pot}. | |
67b1fbb9 KG |
346 | |
347 | @item gperf version 2.7.2 (or later) | |
348 | ||
349 | Necessary when modifying @command{gperf} input files, e.g.@: | |
350 | @file{gcc/cp/cfns.gperf} to regenerate its associated header file, e.g.@: | |
351 | @file{gcc/cp/cfns.h}. | |
352 | ||
80521187 GP |
353 | @item DejaGnu 1.4.4 |
354 | @itemx Expect | |
355 | @itemx Tcl | |
67b1fbb9 | 356 | |
80521187 | 357 | Necessary to run the GCC testsuite; see the section on testing for details. |
67b1fbb9 KG |
358 | |
359 | @item autogen version 5.5.4 (or later) and | |
360 | @itemx guile version 1.4.1 (or later) | |
361 | ||
362 | Necessary to regenerate @file{fixinc/fixincl.x} from | |
363 | @file{fixinc/inclhack.def} and @file{fixinc/*.tpl}. | |
364 | ||
80521187 | 365 | Necessary to run @samp{make check} for @file{fixinc}. |
67b1fbb9 | 366 | |
ce5c1cf3 | 367 | Necessary to regenerate the top level @file{Makefile.in} file from |
67b1fbb9 KG |
368 | @file{Makefile.tpl} and @file{Makefile.def}. |
369 | ||
370 | @item GNU Bison version 1.28 (or later) | |
371 | Berkeley @command{yacc} (@command{byacc}) is also reported to work other | |
80521187 | 372 | than for GCJ. |
67b1fbb9 KG |
373 | |
374 | Necessary when modifying @file{*.y} files. | |
375 | ||
376 | Necessary to build GCC during development because the generated output | |
80521187 | 377 | files are not included in the SVN repository. They are included in |
67b1fbb9 KG |
378 | releases. |
379 | ||
380 | @item Flex version 2.5.4 (or later) | |
381 | ||
382 | Necessary when modifying @file{*.l} files. | |
383 | ||
384 | Necessary to build GCC during development because the generated output | |
80521187 | 385 | files are not included in the SVN repository. They are included in |
67b1fbb9 KG |
386 | releases. |
387 | ||
1a598a97 | 388 | @item Texinfo version 4.4 (or later) |
67b1fbb9 KG |
389 | |
390 | Necessary for running @command{makeinfo} when modifying @file{*.texi} | |
391 | files to test your changes. | |
392 | ||
393 | Necessary to build GCC documentation during development because the | |
80521187 | 394 | generated output files are not included in the SVN repository. They are |
67b1fbb9 KG |
395 | included in releases. |
396 | ||
397 | @item @TeX{} (any working version) | |
398 | ||
399 | Necessary for running @command{texi2dvi}, used when running | |
400 | @command{make dvi} to create DVI files. | |
401 | ||
80521187 GP |
402 | @item SVN (any version) |
403 | @itemx SSH (any version) | |
67b1fbb9 | 404 | |
80521187 | 405 | Necessary to access the SVN repository. Public releases and weekly |
8a36672b | 406 | snapshots of the development sources are also available via FTP@. |
67b1fbb9 | 407 | |
80521187 | 408 | @item Perl version 5.6.1 (or later) |
67b1fbb9 KG |
409 | |
410 | Necessary when regenerating @file{Makefile} dependencies in libiberty. | |
4f3ce03f JM |
411 | Necessary when regenerating @file{libiberty/functions.texi}. |
412 | Necessary when generating manpages from Texinfo manuals. | |
a9fdd472 GK |
413 | Necessary when targetting Darwin, building libstdc++, |
414 | and not using @option{--disable-symvers}. | |
80521187 | 415 | Used by various scripts to generate some files included in SVN (mainly |
4f3ce03f | 416 | Unicode-related and rarely changing) from source tables. |
67b1fbb9 KG |
417 | |
418 | @item GNU diffutils version 2.7 (or later) | |
419 | ||
80521187 | 420 | Useful when submitting patches for the GCC source code. |
67b1fbb9 KG |
421 | |
422 | @item patch version 2.5.4 (or later) | |
423 | ||
424 | Necessary when applying patches, created with @command{diff}, to one's | |
425 | own sources. | |
426 | ||
427 | @end table | |
428 | ||
429 | @html | |
430 | <hr /> | |
431 | <p> | |
432 | @end html | |
433 | @ifhtml | |
434 | @uref{./index.html,,Return to the GCC Installation page} | |
435 | @end ifhtml | |
436 | @end ifset | |
437 | ||
f42974dc | 438 | @c ***Downloading the source************************************************** |
6cfb3f16 | 439 | @ifnothtml |
f42974dc | 440 | @comment node-name, next, previous, up |
67b1fbb9 | 441 | @node Downloading the source, Configuration, Prerequisites, Installing GCC |
6cfb3f16 | 442 | @end ifnothtml |
f42974dc | 443 | @ifset downloadhtml |
f42974dc DW |
444 | @ifnothtml |
445 | @chapter Downloading GCC | |
446 | @end ifnothtml | |
447 | @cindex Downloading GCC | |
448 | @cindex Downloading the Source | |
449 | ||
80521187 | 450 | GCC is distributed via @uref{http://gcc.gnu.org/svn.html,,SVN} and FTP |
eea81d3e | 451 | tarballs compressed with @command{gzip} or |
6cfb3f16 | 452 | @command{bzip2}. It is possible to download a full distribution or specific |
f42974dc DW |
453 | components. |
454 | ||
962e6e00 | 455 | Please refer to the @uref{http://gcc.gnu.org/releases.html,,releases web page} |
161d7b59 | 456 | for information on how to obtain GCC@. |
f42974dc | 457 | |
6de9cd9a | 458 | The full distribution includes the C, C++, Objective-C, Fortran 77, Fortran |
25f710ba | 459 | (in case of GCC 4.0 and later), Java, and Ada (in case of GCC 3.1 and later) |
6de9cd9a DN |
460 | compilers. The full distribution also includes runtime libraries for C++, |
461 | Objective-C, Fortran 77, Fortran, and Java. In GCC 3.0 and later versions, | |
462 | GNU compiler testsuites are also included in the full distribution. | |
f42974dc DW |
463 | |
464 | If you choose to download specific components, you must download the core | |
eea81d3e | 465 | GCC distribution plus any language specific distributions you wish to |
6c0a4eab | 466 | use. The core distribution includes the C language front end as well as the |
767094dd | 467 | shared components. Each language has a tarball which includes the language |
6c0a4eab | 468 | front end as well as the language runtime (when appropriate). |
f42974dc DW |
469 | |
470 | Unpack the core distribution as well as any language specific | |
471 | distributions in the same directory. | |
472 | ||
473 | If you also intend to build binutils (either to upgrade an existing | |
474 | installation or for use in place of the corresponding tools of your | |
475 | OS), unpack the binutils distribution either in the same directory or | |
476 | a separate one. In the latter case, add symbolic links to any | |
477 | components of the binutils you intend to build alongside the compiler | |
6cfb3f16 JM |
478 | (@file{bfd}, @file{binutils}, @file{gas}, @file{gprof}, @file{ld}, |
479 | @file{opcodes}, @dots{}) to the directory containing the GCC sources. | |
f42974dc DW |
480 | |
481 | @html | |
b8db17af | 482 | <hr /> |
f42974dc DW |
483 | <p> |
484 | @end html | |
485 | @ifhtml | |
486 | @uref{./index.html,,Return to the GCC Installation page} | |
487 | @end ifhtml | |
488 | @end ifset | |
489 | ||
490 | @c ***Configuration*********************************************************** | |
6cfb3f16 | 491 | @ifnothtml |
f42974dc DW |
492 | @comment node-name, next, previous, up |
493 | @node Configuration, Building, Downloading the source, Installing GCC | |
6cfb3f16 | 494 | @end ifnothtml |
f42974dc | 495 | @ifset configurehtml |
f42974dc DW |
496 | @ifnothtml |
497 | @chapter Installing GCC: Configuration | |
498 | @end ifnothtml | |
499 | @cindex Configuration | |
500 | @cindex Installing GCC: Configuration | |
501 | ||
502 | Like most GNU software, GCC must be configured before it can be built. | |
503 | This document describes the recommended configuration procedure | |
504 | for both native and cross targets. | |
505 | ||
38209993 LG |
506 | We use @var{srcdir} to refer to the toplevel source directory for |
507 | GCC; we use @var{objdir} to refer to the toplevel build/object directory. | |
508 | ||
80521187 | 509 | If you obtained the sources via SVN, @var{srcdir} must refer to the top |
38209993 LG |
510 | @file{gcc} directory, the one where the @file{MAINTAINERS} can be found, |
511 | and not its @file{gcc} subdirectory, otherwise the build will fail. | |
f42974dc | 512 | |
b4b0fb02 RO |
513 | If either @var{srcdir} or @var{objdir} is located on an automounted NFS |
514 | file system, the shell's built-in @command{pwd} command will return | |
515 | temporary pathnames. Using these can lead to various sorts of build | |
516 | problems. To avoid this issue, set the @env{PWDCMD} environment | |
517 | variable to an automounter-aware @command{pwd} command, e.g., | |
7ba4ca63 | 518 | @command{pawd} or @samp{amq -w}, during the configuration and build |
b4b0fb02 RO |
519 | phases. |
520 | ||
102b60d1 GP |
521 | First, we @strong{highly} recommend that GCC be built into a |
522 | separate directory than the sources which does @strong{not} reside | |
523 | within the source tree. This is how we generally build GCC; building | |
524 | where @var{srcdir} == @var{objdir} should still work, but doesn't | |
525 | get extensive testing; building where @var{objdir} is a subdirectory | |
526 | of @var{srcdir} is unsupported. | |
f42974dc | 527 | |
eea81d3e | 528 | If you have previously built GCC in the same directory for a |
f85b8d1a | 529 | different target machine, do @samp{make distclean} to delete all files |
377dfc82 GP |
530 | that might be invalid. One of the files this deletes is @file{Makefile}; |
531 | if @samp{make distclean} complains that @file{Makefile} does not exist | |
532 | or issues a message like ``don't know how to make distclean'' it probably | |
533 | means that the directory is already suitably clean. However, with the | |
534 | recommended method of building in a separate @var{objdir}, you should | |
535 | simply use a different @var{objdir} for each target. | |
f85b8d1a | 536 | |
38209993 LG |
537 | Second, when configuring a native system, either @command{cc} or |
538 | @command{gcc} must be in your path or you must set @env{CC} in | |
df002c7d DE |
539 | your environment before running configure. Otherwise the configuration |
540 | scripts may fail. | |
f42974dc | 541 | |
cc11cc9b | 542 | @ignore |
eea81d3e RO |
543 | Note that the bootstrap compiler and the resulting GCC must be link |
544 | compatible, else the bootstrap will fail with linker errors about | |
545 | incompatible object file formats. Several multilibed targets are | |
e69aa433 GP |
546 | affected by this requirement, see |
547 | @ifnothtml | |
548 | @ref{Specific, host/target specific installation notes}. | |
549 | @end ifnothtml | |
c009f01f | 550 | @ifhtml |
e69aa433 | 551 | @uref{specific.html,,host/target specific installation notes}. |
c009f01f | 552 | @end ifhtml |
cc11cc9b | 553 | @end ignore |
eea81d3e | 554 | |
f42974dc DW |
555 | To configure GCC: |
556 | ||
3ab51846 | 557 | @smallexample |
38209993 LG |
558 | % mkdir @var{objdir} |
559 | % cd @var{objdir} | |
eea81d3e | 560 | % @var{srcdir}/configure [@var{options}] [@var{target}] |
3ab51846 | 561 | @end smallexample |
f42974dc DW |
562 | |
563 | ||
ef88b07d | 564 | @heading Target specification |
f42974dc DW |
565 | @itemize @bullet |
566 | @item | |
38209993 | 567 | GCC has code to correctly determine the correct value for @var{target} |
f9047ed3 | 568 | for nearly all native systems. Therefore, we highly recommend you not |
f42974dc DW |
569 | provide a configure target when configuring a native compiler. |
570 | ||
571 | @item | |
6cfb3f16 | 572 | @var{target} must be specified as @option{--target=@var{target}} |
f9047ed3 | 573 | when configuring a cross compiler; examples of valid targets would be |
a4a4b1d3 | 574 | m68k-coff, sh-elf, etc. |
f42974dc DW |
575 | |
576 | @item | |
6cfb3f16 | 577 | Specifying just @var{target} instead of @option{--target=@var{target}} |
38209993 | 578 | implies that the host defaults to @var{target}. |
f42974dc DW |
579 | @end itemize |
580 | ||
581 | ||
ef88b07d | 582 | @heading Options specification |
f42974dc | 583 | |
ef88b07d | 584 | Use @var{options} to override several configure time options for |
7ba4ca63 | 585 | GCC@. A list of supported @var{options} follows; @samp{configure |
80f9249a JM |
586 | --help} may list other options, but those not listed below may not |
587 | work and should not normally be used. | |
f42974dc | 588 | |
c1c3bb0c ME |
589 | Note that each @option{--enable} option has a corresponding |
590 | @option{--disable} option and that each @option{--with} option has a | |
591 | corresponding @option{--without} option. | |
592 | ||
ef88b07d JM |
593 | @table @code |
594 | @item --prefix=@var{dirname} | |
595 | Specify the toplevel installation | |
f42974dc DW |
596 | directory. This is the recommended way to install the tools into a directory |
597 | other than the default. The toplevel installation directory defaults to | |
6cfb3f16 | 598 | @file{/usr/local}. |
f42974dc | 599 | |
38209993 | 600 | We @strong{highly} recommend against @var{dirname} being the same or a |
a7582c8c BE |
601 | subdirectory of @var{objdir} or vice versa. If specifying a directory |
602 | beneath a user's home directory tree, some shells will not expand | |
603 | @var{dirname} correctly if it contains the @samp{~} metacharacter; use | |
604 | @env{$HOME} instead. | |
f42974dc | 605 | |
8e5f33ff GK |
606 | The following standard @command{autoconf} options are supported. Normally you |
607 | should not need to use these options. | |
ef88b07d | 608 | @table @code |
ab130aa5 JM |
609 | @item --exec-prefix=@var{dirname} |
610 | Specify the toplevel installation directory for architecture-dependent | |
611 | files. The default is @file{@var{prefix}}. | |
612 | ||
613 | @item --bindir=@var{dirname} | |
614 | Specify the installation directory for the executables called by users | |
615 | (such as @command{gcc} and @command{g++}). The default is | |
616 | @file{@var{exec-prefix}/bin}. | |
617 | ||
618 | @item --libdir=@var{dirname} | |
619 | Specify the installation directory for object code libraries and | |
8e5f33ff GK |
620 | internal data files of GCC@. The default is @file{@var{exec-prefix}/lib}. |
621 | ||
622 | @item --libexecdir=@var{dirname} | |
623 | Specify the installation directory for internal executables of GCC@. | |
624 | The default is @file{@var{exec-prefix}/libexec}. | |
ab130aa5 JM |
625 | |
626 | @item --with-slibdir=@var{dirname} | |
627 | Specify the installation directory for the shared libgcc library. The | |
628 | default is @file{@var{libdir}}. | |
629 | ||
630 | @item --infodir=@var{dirname} | |
631 | Specify the installation directory for documentation in info format. | |
632 | The default is @file{@var{prefix}/info}. | |
633 | ||
8567c70f TT |
634 | @item --datadir=@var{dirname} |
635 | Specify the installation directory for some architecture-independent | |
636 | data files referenced by GCC@. The default is @file{@var{prefix}/share}. | |
637 | ||
ab130aa5 JM |
638 | @item --mandir=@var{dirname} |
639 | Specify the installation directory for manual pages. The default is | |
640 | @file{@var{prefix}/man}. (Note that the manual pages are only extracts from | |
8e9a4a45 | 641 | the full GCC manuals, which are provided in Texinfo format. The manpages |
ab130aa5 JM |
642 | are derived by an automatic conversion process from parts of the full |
643 | manual.) | |
644 | ||
ef88b07d JM |
645 | @item --with-gxx-include-dir=@var{dirname} |
646 | Specify | |
eea81d3e | 647 | the installation directory for G++ header files. The default is |
e0b24bce | 648 | @file{@var{prefix}/include/c++/@var{version}}. |
ecb7d6b3 | 649 | |
ef88b07d | 650 | @end table |
f42974dc | 651 | |
b21d216c AF |
652 | @item --program-prefix=@var{prefix} |
653 | GCC supports some transformations of the names of its programs when | |
8a36672b JM |
654 | installing them. This option prepends @var{prefix} to the names of |
655 | programs to install in @var{bindir} (see above). For example, specifying | |
b21d216c AF |
656 | @option{--program-prefix=foo-} would result in @samp{gcc} |
657 | being installed as @file{/usr/local/bin/foo-gcc}. | |
658 | ||
659 | @item --program-suffix=@var{suffix} | |
660 | Appends @var{suffix} to the names of programs to install in @var{bindir} | |
8a36672b | 661 | (see above). For example, specifying @option{--program-suffix=-3.1} |
b21d216c AF |
662 | would result in @samp{gcc} being installed as |
663 | @file{/usr/local/bin/gcc-3.1}. | |
664 | ||
665 | @item --program-transform-name=@var{pattern} | |
666 | Applies the @samp{sed} script @var{pattern} to be applied to the names | |
8a36672b | 667 | of programs to install in @var{bindir} (see above). @var{pattern} has to |
b21d216c | 668 | consist of one or more basic @samp{sed} editing commands, separated by |
8a36672b | 669 | semicolons. For example, if you want the @samp{gcc} program name to be |
b21d216c AF |
670 | transformed to the installed program @file{/usr/local/bin/myowngcc} and |
671 | the @samp{g++} program name to be transformed to | |
672 | @file{/usr/local/bin/gspecial++} without changing other program names, | |
673 | you could use the pattern | |
674 | @option{--program-transform-name='s/^gcc$/myowngcc/; s/^g++$/gspecial++/'} | |
675 | to achieve this effect. | |
676 | ||
677 | All three options can be combined and used together, resulting in more | |
8a36672b | 678 | complex conversion patterns. As a basic rule, @var{prefix} (and |
b21d216c AF |
679 | @var{suffix}) are prepended (appended) before further transformations |
680 | can happen with a special transformation script @var{pattern}. | |
681 | ||
8c085f6f | 682 | As currently implemented, this option only takes effect for native |
b21d216c | 683 | builds; cross compiler binaries' names are not transformed even when a |
8c085f6f | 684 | transformation is explicitly asked for by one of these options. |
b21d216c AF |
685 | |
686 | For native builds, some of the installed programs are also installed | |
687 | with the target alias in front of their name, as in | |
8a36672b | 688 | @samp{i686-pc-linux-gnu-gcc}. All of the above transformations happen |
78466c0e | 689 | before the target alias is prepended to the name---so, specifying |
b21d216c AF |
690 | @option{--program-prefix=foo-} and @option{program-suffix=-3.1}, the |
691 | resulting binary would be installed as | |
692 | @file{/usr/local/bin/i686-pc-linux-gnu-foo-gcc-3.1}. | |
693 | ||
8ecab453 | 694 | As a last shortcoming, none of the installed Ada programs are |
b21d216c AF |
695 | transformed yet, which will be fixed in some time. |
696 | ||
ef88b07d JM |
697 | @item --with-local-prefix=@var{dirname} |
698 | Specify the | |
6ac48571 JM |
699 | installation directory for local include files. The default is |
700 | @file{/usr/local}. Specify this option if you want the compiler to | |
701 | search directory @file{@var{dirname}/include} for locally installed | |
702 | header files @emph{instead} of @file{/usr/local/include}. | |
703 | ||
704 | You should specify @option{--with-local-prefix} @strong{only} if your | |
705 | site has a different convention (not @file{/usr/local}) for where to put | |
706 | site-specific files. | |
707 | ||
708 | The default value for @option{--with-local-prefix} is @file{/usr/local} | |
709 | regardless of the value of @option{--prefix}. Specifying | |
710 | @option{--prefix} has no effect on which directory GCC searches for | |
711 | local header files. This may seem counterintuitive, but actually it is | |
712 | logical. | |
713 | ||
714 | The purpose of @option{--prefix} is to specify where to @emph{install | |
715 | GCC}. The local header files in @file{/usr/local/include}---if you put | |
161d7b59 | 716 | any in that directory---are not part of GCC@. They are part of other |
6ac48571 JM |
717 | programs---perhaps many others. (GCC installs its own header files in |
718 | another directory which is based on the @option{--prefix} value.) | |
719 | ||
48209ce5 | 720 | Both the local-prefix include directory and the GCC-prefix include |
78466c0e | 721 | directory are part of GCC's ``system include'' directories. Although these |
48209ce5 JDA |
722 | two directories are not fixed, they need to be searched in the proper |
723 | order for the correct processing of the include_next directive. The | |
724 | local-prefix include directory is searched before the GCC-prefix | |
725 | include directory. Another characteristic of system include directories | |
726 | is that pedantic warnings are turned off for headers in these directories. | |
727 | ||
728 | Some autoconf macros add @option{-I @var{directory}} options to the | |
729 | compiler command line, to ensure that directories containing installed | |
730 | packages' headers are searched. When @var{directory} is one of GCC's | |
731 | system include directories, GCC will ignore the option so that system | |
732 | directories continue to be processed in the correct order. This | |
733 | may result in a search order different from what was specified but the | |
734 | directory will still be searched. | |
735 | ||
736 | GCC automatically searches for ordinary libraries using | |
737 | @env{GCC_EXEC_PREFIX}. Thus, when the same installation prefix is | |
738 | used for both GCC and packages, GCC will automatically search for | |
739 | both headers and libraries. This provides a configuration that is | |
740 | easy to use. GCC behaves in a manner similar to that when it is | |
741 | installed as a system compiler in @file{/usr}. | |
742 | ||
743 | Sites that need to install multiple versions of GCC may not want to | |
744 | use the above simple configuration. It is possible to use the | |
745 | @option{--program-prefix}, @option{--program-suffix} and | |
746 | @option{--program-transform-name} options to install multiple versions | |
747 | into a single directory, but it may be simpler to use different prefixes | |
748 | and the @option{--with-local-prefix} option to specify the location of the | |
749 | site-specific files for each version. It will then be necessary for | |
750 | users to specify explicitly the location of local site libraries | |
751 | (e.g., with @env{LIBRARY_PATH}). | |
752 | ||
753 | The same value can be used for both @option{--with-local-prefix} and | |
754 | @option{--prefix} provided it is not @file{/usr}. This can be used | |
755 | to avoid the default search of @file{/usr/local/include}. | |
756 | ||
6ac48571 JM |
757 | @strong{Do not} specify @file{/usr} as the @option{--with-local-prefix}! |
758 | The directory you use for @option{--with-local-prefix} @strong{must not} | |
759 | contain any of the system's standard header files. If it did contain | |
760 | them, certain programs would be miscompiled (including GNU Emacs, on | |
761 | certain targets), because this would override and nullify the header | |
4c64396e | 762 | file corrections made by the @command{fixincludes} script. |
6ac48571 JM |
763 | |
764 | Indications are that people who use this option use it based on mistaken | |
765 | ideas of what it is for. People use it as if it specified where to | |
161d7b59 | 766 | install part of GCC@. Perhaps they make this assumption because |
6ac48571 JM |
767 | installing GCC creates the directory. |
768 | ||
6cfb3f16 | 769 | @item --enable-shared[=@var{package}[,@dots{}]] |
0cb98517 AO |
770 | Build shared versions of libraries, if shared libraries are supported on |
771 | the target platform. Unlike GCC 2.95.x and earlier, shared libraries | |
07659e97 | 772 | are enabled by default on all platforms that support shared libraries. |
0cb98517 AO |
773 | |
774 | If a list of packages is given as an argument, build shared libraries | |
775 | only for the listed packages. For other packages, only static libraries | |
776 | will be built. Package names currently recognized in the GCC tree are | |
777 | @samp{libgcc} (also known as @samp{gcc}), @samp{libstdc++} (not | |
e22df315 | 778 | @samp{libstdc++-v3}), @samp{libffi}, @samp{zlib}, @samp{boehm-gc}, |
07659e97 | 779 | @samp{ada}, @samp{libada}, @samp{libjava} and @samp{libobjc}. |
55c45226 | 780 | Note @samp{libiberty} does not support shared libraries at all. |
0cb98517 AO |
781 | |
782 | Use @option{--disable-shared} to build only static libraries. Note that | |
783 | @option{--disable-shared} does not accept a list of package names as | |
784 | argument, only @option{--enable-shared} does. | |
f42974dc | 785 | |
ef88b07d JM |
786 | @item @anchor{with-gnu-as}--with-gnu-as |
787 | Specify that the compiler should assume that the | |
767094dd | 788 | assembler it finds is the GNU assembler. However, this does not modify |
377dfc82 GP |
789 | the rules to find an assembler and will result in confusion if the |
790 | assembler found is not actually the GNU assembler. (Confusion may also | |
8c26c999 JM |
791 | result if the compiler finds the GNU assembler but has not been |
792 | configured with @option{--with-gnu-as}.) If you have more than one | |
38209993 | 793 | assembler installed on your system, you may want to use this option in |
cc11cc9b PB |
794 | connection with @option{--with-as=@var{pathname}} or |
795 | @option{--with-build-time-tools=@var{pathname}}. | |
38209993 | 796 | |
8c085f6f JJ |
797 | The following systems are the only ones where it makes a difference |
798 | whether you use the GNU assembler. On any other system, | |
799 | @option{--with-gnu-as} has no effect. | |
800 | ||
2ff16718 | 801 | @itemize @bullet |
8c085f6f JJ |
802 | @item @samp{hppa1.0-@var{any}-@var{any}} |
803 | @item @samp{hppa1.1-@var{any}-@var{any}} | |
804 | @item @samp{i386-@var{any}-sysv} | |
8c085f6f JJ |
805 | @item @samp{m68k-bull-sysv} |
806 | @item @samp{m68k-hp-hpux} | |
8c085f6f JJ |
807 | @item @samp{m68000-hp-hpux} |
808 | @item @samp{m68000-att-sysv} | |
8f2afc21 EB |
809 | @item @samp{sparc-sun-solaris2.@var{any}} |
810 | @item @samp{sparc64-@var{any}-solaris2.@var{any}} | |
8c085f6f | 811 | @end itemize |
8c26c999 | 812 | |
8f2afc21 | 813 | On the systems listed above (except for the HP-PA, the SPARC, for ISC on |
82563d35 RS |
814 | the 386, if you use the GNU assembler, you should also use the GNU linker |
815 | (and specify @option{--with-gnu-ld}). | |
8c26c999 | 816 | |
8f2afc21 | 817 | @item @anchor{with-as}--with-as=@var{pathname} |
cc11cc9b PB |
818 | Specify that the compiler should use the assembler pointed to by |
819 | @var{pathname}, rather than the one found by the standard rules to find | |
820 | an assembler, which are: | |
f42974dc DW |
821 | @itemize @bullet |
822 | @item | |
cc11cc9b PB |
823 | Unless GCC is being built with a cross compiler, check the |
824 | @file{@var{libexec}/gcc/@var{target}/@var{version}} directory. | |
825 | @var{libexec} defaults to @file{@var{exec-prefix}/libexec}; | |
826 | @var{exec-prefix} defaults to @var{prefix}, which | |
827 | defaults to @file{/usr/local} unless overridden by the | |
828 | @option{--prefix=@var{pathname}} switch described above. @var{target} | |
829 | is the target system triple, such as @samp{sparc-sun-solaris2.7}, and | |
830 | @var{version} denotes the GCC version, such as 3.0. | |
831 | ||
f42974dc | 832 | @item |
cc11cc9b PB |
833 | If the target system is the same that you are building on, check |
834 | operating system specific directories (e.g.@: @file{/usr/ccs/bin} on | |
250d5688 | 835 | Sun Solaris 2). |
cc11cc9b PB |
836 | |
837 | @item | |
838 | Check in the @env{PATH} for a tool whose name is prefixed by the | |
839 | target system triple. | |
840 | ||
841 | @item | |
842 | Check in the @env{PATH} for a tool whose name is not prefixed by the | |
843 | target system triple, if the host and target system triple are | |
844 | the same (in other words, we use a host tool if it can be used for | |
845 | the target as well). | |
f42974dc | 846 | @end itemize |
cc11cc9b PB |
847 | |
848 | You may want to use @option{--with-as} if no assembler | |
849 | is installed in the directories listed above, or if you have multiple | |
850 | assemblers installed and want to choose one that is not found by the | |
851 | above rules. | |
f42974dc | 852 | |
ef88b07d JM |
853 | @item @anchor{with-gnu-ld}--with-gnu-ld |
854 | Same as @uref{#with-gnu-as,,@option{--with-gnu-as}} | |
8f2afc21 | 855 | but for the linker. |
f42974dc | 856 | |
eea81d3e | 857 | @item --with-ld=@var{pathname} |
8f2afc21 EB |
858 | Same as @uref{#with-as,,@option{--with-as}} |
859 | but for the linker. | |
f42974dc | 860 | |
ef88b07d JM |
861 | @item --with-stabs |
862 | Specify that stabs debugging | |
38209993 LG |
863 | information should be used instead of whatever format the host normally |
864 | uses. Normally GCC uses the same debug format as the host system. | |
f42974dc | 865 | |
8c26c999 JM |
866 | On MIPS based systems and on Alphas, you must specify whether you want |
867 | GCC to create the normal ECOFF debugging format, or to use BSD-style | |
868 | stabs passed through the ECOFF symbol table. The normal ECOFF debug | |
161d7b59 JM |
869 | format cannot fully handle languages other than C@. BSD stabs format can |
870 | handle other languages, but it only works with the GNU debugger GDB@. | |
8c26c999 JM |
871 | |
872 | Normally, GCC uses the ECOFF debugging format by default; if you | |
161d7b59 | 873 | prefer BSD stabs, specify @option{--with-stabs} when you configure GCC@. |
8c26c999 JM |
874 | |
875 | No matter which default you choose when you configure GCC, the user | |
876 | can use the @option{-gcoff} and @option{-gstabs+} options to specify explicitly | |
877 | the debug format for a particular compilation. | |
878 | ||
879 | @option{--with-stabs} is meaningful on the ISC system on the 386, also, if | |
880 | @option{--with-gas} is used. It selects use of stabs debugging | |
881 | information embedded in COFF output. This kind of debugging information | |
882 | supports C++ well; ordinary COFF debugging information does not. | |
883 | ||
884 | @option{--with-stabs} is also meaningful on 386 systems running SVR4. It | |
885 | selects use of stabs debugging information embedded in ELF output. The | |
886 | C++ compiler currently (2.6.0) does not support the DWARF debugging | |
887 | information normally used on 386 SVR4 platforms; stabs provide a | |
888 | workable alternative. This requires gas and gdb, as the normal SVR4 | |
889 | tools can not generate or interpret stabs. | |
890 | ||
eea81d3e | 891 | @item --disable-multilib |
ef88b07d | 892 | Specify that multiple target |
eea81d3e RO |
893 | libraries to support different target variants, calling |
894 | conventions, etc should not be built. The default is to build a | |
895 | predefined set of them. | |
f42974dc | 896 | |
e8515283 DE |
897 | Some targets provide finer-grained control over which multilibs are built |
898 | (e.g., @option{--disable-softfloat}): | |
899 | @table @code | |
e8515283 DE |
900 | @item arc-*-elf* |
901 | biendian. | |
902 | ||
903 | @item arm-*-* | |
904 | fpu, 26bit, underscore, interwork, biendian, nofmult. | |
905 | ||
906 | @item m68*-*-* | |
907 | softfloat, m68881, m68000, m68020. | |
908 | ||
909 | @item mips*-*-* | |
910 | single-float, biendian, softfloat. | |
911 | ||
912 | @item powerpc*-*-*, rs6000*-*-* | |
913 | aix64, pthread, softfloat, powercpu, powerpccpu, powerpcos, biendian, | |
f282ffb3 | 914 | sysv, aix. |
e8515283 DE |
915 | |
916 | @end table | |
917 | ||
ef88b07d JM |
918 | @item --enable-threads |
919 | Specify that the target | |
38209993 LG |
920 | supports threads. This affects the Objective-C compiler and runtime |
921 | library, and exception handling for other languages like C++ and Java. | |
6ac48571 | 922 | On some systems, this is the default. |
f42974dc | 923 | |
f6160ed5 LR |
924 | In general, the best (and, in many cases, the only known) threading |
925 | model available will be configured for use. Beware that on some | |
2dd76960 | 926 | systems, GCC has not been taught what threading models are generally |
3c6bb1db LR |
927 | available for the system. In this case, @option{--enable-threads} is an |
928 | alias for @option{--enable-threads=single}. | |
f6160ed5 LR |
929 | |
930 | @item --disable-threads | |
931 | Specify that threading support should be disabled for the system. | |
3c6bb1db | 932 | This is an alias for @option{--enable-threads=single}. |
f6160ed5 | 933 | |
ef88b07d JM |
934 | @item --enable-threads=@var{lib} |
935 | Specify that | |
38209993 LG |
936 | @var{lib} is the thread support library. This affects the Objective-C |
937 | compiler and runtime library, and exception handling for other languages | |
f85b8d1a JM |
938 | like C++ and Java. The possibilities for @var{lib} are: |
939 | ||
940 | @table @code | |
941 | @item aix | |
942 | AIX thread support. | |
943 | @item dce | |
944 | DCE thread support. | |
4c80872c RK |
945 | @item gnat |
946 | Ada tasking support. For non-Ada programs, this setting is equivalent | |
8a36672b | 947 | to @samp{single}. When used in conjunction with the Ada run time, it |
4c80872c RK |
948 | causes GCC to use the same thread primitives as Ada uses. This option |
949 | is necessary when using both Ada and the back end exception handling, | |
950 | which is the default for most Ada targets. | |
f85b8d1a | 951 | @item mach |
eea81d3e | 952 | Generic MACH thread support, known to work on NeXTSTEP@. (Please note |
3c6bb1db | 953 | that the file needed to support this configuration, @file{gthr-mach.h}, is |
f6160ed5 LR |
954 | missing and thus this setting will cause a known bootstrap failure.) |
955 | @item no | |
956 | This is an alias for @samp{single}. | |
f85b8d1a | 957 | @item posix |
18167442 EB |
958 | Generic POSIX/Unix98 thread support. |
959 | @item posix95 | |
960 | Generic POSIX/Unix95 thread support. | |
f6160ed5 LR |
961 | @item rtems |
962 | RTEMS thread support. | |
f85b8d1a JM |
963 | @item single |
964 | Disable thread support, should work for all platforms. | |
965 | @item solaris | |
eea81d3e | 966 | Sun Solaris 2 thread support. |
f85b8d1a JM |
967 | @item vxworks |
968 | VxWorks thread support. | |
969 | @item win32 | |
970 | Microsoft Win32 API thread support. | |
61fec9ff JB |
971 | @item nks |
972 | Novell Kernel Services thread support. | |
f85b8d1a | 973 | @end table |
f42974dc | 974 | |
8dea1cca DD |
975 | @item --enable-tls |
976 | Specify that the target supports TLS (Thread Local Storage). Usually | |
977 | configure can correctly determine if TLS is supported. In cases where | |
978 | it guesses incorrectly, TLS can be explicitly enabled or disabled with | |
979 | @option{--enable-tls} or @option{--disable-tls}. This can happen if | |
980 | the assembler supports TLS but the C library does not, or if the | |
981 | assumptions made by the configure test are incorrect. | |
982 | ||
983 | @item --disable-tls | |
984 | Specify that the target does not support TLS. | |
985 | This is an alias for @option{--enable-tls=no}. | |
986 | ||
ef88b07d | 987 | @item --with-cpu=@var{cpu} |
7816bea0 DJ |
988 | Specify which cpu variant the compiler should generate code for by default. |
989 | @var{cpu} will be used as the default value of the @option{-mcpu=} switch. | |
990 | This option is only supported on some targets, including ARM, i386, PowerPC, | |
991 | and SPARC@. | |
992 | ||
993 | @item --with-schedule=@var{cpu} | |
994 | @itemx --with-arch=@var{cpu} | |
995 | @itemx --with-tune=@var{cpu} | |
996 | @itemx --with-abi=@var{abi} | |
9b66ebb1 | 997 | @itemx --with-fpu=@var{type} |
7816bea0 DJ |
998 | @itemx --with-float=@var{type} |
999 | These configure options provide default values for the @option{-mschedule=}, | |
9b66ebb1 PB |
1000 | @option{-march=}, @option{-mtune=}, @option{-mabi=}, and @option{-mfpu=} |
1001 | options and for @option{-mhard-float} or @option{-msoft-float}. As with | |
1002 | @option{--with-cpu}, which switches will be accepted and acceptable values | |
1003 | of the arguments depend on the target. | |
f42974dc | 1004 | |
3cf94279 PB |
1005 | @item --with-mode=@var{mode} |
1006 | Specify if the compiler should default to @option{-marm} or @option{-mthumb}. | |
1007 | This option is only supported on ARM targets. | |
1008 | ||
9f0df97a DD |
1009 | @item --with-divide=@var{type} |
1010 | Specify how the compiler should generate code for checking for | |
1011 | division by zero. This option is only supported on the MIPS target. | |
1012 | The possibilities for @var{type} are: | |
1013 | @table @code | |
1014 | @item traps | |
1015 | Division by zero checks use conditional traps (this is the default on | |
1016 | systems that support conditional traps). | |
1017 | @item breaks | |
1018 | Division by zero checks use the break instruction. | |
1019 | @end table | |
1020 | ||
354b7da5 DH |
1021 | @item --enable-__cxa_atexit |
1022 | Define if you want to use __cxa_atexit, rather than atexit, to | |
1023 | register C++ destructors for local statics and global objects. | |
1024 | This is essential for fully standards-compliant handling of | |
8a36672b JM |
1025 | destructors, but requires __cxa_atexit in libc. This option is currently |
1026 | only available on systems with GNU libc. When enabled, this will cause | |
354b7da5 DH |
1027 | @option{-fuse-cxa-exit} to be passed by default. |
1028 | ||
ef88b07d JM |
1029 | @item --enable-target-optspace |
1030 | Specify that target | |
38209993 LG |
1031 | libraries should be optimized for code space instead of code speed. |
1032 | This is the default for the m32r platform. | |
f42974dc | 1033 | |
ab130aa5 JM |
1034 | @item --disable-cpp |
1035 | Specify that a user visible @command{cpp} program should not be installed. | |
1036 | ||
1037 | @item --with-cpp-install-dir=@var{dirname} | |
1038 | Specify that the user visible @command{cpp} program should be installed | |
1039 | in @file{@var{prefix}/@var{dirname}/cpp}, in addition to @var{bindir}. | |
f42974dc | 1040 | |
07cf4226 DM |
1041 | @item --enable-initfini-array |
1042 | Force the use of sections @code{.init_array} and @code{.fini_array} | |
1043 | (instead of @code{.init} and @code{.fini}) for constructors and | |
1044 | destructors. Option @option{--disable-initfini-array} has the | |
1045 | opposite effect. If neither option is specified, the configure script | |
1046 | will try to guess whether the @code{.init_array} and | |
1047 | @code{.fini_array} sections are supported and, if they are, use them. | |
1048 | ||
ef88b07d JM |
1049 | @item --enable-maintainer-mode |
1050 | The build rules that | |
6cfb3f16 | 1051 | regenerate the GCC master message catalog @file{gcc.pot} are normally |
767094dd JM |
1052 | disabled. This is because it can only be rebuilt if the complete source |
1053 | tree is present. If you have changed the sources and want to rebuild the | |
6ac48571 | 1054 | catalog, configuring with @option{--enable-maintainer-mode} will enable |
767094dd | 1055 | this. Note that you need a recent version of the @code{gettext} tools |
6ac48571 JM |
1056 | to do so. |
1057 | ||
f5c3bb4b PB |
1058 | @item --disable-bootstrap |
1059 | For a native build, the default configuration is to perform | |
1060 | a 3-stage bootstrap of the compiler when @samp{make} is invoked, | |
1061 | testing that GCC can compile itself correctly. If you want to disable | |
1062 | this process, you can configure with @option{--disable-bootstrap}. | |
1063 | ||
1064 | @item --enable-bootstrap | |
1065 | In special cases, you may want to perform a 3-stage build | |
1066 | even if the target and host triplets are different. | |
1067 | This could happen when the host can run code compiled for | |
1068 | the target (e.g.@: host is i686-linux, target is i486-linux). | |
1069 | Starting from GCC 4.2, to do this you have to configure explicitly | |
1070 | with @option{--enable-bootstrap}. | |
1071 | ||
51b9ff45 | 1072 | @item --enable-generated-files-in-srcdir |
80521187 | 1073 | Neither the .c and .h files that are generated from Bison and flex nor the |
51b9ff45 | 1074 | info manuals and man pages that are built from the .texi files are present |
80521187 GP |
1075 | in the SVN development tree. When building GCC from that development tree, |
1076 | or from one of our snapshots, those generated files are placed in your | |
1077 | build directory, which allows for the source to be in a readonly | |
1078 | directory. | |
51b9ff45 KC |
1079 | |
1080 | If you configure with @option{--enable-generated-files-in-srcdir} then those | |
1081 | generated files will go into the source directory. This is mainly intended | |
1082 | for generating release or prerelease tarballs of the GCC sources, since it | |
80521187 GP |
1083 | is not a requirement that the users of source releases to have flex, Bison, |
1084 | or makeinfo. | |
51b9ff45 | 1085 | |
ef88b07d JM |
1086 | @item --enable-version-specific-runtime-libs |
1087 | Specify | |
38209993 | 1088 | that runtime libraries should be installed in the compiler specific |
8e5f33ff GK |
1089 | subdirectory (@file{@var{libdir}/gcc}) rather than the usual places. In |
1090 | addition, @samp{libstdc++}'s include files will be installed into | |
1091 | @file{@var{libdir}} unless you overruled it by using | |
6cfb3f16 | 1092 | @option{--with-gxx-include-dir=@var{dirname}}. Using this option is |
38209993 | 1093 | particularly useful if you intend to use several versions of GCC in |
8a36672b | 1094 | parallel. This is currently supported by @samp{libgfortran}, |
b9034bbd AJ |
1095 | @samp{libjava}, @samp{libmudflap}, @samp{libstdc++}, and @samp{libobjc}. |
1096 | ||
c33b7bf0 TF |
1097 | @item --with-java-home=@var{dirname} |
1098 | This @samp{libjava} option overrides the default value of the | |
1099 | @samp{java.home} system property. It is also used to set | |
1100 | @samp{sun.boot.class.path} to @file{@var{dirname}/lib/rt.jar}. By | |
1101 | default @samp{java.home} is set to @file{@var{prefix}} and | |
1102 | @samp{sun.boot.class.path} to | |
1103 | @file{@var{datadir}/java/libgcj-@var{version}.jar}. | |
38209993 | 1104 | |
ef88b07d JM |
1105 | @item --enable-languages=@var{lang1},@var{lang2},@dots{} |
1106 | Specify that only a particular subset of compilers and | |
767094dd | 1107 | their runtime libraries should be built. For a list of valid values for |
6cfb3f16 | 1108 | @var{langN} you can issue the following command in the |
eea81d3e | 1109 | @file{gcc} directory of your GCC source tree:@* |
3ab51846 | 1110 | @smallexample |
eea81d3e | 1111 | grep language= */config-lang.in |
3ab51846 | 1112 | @end smallexample |
eea81d3e | 1113 | Currently, you can use any of the following: |
47530dd9 | 1114 | @code{all}, @code{ada}, @code{c}, @code{c++}, @code{fortran}, @code{java}, |
f995c51f JW |
1115 | @code{objc}, @code{obj-c++}, @code{treelang}. |
1116 | Building the Ada compiler has special requirements, see below. | |
1117 | If you do not pass this flag, or specify the option @code{all}, then all | |
1118 | default languages available in the @file{gcc} sub-tree will be configured. | |
1119 | Ada, Objective-C++, and treelang are not default languages; the rest are. | |
cc11cc9b PB |
1120 | Re-defining @code{LANGUAGES} when calling @samp{make} @strong{does not} |
1121 | work anymore, as those language sub-directories might not have been | |
1122 | configured! | |
f42974dc | 1123 | |
cd271054 AC |
1124 | @item --disable-libada |
1125 | Specify that the run-time libraries and tools used by GNAT should not | |
1126 | be built. This can be useful for debugging, or for compatibility with | |
c2910edf | 1127 | previous Ada build procedures, when it was required to explicitly |
cd271054 AC |
1128 | do a @samp{make -C gcc gnatlib_and_tools}. |
1129 | ||
ef0087a7 KH |
1130 | @item --disable-libssp |
1131 | Specify that the run-time libraries for stack smashing protection | |
1132 | should not be built. | |
1133 | ||
4fe7a8bc AH |
1134 | @item --disable-libgomp |
1135 | Specify that the run-time libraries used by GOMP should not be built. | |
1136 | ||
ef88b07d JM |
1137 | @item --with-dwarf2 |
1138 | Specify that the compiler should | |
eea81d3e | 1139 | use DWARF 2 debugging information as the default. |
f85b8d1a | 1140 | |
7f970b70 AM |
1141 | @item --enable-targets=all |
1142 | @itemx --enable-targets=@var{target_list} | |
1143 | Some GCC targets, e.g.@: powerpc64-linux, build bi-arch compilers. | |
1144 | These are compilers that are able to generate either 64-bit or 32-bit | |
8ab5f5c9 | 1145 | code. Typically, the corresponding 32-bit target, e.g.@: |
7f970b70 AM |
1146 | powerpc-linux for powerpc64-linux, only generates 32-bit code. This |
1147 | option enables the 32-bit target to be a bi-arch compiler, which is | |
1148 | useful when you want a bi-arch compiler that defaults to 32-bit, and | |
1149 | you are building a bi-arch or multi-arch binutils in a combined tree. | |
1150 | Currently, this option only affects powerpc-linux. | |
1151 | ||
1152 | @item --enable-secureplt | |
1153 | This option enables @option{-msecure-plt} by default for powerpc-linux. | |
1154 | @ifnothtml | |
1155 | @xref{RS/6000 and PowerPC Options,, RS/6000 and PowerPC Options, gcc, | |
1156 | Using the GNU Compiler Collection (GCC)}, | |
1157 | @end ifnothtml | |
1158 | @ifhtml | |
1159 | See ``RS/6000 and PowerPC Options'' in the main manual | |
1160 | @end ifhtml | |
1161 | ||
f85b8d1a | 1162 | @item --enable-win32-registry |
eea81d3e | 1163 | @itemx --enable-win32-registry=@var{key} |
f85b8d1a | 1164 | @itemx --disable-win32-registry |
95fef11f | 1165 | The @option{--enable-win32-registry} option enables Microsoft Windows-hosted GCC |
f85b8d1a JM |
1166 | to look up installations paths in the registry using the following key: |
1167 | ||
1168 | @smallexample | |
eea81d3e | 1169 | @code{HKEY_LOCAL_MACHINE\SOFTWARE\Free Software Foundation\@var{key}} |
f85b8d1a JM |
1170 | @end smallexample |
1171 | ||
eea81d3e | 1172 | @var{key} defaults to GCC version number, and can be overridden by the |
8a36672b | 1173 | @option{--enable-win32-registry=@var{key}} option. Vendors and distributors |
f85b8d1a JM |
1174 | who use custom installers are encouraged to provide a different key, |
1175 | perhaps one comprised of vendor name and GCC version number, to | |
767094dd | 1176 | avoid conflict with existing installations. This feature is enabled |
6cfb3f16 | 1177 | by default, and can be disabled by @option{--disable-win32-registry} |
f85b8d1a JM |
1178 | option. This option has no effect on the other hosts. |
1179 | ||
1180 | @item --nfp | |
1181 | Specify that the machine does not have a floating point unit. This | |
c9693e96 LH |
1182 | option only applies to @samp{m68k-sun-sunos@var{n}}. On any other |
1183 | system, @option{--nfp} has no effect. | |
f85b8d1a | 1184 | |
dd859b8a KG |
1185 | @item --enable-werror |
1186 | @itemx --disable-werror | |
1187 | @itemx --enable-werror=yes | |
1188 | @itemx --enable-werror=no | |
1189 | When you specify this option, it controls whether certain files in the | |
1190 | compiler are built with @option{-Werror} in bootstrap stage2 and later. | |
1191 | If you don't specify it, @option{-Werror} is turned on for the main | |
1192 | development trunk. However it defaults to off for release branches and | |
1193 | final releases. The specific files which get @option{-Werror} are | |
1194 | controlled by the Makefiles. | |
1195 | ||
f85b8d1a JM |
1196 | @item --enable-checking |
1197 | @itemx --enable-checking=@var{list} | |
cdce5c16 | 1198 | When you specify this option, the compiler is built to perform internal |
e5080aa6 | 1199 | consistency checks of the requested complexity. This does not change the |
cdce5c16 NS |
1200 | generated code, but adds error checking within the compiler. This will |
1201 | slow down the compiler and may only work properly if you are building | |
1202 | the compiler with GCC@. This is @samp{yes} by default when building | |
80521187 | 1203 | from SVN or snapshots, but @samp{release} for releases. More control |
cdce5c16 NS |
1204 | over the checks may be had by specifying @var{list}. The categories of |
1205 | checks available are @samp{yes} (most common checks | |
1206 | @samp{assert,misc,tree,gc,rtlflag,runtime}), @samp{no} (no checks at | |
1207 | all), @samp{all} (all but @samp{valgrind}), @samp{release} (cheapest | |
1208 | checks @samp{assert,runtime}) or @samp{none} (same as @samp{no}). | |
1209 | Individual checks can be enabled with these flags @samp{assert}, | |
1210 | @samp{fold}, @samp{gc}, @samp{gcac} @samp{misc}, @samp{rtl}, | |
1211 | @samp{rtlflag}, @samp{runtime}, @samp{tree}, and @samp{valgrind}. | |
1212 | ||
1213 | The @samp{valgrind} check requires the external @command{valgrind} | |
ccf548a7 | 1214 | simulator, available from @uref{http://valgrind.org/}. The |
cdce5c16 NS |
1215 | @samp{rtl}, @samp{gcac} and @samp{valgrind} checks are very expensive. |
1216 | To disable all checking, @samp{--disable-checking} or | |
1217 | @samp{--enable-checking=none} must be explicitly requested. Disabling | |
1218 | assertions will make the compiler and runtime slightly faster but | |
1219 | increase the risk of undetected internal errors causing wrong code to be | |
1220 | generated. | |
f85b8d1a | 1221 | |
22aa533e | 1222 | @item --enable-coverage |
31775d31 | 1223 | @itemx --enable-coverage=@var{level} |
22aa533e | 1224 | With this option, the compiler is built to collect self coverage |
8a36672b JM |
1225 | information, every time it is run. This is for internal development |
1226 | purposes, and only works when the compiler is being built with gcc. The | |
22aa533e | 1227 | @var{level} argument controls whether the compiler is built optimized or |
8a36672b | 1228 | not, values are @samp{opt} and @samp{noopt}. For coverage analysis you |
22aa533e | 1229 | want to disable optimization, for performance analysis you want to |
8a36672b | 1230 | enable optimization. When coverage is enabled, the default level is |
22aa533e NS |
1231 | without optimization. |
1232 | ||
439a7e54 | 1233 | @item --enable-gather-detailed-mem-stats |
95ea367d | 1234 | When this option is specified more detailed information on memory |
439a7e54 | 1235 | allocation is gathered. This information is printed when using |
daf2f129 | 1236 | @option{-fmem-report}. |
439a7e54 | 1237 | |
5dd90688 RG |
1238 | @item --with-gc |
1239 | @itemx --with-gc=@var{choice} | |
1240 | With this option you can specify the garbage collector implementation | |
1241 | used during the compilation process. @var{choice} can be one of | |
1242 | @samp{page} and @samp{zone}, where @samp{page} is the default. | |
1243 | ||
f85b8d1a JM |
1244 | @item --enable-nls |
1245 | @itemx --disable-nls | |
6cfb3f16 | 1246 | The @option{--enable-nls} option enables Native Language Support (NLS), |
f85b8d1a | 1247 | which lets GCC output diagnostics in languages other than American |
767094dd | 1248 | English. Native Language Support is enabled by default if not doing a |
161d7b59 | 1249 | canadian cross build. The @option{--disable-nls} option disables NLS@. |
f85b8d1a JM |
1250 | |
1251 | @item --with-included-gettext | |
c771326b | 1252 | If NLS is enabled, the @option{--with-included-gettext} option causes the build |
021c4bfd | 1253 | procedure to prefer its copy of GNU @command{gettext}. |
f85b8d1a JM |
1254 | |
1255 | @item --with-catgets | |
1256 | If NLS is enabled, and if the host lacks @code{gettext} but has the | |
1257 | inferior @code{catgets} interface, the GCC build procedure normally | |
1258 | ignores @code{catgets} and instead uses GCC's copy of the GNU | |
6cfb3f16 | 1259 | @code{gettext} library. The @option{--with-catgets} option causes the |
f85b8d1a | 1260 | build procedure to use the host's @code{catgets} in this situation. |
80f9249a | 1261 | |
5304400d CR |
1262 | @item --with-libiconv-prefix=@var{dir} |
1263 | Search for libiconv header files in @file{@var{dir}/include} and | |
1264 | libiconv library files in @file{@var{dir}/lib}. | |
1265 | ||
9340544b ZW |
1266 | @item --enable-obsolete |
1267 | Enable configuration for an obsoleted system. If you attempt to | |
1268 | configure GCC for a system (build, host, or target) which has been | |
1269 | obsoleted, and you do not specify this flag, configure will halt with an | |
1270 | error message. | |
1271 | ||
1272 | All support for systems which have been obsoleted in one release of GCC | |
1273 | is removed entirely in the next major release, unless someone steps | |
1274 | forward to maintain the port. | |
486aa804 BE |
1275 | |
1276 | @item --enable-decimal-float | |
1277 | @itemx --disable-decimal-float | |
1278 | Enable (or disable) support for the C decimal floating point | |
1279 | extension. This is enabled by default only on PowerPC GNU/Linux | |
1280 | systems. Other systems may also support it, but require the user to | |
1281 | specifically enable it. | |
1282 | ||
ed965309 JJ |
1283 | @item --with-long-double-128 |
1284 | Specify if @code{long double} type should be 128-bit by default on selected | |
1285 | GNU/Linux architectures. If using @code{--without-long-double-128}, | |
1286 | @code{long double} will be by default 64-bit, the same as @code{double} type. | |
1287 | When neither of these configure options are used, the default will be | |
1288 | 128-bit @code{long double} when built against GNU C Library 2.4 and later, | |
1289 | 64-bit @code{long double} otherwise. | |
1290 | ||
ef88b07d | 1291 | @end table |
f42974dc | 1292 | |
c1c3bb0c ME |
1293 | @subheading Cross-Compiler-Specific Options |
1294 | The following options only apply to building cross compilers. | |
ef88b07d | 1295 | @table @code |
4977bab6 ZW |
1296 | @item --with-sysroot |
1297 | @itemx --with-sysroot=@var{dir} | |
1298 | Tells GCC to consider @var{dir} as the root of a tree that contains a | |
1299 | (subset of) the root filesystem of the target operating system. | |
1300 | Target system headers, libraries and run-time object files will be | |
1301 | searched in there. The specified directory is not copied into the | |
1302 | install tree, unlike the options @option{--with-headers} and | |
1303 | @option{--with-libs} that this option obsoletes. The default value, | |
1304 | in case @option{--with-sysroot} is not given an argument, is | |
047d636f DJ |
1305 | @option{$@{gcc_tooldir@}/sys-root}. If the specified directory is a |
1306 | subdirectory of @option{$@{exec_prefix@}}, then it will be found relative to | |
1307 | the GCC binaries if the installation tree is moved. | |
4977bab6 | 1308 | |
160633c6 MM |
1309 | @item --with-build-sysroot |
1310 | @itemx --with-build-sysroot=@var{dir} | |
1311 | Tells GCC to consider @var{dir} as the system root (see | |
526635cb | 1312 | @option{--with-sysroot}) while building target libraries, instead of |
160633c6 MM |
1313 | the directory specified with @option{--with-sysroot}. This option is |
1314 | only useful when you are already using @option{--with-sysroot}. You | |
526635cb | 1315 | can use @option{--with-build-sysroot} when you are configuring with |
160633c6 | 1316 | @option{--prefix} set to a directory that is different from the one in |
526635cb MM |
1317 | which you are installing GCC and your target libraries. |
1318 | ||
1319 | This option affects the system root for the compiler used to build | |
1320 | target libraries (which runs on the build system); it does not affect | |
1321 | the compiler which is used to build GCC itself. | |
160633c6 | 1322 | |
65a824f6 JT |
1323 | @item --with-headers |
1324 | @itemx --with-headers=@var{dir} | |
4977bab6 | 1325 | Deprecated in favor of @option{--with-sysroot}. |
65a824f6 JT |
1326 | Specifies that target headers are available when building a cross compiler. |
1327 | The @var{dir} argument specifies a directory which has the target include | |
1328 | files. These include files will be copied into the @file{gcc} install | |
1329 | directory. @emph{This option with the @var{dir} argument is required} when | |
1330 | building a cross compiler, if @file{@var{prefix}/@var{target}/sys-include} | |
1331 | doesn't pre-exist. If @file{@var{prefix}/@var{target}/sys-include} does | |
1332 | pre-exist, the @var{dir} argument may be omitted. @command{fixincludes} | |
8a36672b | 1333 | will be run on these files to make them compatible with GCC@. |
264d65c1 AP |
1334 | |
1335 | @item --without-headers | |
1336 | Tells GCC not use any target headers from a libc when building a cross | |
2dd76960 | 1337 | compiler. When crossing to GNU/Linux, you need the headers so GCC |
264d65c1 | 1338 | can build the exception handling for libgcc. |
264d65c1 | 1339 | |
65a824f6 JT |
1340 | @item --with-libs |
1341 | @itemx --with-libs=``@var{dir1} @var{dir2} @dots{} @var{dirN}'' | |
4977bab6 | 1342 | Deprecated in favor of @option{--with-sysroot}. |
38209993 LG |
1343 | Specifies a list of directories which contain the target runtime |
1344 | libraries. These libraries will be copied into the @file{gcc} install | |
65a824f6 JT |
1345 | directory. If the directory list is omitted, this option has no |
1346 | effect. | |
cc11cc9b | 1347 | |
ef88b07d | 1348 | @item --with-newlib |
eea81d3e | 1349 | Specifies that @samp{newlib} is |
38209993 | 1350 | being used as the target C library. This causes @code{__eprintf} to be |
eea81d3e RO |
1351 | omitted from @file{libgcc.a} on the assumption that it will be provided by |
1352 | @samp{newlib}. | |
cc11cc9b PB |
1353 | |
1354 | @item --with-build-time-tools=@var{dir} | |
1355 | Specifies where to find the set of target tools (assembler, linker, etc.) | |
1356 | that will be used while building GCC itself. This option can be useful | |
1357 | if the directory layouts are different between the system you are building | |
1358 | GCC on, and the system where you will deploy it. | |
1359 | ||
1360 | For example, on a @option{ia64-hp-hpux} system, you may have the GNU | |
1361 | assembler and linker in @file{/usr/bin}, and the native tools in a | |
1362 | different path, and build a toolchain that expects to find the | |
1363 | native tools in @file{/usr/bin}. | |
1364 | ||
1365 | When you use this option, you should ensure that @var{dir} includes | |
1366 | @command{ar}, @command{as}, @command{ld}, @command{nm}, | |
1367 | @command{ranlib} and @command{strip} if necessary, and possibly | |
1368 | @command{objdump}. Otherwise, GCC may use an inconsistent set of | |
1369 | tools. | |
ef88b07d | 1370 | @end table |
f9047ed3 | 1371 | |
f8ef405c | 1372 | @subheading Fortran-Specific Options |
bda4d063 TS |
1373 | |
1374 | The following options apply to the build of the Fortran front end. | |
1375 | ||
1376 | @table @code | |
1377 | ||
1378 | @item --with-gmp=@var{pathname} | |
bebf829d | 1379 | @itemx --with-mpfr=@var{pathname} |
bda4d063 | 1380 | @itemx --with-gmp-dir=@var{pathname} |
bebf829d | 1381 | @itemx --with-mpfr-dir=@var{pathname} |
f0eb93a8 | 1382 | If you don't have GMP (the GNU Multiple Precision library) and the MPFR |
bebf829d PB |
1383 | Libraries installed in a standard location and you want to build the Fortran |
1384 | front-end, you can explicitly specify the directory where they are installed | |
1385 | (@samp{--with-gmp=gmpinstalldir}, @samp{--with-mpfr=mpfrinstalldir}) or where | |
1386 | you built them without installing (@samp{--with-gmp-dir=gmpbuilddir}, | |
1387 | @samp{--with-mpfr-dir=gmpbuilddir}). | |
bda4d063 TS |
1388 | |
1389 | @end table | |
1390 | ||
c1c3bb0c ME |
1391 | @subheading Java-Specific Options |
1392 | ||
1393 | The following option applies to the build of the Java front end. | |
1394 | ||
1395 | @table @code | |
1396 | @item --disable-libgcj | |
1397 | Specify that the run-time libraries | |
1398 | used by GCJ should not be built. This is useful in case you intend | |
1399 | to use GCJ with some other run-time, or you're going to install it | |
1400 | separately, or it just happens not to build on your particular | |
1401 | machine. In general, if the Java front end is enabled, the GCJ | |
1402 | libraries will be enabled too, unless they're known to not work on | |
1403 | the target platform. If GCJ is enabled but @samp{libgcj} isn't built, you | |
1404 | may need to port it; in this case, before modifying the top-level | |
1405 | @file{configure.in} so that @samp{libgcj} is enabled by default on this platform, | |
1406 | you may use @option{--enable-libgcj} to override the default. | |
1407 | ||
1408 | @end table | |
1409 | ||
1410 | The following options apply to building @samp{libgcj}. | |
1411 | ||
1412 | @subsubheading General Options | |
1413 | ||
1414 | @table @code | |
1415 | @item --disable-getenv-properties | |
1416 | Don't set system properties from @env{GCJ_PROPERTIES}. | |
1417 | ||
1418 | @item --enable-hash-synchronization | |
8a36672b | 1419 | Use a global hash table for monitor locks. Ordinarily, |
c1c3bb0c | 1420 | @samp{libgcj}'s @samp{configure} script automatically makes |
8a36672b | 1421 | the correct choice for this option for your platform. Only use |
c1c3bb0c ME |
1422 | this if you know you need the library to be configured differently. |
1423 | ||
1424 | @item --enable-interpreter | |
8a36672b JM |
1425 | Enable the Java interpreter. The interpreter is automatically |
1426 | enabled by default on all platforms that support it. This option | |
c1c3bb0c ME |
1427 | is really only useful if you want to disable the interpreter |
1428 | (using @option{--disable-interpreter}). | |
1429 | ||
1430 | @item --disable-java-net | |
8a36672b | 1431 | Disable java.net. This disables the native part of java.net only, |
c1c3bb0c ME |
1432 | using non-functional stubs for native method implementations. |
1433 | ||
1434 | @item --disable-jvmpi | |
1435 | Disable JVMPI support. | |
1436 | ||
1437 | @item --with-ecos | |
1438 | Enable runtime eCos target support. | |
1439 | ||
1440 | @item --without-libffi | |
8a36672b | 1441 | Don't use @samp{libffi}. This will disable the interpreter and JNI |
c1c3bb0c ME |
1442 | support as well, as these require @samp{libffi} to work. |
1443 | ||
1444 | @item --enable-libgcj-debug | |
1445 | Enable runtime debugging code. | |
1446 | ||
1447 | @item --enable-libgcj-multifile | |
1448 | If specified, causes all @file{.java} source files to be | |
1449 | compiled into @file{.class} files in one invocation of | |
8a36672b JM |
1450 | @samp{gcj}. This can speed up build time, but is more |
1451 | resource-intensive. If this option is unspecified or | |
c1c3bb0c ME |
1452 | disabled, @samp{gcj} is invoked once for each @file{.java} |
1453 | file to compile into a @file{.class} file. | |
1454 | ||
1455 | @item --with-libiconv-prefix=DIR | |
1456 | Search for libiconv in @file{DIR/include} and @file{DIR/lib}. | |
1457 | ||
1458 | @item --enable-sjlj-exceptions | |
4f6c2131 EB |
1459 | Force use of the @code{setjmp}/@code{longjmp}-based scheme for exceptions. |
1460 | @samp{configure} ordinarily picks the correct value based on the platform. | |
1461 | Only use this option if you are sure you need a different setting. | |
c1c3bb0c ME |
1462 | |
1463 | @item --with-system-zlib | |
1464 | Use installed @samp{zlib} rather than that included with GCC@. | |
1465 | ||
1466 | @item --with-win32-nlsapi=ansi, unicows or unicode | |
1467 | Indicates how MinGW @samp{libgcj} translates between UNICODE | |
8a36672b | 1468 | characters and the Win32 API@. |
c1c3bb0c ME |
1469 | @table @code |
1470 | @item ansi | |
1471 | Use the single-byte @code{char} and the Win32 A functions natively, | |
8a36672b | 1472 | translating to and from UNICODE when using these functions. If |
c1c3bb0c ME |
1473 | unspecified, this is the default. |
1474 | ||
1475 | @item unicows | |
8a36672b | 1476 | Use the @code{WCHAR} and Win32 W functions natively. Adds |
c1c3bb0c ME |
1477 | @code{-lunicows} to @file{libgcj.spec} to link with @samp{libunicows}. |
1478 | @file{unicows.dll} needs to be deployed on Microsoft Windows 9X machines | |
8a36672b | 1479 | running built executables. @file{libunicows.a}, an open-source |
c1c3bb0c ME |
1480 | import library around Microsoft's @code{unicows.dll}, is obtained from |
1481 | @uref{http://libunicows.sourceforge.net/}, which also gives details | |
1482 | on getting @file{unicows.dll} from Microsoft. | |
1483 | ||
1484 | @item unicode | |
8a36672b JM |
1485 | Use the @code{WCHAR} and Win32 W functions natively. Does @emph{not} |
1486 | add @code{-lunicows} to @file{libgcj.spec}. The built executables will | |
c1c3bb0c ME |
1487 | only run on Microsoft Windows NT and above. |
1488 | @end table | |
1489 | @end table | |
1490 | ||
1491 | @subsubheading AWT-Specific Options | |
1492 | ||
1493 | @table @code | |
1494 | @item --with-x | |
1495 | Use the X Window System. | |
1496 | ||
1497 | @item --enable-java-awt=PEER(S) | |
1498 | Specifies the AWT peer library or libraries to build alongside | |
8a36672b JM |
1499 | @samp{libgcj}. If this option is unspecified or disabled, AWT |
1500 | will be non-functional. Current valid values are @option{gtk} and | |
1501 | @option{xlib}. Multiple libraries should be separated by a | |
431ae0bf | 1502 | comma (i.e.@: @option{--enable-java-awt=gtk,xlib}). |
c1c3bb0c ME |
1503 | |
1504 | @item --enable-gtk-cairo | |
8a36672b | 1505 | Build the cairo Graphics2D implementation on GTK@. |
c1c3bb0c ME |
1506 | |
1507 | @item --enable-java-gc=TYPE | |
8a36672b | 1508 | Choose garbage collector. Defaults to @option{boehm} if unspecified. |
c1c3bb0c ME |
1509 | |
1510 | @item --disable-gtktest | |
1511 | Do not try to compile and run a test GTK+ program. | |
1512 | ||
1513 | @item --disable-glibtest | |
1514 | Do not try to compile and run a test GLIB program. | |
1515 | ||
1516 | @item --with-libart-prefix=PFX | |
1517 | Prefix where libart is installed (optional). | |
1518 | ||
1519 | @item --with-libart-exec-prefix=PFX | |
1520 | Exec prefix where libart is installed (optional). | |
1521 | ||
1522 | @item --disable-libarttest | |
1523 | Do not try to compile and run a test libart program. | |
1524 | ||
1525 | @end table | |
f42974dc DW |
1526 | |
1527 | @html | |
b8db17af | 1528 | <hr /> |
f42974dc DW |
1529 | <p> |
1530 | @end html | |
1531 | @ifhtml | |
1532 | @uref{./index.html,,Return to the GCC Installation page} | |
1533 | @end ifhtml | |
1534 | @end ifset | |
1535 | ||
1536 | @c ***Building**************************************************************** | |
6cfb3f16 | 1537 | @ifnothtml |
f42974dc DW |
1538 | @comment node-name, next, previous, up |
1539 | @node Building, Testing, Configuration, Installing GCC | |
6cfb3f16 | 1540 | @end ifnothtml |
f42974dc | 1541 | @ifset buildhtml |
f42974dc DW |
1542 | @ifnothtml |
1543 | @chapter Building | |
1544 | @end ifnothtml | |
1545 | @cindex Installing GCC: Building | |
1546 | ||
1547 | Now that GCC is configured, you are ready to build the compiler and | |
1548 | runtime libraries. | |
1549 | ||
b8df899a | 1550 | Some commands executed when making the compiler may fail (return a |
7ba4ca63 | 1551 | nonzero status) and be ignored by @command{make}. These failures, which |
b8df899a JM |
1552 | are often due to files that were not found, are expected, and can safely |
1553 | be ignored. | |
1554 | ||
1555 | It is normal to have compiler warnings when compiling certain files. | |
1556 | Unless you are a GCC developer, you can generally ignore these warnings | |
dd859b8a KG |
1557 | unless they cause compilation to fail. Developers should attempt to fix |
1558 | any warnings encountered, however they can temporarily continue past | |
1559 | warnings-as-errors by specifying the configure flag | |
1560 | @option{--disable-werror}. | |
b8df899a JM |
1561 | |
1562 | On certain old systems, defining certain environment variables such as | |
6cfb3f16 | 1563 | @env{CC} can interfere with the functioning of @command{make}. |
b8df899a JM |
1564 | |
1565 | If you encounter seemingly strange errors when trying to build the | |
1566 | compiler in a directory other than the source directory, it could be | |
1567 | because you have previously configured the compiler in the source | |
1568 | directory. Make sure you have done all the necessary preparations. | |
1569 | ||
1570 | If you build GCC on a BSD system using a directory stored in an old System | |
4c64396e | 1571 | V file system, problems may occur in running @command{fixincludes} if the |
b8df899a JM |
1572 | System V file system doesn't support symbolic links. These problems |
1573 | result in a failure to fix the declaration of @code{size_t} in | |
1574 | @file{sys/types.h}. If you find that @code{size_t} is a signed type and | |
1575 | that type mismatches occur, this could be the cause. | |
1576 | ||
161d7b59 | 1577 | The solution is not to use such a directory for building GCC@. |
f42974dc | 1578 | |
80521187 GP |
1579 | When building from SVN or snapshots, or if you modify parser sources, |
1580 | you need the Bison parser generator installed. If you do not modify | |
f85b8d1a JM |
1581 | parser sources, releases contain the Bison-generated files and you do |
1582 | not need Bison installed to build them. | |
1583 | ||
80521187 | 1584 | When building from SVN or snapshots, or if you modify Texinfo |
1a598a97 | 1585 | documentation, you need version 4.4 or later of Texinfo installed if you |
f85b8d1a JM |
1586 | want Info documentation to be regenerated. Releases contain Info |
1587 | documentation pre-built for the unmodified documentation in the release. | |
1588 | ||
f42974dc DW |
1589 | @section Building a native compiler |
1590 | ||
f5c3bb4b PB |
1591 | For a native build, the default configuration is to perform |
1592 | a 3-stage bootstrap of the compiler when @samp{make} is invoked. | |
1593 | This will build the entire GCC system and ensure that it compiles | |
1594 | itself correctly. It can be disabled with the @option{--disable-bootstrap} | |
1595 | parameter to @samp{configure}, but bootstrapping is suggested because | |
1596 | the compiler will be tested more completely and could also have | |
1597 | better performance. | |
1598 | ||
1599 | The bootstrapping process will complete the following steps: | |
f42974dc DW |
1600 | |
1601 | @itemize @bullet | |
1602 | @item | |
80521187 | 1603 | Build tools necessary to build the compiler. |
f42974dc DW |
1604 | |
1605 | @item | |
cc11cc9b PB |
1606 | Perform a 3-stage bootstrap of the compiler. This includes building |
1607 | three times the target tools for use by the compiler such as binutils | |
1608 | (bfd, binutils, gas, gprof, ld, and opcodes) if they have been | |
1609 | individually linked or moved into the top level GCC source tree before | |
1610 | configuring. | |
f42974dc DW |
1611 | |
1612 | @item | |
1613 | Perform a comparison test of the stage2 and stage3 compilers. | |
1614 | ||
1615 | @item | |
1616 | Build runtime libraries using the stage3 compiler from the previous step. | |
f9047ed3 | 1617 | |
f42974dc DW |
1618 | @end itemize |
1619 | ||
38209993 | 1620 | If you are short on disk space you might consider @samp{make |
cc11cc9b PB |
1621 | bootstrap-lean} instead. The sequence of compilation is the |
1622 | same described above, but object files from the stage1 and | |
f42974dc DW |
1623 | stage2 of the 3-stage bootstrap of the compiler are deleted as |
1624 | soon as they are no longer needed. | |
1625 | ||
f42974dc DW |
1626 | If you want to save additional space during the bootstrap and in |
1627 | the final installation as well, you can build the compiler binaries | |
8c085f6f | 1628 | without debugging information as in the following example. This will save |
f42974dc DW |
1629 | roughly 40% of disk space both for the bootstrap and the final installation. |
1630 | (Libraries will still contain debugging information.) | |
1631 | ||
3ab51846 | 1632 | @smallexample |
8c085f6f JJ |
1633 | make CFLAGS='-O' LIBCFLAGS='-g -O2' \ |
1634 | LIBCXXFLAGS='-g -O2 -fno-implicit-templates' bootstrap | |
3ab51846 | 1635 | @end smallexample |
8c085f6f | 1636 | |
eea81d3e RO |
1637 | If you wish to use non-default GCC flags when compiling the stage2 and |
1638 | stage3 compilers, set @code{BOOT_CFLAGS} on the command line when doing | |
cc11cc9b | 1639 | @samp{make}. Non-default optimization flags are less well |
f85b8d1a JM |
1640 | tested here than the default of @samp{-g -O2}, but should still work. |
1641 | In a few cases, you may find that you need to specify special flags such | |
1642 | as @option{-msoft-float} here to complete the bootstrap; or, if the | |
1643 | native compiler miscompiles the stage1 compiler, you may need to work | |
1644 | around this, by choosing @code{BOOT_CFLAGS} to avoid the parts of the | |
1645 | stage1 compiler that were miscompiled, or by using @samp{make | |
1646 | bootstrap4} to increase the number of stages of bootstrap. | |
1647 | ||
cc11cc9b PB |
1648 | Note that using non-standard @code{CFLAGS} can cause bootstrap to fail |
1649 | if these trigger a warning with the new compiler. For example using | |
1650 | @samp{-O2 -g -mcpu=i686} on @code{i686-pc-linux-gnu} will cause bootstrap | |
1651 | failure as @option{-mcpu=} is deprecated in 3.4.0 and above. | |
c872077c AP |
1652 | |
1653 | ||
6cfb3f16 | 1654 | If you used the flag @option{--enable-languages=@dots{}} to restrict |
f42974dc | 1655 | the compilers to be built, only those you've actually enabled will be |
767094dd | 1656 | built. This will of course only build those runtime libraries, for |
f42974dc | 1657 | which the particular compiler has been built. Please note, |
cc11cc9b | 1658 | that re-defining @env{LANGUAGES} when calling @samp{make} |
ef88b07d | 1659 | @strong{does not} work anymore! |
f42974dc | 1660 | |
f85b8d1a | 1661 | If the comparison of stage2 and stage3 fails, this normally indicates |
eea81d3e | 1662 | that the stage2 compiler has compiled GCC incorrectly, and is therefore |
f85b8d1a JM |
1663 | a potentially serious bug which you should investigate and report. (On |
1664 | a few systems, meaningful comparison of object files is impossible; they | |
1665 | always appear ``different''. If you encounter this problem, you will | |
1666 | need to disable comparison in the @file{Makefile}.) | |
f42974dc | 1667 | |
cc11cc9b PB |
1668 | If you do not want to bootstrap your compiler, you can configure with |
1669 | @option{--disable-bootstrap}. In particular cases, you may want to | |
1670 | bootstrap your compiler even if the target system is not the same as | |
1671 | the one you are building on: for example, you could build a | |
1672 | @code{powerpc-unknown-linux-gnu} toolchain on a | |
1673 | @code{powerpc64-unknown-linux-gnu} host. In this case, pass | |
1674 | @option{--enable-bootstrap} to the configure script. | |
1675 | ||
1676 | ||
f42974dc DW |
1677 | @section Building a cross compiler |
1678 | ||
f42974dc DW |
1679 | When building a cross compiler, it is not generally possible to do a |
1680 | 3-stage bootstrap of the compiler. This makes for an interesting problem | |
161d7b59 | 1681 | as parts of GCC can only be built with GCC@. |
f42974dc DW |
1682 | |
1683 | To build a cross compiler, we first recommend building and installing a | |
1684 | native compiler. You can then use the native GCC compiler to build the | |
635771af JM |
1685 | cross compiler. The installed native compiler needs to be GCC version |
1686 | 2.95 or later. | |
f42974dc DW |
1687 | |
1688 | Assuming you have already installed a native copy of GCC and configured | |
6cfb3f16 | 1689 | your cross compiler, issue the command @command{make}, which performs the |
f42974dc DW |
1690 | following steps: |
1691 | ||
1692 | @itemize @bullet | |
1693 | @item | |
80521187 | 1694 | Build host tools necessary to build the compiler. |
f42974dc DW |
1695 | |
1696 | @item | |
1697 | Build target tools for use by the compiler such as binutils (bfd, | |
1698 | binutils, gas, gprof, ld, and opcodes) | |
1699 | if they have been individually linked or moved into the top level GCC source | |
1700 | tree before configuring. | |
1701 | ||
1702 | @item | |
1703 | Build the compiler (single stage only). | |
1704 | ||
1705 | @item | |
1706 | Build runtime libraries using the compiler from the previous step. | |
1707 | @end itemize | |
1708 | ||
1709 | Note that if an error occurs in any step the make process will exit. | |
1710 | ||
01e97976 JM |
1711 | If you are not building GNU binutils in the same source tree as GCC, |
1712 | you will need a cross-assembler and cross-linker installed before | |
1713 | configuring GCC@. Put them in the directory | |
1714 | @file{@var{prefix}/@var{target}/bin}. Here is a table of the tools | |
1715 | you should put in this directory: | |
1716 | ||
1717 | @table @file | |
1718 | @item as | |
1719 | This should be the cross-assembler. | |
1720 | ||
1721 | @item ld | |
1722 | This should be the cross-linker. | |
1723 | ||
1724 | @item ar | |
1725 | This should be the cross-archiver: a program which can manipulate | |
1726 | archive files (linker libraries) in the target machine's format. | |
1727 | ||
1728 | @item ranlib | |
1729 | This should be a program to construct a symbol table in an archive file. | |
1730 | @end table | |
1731 | ||
1732 | The installation of GCC will find these programs in that directory, | |
1733 | and copy or link them to the proper place to for the cross-compiler to | |
1734 | find them when run later. | |
1735 | ||
1736 | The easiest way to provide these files is to build the Binutils package. | |
1737 | Configure it with the same @option{--host} and @option{--target} | |
1738 | options that you use for configuring GCC, then build and install | |
1739 | them. They install their executables automatically into the proper | |
1740 | directory. Alas, they do not support all the targets that GCC | |
1741 | supports. | |
1742 | ||
1743 | If you are not building a C library in the same source tree as GCC, | |
1744 | you should also provide the target libraries and headers before | |
1745 | configuring GCC, specifying the directories with | |
1746 | @option{--with-sysroot} or @option{--with-headers} and | |
1747 | @option{--with-libs}. Many targets also require ``start files'' such | |
1748 | as @file{crt0.o} and | |
1749 | @file{crtn.o} which are linked into each executable. There may be several | |
1750 | alternatives for @file{crt0.o}, for use with profiling or other | |
1751 | compilation options. Check your target's definition of | |
1752 | @code{STARTFILE_SPEC} to find out what start files it uses. | |
1753 | ||
f42974dc DW |
1754 | @section Building in parallel |
1755 | ||
d7f755c3 PB |
1756 | GNU Make 3.79 and above, which is necessary to build GCC, support |
1757 | building in parallel. To activate this, you can use @samp{make -j 2} | |
1758 | instead of @samp{make}. You can also specify a bigger number, and | |
cc11cc9b PB |
1759 | in most cases using a value greater than the number of processors in |
1760 | your machine will result in fewer and shorter I/O latency hits, thus | |
1761 | improving overall throughput; this is especially true for slow drives | |
1762 | and network filesystems. | |
f42974dc | 1763 | |
e23381df GB |
1764 | @section Building the Ada compiler |
1765 | ||
1766 | In order to build GNAT, the Ada compiler, you need a working GNAT | |
cc11cc9b PB |
1767 | compiler (GNAT version 3.14 or later, or GCC version 3.1 or later). |
1768 | This includes GNAT tools such as @command{gnatmake} and | |
1769 | @command{gnatlink}, since the Ada front end is written in Ada and | |
1770 | uses some GNAT-specific extensions. | |
1771 | ||
1772 | In order to build a cross compiler, it is suggested to install | |
1773 | the new compiler as native first, and then use it to build the cross | |
1774 | compiler. | |
e23381df | 1775 | |
38e23049 JM |
1776 | @command{configure} does not test whether the GNAT installation works |
1777 | and has a sufficiently recent version; if too old a GNAT version is | |
1778 | installed, the build will fail unless @option{--enable-languages} is | |
1779 | used to disable building the Ada front end. | |
e23381df | 1780 | |
8f231b5d JH |
1781 | @section Building with profile feedback |
1782 | ||
1783 | It is possible to use profile feedback to optimize the compiler itself. This | |
1784 | should result in a faster compiler binary. Experiments done on x86 using gcc | |
1785 | 3.3 showed approximately 7 percent speedup on compiling C programs. To | |
cc11cc9b | 1786 | bootstrap the compiler with profile feedback, use @code{make profiledbootstrap}. |
8f231b5d JH |
1787 | |
1788 | When @samp{make profiledbootstrap} is run, it will first build a @code{stage1} | |
1789 | compiler. This compiler is used to build a @code{stageprofile} compiler | |
1790 | instrumented to collect execution counts of instruction and branch | |
1791 | probabilities. Then runtime libraries are compiled with profile collected. | |
1792 | Finally a @code{stagefeedback} compiler is built using the information collected. | |
1793 | ||
cc11cc9b | 1794 | Unlike standard bootstrap, several additional restrictions apply. The |
8f231b5d JH |
1795 | compiler used to build @code{stage1} needs to support a 64-bit integral type. |
1796 | It is recommended to only use GCC for this. Also parallel make is currently | |
1797 | not supported since collisions in profile collecting may occur. | |
1798 | ||
f42974dc | 1799 | @html |
b8db17af | 1800 | <hr /> |
f42974dc DW |
1801 | <p> |
1802 | @end html | |
1803 | @ifhtml | |
1804 | @uref{./index.html,,Return to the GCC Installation page} | |
1805 | @end ifhtml | |
1806 | @end ifset | |
1807 | ||
1808 | @c ***Testing***************************************************************** | |
6cfb3f16 | 1809 | @ifnothtml |
f42974dc DW |
1810 | @comment node-name, next, previous, up |
1811 | @node Testing, Final install, Building, Installing GCC | |
6cfb3f16 | 1812 | @end ifnothtml |
f42974dc | 1813 | @ifset testhtml |
f42974dc DW |
1814 | @ifnothtml |
1815 | @chapter Installing GCC: Testing | |
1816 | @end ifnothtml | |
1817 | @cindex Testing | |
1818 | @cindex Installing GCC: Testing | |
1819 | @cindex Testsuite | |
1820 | ||
f97903cc JJ |
1821 | Before you install GCC, we encourage you to run the testsuites and to |
1822 | compare your results with results from a similar configuration that have | |
1823 | been submitted to the | |
1824 | @uref{http://gcc.gnu.org/ml/gcc-testresults/,,gcc-testresults mailing list}. | |
05253aed JJ |
1825 | Some of these archived results are linked from the build status lists |
1826 | at @uref{http://gcc.gnu.org/buildstat.html}, although not everyone who | |
1827 | reports a successful build runs the testsuites and submits the results. | |
f97903cc JJ |
1828 | This step is optional and may require you to download additional software, |
1829 | but it can give you confidence in your new GCC installation or point out | |
8a36672b | 1830 | problems before you install and start using your new GCC@. |
f42974dc | 1831 | |
f9047ed3 | 1832 | First, you must have @uref{download.html,,downloaded the testsuites}. |
f97903cc JJ |
1833 | These are part of the full distribution, but if you downloaded the |
1834 | ``core'' compiler plus any front ends, you must download the testsuites | |
1835 | separately. | |
f42974dc | 1836 | |
f97903cc | 1837 | Second, you must have the testing tools installed. This includes |
80521187 GP |
1838 | @uref{http://www.gnu.org/software/dejagnu/,,DejaGnu}, Tcl, and Expect; |
1839 | the DejaGnu site has links to these. | |
f42974dc | 1840 | |
8cacda7c GP |
1841 | If the directories where @command{runtest} and @command{expect} were |
1842 | installed are not in the @env{PATH}, you may need to set the following | |
1843 | environment variables appropriately, as in the following example (which | |
1844 | assumes that DejaGnu has been installed under @file{/usr/local}): | |
f42974dc | 1845 | |
3ab51846 | 1846 | @smallexample |
f42974dc DW |
1847 | TCL_LIBRARY = /usr/local/share/tcl8.0 |
1848 | DEJAGNULIBS = /usr/local/share/dejagnu | |
3ab51846 | 1849 | @end smallexample |
f42974dc | 1850 | |
8cacda7c | 1851 | (On systems such as Cygwin, these paths are required to be actual |
f42974dc | 1852 | paths, not mounts or links; presumably this is due to some lack of |
8cacda7c | 1853 | portability in the DejaGnu code.) |
ecb7d6b3 | 1854 | |
f42974dc DW |
1855 | |
1856 | Finally, you can run the testsuite (which may take a long time): | |
3ab51846 | 1857 | @smallexample |
ef88b07d | 1858 | cd @var{objdir}; make -k check |
3ab51846 | 1859 | @end smallexample |
f42974dc | 1860 | |
794aca5d WB |
1861 | This will test various components of GCC, such as compiler |
1862 | front ends and runtime libraries. While running the testsuite, DejaGnu | |
1863 | might emit some harmless messages resembling | |
daf2f129 | 1864 | @samp{WARNING: Couldn't find the global config file.} or |
794aca5d | 1865 | @samp{WARNING: Couldn't find tool init file} that can be ignored. |
06809951 | 1866 | |
962e6e00 | 1867 | @section How can you run the testsuite on selected tests? |
f42974dc | 1868 | |
794aca5d WB |
1869 | In order to run sets of tests selectively, there are targets |
1870 | @samp{make check-gcc} and @samp{make check-g++} | |
1871 | in the @file{gcc} subdirectory of the object directory. You can also | |
1872 | just run @samp{make check} in a subdirectory of the object directory. | |
1873 | ||
1874 | ||
1875 | A more selective way to just run all @command{gcc} execute tests in the | |
1876 | testsuite is to use | |
f42974dc | 1877 | |
3ab51846 | 1878 | @smallexample |
6cfb3f16 | 1879 | make check-gcc RUNTESTFLAGS="execute.exp @var{other-options}" |
3ab51846 | 1880 | @end smallexample |
f42974dc | 1881 | |
794aca5d WB |
1882 | Likewise, in order to run only the @command{g++} ``old-deja'' tests in |
1883 | the testsuite with filenames matching @samp{9805*}, you would use | |
f42974dc | 1884 | |
3ab51846 | 1885 | @smallexample |
6cfb3f16 | 1886 | make check-g++ RUNTESTFLAGS="old-deja.exp=9805* @var{other-options}" |
3ab51846 | 1887 | @end smallexample |
f42974dc | 1888 | |
6cfb3f16 JM |
1889 | The @file{*.exp} files are located in the testsuite directories of the GCC |
1890 | source, the most important ones being @file{compile.exp}, | |
1891 | @file{execute.exp}, @file{dg.exp} and @file{old-deja.exp}. | |
1892 | To get a list of the possible @file{*.exp} files, pipe the | |
38209993 | 1893 | output of @samp{make check} into a file and look at the |
6cfb3f16 | 1894 | @samp{Running @dots{} .exp} lines. |
f42974dc | 1895 | |
e08737dc PE |
1896 | @section Passing options and running multiple testsuites |
1897 | ||
1898 | You can pass multiple options to the testsuite using the | |
1899 | @samp{--target_board} option of DejaGNU, either passed as part of | |
1900 | @samp{RUNTESTFLAGS}, or directly to @command{runtest} if you prefer to | |
1901 | work outside the makefiles. For example, | |
1902 | ||
3ab51846 | 1903 | @smallexample |
e08737dc | 1904 | make check-g++ RUNTESTFLAGS="--target_board=unix/-O3/-fno-strength-reduce" |
3ab51846 | 1905 | @end smallexample |
e08737dc PE |
1906 | |
1907 | will run the standard @command{g++} testsuites (``unix'' is the target name | |
1908 | for a standard native testsuite situation), passing | |
1909 | @samp{-O3 -fno-strength-reduce} to the compiler on every test, i.e., | |
1910 | slashes separate options. | |
1911 | ||
1912 | You can run the testsuites multiple times using combinations of options | |
1913 | with a syntax similar to the brace expansion of popular shells: | |
1914 | ||
3ab51846 | 1915 | @smallexample |
d817041f | 1916 | @dots{}"--target_board=arm-sim/@{-mhard-float,-msoft-float@}@{-O1,-O2,-O3,@}" |
3ab51846 | 1917 | @end smallexample |
e08737dc PE |
1918 | |
1919 | (Note the empty option caused by the trailing comma in the final group.) | |
1920 | The following will run each testsuite eight times using the @samp{arm-sim} | |
1921 | target, as if you had specified all possible combinations yourself: | |
1922 | ||
3ab51846 | 1923 | @smallexample |
e08737dc PE |
1924 | --target_board=arm-sim/-mhard-float/-O1 |
1925 | --target_board=arm-sim/-mhard-float/-O2 | |
1926 | --target_board=arm-sim/-mhard-float/-O3 | |
1927 | --target_board=arm-sim/-mhard-float | |
1928 | --target_board=arm-sim/-msoft-float/-O1 | |
1929 | --target_board=arm-sim/-msoft-float/-O2 | |
1930 | --target_board=arm-sim/-msoft-float/-O3 | |
1931 | --target_board=arm-sim/-msoft-float | |
3ab51846 | 1932 | @end smallexample |
e08737dc PE |
1933 | |
1934 | They can be combined as many times as you wish, in arbitrary ways. This | |
1935 | list: | |
1936 | ||
3ab51846 | 1937 | @smallexample |
e08737dc | 1938 | @dots{}"--target_board=unix/-Wextra@{-O3,-fno-strength-reduce@}@{-fomit-frame-pointer,@}" |
3ab51846 | 1939 | @end smallexample |
e08737dc PE |
1940 | |
1941 | will generate four combinations, all involving @samp{-Wextra}. | |
1942 | ||
1943 | The disadvantage to this method is that the testsuites are run in serial, | |
1944 | which is a waste on multiprocessor systems. For users with GNU Make and | |
1945 | a shell which performs brace expansion, you can run the testsuites in | |
1946 | parallel by having the shell perform the combinations and @command{make} | |
1947 | do the parallel runs. Instead of using @samp{--target_board}, use a | |
1948 | special makefile target: | |
1949 | ||
3ab51846 | 1950 | @smallexample |
e08737dc | 1951 | make -j@var{N} check-@var{testsuite}//@var{test-target}/@var{option1}/@var{option2}/@dots{} |
3ab51846 | 1952 | @end smallexample |
e08737dc PE |
1953 | |
1954 | For example, | |
1955 | ||
3ab51846 | 1956 | @smallexample |
e08737dc | 1957 | make -j3 check-gcc//sh-hms-sim/@{-m1,-m2,-m3,-m3e,-m4@}/@{,-nofpu@} |
3ab51846 | 1958 | @end smallexample |
e08737dc PE |
1959 | |
1960 | will run three concurrent ``make-gcc'' testsuites, eventually testing all | |
1961 | ten combinations as described above. Note that this is currently only | |
1962 | supported in the @file{gcc} subdirectory. (To see how this works, try | |
1963 | typing @command{echo} before the example given here.) | |
1964 | ||
1965 | ||
1966 | @section Additional testing for Java Class Libraries | |
1967 | ||
688d8b84 RM |
1968 | The Java runtime tests can be executed via @samp{make check} |
1969 | in the @file{@var{target}/libjava/testsuite} directory in | |
1970 | the build tree. | |
f702e700 | 1971 | |
f702e700 JJ |
1972 | The @uref{http://sources.redhat.com/mauve/,,Mauve Project} provides |
1973 | a suite of tests for the Java Class Libraries. This suite can be run | |
1974 | as part of libgcj testing by placing the Mauve tree within the libjava | |
1975 | testsuite at @file{libjava/testsuite/libjava.mauve/mauve}, or by | |
1976 | specifying the location of that tree when invoking @samp{make}, as in | |
1977 | @samp{make MAUVEDIR=~/mauve check}. | |
1978 | ||
07a647a3 | 1979 | @uref{http://sources.redhat.com/mauve/jacks.html,,Jacks} |
2eac577f | 1980 | is a free testsuite that tests Java compiler front ends. This suite |
3b41afd9 | 1981 | can be run as part of libgcj testing by placing the Jacks tree within |
582f6e6d TT |
1982 | the libjava testsuite at @file{libjava/testsuite/libjava.jacks/jacks}. |
1983 | ||
f42974dc DW |
1984 | @section How to interpret test results |
1985 | ||
794aca5d | 1986 | The result of running the testsuite are various @file{*.sum} and @file{*.log} |
767094dd | 1987 | files in the testsuite subdirectories. The @file{*.log} files contain a |
f42974dc | 1988 | detailed log of the compiler invocations and the corresponding |
daf2f129 JM |
1989 | results, the @file{*.sum} files summarize the results. These summaries |
1990 | contain status codes for all tests: | |
f42974dc DW |
1991 | |
1992 | @itemize @bullet | |
1993 | @item | |
1994 | PASS: the test passed as expected | |
1995 | @item | |
1996 | XPASS: the test unexpectedly passed | |
1997 | @item | |
1998 | FAIL: the test unexpectedly failed | |
1999 | @item | |
2000 | XFAIL: the test failed as expected | |
2001 | @item | |
2002 | UNSUPPORTED: the test is not supported on this platform | |
2003 | @item | |
2004 | ERROR: the testsuite detected an error | |
2005 | @item | |
2006 | WARNING: the testsuite detected a possible problem | |
2007 | @end itemize | |
2008 | ||
38209993 | 2009 | It is normal for some tests to report unexpected failures. At the |
962e6e00 JM |
2010 | current time the testing harness does not allow fine grained control |
2011 | over whether or not a test is expected to fail. This problem should | |
2012 | be fixed in future releases. | |
f42974dc DW |
2013 | |
2014 | ||
2015 | @section Submitting test results | |
2016 | ||
2017 | If you want to report the results to the GCC project, use the | |
767094dd | 2018 | @file{contrib/test_summary} shell script. Start it in the @var{objdir} with |
f42974dc | 2019 | |
3ab51846 | 2020 | @smallexample |
6cfb3f16 JM |
2021 | @var{srcdir}/contrib/test_summary -p your_commentary.txt \ |
2022 | -m gcc-testresults@@gcc.gnu.org |sh | |
3ab51846 | 2023 | @end smallexample |
f42974dc | 2024 | |
6cfb3f16 | 2025 | This script uses the @command{Mail} program to send the results, so |
767094dd | 2026 | make sure it is in your @env{PATH}. The file @file{your_commentary.txt} is |
f42974dc | 2027 | prepended to the testsuite summary and should contain any special |
767094dd | 2028 | remarks you have on your results or your build environment. Please |
f42974dc | 2029 | do not edit the testsuite result block or the subject line, as these |
05c425a9 | 2030 | messages may be automatically processed. |
f42974dc | 2031 | |
aed5964b | 2032 | @html |
b8db17af | 2033 | <hr /> |
aed5964b JM |
2034 | <p> |
2035 | @end html | |
2036 | @ifhtml | |
2037 | @uref{./index.html,,Return to the GCC Installation page} | |
2038 | @end ifhtml | |
f42974dc DW |
2039 | @end ifset |
2040 | ||
2041 | @c ***Final install*********************************************************** | |
6cfb3f16 | 2042 | @ifnothtml |
f42974dc DW |
2043 | @comment node-name, next, previous, up |
2044 | @node Final install, , Testing, Installing GCC | |
6cfb3f16 | 2045 | @end ifnothtml |
f42974dc | 2046 | @ifset finalinstallhtml |
f42974dc DW |
2047 | @ifnothtml |
2048 | @chapter Installing GCC: Final installation | |
2049 | @end ifnothtml | |
2050 | ||
eea81d3e | 2051 | Now that GCC has been built (and optionally tested), you can install it with |
3ab51846 | 2052 | @smallexample |
eea81d3e | 2053 | cd @var{objdir}; make install |
3ab51846 | 2054 | @end smallexample |
f42974dc | 2055 | |
06809951 GP |
2056 | We strongly recommend to install into a target directory where there is |
2057 | no previous version of GCC present. | |
2058 | ||
f42974dc | 2059 | That step completes the installation of GCC; user level binaries can |
8e5f33ff GK |
2060 | be found in @file{@var{prefix}/bin} where @var{prefix} is the value |
2061 | you specified with the @option{--prefix} to configure (or | |
2062 | @file{/usr/local} by default). (If you specified @option{--bindir}, | |
2063 | that directory will be used instead; otherwise, if you specified | |
2064 | @option{--exec-prefix}, @file{@var{exec-prefix}/bin} will be used.) | |
2065 | Headers for the C++ and Java libraries are installed in | |
2066 | @file{@var{prefix}/include}; libraries in @file{@var{libdir}} | |
2067 | (normally @file{@var{prefix}/lib}); internal parts of the compiler in | |
2068 | @file{@var{libdir}/gcc} and @file{@var{libexecdir}/gcc}; documentation | |
2069 | in info format in @file{@var{infodir}} (normally | |
2070 | @file{@var{prefix}/info}). | |
f42974dc | 2071 | |
53b50ac1 CC |
2072 | When installing cross-compilers, GCC's executables |
2073 | are not only installed into @file{@var{bindir}}, that | |
2074 | is, @file{@var{exec-prefix}/bin}, but additionally into | |
2075 | @file{@var{exec-prefix}/@var{target-alias}/bin}, if that directory | |
2076 | exists. Typically, such @dfn{tooldirs} hold target-specific | |
2077 | binutils, including assembler and linker. | |
2078 | ||
2079 | Installation into a temporary staging area or into a @command{chroot} | |
2080 | jail can be achieved with the command | |
2081 | ||
3ab51846 | 2082 | @smallexample |
53b50ac1 | 2083 | make DESTDIR=@var{path-to-rootdir} install |
3ab51846 | 2084 | @end smallexample |
53b50ac1 CC |
2085 | |
2086 | @noindent where @var{path-to-rootdir} is the absolute path of | |
2087 | a directory relative to which all installation paths will be | |
2088 | interpreted. Note that the directory specified by @code{DESTDIR} | |
2089 | need not exist yet; it will be created if necessary. | |
2090 | ||
2091 | There is a subtle point with tooldirs and @code{DESTDIR}: | |
2092 | If you relocate a cross-compiler installation with | |
2093 | e.g.@: @samp{DESTDIR=@var{rootdir}}, then the directory | |
2094 | @file{@var{rootdir}/@var{exec-prefix}/@var{target-alias}/bin} will | |
2095 | be filled with duplicated GCC executables only if it already exists, | |
2096 | it will not be created otherwise. This is regarded as a feature, | |
2097 | not as a bug, because it gives slightly more control to the packagers | |
2098 | using the @code{DESTDIR} feature. | |
2099 | ||
cc11cc9b | 2100 | If you are bootstrapping a released version of GCC then please |
f97a5bda JJ |
2101 | quickly review the build status page for your release, available from |
2102 | @uref{http://gcc.gnu.org/buildstat.html}. | |
c5997381 JJ |
2103 | If your system is not listed for the version of GCC that you built, |
2104 | send a note to | |
eea81d3e | 2105 | @email{gcc@@gcc.gnu.org} indicating |
8a36672b | 2106 | that you successfully built and installed GCC@. |
c5997381 | 2107 | Include the following information: |
f42974dc | 2108 | |
c5997381 JJ |
2109 | @itemize @bullet |
2110 | @item | |
962e6e00 | 2111 | Output from running @file{@var{srcdir}/config.guess}. Do not send |
c5997381 JJ |
2112 | that file itself, just the one-line output from running it. |
2113 | ||
2114 | @item | |
2dd76960 | 2115 | The output of @samp{gcc -v} for your newly installed @command{gcc}. |
c5997381 JJ |
2116 | This tells us which version of GCC you built and the options you passed to |
2117 | configure. | |
2118 | ||
2b46bc67 JJ |
2119 | @item |
2120 | Whether you enabled all languages or a subset of them. If you used a | |
2121 | full distribution then this information is part of the configure | |
2122 | options in the output of @samp{gcc -v}, but if you downloaded the | |
2123 | ``core'' compiler plus additional front ends then it isn't apparent | |
2124 | which ones you built unless you tell us about it. | |
2125 | ||
c5997381 JJ |
2126 | @item |
2127 | If the build was for GNU/Linux, also include: | |
2128 | @itemize @bullet | |
2129 | @item | |
2130 | The distribution name and version (e.g., Red Hat 7.1 or Debian 2.2.3); | |
2131 | this information should be available from @file{/etc/issue}. | |
2132 | ||
2133 | @item | |
2134 | The version of the Linux kernel, available from @samp{uname --version} | |
2135 | or @samp{uname -a}. | |
2136 | ||
2137 | @item | |
2138 | The version of glibc you used; for RPM-based systems like Red Hat, | |
b9da07da JJ |
2139 | Mandrake, and SuSE type @samp{rpm -q glibc} to get the glibc version, |
2140 | and on systems like Debian and Progeny use @samp{dpkg -l libc6}. | |
c5997381 JJ |
2141 | @end itemize |
2142 | For other systems, you can include similar information if you think it is | |
2143 | relevant. | |
2144 | ||
2145 | @item | |
2146 | Any other information that you think would be useful to people building | |
2147 | GCC on the same configuration. The new entry in the build status list | |
2148 | will include a link to the archived copy of your message. | |
2149 | @end itemize | |
c009f01f JJ |
2150 | |
2151 | We'd also like to know if the | |
2152 | @ifnothtml | |
2153 | @ref{Specific, host/target specific installation notes} | |
2154 | @end ifnothtml | |
2155 | @ifhtml | |
2156 | @uref{specific.html,,host/target specific installation notes} | |
2157 | @end ifhtml | |
2158 | didn't include your host/target information or if that information is | |
2159 | incomplete or out of date. Send a note to | |
962e6e00 | 2160 | @email{gcc@@gcc.gnu.org} detailing how the information should be changed. |
f42974dc | 2161 | |
962e6e00 | 2162 | If you find a bug, please report it following the |
f42974dc DW |
2163 | @uref{../bugs.html,,bug reporting guidelines}. |
2164 | ||
ab130aa5 | 2165 | If you want to print the GCC manuals, do @samp{cd @var{objdir}; make |
1a598a97 | 2166 | dvi}. You will need to have @command{texi2dvi} (version at least 4.4) |
ab130aa5 JM |
2167 | and @TeX{} installed. This creates a number of @file{.dvi} files in |
2168 | subdirectories of @file{@var{objdir}}; these may be converted for | |
2169 | printing with programs such as @command{dvips}. You can also | |
2170 | @uref{http://www.gnu.org/order/order.html,,buy printed manuals from the | |
2171 | Free Software Foundation}, though such manuals may not be for the most | |
161d7b59 | 2172 | recent version of GCC@. |
ab130aa5 | 2173 | |
9d65c5cb | 2174 | If you would like to generate online HTML documentation, do @samp{cd |
f995c51f JW |
2175 | @var{objdir}; make html} and HTML will be generated for the gcc manuals in |
2176 | @file{@var{objdir}/gcc/HTML}. | |
9d65c5cb | 2177 | |
f42974dc | 2178 | @html |
b8db17af | 2179 | <hr /> |
f42974dc DW |
2180 | <p> |
2181 | @end html | |
2182 | @ifhtml | |
2183 | @uref{./index.html,,Return to the GCC Installation page} | |
2184 | @end ifhtml | |
2185 | @end ifset | |
2186 | ||
2187 | @c ***Binaries**************************************************************** | |
6cfb3f16 | 2188 | @ifnothtml |
f42974dc DW |
2189 | @comment node-name, next, previous, up |
2190 | @node Binaries, Specific, Installing GCC, Top | |
6cfb3f16 | 2191 | @end ifnothtml |
f42974dc | 2192 | @ifset binarieshtml |
f42974dc DW |
2193 | @ifnothtml |
2194 | @chapter Installing GCC: Binaries | |
2195 | @end ifnothtml | |
2196 | @cindex Binaries | |
2197 | @cindex Installing GCC: Binaries | |
2198 | ||
161d7b59 | 2199 | We are often asked about pre-compiled versions of GCC@. While we cannot |
f42974dc DW |
2200 | provide these for all platforms, below you'll find links to binaries for |
2201 | various platforms where creating them by yourself is not easy due to various | |
2202 | reasons. | |
2203 | ||
2204 | Please note that we did not create these binaries, nor do we | |
2205 | support them. If you have any problems installing them, please | |
2206 | contact their makers. | |
2207 | ||
2208 | @itemize | |
2209 | @item | |
df002c7d DE |
2210 | AIX: |
2211 | @itemize | |
2212 | @item | |
ff4c5e7b | 2213 | @uref{http://www.bullfreeware.com,,Bull's Freeware and Shareware Archive for AIX}; |
df002c7d DE |
2214 | |
2215 | @item | |
8d5362b7 | 2216 | @uref{http://aixpdslib.seas.ucla.edu,,UCLA Software Library for AIX}. |
df002c7d | 2217 | @end itemize |
f42974dc DW |
2218 | |
2219 | @item | |
8d5362b7 GP |
2220 | DOS---@uref{http://www.delorie.com/djgpp/,,DJGPP}. |
2221 | ||
2222 | @item | |
71c6b994 KH |
2223 | Renesas H8/300[HS]---@uref{http://h8300-hms.sourceforge.net/,,GNU |
2224 | Development Tools for the Renesas H8/300[HS] Series}. | |
f42974dc | 2225 | |
f404402c MW |
2226 | @item |
2227 | HP-UX: | |
2228 | @itemize | |
f42974dc | 2229 | @item |
1d7887ca | 2230 | @uref{http://hpux.cs.utah.edu/,,HP-UX Porting Center}; |
f42974dc | 2231 | |
f404402c MW |
2232 | @item |
2233 | @uref{ftp://sunsite.informatik.rwth-aachen.de/pub/packages/gcc_hpux/,,Binaries for HP-UX 11.00 at Aachen University of Technology}. | |
2234 | @end itemize | |
2235 | ||
3e35d143 SC |
2236 | @item |
2237 | Motorola 68HC11/68HC12---@uref{http://www.gnu-m68hc11.org,,GNU | |
2238 | Development Tools for the Motorola 68HC11/68HC12}. | |
2239 | ||
f42974dc | 2240 | @item |
38209993 | 2241 | @uref{http://www.sco.com/skunkware/devtools/index.html#gcc,,SCO |
8d5362b7 | 2242 | OpenServer/Unixware}. |
f42974dc | 2243 | |
8d5362b7 GP |
2244 | @item |
2245 | Solaris 2 (SPARC, Intel)---@uref{http://www.sunfreeware.com/,,Sunfreeware}. | |
f42974dc DW |
2246 | |
2247 | @item | |
8d5362b7 | 2248 | SGI---@uref{http://freeware.sgi.com/,,SGI Freeware}. |
f42974dc DW |
2249 | |
2250 | @item | |
05c425a9 | 2251 | Microsoft Windows: |
f42974dc DW |
2252 | @itemize |
2253 | @item | |
2254 | The @uref{http://sources.redhat.com/cygwin/,,Cygwin} project; | |
2255 | @item | |
cc92b8ab | 2256 | The @uref{http://www.mingw.org/,,MinGW} project. |
f42974dc DW |
2257 | @end itemize |
2258 | ||
2259 | @item | |
616de62f GP |
2260 | @uref{ftp://ftp.thewrittenword.com/packages/by-name/,,The |
2261 | Written Word} offers binaries for | |
2262 | AIX 4.3.2. | |
2263 | IRIX 6.5, | |
2264 | Digital UNIX 4.0D and 5.1, | |
2265 | GNU/Linux (i386), | |
2266 | HP-UX 10.20, 11.00, and 11.11, and | |
e4652e37 | 2267 | Solaris/SPARC 2.5.1, 2.6, 7, 8, and 9. |
6512c54a GP |
2268 | |
2269 | @item | |
2270 | @uref{http://www.openpkg.org/,,OpenPKG} offers binaries for quite a | |
2271 | number of platforms. | |
eae50c87 PB |
2272 | |
2273 | @item | |
2274 | The @uref{http://gcc.gnu.org/wiki/GFortranBinaries,,GFortran Wiki} has | |
2275 | links to gfortran binaries for several platforms. | |
f42974dc DW |
2276 | @end itemize |
2277 | ||
2278 | In addition to those specific offerings, you can get a binary | |
2279 | distribution CD-ROM from the | |
1d7887ca | 2280 | @uref{http://www.gnu.org/order/order.html,,Free Software Foundation}. |
f42974dc | 2281 | It contains binaries for a number of platforms, and |
767094dd | 2282 | includes not only GCC, but other stuff as well. The current CD does |
f42974dc | 2283 | not contain the latest version of GCC, but it should allow |
767094dd | 2284 | bootstrapping the compiler. An updated version of that disk is in the |
f42974dc DW |
2285 | works. |
2286 | ||
2287 | @html | |
b8db17af | 2288 | <hr /> |
f42974dc DW |
2289 | <p> |
2290 | @end html | |
2291 | @ifhtml | |
2292 | @uref{./index.html,,Return to the GCC Installation page} | |
2293 | @end ifhtml | |
2294 | @end ifset | |
2295 | ||
2296 | @c ***Specific**************************************************************** | |
6cfb3f16 | 2297 | @ifnothtml |
f42974dc | 2298 | @comment node-name, next, previous, up |
73e2155a | 2299 | @node Specific, Old, Binaries, Top |
6cfb3f16 | 2300 | @end ifnothtml |
f42974dc | 2301 | @ifset specifichtml |
f42974dc DW |
2302 | @ifnothtml |
2303 | @chapter Host/target specific installation notes for GCC | |
2304 | @end ifnothtml | |
2305 | @cindex Specific | |
2306 | @cindex Specific installation notes | |
2307 | @cindex Target specific installation | |
2308 | @cindex Host specific installation | |
2309 | @cindex Target specific installation notes | |
2310 | ||
2311 | Please read this document carefully @emph{before} installing the | |
2312 | GNU Compiler Collection on your machine. | |
2313 | ||
c9936427 DD |
2314 | Note that this list of install notes is @emph{not} a list of supported |
2315 | hosts or targets. Not all supported hosts and targets are listed | |
2316 | here, only the ones that require host-specific or target-specific | |
2317 | information are. | |
2318 | ||
ef88b07d | 2319 | @ifhtml |
f42974dc DW |
2320 | @itemize |
2321 | @item | |
5a4c9b10 | 2322 | @uref{#alpha-x-x,,alpha*-*-*} |
f42974dc | 2323 | @item |
5a4c9b10 | 2324 | @uref{#alpha-dec-osf,,alpha*-dec-osf*} |
f42974dc | 2325 | @item |
5a4c9b10 | 2326 | @uref{#alphaev5-cray-unicosmk,,alphaev5-cray-unicosmk*} |
71b96724 | 2327 | @item |
5a4c9b10 | 2328 | @uref{#arc-x-elf,,arc-*-elf} |
b8df899a | 2329 | @item |
5a4c9b10 GP |
2330 | @uref{#arm-x-elf,,arm-*-elf} |
2331 | @uref{#arm-x-coff,,arm-*-coff} | |
2332 | @uref{#arm-x-aout,,arm-*-aout} | |
b8df899a | 2333 | @item |
5a4c9b10 | 2334 | @uref{#xscale-x-x,,xscale-*-*} |
476c334e | 2335 | @item |
f42974dc DW |
2336 | @uref{#avr,,avr} |
2337 | @item | |
0d4a78eb BS |
2338 | @uref{#bfin,,Blackfin} |
2339 | @item | |
0132e321 MH |
2340 | @uref{#c4x,,c4x} |
2341 | @item | |
f42974dc DW |
2342 | @uref{#dos,,DOS} |
2343 | @item | |
5a4c9b10 | 2344 | @uref{#x-x-freebsd,,*-*-freebsd*} |
021c4bfd | 2345 | @item |
f42974dc DW |
2346 | @uref{#h8300-hms,,h8300-hms} |
2347 | @item | |
5a4c9b10 | 2348 | @uref{#hppa-hp-hpux,,hppa*-hp-hpux*} |
f42974dc | 2349 | @item |
5a4c9b10 | 2350 | @uref{#hppa-hp-hpux10,,hppa*-hp-hpux10} |
f42974dc | 2351 | @item |
5a4c9b10 | 2352 | @uref{#hppa-hp-hpux11,,hppa*-hp-hpux11} |
f42974dc | 2353 | @item |
5a4c9b10 | 2354 | @uref{#x-x-linux-gnu,,*-*-linux-gnu} |
f42974dc | 2355 | @item |
5a4c9b10 | 2356 | @uref{#ix86-x-linuxaout,,i?86-*-linux*aout} |
b8df899a | 2357 | @item |
5a4c9b10 | 2358 | @uref{#ix86-x-linux,,i?86-*-linux*} |
f42974dc | 2359 | @item |
d8fcd085 | 2360 | @uref{#ix86-x-sco32v5,,i?86-*-sco3.2v5*} |
f42974dc | 2361 | @item |
d8fcd085 | 2362 | @uref{#ix86-x-solaris210,,i?86-*-solaris2.10} |
8f47c084 | 2363 | @item |
5a4c9b10 | 2364 | @uref{#ix86-x-udk,,i?86-*-udk} |
f42974dc | 2365 | @item |
5a4c9b10 | 2366 | @uref{#ia64-x-linux,,ia64-*-linux} |
b8df899a | 2367 | @item |
5a4c9b10 | 2368 | @uref{#ia64-x-hpux,,ia64-*-hpux*} |
b499d9ab | 2369 | @item |
5a4c9b10 | 2370 | @uref{#x-ibm-aix,,*-ibm-aix*} |
959a73a4 | 2371 | @item |
5a4c9b10 | 2372 | @uref{#iq2000-x-elf,,iq2000-*-elf} |
e3223ea2 | 2373 | @item |
38b2d076 DD |
2374 | @uref{#m32c-x-elf,,m32c-*-elf} |
2375 | @item | |
5a4c9b10 | 2376 | @uref{#m32r-x-elf,,m32r-*-elf} |
b8df899a | 2377 | @item |
b8df899a JM |
2378 | @uref{#m6811-elf,,m6811-elf} |
2379 | @item | |
2380 | @uref{#m6812-elf,,m6812-elf} | |
2381 | @item | |
b8df899a JM |
2382 | @uref{#m68k-hp-hpux,,m68k-hp-hpux} |
2383 | @item | |
5a4c9b10 | 2384 | @uref{#mips-x-x,,mips-*-*} |
b8df899a | 2385 | @item |
b953cc4b | 2386 | @uref{#mips-sgi-irix5,,mips-sgi-irix5} |
f42974dc | 2387 | @item |
b953cc4b | 2388 | @uref{#mips-sgi-irix6,,mips-sgi-irix6} |
f42974dc | 2389 | @item |
5a4c9b10 | 2390 | @uref{#powerpc-x-x,,powerpc*-*-*, powerpc-*-sysv4} |
4f2b1139 | 2391 | @item |
5a4c9b10 | 2392 | @uref{#powerpc-x-darwin,,powerpc-*-darwin*} |
b8df899a | 2393 | @item |
5a4c9b10 | 2394 | @uref{#powerpc-x-elf,,powerpc-*-elf, powerpc-*-sysv4} |
f42974dc | 2395 | @item |
5a4c9b10 | 2396 | @uref{#powerpc-x-linux-gnu,,powerpc*-*-linux-gnu*} |
edf1b3f3 | 2397 | @item |
5a4c9b10 | 2398 | @uref{#powerpc-x-netbsd,,powerpc-*-netbsd*} |
b8df899a | 2399 | @item |
5a4c9b10 | 2400 | @uref{#powerpc-x-eabisim,,powerpc-*-eabisim} |
b8df899a | 2401 | @item |
5a4c9b10 | 2402 | @uref{#powerpc-x-eabi,,powerpc-*-eabi} |
b8df899a | 2403 | @item |
5a4c9b10 | 2404 | @uref{#powerpcle-x-elf,,powerpcle-*-elf, powerpcle-*-sysv4} |
b8df899a | 2405 | @item |
5a4c9b10 | 2406 | @uref{#powerpcle-x-eabisim,,powerpcle-*-eabisim} |
b8df899a | 2407 | @item |
5a4c9b10 | 2408 | @uref{#powerpcle-x-eabi,,powerpcle-*-eabi} |
b8df899a | 2409 | @item |
5a4c9b10 | 2410 | @uref{#s390-x-linux,,s390-*-linux*} |
91abf72d | 2411 | @item |
5a4c9b10 | 2412 | @uref{#s390x-x-linux,,s390x-*-linux*} |
91abf72d | 2413 | @item |
5a4c9b10 | 2414 | @uref{#s390x-ibm-tpf,,s390x-ibm-tpf*} |
8bf06993 | 2415 | @item |
5a4c9b10 | 2416 | @uref{#x-x-solaris2,,*-*-solaris2*} |
f42974dc | 2417 | @item |
5a4c9b10 | 2418 | @uref{#sparc-sun-solaris2,,sparc-sun-solaris2*} |
f42974dc | 2419 | @item |
d8fcd085 | 2420 | @uref{#sparc-sun-solaris27,,sparc-sun-solaris2.7} |
f42974dc | 2421 | @item |
5a4c9b10 | 2422 | @uref{#sparc-x-linux,,sparc-*-linux*} |
c6fa9728 | 2423 | @item |
5a4c9b10 | 2424 | @uref{#sparc64-x-solaris2,,sparc64-*-solaris2*} |
f42974dc | 2425 | @item |
5a4c9b10 | 2426 | @uref{#sparcv9-x-solaris2,,sparcv9-*-solaris2*} |
e403b4bc | 2427 | @item |
5a4c9b10 | 2428 | @uref{#x-x-sysv,,*-*-sysv*} |
b8df899a JM |
2429 | @item |
2430 | @uref{#vax-dec-ultrix,,vax-dec-ultrix} | |
2431 | @item | |
5a4c9b10 | 2432 | @uref{#x-x-vxworks,,*-*-vxworks*} |
4977bab6 | 2433 | @item |
d8fcd085 | 2434 | @uref{#x86-64-x-x,,x86_64-*-*, amd64-*-*} |
7e081a0c | 2435 | @item |
5a4c9b10 | 2436 | @uref{#xtensa-x-elf,,xtensa-*-elf} |
fd29f6ea | 2437 | @item |
5a4c9b10 | 2438 | @uref{#xtensa-x-linux,,xtensa-*-linux*} |
fd29f6ea | 2439 | @item |
f42974dc DW |
2440 | @uref{#windows,,Microsoft Windows} |
2441 | @item | |
2442 | @uref{#os2,,OS/2} | |
2443 | @item | |
2444 | @uref{#older,,Older systems} | |
2445 | @end itemize | |
2446 | ||
2447 | @itemize | |
2448 | @item | |
d8fcd085 | 2449 | @uref{#elf,,all ELF targets} (SVR4, Solaris 2, etc.) |
f42974dc | 2450 | @end itemize |
ef88b07d | 2451 | @end ifhtml |
f42974dc DW |
2452 | |
2453 | ||
2454 | @html | |
2455 | <!-- -------- host/target specific issues start here ---------------- --> | |
b8db17af | 2456 | <hr /> |
f42974dc | 2457 | @end html |
5a4c9b10 | 2458 | @heading @anchor{alpha-x-x}alpha*-*-* |
333e14b0 LR |
2459 | |
2460 | This section contains general configuration information for all | |
2461 | alpha-based platforms using ELF (in particular, ignore this section for | |
161d7b59 | 2462 | DEC OSF/1, Digital UNIX and Tru64 UNIX)@. In addition to reading this |
f2541106 | 2463 | section, please read all other sections that match your target. |
333e14b0 | 2464 | |
021c4bfd RO |
2465 | We require binutils 2.11.2 or newer. |
2466 | Previous binutils releases had a number of problems with DWARF 2 | |
333e14b0 LR |
2467 | debugging information, not the least of which is incorrect linking of |
2468 | shared libraries. | |
2469 | ||
b8df899a | 2470 | @html |
b8db17af | 2471 | <hr /> |
b8df899a | 2472 | @end html |
5a4c9b10 | 2473 | @heading @anchor{alpha-dec-osf}alpha*-dec-osf* |
b8df899a | 2474 | Systems using processors that implement the DEC Alpha architecture and |
f2541106 RO |
2475 | are running the DEC/Compaq Unix (DEC OSF/1, Digital UNIX, or Compaq |
2476 | Tru64 UNIX) operating system, for example the DEC Alpha AXP systems. | |
2477 | ||
c7bdf0a6 ZW |
2478 | As of GCC 3.2, versions before @code{alpha*-dec-osf4} are no longer |
2479 | supported. (These are the versions which identify themselves as DEC | |
2480 | OSF/1.) | |
9340544b | 2481 | |
6e92b3a1 RB |
2482 | In Digital Unix V4.0, virtual memory exhausted bootstrap failures |
2483 | may be fixed by configuring with @option{--with-gc=simple}, | |
2484 | reconfiguring Kernel Virtual Memory and Swap parameters | |
2485 | per the @command{/usr/sbin/sys_check} Tuning Suggestions, | |
2486 | or applying the patch in | |
2487 | @uref{http://gcc.gnu.org/ml/gcc/2002-08/msg00822.html}. | |
2488 | ||
f2541106 RO |
2489 | In Tru64 UNIX V5.1, Compaq introduced a new assembler that does not |
2490 | currently (2001-06-13) work with @command{mips-tfile}. As a workaround, | |
2491 | we need to use the old assembler, invoked via the barely documented | |
2492 | @option{-oldas} option. To bootstrap GCC, you either need to use the | |
2493 | Compaq C Compiler: | |
2494 | ||
3ab51846 | 2495 | @smallexample |
eea81d3e | 2496 | % CC=cc @var{srcdir}/configure [@var{options}] [@var{target}] |
3ab51846 | 2497 | @end smallexample |
f2541106 RO |
2498 | |
2499 | or you can use a copy of GCC 2.95.3 or higher built on Tru64 UNIX V4.0: | |
2500 | ||
3ab51846 | 2501 | @smallexample |
eea81d3e | 2502 | % CC=gcc -Wa,-oldas @var{srcdir}/configure [@var{options}] [@var{target}] |
3ab51846 | 2503 | @end smallexample |
b8df899a | 2504 | |
b953cc4b RO |
2505 | As of GNU binutils 2.11.2, neither GNU @command{as} nor GNU @command{ld} |
2506 | are supported on Tru64 UNIX, so you must not configure GCC with | |
2507 | @option{--with-gnu-as} or @option{--with-gnu-ld}. | |
2508 | ||
f0523f02 | 2509 | GCC writes a @samp{.verstamp} directive to the assembler output file |
b8df899a JM |
2510 | unless it is built as a cross-compiler. It gets the version to use from |
2511 | the system header file @file{/usr/include/stamp.h}. If you install a | |
2512 | new version of DEC Unix, you should rebuild GCC to pick up the new version | |
2513 | stamp. | |
2514 | ||
2515 | Note that since the Alpha is a 64-bit architecture, cross-compilers from | |
2516 | 32-bit machines will not generate code as efficient as that generated | |
2517 | when the compiler is running on a 64-bit machine because many | |
2518 | optimizations that depend on being able to represent a word on the | |
2519 | target in an integral value on the host cannot be performed. Building | |
2520 | cross-compilers on the Alpha for 32-bit machines has only been tested in | |
2521 | a few cases and may not work properly. | |
2522 | ||
7ba4ca63 | 2523 | @samp{make compare} may fail on old versions of DEC Unix unless you add |
6cfb3f16 | 2524 | @option{-save-temps} to @code{CFLAGS}. On these systems, the name of the |
b8df899a JM |
2525 | assembler input file is stored in the object file, and that makes |
2526 | comparison fail if it differs between the @code{stage1} and | |
6cfb3f16 | 2527 | @code{stage2} compilations. The option @option{-save-temps} forces a |
b8df899a | 2528 | fixed name to be used for the assembler input file, instead of a |
6cfb3f16 | 2529 | randomly chosen name in @file{/tmp}. Do not add @option{-save-temps} |
b8df899a | 2530 | unless the comparisons fail without that option. If you add |
6cfb3f16 | 2531 | @option{-save-temps}, you will have to manually delete the @samp{.i} and |
b8df899a JM |
2532 | @samp{.s} files after each series of compilations. |
2533 | ||
f0523f02 | 2534 | GCC now supports both the native (ECOFF) debugging format used by DBX |
161d7b59 | 2535 | and GDB and an encapsulated STABS format for use only with GDB@. See the |
6cfb3f16 | 2536 | discussion of the @option{--with-stabs} option of @file{configure} above |
b8df899a JM |
2537 | for more information on these formats and how to select them. |
2538 | ||
2539 | There is a bug in DEC's assembler that produces incorrect line numbers | |
2540 | for ECOFF format when the @samp{.align} directive is used. To work | |
f0523f02 | 2541 | around this problem, GCC will not emit such alignment directives |
b8df899a JM |
2542 | while writing ECOFF format debugging information even if optimization is |
2543 | being performed. Unfortunately, this has the very undesirable | |
6cfb3f16 JM |
2544 | side-effect that code addresses when @option{-O} is specified are |
2545 | different depending on whether or not @option{-g} is also specified. | |
b8df899a | 2546 | |
6cfb3f16 | 2547 | To avoid this behavior, specify @option{-gstabs+} and use GDB instead of |
161d7b59 | 2548 | DBX@. DEC is now aware of this problem with the assembler and hopes to |
b8df899a JM |
2549 | provide a fix shortly. |
2550 | ||
71b96724 | 2551 | @html |
b8db17af | 2552 | <hr /> |
71b96724 | 2553 | @end html |
5a4c9b10 | 2554 | @heading @anchor{alphaev5-cray-unicosmk}alphaev5-cray-unicosmk* |
71b96724 RL |
2555 | Cray T3E systems running Unicos/Mk. |
2556 | ||
2557 | This port is incomplete and has many known bugs. We hope to improve the | |
2558 | support for this target soon. Currently, only the C front end is supported, | |
2559 | and it is not possible to build parallel applications. Cray modules are not | |
2560 | supported; in particular, Craylibs are assumed to be in | |
2561 | @file{/opt/ctl/craylibs/craylibs}. | |
2562 | ||
cc11cc9b PB |
2563 | On this platform, you need to tell GCC where to find the assembler and |
2564 | the linker. The simplest way to do so is by providing @option{--with-as} | |
2565 | and @option{--with-ld} to @file{configure}, e.g.@: | |
71b96724 | 2566 | |
3ab51846 | 2567 | @smallexample |
8c085f6f JJ |
2568 | configure --with-as=/opt/ctl/bin/cam --with-ld=/opt/ctl/bin/cld \ |
2569 | --enable-languages=c | |
3ab51846 | 2570 | @end smallexample |
71b96724 | 2571 | |
cc11cc9b | 2572 | The comparison test at the end of the bootstrapping process fails on Unicos/Mk |
71b96724 RL |
2573 | because the assembler inserts timestamps into object files. You should |
2574 | be able to work around this by doing @samp{make all} after getting this | |
2575 | failure. | |
2576 | ||
b8df899a | 2577 | @html |
b8db17af | 2578 | <hr /> |
b8df899a | 2579 | @end html |
5a4c9b10 | 2580 | @heading @anchor{arc-x-elf}arc-*-elf |
b8df899a JM |
2581 | Argonaut ARC processor. |
2582 | This configuration is intended for embedded systems. | |
2583 | ||
2584 | @html | |
b8db17af | 2585 | <hr /> |
b8df899a | 2586 | @end html |
5a4c9b10 GP |
2587 | @heading @anchor{arm-x-elf}arm-*-elf |
2588 | @heading @anchor{xscale-x-x}xscale-*-* | |
34e8290f NC |
2589 | ARM-family processors. Subtargets that use the ELF object format |
2590 | require GNU binutils 2.13 or newer. Such subtargets include: | |
2591 | @code{arm-*-freebsd}, @code{arm-*-netbsdelf}, @code{arm-*-*linux}, | |
2592 | @code{arm-*-rtems} and @code{arm-*-kaos}. | |
2593 | ||
2594 | @html | |
2595 | <hr /> | |
2596 | @end html | |
5a4c9b10 | 2597 | @heading @anchor{arm-x-coff}arm-*-coff |
61aeb06f | 2598 | ARM-family processors. Note that there are two different varieties |
34e8290f NC |
2599 | of PE format subtarget supported: @code{arm-wince-pe} and |
2600 | @code{arm-pe} as well as a standard COFF target @code{arm-*-coff}. | |
2601 | ||
34e8290f NC |
2602 | @html |
2603 | <hr /> | |
2604 | @end html | |
5a4c9b10 | 2605 | @heading @anchor{arm-x-aout}arm-*-aout |
34e8290f NC |
2606 | ARM-family processors. These targets support the AOUT file format: |
2607 | @code{arm-*-aout}, @code{arm-*-netbsd}. | |
476c334e | 2608 | |
f42974dc | 2609 | @html |
b8db17af | 2610 | <hr /> |
f42974dc | 2611 | @end html |
ef88b07d | 2612 | @heading @anchor{avr}avr |
f42974dc | 2613 | |
b8df899a | 2614 | ATMEL AVR-family micro controllers. These are used in embedded |
ca52d046 GP |
2615 | applications. There are no standard Unix configurations. |
2616 | @ifnothtml | |
7f970b70 | 2617 | @xref{AVR Options,, AVR Options, gcc, Using the GNU Compiler |
ca52d046 GP |
2618 | Collection (GCC)}, |
2619 | @end ifnothtml | |
98999d8b | 2620 | @ifhtml |
ca52d046 | 2621 | See ``AVR Options'' in the main manual |
98999d8b | 2622 | @end ifhtml |
ca52d046 | 2623 | for the list of supported MCU types. |
b8df899a | 2624 | |
161d7b59 | 2625 | Use @samp{configure --target=avr --enable-languages="c"} to configure GCC@. |
f42974dc DW |
2626 | |
2627 | Further installation notes and other useful information about AVR tools | |
2628 | can also be obtained from: | |
2629 | ||
2630 | @itemize @bullet | |
2631 | @item | |
1d7887ca | 2632 | @uref{http://www.nongnu.org/avr/,,http://www.nongnu.org/avr/} |
de7999ba | 2633 | @item |
d1a86812 | 2634 | @uref{http://home.overta.ru/users/denisc/,,http://home.overta.ru/users/denisc/} |
f42974dc | 2635 | @item |
d1a86812 | 2636 | @uref{http://www.amelek.gda.pl/avr/,,http://www.amelek.gda.pl/avr/} |
f42974dc DW |
2637 | @end itemize |
2638 | ||
de7999ba | 2639 | We @emph{strongly} recommend using binutils 2.13 or newer. |
f42974dc DW |
2640 | |
2641 | The following error: | |
3ab51846 | 2642 | @smallexample |
f42974dc | 2643 | Error: register required |
3ab51846 | 2644 | @end smallexample |
f42974dc DW |
2645 | |
2646 | indicates that you should upgrade to a newer version of the binutils. | |
2647 | ||
0d4a78eb BS |
2648 | @html |
2649 | <hr /> | |
2650 | @end html | |
2651 | @heading @anchor{bfin}Blackfin | |
2652 | ||
2653 | The Blackfin processor, an Analog Devices DSP. | |
2654 | @ifnothtml | |
7f970b70 AM |
2655 | @xref{Blackfin Options,, Blackfin Options, gcc, Using the GNU Compiler |
2656 | Collection (GCC)}, | |
0d4a78eb BS |
2657 | @end ifnothtml |
2658 | @ifhtml | |
2659 | See ``Blackfin Options'' in the main manual | |
2660 | @end ifhtml | |
2661 | ||
2662 | More information, and a version of binutils with support for this processor, | |
2663 | is available at @uref{http://blackfin.uclinux.org} | |
2664 | ||
0132e321 | 2665 | @html |
b8db17af | 2666 | <hr /> |
0132e321 MH |
2667 | @end html |
2668 | @heading @anchor{c4x}c4x | |
2669 | ||
2670 | Texas Instruments TMS320C3x and TMS320C4x Floating Point Digital Signal | |
2671 | Processors. These are used in embedded applications. There are no | |
d8393f64 GP |
2672 | standard Unix configurations. |
2673 | @ifnothtml | |
7f970b70 AM |
2674 | @xref{TMS320C3x/C4x Options,, TMS320C3x/C4x Options, gcc, Using the |
2675 | GNU Compiler Collection (GCC)}, | |
d8393f64 | 2676 | @end ifnothtml |
98999d8b | 2677 | @ifhtml |
d8393f64 | 2678 | See ``TMS320C3x/C4x Options'' in the main manual |
98999d8b | 2679 | @end ifhtml |
d8393f64 | 2680 | for the list of supported MCU types. |
0132e321 MH |
2681 | |
2682 | GCC can be configured as a cross compiler for both the C3x and C4x | |
2683 | architectures on the same system. Use @samp{configure --target=c4x | |
2684 | --enable-languages="c,c++"} to configure. | |
2685 | ||
2686 | ||
2687 | Further installation notes and other useful information about C4x tools | |
2688 | can also be obtained from: | |
2689 | ||
2690 | @itemize @bullet | |
2691 | @item | |
d8393f64 | 2692 | @uref{http://www.elec.canterbury.ac.nz/c4x/,,http://www.elec.canterbury.ac.nz/c4x/} |
0132e321 MH |
2693 | @end itemize |
2694 | ||
0b85d816 | 2695 | @html |
b8db17af | 2696 | <hr /> |
0b85d816 HPN |
2697 | @end html |
2698 | @heading @anchor{cris}CRIS | |
2699 | ||
2700 | CRIS is the CPU architecture in Axis Communications ETRAX system-on-a-chip | |
2701 | series. These are used in embedded applications. | |
2702 | ||
2703 | @ifnothtml | |
7f970b70 | 2704 | @xref{CRIS Options,, CRIS Options, gcc, Using the GNU Compiler |
0b85d816 HPN |
2705 | Collection (GCC)}, |
2706 | @end ifnothtml | |
2707 | @ifhtml | |
2708 | See ``CRIS Options'' in the main manual | |
2709 | @end ifhtml | |
2710 | for a list of CRIS-specific options. | |
2711 | ||
2712 | There are a few different CRIS targets: | |
2713 | @table @code | |
2714 | @item cris-axis-aout | |
2715 | Old target. Includes a multilib for the @samp{elinux} a.out-based | |
2716 | target. No multilibs for newer architecture variants. | |
2717 | @item cris-axis-elf | |
2718 | Mainly for monolithic embedded systems. Includes a multilib for the | |
2719 | @samp{v10} core used in @samp{ETRAX 100 LX}. | |
2720 | @item cris-axis-linux-gnu | |
2721 | A GNU/Linux port for the CRIS architecture, currently targeting | |
2722 | @samp{ETRAX 100 LX} by default. | |
2723 | @end table | |
2724 | ||
2725 | For @code{cris-axis-aout} and @code{cris-axis-elf} you need binutils 2.11 | |
2726 | or newer. For @code{cris-axis-linux-gnu} you need binutils 2.12 or newer. | |
2727 | ||
2728 | Pre-packaged tools can be obtained from | |
2729 | @uref{ftp://ftp.axis.com/pub/axis/tools/cris/compiler-kit/}. More | |
2730 | information about this platform is available at | |
2731 | @uref{http://developer.axis.com/}. | |
2732 | ||
53054e77 PW |
2733 | @html |
2734 | <hr /> | |
2735 | @end html | |
2736 | @heading @anchor{crx}CRX | |
2737 | ||
2738 | The CRX CompactRISC architecture is a low-power 32-bit architecture with | |
2739 | fast context switching and architectural extensibility features. | |
2740 | ||
2741 | @ifnothtml | |
2742 | @xref{CRX Options,, CRX Options, gcc, Using and Porting the GNU Compiler | |
2743 | Collection (GCC)}, | |
2744 | @end ifnothtml | |
2745 | ||
2746 | @ifhtml | |
2747 | See ``CRX Options'' in the main manual for a list of CRX-specific options. | |
2748 | @end ifhtml | |
2749 | ||
2750 | Use @samp{configure --target=crx-elf --enable-languages=c,c++} to configure | |
2751 | GCC@ for building a CRX cross-compiler. The option @samp{--target=crx-elf} | |
2752 | is also used to build the @samp{newlib} C library for CRX. | |
2753 | ||
2754 | It is also possible to build libstdc++-v3 for the CRX architecture. This | |
a4d05547 | 2755 | needs to be done in a separate step with the following configure settings: |
53054e77 PW |
2756 | @samp{gcc/libstdc++-v3/configure --host=crx-elf --with-newlib |
2757 | --enable-sjlj-exceptions --enable-cxx-flags='-fexceptions -frtti'} | |
2758 | ||
f42974dc | 2759 | @html |
b8db17af | 2760 | <hr /> |
f42974dc | 2761 | @end html |
ef88b07d | 2762 | @heading @anchor{dos}DOS |
f42974dc | 2763 | |
962e6e00 | 2764 | Please have a look at the @uref{binaries.html,,binaries page}. |
f42974dc | 2765 | |
f0523f02 | 2766 | You cannot install GCC by itself on MSDOS; it will not compile under |
f85b8d1a JM |
2767 | any MSDOS compiler except itself. You need to get the complete |
2768 | compilation package DJGPP, which includes binaries as well as sources, | |
2769 | and includes all the necessary compilation tools and libraries. | |
2770 | ||
021c4bfd | 2771 | @html |
b8db17af | 2772 | <hr /> |
021c4bfd | 2773 | @end html |
5a4c9b10 | 2774 | @heading @anchor{x-x-freebsd}*-*-freebsd* |
021c4bfd | 2775 | |
f08dc6c1 | 2776 | The version of binutils installed in @file{/usr/bin} probably works with |
8a36672b | 2777 | this release of GCC@. However, on FreeBSD 4, bootstrapping against the |
f08dc6c1 LR |
2778 | latest FSF binutils is known to improve overall testsuite results; and, |
2779 | on FreeBSD/alpha, using binutils 2.14 or later is required to build libjava. | |
021c4bfd | 2780 | |
6a1dbbaf | 2781 | Support for FreeBSD 1 was discontinued in GCC 3.2. |
c7bdf0a6 | 2782 | |
f08dc6c1 LR |
2783 | Support for FreeBSD 2 will be discontinued after GCC 3.4. The |
2784 | following was true for GCC 3.1 but the current status is unknown. | |
c7bdf0a6 | 2785 | For FreeBSD 2 or any mutant a.out versions of FreeBSD 3: All |
021c4bfd RO |
2786 | configuration support and files as shipped with GCC 2.95 are still in |
2787 | place. FreeBSD 2.2.7 has been known to bootstrap completely; however, | |
2788 | it is unknown which version of binutils was used (it is assumed that it | |
2789 | was the system copy in @file{/usr/bin}) and C++ EH failures were noted. | |
2790 | ||
2791 | For FreeBSD using the ELF file format: DWARF 2 debugging is now the | |
2792 | default for all CPU architectures. It had been the default on | |
2793 | FreeBSD/alpha since its inception. You may use @option{-gstabs} instead | |
2794 | of @option{-g}, if you really want the old debugging format. There are | |
2795 | no known issues with mixing object files and libraries with different | |
2796 | debugging formats. Otherwise, this release of GCC should now match more | |
8a36672b | 2797 | of the configuration used in the stock FreeBSD configuration of GCC@. In |
021c4bfd RO |
2798 | particular, @option{--enable-threads} is now configured by default. |
2799 | However, as a general user, do not attempt to replace the system | |
2800 | compiler with this release. Known to bootstrap and check with good | |
f08dc6c1 | 2801 | results on FreeBSD 4.9-STABLE and 5-CURRENT@. In the past, known to |
e4e7d312 | 2802 | bootstrap and check with good results on FreeBSD 3.0, 3.4, 4.0, 4.2, |
f08dc6c1 | 2803 | 4.3, 4.4, 4.5, 4.8-STABLE@. |
46fc709d LR |
2804 | |
2805 | In principle, @option{--enable-threads} is now compatible with | |
2806 | @option{--enable-libgcj} on FreeBSD@. However, it has only been built | |
e4e7d312 | 2807 | and tested on @samp{i386-*-freebsd[45]} and @samp{alpha-*-freebsd[45]}. |
8c085f6f | 2808 | The static |
6b976d99 LR |
2809 | library may be incorrectly built (symbols are missing at link time). |
2810 | There is a rare timing-based startup hang (probably involves an | |
c0478a66 | 2811 | assumption about the thread library). Multi-threaded boehm-gc (required for |
46fc709d | 2812 | libjava) exposes severe threaded signal-handling bugs on FreeBSD before |
e4e7d312 | 2813 | 4.5-RELEASE@. Other CPU architectures |
46fc709d LR |
2814 | supported by FreeBSD will require additional configuration tuning in, at |
2815 | the very least, both boehm-gc and libffi. | |
021c4bfd | 2816 | |
bc3a44db LR |
2817 | Shared @file{libgcc_s.so} is now built and installed by default. |
2818 | ||
f42974dc | 2819 | @html |
b8db17af | 2820 | <hr /> |
f42974dc | 2821 | @end html |
ef88b07d | 2822 | @heading @anchor{h8300-hms}h8300-hms |
71c6b994 | 2823 | Renesas H8/300 series of processors. |
f42974dc | 2824 | |
962e6e00 | 2825 | Please have a look at the @uref{binaries.html,,binaries page}. |
f42974dc | 2826 | |
b8df899a JM |
2827 | The calling convention and structure layout has changed in release 2.6. |
2828 | All code must be recompiled. The calling convention now passes the | |
2829 | first three arguments in function calls in registers. Structures are no | |
2830 | longer a multiple of 2 bytes. | |
2831 | ||
f42974dc | 2832 | @html |
b8db17af | 2833 | <hr /> |
f42974dc | 2834 | @end html |
5a4c9b10 | 2835 | @heading @anchor{hppa-hp-hpux}hppa*-hp-hpux* |
6a1dbbaf | 2836 | Support for HP-UX version 9 and older was discontinued in GCC 3.4. |
f42974dc | 2837 | |
dbad5e72 SE |
2838 | We require using gas/binutils on all hppa platforms; |
2839 | you may encounter a variety of problems if you try to use the HP assembler. | |
f42974dc DW |
2840 | |
2841 | Specifically, @option{-g} does not work on HP-UX (since that system | |
d711cf67 | 2842 | uses a peculiar debugging format which GCC does not know about), unless |
8a36672b | 2843 | you use GAS and GDB@. It may be helpful to configure GCC with the |
38209993 | 2844 | @uref{./configure.html#with-gnu-as,,@option{--with-gnu-as}} and |
8a36672b | 2845 | @option{--with-as=@dots{}} options to ensure that GCC can find GAS@. |
f42974dc | 2846 | |
08b3d104 | 2847 | If you wish to use the pa-risc 2.0 architecture support with a 32-bit |
dbad5e72 | 2848 | runtime, you must use gas/binutils 2.11 or newer. |
f42974dc | 2849 | |
d5355cb2 JDA |
2850 | There are two default scheduling models for instructions. These are |
2851 | PROCESSOR_7100LC and PROCESSOR_8000. They are selected from the pa-risc | |
2852 | architecture specified for the target machine when configuring. | |
2853 | PROCESSOR_8000 is the default. PROCESSOR_7100LC is selected when | |
2854 | the target is a @samp{hppa1*} machine. | |
806bf413 JDA |
2855 | |
2856 | The PROCESSOR_8000 model is not well suited to older processors. Thus, | |
2857 | it is important to completely specify the machine architecture when | |
2858 | configuring if you want a model other than PROCESSOR_8000. The macro | |
2859 | TARGET_SCHED_DEFAULT can be defined in BOOT_CFLAGS if a different | |
2860 | default scheduling model is desired. | |
2861 | ||
25f710ba | 2862 | As of GCC 4.0, GCC uses the UNIX 95 namespace for HP-UX 10.10 |
d711cf67 JDA |
2863 | through 11.00, and the UNIX 98 namespace for HP-UX 11.11 and later. |
2864 | This namespace change might cause problems when bootstrapping with | |
2865 | an earlier version of GCC or the HP compiler as essentially the same | |
2866 | namespace is required for an entire build. This problem can be avoided | |
2867 | in a number of ways. With HP cc, @env{UNIX_STD} can be set to @samp{95} | |
2868 | or @samp{98}. Another way is to add an appropriate set of predefines | |
2869 | to @env{CC}. The description for the @option{munix=} option contains | |
2870 | a list of the predefines used with each standard. | |
2871 | ||
dcf966bd JDA |
2872 | As of GCC 4.1, @env{DWARF2} exception handling is available on HP-UX. |
2873 | It is now the default. This exposed a bug in the handling of data | |
2874 | relocations in the GAS assembler. The handling of 64-bit data relocations | |
2875 | was seriously broken, affecting debugging and exception support on all | |
353f74e8 | 2876 | @samp{hppa64-*-*} targets. Under some circumstances, 32-bit data relocations |
dcf966bd JDA |
2877 | could also be handled incorrectly. This problem is fixed in GAS version |
2878 | 2.16.91 20051125. | |
2879 | ||
2880 | GCC versions prior to 4.1 incorrectly passed and returned complex | |
2881 | values. They are now passed in the same manner as aggregates. | |
2882 | ||
021c4bfd | 2883 | More specific information to @samp{hppa*-hp-hpux*} targets follows. |
f42974dc | 2884 | |
f42974dc | 2885 | @html |
b8db17af | 2886 | <hr /> |
f42974dc | 2887 | @end html |
5a4c9b10 | 2888 | @heading @anchor{hppa-hp-hpux10}hppa*-hp-hpux10 |
f42974dc | 2889 | |
f9047ed3 | 2890 | For hpux10.20, we @emph{highly} recommend you pick up the latest sed patch |
161d7b59 | 2891 | @code{PHCO_19798} from HP@. HP has two sites which provide patches free of |
f42974dc DW |
2892 | charge: |
2893 | ||
2894 | @itemize @bullet | |
2895 | @item | |
2896 | @html | |
f401d0f5 | 2897 | <a href="http://us.itrc.hp.com/service/home/home.do">US, Canada, Asia-Pacific, and |
f42974dc DW |
2898 | Latin-America</a> |
2899 | @end html | |
2900 | @ifnothtml | |
f401d0f5 JDA |
2901 | @uref{http://us.itrc.hp.com/service/home/home.do,,} US, Canada, Asia-Pacific, |
2902 | and Latin-America. | |
f42974dc DW |
2903 | @end ifnothtml |
2904 | @item | |
f401d0f5 | 2905 | @uref{http://europe.itrc.hp.com/service/home/home.do,,} Europe. |
f42974dc DW |
2906 | @end itemize |
2907 | ||
2aea0b53 ZW |
2908 | The HP assembler on these systems has some problems. Most notably the |
2909 | assembler inserts timestamps into each object file it creates, causing | |
cc11cc9b PB |
2910 | the 3-stage comparison test to fail during a bootstrap. |
2911 | You should be able to continue by saying @samp{make all-host all-target} | |
2912 | after getting the failure from @samp{make}. | |
f42974dc | 2913 | |
25f710ba | 2914 | GCC 4.0 requires CVS binutils as of April 28, 2004 or later. Earlier |
9a55eab3 JDA |
2915 | versions require binutils 2.8 or later. |
2916 | ||
25f710ba | 2917 | The C++ ABI has changed incompatibly in GCC 4.0. COMDAT subspaces are |
9a55eab3 JDA |
2918 | used for one-only code and data. This resolves many of the previous |
2919 | problems in using C++ on this target. However, the ABI is not compatible | |
2920 | with the one implemented under HP-UX 11 using secondary definitions. | |
f42974dc DW |
2921 | |
2922 | @html | |
b8db17af | 2923 | <hr /> |
f42974dc | 2924 | @end html |
5a4c9b10 | 2925 | @heading @anchor{hppa-hp-hpux11}hppa*-hp-hpux11 |
f42974dc | 2926 | |
c5124497 JDA |
2927 | GCC 3.0 and up support HP-UX 11. GCC 2.95.x is not supported and cannot |
2928 | be used to compile GCC 3.0 and up. | |
f269f54f | 2929 | |
c5124497 | 2930 | Refer to @uref{binaries.html,,binaries} for information about obtaining |
8a36672b JM |
2931 | precompiled GCC binaries for HP-UX@. Precompiled binaries must be obtained |
2932 | to build the Ada language as it can't be bootstrapped using C@. Ada is | |
c5124497 JDA |
2933 | only available for the 32-bit PA-RISC runtime. The libffi and libjava |
2934 | haven't been ported to HP-UX and don't build. | |
f401d0f5 | 2935 | |
02809848 PB |
2936 | Starting with GCC 3.4 an ISO C compiler is required to bootstrap. The |
2937 | bundled compiler supports only traditional C; you will need either HP's | |
2938 | unbundled compiler, or a binary distribution of GCC@. | |
2939 | ||
c5124497 JDA |
2940 | It is possible to build GCC 3.3 starting with the bundled HP compiler, |
2941 | but the process requires several steps. GCC 3.3 can then be used to | |
2942 | build later versions. The fastjar program contains ISO C code and | |
2943 | can't be built with the HP bundled compiler. This problem can be | |
2944 | avoided by not building the Java language. For example, use the | |
2945 | @option{--enable-languages="c,c++,f77,objc"} option in your configure | |
2946 | command. | |
08b3d104 | 2947 | |
c5124497 JDA |
2948 | There are several possible approaches to building the distribution. |
2949 | Binutils can be built first using the HP tools. Then, the GCC | |
2950 | distribution can be built. The second approach is to build GCC | |
8a36672b | 2951 | first using the HP tools, then build binutils, then rebuild GCC@. |
c5124497 JDA |
2952 | There have been problems with various binary distributions, so it |
2953 | is best not to start from a binary distribution. | |
2954 | ||
2955 | On 64-bit capable systems, there are two distinct targets. Different | |
2956 | installation prefixes must be used if both are to be installed on | |
2957 | the same system. The @samp{hppa[1-2]*-hp-hpux11*} target generates code | |
2958 | for the 32-bit PA-RISC runtime architecture and uses the HP linker. | |
2959 | The @samp{hppa64-hp-hpux11*} target generates 64-bit code for the | |
2960 | PA-RISC 2.0 architecture. The HP and GNU linkers are both supported | |
2961 | for this target. | |
2962 | ||
2963 | The script config.guess now selects the target type based on the compiler | |
2964 | detected during configuration. You must define @env{PATH} or @env{CC} so | |
2965 | that configure finds an appropriate compiler for the initial bootstrap. | |
2966 | When @env{CC} is used, the definition should contain the options that are | |
2967 | needed whenever @env{CC} is used. | |
2968 | ||
2969 | Specifically, options that determine the runtime architecture must be | |
2970 | in @env{CC} to correctly select the target for the build. It is also | |
f0eb93a8 | 2971 | convenient to place many other compiler options in @env{CC}. For example, |
c5124497 JDA |
2972 | @env{CC="cc -Ac +DA2.0W -Wp,-H16376 -D_CLASSIC_TYPES -D_HPUX_SOURCE"} |
2973 | can be used to bootstrap the GCC 3.3 branch with the HP compiler in | |
2974 | 64-bit K&R/bundled mode. The @option{+DA2.0W} option will result in | |
2975 | the automatic selection of the @samp{hppa64-hp-hpux11*} target. The | |
2976 | macro definition table of cpp needs to be increased for a successful | |
2977 | build with the HP compiler. _CLASSIC_TYPES and _HPUX_SOURCE need to | |
2978 | be defined when building with the bundled compiler, or when using the | |
2979 | @option{-Ac} option. These defines aren't necessary with @option{-Ae}. | |
8c085f6f | 2980 | |
c5124497 JDA |
2981 | It is best to explicitly configure the @samp{hppa64-hp-hpux11*} target |
2982 | with the @option{--with-ld=@dots{}} option. This overrides the standard | |
2983 | search for ld. The two linkers supported on this target require different | |
2984 | commands. The default linker is determined during configuration. As a | |
2985 | result, it's not possible to switch linkers in the middle of a GCC build. | |
2986 | This has been been reported to sometimes occur in unified builds of | |
8a36672b | 2987 | binutils and GCC@. |
c5124497 | 2988 | |
9a55eab3 | 2989 | GCC 3.0 through 3.2 require binutils 2.11 or above. GCC 3.3 through |
25f710ba | 2990 | GCC 4.0 require binutils 2.14 or later. |
c5124497 JDA |
2991 | |
2992 | Although the HP assembler can be used for an initial build, it shouldn't | |
2993 | be used with any languages other than C and perhaps Fortran due to its | |
2994 | many limitations. For example, it does not support weak symbols or alias | |
2995 | definitions. As a result, explicit template instantiations are required | |
2996 | when using C++. This makes it difficult if not impossible to build many | |
2997 | C++ applications. You can't generate debugging information when using | |
cc11cc9b | 2998 | the HP assembler. Finally, bootstrapping fails in the final |
c5124497 JDA |
2999 | comparison of object modules due to the time stamps that it inserts into |
3000 | the modules. The bootstrap can be continued from this point with | |
cc11cc9b | 3001 | @samp{make all-host all-target}. |
c5124497 JDA |
3002 | |
3003 | A recent linker patch must be installed for the correct operation of | |
3004 | GCC 3.3 and later. @code{PHSS_26559} and @code{PHSS_24304} are the | |
3005 | oldest linker patches that are known to work. They are for HP-UX | |
3006 | 11.00 and 11.11, respectively. @code{PHSS_24303}, the companion to | |
3007 | @code{PHSS_24304}, might be usable but it hasn't been tested. These | |
3008 | patches have been superseded. Consult the HP patch database to obtain | |
3009 | the currently recommended linker patch for your system. | |
3010 | ||
3011 | The patches are necessary for the support of weak symbols on the | |
3012 | 32-bit port, and for the running of initializers and finalizers. Weak | |
3013 | symbols are implemented using SOM secondary definition symbols. Prior | |
3014 | to HP-UX 11, there are bugs in the linker support for secondary symbols. | |
3015 | The patches correct a problem of linker core dumps creating shared | |
3016 | libraries containing secondary symbols, as well as various other | |
3017 | linking issues involving secondary symbols. | |
3018 | ||
3019 | GCC 3.3 uses the ELF DT_INIT_ARRAY and DT_FINI_ARRAY capabilities to | |
3020 | run initializers and finalizers on the 64-bit port. The 32-bit port | |
3021 | uses the linker @option{+init} and @option{+fini} options for the same | |
3022 | purpose. The patches correct various problems with the +init/+fini | |
3023 | options, including program core dumps. Binutils 2.14 corrects a | |
3024 | problem on the 64-bit port resulting from HP's non-standard use of | |
3025 | the .init and .fini sections for array initializers and finalizers. | |
f401d0f5 JDA |
3026 | |
3027 | There are a number of issues to consider in selecting which linker to | |
c5124497 | 3028 | use with the 64-bit port. The GNU 64-bit linker can only create dynamic |
f401d0f5 JDA |
3029 | binaries. The @option{-static} option causes linking with archive |
3030 | libraries but doesn't produce a truly static binary. Dynamic binaries | |
3031 | still require final binding by the dynamic loader to resolve a set of | |
3032 | dynamic-loader-defined symbols. The default behavior of the HP linker | |
3033 | is the same as the GNU linker. However, it can generate true 64-bit | |
3034 | static binaries using the @option{+compat} option. | |
3035 | ||
3036 | The HP 64-bit linker doesn't support linkonce semantics. As a | |
3037 | result, C++ programs have many more sections than they should. | |
3038 | ||
3039 | The GNU 64-bit linker has some issues with shared library support | |
3040 | and exceptions. As a result, we only support libgcc in archive | |
3041 | format. For similar reasons, dwarf2 unwind and exception support | |
3042 | are disabled. The GNU linker also has problems creating binaries | |
3043 | with @option{-static}. It doesn't provide stubs for internal | |
3044 | calls to global functions in shared libraries, so these calls | |
3045 | can't be overloaded. | |
581d9404 | 3046 | |
c5124497 JDA |
3047 | Thread support is not implemented in GCC 3.0 through 3.2, so the |
3048 | @option{--enable-threads} configure option does not work. In 3.3 | |
3049 | and later, POSIX threads are supported. The optional DCE thread | |
3050 | library is not supported. | |
581d9404 JDA |
3051 | |
3052 | This port still is undergoing significant development. | |
08b3d104 | 3053 | |
f42974dc | 3054 | @html |
b8db17af | 3055 | <hr /> |
f42974dc | 3056 | @end html |
5a4c9b10 | 3057 | @heading @anchor{x-x-linux-gnu}*-*-linux-gnu |
f42974dc | 3058 | |
9e80ada7 PE |
3059 | Versions of libstdc++-v3 starting with 3.2.1 require bugfixes present |
3060 | in glibc 2.2.5 and later. More information is available in the | |
3061 | libstdc++-v3 documentation. | |
3062 | ||
b8df899a | 3063 | @html |
b8db17af | 3064 | <hr /> |
b8df899a | 3065 | @end html |
5a4c9b10 | 3066 | @heading @anchor{ix86-x-linuxaout}i?86-*-linux*aout |
b8df899a | 3067 | Use this configuration to generate @file{a.out} binaries on Linux-based |
41ca24de | 3068 | GNU systems. This configuration is being superseded. |
b8df899a | 3069 | |
f42974dc | 3070 | @html |
b8db17af | 3071 | <hr /> |
f42974dc | 3072 | @end html |
5a4c9b10 | 3073 | @heading @anchor{ix86-x-linux}i?86-*-linux* |
f42974dc | 3074 | |
1ea6f4c8 DH |
3075 | As of GCC 3.3, binutils 2.13.1 or later is required for this platform. |
3076 | See @uref{http://gcc.gnu.org/PR10877,,bug 10877} for more information. | |
f42974dc DW |
3077 | |
3078 | If you receive Signal 11 errors when building on GNU/Linux, then it is | |
3079 | possible you have a hardware problem. Further information on this can be | |
3080 | found on @uref{http://www.bitwizard.nl/sig11/,,www.bitwizard.nl}. | |
3081 | ||
3082 | @html | |
b8db17af | 3083 | <hr /> |
f42974dc | 3084 | @end html |
d8fcd085 | 3085 | @heading @anchor{ix86-x-sco32v5}i?86-*-sco3.2v5* |
b8df899a | 3086 | Use this for the SCO OpenServer Release 5 family of operating systems. |
f42974dc DW |
3087 | |
3088 | Unlike earlier versions of GCC, the ability to generate COFF with this | |
3089 | target is no longer provided. | |
3090 | ||
021c4bfd | 3091 | Earlier versions of GCC emitted DWARF 1 when generating ELF to allow |
f42974dc | 3092 | the system debugger to be used. That support was too burdensome to |
021c4bfd | 3093 | maintain. GCC now emits only DWARF 2 for this target. This means you |
f42974dc | 3094 | may use either the UDK debugger or GDB to debug programs built by this |
161d7b59 | 3095 | version of GCC@. |
f42974dc | 3096 | |
ac24fc99 KJ |
3097 | GCC is now only supported on releases 5.0.4 and later, and requires that |
3098 | you install Support Level Supplement OSS646B or later, and Support Level | |
3099 | Supplement OSS631C or later. If you are using release 5.0.7 of | |
3100 | OpenServer, you must have at least the first maintenance pack installed | |
3101 | (this includes the relevant portions of OSS646). OSS646, also known as | |
78466c0e | 3102 | the ``Execution Environment Update'', provides updated link editors and |
ac24fc99 KJ |
3103 | assemblers, as well as updated standard C and math libraries. The C |
3104 | startup modules are also updated to support the System V gABI draft, and | |
0b4be7de | 3105 | GCC relies on that behavior. OSS631 provides a collection of commonly |
ac24fc99 KJ |
3106 | used open source libraries, some of which GCC depends on (such as GNU |
3107 | gettext and zlib). SCO OpenServer Release 5.0.7 has all of this built | |
3108 | in by default, but OSS631C and later also apply to that release. Please | |
3109 | visit | |
3110 | @uref{ftp://ftp.sco.com/pub/openserver5,,ftp://ftp.sco.com/pub/openserver5} | |
3111 | for the latest versions of these (and other potentially useful) | |
3112 | supplements. | |
3113 | ||
3114 | Although there is support for using the native assembler, it is | |
3115 | recommended that you configure GCC to use the GNU assembler. You do | |
3116 | this by using the flags | |
3117 | @uref{./configure.html#with-gnu-as,,@option{--with-gnu-as}}. You should | |
3118 | use a modern version of GNU binutils. Version 2.13.2.1 was used for all | |
3119 | testing. In general, only the @option{--with-gnu-as} option is tested. | |
3120 | A modern bintuils (as well as a plethora of other development related | |
3121 | GNU utilities) can be found in Support Level Supplement OSS658A, the | |
78466c0e JM |
3122 | ``GNU Development Tools'' package. See the SCO web and ftp sites for details. |
3123 | That package also contains the currently ``officially supported'' version of | |
daf2f129 | 3124 | GCC, version 2.95.3. It is useful for bootstrapping this version. |
f42974dc | 3125 | |
8f47c084 JM |
3126 | @html |
3127 | <hr /> | |
3128 | @end html | |
d8fcd085 | 3129 | @heading @anchor{ix86-x-solaris210}i?86-*-solaris2.10 |
8f47c084 JM |
3130 | Use this for Solaris 10 or later on x86 and x86-64 systems. This |
3131 | configuration is supported by GCC 4.0 and later versions only. | |
3132 | ||
3133 | It is recommended that you configure GCC to use the GNU assembler in | |
3134 | @file{/usr/sfw/bin/gas} but the Sun linker, using the options | |
3135 | @option{--with-gnu-as --with-as=/usr/sfw/bin/gas --without-gnu-ld | |
3136 | --with-ld=/usr/ccs/bin/ld}. | |
3137 | ||
f42974dc | 3138 | @html |
b8db17af | 3139 | <hr /> |
f42974dc | 3140 | @end html |
5a4c9b10 | 3141 | @heading @anchor{ix86-x-udk}i?86-*-udk |
f42974dc DW |
3142 | |
3143 | This target emulates the SCO Universal Development Kit and requires that | |
f9047ed3 JM |
3144 | package be installed. (If it is installed, you will have a |
3145 | @file{/udk/usr/ccs/bin/cc} file present.) It's very much like the | |
b953cc4b | 3146 | @samp{i?86-*-unixware7*} target |
f42974dc DW |
3147 | but is meant to be used when hosting on a system where UDK isn't the |
3148 | default compiler such as OpenServer 5 or Unixware 2. This target will | |
f9047ed3 | 3149 | generate binaries that will run on OpenServer, Unixware 2, or Unixware 7, |
161d7b59 | 3150 | with the same warnings and caveats as the SCO UDK@. |
f42974dc | 3151 | |
f42974dc DW |
3152 | This target is a little tricky to build because we have to distinguish |
3153 | it from the native tools (so it gets headers, startups, and libraries | |
f9047ed3 | 3154 | from the right place) while making the tools not think we're actually |
f42974dc DW |
3155 | building a cross compiler. The easiest way to do this is with a configure |
3156 | command like this: | |
3157 | ||
3ab51846 | 3158 | @smallexample |
8c085f6f JJ |
3159 | CC=/udk/usr/ccs/bin/cc @var{/your/path/to}/gcc/configure \ |
3160 | --host=i686-pc-udk --target=i686-pc-udk --program-prefix=udk- | |
3ab51846 | 3161 | @end smallexample |
f42974dc | 3162 | |
6cfb3f16 | 3163 | @emph{You should substitute @samp{i686} in the above command with the appropriate |
f42974dc DW |
3164 | processor for your host.} |
3165 | ||
cc11cc9b | 3166 | After the usual @samp{make} and |
021c4bfd | 3167 | @samp{make install}, you can then access the UDK-targeted GCC |
38209993 LG |
3168 | tools by adding @command{udk-} before the commonly known name. For |
3169 | example, to invoke the C compiler, you would use @command{udk-gcc}. | |
3170 | They will coexist peacefully with any native-target GCC tools you may | |
3171 | have installed. | |
f42974dc DW |
3172 | |
3173 | ||
b499d9ab | 3174 | @html |
b8db17af | 3175 | <hr /> |
b499d9ab | 3176 | @end html |
5a4c9b10 | 3177 | @heading @anchor{ia64-x-linux}ia64-*-linux |
b499d9ab JJ |
3178 | IA-64 processor (also known as IPF, or Itanium Processor Family) |
3179 | running GNU/Linux. | |
3180 | ||
443728bb L |
3181 | If you are using the installed system libunwind library with |
3182 | @option{--with-system-libunwind}, then you must use libunwind 0.98 or | |
3183 | later. | |
bcd11e5e | 3184 | |
b499d9ab JJ |
3185 | None of the following versions of GCC has an ABI that is compatible |
3186 | with any of the other versions in this list, with the exception that | |
3187 | Red Hat 2.96 and Trillian 000171 are compatible with each other: | |
41ca24de | 3188 | 3.1, 3.0.2, 3.0.1, 3.0, Red Hat 2.96, and Trillian 000717. |
b499d9ab | 3189 | This primarily affects C++ programs and programs that create shared libraries. |
41ca24de DH |
3190 | GCC 3.1 or later is recommended for compiling linux, the kernel. |
3191 | As of version 3.1 GCC is believed to be fully ABI compliant, and hence no | |
3192 | more major ABI changes are expected. | |
b499d9ab | 3193 | |
959a73a4 DH |
3194 | @html |
3195 | <hr /> | |
3196 | @end html | |
5a4c9b10 | 3197 | @heading @anchor{ia64-x-hpux}ia64-*-hpux* |
8a36672b JM |
3198 | Building GCC on this target requires the GNU Assembler. The bundled HP |
3199 | assembler will not work. To prevent GCC from using the wrong assembler, | |
959a73a4 DH |
3200 | the option @option{--with-gnu-as} may be necessary. |
3201 | ||
8a36672b | 3202 | The GCC libunwind library has not been ported to HPUX@. This means that for |
959a73a4 | 3203 | GCC versions 3.2.3 and earlier, @option{--enable-libunwind-exceptions} |
8a36672b | 3204 | is required to build GCC@. For GCC 3.3 and later, this is the default. |
443728bb L |
3205 | For gcc 3.4.3 and later, @option{--enable-libunwind-exceptions} is |
3206 | removed and the system libunwind library will always be used. | |
959a73a4 | 3207 | |
f42974dc | 3208 | @html |
b8db17af | 3209 | <hr /> |
f42974dc DW |
3210 | <!-- rs6000-ibm-aix*, powerpc-ibm-aix* --> |
3211 | @end html | |
5a4c9b10 | 3212 | @heading @anchor{x-ibm-aix}*-ibm-aix* |
6a1dbbaf | 3213 | Support for AIX version 3 and older was discontinued in GCC 3.4. |
f42974dc | 3214 | |
7cc654b8 DE |
3215 | ``out of memory'' bootstrap failures may indicate a problem with |
3216 | process resource limits (ulimit). Hard limits are configured in the | |
71fc0c16 | 3217 | @file{/etc/security/limits} system configuration file. |
7cc654b8 | 3218 | |
e8d8a034 DE |
3219 | To speed up the configuration phases of bootstrapping and installing GCC, |
3220 | one may use GNU Bash instead of AIX @command{/bin/sh}, e.g., | |
3221 | ||
3222 | @smallexample | |
3223 | % CONFIG_SHELL=/opt/freeware/bin/bash | |
3224 | % export CONFIG_SHELL | |
3225 | @end smallexample | |
3226 | ||
cc11cc9b PB |
3227 | and then proceed as described in @uref{build.html,,the build |
3228 | instructions}, where we strongly recommend specifying an absolute path | |
e8d8a034 DE |
3229 | to invoke @var{srcdir}/configure. |
3230 | ||
d3a95f27 DE |
3231 | Because GCC on AIX is built as a 32-bit executable by default, |
3232 | (although it can generate 64-bit programs) the GMP and MPFR libraries | |
3233 | required by gfortran must be 32-bit libraries. Building GMP and MPFR | |
3234 | as static archive libraries works better than shared libraries. | |
3235 | ||
6cfb3f16 | 3236 | Errors involving @code{alloca} when building GCC generally are due |
021c4bfd | 3237 | to an incorrect definition of @code{CC} in the Makefile or mixing files |
161d7b59 | 3238 | compiled with the native C compiler and GCC@. During the stage1 phase of |
6cfb3f16 JM |
3239 | the build, the native AIX compiler @strong{must} be invoked as @command{cc} |
3240 | (not @command{xlc}). Once @command{configure} has been informed of | |
3241 | @command{xlc}, one needs to use @samp{make distclean} to remove the | |
38209993 | 3242 | configure cache files and ensure that @env{CC} environment variable |
f42974dc DW |
3243 | does not provide a definition that will confuse @command{configure}. |
3244 | If this error occurs during stage2 or later, then the problem most likely | |
3245 | is the version of Make (see above). | |
3246 | ||
f0483418 | 3247 | The native @command{as} and @command{ld} are recommended for bootstrapping |
8a36672b | 3248 | on AIX 4 and required for bootstrapping on AIX 5L@. The GNU Assembler |
f0483418 DE |
3249 | reports that it supports WEAK symbols on AIX 4, which causes GCC to try to |
3250 | utilize weak symbol functionality although it is not supported. The GNU | |
8a36672b | 3251 | Assembler and Linker do not support AIX 5L sufficiently to bootstrap GCC@. |
f0483418 | 3252 | The native AIX tools do interoperate with GCC@. |
df002c7d | 3253 | |
04d2be8e | 3254 | Building @file{libstdc++.a} requires a fix for an AIX Assembler bug |
bb674cef DE |
3255 | APAR IY26685 (AIX 4.3) or APAR IY25528 (AIX 5.1). It also requires a |
3256 | fix for another AIX Assembler bug and a co-dependent AIX Archiver fix | |
06e7f299 | 3257 | referenced as APAR IY53606 (AIX 5.2) or a APAR IY54774 (AIX 5.1) |
2705baf5 | 3258 | |
bb674cef | 3259 | @samp{libstdc++} in GCC 3.4 increments the major version number of the |
fdf68669 | 3260 | shared object and GCC installation places the @file{libstdc++.a} |
bb674cef DE |
3261 | shared library in a common location which will overwrite the and GCC |
3262 | 3.3 version of the shared library. Applications either need to be | |
3263 | re-linked against the new shared library or the GCC 3.1 and GCC 3.3 | |
3264 | versions of the @samp{libstdc++} shared object needs to be available | |
3265 | to the AIX runtime loader. The GCC 3.1 @samp{libstdc++.so.4}, if | |
3266 | present, and GCC 3.3 @samp{libstdc++.so.5} shared objects can be | |
3267 | installed for runtime dynamic loading using the following steps to set | |
3268 | the @samp{F_LOADONLY} flag in the shared object for @emph{each} | |
fdf68669 DE |
3269 | multilib @file{libstdc++.a} installed: |
3270 | ||
bb674cef DE |
3271 | Extract the shared objects from the currently installed |
3272 | @file{libstdc++.a} archive: | |
3ab51846 | 3273 | @smallexample |
bb674cef | 3274 | % ar -x libstdc++.a libstdc++.so.4 libstdc++.so.5 |
3ab51846 | 3275 | @end smallexample |
fdf68669 DE |
3276 | |
3277 | Enable the @samp{F_LOADONLY} flag so that the shared object will be | |
3278 | available for runtime dynamic loading, but not linking: | |
3ab51846 | 3279 | @smallexample |
bb674cef | 3280 | % strip -e libstdc++.so.4 libstdc++.so.5 |
3ab51846 | 3281 | @end smallexample |
fdf68669 | 3282 | |
bb674cef | 3283 | Archive the runtime-only shared object in the GCC 3.4 |
fdf68669 | 3284 | @file{libstdc++.a} archive: |
3ab51846 | 3285 | @smallexample |
bb674cef | 3286 | % ar -q libstdc++.a libstdc++.so.4 libstdc++.so.5 |
3ab51846 | 3287 | @end smallexample |
fdf68669 | 3288 | |
df002c7d DE |
3289 | Linking executables and shared libraries may produce warnings of |
3290 | duplicate symbols. The assembly files generated by GCC for AIX always | |
3291 | have included multiple symbol definitions for certain global variable | |
3292 | and function declarations in the original program. The warnings should | |
3293 | not prevent the linker from producing a correct library or runnable | |
3294 | executable. | |
3295 | ||
6cfb3f16 | 3296 | AIX 4.3 utilizes a ``large format'' archive to support both 32-bit and |
df002c7d DE |
3297 | 64-bit object modules. The routines provided in AIX 4.3.0 and AIX 4.3.1 |
3298 | to parse archive libraries did not handle the new format correctly. | |
3299 | These routines are used by GCC and result in error messages during | |
6cfb3f16 | 3300 | linking such as ``not a COFF file''. The version of the routines shipped |
df002c7d DE |
3301 | with AIX 4.3.1 should work for a 32-bit environment. The @option{-g} |
3302 | option of the archive command may be used to create archives of 32-bit | |
6cfb3f16 | 3303 | objects using the original ``small format''. A correct version of the |
d5d8d540 | 3304 | routines is shipped with AIX 4.3.2 and above. |
df002c7d | 3305 | |
f42974dc DW |
3306 | Some versions of the AIX binder (linker) can fail with a relocation |
3307 | overflow severe error when the @option{-bbigtoc} option is used to link | |
161d7b59 | 3308 | GCC-produced object files into an executable that overflows the TOC@. A fix |
f42974dc DW |
3309 | for APAR IX75823 (OVERFLOW DURING LINK WHEN USING GCC AND -BBIGTOC) is |
3310 | available from IBM Customer Support and from its | |
d5d8d540 | 3311 | @uref{http://techsupport.services.ibm.com/,,techsupport.services.ibm.com} |
f42974dc DW |
3312 | website as PTF U455193. |
3313 | ||
df002c7d | 3314 | The AIX 4.3.2.1 linker (bos.rte.bind_cmds Level 4.3.2.1) will dump core |
161d7b59 | 3315 | with a segmentation fault when invoked by any version of GCC@. A fix for |
df002c7d | 3316 | APAR IX87327 is available from IBM Customer Support and from its |
d5d8d540 | 3317 | @uref{http://techsupport.services.ibm.com/,,techsupport.services.ibm.com} |
df002c7d | 3318 | website as PTF U461879. This fix is incorporated in AIX 4.3.3 and above. |
f42974dc DW |
3319 | |
3320 | The initial assembler shipped with AIX 4.3.0 generates incorrect object | |
3321 | files. A fix for APAR IX74254 (64BIT DISASSEMBLED OUTPUT FROM COMPILER FAILS | |
3322 | TO ASSEMBLE/BIND) is available from IBM Customer Support and from its | |
d5d8d540 | 3323 | @uref{http://techsupport.services.ibm.com/,,techsupport.services.ibm.com} |
f42974dc DW |
3324 | website as PTF U453956. This fix is incorporated in AIX 4.3.1 and above. |
3325 | ||
161d7b59 | 3326 | AIX provides National Language Support (NLS)@. Compilers and assemblers |
df002c7d | 3327 | use NLS to support locale-specific representations of various data |
6cfb3f16 | 3328 | formats including floating-point numbers (e.g., @samp{.} vs @samp{,} for |
df002c7d DE |
3329 | separating decimal fractions). There have been problems reported where |
3330 | GCC does not produce the same floating-point formats that the assembler | |
c771326b | 3331 | expects. If one encounters this problem, set the @env{LANG} |
6cfb3f16 | 3332 | environment variable to @samp{C} or @samp{En_US}. |
f42974dc | 3333 | |
5791e6da DE |
3334 | By default, GCC for AIX 4.1 and above produces code that can be used on |
3335 | both Power or PowerPC processors. | |
3336 | ||
d5d8d540 DE |
3337 | A default can be specified with the @option{-mcpu=@var{cpu_type}} |
3338 | switch and using the configure option @option{--with-cpu-@var{cpu_type}}. | |
f42974dc | 3339 | |
6b3d1e47 SC |
3340 | @html |
3341 | <hr /> | |
3342 | @end html | |
5a4c9b10 | 3343 | @heading @anchor{iq2000-x-elf}iq2000-*-elf |
6b3d1e47 SC |
3344 | Vitesse IQ2000 processors. These are used in embedded |
3345 | applications. There are no standard Unix configurations. | |
3346 | ||
38b2d076 DD |
3347 | @html |
3348 | <hr /> | |
3349 | @end html | |
3350 | @heading @anchor{m32c-x-elf}m32c-*-elf | |
3351 | Renesas M32C processor. | |
3352 | This configuration is intended for embedded systems. | |
3353 | ||
b8df899a | 3354 | @html |
b8db17af | 3355 | <hr /> |
b8df899a | 3356 | @end html |
5a4c9b10 | 3357 | @heading @anchor{m32r-x-elf}m32r-*-elf |
25f47a4c | 3358 | Renesas M32R processor. |
b8df899a JM |
3359 | This configuration is intended for embedded systems. |
3360 | ||
b8df899a | 3361 | @html |
b8db17af | 3362 | <hr /> |
b8df899a JM |
3363 | @end html |
3364 | @heading @anchor{m6811-elf}m6811-elf | |
3365 | Motorola 68HC11 family micro controllers. These are used in embedded | |
3366 | applications. There are no standard Unix configurations. | |
3367 | ||
3368 | @html | |
b8db17af | 3369 | <hr /> |
b8df899a JM |
3370 | @end html |
3371 | @heading @anchor{m6812-elf}m6812-elf | |
3372 | Motorola 68HC12 family micro controllers. These are used in embedded | |
3373 | applications. There are no standard Unix configurations. | |
3374 | ||
b8df899a | 3375 | @html |
b8db17af | 3376 | <hr /> |
b8df899a JM |
3377 | @end html |
3378 | @heading @anchor{m68k-hp-hpux}m68k-hp-hpux | |
161d7b59 JM |
3379 | HP 9000 series 300 or 400 running HP-UX@. HP-UX version 8.0 has a bug in |
3380 | the assembler that prevents compilation of GCC@. This | |
b8df899a JM |
3381 | bug manifests itself during the first stage of compilation, while |
3382 | building @file{libgcc2.a}: | |
3383 | ||
3384 | @smallexample | |
3385 | _floatdisf | |
3386 | cc1: warning: `-g' option not supported on this version of GCC | |
3387 | cc1: warning: `-g1' option not supported on this version of GCC | |
3388 | ./xgcc: Internal compiler error: program as got fatal signal 11 | |
3389 | @end smallexample | |
3390 | ||
3391 | A patched version of the assembler is available as the file | |
3392 | @uref{ftp://altdorf.ai.mit.edu/archive/cph/hpux-8.0-assembler}. If you | |
3393 | have HP software support, the patch can also be obtained directly from | |
3394 | HP, as described in the following note: | |
3395 | ||
3396 | @quotation | |
3397 | This is the patched assembler, to patch SR#1653-010439, where the | |
3398 | assembler aborts on floating point constants. | |
3399 | ||
3400 | The bug is not really in the assembler, but in the shared library | |
3401 | version of the function ``cvtnum(3c)''. The bug on ``cvtnum(3c)'' is | |
3402 | SR#4701-078451. Anyway, the attached assembler uses the archive | |
3403 | library version of ``cvtnum(3c)'' and thus does not exhibit the bug. | |
3404 | @end quotation | |
3405 | ||
3406 | This patch is also known as PHCO_4484. | |
3407 | ||
41ca24de | 3408 | In addition gdb does not understand that native HP-UX format, so |
b8df899a JM |
3409 | you must use gas if you wish to use gdb. |
3410 | ||
3411 | On HP-UX version 8.05, but not on 8.07 or more recent versions, the | |
7ba4ca63 | 3412 | @command{fixproto} shell script triggers a bug in the system shell. If you |
b8df899a | 3413 | encounter this problem, upgrade your operating system or use BASH (the |
7ba4ca63 | 3414 | GNU shell) to run @command{fixproto}. This bug will cause the fixproto |
b8df899a JM |
3415 | program to report an error of the form: |
3416 | ||
3ab51846 | 3417 | @smallexample |
b8df899a | 3418 | ./fixproto: sh internal 1K buffer overflow |
3ab51846 | 3419 | @end smallexample |
b8df899a JM |
3420 | |
3421 | To fix this, you can also change the first line of the fixproto script | |
3422 | to look like: | |
3423 | ||
3ab51846 | 3424 | @smallexample |
b8df899a | 3425 | #!/bin/ksh |
3ab51846 | 3426 | @end smallexample |
b8df899a | 3427 | |
b8df899a | 3428 | @html |
b8db17af | 3429 | <hr /> |
b8df899a | 3430 | @end html |
5a4c9b10 | 3431 | @heading @anchor{mips-x-x}mips-*-* |
b8df899a JM |
3432 | If on a MIPS system you get an error message saying ``does not have gp |
3433 | sections for all it's [sic] sectons [sic]'', don't worry about it. This | |
3434 | happens whenever you use GAS with the MIPS linker, but there is not | |
3435 | really anything wrong, and it is okay to use the output file. You can | |
3436 | stop such warnings by installing the GNU linker. | |
3437 | ||
3438 | It would be nice to extend GAS to produce the gp tables, but they are | |
3439 | optional, and there should not be a warning about their absence. | |
3440 | ||
26979a17 PE |
3441 | The libstdc++ atomic locking routines for MIPS targets requires MIPS II |
3442 | and later. A patch went in just after the GCC 3.3 release to | |
3443 | make @samp{mips*-*-*} use the generic implementation instead. You can also | |
3444 | configure for @samp{mipsel-elf} as a workaround. The | |
3445 | @samp{mips*-*-linux*} target continues to use the MIPS II routines. More | |
3446 | work on this is expected in future releases. | |
3447 | ||
9f0df97a DD |
3448 | MIPS systems check for division by zero (unless |
3449 | @option{-mno-check-zero-division} is passed to the compiler) by | |
3450 | generating either a conditional trap or a break instruction. Using | |
3451 | trap results in smaller code, but is only supported on MIPS II and | |
3452 | later. Also, some versions of the Linux kernel have a bug that | |
8a36672b | 3453 | prevents trap from generating the proper signal (@code{SIGFPE}). To enable |
9f0df97a | 3454 | the use of break, use the @option{--with-divide=breaks} |
8a36672b | 3455 | @command{configure} option when configuring GCC@. The default is to |
9f0df97a DD |
3456 | use traps on systems that support them. |
3457 | ||
a4d05547 | 3458 | Cross-compilers for the MIPS as target using the MIPS assembler |
01e97976 JM |
3459 | currently do not work, because the auxiliary programs |
3460 | @file{mips-tdump.c} and @file{mips-tfile.c} can't be compiled on | |
a4d05547 | 3461 | anything but a MIPS. It does work to cross compile for a MIPS |
01e97976 JM |
3462 | if you use the GNU assembler and linker. |
3463 | ||
549fb079 DD |
3464 | The linker from GNU binutils versions prior to 2.17 has a bug which |
3465 | causes the runtime linker stubs in @file{libgcj.so} to be incorrectly | |
3466 | generated. If you want to use libgcj, either use binutils 2.17 or | |
3467 | later to build it or export @samp{LD_BIND_NOW=1} in your runtime environment. | |
3468 | ||
5fb57097 EB |
3469 | @html |
3470 | <hr /> | |
3471 | @end html | |
b953cc4b RO |
3472 | @heading @anchor{mips-sgi-irix5}mips-sgi-irix5 |
3473 | ||
7e270317 RO |
3474 | In order to compile GCC on an SGI running IRIX 5, the @samp{compiler_dev.hdr} |
3475 | subsystem must be installed from the IDO CD-ROM supplied by SGI@. | |
3476 | It is also available for download from | |
8df5a2b4 | 3477 | @uref{ftp://ftp.sgi.com/sgi/IRIX5.3/iris-development-option-5.3.tardist}. |
f42974dc | 3478 | |
213ba345 RO |
3479 | If you use the MIPS C compiler to bootstrap, it may be necessary |
3480 | to increase its table size for switch statements with the | |
3481 | @option{-Wf,-XNg1500} option. If you use the @option{-O2} | |
3482 | optimization option, you also need to use @option{-Olimit 3000}. | |
f42974dc | 3483 | |
7e270317 | 3484 | To enable debugging under IRIX 5, you must use GNU binutils 2.15 or |
82563d35 RS |
3485 | later, and use the @option{--with-gnu-ld} @command{configure} option |
3486 | when configuring GCC@. You need to use GNU @command{ar} and @command{nm}, | |
3487 | also distributed with GNU binutils. | |
f42974dc | 3488 | |
c5e1045b RS |
3489 | Some users have reported that @command{/bin/sh} will hang during bootstrap. |
3490 | This problem can be avoided by running the commands: | |
3491 | ||
3492 | @smallexample | |
3493 | % CONFIG_SHELL=/bin/ksh | |
3494 | % export CONFIG_SHELL | |
3495 | @end smallexample | |
3496 | ||
3497 | before starting the build. | |
3498 | ||
f42974dc | 3499 | @html |
b8db17af | 3500 | <hr /> |
f42974dc | 3501 | @end html |
b953cc4b | 3502 | @heading @anchor{mips-sgi-irix6}mips-sgi-irix6 |
f42974dc | 3503 | |
7e270317 | 3504 | If you are using SGI's MIPSpro @command{cc} as your bootstrap compiler, you must |
f42974dc DW |
3505 | ensure that the N32 ABI is in use. To test this, compile a simple C |
3506 | file with @command{cc} and then run @command{file} on the | |
3507 | resulting object file. The output should look like: | |
3508 | ||
3ab51846 | 3509 | @smallexample |
213ba345 | 3510 | test.o: ELF N32 MSB @dots{} |
3ab51846 | 3511 | @end smallexample |
f42974dc DW |
3512 | |
3513 | If you see: | |
213ba345 | 3514 | |
3ab51846 | 3515 | @smallexample |
213ba345 | 3516 | test.o: ELF 32-bit MSB @dots{} |
3ab51846 | 3517 | @end smallexample |
213ba345 RO |
3518 | |
3519 | or | |
3520 | ||
3ab51846 | 3521 | @smallexample |
213ba345 | 3522 | test.o: ELF 64-bit MSB @dots{} |
3ab51846 | 3523 | @end smallexample |
f42974dc | 3524 | |
213ba345 | 3525 | then your version of @command{cc} uses the O32 or N64 ABI by default. You |
38209993 | 3526 | should set the environment variable @env{CC} to @samp{cc -n32} |
82563d35 | 3527 | before configuring GCC@. |
f42974dc | 3528 | |
0fca60ab | 3529 | If you want the resulting @command{gcc} to run on old 32-bit systems |
7e270317 | 3530 | with the MIPS R4400 CPU, you need to ensure that only code for the @samp{mips3} |
0fca60ab RO |
3531 | instruction set architecture (ISA) is generated. While GCC 3.x does |
3532 | this correctly, both GCC 2.95 and SGI's MIPSpro @command{cc} may change | |
3533 | the ISA depending on the machine where GCC is built. Using one of them | |
7e270317 RO |
3534 | as the bootstrap compiler may result in @samp{mips4} code, which won't run at |
3535 | all on @samp{mips3}-only systems. For the test program above, you should see: | |
0fca60ab | 3536 | |
3ab51846 | 3537 | @smallexample |
0fca60ab | 3538 | test.o: ELF N32 MSB mips-3 @dots{} |
3ab51846 | 3539 | @end smallexample |
0fca60ab RO |
3540 | |
3541 | If you get: | |
3542 | ||
3ab51846 | 3543 | @smallexample |
0fca60ab | 3544 | test.o: ELF N32 MSB mips-4 @dots{} |
3ab51846 | 3545 | @end smallexample |
0fca60ab RO |
3546 | |
3547 | instead, you should set the environment variable @env{CC} to @samp{cc | |
3548 | -n32 -mips3} or @samp{gcc -mips3} respectively before configuring GCC@. | |
3549 | ||
82563d35 RS |
3550 | MIPSpro C 7.4 may cause bootstrap failures, due to a bug when inlining |
3551 | @code{memcmp}. Either add @code{-U__INLINE_INTRINSICS} to the @env{CC} | |
3552 | environment variable as a workaround or upgrade to MIPSpro C 7.4.1m. | |
3553 | ||
7e270317 RO |
3554 | GCC on IRIX 6 is usually built to support the N32, O32 and N64 ABIs. If |
3555 | you build GCC on a system that doesn't have the N64 libraries installed | |
3556 | or cannot run 64-bit binaries, | |
213ba345 | 3557 | you need to configure with @option{--disable-multilib} so GCC doesn't |
7e270317 RO |
3558 | try to use them. This will disable building the O32 libraries, too. |
3559 | Look for @file{/usr/lib64/libc.so.1} to see if you | |
213ba345 RO |
3560 | have the 64-bit libraries installed. |
3561 | ||
7e270317 RO |
3562 | To enable debugging for the O32 ABI, you must use GNU @command{as} from |
3563 | GNU binutils 2.15 or later. You may also use GNU @command{ld}, but | |
3564 | this is not required and currently causes some problems with Ada. | |
f42974dc | 3565 | |
b953cc4b RO |
3566 | The @option{--enable-threads} option doesn't currently work, a patch is |
3567 | in preparation for a future release. The @option{--enable-libgcj} | |
3568 | option is disabled by default: IRIX 6 uses a very low default limit | |
7e270317 | 3569 | (20480) for the command line length. Although @command{libtool} contains a |
b953cc4b RO |
3570 | workaround for this problem, at least the N64 @samp{libgcj} is known not |
3571 | to build despite this, running into an internal error of the native | |
3572 | @command{ld}. A sure fix is to increase this limit (@samp{ncargs}) to | |
3573 | its maximum of 262144 bytes. If you have root access, you can use the | |
3574 | @command{systune} command to do this. | |
3575 | ||
93e89068 PC |
3576 | @code{wchar_t} support in @samp{libstdc++} is not available for old |
3577 | IRIX 6.5.x releases, @math{x < 19}. The problem cannot be autodetected | |
3578 | and in order to build GCC for such targets you need to configure with | |
3579 | @option{--disable-wchar_t}. | |
3580 | ||
7e270317 | 3581 | See @uref{http://freeware.sgi.com/} for more |
3aa8219e | 3582 | information about using GCC on IRIX platforms. |
f42974dc | 3583 | |
b8df899a | 3584 | @html |
b8db17af | 3585 | <hr /> |
b8df899a | 3586 | @end html |
5a4c9b10 | 3587 | @heading @anchor{powerpc-x-x}powerpc-*-* |
b8df899a | 3588 | |
6cfb3f16 JM |
3589 | You can specify a default version for the @option{-mcpu=@var{cpu_type}} |
3590 | switch by using the configure option @option{--with-cpu-@var{cpu_type}}. | |
b8df899a | 3591 | |
4f2b1139 | 3592 | @html |
b8db17af | 3593 | <hr /> |
4f2b1139 | 3594 | @end html |
5a4c9b10 | 3595 | @heading @anchor{powerpc-x-darwin}powerpc-*-darwin* |
4f2b1139 SS |
3596 | PowerPC running Darwin (Mac OS X kernel). |
3597 | ||
4f2b1139 SS |
3598 | Pre-installed versions of Mac OS X may not include any developer tools, |
3599 | meaning that you will not be able to build GCC from source. Tool | |
3600 | binaries are available at | |
beb5f807 | 3601 | @uref{http://developer.apple.com/darwin/projects/compiler/} (free |
4f2b1139 SS |
3602 | registration required). |
3603 | ||
960ac6e1 | 3604 | This version of GCC requires at least cctools-590.7. |
b89a3806 GK |
3605 | |
3606 | The version of GCC shipped by Apple typically includes a number of | |
3607 | extensions not available in a standard GCC release. These extensions | |
aeb732c1 | 3608 | are generally for backwards compatibility and best avoided. |
4f2b1139 | 3609 | |
021c4bfd | 3610 | @html |
b8db17af | 3611 | <hr /> |
021c4bfd | 3612 | @end html |
5a4c9b10 | 3613 | @heading @anchor{powerpc-x-elf}powerpc-*-elf, powerpc-*-sysv4 |
021c4bfd RO |
3614 | PowerPC system in big endian mode, running System V.4. |
3615 | ||
f42974dc | 3616 | @html |
b8db17af | 3617 | <hr /> |
f42974dc | 3618 | @end html |
5a4c9b10 | 3619 | @heading @anchor{powerpc-x-linux-gnu}powerpc*-*-linux-gnu* |
f42974dc | 3620 | |
f9047ed3 | 3621 | You will need |
c3a2edb6 | 3622 | @uref{ftp://ftp.kernel.org/pub/linux/devel/binutils,,binutils 2.15} |
791a949f | 3623 | or newer for a working GCC@. |
f42974dc | 3624 | |
edf1b3f3 | 3625 | @html |
b8db17af | 3626 | <hr /> |
edf1b3f3 | 3627 | @end html |
5a4c9b10 | 3628 | @heading @anchor{powerpc-x-netbsd}powerpc-*-netbsd* |
edf1b3f3 | 3629 | PowerPC system in big endian mode running NetBSD@. To build the |
1a598a97 | 3630 | documentation you will need Texinfo version 4.4 (NetBSD 1.5.1 included |
edf1b3f3 AC |
3631 | Texinfo version 3.12). |
3632 | ||
b8df899a | 3633 | @html |
b8db17af | 3634 | <hr /> |
b8df899a | 3635 | @end html |
5a4c9b10 | 3636 | @heading @anchor{powerpc-x-eabisim}powerpc-*-eabisim |
b8df899a JM |
3637 | Embedded PowerPC system in big endian mode for use in running under the |
3638 | PSIM simulator. | |
3639 | ||
b8df899a | 3640 | @html |
b8db17af | 3641 | <hr /> |
b8df899a | 3642 | @end html |
5a4c9b10 | 3643 | @heading @anchor{powerpc-x-eabi}powerpc-*-eabi |
b8df899a JM |
3644 | Embedded PowerPC system in big endian mode. |
3645 | ||
b8df899a | 3646 | @html |
b8db17af | 3647 | <hr /> |
b8df899a | 3648 | @end html |
5a4c9b10 | 3649 | @heading @anchor{powerpcle-x-elf}powerpcle-*-elf, powerpcle-*-sysv4 |
b8df899a JM |
3650 | PowerPC system in little endian mode, running System V.4. |
3651 | ||
b8df899a | 3652 | @html |
b8db17af | 3653 | <hr /> |
b8df899a | 3654 | @end html |
5a4c9b10 | 3655 | @heading @anchor{powerpcle-x-eabisim}powerpcle-*-eabisim |
b8df899a JM |
3656 | Embedded PowerPC system in little endian mode for use in running under |
3657 | the PSIM simulator. | |
3658 | ||
3659 | @html | |
b8db17af | 3660 | <hr /> |
b8df899a | 3661 | @end html |
5a4c9b10 | 3662 | @heading @anchor{powerpcle-x-eabi}powerpcle-*-eabi |
b8df899a JM |
3663 | Embedded PowerPC system in little endian mode. |
3664 | ||
91abf72d | 3665 | @html |
b8db17af | 3666 | <hr /> |
91abf72d | 3667 | @end html |
5a4c9b10 | 3668 | @heading @anchor{s390-x-linux}s390-*-linux* |
95fef11f | 3669 | S/390 system running GNU/Linux for S/390@. |
91abf72d HP |
3670 | |
3671 | @html | |
b8db17af | 3672 | <hr /> |
91abf72d | 3673 | @end html |
5a4c9b10 | 3674 | @heading @anchor{s390x-x-linux}s390x-*-linux* |
95fef11f | 3675 | zSeries system (64-bit) running GNU/Linux for zSeries@. |
91abf72d | 3676 | |
8bf06993 UW |
3677 | @html |
3678 | <hr /> | |
3679 | @end html | |
5a4c9b10 | 3680 | @heading @anchor{s390x-ibm-tpf}s390x-ibm-tpf* |
8a36672b | 3681 | zSeries system (64-bit) running TPF@. This platform is |
8bf06993 UW |
3682 | supported as cross-compilation target only. |
3683 | ||
f42974dc | 3684 | @html |
b8db17af | 3685 | <hr /> |
f42974dc | 3686 | @end html |
250d5688 | 3687 | @c Please use Solaris 2 to refer to all release of Solaris, starting |
1460af95 | 3688 | @c with 2.0 until 2.6, 7, 8, etc. Solaris 1 was a marketing name for |
250d5688 RO |
3689 | @c SunOS 4 releases which we don't use to avoid confusion. Solaris |
3690 | @c alone is too unspecific and must be avoided. | |
5a4c9b10 | 3691 | @heading @anchor{x-x-solaris2}*-*-solaris2* |
f42974dc | 3692 | |
250d5688 | 3693 | Sun does not ship a C compiler with Solaris 2. To bootstrap and install |
962e6e00 | 3694 | GCC you first have to install a pre-built compiler, see the |
dbd210ef | 3695 | @uref{binaries.html,,binaries page} for details. |
f42974dc | 3696 | |
250d5688 | 3697 | The Solaris 2 @command{/bin/sh} will often fail to configure |
92441f83 | 3698 | @file{libstdc++-v3}, @file{boehm-gc} or @file{libjava}. We therefore |
1da1ce3f | 3699 | recommend using the following initial sequence of commands |
bc890961 EB |
3700 | |
3701 | @smallexample | |
3702 | % CONFIG_SHELL=/bin/ksh | |
3703 | % export CONFIG_SHELL | |
bc890961 EB |
3704 | @end smallexample |
3705 | ||
1da1ce3f | 3706 | and proceed as described in @uref{configure.html,,the configure instructions}. |
37de1373 GP |
3707 | In addition we strongly recommend specifying an absolute path to invoke |
3708 | @var{srcdir}/configure. | |
e6855a2d | 3709 | |
b8df899a | 3710 | Solaris 2 comes with a number of optional OS packages. Some of these |
92441f83 | 3711 | are needed to use GCC fully, namely @code{SUNWarc}, |
dbd210ef KC |
3712 | @code{SUNWbtool}, @code{SUNWesu}, @code{SUNWhea}, @code{SUNWlibm}, |
3713 | @code{SUNWsprot}, and @code{SUNWtoo}. If you did not install all | |
250d5688 | 3714 | optional packages when installing Solaris 2, you will need to verify that |
b8df899a JM |
3715 | the packages that GCC needs are installed. |
3716 | ||
3717 | To check whether an optional package is installed, use | |
dbd210ef | 3718 | the @command{pkginfo} command. To add an optional package, use the |
250d5688 | 3719 | @command{pkgadd} command. For further details, see the Solaris 2 |
b8df899a JM |
3720 | documentation. |
3721 | ||
250d5688 | 3722 | Trying to use the linker and other tools in |
b8df899a JM |
3723 | @file{/usr/ucb} to install GCC has been observed to cause trouble. |
3724 | For example, the linker may hang indefinitely. The fix is to remove | |
250d5688 | 3725 | @file{/usr/ucb} from your @env{PATH}. |
f42974dc | 3726 | |
bc890961 EB |
3727 | The build process works more smoothly with the legacy Sun tools so, if you |
3728 | have @file{/usr/xpg4/bin} in your @env{PATH}, we recommend that you place | |
3729 | @file{/usr/bin} before @file{/usr/xpg4/bin} for the duration of the build. | |
3730 | ||
021c4bfd | 3731 | All releases of GNU binutils prior to 2.11.2 have known bugs on this |
51e9a60c EB |
3732 | platform. We recommend the use of GNU binutils 2.11.2 or later, or the |
3733 | vendor tools (Sun @command{as}, Sun @command{ld}). Note that your mileage | |
3734 | may vary if you use a combination of the GNU tools and the Sun tools: while | |
3735 | the combination GNU @command{as} + Sun @command{ld} should reasonably work, | |
3736 | the reverse combination Sun @command{as} + GNU @command{ld} is known to | |
3737 | cause memory corruption at runtime in some cases for C++ programs. | |
3738 | ||
3739 | The stock GNU binutils 2.15 release is broken on this platform because of a | |
3740 | single bug. It has been fixed on the 2.15 branch in the CVS repository. | |
3741 | You can obtain a working version by checking out the binutils-2_15-branch | |
3742 | from the CVS repository or applying the patch | |
224edf72 | 3743 | @uref{http://sources.redhat.com/ml/binutils-cvs/2004-09/msg00036.html} to the |
51e9a60c | 3744 | release. |
f42974dc | 3745 | |
ff8f80f2 EB |
3746 | We recommend using GNU binutils 2.16 or later in conjunction with GCC 4.x, |
3747 | or the vendor tools (Sun @command{as}, Sun @command{ld}). However, for | |
3748 | Solaris 10 and above, an additional patch is required in order for the GNU | |
3749 | linker to be able to cope with a new flavor of shared libraries. You | |
3750 | can obtain a working version by checking out the binutils-2_16-branch from | |
3751 | the CVS repository or applying the patch | |
2c00bd42 EB |
3752 | @uref{http://sourceware.org/ml/binutils-cvs/2005-07/msg00122.html} to the |
3753 | release. | |
3754 | ||
250d5688 RO |
3755 | Sun bug 4296832 turns up when compiling X11 headers with GCC 2.95 or |
3756 | newer: @command{g++} will complain that types are missing. These headers assume | |
3757 | that omitting the type means @code{int}; this assumption worked for C89 but | |
3758 | is wrong for C++, and is now wrong for C99 also. | |
3759 | ||
13ba36b4 | 3760 | @command{g++} accepts such (invalid) constructs with the option |
250d5688 RO |
3761 | @option{-fpermissive}; it |
3762 | will assume that any missing type is @code{int} (as defined by C89). | |
3763 | ||
3764 | There are patches for Solaris 2.6 (105633-56 or newer for SPARC, | |
3765 | 106248-42 or newer for Intel), Solaris 7 (108376-21 or newer for SPARC, | |
3766 | 108377-20 for Intel), and Solaris 8 (108652-24 or newer for SPARC, | |
3767 | 108653-22 for Intel) that fix this bug. | |
f42974dc | 3768 | |
c7525a64 KG |
3769 | Sun bug 4927647 sometimes causes random spurious testsuite failures |
3770 | related to missing diagnostic output. This bug doesn't affect GCC | |
3771 | itself, rather it is a kernel bug triggered by the @command{expect} | |
3772 | program which is used only by the GCC testsuite driver. When the bug | |
3773 | causes the @command{expect} program to miss anticipated output, extra | |
3774 | testsuite failures appear. | |
3775 | ||
3776 | There are patches for Solaris 8 (117350-12 or newer for SPARC, | |
3777 | 117351-12 or newer for Intel) and Solaris 9 (117171-11 or newer for | |
3778 | SPARC, 117172-11 or newer for Intel) that address this problem. | |
3779 | ||
dbd210ef | 3780 | @html |
b8db17af | 3781 | <hr /> |
dbd210ef | 3782 | @end html |
5a4c9b10 | 3783 | @heading @anchor{sparc-sun-solaris2}sparc-sun-solaris2* |
dbd210ef | 3784 | |
1405141b DN |
3785 | When GCC is configured to use binutils 2.11.2 or later the binaries |
3786 | produced are smaller than the ones produced using Sun's native tools; | |
3787 | this difference is quite significant for binaries containing debugging | |
3788 | information. | |
3789 | ||
250d5688 | 3790 | Sun @command{as} 4.x is broken in that it cannot cope with long symbol names. |
dbd210ef KC |
3791 | A typical error message might look similar to the following: |
3792 | ||
8c085f6f JJ |
3793 | @smallexample |
3794 | /usr/ccs/bin/as: "/var/tmp/ccMsw135.s", line 11041: error: | |
3795 | can't compute value of an expression involving an external symbol. | |
3796 | @end smallexample | |
dbd210ef | 3797 | |
250d5688 RO |
3798 | This is Sun bug 4237974. This is fixed with patch 108908-02 for Solaris |
3799 | 2.6 and has been fixed in later (5.x) versions of the assembler, | |
3800 | starting with Solaris 7. | |
dbd210ef | 3801 | |
03b272d2 | 3802 | Starting with Solaris 7, the operating system is capable of executing |
975c6e4e RO |
3803 | 64-bit SPARC V9 binaries. GCC 3.1 and later properly supports |
3804 | this; the @option{-m64} option enables 64-bit code generation. | |
3805 | However, if all you want is code tuned for the UltraSPARC CPU, you | |
3806 | should try the @option{-mtune=ultrasparc} option instead, which produces | |
3807 | code that, unlike full 64-bit code, can still run on non-UltraSPARC | |
edf1c8df | 3808 | machines. |
03b272d2 | 3809 | |
975c6e4e | 3810 | When configuring on a Solaris 7 or later system that is running a kernel |
8947df0c RH |
3811 | that supports only 32-bit binaries, one must configure with |
3812 | @option{--disable-multilib}, since we will not be able to build the | |
3813 | 64-bit target libraries. | |
3fc602a0 | 3814 | |
ae81c844 EB |
3815 | GCC 3.3 and GCC 3.4 trigger code generation bugs in earlier versions of |
3816 | the GNU compiler (especially GCC 3.0.x versions), which lead to the | |
3817 | miscompilation of the stage1 compiler and the subsequent failure of the | |
3818 | bootstrap process. A workaround is to use GCC 3.2.3 as an intermediary | |
431ae0bf | 3819 | stage, i.e.@: to bootstrap that compiler with the base compiler and then |
ae81c844 EB |
3820 | use it to bootstrap the final compiler. |
3821 | ||
94b18ec1 EB |
3822 | GCC 3.4 triggers a code generation bug in versions 5.4 (Sun ONE Studio 7) |
3823 | and 5.5 (Sun ONE Studio 8) of the Sun compiler, which causes a bootstrap | |
3824 | failure in form of a miscompilation of the stage1 compiler by the Sun | |
3825 | compiler. This is Sun bug 4974440. This is fixed with patch 112760-07. | |
3826 | ||
1460af95 | 3827 | GCC 3.4 changed the default debugging format from STABS to DWARF-2 for |
dd48afcd EB |
3828 | 32-bit code on Solaris 7 and later. If you use the Sun assembler, this |
3829 | change apparently runs afoul of Sun bug 4910101 (which is referenced as | |
3830 | a x86-only problem by Sun, probably because they do not use DWARF-2). | |
3831 | A symptom of the problem is that you cannot compile C++ programs like | |
3832 | @command{groff} 1.19.1 without getting messages similar to the following: | |
7c2f2b41 EB |
3833 | |
3834 | @smallexample | |
3835 | ld: warning: relocation error: R_SPARC_UA32: @dots{} | |
3836 | external symbolic relocation against non-allocatable section | |
3837 | .debug_info cannot be processed at runtime: relocation ignored. | |
3838 | @end smallexample | |
3839 | ||
3840 | To work around this problem, compile with @option{-gstabs+} instead of | |
3841 | plain @option{-g}. | |
1460af95 | 3842 | |
bb2ffd7f EB |
3843 | When configuring the GNU Multiple Precision Library (GMP) version 4.1.x |
3844 | on a Solaris 7 or later system, the canonical target triplet must be | |
3845 | specified as the @command{build} parameter on the configure line: | |
25c62e24 EB |
3846 | |
3847 | @smallexample | |
3848 | ./configure --build=sparc-sun-solaris2.7 --prefix=xxx --enable-mpfr | |
3849 | @end smallexample | |
3850 | ||
f42974dc | 3851 | @html |
b8db17af | 3852 | <hr /> |
f42974dc | 3853 | @end html |
d8fcd085 | 3854 | @heading @anchor{sparc-sun-solaris27}sparc-sun-solaris2.7 |
f42974dc | 3855 | |
250d5688 | 3856 | Sun patch 107058-01 (1999-01-13) for Solaris 7/SPARC triggers a bug in |
f42974dc DW |
3857 | the dynamic linker. This problem (Sun bug 4210064) affects GCC 2.8 |
3858 | and later, including all EGCS releases. Sun formerly recommended | |
3859 | 107058-01 for all Solaris 7 users, but around 1999-09-01 it started to | |
3860 | recommend it only for people who use Sun's compilers. | |
f9047ed3 | 3861 | |
f42974dc DW |
3862 | Here are some workarounds to this problem: |
3863 | @itemize @bullet | |
3864 | @item | |
3865 | Do not install Sun patch 107058-01 until after Sun releases a | |
3866 | complete patch for bug 4210064. This is the simplest course to take, | |
3867 | unless you must also use Sun's C compiler. Unfortunately 107058-01 | |
250d5688 | 3868 | is preinstalled on some new Solaris 7-based hosts, so you may have to |
f42974dc | 3869 | back it out. |
f9047ed3 | 3870 | |
f42974dc DW |
3871 | @item |
3872 | Copy the original, unpatched Solaris 7 | |
3873 | @command{/usr/ccs/bin/as} into | |
8e5f33ff | 3874 | @command{/usr/local/libexec/gcc/sparc-sun-solaris2.7/3.4/as}, |
f42974dc DW |
3875 | adjusting the latter name to fit your local conventions and software |
3876 | version numbers. | |
3877 | ||
3878 | @item | |
3879 | Install Sun patch 106950-03 (1999-05-25) or later. Nobody with | |
3880 | both 107058-01 and 106950-03 installed has reported the bug with GCC | |
3881 | and Sun's dynamic linker. This last course of action is riskiest, | |
3882 | for two reasons. First, you must install 106950 on all hosts that | |
3883 | run code generated by GCC; it doesn't suffice to install it only on | |
3884 | the hosts that run GCC itself. Second, Sun says that 106950-03 is | |
3885 | only a partial fix for bug 4210064, but Sun doesn't know whether the | |
161d7b59 | 3886 | partial fix is adequate for GCC@. Revision -08 or later should fix |
1460af95 | 3887 | the bug. The current (as of 2004-05-23) revision is -24, and is included in |
f282ffb3 | 3888 | the Solaris 7 Recommended Patch Cluster. |
f9047ed3 | 3889 | @end itemize |
f42974dc | 3890 | |
fdbf04c8 EB |
3891 | GCC 3.3 triggers a bug in version 5.0 Alpha 03/27/98 of the Sun assembler, |
3892 | which causes a bootstrap failure when linking the 64-bit shared version of | |
8a36672b | 3893 | libgcc. A typical error message is: |
fdbf04c8 EB |
3894 | |
3895 | @smallexample | |
3896 | ld: fatal: relocation error: R_SPARC_32: file libgcc/sparcv9/_muldi3.o: | |
3897 | symbol <unknown>: offset 0xffffffff7ec133e7 is non-aligned. | |
3898 | @end smallexample | |
3899 | ||
3900 | This bug has been fixed in the final 5.0 version of the assembler. | |
f42974dc | 3901 | |
661f4f90 EB |
3902 | A similar problem was reported for version Sun WorkShop 6 99/08/18 of the |
3903 | Sun assembler, which causes a bootstrap failure with GCC 4.0.0: | |
3904 | ||
3905 | @smallexample | |
3906 | ld: fatal: relocation error: R_SPARC_DISP32: | |
3907 | file .libs/libstdc++.lax/libsupc++convenience.a/vterminate.o: | |
3908 | symbol <unknown>: offset 0xfccd33ad is non-aligned | |
3909 | @end smallexample | |
3910 | ||
3911 | This bug has been fixed in more recent revisions of the assembler. | |
3912 | ||
c6fa9728 | 3913 | @html |
b8db17af | 3914 | <hr /> |
c6fa9728 | 3915 | @end html |
5a4c9b10 | 3916 | @heading @anchor{sparc-x-linux}sparc-*-linux* |
c6fa9728 JS |
3917 | |
3918 | GCC versions 3.0 and higher require binutils 2.11.2 and glibc 2.2.4 | |
3919 | or newer on this platform. All earlier binutils and glibc | |
3920 | releases mishandled unaligned relocations on @code{sparc-*-*} targets. | |
3921 | ||
3922 | ||
f42974dc | 3923 | @html |
b8db17af | 3924 | <hr /> |
f42974dc | 3925 | @end html |
5a4c9b10 | 3926 | @heading @anchor{sparc64-x-solaris2}sparc64-*-solaris2* |
e403b4bc CR |
3927 | |
3928 | The following compiler flags must be specified in the configure | |
3929 | step in order to bootstrap this target with the Sun compiler: | |
3930 | ||
3ab51846 | 3931 | @smallexample |
e403b4bc | 3932 | % CC="cc -xildoff -xarch=v9" @var{srcdir}/configure [@var{options}] [@var{target}] |
3ab51846 | 3933 | @end smallexample |
e403b4bc CR |
3934 | |
3935 | @option{-xildoff} turns off the incremental linker, and @option{-xarch=v9} | |
0dc7ee3c EB |
3936 | specifies the SPARC-V9 architecture to the Sun linker and assembler. |
3937 | ||
3938 | @html | |
3939 | <hr /> | |
3940 | @end html | |
5a4c9b10 | 3941 | @heading @anchor{sparcv9-x-solaris2}sparcv9-*-solaris2* |
0dc7ee3c EB |
3942 | |
3943 | This is a synonym for sparc64-*-solaris2*. | |
f42974dc | 3944 | |
b8df899a | 3945 | @html |
b8db17af | 3946 | <hr /> |
b8df899a | 3947 | @end html |
5a4c9b10 | 3948 | @heading @anchor{x-x-sysv}*-*-sysv* |
b8df899a JM |
3949 | On System V release 3, you may get this error message |
3950 | while linking: | |
3951 | ||
3952 | @smallexample | |
3953 | ld fatal: failed to write symbol name @var{something} | |
3954 | in strings table for file @var{whatever} | |
3955 | @end smallexample | |
3956 | ||
021c4bfd | 3957 | This probably indicates that the disk is full or your ulimit won't allow |
b8df899a JM |
3958 | the file to be as large as it needs to be. |
3959 | ||
3960 | This problem can also result because the kernel parameter @code{MAXUMEM} | |
3961 | is too small. If so, you must regenerate the kernel and make the value | |
3962 | much larger. The default value is reported to be 1024; a value of 32768 | |
3963 | is said to work. Smaller values may also work. | |
3964 | ||
3965 | On System V, if you get an error like this, | |
3966 | ||
3ab51846 | 3967 | @smallexample |
b8df899a JM |
3968 | /usr/local/lib/bison.simple: In function `yyparse': |
3969 | /usr/local/lib/bison.simple:625: virtual memory exhausted | |
3ab51846 | 3970 | @end smallexample |
b8df899a JM |
3971 | |
3972 | @noindent | |
021c4bfd | 3973 | that too indicates a problem with disk space, ulimit, or @code{MAXUMEM}. |
b8df899a | 3974 | |
f85b8d1a | 3975 | On a System V release 4 system, make sure @file{/usr/bin} precedes |
7ba4ca63 | 3976 | @file{/usr/ucb} in @code{PATH}. The @command{cc} command in |
f85b8d1a | 3977 | @file{/usr/ucb} uses libraries which have bugs. |
b8df899a JM |
3978 | |
3979 | @html | |
b8db17af | 3980 | <hr /> |
b8df899a JM |
3981 | @end html |
3982 | @heading @anchor{vax-dec-ultrix}vax-dec-ultrix | |
7ba4ca63 | 3983 | Don't try compiling with VAX C (@command{vcc}). It produces incorrect code |
b8df899a JM |
3984 | in some cases (for example, when @code{alloca} is used). |
3985 | ||
4977bab6 ZW |
3986 | @html |
3987 | <hr /> | |
3988 | @end html | |
5a4c9b10 | 3989 | @heading @anchor{x-x-vxworks}*-*-vxworks* |
4977bab6 | 3990 | Support for VxWorks is in flux. At present GCC supports @emph{only} the |
8a36672b | 3991 | very recent VxWorks 5.5 (aka Tornado 2.2) release, and only on PowerPC@. |
4977bab6 ZW |
3992 | We welcome patches for other architectures supported by VxWorks 5.5. |
3993 | Support for VxWorks AE would also be welcome; we believe this is merely | |
3994 | a matter of writing an appropriate ``configlette'' (see below). We are | |
3995 | not interested in supporting older, a.out or COFF-based, versions of | |
3996 | VxWorks in GCC 3. | |
3997 | ||
3998 | VxWorks comes with an older version of GCC installed in | |
3999 | @file{@var{$WIND_BASE}/host}; we recommend you do not overwrite it. | |
4000 | Choose an installation @var{prefix} entirely outside @var{$WIND_BASE}. | |
4001 | Before running @command{configure}, create the directories @file{@var{prefix}} | |
4002 | and @file{@var{prefix}/bin}. Link or copy the appropriate assembler, | |
8a36672b | 4003 | linker, etc.@: into @file{@var{prefix}/bin}, and set your @var{PATH} to |
4977bab6 ZW |
4004 | include that directory while running both @command{configure} and |
4005 | @command{make}. | |
4006 | ||
4007 | You must give @command{configure} the | |
4008 | @option{--with-headers=@var{$WIND_BASE}/target/h} switch so that it can | |
4009 | find the VxWorks system headers. Since VxWorks is a cross compilation | |
4010 | target only, you must also specify @option{--target=@var{target}}. | |
4011 | @command{configure} will attempt to create the directory | |
4012 | @file{@var{prefix}/@var{target}/sys-include} and copy files into it; | |
4013 | make sure the user running @command{configure} has sufficient privilege | |
4014 | to do so. | |
4015 | ||
4016 | GCC's exception handling runtime requires a special ``configlette'' | |
4017 | module, @file{contrib/gthr_supp_vxw_5x.c}. Follow the instructions in | |
4018 | that file to add the module to your kernel build. (Future versions of | |
daf2f129 | 4019 | VxWorks will incorporate this module.) |
4977bab6 | 4020 | |
7e081a0c AJ |
4021 | @html |
4022 | <hr /> | |
4023 | @end html | |
d8fcd085 | 4024 | @heading @anchor{x86-64-x-x}x86_64-*-*, amd64-*-* |
7e081a0c AJ |
4025 | |
4026 | GCC supports the x86-64 architecture implemented by the AMD64 processor | |
8a36672b | 4027 | (amd64-*-* is an alias for x86_64-*-*) on GNU/Linux, FreeBSD and NetBSD@. |
7e081a0c AJ |
4028 | On GNU/Linux the default is a bi-arch compiler which is able to generate |
4029 | both 64-bit x86-64 and 32-bit x86 code (via the @option{-m32} switch). | |
4030 | ||
fd29f6ea | 4031 | @html |
b8db17af | 4032 | <hr /> |
fd29f6ea | 4033 | @end html |
5a4c9b10 | 4034 | @heading @anchor{xtensa-x-elf}xtensa-*-elf |
fd29f6ea BW |
4035 | |
4036 | This target is intended for embedded Xtensa systems using the | |
4037 | @samp{newlib} C library. It uses ELF but does not support shared | |
4038 | objects. Designed-defined instructions specified via the | |
4039 | Tensilica Instruction Extension (TIE) language are only supported | |
4040 | through inline assembly. | |
4041 | ||
4042 | The Xtensa configuration information must be specified prior to | |
e677f70c | 4043 | building GCC@. The @file{include/xtensa-config.h} header |
fd29f6ea BW |
4044 | file contains the configuration information. If you created your |
4045 | own Xtensa configuration with the Xtensa Processor Generator, the | |
4046 | downloaded files include a customized copy of this header file, | |
4047 | which you can use to replace the default header file. | |
4048 | ||
4049 | @html | |
b8db17af | 4050 | <hr /> |
fd29f6ea | 4051 | @end html |
5a4c9b10 | 4052 | @heading @anchor{xtensa-x-linux}xtensa-*-linux* |
fd29f6ea BW |
4053 | |
4054 | This target is for Xtensa systems running GNU/Linux. It supports ELF | |
4055 | shared objects and the GNU C library (glibc). It also generates | |
4056 | position-independent code (PIC) regardless of whether the | |
4057 | @option{-fpic} or @option{-fPIC} options are used. In other | |
f282ffb3 | 4058 | respects, this target is the same as the |
fd29f6ea BW |
4059 | @uref{#xtensa-*-elf,,@samp{xtensa-*-elf}} target. |
4060 | ||
f42974dc | 4061 | @html |
b8db17af | 4062 | <hr /> |
f42974dc | 4063 | @end html |
57694e40 | 4064 | @heading @anchor{windows}Microsoft Windows (32-bit) |
f42974dc | 4065 | |
5b65d351 | 4066 | Ports of GCC are included with the |
f42974dc DW |
4067 | @uref{http://www.cygwin.com/,,Cygwin environment}. |
4068 | ||
5b65d351 GP |
4069 | GCC will build under Cygwin without modification; it does not build |
4070 | with Microsoft's C++ compiler and there are no plans to make it do so. | |
ccc1ce6e | 4071 | |
f42974dc | 4072 | @html |
b8db17af | 4073 | <hr /> |
f42974dc | 4074 | @end html |
ef88b07d | 4075 | @heading @anchor{os2}OS/2 |
f42974dc DW |
4076 | |
4077 | GCC does not currently support OS/2. However, Andrew Zabolotny has been | |
14976c58 | 4078 | working on a generic OS/2 port with pgcc. The current code can be found |
f42974dc DW |
4079 | at @uref{http://www.goof.com/pcg/os2/,,http://www.goof.com/pcg/os2/}. |
4080 | ||
f42974dc | 4081 | @html |
b8db17af | 4082 | <hr /> |
f42974dc | 4083 | @end html |
ef88b07d | 4084 | @heading @anchor{older}Older systems |
f9047ed3 JM |
4085 | |
4086 | GCC contains support files for many older (1980s and early | |
4087 | 1990s) Unix variants. For the most part, support for these systems | |
4088 | has not been deliberately removed, but it has not been maintained for | |
c7bdf0a6 | 4089 | several years and may suffer from bitrot. |
f9047ed3 | 4090 | |
c7bdf0a6 | 4091 | Starting with GCC 3.1, each release has a list of ``obsoleted'' systems. |
9340544b ZW |
4092 | Support for these systems is still present in that release, but |
4093 | @command{configure} will fail unless the @option{--enable-obsolete} | |
c7bdf0a6 ZW |
4094 | option is given. Unless a maintainer steps forward, support for these |
4095 | systems will be removed from the next release of GCC@. | |
f9047ed3 JM |
4096 | |
4097 | Support for old systems as hosts for GCC can cause problems if the | |
4098 | workarounds for compiler, library and operating system bugs affect the | |
161d7b59 | 4099 | cleanliness or maintainability of the rest of GCC@. In some cases, to |
f9047ed3 JM |
4100 | bring GCC up on such a system, if still possible with current GCC, may |
4101 | require first installing an old version of GCC which did work on that | |
c7bdf0a6 ZW |
4102 | system, and using it to compile a more recent GCC, to avoid bugs in the |
4103 | vendor compiler. Old releases of GCC 1 and GCC 2 are available in the | |
4104 | @file{old-releases} directory on the @uref{../mirrors.html,,GCC mirror | |
4105 | sites}. Header bugs may generally be avoided using | |
4106 | @command{fixincludes}, but bugs or deficiencies in libraries and the | |
4107 | operating system may still cause problems. | |
4108 | ||
4109 | Support for older systems as targets for cross-compilation is less | |
4110 | problematic than support for them as hosts for GCC; if an enthusiast | |
4111 | wishes to make such a target work again (including resurrecting any of | |
80521187 | 4112 | the targets that never worked with GCC 2, starting from the last |
c7bdf0a6 ZW |
4113 | version before they were removed), patches |
4114 | @uref{../contribute.html,,following the usual requirements} would be | |
4115 | likely to be accepted, since they should not affect the support for more | |
4116 | modern targets. | |
f9047ed3 JM |
4117 | |
4118 | For some systems, old versions of GNU binutils may also be useful, | |
021c4bfd | 4119 | and are available from @file{pub/binutils/old-releases} on |
f42974dc | 4120 | @uref{http://sources.redhat.com/mirrors.html,,sources.redhat.com mirror sites}. |
f9047ed3 JM |
4121 | |
4122 | Some of the information on specific systems above relates to | |
4123 | such older systems, but much of the information | |
4124 | about GCC on such systems (which may no longer be applicable to | |
f42974dc | 4125 | current GCC) is to be found in the GCC texinfo manual. |
f9047ed3 | 4126 | |
f42974dc | 4127 | @html |
b8db17af | 4128 | <hr /> |
f42974dc | 4129 | @end html |
d8fcd085 | 4130 | @heading @anchor{elf}all ELF targets (SVR4, Solaris 2, etc.) |
f42974dc | 4131 | |
38209993 LG |
4132 | C++ support is significantly better on ELF targets if you use the |
4133 | @uref{./configure.html#with-gnu-ld,,GNU linker}; duplicate copies of | |
4134 | inlines, vtables and template instantiations will be discarded | |
4135 | automatically. | |
f42974dc DW |
4136 | |
4137 | ||
4138 | @html | |
b8db17af | 4139 | <hr /> |
f42974dc DW |
4140 | <p> |
4141 | @end html | |
4142 | @ifhtml | |
4143 | @uref{./index.html,,Return to the GCC Installation page} | |
4144 | @end ifhtml | |
4145 | @end ifset | |
4146 | ||
73e2155a JM |
4147 | @c ***Old documentation****************************************************** |
4148 | @ifset oldhtml | |
4149 | @include install-old.texi | |
4150 | @html | |
b8db17af | 4151 | <hr /> |
73e2155a JM |
4152 | <p> |
4153 | @end html | |
4154 | @ifhtml | |
4155 | @uref{./index.html,,Return to the GCC Installation page} | |
4156 | @end ifhtml | |
4157 | @end ifset | |
4158 | ||
aed5964b JM |
4159 | @c ***GFDL******************************************************************** |
4160 | @ifset gfdlhtml | |
4161 | @include fdl.texi | |
4162 | @html | |
b8db17af | 4163 | <hr /> |
aed5964b JM |
4164 | <p> |
4165 | @end html | |
4166 | @ifhtml | |
4167 | @uref{./index.html,,Return to the GCC Installation page} | |
4168 | @end ifhtml | |
4169 | @end ifset | |
4170 | ||
f42974dc DW |
4171 | @c *************************************************************************** |
4172 | @c Part 6 The End of the Document | |
4173 | @ifinfo | |
4174 | @comment node-name, next, previous, up | |
aed5964b | 4175 | @node Concept Index, , GNU Free Documentation License, Top |
f42974dc DW |
4176 | @end ifinfo |
4177 | ||
4178 | @ifinfo | |
4179 | @unnumbered Concept Index | |
4180 | ||
4181 | @printindex cp | |
4182 | ||
4183 | @contents | |
4184 | @end ifinfo | |
4185 | @bye |