1 \input texinfo.tex @c -*-texinfo-*-
4 @setfilename install.info
5 @settitle Installing GCC
10 @c Specify title for specific html page
12 @settitle Installing GCC
15 @settitle Host/Target specific installation notes for GCC
18 @settitle Downloading GCC
21 @settitle Installing GCC: Configuration
24 @settitle Installing GCC: Building
27 @settitle Installing GCC: Testing
29 @ifset finalinstallhtml
30 @settitle Installing GCC: Final installation
33 @settitle Installing GCC: Binaries
36 @comment $Id: install.texi,v 1.8 2001/05/28 07:55:13 gerald Exp $
37 @c Copyright (C) 2001 Free Software Foundation, Inc.
38 @c *** Converted to texinfo by Dean Wakerley, dean@wakerley.com
40 @c Include everything if we're not making html
52 @c Part 2 Summary Description and Copyright
55 Copyright @copyright{} 2001 Free Software Foundation, Inc.
58 @c Part 3 Titlepage and Copyright
61 @comment The title is printed in a large font.
62 @center @titlefont{Sample Title}
64 @c The following two commands start the copyright page.
67 Copyright @copyright{} 2001 Free Software Foundation, Inc.
70 @c Part 4 Top node and Master Menu
73 @comment node-name, next, Previous, up
76 * Installing GCC:: This document describes the generic installation
77 procedure for GCC as well as detailing some target
78 specific installation instructions.
80 * Specific:: Host/target specific installation notes for GCC.
81 * Binaries:: Where to get pre-compiled binaries.
83 * Concept Index:: This index has two entries.
87 @c Part 5 The Body of the Document
88 @c ***Installing GCC**********************************************************
90 @comment node-name, next, previous, up
91 @node Installing GCC, Binaries, , Top
95 <h1 align="center">Installing GCC</h1>
98 @chapter Installing GCC
101 The latest version of this document is always available at
102 @uref{http://gcc.gnu.org/install/,,http://gcc.gnu.org/install/}.
104 This document describes the generic installation procedure for GCC as well
105 as detailing some target specific installation instructions.
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.
113 @emph{Before} starting the build/install procedure please check the
115 @xref{Specific, host/target specific installation notes}.
118 @uref{specific.html,,host/target specific installation notes}.
120 We recommend you browse the entire generic installation instructions before
123 The installation procedure itself is broken into five steps.
127 * Downloading the source::
130 * Testing:: (optional)
137 @uref{download.html,,Downloading the source}
139 @uref{configure.html,,Configuration}
141 @uref{build.html,,Building}
143 @uref{test.html,,Testing} (optional)
145 @uref{finalinstall.html,,Final install}
149 Please note that GCC does not support `@code{make uninstall}' and probably
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
152 remove that directory when you do not need that specific version of GCC any longer.
159 @uref{./index.html,,Return to the GCC Installation page}
163 @c ***Downloading the source**************************************************
165 @comment node-name, next, previous, up
166 @node Downloading the source, Configuration, , Installing GCC
170 <h1 align="center">Downloading GCC</h1>
173 @chapter Downloading GCC
175 @cindex Downloading GCC
176 @cindex Downloading the Source
178 GCC is distributed via CVS and FTP tarballs compressed with gzip or
179 bzip2. It is possible to download a full distribution or specific
182 Please refer to our @uref{http://gcc.gnu.org/releases.html,,releases web page}
183 for information on how to obtain GCC.
185 The full distribution includes the C, C++, Objective-C, Fortran, Java,
186 and Chill compilers. The full distribution also includes runtime libraries
187 for C++, Objective-C and Fortran. In the future the GNU compiler testsuites
188 will be included in the full distribution.
190 If you choose to download specific components, you must download the core
191 gcc distribution plus any language specific distributions you wish to
192 use. The core distribution includes the C language front-end as well as the
193 shared components. Each language has a tarball which includes the language
194 front-end as well as the language runtime (when appropriate).
196 Unpack the core distribution as well as any language specific
197 distributions in the same directory.
199 If you also intend to build binutils (either to upgrade an existing
200 installation or for use in place of the corresponding tools of your
201 OS), unpack the binutils distribution either in the same directory or
202 a separate one. In the latter case, add symbolic links to any
203 components of the binutils you intend to build alongside the compiler
204 (bfd, binutils, gas, gprof, ld, opcodes,...) to the directory containing
212 @uref{./index.html,,Return to the GCC Installation page}
216 @c ***Configuration***********************************************************
218 @comment node-name, next, previous, up
219 @node Configuration, Building, Downloading the source, Installing GCC
223 <h1 align="center">Installing GCC: Configuration</h1>
226 @chapter Installing GCC: Configuration
228 @cindex Configuration
229 @cindex Installing GCC: Configuration
231 Like most GNU software, GCC must be configured before it can be built.
232 This document describes the recommended configuration procedure
233 for both native and cross targets.
235 We use @emph{srcdir} to refer to the toplevel source directory for
236 GCC; we use @emph{objdir} to refer to the toplevel build/object directory.
238 First, we @strong{highly} recommend that GCC be built into a
239 separate directory than the sources which does @strong{not} reside
240 within the source tree. This is how we generally build GCC; building
241 where @emph{srcdir} == @emph{objdir} should still work, but doesn't
242 get extensive testing; building where @emph{objdir} is a subdirectory
243 of @emph{srcdir} is unsupported.
245 Second, when configuring a native system, either ``@command{cc}'' or
246 ``@command{gcc}'' must be in your path or you must set @command{CC} in
247 your environment before running configure. Otherwise the configuration
253 % mkdir @emph{objdir}
255 % @emph{srcdir}/configure @strong{[target] [options]}
259 @strong{target specification}
262 GCC has code to correctly determine the correct value for @strong{target}
263 for nearly all native systems. Therefore, we highly recommend you not
264 provide a configure target when configuring a native compiler.
267 @strong{target} must be specified as @option{--target=}@emph{target}
268 when configuring a cross compiler; examples of valid targets would be
269 i960-rtems, m68k-coff, sh-elf, etc.
272 Specifying just @strong{target} instead of @option{--target=}@emph{target}
273 implies that the host defaults to @strong{target}.
277 @strong{options specification}
279 Use @strong{options} to override several configure time options for
280 GCC. A partial list of supported @option{options}:
284 @option{--prefix=}@emph{dirname} @minus{}@minus{} Specify the toplevel installation
285 directory. This is the recommended way to install the tools into a directory
286 other than the default. The toplevel installation directory defaults to
289 We @strong{highly} recommend against @emph{dirname} being the same or a
290 subdirectory of @emph{objdir} or vice versa.
292 These additional options control where certain parts of the distribution
293 are installed. Normally you should not need to use these options.
296 @option{--with-local-prefix=}@emph{dirname} @minus{}@minus{} Specify the installation
297 directory for local include files. The default is @code{/usr/local}.
300 @option{--with-gxx-include-dir=}@emph{dirname} @minus{}@minus{} Specify the installation
301 directory for g++ header files. The default is @command{/usr/local/include/g++}.
306 @option{--enable-shared} @minus{}@minus{} Build shared versions of the C++ runtime
307 libraries if supported. This is the default on most systems. Use @option{--disable-shared}
308 for static libraries. Note that up to the gcc version 2.95.x series, static
309 libraries were the default on all systems.
313 <a name="with-gnu-as">@option{--with-gnu-as}</a>
315 @minus{}@minus{} Specify that the compiler should assume that the
316 assembler it finds is the GNU assembler. However, this does not modify the rules to find an
317 assembler and will result in confusion if found assembler is not actually the GNU assembler.
318 If you have more than one assembler installed on your system, you may want to use this option
319 in connection with @option{--with-as=/path/to/gas}.
322 @option{--with-as=@emph{/path/to/as}} @minus{}@minus{} Specify that the compiler should use the
323 assembler pointed to by @emph{pathname}, rather than the one found by the standard rules to
324 find an assembler, which are:
327 Check the @emph{$exec_prefix/lib/gcc-lib/$target/$version} directory, where @emph{$exec_prefix}
328 defaults to @emph{$prefix} which defaults to @file{/usr/local} unless overridden by the
329 @option{--prefix=/pathname} switch described above. @emph{$target} is the target system triple,
330 such as @emph{sparc-sun-solaris2.7}, and @emph{$version} denotes the GCC version, such as 2.95.2.
332 Check operating system specific directories (e.g. @file{/usr/ccs/bin} on Sun Solaris).
334 Note that these rules do not check for the value of @emph{$PATH}. You may want to use
335 @option{--with-as} if no assembler is installed in the directories listed above, or if you have
336 multiple assemblers installed and want to choose one that is not found by the above rules.
340 <a name="with-gnu-ld">@option{--with-gnu-ld}</a>
342 @minus{}@minus{} Same as @uref{#with-gnu-as,,@option{--with-gnu-as}} but for linker.
346 @option{--with-ld=@emph{/path/to/ld}} @minus{}@minus{} Same as @option{--with-as}, but for the
350 @option{--with-stabs} @minus{}@minus{} Specify that stabs debugging information should be used
351 instead of whatever format the host normally uses. Normally GCC uses the
352 same debug format as the host system.
355 @option{--enable-multilib} @minus{}@minus{} Specify that multiple target libraries
356 should be built to support different target variants, calling conventions,
357 etc. This is the default.
360 @option{--enable-threads} @minus{}@minus{} Specify that the target supports threads.
361 This affects the Objective-C compiler and runtime library, and exception
362 handling for other languages like C++ and Java.
365 @option{--enable-threads=}@emph{lib} @minus{}@minus{} Specify that @emph{lib} is the thread
366 support library. This affects the Objective-C compiler and runtime library,
367 and exception handling for other languages like C++ and Java.
370 @option{--with-cpu=}@emph{cpu} @minus{}@minus{} Specify which cpu variant the
371 compiler should generate code for by default. This is currently
372 only supported on the some ports, specifically arm, powerpc, and
373 SPARC. If configure does not recognize the model name (e.g. arm700,
374 603e, or ultrasparc) you provide, please check the configure script
375 for a complete list of supported models.
378 @option{--enable-target-optspace} @minus{}@minus{} Specify that target libraries
379 should be optimized for code space instead of code speed. This is the
380 default for the m32r platform.
383 @option{--enable-cpp} @minus{}@minus{} Specify that a shell script which emulates
384 traditional cpp functionality should be installed.
387 @option{--enable-cpplib} @minus{}@minus{} Specify that the functionality of
388 CPP should be integrated into the compiler itself. This option is
389 not supported by snapshots since November 2000. In snapshots where
390 it is supported, it is not enabled by default, except for snapshots
391 very close to November 2000.
394 @option{--without-fast-fixincludes} @minus{}@minus{} Specify that the old, slower
395 method of fixing the system header files should be used.
396 EGCS 1.1.x and older releases default to the slow version. GCC 2.95 and
397 newer releases will default to the fast version.
400 @option{--enable-version-specific-runtime-libs} @minus{}@minus{} Specify that runtime
401 libraries should be installed in the compiler specific subdirectory
402 (@option{$@{libsubdir@}}) rather than the usual places.
403 In addition, libstdc++'s include files will be installed in
404 @option{$@{libsubdir@}/include/g++} unless you overruled it by using
405 @option{--with-gxx-include-dir=}@emph{dirname}.
406 Using this option is particularly useful if you intend to use several
407 versions of GCC in parallel. This is currently supported by @option{libf2c}
408 and @option{libstdc++}.
411 @option{--enable-languages=}@emph{lang1}@option{,}@emph{lang2}@option{,...}
412 @minus{}@minus{} Specify that only a particular subset of compilers and their runtime libraries
413 should be built. For a list of valid values for @emph{lang}@option{x} you can issue
414 the following command in the @option{gcc} directory of your GCC source tree:@*
415 @command{grep language= */config-lang.in}@*
416 Currently, you can use any of the following: @code{c++}, @code{f77}, @code{java} and @code{objc}.
417 @code{CHILL} is not currently maintained, and will almost
418 certainly fail to compile. Note that this switch does not work with
419 EGCS 1.1.2 or older versions of egcs. It is supported in GCC 2.95
420 and newer versions.@*
421 If you do not pass this flag, all languages available in the @code{gcc} sub-tree
422 will be configured. Re-defining LANGUAGES when calling @command{make bootstrap}
423 @strong{*does not*} work anymore, as those language sub-directories might not have been
427 @option{--disable-libgcj} @minus{}@minus{} Specify that the run-time libraries
428 used by GCJ should not be built. This is useful in case you intend
429 to use GCJ with some other run-time, or you're going to install it
430 separately, or it just happens not to build on your particular
431 machine. In general, if the Java front-end is enabled, the GCJ
432 libraries will be enabled too, unless they're known to not work on
433 the target platform. If GCJ is enabled but libgcj isn't built, you
434 may need to port it; in this case, before modifying the top-level
435 configure.in so that libgcj is enabled by default on this platform,
436 you may use @option{--enable-libgcj} to override the default.
439 @option{--with-dwarf2} @minus{}@minus{} Specify that the compiler should use DWARF2
440 debugging information as the default.
443 Some options which only apply to building cross compilers:
446 @option{--with-headers=}@emph{dir} @minus{}@minus{} Specifies a directory which has
447 target include files.
448 @emph{This options is required} when building a cross
449 compiler, if @code{$@{prefix@}/$@{target@}/sys-include} doesn't pre-exist.
450 These include files will be copied into the @code{gcc} install directory.
451 Fixincludes will be run on these files to make them compatible with @command{gcc}.
453 @option{--with-libs=}@emph{``dir1 dir2 ... dirN''} @minus{}@minus{} Specifies a list of
454 directories which contain the target runtime libraries. These libraries will
455 be copied into the @code{gcc} install directory.
457 @option{--with-newlib} @minus{}@minus{} Specifies that ``newlib'' is being used as the target
458 C library. This causes @code{__eprintf} to be omitted from libgcc.a on the
459 assumption that it will be provided by newlib.
462 Note that each @option{--enable} option has a corresponding @option{--disable} option and
463 that each @option{--with} option has a corresponding @option{--without} option.
470 @uref{./index.html,,Return to the GCC Installation page}
474 @c ***Building****************************************************************
476 @comment node-name, next, previous, up
477 @node Building, Testing, Configuration, Installing GCC
481 <h1 align="center">Installing GCC: Building</h1>
486 @cindex Installing GCC: Building
488 Now that GCC is configured, you are ready to build the compiler and
491 We @strong{highly} recommend that GCC be built using GNU make;
492 other versions may work, then again they might not.
494 (For example, many broken versions of make will fail if you use the
495 recommended setup where @emph{objdir} is different from @emph{srcdir}.)
498 @section Building a native compiler
500 For a native build issue the command `@code{make bootstrap}'. This
501 will build the entire GCC system, which includes the following steps:
505 Build host tools necessary to build the compiler such as texinfo, bison,
509 Build target tools for use by the compiler such as binutils (bfd,
510 binutils, gas, gprof, ld, and opcodes)@*
511 if they have been individually linked
512 or moved into the top level GCC source tree before configuring.
515 Perform a 3-stage bootstrap of the compiler.
518 Perform a comparison test of the stage2 and stage3 compilers.
521 Build runtime libraries using the stage3 compiler from the previous step.
525 If you are short on disk space you might consider `@code{make
526 bootstrap-lean}' instead. This is identical to `@code{make
527 bootstrap}' except that object files from the stage1 and
528 stage2 of the 3-stage bootstrap of the compiler are deleted as
529 soon as they are no longer needed.
532 If you want to save additional space during the bootstrap and in
533 the final installation as well, you can build the compiler binaries
534 without debugging information with ``@code{make CFLAGS='-O' LIBCFLAGS='-g
535 -O2' LIBCXXFLAGS='-g -O2 -fno-implicit-templates' bootstrap}''. This will save
536 roughly 40% of disk space both for the bootstrap and the final installation.
537 (Libraries will still contain debugging information.)
539 If you used the flag @code{--enable-languages=...} to restrict
540 the compilers to be built, only those you've actually enabled will be
541 built. This will of course only build those runtime libraries, for
542 which the particular compiler has been built. Please note,
543 that re-defining LANGUAGES when calling `@code{make bootstrap}'
544 @strong{*does not*} work anymore!
547 @section Building a cross compiler
549 We recommend reading the
550 @uref{http://www.objsw.com/CrossGCC/,,crossgcc FAQ}
551 for information about building cross compilers.
553 When building a cross compiler, it is not generally possible to do a
554 3-stage bootstrap of the compiler. This makes for an interesting problem
555 as parts of GCC can only be built with GCC.
557 To build a cross compiler, we first recommend building and installing a
558 native compiler. You can then use the native GCC compiler to build the
561 Assuming you have already installed a native copy of GCC and configured
562 your cross compiler, issue the command `@code{make}', which performs the
567 Build host tools necessary to build the compiler such as texinfo, bison,
571 Build target tools for use by the compiler such as binutils (bfd,
572 binutils, gas, gprof, ld, and opcodes)
573 if they have been individually linked or moved into the top level GCC source
574 tree before configuring.
577 Build the compiler (single stage only).
580 Build runtime libraries using the compiler from the previous step.
583 Note that if an error occurs in any step the make process will exit.
585 @section Building in parallel
587 If you have a multiprocessor system you can use `@code{make bootstrap
588 MAKE="make -j 2" -j 2}' or just `@code{make -j 2 bootstrap}'
589 for GNU Make 3.79 and above instead of just `@code{make bootstrap}'
590 when building GCC. You can use a bigger number instead of two if
591 you like. In most cases, it won't help to use a number bigger than
592 the number of processors in your machine.
599 @uref{./index.html,,Return to the GCC Installation page}
603 @c ***Testing*****************************************************************
605 @comment node-name, next, previous, up
606 @node Testing, Final install, Building, Installing GCC
610 <h1 align="center">Installing GCC: Testing</h1>
613 @chapter Installing GCC: Testing
616 @cindex Installing GCC: Testing
619 @strong{Please note that this is only applicable
620 to current development versions of GCC and GCC 3.0 or later.
621 GCC 2.95.x does not come with a testsuite.}
623 Before you install GCC, you might wish to run the testsuite. This
624 step is optional and may require you to download additional software.
626 First, you must have @uref{download.html,,downloaded the testsuites}.
627 The full distribution contains testsuites; only if you downloaded the
628 ``core'' compiler plus any front ends, you do not have the testsuites.
630 Second, you must have a @uref{http://www.gnu.org/software/dejagnu/,,current version of DejaGnu} installed;
631 dejagnu 1.3 is not sufficient.
633 Now you may need specific preparations:
637 In order to run the libio tests on targets which do not fully
638 support Unix/POSIX commands (e.g. Cygwin), the references to the dbz
639 directory have to be deleted from @code{libio/configure.in}.
642 The following environment variables must be set appropriately, as in
643 the following example (which assumes that DejaGnu has been installed
644 under @code{/usr/local}):
647 TCL_LIBRARY = /usr/local/share/tcl8.0
648 DEJAGNULIBS = /usr/local/share/dejagnu
651 On systems such as Cygwin, these paths are required to be actual
652 paths, not mounts or links; presumably this is due to some lack of
653 portability in the DejaGnu code.
657 Finally, you can run the testsuite (which may take a long time):
659 cd @emph{objdir}; make -k check
662 The testing process will try to test as many components in the GCC
663 distribution as possible, including the C, C++ and Fortran compilers as
664 well as the C++ runtime libraries.
666 @section How can I run the test suite on selected tests?
668 As a first possibility to cut down the number of tests that are run it is
669 possible to use `@code{make check-gcc}' or `@code{make check-g++}'
670 in the gcc subdirectory of the object directory. To further cut down the
671 tests the following is possible:
674 make check-gcc RUNTESTFLAGS="execute.exp <other options>"
677 This will run all gcc execute tests in the testsuite.
680 make check-g++ RUNTESTFLAGS="old-deja.exp=9805* <other options>"
683 This will run the g++ "old-deja" tests in the testsuite where the filename
686 The *.exp files are located in the testsuite directories of the GCC
687 source, the most important ones being compile.exp, execute.exp, dg.exp
688 and old-deja.exp. To get a list of the possible *.exp files, pipe the
689 output of `@code{make check}' into a file and look at the
690 "@code{Running ... .exp}" lines.
692 @section How to interpret test results
694 After the testsuite has run you'll find various *.sum and *.log
695 files in the testsuite subdirectories. The *.log files contain a
696 detailed log of the compiler invocations and the corresponding
697 results, the *.sum files summarize the results. These summaries list
698 all the tests that have been run with a corresponding status code:
702 PASS: the test passed as expected
704 XPASS: the test unexpectedly passed
706 FAIL: the test unexpectedly failed
708 XFAIL: the test failed as expected
710 UNSUPPORTED: the test is not supported on this platform
712 ERROR: the testsuite detected an error
714 WARNING: the testsuite detected a possible problem
717 It is normal for some tests to report unexpected failures. At the current time
718 our testing harness does not allow fine grained control over whether or not a
719 test is expected to fail. We expect to fix this problem in future releases.
722 @section Submitting test results
724 If you want to report the results to the GCC project, use the
725 @code{contrib/test_summary} shell script. Start it in the @emph{objdir} with
728 @emph{srcdir}/contrib/test_summary -p your_commentary.txt -m gcc-testresults@@gcc.gnu.org |sh
731 This script uses the @code{Mail} program to send the results, so
732 make sure it is in your @env{PATH}. The file @file{your_commentary.txt} is
733 prepended to the testsuite summary and should contain any special
734 remarks you have on your results or your build environment. Please
735 do not edit the testsuite result block or the subject line, as these
736 messages are automatically parsed and presented at the
737 @uref{http://gcc.gnu.org/testresults/,,GCC testresults} web
738 page. Here you can also gather information on how specific tests
739 behave on different platforms and compare them with your results. A
740 few failing testcases are possible even on released versions and you
741 should look here first if you think your results are unreasonable.
745 @c ***Final install***********************************************************
747 @comment node-name, next, previous, up
748 @node Final install, , Testing, Installing GCC
750 @ifset finalinstallhtml
752 <h1 align="center">Installing GCC: Final installation</h1>
755 @chapter Installing GCC: Final installation
758 Now that GCC has been built and tested, you can install it with
759 `@command{cd @emph{objdir}; make install}' for a native compiler or
760 `@command{cd @emph{objdir}; make install LANGUAGES="c c++"}' for
761 a cross compiler (note installing cross compilers will be easier in the
764 That step completes the installation of GCC; user level binaries can
765 be found in @code{@emph{prefix}/bin} where @code{@emph{prefix}} is the value you specified
766 with the @option{--prefix} to configure (or @file{/usr/local} by default).
768 If you don't mind, please quickly review the
769 @uref{http://gcc.gnu.org/gcc-2.95/buildstat.html,,build status page}.
770 If your system is not listed, send a note to
771 @uref{mailto:gcc@@gcc.gnu.org,,gcc@@gcc.gnu.org} indicating
772 that you successfully built and installed GCC.
774 Include the output from running @code{@emph{srcdir}/config.guess}. (Do not
775 send us the config.guess file itself, just the output from running
778 If you find a bug, please report it following our
779 @uref{../bugs.html,,bug reporting guidelines}.
786 @uref{./index.html,,Return to the GCC Installation page}
790 @c ***Binaries****************************************************************
792 @comment node-name, next, previous, up
793 @node Binaries, Specific, Installing GCC, Top
797 <h1 align="center">Installing GCC: Binaries</h1>
800 @chapter Installing GCC: Binaries
803 @cindex Installing GCC: Binaries
805 We are often asked about pre-compiled versions of GCC. While we cannot
806 provide these for all platforms, below you'll find links to binaries for
807 various platforms where creating them by yourself is not easy due to various
810 Please note that we did not create these binaries, nor do we
811 support them. If you have any problems installing them, please
812 contact their makers.
819 @uref{http://www-frec.bull.com/docs/download.htm,,Bull's Freeware and Shareware Archive for AIX};
822 @uref{http://aixpdlib.seas.ucla.edu,,UCLA Software Library for AIX};
826 DOS - @uref{http://www.delorie.com/djgpp/,,DJGPP};
829 @uref{http://hpux.cae.wisc.edu/,,HP-UX Porting Center};
832 @uref{http://www.sco.com/skunkware/devtools/index.html#gcc,,SCO OpenServer/Unixware};
835 Solaris (SPARC, Intel) - @uref{http://www.sunfreeware.com/,,Sunfreeware};
838 SGI - @uref{http://freeware.sgi.com/,,SGI Freeware};
841 Windows 95, 98, and NT:
844 The @uref{http://sources.redhat.com/cygwin/,,Cygwin} project;
846 @uref{http://www.xraylith.wisc.edu/~khan/software/gnu-win32/,,GNU Win32}
847 related projects by Mumit Khan.
851 @uref{ftp://ftp.thewrittenword.com/packages/free/by-name/gcc-2.95.2/,,The
852 Written Word} offers binaries for Solaris 2.5.1, 2.6, 2.7/SPARC, 2.7/Intel,
853 IRIX 6.2, 6.5, Digital UNIX 4.0D, HP-UX 10.20, and HP-UX 11.00.
857 @uref{http://h8300-hms.sourceforge.net/,,GNU Development Tools for the
858 Hitachi H8/300[HS] Series}
862 In addition to those specific offerings, you can get a binary
863 distribution CD-ROM from the
864 @uref{http://www.fsf.org/order/order.html,,Free Software Foundation}.
865 It contains binaries for a number of platforms, and
866 includes not only GCC, but other stuff as well. The current CD does
867 not contain the latest version of GCC, but it should allow
868 bootstrapping the compiler. An updated version of that disk is in the
876 @uref{./index.html,,Return to the GCC Installation page}
880 @c ***Specific****************************************************************
882 @comment node-name, next, previous, up
883 @node Specific, Concept Index, Binaries, Top
887 <h1 align="center">Host/target specific installation notes for GCC</h1>
890 @chapter Host/target specific installation notes for GCC
893 @cindex Specific installation notes
894 @cindex Target specific installation
895 @cindex Host specific installation
896 @cindex Target specific installation notes
898 Please read this document carefully @emph{before} installing the
899 GNU Compiler Collection on your machine.
903 @uref{#alpha*-dec-linux*,,alpha*-dec-linux*}
905 @uref{#alpha*-dec-osf*,,alpha*-dec-osf*}
907 @uref{#arm*-*-linux-gnu,,arm*-*-linux-gnu}
913 @uref{#h8300-hms,,h8300-hms}
915 @uref{#hppa*-hp-hpux*,,hppa*-hp-hpux*}
917 @uref{#hppa*-hp-hpux9,,hppa*-hp-hpux9}
919 @uref{#hppa*-hp-hpux10,,hppa*-hp-hpux10}
921 @uref{#hppa*-hp-hpux11,,hppa*-hp-hpux11}
923 @uref{#*-*-linux-gnu,,*-*-linux-gnu}
925 @uref{#ix86-*-linux*,,i?86-*-linux*}
927 @uref{#ix86-*-sco3.2v5*,,i?86-*-sco3.2v5*}
929 @uref{#ix86-*-solaris*,,i?86-*-solaris*}
931 @uref{#ix86-*-udk,,i?86-*-udk}
933 @uref{#*-ibm-aix*,,*-ibm-aix*}
935 @uref{#m68k-*-nextstep*,,m68k-*-nextstep*}
937 @uref{#m68k-sun-sunos4.1.1,,m68k-sun-sunos4.1.1}
939 @uref{#mips*-sgi-irix[45],,mips*-sgi-irix[45]}
941 @uref{#mips*-sgi-irix6,,mips*-sgi-irix6}
943 @uref{#powerpc-*-linux-gnu*,,powerpc-*-linux-gnu*}
945 @uref{#*-*-solaris*,,*-*-solaris*}
947 @uref{#sparc-sun-solaris*,,sparc-sun-solaris*}
949 @uref{#sparc-sun-solaris2.7,,sparc-sun-solaris2.7}
951 @uref{#*-sun-solaris2.8,,*-sun-solaris2.8}
953 @uref{#sunv5,,Sun V5.0 Compiler Bugs}
955 @uref{#sparc-sun-sunos*,,sparc-sun-sunos*}
957 @uref{#sparc-unknown-linux-gnulibc1,,sparc-unknown-linux-gnulibc1}
959 @uref{#sparc64-*-*,,sparc64-*-*}
961 @uref{#windows,,Microsoft Windows}
965 @uref{#older,,Older systems}
970 @uref{#elf_targets,,all ELF targets} (SVR4, Solaris, etc.)
975 <!-- -------- host/target specific issues start here ---------------- -->
977 <h3><a name="alpha*-dec-linux*">alpha*-dec-linux*</a></h3>
980 We require binutils 2.11 or newer. Previous binutils releases
981 had a number of problems with DWARF2 debugging information, not
982 the least of which is incorrect linking of shared libraries.
987 <h3><a name="alpha*-dec-osf*">alpha*-dec-osf*</a></h3>
990 If you install a shared libstdc++ and, when you link a non-trivial C++
991 program (for example, @code{gcc/testsuite/g++.other/delete3.C}),
992 the linker reports a couple of errors about multiply-defined symbols
993 (for example, @code{nothrow}, @code{__throw} and
994 @code{terminate(void)}), you've probably got a linker bug, for
995 which there's no known fix. The officially recommended work-around is
996 to remove the shared libstdc++.
998 An alternative solution is to arrange that all symbols from
999 @code{libgcc} get copied to the shared @code{libstdc++};
1000 see detailed solution below. (Surprising as it may seem, this does
1001 indeed fix the problem!) @emph{Beware} that this may bring you
1002 binary-compatibility problems in the future, if you don't use the same
1003 work-around next time you build @code{libstdc++}: if programs
1004 start to depend on @code{libstdc++} to provide symbols that used
1005 to be only in @code{libgcc}, you must arrange that
1006 @code{libstdc++} keeps providing them, otherwise the programs
1007 will have to be relinked.
1009 The magic spell is to add @code{-Wl,-all,-lgcc,-none} to the
1010 definition of macro @code{SHDEPS} in
1011 @code{libstdc++/config/dec-osf.ml} @emph{before}
1012 @code{alpha*-dec-osf*/libstdc++/Makefile} is created (a
1013 @uref{dec-osf-shlibstdc++.patch,,patch}
1014 that does just that is available). If the Makefile already exists, run
1015 @code{./config.status} within directory
1016 @code{alpha*-dec-osf*/libstdc++} (and
1017 @code{alpha*-dec-osf*/ieee/libstdc++}, if it also exists).
1018 Remove any existing @code{libstdc++.so*} from such directories,
1019 and run @code{make all-target-libstdc++} in the top-level
1020 directory, then @code{make install-target-libstdc++}.
1022 If you have already removed the build tree, you may just remove
1023 @code{libstdc++.so.2.10.0} from the install tree and re-create
1025 @code{gcc -shared -o libstdc++.so.2.10.0 -Wl,-all,-lstdc++,-lgcc,-none -lm}.
1027 sub-directory exists, repeat this command in it, with the additional
1033 <h3><a name="arm*-*-linux-gnu">arm*-*-linux-gnu</a></h3>
1036 We require GNU binutils 2.10 or newer.
1041 <h3><a name="avr">avr</a></h3>
1044 Use `@command{configure} @option{--target=avr}
1045 @option{--enable-languages="c"}' to configure GCC.
1047 Further installation notes and other useful information about AVR tools
1048 can also be obtained from:
1052 @uref{http://home.overta.ru/users/denisc,,http://home.overta.ru/users/denisc}
1054 @uref{http://www.itnet.pl/amelektr/avr,,http://www.itnet.pl/amelektr/avr}
1057 We @emph{strongly} recommend using binutils 2.11 or newer.
1059 The following error:
1061 Error: register required
1064 indicates that you should upgrade to a newer version of the binutils.
1069 <h3><a name="dos">DOS</a></h3>
1072 Please have a look at our @uref{binaries.html,,binaries page}.
1077 <h3><a name="h8300-hms">h8300-hms</a></h3>
1080 Please have a look at our @uref{binaries.html,,binaries page}.
1085 <h3><a name="hppa*-hp-hpux*">hppa*-hp-hpux*</a></h3>
1088 We @emph{highly} recommend using gas/binutils-2.8 or newer on all hppa
1089 platforms; you may encounter a variety of problems when using the HP
1092 Specifically, @option{-g} does not work on HP-UX (since that system
1093 uses a peculiar debugging format which GCC does not know about), unless you
1094 use GAS and GDB and configure GCC with the @uref{./configure.html#with-gnu-as,,@option{--with-gnu-as}}
1095 and @option{--with-as=...} options.
1097 If you wish to use pa-risc 2.0 architecture support, you must use either
1098 the HP assembler, gas/binutils-2.11 or a recent
1099 @uref{ftp://sources.redhat.com/pub/binutils/snapshots,,snapshot of gas}.
1101 More specific information to hppa*-hp-hpux* targets follows.
1106 <h3><a name="hppa*-hp-hpux9">hppa*-hp-hpux9</a></h3>
1109 The HP assembler has major problems on this platform. We've tried to work
1110 around the worst of the problems. However, those workarounds may be causing
1111 linker crashes in some circumstances; the workarounds also probably prevent
1112 shared libraries from working. Use the GNU assembler to avoid these problems.
1115 The configuration scripts for GCC will also trigger a bug in the hpux9
1116 shell. To avoid this problem set CONFIG_SHELL to @file{/bin/ksh} and SHELL
1117 to @file{/bin/ksh} in your environment.
1123 <h3><a name="hppa*-hp-hpux10">hppa*-hp-hpux10</a></h3>
1126 For hpux10.20, we @emph{highly} recommend you pick up the latest sed patch
1127 @code{PHCO_19798} from HP. HP has two sites which provide patches free of
1133 <a href="http://us-support.external.hp.com">US, Canada, Asia-Pacific, and
1137 @uref{http://us-support.external.hp.com,,}US, Canada, Asia-Pacific, and
1141 @uref{http://europe-support.external.hp.com,,Europe}
1144 The HP assembler on these systems is much better than the hpux9 assembler,
1145 but still has some problems. Most notably the assembler inserts timestamps
1146 into each object file it creates, causing the 3-stage comparison test to fail
1147 during a `@code{make bootstrap}'. You should be able to continue by
1148 saying `@code{make all}' after getting the failure from `@code{make
1155 <h3><a name="hppa*-hp-hpux11">hppa*-hp-hpux11</a></h3>
1158 GCC 2.95.2 does not support HP-UX 11, and it cannot generate 64-bit
1159 object files. Current (as of late 2000) snapshots and GCC 3.0 do support
1166 <h3><a name="*-*-linux-gnu">*-*-linux-gnu</a></h3>
1169 If you use glibc 2.2 (or 2.1.9x), GCC 2.95.2 won't install
1170 out-of-the-box. You'll get compile errors while building libstdc++.
1171 The patch @uref{glibc-2.2.patch,,glibc-2.2.patch}, that is to be
1172 applied in the GCC source tree, fixes the compatibility problems.
1177 <h3><a name="ix86-*-linux*">i?86-*-linux*</a></h3>
1180 You will need binutils-2.9.1.0.15 or newer for exception handling to work.
1182 If you receive Signal 11 errors when building on GNU/Linux, then it is
1183 possible you have a hardware problem. Further information on this can be
1184 found on @uref{http://www.bitwizard.nl/sig11/,,www.bitwizard.nl}.
1189 <h3><a name="ix86-*-sco3.2v5*">i?86-*-sco3.2v5*</a></h3>
1192 Unlike earlier versions of GCC, the ability to generate COFF with this
1193 target is no longer provided.
1195 Earlier versions of GCC emitted Dwarf-1 when generating ELF to allow
1196 the system debugger to be used. That support was too burdensome to
1197 maintain. GCC now emits only dwarf-2 for this target. This means you
1198 may use either the UDK debugger or GDB to debug programs built by this
1201 If you are building languages other than C, you must follow the instructions
1202 about invoking `@code{make bootstrap}' because the native OpenServer
1203 compiler will build a @code{cc1plus} that will not correctly parse many
1204 valid C++ programs including those in @code{libgcc.a}.
1205 @strong{You must do a `@code{make bootstrap}' if you are building with the
1208 Use of the `@option{-march-pentiumpro}' flag can result in
1209 unrecognized opcodes when using the native assembler on OS versions before
1210 5.0.6. (Support for P6 opcodes was added to the native ELF assembler in
1211 that version.) While it's rather rare to see these emitted by GCC yet,
1212 errors of the basic form:
1215 /usr/tmp/ccaNlqBc.s:22:unknown instruction: fcomip
1216 /usr/tmp/ccaNlqBc.s:50:unknown instruction: fucomip
1219 are symptoms of this problem. You may work around this by not
1220 building affected files with that flag, by using the GNU assembler, or
1221 by using the assembler provided with the current version of the OS.
1222 Users of GNU assembler should see the note below for hazards on doing
1225 The native SCO assembler that is provided with the OS at no
1226 charge is normally required. If, however, you must be able to use
1227 the GNU assembler (perhaps you're compiling code with asms that
1228 require GAS syntax) you may configure this package using the flags
1229 @uref{./configure.html#with-gnu-as,,@option{--with-gnu-as}}. You must use a recent version of GNU
1230 binutils; versions past 2.9.1 seem to work well.
1232 In general, the @option{--with-gnu-as} option isn't as well tested
1233 as the native assembler.
1235 Look in @file{gcc/config/i386/sco5.h} (search for "messy") for
1236 additional OpenServer-specific flags.
1238 Systems based on OpenServer before 5.0.4 (`@code{uname -X}'
1239 will tell you what you're running) require TLS597 from ftp.sco.com/TLS
1240 for C++ constructors and destructors to work right.
1242 The system linker in (at least) 5.0.4 and 5.0.5 will sometimes
1243 do the wrong thing for a construct that GCC will emit for PIC
1244 code. This can be seen as execution testsuite failures when using
1245 -fPIC on 921215-1.c, 931002-1.c, nestfunc-1.c, and gcov-1.c.
1246 For 5.0.5, an updated linker that will cure this problem is
1247 available. You must install both
1248 @uref{ftp://ftp.sco.com/Supplements/rs505a/,,ftp://ftp.sco.com/Supplements/rs505a/}
1249 and @uref{ftp://ftp.sco.com/SLS/,,OSS499A}.
1251 The dynamic linker in OpenServer 5.0.5 (earlier versions may show
1252 the same problem) aborts on certain g77-compiled programs. It's particularly
1253 likely to be triggered by building Fortran code with the @option{-fPIC} flag.
1254 Although it's conceivable that the error could be triggered by other
1255 code, only G77-compiled code has been observed to cause this abort.
1256 If you are getting core dumps immediately upon execution of your
1257 g77 program - and especially if it's compiled with -fPIC - try applying
1258 @uref{sco_osr5_g77.patch,,@code{`sco_osr5_g77.patch'}} to your libf2c and
1260 Affected faults, when analyzed in a debugger, will show a stack
1261 backtrace with a fault occurring in @code{rtld()} and the program
1262 running as @code{/usr/lib/ld.so.1}. This problem has been reported to SCO
1263 engineering and will hopefully be addressed in later releases.
1269 <h3><a name="ix86-*-solaris*">i?86-*-solaris*</a></h3>
1272 GCC 2.95.2, when configured to use the GNU assembler, would invoke
1273 it with the @code{-s} switch, that GNU as up to 2.9.5.0.12 does
1274 not support. If you'd rather not use a newer GNU as nor the native
1275 assembler, you'll need the patch
1276 @uref{x86-sol2-gas.patch,,@code{`x86-sol2-gas.patch'}}.
1282 <h3><a name="ix86-*-udk">i?86-*-udk</a></h3>
1285 This target emulates the SCO Universal Development Kit and requires that
1286 package be installed. (If it is installed, you will have a
1287 @file{/udk/usr/ccs/bin/cc } file present.) It's very much like the
1288 @code{i?86-*-unixware7*} target
1289 but is meant to be used when hosting on a system where UDK isn't the
1290 default compiler such as OpenServer 5 or Unixware 2. This target will
1291 generate binaries that will run on OpenServer, Unixware 2, or Unixware 7,
1292 with the same warnings and caveats as the SCO UDK.
1294 You can stage1 with either your native compiler or with UDK. If you
1295 don't do a full bootstrap when initially building with your native compiler
1296 you will have an utterly unusable pile of bits as your reward.
1298 This target is a little tricky to build because we have to distinguish
1299 it from the native tools (so it gets headers, startups, and libraries
1300 from the right place) while making the tools not think we're actually
1301 building a cross compiler. The easiest way to do this is with a configure
1304 @command{ CC=/udk/usr/ccs/bin/cc <i>/your/path/to/</i>gcc/configure
1305 --host=i686-pc-udk --target=i686-pc-udk --program-prefix=udk-}
1307 @emph{You should substitute 'i686' in the above command with the appropriate
1308 processor for your host.}
1310 You should follow this with a `@command{make bootstrap}' then
1311 `@command{make install}'. You can then access the UDK-targeted GCC
1312 tools by adding @code{udk-} before the commonly known name. For example, to
1313 invoke the C compiler, you would use `@code{udk-gcc}'. They will coexist
1314 peacefully with any native-target GCC tools you may have installed.
1320 <h3><a name="*-ibm-aix*">*-ibm-aix*</a></h3>
1321 <!-- rs6000-ibm-aix*, powerpc-ibm-aix* -->
1324 AIX Make frequently has problems with GCC makefiles. GNU Make 3.76 or
1325 newer is recommended to build on this platform.
1327 Errors involving "alloca" when building GCC generally are due
1328 to an incorrect definition of @command{CC} in the Makefile or mixing files
1329 compiled with the native C compiler and GCC. During the stage1 phase of
1330 the build, the native AIX compiler @strong{must} be invoked as "cc"
1331 (not "xlc"). Once @command{configure} has been informed of
1332 "xlc", one needs to use "make distclean" to remove the
1333 configure cache files and ensure that @command{CC} environment variable
1334 does not provide a definition that will confuse @command{configure}.
1335 If this error occurs during stage2 or later, then the problem most likely
1336 is the version of Make (see above).
1338 Binutils 2.10 does not support AIX 4.3. Binutils available from the
1339 @uref{http://www-1.ibm.com/servers/aix/products/aixos/linux/,,AIX Toolbox for Linux: GNU and Open Source tools for AIX};
1340 website does work. Binutils 2.11 is expected to include AIX 4.3
1341 support. The GNU Assembler is necessary for libstdc++ to build. The
1342 AIX native ld still is recommended. The native AIX tools do
1343 interoperate with GCC.
1345 Linking executables and shared libraries may produce warnings of
1346 duplicate symbols. The assembly files generated by GCC for AIX always
1347 have included multiple symbol definitions for certain global variable
1348 and function declarations in the original program. The warnings should
1349 not prevent the linker from producing a correct library or runnable
1352 AIX 4.3 utilizes a "large format" archive to support both 32-bit and
1353 64-bit object modules. The routines provided in AIX 4.3.0 and AIX 4.3.1
1354 to parse archive libraries did not handle the new format correctly.
1355 These routines are used by GCC and result in error messages during
1356 linking such as "not a COFF file". The version of the routines shipped
1357 with AIX 4.3.1 should work for a 32-bit environment. The @option{-g}
1358 option of the archive command may be used to create archives of 32-bit
1359 objects using the original "small format". A correct version of the
1360 routines is shipped with AIX 4.3.2.
1362 Some versions of the AIX binder (linker) can fail with a relocation
1363 overflow severe error when the @option{-bbigtoc} option is used to link
1364 GCC-produced object files into an executable that overflows the TOC. A fix
1365 for APAR IX75823 (OVERFLOW DURING LINK WHEN USING GCC AND -BBIGTOC) is
1366 available from IBM Customer Support and from its
1367 @uref{http://service.boulder.ibm.com/,,service.boulder.ibm.com}
1368 website as PTF U455193.
1370 The AIX 4.3.2.1 linker (bos.rte.bind_cmds Level 4.3.2.1) will dump core
1371 with a segmentation fault when invoked by any version of GCC. A fix for
1372 APAR IX87327 is available from IBM Customer Support and from its
1373 @uref{http://service.boulder.ibm.com/,,service.boulder.ibm.com}
1374 website as PTF U461879. This fix is incorporated in AIX 4.3.3 and above.
1376 The initial assembler shipped with AIX 4.3.0 generates incorrect object
1377 files. A fix for APAR IX74254 (64BIT DISASSEMBLED OUTPUT FROM COMPILER FAILS
1378 TO ASSEMBLE/BIND) is available from IBM Customer Support and from its
1379 @uref{http://service.boulder.ibm.com/,,service.boulder.ibm.com}
1380 website as PTF U453956. This fix is incorporated in AIX 4.3.1 and above.
1382 AIX provides National Language Support (NLS). Compilers and assemblers
1383 use NLS to support locale-specific representations of various data
1384 formats including floating-point numbers (e.g., "." vs "," for
1385 separating decimal fractions). There have been problems reported where
1386 GCC does not produce the same floating-point formats that the assembler
1387 expects. If one encouters this problem, set the @command{LANG}
1388 environment variable to "C" or "En_US".
1394 <h3><a name="m68k-*-nextstep*">m68k-*-nextstep*</a></h3>
1397 You absolutely @strong{must} use GNU sed and GNU make on this platform.
1400 On NEXTSTEP 3.x where x < 3 the build of GCC will abort during
1401 stage1 with an error message like this:
1405 /usr/tmp/ccbbsZ0U.s:987:Unknown pseudo-op: .section
1406 /usr/tmp/ccbbsZ0U.s:987:Rest of line ignored. 1st junk character
1410 The reason for this is the fact that NeXT's assembler for these
1411 versions of the operating system does not support the .section
1412 pseudo op that's needed for full C++ exception functionality.
1414 As NeXT's assembler is a derived work from GNU as, a free
1415 replacement that does can be obtained at
1416 @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}.
1418 If you try to build the integrated C++ & C++ runtime libraries on this system
1419 you will run into trouble with include files. The way to get around this is
1420 to use the following sequence. Note you must have write permission to
1421 the directory @emph{prefix} you specified in the configuration process of GCC
1422 for this sequence to work.
1426 make all-texinfo all-bison all-byacc all-binutils all-gas all-ld
1429 make install-headers-tar
1438 <h3><a name="m68k-sun-sunos4.1.1">m68k-sun-sunos4.1.1</a></h3>
1441 It is reported that you may need the GNU assembler on this platform.
1447 <h3><a name="mips*-sgi-irix[45]">mips*-sgi-irix[45]</a></h3>
1450 You must use GAS on these platforms, as the native assembler can not handle
1451 the code for exception handling support. Either of these messages indicates
1452 that you are using the MIPS assembler when instead you should be using GAS:
1454 @samp{ as0: Error: ./libgcc2.c, line 1:Badly delimited numeric literal
1455 .4byte $LECIE1-$LSCIE1
1456 as0: Error: ./libgcc2.c, line 1:malformed statement}
1460 @samp{ as0: Error: /src/bld-gcc/gcc/libgcc2.c, line 1:undefined symbol in expression
1461 .word $LECIE1-$LSCIE1}
1463 These systems don't have ranlib, which various components in GCC need; you
1464 should be able to avoid this problem by installing GNU binutils, which includes
1465 a functional ranlib for this system.
1467 You may get the following warning on irix4 platforms, it can be safely
1470 warning: foo.o does not have gp tables for all its sections.
1473 When building GCC, the build process loops rebuilding cc1 over and
1474 over again. This happens on mips-sgi-irix5.2, and possibly other platforms.@*
1475 It has been reported that this is a known bug in the make shipped with
1476 IRIX 5.2. We recommend you use GNU make instead of the vendor supplied
1477 make program; however, you may have success with "smake" on IRIX 5.2 if
1478 you do not have GNU make available.
1480 See @uref{http://freeware.sgi.com/,,http://freeware.sgi.com/} for more
1481 information about using GCC on IRIX platforms.
1487 <h3><a name="mips*-sgi-irix6">mips*-sgi-irix6</a></h3>
1490 You must @emph{not} use GAS on irix6 platforms; doing so will only
1493 These systems don't have ranlib, which various components in GCC need; you
1494 should be able to avoid this problem by making a dummy script called ranlib
1495 which just exits with zero status and placing it in your path.
1497 If you are using Irix cc as your bootstrap compiler, you must
1498 ensure that the N32 ABI is in use. To test this, compile a simple C
1499 file with @command{cc} and then run @command{file} on the
1500 resulting object file. The output should look like:
1503 @code{ test.o: ELF N32 MSB ...}
1508 @code{ test.o: ELF 32-bit MSB}
1511 then your version of @command{cc} uses the O32 ABI default. You
1512 should set the environment variable @command{CC} to 'cc -n32'
1513 before configuring GCC.
1515 GCC does not currently support generating O32 ABI binaries in the
1516 mips-sgi-irix6 configurations. It used to be possible to create a GCC
1517 with O32 ABI only support by configuring it for the mips-sgi-irix5
1518 target. See the link below for details.
1520 GCC does not correctly pass/return structures which are
1521 smaller than 16 bytes and which are not 8 bytes. The problem is very
1522 involved and difficult to fix. It affects a number of other targets also,
1523 but IRIX 6 is affected the most, because it is a 64 bit target, and 4 byte
1524 structures are common. The exact problem is that structures are being padded
1525 at the wrong end, e.g. a 4 byte structure is loaded into the lower 4 bytes
1526 of the register when it should be loaded into the upper 4 bytes of the
1529 GCC is consistent with itself, but not consistent with the SGI C compiler
1530 (and the SGI supplied runtime libraries), so the only failures that can
1531 happen are when there are library functions that take/return such
1532 structures. There are very few such library functions. I can only recall
1533 seeing two of them: inet_ntoa, and semctl.
1535 See @uref{http://freeware.sgi.com/,,http://freeware.sgi.com/} for more
1536 information about using GCC on IRIX platforms.
1542 <h3><a name="powerpc-*-linux-gnu*">powerpc-*-linux-gnu*</a></h3>
1546 @uref{ftp://ftp.varesearch.com/pub/support/hjl/binutils,,binutils-2.9.4.0.8}
1547 or newer for a working GCC. It is strongly recommended to recompile binutils
1548 if you initially built it with gcc-2.7.2.x.
1554 <h3><a name="*-*-solaris*">*-*-solaris*</a></h3>
1557 Starting with Solaris, Sun does not ship a C compiler any more. To
1558 bootstrap and install GCC you first have to install a pre-built
1559 compiler, see our @uref{binaries.html,,binaries page} for
1562 You must use GNU Make to build GCC on Solaris 2. If you don't have GNU
1563 Make installed, you can use the prebuilt compiler mentioned above to
1566 Sun as 4.X is broken in that it cannot cope with long symbol names.
1567 A typical error message might look similar to the following:
1569 @samp{/usr/ccs/bin/as: "/var/tmp/ccMsw135.s", line 11041:
1570 error: can't compute value of an expression involving an external symbol.}
1572 This is Sun bug 4237974. This is fixed with patch 108908-02 and has
1573 been fixed in later (5.x) versions of the assembler.
1577 <h3><a name="sparc-sun-solaris*">sparc-sun-solaris*</a></h3>
1580 binutils 2.9.1 has known bugs on this platform. We recommend to use
1581 binutils 2.10 or the vendor tools (Sun as, Sun ld).
1583 Unfortunately, C++ shared libraries, including libstdc++, won't work
1584 properly if assembled with Sun as: the linker will complain about
1585 relocations in read-only sections, in the definition of virtual
1586 tables. Also, Sun as fails to process long symbols resulting from
1587 mangling template-heavy C++ function names.
1593 <h3><a name="sparc-sun-solaris2.7">sparc-sun-solaris2.7</a></h3>
1596 Sun patch 107058-01 (1999-01-13) for SPARC Solaris 7 triggers a bug in
1597 the dynamic linker. This problem (Sun bug 4210064) affects GCC 2.8
1598 and later, including all EGCS releases. Sun formerly recommended
1599 107058-01 for all Solaris 7 users, but around 1999-09-01 it started to
1600 recommend it only for people who use Sun's compilers.
1602 Here are some workarounds to this problem:
1605 Do not install Sun patch 107058-01 until after Sun releases a
1606 complete patch for bug 4210064. This is the simplest course to take,
1607 unless you must also use Sun's C compiler. Unfortunately 107058-01
1608 is preinstalled on some new Solaris-based hosts, so you may have to
1612 Copy the original, unpatched Solaris 7
1613 @command{/usr/ccs/bin/as} into
1614 @command{/usr/local/lib/gcc-lib/sparc-sun-solaris2.7/2.95.1/as},
1615 adjusting the latter name to fit your local conventions and software
1619 Install Sun patch 106950-03 (1999-05-25) or later. Nobody with
1620 both 107058-01 and 106950-03 installed has reported the bug with GCC
1621 and Sun's dynamic linker. This last course of action is riskiest,
1622 for two reasons. First, you must install 106950 on all hosts that
1623 run code generated by GCC; it doesn't suffice to install it only on
1624 the hosts that run GCC itself. Second, Sun says that 106950-03 is
1625 only a partial fix for bug 4210064, but Sun doesn't know whether the
1626 partial fix is adequate for GCC. Revision -08 or later should fix
1627 the bug, but (as of 1999-10-06) it is still being tested.
1634 <h3><a name="*-sun-solaris2.8">*-sun-solaris2.8</a></h3>
1635 <!-- ripped from the same FAQ that I answered -->
1638 Sun bug 4296832 turns up when compiling X11 headers with GCC 2.95 or
1639 newer: g++ will complain that types are missing. These headers assume
1640 that omitting the type means 'int'; this assumption worked for C89 but
1641 is wrong for C++, and is now wrong for C99 also.
1643 g++ accepts such (illegal) constructs with the option @option{-fpermissive}; it
1644 will assume that any missing type is 'int' (as defined by C89).
1646 For Solaris 8, this is fixed by revision 24 or later of patch 108652
1647 (for SPARCs) or 108653 (for Intels).
1653 <h3><a name="sunv5">Sun V5.0 Compiler Bugs</a></h3>
1656 The Sun V5.0 compilers are known to mis-compile GCC 2.95 and GCC 2.95.1,
1657 which in turn causes GCC to fail its bootstrap comparison test.
1658 GCC 2.95.2 has a workaround.
1664 <h3><a name="sparc-sun-sunos*">sparc-sun-sunos*</a></h3>
1667 A bug in the SunOS4 linker will cause it to crash when linking
1668 -fPIC compiled objects (and will therefore not allow you to build
1671 To fix this problem you can either use the most recent version of
1672 binutils or get the latest SunOS4 linker patch (patch ID 100170-10)
1673 from Sun's patch site.
1679 <h3><a name="sparc-unknown-linux-gnulibc1">sparc-unknown-linux-gnulibc1</a></h3>
1682 It has been reported that you might need
1683 @uref{ftp://ftp.yggdrasil.com/private/hjl,,binutils-2.8.1.0.23}
1684 for this platform, too.
1690 <h3><a name="sparc64-*-*">sparc64-*-*</a></h3>
1693 GCC version 2.95 is not able to compile code correctly for
1694 @code{sparc64} targets. Users of the Linux kernel, at least,
1695 12~can use the @code{sparc32} program to start up a new shell
1696 invocation with an environment that causes @command{configure} to
1697 recognize (via @command{uname -a}) the system as @command{sparc-*-*} instead.
1703 <h3><a name="windows"></a>Microsoft Windows (32 bit)</h3>
1706 A port of GCC 2.95.x is included with the
1707 @uref{http://www.cygwin.com/,,Cygwin environment}.
1709 Current (as of early 2001) snapshots of GCC will build under Cygwin
1710 without modification.
1715 <h3><a name="os2"></a>OS/2</h3>
1718 GCC does not currently support OS/2. However, Andrew Zabolotny has been
1719 working on a generic OS/2 port with pgcc. The current code code can be found
1720 at @uref{http://www.goof.com/pcg/os2/,,http://www.goof.com/pcg/os2/}.
1722 An older copy of GCC 2.8.1 is included with the EMX tools available at
1723 @uref{ftp://ftp.leo.org/pub/comp/os/os2/leo/devtools/emx+gcc/,,
1724 ftp://ftp.leo.org/pub/comp/os/os2/leo/devtools/emx+gcc/}.
1729 <h3><a name="older"></a>Older systems</h3>
1732 GCC contains support files for many older (1980s and early
1733 1990s) Unix variants. For the most part, support for these systems
1734 has not been deliberately removed, but it has not been maintained for
1735 several years and may suffer from bitrot. Support from some systems
1736 has been removed from GCC 3: fx80, ns32-ns-genix, pyramid, tahoe,
1737 gmicro, spur; most of these targets had not been updated since GCC
1740 Support for older systems as targets for cross-compilation is less
1741 problematic than support for them as hosts for GCC; if an enthusiast
1742 wishes to make such a target work again (including resurrecting any
1743 of the targets that never worked with GCC 2, starting from the last
1744 CVS version before they were removed), patches
1745 @uref{../contribute.html,,following the usual requirements}
1746 would be likely to be accepted, since they should not affect the
1747 support for more modern targets.
1749 Support for old systems as hosts for GCC can cause problems if the
1750 workarounds for compiler, library and operating system bugs affect the
1751 cleanliness or maintainability of the rest of GCC. In some cases, to
1752 bring GCC up on such a system, if still possible with current GCC, may
1753 require first installing an old version of GCC which did work on that
1754 system, and using it to compile a more recent GCC, to avoid bugs in
1755 the vendor compiler. Old releases of GCC 1 and GCC 2 are available in
1756 the old-releases directory on the
1757 @uref{../mirrors.html,,GCC mirror sites}. Header bugs may generally
1758 be avoided using @code{fixincludes}, but bugs or deficiencies in libraries and
1759 the operating system may still cause problems.
1761 For some systems, old versions of GNU binutils may also be useful,
1762 and are available from pub/binutils/old-releases on
1763 @uref{http://sources.redhat.com/mirrors.html,,sources.redhat.com mirror sites}.
1765 Some of the information on specific systems above relates to
1766 such older systems, but much of the information
1767 about GCC on such systems (which may no longer be applicable to
1768 current GCC) is to be found in the GCC texinfo manual.
1773 <h3><a name="elf_targets">all ELF targets (SVR4, Solaris, etc.)</a></h3>
1776 C++ support is significantly better on ELF targets if you use the @uref{./configure.html#with-gnu-ld,,GNU
1777 linker}; duplicate copies of inlines, vtables and template instantiations
1778 will be discarded automatically.
1787 @uref{./index.html,,Return to the GCC Installation page}
1791 @c ***************************************************************************
1792 @c Part 6 The End of the Document
1794 @comment node-name, next, previous, up
1795 @node Concept Index, , Specific, Top
1799 @unnumbered Concept Index