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1 | \input texinfo.tex @c -*-texinfo-*- |
2 | @c @ifnothtml | |
3 | @c %**start of header | |
d7f8491b | 4 | @setfilename gccinstall.info |
f42974dc DW |
5 | @settitle Installing GCC |
6 | @setchapternewpage odd | |
7 | @c %**end of header | |
8 | @c @end ifnothtml | |
9 | ||
7771bb62 BM |
10 | @include gcc-common.texi |
11 | ||
f42974dc DW |
12 | @c Specify title for specific html page |
13 | @ifset indexhtml | |
14 | @settitle Installing GCC | |
15 | @end ifset | |
16 | @ifset specifichtml | |
17 | @settitle Host/Target specific installation notes for GCC | |
18 | @end ifset | |
67b1fbb9 KG |
19 | @ifset prerequisiteshtml |
20 | @settitle Prerequisites for GCC | |
21 | @end ifset | |
f42974dc DW |
22 | @ifset downloadhtml |
23 | @settitle Downloading GCC | |
24 | @end ifset | |
25 | @ifset configurehtml | |
26 | @settitle Installing GCC: Configuration | |
27 | @end ifset | |
28 | @ifset buildhtml | |
29 | @settitle Installing GCC: Building | |
30 | @end ifset | |
31 | @ifset testhtml | |
32 | @settitle Installing GCC: Testing | |
33 | @end ifset | |
34 | @ifset finalinstallhtml | |
35 | @settitle Installing GCC: Final installation | |
36 | @end ifset | |
37 | @ifset binarieshtml | |
38 | @settitle Installing GCC: Binaries | |
39 | @end ifset | |
73e2155a JM |
40 | @ifset oldhtml |
41 | @settitle Installing GCC: Old documentation | |
42 | @end ifset | |
aed5964b JM |
43 | @ifset gfdlhtml |
44 | @settitle Installing GCC: GNU Free Documentation License | |
45 | @end ifset | |
f42974dc | 46 | |
aed5964b | 47 | @c Copyright (C) 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
8d8da227 | 48 | @c 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
f42974dc DW |
49 | @c *** Converted to texinfo by Dean Wakerley, dean@wakerley.com |
50 | ||
d7f755c3 PB |
51 | @c IMPORTANT: whenever you modify this file, run `install.texi2html' to |
52 | @c test the generation of HTML documents for the gcc.gnu.org web pages. | |
53 | @c | |
54 | @c Do not use @footnote{} in this file as it breaks install.texi2html! | |
55 | ||
f42974dc DW |
56 | @c Include everything if we're not making html |
57 | @ifnothtml | |
58 | @set indexhtml | |
59 | @set specifichtml | |
67b1fbb9 | 60 | @set prerequisiteshtml |
f42974dc DW |
61 | @set downloadhtml |
62 | @set configurehtml | |
63 | @set buildhtml | |
64 | @set testhtml | |
65 | @set finalinstallhtml | |
66 | @set binarieshtml | |
73e2155a | 67 | @set oldhtml |
aed5964b | 68 | @set gfdlhtml |
f42974dc DW |
69 | @end ifnothtml |
70 | ||
71 | @c Part 2 Summary Description and Copyright | |
bdefb2ab | 72 | @copying |
aed5964b | 73 | Copyright @copyright{} 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
8d8da227 | 74 | 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
aed5964b JM |
75 | @sp 1 |
76 | Permission is granted to copy, distribute and/or modify this document | |
b3a8389d | 77 | under the terms of the GNU Free Documentation License, Version 1.2 or |
aed5964b JM |
78 | any later version published by the Free Software Foundation; with no |
79 | Invariant Sections, the Front-Cover texts being (a) (see below), and | |
80 | with the Back-Cover Texts being (b) (see below). A copy of the | |
81 | license is included in the section entitled ``@uref{./gfdl.html,,GNU | |
82 | Free Documentation License}''. | |
83 | ||
84 | (a) The FSF's Front-Cover Text is: | |
85 | ||
86 | A GNU Manual | |
87 | ||
88 | (b) The FSF's Back-Cover Text is: | |
89 | ||
90 | You have freedom to copy and modify this GNU Manual, like GNU | |
91 | software. Copies published by the Free Software Foundation raise | |
92 | funds for GNU development. | |
bdefb2ab | 93 | @end copying |
f42974dc | 94 | @ifinfo |
bdefb2ab | 95 | @insertcopying |
f42974dc | 96 | @end ifinfo |
c3cb54c6 | 97 | @dircategory Software development |
802f6d4b JM |
98 | @direntry |
99 | * gccinstall: (gccinstall). Installing the GNU Compiler Collection. | |
100 | @end direntry | |
f42974dc DW |
101 | |
102 | @c Part 3 Titlepage and Copyright | |
103 | @titlepage | |
7771bb62 BM |
104 | @title Installing GCC |
105 | @versionsubtitle | |
f42974dc DW |
106 | |
107 | @c The following two commands start the copyright page. | |
108 | @page | |
ef88b07d | 109 | @vskip 0pt plus 1filll |
bdefb2ab | 110 | @insertcopying |
f42974dc DW |
111 | @end titlepage |
112 | ||
7771bb62 | 113 | @c Part 4 Top node, Master Menu, and/or Table of Contents |
f42974dc DW |
114 | @ifinfo |
115 | @node Top, , , (dir) | |
116 | @comment node-name, next, Previous, up | |
117 | ||
118 | @menu | |
119 | * Installing GCC:: This document describes the generic installation | |
120 | procedure for GCC as well as detailing some target | |
f9047ed3 | 121 | specific installation instructions. |
f42974dc DW |
122 | |
123 | * Specific:: Host/target specific installation notes for GCC. | |
124 | * Binaries:: Where to get pre-compiled binaries. | |
125 | ||
73e2155a JM |
126 | * Old:: Old installation documentation. |
127 | ||
aed5964b | 128 | * GNU Free Documentation License:: How you can copy and share this manual. |
f42974dc DW |
129 | * Concept Index:: This index has two entries. |
130 | @end menu | |
131 | @end ifinfo | |
132 | ||
7771bb62 BM |
133 | @iftex |
134 | @contents | |
135 | @end iftex | |
136 | ||
f42974dc DW |
137 | @c Part 5 The Body of the Document |
138 | @c ***Installing GCC********************************************************** | |
6cfb3f16 | 139 | @ifnothtml |
f42974dc DW |
140 | @comment node-name, next, previous, up |
141 | @node Installing GCC, Binaries, , Top | |
6cfb3f16 | 142 | @end ifnothtml |
f42974dc | 143 | @ifset indexhtml |
f42974dc DW |
144 | @ifnothtml |
145 | @chapter Installing GCC | |
146 | @end ifnothtml | |
147 | ||
148 | The latest version of this document is always available at | |
f9047ed3 | 149 | @uref{http://gcc.gnu.org/install/,,http://gcc.gnu.org/install/}. |
f42974dc DW |
150 | |
151 | This document describes the generic installation procedure for GCC as well | |
f9047ed3 | 152 | as detailing some target specific installation instructions. |
f42974dc | 153 | |
f9047ed3 JM |
154 | GCC includes several components that previously were separate distributions |
155 | with their own installation instructions. This document supersedes all | |
eea81d3e | 156 | package specific installation instructions. |
f42974dc | 157 | |
f9047ed3 | 158 | @emph{Before} starting the build/install procedure please check the |
f42974dc | 159 | @ifnothtml |
eea81d3e | 160 | @ref{Specific, host/target specific installation notes}. |
f42974dc | 161 | @end ifnothtml |
c009f01f | 162 | @ifhtml |
f9047ed3 | 163 | @uref{specific.html,,host/target specific installation notes}. |
c009f01f | 164 | @end ifhtml |
f9047ed3 | 165 | We recommend you browse the entire generic installation instructions before |
f42974dc DW |
166 | you proceed. |
167 | ||
c009f01f | 168 | Lists of successful builds for released versions of GCC are |
daf2f129 | 169 | available at @uref{http://gcc.gnu.org/buildstat.html}. |
c009f01f JJ |
170 | These lists are updated as new information becomes available. |
171 | ||
f9047ed3 | 172 | The installation procedure itself is broken into five steps. |
f42974dc DW |
173 | |
174 | @ifinfo | |
175 | @menu | |
67b1fbb9 | 176 | * Prerequisites:: |
f42974dc DW |
177 | * Downloading the source:: |
178 | * Configuration:: | |
179 | * Building:: | |
180 | * Testing:: (optional) | |
181 | * Final install:: | |
182 | @end menu | |
183 | @end ifinfo | |
c009f01f | 184 | @ifhtml |
f42974dc | 185 | @enumerate |
f9047ed3 | 186 | @item |
67b1fbb9 KG |
187 | @uref{prerequisites.html,,Prerequisites} |
188 | @item | |
f42974dc | 189 | @uref{download.html,,Downloading the source} |
f42974dc | 190 | @item |
f9047ed3 JM |
191 | @uref{configure.html,,Configuration} |
192 | @item | |
193 | @uref{build.html,,Building} | |
194 | @item | |
195 | @uref{test.html,,Testing} (optional) | |
f42974dc DW |
196 | @item |
197 | @uref{finalinstall.html,,Final install} | |
198 | @end enumerate | |
c009f01f | 199 | @end ifhtml |
f42974dc | 200 | |
38209993 | 201 | Please note that GCC does not support @samp{make uninstall} and probably |
f9047ed3 | 202 | won't do so in the near future as this would open a can of worms. Instead, |
f42974dc | 203 | we suggest that you install GCC into a directory of its own and simply |
38209993 | 204 | remove that directory when you do not need that specific version of GCC |
eea81d3e RO |
205 | any longer, and, if shared libraries are installed there as well, no |
206 | more binaries exist that use them. | |
f42974dc | 207 | |
73e2155a JM |
208 | @ifhtml |
209 | There are also some @uref{old.html,,old installation instructions}, | |
210 | which are mostly obsolete but still contain some information which has | |
211 | not yet been merged into the main part of this manual. | |
212 | @end ifhtml | |
213 | ||
f42974dc | 214 | @html |
b8db17af | 215 | <hr /> |
f42974dc DW |
216 | <p> |
217 | @end html | |
218 | @ifhtml | |
219 | @uref{./index.html,,Return to the GCC Installation page} | |
aed5964b | 220 | |
bdefb2ab | 221 | @insertcopying |
f42974dc DW |
222 | @end ifhtml |
223 | @end ifset | |
224 | ||
67b1fbb9 KG |
225 | @c ***Prerequisites************************************************** |
226 | @ifnothtml | |
227 | @comment node-name, next, previous, up | |
228 | @node Prerequisites, Downloading the source, , Installing GCC | |
229 | @end ifnothtml | |
230 | @ifset prerequisiteshtml | |
231 | @ifnothtml | |
232 | @chapter Prerequisites | |
233 | @end ifnothtml | |
234 | @cindex Prerequisites | |
235 | ||
236 | GCC requires that various tools and packages be available for use in the | |
237 | build procedure. Modifying GCC sources requires additional tools | |
238 | described below. | |
239 | ||
240 | @heading Tools/packages necessary for building GCC | |
241 | @table @asis | |
242 | @item ISO C90 compiler | |
80521187 | 243 | Necessary to bootstrap GCC, although versions of GCC prior |
67b1fbb9 KG |
244 | to 3.4 also allow bootstrapping with a traditional (K&R) C compiler. |
245 | ||
80521187 | 246 | To build all languages in a cross-compiler or other configuration where |
67b1fbb9 KG |
247 | 3-stage bootstrap is not performed, you need to start with an existing |
248 | GCC binary (version 2.95 or later) because source code for language | |
249 | frontends other than C might use GCC extensions. | |
250 | ||
251 | @item GNAT | |
252 | ||
253 | In order to build the Ada compiler (GNAT) you must already have GNAT | |
254 | installed because portions of the Ada frontend are written in Ada (with | |
255 | GNAT extensions.) Refer to the Ada installation instructions for more | |
256 | specific information. | |
257 | ||
258 | @item A ``working'' POSIX compatible shell, or GNU bash | |
259 | ||
260 | Necessary when running @command{configure} because some | |
261 | @command{/bin/sh} shells have bugs and may crash when configuring the | |
80521187 GP |
262 | target libraries. In other cases, @command{/bin/sh} or @command{ksh} |
263 | have disastrous corner-case performance problems. This | |
67b1fbb9 KG |
264 | can cause target @command{configure} runs to literally take days to |
265 | complete in some cases. | |
266 | ||
267 | So on some platforms @command{/bin/ksh} is sufficient, on others it | |
268 | isn't. See the host/target specific instructions for your platform, or | |
269 | use @command{bash} to be sure. Then set @env{CONFIG_SHELL} in your | |
270 | environment to your ``good'' shell prior to running | |
271 | @command{configure}/@command{make}. | |
272 | ||
daf2f129 | 273 | @command{zsh} is not a fully compliant POSIX shell and will not |
8a36672b | 274 | work when configuring GCC@. |
1b49d06f | 275 | |
67b1fbb9 KG |
276 | @item GNU binutils |
277 | ||
278 | Necessary in some circumstances, optional in others. See the | |
279 | host/target specific instructions for your platform for the exact | |
280 | requirements. | |
281 | ||
282 | @item gzip version 1.2.4 (or later) or | |
283 | @itemx bzip2 version 1.0.2 (or later) | |
284 | ||
285 | Necessary to uncompress GCC @command{tar} files when source code is | |
286 | obtained via FTP mirror sites. | |
287 | ||
6cba282a | 288 | @item GNU make version 3.80 (or later) |
e158a5fb | 289 | |
8a36672b | 290 | You must have GNU make installed to build GCC@. |
e158a5fb | 291 | |
f44a5ab6 | 292 | @item GNU tar version 1.14 (or later) |
67b1fbb9 KG |
293 | |
294 | Necessary (only on some platforms) to untar the source code. Many | |
295 | systems' @command{tar} programs will also work, only try GNU | |
296 | @command{tar} if you have problems. | |
297 | ||
e48d66a9 | 298 | @item GNU Multiple Precision Library (GMP) version 4.1 (or later) |
bda4d063 | 299 | |
0ee2ea09 | 300 | Necessary to build GCC@. If you do not have it installed in your |
70ec446f | 301 | library search path, you will have to configure with the |
8a877c9c KG |
302 | @option{--with-gmp} configure option. See also |
303 | @option{--with-gmp-lib} and @option{--with-gmp-include}. | |
bda4d063 | 304 | |
94e1934d | 305 | @item MPFR Library version 2.3.0 (or later) |
bebf829d | 306 | |
0ee2ea09 | 307 | Necessary to build GCC@. It can be downloaded from |
b5147de7 KG |
308 | @uref{http://www.mpfr.org/}. The version of MPFR that is bundled with |
309 | GMP 4.1.x contains numerous bugs. Although GCC may appear to function | |
310 | with the buggy versions of MPFR, there are a few bugs that will not be | |
311 | fixed when using this version. It is strongly recommended to upgrade | |
312 | to the recommended version of MPFR. | |
bebf829d | 313 | |
8a877c9c KG |
314 | The @option{--with-mpfr} configure option should be used if your MPFR |
315 | Library is not installed in your default library search path. See | |
316 | also @option{--with-mpfr-lib} and @option{--with-mpfr-include}. | |
bebf829d | 317 | |
02809848 | 318 | @item @command{jar}, or InfoZIP (@command{zip} and @command{unzip}) |
b52be2c8 TT |
319 | |
320 | Necessary to build libgcj, the GCJ runtime. | |
321 | ||
67b1fbb9 KG |
322 | @end table |
323 | ||
324 | ||
325 | @heading Tools/packages necessary for modifying GCC | |
326 | @table @asis | |
565f8ce5 | 327 | @item autoconf version 2.59 |
67b1fbb9 KG |
328 | @itemx GNU m4 version 1.4 (or later) |
329 | ||
89acbae0 | 330 | Necessary when modifying @file{configure.ac}, @file{aclocal.m4}, etc.@: |
565f8ce5 | 331 | to regenerate @file{configure} and @file{config.in} files. |
67b1fbb9 | 332 | |
2d142abd | 333 | @item automake version 1.9.6 |
67b1fbb9 KG |
334 | |
335 | Necessary when modifying a @file{Makefile.am} file to regenerate its | |
ce5c1cf3 KC |
336 | associated @file{Makefile.in}. |
337 | ||
338 | Much of GCC does not use automake, so directly edit the @file{Makefile.in} | |
339 | file. Specifically this applies to the @file{gcc}, @file{intl}, | |
078e3ffe PB |
340 | @file{libcpp}, @file{libiberty}, @file{libobjc} directories as well |
341 | as any of their subdirectories. | |
ce5c1cf3 | 342 | |
ae8cacc6 | 343 | For directories that use automake, GCC requires the latest release in |
2d142abd | 344 | the 1.9.x series, which is currently 1.9.6. When regenerating a directory |
ae8cacc6 KC |
345 | to a newer version, please update all the directories using an older 1.9.x |
346 | to the latest released version. | |
ccfca4ae | 347 | |
4b794eaf | 348 | @item gettext version 0.14.5 (or later) |
4f3ce03f JM |
349 | |
350 | Needed to regenerate @file{gcc.pot}. | |
67b1fbb9 KG |
351 | |
352 | @item gperf version 2.7.2 (or later) | |
353 | ||
354 | Necessary when modifying @command{gperf} input files, e.g.@: | |
355 | @file{gcc/cp/cfns.gperf} to regenerate its associated header file, e.g.@: | |
356 | @file{gcc/cp/cfns.h}. | |
357 | ||
80521187 GP |
358 | @item DejaGnu 1.4.4 |
359 | @itemx Expect | |
360 | @itemx Tcl | |
67b1fbb9 | 361 | |
80521187 | 362 | Necessary to run the GCC testsuite; see the section on testing for details. |
67b1fbb9 KG |
363 | |
364 | @item autogen version 5.5.4 (or later) and | |
365 | @itemx guile version 1.4.1 (or later) | |
366 | ||
367 | Necessary to regenerate @file{fixinc/fixincl.x} from | |
368 | @file{fixinc/inclhack.def} and @file{fixinc/*.tpl}. | |
369 | ||
80521187 | 370 | Necessary to run @samp{make check} for @file{fixinc}. |
67b1fbb9 | 371 | |
ce5c1cf3 | 372 | Necessary to regenerate the top level @file{Makefile.in} file from |
67b1fbb9 KG |
373 | @file{Makefile.tpl} and @file{Makefile.def}. |
374 | ||
67b1fbb9 KG |
375 | @item Flex version 2.5.4 (or later) |
376 | ||
377 | Necessary when modifying @file{*.l} files. | |
378 | ||
379 | Necessary to build GCC during development because the generated output | |
80521187 | 380 | files are not included in the SVN repository. They are included in |
67b1fbb9 KG |
381 | releases. |
382 | ||
1a598a97 | 383 | @item Texinfo version 4.4 (or later) |
67b1fbb9 KG |
384 | |
385 | Necessary for running @command{makeinfo} when modifying @file{*.texi} | |
386 | files to test your changes. | |
387 | ||
cc5c2741 BM |
388 | Necessary for running @command{make dvi} or @command{make pdf} to |
389 | create printable documentation in DVI or PDF format. Texinfo version | |
390 | 4.8 or later is required for @command{make pdf}. | |
391 | ||
67b1fbb9 | 392 | Necessary to build GCC documentation during development because the |
80521187 | 393 | generated output files are not included in the SVN repository. They are |
67b1fbb9 KG |
394 | included in releases. |
395 | ||
396 | @item @TeX{} (any working version) | |
397 | ||
cc5c2741 BM |
398 | Necessary for running @command{texi2dvi} and @command{texi2pdf}, which |
399 | are used when running @command{make dvi} or @command{make pdf} to create | |
400 | DVI or PDF files, respectively. | |
67b1fbb9 | 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 | ||
69403237 TT |
427 | @item ecj1 |
428 | @itemx gjavah | |
429 | ||
430 | If you wish to modify @file{.java} files in libjava, you will need to | |
431 | configure with @option{--enable-java-maintainer-mode}, and you will need | |
432 | to have executables named @command{ecj1} and @command{gjavah} in your path. | |
433 | The @command{ecj1} executable should run the Eclipse Java compiler via | |
434 | the GCC-specific entry point. You can download a suitable jar from | |
435 | @uref{ftp://sourceware.org/pub/java/}, or by running the script | |
436 | @command{contrib/download_ecj}. | |
437 | ||
67b1fbb9 KG |
438 | @end table |
439 | ||
440 | @html | |
441 | <hr /> | |
442 | <p> | |
443 | @end html | |
444 | @ifhtml | |
445 | @uref{./index.html,,Return to the GCC Installation page} | |
446 | @end ifhtml | |
447 | @end ifset | |
448 | ||
f42974dc | 449 | @c ***Downloading the source************************************************** |
6cfb3f16 | 450 | @ifnothtml |
f42974dc | 451 | @comment node-name, next, previous, up |
67b1fbb9 | 452 | @node Downloading the source, Configuration, Prerequisites, Installing GCC |
6cfb3f16 | 453 | @end ifnothtml |
f42974dc | 454 | @ifset downloadhtml |
f42974dc DW |
455 | @ifnothtml |
456 | @chapter Downloading GCC | |
457 | @end ifnothtml | |
458 | @cindex Downloading GCC | |
459 | @cindex Downloading the Source | |
460 | ||
80521187 | 461 | GCC is distributed via @uref{http://gcc.gnu.org/svn.html,,SVN} and FTP |
eea81d3e | 462 | tarballs compressed with @command{gzip} or |
6cfb3f16 | 463 | @command{bzip2}. It is possible to download a full distribution or specific |
f42974dc DW |
464 | components. |
465 | ||
962e6e00 | 466 | Please refer to the @uref{http://gcc.gnu.org/releases.html,,releases web page} |
161d7b59 | 467 | for information on how to obtain GCC@. |
f42974dc | 468 | |
374716e7 BM |
469 | The full distribution includes the C, C++, Objective-C, Fortran, Java, |
470 | and Ada (in the case of GCC 3.1 and later) compilers. The full | |
471 | distribution also includes runtime libraries for C++, Objective-C, | |
472 | Fortran, and Java. In GCC 3.0 and later versions, the GNU compiler | |
473 | testsuites are also included in the full distribution. | |
f42974dc DW |
474 | |
475 | If you choose to download specific components, you must download the core | |
eea81d3e | 476 | GCC distribution plus any language specific distributions you wish to |
6c0a4eab | 477 | use. The core distribution includes the C language front end as well as the |
767094dd | 478 | shared components. Each language has a tarball which includes the language |
6c0a4eab | 479 | front end as well as the language runtime (when appropriate). |
f42974dc DW |
480 | |
481 | Unpack the core distribution as well as any language specific | |
482 | distributions in the same directory. | |
483 | ||
484 | If you also intend to build binutils (either to upgrade an existing | |
485 | installation or for use in place of the corresponding tools of your | |
486 | OS), unpack the binutils distribution either in the same directory or | |
487 | a separate one. In the latter case, add symbolic links to any | |
488 | components of the binutils you intend to build alongside the compiler | |
6cfb3f16 JM |
489 | (@file{bfd}, @file{binutils}, @file{gas}, @file{gprof}, @file{ld}, |
490 | @file{opcodes}, @dots{}) to the directory containing the GCC sources. | |
f42974dc DW |
491 | |
492 | @html | |
b8db17af | 493 | <hr /> |
f42974dc DW |
494 | <p> |
495 | @end html | |
496 | @ifhtml | |
497 | @uref{./index.html,,Return to the GCC Installation page} | |
498 | @end ifhtml | |
499 | @end ifset | |
500 | ||
501 | @c ***Configuration*********************************************************** | |
6cfb3f16 | 502 | @ifnothtml |
f42974dc DW |
503 | @comment node-name, next, previous, up |
504 | @node Configuration, Building, Downloading the source, Installing GCC | |
6cfb3f16 | 505 | @end ifnothtml |
f42974dc | 506 | @ifset configurehtml |
f42974dc DW |
507 | @ifnothtml |
508 | @chapter Installing GCC: Configuration | |
509 | @end ifnothtml | |
510 | @cindex Configuration | |
511 | @cindex Installing GCC: Configuration | |
512 | ||
513 | Like most GNU software, GCC must be configured before it can be built. | |
514 | This document describes the recommended configuration procedure | |
515 | for both native and cross targets. | |
516 | ||
38209993 LG |
517 | We use @var{srcdir} to refer to the toplevel source directory for |
518 | GCC; we use @var{objdir} to refer to the toplevel build/object directory. | |
519 | ||
80521187 | 520 | If you obtained the sources via SVN, @var{srcdir} must refer to the top |
38209993 LG |
521 | @file{gcc} directory, the one where the @file{MAINTAINERS} can be found, |
522 | and not its @file{gcc} subdirectory, otherwise the build will fail. | |
f42974dc | 523 | |
b4b0fb02 RO |
524 | If either @var{srcdir} or @var{objdir} is located on an automounted NFS |
525 | file system, the shell's built-in @command{pwd} command will return | |
526 | temporary pathnames. Using these can lead to various sorts of build | |
527 | problems. To avoid this issue, set the @env{PWDCMD} environment | |
528 | variable to an automounter-aware @command{pwd} command, e.g., | |
7ba4ca63 | 529 | @command{pawd} or @samp{amq -w}, during the configuration and build |
b4b0fb02 RO |
530 | phases. |
531 | ||
102b60d1 GP |
532 | First, we @strong{highly} recommend that GCC be built into a |
533 | separate directory than the sources which does @strong{not} reside | |
534 | within the source tree. This is how we generally build GCC; building | |
535 | where @var{srcdir} == @var{objdir} should still work, but doesn't | |
536 | get extensive testing; building where @var{objdir} is a subdirectory | |
537 | of @var{srcdir} is unsupported. | |
f42974dc | 538 | |
eea81d3e | 539 | If you have previously built GCC in the same directory for a |
f85b8d1a | 540 | different target machine, do @samp{make distclean} to delete all files |
377dfc82 GP |
541 | that might be invalid. One of the files this deletes is @file{Makefile}; |
542 | if @samp{make distclean} complains that @file{Makefile} does not exist | |
543 | or issues a message like ``don't know how to make distclean'' it probably | |
544 | means that the directory is already suitably clean. However, with the | |
545 | recommended method of building in a separate @var{objdir}, you should | |
546 | simply use a different @var{objdir} for each target. | |
f85b8d1a | 547 | |
38209993 LG |
548 | Second, when configuring a native system, either @command{cc} or |
549 | @command{gcc} must be in your path or you must set @env{CC} in | |
df002c7d DE |
550 | your environment before running configure. Otherwise the configuration |
551 | scripts may fail. | |
f42974dc | 552 | |
cc11cc9b | 553 | @ignore |
eea81d3e RO |
554 | Note that the bootstrap compiler and the resulting GCC must be link |
555 | compatible, else the bootstrap will fail with linker errors about | |
556 | incompatible object file formats. Several multilibed targets are | |
e69aa433 GP |
557 | affected by this requirement, see |
558 | @ifnothtml | |
559 | @ref{Specific, host/target specific installation notes}. | |
560 | @end ifnothtml | |
c009f01f | 561 | @ifhtml |
e69aa433 | 562 | @uref{specific.html,,host/target specific installation notes}. |
c009f01f | 563 | @end ifhtml |
cc11cc9b | 564 | @end ignore |
eea81d3e | 565 | |
f42974dc DW |
566 | To configure GCC: |
567 | ||
3ab51846 | 568 | @smallexample |
38209993 LG |
569 | % mkdir @var{objdir} |
570 | % cd @var{objdir} | |
eea81d3e | 571 | % @var{srcdir}/configure [@var{options}] [@var{target}] |
3ab51846 | 572 | @end smallexample |
f42974dc | 573 | |
2f41c1d6 PB |
574 | @heading Distributor options |
575 | ||
576 | If you will be distributing binary versions of GCC, with modifications | |
577 | to the source code, you should use the options described in this | |
578 | section to make clear that your version contains modifications. | |
579 | ||
580 | @table @code | |
581 | @item --with-pkgversion=@var{version} | |
582 | Specify a string that identifies your package. You may wish | |
583 | to include a build number or build date. This version string will be | |
584 | included in the output of @command{gcc --version}. This suffix does | |
585 | not replace the default version string, only the @samp{GCC} part. | |
586 | ||
587 | The default value is @samp{GCC}. | |
588 | ||
589 | @item --with-bugurl=@var{url} | |
590 | Specify the URL that users should visit if they wish to report a bug. | |
591 | You are of course welcome to forward bugs reported to you to the FSF, | |
592 | if you determine that they are not bugs in your modifications. | |
593 | ||
594 | The default value refers to the FSF's GCC bug tracker. | |
595 | ||
596 | @end table | |
f42974dc | 597 | |
ef88b07d | 598 | @heading Target specification |
f42974dc DW |
599 | @itemize @bullet |
600 | @item | |
38209993 | 601 | GCC has code to correctly determine the correct value for @var{target} |
f9047ed3 | 602 | for nearly all native systems. Therefore, we highly recommend you not |
f42974dc DW |
603 | provide a configure target when configuring a native compiler. |
604 | ||
605 | @item | |
6cfb3f16 | 606 | @var{target} must be specified as @option{--target=@var{target}} |
f9047ed3 | 607 | when configuring a cross compiler; examples of valid targets would be |
a4a4b1d3 | 608 | m68k-coff, sh-elf, etc. |
f42974dc DW |
609 | |
610 | @item | |
6cfb3f16 | 611 | Specifying just @var{target} instead of @option{--target=@var{target}} |
38209993 | 612 | implies that the host defaults to @var{target}. |
f42974dc DW |
613 | @end itemize |
614 | ||
615 | ||
ef88b07d | 616 | @heading Options specification |
f42974dc | 617 | |
ef88b07d | 618 | Use @var{options} to override several configure time options for |
7ba4ca63 | 619 | GCC@. A list of supported @var{options} follows; @samp{configure |
80f9249a JM |
620 | --help} may list other options, but those not listed below may not |
621 | work and should not normally be used. | |
f42974dc | 622 | |
c1c3bb0c ME |
623 | Note that each @option{--enable} option has a corresponding |
624 | @option{--disable} option and that each @option{--with} option has a | |
625 | corresponding @option{--without} option. | |
626 | ||
ef88b07d JM |
627 | @table @code |
628 | @item --prefix=@var{dirname} | |
629 | Specify the toplevel installation | |
f42974dc DW |
630 | directory. This is the recommended way to install the tools into a directory |
631 | other than the default. The toplevel installation directory defaults to | |
6cfb3f16 | 632 | @file{/usr/local}. |
f42974dc | 633 | |
38209993 | 634 | We @strong{highly} recommend against @var{dirname} being the same or a |
a7582c8c BE |
635 | subdirectory of @var{objdir} or vice versa. If specifying a directory |
636 | beneath a user's home directory tree, some shells will not expand | |
637 | @var{dirname} correctly if it contains the @samp{~} metacharacter; use | |
638 | @env{$HOME} instead. | |
f42974dc | 639 | |
8e5f33ff GK |
640 | The following standard @command{autoconf} options are supported. Normally you |
641 | should not need to use these options. | |
ef88b07d | 642 | @table @code |
ab130aa5 JM |
643 | @item --exec-prefix=@var{dirname} |
644 | Specify the toplevel installation directory for architecture-dependent | |
645 | files. The default is @file{@var{prefix}}. | |
646 | ||
647 | @item --bindir=@var{dirname} | |
648 | Specify the installation directory for the executables called by users | |
649 | (such as @command{gcc} and @command{g++}). The default is | |
650 | @file{@var{exec-prefix}/bin}. | |
651 | ||
652 | @item --libdir=@var{dirname} | |
653 | Specify the installation directory for object code libraries and | |
8e5f33ff GK |
654 | internal data files of GCC@. The default is @file{@var{exec-prefix}/lib}. |
655 | ||
656 | @item --libexecdir=@var{dirname} | |
657 | Specify the installation directory for internal executables of GCC@. | |
658 | The default is @file{@var{exec-prefix}/libexec}. | |
ab130aa5 JM |
659 | |
660 | @item --with-slibdir=@var{dirname} | |
661 | Specify the installation directory for the shared libgcc library. The | |
662 | default is @file{@var{libdir}}. | |
663 | ||
664 | @item --infodir=@var{dirname} | |
665 | Specify the installation directory for documentation in info format. | |
666 | The default is @file{@var{prefix}/info}. | |
667 | ||
8567c70f TT |
668 | @item --datadir=@var{dirname} |
669 | Specify the installation directory for some architecture-independent | |
670 | data files referenced by GCC@. The default is @file{@var{prefix}/share}. | |
671 | ||
ab130aa5 JM |
672 | @item --mandir=@var{dirname} |
673 | Specify the installation directory for manual pages. The default is | |
674 | @file{@var{prefix}/man}. (Note that the manual pages are only extracts from | |
8e9a4a45 | 675 | the full GCC manuals, which are provided in Texinfo format. The manpages |
ab130aa5 JM |
676 | are derived by an automatic conversion process from parts of the full |
677 | manual.) | |
678 | ||
ef88b07d JM |
679 | @item --with-gxx-include-dir=@var{dirname} |
680 | Specify | |
eea81d3e | 681 | the installation directory for G++ header files. The default is |
e0b24bce | 682 | @file{@var{prefix}/include/c++/@var{version}}. |
ecb7d6b3 | 683 | |
ef88b07d | 684 | @end table |
f42974dc | 685 | |
b21d216c AF |
686 | @item --program-prefix=@var{prefix} |
687 | GCC supports some transformations of the names of its programs when | |
8a36672b JM |
688 | installing them. This option prepends @var{prefix} to the names of |
689 | programs to install in @var{bindir} (see above). For example, specifying | |
b21d216c AF |
690 | @option{--program-prefix=foo-} would result in @samp{gcc} |
691 | being installed as @file{/usr/local/bin/foo-gcc}. | |
692 | ||
693 | @item --program-suffix=@var{suffix} | |
694 | Appends @var{suffix} to the names of programs to install in @var{bindir} | |
8a36672b | 695 | (see above). For example, specifying @option{--program-suffix=-3.1} |
b21d216c AF |
696 | would result in @samp{gcc} being installed as |
697 | @file{/usr/local/bin/gcc-3.1}. | |
698 | ||
699 | @item --program-transform-name=@var{pattern} | |
700 | Applies the @samp{sed} script @var{pattern} to be applied to the names | |
8a36672b | 701 | of programs to install in @var{bindir} (see above). @var{pattern} has to |
b21d216c | 702 | consist of one or more basic @samp{sed} editing commands, separated by |
8a36672b | 703 | semicolons. For example, if you want the @samp{gcc} program name to be |
b21d216c AF |
704 | transformed to the installed program @file{/usr/local/bin/myowngcc} and |
705 | the @samp{g++} program name to be transformed to | |
706 | @file{/usr/local/bin/gspecial++} without changing other program names, | |
707 | you could use the pattern | |
708 | @option{--program-transform-name='s/^gcc$/myowngcc/; s/^g++$/gspecial++/'} | |
709 | to achieve this effect. | |
710 | ||
711 | All three options can be combined and used together, resulting in more | |
8a36672b | 712 | complex conversion patterns. As a basic rule, @var{prefix} (and |
b21d216c AF |
713 | @var{suffix}) are prepended (appended) before further transformations |
714 | can happen with a special transformation script @var{pattern}. | |
715 | ||
8c085f6f | 716 | As currently implemented, this option only takes effect for native |
b21d216c | 717 | builds; cross compiler binaries' names are not transformed even when a |
8c085f6f | 718 | transformation is explicitly asked for by one of these options. |
b21d216c AF |
719 | |
720 | For native builds, some of the installed programs are also installed | |
721 | with the target alias in front of their name, as in | |
8a36672b | 722 | @samp{i686-pc-linux-gnu-gcc}. All of the above transformations happen |
78466c0e | 723 | before the target alias is prepended to the name---so, specifying |
b21d216c AF |
724 | @option{--program-prefix=foo-} and @option{program-suffix=-3.1}, the |
725 | resulting binary would be installed as | |
726 | @file{/usr/local/bin/i686-pc-linux-gnu-foo-gcc-3.1}. | |
727 | ||
8ecab453 | 728 | As a last shortcoming, none of the installed Ada programs are |
b21d216c AF |
729 | transformed yet, which will be fixed in some time. |
730 | ||
ef88b07d JM |
731 | @item --with-local-prefix=@var{dirname} |
732 | Specify the | |
6ac48571 JM |
733 | installation directory for local include files. The default is |
734 | @file{/usr/local}. Specify this option if you want the compiler to | |
735 | search directory @file{@var{dirname}/include} for locally installed | |
736 | header files @emph{instead} of @file{/usr/local/include}. | |
737 | ||
738 | You should specify @option{--with-local-prefix} @strong{only} if your | |
739 | site has a different convention (not @file{/usr/local}) for where to put | |
740 | site-specific files. | |
741 | ||
742 | The default value for @option{--with-local-prefix} is @file{/usr/local} | |
743 | regardless of the value of @option{--prefix}. Specifying | |
744 | @option{--prefix} has no effect on which directory GCC searches for | |
745 | local header files. This may seem counterintuitive, but actually it is | |
746 | logical. | |
747 | ||
748 | The purpose of @option{--prefix} is to specify where to @emph{install | |
749 | GCC}. The local header files in @file{/usr/local/include}---if you put | |
161d7b59 | 750 | any in that directory---are not part of GCC@. They are part of other |
6ac48571 JM |
751 | programs---perhaps many others. (GCC installs its own header files in |
752 | another directory which is based on the @option{--prefix} value.) | |
753 | ||
48209ce5 | 754 | Both the local-prefix include directory and the GCC-prefix include |
78466c0e | 755 | directory are part of GCC's ``system include'' directories. Although these |
48209ce5 JDA |
756 | two directories are not fixed, they need to be searched in the proper |
757 | order for the correct processing of the include_next directive. The | |
758 | local-prefix include directory is searched before the GCC-prefix | |
759 | include directory. Another characteristic of system include directories | |
760 | is that pedantic warnings are turned off for headers in these directories. | |
761 | ||
762 | Some autoconf macros add @option{-I @var{directory}} options to the | |
763 | compiler command line, to ensure that directories containing installed | |
764 | packages' headers are searched. When @var{directory} is one of GCC's | |
765 | system include directories, GCC will ignore the option so that system | |
766 | directories continue to be processed in the correct order. This | |
767 | may result in a search order different from what was specified but the | |
768 | directory will still be searched. | |
769 | ||
770 | GCC automatically searches for ordinary libraries using | |
771 | @env{GCC_EXEC_PREFIX}. Thus, when the same installation prefix is | |
772 | used for both GCC and packages, GCC will automatically search for | |
773 | both headers and libraries. This provides a configuration that is | |
774 | easy to use. GCC behaves in a manner similar to that when it is | |
775 | installed as a system compiler in @file{/usr}. | |
776 | ||
777 | Sites that need to install multiple versions of GCC may not want to | |
778 | use the above simple configuration. It is possible to use the | |
779 | @option{--program-prefix}, @option{--program-suffix} and | |
780 | @option{--program-transform-name} options to install multiple versions | |
781 | into a single directory, but it may be simpler to use different prefixes | |
782 | and the @option{--with-local-prefix} option to specify the location of the | |
783 | site-specific files for each version. It will then be necessary for | |
784 | users to specify explicitly the location of local site libraries | |
785 | (e.g., with @env{LIBRARY_PATH}). | |
786 | ||
787 | The same value can be used for both @option{--with-local-prefix} and | |
788 | @option{--prefix} provided it is not @file{/usr}. This can be used | |
789 | to avoid the default search of @file{/usr/local/include}. | |
790 | ||
6ac48571 JM |
791 | @strong{Do not} specify @file{/usr} as the @option{--with-local-prefix}! |
792 | The directory you use for @option{--with-local-prefix} @strong{must not} | |
793 | contain any of the system's standard header files. If it did contain | |
794 | them, certain programs would be miscompiled (including GNU Emacs, on | |
795 | certain targets), because this would override and nullify the header | |
4c64396e | 796 | file corrections made by the @command{fixincludes} script. |
6ac48571 JM |
797 | |
798 | Indications are that people who use this option use it based on mistaken | |
799 | ideas of what it is for. People use it as if it specified where to | |
161d7b59 | 800 | install part of GCC@. Perhaps they make this assumption because |
6ac48571 JM |
801 | installing GCC creates the directory. |
802 | ||
6cfb3f16 | 803 | @item --enable-shared[=@var{package}[,@dots{}]] |
0cb98517 AO |
804 | Build shared versions of libraries, if shared libraries are supported on |
805 | the target platform. Unlike GCC 2.95.x and earlier, shared libraries | |
07659e97 | 806 | are enabled by default on all platforms that support shared libraries. |
0cb98517 AO |
807 | |
808 | If a list of packages is given as an argument, build shared libraries | |
809 | only for the listed packages. For other packages, only static libraries | |
810 | will be built. Package names currently recognized in the GCC tree are | |
811 | @samp{libgcc} (also known as @samp{gcc}), @samp{libstdc++} (not | |
e22df315 | 812 | @samp{libstdc++-v3}), @samp{libffi}, @samp{zlib}, @samp{boehm-gc}, |
07659e97 | 813 | @samp{ada}, @samp{libada}, @samp{libjava} and @samp{libobjc}. |
55c45226 | 814 | Note @samp{libiberty} does not support shared libraries at all. |
0cb98517 AO |
815 | |
816 | Use @option{--disable-shared} to build only static libraries. Note that | |
817 | @option{--disable-shared} does not accept a list of package names as | |
818 | argument, only @option{--enable-shared} does. | |
f42974dc | 819 | |
ef88b07d JM |
820 | @item @anchor{with-gnu-as}--with-gnu-as |
821 | Specify that the compiler should assume that the | |
767094dd | 822 | assembler it finds is the GNU assembler. However, this does not modify |
377dfc82 GP |
823 | the rules to find an assembler and will result in confusion if the |
824 | assembler found is not actually the GNU assembler. (Confusion may also | |
8c26c999 JM |
825 | result if the compiler finds the GNU assembler but has not been |
826 | configured with @option{--with-gnu-as}.) If you have more than one | |
38209993 | 827 | assembler installed on your system, you may want to use this option in |
cc11cc9b PB |
828 | connection with @option{--with-as=@var{pathname}} or |
829 | @option{--with-build-time-tools=@var{pathname}}. | |
38209993 | 830 | |
8c085f6f JJ |
831 | The following systems are the only ones where it makes a difference |
832 | whether you use the GNU assembler. On any other system, | |
833 | @option{--with-gnu-as} has no effect. | |
834 | ||
2ff16718 | 835 | @itemize @bullet |
8c085f6f JJ |
836 | @item @samp{hppa1.0-@var{any}-@var{any}} |
837 | @item @samp{hppa1.1-@var{any}-@var{any}} | |
8f2afc21 EB |
838 | @item @samp{sparc-sun-solaris2.@var{any}} |
839 | @item @samp{sparc64-@var{any}-solaris2.@var{any}} | |
8c085f6f | 840 | @end itemize |
8c26c999 | 841 | |
8f2afc21 | 842 | On the systems listed above (except for the HP-PA, the SPARC, for ISC on |
82563d35 RS |
843 | the 386, if you use the GNU assembler, you should also use the GNU linker |
844 | (and specify @option{--with-gnu-ld}). | |
8c26c999 | 845 | |
8f2afc21 | 846 | @item @anchor{with-as}--with-as=@var{pathname} |
cc11cc9b PB |
847 | Specify that the compiler should use the assembler pointed to by |
848 | @var{pathname}, rather than the one found by the standard rules to find | |
849 | an assembler, which are: | |
f42974dc DW |
850 | @itemize @bullet |
851 | @item | |
cc11cc9b PB |
852 | Unless GCC is being built with a cross compiler, check the |
853 | @file{@var{libexec}/gcc/@var{target}/@var{version}} directory. | |
854 | @var{libexec} defaults to @file{@var{exec-prefix}/libexec}; | |
855 | @var{exec-prefix} defaults to @var{prefix}, which | |
856 | defaults to @file{/usr/local} unless overridden by the | |
857 | @option{--prefix=@var{pathname}} switch described above. @var{target} | |
858 | is the target system triple, such as @samp{sparc-sun-solaris2.7}, and | |
859 | @var{version} denotes the GCC version, such as 3.0. | |
860 | ||
f42974dc | 861 | @item |
cc11cc9b PB |
862 | If the target system is the same that you are building on, check |
863 | operating system specific directories (e.g.@: @file{/usr/ccs/bin} on | |
250d5688 | 864 | Sun Solaris 2). |
cc11cc9b PB |
865 | |
866 | @item | |
867 | Check in the @env{PATH} for a tool whose name is prefixed by the | |
868 | target system triple. | |
869 | ||
870 | @item | |
871 | Check in the @env{PATH} for a tool whose name is not prefixed by the | |
872 | target system triple, if the host and target system triple are | |
873 | the same (in other words, we use a host tool if it can be used for | |
874 | the target as well). | |
f42974dc | 875 | @end itemize |
cc11cc9b PB |
876 | |
877 | You may want to use @option{--with-as} if no assembler | |
878 | is installed in the directories listed above, or if you have multiple | |
879 | assemblers installed and want to choose one that is not found by the | |
880 | above rules. | |
f42974dc | 881 | |
ef88b07d JM |
882 | @item @anchor{with-gnu-ld}--with-gnu-ld |
883 | Same as @uref{#with-gnu-as,,@option{--with-gnu-as}} | |
8f2afc21 | 884 | but for the linker. |
f42974dc | 885 | |
eea81d3e | 886 | @item --with-ld=@var{pathname} |
8f2afc21 EB |
887 | Same as @uref{#with-as,,@option{--with-as}} |
888 | but for the linker. | |
f42974dc | 889 | |
ef88b07d JM |
890 | @item --with-stabs |
891 | Specify that stabs debugging | |
38209993 LG |
892 | information should be used instead of whatever format the host normally |
893 | uses. Normally GCC uses the same debug format as the host system. | |
f42974dc | 894 | |
8c26c999 JM |
895 | On MIPS based systems and on Alphas, you must specify whether you want |
896 | GCC to create the normal ECOFF debugging format, or to use BSD-style | |
897 | stabs passed through the ECOFF symbol table. The normal ECOFF debug | |
161d7b59 JM |
898 | format cannot fully handle languages other than C@. BSD stabs format can |
899 | handle other languages, but it only works with the GNU debugger GDB@. | |
8c26c999 JM |
900 | |
901 | Normally, GCC uses the ECOFF debugging format by default; if you | |
161d7b59 | 902 | prefer BSD stabs, specify @option{--with-stabs} when you configure GCC@. |
8c26c999 JM |
903 | |
904 | No matter which default you choose when you configure GCC, the user | |
905 | can use the @option{-gcoff} and @option{-gstabs+} options to specify explicitly | |
906 | the debug format for a particular compilation. | |
907 | ||
908 | @option{--with-stabs} is meaningful on the ISC system on the 386, also, if | |
909 | @option{--with-gas} is used. It selects use of stabs debugging | |
910 | information embedded in COFF output. This kind of debugging information | |
911 | supports C++ well; ordinary COFF debugging information does not. | |
912 | ||
913 | @option{--with-stabs} is also meaningful on 386 systems running SVR4. It | |
914 | selects use of stabs debugging information embedded in ELF output. The | |
915 | C++ compiler currently (2.6.0) does not support the DWARF debugging | |
916 | information normally used on 386 SVR4 platforms; stabs provide a | |
917 | workable alternative. This requires gas and gdb, as the normal SVR4 | |
918 | tools can not generate or interpret stabs. | |
919 | ||
eea81d3e | 920 | @item --disable-multilib |
ef88b07d | 921 | Specify that multiple target |
eea81d3e | 922 | libraries to support different target variants, calling |
1eaf20ec | 923 | conventions, etc.@: should not be built. The default is to build a |
eea81d3e | 924 | predefined set of them. |
f42974dc | 925 | |
e8515283 DE |
926 | Some targets provide finer-grained control over which multilibs are built |
927 | (e.g., @option{--disable-softfloat}): | |
928 | @table @code | |
e8515283 DE |
929 | @item arc-*-elf* |
930 | biendian. | |
931 | ||
932 | @item arm-*-* | |
933 | fpu, 26bit, underscore, interwork, biendian, nofmult. | |
934 | ||
935 | @item m68*-*-* | |
936 | softfloat, m68881, m68000, m68020. | |
937 | ||
938 | @item mips*-*-* | |
939 | single-float, biendian, softfloat. | |
940 | ||
941 | @item powerpc*-*-*, rs6000*-*-* | |
942 | aix64, pthread, softfloat, powercpu, powerpccpu, powerpcos, biendian, | |
f282ffb3 | 943 | sysv, aix. |
e8515283 DE |
944 | |
945 | @end table | |
946 | ||
ef88b07d JM |
947 | @item --enable-threads |
948 | Specify that the target | |
38209993 LG |
949 | supports threads. This affects the Objective-C compiler and runtime |
950 | library, and exception handling for other languages like C++ and Java. | |
6ac48571 | 951 | On some systems, this is the default. |
f42974dc | 952 | |
f6160ed5 LR |
953 | In general, the best (and, in many cases, the only known) threading |
954 | model available will be configured for use. Beware that on some | |
2dd76960 | 955 | systems, GCC has not been taught what threading models are generally |
3c6bb1db LR |
956 | available for the system. In this case, @option{--enable-threads} is an |
957 | alias for @option{--enable-threads=single}. | |
f6160ed5 LR |
958 | |
959 | @item --disable-threads | |
960 | Specify that threading support should be disabled for the system. | |
3c6bb1db | 961 | This is an alias for @option{--enable-threads=single}. |
f6160ed5 | 962 | |
ef88b07d JM |
963 | @item --enable-threads=@var{lib} |
964 | Specify that | |
38209993 LG |
965 | @var{lib} is the thread support library. This affects the Objective-C |
966 | compiler and runtime library, and exception handling for other languages | |
f85b8d1a JM |
967 | like C++ and Java. The possibilities for @var{lib} are: |
968 | ||
969 | @table @code | |
970 | @item aix | |
971 | AIX thread support. | |
972 | @item dce | |
973 | DCE thread support. | |
4c80872c RK |
974 | @item gnat |
975 | Ada tasking support. For non-Ada programs, this setting is equivalent | |
8a36672b | 976 | to @samp{single}. When used in conjunction with the Ada run time, it |
4c80872c RK |
977 | causes GCC to use the same thread primitives as Ada uses. This option |
978 | is necessary when using both Ada and the back end exception handling, | |
979 | which is the default for most Ada targets. | |
f85b8d1a | 980 | @item mach |
eea81d3e | 981 | Generic MACH thread support, known to work on NeXTSTEP@. (Please note |
3c6bb1db | 982 | that the file needed to support this configuration, @file{gthr-mach.h}, is |
f6160ed5 LR |
983 | missing and thus this setting will cause a known bootstrap failure.) |
984 | @item no | |
985 | This is an alias for @samp{single}. | |
f85b8d1a | 986 | @item posix |
18167442 EB |
987 | Generic POSIX/Unix98 thread support. |
988 | @item posix95 | |
989 | Generic POSIX/Unix95 thread support. | |
f6160ed5 LR |
990 | @item rtems |
991 | RTEMS thread support. | |
f85b8d1a JM |
992 | @item single |
993 | Disable thread support, should work for all platforms. | |
994 | @item solaris | |
eea81d3e | 995 | Sun Solaris 2 thread support. |
f85b8d1a JM |
996 | @item vxworks |
997 | VxWorks thread support. | |
998 | @item win32 | |
999 | Microsoft Win32 API thread support. | |
61fec9ff JB |
1000 | @item nks |
1001 | Novell Kernel Services thread support. | |
f85b8d1a | 1002 | @end table |
f42974dc | 1003 | |
8dea1cca DD |
1004 | @item --enable-tls |
1005 | Specify that the target supports TLS (Thread Local Storage). Usually | |
1006 | configure can correctly determine if TLS is supported. In cases where | |
1007 | it guesses incorrectly, TLS can be explicitly enabled or disabled with | |
1008 | @option{--enable-tls} or @option{--disable-tls}. This can happen if | |
1009 | the assembler supports TLS but the C library does not, or if the | |
1010 | assumptions made by the configure test are incorrect. | |
1011 | ||
1012 | @item --disable-tls | |
1013 | Specify that the target does not support TLS. | |
1014 | This is an alias for @option{--enable-tls=no}. | |
1015 | ||
ef88b07d | 1016 | @item --with-cpu=@var{cpu} |
7816bea0 DJ |
1017 | Specify which cpu variant the compiler should generate code for by default. |
1018 | @var{cpu} will be used as the default value of the @option{-mcpu=} switch. | |
59fbf3cb NS |
1019 | This option is only supported on some targets, including ARM, i386, M68k, |
1020 | PowerPC, and SPARC@. | |
7816bea0 DJ |
1021 | |
1022 | @item --with-schedule=@var{cpu} | |
1023 | @itemx --with-arch=@var{cpu} | |
1024 | @itemx --with-tune=@var{cpu} | |
1025 | @itemx --with-abi=@var{abi} | |
9b66ebb1 | 1026 | @itemx --with-fpu=@var{type} |
7816bea0 DJ |
1027 | @itemx --with-float=@var{type} |
1028 | These configure options provide default values for the @option{-mschedule=}, | |
9b66ebb1 PB |
1029 | @option{-march=}, @option{-mtune=}, @option{-mabi=}, and @option{-mfpu=} |
1030 | options and for @option{-mhard-float} or @option{-msoft-float}. As with | |
1031 | @option{--with-cpu}, which switches will be accepted and acceptable values | |
1032 | of the arguments depend on the target. | |
f42974dc | 1033 | |
3cf94279 PB |
1034 | @item --with-mode=@var{mode} |
1035 | Specify if the compiler should default to @option{-marm} or @option{-mthumb}. | |
1036 | This option is only supported on ARM targets. | |
1037 | ||
9f0df97a DD |
1038 | @item --with-divide=@var{type} |
1039 | Specify how the compiler should generate code for checking for | |
1040 | division by zero. This option is only supported on the MIPS target. | |
1041 | The possibilities for @var{type} are: | |
1042 | @table @code | |
1043 | @item traps | |
1044 | Division by zero checks use conditional traps (this is the default on | |
1045 | systems that support conditional traps). | |
1046 | @item breaks | |
1047 | Division by zero checks use the break instruction. | |
1048 | @end table | |
1049 | ||
66471b47 DD |
1050 | @c If you make --with-llsc the default for additional targets, |
1051 | @c update the --with-llsc description in the MIPS section below. | |
1052 | ||
1053 | @item --with-llsc | |
1054 | On MIPS targets, make @option{-mllsc} the default when no | |
1055 | @option{-mno-lsc} option is passed. This is the default for | |
1056 | Linux-based targets, as the kernel will emulate them if the ISA does | |
1057 | not provide them. | |
1058 | ||
1059 | @item --without-llsc | |
1060 | On MIPS targets, make @option{-mno-llsc} the default when no | |
1061 | @option{-mllsc} option is passed. | |
1062 | ||
354b7da5 DH |
1063 | @item --enable-__cxa_atexit |
1064 | Define if you want to use __cxa_atexit, rather than atexit, to | |
1065 | register C++ destructors for local statics and global objects. | |
1066 | This is essential for fully standards-compliant handling of | |
8a36672b JM |
1067 | destructors, but requires __cxa_atexit in libc. This option is currently |
1068 | only available on systems with GNU libc. When enabled, this will cause | |
cea79118 | 1069 | @option{-fuse-cxa-atexit} to be passed by default. |
354b7da5 | 1070 | |
ef88b07d JM |
1071 | @item --enable-target-optspace |
1072 | Specify that target | |
38209993 LG |
1073 | libraries should be optimized for code space instead of code speed. |
1074 | This is the default for the m32r platform. | |
f42974dc | 1075 | |
ab130aa5 JM |
1076 | @item --disable-cpp |
1077 | Specify that a user visible @command{cpp} program should not be installed. | |
1078 | ||
1079 | @item --with-cpp-install-dir=@var{dirname} | |
1080 | Specify that the user visible @command{cpp} program should be installed | |
1081 | in @file{@var{prefix}/@var{dirname}/cpp}, in addition to @var{bindir}. | |
f42974dc | 1082 | |
07cf4226 DM |
1083 | @item --enable-initfini-array |
1084 | Force the use of sections @code{.init_array} and @code{.fini_array} | |
1085 | (instead of @code{.init} and @code{.fini}) for constructors and | |
1086 | destructors. Option @option{--disable-initfini-array} has the | |
1087 | opposite effect. If neither option is specified, the configure script | |
1088 | will try to guess whether the @code{.init_array} and | |
1089 | @code{.fini_array} sections are supported and, if they are, use them. | |
1090 | ||
ef88b07d JM |
1091 | @item --enable-maintainer-mode |
1092 | The build rules that | |
6cfb3f16 | 1093 | regenerate the GCC master message catalog @file{gcc.pot} are normally |
767094dd JM |
1094 | disabled. This is because it can only be rebuilt if the complete source |
1095 | tree is present. If you have changed the sources and want to rebuild the | |
6ac48571 | 1096 | catalog, configuring with @option{--enable-maintainer-mode} will enable |
767094dd | 1097 | this. Note that you need a recent version of the @code{gettext} tools |
6ac48571 JM |
1098 | to do so. |
1099 | ||
f5c3bb4b PB |
1100 | @item --disable-bootstrap |
1101 | For a native build, the default configuration is to perform | |
1102 | a 3-stage bootstrap of the compiler when @samp{make} is invoked, | |
1103 | testing that GCC can compile itself correctly. If you want to disable | |
1104 | this process, you can configure with @option{--disable-bootstrap}. | |
1105 | ||
1106 | @item --enable-bootstrap | |
1107 | In special cases, you may want to perform a 3-stage build | |
1108 | even if the target and host triplets are different. | |
1109 | This could happen when the host can run code compiled for | |
1110 | the target (e.g.@: host is i686-linux, target is i486-linux). | |
1111 | Starting from GCC 4.2, to do this you have to configure explicitly | |
1112 | with @option{--enable-bootstrap}. | |
1113 | ||
51b9ff45 | 1114 | @item --enable-generated-files-in-srcdir |
80521187 | 1115 | Neither the .c and .h files that are generated from Bison and flex nor the |
51b9ff45 | 1116 | info manuals and man pages that are built from the .texi files are present |
80521187 GP |
1117 | in the SVN development tree. When building GCC from that development tree, |
1118 | or from one of our snapshots, those generated files are placed in your | |
1119 | build directory, which allows for the source to be in a readonly | |
1120 | directory. | |
51b9ff45 KC |
1121 | |
1122 | If you configure with @option{--enable-generated-files-in-srcdir} then those | |
1123 | generated files will go into the source directory. This is mainly intended | |
1124 | for generating release or prerelease tarballs of the GCC sources, since it | |
80521187 GP |
1125 | is not a requirement that the users of source releases to have flex, Bison, |
1126 | or makeinfo. | |
51b9ff45 | 1127 | |
ef88b07d JM |
1128 | @item --enable-version-specific-runtime-libs |
1129 | Specify | |
38209993 | 1130 | that runtime libraries should be installed in the compiler specific |
8e5f33ff GK |
1131 | subdirectory (@file{@var{libdir}/gcc}) rather than the usual places. In |
1132 | addition, @samp{libstdc++}'s include files will be installed into | |
1133 | @file{@var{libdir}} unless you overruled it by using | |
6cfb3f16 | 1134 | @option{--with-gxx-include-dir=@var{dirname}}. Using this option is |
38209993 | 1135 | particularly useful if you intend to use several versions of GCC in |
8a36672b | 1136 | parallel. This is currently supported by @samp{libgfortran}, |
b9034bbd AJ |
1137 | @samp{libjava}, @samp{libmudflap}, @samp{libstdc++}, and @samp{libobjc}. |
1138 | ||
ef88b07d JM |
1139 | @item --enable-languages=@var{lang1},@var{lang2},@dots{} |
1140 | Specify that only a particular subset of compilers and | |
767094dd | 1141 | their runtime libraries should be built. For a list of valid values for |
6cfb3f16 | 1142 | @var{langN} you can issue the following command in the |
eea81d3e | 1143 | @file{gcc} directory of your GCC source tree:@* |
3ab51846 | 1144 | @smallexample |
eea81d3e | 1145 | grep language= */config-lang.in |
3ab51846 | 1146 | @end smallexample |
eea81d3e | 1147 | Currently, you can use any of the following: |
47530dd9 | 1148 | @code{all}, @code{ada}, @code{c}, @code{c++}, @code{fortran}, @code{java}, |
e8645a40 | 1149 | @code{objc}, @code{obj-c++}. |
f995c51f JW |
1150 | Building the Ada compiler has special requirements, see below. |
1151 | If you do not pass this flag, or specify the option @code{all}, then all | |
1152 | default languages available in the @file{gcc} sub-tree will be configured. | |
e8645a40 | 1153 | Ada and Objective-C++ are not default languages; the rest are. |
cc11cc9b PB |
1154 | Re-defining @code{LANGUAGES} when calling @samp{make} @strong{does not} |
1155 | work anymore, as those language sub-directories might not have been | |
1156 | configured! | |
f42974dc | 1157 | |
80ca80e9 BM |
1158 | @item --enable-stage1-languages=@var{lang1},@var{lang2},@dots{} |
1159 | Specify that a particular subset of compilers and their runtime | |
1160 | libraries should be built with the system C compiler during stage 1 of | |
1161 | the bootstrap process, rather than only in later stages with the | |
1162 | bootstrapped C compiler. The list of valid values is the same as for | |
1163 | @option{--enable-languages}, and the option @code{all} will select all | |
1164 | of the languages enabled by @option{--enable-languages}. This option is | |
1165 | primarily useful for GCC development; for instance, when a development | |
1166 | version of the compiler cannot bootstrap due to compiler bugs, or when | |
1167 | one is debugging front ends other than the C front end. When this | |
1168 | option is used, one can then build the target libraries for the | |
1169 | specified languages with the stage-1 compiler by using @command{make | |
1170 | stage1-bubble all-target}, or run the testsuite on the stage-1 compiler | |
1171 | for the specified languages using @command{make stage1-start check-gcc}. | |
1172 | ||
cd271054 AC |
1173 | @item --disable-libada |
1174 | Specify that the run-time libraries and tools used by GNAT should not | |
1175 | be built. This can be useful for debugging, or for compatibility with | |
c2910edf | 1176 | previous Ada build procedures, when it was required to explicitly |
cd271054 AC |
1177 | do a @samp{make -C gcc gnatlib_and_tools}. |
1178 | ||
ef0087a7 KH |
1179 | @item --disable-libssp |
1180 | Specify that the run-time libraries for stack smashing protection | |
1181 | should not be built. | |
1182 | ||
4fe7a8bc AH |
1183 | @item --disable-libgomp |
1184 | Specify that the run-time libraries used by GOMP should not be built. | |
1185 | ||
ef88b07d JM |
1186 | @item --with-dwarf2 |
1187 | Specify that the compiler should | |
eea81d3e | 1188 | use DWARF 2 debugging information as the default. |
f85b8d1a | 1189 | |
7f970b70 AM |
1190 | @item --enable-targets=all |
1191 | @itemx --enable-targets=@var{target_list} | |
1192 | Some GCC targets, e.g.@: powerpc64-linux, build bi-arch compilers. | |
1193 | These are compilers that are able to generate either 64-bit or 32-bit | |
8ab5f5c9 | 1194 | code. Typically, the corresponding 32-bit target, e.g.@: |
7f970b70 AM |
1195 | powerpc-linux for powerpc64-linux, only generates 32-bit code. This |
1196 | option enables the 32-bit target to be a bi-arch compiler, which is | |
1197 | useful when you want a bi-arch compiler that defaults to 32-bit, and | |
1198 | you are building a bi-arch or multi-arch binutils in a combined tree. | |
5f7ca34b DM |
1199 | Currently, this option only affects sparc-linux, powerpc-linux and |
1200 | x86-linux. | |
7f970b70 AM |
1201 | |
1202 | @item --enable-secureplt | |
1203 | This option enables @option{-msecure-plt} by default for powerpc-linux. | |
1204 | @ifnothtml | |
1205 | @xref{RS/6000 and PowerPC Options,, RS/6000 and PowerPC Options, gcc, | |
1206 | Using the GNU Compiler Collection (GCC)}, | |
1207 | @end ifnothtml | |
1208 | @ifhtml | |
1209 | See ``RS/6000 and PowerPC Options'' in the main manual | |
1210 | @end ifhtml | |
1211 | ||
922e3e33 UB |
1212 | @item --enable-cld |
1213 | This option enables @option{-mcld} by default for 32-bit x86 targets. | |
1214 | @ifnothtml | |
1215 | @xref{i386 and x86-64 Options,, i386 and x86-64 Options, gcc, | |
1216 | Using the GNU Compiler Collection (GCC)}, | |
1217 | @end ifnothtml | |
1218 | @ifhtml | |
1219 | See ``i386 and x86-64 Options'' in the main manual | |
1220 | @end ifhtml | |
1221 | ||
f85b8d1a | 1222 | @item --enable-win32-registry |
eea81d3e | 1223 | @itemx --enable-win32-registry=@var{key} |
f85b8d1a | 1224 | @itemx --disable-win32-registry |
95fef11f | 1225 | The @option{--enable-win32-registry} option enables Microsoft Windows-hosted GCC |
f85b8d1a JM |
1226 | to look up installations paths in the registry using the following key: |
1227 | ||
1228 | @smallexample | |
eea81d3e | 1229 | @code{HKEY_LOCAL_MACHINE\SOFTWARE\Free Software Foundation\@var{key}} |
f85b8d1a JM |
1230 | @end smallexample |
1231 | ||
eea81d3e | 1232 | @var{key} defaults to GCC version number, and can be overridden by the |
8a36672b | 1233 | @option{--enable-win32-registry=@var{key}} option. Vendors and distributors |
f85b8d1a JM |
1234 | who use custom installers are encouraged to provide a different key, |
1235 | perhaps one comprised of vendor name and GCC version number, to | |
767094dd | 1236 | avoid conflict with existing installations. This feature is enabled |
6cfb3f16 | 1237 | by default, and can be disabled by @option{--disable-win32-registry} |
f85b8d1a JM |
1238 | option. This option has no effect on the other hosts. |
1239 | ||
1240 | @item --nfp | |
1241 | Specify that the machine does not have a floating point unit. This | |
c9693e96 LH |
1242 | option only applies to @samp{m68k-sun-sunos@var{n}}. On any other |
1243 | system, @option{--nfp} has no effect. | |
f85b8d1a | 1244 | |
dd859b8a KG |
1245 | @item --enable-werror |
1246 | @itemx --disable-werror | |
1247 | @itemx --enable-werror=yes | |
1248 | @itemx --enable-werror=no | |
1249 | When you specify this option, it controls whether certain files in the | |
1250 | compiler are built with @option{-Werror} in bootstrap stage2 and later. | |
1251 | If you don't specify it, @option{-Werror} is turned on for the main | |
1252 | development trunk. However it defaults to off for release branches and | |
1253 | final releases. The specific files which get @option{-Werror} are | |
1254 | controlled by the Makefiles. | |
1255 | ||
f85b8d1a JM |
1256 | @item --enable-checking |
1257 | @itemx --enable-checking=@var{list} | |
cdce5c16 | 1258 | When you specify this option, the compiler is built to perform internal |
e5080aa6 | 1259 | consistency checks of the requested complexity. This does not change the |
cdce5c16 NS |
1260 | generated code, but adds error checking within the compiler. This will |
1261 | slow down the compiler and may only work properly if you are building | |
1262 | the compiler with GCC@. This is @samp{yes} by default when building | |
80521187 | 1263 | from SVN or snapshots, but @samp{release} for releases. More control |
cdce5c16 NS |
1264 | over the checks may be had by specifying @var{list}. The categories of |
1265 | checks available are @samp{yes} (most common checks | |
1266 | @samp{assert,misc,tree,gc,rtlflag,runtime}), @samp{no} (no checks at | |
1267 | all), @samp{all} (all but @samp{valgrind}), @samp{release} (cheapest | |
1268 | checks @samp{assert,runtime}) or @samp{none} (same as @samp{no}). | |
1269 | Individual checks can be enabled with these flags @samp{assert}, | |
604f825c | 1270 | @samp{df}, @samp{fold}, @samp{gc}, @samp{gcac} @samp{misc}, @samp{rtl}, |
cdce5c16 NS |
1271 | @samp{rtlflag}, @samp{runtime}, @samp{tree}, and @samp{valgrind}. |
1272 | ||
1273 | The @samp{valgrind} check requires the external @command{valgrind} | |
ccf548a7 | 1274 | simulator, available from @uref{http://valgrind.org/}. The |
604f825c | 1275 | @samp{df}, @samp{rtl}, @samp{gcac} and @samp{valgrind} checks are very expensive. |
cdce5c16 NS |
1276 | To disable all checking, @samp{--disable-checking} or |
1277 | @samp{--enable-checking=none} must be explicitly requested. Disabling | |
1278 | assertions will make the compiler and runtime slightly faster but | |
1279 | increase the risk of undetected internal errors causing wrong code to be | |
1280 | generated. | |
f85b8d1a | 1281 | |
22aa533e | 1282 | @item --enable-coverage |
31775d31 | 1283 | @itemx --enable-coverage=@var{level} |
22aa533e | 1284 | With this option, the compiler is built to collect self coverage |
8a36672b JM |
1285 | information, every time it is run. This is for internal development |
1286 | purposes, and only works when the compiler is being built with gcc. The | |
22aa533e | 1287 | @var{level} argument controls whether the compiler is built optimized or |
8a36672b | 1288 | not, values are @samp{opt} and @samp{noopt}. For coverage analysis you |
22aa533e | 1289 | want to disable optimization, for performance analysis you want to |
8a36672b | 1290 | enable optimization. When coverage is enabled, the default level is |
22aa533e NS |
1291 | without optimization. |
1292 | ||
439a7e54 | 1293 | @item --enable-gather-detailed-mem-stats |
95ea367d | 1294 | When this option is specified more detailed information on memory |
439a7e54 | 1295 | allocation is gathered. This information is printed when using |
daf2f129 | 1296 | @option{-fmem-report}. |
439a7e54 | 1297 | |
5dd90688 RG |
1298 | @item --with-gc |
1299 | @itemx --with-gc=@var{choice} | |
1300 | With this option you can specify the garbage collector implementation | |
1301 | used during the compilation process. @var{choice} can be one of | |
1302 | @samp{page} and @samp{zone}, where @samp{page} is the default. | |
1303 | ||
f85b8d1a JM |
1304 | @item --enable-nls |
1305 | @itemx --disable-nls | |
6cfb3f16 | 1306 | The @option{--enable-nls} option enables Native Language Support (NLS), |
f85b8d1a | 1307 | which lets GCC output diagnostics in languages other than American |
767094dd | 1308 | English. Native Language Support is enabled by default if not doing a |
161d7b59 | 1309 | canadian cross build. The @option{--disable-nls} option disables NLS@. |
f85b8d1a JM |
1310 | |
1311 | @item --with-included-gettext | |
c771326b | 1312 | If NLS is enabled, the @option{--with-included-gettext} option causes the build |
021c4bfd | 1313 | procedure to prefer its copy of GNU @command{gettext}. |
f85b8d1a JM |
1314 | |
1315 | @item --with-catgets | |
1316 | If NLS is enabled, and if the host lacks @code{gettext} but has the | |
1317 | inferior @code{catgets} interface, the GCC build procedure normally | |
1318 | ignores @code{catgets} and instead uses GCC's copy of the GNU | |
6cfb3f16 | 1319 | @code{gettext} library. The @option{--with-catgets} option causes the |
f85b8d1a | 1320 | build procedure to use the host's @code{catgets} in this situation. |
80f9249a | 1321 | |
5304400d CR |
1322 | @item --with-libiconv-prefix=@var{dir} |
1323 | Search for libiconv header files in @file{@var{dir}/include} and | |
1324 | libiconv library files in @file{@var{dir}/lib}. | |
1325 | ||
9340544b ZW |
1326 | @item --enable-obsolete |
1327 | Enable configuration for an obsoleted system. If you attempt to | |
1328 | configure GCC for a system (build, host, or target) which has been | |
1329 | obsoleted, and you do not specify this flag, configure will halt with an | |
1330 | error message. | |
1331 | ||
1332 | All support for systems which have been obsoleted in one release of GCC | |
1333 | is removed entirely in the next major release, unless someone steps | |
1334 | forward to maintain the port. | |
486aa804 BE |
1335 | |
1336 | @item --enable-decimal-float | |
79b87c74 MM |
1337 | @itemx --enable-decimal-float=yes |
1338 | @itemx --enable-decimal-float=no | |
1339 | @itemx --enable-decimal-float=bid | |
1340 | @itemx --enable-decimal-float=dpd | |
486aa804 | 1341 | @itemx --disable-decimal-float |
79b87c74 MM |
1342 | Enable (or disable) support for the C decimal floating point extension |
1343 | that is in the IEEE 754R extension to the IEEE754 floating point | |
1344 | standard. This is enabled by default only on PowerPC, i386, and | |
1345 | x86_64 GNU/Linux systems. Other systems may also support it, but | |
1346 | require the user to specifically enable it. You can optionally | |
1347 | control which decimal floating point format is used (either @samp{bid} | |
1348 | or @samp{dpd}). The @samp{bid} (binary integer decimal) format is | |
1349 | default on i386 and x86_64 systems, and the @samp{dpd} (densely packed | |
1350 | decimal) format is default on PowerPC systems. | |
486aa804 | 1351 | |
ab22c1fa CF |
1352 | @item --enable-fixed-point |
1353 | @itemx --disable-fixed-point | |
1354 | Enable (or disable) support for C fixed-point arithmetic. | |
1355 | This option is enabled by default for some targets (such as MIPS) which | |
1356 | have hardware-support for fixed-point operations. On other targets, you | |
1357 | may enable this option manually. | |
1358 | ||
ed965309 JJ |
1359 | @item --with-long-double-128 |
1360 | Specify if @code{long double} type should be 128-bit by default on selected | |
1361 | GNU/Linux architectures. If using @code{--without-long-double-128}, | |
1362 | @code{long double} will be by default 64-bit, the same as @code{double} type. | |
1363 | When neither of these configure options are used, the default will be | |
1364 | 128-bit @code{long double} when built against GNU C Library 2.4 and later, | |
1365 | 64-bit @code{long double} otherwise. | |
1366 | ||
8a877c9c KG |
1367 | @item --with-gmp=@var{pathname} |
1368 | @itemx --with-gmp-include=@var{pathname} | |
1369 | @itemx --with-gmp-lib=@var{pathname} | |
1370 | @itemx --with-mpfr=@var{pathname} | |
1371 | @itemx --with-mpfr-include=@var{pathname} | |
1372 | @itemx --with-mpfr-lib=@var{pathname} | |
1373 | If you do not have GMP (the GNU Multiple Precision library) and the | |
1374 | MPFR Libraries installed in a standard location and you want to build | |
1375 | GCC, you can explicitly specify the directory where they are installed | |
1376 | (@samp{--with-gmp=@var{gmpinstalldir}}, | |
1377 | @samp{--with-mpfr=@var{mpfrinstalldir}}). The | |
1378 | @option{--with-gmp=@var{gmpinstalldir}} option is shorthand for | |
1379 | @option{--with-gmp-lib=@var{gmpinstalldir}/lib} and | |
1380 | @option{--with-gmp-include=@var{gmpinstalldir}/include}. Likewise the | |
1381 | @option{--with-mpfr=@var{mpfrinstalldir}} option is shorthand for | |
1382 | @option{--with-mpfr-lib=@var{mpfrinstalldir}/lib} and | |
1383 | @option{--with-mpfr-include=@var{mpfrinstalldir}/include}. If these | |
1384 | shorthand assumptions are not correct, you can use the explicit | |
1385 | include and lib options directly. | |
1386 | ||
c8aea42c PB |
1387 | @item --with-debug-prefix-map=@var{map} |
1388 | Convert source directory names using @option{-fdebug-prefix-map} when | |
1389 | building runtime libraries. @samp{@var{map}} is a space-separated | |
1390 | list of maps of the form @samp{@var{old}=@var{new}}. | |
1391 | ||
ef88b07d | 1392 | @end table |
f42974dc | 1393 | |
c1c3bb0c ME |
1394 | @subheading Cross-Compiler-Specific Options |
1395 | The following options only apply to building cross compilers. | |
ef88b07d | 1396 | @table @code |
4977bab6 ZW |
1397 | @item --with-sysroot |
1398 | @itemx --with-sysroot=@var{dir} | |
1399 | Tells GCC to consider @var{dir} as the root of a tree that contains a | |
1400 | (subset of) the root filesystem of the target operating system. | |
1401 | Target system headers, libraries and run-time object files will be | |
1402 | searched in there. The specified directory is not copied into the | |
1403 | install tree, unlike the options @option{--with-headers} and | |
1404 | @option{--with-libs} that this option obsoletes. The default value, | |
1405 | in case @option{--with-sysroot} is not given an argument, is | |
047d636f DJ |
1406 | @option{$@{gcc_tooldir@}/sys-root}. If the specified directory is a |
1407 | subdirectory of @option{$@{exec_prefix@}}, then it will be found relative to | |
1408 | the GCC binaries if the installation tree is moved. | |
4977bab6 | 1409 | |
160633c6 MM |
1410 | @item --with-build-sysroot |
1411 | @itemx --with-build-sysroot=@var{dir} | |
1412 | Tells GCC to consider @var{dir} as the system root (see | |
526635cb | 1413 | @option{--with-sysroot}) while building target libraries, instead of |
160633c6 MM |
1414 | the directory specified with @option{--with-sysroot}. This option is |
1415 | only useful when you are already using @option{--with-sysroot}. You | |
526635cb | 1416 | can use @option{--with-build-sysroot} when you are configuring with |
160633c6 | 1417 | @option{--prefix} set to a directory that is different from the one in |
526635cb MM |
1418 | which you are installing GCC and your target libraries. |
1419 | ||
1420 | This option affects the system root for the compiler used to build | |
1421 | target libraries (which runs on the build system); it does not affect | |
1422 | the compiler which is used to build GCC itself. | |
160633c6 | 1423 | |
65a824f6 JT |
1424 | @item --with-headers |
1425 | @itemx --with-headers=@var{dir} | |
4977bab6 | 1426 | Deprecated in favor of @option{--with-sysroot}. |
65a824f6 JT |
1427 | Specifies that target headers are available when building a cross compiler. |
1428 | The @var{dir} argument specifies a directory which has the target include | |
1429 | files. These include files will be copied into the @file{gcc} install | |
1430 | directory. @emph{This option with the @var{dir} argument is required} when | |
1431 | building a cross compiler, if @file{@var{prefix}/@var{target}/sys-include} | |
1432 | doesn't pre-exist. If @file{@var{prefix}/@var{target}/sys-include} does | |
1433 | pre-exist, the @var{dir} argument may be omitted. @command{fixincludes} | |
8a36672b | 1434 | will be run on these files to make them compatible with GCC@. |
264d65c1 AP |
1435 | |
1436 | @item --without-headers | |
1437 | Tells GCC not use any target headers from a libc when building a cross | |
2dd76960 | 1438 | compiler. When crossing to GNU/Linux, you need the headers so GCC |
264d65c1 | 1439 | can build the exception handling for libgcc. |
264d65c1 | 1440 | |
65a824f6 JT |
1441 | @item --with-libs |
1442 | @itemx --with-libs=``@var{dir1} @var{dir2} @dots{} @var{dirN}'' | |
4977bab6 | 1443 | Deprecated in favor of @option{--with-sysroot}. |
38209993 LG |
1444 | Specifies a list of directories which contain the target runtime |
1445 | libraries. These libraries will be copied into the @file{gcc} install | |
65a824f6 JT |
1446 | directory. If the directory list is omitted, this option has no |
1447 | effect. | |
cc11cc9b | 1448 | |
ef88b07d | 1449 | @item --with-newlib |
eea81d3e | 1450 | Specifies that @samp{newlib} is |
38209993 | 1451 | being used as the target C library. This causes @code{__eprintf} to be |
eea81d3e RO |
1452 | omitted from @file{libgcc.a} on the assumption that it will be provided by |
1453 | @samp{newlib}. | |
cc11cc9b PB |
1454 | |
1455 | @item --with-build-time-tools=@var{dir} | |
1456 | Specifies where to find the set of target tools (assembler, linker, etc.) | |
1457 | that will be used while building GCC itself. This option can be useful | |
1458 | if the directory layouts are different between the system you are building | |
1459 | GCC on, and the system where you will deploy it. | |
1460 | ||
1461 | For example, on a @option{ia64-hp-hpux} system, you may have the GNU | |
1462 | assembler and linker in @file{/usr/bin}, and the native tools in a | |
1463 | different path, and build a toolchain that expects to find the | |
1464 | native tools in @file{/usr/bin}. | |
1465 | ||
1466 | When you use this option, you should ensure that @var{dir} includes | |
1467 | @command{ar}, @command{as}, @command{ld}, @command{nm}, | |
1468 | @command{ranlib} and @command{strip} if necessary, and possibly | |
1469 | @command{objdump}. Otherwise, GCC may use an inconsistent set of | |
1470 | tools. | |
ef88b07d | 1471 | @end table |
f9047ed3 | 1472 | |
c1c3bb0c ME |
1473 | @subheading Java-Specific Options |
1474 | ||
1475 | The following option applies to the build of the Java front end. | |
1476 | ||
1477 | @table @code | |
1478 | @item --disable-libgcj | |
1479 | Specify that the run-time libraries | |
1480 | used by GCJ should not be built. This is useful in case you intend | |
1481 | to use GCJ with some other run-time, or you're going to install it | |
1482 | separately, or it just happens not to build on your particular | |
1483 | machine. In general, if the Java front end is enabled, the GCJ | |
1484 | libraries will be enabled too, unless they're known to not work on | |
1485 | the target platform. If GCJ is enabled but @samp{libgcj} isn't built, you | |
1486 | may need to port it; in this case, before modifying the top-level | |
1487 | @file{configure.in} so that @samp{libgcj} is enabled by default on this platform, | |
1488 | you may use @option{--enable-libgcj} to override the default. | |
1489 | ||
1490 | @end table | |
1491 | ||
1492 | The following options apply to building @samp{libgcj}. | |
1493 | ||
1494 | @subsubheading General Options | |
1495 | ||
1496 | @table @code | |
69403237 TT |
1497 | @item --enable-java-maintainer-mode |
1498 | By default the @samp{libjava} build will not attempt to compile the | |
1499 | @file{.java} source files to @file{.class}. Instead, it will use the | |
1500 | @file{.class} files from the source tree. If you use this option you | |
1501 | must have executables named @command{ecj1} and @command{gjavah} in your path | |
1502 | for use by the build. You must use this option if you intend to | |
1503 | modify any @file{.java} files in @file{libjava}. | |
1504 | ||
1505 | @item --with-java-home=@var{dirname} | |
1506 | This @samp{libjava} option overrides the default value of the | |
1507 | @samp{java.home} system property. It is also used to set | |
1508 | @samp{sun.boot.class.path} to @file{@var{dirname}/lib/rt.jar}. By | |
1509 | default @samp{java.home} is set to @file{@var{prefix}} and | |
1510 | @samp{sun.boot.class.path} to | |
1511 | @file{@var{datadir}/java/libgcj-@var{version}.jar}. | |
1512 | ||
1513 | @item --with-ecj-jar=@var{filename} | |
1514 | This option can be used to specify the location of an external jar | |
1515 | file containing the Eclipse Java compiler. A specially modified | |
1516 | version of this compiler is used by @command{gcj} to parse | |
1517 | @file{.java} source files. If this option is given, the | |
1518 | @samp{libjava} build will create and install an @file{ecj1} executable | |
1519 | which uses this jar file at runtime. | |
1520 | ||
1521 | If this option is not given, but an @file{ecj.jar} file is found in | |
1522 | the topmost source tree at configure time, then the @samp{libgcj} | |
1523 | build will create and install @file{ecj1}, and will also install the | |
1524 | discovered @file{ecj.jar} into a suitable place in the install tree. | |
1525 | ||
1526 | If @file{ecj1} is not installed, then the user will have to supply one | |
1527 | on his path in order for @command{gcj} to properly parse @file{.java} | |
1528 | source files. A suitable jar is available from | |
1529 | @uref{ftp://sourceware.org/pub/java/}. | |
1530 | ||
c1c3bb0c ME |
1531 | @item --disable-getenv-properties |
1532 | Don't set system properties from @env{GCJ_PROPERTIES}. | |
1533 | ||
1534 | @item --enable-hash-synchronization | |
8a36672b | 1535 | Use a global hash table for monitor locks. Ordinarily, |
c1c3bb0c | 1536 | @samp{libgcj}'s @samp{configure} script automatically makes |
8a36672b | 1537 | the correct choice for this option for your platform. Only use |
c1c3bb0c ME |
1538 | this if you know you need the library to be configured differently. |
1539 | ||
1540 | @item --enable-interpreter | |
8a36672b JM |
1541 | Enable the Java interpreter. The interpreter is automatically |
1542 | enabled by default on all platforms that support it. This option | |
c1c3bb0c ME |
1543 | is really only useful if you want to disable the interpreter |
1544 | (using @option{--disable-interpreter}). | |
1545 | ||
1546 | @item --disable-java-net | |
8a36672b | 1547 | Disable java.net. This disables the native part of java.net only, |
c1c3bb0c ME |
1548 | using non-functional stubs for native method implementations. |
1549 | ||
1550 | @item --disable-jvmpi | |
1551 | Disable JVMPI support. | |
1552 | ||
a507baad DD |
1553 | @item --disable-libgcj-bc |
1554 | Disable BC ABI compilation of certain parts of libgcj. By default, | |
1555 | some portions of libgcj are compiled with @option{-findirect-dispatch} | |
a26c7632 DD |
1556 | and @option{-fno-indirect-classes}, allowing them to be overridden at |
1557 | run-time. | |
a507baad DD |
1558 | |
1559 | If @option{--disable-libgcj-bc} is specified, libgcj is built without | |
a26c7632 DD |
1560 | these options. This allows the compile-time linker to resolve |
1561 | dependencies when statically linking to libgcj. However it makes it | |
1562 | impossible to override the affected portions of libgcj at run-time. | |
a507baad | 1563 | |
c1c3bb0c ME |
1564 | @item --with-ecos |
1565 | Enable runtime eCos target support. | |
1566 | ||
1567 | @item --without-libffi | |
8a36672b | 1568 | Don't use @samp{libffi}. This will disable the interpreter and JNI |
c1c3bb0c ME |
1569 | support as well, as these require @samp{libffi} to work. |
1570 | ||
1571 | @item --enable-libgcj-debug | |
1572 | Enable runtime debugging code. | |
1573 | ||
1574 | @item --enable-libgcj-multifile | |
1575 | If specified, causes all @file{.java} source files to be | |
1576 | compiled into @file{.class} files in one invocation of | |
8a36672b JM |
1577 | @samp{gcj}. This can speed up build time, but is more |
1578 | resource-intensive. If this option is unspecified or | |
c1c3bb0c ME |
1579 | disabled, @samp{gcj} is invoked once for each @file{.java} |
1580 | file to compile into a @file{.class} file. | |
1581 | ||
1582 | @item --with-libiconv-prefix=DIR | |
1583 | Search for libiconv in @file{DIR/include} and @file{DIR/lib}. | |
1584 | ||
1585 | @item --enable-sjlj-exceptions | |
4f6c2131 EB |
1586 | Force use of the @code{setjmp}/@code{longjmp}-based scheme for exceptions. |
1587 | @samp{configure} ordinarily picks the correct value based on the platform. | |
1588 | Only use this option if you are sure you need a different setting. | |
c1c3bb0c ME |
1589 | |
1590 | @item --with-system-zlib | |
1591 | Use installed @samp{zlib} rather than that included with GCC@. | |
1592 | ||
1593 | @item --with-win32-nlsapi=ansi, unicows or unicode | |
1594 | Indicates how MinGW @samp{libgcj} translates between UNICODE | |
8a36672b | 1595 | characters and the Win32 API@. |
c1c3bb0c ME |
1596 | @table @code |
1597 | @item ansi | |
1598 | Use the single-byte @code{char} and the Win32 A functions natively, | |
8a36672b | 1599 | translating to and from UNICODE when using these functions. If |
c1c3bb0c ME |
1600 | unspecified, this is the default. |
1601 | ||
1602 | @item unicows | |
8a36672b | 1603 | Use the @code{WCHAR} and Win32 W functions natively. Adds |
c1c3bb0c ME |
1604 | @code{-lunicows} to @file{libgcj.spec} to link with @samp{libunicows}. |
1605 | @file{unicows.dll} needs to be deployed on Microsoft Windows 9X machines | |
8a36672b | 1606 | running built executables. @file{libunicows.a}, an open-source |
c1c3bb0c ME |
1607 | import library around Microsoft's @code{unicows.dll}, is obtained from |
1608 | @uref{http://libunicows.sourceforge.net/}, which also gives details | |
1609 | on getting @file{unicows.dll} from Microsoft. | |
1610 | ||
1611 | @item unicode | |
8a36672b JM |
1612 | Use the @code{WCHAR} and Win32 W functions natively. Does @emph{not} |
1613 | add @code{-lunicows} to @file{libgcj.spec}. The built executables will | |
c1c3bb0c ME |
1614 | only run on Microsoft Windows NT and above. |
1615 | @end table | |
1616 | @end table | |
1617 | ||
1618 | @subsubheading AWT-Specific Options | |
1619 | ||
1620 | @table @code | |
1621 | @item --with-x | |
1622 | Use the X Window System. | |
1623 | ||
1624 | @item --enable-java-awt=PEER(S) | |
1625 | Specifies the AWT peer library or libraries to build alongside | |
8a36672b JM |
1626 | @samp{libgcj}. If this option is unspecified or disabled, AWT |
1627 | will be non-functional. Current valid values are @option{gtk} and | |
1628 | @option{xlib}. Multiple libraries should be separated by a | |
431ae0bf | 1629 | comma (i.e.@: @option{--enable-java-awt=gtk,xlib}). |
c1c3bb0c ME |
1630 | |
1631 | @item --enable-gtk-cairo | |
8a36672b | 1632 | Build the cairo Graphics2D implementation on GTK@. |
c1c3bb0c ME |
1633 | |
1634 | @item --enable-java-gc=TYPE | |
8a36672b | 1635 | Choose garbage collector. Defaults to @option{boehm} if unspecified. |
c1c3bb0c ME |
1636 | |
1637 | @item --disable-gtktest | |
1638 | Do not try to compile and run a test GTK+ program. | |
1639 | ||
1640 | @item --disable-glibtest | |
1641 | Do not try to compile and run a test GLIB program. | |
1642 | ||
1643 | @item --with-libart-prefix=PFX | |
1644 | Prefix where libart is installed (optional). | |
1645 | ||
1646 | @item --with-libart-exec-prefix=PFX | |
1647 | Exec prefix where libart is installed (optional). | |
1648 | ||
1649 | @item --disable-libarttest | |
1650 | Do not try to compile and run a test libart program. | |
1651 | ||
1652 | @end table | |
f42974dc DW |
1653 | |
1654 | @html | |
b8db17af | 1655 | <hr /> |
f42974dc DW |
1656 | <p> |
1657 | @end html | |
1658 | @ifhtml | |
1659 | @uref{./index.html,,Return to the GCC Installation page} | |
1660 | @end ifhtml | |
1661 | @end ifset | |
1662 | ||
1663 | @c ***Building**************************************************************** | |
6cfb3f16 | 1664 | @ifnothtml |
f42974dc DW |
1665 | @comment node-name, next, previous, up |
1666 | @node Building, Testing, Configuration, Installing GCC | |
6cfb3f16 | 1667 | @end ifnothtml |
f42974dc | 1668 | @ifset buildhtml |
f42974dc DW |
1669 | @ifnothtml |
1670 | @chapter Building | |
1671 | @end ifnothtml | |
1672 | @cindex Installing GCC: Building | |
1673 | ||
1674 | Now that GCC is configured, you are ready to build the compiler and | |
1675 | runtime libraries. | |
1676 | ||
b8df899a | 1677 | Some commands executed when making the compiler may fail (return a |
7ba4ca63 | 1678 | nonzero status) and be ignored by @command{make}. These failures, which |
b8df899a JM |
1679 | are often due to files that were not found, are expected, and can safely |
1680 | be ignored. | |
1681 | ||
1682 | It is normal to have compiler warnings when compiling certain files. | |
1683 | Unless you are a GCC developer, you can generally ignore these warnings | |
dd859b8a KG |
1684 | unless they cause compilation to fail. Developers should attempt to fix |
1685 | any warnings encountered, however they can temporarily continue past | |
1686 | warnings-as-errors by specifying the configure flag | |
1687 | @option{--disable-werror}. | |
b8df899a JM |
1688 | |
1689 | On certain old systems, defining certain environment variables such as | |
6cfb3f16 | 1690 | @env{CC} can interfere with the functioning of @command{make}. |
b8df899a JM |
1691 | |
1692 | If you encounter seemingly strange errors when trying to build the | |
1693 | compiler in a directory other than the source directory, it could be | |
1694 | because you have previously configured the compiler in the source | |
1695 | directory. Make sure you have done all the necessary preparations. | |
1696 | ||
1697 | If you build GCC on a BSD system using a directory stored in an old System | |
4c64396e | 1698 | V file system, problems may occur in running @command{fixincludes} if the |
b8df899a JM |
1699 | System V file system doesn't support symbolic links. These problems |
1700 | result in a failure to fix the declaration of @code{size_t} in | |
1701 | @file{sys/types.h}. If you find that @code{size_t} is a signed type and | |
1702 | that type mismatches occur, this could be the cause. | |
1703 | ||
161d7b59 | 1704 | The solution is not to use such a directory for building GCC@. |
f42974dc | 1705 | |
01d419ae | 1706 | Similarly, when building from SVN or snapshots, or if you modify |
e8645a40 TT |
1707 | @file{*.l} files, you need the Flex lexical analyzer generator |
1708 | installed. If you do not modify @file{*.l} files, releases contain | |
1709 | the Flex-generated files and you do not need Flex installed to build | |
1710 | them. There is still one Flex-based lexical analyzer (part of the | |
1711 | build machinery, not of GCC itself) that is used even if you only | |
1712 | build the C front end. | |
f85b8d1a | 1713 | |
80521187 | 1714 | When building from SVN or snapshots, or if you modify Texinfo |
1a598a97 | 1715 | documentation, you need version 4.4 or later of Texinfo installed if you |
f85b8d1a JM |
1716 | want Info documentation to be regenerated. Releases contain Info |
1717 | documentation pre-built for the unmodified documentation in the release. | |
1718 | ||
f42974dc DW |
1719 | @section Building a native compiler |
1720 | ||
f5c3bb4b PB |
1721 | For a native build, the default configuration is to perform |
1722 | a 3-stage bootstrap of the compiler when @samp{make} is invoked. | |
1723 | This will build the entire GCC system and ensure that it compiles | |
1724 | itself correctly. It can be disabled with the @option{--disable-bootstrap} | |
1725 | parameter to @samp{configure}, but bootstrapping is suggested because | |
1726 | the compiler will be tested more completely and could also have | |
1727 | better performance. | |
1728 | ||
1729 | The bootstrapping process will complete the following steps: | |
f42974dc DW |
1730 | |
1731 | @itemize @bullet | |
1732 | @item | |
80521187 | 1733 | Build tools necessary to build the compiler. |
f42974dc DW |
1734 | |
1735 | @item | |
cc11cc9b PB |
1736 | Perform a 3-stage bootstrap of the compiler. This includes building |
1737 | three times the target tools for use by the compiler such as binutils | |
1738 | (bfd, binutils, gas, gprof, ld, and opcodes) if they have been | |
1739 | individually linked or moved into the top level GCC source tree before | |
1740 | configuring. | |
f42974dc DW |
1741 | |
1742 | @item | |
1743 | Perform a comparison test of the stage2 and stage3 compilers. | |
1744 | ||
1745 | @item | |
1746 | Build runtime libraries using the stage3 compiler from the previous step. | |
f9047ed3 | 1747 | |
f42974dc DW |
1748 | @end itemize |
1749 | ||
38209993 | 1750 | If you are short on disk space you might consider @samp{make |
cc11cc9b PB |
1751 | bootstrap-lean} instead. The sequence of compilation is the |
1752 | same described above, but object files from the stage1 and | |
f42974dc DW |
1753 | stage2 of the 3-stage bootstrap of the compiler are deleted as |
1754 | soon as they are no longer needed. | |
1755 | ||
1c8bd6a3 PB |
1756 | If you wish to use non-default GCC flags when compiling the stage2 |
1757 | and stage3 compilers, set @code{BOOT_CFLAGS} on the command line when | |
1758 | doing @samp{make}. For example, if you want to save additional space | |
1759 | during the bootstrap and in the final installation as well, you can | |
1760 | build the compiler binaries without debugging information as in the | |
1761 | following example. This will save roughly 40% of disk space both for | |
1762 | the bootstrap and the final installation. (Libraries will still contain | |
1763 | debugging information.) | |
f42974dc | 1764 | |
3ab51846 | 1765 | @smallexample |
1c8bd6a3 | 1766 | make BOOT_CFLAGS='-O' bootstrap |
3ab51846 | 1767 | @end smallexample |
8c085f6f | 1768 | |
1c8bd6a3 PB |
1769 | You can place non-default optimization flags into @code{BOOT_CFLAGS}; they |
1770 | are less well tested here than the default of @samp{-g -O2}, but should | |
1771 | still work. In a few cases, you may find that you need to specify special | |
1772 | flags such as @option{-msoft-float} here to complete the bootstrap; or, | |
1773 | if the native compiler miscompiles the stage1 compiler, you may need | |
1774 | to work around this, by choosing @code{BOOT_CFLAGS} to avoid the parts | |
1775 | of the stage1 compiler that were miscompiled, or by using @samp{make | |
f85b8d1a JM |
1776 | bootstrap4} to increase the number of stages of bootstrap. |
1777 | ||
1c8bd6a3 PB |
1778 | @code{BOOT_CFLAGS} does not apply to bootstrapped target libraries. |
1779 | Since these are always compiled with the compiler currently being | |
1780 | bootstrapped, you can use @code{CFLAGS_FOR_TARGET} to modify their | |
1781 | compilation flags, as for non-bootstrapped target libraries. | |
1782 | Again, if the native compiler miscompiles the stage1 compiler, you may | |
1783 | need to work around this by avoiding non-working parts of the stage1 | |
1784 | compiler. Use @code{STAGE1_LIBCFLAGS} to this end. | |
c872077c | 1785 | |
6cfb3f16 | 1786 | If you used the flag @option{--enable-languages=@dots{}} to restrict |
f42974dc | 1787 | the compilers to be built, only those you've actually enabled will be |
767094dd | 1788 | built. This will of course only build those runtime libraries, for |
f42974dc | 1789 | which the particular compiler has been built. Please note, |
cc11cc9b | 1790 | that re-defining @env{LANGUAGES} when calling @samp{make} |
ef88b07d | 1791 | @strong{does not} work anymore! |
f42974dc | 1792 | |
f85b8d1a | 1793 | If the comparison of stage2 and stage3 fails, this normally indicates |
eea81d3e | 1794 | that the stage2 compiler has compiled GCC incorrectly, and is therefore |
f85b8d1a JM |
1795 | a potentially serious bug which you should investigate and report. (On |
1796 | a few systems, meaningful comparison of object files is impossible; they | |
1797 | always appear ``different''. If you encounter this problem, you will | |
1798 | need to disable comparison in the @file{Makefile}.) | |
f42974dc | 1799 | |
cc11cc9b PB |
1800 | If you do not want to bootstrap your compiler, you can configure with |
1801 | @option{--disable-bootstrap}. In particular cases, you may want to | |
1802 | bootstrap your compiler even if the target system is not the same as | |
1803 | the one you are building on: for example, you could build a | |
1804 | @code{powerpc-unknown-linux-gnu} toolchain on a | |
1805 | @code{powerpc64-unknown-linux-gnu} host. In this case, pass | |
1806 | @option{--enable-bootstrap} to the configure script. | |
1807 | ||
1808 | ||
f42974dc DW |
1809 | @section Building a cross compiler |
1810 | ||
f42974dc DW |
1811 | When building a cross compiler, it is not generally possible to do a |
1812 | 3-stage bootstrap of the compiler. This makes for an interesting problem | |
161d7b59 | 1813 | as parts of GCC can only be built with GCC@. |
f42974dc DW |
1814 | |
1815 | To build a cross compiler, we first recommend building and installing a | |
1816 | native compiler. You can then use the native GCC compiler to build the | |
635771af JM |
1817 | cross compiler. The installed native compiler needs to be GCC version |
1818 | 2.95 or later. | |
f42974dc | 1819 | |
c076e75f DD |
1820 | If the cross compiler is to be built with support for the Java |
1821 | programming language and the ability to compile .java source files is | |
1822 | desired, the installed native compiler used to build the cross | |
1823 | compiler needs to be the same GCC version as the cross compiler. In | |
1824 | addition the cross compiler needs to be configured with | |
1825 | @option{--with-ecj-jar=@dots{}}. | |
1826 | ||
f42974dc | 1827 | Assuming you have already installed a native copy of GCC and configured |
6cfb3f16 | 1828 | your cross compiler, issue the command @command{make}, which performs the |
f42974dc DW |
1829 | following steps: |
1830 | ||
1831 | @itemize @bullet | |
1832 | @item | |
80521187 | 1833 | Build host tools necessary to build the compiler. |
f42974dc DW |
1834 | |
1835 | @item | |
1836 | Build target tools for use by the compiler such as binutils (bfd, | |
1837 | binutils, gas, gprof, ld, and opcodes) | |
1838 | if they have been individually linked or moved into the top level GCC source | |
1839 | tree before configuring. | |
1840 | ||
1841 | @item | |
1842 | Build the compiler (single stage only). | |
1843 | ||
1844 | @item | |
1845 | Build runtime libraries using the compiler from the previous step. | |
1846 | @end itemize | |
1847 | ||
1848 | Note that if an error occurs in any step the make process will exit. | |
1849 | ||
01e97976 JM |
1850 | If you are not building GNU binutils in the same source tree as GCC, |
1851 | you will need a cross-assembler and cross-linker installed before | |
1852 | configuring GCC@. Put them in the directory | |
1853 | @file{@var{prefix}/@var{target}/bin}. Here is a table of the tools | |
1854 | you should put in this directory: | |
1855 | ||
1856 | @table @file | |
1857 | @item as | |
1858 | This should be the cross-assembler. | |
1859 | ||
1860 | @item ld | |
1861 | This should be the cross-linker. | |
1862 | ||
1863 | @item ar | |
1864 | This should be the cross-archiver: a program which can manipulate | |
1865 | archive files (linker libraries) in the target machine's format. | |
1866 | ||
1867 | @item ranlib | |
1868 | This should be a program to construct a symbol table in an archive file. | |
1869 | @end table | |
1870 | ||
1871 | The installation of GCC will find these programs in that directory, | |
1872 | and copy or link them to the proper place to for the cross-compiler to | |
1873 | find them when run later. | |
1874 | ||
1875 | The easiest way to provide these files is to build the Binutils package. | |
1876 | Configure it with the same @option{--host} and @option{--target} | |
1877 | options that you use for configuring GCC, then build and install | |
1878 | them. They install their executables automatically into the proper | |
1879 | directory. Alas, they do not support all the targets that GCC | |
1880 | supports. | |
1881 | ||
1882 | If you are not building a C library in the same source tree as GCC, | |
1883 | you should also provide the target libraries and headers before | |
1884 | configuring GCC, specifying the directories with | |
1885 | @option{--with-sysroot} or @option{--with-headers} and | |
1886 | @option{--with-libs}. Many targets also require ``start files'' such | |
1887 | as @file{crt0.o} and | |
1888 | @file{crtn.o} which are linked into each executable. There may be several | |
1889 | alternatives for @file{crt0.o}, for use with profiling or other | |
1890 | compilation options. Check your target's definition of | |
1891 | @code{STARTFILE_SPEC} to find out what start files it uses. | |
1892 | ||
f42974dc DW |
1893 | @section Building in parallel |
1894 | ||
d7f755c3 PB |
1895 | GNU Make 3.79 and above, which is necessary to build GCC, support |
1896 | building in parallel. To activate this, you can use @samp{make -j 2} | |
1897 | instead of @samp{make}. You can also specify a bigger number, and | |
cc11cc9b PB |
1898 | in most cases using a value greater than the number of processors in |
1899 | your machine will result in fewer and shorter I/O latency hits, thus | |
1900 | improving overall throughput; this is especially true for slow drives | |
1901 | and network filesystems. | |
f42974dc | 1902 | |
e23381df GB |
1903 | @section Building the Ada compiler |
1904 | ||
1905 | In order to build GNAT, the Ada compiler, you need a working GNAT | |
cc11cc9b PB |
1906 | compiler (GNAT version 3.14 or later, or GCC version 3.1 or later). |
1907 | This includes GNAT tools such as @command{gnatmake} and | |
1908 | @command{gnatlink}, since the Ada front end is written in Ada and | |
1909 | uses some GNAT-specific extensions. | |
1910 | ||
1911 | In order to build a cross compiler, it is suggested to install | |
1912 | the new compiler as native first, and then use it to build the cross | |
1913 | compiler. | |
e23381df | 1914 | |
38e23049 JM |
1915 | @command{configure} does not test whether the GNAT installation works |
1916 | and has a sufficiently recent version; if too old a GNAT version is | |
1917 | installed, the build will fail unless @option{--enable-languages} is | |
1918 | used to disable building the Ada front end. | |
e23381df | 1919 | |
e397a9f1 ST |
1920 | @env{ADA_INCLUDE_PATH} and @env{ADA_OBJECT_PATH} environment variables |
1921 | must not be set when building the Ada compiler, the Ada tools, or the | |
1922 | Ada runtime libraries. You can check that your build environment is clean | |
1923 | by verifying that @samp{gnatls -v} lists only one explicit path in each | |
1924 | section. | |
1925 | ||
8f231b5d JH |
1926 | @section Building with profile feedback |
1927 | ||
1928 | It is possible to use profile feedback to optimize the compiler itself. This | |
1929 | should result in a faster compiler binary. Experiments done on x86 using gcc | |
1930 | 3.3 showed approximately 7 percent speedup on compiling C programs. To | |
cc11cc9b | 1931 | bootstrap the compiler with profile feedback, use @code{make profiledbootstrap}. |
8f231b5d JH |
1932 | |
1933 | When @samp{make profiledbootstrap} is run, it will first build a @code{stage1} | |
1934 | compiler. This compiler is used to build a @code{stageprofile} compiler | |
1935 | instrumented to collect execution counts of instruction and branch | |
1936 | probabilities. Then runtime libraries are compiled with profile collected. | |
1937 | Finally a @code{stagefeedback} compiler is built using the information collected. | |
1938 | ||
cc11cc9b | 1939 | Unlike standard bootstrap, several additional restrictions apply. The |
8f231b5d JH |
1940 | compiler used to build @code{stage1} needs to support a 64-bit integral type. |
1941 | It is recommended to only use GCC for this. Also parallel make is currently | |
1942 | not supported since collisions in profile collecting may occur. | |
1943 | ||
f42974dc | 1944 | @html |
b8db17af | 1945 | <hr /> |
f42974dc DW |
1946 | <p> |
1947 | @end html | |
1948 | @ifhtml | |
1949 | @uref{./index.html,,Return to the GCC Installation page} | |
1950 | @end ifhtml | |
1951 | @end ifset | |
1952 | ||
1953 | @c ***Testing***************************************************************** | |
6cfb3f16 | 1954 | @ifnothtml |
f42974dc DW |
1955 | @comment node-name, next, previous, up |
1956 | @node Testing, Final install, Building, Installing GCC | |
6cfb3f16 | 1957 | @end ifnothtml |
f42974dc | 1958 | @ifset testhtml |
f42974dc DW |
1959 | @ifnothtml |
1960 | @chapter Installing GCC: Testing | |
1961 | @end ifnothtml | |
1962 | @cindex Testing | |
1963 | @cindex Installing GCC: Testing | |
1964 | @cindex Testsuite | |
1965 | ||
f97903cc JJ |
1966 | Before you install GCC, we encourage you to run the testsuites and to |
1967 | compare your results with results from a similar configuration that have | |
1968 | been submitted to the | |
1969 | @uref{http://gcc.gnu.org/ml/gcc-testresults/,,gcc-testresults mailing list}. | |
05253aed JJ |
1970 | Some of these archived results are linked from the build status lists |
1971 | at @uref{http://gcc.gnu.org/buildstat.html}, although not everyone who | |
1972 | reports a successful build runs the testsuites and submits the results. | |
f97903cc JJ |
1973 | This step is optional and may require you to download additional software, |
1974 | but it can give you confidence in your new GCC installation or point out | |
8a36672b | 1975 | problems before you install and start using your new GCC@. |
f42974dc | 1976 | |
f9047ed3 | 1977 | First, you must have @uref{download.html,,downloaded the testsuites}. |
f97903cc JJ |
1978 | These are part of the full distribution, but if you downloaded the |
1979 | ``core'' compiler plus any front ends, you must download the testsuites | |
1980 | separately. | |
f42974dc | 1981 | |
f97903cc | 1982 | Second, you must have the testing tools installed. This includes |
80521187 GP |
1983 | @uref{http://www.gnu.org/software/dejagnu/,,DejaGnu}, Tcl, and Expect; |
1984 | the DejaGnu site has links to these. | |
f42974dc | 1985 | |
8cacda7c GP |
1986 | If the directories where @command{runtest} and @command{expect} were |
1987 | installed are not in the @env{PATH}, you may need to set the following | |
1988 | environment variables appropriately, as in the following example (which | |
1989 | assumes that DejaGnu has been installed under @file{/usr/local}): | |
f42974dc | 1990 | |
3ab51846 | 1991 | @smallexample |
f42974dc DW |
1992 | TCL_LIBRARY = /usr/local/share/tcl8.0 |
1993 | DEJAGNULIBS = /usr/local/share/dejagnu | |
3ab51846 | 1994 | @end smallexample |
f42974dc | 1995 | |
8cacda7c | 1996 | (On systems such as Cygwin, these paths are required to be actual |
f42974dc | 1997 | paths, not mounts or links; presumably this is due to some lack of |
8cacda7c | 1998 | portability in the DejaGnu code.) |
ecb7d6b3 | 1999 | |
f42974dc DW |
2000 | |
2001 | Finally, you can run the testsuite (which may take a long time): | |
3ab51846 | 2002 | @smallexample |
ef88b07d | 2003 | cd @var{objdir}; make -k check |
3ab51846 | 2004 | @end smallexample |
f42974dc | 2005 | |
794aca5d WB |
2006 | This will test various components of GCC, such as compiler |
2007 | front ends and runtime libraries. While running the testsuite, DejaGnu | |
2008 | might emit some harmless messages resembling | |
daf2f129 | 2009 | @samp{WARNING: Couldn't find the global config file.} or |
794aca5d | 2010 | @samp{WARNING: Couldn't find tool init file} that can be ignored. |
06809951 | 2011 | |
82161911 DD |
2012 | If you are testing a cross-compiler, you may want to run the testsuite |
2013 | on a simulator as described at @uref{http://gcc.gnu.org/simtest-howto.html}. | |
2014 | ||
962e6e00 | 2015 | @section How can you run the testsuite on selected tests? |
f42974dc | 2016 | |
794aca5d WB |
2017 | In order to run sets of tests selectively, there are targets |
2018 | @samp{make check-gcc} and @samp{make check-g++} | |
2019 | in the @file{gcc} subdirectory of the object directory. You can also | |
2020 | just run @samp{make check} in a subdirectory of the object directory. | |
2021 | ||
2022 | ||
2023 | A more selective way to just run all @command{gcc} execute tests in the | |
2024 | testsuite is to use | |
f42974dc | 2025 | |
3ab51846 | 2026 | @smallexample |
6cfb3f16 | 2027 | make check-gcc RUNTESTFLAGS="execute.exp @var{other-options}" |
3ab51846 | 2028 | @end smallexample |
f42974dc | 2029 | |
794aca5d WB |
2030 | Likewise, in order to run only the @command{g++} ``old-deja'' tests in |
2031 | the testsuite with filenames matching @samp{9805*}, you would use | |
f42974dc | 2032 | |
3ab51846 | 2033 | @smallexample |
6cfb3f16 | 2034 | make check-g++ RUNTESTFLAGS="old-deja.exp=9805* @var{other-options}" |
3ab51846 | 2035 | @end smallexample |
f42974dc | 2036 | |
6cfb3f16 JM |
2037 | The @file{*.exp} files are located in the testsuite directories of the GCC |
2038 | source, the most important ones being @file{compile.exp}, | |
2039 | @file{execute.exp}, @file{dg.exp} and @file{old-deja.exp}. | |
2040 | To get a list of the possible @file{*.exp} files, pipe the | |
38209993 | 2041 | output of @samp{make check} into a file and look at the |
6cfb3f16 | 2042 | @samp{Running @dots{} .exp} lines. |
f42974dc | 2043 | |
e08737dc PE |
2044 | @section Passing options and running multiple testsuites |
2045 | ||
2046 | You can pass multiple options to the testsuite using the | |
2047 | @samp{--target_board} option of DejaGNU, either passed as part of | |
2048 | @samp{RUNTESTFLAGS}, or directly to @command{runtest} if you prefer to | |
2049 | work outside the makefiles. For example, | |
2050 | ||
3ab51846 | 2051 | @smallexample |
311c6da4 | 2052 | make check-g++ RUNTESTFLAGS="--target_board=unix/-O3/-fmerge-constants" |
3ab51846 | 2053 | @end smallexample |
e08737dc PE |
2054 | |
2055 | will run the standard @command{g++} testsuites (``unix'' is the target name | |
2056 | for a standard native testsuite situation), passing | |
311c6da4 | 2057 | @samp{-O3 -fmerge-constants} to the compiler on every test, i.e., |
e08737dc PE |
2058 | slashes separate options. |
2059 | ||
2060 | You can run the testsuites multiple times using combinations of options | |
2061 | with a syntax similar to the brace expansion of popular shells: | |
2062 | ||
3ab51846 | 2063 | @smallexample |
4c754988 | 2064 | @dots{}"--target_board=arm-sim\@{-mhard-float,-msoft-float\@}\@{-O1,-O2,-O3,\@}" |
3ab51846 | 2065 | @end smallexample |
e08737dc PE |
2066 | |
2067 | (Note the empty option caused by the trailing comma in the final group.) | |
2068 | The following will run each testsuite eight times using the @samp{arm-sim} | |
2069 | target, as if you had specified all possible combinations yourself: | |
2070 | ||
3ab51846 | 2071 | @smallexample |
e08737dc PE |
2072 | --target_board=arm-sim/-mhard-float/-O1 |
2073 | --target_board=arm-sim/-mhard-float/-O2 | |
2074 | --target_board=arm-sim/-mhard-float/-O3 | |
2075 | --target_board=arm-sim/-mhard-float | |
2076 | --target_board=arm-sim/-msoft-float/-O1 | |
2077 | --target_board=arm-sim/-msoft-float/-O2 | |
2078 | --target_board=arm-sim/-msoft-float/-O3 | |
2079 | --target_board=arm-sim/-msoft-float | |
3ab51846 | 2080 | @end smallexample |
e08737dc PE |
2081 | |
2082 | They can be combined as many times as you wish, in arbitrary ways. This | |
2083 | list: | |
2084 | ||
3ab51846 | 2085 | @smallexample |
4c754988 | 2086 | @dots{}"--target_board=unix/-Wextra\@{-O3,-fno-strength\@}\@{-fomit-frame,\@}" |
3ab51846 | 2087 | @end smallexample |
e08737dc PE |
2088 | |
2089 | will generate four combinations, all involving @samp{-Wextra}. | |
2090 | ||
2091 | The disadvantage to this method is that the testsuites are run in serial, | |
2092 | which is a waste on multiprocessor systems. For users with GNU Make and | |
2093 | a shell which performs brace expansion, you can run the testsuites in | |
2094 | parallel by having the shell perform the combinations and @command{make} | |
2095 | do the parallel runs. Instead of using @samp{--target_board}, use a | |
2096 | special makefile target: | |
2097 | ||
3ab51846 | 2098 | @smallexample |
e08737dc | 2099 | make -j@var{N} check-@var{testsuite}//@var{test-target}/@var{option1}/@var{option2}/@dots{} |
3ab51846 | 2100 | @end smallexample |
e08737dc PE |
2101 | |
2102 | For example, | |
2103 | ||
3ab51846 | 2104 | @smallexample |
e08737dc | 2105 | make -j3 check-gcc//sh-hms-sim/@{-m1,-m2,-m3,-m3e,-m4@}/@{,-nofpu@} |
3ab51846 | 2106 | @end smallexample |
e08737dc PE |
2107 | |
2108 | will run three concurrent ``make-gcc'' testsuites, eventually testing all | |
2109 | ten combinations as described above. Note that this is currently only | |
2110 | supported in the @file{gcc} subdirectory. (To see how this works, try | |
2111 | typing @command{echo} before the example given here.) | |
2112 | ||
2113 | ||
2114 | @section Additional testing for Java Class Libraries | |
2115 | ||
688d8b84 RM |
2116 | The Java runtime tests can be executed via @samp{make check} |
2117 | in the @file{@var{target}/libjava/testsuite} directory in | |
2118 | the build tree. | |
f702e700 | 2119 | |
4eb3e795 | 2120 | The @uref{http://sourceware.org/mauve/,,Mauve Project} provides |
f702e700 JJ |
2121 | a suite of tests for the Java Class Libraries. This suite can be run |
2122 | as part of libgcj testing by placing the Mauve tree within the libjava | |
2123 | testsuite at @file{libjava/testsuite/libjava.mauve/mauve}, or by | |
2124 | specifying the location of that tree when invoking @samp{make}, as in | |
2125 | @samp{make MAUVEDIR=~/mauve check}. | |
2126 | ||
f42974dc DW |
2127 | @section How to interpret test results |
2128 | ||
794aca5d | 2129 | The result of running the testsuite are various @file{*.sum} and @file{*.log} |
767094dd | 2130 | files in the testsuite subdirectories. The @file{*.log} files contain a |
f42974dc | 2131 | detailed log of the compiler invocations and the corresponding |
daf2f129 JM |
2132 | results, the @file{*.sum} files summarize the results. These summaries |
2133 | contain status codes for all tests: | |
f42974dc DW |
2134 | |
2135 | @itemize @bullet | |
2136 | @item | |
2137 | PASS: the test passed as expected | |
2138 | @item | |
2139 | XPASS: the test unexpectedly passed | |
2140 | @item | |
2141 | FAIL: the test unexpectedly failed | |
2142 | @item | |
2143 | XFAIL: the test failed as expected | |
2144 | @item | |
2145 | UNSUPPORTED: the test is not supported on this platform | |
2146 | @item | |
2147 | ERROR: the testsuite detected an error | |
2148 | @item | |
2149 | WARNING: the testsuite detected a possible problem | |
2150 | @end itemize | |
2151 | ||
38209993 | 2152 | It is normal for some tests to report unexpected failures. At the |
962e6e00 JM |
2153 | current time the testing harness does not allow fine grained control |
2154 | over whether or not a test is expected to fail. This problem should | |
2155 | be fixed in future releases. | |
f42974dc DW |
2156 | |
2157 | ||
2158 | @section Submitting test results | |
2159 | ||
2160 | If you want to report the results to the GCC project, use the | |
767094dd | 2161 | @file{contrib/test_summary} shell script. Start it in the @var{objdir} with |
f42974dc | 2162 | |
3ab51846 | 2163 | @smallexample |
6cfb3f16 JM |
2164 | @var{srcdir}/contrib/test_summary -p your_commentary.txt \ |
2165 | -m gcc-testresults@@gcc.gnu.org |sh | |
3ab51846 | 2166 | @end smallexample |
f42974dc | 2167 | |
6cfb3f16 | 2168 | This script uses the @command{Mail} program to send the results, so |
767094dd | 2169 | make sure it is in your @env{PATH}. The file @file{your_commentary.txt} is |
f42974dc | 2170 | prepended to the testsuite summary and should contain any special |
767094dd | 2171 | remarks you have on your results or your build environment. Please |
f42974dc | 2172 | do not edit the testsuite result block or the subject line, as these |
05c425a9 | 2173 | messages may be automatically processed. |
f42974dc | 2174 | |
aed5964b | 2175 | @html |
b8db17af | 2176 | <hr /> |
aed5964b JM |
2177 | <p> |
2178 | @end html | |
2179 | @ifhtml | |
2180 | @uref{./index.html,,Return to the GCC Installation page} | |
2181 | @end ifhtml | |
f42974dc DW |
2182 | @end ifset |
2183 | ||
2184 | @c ***Final install*********************************************************** | |
6cfb3f16 | 2185 | @ifnothtml |
f42974dc DW |
2186 | @comment node-name, next, previous, up |
2187 | @node Final install, , Testing, Installing GCC | |
6cfb3f16 | 2188 | @end ifnothtml |
f42974dc | 2189 | @ifset finalinstallhtml |
f42974dc DW |
2190 | @ifnothtml |
2191 | @chapter Installing GCC: Final installation | |
2192 | @end ifnothtml | |
2193 | ||
eea81d3e | 2194 | Now that GCC has been built (and optionally tested), you can install it with |
3ab51846 | 2195 | @smallexample |
eea81d3e | 2196 | cd @var{objdir}; make install |
3ab51846 | 2197 | @end smallexample |
f42974dc | 2198 | |
06809951 | 2199 | We strongly recommend to install into a target directory where there is |
4b322f43 JB |
2200 | no previous version of GCC present. Also, the GNAT runtime should not |
2201 | be stripped, as this would break certain features of the debugger that | |
2202 | depend on this debugging information (catching Ada exceptions for | |
2203 | instance). | |
06809951 | 2204 | |
f42974dc | 2205 | That step completes the installation of GCC; user level binaries can |
8e5f33ff GK |
2206 | be found in @file{@var{prefix}/bin} where @var{prefix} is the value |
2207 | you specified with the @option{--prefix} to configure (or | |
2208 | @file{/usr/local} by default). (If you specified @option{--bindir}, | |
2209 | that directory will be used instead; otherwise, if you specified | |
2210 | @option{--exec-prefix}, @file{@var{exec-prefix}/bin} will be used.) | |
2211 | Headers for the C++ and Java libraries are installed in | |
2212 | @file{@var{prefix}/include}; libraries in @file{@var{libdir}} | |
2213 | (normally @file{@var{prefix}/lib}); internal parts of the compiler in | |
2214 | @file{@var{libdir}/gcc} and @file{@var{libexecdir}/gcc}; documentation | |
2215 | in info format in @file{@var{infodir}} (normally | |
2216 | @file{@var{prefix}/info}). | |
f42974dc | 2217 | |
53b50ac1 CC |
2218 | When installing cross-compilers, GCC's executables |
2219 | are not only installed into @file{@var{bindir}}, that | |
2220 | is, @file{@var{exec-prefix}/bin}, but additionally into | |
2221 | @file{@var{exec-prefix}/@var{target-alias}/bin}, if that directory | |
2222 | exists. Typically, such @dfn{tooldirs} hold target-specific | |
2223 | binutils, including assembler and linker. | |
2224 | ||
2225 | Installation into a temporary staging area or into a @command{chroot} | |
2226 | jail can be achieved with the command | |
2227 | ||
3ab51846 | 2228 | @smallexample |
53b50ac1 | 2229 | make DESTDIR=@var{path-to-rootdir} install |
3ab51846 | 2230 | @end smallexample |
53b50ac1 CC |
2231 | |
2232 | @noindent where @var{path-to-rootdir} is the absolute path of | |
2233 | a directory relative to which all installation paths will be | |
2234 | interpreted. Note that the directory specified by @code{DESTDIR} | |
2235 | need not exist yet; it will be created if necessary. | |
2236 | ||
2237 | There is a subtle point with tooldirs and @code{DESTDIR}: | |
2238 | If you relocate a cross-compiler installation with | |
2239 | e.g.@: @samp{DESTDIR=@var{rootdir}}, then the directory | |
2240 | @file{@var{rootdir}/@var{exec-prefix}/@var{target-alias}/bin} will | |
2241 | be filled with duplicated GCC executables only if it already exists, | |
2242 | it will not be created otherwise. This is regarded as a feature, | |
2243 | not as a bug, because it gives slightly more control to the packagers | |
2244 | using the @code{DESTDIR} feature. | |
2245 | ||
cc11cc9b | 2246 | If you are bootstrapping a released version of GCC then please |
f97a5bda JJ |
2247 | quickly review the build status page for your release, available from |
2248 | @uref{http://gcc.gnu.org/buildstat.html}. | |
c5997381 JJ |
2249 | If your system is not listed for the version of GCC that you built, |
2250 | send a note to | |
eea81d3e | 2251 | @email{gcc@@gcc.gnu.org} indicating |
8a36672b | 2252 | that you successfully built and installed GCC@. |
c5997381 | 2253 | Include the following information: |
f42974dc | 2254 | |
c5997381 JJ |
2255 | @itemize @bullet |
2256 | @item | |
962e6e00 | 2257 | Output from running @file{@var{srcdir}/config.guess}. Do not send |
c5997381 JJ |
2258 | that file itself, just the one-line output from running it. |
2259 | ||
2260 | @item | |
2dd76960 | 2261 | The output of @samp{gcc -v} for your newly installed @command{gcc}. |
c5997381 JJ |
2262 | This tells us which version of GCC you built and the options you passed to |
2263 | configure. | |
2264 | ||
2b46bc67 JJ |
2265 | @item |
2266 | Whether you enabled all languages or a subset of them. If you used a | |
2267 | full distribution then this information is part of the configure | |
2268 | options in the output of @samp{gcc -v}, but if you downloaded the | |
2269 | ``core'' compiler plus additional front ends then it isn't apparent | |
2270 | which ones you built unless you tell us about it. | |
2271 | ||
c5997381 JJ |
2272 | @item |
2273 | If the build was for GNU/Linux, also include: | |
2274 | @itemize @bullet | |
2275 | @item | |
2276 | The distribution name and version (e.g., Red Hat 7.1 or Debian 2.2.3); | |
2277 | this information should be available from @file{/etc/issue}. | |
2278 | ||
2279 | @item | |
2280 | The version of the Linux kernel, available from @samp{uname --version} | |
2281 | or @samp{uname -a}. | |
2282 | ||
2283 | @item | |
2284 | The version of glibc you used; for RPM-based systems like Red Hat, | |
b9da07da JJ |
2285 | Mandrake, and SuSE type @samp{rpm -q glibc} to get the glibc version, |
2286 | and on systems like Debian and Progeny use @samp{dpkg -l libc6}. | |
c5997381 JJ |
2287 | @end itemize |
2288 | For other systems, you can include similar information if you think it is | |
2289 | relevant. | |
2290 | ||
2291 | @item | |
2292 | Any other information that you think would be useful to people building | |
2293 | GCC on the same configuration. The new entry in the build status list | |
2294 | will include a link to the archived copy of your message. | |
2295 | @end itemize | |
c009f01f JJ |
2296 | |
2297 | We'd also like to know if the | |
2298 | @ifnothtml | |
2299 | @ref{Specific, host/target specific installation notes} | |
2300 | @end ifnothtml | |
2301 | @ifhtml | |
2302 | @uref{specific.html,,host/target specific installation notes} | |
2303 | @end ifhtml | |
2304 | didn't include your host/target information or if that information is | |
2305 | incomplete or out of date. Send a note to | |
962e6e00 | 2306 | @email{gcc@@gcc.gnu.org} detailing how the information should be changed. |
f42974dc | 2307 | |
962e6e00 | 2308 | If you find a bug, please report it following the |
f42974dc DW |
2309 | @uref{../bugs.html,,bug reporting guidelines}. |
2310 | ||
ab130aa5 | 2311 | If you want to print the GCC manuals, do @samp{cd @var{objdir}; make |
1a598a97 | 2312 | dvi}. You will need to have @command{texi2dvi} (version at least 4.4) |
ab130aa5 JM |
2313 | and @TeX{} installed. This creates a number of @file{.dvi} files in |
2314 | subdirectories of @file{@var{objdir}}; these may be converted for | |
cc5c2741 BM |
2315 | printing with programs such as @command{dvips}. Alternately, by using |
2316 | @samp{make pdf} in place of @samp{make dvi}, you can create documentation | |
2317 | in the form of @file{.pdf} files; this requires @command{texi2pdf}, which | |
2318 | is included with Texinfo version 4.8 and later. You can also | |
ab130aa5 JM |
2319 | @uref{http://www.gnu.org/order/order.html,,buy printed manuals from the |
2320 | Free Software Foundation}, though such manuals may not be for the most | |
161d7b59 | 2321 | recent version of GCC@. |
ab130aa5 | 2322 | |
9d65c5cb | 2323 | If you would like to generate online HTML documentation, do @samp{cd |
f995c51f JW |
2324 | @var{objdir}; make html} and HTML will be generated for the gcc manuals in |
2325 | @file{@var{objdir}/gcc/HTML}. | |
9d65c5cb | 2326 | |
f42974dc | 2327 | @html |
b8db17af | 2328 | <hr /> |
f42974dc DW |
2329 | <p> |
2330 | @end html | |
2331 | @ifhtml | |
2332 | @uref{./index.html,,Return to the GCC Installation page} | |
2333 | @end ifhtml | |
2334 | @end ifset | |
2335 | ||
2336 | @c ***Binaries**************************************************************** | |
6cfb3f16 | 2337 | @ifnothtml |
f42974dc DW |
2338 | @comment node-name, next, previous, up |
2339 | @node Binaries, Specific, Installing GCC, Top | |
6cfb3f16 | 2340 | @end ifnothtml |
f42974dc | 2341 | @ifset binarieshtml |
f42974dc DW |
2342 | @ifnothtml |
2343 | @chapter Installing GCC: Binaries | |
2344 | @end ifnothtml | |
2345 | @cindex Binaries | |
2346 | @cindex Installing GCC: Binaries | |
2347 | ||
161d7b59 | 2348 | We are often asked about pre-compiled versions of GCC@. While we cannot |
f42974dc DW |
2349 | provide these for all platforms, below you'll find links to binaries for |
2350 | various platforms where creating them by yourself is not easy due to various | |
2351 | reasons. | |
2352 | ||
2353 | Please note that we did not create these binaries, nor do we | |
2354 | support them. If you have any problems installing them, please | |
2355 | contact their makers. | |
2356 | ||
2357 | @itemize | |
2358 | @item | |
df002c7d DE |
2359 | AIX: |
2360 | @itemize | |
2361 | @item | |
ff4c5e7b | 2362 | @uref{http://www.bullfreeware.com,,Bull's Freeware and Shareware Archive for AIX}; |
df002c7d DE |
2363 | |
2364 | @item | |
75dd1ae2 DE |
2365 | @uref{http://pware.hvcc.edu,,Hudson Valley Community College Open Source Softeware for IBM System p}; |
2366 | ||
2367 | @item | |
2368 | @uref{http://www.perzl.org/aix,,AIX 5L and 6 Open Source Packages}. | |
df002c7d | 2369 | @end itemize |
f42974dc DW |
2370 | |
2371 | @item | |
8d5362b7 GP |
2372 | DOS---@uref{http://www.delorie.com/djgpp/,,DJGPP}. |
2373 | ||
2374 | @item | |
71c6b994 KH |
2375 | Renesas H8/300[HS]---@uref{http://h8300-hms.sourceforge.net/,,GNU |
2376 | Development Tools for the Renesas H8/300[HS] Series}. | |
f42974dc | 2377 | |
f404402c MW |
2378 | @item |
2379 | HP-UX: | |
2380 | @itemize | |
f42974dc | 2381 | @item |
1d7887ca | 2382 | @uref{http://hpux.cs.utah.edu/,,HP-UX Porting Center}; |
f42974dc | 2383 | |
f404402c MW |
2384 | @item |
2385 | @uref{ftp://sunsite.informatik.rwth-aachen.de/pub/packages/gcc_hpux/,,Binaries for HP-UX 11.00 at Aachen University of Technology}. | |
2386 | @end itemize | |
2387 | ||
3e35d143 SC |
2388 | @item |
2389 | Motorola 68HC11/68HC12---@uref{http://www.gnu-m68hc11.org,,GNU | |
2390 | Development Tools for the Motorola 68HC11/68HC12}. | |
2391 | ||
f42974dc | 2392 | @item |
38209993 | 2393 | @uref{http://www.sco.com/skunkware/devtools/index.html#gcc,,SCO |
8d5362b7 | 2394 | OpenServer/Unixware}. |
f42974dc | 2395 | |
8d5362b7 GP |
2396 | @item |
2397 | Solaris 2 (SPARC, Intel)---@uref{http://www.sunfreeware.com/,,Sunfreeware}. | |
f42974dc DW |
2398 | |
2399 | @item | |
8d5362b7 | 2400 | SGI---@uref{http://freeware.sgi.com/,,SGI Freeware}. |
f42974dc DW |
2401 | |
2402 | @item | |
05c425a9 | 2403 | Microsoft Windows: |
f42974dc DW |
2404 | @itemize |
2405 | @item | |
4eb3e795 | 2406 | The @uref{http://sourceware.org/cygwin/,,Cygwin} project; |
f42974dc | 2407 | @item |
cc92b8ab | 2408 | The @uref{http://www.mingw.org/,,MinGW} project. |
f42974dc DW |
2409 | @end itemize |
2410 | ||
2411 | @item | |
616de62f GP |
2412 | @uref{ftp://ftp.thewrittenword.com/packages/by-name/,,The |
2413 | Written Word} offers binaries for | |
75dd1ae2 | 2414 | AIX 4.3.3, 5.1 and 5.2, |
616de62f | 2415 | IRIX 6.5, |
75dd1ae2 | 2416 | Tru64 UNIX 4.0D and 5.1, |
616de62f GP |
2417 | GNU/Linux (i386), |
2418 | HP-UX 10.20, 11.00, and 11.11, and | |
75dd1ae2 | 2419 | Solaris/SPARC 2.5.1, 2.6, 7, 8, 9 and 10. |
6512c54a GP |
2420 | |
2421 | @item | |
2422 | @uref{http://www.openpkg.org/,,OpenPKG} offers binaries for quite a | |
2423 | number of platforms. | |
eae50c87 PB |
2424 | |
2425 | @item | |
2426 | The @uref{http://gcc.gnu.org/wiki/GFortranBinaries,,GFortran Wiki} has | |
92922512 | 2427 | links to GNU Fortran binaries for several platforms. |
f42974dc DW |
2428 | @end itemize |
2429 | ||
2430 | In addition to those specific offerings, you can get a binary | |
2431 | distribution CD-ROM from the | |
1d7887ca | 2432 | @uref{http://www.gnu.org/order/order.html,,Free Software Foundation}. |
f42974dc | 2433 | It contains binaries for a number of platforms, and |
767094dd | 2434 | includes not only GCC, but other stuff as well. The current CD does |
f42974dc | 2435 | not contain the latest version of GCC, but it should allow |
767094dd | 2436 | bootstrapping the compiler. An updated version of that disk is in the |
f42974dc DW |
2437 | works. |
2438 | ||
2439 | @html | |
b8db17af | 2440 | <hr /> |
f42974dc DW |
2441 | <p> |
2442 | @end html | |
2443 | @ifhtml | |
2444 | @uref{./index.html,,Return to the GCC Installation page} | |
2445 | @end ifhtml | |
2446 | @end ifset | |
2447 | ||
2448 | @c ***Specific**************************************************************** | |
6cfb3f16 | 2449 | @ifnothtml |
f42974dc | 2450 | @comment node-name, next, previous, up |
73e2155a | 2451 | @node Specific, Old, Binaries, Top |
6cfb3f16 | 2452 | @end ifnothtml |
f42974dc | 2453 | @ifset specifichtml |
f42974dc DW |
2454 | @ifnothtml |
2455 | @chapter Host/target specific installation notes for GCC | |
2456 | @end ifnothtml | |
2457 | @cindex Specific | |
2458 | @cindex Specific installation notes | |
2459 | @cindex Target specific installation | |
2460 | @cindex Host specific installation | |
2461 | @cindex Target specific installation notes | |
2462 | ||
2463 | Please read this document carefully @emph{before} installing the | |
2464 | GNU Compiler Collection on your machine. | |
2465 | ||
c9936427 DD |
2466 | Note that this list of install notes is @emph{not} a list of supported |
2467 | hosts or targets. Not all supported hosts and targets are listed | |
2468 | here, only the ones that require host-specific or target-specific | |
2469 | information are. | |
2470 | ||
ef88b07d | 2471 | @ifhtml |
f42974dc DW |
2472 | @itemize |
2473 | @item | |
5a4c9b10 | 2474 | @uref{#alpha-x-x,,alpha*-*-*} |
f42974dc | 2475 | @item |
5a4c9b10 | 2476 | @uref{#alpha-dec-osf,,alpha*-dec-osf*} |
f42974dc | 2477 | @item |
5a4c9b10 | 2478 | @uref{#arc-x-elf,,arc-*-elf} |
b8df899a | 2479 | @item |
5a4c9b10 GP |
2480 | @uref{#arm-x-elf,,arm-*-elf} |
2481 | @uref{#arm-x-coff,,arm-*-coff} | |
2482 | @uref{#arm-x-aout,,arm-*-aout} | |
b8df899a | 2483 | @item |
f42974dc DW |
2484 | @uref{#avr,,avr} |
2485 | @item | |
0d4a78eb BS |
2486 | @uref{#bfin,,Blackfin} |
2487 | @item | |
f42974dc DW |
2488 | @uref{#dos,,DOS} |
2489 | @item | |
5a4c9b10 | 2490 | @uref{#x-x-freebsd,,*-*-freebsd*} |
021c4bfd | 2491 | @item |
f42974dc DW |
2492 | @uref{#h8300-hms,,h8300-hms} |
2493 | @item | |
5a4c9b10 | 2494 | @uref{#hppa-hp-hpux,,hppa*-hp-hpux*} |
f42974dc | 2495 | @item |
5a4c9b10 | 2496 | @uref{#hppa-hp-hpux10,,hppa*-hp-hpux10} |
f42974dc | 2497 | @item |
5a4c9b10 | 2498 | @uref{#hppa-hp-hpux11,,hppa*-hp-hpux11} |
f42974dc | 2499 | @item |
5a4c9b10 | 2500 | @uref{#x-x-linux-gnu,,*-*-linux-gnu} |
f42974dc | 2501 | @item |
5a4c9b10 | 2502 | @uref{#ix86-x-linux,,i?86-*-linux*} |
f42974dc | 2503 | @item |
d8fcd085 | 2504 | @uref{#ix86-x-solaris210,,i?86-*-solaris2.10} |
8f47c084 | 2505 | @item |
5a4c9b10 | 2506 | @uref{#ia64-x-linux,,ia64-*-linux} |
b8df899a | 2507 | @item |
5a4c9b10 | 2508 | @uref{#ia64-x-hpux,,ia64-*-hpux*} |
b499d9ab | 2509 | @item |
5a4c9b10 | 2510 | @uref{#x-ibm-aix,,*-ibm-aix*} |
959a73a4 | 2511 | @item |
5a4c9b10 | 2512 | @uref{#iq2000-x-elf,,iq2000-*-elf} |
e3223ea2 | 2513 | @item |
38b2d076 DD |
2514 | @uref{#m32c-x-elf,,m32c-*-elf} |
2515 | @item | |
5a4c9b10 | 2516 | @uref{#m32r-x-elf,,m32r-*-elf} |
b8df899a | 2517 | @item |
b8df899a JM |
2518 | @uref{#m6811-elf,,m6811-elf} |
2519 | @item | |
2520 | @uref{#m6812-elf,,m6812-elf} | |
2521 | @item | |
183dc04b RS |
2522 | @uref{#m68k-x-x,,m68k-*-*} |
2523 | @item | |
4529dbf1 RS |
2524 | @uref{#m68k-uclinux,,m68k-uclinux} |
2525 | @item | |
5a4c9b10 | 2526 | @uref{#mips-x-x,,mips-*-*} |
b8df899a | 2527 | @item |
b953cc4b | 2528 | @uref{#mips-sgi-irix5,,mips-sgi-irix5} |
f42974dc | 2529 | @item |
b953cc4b | 2530 | @uref{#mips-sgi-irix6,,mips-sgi-irix6} |
f42974dc | 2531 | @item |
cd985f66 | 2532 | @uref{#powerpc-x-x,,powerpc*-*-*} |
4f2b1139 | 2533 | @item |
5a4c9b10 | 2534 | @uref{#powerpc-x-darwin,,powerpc-*-darwin*} |
b8df899a | 2535 | @item |
cd985f66 | 2536 | @uref{#powerpc-x-elf,,powerpc-*-elf} |
f42974dc | 2537 | @item |
5a4c9b10 | 2538 | @uref{#powerpc-x-linux-gnu,,powerpc*-*-linux-gnu*} |
edf1b3f3 | 2539 | @item |
5a4c9b10 | 2540 | @uref{#powerpc-x-netbsd,,powerpc-*-netbsd*} |
b8df899a | 2541 | @item |
5a4c9b10 | 2542 | @uref{#powerpc-x-eabisim,,powerpc-*-eabisim} |
b8df899a | 2543 | @item |
5a4c9b10 | 2544 | @uref{#powerpc-x-eabi,,powerpc-*-eabi} |
b8df899a | 2545 | @item |
cd985f66 | 2546 | @uref{#powerpcle-x-elf,,powerpcle-*-elf} |
b8df899a | 2547 | @item |
5a4c9b10 | 2548 | @uref{#powerpcle-x-eabisim,,powerpcle-*-eabisim} |
b8df899a | 2549 | @item |
5a4c9b10 | 2550 | @uref{#powerpcle-x-eabi,,powerpcle-*-eabi} |
b8df899a | 2551 | @item |
5a4c9b10 | 2552 | @uref{#s390-x-linux,,s390-*-linux*} |
91abf72d | 2553 | @item |
5a4c9b10 | 2554 | @uref{#s390x-x-linux,,s390x-*-linux*} |
91abf72d | 2555 | @item |
5a4c9b10 | 2556 | @uref{#s390x-ibm-tpf,,s390x-ibm-tpf*} |
8bf06993 | 2557 | @item |
5a4c9b10 | 2558 | @uref{#x-x-solaris2,,*-*-solaris2*} |
f42974dc | 2559 | @item |
5a4c9b10 | 2560 | @uref{#sparc-sun-solaris2,,sparc-sun-solaris2*} |
f42974dc | 2561 | @item |
d8fcd085 | 2562 | @uref{#sparc-sun-solaris27,,sparc-sun-solaris2.7} |
f42974dc | 2563 | @item |
5a4c9b10 | 2564 | @uref{#sparc-x-linux,,sparc-*-linux*} |
c6fa9728 | 2565 | @item |
5a4c9b10 | 2566 | @uref{#sparc64-x-solaris2,,sparc64-*-solaris2*} |
f42974dc | 2567 | @item |
5a4c9b10 | 2568 | @uref{#sparcv9-x-solaris2,,sparcv9-*-solaris2*} |
e403b4bc | 2569 | @item |
5a4c9b10 | 2570 | @uref{#x-x-vxworks,,*-*-vxworks*} |
4977bab6 | 2571 | @item |
d8fcd085 | 2572 | @uref{#x86-64-x-x,,x86_64-*-*, amd64-*-*} |
7e081a0c | 2573 | @item |
5a4c9b10 | 2574 | @uref{#xtensa-x-elf,,xtensa-*-elf} |
fd29f6ea | 2575 | @item |
5a4c9b10 | 2576 | @uref{#xtensa-x-linux,,xtensa-*-linux*} |
fd29f6ea | 2577 | @item |
f42974dc DW |
2578 | @uref{#windows,,Microsoft Windows} |
2579 | @item | |
2580 | @uref{#os2,,OS/2} | |
2581 | @item | |
2582 | @uref{#older,,Older systems} | |
2583 | @end itemize | |
2584 | ||
2585 | @itemize | |
2586 | @item | |
d8fcd085 | 2587 | @uref{#elf,,all ELF targets} (SVR4, Solaris 2, etc.) |
f42974dc | 2588 | @end itemize |
ef88b07d | 2589 | @end ifhtml |
f42974dc DW |
2590 | |
2591 | ||
2592 | @html | |
2593 | <!-- -------- host/target specific issues start here ---------------- --> | |
b8db17af | 2594 | <hr /> |
f42974dc | 2595 | @end html |
5a4c9b10 | 2596 | @heading @anchor{alpha-x-x}alpha*-*-* |
333e14b0 LR |
2597 | |
2598 | This section contains general configuration information for all | |
2599 | alpha-based platforms using ELF (in particular, ignore this section for | |
161d7b59 | 2600 | DEC OSF/1, Digital UNIX and Tru64 UNIX)@. In addition to reading this |
f2541106 | 2601 | section, please read all other sections that match your target. |
333e14b0 | 2602 | |
021c4bfd RO |
2603 | We require binutils 2.11.2 or newer. |
2604 | Previous binutils releases had a number of problems with DWARF 2 | |
333e14b0 LR |
2605 | debugging information, not the least of which is incorrect linking of |
2606 | shared libraries. | |
2607 | ||
b8df899a | 2608 | @html |
b8db17af | 2609 | <hr /> |
b8df899a | 2610 | @end html |
5a4c9b10 | 2611 | @heading @anchor{alpha-dec-osf}alpha*-dec-osf* |
b8df899a | 2612 | Systems using processors that implement the DEC Alpha architecture and |
f2541106 RO |
2613 | are running the DEC/Compaq Unix (DEC OSF/1, Digital UNIX, or Compaq |
2614 | Tru64 UNIX) operating system, for example the DEC Alpha AXP systems. | |
2615 | ||
c7bdf0a6 ZW |
2616 | As of GCC 3.2, versions before @code{alpha*-dec-osf4} are no longer |
2617 | supported. (These are the versions which identify themselves as DEC | |
2618 | OSF/1.) | |
9340544b | 2619 | |
6e92b3a1 RB |
2620 | In Digital Unix V4.0, virtual memory exhausted bootstrap failures |
2621 | may be fixed by configuring with @option{--with-gc=simple}, | |
2622 | reconfiguring Kernel Virtual Memory and Swap parameters | |
2623 | per the @command{/usr/sbin/sys_check} Tuning Suggestions, | |
2624 | or applying the patch in | |
2625 | @uref{http://gcc.gnu.org/ml/gcc/2002-08/msg00822.html}. | |
2626 | ||
f2541106 RO |
2627 | In Tru64 UNIX V5.1, Compaq introduced a new assembler that does not |
2628 | currently (2001-06-13) work with @command{mips-tfile}. As a workaround, | |
2629 | we need to use the old assembler, invoked via the barely documented | |
2630 | @option{-oldas} option. To bootstrap GCC, you either need to use the | |
2631 | Compaq C Compiler: | |
2632 | ||
3ab51846 | 2633 | @smallexample |
eea81d3e | 2634 | % CC=cc @var{srcdir}/configure [@var{options}] [@var{target}] |
3ab51846 | 2635 | @end smallexample |
f2541106 RO |
2636 | |
2637 | or you can use a copy of GCC 2.95.3 or higher built on Tru64 UNIX V4.0: | |
2638 | ||
3ab51846 | 2639 | @smallexample |
eea81d3e | 2640 | % CC=gcc -Wa,-oldas @var{srcdir}/configure [@var{options}] [@var{target}] |
3ab51846 | 2641 | @end smallexample |
b8df899a | 2642 | |
b953cc4b RO |
2643 | As of GNU binutils 2.11.2, neither GNU @command{as} nor GNU @command{ld} |
2644 | are supported on Tru64 UNIX, so you must not configure GCC with | |
2645 | @option{--with-gnu-as} or @option{--with-gnu-ld}. | |
2646 | ||
f0523f02 | 2647 | GCC writes a @samp{.verstamp} directive to the assembler output file |
b8df899a JM |
2648 | unless it is built as a cross-compiler. It gets the version to use from |
2649 | the system header file @file{/usr/include/stamp.h}. If you install a | |
2650 | new version of DEC Unix, you should rebuild GCC to pick up the new version | |
2651 | stamp. | |
2652 | ||
2653 | Note that since the Alpha is a 64-bit architecture, cross-compilers from | |
2654 | 32-bit machines will not generate code as efficient as that generated | |
2655 | when the compiler is running on a 64-bit machine because many | |
2656 | optimizations that depend on being able to represent a word on the | |
2657 | target in an integral value on the host cannot be performed. Building | |
2658 | cross-compilers on the Alpha for 32-bit machines has only been tested in | |
2659 | a few cases and may not work properly. | |
2660 | ||
7ba4ca63 | 2661 | @samp{make compare} may fail on old versions of DEC Unix unless you add |
1c8bd6a3 PB |
2662 | @option{-save-temps} to @code{BOOT_CFLAGS}. On these systems, the name |
2663 | of the assembler input file is stored in the object file, and that makes | |
b8df899a | 2664 | comparison fail if it differs between the @code{stage1} and |
6cfb3f16 | 2665 | @code{stage2} compilations. The option @option{-save-temps} forces a |
b8df899a | 2666 | fixed name to be used for the assembler input file, instead of a |
6cfb3f16 | 2667 | randomly chosen name in @file{/tmp}. Do not add @option{-save-temps} |
b8df899a | 2668 | unless the comparisons fail without that option. If you add |
6cfb3f16 | 2669 | @option{-save-temps}, you will have to manually delete the @samp{.i} and |
b8df899a JM |
2670 | @samp{.s} files after each series of compilations. |
2671 | ||
f0523f02 | 2672 | GCC now supports both the native (ECOFF) debugging format used by DBX |
161d7b59 | 2673 | and GDB and an encapsulated STABS format for use only with GDB@. See the |
6cfb3f16 | 2674 | discussion of the @option{--with-stabs} option of @file{configure} above |
b8df899a JM |
2675 | for more information on these formats and how to select them. |
2676 | ||
2677 | There is a bug in DEC's assembler that produces incorrect line numbers | |
2678 | for ECOFF format when the @samp{.align} directive is used. To work | |
f0523f02 | 2679 | around this problem, GCC will not emit such alignment directives |
b8df899a JM |
2680 | while writing ECOFF format debugging information even if optimization is |
2681 | being performed. Unfortunately, this has the very undesirable | |
6cfb3f16 JM |
2682 | side-effect that code addresses when @option{-O} is specified are |
2683 | different depending on whether or not @option{-g} is also specified. | |
b8df899a | 2684 | |
6cfb3f16 | 2685 | To avoid this behavior, specify @option{-gstabs+} and use GDB instead of |
161d7b59 | 2686 | DBX@. DEC is now aware of this problem with the assembler and hopes to |
b8df899a JM |
2687 | provide a fix shortly. |
2688 | ||
b8df899a | 2689 | @html |
b8db17af | 2690 | <hr /> |
b8df899a | 2691 | @end html |
5a4c9b10 | 2692 | @heading @anchor{arc-x-elf}arc-*-elf |
b8df899a JM |
2693 | Argonaut ARC processor. |
2694 | This configuration is intended for embedded systems. | |
2695 | ||
2696 | @html | |
b8db17af | 2697 | <hr /> |
b8df899a | 2698 | @end html |
5a4c9b10 | 2699 | @heading @anchor{arm-x-elf}arm-*-elf |
34e8290f NC |
2700 | ARM-family processors. Subtargets that use the ELF object format |
2701 | require GNU binutils 2.13 or newer. Such subtargets include: | |
cd985f66 JM |
2702 | @code{arm-*-freebsd}, @code{arm-*-netbsdelf}, @code{arm-*-*linux} |
2703 | and @code{arm-*-rtems}. | |
34e8290f NC |
2704 | |
2705 | @html | |
2706 | <hr /> | |
2707 | @end html | |
5a4c9b10 | 2708 | @heading @anchor{arm-x-coff}arm-*-coff |
61aeb06f | 2709 | ARM-family processors. Note that there are two different varieties |
34e8290f NC |
2710 | of PE format subtarget supported: @code{arm-wince-pe} and |
2711 | @code{arm-pe} as well as a standard COFF target @code{arm-*-coff}. | |
2712 | ||
34e8290f NC |
2713 | @html |
2714 | <hr /> | |
2715 | @end html | |
5a4c9b10 | 2716 | @heading @anchor{arm-x-aout}arm-*-aout |
34e8290f NC |
2717 | ARM-family processors. These targets support the AOUT file format: |
2718 | @code{arm-*-aout}, @code{arm-*-netbsd}. | |
476c334e | 2719 | |
f42974dc | 2720 | @html |
b8db17af | 2721 | <hr /> |
f42974dc | 2722 | @end html |
ef88b07d | 2723 | @heading @anchor{avr}avr |
f42974dc | 2724 | |
b8df899a | 2725 | ATMEL AVR-family micro controllers. These are used in embedded |
ca52d046 GP |
2726 | applications. There are no standard Unix configurations. |
2727 | @ifnothtml | |
7f970b70 | 2728 | @xref{AVR Options,, AVR Options, gcc, Using the GNU Compiler |
ca52d046 GP |
2729 | Collection (GCC)}, |
2730 | @end ifnothtml | |
98999d8b | 2731 | @ifhtml |
ca52d046 | 2732 | See ``AVR Options'' in the main manual |
98999d8b | 2733 | @end ifhtml |
ca52d046 | 2734 | for the list of supported MCU types. |
b8df899a | 2735 | |
161d7b59 | 2736 | Use @samp{configure --target=avr --enable-languages="c"} to configure GCC@. |
f42974dc DW |
2737 | |
2738 | Further installation notes and other useful information about AVR tools | |
2739 | can also be obtained from: | |
2740 | ||
2741 | @itemize @bullet | |
2742 | @item | |
1d7887ca | 2743 | @uref{http://www.nongnu.org/avr/,,http://www.nongnu.org/avr/} |
de7999ba | 2744 | @item |
d1a86812 | 2745 | @uref{http://home.overta.ru/users/denisc/,,http://home.overta.ru/users/denisc/} |
f42974dc | 2746 | @item |
d1a86812 | 2747 | @uref{http://www.amelek.gda.pl/avr/,,http://www.amelek.gda.pl/avr/} |
f42974dc DW |
2748 | @end itemize |
2749 | ||
de7999ba | 2750 | We @emph{strongly} recommend using binutils 2.13 or newer. |
f42974dc DW |
2751 | |
2752 | The following error: | |
3ab51846 | 2753 | @smallexample |
f42974dc | 2754 | Error: register required |
3ab51846 | 2755 | @end smallexample |
f42974dc DW |
2756 | |
2757 | indicates that you should upgrade to a newer version of the binutils. | |
2758 | ||
0d4a78eb BS |
2759 | @html |
2760 | <hr /> | |
2761 | @end html | |
2762 | @heading @anchor{bfin}Blackfin | |
2763 | ||
2764 | The Blackfin processor, an Analog Devices DSP. | |
2765 | @ifnothtml | |
7f970b70 AM |
2766 | @xref{Blackfin Options,, Blackfin Options, gcc, Using the GNU Compiler |
2767 | Collection (GCC)}, | |
0d4a78eb BS |
2768 | @end ifnothtml |
2769 | @ifhtml | |
2770 | See ``Blackfin Options'' in the main manual | |
2771 | @end ifhtml | |
2772 | ||
2773 | More information, and a version of binutils with support for this processor, | |
2774 | is available at @uref{http://blackfin.uclinux.org} | |
2775 | ||
0b85d816 | 2776 | @html |
b8db17af | 2777 | <hr /> |
0b85d816 HPN |
2778 | @end html |
2779 | @heading @anchor{cris}CRIS | |
2780 | ||
2781 | CRIS is the CPU architecture in Axis Communications ETRAX system-on-a-chip | |
2782 | series. These are used in embedded applications. | |
2783 | ||
2784 | @ifnothtml | |
7f970b70 | 2785 | @xref{CRIS Options,, CRIS Options, gcc, Using the GNU Compiler |
0b85d816 HPN |
2786 | Collection (GCC)}, |
2787 | @end ifnothtml | |
2788 | @ifhtml | |
2789 | See ``CRIS Options'' in the main manual | |
2790 | @end ifhtml | |
2791 | for a list of CRIS-specific options. | |
2792 | ||
2793 | There are a few different CRIS targets: | |
2794 | @table @code | |
0b85d816 HPN |
2795 | @item cris-axis-elf |
2796 | Mainly for monolithic embedded systems. Includes a multilib for the | |
2797 | @samp{v10} core used in @samp{ETRAX 100 LX}. | |
2798 | @item cris-axis-linux-gnu | |
2799 | A GNU/Linux port for the CRIS architecture, currently targeting | |
2800 | @samp{ETRAX 100 LX} by default. | |
2801 | @end table | |
2802 | ||
cd985f66 | 2803 | For @code{cris-axis-elf} you need binutils 2.11 |
0b85d816 HPN |
2804 | or newer. For @code{cris-axis-linux-gnu} you need binutils 2.12 or newer. |
2805 | ||
2806 | Pre-packaged tools can be obtained from | |
2807 | @uref{ftp://ftp.axis.com/pub/axis/tools/cris/compiler-kit/}. More | |
2808 | information about this platform is available at | |
2809 | @uref{http://developer.axis.com/}. | |
2810 | ||
53054e77 PW |
2811 | @html |
2812 | <hr /> | |
2813 | @end html | |
2814 | @heading @anchor{crx}CRX | |
2815 | ||
2816 | The CRX CompactRISC architecture is a low-power 32-bit architecture with | |
2817 | fast context switching and architectural extensibility features. | |
2818 | ||
2819 | @ifnothtml | |
2820 | @xref{CRX Options,, CRX Options, gcc, Using and Porting the GNU Compiler | |
2821 | Collection (GCC)}, | |
2822 | @end ifnothtml | |
2823 | ||
2824 | @ifhtml | |
2825 | See ``CRX Options'' in the main manual for a list of CRX-specific options. | |
2826 | @end ifhtml | |
2827 | ||
2828 | Use @samp{configure --target=crx-elf --enable-languages=c,c++} to configure | |
2829 | GCC@ for building a CRX cross-compiler. The option @samp{--target=crx-elf} | |
2830 | is also used to build the @samp{newlib} C library for CRX. | |
2831 | ||
2832 | It is also possible to build libstdc++-v3 for the CRX architecture. This | |
a4d05547 | 2833 | needs to be done in a separate step with the following configure settings: |
53054e77 PW |
2834 | @samp{gcc/libstdc++-v3/configure --host=crx-elf --with-newlib |
2835 | --enable-sjlj-exceptions --enable-cxx-flags='-fexceptions -frtti'} | |
2836 | ||
f42974dc | 2837 | @html |
b8db17af | 2838 | <hr /> |
f42974dc | 2839 | @end html |
ef88b07d | 2840 | @heading @anchor{dos}DOS |
f42974dc | 2841 | |
962e6e00 | 2842 | Please have a look at the @uref{binaries.html,,binaries page}. |
f42974dc | 2843 | |
f0523f02 | 2844 | You cannot install GCC by itself on MSDOS; it will not compile under |
f85b8d1a JM |
2845 | any MSDOS compiler except itself. You need to get the complete |
2846 | compilation package DJGPP, which includes binaries as well as sources, | |
2847 | and includes all the necessary compilation tools and libraries. | |
2848 | ||
021c4bfd | 2849 | @html |
b8db17af | 2850 | <hr /> |
021c4bfd | 2851 | @end html |
5a4c9b10 | 2852 | @heading @anchor{x-x-freebsd}*-*-freebsd* |
021c4bfd | 2853 | |
f08dc6c1 | 2854 | The version of binutils installed in @file{/usr/bin} probably works with |
8a36672b | 2855 | this release of GCC@. However, on FreeBSD 4, bootstrapping against the |
f08dc6c1 LR |
2856 | latest FSF binutils is known to improve overall testsuite results; and, |
2857 | on FreeBSD/alpha, using binutils 2.14 or later is required to build libjava. | |
021c4bfd | 2858 | |
6a1dbbaf | 2859 | Support for FreeBSD 1 was discontinued in GCC 3.2. |
c7bdf0a6 | 2860 | |
f08dc6c1 LR |
2861 | Support for FreeBSD 2 will be discontinued after GCC 3.4. The |
2862 | following was true for GCC 3.1 but the current status is unknown. | |
c7bdf0a6 | 2863 | For FreeBSD 2 or any mutant a.out versions of FreeBSD 3: All |
021c4bfd RO |
2864 | configuration support and files as shipped with GCC 2.95 are still in |
2865 | place. FreeBSD 2.2.7 has been known to bootstrap completely; however, | |
2866 | it is unknown which version of binutils was used (it is assumed that it | |
2867 | was the system copy in @file{/usr/bin}) and C++ EH failures were noted. | |
2868 | ||
2869 | For FreeBSD using the ELF file format: DWARF 2 debugging is now the | |
2870 | default for all CPU architectures. It had been the default on | |
2871 | FreeBSD/alpha since its inception. You may use @option{-gstabs} instead | |
2872 | of @option{-g}, if you really want the old debugging format. There are | |
2873 | no known issues with mixing object files and libraries with different | |
2874 | debugging formats. Otherwise, this release of GCC should now match more | |
8a36672b | 2875 | of the configuration used in the stock FreeBSD configuration of GCC@. In |
021c4bfd RO |
2876 | particular, @option{--enable-threads} is now configured by default. |
2877 | However, as a general user, do not attempt to replace the system | |
2878 | compiler with this release. Known to bootstrap and check with good | |
f08dc6c1 | 2879 | results on FreeBSD 4.9-STABLE and 5-CURRENT@. In the past, known to |
e4e7d312 | 2880 | bootstrap and check with good results on FreeBSD 3.0, 3.4, 4.0, 4.2, |
f08dc6c1 | 2881 | 4.3, 4.4, 4.5, 4.8-STABLE@. |
46fc709d LR |
2882 | |
2883 | In principle, @option{--enable-threads} is now compatible with | |
2884 | @option{--enable-libgcj} on FreeBSD@. However, it has only been built | |
e4e7d312 | 2885 | and tested on @samp{i386-*-freebsd[45]} and @samp{alpha-*-freebsd[45]}. |
8c085f6f | 2886 | The static |
6b976d99 LR |
2887 | library may be incorrectly built (symbols are missing at link time). |
2888 | There is a rare timing-based startup hang (probably involves an | |
c0478a66 | 2889 | assumption about the thread library). Multi-threaded boehm-gc (required for |
46fc709d | 2890 | libjava) exposes severe threaded signal-handling bugs on FreeBSD before |
e4e7d312 | 2891 | 4.5-RELEASE@. Other CPU architectures |
46fc709d LR |
2892 | supported by FreeBSD will require additional configuration tuning in, at |
2893 | the very least, both boehm-gc and libffi. | |
021c4bfd | 2894 | |
bc3a44db LR |
2895 | Shared @file{libgcc_s.so} is now built and installed by default. |
2896 | ||
f42974dc | 2897 | @html |
b8db17af | 2898 | <hr /> |
f42974dc | 2899 | @end html |
ef88b07d | 2900 | @heading @anchor{h8300-hms}h8300-hms |
71c6b994 | 2901 | Renesas H8/300 series of processors. |
f42974dc | 2902 | |
962e6e00 | 2903 | Please have a look at the @uref{binaries.html,,binaries page}. |
f42974dc | 2904 | |
b8df899a JM |
2905 | The calling convention and structure layout has changed in release 2.6. |
2906 | All code must be recompiled. The calling convention now passes the | |
2907 | first three arguments in function calls in registers. Structures are no | |
2908 | longer a multiple of 2 bytes. | |
2909 | ||
f42974dc | 2910 | @html |
b8db17af | 2911 | <hr /> |
f42974dc | 2912 | @end html |
5a4c9b10 | 2913 | @heading @anchor{hppa-hp-hpux}hppa*-hp-hpux* |
6a1dbbaf | 2914 | Support for HP-UX version 9 and older was discontinued in GCC 3.4. |
f42974dc | 2915 | |
dbad5e72 SE |
2916 | We require using gas/binutils on all hppa platforms; |
2917 | you may encounter a variety of problems if you try to use the HP assembler. | |
f42974dc DW |
2918 | |
2919 | Specifically, @option{-g} does not work on HP-UX (since that system | |
d711cf67 | 2920 | uses a peculiar debugging format which GCC does not know about), unless |
8a36672b | 2921 | you use GAS and GDB@. It may be helpful to configure GCC with the |
38209993 | 2922 | @uref{./configure.html#with-gnu-as,,@option{--with-gnu-as}} and |
8a36672b | 2923 | @option{--with-as=@dots{}} options to ensure that GCC can find GAS@. |
f42974dc | 2924 | |
08b3d104 | 2925 | If you wish to use the pa-risc 2.0 architecture support with a 32-bit |
dbad5e72 | 2926 | runtime, you must use gas/binutils 2.11 or newer. |
f42974dc | 2927 | |
d5355cb2 JDA |
2928 | There are two default scheduling models for instructions. These are |
2929 | PROCESSOR_7100LC and PROCESSOR_8000. They are selected from the pa-risc | |
2930 | architecture specified for the target machine when configuring. | |
2931 | PROCESSOR_8000 is the default. PROCESSOR_7100LC is selected when | |
2932 | the target is a @samp{hppa1*} machine. | |
806bf413 JDA |
2933 | |
2934 | The PROCESSOR_8000 model is not well suited to older processors. Thus, | |
2935 | it is important to completely specify the machine architecture when | |
2936 | configuring if you want a model other than PROCESSOR_8000. The macro | |
2937 | TARGET_SCHED_DEFAULT can be defined in BOOT_CFLAGS if a different | |
2938 | default scheduling model is desired. | |
2939 | ||
25f710ba | 2940 | As of GCC 4.0, GCC uses the UNIX 95 namespace for HP-UX 10.10 |
d711cf67 JDA |
2941 | through 11.00, and the UNIX 98 namespace for HP-UX 11.11 and later. |
2942 | This namespace change might cause problems when bootstrapping with | |
2943 | an earlier version of GCC or the HP compiler as essentially the same | |
2944 | namespace is required for an entire build. This problem can be avoided | |
2945 | in a number of ways. With HP cc, @env{UNIX_STD} can be set to @samp{95} | |
2946 | or @samp{98}. Another way is to add an appropriate set of predefines | |
2947 | to @env{CC}. The description for the @option{munix=} option contains | |
2948 | a list of the predefines used with each standard. | |
2949 | ||
0ee2ea09 | 2950 | As of GCC 4.1, @env{DWARF2} exception handling is available on HP-UX@. |
dcf966bd JDA |
2951 | It is now the default. This exposed a bug in the handling of data |
2952 | relocations in the GAS assembler. The handling of 64-bit data relocations | |
2953 | was seriously broken, affecting debugging and exception support on all | |
353f74e8 | 2954 | @samp{hppa64-*-*} targets. Under some circumstances, 32-bit data relocations |
dcf966bd JDA |
2955 | could also be handled incorrectly. This problem is fixed in GAS version |
2956 | 2.16.91 20051125. | |
2957 | ||
2958 | GCC versions prior to 4.1 incorrectly passed and returned complex | |
2959 | values. They are now passed in the same manner as aggregates. | |
2960 | ||
021c4bfd | 2961 | More specific information to @samp{hppa*-hp-hpux*} targets follows. |
f42974dc | 2962 | |
f42974dc | 2963 | @html |
b8db17af | 2964 | <hr /> |
f42974dc | 2965 | @end html |
5a4c9b10 | 2966 | @heading @anchor{hppa-hp-hpux10}hppa*-hp-hpux10 |
f42974dc | 2967 | |
f9047ed3 | 2968 | For hpux10.20, we @emph{highly} recommend you pick up the latest sed patch |
161d7b59 | 2969 | @code{PHCO_19798} from HP@. HP has two sites which provide patches free of |
f42974dc DW |
2970 | charge: |
2971 | ||
2972 | @itemize @bullet | |
2973 | @item | |
2974 | @html | |
f401d0f5 | 2975 | <a href="http://us.itrc.hp.com/service/home/home.do">US, Canada, Asia-Pacific, and |
f42974dc DW |
2976 | Latin-America</a> |
2977 | @end html | |
2978 | @ifnothtml | |
f401d0f5 JDA |
2979 | @uref{http://us.itrc.hp.com/service/home/home.do,,} US, Canada, Asia-Pacific, |
2980 | and Latin-America. | |
f42974dc DW |
2981 | @end ifnothtml |
2982 | @item | |
f401d0f5 | 2983 | @uref{http://europe.itrc.hp.com/service/home/home.do,,} Europe. |
f42974dc DW |
2984 | @end itemize |
2985 | ||
2aea0b53 ZW |
2986 | The HP assembler on these systems has some problems. Most notably the |
2987 | assembler inserts timestamps into each object file it creates, causing | |
cc11cc9b PB |
2988 | the 3-stage comparison test to fail during a bootstrap. |
2989 | You should be able to continue by saying @samp{make all-host all-target} | |
2990 | after getting the failure from @samp{make}. | |
f42974dc | 2991 | |
25f710ba | 2992 | GCC 4.0 requires CVS binutils as of April 28, 2004 or later. Earlier |
9a55eab3 JDA |
2993 | versions require binutils 2.8 or later. |
2994 | ||
25f710ba | 2995 | The C++ ABI has changed incompatibly in GCC 4.0. COMDAT subspaces are |
9a55eab3 JDA |
2996 | used for one-only code and data. This resolves many of the previous |
2997 | problems in using C++ on this target. However, the ABI is not compatible | |
2998 | with the one implemented under HP-UX 11 using secondary definitions. | |
f42974dc DW |
2999 | |
3000 | @html | |
b8db17af | 3001 | <hr /> |
f42974dc | 3002 | @end html |
5a4c9b10 | 3003 | @heading @anchor{hppa-hp-hpux11}hppa*-hp-hpux11 |
f42974dc | 3004 | |
c5124497 JDA |
3005 | GCC 3.0 and up support HP-UX 11. GCC 2.95.x is not supported and cannot |
3006 | be used to compile GCC 3.0 and up. | |
f269f54f | 3007 | |
c5124497 | 3008 | Refer to @uref{binaries.html,,binaries} for information about obtaining |
8a36672b JM |
3009 | precompiled GCC binaries for HP-UX@. Precompiled binaries must be obtained |
3010 | to build the Ada language as it can't be bootstrapped using C@. Ada is | |
c5124497 JDA |
3011 | only available for the 32-bit PA-RISC runtime. The libffi and libjava |
3012 | haven't been ported to HP-UX and don't build. | |
f401d0f5 | 3013 | |
02809848 PB |
3014 | Starting with GCC 3.4 an ISO C compiler is required to bootstrap. The |
3015 | bundled compiler supports only traditional C; you will need either HP's | |
3016 | unbundled compiler, or a binary distribution of GCC@. | |
3017 | ||
c5124497 JDA |
3018 | It is possible to build GCC 3.3 starting with the bundled HP compiler, |
3019 | but the process requires several steps. GCC 3.3 can then be used to | |
3020 | build later versions. The fastjar program contains ISO C code and | |
3021 | can't be built with the HP bundled compiler. This problem can be | |
3022 | avoided by not building the Java language. For example, use the | |
3023 | @option{--enable-languages="c,c++,f77,objc"} option in your configure | |
3024 | command. | |
08b3d104 | 3025 | |
c5124497 JDA |
3026 | There are several possible approaches to building the distribution. |
3027 | Binutils can be built first using the HP tools. Then, the GCC | |
3028 | distribution can be built. The second approach is to build GCC | |
8a36672b | 3029 | first using the HP tools, then build binutils, then rebuild GCC@. |
c5124497 JDA |
3030 | There have been problems with various binary distributions, so it |
3031 | is best not to start from a binary distribution. | |
3032 | ||
3033 | On 64-bit capable systems, there are two distinct targets. Different | |
3034 | installation prefixes must be used if both are to be installed on | |
3035 | the same system. The @samp{hppa[1-2]*-hp-hpux11*} target generates code | |
3036 | for the 32-bit PA-RISC runtime architecture and uses the HP linker. | |
3037 | The @samp{hppa64-hp-hpux11*} target generates 64-bit code for the | |
3038 | PA-RISC 2.0 architecture. The HP and GNU linkers are both supported | |
3039 | for this target. | |
3040 | ||
3041 | The script config.guess now selects the target type based on the compiler | |
3042 | detected during configuration. You must define @env{PATH} or @env{CC} so | |
3043 | that configure finds an appropriate compiler for the initial bootstrap. | |
3044 | When @env{CC} is used, the definition should contain the options that are | |
3045 | needed whenever @env{CC} is used. | |
3046 | ||
3047 | Specifically, options that determine the runtime architecture must be | |
3048 | in @env{CC} to correctly select the target for the build. It is also | |
f0eb93a8 | 3049 | convenient to place many other compiler options in @env{CC}. For example, |
c5124497 JDA |
3050 | @env{CC="cc -Ac +DA2.0W -Wp,-H16376 -D_CLASSIC_TYPES -D_HPUX_SOURCE"} |
3051 | can be used to bootstrap the GCC 3.3 branch with the HP compiler in | |
3052 | 64-bit K&R/bundled mode. The @option{+DA2.0W} option will result in | |
3053 | the automatic selection of the @samp{hppa64-hp-hpux11*} target. The | |
3054 | macro definition table of cpp needs to be increased for a successful | |
3055 | build with the HP compiler. _CLASSIC_TYPES and _HPUX_SOURCE need to | |
3056 | be defined when building with the bundled compiler, or when using the | |
3057 | @option{-Ac} option. These defines aren't necessary with @option{-Ae}. | |
8c085f6f | 3058 | |
c5124497 JDA |
3059 | It is best to explicitly configure the @samp{hppa64-hp-hpux11*} target |
3060 | with the @option{--with-ld=@dots{}} option. This overrides the standard | |
3061 | search for ld. The two linkers supported on this target require different | |
3062 | commands. The default linker is determined during configuration. As a | |
3063 | result, it's not possible to switch linkers in the middle of a GCC build. | |
3064 | This has been been reported to sometimes occur in unified builds of | |
8a36672b | 3065 | binutils and GCC@. |
c5124497 | 3066 | |
9a55eab3 | 3067 | GCC 3.0 through 3.2 require binutils 2.11 or above. GCC 3.3 through |
25f710ba | 3068 | GCC 4.0 require binutils 2.14 or later. |
c5124497 JDA |
3069 | |
3070 | Although the HP assembler can be used for an initial build, it shouldn't | |
3071 | be used with any languages other than C and perhaps Fortran due to its | |
3072 | many limitations. For example, it does not support weak symbols or alias | |
3073 | definitions. As a result, explicit template instantiations are required | |
3074 | when using C++. This makes it difficult if not impossible to build many | |
3075 | C++ applications. You can't generate debugging information when using | |
cc11cc9b | 3076 | the HP assembler. Finally, bootstrapping fails in the final |
c5124497 JDA |
3077 | comparison of object modules due to the time stamps that it inserts into |
3078 | the modules. The bootstrap can be continued from this point with | |
cc11cc9b | 3079 | @samp{make all-host all-target}. |
c5124497 JDA |
3080 | |
3081 | A recent linker patch must be installed for the correct operation of | |
3082 | GCC 3.3 and later. @code{PHSS_26559} and @code{PHSS_24304} are the | |
3083 | oldest linker patches that are known to work. They are for HP-UX | |
3084 | 11.00 and 11.11, respectively. @code{PHSS_24303}, the companion to | |
3085 | @code{PHSS_24304}, might be usable but it hasn't been tested. These | |
3086 | patches have been superseded. Consult the HP patch database to obtain | |
3087 | the currently recommended linker patch for your system. | |
3088 | ||
3089 | The patches are necessary for the support of weak symbols on the | |
3090 | 32-bit port, and for the running of initializers and finalizers. Weak | |
3091 | symbols are implemented using SOM secondary definition symbols. Prior | |
3092 | to HP-UX 11, there are bugs in the linker support for secondary symbols. | |
3093 | The patches correct a problem of linker core dumps creating shared | |
3094 | libraries containing secondary symbols, as well as various other | |
3095 | linking issues involving secondary symbols. | |
3096 | ||
3097 | GCC 3.3 uses the ELF DT_INIT_ARRAY and DT_FINI_ARRAY capabilities to | |
3098 | run initializers and finalizers on the 64-bit port. The 32-bit port | |
3099 | uses the linker @option{+init} and @option{+fini} options for the same | |
3100 | purpose. The patches correct various problems with the +init/+fini | |
3101 | options, including program core dumps. Binutils 2.14 corrects a | |
3102 | problem on the 64-bit port resulting from HP's non-standard use of | |
3103 | the .init and .fini sections for array initializers and finalizers. | |
f401d0f5 JDA |
3104 | |
3105 | There are a number of issues to consider in selecting which linker to | |
c5124497 | 3106 | use with the 64-bit port. The GNU 64-bit linker can only create dynamic |
f401d0f5 JDA |
3107 | binaries. The @option{-static} option causes linking with archive |
3108 | libraries but doesn't produce a truly static binary. Dynamic binaries | |
3109 | still require final binding by the dynamic loader to resolve a set of | |
3110 | dynamic-loader-defined symbols. The default behavior of the HP linker | |
3111 | is the same as the GNU linker. However, it can generate true 64-bit | |
3112 | static binaries using the @option{+compat} option. | |
3113 | ||
3114 | The HP 64-bit linker doesn't support linkonce semantics. As a | |
3115 | result, C++ programs have many more sections than they should. | |
3116 | ||
3117 | The GNU 64-bit linker has some issues with shared library support | |
3118 | and exceptions. As a result, we only support libgcc in archive | |
3119 | format. For similar reasons, dwarf2 unwind and exception support | |
3120 | are disabled. The GNU linker also has problems creating binaries | |
3121 | with @option{-static}. It doesn't provide stubs for internal | |
3122 | calls to global functions in shared libraries, so these calls | |
3123 | can't be overloaded. | |
581d9404 | 3124 | |
c5124497 JDA |
3125 | Thread support is not implemented in GCC 3.0 through 3.2, so the |
3126 | @option{--enable-threads} configure option does not work. In 3.3 | |
3127 | and later, POSIX threads are supported. The optional DCE thread | |
3128 | library is not supported. | |
581d9404 JDA |
3129 | |
3130 | This port still is undergoing significant development. | |
08b3d104 | 3131 | |
f42974dc | 3132 | @html |
b8db17af | 3133 | <hr /> |
f42974dc | 3134 | @end html |
5a4c9b10 | 3135 | @heading @anchor{x-x-linux-gnu}*-*-linux-gnu |
f42974dc | 3136 | |
b818de22 | 3137 | Versions of libstdc++-v3 starting with 3.2.1 require bug fixes present |
9e80ada7 PE |
3138 | in glibc 2.2.5 and later. More information is available in the |
3139 | libstdc++-v3 documentation. | |
3140 | ||
f42974dc | 3141 | @html |
b8db17af | 3142 | <hr /> |
f42974dc | 3143 | @end html |
5a4c9b10 | 3144 | @heading @anchor{ix86-x-linux}i?86-*-linux* |
f42974dc | 3145 | |
1ea6f4c8 DH |
3146 | As of GCC 3.3, binutils 2.13.1 or later is required for this platform. |
3147 | See @uref{http://gcc.gnu.org/PR10877,,bug 10877} for more information. | |
f42974dc DW |
3148 | |
3149 | If you receive Signal 11 errors when building on GNU/Linux, then it is | |
3150 | possible you have a hardware problem. Further information on this can be | |
3151 | found on @uref{http://www.bitwizard.nl/sig11/,,www.bitwizard.nl}. | |
3152 | ||
8f47c084 JM |
3153 | @html |
3154 | <hr /> | |
3155 | @end html | |
d8fcd085 | 3156 | @heading @anchor{ix86-x-solaris210}i?86-*-solaris2.10 |
8f47c084 JM |
3157 | Use this for Solaris 10 or later on x86 and x86-64 systems. This |
3158 | configuration is supported by GCC 4.0 and later versions only. | |
3159 | ||
3160 | It is recommended that you configure GCC to use the GNU assembler in | |
3161 | @file{/usr/sfw/bin/gas} but the Sun linker, using the options | |
3162 | @option{--with-gnu-as --with-as=/usr/sfw/bin/gas --without-gnu-ld | |
3163 | --with-ld=/usr/ccs/bin/ld}. | |
3164 | ||
b499d9ab | 3165 | @html |
b8db17af | 3166 | <hr /> |
b499d9ab | 3167 | @end html |
5a4c9b10 | 3168 | @heading @anchor{ia64-x-linux}ia64-*-linux |
b499d9ab JJ |
3169 | IA-64 processor (also known as IPF, or Itanium Processor Family) |
3170 | running GNU/Linux. | |
3171 | ||
443728bb L |
3172 | If you are using the installed system libunwind library with |
3173 | @option{--with-system-libunwind}, then you must use libunwind 0.98 or | |
3174 | later. | |
bcd11e5e | 3175 | |
b499d9ab JJ |
3176 | None of the following versions of GCC has an ABI that is compatible |
3177 | with any of the other versions in this list, with the exception that | |
3178 | Red Hat 2.96 and Trillian 000171 are compatible with each other: | |
41ca24de | 3179 | 3.1, 3.0.2, 3.0.1, 3.0, Red Hat 2.96, and Trillian 000717. |
b499d9ab | 3180 | This primarily affects C++ programs and programs that create shared libraries. |
41ca24de DH |
3181 | GCC 3.1 or later is recommended for compiling linux, the kernel. |
3182 | As of version 3.1 GCC is believed to be fully ABI compliant, and hence no | |
3183 | more major ABI changes are expected. | |
b499d9ab | 3184 | |
959a73a4 DH |
3185 | @html |
3186 | <hr /> | |
3187 | @end html | |
5a4c9b10 | 3188 | @heading @anchor{ia64-x-hpux}ia64-*-hpux* |
8a36672b JM |
3189 | Building GCC on this target requires the GNU Assembler. The bundled HP |
3190 | assembler will not work. To prevent GCC from using the wrong assembler, | |
959a73a4 DH |
3191 | the option @option{--with-gnu-as} may be necessary. |
3192 | ||
8a36672b | 3193 | The GCC libunwind library has not been ported to HPUX@. This means that for |
959a73a4 | 3194 | GCC versions 3.2.3 and earlier, @option{--enable-libunwind-exceptions} |
8a36672b | 3195 | is required to build GCC@. For GCC 3.3 and later, this is the default. |
443728bb L |
3196 | For gcc 3.4.3 and later, @option{--enable-libunwind-exceptions} is |
3197 | removed and the system libunwind library will always be used. | |
959a73a4 | 3198 | |
f42974dc | 3199 | @html |
b8db17af | 3200 | <hr /> |
f42974dc DW |
3201 | <!-- rs6000-ibm-aix*, powerpc-ibm-aix* --> |
3202 | @end html | |
5a4c9b10 | 3203 | @heading @anchor{x-ibm-aix}*-ibm-aix* |
6a1dbbaf | 3204 | Support for AIX version 3 and older was discontinued in GCC 3.4. |
f42974dc | 3205 | |
7cc654b8 DE |
3206 | ``out of memory'' bootstrap failures may indicate a problem with |
3207 | process resource limits (ulimit). Hard limits are configured in the | |
71fc0c16 | 3208 | @file{/etc/security/limits} system configuration file. |
7cc654b8 | 3209 | |
e8d8a034 DE |
3210 | To speed up the configuration phases of bootstrapping and installing GCC, |
3211 | one may use GNU Bash instead of AIX @command{/bin/sh}, e.g., | |
3212 | ||
3213 | @smallexample | |
3214 | % CONFIG_SHELL=/opt/freeware/bin/bash | |
3215 | % export CONFIG_SHELL | |
3216 | @end smallexample | |
3217 | ||
cc11cc9b PB |
3218 | and then proceed as described in @uref{build.html,,the build |
3219 | instructions}, where we strongly recommend specifying an absolute path | |
e8d8a034 DE |
3220 | to invoke @var{srcdir}/configure. |
3221 | ||
d3a95f27 DE |
3222 | Because GCC on AIX is built as a 32-bit executable by default, |
3223 | (although it can generate 64-bit programs) the GMP and MPFR libraries | |
3224 | required by gfortran must be 32-bit libraries. Building GMP and MPFR | |
3225 | as static archive libraries works better than shared libraries. | |
3226 | ||
6cfb3f16 | 3227 | Errors involving @code{alloca} when building GCC generally are due |
021c4bfd | 3228 | to an incorrect definition of @code{CC} in the Makefile or mixing files |
161d7b59 | 3229 | compiled with the native C compiler and GCC@. During the stage1 phase of |
6cfb3f16 JM |
3230 | the build, the native AIX compiler @strong{must} be invoked as @command{cc} |
3231 | (not @command{xlc}). Once @command{configure} has been informed of | |
3232 | @command{xlc}, one needs to use @samp{make distclean} to remove the | |
38209993 | 3233 | configure cache files and ensure that @env{CC} environment variable |
f42974dc DW |
3234 | does not provide a definition that will confuse @command{configure}. |
3235 | If this error occurs during stage2 or later, then the problem most likely | |
3236 | is the version of Make (see above). | |
3237 | ||
f0483418 | 3238 | The native @command{as} and @command{ld} are recommended for bootstrapping |
8a36672b | 3239 | on AIX 4 and required for bootstrapping on AIX 5L@. The GNU Assembler |
f0483418 DE |
3240 | reports that it supports WEAK symbols on AIX 4, which causes GCC to try to |
3241 | utilize weak symbol functionality although it is not supported. The GNU | |
8a36672b | 3242 | Assembler and Linker do not support AIX 5L sufficiently to bootstrap GCC@. |
f0483418 | 3243 | The native AIX tools do interoperate with GCC@. |
df002c7d | 3244 | |
04d2be8e | 3245 | Building @file{libstdc++.a} requires a fix for an AIX Assembler bug |
bb674cef DE |
3246 | APAR IY26685 (AIX 4.3) or APAR IY25528 (AIX 5.1). It also requires a |
3247 | fix for another AIX Assembler bug and a co-dependent AIX Archiver fix | |
06e7f299 | 3248 | referenced as APAR IY53606 (AIX 5.2) or a APAR IY54774 (AIX 5.1) |
2705baf5 | 3249 | |
bb674cef | 3250 | @samp{libstdc++} in GCC 3.4 increments the major version number of the |
fdf68669 | 3251 | shared object and GCC installation places the @file{libstdc++.a} |
bb674cef DE |
3252 | shared library in a common location which will overwrite the and GCC |
3253 | 3.3 version of the shared library. Applications either need to be | |
3254 | re-linked against the new shared library or the GCC 3.1 and GCC 3.3 | |
3255 | versions of the @samp{libstdc++} shared object needs to be available | |
3256 | to the AIX runtime loader. The GCC 3.1 @samp{libstdc++.so.4}, if | |
3257 | present, and GCC 3.3 @samp{libstdc++.so.5} shared objects can be | |
3258 | installed for runtime dynamic loading using the following steps to set | |
3259 | the @samp{F_LOADONLY} flag in the shared object for @emph{each} | |
fdf68669 DE |
3260 | multilib @file{libstdc++.a} installed: |
3261 | ||
bb674cef DE |
3262 | Extract the shared objects from the currently installed |
3263 | @file{libstdc++.a} archive: | |
3ab51846 | 3264 | @smallexample |
bb674cef | 3265 | % ar -x libstdc++.a libstdc++.so.4 libstdc++.so.5 |
3ab51846 | 3266 | @end smallexample |
fdf68669 DE |
3267 | |
3268 | Enable the @samp{F_LOADONLY} flag so that the shared object will be | |
3269 | available for runtime dynamic loading, but not linking: | |
3ab51846 | 3270 | @smallexample |
bb674cef | 3271 | % strip -e libstdc++.so.4 libstdc++.so.5 |
3ab51846 | 3272 | @end smallexample |
fdf68669 | 3273 | |
bb674cef | 3274 | Archive the runtime-only shared object in the GCC 3.4 |
fdf68669 | 3275 | @file{libstdc++.a} archive: |
3ab51846 | 3276 | @smallexample |
bb674cef | 3277 | % ar -q libstdc++.a libstdc++.so.4 libstdc++.so.5 |
3ab51846 | 3278 | @end smallexample |
fdf68669 | 3279 | |
df002c7d DE |
3280 | Linking executables and shared libraries may produce warnings of |
3281 | duplicate symbols. The assembly files generated by GCC for AIX always | |
3282 | have included multiple symbol definitions for certain global variable | |
3283 | and function declarations in the original program. The warnings should | |
3284 | not prevent the linker from producing a correct library or runnable | |
3285 | executable. | |
3286 | ||
6cfb3f16 | 3287 | AIX 4.3 utilizes a ``large format'' archive to support both 32-bit and |
df002c7d DE |
3288 | 64-bit object modules. The routines provided in AIX 4.3.0 and AIX 4.3.1 |
3289 | to parse archive libraries did not handle the new format correctly. | |
3290 | These routines are used by GCC and result in error messages during | |
6cfb3f16 | 3291 | linking such as ``not a COFF file''. The version of the routines shipped |
df002c7d DE |
3292 | with AIX 4.3.1 should work for a 32-bit environment. The @option{-g} |
3293 | option of the archive command may be used to create archives of 32-bit | |
6cfb3f16 | 3294 | objects using the original ``small format''. A correct version of the |
d5d8d540 | 3295 | routines is shipped with AIX 4.3.2 and above. |
df002c7d | 3296 | |
f42974dc DW |
3297 | Some versions of the AIX binder (linker) can fail with a relocation |
3298 | overflow severe error when the @option{-bbigtoc} option is used to link | |
161d7b59 | 3299 | GCC-produced object files into an executable that overflows the TOC@. A fix |
f42974dc DW |
3300 | for APAR IX75823 (OVERFLOW DURING LINK WHEN USING GCC AND -BBIGTOC) is |
3301 | available from IBM Customer Support and from its | |
d5d8d540 | 3302 | @uref{http://techsupport.services.ibm.com/,,techsupport.services.ibm.com} |
f42974dc DW |
3303 | website as PTF U455193. |
3304 | ||
df002c7d | 3305 | The AIX 4.3.2.1 linker (bos.rte.bind_cmds Level 4.3.2.1) will dump core |
161d7b59 | 3306 | with a segmentation fault when invoked by any version of GCC@. A fix for |
df002c7d | 3307 | APAR IX87327 is available from IBM Customer Support and from its |
d5d8d540 | 3308 | @uref{http://techsupport.services.ibm.com/,,techsupport.services.ibm.com} |
df002c7d | 3309 | website as PTF U461879. This fix is incorporated in AIX 4.3.3 and above. |
f42974dc DW |
3310 | |
3311 | The initial assembler shipped with AIX 4.3.0 generates incorrect object | |
3312 | files. A fix for APAR IX74254 (64BIT DISASSEMBLED OUTPUT FROM COMPILER FAILS | |
3313 | TO ASSEMBLE/BIND) is available from IBM Customer Support and from its | |
d5d8d540 | 3314 | @uref{http://techsupport.services.ibm.com/,,techsupport.services.ibm.com} |
f42974dc DW |
3315 | website as PTF U453956. This fix is incorporated in AIX 4.3.1 and above. |
3316 | ||
161d7b59 | 3317 | AIX provides National Language Support (NLS)@. Compilers and assemblers |
df002c7d | 3318 | use NLS to support locale-specific representations of various data |
6cfb3f16 | 3319 | formats including floating-point numbers (e.g., @samp{.} vs @samp{,} for |
df002c7d DE |
3320 | separating decimal fractions). There have been problems reported where |
3321 | GCC does not produce the same floating-point formats that the assembler | |
c771326b | 3322 | expects. If one encounters this problem, set the @env{LANG} |
6cfb3f16 | 3323 | environment variable to @samp{C} or @samp{En_US}. |
f42974dc | 3324 | |
5791e6da DE |
3325 | By default, GCC for AIX 4.1 and above produces code that can be used on |
3326 | both Power or PowerPC processors. | |
3327 | ||
d5d8d540 DE |
3328 | A default can be specified with the @option{-mcpu=@var{cpu_type}} |
3329 | switch and using the configure option @option{--with-cpu-@var{cpu_type}}. | |
f42974dc | 3330 | |
6b3d1e47 SC |
3331 | @html |
3332 | <hr /> | |
3333 | @end html | |
5a4c9b10 | 3334 | @heading @anchor{iq2000-x-elf}iq2000-*-elf |
6b3d1e47 SC |
3335 | Vitesse IQ2000 processors. These are used in embedded |
3336 | applications. There are no standard Unix configurations. | |
3337 | ||
38b2d076 DD |
3338 | @html |
3339 | <hr /> | |
3340 | @end html | |
3341 | @heading @anchor{m32c-x-elf}m32c-*-elf | |
3342 | Renesas M32C processor. | |
3343 | This configuration is intended for embedded systems. | |
3344 | ||
b8df899a | 3345 | @html |
b8db17af | 3346 | <hr /> |
b8df899a | 3347 | @end html |
5a4c9b10 | 3348 | @heading @anchor{m32r-x-elf}m32r-*-elf |
25f47a4c | 3349 | Renesas M32R processor. |
b8df899a JM |
3350 | This configuration is intended for embedded systems. |
3351 | ||
b8df899a | 3352 | @html |
b8db17af | 3353 | <hr /> |
b8df899a JM |
3354 | @end html |
3355 | @heading @anchor{m6811-elf}m6811-elf | |
3356 | Motorola 68HC11 family micro controllers. These are used in embedded | |
3357 | applications. There are no standard Unix configurations. | |
3358 | ||
3359 | @html | |
b8db17af | 3360 | <hr /> |
b8df899a JM |
3361 | @end html |
3362 | @heading @anchor{m6812-elf}m6812-elf | |
3363 | Motorola 68HC12 family micro controllers. These are used in embedded | |
3364 | applications. There are no standard Unix configurations. | |
3365 | ||
b8df899a | 3366 | @html |
b8db17af | 3367 | <hr /> |
b8df899a | 3368 | @end html |
183dc04b | 3369 | @heading @anchor{m68k-x-x}m68k-*-* |
10e96df4 NS |
3370 | By default, @samp{m68k-*-aout}, @samp{m68k-*-coff*}, |
3371 | @samp{m68k-*-elf*}, @samp{m68k-*-rtems} and @samp{m68k-*-uclinux} | |
3372 | build libraries for both M680x0 and ColdFire processors. If you only | |
3373 | need the M680x0 libraries, you can omit the ColdFire ones by passing | |
3374 | @option{--with-arch=m68k} to @command{configure}. Alternatively, you | |
3375 | can omit the M680x0 libraries by passing @option{--with-arch=cf} to | |
3376 | @command{configure}. These targets default to 5206 code when | |
3377 | configured with @option{--with-arch=cf} and 68020 code otherwise. | |
3378 | ||
3379 | The @samp{m68k-*-linux-gnu}, @samp{m68k-*-netbsd} and | |
3380 | @samp{m68k-*-openbsd} targets also support the @option{--with-arch} | |
3381 | option. They will generate ColdFire CFV4e code when configured with | |
3382 | @option{--with-arch=cf} and 68020 code otherwise. | |
3383 | ||
3384 | You can override the default processors listed above by configuring | |
3385 | with @option{--with-cpu=@var{target}}. This @var{target} can either | |
3386 | be a @option{-mcpu} argument or one of the following values: | |
3387 | @samp{m68000}, @samp{m68010}, @samp{m68020}, @samp{m68030}, | |
900ec02d | 3388 | @samp{m68040}, @samp{m68060}, @samp{m68020-40} and @samp{m68020-60}. |
59fbf3cb | 3389 | |
4529dbf1 RS |
3390 | @html |
3391 | <hr /> | |
3392 | @end html | |
3393 | @heading @anchor{m68k-x-uclinux}m68k-*-uclinux | |
3394 | GCC 4.3 changed the uClinux configuration so that it uses the | |
3395 | @samp{m68k-linux-gnu} ABI rather than the @samp{m68k-elf} ABI. | |
3396 | It also added improved support for C++ and flat shared libraries, | |
3397 | both of which were ABI changes. However, you can still use the | |
3398 | original ABI by configuring for @samp{m68k-uclinuxoldabi} or | |
3399 | @samp{m68k-@var{vendor}-uclinuxoldabi}. | |
3400 | ||
b8df899a | 3401 | @html |
b8db17af | 3402 | <hr /> |
b8df899a | 3403 | @end html |
5a4c9b10 | 3404 | @heading @anchor{mips-x-x}mips-*-* |
b8df899a JM |
3405 | If on a MIPS system you get an error message saying ``does not have gp |
3406 | sections for all it's [sic] sectons [sic]'', don't worry about it. This | |
3407 | happens whenever you use GAS with the MIPS linker, but there is not | |
3408 | really anything wrong, and it is okay to use the output file. You can | |
3409 | stop such warnings by installing the GNU linker. | |
3410 | ||
3411 | It would be nice to extend GAS to produce the gp tables, but they are | |
3412 | optional, and there should not be a warning about their absence. | |
3413 | ||
26979a17 PE |
3414 | The libstdc++ atomic locking routines for MIPS targets requires MIPS II |
3415 | and later. A patch went in just after the GCC 3.3 release to | |
3416 | make @samp{mips*-*-*} use the generic implementation instead. You can also | |
3417 | configure for @samp{mipsel-elf} as a workaround. The | |
3418 | @samp{mips*-*-linux*} target continues to use the MIPS II routines. More | |
3419 | work on this is expected in future releases. | |
3420 | ||
66471b47 DD |
3421 | @c If you make --with-llsc the default for another target, please also |
3422 | @c update the description of the --with-llsc option. | |
3423 | ||
3424 | The built-in @code{__sync_*} functions are available on MIPS II and | |
3425 | later systems and others that support the @samp{ll}, @samp{sc} and | |
3426 | @samp{sync} instructions. This can be overridden by passing | |
3427 | @option{--with-llsc} or @option{--without-llsc} when configuring GCC. | |
3428 | Since the Linux kernel emulates these instructions if they are | |
3429 | missing, the default for @samp{mips*-*-linux*} targets is | |
3430 | @option{--with-llsc}. The @option{--with-llsc} and | |
3431 | @option{--without-llsc} configure options may be overridden at compile | |
3432 | time by passing the @option{-mllsc} or @option{-mno-llsc} options to | |
3433 | the compiler. | |
3434 | ||
9f0df97a DD |
3435 | MIPS systems check for division by zero (unless |
3436 | @option{-mno-check-zero-division} is passed to the compiler) by | |
3437 | generating either a conditional trap or a break instruction. Using | |
3438 | trap results in smaller code, but is only supported on MIPS II and | |
3439 | later. Also, some versions of the Linux kernel have a bug that | |
8a36672b | 3440 | prevents trap from generating the proper signal (@code{SIGFPE}). To enable |
9f0df97a | 3441 | the use of break, use the @option{--with-divide=breaks} |
8a36672b | 3442 | @command{configure} option when configuring GCC@. The default is to |
9f0df97a DD |
3443 | use traps on systems that support them. |
3444 | ||
a4d05547 | 3445 | Cross-compilers for the MIPS as target using the MIPS assembler |
01e97976 JM |
3446 | currently do not work, because the auxiliary programs |
3447 | @file{mips-tdump.c} and @file{mips-tfile.c} can't be compiled on | |
0ee2ea09 | 3448 | anything but a MIPS@. It does work to cross compile for a MIPS |
01e97976 JM |
3449 | if you use the GNU assembler and linker. |
3450 | ||
3eb3cf05 DD |
3451 | The assembler from GNU binutils 2.17 and earlier has a bug in the way |
3452 | it sorts relocations for REL targets (o32, o64, EABI). This can cause | |
3453 | bad code to be generated for simple C++ programs. Also the linker | |
3454 | from GNU binutils versions prior to 2.17 has a bug which causes the | |
3455 | runtime linker stubs in very large programs, like @file{libgcj.so}, to | |
4e2e9e9b DD |
3456 | be incorrectly generated. GNU Binutils 2.18 and later (and snapshots |
3457 | made after Nov. 9, 2006) should be free from both of these problems. | |
549fb079 | 3458 | |
5fb57097 EB |
3459 | @html |
3460 | <hr /> | |
3461 | @end html | |
b953cc4b RO |
3462 | @heading @anchor{mips-sgi-irix5}mips-sgi-irix5 |
3463 | ||
7e270317 RO |
3464 | In order to compile GCC on an SGI running IRIX 5, the @samp{compiler_dev.hdr} |
3465 | subsystem must be installed from the IDO CD-ROM supplied by SGI@. | |
3466 | It is also available for download from | |
8df5a2b4 | 3467 | @uref{ftp://ftp.sgi.com/sgi/IRIX5.3/iris-development-option-5.3.tardist}. |
f42974dc | 3468 | |
213ba345 RO |
3469 | If you use the MIPS C compiler to bootstrap, it may be necessary |
3470 | to increase its table size for switch statements with the | |
3471 | @option{-Wf,-XNg1500} option. If you use the @option{-O2} | |
3472 | optimization option, you also need to use @option{-Olimit 3000}. | |
f42974dc | 3473 | |
7e270317 | 3474 | To enable debugging under IRIX 5, you must use GNU binutils 2.15 or |
82563d35 RS |
3475 | later, and use the @option{--with-gnu-ld} @command{configure} option |
3476 | when configuring GCC@. You need to use GNU @command{ar} and @command{nm}, | |
3477 | also distributed with GNU binutils. | |
f42974dc | 3478 | |
c5e1045b RS |
3479 | Some users have reported that @command{/bin/sh} will hang during bootstrap. |
3480 | This problem can be avoided by running the commands: | |
3481 | ||
3482 | @smallexample | |
3483 | % CONFIG_SHELL=/bin/ksh | |
3484 | % export CONFIG_SHELL | |
3485 | @end smallexample | |
3486 | ||
3487 | before starting the build. | |
3488 | ||
f42974dc | 3489 | @html |
b8db17af | 3490 | <hr /> |
f42974dc | 3491 | @end html |
b953cc4b | 3492 | @heading @anchor{mips-sgi-irix6}mips-sgi-irix6 |
f42974dc | 3493 | |
7e270317 | 3494 | If you are using SGI's MIPSpro @command{cc} as your bootstrap compiler, you must |
f42974dc DW |
3495 | ensure that the N32 ABI is in use. To test this, compile a simple C |
3496 | file with @command{cc} and then run @command{file} on the | |
3497 | resulting object file. The output should look like: | |
3498 | ||
3ab51846 | 3499 | @smallexample |
213ba345 | 3500 | test.o: ELF N32 MSB @dots{} |
3ab51846 | 3501 | @end smallexample |
f42974dc DW |
3502 | |
3503 | If you see: | |
213ba345 | 3504 | |
3ab51846 | 3505 | @smallexample |
213ba345 | 3506 | test.o: ELF 32-bit MSB @dots{} |
3ab51846 | 3507 | @end smallexample |
213ba345 RO |
3508 | |
3509 | or | |
3510 | ||
3ab51846 | 3511 | @smallexample |
213ba345 | 3512 | test.o: ELF 64-bit MSB @dots{} |
3ab51846 | 3513 | @end smallexample |
f42974dc | 3514 | |
213ba345 | 3515 | then your version of @command{cc} uses the O32 or N64 ABI by default. You |
38209993 | 3516 | should set the environment variable @env{CC} to @samp{cc -n32} |
82563d35 | 3517 | before configuring GCC@. |
f42974dc | 3518 | |
0fca60ab | 3519 | If you want the resulting @command{gcc} to run on old 32-bit systems |
7e270317 | 3520 | with the MIPS R4400 CPU, you need to ensure that only code for the @samp{mips3} |
0fca60ab RO |
3521 | instruction set architecture (ISA) is generated. While GCC 3.x does |
3522 | this correctly, both GCC 2.95 and SGI's MIPSpro @command{cc} may change | |
3523 | the ISA depending on the machine where GCC is built. Using one of them | |
7e270317 RO |
3524 | as the bootstrap compiler may result in @samp{mips4} code, which won't run at |
3525 | all on @samp{mips3}-only systems. For the test program above, you should see: | |
0fca60ab | 3526 | |
3ab51846 | 3527 | @smallexample |
0fca60ab | 3528 | test.o: ELF N32 MSB mips-3 @dots{} |
3ab51846 | 3529 | @end smallexample |
0fca60ab RO |
3530 | |
3531 | If you get: | |
3532 | ||
3ab51846 | 3533 | @smallexample |
0fca60ab | 3534 | test.o: ELF N32 MSB mips-4 @dots{} |
3ab51846 | 3535 | @end smallexample |
0fca60ab RO |
3536 | |
3537 | instead, you should set the environment variable @env{CC} to @samp{cc | |
3538 | -n32 -mips3} or @samp{gcc -mips3} respectively before configuring GCC@. | |
3539 | ||
82563d35 RS |
3540 | MIPSpro C 7.4 may cause bootstrap failures, due to a bug when inlining |
3541 | @code{memcmp}. Either add @code{-U__INLINE_INTRINSICS} to the @env{CC} | |
3542 | environment variable as a workaround or upgrade to MIPSpro C 7.4.1m. | |
3543 | ||
7e270317 RO |
3544 | GCC on IRIX 6 is usually built to support the N32, O32 and N64 ABIs. If |
3545 | you build GCC on a system that doesn't have the N64 libraries installed | |
3546 | or cannot run 64-bit binaries, | |
213ba345 | 3547 | you need to configure with @option{--disable-multilib} so GCC doesn't |
7e270317 RO |
3548 | try to use them. This will disable building the O32 libraries, too. |
3549 | Look for @file{/usr/lib64/libc.so.1} to see if you | |
213ba345 RO |
3550 | have the 64-bit libraries installed. |
3551 | ||
7e270317 RO |
3552 | To enable debugging for the O32 ABI, you must use GNU @command{as} from |
3553 | GNU binutils 2.15 or later. You may also use GNU @command{ld}, but | |
3554 | this is not required and currently causes some problems with Ada. | |
f42974dc | 3555 | |
40f5cc95 | 3556 | The @option{--enable-libgcj} |
b953cc4b | 3557 | option is disabled by default: IRIX 6 uses a very low default limit |
7e270317 | 3558 | (20480) for the command line length. Although @command{libtool} contains a |
b953cc4b RO |
3559 | workaround for this problem, at least the N64 @samp{libgcj} is known not |
3560 | to build despite this, running into an internal error of the native | |
3561 | @command{ld}. A sure fix is to increase this limit (@samp{ncargs}) to | |
3562 | its maximum of 262144 bytes. If you have root access, you can use the | |
3563 | @command{systune} command to do this. | |
3564 | ||
93e89068 PC |
3565 | @code{wchar_t} support in @samp{libstdc++} is not available for old |
3566 | IRIX 6.5.x releases, @math{x < 19}. The problem cannot be autodetected | |
3567 | and in order to build GCC for such targets you need to configure with | |
3568 | @option{--disable-wchar_t}. | |
3569 | ||
7e270317 | 3570 | See @uref{http://freeware.sgi.com/} for more |
3aa8219e | 3571 | information about using GCC on IRIX platforms. |
f42974dc | 3572 | |
b8df899a | 3573 | @html |
b8db17af | 3574 | <hr /> |
b8df899a | 3575 | @end html |
5a4c9b10 | 3576 | @heading @anchor{powerpc-x-x}powerpc-*-* |
b8df899a | 3577 | |
6cfb3f16 JM |
3578 | You can specify a default version for the @option{-mcpu=@var{cpu_type}} |
3579 | switch by using the configure option @option{--with-cpu-@var{cpu_type}}. | |
b8df899a | 3580 | |
4f2b1139 | 3581 | @html |
b8db17af | 3582 | <hr /> |
4f2b1139 | 3583 | @end html |
5a4c9b10 | 3584 | @heading @anchor{powerpc-x-darwin}powerpc-*-darwin* |
4f2b1139 SS |
3585 | PowerPC running Darwin (Mac OS X kernel). |
3586 | ||
4f2b1139 SS |
3587 | Pre-installed versions of Mac OS X may not include any developer tools, |
3588 | meaning that you will not be able to build GCC from source. Tool | |
3589 | binaries are available at | |
beb5f807 | 3590 | @uref{http://developer.apple.com/darwin/projects/compiler/} (free |
4f2b1139 SS |
3591 | registration required). |
3592 | ||
80c85ca2 MS |
3593 | This version of GCC requires at least cctools-590.36. The |
3594 | cctools-590.36 package referenced from | |
3595 | @uref{http://gcc.gnu.org/ml/gcc/2006-03/msg00507.html} will not work | |
3596 | on systems older than 10.3.9 (aka darwin7.9.0). | |
4f2b1139 | 3597 | |
021c4bfd | 3598 | @html |
b8db17af | 3599 | <hr /> |
021c4bfd | 3600 | @end html |
cd985f66 | 3601 | @heading @anchor{powerpc-x-elf}powerpc-*-elf |
021c4bfd RO |
3602 | PowerPC system in big endian mode, running System V.4. |
3603 | ||
f42974dc | 3604 | @html |
b8db17af | 3605 | <hr /> |
f42974dc | 3606 | @end html |
5a4c9b10 | 3607 | @heading @anchor{powerpc-x-linux-gnu}powerpc*-*-linux-gnu* |
f42974dc | 3608 | |
f9047ed3 | 3609 | You will need |
c3a2edb6 | 3610 | @uref{ftp://ftp.kernel.org/pub/linux/devel/binutils,,binutils 2.15} |
791a949f | 3611 | or newer for a working GCC@. |
f42974dc | 3612 | |
edf1b3f3 | 3613 | @html |
b8db17af | 3614 | <hr /> |
edf1b3f3 | 3615 | @end html |
5a4c9b10 | 3616 | @heading @anchor{powerpc-x-netbsd}powerpc-*-netbsd* |
edf1b3f3 | 3617 | PowerPC system in big endian mode running NetBSD@. To build the |
1a598a97 | 3618 | documentation you will need Texinfo version 4.4 (NetBSD 1.5.1 included |
edf1b3f3 AC |
3619 | Texinfo version 3.12). |
3620 | ||
b8df899a | 3621 | @html |
b8db17af | 3622 | <hr /> |
b8df899a | 3623 | @end html |
5a4c9b10 | 3624 | @heading @anchor{powerpc-x-eabisim}powerpc-*-eabisim |
b8df899a JM |
3625 | Embedded PowerPC system in big endian mode for use in running under the |
3626 | PSIM simulator. | |
3627 | ||
b8df899a | 3628 | @html |
b8db17af | 3629 | <hr /> |
b8df899a | 3630 | @end html |
5a4c9b10 | 3631 | @heading @anchor{powerpc-x-eabi}powerpc-*-eabi |
b8df899a JM |
3632 | Embedded PowerPC system in big endian mode. |
3633 | ||
b8df899a | 3634 | @html |
b8db17af | 3635 | <hr /> |
b8df899a | 3636 | @end html |
cd985f66 | 3637 | @heading @anchor{powerpcle-x-elf}powerpcle-*-elf |
b8df899a JM |
3638 | PowerPC system in little endian mode, running System V.4. |
3639 | ||
b8df899a | 3640 | @html |
b8db17af | 3641 | <hr /> |
b8df899a | 3642 | @end html |
5a4c9b10 | 3643 | @heading @anchor{powerpcle-x-eabisim}powerpcle-*-eabisim |
b8df899a JM |
3644 | Embedded PowerPC system in little endian mode for use in running under |
3645 | the PSIM simulator. | |
3646 | ||
3647 | @html | |
b8db17af | 3648 | <hr /> |
b8df899a | 3649 | @end html |
5a4c9b10 | 3650 | @heading @anchor{powerpcle-x-eabi}powerpcle-*-eabi |
b8df899a JM |
3651 | Embedded PowerPC system in little endian mode. |
3652 | ||
91abf72d | 3653 | @html |
b8db17af | 3654 | <hr /> |
91abf72d | 3655 | @end html |
5a4c9b10 | 3656 | @heading @anchor{s390-x-linux}s390-*-linux* |
95fef11f | 3657 | S/390 system running GNU/Linux for S/390@. |
91abf72d HP |
3658 | |
3659 | @html | |
b8db17af | 3660 | <hr /> |
91abf72d | 3661 | @end html |
5a4c9b10 | 3662 | @heading @anchor{s390x-x-linux}s390x-*-linux* |
95fef11f | 3663 | zSeries system (64-bit) running GNU/Linux for zSeries@. |
91abf72d | 3664 | |
8bf06993 UW |
3665 | @html |
3666 | <hr /> | |
3667 | @end html | |
5a4c9b10 | 3668 | @heading @anchor{s390x-ibm-tpf}s390x-ibm-tpf* |
8a36672b | 3669 | zSeries system (64-bit) running TPF@. This platform is |
8bf06993 UW |
3670 | supported as cross-compilation target only. |
3671 | ||
f42974dc | 3672 | @html |
b8db17af | 3673 | <hr /> |
f42974dc | 3674 | @end html |
250d5688 | 3675 | @c Please use Solaris 2 to refer to all release of Solaris, starting |
1460af95 | 3676 | @c with 2.0 until 2.6, 7, 8, etc. Solaris 1 was a marketing name for |
250d5688 RO |
3677 | @c SunOS 4 releases which we don't use to avoid confusion. Solaris |
3678 | @c alone is too unspecific and must be avoided. | |
5a4c9b10 | 3679 | @heading @anchor{x-x-solaris2}*-*-solaris2* |
f42974dc | 3680 | |
250d5688 | 3681 | Sun does not ship a C compiler with Solaris 2. To bootstrap and install |
962e6e00 | 3682 | GCC you first have to install a pre-built compiler, see the |
dbd210ef | 3683 | @uref{binaries.html,,binaries page} for details. |
f42974dc | 3684 | |
250d5688 | 3685 | The Solaris 2 @command{/bin/sh} will often fail to configure |
92441f83 | 3686 | @file{libstdc++-v3}, @file{boehm-gc} or @file{libjava}. We therefore |
1da1ce3f | 3687 | recommend using the following initial sequence of commands |
bc890961 EB |
3688 | |
3689 | @smallexample | |
3690 | % CONFIG_SHELL=/bin/ksh | |
3691 | % export CONFIG_SHELL | |
bc890961 EB |
3692 | @end smallexample |
3693 | ||
1da1ce3f | 3694 | and proceed as described in @uref{configure.html,,the configure instructions}. |
37de1373 GP |
3695 | In addition we strongly recommend specifying an absolute path to invoke |
3696 | @var{srcdir}/configure. | |
e6855a2d | 3697 | |
b8df899a | 3698 | Solaris 2 comes with a number of optional OS packages. Some of these |
92441f83 | 3699 | are needed to use GCC fully, namely @code{SUNWarc}, |
dbd210ef KC |
3700 | @code{SUNWbtool}, @code{SUNWesu}, @code{SUNWhea}, @code{SUNWlibm}, |
3701 | @code{SUNWsprot}, and @code{SUNWtoo}. If you did not install all | |
250d5688 | 3702 | optional packages when installing Solaris 2, you will need to verify that |
b8df899a JM |
3703 | the packages that GCC needs are installed. |
3704 | ||
3705 | To check whether an optional package is installed, use | |
dbd210ef | 3706 | the @command{pkginfo} command. To add an optional package, use the |
250d5688 | 3707 | @command{pkgadd} command. For further details, see the Solaris 2 |
b8df899a JM |
3708 | documentation. |
3709 | ||
250d5688 | 3710 | Trying to use the linker and other tools in |
b8df899a JM |
3711 | @file{/usr/ucb} to install GCC has been observed to cause trouble. |
3712 | For example, the linker may hang indefinitely. The fix is to remove | |
250d5688 | 3713 | @file{/usr/ucb} from your @env{PATH}. |
f42974dc | 3714 | |
bc890961 EB |
3715 | The build process works more smoothly with the legacy Sun tools so, if you |
3716 | have @file{/usr/xpg4/bin} in your @env{PATH}, we recommend that you place | |
3717 | @file{/usr/bin} before @file{/usr/xpg4/bin} for the duration of the build. | |
3718 | ||
021c4bfd | 3719 | All releases of GNU binutils prior to 2.11.2 have known bugs on this |
51e9a60c EB |
3720 | platform. We recommend the use of GNU binutils 2.11.2 or later, or the |
3721 | vendor tools (Sun @command{as}, Sun @command{ld}). Note that your mileage | |
3722 | may vary if you use a combination of the GNU tools and the Sun tools: while | |
3723 | the combination GNU @command{as} + Sun @command{ld} should reasonably work, | |
3724 | the reverse combination Sun @command{as} + GNU @command{ld} is known to | |
3725 | cause memory corruption at runtime in some cases for C++ programs. | |
3726 | ||
3727 | The stock GNU binutils 2.15 release is broken on this platform because of a | |
3728 | single bug. It has been fixed on the 2.15 branch in the CVS repository. | |
3729 | You can obtain a working version by checking out the binutils-2_15-branch | |
3730 | from the CVS repository or applying the patch | |
4eb3e795 | 3731 | @uref{http://sourceware.org/ml/binutils-cvs/2004-09/msg00036.html} to the |
51e9a60c | 3732 | release. |
f42974dc | 3733 | |
ff8f80f2 EB |
3734 | We recommend using GNU binutils 2.16 or later in conjunction with GCC 4.x, |
3735 | or the vendor tools (Sun @command{as}, Sun @command{ld}). However, for | |
3736 | Solaris 10 and above, an additional patch is required in order for the GNU | |
3737 | linker to be able to cope with a new flavor of shared libraries. You | |
3738 | can obtain a working version by checking out the binutils-2_16-branch from | |
3739 | the CVS repository or applying the patch | |
2c00bd42 EB |
3740 | @uref{http://sourceware.org/ml/binutils-cvs/2005-07/msg00122.html} to the |
3741 | release. | |
3742 | ||
250d5688 RO |
3743 | Sun bug 4296832 turns up when compiling X11 headers with GCC 2.95 or |
3744 | newer: @command{g++} will complain that types are missing. These headers assume | |
3745 | that omitting the type means @code{int}; this assumption worked for C89 but | |
3746 | is wrong for C++, and is now wrong for C99 also. | |
3747 | ||
13ba36b4 | 3748 | @command{g++} accepts such (invalid) constructs with the option |
250d5688 RO |
3749 | @option{-fpermissive}; it |
3750 | will assume that any missing type is @code{int} (as defined by C89). | |
3751 | ||
3752 | There are patches for Solaris 2.6 (105633-56 or newer for SPARC, | |
3753 | 106248-42 or newer for Intel), Solaris 7 (108376-21 or newer for SPARC, | |
3754 | 108377-20 for Intel), and Solaris 8 (108652-24 or newer for SPARC, | |
3755 | 108653-22 for Intel) that fix this bug. | |
f42974dc | 3756 | |
c7525a64 KG |
3757 | Sun bug 4927647 sometimes causes random spurious testsuite failures |
3758 | related to missing diagnostic output. This bug doesn't affect GCC | |
3759 | itself, rather it is a kernel bug triggered by the @command{expect} | |
3760 | program which is used only by the GCC testsuite driver. When the bug | |
3761 | causes the @command{expect} program to miss anticipated output, extra | |
3762 | testsuite failures appear. | |
3763 | ||
3764 | There are patches for Solaris 8 (117350-12 or newer for SPARC, | |
3765 | 117351-12 or newer for Intel) and Solaris 9 (117171-11 or newer for | |
3766 | SPARC, 117172-11 or newer for Intel) that address this problem. | |
3767 | ||
dbd210ef | 3768 | @html |
b8db17af | 3769 | <hr /> |
dbd210ef | 3770 | @end html |
5a4c9b10 | 3771 | @heading @anchor{sparc-sun-solaris2}sparc-sun-solaris2* |
dbd210ef | 3772 | |
1405141b DN |
3773 | When GCC is configured to use binutils 2.11.2 or later the binaries |
3774 | produced are smaller than the ones produced using Sun's native tools; | |
3775 | this difference is quite significant for binaries containing debugging | |
3776 | information. | |
3777 | ||
250d5688 | 3778 | Sun @command{as} 4.x is broken in that it cannot cope with long symbol names. |
dbd210ef KC |
3779 | A typical error message might look similar to the following: |
3780 | ||
8c085f6f JJ |
3781 | @smallexample |
3782 | /usr/ccs/bin/as: "/var/tmp/ccMsw135.s", line 11041: error: | |
3783 | can't compute value of an expression involving an external symbol. | |
3784 | @end smallexample | |
dbd210ef | 3785 | |
250d5688 RO |
3786 | This is Sun bug 4237974. This is fixed with patch 108908-02 for Solaris |
3787 | 2.6 and has been fixed in later (5.x) versions of the assembler, | |
3788 | starting with Solaris 7. | |
dbd210ef | 3789 | |
03b272d2 | 3790 | Starting with Solaris 7, the operating system is capable of executing |
975c6e4e RO |
3791 | 64-bit SPARC V9 binaries. GCC 3.1 and later properly supports |
3792 | this; the @option{-m64} option enables 64-bit code generation. | |
3793 | However, if all you want is code tuned for the UltraSPARC CPU, you | |
3794 | should try the @option{-mtune=ultrasparc} option instead, which produces | |
3795 | code that, unlike full 64-bit code, can still run on non-UltraSPARC | |
edf1c8df | 3796 | machines. |
03b272d2 | 3797 | |
975c6e4e | 3798 | When configuring on a Solaris 7 or later system that is running a kernel |
8947df0c RH |
3799 | that supports only 32-bit binaries, one must configure with |
3800 | @option{--disable-multilib}, since we will not be able to build the | |
3801 | 64-bit target libraries. | |
3fc602a0 | 3802 | |
ae81c844 EB |
3803 | GCC 3.3 and GCC 3.4 trigger code generation bugs in earlier versions of |
3804 | the GNU compiler (especially GCC 3.0.x versions), which lead to the | |
3805 | miscompilation of the stage1 compiler and the subsequent failure of the | |
3806 | bootstrap process. A workaround is to use GCC 3.2.3 as an intermediary | |
431ae0bf | 3807 | stage, i.e.@: to bootstrap that compiler with the base compiler and then |
ae81c844 EB |
3808 | use it to bootstrap the final compiler. |
3809 | ||
94b18ec1 EB |
3810 | GCC 3.4 triggers a code generation bug in versions 5.4 (Sun ONE Studio 7) |
3811 | and 5.5 (Sun ONE Studio 8) of the Sun compiler, which causes a bootstrap | |
3812 | failure in form of a miscompilation of the stage1 compiler by the Sun | |
3813 | compiler. This is Sun bug 4974440. This is fixed with patch 112760-07. | |
3814 | ||
1460af95 | 3815 | GCC 3.4 changed the default debugging format from STABS to DWARF-2 for |
dd48afcd EB |
3816 | 32-bit code on Solaris 7 and later. If you use the Sun assembler, this |
3817 | change apparently runs afoul of Sun bug 4910101 (which is referenced as | |
3818 | a x86-only problem by Sun, probably because they do not use DWARF-2). | |
3819 | A symptom of the problem is that you cannot compile C++ programs like | |
3820 | @command{groff} 1.19.1 without getting messages similar to the following: | |
7c2f2b41 EB |
3821 | |
3822 | @smallexample | |
3823 | ld: warning: relocation error: R_SPARC_UA32: @dots{} | |
3824 | external symbolic relocation against non-allocatable section | |
3825 | .debug_info cannot be processed at runtime: relocation ignored. | |
3826 | @end smallexample | |
3827 | ||
3828 | To work around this problem, compile with @option{-gstabs+} instead of | |
3829 | plain @option{-g}. | |
1460af95 | 3830 | |
b3c9881c EB |
3831 | When configuring the GNU Multiple Precision Library (GMP) or the MPFR |
3832 | library on a Solaris 7 or later system, the canonical target triplet | |
3833 | must be specified as the @command{build} parameter on the configure | |
3834 | line. This triplet can be obtained by invoking ./config.guess in | |
3835 | the toplevel source directory of GCC (and not that of GMP or MPFR). | |
3836 | For example on a Solaris 7 system: | |
25c62e24 EB |
3837 | |
3838 | @smallexample | |
b3c9881c | 3839 | % ./configure --build=sparc-sun-solaris2.7 --prefix=xxx |
25c62e24 EB |
3840 | @end smallexample |
3841 | ||
f42974dc | 3842 | @html |
b8db17af | 3843 | <hr /> |
f42974dc | 3844 | @end html |
d8fcd085 | 3845 | @heading @anchor{sparc-sun-solaris27}sparc-sun-solaris2.7 |
f42974dc | 3846 | |
250d5688 | 3847 | Sun patch 107058-01 (1999-01-13) for Solaris 7/SPARC triggers a bug in |
f42974dc DW |
3848 | the dynamic linker. This problem (Sun bug 4210064) affects GCC 2.8 |
3849 | and later, including all EGCS releases. Sun formerly recommended | |
3850 | 107058-01 for all Solaris 7 users, but around 1999-09-01 it started to | |
3851 | recommend it only for people who use Sun's compilers. | |
f9047ed3 | 3852 | |
f42974dc DW |
3853 | Here are some workarounds to this problem: |
3854 | @itemize @bullet | |
3855 | @item | |
3856 | Do not install Sun patch 107058-01 until after Sun releases a | |
3857 | complete patch for bug 4210064. This is the simplest course to take, | |
3858 | unless you must also use Sun's C compiler. Unfortunately 107058-01 | |
250d5688 | 3859 | is preinstalled on some new Solaris 7-based hosts, so you may have to |
f42974dc | 3860 | back it out. |
f9047ed3 | 3861 | |
f42974dc DW |
3862 | @item |
3863 | Copy the original, unpatched Solaris 7 | |
3864 | @command{/usr/ccs/bin/as} into | |
8e5f33ff | 3865 | @command{/usr/local/libexec/gcc/sparc-sun-solaris2.7/3.4/as}, |
f42974dc DW |
3866 | adjusting the latter name to fit your local conventions and software |
3867 | version numbers. | |
3868 | ||
3869 | @item | |
3870 | Install Sun patch 106950-03 (1999-05-25) or later. Nobody with | |
3871 | both 107058-01 and 106950-03 installed has reported the bug with GCC | |
3872 | and Sun's dynamic linker. This last course of action is riskiest, | |
3873 | for two reasons. First, you must install 106950 on all hosts that | |
3874 | run code generated by GCC; it doesn't suffice to install it only on | |
3875 | the hosts that run GCC itself. Second, Sun says that 106950-03 is | |
3876 | only a partial fix for bug 4210064, but Sun doesn't know whether the | |
161d7b59 | 3877 | partial fix is adequate for GCC@. Revision -08 or later should fix |
1460af95 | 3878 | the bug. The current (as of 2004-05-23) revision is -24, and is included in |
f282ffb3 | 3879 | the Solaris 7 Recommended Patch Cluster. |
f9047ed3 | 3880 | @end itemize |
f42974dc | 3881 | |
fdbf04c8 EB |
3882 | GCC 3.3 triggers a bug in version 5.0 Alpha 03/27/98 of the Sun assembler, |
3883 | which causes a bootstrap failure when linking the 64-bit shared version of | |
8a36672b | 3884 | libgcc. A typical error message is: |
fdbf04c8 EB |
3885 | |
3886 | @smallexample | |
3887 | ld: fatal: relocation error: R_SPARC_32: file libgcc/sparcv9/_muldi3.o: | |
3888 | symbol <unknown>: offset 0xffffffff7ec133e7 is non-aligned. | |
3889 | @end smallexample | |
3890 | ||
3891 | This bug has been fixed in the final 5.0 version of the assembler. | |
f42974dc | 3892 | |
661f4f90 EB |
3893 | A similar problem was reported for version Sun WorkShop 6 99/08/18 of the |
3894 | Sun assembler, which causes a bootstrap failure with GCC 4.0.0: | |
3895 | ||
3896 | @smallexample | |
3897 | ld: fatal: relocation error: R_SPARC_DISP32: | |
3898 | file .libs/libstdc++.lax/libsupc++convenience.a/vterminate.o: | |
3899 | symbol <unknown>: offset 0xfccd33ad is non-aligned | |
3900 | @end smallexample | |
3901 | ||
3902 | This bug has been fixed in more recent revisions of the assembler. | |
3903 | ||
c6fa9728 | 3904 | @html |
b8db17af | 3905 | <hr /> |
c6fa9728 | 3906 | @end html |
5a4c9b10 | 3907 | @heading @anchor{sparc-x-linux}sparc-*-linux* |
c6fa9728 JS |
3908 | |
3909 | GCC versions 3.0 and higher require binutils 2.11.2 and glibc 2.2.4 | |
3910 | or newer on this platform. All earlier binutils and glibc | |
3911 | releases mishandled unaligned relocations on @code{sparc-*-*} targets. | |
3912 | ||
3913 | ||
f42974dc | 3914 | @html |
b8db17af | 3915 | <hr /> |
f42974dc | 3916 | @end html |
5a4c9b10 | 3917 | @heading @anchor{sparc64-x-solaris2}sparc64-*-solaris2* |
e403b4bc | 3918 | |
b3c9881c EB |
3919 | When configuring the GNU Multiple Precision Library (GMP) or the |
3920 | MPFR library, the canonical target triplet must be specified as | |
3921 | the @command{build} parameter on the configure line. For example | |
3922 | on a Solaris 7 system: | |
3923 | ||
3924 | @smallexample | |
3925 | % ./configure --build=sparc64-sun-solaris2.7 --prefix=xxx | |
3926 | @end smallexample | |
3927 | ||
e403b4bc CR |
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 |
b3c9881c | 3932 | % CC="cc -xarch=v9 -xildoff" @var{srcdir}/configure [@var{options}] [@var{target}] |
3ab51846 | 3933 | @end smallexample |
e403b4bc | 3934 | |
b3c9881c EB |
3935 | @option{-xarch=v9} specifies the SPARC-V9 architecture to the Sun toolchain |
3936 | and @option{-xildoff} turns off the incremental linker. | |
0dc7ee3c EB |
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 | |
4977bab6 ZW |
3945 | @html |
3946 | <hr /> | |
3947 | @end html | |
5a4c9b10 | 3948 | @heading @anchor{x-x-vxworks}*-*-vxworks* |
4977bab6 | 3949 | Support for VxWorks is in flux. At present GCC supports @emph{only} the |
8a36672b | 3950 | very recent VxWorks 5.5 (aka Tornado 2.2) release, and only on PowerPC@. |
4977bab6 ZW |
3951 | We welcome patches for other architectures supported by VxWorks 5.5. |
3952 | Support for VxWorks AE would also be welcome; we believe this is merely | |
3953 | a matter of writing an appropriate ``configlette'' (see below). We are | |
3954 | not interested in supporting older, a.out or COFF-based, versions of | |
3955 | VxWorks in GCC 3. | |
3956 | ||
3957 | VxWorks comes with an older version of GCC installed in | |
3958 | @file{@var{$WIND_BASE}/host}; we recommend you do not overwrite it. | |
3959 | Choose an installation @var{prefix} entirely outside @var{$WIND_BASE}. | |
3960 | Before running @command{configure}, create the directories @file{@var{prefix}} | |
3961 | and @file{@var{prefix}/bin}. Link or copy the appropriate assembler, | |
8a36672b | 3962 | linker, etc.@: into @file{@var{prefix}/bin}, and set your @var{PATH} to |
4977bab6 ZW |
3963 | include that directory while running both @command{configure} and |
3964 | @command{make}. | |
3965 | ||
3966 | You must give @command{configure} the | |
3967 | @option{--with-headers=@var{$WIND_BASE}/target/h} switch so that it can | |
3968 | find the VxWorks system headers. Since VxWorks is a cross compilation | |
3969 | target only, you must also specify @option{--target=@var{target}}. | |
3970 | @command{configure} will attempt to create the directory | |
3971 | @file{@var{prefix}/@var{target}/sys-include} and copy files into it; | |
3972 | make sure the user running @command{configure} has sufficient privilege | |
3973 | to do so. | |
3974 | ||
3975 | GCC's exception handling runtime requires a special ``configlette'' | |
3976 | module, @file{contrib/gthr_supp_vxw_5x.c}. Follow the instructions in | |
3977 | that file to add the module to your kernel build. (Future versions of | |
daf2f129 | 3978 | VxWorks will incorporate this module.) |
4977bab6 | 3979 | |
7e081a0c AJ |
3980 | @html |
3981 | <hr /> | |
3982 | @end html | |
d8fcd085 | 3983 | @heading @anchor{x86-64-x-x}x86_64-*-*, amd64-*-* |
7e081a0c AJ |
3984 | |
3985 | GCC supports the x86-64 architecture implemented by the AMD64 processor | |
8a36672b | 3986 | (amd64-*-* is an alias for x86_64-*-*) on GNU/Linux, FreeBSD and NetBSD@. |
7e081a0c AJ |
3987 | On GNU/Linux the default is a bi-arch compiler which is able to generate |
3988 | both 64-bit x86-64 and 32-bit x86 code (via the @option{-m32} switch). | |
3989 | ||
fd29f6ea | 3990 | @html |
b8db17af | 3991 | <hr /> |
fd29f6ea | 3992 | @end html |
5a4c9b10 | 3993 | @heading @anchor{xtensa-x-elf}xtensa-*-elf |
fd29f6ea BW |
3994 | |
3995 | This target is intended for embedded Xtensa systems using the | |
3996 | @samp{newlib} C library. It uses ELF but does not support shared | |
3997 | objects. Designed-defined instructions specified via the | |
3998 | Tensilica Instruction Extension (TIE) language are only supported | |
3999 | through inline assembly. | |
4000 | ||
4001 | The Xtensa configuration information must be specified prior to | |
e677f70c | 4002 | building GCC@. The @file{include/xtensa-config.h} header |
fd29f6ea BW |
4003 | file contains the configuration information. If you created your |
4004 | own Xtensa configuration with the Xtensa Processor Generator, the | |
4005 | downloaded files include a customized copy of this header file, | |
4006 | which you can use to replace the default header file. | |
4007 | ||
4008 | @html | |
b8db17af | 4009 | <hr /> |
fd29f6ea | 4010 | @end html |
5a4c9b10 | 4011 | @heading @anchor{xtensa-x-linux}xtensa-*-linux* |
fd29f6ea BW |
4012 | |
4013 | This target is for Xtensa systems running GNU/Linux. It supports ELF | |
4014 | shared objects and the GNU C library (glibc). It also generates | |
4015 | position-independent code (PIC) regardless of whether the | |
4016 | @option{-fpic} or @option{-fPIC} options are used. In other | |
f282ffb3 | 4017 | respects, this target is the same as the |
fd29f6ea BW |
4018 | @uref{#xtensa-*-elf,,@samp{xtensa-*-elf}} target. |
4019 | ||
f42974dc | 4020 | @html |
b8db17af | 4021 | <hr /> |
f42974dc | 4022 | @end html |
57694e40 | 4023 | @heading @anchor{windows}Microsoft Windows (32-bit) |
f42974dc | 4024 | |
5b65d351 | 4025 | Ports of GCC are included with the |
f42974dc DW |
4026 | @uref{http://www.cygwin.com/,,Cygwin environment}. |
4027 | ||
5b65d351 GP |
4028 | GCC will build under Cygwin without modification; it does not build |
4029 | with Microsoft's C++ compiler and there are no plans to make it do so. | |
ccc1ce6e | 4030 | |
fa692084 JJ |
4031 | For MinGW, GCC will build with and support only MinGW runtime 3.12 and later. |
4032 | Earlier versions of headers are incompatible with the new default semantics | |
4033 | of @code{extern inline} in @code{-std=c99} and @code{-std=gnu99} modes. | |
4034 | ||
f42974dc | 4035 | @html |
b8db17af | 4036 | <hr /> |
f42974dc | 4037 | @end html |
ef88b07d | 4038 | @heading @anchor{os2}OS/2 |
f42974dc DW |
4039 | |
4040 | GCC does not currently support OS/2. However, Andrew Zabolotny has been | |
14976c58 | 4041 | working on a generic OS/2 port with pgcc. The current code can be found |
f42974dc DW |
4042 | at @uref{http://www.goof.com/pcg/os2/,,http://www.goof.com/pcg/os2/}. |
4043 | ||
f42974dc | 4044 | @html |
b8db17af | 4045 | <hr /> |
f42974dc | 4046 | @end html |
ef88b07d | 4047 | @heading @anchor{older}Older systems |
f9047ed3 JM |
4048 | |
4049 | GCC contains support files for many older (1980s and early | |
4050 | 1990s) Unix variants. For the most part, support for these systems | |
4051 | has not been deliberately removed, but it has not been maintained for | |
c7bdf0a6 | 4052 | several years and may suffer from bitrot. |
f9047ed3 | 4053 | |
c7bdf0a6 | 4054 | Starting with GCC 3.1, each release has a list of ``obsoleted'' systems. |
9340544b ZW |
4055 | Support for these systems is still present in that release, but |
4056 | @command{configure} will fail unless the @option{--enable-obsolete} | |
c7bdf0a6 ZW |
4057 | option is given. Unless a maintainer steps forward, support for these |
4058 | systems will be removed from the next release of GCC@. | |
f9047ed3 JM |
4059 | |
4060 | Support for old systems as hosts for GCC can cause problems if the | |
4061 | workarounds for compiler, library and operating system bugs affect the | |
161d7b59 | 4062 | cleanliness or maintainability of the rest of GCC@. In some cases, to |
f9047ed3 JM |
4063 | bring GCC up on such a system, if still possible with current GCC, may |
4064 | require first installing an old version of GCC which did work on that | |
c7bdf0a6 ZW |
4065 | system, and using it to compile a more recent GCC, to avoid bugs in the |
4066 | vendor compiler. Old releases of GCC 1 and GCC 2 are available in the | |
4067 | @file{old-releases} directory on the @uref{../mirrors.html,,GCC mirror | |
4068 | sites}. Header bugs may generally be avoided using | |
4069 | @command{fixincludes}, but bugs or deficiencies in libraries and the | |
4070 | operating system may still cause problems. | |
4071 | ||
4072 | Support for older systems as targets for cross-compilation is less | |
4073 | problematic than support for them as hosts for GCC; if an enthusiast | |
4074 | wishes to make such a target work again (including resurrecting any of | |
80521187 | 4075 | the targets that never worked with GCC 2, starting from the last |
c7bdf0a6 ZW |
4076 | version before they were removed), patches |
4077 | @uref{../contribute.html,,following the usual requirements} would be | |
4078 | likely to be accepted, since they should not affect the support for more | |
4079 | modern targets. | |
f9047ed3 JM |
4080 | |
4081 | For some systems, old versions of GNU binutils may also be useful, | |
021c4bfd | 4082 | and are available from @file{pub/binutils/old-releases} on |
4eb3e795 | 4083 | @uref{http://sourceware.org/mirrors.html,,sourceware.org mirror sites}. |
f9047ed3 JM |
4084 | |
4085 | Some of the information on specific systems above relates to | |
4086 | such older systems, but much of the information | |
4087 | about GCC on such systems (which may no longer be applicable to | |
f42974dc | 4088 | current GCC) is to be found in the GCC texinfo manual. |
f9047ed3 | 4089 | |
f42974dc | 4090 | @html |
b8db17af | 4091 | <hr /> |
f42974dc | 4092 | @end html |
d8fcd085 | 4093 | @heading @anchor{elf}all ELF targets (SVR4, Solaris 2, etc.) |
f42974dc | 4094 | |
38209993 LG |
4095 | C++ support is significantly better on ELF targets if you use the |
4096 | @uref{./configure.html#with-gnu-ld,,GNU linker}; duplicate copies of | |
4097 | inlines, vtables and template instantiations will be discarded | |
4098 | automatically. | |
f42974dc DW |
4099 | |
4100 | ||
4101 | @html | |
b8db17af | 4102 | <hr /> |
f42974dc DW |
4103 | <p> |
4104 | @end html | |
4105 | @ifhtml | |
4106 | @uref{./index.html,,Return to the GCC Installation page} | |
4107 | @end ifhtml | |
4108 | @end ifset | |
4109 | ||
73e2155a JM |
4110 | @c ***Old documentation****************************************************** |
4111 | @ifset oldhtml | |
4112 | @include install-old.texi | |
4113 | @html | |
b8db17af | 4114 | <hr /> |
73e2155a JM |
4115 | <p> |
4116 | @end html | |
4117 | @ifhtml | |
4118 | @uref{./index.html,,Return to the GCC Installation page} | |
4119 | @end ifhtml | |
4120 | @end ifset | |
4121 | ||
aed5964b JM |
4122 | @c ***GFDL******************************************************************** |
4123 | @ifset gfdlhtml | |
4124 | @include fdl.texi | |
4125 | @html | |
b8db17af | 4126 | <hr /> |
aed5964b JM |
4127 | <p> |
4128 | @end html | |
4129 | @ifhtml | |
4130 | @uref{./index.html,,Return to the GCC Installation page} | |
4131 | @end ifhtml | |
4132 | @end ifset | |
4133 | ||
f42974dc DW |
4134 | @c *************************************************************************** |
4135 | @c Part 6 The End of the Document | |
4136 | @ifinfo | |
4137 | @comment node-name, next, previous, up | |
aed5964b | 4138 | @node Concept Index, , GNU Free Documentation License, Top |
f42974dc DW |
4139 | @end ifinfo |
4140 | ||
4141 | @ifinfo | |
4142 | @unnumbered Concept Index | |
4143 | ||
4144 | @printindex cp | |
4145 | ||
4146 | @contents | |
4147 | @end ifinfo | |
4148 | @bye |