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1 | \input texinfo.tex @c -*-texinfo-*- |
2 | @c @ifnothtml | |
3 | @c %**start of header | |
4 | @setfilename install.info | |
5 | @settitle Installing GCC | |
6 | @setchapternewpage odd | |
7 | @c %**end of header | |
8 | @c @end ifnothtml | |
9 | ||
10 | @c Specify title for specific html page | |
11 | @ifset indexhtml | |
12 | @settitle Installing GCC | |
13 | @end ifset | |
14 | @ifset specifichtml | |
15 | @settitle Host/Target specific installation notes for GCC | |
16 | @end ifset | |
17 | @ifset downloadhtml | |
18 | @settitle Downloading GCC | |
19 | @end ifset | |
20 | @ifset configurehtml | |
21 | @settitle Installing GCC: Configuration | |
22 | @end ifset | |
23 | @ifset buildhtml | |
24 | @settitle Installing GCC: Building | |
25 | @end ifset | |
26 | @ifset testhtml | |
27 | @settitle Installing GCC: Testing | |
28 | @end ifset | |
29 | @ifset finalinstallhtml | |
30 | @settitle Installing GCC: Final installation | |
31 | @end ifset | |
32 | @ifset binarieshtml | |
33 | @settitle Installing GCC: Binaries | |
34 | @end ifset | |
35 | ||
5791e6da | 36 | @comment $Id: install.texi,v 1.13 2001/06/02 22:33:30 jsm28 Exp $ |
f42974dc DW |
37 | @c Copyright (C) 2001 Free Software Foundation, Inc. |
38 | @c *** Converted to texinfo by Dean Wakerley, dean@wakerley.com | |
39 | ||
40 | @c Include everything if we're not making html | |
41 | @ifnothtml | |
42 | @set indexhtml | |
43 | @set specifichtml | |
44 | @set downloadhtml | |
45 | @set configurehtml | |
46 | @set buildhtml | |
47 | @set testhtml | |
48 | @set finalinstallhtml | |
49 | @set binarieshtml | |
50 | @end ifnothtml | |
51 | ||
52 | @c Part 2 Summary Description and Copyright | |
53 | @ifinfo | |
54 | ||
55 | Copyright @copyright{} 2001 Free Software Foundation, Inc. | |
56 | @end ifinfo | |
57 | ||
58 | @c Part 3 Titlepage and Copyright | |
59 | @titlepage | |
60 | @sp 10 | |
61 | @comment The title is printed in a large font. | |
ef88b07d | 62 | @center @titlefont{Installing GCC} |
f42974dc DW |
63 | |
64 | @c The following two commands start the copyright page. | |
65 | @page | |
ef88b07d | 66 | @vskip 0pt plus 1filll |
f42974dc DW |
67 | Copyright @copyright{} 2001 Free Software Foundation, Inc. |
68 | @end titlepage | |
69 | ||
70 | @c Part 4 Top node and Master Menu | |
71 | @ifinfo | |
72 | @node Top, , , (dir) | |
73 | @comment node-name, next, Previous, up | |
74 | ||
75 | @menu | |
76 | * Installing GCC:: This document describes the generic installation | |
77 | procedure for GCC as well as detailing some target | |
78 | specific installation instructions. | |
79 | ||
80 | * Specific:: Host/target specific installation notes for GCC. | |
81 | * Binaries:: Where to get pre-compiled binaries. | |
82 | ||
83 | * Concept Index:: This index has two entries. | |
84 | @end menu | |
85 | @end ifinfo | |
86 | ||
87 | @c Part 5 The Body of the Document | |
88 | @c ***Installing GCC********************************************************** | |
89 | @ifinfo | |
90 | @comment node-name, next, previous, up | |
91 | @node Installing GCC, Binaries, , Top | |
92 | @end ifinfo | |
93 | @ifset indexhtml | |
94 | @html | |
95 | <h1 align="center">Installing GCC</h1> | |
96 | @end html | |
97 | @ifnothtml | |
98 | @chapter Installing GCC | |
99 | @end ifnothtml | |
100 | ||
101 | The latest version of this document is always available at | |
102 | @uref{http://gcc.gnu.org/install/,,http://gcc.gnu.org/install/}. | |
103 | ||
104 | This document describes the generic installation procedure for GCC as well | |
105 | as detailing some target specific installation instructions. | |
106 | ||
107 | GCC includes several components that previously were separate distributions | |
108 | with their own installation instructions. This document supersedes all | |
109 | package specific installation instructions. We provide the component | |
110 | specific installation information in the source distribution for historical | |
111 | reference purposes only. | |
112 | ||
113 | @emph{Before} starting the build/install procedure please check the | |
114 | @ifnothtml | |
115 | @xref{Specific, host/target specific installation notes}. | |
116 | @end ifnothtml | |
117 | @ifnotinfo | |
118 | @uref{specific.html,,host/target specific installation notes}. | |
119 | @end ifnotinfo | |
120 | We recommend you browse the entire generic installation instructions before | |
121 | you proceed. | |
122 | ||
123 | The installation procedure itself is broken into five steps. | |
124 | ||
125 | @ifinfo | |
126 | @menu | |
127 | * Downloading the source:: | |
128 | * Configuration:: | |
129 | * Building:: | |
130 | * Testing:: (optional) | |
131 | * Final install:: | |
132 | @end menu | |
133 | @end ifinfo | |
134 | @ifnotinfo | |
135 | @enumerate | |
136 | @item | |
137 | @uref{download.html,,Downloading the source} | |
138 | @item | |
139 | @uref{configure.html,,Configuration} | |
140 | @item | |
141 | @uref{build.html,,Building} | |
142 | @item | |
143 | @uref{test.html,,Testing} (optional) | |
144 | @item | |
145 | @uref{finalinstall.html,,Final install} | |
146 | @end enumerate | |
147 | @end ifnotinfo | |
148 | ||
38209993 | 149 | Please note that GCC does not support @samp{make uninstall} and probably |
f42974dc DW |
150 | won't do so in the near future as this would open a can of worms. Instead, |
151 | we suggest that you install GCC into a directory of its own and simply | |
38209993 LG |
152 | remove that directory when you do not need that specific version of GCC |
153 | any longer. | |
f42974dc DW |
154 | |
155 | @html | |
156 | <hr> | |
157 | <p> | |
158 | @end html | |
159 | @ifhtml | |
160 | @uref{./index.html,,Return to the GCC Installation page} | |
161 | @end ifhtml | |
162 | @end ifset | |
163 | ||
164 | @c ***Downloading the source************************************************** | |
165 | @ifinfo | |
166 | @comment node-name, next, previous, up | |
167 | @node Downloading the source, Configuration, , Installing GCC | |
168 | @end ifinfo | |
169 | @ifset downloadhtml | |
170 | @html | |
171 | <h1 align="center">Downloading GCC</h1> | |
172 | @end html | |
173 | @ifnothtml | |
174 | @chapter Downloading GCC | |
175 | @end ifnothtml | |
176 | @cindex Downloading GCC | |
177 | @cindex Downloading the Source | |
178 | ||
179 | GCC is distributed via CVS and FTP tarballs compressed with gzip or | |
180 | bzip2. It is possible to download a full distribution or specific | |
181 | components. | |
182 | ||
183 | Please refer to our @uref{http://gcc.gnu.org/releases.html,,releases web page} | |
184 | for information on how to obtain GCC. | |
185 | ||
186 | The full distribution includes the C, C++, Objective-C, Fortran, Java, | |
187 | and Chill compilers. The full distribution also includes runtime libraries | |
188 | for C++, Objective-C and Fortran. In the future the GNU compiler testsuites | |
189 | will be included in the full distribution. | |
190 | ||
191 | If you choose to download specific components, you must download the core | |
192 | gcc distribution plus any language specific distributions you wish to | |
193 | use. The core distribution includes the C language front-end as well as the | |
194 | shared components. Each language has a tarball which includes the language | |
195 | front-end as well as the language runtime (when appropriate). | |
196 | ||
197 | Unpack the core distribution as well as any language specific | |
198 | distributions in the same directory. | |
199 | ||
200 | If you also intend to build binutils (either to upgrade an existing | |
201 | installation or for use in place of the corresponding tools of your | |
202 | OS), unpack the binutils distribution either in the same directory or | |
203 | a separate one. In the latter case, add symbolic links to any | |
204 | components of the binutils you intend to build alongside the compiler | |
205 | (bfd, binutils, gas, gprof, ld, opcodes,...) to the directory containing | |
206 | the GCC sources. | |
207 | ||
208 | @html | |
209 | <hr> | |
210 | <p> | |
211 | @end html | |
212 | @ifhtml | |
213 | @uref{./index.html,,Return to the GCC Installation page} | |
214 | @end ifhtml | |
215 | @end ifset | |
216 | ||
217 | @c ***Configuration*********************************************************** | |
218 | @ifinfo | |
219 | @comment node-name, next, previous, up | |
220 | @node Configuration, Building, Downloading the source, Installing GCC | |
221 | @end ifinfo | |
222 | @ifset configurehtml | |
223 | @html | |
224 | <h1 align="center">Installing GCC: Configuration</h1> | |
225 | @end html | |
226 | @ifnothtml | |
227 | @chapter Installing GCC: Configuration | |
228 | @end ifnothtml | |
229 | @cindex Configuration | |
230 | @cindex Installing GCC: Configuration | |
231 | ||
232 | Like most GNU software, GCC must be configured before it can be built. | |
233 | This document describes the recommended configuration procedure | |
234 | for both native and cross targets. | |
235 | ||
38209993 LG |
236 | We use @var{srcdir} to refer to the toplevel source directory for |
237 | GCC; we use @var{objdir} to refer to the toplevel build/object directory. | |
238 | ||
239 | If you obtained the sources via CVS, @var{srcdir} must refer to the top | |
240 | @file{gcc} directory, the one where the @file{MAINTAINERS} can be found, | |
241 | and not its @file{gcc} subdirectory, otherwise the build will fail. | |
f42974dc DW |
242 | |
243 | First, we @strong{highly} recommend that GCC be built into a | |
244 | separate directory than the sources which does @strong{not} reside | |
245 | within the source tree. This is how we generally build GCC; building | |
38209993 LG |
246 | where @var{srcdir} == @var{objdir} should still work, but doesn't |
247 | get extensive testing; building where @var{objdir} is a subdirectory | |
248 | of @var{srcdir} is unsupported. | |
f42974dc | 249 | |
38209993 LG |
250 | Second, when configuring a native system, either @command{cc} or |
251 | @command{gcc} must be in your path or you must set @env{CC} in | |
df002c7d DE |
252 | your environment before running configure. Otherwise the configuration |
253 | scripts may fail. | |
f42974dc DW |
254 | |
255 | To configure GCC: | |
256 | ||
257 | @example | |
38209993 LG |
258 | % mkdir @var{objdir} |
259 | % cd @var{objdir} | |
ef88b07d | 260 | % @var{srcdir}/configure [@var{target}] [@var{options}] |
f42974dc DW |
261 | @end example |
262 | ||
263 | ||
ef88b07d | 264 | @heading Target specification |
f42974dc DW |
265 | @itemize @bullet |
266 | @item | |
38209993 | 267 | GCC has code to correctly determine the correct value for @var{target} |
f42974dc DW |
268 | for nearly all native systems. Therefore, we highly recommend you not |
269 | provide a configure target when configuring a native compiler. | |
270 | ||
271 | @item | |
38209993 | 272 | @var{target} must be specified as @option{--target=}@var{target} |
f42974dc DW |
273 | when configuring a cross compiler; examples of valid targets would be |
274 | i960-rtems, m68k-coff, sh-elf, etc. | |
275 | ||
276 | @item | |
38209993 LG |
277 | Specifying just @var{target} instead of @option{--target=}@var{target} |
278 | implies that the host defaults to @var{target}. | |
f42974dc DW |
279 | @end itemize |
280 | ||
281 | ||
ef88b07d | 282 | @heading Options specification |
f42974dc | 283 | |
ef88b07d JM |
284 | Use @var{options} to override several configure time options for |
285 | GCC. A partial list of supported @var{options}: | |
f42974dc | 286 | |
ef88b07d JM |
287 | @table @code |
288 | @item --prefix=@var{dirname} | |
289 | Specify the toplevel installation | |
f42974dc DW |
290 | directory. This is the recommended way to install the tools into a directory |
291 | other than the default. The toplevel installation directory defaults to | |
292 | @code{/usr/local}. | |
293 | ||
38209993 LG |
294 | We @strong{highly} recommend against @var{dirname} being the same or a |
295 | subdirectory of @var{objdir} or vice versa. | |
f42974dc DW |
296 | |
297 | These additional options control where certain parts of the distribution | |
298 | are installed. Normally you should not need to use these options. | |
ef88b07d | 299 | @table @code |
f42974dc | 300 | |
ef88b07d JM |
301 | @item --with-gxx-include-dir=@var{dirname} |
302 | Specify | |
38209993 LG |
303 | the installation directory for g++ header files. The default is |
304 | @file{/usr/local/include/g++}. | |
f42974dc | 305 | |
ef88b07d | 306 | @end table |
f42974dc | 307 | |
ef88b07d JM |
308 | @item --with-local-prefix=@var{dirname} |
309 | Specify the | |
6ac48571 JM |
310 | installation directory for local include files. The default is |
311 | @file{/usr/local}. Specify this option if you want the compiler to | |
312 | search directory @file{@var{dirname}/include} for locally installed | |
313 | header files @emph{instead} of @file{/usr/local/include}. | |
314 | ||
315 | You should specify @option{--with-local-prefix} @strong{only} if your | |
316 | site has a different convention (not @file{/usr/local}) for where to put | |
317 | site-specific files. | |
318 | ||
319 | The default value for @option{--with-local-prefix} is @file{/usr/local} | |
320 | regardless of the value of @option{--prefix}. Specifying | |
321 | @option{--prefix} has no effect on which directory GCC searches for | |
322 | local header files. This may seem counterintuitive, but actually it is | |
323 | logical. | |
324 | ||
325 | The purpose of @option{--prefix} is to specify where to @emph{install | |
326 | GCC}. The local header files in @file{/usr/local/include}---if you put | |
327 | any in that directory---are not part of GCC. They are part of other | |
328 | programs---perhaps many others. (GCC installs its own header files in | |
329 | another directory which is based on the @option{--prefix} value.) | |
330 | ||
331 | @strong{Do not} specify @file{/usr} as the @option{--with-local-prefix}! | |
332 | The directory you use for @option{--with-local-prefix} @strong{must not} | |
333 | contain any of the system's standard header files. If it did contain | |
334 | them, certain programs would be miscompiled (including GNU Emacs, on | |
335 | certain targets), because this would override and nullify the header | |
336 | file corrections made by the @code{fixincludes} script. | |
337 | ||
338 | Indications are that people who use this option use it based on mistaken | |
339 | ideas of what it is for. People use it as if it specified where to | |
340 | install part of GCC. Perhaps they make this assumption because | |
341 | installing GCC creates the directory. | |
342 | ||
ef88b07d JM |
343 | @item --enable-shared |
344 | Build shared versions of the | |
38209993 LG |
345 | C++ runtime libraries if supported. This is the default on most |
346 | systems. Use @option{--disable-shared} for static libraries. Note that | |
347 | up to the gcc version 2.95.x series, static libraries were the default | |
348 | on all systems. | |
f42974dc | 349 | |
ef88b07d JM |
350 | @item @anchor{with-gnu-as}--with-gnu-as |
351 | Specify that the compiler should assume that the | |
38209993 LG |
352 | assembler it finds is the GNU assembler. However, this does not modify |
353 | the rules to find an assembler and will result in confusion if found | |
354 | assembler is not actually the GNU assembler. If you have more than one | |
355 | assembler installed on your system, you may want to use this option in | |
356 | connection with @option{--with-as=@file{/path/to/gas}}. | |
357 | ||
ef88b07d JM |
358 | @item --with-as=@file{/path/to/as} |
359 | Specify that the | |
38209993 LG |
360 | compiler should use the assembler pointed to by @var{pathname}, rather |
361 | than the one found by the standard rules to find an assembler, which | |
362 | are: | |
f42974dc DW |
363 | @itemize @bullet |
364 | @item | |
38209993 LG |
365 | Check the |
366 | @file{@var{exec_prefix}/lib/gcc-lib/@var{target}/@var{version}} | |
367 | directory, where @var{exec_prefix} defaults to @var{prefix} which | |
368 | defaults to @file{/usr/local} unless overridden by the | |
369 | @option{--prefix=/pathname} switch described above. @var{target} is the | |
370 | target system triple, such as @var{sparc-sun-solaris2.7}, and | |
371 | @var{version} denotes the GCC version, such as 2.95.2. | |
f42974dc | 372 | @item |
38209993 LG |
373 | Check operating system specific directories (e.g. @file{/usr/ccs/bin} on |
374 | Sun Solaris). | |
f42974dc | 375 | @end itemize |
38209993 LG |
376 | Note that these rules do not check for the value of @env{PATH}. You may |
377 | want to use @option{--with-as} if no assembler is installed in the | |
378 | directories listed above, or if you have multiple assemblers installed | |
379 | and want to choose one that is not found by the above rules. | |
f42974dc | 380 | |
ef88b07d JM |
381 | @item @anchor{with-gnu-ld}--with-gnu-ld |
382 | Same as @uref{#with-gnu-as,,@option{--with-gnu-as}} | |
38209993 | 383 | but for linker. |
20293b4c | 384 | |
f42974dc | 385 | |
ef88b07d JM |
386 | @item --with-ld=@file{/path/to/ld} |
387 | Same as | |
38209993 | 388 | @option{--with-as}, but for the linker. |
f42974dc | 389 | |
ef88b07d JM |
390 | @item --with-stabs |
391 | Specify that stabs debugging | |
38209993 LG |
392 | information should be used instead of whatever format the host normally |
393 | uses. Normally GCC uses the same debug format as the host system. | |
f42974dc | 394 | |
ef88b07d JM |
395 | @item --enable-multilib |
396 | Specify that multiple target | |
38209993 LG |
397 | libraries should be built to support different target variants, calling |
398 | conventions, etc. This is the default. | |
f42974dc | 399 | |
ef88b07d JM |
400 | @item --enable-threads |
401 | Specify that the target | |
38209993 LG |
402 | supports threads. This affects the Objective-C compiler and runtime |
403 | library, and exception handling for other languages like C++ and Java. | |
6ac48571 | 404 | On some systems, this is the default. |
f42974dc | 405 | |
ef88b07d JM |
406 | @item --enable-threads=@var{lib} |
407 | Specify that | |
38209993 LG |
408 | @var{lib} is the thread support library. This affects the Objective-C |
409 | compiler and runtime library, and exception handling for other languages | |
6ac48571 JM |
410 | like C++ and Java. The possibilities for @var{lib} are @samp{aix}, |
411 | @samp{dce}, @samp{decosf1}, @samp{irix}, @samp{mach}, @samp{os2}, | |
412 | @samp{posix}, @samp{pthreads}, @samp{single}, @samp{solaris}, | |
413 | @samp{vxworks} and @samp{win32}. | |
f42974dc | 414 | |
ef88b07d JM |
415 | @item --with-cpu=@var{cpu} |
416 | Specify which cpu variant the | |
f42974dc DW |
417 | compiler should generate code for by default. This is currently |
418 | only supported on the some ports, specifically arm, powerpc, and | |
419 | SPARC. If configure does not recognize the model name (e.g. arm700, | |
420 | 603e, or ultrasparc) you provide, please check the configure script | |
421 | for a complete list of supported models. | |
422 | ||
ef88b07d JM |
423 | @item --enable-target-optspace |
424 | Specify that target | |
38209993 LG |
425 | libraries should be optimized for code space instead of code speed. |
426 | This is the default for the m32r platform. | |
f42974dc | 427 | |
ef88b07d JM |
428 | @item --enable-cpp |
429 | Specify that a shell script which | |
38209993 | 430 | emulates traditional cpp functionality should be installed. |
f42974dc | 431 | |
ef88b07d JM |
432 | @item --enable-cpplib |
433 | Specify that the functionality of | |
f42974dc DW |
434 | CPP should be integrated into the compiler itself. This option is |
435 | not supported by snapshots since November 2000. In snapshots where | |
436 | it is supported, it is not enabled by default, except for snapshots | |
437 | very close to November 2000. | |
438 | ||
ef88b07d JM |
439 | @item --enable-maintainer-mode |
440 | The build rules that | |
6ac48571 JM |
441 | regenerate the GCC master message catalog @code{gcc.pot} are normally |
442 | disabled. This is because it can only be rebuilt if the complete source | |
443 | tree is present. If you have changed the sources and want to rebuild the | |
444 | catalog, configuring with @option{--enable-maintainer-mode} will enable | |
445 | this. Note that you need a recent version of the @code{gettext} tools | |
446 | to do so. | |
447 | ||
ef88b07d JM |
448 | @item --without-fast-fixincludes |
449 | Specify that the | |
38209993 | 450 | old, slower method of fixing the system header files should be used. |
f42974dc DW |
451 | EGCS 1.1.x and older releases default to the slow version. GCC 2.95 and |
452 | newer releases will default to the fast version. | |
453 | ||
ef88b07d JM |
454 | @item --enable-version-specific-runtime-libs |
455 | Specify | |
38209993 LG |
456 | that runtime libraries should be installed in the compiler specific |
457 | subdirectory (@file{@var{libsubdir}}) rather than the usual places. In | |
458 | addition, libstdc++'s include files will be installed in | |
459 | @file{@var{libsubdir}/include/g++} unless you overruled it by using | |
460 | @option{--with-gxx-include-dir=}@var{dirname}. Using this option is | |
461 | particularly useful if you intend to use several versions of GCC in | |
462 | parallel. This is currently supported by @option{libf2c} and | |
463 | @option{libstdc++}. | |
464 | ||
ef88b07d JM |
465 | @item --enable-languages=@var{lang1},@var{lang2},@dots{} |
466 | Specify that only a particular subset of compilers and | |
38209993 LG |
467 | their runtime libraries should be built. For a list of valid values for |
468 | @var{lang}@option{x} you can issue the following command in the | |
469 | @file{gcc} directory of your GCC source tree:@* @samp{grep language= | |
470 | */config-lang.in}@* Currently, you can use any of the following: | |
471 | @code{c++}, @code{f77}, @code{java} and @code{objc}. | |
f42974dc DW |
472 | @code{CHILL} is not currently maintained, and will almost |
473 | certainly fail to compile. Note that this switch does not work with | |
474 | EGCS 1.1.2 or older versions of egcs. It is supported in GCC 2.95 | |
475 | and newer versions.@* | |
38209993 LG |
476 | If you do not pass this flag, all languages available in the @file{gcc} |
477 | sub-tree will be configured. Re-defining LANGUAGES when calling | |
ef88b07d | 478 | @samp{make bootstrap} @strong{does not} work anymore, as those |
38209993 | 479 | language sub-directories might not have been configured! |
f42974dc | 480 | |
ef88b07d JM |
481 | @item --disable-libgcj |
482 | Specify that the run-time libraries | |
f42974dc DW |
483 | used by GCJ should not be built. This is useful in case you intend |
484 | to use GCJ with some other run-time, or you're going to install it | |
485 | separately, or it just happens not to build on your particular | |
486 | machine. In general, if the Java front-end is enabled, the GCJ | |
487 | libraries will be enabled too, unless they're known to not work on | |
488 | the target platform. If GCJ is enabled but libgcj isn't built, you | |
489 | may need to port it; in this case, before modifying the top-level | |
490 | configure.in so that libgcj is enabled by default on this platform, | |
491 | you may use @option{--enable-libgcj} to override the default. | |
492 | ||
ef88b07d JM |
493 | @item --with-dwarf2 |
494 | Specify that the compiler should | |
38209993 | 495 | use DWARF2 debugging information as the default. |
ef88b07d | 496 | @end table |
f42974dc DW |
497 | |
498 | Some options which only apply to building cross compilers: | |
ef88b07d JM |
499 | @table @code |
500 | @item --with-headers=@var{dir} | |
501 | Specifies a directory | |
38209993 | 502 | which has target include files. |
f42974dc | 503 | @emph{This options is required} when building a cross |
38209993 LG |
504 | compiler, if @file{@var{prefix}/@var{target}/sys-include} doesn't pre-exist. |
505 | These include files will be copied into the @file{gcc} install directory. | |
506 | Fixincludes will be run on these files to make them compatible with | |
507 | @command{gcc}. | |
ef88b07d | 508 | @item --with-libs=``@var{dir1} @var{dir2} @dots{} @var{dirN}'' |
38209993 LG |
509 | Specifies a list of directories which contain the target runtime |
510 | libraries. These libraries will be copied into the @file{gcc} install | |
511 | directory. | |
ef88b07d JM |
512 | @item --with-newlib |
513 | Specifies that ``newlib'' is | |
38209993 LG |
514 | being used as the target C library. This causes @code{__eprintf} to be |
515 | omitted from libgcc.a on the assumption that it will be provided by | |
516 | newlib. | |
ef88b07d | 517 | @end table |
f42974dc | 518 | |
38209993 LG |
519 | Note that each @option{--enable} option has a corresponding |
520 | @option{--disable} option and that each @option{--with} option has a | |
521 | corresponding @option{--without} option. | |
f42974dc DW |
522 | |
523 | @html | |
524 | <hr> | |
525 | <p> | |
526 | @end html | |
527 | @ifhtml | |
528 | @uref{./index.html,,Return to the GCC Installation page} | |
529 | @end ifhtml | |
530 | @end ifset | |
531 | ||
532 | @c ***Building**************************************************************** | |
533 | @ifinfo | |
534 | @comment node-name, next, previous, up | |
535 | @node Building, Testing, Configuration, Installing GCC | |
536 | @end ifinfo | |
537 | @ifset buildhtml | |
538 | @html | |
539 | <h1 align="center">Installing GCC: Building</h1> | |
540 | @end html | |
541 | @ifnothtml | |
542 | @chapter Building | |
543 | @end ifnothtml | |
544 | @cindex Installing GCC: Building | |
545 | ||
546 | Now that GCC is configured, you are ready to build the compiler and | |
547 | runtime libraries. | |
548 | ||
549 | We @strong{highly} recommend that GCC be built using GNU make; | |
550 | other versions may work, then again they might not. | |
551 | ||
552 | (For example, many broken versions of make will fail if you use the | |
b8df899a JM |
553 | recommended setup where @var{objdir} is different from @var{srcdir}. |
554 | Other broken versions may recompile parts of the compiler when | |
555 | installing the compiler.) | |
f42974dc | 556 | |
b8df899a JM |
557 | Some commands executed when making the compiler may fail (return a |
558 | non-zero status) and be ignored by @code{make}. These failures, which | |
559 | are often due to files that were not found, are expected, and can safely | |
560 | be ignored. | |
561 | ||
562 | It is normal to have compiler warnings when compiling certain files. | |
563 | Unless you are a GCC developer, you can generally ignore these warnings | |
564 | unless they cause compilation to fail. | |
565 | ||
566 | On certain old systems, defining certain environment variables such as | |
567 | @code{CC} can interfere with the functioning of @code{make}. | |
568 | ||
569 | If you encounter seemingly strange errors when trying to build the | |
570 | compiler in a directory other than the source directory, it could be | |
571 | because you have previously configured the compiler in the source | |
572 | directory. Make sure you have done all the necessary preparations. | |
573 | ||
574 | If you build GCC on a BSD system using a directory stored in an old System | |
575 | V file system, problems may occur in running @code{fixincludes} if the | |
576 | System V file system doesn't support symbolic links. These problems | |
577 | result in a failure to fix the declaration of @code{size_t} in | |
578 | @file{sys/types.h}. If you find that @code{size_t} is a signed type and | |
579 | that type mismatches occur, this could be the cause. | |
580 | ||
581 | The solution is not to use such a directory for building GCC. | |
f42974dc DW |
582 | |
583 | @section Building a native compiler | |
584 | ||
38209993 | 585 | For a native build issue the command @samp{make bootstrap}. This |
f42974dc DW |
586 | will build the entire GCC system, which includes the following steps: |
587 | ||
588 | @itemize @bullet | |
589 | @item | |
590 | Build host tools necessary to build the compiler such as texinfo, bison, | |
591 | gperf. | |
592 | ||
593 | @item | |
594 | Build target tools for use by the compiler such as binutils (bfd, | |
595 | binutils, gas, gprof, ld, and opcodes)@* | |
596 | if they have been individually linked | |
597 | or moved into the top level GCC source tree before configuring. | |
598 | ||
599 | @item | |
600 | Perform a 3-stage bootstrap of the compiler. | |
601 | ||
602 | @item | |
603 | Perform a comparison test of the stage2 and stage3 compilers. | |
604 | ||
605 | @item | |
606 | Build runtime libraries using the stage3 compiler from the previous step. | |
607 | ||
608 | @end itemize | |
609 | ||
38209993 LG |
610 | If you are short on disk space you might consider @samp{make |
611 | bootstrap-lean} instead. This is identical to @samp{make | |
612 | bootstrap} except that object files from the stage1 and | |
f42974dc DW |
613 | stage2 of the 3-stage bootstrap of the compiler are deleted as |
614 | soon as they are no longer needed. | |
615 | ||
616 | ||
617 | If you want to save additional space during the bootstrap and in | |
618 | the final installation as well, you can build the compiler binaries | |
38209993 LG |
619 | without debugging information with @samp{make CFLAGS='-O' LIBCFLAGS='-g |
620 | -O2' LIBCXXFLAGS='-g -O2 -fno-implicit-templates' bootstrap}. This will save | |
f42974dc DW |
621 | roughly 40% of disk space both for the bootstrap and the final installation. |
622 | (Libraries will still contain debugging information.) | |
623 | ||
38209993 | 624 | If you used the flag @option{--enable-languages=...} to restrict |
f42974dc DW |
625 | the compilers to be built, only those you've actually enabled will be |
626 | built. This will of course only build those runtime libraries, for | |
627 | which the particular compiler has been built. Please note, | |
38209993 | 628 | that re-defining LANGUAGES when calling @samp{make bootstrap} |
ef88b07d | 629 | @strong{does not} work anymore! |
f42974dc DW |
630 | |
631 | ||
632 | @section Building a cross compiler | |
633 | ||
634 | We recommend reading the | |
635 | @uref{http://www.objsw.com/CrossGCC/,,crossgcc FAQ} | |
636 | for information about building cross compilers. | |
637 | ||
638 | When building a cross compiler, it is not generally possible to do a | |
639 | 3-stage bootstrap of the compiler. This makes for an interesting problem | |
640 | as parts of GCC can only be built with GCC. | |
641 | ||
642 | To build a cross compiler, we first recommend building and installing a | |
643 | native compiler. You can then use the native GCC compiler to build the | |
644 | cross compiler. | |
645 | ||
646 | Assuming you have already installed a native copy of GCC and configured | |
38209993 | 647 | your cross compiler, issue the command @samp{make}, which performs the |
f42974dc DW |
648 | following steps: |
649 | ||
650 | @itemize @bullet | |
651 | @item | |
652 | Build host tools necessary to build the compiler such as texinfo, bison, | |
653 | gperf. | |
654 | ||
655 | @item | |
656 | Build target tools for use by the compiler such as binutils (bfd, | |
657 | binutils, gas, gprof, ld, and opcodes) | |
658 | if they have been individually linked or moved into the top level GCC source | |
659 | tree before configuring. | |
660 | ||
661 | @item | |
662 | Build the compiler (single stage only). | |
663 | ||
664 | @item | |
665 | Build runtime libraries using the compiler from the previous step. | |
666 | @end itemize | |
667 | ||
668 | Note that if an error occurs in any step the make process will exit. | |
669 | ||
670 | @section Building in parallel | |
671 | ||
38209993 LG |
672 | If you have a multiprocessor system you can use @samp{make bootstrap |
673 | MAKE="make -j 2" -j 2} or just @samp{make -j 2 bootstrap} | |
674 | for GNU Make 3.79 and above instead of just @samp{make bootstrap} | |
f42974dc DW |
675 | when building GCC. You can use a bigger number instead of two if |
676 | you like. In most cases, it won't help to use a number bigger than | |
677 | the number of processors in your machine. | |
678 | ||
679 | @html | |
680 | <hr> | |
681 | <p> | |
682 | @end html | |
683 | @ifhtml | |
684 | @uref{./index.html,,Return to the GCC Installation page} | |
685 | @end ifhtml | |
686 | @end ifset | |
687 | ||
688 | @c ***Testing***************************************************************** | |
689 | @ifinfo | |
690 | @comment node-name, next, previous, up | |
691 | @node Testing, Final install, Building, Installing GCC | |
692 | @end ifinfo | |
693 | @ifset testhtml | |
694 | @html | |
695 | <h1 align="center">Installing GCC: Testing</h1> | |
696 | @end html | |
697 | @ifnothtml | |
698 | @chapter Installing GCC: Testing | |
699 | @end ifnothtml | |
700 | @cindex Testing | |
701 | @cindex Installing GCC: Testing | |
702 | @cindex Testsuite | |
703 | ||
704 | @strong{Please note that this is only applicable | |
705 | to current development versions of GCC and GCC 3.0 or later. | |
706 | GCC 2.95.x does not come with a testsuite.} | |
707 | ||
708 | Before you install GCC, you might wish to run the testsuite. This | |
709 | step is optional and may require you to download additional software. | |
710 | ||
711 | First, you must have @uref{download.html,,downloaded the testsuites}. | |
712 | The full distribution contains testsuites; only if you downloaded the | |
713 | ``core'' compiler plus any front ends, you do not have the testsuites. | |
714 | ||
715 | Second, you must have a @uref{http://www.gnu.org/software/dejagnu/,,current version of DejaGnu} installed; | |
716 | dejagnu 1.3 is not sufficient. | |
717 | ||
718 | Now you may need specific preparations: | |
719 | ||
720 | @itemize @bullet | |
721 | @item | |
722 | In order to run the libio tests on targets which do not fully | |
723 | support Unix/POSIX commands (e.g. Cygwin), the references to the dbz | |
724 | directory have to be deleted from @code{libio/configure.in}. | |
725 | ||
726 | @item | |
727 | The following environment variables must be set appropriately, as in | |
728 | the following example (which assumes that DejaGnu has been installed | |
729 | under @code{/usr/local}): | |
730 | ||
731 | @example | |
732 | TCL_LIBRARY = /usr/local/share/tcl8.0 | |
733 | DEJAGNULIBS = /usr/local/share/dejagnu | |
734 | @end example | |
735 | ||
736 | On systems such as Cygwin, these paths are required to be actual | |
737 | paths, not mounts or links; presumably this is due to some lack of | |
738 | portability in the DejaGnu code. | |
739 | ||
740 | @end itemize | |
741 | ||
742 | Finally, you can run the testsuite (which may take a long time): | |
743 | @example | |
ef88b07d | 744 | cd @var{objdir}; make -k check |
f42974dc DW |
745 | @end example |
746 | ||
747 | The testing process will try to test as many components in the GCC | |
748 | distribution as possible, including the C, C++ and Fortran compilers as | |
749 | well as the C++ runtime libraries. | |
750 | ||
751 | @section How can I run the test suite on selected tests? | |
752 | ||
753 | As a first possibility to cut down the number of tests that are run it is | |
38209993 | 754 | possible to use @samp{make check-gcc} or @samp{make check-g++} |
f42974dc DW |
755 | in the gcc subdirectory of the object directory. To further cut down the |
756 | tests the following is possible: | |
757 | ||
758 | @example | |
759 | make check-gcc RUNTESTFLAGS="execute.exp <other options>" | |
760 | @end example | |
761 | ||
762 | This will run all gcc execute tests in the testsuite. | |
763 | ||
764 | @example | |
765 | make check-g++ RUNTESTFLAGS="old-deja.exp=9805* <other options>" | |
766 | @end example | |
767 | ||
768 | This will run the g++ "old-deja" tests in the testsuite where the filename | |
769 | matches 9805*. | |
770 | ||
771 | The *.exp files are located in the testsuite directories of the GCC | |
772 | source, the most important ones being compile.exp, execute.exp, dg.exp | |
773 | and old-deja.exp. To get a list of the possible *.exp files, pipe the | |
38209993 LG |
774 | output of @samp{make check} into a file and look at the |
775 | @samp{Running ... .exp} lines. | |
f42974dc DW |
776 | |
777 | @section How to interpret test results | |
778 | ||
779 | After the testsuite has run you'll find various *.sum and *.log | |
780 | files in the testsuite subdirectories. The *.log files contain a | |
781 | detailed log of the compiler invocations and the corresponding | |
782 | results, the *.sum files summarize the results. These summaries list | |
783 | all the tests that have been run with a corresponding status code: | |
784 | ||
785 | @itemize @bullet | |
786 | @item | |
787 | PASS: the test passed as expected | |
788 | @item | |
789 | XPASS: the test unexpectedly passed | |
790 | @item | |
791 | FAIL: the test unexpectedly failed | |
792 | @item | |
793 | XFAIL: the test failed as expected | |
794 | @item | |
795 | UNSUPPORTED: the test is not supported on this platform | |
796 | @item | |
797 | ERROR: the testsuite detected an error | |
798 | @item | |
799 | WARNING: the testsuite detected a possible problem | |
800 | @end itemize | |
801 | ||
38209993 LG |
802 | It is normal for some tests to report unexpected failures. At the |
803 | current time our testing harness does not allow fine grained control | |
804 | over whether or not a test is expected to fail. We expect to fix this | |
805 | problem in future releases. | |
f42974dc DW |
806 | |
807 | ||
808 | @section Submitting test results | |
809 | ||
810 | If you want to report the results to the GCC project, use the | |
ef88b07d | 811 | @code{contrib/test_summary} shell script. Start it in the @var{objdir} with |
f42974dc DW |
812 | |
813 | @example | |
ef88b07d | 814 | @var{srcdir}/contrib/test_summary -p your_commentary.txt -m gcc-testresults@@gcc.gnu.org |sh |
f42974dc DW |
815 | @end example |
816 | ||
817 | This script uses the @code{Mail} program to send the results, so | |
818 | make sure it is in your @env{PATH}. The file @file{your_commentary.txt} is | |
819 | prepended to the testsuite summary and should contain any special | |
820 | remarks you have on your results or your build environment. Please | |
821 | do not edit the testsuite result block or the subject line, as these | |
822 | messages are automatically parsed and presented at the | |
823 | @uref{http://gcc.gnu.org/testresults/,,GCC testresults} web | |
824 | page. Here you can also gather information on how specific tests | |
825 | behave on different platforms and compare them with your results. A | |
826 | few failing testcases are possible even on released versions and you | |
827 | should look here first if you think your results are unreasonable. | |
828 | ||
829 | @end ifset | |
830 | ||
831 | @c ***Final install*********************************************************** | |
832 | @ifinfo | |
833 | @comment node-name, next, previous, up | |
834 | @node Final install, , Testing, Installing GCC | |
835 | @end ifinfo | |
836 | @ifset finalinstallhtml | |
837 | @html | |
838 | <h1 align="center">Installing GCC: Final installation</h1> | |
839 | @end html | |
840 | @ifnothtml | |
841 | @chapter Installing GCC: Final installation | |
842 | @end ifnothtml | |
843 | ||
844 | Now that GCC has been built and tested, you can install it with | |
ef88b07d JM |
845 | @samp{cd @var{objdir}; make install} for a native compiler or |
846 | @samp{cd @var{objdir}; make install LANGUAGES="c c++"} for | |
f42974dc DW |
847 | a cross compiler (note installing cross compilers will be easier in the |
848 | next release!). | |
849 | ||
850 | That step completes the installation of GCC; user level binaries can | |
38209993 LG |
851 | be found in @file{@var{prefix}/bin} where @var{prefix} is the value you |
852 | specified with the @option{--prefix} to configure (or @file{/usr/local} | |
853 | by default). | |
f42974dc DW |
854 | |
855 | If you don't mind, please quickly review the | |
856 | @uref{http://gcc.gnu.org/gcc-2.95/buildstat.html,,build status page}. | |
857 | If your system is not listed, send a note to | |
858 | @uref{mailto:gcc@@gcc.gnu.org,,gcc@@gcc.gnu.org} indicating | |
859 | that you successfully built and installed GCC. | |
860 | ||
38209993 | 861 | Include the output from running @file{@var{srcdir}/config.guess}. (Do not |
f42974dc DW |
862 | send us the config.guess file itself, just the output from running |
863 | it!) | |
864 | ||
865 | If you find a bug, please report it following our | |
866 | @uref{../bugs.html,,bug reporting guidelines}. | |
867 | ||
868 | @html | |
869 | <hr> | |
870 | <p> | |
871 | @end html | |
872 | @ifhtml | |
873 | @uref{./index.html,,Return to the GCC Installation page} | |
874 | @end ifhtml | |
875 | @end ifset | |
876 | ||
877 | @c ***Binaries**************************************************************** | |
878 | @ifinfo | |
879 | @comment node-name, next, previous, up | |
880 | @node Binaries, Specific, Installing GCC, Top | |
881 | @end ifinfo | |
882 | @ifset binarieshtml | |
883 | @html | |
884 | <h1 align="center">Installing GCC: Binaries</h1> | |
885 | @end html | |
886 | @ifnothtml | |
887 | @chapter Installing GCC: Binaries | |
888 | @end ifnothtml | |
889 | @cindex Binaries | |
890 | @cindex Installing GCC: Binaries | |
891 | ||
892 | We are often asked about pre-compiled versions of GCC. While we cannot | |
893 | provide these for all platforms, below you'll find links to binaries for | |
894 | various platforms where creating them by yourself is not easy due to various | |
895 | reasons. | |
896 | ||
897 | Please note that we did not create these binaries, nor do we | |
898 | support them. If you have any problems installing them, please | |
899 | contact their makers. | |
900 | ||
901 | @itemize | |
902 | @item | |
df002c7d DE |
903 | AIX: |
904 | @itemize | |
905 | @item | |
38209993 LG |
906 | @uref{http://www-frec.bull.com/docs/download.htm,,Bull's Freeware and |
907 | Shareware Archive for AIX}; | |
df002c7d DE |
908 | |
909 | @item | |
910 | @uref{http://aixpdlib.seas.ucla.edu,,UCLA Software Library for AIX}; | |
911 | @end itemize | |
f42974dc DW |
912 | |
913 | @item | |
914 | DOS - @uref{http://www.delorie.com/djgpp/,,DJGPP}; | |
915 | ||
916 | @item | |
917 | @uref{http://hpux.cae.wisc.edu/,,HP-UX Porting Center}; | |
918 | ||
919 | @item | |
38209993 LG |
920 | @uref{http://www.sco.com/skunkware/devtools/index.html#gcc,,SCO |
921 | OpenServer/Unixware}; | |
f42974dc DW |
922 | |
923 | @item | |
924 | Solaris (SPARC, Intel) - @uref{http://www.sunfreeware.com/,,Sunfreeware}; | |
925 | ||
926 | @item | |
927 | SGI - @uref{http://freeware.sgi.com/,,SGI Freeware}; | |
928 | ||
929 | @item | |
930 | Windows 95, 98, and NT: | |
931 | @itemize | |
932 | @item | |
933 | The @uref{http://sources.redhat.com/cygwin/,,Cygwin} project; | |
934 | @item | |
935 | @uref{http://www.xraylith.wisc.edu/~khan/software/gnu-win32/,,GNU Win32} | |
936 | related projects by Mumit Khan. | |
937 | @end itemize | |
938 | ||
939 | @item | |
940 | @uref{ftp://ftp.thewrittenword.com/packages/free/by-name/gcc-2.95.2/,,The | |
941 | Written Word} offers binaries for Solaris 2.5.1, 2.6, 2.7/SPARC, 2.7/Intel, | |
942 | IRIX 6.2, 6.5, Digital UNIX 4.0D, HP-UX 10.20, and HP-UX 11.00. | |
943 | ||
944 | @item | |
945 | Hitachi H8/300[HS] - | |
946 | @uref{http://h8300-hms.sourceforge.net/,,GNU Development Tools for the | |
947 | Hitachi H8/300[HS] Series} | |
948 | ||
949 | @end itemize | |
950 | ||
951 | In addition to those specific offerings, you can get a binary | |
952 | distribution CD-ROM from the | |
953 | @uref{http://www.fsf.org/order/order.html,,Free Software Foundation}. | |
954 | It contains binaries for a number of platforms, and | |
955 | includes not only GCC, but other stuff as well. The current CD does | |
956 | not contain the latest version of GCC, but it should allow | |
957 | bootstrapping the compiler. An updated version of that disk is in the | |
958 | works. | |
959 | ||
960 | @html | |
961 | <hr> | |
962 | <p> | |
963 | @end html | |
964 | @ifhtml | |
965 | @uref{./index.html,,Return to the GCC Installation page} | |
966 | @end ifhtml | |
967 | @end ifset | |
968 | ||
969 | @c ***Specific**************************************************************** | |
970 | @ifinfo | |
971 | @comment node-name, next, previous, up | |
972 | @node Specific, Concept Index, Binaries, Top | |
973 | @end ifinfo | |
974 | @ifset specifichtml | |
975 | @html | |
976 | <h1 align="center">Host/target specific installation notes for GCC</h1> | |
977 | @end html | |
978 | @ifnothtml | |
979 | @chapter Host/target specific installation notes for GCC | |
980 | @end ifnothtml | |
981 | @cindex Specific | |
982 | @cindex Specific installation notes | |
983 | @cindex Target specific installation | |
984 | @cindex Host specific installation | |
985 | @cindex Target specific installation notes | |
986 | ||
987 | Please read this document carefully @emph{before} installing the | |
988 | GNU Compiler Collection on your machine. | |
989 | ||
ef88b07d | 990 | @ifhtml |
f42974dc DW |
991 | @itemize |
992 | @item | |
b8df899a JM |
993 | @uref{#1750a-*-*,,1750a-*-*} |
994 | @item | |
995 | @uref{#a29k,,a29k} | |
996 | @item | |
997 | @uref{#a29k-*-bsd,,a29k-*-bsd} | |
998 | @item | |
f42974dc DW |
999 | @uref{#alpha*-dec-linux*,,alpha*-dec-linux*} |
1000 | @item | |
b8df899a JM |
1001 | @uref{#alpha-*-osf1,,alpha-*-osf1} |
1002 | @item | |
f42974dc DW |
1003 | @uref{#alpha*-dec-osf*,,alpha*-dec-osf*} |
1004 | @item | |
b8df899a JM |
1005 | @uref{#arc-*-elf,,arc-*-elf} |
1006 | @item | |
1007 | @uref{#arm-*-aout,,arm-*-aout} | |
1008 | @item | |
1009 | @uref{#arm-*-elf,,arm-*-elf} | |
1010 | @item | |
476c334e PB |
1011 | @uref{#arm*-*-linux-gnu,,arm*-*-linux-gnu} |
1012 | @item | |
b8df899a JM |
1013 | @uref{#arm-*-riscix,,arm-*-riscix} |
1014 | @item | |
f42974dc DW |
1015 | @uref{#avr,,avr} |
1016 | @item | |
b8df899a JM |
1017 | @uref{#decstation-*,,decstation-*} |
1018 | @item | |
f42974dc DW |
1019 | @uref{#dos,,DOS} |
1020 | @item | |
b8df899a JM |
1021 | @uref{#dsp16xx,,dsp16xx} |
1022 | @item | |
1023 | @uref{#elxsi-elxsi-bsd,,elxsi-elxsi-bsd} | |
1024 | @item | |
f42974dc DW |
1025 | @uref{#h8300-hms,,h8300-hms} |
1026 | @item | |
1027 | @uref{#hppa*-hp-hpux*,,hppa*-hp-hpux*} | |
1028 | @item | |
1029 | @uref{#hppa*-hp-hpux9,,hppa*-hp-hpux9} | |
1030 | @item | |
1031 | @uref{#hppa*-hp-hpux10,,hppa*-hp-hpux10} | |
1032 | @item | |
1033 | @uref{#hppa*-hp-hpux11,,hppa*-hp-hpux11} | |
1034 | @item | |
b8df899a JM |
1035 | @uref{#i370-*-*,,i370-*-*} |
1036 | @item | |
f42974dc DW |
1037 | @uref{#*-*-linux-gnu,,*-*-linux-gnu} |
1038 | @item | |
b8df899a JM |
1039 | @uref{#ix86-*-linux*oldld,,i?86-*-linux*oldld} |
1040 | @item | |
1041 | @uref{#ix86-*-linux*aout,,i?86-*-linux*aout} | |
1042 | @item | |
f42974dc DW |
1043 | @uref{#ix86-*-linux*,,i?86-*-linux*} |
1044 | @item | |
b8df899a JM |
1045 | @uref{#ix86-*-sco,,i?86-*-sco} |
1046 | @item | |
1047 | @uref{#ix86-*-sco3.2v4,,i?86-*-sco3.2v4} | |
1048 | @item | |
f42974dc DW |
1049 | @uref{#ix86-*-sco3.2v5*,,i?86-*-sco3.2v5*} |
1050 | @item | |
1051 | @uref{#ix86-*-solaris*,,i?86-*-solaris*} | |
1052 | @item | |
1053 | @uref{#ix86-*-udk,,i?86-*-udk} | |
1054 | @item | |
b8df899a JM |
1055 | @uref{#ix86-*-isc,,i?86-*-isc} |
1056 | @item | |
1057 | @uref{#ix86-*-esix,,i?86-*-esix} | |
1058 | @item | |
1059 | @uref{#ix86-ibm-aix,,i?86-ibm-aix} | |
1060 | @item | |
1061 | @uref{#ix86-sequent-bsd,,i?86-sequent-bsd} | |
1062 | @item | |
1063 | @uref{#ix86-sequent-ptx1*,,i?86-sequent-ptx1*, i?86-sequent-ptx2*} | |
1064 | @item | |
1065 | @uref{#ix86-*-sysv3*,,i?86-*-sysv3*} | |
1066 | @item | |
1067 | @uref{#i860-intel-osf*,,i860-intel-osf*} | |
1068 | @item | |
1069 | @uref{#*-lynx-lynxos,,*-lynx-lynxos} | |
1070 | @item | |
f42974dc DW |
1071 | @uref{#*-ibm-aix*,,*-ibm-aix*} |
1072 | @item | |
b8df899a JM |
1073 | @uref{#m32r-*-elf,,m32r-*-elf} |
1074 | @item | |
1075 | @uref{#m68000-hp-bsd,,m68000-hp-bsd} | |
1076 | @item | |
1077 | @uref{#m6811-elf,,m6811-elf} | |
1078 | @item | |
1079 | @uref{#m6812-elf,,m6812-elf} | |
1080 | @item | |
1081 | @uref{#m68k-altos,,m68k-altos} | |
1082 | @item | |
1083 | @uref{#m68k-apple-aux,,m68k-apple-aux} | |
1084 | @item | |
1085 | @uref{#m68k-att-sysv,,m68k-att-sysv} | |
1086 | @item | |
1087 | @uref{#m68k-bull-sysv,,m68k-bull-sysv} | |
1088 | @item | |
1089 | @uref{#m68k-crds-unox,,m68k-crds-unox} | |
1090 | @item | |
1091 | @uref{#m68k-hp-hpux,,m68k-hp-hpux} | |
1092 | @item | |
f42974dc DW |
1093 | @uref{#m68k-*-nextstep*,,m68k-*-nextstep*} |
1094 | @item | |
b8df899a JM |
1095 | @uref{#m68k-ncr-*,,m68k-ncr-*} |
1096 | @item | |
1097 | @uref{#m68k-sun,,m68k-sun} | |
1098 | @item | |
f42974dc DW |
1099 | @uref{#m68k-sun-sunos4.1.1,,m68k-sun-sunos4.1.1} |
1100 | @item | |
b8df899a JM |
1101 | @uref{#m88k-*-svr3,,m88k-*-svr3} |
1102 | @item | |
1103 | @uref{#m88k-*-dgux,,m88k-*-dgux} | |
1104 | @item | |
1105 | @uref{#m88k-tektronix-sysv3,,m88k-tektronix-sysv3} | |
1106 | @item | |
1107 | @uref{#mips-*-*,,mips-*-*} | |
1108 | @item | |
1109 | @uref{#mips-mips-bsd,,mips-mips-bsd} | |
1110 | @item | |
1111 | @uref{#mips-mips-riscos*,,mips-mips-riscos*} | |
1112 | @item | |
f42974dc DW |
1113 | @uref{#mips*-sgi-irix[45],,mips*-sgi-irix[45]} |
1114 | @item | |
1115 | @uref{#mips*-sgi-irix6,,mips*-sgi-irix6} | |
1116 | @item | |
b8df899a JM |
1117 | @uref{#mips-sony-sysv,,mips-sony-sysv} |
1118 | @item | |
1119 | @uref{#ns32k-encore,,ns32k-encore} | |
1120 | @item | |
1121 | @uref{#ns32k-*-genix,,ns32k-*-genix} | |
1122 | @item | |
1123 | @uref{#ns32k-sequent,,ns32k-sequent} | |
1124 | @item | |
1125 | @uref{#ns32k-utek,,ns32k-utek} | |
1126 | @item | |
b8df899a JM |
1127 | @uref{#powerpc-*-elf,,powerpc-*-elf, powerpc-*-sysv4} |
1128 | @item | |
f42974dc DW |
1129 | @uref{#powerpc-*-linux-gnu*,,powerpc-*-linux-gnu*} |
1130 | @item | |
b8df899a JM |
1131 | @uref{#powerpc-*-eabiaix,,powerpc-*-eabiaix} |
1132 | @item | |
1133 | @uref{#powerpc-*-eabisim,,powerpc-*-eabisim} | |
1134 | @item | |
1135 | @uref{#powerpc-*-eabi,,powerpc-*-eabi} | |
1136 | @item | |
1137 | @uref{#powerpcle-*-elf,,powerpcle-*-elf, powerpcle-*-sysv4} | |
1138 | @item | |
1139 | @uref{#powerpcle-*-eabisim,,powerpcle-*-eabisim} | |
1140 | @item | |
1141 | @uref{#powerpcle-*-eabi,,powerpcle-*-eabi} | |
1142 | @item | |
1143 | @uref{#powerpcle-*-winnt,,powerpcle-*-winnt, powerpcle-*-pe} | |
1144 | @item | |
1145 | @uref{#romp-*-aos,,romp-*-aos, romp-*-mach} | |
1146 | @item | |
f42974dc DW |
1147 | @uref{#*-*-solaris*,,*-*-solaris*} |
1148 | @item | |
b8df899a JM |
1149 | @uref{#sparc-sun-*,,sparc-sun-*} |
1150 | @item | |
f42974dc DW |
1151 | @uref{#sparc-sun-solaris*,,sparc-sun-solaris*} |
1152 | @item | |
1153 | @uref{#sparc-sun-solaris2.7,,sparc-sun-solaris2.7} | |
1154 | @item | |
1155 | @uref{#*-sun-solaris2.8,,*-sun-solaris2.8} | |
1156 | @item | |
1157 | @uref{#sunv5,,Sun V5.0 Compiler Bugs} | |
1158 | @item | |
1159 | @uref{#sparc-sun-sunos*,,sparc-sun-sunos*} | |
1160 | @item | |
1161 | @uref{#sparc-unknown-linux-gnulibc1,,sparc-unknown-linux-gnulibc1} | |
1162 | @item | |
1163 | @uref{#sparc64-*-*,,sparc64-*-*} | |
1164 | @item | |
b8df899a JM |
1165 | @uref{#*-*-sysv*,,*-*-sysv*} |
1166 | @item | |
1167 | @uref{#vax-dec-ultrix,,vax-dec-ultrix} | |
1168 | @item | |
1169 | @uref{#we32k-*-*,,we32k-*-*} | |
1170 | @item | |
f42974dc DW |
1171 | @uref{#windows,,Microsoft Windows} |
1172 | @item | |
1173 | @uref{#os2,,OS/2} | |
1174 | @item | |
1175 | @uref{#older,,Older systems} | |
1176 | @end itemize | |
1177 | ||
1178 | @itemize | |
1179 | @item | |
1180 | @uref{#elf_targets,,all ELF targets} (SVR4, Solaris, etc.) | |
1181 | @end itemize | |
ef88b07d | 1182 | @end ifhtml |
f42974dc DW |
1183 | |
1184 | ||
1185 | @html | |
1186 | <!-- -------- host/target specific issues start here ---------------- --> | |
1187 | <hr> | |
f42974dc | 1188 | @end html |
b8df899a JM |
1189 | @heading @anchor{1750a-*-*}1750a-*-* |
1190 | MIL-STD-1750A processors. | |
1191 | ||
1192 | The MIL-STD-1750A cross configuration produces output for | |
1193 | @code{as1750}, an assembler/linker available under the GNU Public | |
1194 | License for the 1750A. @code{as1750} can be obtained at | |
1195 | @uref{ftp://ftp.fta-berlin.de/pub/crossgcc/1750gals/}. | |
1196 | A similarly licensed simulator for | |
1197 | the 1750A is available from same address. | |
1198 | ||
1199 | You should ignore a fatal error during the building of libgcc (libgcc is | |
1200 | not yet implemented for the 1750A.) | |
1201 | ||
1202 | The @code{as1750} assembler requires the file @file{ms1750.inc}, which is | |
1203 | found in the directory @file{config/1750a}. | |
1204 | ||
1205 | GNU CC produced the same sections as the Fairchild F9450 C Compiler, | |
1206 | namely: | |
1207 | ||
1208 | @table @code | |
1209 | @item Normal | |
1210 | The program code section. | |
1211 | ||
1212 | @item Static | |
1213 | The read/write (RAM) data section. | |
1214 | ||
1215 | @item Konst | |
1216 | The read-only (ROM) constants section. | |
1217 | ||
1218 | @item Init | |
1219 | Initialization section (code to copy KREL to SREL). | |
1220 | @end table | |
1221 | ||
1222 | The smallest addressable unit is 16 bits (BITS_PER_UNIT is 16). This | |
1223 | means that type `char' is represented with a 16-bit word per character. | |
1224 | The 1750A's "Load/Store Upper/Lower Byte" instructions are not used by | |
1225 | GNU CC. | |
1226 | ||
1227 | @html | |
1228 | </p> | |
1229 | <hr> | |
1230 | @end html | |
1231 | @heading @anchor{a29k}a29k | |
1232 | AMD Am29k-family processors. These are normally used in embedded | |
1233 | applications. There are no standard Unix configurations. | |
1234 | This configuration | |
1235 | corresponds to AMD's standard calling sequence and binary interface | |
1236 | and is compatible with other 29k tools. | |
1237 | ||
1238 | You may need to make a variant of the file @file{a29k.h} for your | |
1239 | particular configuration. | |
1240 | ||
1241 | @html | |
1242 | </p> | |
1243 | <hr> | |
1244 | @end html | |
1245 | @heading @anchor{a29k-*-bsd}a29k-*-bsd | |
1246 | AMD Am29050 used in a system running a variant of BSD Unix. | |
1247 | ||
1248 | @html | |
1249 | </p> | |
1250 | <hr> | |
1251 | @end html | |
ef88b07d | 1252 | @heading @anchor{alpha*-dec-linux*}alpha*-dec-linux* |
f42974dc | 1253 | |
75f3e3c8 RH |
1254 | We require binutils 2.11 or newer. Previous binutils releases |
1255 | had a number of problems with DWARF2 debugging information, not | |
1256 | the least of which is incorrect linking of shared libraries. | |
f42974dc | 1257 | |
b8df899a JM |
1258 | @html |
1259 | </p> | |
1260 | <hr> | |
1261 | @end html | |
1262 | @heading @anchor{alpha-*-osf1}alpha-*-osf1 | |
1263 | Systems using processors that implement the DEC Alpha architecture and | |
1264 | are running the DEC Unix (OSF/1) operating system, for example the DEC | |
1265 | Alpha AXP systems.CC.) | |
1266 | ||
1267 | GNU CC writes a @samp{.verstamp} directive to the assembler output file | |
1268 | unless it is built as a cross-compiler. It gets the version to use from | |
1269 | the system header file @file{/usr/include/stamp.h}. If you install a | |
1270 | new version of DEC Unix, you should rebuild GCC to pick up the new version | |
1271 | stamp. | |
1272 | ||
1273 | Note that since the Alpha is a 64-bit architecture, cross-compilers from | |
1274 | 32-bit machines will not generate code as efficient as that generated | |
1275 | when the compiler is running on a 64-bit machine because many | |
1276 | optimizations that depend on being able to represent a word on the | |
1277 | target in an integral value on the host cannot be performed. Building | |
1278 | cross-compilers on the Alpha for 32-bit machines has only been tested in | |
1279 | a few cases and may not work properly. | |
1280 | ||
1281 | @code{make compare} may fail on old versions of DEC Unix unless you add | |
1282 | @samp{-save-temps} to @code{CFLAGS}. On these systems, the name of the | |
1283 | assembler input file is stored in the object file, and that makes | |
1284 | comparison fail if it differs between the @code{stage1} and | |
1285 | @code{stage2} compilations. The option @samp{-save-temps} forces a | |
1286 | fixed name to be used for the assembler input file, instead of a | |
1287 | randomly chosen name in @file{/tmp}. Do not add @samp{-save-temps} | |
1288 | unless the comparisons fail without that option. If you add | |
1289 | @samp{-save-temps}, you will have to manually delete the @samp{.i} and | |
1290 | @samp{.s} files after each series of compilations. | |
1291 | ||
1292 | GNU CC now supports both the native (ECOFF) debugging format used by DBX | |
1293 | and GDB and an encapsulated STABS format for use only with GDB. See the | |
1294 | discussion of the @samp{--with-stabs} option of @file{configure} above | |
1295 | for more information on these formats and how to select them. | |
1296 | ||
1297 | There is a bug in DEC's assembler that produces incorrect line numbers | |
1298 | for ECOFF format when the @samp{.align} directive is used. To work | |
1299 | around this problem, GNU CC will not emit such alignment directives | |
1300 | while writing ECOFF format debugging information even if optimization is | |
1301 | being performed. Unfortunately, this has the very undesirable | |
1302 | side-effect that code addresses when @samp{-O} is specified are | |
1303 | different depending on whether or not @samp{-g} is also specified. | |
1304 | ||
1305 | To avoid this behavior, specify @samp{-gstabs+} and use GDB instead of | |
1306 | DBX. DEC is now aware of this problem with the assembler and hopes to | |
1307 | provide a fix shortly. | |
1308 | ||
f42974dc DW |
1309 | @html |
1310 | </p> | |
1311 | <hr> | |
f42974dc | 1312 | @end html |
ef88b07d | 1313 | @heading @anchor{alpha*-dec-osf*}alpha*-dec-osf* |
f42974dc DW |
1314 | |
1315 | If you install a shared libstdc++ and, when you link a non-trivial C++ | |
38209993 | 1316 | program (for example, @file{gcc/testsuite/g++.other/delete3.C}), |
f42974dc DW |
1317 | the linker reports a couple of errors about multiply-defined symbols |
1318 | (for example, @code{nothrow}, @code{__throw} and | |
1319 | @code{terminate(void)}), you've probably got a linker bug, for | |
1320 | which there's no known fix. The officially recommended work-around is | |
1321 | to remove the shared libstdc++. | |
1322 | ||
1323 | An alternative solution is to arrange that all symbols from | |
1324 | @code{libgcc} get copied to the shared @code{libstdc++}; | |
1325 | see detailed solution below. (Surprising as it may seem, this does | |
1326 | indeed fix the problem!) @emph{Beware} that this may bring you | |
1327 | binary-compatibility problems in the future, if you don't use the same | |
1328 | work-around next time you build @code{libstdc++}: if programs | |
1329 | start to depend on @code{libstdc++} to provide symbols that used | |
1330 | to be only in @code{libgcc}, you must arrange that | |
1331 | @code{libstdc++} keeps providing them, otherwise the programs | |
1332 | will have to be relinked. | |
1333 | ||
1334 | The magic spell is to add @code{-Wl,-all,-lgcc,-none} to the | |
1335 | definition of macro @code{SHDEPS} in | |
38209993 LG |
1336 | @file{libstdc++/config/dec-osf.ml} @emph{before} |
1337 | @file{alpha*-dec-osf*/libstdc++/Makefile} is created (a | |
f42974dc DW |
1338 | @uref{dec-osf-shlibstdc++.patch,,patch} |
1339 | that does just that is available). If the Makefile already exists, run | |
38209993 LG |
1340 | @file{./config.status} within directory |
1341 | @file{alpha*-dec-osf*/libstdc++} (and | |
1342 | @file{alpha*-dec-osf*/ieee/libstdc++}, if it also exists). | |
1343 | Remove any existing @file{libstdc++.so*} from such directories, | |
1344 | and run @samp{make all-target-libstdc++} in the top-level | |
1345 | directory, then @samp{make install-target-libstdc++}. | |
f42974dc DW |
1346 | |
1347 | If you have already removed the build tree, you may just remove | |
38209993 | 1348 | @file{libstdc++.so.2.10.0} from the install tree and re-create |
f42974dc | 1349 | it with the command |
38209993 LG |
1350 | @samp{gcc -shared -o libstdc++.so.2.10.0 -Wl,-all,-lstdc++,-lgcc,-none -lm}. |
1351 | If the @file{ieee} | |
f42974dc | 1352 | sub-directory exists, repeat this command in it, with the additional |
38209993 | 1353 | flag @option{-mieee}. |
f42974dc | 1354 | |
b8df899a JM |
1355 | @html |
1356 | </p> | |
1357 | <hr> | |
1358 | @end html | |
1359 | @heading @anchor{arc-*-elf}arc-*-elf | |
1360 | Argonaut ARC processor. | |
1361 | This configuration is intended for embedded systems. | |
1362 | ||
1363 | @html | |
1364 | </p> | |
1365 | <hr> | |
1366 | @end html | |
1367 | @heading @anchor{arm-*-aout}arm-*-aout | |
1368 | Advanced RISC Machines ARM-family processors. These are often used in | |
1369 | embedded applications. There are no standard Unix configurations. | |
1370 | This configuration corresponds to the basic instruction sequences and will | |
1371 | produce @file{a.out} format object modules. | |
1372 | ||
1373 | You may need to make a variant of the file @file{arm.h} for your particular | |
1374 | configuration. | |
1375 | ||
1376 | @html | |
1377 | </p> | |
1378 | <hr> | |
1379 | @end html | |
1380 | @heading @anchor{arm-*-elf}arm-*-elf | |
1381 | This configuration is intended for embedded systems. | |
1382 | ||
476c334e PB |
1383 | @html |
1384 | </p> | |
1385 | <hr> | |
476c334e | 1386 | @end html |
ef88b07d | 1387 | @heading @anchor{arm*-*-linux-gnu}arm*-*-linux-gnu |
476c334e PB |
1388 | |
1389 | We require GNU binutils 2.10 or newer. | |
1390 | ||
b8df899a JM |
1391 | @html |
1392 | </p> | |
1393 | <hr> | |
1394 | @end html | |
1395 | @heading @anchor{arm-*-riscix}arm-*-riscix | |
1396 | The ARM2 or ARM3 processor running RISC iX, Acorn's port of BSD Unix. | |
1397 | If you are running a version of RISC iX prior to 1.2 then you must | |
1398 | specify the version number during configuration. Note that the | |
1399 | assembler shipped with RISC iX does not support stabs debugging | |
1400 | information; a new version of the assembler, with stabs support | |
1401 | included, is now available from Acorn and via ftp | |
1402 | @uref{ftp://ftp.acorn.com/pub/riscix/as+xterm.tar.Z}. To enable stabs | |
1403 | debugging, pass @samp{--with-gnu-as} to configure. | |
1404 | ||
1405 | You will need to install GNU @file{sed} before you can run configure. | |
1406 | ||
f42974dc DW |
1407 | @html |
1408 | </p> | |
1409 | <hr> | |
f42974dc | 1410 | @end html |
ef88b07d | 1411 | @heading @anchor{avr}avr |
f42974dc | 1412 | |
b8df899a JM |
1413 | ATMEL AVR-family micro controllers. These are used in embedded |
1414 | applications. There are no standard Unix configurations. @xref{AVR | |
1415 | Options,, AVR Options, gcc, Using and Porting the GNU Compiler | |
1416 | Collection (GCC)}, for the list of supported MCU types. | |
1417 | ||
38209993 | 1418 | Use @samp{configure --target=avr} |
f42974dc DW |
1419 | @option{--enable-languages="c"}' to configure GCC. |
1420 | ||
1421 | Further installation notes and other useful information about AVR tools | |
1422 | can also be obtained from: | |
1423 | ||
1424 | @itemize @bullet | |
1425 | @item | |
1426 | @uref{http://home.overta.ru/users/denisc,,http://home.overta.ru/users/denisc} | |
1427 | @item | |
1428 | @uref{http://www.itnet.pl/amelektr/avr,,http://www.itnet.pl/amelektr/avr} | |
1429 | @end itemize | |
1430 | ||
20293b4c | 1431 | We @emph{strongly} recommend using binutils 2.11 or newer. |
f42974dc DW |
1432 | |
1433 | The following error: | |
1434 | @example | |
1435 | Error: register required | |
1436 | @end example | |
1437 | ||
1438 | indicates that you should upgrade to a newer version of the binutils. | |
1439 | ||
b8df899a JM |
1440 | @html |
1441 | </p> | |
1442 | <hr> | |
1443 | @end html | |
1444 | @heading @anchor{decstation-*}decstation-* | |
1445 | MIPS-based DECstations can support three different personalities: | |
1446 | Ultrix, DEC OSF/1, and OSF/rose. (Alpha-based DECstation products have | |
1447 | a configuration name beginning with @samp{alpha-dec}.) To configure GCC | |
1448 | for these platforms use the following configurations: | |
1449 | ||
1450 | @table @samp | |
1451 | @item decstation-ultrix | |
1452 | Ultrix configuration. | |
1453 | ||
1454 | @item decstation-osf1 | |
1455 | Dec's version of OSF/1. | |
1456 | ||
1457 | @item decstation-osfrose | |
1458 | Open Software Foundation reference port of OSF/1 which uses the | |
1459 | OSF/rose object file format instead of ECOFF. Normally, you | |
1460 | would not select this configuration. | |
1461 | @end table | |
1462 | ||
1463 | The MIPS C compiler needs to be told to increase its table size | |
1464 | for switch statements with the @samp{-Wf,-XNg1500} option in | |
1465 | order to compile @file{cp/parse.c}. If you use the @samp{-O2} | |
1466 | optimization option, you also need to use @samp{-Olimit 3000}. | |
1467 | Both of these options are automatically generated in the | |
1468 | @file{Makefile} that the shell script @file{configure} builds. | |
1469 | If you override the @code{CC} make variable and use the MIPS | |
1470 | compilers, you may need to add @samp{-Wf,-XNg1500 -Olimit 3000}. | |
1471 | ||
f42974dc DW |
1472 | @html |
1473 | </p> | |
1474 | <hr> | |
f42974dc | 1475 | @end html |
ef88b07d | 1476 | @heading @anchor{dos}DOS |
f42974dc DW |
1477 | |
1478 | Please have a look at our @uref{binaries.html,,binaries page}. | |
1479 | ||
b8df899a JM |
1480 | @html |
1481 | </p> | |
1482 | <hr> | |
1483 | @end html | |
1484 | @heading @anchor{dsp16xx}dsp16xx | |
1485 | A port to the AT&T DSP1610 family of processors. | |
1486 | ||
1487 | @html | |
1488 | </p> | |
1489 | <hr> | |
1490 | @end html | |
1491 | @heading @anchor{elxsi-elxsi-bsd}elxsi-elxsi-bsd | |
1492 | The Elxsi's C compiler has known limitations that prevent it from | |
1493 | compiling GNU C. Please contact @email{mrs@@cygnus.com} for more details. | |
1494 | ||
f42974dc DW |
1495 | @html |
1496 | </p> | |
1497 | <hr> | |
f42974dc | 1498 | @end html |
ef88b07d | 1499 | @heading @anchor{h8300-hms}h8300-hms |
b8df899a | 1500 | Hitachi H8/300 series of processors. |
f42974dc DW |
1501 | |
1502 | Please have a look at our @uref{binaries.html,,binaries page}. | |
1503 | ||
b8df899a JM |
1504 | The calling convention and structure layout has changed in release 2.6. |
1505 | All code must be recompiled. The calling convention now passes the | |
1506 | first three arguments in function calls in registers. Structures are no | |
1507 | longer a multiple of 2 bytes. | |
1508 | ||
f42974dc DW |
1509 | @html |
1510 | </p> | |
1511 | <hr> | |
f42974dc | 1512 | @end html |
ef88b07d | 1513 | @heading @anchor{hppa*-hp-hpux*}hppa*-hp-hpux* |
f42974dc DW |
1514 | |
1515 | We @emph{highly} recommend using gas/binutils-2.8 or newer on all hppa | |
1516 | platforms; you may encounter a variety of problems when using the HP | |
1517 | assembler. | |
1518 | ||
1519 | Specifically, @option{-g} does not work on HP-UX (since that system | |
1520 | uses a peculiar debugging format which GCC does not know about), unless you | |
38209993 LG |
1521 | use GAS and GDB and configure GCC with the |
1522 | @uref{./configure.html#with-gnu-as,,@option{--with-gnu-as}} and | |
1523 | @option{--with-as=...} options. | |
f42974dc DW |
1524 | |
1525 | If you wish to use pa-risc 2.0 architecture support, you must use either | |
20293b4c | 1526 | the HP assembler, gas/binutils-2.11 or a recent |
f42974dc DW |
1527 | @uref{ftp://sources.redhat.com/pub/binutils/snapshots,,snapshot of gas}. |
1528 | ||
1529 | More specific information to hppa*-hp-hpux* targets follows. | |
1530 | ||
1531 | @html | |
1532 | </p> | |
1533 | <hr> | |
f42974dc | 1534 | @end html |
ef88b07d | 1535 | @heading @anchor{hppa*-hp-hpux9}hppa*-hp-hpux9 |
f42974dc DW |
1536 | |
1537 | The HP assembler has major problems on this platform. We've tried to work | |
1538 | around the worst of the problems. However, those workarounds may be causing | |
1539 | linker crashes in some circumstances; the workarounds also probably prevent | |
1540 | shared libraries from working. Use the GNU assembler to avoid these problems. | |
1541 | ||
1542 | ||
1543 | The configuration scripts for GCC will also trigger a bug in the hpux9 | |
38209993 LG |
1544 | shell. To avoid this problem set @env{CONFIG_SHELL} to @file{/bin/ksh} |
1545 | and @env{SHELL} to @file{/bin/ksh} in your environment. | |
f42974dc DW |
1546 | |
1547 | ||
1548 | @html | |
1549 | </p> | |
1550 | <hr> | |
f42974dc | 1551 | @end html |
ef88b07d | 1552 | @heading @anchor{hppa*-hp-hpux10}hppa*-hp-hpux10 |
f42974dc DW |
1553 | |
1554 | For hpux10.20, we @emph{highly} recommend you pick up the latest sed patch | |
1555 | @code{PHCO_19798} from HP. HP has two sites which provide patches free of | |
1556 | charge: | |
1557 | ||
1558 | @itemize @bullet | |
1559 | @item | |
1560 | @html | |
1561 | <a href="http://us-support.external.hp.com">US, Canada, Asia-Pacific, and | |
1562 | Latin-America</a> | |
1563 | @end html | |
1564 | @ifnothtml | |
1565 | @uref{http://us-support.external.hp.com,,}US, Canada, Asia-Pacific, and | |
1566 | Latin-America | |
1567 | @end ifnothtml | |
1568 | @item | |
1569 | @uref{http://europe-support.external.hp.com,,Europe} | |
1570 | @end itemize | |
1571 | ||
1572 | The HP assembler on these systems is much better than the hpux9 assembler, | |
1573 | but still has some problems. Most notably the assembler inserts timestamps | |
1574 | into each object file it creates, causing the 3-stage comparison test to fail | |
38209993 LG |
1575 | during a @samp{make bootstrap}. You should be able to continue by |
1576 | saying @samp{make all} after getting the failure from @samp{make | |
1577 | bootstrap}. | |
f42974dc DW |
1578 | |
1579 | ||
1580 | @html | |
1581 | </p> | |
1582 | <hr> | |
f42974dc | 1583 | @end html |
ef88b07d | 1584 | @heading @anchor{hppa*-hp-hpux11}hppa*-hp-hpux11 |
f42974dc DW |
1585 | |
1586 | GCC 2.95.2 does not support HP-UX 11, and it cannot generate 64-bit | |
1587 | object files. Current (as of late 2000) snapshots and GCC 3.0 do support | |
1588 | HP-UX 11. | |
1589 | ||
1590 | ||
b8df899a JM |
1591 | @html |
1592 | </p> | |
1593 | <hr> | |
1594 | @end html | |
1595 | @heading @anchor{i370-*-*}i370-*-* | |
1596 | This port is very preliminary and has many known bugs. We hope to | |
1597 | have a higher-quality port for this machine soon. | |
1598 | ||
f42974dc DW |
1599 | @html |
1600 | </p> | |
1601 | <hr> | |
f42974dc | 1602 | @end html |
ef88b07d | 1603 | @heading @anchor{*-*-linux-gnu}*-*-linux-gnu |
f42974dc DW |
1604 | |
1605 | If you use glibc 2.2 (or 2.1.9x), GCC 2.95.2 won't install | |
1606 | out-of-the-box. You'll get compile errors while building libstdc++. | |
1607 | The patch @uref{glibc-2.2.patch,,glibc-2.2.patch}, that is to be | |
1608 | applied in the GCC source tree, fixes the compatibility problems. | |
1609 | ||
b8df899a JM |
1610 | @html |
1611 | </p> | |
1612 | <hr> | |
1613 | @end html | |
1614 | @heading @anchor{ix86-*-linux*oldld}i?86-*-linux*oldld | |
1615 | Use this configuration to generate @file{a.out} binaries on Linux-based | |
1616 | GNU systems if you do not have gas/binutils version 2.5.2 or later | |
1617 | installed. This is an obsolete configuration. | |
1618 | ||
1619 | @html | |
1620 | </p> | |
1621 | <hr> | |
1622 | @end html | |
1623 | @heading @anchor{ix86-*-linux*aout}i?86-*-linux*aout | |
1624 | Use this configuration to generate @file{a.out} binaries on Linux-based | |
1625 | GNU systems. This configuration is being superseded. You must use | |
1626 | gas/binutils version 2.5.2 or later. | |
1627 | ||
f42974dc DW |
1628 | @html |
1629 | </p> | |
1630 | <hr> | |
f42974dc | 1631 | @end html |
ef88b07d | 1632 | @heading @anchor{ix86-*-linux*}i?86-*-linux* |
f42974dc DW |
1633 | |
1634 | You will need binutils-2.9.1.0.15 or newer for exception handling to work. | |
1635 | ||
1636 | If you receive Signal 11 errors when building on GNU/Linux, then it is | |
1637 | possible you have a hardware problem. Further information on this can be | |
1638 | found on @uref{http://www.bitwizard.nl/sig11/,,www.bitwizard.nl}. | |
1639 | ||
b8df899a JM |
1640 | @html |
1641 | </p> | |
1642 | <hr> | |
1643 | @end html | |
1644 | @heading @anchor{ix86-*-sco}i?86-*-sco | |
1645 | Compilation with RCC is recommended. Also, it may be a good idea to | |
1646 | link with GNU malloc instead of the malloc that comes with the system. | |
1647 | ||
1648 | @html | |
1649 | </p> | |
1650 | <hr> | |
1651 | @end html | |
1652 | @heading @anchor{ix86-*-sco3.2v4}i?86-*-sco3.2v4 | |
1653 | Use this configuration for SCO release 3.2 version 4. | |
1654 | ||
f42974dc DW |
1655 | @html |
1656 | </p> | |
1657 | <hr> | |
f42974dc | 1658 | @end html |
ef88b07d | 1659 | @heading @anchor{ix86-*-sco3.2v5*}i?86-*-sco3.2v5* |
b8df899a | 1660 | Use this for the SCO OpenServer Release 5 family of operating systems. |
f42974dc DW |
1661 | |
1662 | Unlike earlier versions of GCC, the ability to generate COFF with this | |
1663 | target is no longer provided. | |
1664 | ||
1665 | Earlier versions of GCC emitted Dwarf-1 when generating ELF to allow | |
1666 | the system debugger to be used. That support was too burdensome to | |
1667 | maintain. GCC now emits only dwarf-2 for this target. This means you | |
1668 | may use either the UDK debugger or GDB to debug programs built by this | |
1669 | version of GCC. | |
1670 | ||
1671 | If you are building languages other than C, you must follow the instructions | |
38209993 LG |
1672 | about invoking @samp{make bootstrap} because the native OpenServer |
1673 | compiler will build a @command{cc1plus} that will not correctly parse many | |
1674 | valid C++ programs including those in @file{libgcc.a}. | |
1675 | @strong{You must do a @samp{make bootstrap} if you are building with the | |
f42974dc DW |
1676 | native compiler.} |
1677 | ||
38209993 | 1678 | Use of the @option{-march-pentiumpro} flag can result in |
f42974dc DW |
1679 | unrecognized opcodes when using the native assembler on OS versions before |
1680 | 5.0.6. (Support for P6 opcodes was added to the native ELF assembler in | |
1681 | that version.) While it's rather rare to see these emitted by GCC yet, | |
1682 | errors of the basic form: | |
1683 | ||
1684 | @example | |
1685 | /usr/tmp/ccaNlqBc.s:22:unknown instruction: fcomip | |
1686 | /usr/tmp/ccaNlqBc.s:50:unknown instruction: fucomip | |
1687 | @end example | |
1688 | ||
1689 | are symptoms of this problem. You may work around this by not | |
1690 | building affected files with that flag, by using the GNU assembler, or | |
1691 | by using the assembler provided with the current version of the OS. | |
1692 | Users of GNU assembler should see the note below for hazards on doing | |
1693 | so. | |
1694 | ||
1695 | The native SCO assembler that is provided with the OS at no | |
1696 | charge is normally required. If, however, you must be able to use | |
1697 | the GNU assembler (perhaps you're compiling code with asms that | |
1698 | require GAS syntax) you may configure this package using the flags | |
38209993 LG |
1699 | @uref{./configure.html#with-gnu-as,,@option{--with-gnu-as}}. You must |
1700 | use a recent version of GNU binutils; versions past 2.9.1 seem to work | |
1701 | well. | |
f42974dc DW |
1702 | |
1703 | In general, the @option{--with-gnu-as} option isn't as well tested | |
1704 | as the native assembler. | |
1705 | ||
1706 | Look in @file{gcc/config/i386/sco5.h} (search for "messy") for | |
1707 | additional OpenServer-specific flags. | |
1708 | ||
38209993 | 1709 | Systems based on OpenServer before 5.0.4 (@samp{uname -X} |
f42974dc DW |
1710 | will tell you what you're running) require TLS597 from ftp.sco.com/TLS |
1711 | for C++ constructors and destructors to work right. | |
1712 | ||
1713 | The system linker in (at least) 5.0.4 and 5.0.5 will sometimes | |
1714 | do the wrong thing for a construct that GCC will emit for PIC | |
1715 | code. This can be seen as execution testsuite failures when using | |
1716 | -fPIC on 921215-1.c, 931002-1.c, nestfunc-1.c, and gcov-1.c. | |
1717 | For 5.0.5, an updated linker that will cure this problem is | |
1718 | available. You must install both | |
38209993 | 1719 | @uref{ftp://ftp.sco.com/Supplements/rs505a/,,ftp://ftp.sco.com/Supplements/rs505a/} |
f42974dc DW |
1720 | and @uref{ftp://ftp.sco.com/SLS/,,OSS499A}. |
1721 | ||
1722 | The dynamic linker in OpenServer 5.0.5 (earlier versions may show | |
1723 | the same problem) aborts on certain g77-compiled programs. It's particularly | |
1724 | likely to be triggered by building Fortran code with the @option{-fPIC} flag. | |
1725 | Although it's conceivable that the error could be triggered by other | |
1726 | code, only G77-compiled code has been observed to cause this abort. | |
1727 | If you are getting core dumps immediately upon execution of your | |
1728 | g77 program - and especially if it's compiled with -fPIC - try applying | |
38209993 | 1729 | @uref{sco_osr5_g77.patch,,@file{sco_osr5_g77.patch}} to your libf2c and |
f42974dc DW |
1730 | rebuilding GCC. |
1731 | Affected faults, when analyzed in a debugger, will show a stack | |
1732 | backtrace with a fault occurring in @code{rtld()} and the program | |
38209993 | 1733 | running as @file{/usr/lib/ld.so.1}. This problem has been reported to SCO |
f42974dc DW |
1734 | engineering and will hopefully be addressed in later releases. |
1735 | ||
1736 | ||
1737 | @html | |
1738 | </p> | |
1739 | <hr> | |
f42974dc | 1740 | @end html |
ef88b07d | 1741 | @heading @anchor{ix86-*-solaris*}i?86-*-solaris* |
f42974dc DW |
1742 | |
1743 | GCC 2.95.2, when configured to use the GNU assembler, would invoke | |
1744 | it with the @code{-s} switch, that GNU as up to 2.9.5.0.12 does | |
1745 | not support. If you'd rather not use a newer GNU as nor the native | |
1746 | assembler, you'll need the patch | |
38209993 | 1747 | @uref{x86-sol2-gas.patch,,@file{x86-sol2-gas.patch}}. |
f42974dc DW |
1748 | |
1749 | ||
1750 | @html | |
1751 | </p> | |
1752 | <hr> | |
f42974dc | 1753 | @end html |
ef88b07d | 1754 | @heading @anchor{ix86-*-udk}i?86-*-udk |
f42974dc DW |
1755 | |
1756 | This target emulates the SCO Universal Development Kit and requires that | |
1757 | package be installed. (If it is installed, you will have a | |
1758 | @file{/udk/usr/ccs/bin/cc } file present.) It's very much like the | |
1759 | @code{i?86-*-unixware7*} target | |
1760 | but is meant to be used when hosting on a system where UDK isn't the | |
1761 | default compiler such as OpenServer 5 or Unixware 2. This target will | |
1762 | generate binaries that will run on OpenServer, Unixware 2, or Unixware 7, | |
1763 | with the same warnings and caveats as the SCO UDK. | |
1764 | ||
1765 | You can stage1 with either your native compiler or with UDK. If you | |
1766 | don't do a full bootstrap when initially building with your native compiler | |
1767 | you will have an utterly unusable pile of bits as your reward. | |
1768 | ||
1769 | This target is a little tricky to build because we have to distinguish | |
1770 | it from the native tools (so it gets headers, startups, and libraries | |
1771 | from the right place) while making the tools not think we're actually | |
1772 | building a cross compiler. The easiest way to do this is with a configure | |
1773 | command like this: | |
1774 | ||
38209993 | 1775 | @samp{CC=/udk/usr/ccs/bin/cc <i>/your/path/to/</i>gcc/configure |
f42974dc DW |
1776 | --host=i686-pc-udk --target=i686-pc-udk --program-prefix=udk-} |
1777 | ||
1778 | @emph{You should substitute 'i686' in the above command with the appropriate | |
1779 | processor for your host.} | |
1780 | ||
38209993 LG |
1781 | You should follow this with a @samp{make bootstrap} then |
1782 | @samp{make install}. You can then access the UDK-targeted GCC | |
1783 | tools by adding @command{udk-} before the commonly known name. For | |
1784 | example, to invoke the C compiler, you would use @command{udk-gcc}. | |
1785 | They will coexist peacefully with any native-target GCC tools you may | |
1786 | have installed. | |
f42974dc DW |
1787 | |
1788 | ||
b8df899a JM |
1789 | @html |
1790 | </p> | |
1791 | <hr> | |
1792 | @end html | |
1793 | @heading @anchor{ix86-*-isc}i?86-*-isc | |
1794 | It may be a good idea to link with GNU malloc instead of the malloc that | |
1795 | comes with the system. | |
1796 | ||
1797 | In ISC version 4.1, @file{sed} core dumps when building | |
1798 | @file{deduced.h}. Use the version of @file{sed} from version 4.0. | |
1799 | ||
1800 | @html | |
1801 | </p> | |
1802 | <hr> | |
1803 | @end html | |
1804 | @heading @anchor{ix86-*-esix}i?86-*-esix | |
1805 | It may be good idea to link with GNU malloc instead of the malloc that | |
1806 | comes with the system. | |
1807 | ||
1808 | @html | |
1809 | </p> | |
1810 | <hr> | |
1811 | @end html | |
1812 | @heading @anchor{ix86-ibm-aix}i?86-ibm-aix | |
1813 | You need to use GAS version 2.1 or later, and LD from | |
1814 | GNU binutils version 2.2 or later. | |
1815 | ||
1816 | @html | |
1817 | </p> | |
1818 | <hr> | |
1819 | @end html | |
1820 | @heading @anchor{ix86-sequent-bsd}i?86-sequent-bsd | |
1821 | Go to the Berkeley universe before compiling. | |
1822 | ||
1823 | @html | |
1824 | </p> | |
1825 | <hr> | |
1826 | @end html | |
1827 | @heading @anchor{ix86-sequent-ptx1*}i?86-sequent-ptx1*, i?86-sequent-ptx2* | |
1828 | You must install GNU @file{sed} before running @file{configure}. | |
1829 | ||
1830 | @html | |
1831 | </p> | |
1832 | <hr> | |
1833 | @end html | |
1834 | @heading @anchor{#ix86-*-sysv3*}i?86-*-sysv3* | |
1835 | The @code{fixproto} shell script may trigger a bug in the system shell. | |
1836 | If you encounter this problem, upgrade your operating system or | |
1837 | use BASH (the GNU shell) to run @code{fixproto}. | |
1838 | ||
1839 | ||
1840 | @html | |
1841 | </p> | |
1842 | <hr> | |
1843 | @end html | |
1844 | @heading @anchor{i860-intel-osf*}i860-intel-osf* | |
1845 | On the Intel Paragon (an i860 machine), if you are using operating | |
1846 | system version 1.0, you will get warnings or errors about redefinition | |
1847 | of @code{va_arg} when you build GCC. | |
1848 | ||
1849 | If this happens, then you need to link most programs with the library | |
1850 | @file{iclib.a}. You must also modify @file{stdio.h} as follows: before | |
1851 | the lines | |
1852 | ||
1853 | @example | |
1854 | #if defined(__i860__) && !defined(_VA_LIST) | |
1855 | #include <va_list.h> | |
1856 | @end example | |
1857 | ||
1858 | @noindent | |
1859 | insert the line | |
1860 | ||
1861 | @example | |
1862 | #if __PGC__ | |
1863 | @end example | |
1864 | ||
1865 | @noindent | |
1866 | and after the lines | |
1867 | ||
1868 | @example | |
1869 | extern int vprintf(const char *, va_list ); | |
1870 | extern int vsprintf(char *, const char *, va_list ); | |
1871 | #endif | |
1872 | @end example | |
1873 | ||
1874 | @noindent | |
1875 | insert the line | |
1876 | ||
1877 | @example | |
1878 | #endif /* __PGC__ */ | |
1879 | @end example | |
1880 | ||
1881 | These problems don't exist in operating system version 1.1. | |
1882 | ||
1883 | @html | |
1884 | </p> | |
1885 | <hr> | |
1886 | @end html | |
1887 | @heading @anchor{*-lynx-lynxos}*-lynx-lynxos | |
1888 | LynxOS 2.2 and earlier comes with GNU CC 1.x already installed as | |
1889 | @file{/bin/gcc}. You should compile with this instead of @file{/bin/cc}. | |
1890 | You can tell GNU CC to use the GNU assembler and linker, by specifying | |
1891 | @samp{--with-gnu-as --with-gnu-ld} when configuring. These will produce | |
1892 | COFF format object files and executables; otherwise GNU CC will use the | |
1893 | installed tools, which produce @file{a.out} format executables. | |
1894 | ||
f42974dc DW |
1895 | @html |
1896 | </p> | |
1897 | <hr> | |
f42974dc DW |
1898 | <!-- rs6000-ibm-aix*, powerpc-ibm-aix* --> |
1899 | @end html | |
ef88b07d | 1900 | @heading @anchor{*-ibm-aix*}*-ibm-aix* |
f42974dc DW |
1901 | |
1902 | AIX Make frequently has problems with GCC makefiles. GNU Make 3.76 or | |
1903 | newer is recommended to build on this platform. | |
1904 | ||
1905 | Errors involving "alloca" when building GCC generally are due | |
38209993 | 1906 | to an incorrect definition of @var{CC} in the Makefile or mixing files |
f42974dc DW |
1907 | compiled with the native C compiler and GCC. During the stage1 phase of |
1908 | the build, the native AIX compiler @strong{must} be invoked as "cc" | |
1909 | (not "xlc"). Once @command{configure} has been informed of | |
38209993 LG |
1910 | "xlc", one needs to use @samp{make distclean} to remove the |
1911 | configure cache files and ensure that @env{CC} environment variable | |
f42974dc DW |
1912 | does not provide a definition that will confuse @command{configure}. |
1913 | If this error occurs during stage2 or later, then the problem most likely | |
1914 | is the version of Make (see above). | |
1915 | ||
df002c7d | 1916 | Binutils 2.10 does not support AIX 4.3. Binutils available from the |
38209993 LG |
1917 | @uref{http://www-1.ibm.com/servers/aix/products/aixos/linux/,,AIX |
1918 | Toolbox for Linux: GNU and Open Source tools for AIX}; | |
df002c7d DE |
1919 | website does work. Binutils 2.11 is expected to include AIX 4.3 |
1920 | support. The GNU Assembler is necessary for libstdc++ to build. The | |
1921 | AIX native ld still is recommended. The native AIX tools do | |
1922 | interoperate with GCC. | |
1923 | ||
1924 | Linking executables and shared libraries may produce warnings of | |
1925 | duplicate symbols. The assembly files generated by GCC for AIX always | |
1926 | have included multiple symbol definitions for certain global variable | |
1927 | and function declarations in the original program. The warnings should | |
1928 | not prevent the linker from producing a correct library or runnable | |
1929 | executable. | |
1930 | ||
1931 | AIX 4.3 utilizes a "large format" archive to support both 32-bit and | |
1932 | 64-bit object modules. The routines provided in AIX 4.3.0 and AIX 4.3.1 | |
1933 | to parse archive libraries did not handle the new format correctly. | |
1934 | These routines are used by GCC and result in error messages during | |
1935 | linking such as "not a COFF file". The version of the routines shipped | |
1936 | with AIX 4.3.1 should work for a 32-bit environment. The @option{-g} | |
1937 | option of the archive command may be used to create archives of 32-bit | |
1938 | objects using the original "small format". A correct version of the | |
1939 | routines is shipped with AIX 4.3.2. | |
1940 | ||
f42974dc DW |
1941 | Some versions of the AIX binder (linker) can fail with a relocation |
1942 | overflow severe error when the @option{-bbigtoc} option is used to link | |
1943 | GCC-produced object files into an executable that overflows the TOC. A fix | |
1944 | for APAR IX75823 (OVERFLOW DURING LINK WHEN USING GCC AND -BBIGTOC) is | |
1945 | available from IBM Customer Support and from its | |
1946 | @uref{http://service.boulder.ibm.com/,,service.boulder.ibm.com} | |
1947 | website as PTF U455193. | |
1948 | ||
df002c7d DE |
1949 | The AIX 4.3.2.1 linker (bos.rte.bind_cmds Level 4.3.2.1) will dump core |
1950 | with a segmentation fault when invoked by any version of GCC. A fix for | |
1951 | APAR IX87327 is available from IBM Customer Support and from its | |
1952 | @uref{http://service.boulder.ibm.com/,,service.boulder.ibm.com} | |
1953 | website as PTF U461879. This fix is incorporated in AIX 4.3.3 and above. | |
f42974dc DW |
1954 | |
1955 | The initial assembler shipped with AIX 4.3.0 generates incorrect object | |
1956 | files. A fix for APAR IX74254 (64BIT DISASSEMBLED OUTPUT FROM COMPILER FAILS | |
1957 | TO ASSEMBLE/BIND) is available from IBM Customer Support and from its | |
1958 | @uref{http://service.boulder.ibm.com/,,service.boulder.ibm.com} | |
1959 | website as PTF U453956. This fix is incorporated in AIX 4.3.1 and above. | |
1960 | ||
df002c7d DE |
1961 | AIX provides National Language Support (NLS). Compilers and assemblers |
1962 | use NLS to support locale-specific representations of various data | |
1963 | formats including floating-point numbers (e.g., "." vs "," for | |
1964 | separating decimal fractions). There have been problems reported where | |
1965 | GCC does not produce the same floating-point formats that the assembler | |
38209993 | 1966 | expects. If one encouters this problem, set the @env{LANG} |
df002c7d | 1967 | environment variable to "C" or "En_US". |
f42974dc | 1968 | |
5791e6da DE |
1969 | By default, GCC for AIX 4.1 and above produces code that can be used on |
1970 | both Power or PowerPC processors. | |
1971 | ||
1972 | You can specify a default version for the @samp{-mcpu=}@var{cpu_type} | |
1973 | switch by using the configure option @samp{--with-cpu-}@var{cpu_type}. | |
f42974dc | 1974 | |
b8df899a JM |
1975 | @html |
1976 | </p> | |
1977 | <hr> | |
1978 | @end html | |
1979 | @heading @anchor{m32r-*-elf}m32r-*-elf | |
1980 | Mitsubishi M32R processor. | |
1981 | This configuration is intended for embedded systems. | |
1982 | ||
1983 | @html | |
1984 | </p> | |
1985 | <hr> | |
1986 | @end html | |
1987 | @heading @anchor{m68000-hp-bsd}m68000-hp-bsd | |
1988 | HP 9000 series 200 running BSD. Note that the C compiler that comes | |
1989 | with this system cannot compile GNU CC; contact @email{law@@cygnus.com} | |
1990 | to get binaries of GNU CC for bootstrapping. | |
1991 | ||
1992 | @html | |
1993 | </p> | |
1994 | <hr> | |
1995 | @end html | |
1996 | @heading @anchor{m6811-elf}m6811-elf | |
1997 | Motorola 68HC11 family micro controllers. These are used in embedded | |
1998 | applications. There are no standard Unix configurations. | |
1999 | ||
2000 | @html | |
2001 | </p> | |
2002 | <hr> | |
2003 | @end html | |
2004 | @heading @anchor{m6812-elf}m6812-elf | |
2005 | Motorola 68HC12 family micro controllers. These are used in embedded | |
2006 | applications. There are no standard Unix configurations. | |
2007 | ||
2008 | @html | |
2009 | </p> | |
2010 | <hr> | |
2011 | @end html | |
2012 | @heading @anchor{m68k-altos}m68k-altos | |
2013 | Altos 3068. You must use the GNU assembler, linker and debugger. | |
2014 | Also, you must fix a kernel bug. Details in the file @file{README.ALTOS}. | |
2015 | ||
2016 | @html | |
2017 | </p> | |
2018 | <hr> | |
2019 | @end html | |
2020 | @heading @anchor{m68k-apple-aux}m68k-apple-aux | |
2021 | Apple Macintosh running A/UX. | |
2022 | You may configure GCC to use either the system assembler and | |
2023 | linker or the GNU assembler and linker. You should use the GNU configuration | |
2024 | if you can, especially if you also want to use GNU C++. You enabled | |
2025 | that configuration with + the @samp{--with-gnu-as} and @samp{--with-gnu-ld} | |
2026 | options to @code{configure}. | |
2027 | ||
2028 | Note the C compiler that comes | |
2029 | with this system cannot compile GNU CC. You can find binaries of GNU CC | |
2030 | for bootstrapping on @code{jagubox.gsfc.nasa.gov}. | |
2031 | You will also a patched version of @file{/bin/ld} there that | |
2032 | raises some of the arbitrary limits found in the original. | |
2033 | ||
2034 | @html | |
2035 | </p> | |
2036 | <hr> | |
2037 | @end html | |
2038 | @heading @anchor{m68k-att-sysv}m68k-att-sysv | |
2039 | AT&T 3b1, a.k.a. 7300 PC. This version of GNU CC cannot | |
2040 | be compiled with the system C compiler, which is too buggy. | |
2041 | You will need to get a previous version of GCC and use it to | |
2042 | bootstrap. Binaries are available from the OSU-CIS archive, at | |
2043 | @uref{ftp://archive.cis.ohio-state.edu/pub/att7300/}. | |
2044 | ||
2045 | @html | |
2046 | </p> | |
2047 | <hr> | |
2048 | @end html | |
2049 | @heading @anchor{m68k-bull-sysv}m68k-bull-sysv | |
2050 | Bull DPX/2 series 200 and 300 with BOS-2.00.45 up to BOS-2.01. GNU CC works | |
2051 | either with native assembler or GNU assembler. You can use | |
2052 | GNU assembler with native coff generation by providing @samp{--with-gnu-as} to | |
2053 | the configure script or use GNU assembler with dbx-in-coff encapsulation | |
2054 | by providing @samp{--with-gnu-as --stabs}. For any problem with native | |
2055 | assembler or for availability of the DPX/2 port of GAS, contact | |
2056 | @email{F.Pierresteguy@@frcl.bull.fr}. | |
2057 | ||
2058 | @html | |
2059 | </p> | |
2060 | <hr> | |
2061 | @end html | |
2062 | @heading @anchor{m68k-crds-unox}m68k-crds-unox | |
2063 | Use @samp{configure unos} for building on Unos. | |
2064 | ||
2065 | The Unos assembler is named @code{casm} instead of @code{as}. For some | |
2066 | strange reason linking @file{/bin/as} to @file{/bin/casm} changes the | |
2067 | behavior, and does not work. So, when installing GNU CC, you should | |
2068 | install the following script as @file{as} in the subdirectory where | |
2069 | the passes of GCC are installed: | |
2070 | ||
2071 | @example | |
2072 | #!/bin/sh | |
2073 | casm $* | |
2074 | @end example | |
2075 | ||
2076 | The default Unos library is named @file{libunos.a} instead of | |
2077 | @file{libc.a}. To allow GNU CC to function, either change all | |
2078 | references to @samp{-lc} in @file{gcc.c} to @samp{-lunos} or link | |
2079 | @file{/lib/libc.a} to @file{/lib/libunos.a}. | |
2080 | ||
2081 | @cindex @code{alloca}, for Unos | |
2082 | When compiling GNU CC with the standard compiler, to overcome bugs in | |
2083 | the support of @code{alloca}, do not use @samp{-O} when making stage 2. | |
2084 | Then use the stage 2 compiler with @samp{-O} to make the stage 3 | |
2085 | compiler. This compiler will have the same characteristics as the usual | |
2086 | stage 2 compiler on other systems. Use it to make a stage 4 compiler | |
2087 | and compare that with stage 3 to verify proper compilation. | |
2088 | ||
2089 | (Perhaps simply defining @code{ALLOCA} in @file{x-crds} as described in | |
2090 | the comments there will make the above paragraph superfluous. Please | |
2091 | inform us of whether this works.) | |
2092 | ||
2093 | Unos uses memory segmentation instead of demand paging, so you will need | |
2094 | a lot of memory. 5 Mb is barely enough if no other tasks are running. | |
2095 | If linking @file{cc1} fails, try putting the object files into a library | |
2096 | and linking from that library. | |
2097 | ||
2098 | @html | |
2099 | </p> | |
2100 | <hr> | |
2101 | @end html | |
2102 | @heading @anchor{m68k-hp-hpux}m68k-hp-hpux | |
2103 | HP 9000 series 300 or 400 running HP-UX. HP-UX version 8.0 has a bug in | |
2104 | the assembler that prevents compilation of GNU CC. This | |
2105 | bug manifests itself during the first stage of compilation, while | |
2106 | building @file{libgcc2.a}: | |
2107 | ||
2108 | @smallexample | |
2109 | _floatdisf | |
2110 | cc1: warning: `-g' option not supported on this version of GCC | |
2111 | cc1: warning: `-g1' option not supported on this version of GCC | |
2112 | ./xgcc: Internal compiler error: program as got fatal signal 11 | |
2113 | @end smallexample | |
2114 | ||
2115 | A patched version of the assembler is available as the file | |
2116 | @uref{ftp://altdorf.ai.mit.edu/archive/cph/hpux-8.0-assembler}. If you | |
2117 | have HP software support, the patch can also be obtained directly from | |
2118 | HP, as described in the following note: | |
2119 | ||
2120 | @quotation | |
2121 | This is the patched assembler, to patch SR#1653-010439, where the | |
2122 | assembler aborts on floating point constants. | |
2123 | ||
2124 | The bug is not really in the assembler, but in the shared library | |
2125 | version of the function ``cvtnum(3c)''. The bug on ``cvtnum(3c)'' is | |
2126 | SR#4701-078451. Anyway, the attached assembler uses the archive | |
2127 | library version of ``cvtnum(3c)'' and thus does not exhibit the bug. | |
2128 | @end quotation | |
2129 | ||
2130 | This patch is also known as PHCO_4484. | |
2131 | ||
2132 | In addition, if you wish to use gas @samp{--with-gnu-as} you must use | |
2133 | gas version 2.1 or later, and you must use the GNU linker version 2.1 or | |
2134 | later. Earlier versions of gas relied upon a program which converted the | |
2135 | gas output into the native HP-UX format, but that program has not been | |
2136 | kept up to date. gdb does not understand that native HP-UX format, so | |
2137 | you must use gas if you wish to use gdb. | |
2138 | ||
2139 | On HP-UX version 8.05, but not on 8.07 or more recent versions, the | |
2140 | @code{fixproto} shell script triggers a bug in the system shell. If you | |
2141 | encounter this problem, upgrade your operating system or use BASH (the | |
2142 | GNU shell) to run @code{fixproto}. This bug will cause the fixproto | |
2143 | program to report an error of the form: | |
2144 | ||
2145 | @example | |
2146 | ./fixproto: sh internal 1K buffer overflow | |
2147 | @end example | |
2148 | ||
2149 | To fix this, you can also change the first line of the fixproto script | |
2150 | to look like: | |
2151 | ||
2152 | @example | |
2153 | #!/bin/ksh | |
2154 | @end example | |
2155 | ||
2156 | ||
f42974dc DW |
2157 | @html |
2158 | </p> | |
2159 | <hr> | |
f42974dc | 2160 | @end html |
ef88b07d | 2161 | @heading @anchor{m68k-*-nextstep*}m68k-*-nextstep* |
f42974dc | 2162 | |
b8df899a JM |
2163 | Current GCC versions probably do not work on version 2 of the NeXT |
2164 | operating system. | |
2165 | ||
2166 | On NeXTStep 3.0, the Objective C compiler does not work, due, | |
2167 | apparently, to a kernel bug that it happens to trigger. This problem | |
2168 | does not happen on 3.1. | |
2169 | ||
f42974dc DW |
2170 | You absolutely @strong{must} use GNU sed and GNU make on this platform. |
2171 | ||
2172 | ||
2173 | On NEXTSTEP 3.x where x < 3 the build of GCC will abort during | |
2174 | stage1 with an error message like this: | |
2175 | ||
2176 | @example | |
2177 | _eh | |
2178 | /usr/tmp/ccbbsZ0U.s:987:Unknown pseudo-op: .section | |
2179 | /usr/tmp/ccbbsZ0U.s:987:Rest of line ignored. 1st junk character | |
2180 | valued 95 (_). | |
2181 | @end example | |
2182 | ||
2183 | The reason for this is the fact that NeXT's assembler for these | |
2184 | versions of the operating system does not support the .section | |
2185 | pseudo op that's needed for full C++ exception functionality. | |
2186 | ||
2187 | As NeXT's assembler is a derived work from GNU as, a free | |
2188 | replacement that does can be obtained at | |
2189 | @uref{ftp://ftp.next.peak.org:/next-ftp/next/apps/devtools/as.3.3.NIHS.s.tar.gz,,ftp://ftp.next.peak.org:/next-ftp/next/apps/devtools/as.3.3.NIHS.s.tar.gz}. | |
2190 | ||
2191 | If you try to build the integrated C++ & C++ runtime libraries on this system | |
2192 | you will run into trouble with include files. The way to get around this is | |
2193 | to use the following sequence. Note you must have write permission to | |
38209993 | 2194 | the directory @var{prefix} you specified in the configuration process of GCC |
f42974dc DW |
2195 | for this sequence to work. |
2196 | ||
2197 | @example | |
2198 | cd bld-gcc | |
2199 | make all-texinfo all-bison all-byacc all-binutils all-gas all-ld | |
2200 | cd gcc | |
2201 | make bootstrap | |
2202 | make install-headers-tar | |
2203 | cd .. | |
2204 | make bootstrap3 | |
2205 | @end example | |
2206 | ||
b8df899a JM |
2207 | @html |
2208 | </p> | |
2209 | <hr> | |
2210 | @end html | |
2211 | @heading @anchor{m68k-ncr-*}m68k-ncr-* | |
2212 | On the Tower models 4@var{n}0 and 6@var{n}0, by default a process is not | |
2213 | allowed to have more than one megabyte of memory. GCC cannot compile | |
2214 | itself (or many other programs) with @samp{-O} in that much memory. | |
2215 | ||
2216 | To solve this problem, reconfigure the kernel adding the following line | |
2217 | to the configuration file: | |
2218 | ||
2219 | @smallexample | |
2220 | MAXUMEM = 4096 | |
2221 | @end smallexample | |
2222 | ||
2223 | ||
2224 | @html | |
2225 | </p> | |
2226 | <hr> | |
2227 | @end html | |
2228 | @heading @anchor{m68k-sun}m68k-sun | |
2229 | Sun 3. We do not provide a configuration file to use the Sun FPA by | |
2230 | default, because programs that establish signal handlers for floating | |
2231 | point traps inherently cannot work with the FPA. | |
f42974dc DW |
2232 | |
2233 | @html | |
2234 | </p> | |
2235 | <hr> | |
f42974dc | 2236 | @end html |
ef88b07d | 2237 | @heading @anchor{m68k-sun-sunos4.1.1}m68k-sun-sunos4.1.1 |
f42974dc DW |
2238 | |
2239 | It is reported that you may need the GNU assembler on this platform. | |
2240 | ||
2241 | ||
b8df899a JM |
2242 | @html |
2243 | </p> | |
2244 | <hr> | |
2245 | @end html | |
2246 | @heading @anchor{m88k-*-svr3}m88k-*-svr3 | |
2247 | Motorola m88k running the AT&T/Unisoft/Motorola V.3 reference port. | |
2248 | These systems tend to use the Green Hills C, revision 1.8.5, as the | |
2249 | standard C compiler. There are apparently bugs in this compiler that | |
2250 | result in object files differences between stage 2 and stage 3. If this | |
2251 | happens, make the stage 4 compiler and compare it to the stage 3 | |
2252 | compiler. If the stage 3 and stage 4 object files are identical, this | |
2253 | suggests you encountered a problem with the standard C compiler; the | |
2254 | stage 3 and 4 compilers may be usable. | |
2255 | ||
2256 | It is best, however, to use an older version of GNU CC for bootstrapping | |
2257 | if you have one. | |
2258 | ||
2259 | @html | |
2260 | </p> | |
2261 | <hr> | |
2262 | @end html | |
2263 | @heading @anchor{m88k-*-dgux}m88k-*-dgux | |
2264 | Motorola m88k running DG/UX. To build 88open BCS native or cross | |
2265 | compilers on DG/UX, specify the configuration name as | |
2266 | @samp{m88k-*-dguxbcs} and build in the 88open BCS software development | |
2267 | environment. To build ELF native or cross compilers on DG/UX, specify | |
2268 | @samp{m88k-*-dgux} and build in the DG/UX ELF development environment. | |
2269 | You set the software development environment by issuing | |
2270 | @samp{sde-target} command and specifying either @samp{m88kbcs} or | |
2271 | @samp{m88kdguxelf} as the operand. | |
2272 | ||
2273 | If you do not specify a configuration name, @file{configure} guesses the | |
2274 | configuration based on the current software development environment. | |
2275 | ||
2276 | @html | |
2277 | </p> | |
2278 | <hr> | |
2279 | @end html | |
2280 | @heading @anchor{m88k-tektronix-sysv3}m88k-tektronix-sysv3 | |
2281 | Tektronix XD88 running UTekV 3.2e. Do not turn on | |
2282 | optimization while building stage1 if you bootstrap with | |
2283 | the buggy Green Hills compiler. Also, The bundled LAI | |
2284 | System V NFS is buggy so if you build in an NFS mounted | |
2285 | directory, start from a fresh reboot, or avoid NFS all together. | |
2286 | Otherwise you may have trouble getting clean comparisons | |
2287 | between stages. | |
2288 | ||
2289 | @html | |
2290 | </p> | |
2291 | <hr> | |
2292 | @end html | |
2293 | @heading @anchor{mips-*-*}mips-*-* | |
2294 | If you use the 1.31 version of the MIPS assembler (such as was shipped | |
2295 | with Ultrix 3.1), you will need to use the -fno-delayed-branch switch | |
2296 | when optimizing floating point code. Otherwise, the assembler will | |
2297 | complain when the GCC compiler fills a branch delay slot with a | |
2298 | floating point instruction, such as @code{add.d}. | |
2299 | ||
2300 | If on a MIPS system you get an error message saying ``does not have gp | |
2301 | sections for all it's [sic] sectons [sic]'', don't worry about it. This | |
2302 | happens whenever you use GAS with the MIPS linker, but there is not | |
2303 | really anything wrong, and it is okay to use the output file. You can | |
2304 | stop such warnings by installing the GNU linker. | |
2305 | ||
2306 | It would be nice to extend GAS to produce the gp tables, but they are | |
2307 | optional, and there should not be a warning about their absence. | |
2308 | ||
2309 | Users have reported some problems with version 2.0 of the MIPS | |
2310 | compiler tools that were shipped with Ultrix 4.1. Version 2.10 | |
2311 | which came with Ultrix 4.2 seems to work fine. | |
2312 | ||
2313 | Users have also reported some problems with version 2.20 of the | |
2314 | MIPS compiler tools that were shipped with RISC/os 4.x. The earlier | |
2315 | version 2.11 seems to work fine. | |
2316 | ||
2317 | Some versions of the MIPS linker will issue an assertion failure | |
2318 | when linking code that uses @code{alloca} against shared | |
2319 | libraries on RISC-OS 5.0, and DEC's OSF/1 systems. This is a bug | |
2320 | in the linker, that is supposed to be fixed in future revisions. | |
2321 | To protect against this, GCC passes @samp{-non_shared} to the | |
2322 | linker unless you pass an explicit @samp{-shared} or | |
2323 | @samp{-call_shared} switch. | |
2324 | ||
2325 | @heading @anchor{mips-mips-bsd}mips-mips-bsd | |
2326 | MIPS machines running the MIPS operating system in BSD mode. It's | |
2327 | possible that some old versions of the system lack the functions | |
2328 | @code{memcpy}, @code{memmove}, @code{memcmp}, and @code{memset}. If your | |
2329 | system lacks these, you must remove or undo the definition of | |
2330 | @code{TARGET_MEM_FUNCTIONS} in @file{mips-bsd.h}. | |
2331 | ||
2332 | The MIPS C compiler needs to be told to increase its table size | |
2333 | for switch statements with the @samp{-Wf,-XNg1500} option in | |
2334 | order to compile @file{cp/parse.c}. If you use the @samp{-O2} | |
2335 | optimization option, you also need to use @samp{-Olimit 3000}. | |
2336 | Both of these options are automatically generated in the | |
2337 | @file{Makefile} that the shell script @file{configure} builds. | |
2338 | If you override the @code{CC} make variable and use the MIPS | |
2339 | compilers, you may need to add @samp{-Wf,-XNg1500 -Olimit 3000}. | |
2340 | ||
2341 | @html | |
2342 | </p> | |
2343 | <hr> | |
2344 | @end html | |
2345 | @heading @anchor{mips-mips-riscos*}mips-mips-riscos* | |
2346 | The MIPS C compiler needs to be told to increase its table size | |
2347 | for switch statements with the @samp{-Wf,-XNg1500} option in | |
2348 | order to compile @file{cp/parse.c}. If you use the @samp{-O2} | |
2349 | optimization option, you also need to use @samp{-Olimit 3000}. | |
2350 | Both of these options are automatically generated in the | |
2351 | @file{Makefile} that the shell script @file{configure} builds. | |
2352 | If you override the @code{CC} make variable and use the MIPS | |
2353 | compilers, you may need to add @samp{-Wf,-XNg1500 -Olimit 3000}. | |
2354 | ||
2355 | MIPS computers running RISC-OS can support four different | |
2356 | personalities: default, BSD 4.3, System V.3, and System V.4 | |
2357 | (older versions of RISC-OS don't support V.4). To configure GCC | |
2358 | for these platforms use the following configurations: | |
2359 | ||
2360 | @table @samp | |
2361 | @item mips-mips-riscos@code{rev} | |
2362 | Default configuration for RISC-OS, revision @code{rev}. | |
2363 | ||
2364 | @item mips-mips-riscos@code{rev}bsd | |
2365 | BSD 4.3 configuration for RISC-OS, revision @code{rev}. | |
2366 | ||
2367 | @item mips-mips-riscos@code{rev}sysv4 | |
2368 | System V.4 configuration for RISC-OS, revision @code{rev}. | |
2369 | ||
2370 | @html | |
2371 | </p> | |
2372 | <hr> | |
2373 | @end html | |
2374 | @item mips-mips-riscos@code{rev}sysv | |
2375 | System V.3 configuration for RISC-OS, revision @code{rev}. | |
2376 | @end table | |
2377 | ||
2378 | The revision @code{rev} mentioned above is the revision of | |
2379 | RISC-OS to use. You must reconfigure GCC when going from a | |
2380 | RISC-OS revision 4 to RISC-OS revision 5. This has the effect of | |
2381 | avoiding a linker bug. | |
2382 | ||
f42974dc DW |
2383 | @html |
2384 | </p> | |
2385 | <hr> | |
f42974dc | 2386 | @end html |
ef88b07d | 2387 | @heading @anchor{mips*-sgi-irix[45]}mips*-sgi-irix[45] |
f42974dc | 2388 | |
b8df899a JM |
2389 | In order to compile GCC on an SGI running IRIX 4, the "c.hdr.lib" |
2390 | option must be installed from the CD-ROM supplied from Silicon Graphics. | |
2391 | This is found on the 2nd CD in release 4.0.1. | |
2392 | ||
2393 | In order to compile GCC on an SGI running IRIX 5, the "compiler_dev.hdr" | |
2394 | subsystem must be installed from the IDO CD-ROM supplied by Silicon | |
2395 | Graphics. | |
2396 | ||
2397 | @code{make compare} may fail on version 5 of IRIX unless you add | |
2398 | @samp{-save-temps} to @code{CFLAGS}. On these systems, the name of the | |
2399 | assembler input file is stored in the object file, and that makes | |
2400 | comparison fail if it differs between the @code{stage1} and | |
2401 | @code{stage2} compilations. The option @samp{-save-temps} forces a | |
2402 | fixed name to be used for the assembler input file, instead of a | |
2403 | randomly chosen name in @file{/tmp}. Do not add @samp{-save-temps} | |
2404 | unless the comparisons fail without that option. If you do you | |
2405 | @samp{-save-temps}, you will have to manually delete the @samp{.i} and | |
2406 | @samp{.s} files after each series of compilations. | |
2407 | ||
2408 | The MIPS C compiler needs to be told to increase its table size | |
2409 | for switch statements with the @samp{-Wf,-XNg1500} option in | |
2410 | order to compile @file{cp/parse.c}. If you use the @samp{-O2} | |
2411 | optimization option, you also need to use @samp{-Olimit 3000}. | |
2412 | Both of these options are automatically generated in the | |
2413 | @file{Makefile} that the shell script @file{configure} builds. | |
2414 | If you override the @code{CC} make variable and use the MIPS | |
2415 | compilers, you may need to add @samp{-Wf,-XNg1500 -Olimit 3000}. | |
2416 | ||
2417 | On Irix version 4.0.5F, and perhaps on some other versions as well, | |
2418 | there is an assembler bug that reorders instructions incorrectly. To | |
2419 | work around it, specify the target configuration | |
2420 | @samp{mips-sgi-irix4loser}. This configuration inhibits assembler | |
2421 | optimization. | |
2422 | ||
2423 | In a compiler configured with target @samp{mips-sgi-irix4}, you can turn | |
2424 | off assembler optimization by using the @samp{-noasmopt} option. This | |
2425 | compiler option passes the option @samp{-O0} to the assembler, to | |
2426 | inhibit reordering. | |
2427 | ||
2428 | The @samp{-noasmopt} option can be useful for testing whether a problem | |
2429 | is due to erroneous assembler reordering. Even if a problem does not go | |
2430 | away with @samp{-noasmopt}, it may still be due to assembler | |
2431 | reordering---perhaps GNU CC itself was miscompiled as a result. | |
2432 | ||
2433 | To enable debugging under Irix 5, you must use GNU as 2.5 or later, | |
2434 | and use the @samp{--with-gnu-as} configure option when configuring gcc. | |
2435 | GNU as is distributed as part of the binutils package. | |
2436 | ||
f42974dc DW |
2437 | You must use GAS on these platforms, as the native assembler can not handle |
2438 | the code for exception handling support. Either of these messages indicates | |
2439 | that you are using the MIPS assembler when instead you should be using GAS: | |
2440 | ||
2441 | @samp{ as0: Error: ./libgcc2.c, line 1:Badly delimited numeric literal | |
2442 | .4byte $LECIE1-$LSCIE1 | |
2443 | as0: Error: ./libgcc2.c, line 1:malformed statement} | |
2444 | ||
2445 | or: | |
2446 | ||
2447 | @samp{ as0: Error: /src/bld-gcc/gcc/libgcc2.c, line 1:undefined symbol in expression | |
2448 | .word $LECIE1-$LSCIE1} | |
2449 | ||
2450 | These systems don't have ranlib, which various components in GCC need; you | |
2451 | should be able to avoid this problem by installing GNU binutils, which includes | |
2452 | a functional ranlib for this system. | |
2453 | ||
2454 | You may get the following warning on irix4 platforms, it can be safely | |
2455 | ignored. | |
2456 | @example | |
2457 | warning: foo.o does not have gp tables for all its sections. | |
2458 | @end example | |
2459 | ||
2460 | When building GCC, the build process loops rebuilding cc1 over and | |
2461 | over again. This happens on mips-sgi-irix5.2, and possibly other platforms.@* | |
2462 | It has been reported that this is a known bug in the make shipped with | |
2463 | IRIX 5.2. We recommend you use GNU make instead of the vendor supplied | |
2464 | make program; however, you may have success with "smake" on IRIX 5.2 if | |
2465 | you do not have GNU make available. | |
2466 | ||
3aa8219e GP |
2467 | See @uref{http://freeware.sgi.com/,,http://freeware.sgi.com/} for more |
2468 | information about using GCC on IRIX platforms. | |
f42974dc DW |
2469 | |
2470 | ||
2471 | @html | |
2472 | </p> | |
2473 | <hr> | |
f42974dc | 2474 | @end html |
ef88b07d | 2475 | @heading @anchor{mips*-sgi-irix6}mips*-sgi-irix6 |
f42974dc DW |
2476 | |
2477 | You must @emph{not} use GAS on irix6 platforms; doing so will only | |
2478 | cause problems. | |
2479 | ||
2480 | These systems don't have ranlib, which various components in GCC need; you | |
2481 | should be able to avoid this problem by making a dummy script called ranlib | |
2482 | which just exits with zero status and placing it in your path. | |
2483 | ||
2484 | If you are using Irix cc as your bootstrap compiler, you must | |
2485 | ensure that the N32 ABI is in use. To test this, compile a simple C | |
2486 | file with @command{cc} and then run @command{file} on the | |
2487 | resulting object file. The output should look like: | |
2488 | ||
2489 | @example | |
2490 | @code{ test.o: ELF N32 MSB ...} | |
2491 | @end example | |
2492 | ||
2493 | If you see: | |
2494 | @example | |
2495 | @code{ test.o: ELF 32-bit MSB} | |
2496 | @end example | |
2497 | ||
2498 | then your version of @command{cc} uses the O32 ABI default. You | |
38209993 | 2499 | should set the environment variable @env{CC} to @samp{cc -n32} |
f42974dc DW |
2500 | before configuring GCC. |
2501 | ||
2502 | GCC does not currently support generating O32 ABI binaries in the | |
2503 | mips-sgi-irix6 configurations. It used to be possible to create a GCC | |
2504 | with O32 ABI only support by configuring it for the mips-sgi-irix5 | |
2505 | target. See the link below for details. | |
2506 | ||
2507 | GCC does not correctly pass/return structures which are | |
2508 | smaller than 16 bytes and which are not 8 bytes. The problem is very | |
2509 | involved and difficult to fix. It affects a number of other targets also, | |
2510 | but IRIX 6 is affected the most, because it is a 64 bit target, and 4 byte | |
2511 | structures are common. The exact problem is that structures are being padded | |
2512 | at the wrong end, e.g. a 4 byte structure is loaded into the lower 4 bytes | |
2513 | of the register when it should be loaded into the upper 4 bytes of the | |
2514 | register. | |
2515 | ||
2516 | GCC is consistent with itself, but not consistent with the SGI C compiler | |
2517 | (and the SGI supplied runtime libraries), so the only failures that can | |
2518 | happen are when there are library functions that take/return such | |
2519 | structures. There are very few such library functions. I can only recall | |
2520 | seeing two of them: inet_ntoa, and semctl. | |
2521 | ||
3aa8219e GP |
2522 | See @uref{http://freeware.sgi.com/,,http://freeware.sgi.com/} for more |
2523 | information about using GCC on IRIX platforms. | |
f42974dc DW |
2524 | |
2525 | ||
b8df899a JM |
2526 | @html |
2527 | </p> | |
2528 | <hr> | |
2529 | @end html | |
2530 | @heading @anchor{mips-sony-sysv}mips-sony-sysv | |
2531 | Sony MIPS NEWS. This works in NEWSOS 5.0.1, but not in 5.0.2 (which | |
2532 | uses ELF instead of COFF). Support for 5.0.2 will probably be provided | |
2533 | soon by volunteers. In particular, the linker does not like the | |
2534 | code generated by GCC when shared libraries are linked in. | |
2535 | ||
2536 | ||
2537 | @html | |
2538 | </p> | |
2539 | <hr> | |
2540 | @end html | |
2541 | @heading @anchor{ns32k-encore}ns32k-encore | |
2542 | Encore ns32000 system. Encore systems are supported only under BSD. | |
2543 | ||
2544 | @html | |
2545 | </p> | |
2546 | <hr> | |
2547 | @end html | |
2548 | @heading @anchor{ns32k-*-genix}ns32k-*-genix | |
2549 | National Semiconductor ns32000 system. Genix has bugs in @code{alloca} | |
2550 | and @code{malloc}; you must get the compiled versions of these from GNU | |
2551 | Emacs. | |
2552 | ||
2553 | @html | |
2554 | </p> | |
2555 | <hr> | |
2556 | @end html | |
2557 | @heading @anchor{ns32k-sequent}ns32k-sequent | |
2558 | Go to the Berkeley universe before compiling. | |
2559 | ||
2560 | @html | |
2561 | </p> | |
2562 | <hr> | |
2563 | @end html | |
2564 | @heading @anchor{ns32k-utek}ns32k-utek | |
2565 | UTEK ns32000 system (``merlin''). The C compiler that comes with this | |
2566 | system cannot compile GNU CC; contact @samp{tektronix!reed!mason} to get | |
2567 | binaries of GNU CC for bootstrapping. | |
2568 | ||
2569 | ||
b8df899a JM |
2570 | @html |
2571 | </p> | |
2572 | <hr> | |
2573 | @end html | |
2574 | @heading @anchor{powerpc-*-elf}powerpc-*-elf, powerpc-*-sysv4 | |
2575 | PowerPC system in big endian mode, running System V.4. | |
2576 | ||
2577 | You can specify a default version for the @samp{-mcpu=}@var{cpu_type} | |
2578 | switch by using the configure option @samp{--with-cpu-}@var{cpu_type}. | |
2579 | ||
f42974dc DW |
2580 | @html |
2581 | </p> | |
2582 | <hr> | |
f42974dc | 2583 | @end html |
ef88b07d | 2584 | @heading @anchor{powerpc-*-linux-gnu*}powerpc-*-linux-gnu* |
f42974dc DW |
2585 | |
2586 | You will need | |
2587 | @uref{ftp://ftp.varesearch.com/pub/support/hjl/binutils,,binutils-2.9.4.0.8} | |
2588 | or newer for a working GCC. It is strongly recommended to recompile binutils | |
2589 | if you initially built it with gcc-2.7.2.x. | |
2590 | ||
b8df899a JM |
2591 | You can specify a default version for the @samp{-mcpu=}@var{cpu_type} |
2592 | switch by using the configure option @samp{--with-cpu-}@var{cpu_type}. | |
2593 | ||
2594 | @html | |
2595 | </p> | |
2596 | <hr> | |
2597 | @end html | |
2598 | @heading @anchor{powerpc-*-eabiaix}powerpc-*-eabiaix | |
2599 | Embedded PowerPC system in big endian mode with -mcall-aix selected as | |
2600 | the default. | |
2601 | ||
2602 | You can specify a default version for the @samp{-mcpu=}@var{cpu_type} | |
2603 | switch by using the configure option @samp{--with-cpu-}@var{cpu_type}. | |
2604 | ||
2605 | @html | |
2606 | </p> | |
2607 | <hr> | |
2608 | @end html | |
2609 | @heading @anchor{powerpc-*-eabisim}powerpc-*-eabisim | |
2610 | Embedded PowerPC system in big endian mode for use in running under the | |
2611 | PSIM simulator. | |
2612 | ||
2613 | You can specify a default version for the @samp{-mcpu=}@var{cpu_type} | |
2614 | switch by using the configure option @samp{--with-cpu-}@var{cpu_type}. | |
2615 | ||
2616 | @html | |
2617 | </p> | |
2618 | <hr> | |
2619 | @end html | |
2620 | @heading @anchor{powerpc-*-eabi}powerpc-*-eabi | |
2621 | Embedded PowerPC system in big endian mode. | |
2622 | ||
2623 | You can specify a default version for the @samp{-mcpu=}@var{cpu_type} | |
2624 | switch by using the configure option @samp{--with-cpu-}@var{cpu_type}. | |
2625 | ||
2626 | @html | |
2627 | </p> | |
2628 | <hr> | |
2629 | @end html | |
2630 | @heading @anchor{powerpcle-*-elf}powerpcle-*-elf, powerpcle-*-sysv4 | |
2631 | PowerPC system in little endian mode, running System V.4. | |
2632 | ||
2633 | You can specify a default version for the @samp{-mcpu=}@var{cpu_type} | |
2634 | switch by using the configure option @samp{--with-cpu-}@var{cpu_type}. | |
2635 | ||
2636 | @html | |
2637 | </p> | |
2638 | <hr> | |
2639 | @end html | |
2640 | @heading @anchor{powerpcle-*-eabisim}powerpcle-*-eabisim | |
2641 | Embedded PowerPC system in little endian mode for use in running under | |
2642 | the PSIM simulator. | |
2643 | ||
2644 | @html | |
2645 | </p> | |
2646 | <hr> | |
2647 | @end html | |
2648 | @heading @anchor{powerpcle-*-eabi}powerpcle-*-eabi | |
2649 | Embedded PowerPC system in little endian mode. | |
2650 | ||
2651 | You can specify a default version for the @samp{-mcpu=}@var{cpu_type} | |
2652 | switch by using the configure option @samp{--with-cpu-}@var{cpu_type}. | |
2653 | ||
2654 | @html | |
2655 | </p> | |
2656 | <hr> | |
2657 | @end html | |
2658 | @heading @anchor{powerpcle-*-winnt}powerpcle-*-winnt, powerpcle-*-pe | |
2659 | PowerPC system in little endian mode running Windows NT. | |
2660 | ||
2661 | You can specify a default version for the @samp{-mcpu=}@var{cpu_type} | |
2662 | switch by using the configure option @samp{--with-cpu-}@var{cpu_type}. | |
2663 | ||
2664 | @html | |
2665 | </p> | |
2666 | <hr> | |
2667 | @end html | |
2668 | @heading @anchor{romp-*-aos}romp-*-aos, romp-*-mach | |
2669 | The only operating systems supported for the IBM RT PC are AOS and | |
2670 | MACH. GNU CC does not support AIX running on the RT. We recommend you | |
2671 | compile GNU CC with an earlier version of itself; if you compile GNU CC | |
2672 | with @code{hc}, the Metaware compiler, it will work, but you will get | |
2673 | mismatches between the stage 2 and stage 3 compilers in various files. | |
2674 | These errors are minor differences in some floating-point constants and | |
2675 | can be safely ignored; the stage 3 compiler is correct. | |
f42974dc DW |
2676 | |
2677 | @html | |
2678 | </p> | |
2679 | <hr> | |
f42974dc | 2680 | @end html |
ef88b07d | 2681 | @heading @anchor{*-*-solaris*}*-*-solaris* |
f42974dc DW |
2682 | |
2683 | Starting with Solaris, Sun does not ship a C compiler any more. To | |
2684 | bootstrap and install GCC you first have to install a pre-built | |
2685 | compiler, see our @uref{binaries.html,,binaries page} for | |
2686 | details. | |
2687 | ||
e6855a2d MM |
2688 | You must use GNU Make to build GCC on Solaris 2. If you don't have GNU |
2689 | Make installed, you can use the prebuilt compiler mentioned above to | |
2690 | build it. | |
2691 | ||
f42974dc DW |
2692 | Sun as 4.X is broken in that it cannot cope with long symbol names. |
2693 | A typical error message might look similar to the following: | |
2694 | ||
2695 | @samp{/usr/ccs/bin/as: "/var/tmp/ccMsw135.s", line 11041: | |
2696 | error: can't compute value of an expression involving an external symbol.} | |
2697 | ||
e6855a2d MM |
2698 | This is Sun bug 4237974. This is fixed with patch 108908-02 and has |
2699 | been fixed in later (5.x) versions of the assembler. | |
b8df899a JM |
2700 | |
2701 | @html | |
2702 | <p> | |
2703 | <hr> | |
2704 | @end html | |
2705 | @heading @anchor{sparc-sun-*}sparc-sun-* | |
2706 | Sometimes on a Sun 4 you may observe a crash in the program | |
2707 | @code{genflags} or @code{genoutput} while building GCC. This is said to | |
2708 | be due to a bug in @code{sh}. You can probably get around it by running | |
2709 | @code{genflags} or @code{genoutput} manually and then retrying the | |
2710 | @code{make}. | |
2711 | ||
f42974dc DW |
2712 | @html |
2713 | <p> | |
2714 | <hr> | |
f42974dc | 2715 | @end html |
ef88b07d | 2716 | @heading @anchor{sparc-sun-solaris*}sparc-sun-solaris* |
b8df899a JM |
2717 | On Solaris 2, executables of GCC version 2.0.2 are commonly |
2718 | available, but they have a bug that shows up when compiling current | |
2719 | versions of GCC: undefined symbol errors occur during assembly if you | |
2720 | use @samp{-g}. | |
2721 | ||
2722 | The solution is to compile the current version of GCC without | |
2723 | @samp{-g}. That makes a working compiler which you can use to recompile | |
2724 | with @samp{-g}. | |
2725 | ||
2726 | Solaris 2 comes with a number of optional OS packages. Some of these | |
2727 | packages are needed to use GCC fully. If you did not install all | |
2728 | optional packages when installing Solaris, you will need to verify that | |
2729 | the packages that GCC needs are installed. | |
2730 | ||
2731 | To check whether an optional package is installed, use | |
2732 | the @code{pkginfo} command. To add an optional package, use the | |
2733 | @code{pkgadd} command. For further details, see the Solaris | |
2734 | documentation. | |
2735 | ||
2736 | For Solaris 2.0 and 2.1, GCC needs six packages: @samp{SUNWarc}, | |
2737 | @samp{SUNWbtool}, @samp{SUNWesu}, @samp{SUNWhea}, @samp{SUNWlibm}, and | |
2738 | @samp{SUNWtoo}. | |
2739 | ||
2740 | For Solaris 2.2, GCC needs an additional seventh package: @samp{SUNWsprot}. | |
2741 | ||
2742 | On Solaris 2, trying to use the linker and other tools in | |
2743 | @file{/usr/ucb} to install GCC has been observed to cause trouble. | |
2744 | For example, the linker may hang indefinitely. The fix is to remove | |
2745 | @file{/usr/ucb} from your @code{PATH}. | |
f42974dc DW |
2746 | |
2747 | binutils 2.9.1 has known bugs on this platform. We recommend to use | |
2748 | binutils 2.10 or the vendor tools (Sun as, Sun ld). | |
2749 | ||
2750 | Unfortunately, C++ shared libraries, including libstdc++, won't work | |
2751 | properly if assembled with Sun as: the linker will complain about | |
2752 | relocations in read-only sections, in the definition of virtual | |
2753 | tables. Also, Sun as fails to process long symbols resulting from | |
2754 | mangling template-heavy C++ function names. | |
2755 | ||
2756 | ||
2757 | @html | |
2758 | </p> | |
2759 | <hr> | |
f42974dc | 2760 | @end html |
ef88b07d | 2761 | @heading @anchor{sparc-sun-solaris2.7}sparc-sun-solaris2.7 |
f42974dc DW |
2762 | |
2763 | Sun patch 107058-01 (1999-01-13) for SPARC Solaris 7 triggers a bug in | |
2764 | the dynamic linker. This problem (Sun bug 4210064) affects GCC 2.8 | |
2765 | and later, including all EGCS releases. Sun formerly recommended | |
2766 | 107058-01 for all Solaris 7 users, but around 1999-09-01 it started to | |
2767 | recommend it only for people who use Sun's compilers. | |
2768 | ||
2769 | Here are some workarounds to this problem: | |
2770 | @itemize @bullet | |
2771 | @item | |
2772 | Do not install Sun patch 107058-01 until after Sun releases a | |
2773 | complete patch for bug 4210064. This is the simplest course to take, | |
2774 | unless you must also use Sun's C compiler. Unfortunately 107058-01 | |
2775 | is preinstalled on some new Solaris-based hosts, so you may have to | |
2776 | back it out. | |
2777 | ||
2778 | @item | |
2779 | Copy the original, unpatched Solaris 7 | |
2780 | @command{/usr/ccs/bin/as} into | |
2781 | @command{/usr/local/lib/gcc-lib/sparc-sun-solaris2.7/2.95.1/as}, | |
2782 | adjusting the latter name to fit your local conventions and software | |
2783 | version numbers. | |
2784 | ||
2785 | @item | |
2786 | Install Sun patch 106950-03 (1999-05-25) or later. Nobody with | |
2787 | both 107058-01 and 106950-03 installed has reported the bug with GCC | |
2788 | and Sun's dynamic linker. This last course of action is riskiest, | |
2789 | for two reasons. First, you must install 106950 on all hosts that | |
2790 | run code generated by GCC; it doesn't suffice to install it only on | |
2791 | the hosts that run GCC itself. Second, Sun says that 106950-03 is | |
2792 | only a partial fix for bug 4210064, but Sun doesn't know whether the | |
2793 | partial fix is adequate for GCC. Revision -08 or later should fix | |
2794 | the bug, but (as of 1999-10-06) it is still being tested. | |
2795 | @end itemize | |
2796 | ||
2797 | ||
2798 | @html | |
2799 | <p> | |
2800 | <hr> | |
f42974dc DW |
2801 | <!-- ripped from the same FAQ that I answered --> |
2802 | @end html | |
ef88b07d | 2803 | @heading @anchor{*-sun-solaris2.8}*-sun-solaris2.8 |
f42974dc DW |
2804 | |
2805 | Sun bug 4296832 turns up when compiling X11 headers with GCC 2.95 or | |
2806 | newer: g++ will complain that types are missing. These headers assume | |
2807 | that omitting the type means 'int'; this assumption worked for C89 but | |
2808 | is wrong for C++, and is now wrong for C99 also. | |
2809 | ||
2810 | g++ accepts such (illegal) constructs with the option @option{-fpermissive}; it | |
2811 | will assume that any missing type is 'int' (as defined by C89). | |
2812 | ||
9a3db543 | 2813 | For Solaris 8, this is fixed by revision 24 or later of patch 108652 |
f42974dc DW |
2814 | (for SPARCs) or 108653 (for Intels). |
2815 | ||
2816 | ||
2817 | @html | |
2818 | <p> | |
2819 | <hr> | |
f42974dc | 2820 | @end html |
ef88b07d | 2821 | @heading @anchor{sunv5}Sun V5.0 Compiler Bugs |
f42974dc DW |
2822 | |
2823 | The Sun V5.0 compilers are known to mis-compile GCC 2.95 and GCC 2.95.1, | |
2824 | which in turn causes GCC to fail its bootstrap comparison test. | |
2825 | GCC 2.95.2 has a workaround. | |
2826 | ||
2827 | ||
2828 | @html | |
2829 | </p> | |
2830 | <hr> | |
f42974dc | 2831 | @end html |
ef88b07d | 2832 | @heading @anchor{sparc-sun-sunos*}sparc-sun-sunos* |
f42974dc DW |
2833 | |
2834 | A bug in the SunOS4 linker will cause it to crash when linking | |
2835 | -fPIC compiled objects (and will therefore not allow you to build | |
2836 | shared libraries). | |
2837 | ||
2838 | To fix this problem you can either use the most recent version of | |
2839 | binutils or get the latest SunOS4 linker patch (patch ID 100170-10) | |
2840 | from Sun's patch site. | |
2841 | ||
2842 | ||
2843 | @html | |
2844 | </p> | |
2845 | <hr> | |
f42974dc | 2846 | @end html |
ef88b07d | 2847 | @heading @anchor{sparc-unknown-linux-gnulibc1}sparc-unknown-linux-gnulibc1 |
f42974dc DW |
2848 | |
2849 | It has been reported that you might need | |
2850 | @uref{ftp://ftp.yggdrasil.com/private/hjl,,binutils-2.8.1.0.23} | |
2851 | for this platform, too. | |
2852 | ||
2853 | ||
2854 | @html | |
2855 | </p> | |
2856 | <hr> | |
f42974dc | 2857 | @end html |
ef88b07d | 2858 | @heading @anchor{sparc64-*-*}sparc64-*-* |
f42974dc DW |
2859 | |
2860 | GCC version 2.95 is not able to compile code correctly for | |
2861 | @code{sparc64} targets. Users of the Linux kernel, at least, | |
2862 | 12~can use the @code{sparc32} program to start up a new shell | |
2863 | invocation with an environment that causes @command{configure} to | |
38209993 | 2864 | recognize (via @samp{uname -a}) the system as @var{sparc-*-*} instead. |
f42974dc DW |
2865 | |
2866 | ||
b8df899a JM |
2867 | @html |
2868 | </p> | |
2869 | <hr> | |
2870 | @end html | |
2871 | @heading @anchor{#*-*-sysv*}*-*-sysv* | |
2872 | On System V release 3, you may get this error message | |
2873 | while linking: | |
2874 | ||
2875 | @smallexample | |
2876 | ld fatal: failed to write symbol name @var{something} | |
2877 | in strings table for file @var{whatever} | |
2878 | @end smallexample | |
2879 | ||
2880 | This probably indicates that the disk is full or your ULIMIT won't allow | |
2881 | the file to be as large as it needs to be. | |
2882 | ||
2883 | This problem can also result because the kernel parameter @code{MAXUMEM} | |
2884 | is too small. If so, you must regenerate the kernel and make the value | |
2885 | much larger. The default value is reported to be 1024; a value of 32768 | |
2886 | is said to work. Smaller values may also work. | |
2887 | ||
2888 | On System V, if you get an error like this, | |
2889 | ||
2890 | @example | |
2891 | /usr/local/lib/bison.simple: In function `yyparse': | |
2892 | /usr/local/lib/bison.simple:625: virtual memory exhausted | |
2893 | @end example | |
2894 | ||
2895 | @noindent | |
2896 | that too indicates a problem with disk space, ULIMIT, or @code{MAXUMEM}. | |
2897 | ||
2898 | ||
2899 | @html | |
2900 | </p> | |
2901 | <hr> | |
2902 | @end html | |
2903 | @heading @anchor{vax-dec-ultrix}vax-dec-ultrix | |
2904 | Don't try compiling with Vax C (@code{vcc}). It produces incorrect code | |
2905 | in some cases (for example, when @code{alloca} is used). | |
2906 | ||
2907 | Meanwhile, compiling @file{cp/parse.c} with pcc does not work because of | |
2908 | an internal table size limitation in that compiler. To avoid this | |
2909 | problem, compile just the GNU C compiler first, and use it to recompile | |
2910 | building all the languages that you want to run. | |
2911 | ||
2912 | @html | |
2913 | </p> | |
2914 | <hr> | |
2915 | @end html | |
2916 | @heading @anchor{we32k-*-*}we32k-*-* | |
2917 | These computers are also known as the 3b2, 3b5, 3b20 and other similar | |
2918 | names. (However, the 3b1 is actually a 68000.) | |
2919 | ||
2920 | Don't use @samp{-g} when compiling with the system's compiler. The | |
2921 | system's linker seems to be unable to handle such a large program with | |
2922 | debugging information. | |
2923 | ||
2924 | The system's compiler runs out of capacity when compiling @file{stmt.c} | |
2925 | in GNU CC. You can work around this by building @file{cpp} in GNU CC | |
2926 | first, then use that instead of the system's preprocessor with the | |
2927 | system's C compiler to compile @file{stmt.c}. Here is how: | |
2928 | ||
2929 | @smallexample | |
2930 | mv /lib/cpp /lib/cpp.att | |
2931 | cp cpp /lib/cpp.gnu | |
2932 | echo '/lib/cpp.gnu -traditional $@{1+"$@@"@}' > /lib/cpp | |
2933 | chmod +x /lib/cpp | |
2934 | @end smallexample | |
2935 | ||
2936 | The system's compiler produces bad code for some of the GNU CC | |
2937 | optimization files. So you must build the stage 2 compiler without | |
2938 | optimization. Then build a stage 3 compiler with optimization. | |
2939 | That executable should work. Here are the necessary commands: | |
2940 | ||
2941 | @smallexample | |
2942 | make LANGUAGES=c CC=stage1/xgcc CFLAGS="-Bstage1/ -g" | |
2943 | make stage2 | |
2944 | make CC=stage2/xgcc CFLAGS="-Bstage2/ -g -O" | |
2945 | @end smallexample | |
2946 | ||
2947 | You may need to raise the ULIMIT setting to build a C++ compiler, | |
2948 | as the file @file{cc1plus} is larger than one megabyte. | |
2949 | ||
f42974dc DW |
2950 | @html |
2951 | </p> | |
2952 | <hr> | |
f42974dc | 2953 | @end html |
ef88b07d | 2954 | @heading @anchor{windows}Microsoft Windows (32 bit) |
f42974dc DW |
2955 | |
2956 | A port of GCC 2.95.x is included with the | |
2957 | @uref{http://www.cygwin.com/,,Cygwin environment}. | |
2958 | ||
2959 | Current (as of early 2001) snapshots of GCC will build under Cygwin | |
2960 | without modification. | |
2961 | ||
2962 | @html | |
2963 | </p> | |
2964 | <hr> | |
f42974dc | 2965 | @end html |
ef88b07d | 2966 | @heading @anchor{os2}OS/2 |
f42974dc DW |
2967 | |
2968 | GCC does not currently support OS/2. However, Andrew Zabolotny has been | |
2969 | working on a generic OS/2 port with pgcc. The current code code can be found | |
2970 | at @uref{http://www.goof.com/pcg/os2/,,http://www.goof.com/pcg/os2/}. | |
2971 | ||
2972 | An older copy of GCC 2.8.1 is included with the EMX tools available at | |
2973 | @uref{ftp://ftp.leo.org/pub/comp/os/os2/leo/devtools/emx+gcc/,, | |
2974 | ftp://ftp.leo.org/pub/comp/os/os2/leo/devtools/emx+gcc/}. | |
2975 | ||
2976 | @html | |
2977 | </p> | |
2978 | <hr> | |
f42974dc | 2979 | @end html |
ef88b07d | 2980 | @heading @anchor{older}Older systems |
f42974dc DW |
2981 | |
2982 | GCC contains support files for many older (1980s and early | |
2983 | 1990s) Unix variants. For the most part, support for these systems | |
2984 | has not been deliberately removed, but it has not been maintained for | |
2985 | several years and may suffer from bitrot. Support from some systems | |
2986 | has been removed from GCC 3: fx80, ns32-ns-genix, pyramid, tahoe, | |
2987 | gmicro, spur; most of these targets had not been updated since GCC | |
2988 | version 1. | |
2989 | ||
2990 | Support for older systems as targets for cross-compilation is less | |
2991 | problematic than support for them as hosts for GCC; if an enthusiast | |
2992 | wishes to make such a target work again (including resurrecting any | |
2993 | of the targets that never worked with GCC 2, starting from the last | |
2994 | CVS version before they were removed), patches | |
2995 | @uref{../contribute.html,,following the usual requirements} | |
2996 | would be likely to be accepted, since they should not affect the | |
2997 | support for more modern targets. | |
2998 | ||
2999 | Support for old systems as hosts for GCC can cause problems if the | |
3000 | workarounds for compiler, library and operating system bugs affect the | |
3001 | cleanliness or maintainability of the rest of GCC. In some cases, to | |
3002 | bring GCC up on such a system, if still possible with current GCC, may | |
3003 | require first installing an old version of GCC which did work on that | |
3004 | system, and using it to compile a more recent GCC, to avoid bugs in | |
3005 | the vendor compiler. Old releases of GCC 1 and GCC 2 are available in | |
3006 | the old-releases directory on the | |
3007 | @uref{../mirrors.html,,GCC mirror sites}. Header bugs may generally | |
38209993 LG |
3008 | be avoided using @command{fixincludes}, but bugs or deficiencies in |
3009 | libraries and the operating system may still cause problems. | |
f42974dc DW |
3010 | |
3011 | For some systems, old versions of GNU binutils may also be useful, | |
3012 | and are available from pub/binutils/old-releases on | |
3013 | @uref{http://sources.redhat.com/mirrors.html,,sources.redhat.com mirror sites}. | |
3014 | ||
3015 | Some of the information on specific systems above relates to | |
3016 | such older systems, but much of the information | |
3017 | about GCC on such systems (which may no longer be applicable to | |
3018 | current GCC) is to be found in the GCC texinfo manual. | |
3019 | ||
3020 | @html | |
3021 | </p> | |
3022 | <hr> | |
f42974dc | 3023 | @end html |
ef88b07d | 3024 | @heading @anchor{elf_targets}all ELF targets (SVR4, Solaris, etc.) |
f42974dc | 3025 | |
38209993 LG |
3026 | C++ support is significantly better on ELF targets if you use the |
3027 | @uref{./configure.html#with-gnu-ld,,GNU linker}; duplicate copies of | |
3028 | inlines, vtables and template instantiations will be discarded | |
3029 | automatically. | |
f42974dc DW |
3030 | |
3031 | ||
3032 | @html | |
3033 | </p> | |
3034 | <hr> | |
3035 | <p> | |
3036 | @end html | |
3037 | @ifhtml | |
3038 | @uref{./index.html,,Return to the GCC Installation page} | |
3039 | @end ifhtml | |
3040 | @end ifset | |
3041 | ||
3042 | @c *************************************************************************** | |
3043 | @c Part 6 The End of the Document | |
3044 | @ifinfo | |
3045 | @comment node-name, next, previous, up | |
3046 | @node Concept Index, , Specific, Top | |
3047 | @end ifinfo | |
3048 | ||
3049 | @ifinfo | |
3050 | @unnumbered Concept Index | |
3051 | ||
3052 | @printindex cp | |
3053 | ||
3054 | @contents | |
3055 | @end ifinfo | |
3056 | @bye |