@end ifnothtml
@c Part 2 Summary Description and Copyright
-@macro copyrightnotice
+@copying
Copyright @copyright{} 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
-1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
@sp 1
Permission is granted to copy, distribute and/or modify this document
-under the terms of the GNU Free Documentation License, Version 1.1 or
+under the terms of the GNU Free Documentation License, Version 1.2 or
any later version published by the Free Software Foundation; with no
Invariant Sections, the Front-Cover texts being (a) (see below), and
with the Back-Cover Texts being (b) (see below). A copy of the
You have freedom to copy and modify this GNU Manual, like GNU
software. Copies published by the Free Software Foundation raise
funds for GNU development.
-@end macro
+@end copying
@ifinfo
-@copyrightnotice{}
+@insertcopying
@end ifinfo
@c Part 3 Titlepage and Copyright
@c The following two commands start the copyright page.
@page
@vskip 0pt plus 1filll
-@copyrightnotice{}
+@insertcopying
@end titlepage
@c Part 4 Top node and Master Menu
@end ifhtml
@html
-<hr>
+<hr />
<p>
@end html
@ifhtml
@uref{./index.html,,Return to the GCC Installation page}
-@copyrightnotice{}
+@insertcopying
@end ifhtml
@end ifset
@file{opcodes}, @dots{}) to the directory containing the GCC sources.
@html
-<hr>
+<hr />
<p>
@end html
@ifhtml
@command{pawd} or @command{amq -w}, during the configuration and build
phases.
-First, in general, GCC @strong{must} be built into a separate directory
-than the sources which does @strong{not} reside within the source tree.
-This is how almost all developers build GCC; building where @var{srcdir}
-== @var{objdir} is completely unsupported; building where @var{objdir}
-is a subdirectory of @var{srcdir} is completely unsupported.
+First, we @strong{highly} recommend that GCC be built into a
+separate directory than the sources which does @strong{not} reside
+within the source tree. This is how we generally build GCC; building
+where @var{srcdir} == @var{objdir} should still work, but doesn't
+get extensive testing; building where @var{objdir} is a subdirectory
+of @var{srcdir} is unsupported.
If you have previously built GCC in the same directory for a
different target machine, do @samp{make distclean} to delete all files
-that might be invalid. One of the files this deletes is
-@file{Makefile}; if @samp{make distclean} complains that @file{Makefile}
-does not exist, it probably means that the directory is already suitably
-clean. However, with the recommended method of building in a separate
-@var{objdir}, you should simply use a different @var{objdir} for each
-target.
+that might be invalid. One of the files this deletes is @file{Makefile};
+if @samp{make distclean} complains that @file{Makefile} does not exist
+or issues a message like ``don't know how to make distclean'' it probably
+means that the directory is already suitably clean. However, with the
+recommended method of building in a separate @var{objdir}, you should
+simply use a different @var{objdir} for each target.
Second, when configuring a native system, either @command{cc} or
@command{gcc} must be in your path or you must set @env{CC} in
@file{/usr/local}.
We @strong{highly} recommend against @var{dirname} being the same or a
-subdirectory of @var{objdir} or vice versa.
+subdirectory of @var{objdir} or vice versa. If specifying a directory
+beneath a user's home directory tree, some shells will not expand
+@var{dirname} correctly if it contains the @samp{~} metacharacter; use
+@env{$HOME} instead.
These additional options control where certain parts of the distribution
are installed. Normally you should not need to use these options.
@table @code
-
@item --exec-prefix=@var{dirname}
Specify the toplevel installation directory for architecture-dependent
files. The default is @file{@var{prefix}}.
Specify the installation directory for documentation in info format.
The default is @file{@var{prefix}/info}.
+@item --datadir=@var{dirname}
+Specify the installation directory for some architecture-independent
+data files referenced by GCC@. The default is @file{@var{prefix}/share}.
+
@item --mandir=@var{dirname}
Specify the installation directory for manual pages. The default is
@file{@var{prefix}/man}. (Note that the manual pages are only extracts from
@var{suffix}) are prepended (appended) before further transformations
can happen with a special transformation script @var{pattern}.
-As currently implemented, this options only take effect for native
+As currently implemented, this option only takes effect for native
builds; cross compiler binaries' names are not transformed even when a
-transformation is explicitly asked for by one of this options.
+transformation is explicitly asked for by one of these options.
For native builds, some of the installed programs are also installed
with the target alias in front of their name, as in
programs---perhaps many others. (GCC installs its own header files in
another directory which is based on the @option{--prefix} value.)
+Both the local-prefix include directory and the GCC-prefix include
+directory are part of GCC's "system include" directories. Although these
+two directories are not fixed, they need to be searched in the proper
+order for the correct processing of the include_next directive. The
+local-prefix include directory is searched before the GCC-prefix
+include directory. Another characteristic of system include directories
+is that pedantic warnings are turned off for headers in these directories.
+
+Some autoconf macros add @option{-I @var{directory}} options to the
+compiler command line, to ensure that directories containing installed
+packages' headers are searched. When @var{directory} is one of GCC's
+system include directories, GCC will ignore the option so that system
+directories continue to be processed in the correct order. This
+may result in a search order different from what was specified but the
+directory will still be searched.
+
+GCC automatically searches for ordinary libraries using
+@env{GCC_EXEC_PREFIX}. Thus, when the same installation prefix is
+used for both GCC and packages, GCC will automatically search for
+both headers and libraries. This provides a configuration that is
+easy to use. GCC behaves in a manner similar to that when it is
+installed as a system compiler in @file{/usr}.
+
+Sites that need to install multiple versions of GCC may not want to
+use the above simple configuration. It is possible to use the
+@option{--program-prefix}, @option{--program-suffix} and
+@option{--program-transform-name} options to install multiple versions
+into a single directory, but it may be simpler to use different prefixes
+and the @option{--with-local-prefix} option to specify the location of the
+site-specific files for each version. It will then be necessary for
+users to specify explicitly the location of local site libraries
+(e.g., with @env{LIBRARY_PATH}).
+
+The same value can be used for both @option{--with-local-prefix} and
+@option{--prefix} provided it is not @file{/usr}. This can be used
+to avoid the default search of @file{/usr/local/include}.
+
@strong{Do not} specify @file{/usr} as the @option{--with-local-prefix}!
The directory you use for @option{--with-local-prefix} @strong{must not}
contain any of the system's standard header files. If it did contain
them, certain programs would be miscompiled (including GNU Emacs, on
certain targets), because this would override and nullify the header
-file corrections made by the @code{fixincludes} script.
+file corrections made by the @command{fixincludes} script.
Indications are that people who use this option use it based on mistaken
ideas of what it is for. People use it as if it specified where to
@item @anchor{with-gnu-as}--with-gnu-as
Specify that the compiler should assume that the
assembler it finds is the GNU assembler. However, this does not modify
-the rules to find an assembler and will result in confusion if found
-assembler is not actually the GNU assembler. (Confusion will also
+the rules to find an assembler and will result in confusion if the
+assembler found is not actually the GNU assembler. (Confusion may also
result if the compiler finds the GNU assembler but has not been
configured with @option{--with-gnu-as}.) If you have more than one
assembler installed on your system, you may want to use this option in
connection with @option{--with-as=@var{pathname}}.
-The systems where it makes a difference whether you use the GNU assembler are
-@samp{hppa1.0-@var{any}-@var{any}}, @samp{hppa1.1-@var{any}-@var{any}},
-@samp{i386-@var{any}-sysv}, @samp{i386-@var{any}-isc},
-@samp{i860-@var{any}-bsd}, @samp{m68k-bull-sysv},
-@samp{m68k-hp-hpux}, @samp{m68k-sony-bsd},
-@samp{m68k-altos-sysv}, @samp{m68000-hp-hpux},
-@samp{m68000-att-sysv}, @samp{@var{any}-lynx-lynxos},
-and @samp{mips-@var{any}}.
-On any other system, @option{--with-gnu-as} has no effect.
+The following systems are the only ones where it makes a difference
+whether you use the GNU assembler. On any other system,
+@option{--with-gnu-as} has no effect.
+
+@itemize bullet
+@item @samp{hppa1.0-@var{any}-@var{any}}
+@item @samp{hppa1.1-@var{any}-@var{any}}
+@item @samp{i386-@var{any}-sysv}
+@item @samp{m68k-bull-sysv}
+@item @samp{m68k-hp-hpux}
+@item @samp{m68000-hp-hpux}
+@item @samp{m68000-att-sysv}
+@item @samp{@var{any}-lynx-lynxos}
+@item @samp{mips-@var{any}}
+@end itemize
On the systems listed above (except for the HP-PA, for ISC on the
386, and for @samp{mips-sgi-irix5.*}), if you use the GNU assembler,
Some targets provide finer-grained control over which multilibs are built
(e.g., @option{--disable-softfloat}):
@table @code
-
@item arc-*-elf*
biendian.
@item --with-cpu=@var{cpu}
Specify which cpu variant the
compiler should generate code for by default. This is currently
-only supported on the some ports, specifically arm, powerpc, and
+only supported on some ports, specifically arm, powerpc, and
SPARC@. If configure does not recognize the model name (e.g.@: arm700,
-603e, or ultrasparc) you provide, please check the configure script
-for a complete list of supported models.
+603e, or ultrasparc) you provide, please check the
+@file{gcc/config.gcc} script for a complete list of supported models.
@item --enable-altivec
Specify that the target supports AltiVec vector enhancements. This
Specify that the user visible @command{cpp} program should be installed
in @file{@var{prefix}/@var{dirname}/cpp}, in addition to @var{bindir}.
+@item --enable-initfini-array
+Force the use of sections @code{.init_array} and @code{.fini_array}
+(instead of @code{.init} and @code{.fini}) for constructors and
+destructors. Option @option{--disable-initfini-array} has the
+opposite effect. If neither option is specified, the configure script
+will try to guess whether the @code{.init_array} and
+@code{.fini_array} sections are supported and, if they are, use them.
+
@item --enable-maintainer-mode
The build rules that
regenerate the GCC master message catalog @file{gcc.pot} are normally
@item --nfp
Specify that the machine does not have a floating point unit. This
-option only applies to @samp{m68k-sun-sunos@var{n}} and
-@samp{m68k-isi-bsd}. On any other system, @option{--nfp} has no effect.
+option only applies to @samp{m68k-sun-sunos@var{n}}. On any other
+system, @option{--nfp} has no effect.
+
+@item --enable-werror
+@itemx --disable-werror
+@itemx --enable-werror=yes
+@itemx --enable-werror=no
+When you specify this option, it controls whether certain files in the
+compiler are built with @option{-Werror} in bootstrap stage2 and later.
+If you don't specify it, @option{-Werror} is turned on for the main
+development trunk. However it defaults to off for release branches and
+final releases. The specific files which get @option{-Werror} are
+controlled by the Makefiles.
@item --enable-checking
@itemx --enable-checking=@var{list}
Some options which only apply to building cross compilers:
@table @code
-@item --with-headers=@var{dir}
-Specifies a directory
-which has target include files.
-@emph{This options is required} when building a cross
-compiler, if @file{@var{prefix}/@var{target}/sys-include} doesn't pre-exist.
-These include files will be copied into the @file{gcc} install directory.
-Fixincludes will be run on these files to make them compatible with
-GCC.
-@item --with-libs=``@var{dir1} @var{dir2} @dots{} @var{dirN}''
+@item --with-sysroot
+@itemx --with-sysroot=@var{dir}
+Tells GCC to consider @var{dir} as the root of a tree that contains a
+(subset of) the root filesystem of the target operating system.
+Target system headers, libraries and run-time object files will be
+searched in there. The specified directory is not copied into the
+install tree, unlike the options @option{--with-headers} and
+@option{--with-libs} that this option obsoletes. The default value,
+in case @option{--with-sysroot} is not given an argument, is
+@option{$@{gcc_tooldir@}/sys-root}. If the specified directory is a
+subdirectory of @option{$@{exec_prefix@}}, then it will be found relative to
+the GCC binaries if the installation tree is moved.
+
+@item --with-headers
+@itemx --with-headers=@var{dir}
+Deprecated in favor of @option{--with-sysroot}.
+Specifies that target headers are available when building a cross compiler.
+The @var{dir} argument specifies a directory which has the target include
+files. These include files will be copied into the @file{gcc} install
+directory. @emph{This option with the @var{dir} argument is required} when
+building a cross compiler, if @file{@var{prefix}/@var{target}/sys-include}
+doesn't pre-exist. If @file{@var{prefix}/@var{target}/sys-include} does
+pre-exist, the @var{dir} argument may be omitted. @command{fixincludes}
+will be run on these files to make them compatible with GCC.
+@item --with-libs
+@itemx --with-libs=``@var{dir1} @var{dir2} @dots{} @var{dirN}''
+Deprecated in favor of @option{--with-sysroot}.
Specifies a list of directories which contain the target runtime
libraries. These libraries will be copied into the @file{gcc} install
-directory.
+directory. If the directory list is omitted, this option has no
+effect.
@item --with-newlib
Specifies that @samp{newlib} is
being used as the target C library. This causes @code{__eprintf} to be
corresponding @option{--without} option.
@html
-<hr>
+<hr />
<p>
@end html
@ifhtml
It is normal to have compiler warnings when compiling certain files.
Unless you are a GCC developer, you can generally ignore these warnings
-unless they cause compilation to fail.
+unless they cause compilation to fail. Developers should attempt to fix
+any warnings encountered, however they can temporarily continue past
+warnings-as-errors by specifying the configure flag
+@option{--disable-werror}.
On certain old systems, defining certain environment variables such as
@env{CC} can interfere with the functioning of @command{make}.
directory. Make sure you have done all the necessary preparations.
If you build GCC on a BSD system using a directory stored in an old System
-V file system, problems may occur in running @code{fixincludes} if the
+V file system, problems may occur in running @command{fixincludes} if the
System V file system doesn't support symbolic links. These problems
result in a failure to fix the declaration of @code{size_t} in
@file{sys/types.h}. If you find that @code{size_t} is a signed type and
not need Bison installed to build them.
When building from CVS or snapshots, or if you modify Texinfo
-documentation, you need version 4.1 or later of Texinfo installed if you
+documentation, you need version 4.2 or later of Texinfo installed if you
want Info documentation to be regenerated. Releases contain Info
documentation pre-built for the unmodified documentation in the release.
stage2 of the 3-stage bootstrap of the compiler are deleted as
soon as they are no longer needed.
-
If you want to save additional space during the bootstrap and in
the final installation as well, you can build the compiler binaries
-without debugging information with @samp{make CFLAGS='-O' LIBCFLAGS='-g
--O2' LIBCXXFLAGS='-g -O2 -fno-implicit-templates' bootstrap}. This will save
+without debugging information as in the following example. This will save
roughly 40% of disk space both for the bootstrap and the final installation.
(Libraries will still contain debugging information.)
+@example
+ make CFLAGS='-O' LIBCFLAGS='-g -O2' \
+ LIBCXXFLAGS='-g -O2 -fno-implicit-templates' bootstrap
+@end example
+
If you wish to use non-default GCC flags when compiling the stage2 and
stage3 compilers, set @code{BOOT_CFLAGS} on the command line when doing
@samp{make bootstrap}. Non-default optimization flags are less well
Additional build tools (such as @command{gnatmake}) or a working GNAT
run-time library installation are usually @emph{not} required. However,
-if you want to boostrap the compiler using a minimal version of GNAT,
+if you want to bootstrap the compiler using a minimal version of GNAT,
you have to issue the following commands before invoking @samp{make
-boostrap} (this assumes that you start with an unmodified and consistent
+bootstrap} (this assumes that you start with an unmodified and consistent
source distribution):
@example
build feature described in the previous section.
@html
-<hr>
+<hr />
<p>
@end html
@ifhtml
compare your results with results from a similar configuration that have
been submitted to the
@uref{http://gcc.gnu.org/ml/gcc-testresults/,,gcc-testresults mailing list}.
+Some of these archived results are linked from the build status lists
+at @uref{http://gcc.gnu.org/buildstat.html}, although not everyone who
+reports a successful build runs the testsuites and submits the results.
This step is optional and may require you to download additional software,
but it can give you confidence in your new GCC installation or point out
problems before you install and start using your new GCC.
separately.
Second, you must have the testing tools installed. This includes
-a @uref{http://www.gnu.org/software/dejagnu/,,current version of DejaGnu};
-dejagnu 1.3 is not sufficient.
-It also includes Tcl and Expect; the DejaGnu site has links to these.
-
-Now you may need specific preparations:
-
-@itemize @bullet
+@uref{http://www.gnu.org/software/dejagnu/,,DejaGnu} 1.4.2 (or later),
+Tcl, and Expect; the DejaGnu site has links to these.
-@item
-The following environment variables may need to be set appropriately, as in
-the following example (which assumes that DejaGnu has been installed
-under @file{/usr/local}):
+If the directories where @command{runtest} and @command{expect} were
+installed are not in the @env{PATH}, you may need to set the following
+environment variables appropriately, as in the following example (which
+assumes that DejaGnu has been installed under @file{/usr/local}):
@example
TCL_LIBRARY = /usr/local/share/tcl8.0
DEJAGNULIBS = /usr/local/share/dejagnu
@end example
-On systems such as Cygwin, these paths are required to be actual
+(On systems such as Cygwin, these paths are required to be actual
paths, not mounts or links; presumably this is due to some lack of
-portability in the DejaGnu code.
-
-If the directories where @command{runtest} and @command{expect} were
-installed are in the @env{PATH}, it should not be necessary to set these
-environment variables.
+portability in the DejaGnu code.)
-@end itemize
Finally, you can run the testsuite (which may take a long time):
@example
cd @var{objdir}; make -k check
@end example
-The testing process will try to test as many components in the GCC
-distribution as possible, including the C, C++, Objective-C and Fortran
-compilers as well as the C++ and Java runtime libraries.
-
-While running the testsuite, DejaGnu might emit messages resembling
+This will test various components of GCC, such as compiler
+front ends and runtime libraries. While running the testsuite, DejaGnu
+might emit some harmless messages resembling
@samp{WARNING: Couldn't find the global config file.} or
-@samp{WARNING: Couldn't find tool init file}.
-These messages are harmless and do not affect the validity of the tests.
+@samp{WARNING: Couldn't find tool init file} that can be ignored.
@section How can I run the test suite on selected tests?
-As a first possibility to cut down the number of tests that are run it is
-possible to use @samp{make check-gcc} or @samp{make check-g++}
-in the @file{gcc} subdirectory of the object directory. To further cut down the
-tests the following is possible:
+In order to run sets of tests selectively, there are targets
+@samp{make check-gcc} and @samp{make check-g++}
+in the @file{gcc} subdirectory of the object directory. You can also
+just run @samp{make check} in a subdirectory of the object directory.
+
+
+A more selective way to just run all @command{gcc} execute tests in the
+testsuite is to use
@example
make check-gcc RUNTESTFLAGS="execute.exp @var{other-options}"
@end example
-This will run all @command{gcc} execute tests in the testsuite.
+Likewise, in order to run only the @command{g++} ``old-deja'' tests in
+the testsuite with filenames matching @samp{9805*}, you would use
@example
make check-g++ RUNTESTFLAGS="old-deja.exp=9805* @var{other-options}"
@end example
-This will run the @command{g++} ``old-deja'' tests in the testsuite where the filename
-matches @samp{9805*}.
-
The @file{*.exp} files are located in the testsuite directories of the GCC
source, the most important ones being @file{compile.exp},
@file{execute.exp}, @file{dg.exp} and @file{old-deja.exp}.
output of @samp{make check} into a file and look at the
@samp{Running @dots{} .exp} lines.
+
+@section Additional testing for Java Class Libraries
+
+The @uref{http://sources.redhat.com/mauve/,,Mauve Project} provides
+a suite of tests for the Java Class Libraries. This suite can be run
+as part of libgcj testing by placing the Mauve tree within the libjava
+testsuite at @file{libjava/testsuite/libjava.mauve/mauve}, or by
+specifying the location of that tree when invoking @samp{make}, as in
+@samp{make MAUVEDIR=~/mauve check}.
+
+@uref{http://www-124.ibm.com/developerworks/oss/cvs/jikes/~checkout~/jacks/jacks.html,,Jacks}
+is a free test suite that tests Java compiler front ends. This suite
+can be run as part of libgcj testing by placing the Jacks tree within
+the libjava testsuite at @file{libjava/testsuite/libjava.jacks/jacks}.
+
@section How to interpret test results
-After the testsuite has run you'll find various @file{*.sum} and @file{*.log}
+The result of running the testsuite are various @file{*.sum} and @file{*.log}
files in the testsuite subdirectories. The @file{*.log} files contain a
detailed log of the compiler invocations and the corresponding
-results, the @file{*.sum} files summarize the results. These summaries list
-all the tests that have been run with a corresponding status code:
+results, the @file{*.sum} files summarize the results. These summaries
+contain status codes for all tests:
@itemize @bullet
@item
prepended to the testsuite summary and should contain any special
remarks you have on your results or your build environment. Please
do not edit the testsuite result block or the subject line, as these
-messages are automatically parsed and presented at the
-@uref{http://gcc.gnu.org/testresults/,,GCC testresults} web
-page. Here you can also gather information on how specific tests
-behave on different platforms and compare them with your results. A
-few failing testcases are possible even on released versions and you
-should look here first if you think your results are unreasonable.
+messages may be automatically processed.
@html
-<hr>
+<hr />
<p>
@end html
@ifhtml
parts of the compiler in @file{@var{libdir}/gcc-lib}; documentation in
info format in @file{@var{infodir}} (normally @file{@var{prefix}/info}).
+When installing cross-compilers, GCC's executables
+are not only installed into @file{@var{bindir}}, that
+is, @file{@var{exec-prefix}/bin}, but additionally into
+@file{@var{exec-prefix}/@var{target-alias}/bin}, if that directory
+exists. Typically, such @dfn{tooldirs} hold target-specific
+binutils, including assembler and linker.
+
+Installation into a temporary staging area or into a @command{chroot}
+jail can be achieved with the command
+
+@example
+make DESTDIR=@var{path-to-rootdir} install
+@end example
+
+@noindent where @var{path-to-rootdir} is the absolute path of
+a directory relative to which all installation paths will be
+interpreted. Note that the directory specified by @code{DESTDIR}
+need not exist yet; it will be created if necessary.
+
+There is a subtle point with tooldirs and @code{DESTDIR}:
+If you relocate a cross-compiler installation with
+e.g.@: @samp{DESTDIR=@var{rootdir}}, then the directory
+@file{@var{rootdir}/@var{exec-prefix}/@var{target-alias}/bin} will
+be filled with duplicated GCC executables only if it already exists,
+it will not be created otherwise. This is regarded as a feature,
+not as a bug, because it gives slightly more control to the packagers
+using the @code{DESTDIR} feature.
+
If you built a released version of GCC using @samp{make bootstrap} then please
quickly review the build status page for your release, available from
@uref{http://gcc.gnu.org/buildstat.html}.
@uref{../bugs.html,,bug reporting guidelines}.
If you want to print the GCC manuals, do @samp{cd @var{objdir}; make
-dvi}. You will need to have @command{texi2dvi} (version at least 4.1)
+dvi}. You will need to have @command{texi2dvi} (version at least 4.2)
and @TeX{} installed. This creates a number of @file{.dvi} files in
subdirectories of @file{@var{objdir}}; these may be converted for
printing with programs such as @command{dvips}. You can also
recent version of GCC@.
@html
-<hr>
+<hr />
<p>
@end html
@ifhtml
OpenServer/Unixware}.
@item
-Sinix/Reliant Unix---@uref{ftp://ftp.siemens.de/sni/mr/pd/gnu/gcc,,Siemens}.
+Sinix/Reliant Unix---@uref{ftp://ftp.fujitsu-siemens.com/pub/pd/gnu/gcc/,,Siemens}.
@item
Solaris 2 (SPARC, Intel)---@uref{http://www.sunfreeware.com/,,Sunfreeware}.
SGI---@uref{http://freeware.sgi.com/,,SGI Freeware}.
@item
-Windows 95, 98, and NT:
+Microsoft Windows:
@itemize
@item
The @uref{http://sources.redhat.com/cygwin/,,Cygwin} project;
works.
@html
-<hr>
+<hr />
<p>
@end html
@ifhtml
@item
@uref{#powerpcle-*-winnt,,powerpcle-*-winnt, powerpcle-*-pe}
@item
-@uref{#s390-*-linux*}
+@uref{#s390-*-linux*,,s390-*-linux*}
@item
-@uref{#s390x-*-linux*}
+@uref{#s390x-*-linux*,,s390x-*-linux*}
@item
@uref{#*-*-solaris2*,,*-*-solaris2*}
@item
@item
@uref{#vax-dec-ultrix,,vax-dec-ultrix}
@item
+@uref{#*-*-vxworks*,,*-*-vxworks*}
+@item
@uref{#xtensa-*-elf,,xtensa-*-elf}
@item
@uref{#xtensa-*-linux*,,xtensa-*-linux*}
@html
<!-- -------- host/target specific issues start here ---------------- -->
-<hr>
+<hr />
@end html
@heading @anchor{alpha*-*-*}alpha*-*-*
shared libraries.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{alpha*-dec-osf*}alpha*-dec-osf*
Systems using processors that implement the DEC Alpha architecture and
supported. (These are the versions which identify themselves as DEC
OSF/1.)
+In Digital Unix V4.0, virtual memory exhausted bootstrap failures
+may be fixed by configuring with @option{--with-gc=simple},
+reconfiguring Kernel Virtual Memory and Swap parameters
+per the @command{/usr/sbin/sys_check} Tuning Suggestions,
+or applying the patch in
+@uref{http://gcc.gnu.org/ml/gcc/2002-08/msg00822.html}.
+
In Tru64 UNIX V5.1, Compaq introduced a new assembler that does not
currently (2001-06-13) work with @command{mips-tfile}. As a workaround,
we need to use the old assembler, invoked via the barely documented
provide a fix shortly.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{alphaev5-cray-unicosmk*}alphaev5-cray-unicosmk*
Cray T3E systems running Unicos/Mk.
simplest way to do so is by providing @option{--with-as} and
@option{--with-ld} to @file{configure}, e.g.@:
-@samp{configure --with-as=/opt/ctl/bin/cam --with-ld=/opt/ctl/bin/cld
---enable-languages=c}
+@example
+ configure --with-as=/opt/ctl/bin/cam --with-ld=/opt/ctl/bin/cld \
+ --enable-languages=c
+@end example
The comparison test during @samp{make bootstrap} fails on Unicos/Mk
because the assembler inserts timestamps into object files. You should
failure.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{arc-*-elf}arc-*-elf
Argonaut ARC processor.
This configuration is intended for embedded systems.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{arm-*-aout}arm-*-aout
Advanced RISC Machines ARM-family processors. These are often used in
configuration.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{arm-*-elf}arm-*-elf
This configuration is intended for embedded systems.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{arm*-*-linux-gnu}arm*-*-linux-gnu
We require GNU binutils 2.10 or newer.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{avr}avr
@itemize @bullet
@item
-@uref{http://home.overta.ru/users/denisc,,http://home.overta.ru/users/denisc}
+@uref{http://www.openavr.org,,http://www.openavr.org}
+@item
+@uref{http://home.overta.ru/users/denisc/,,http://home.overta.ru/users/denisc/}
@item
-@uref{http://www.amelek.gda.pl/avr,,http://www.amelek.gda.pl/avr}
+@uref{http://www.amelek.gda.pl/avr/,,http://www.amelek.gda.pl/avr/}
@end itemize
-We @emph{strongly} recommend using binutils 2.11 or newer.
+We @emph{strongly} recommend using binutils 2.13 or newer.
The following error:
@example
indicates that you should upgrade to a newer version of the binutils.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{c4x}c4x
@end itemize
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{cris}CRIS
@uref{http://developer.axis.com/}.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{dos}DOS
and includes all the necessary compilation tools and libraries.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{dsp16xx}dsp16xx
A port to the AT&T DSP1610 family of processors.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{*-*-freebsd*}*-*-freebsd*
particular, @option{--enable-threads} is now configured by default.
However, as a general user, do not attempt to replace the system
compiler with this release. Known to bootstrap and check with good
-results on FreeBSD 3.0, 3.4, 4.0, 4.2, 4.3, 4.4, 4.5-STABLE and 5-CURRENT@.
+results on FreeBSD 4.8-STABLE and 5-CURRENT@. In the past, known to
+bootstrap and check with good results on FreeBSD 3.0, 3.4, 4.0, 4.2,
+4.3, 4.4, 4.5-STABLE@.
In principle, @option{--enable-threads} is now compatible with
@option{--enable-libgcj} on FreeBSD@. However, it has only been built
-and tested on i386-*-freebsd4.5 and alpha-*-freebsd5.0. The static
+and tested on @samp{i386-*-freebsd[45]} and @samp{alpha-*-freebsd[45]}.
+The static
library may be incorrectly built (symbols are missing at link time).
There is a rare timing-based startup hang (probably involves an
-assupmtion about the thread library). Multi-threaded boehm-gc (required for
+assumption about the thread library). Multi-threaded boehm-gc (required for
libjava) exposes severe threaded signal-handling bugs on FreeBSD before
-4.5-RELEASE. The alpha port may not fully bootstrap without some manual
-intervention: gcjh will crash with a floating-point exception while
-generating @file{java/lang/Double.h} (just copy the version built on
-i386-*-freebsd* and rerun the top-level gmake with no arguments and it
-should properly complete the bootstrap). Other CPU architectures
+4.5-RELEASE@. Other CPU architectures
supported by FreeBSD will require additional configuration tuning in, at
the very least, both boehm-gc and libffi.
Shared @file{libgcc_s.so} is now built and installed by default.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{h8300-hms}h8300-hms
Hitachi H8/300 series of processors.
longer a multiple of 2 bytes.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{hppa*-hp-hpux*}hppa*-hp-hpux*
@uref{./configure.html#with-gnu-as,,@option{--with-gnu-as}} and
@option{--with-as=@dots{}} options.
-If you wish to use pa-risc 2.0 architecture support, you must use either
-the HP assembler, gas/binutils 2.11 or a recent
+If you wish to use the pa-risc 2.0 architecture support with a 32-bit
+runtime, you must use either the HP assembler, gas/binutils 2.11 or newer,
+or a recent
@uref{ftp://sources.redhat.com/pub/binutils/snapshots,,snapshot of gas}.
There are two default scheduling models for instructions. These are
More specific information to @samp{hppa*-hp-hpux*} targets follows.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{hppa*-hp-hpux9}hppa*-hp-hpux9
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{hppa*-hp-hpux10}hppa*-hp-hpux10
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{hppa*-hp-hpux11}hppa*-hp-hpux11
-GCC 3.0 and up support HP-UX 11. You must use GNU binutils 2.11 or above on
-this platform. Thread support is not currently implemented for this
-platform, so @option{--enable-threads} does not work.
-See @uref{http://gcc.gnu.org/ml/gcc-prs/2002-01/msg00551.html}
-and @uref{http://gcc.gnu.org/ml/gcc-bugs/2002-01/msg00663.html}.
+GCC 3.0 and up support HP-UX 11. On 64-bit capable systems, there
+are two distinct ports. The @samp{hppa2.0w-hp-hpux11*} port generates
+code for the 32-bit pa-risc runtime architecture. It uses the HP
+linker. The @samp{hppa64-hp-hpux11*} port generates 64-bit code for the
+pa-risc 2.0 architecture. The script config.guess now selects the port
+type based on the type compiler detected during configuration. You must
+set your @env{PATH} or define @env{CC} so that configure finds an appropriate
+compiler for the initial bootstrap. Different prefixes must be used if
+both ports are to be installed on the same system.
+
GCC 2.95.x is not supported under HP-UX 11 and cannot be used to
compile GCC 3.0 and up. Refer to @uref{binaries.html,,binaries} for
information about obtaining precompiled GCC binaries for HP-UX.
-@html
-</p>
-<hr>
+You must use GNU binutils 2.11 or above with the 32-bit port. Thread
+support is not currently implemented, so @option{--enable-threads} does
+not work. See:
+
+@itemize
+@item @uref{http://gcc.gnu.org/ml/gcc-prs/2002-01/msg00551.html}
+@item @uref{http://gcc.gnu.org/ml/gcc-bugs/2002-01/msg00663.html}
+@end itemize
+
+GCC 3.3 and later support weak symbols on the 32-bit port using SOM
+secondary definition symbols. This feature is not enabled for earlier
+versions of HP-UX since there have been bugs in the linker support for
+secondary symbols. The HP linker patches @code{PHSS_26559} and
+@code{PHSS_24304} for HP-UX 11.00 and 11.11, respectively, correct the
+problem of linker core dumps creating C++ libraries. Earlier patches
+may work but they have not been tested.
+
+GCC 3.3 nows uses the ELF DT_INIT_ARRAY and DT_FINI_ARRAY capability
+to run initializers and finalizers on the 64-bit port. The feature
+requires CVS binutils as of January 2, 2003, or a subsequent release
+to correct a problem arising from HP's non-standard use of the .init
+and .fini sections. The 32-bit port uses the linker @option{+init}
+and @option{+fini} options. As with the support for secondary symbols,
+there have been bugs in the order in which these options are executed
+by the HP linker. So, again a recent linker patch is recommended.
+
+The HP assembler has many limitations and is not recommended for either
+the 32 or 64-bit ports. For example, it does not support weak symbols
+or alias definitions. As a result, explicit template instantiations
+are required when using C++. You also can't generate debugging information
+when using the HP assembler. Either the HP or GNU linker can be used
+with the 64-bit port but it may be necessary to use the GNU linker
+when dwarf2 exception support is implemented.
+
+There are several possible approaches to building the distribution.
+Binutils can be built first using the HP tools. Then, the GCC
+distribution can be built. The second approach is to build GCC
+first using the HP tools, then build binutils, then rebuild GCC.
+There have been problems with various binary distributions, so
+it is best not to start from a binary distribution.
+
+When starting with a HP compiler, it is preferable to use the ANSI
+compiler as the bundled compiler only supports traditional C.
+Bootstrapping with the bundled compiler is tested infrequently and
+problems often arise because of the subtle differences in semantics
+between traditional and ISO C.
+
+This port still is undergoing significant development.
+
+@html
+<hr />
@end html
@heading @anchor{i370-*-*}i370-*-*
This port is very preliminary and has many known bugs. We hope to
have a higher-quality port for this machine soon.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{*-*-linux-gnu}*-*-linux-gnu
+Versions of libstdc++-v3 starting with 3.2.1 require bugfixes present
+in glibc 2.2.5 and later. More information is available in the
+libstdc++-v3 documentation.
+
If you use glibc 2.2 (or 2.1.9x), GCC 2.95.2 won't install
out-of-the-box. You'll get compile errors while building @samp{libstdc++}.
The patch @uref{glibc-2.2.patch,,glibc-2.2.patch}, that is to be
applied in the GCC source tree, fixes the compatibility problems.
-@html
-</p>
-@end html
-
-@html
-<p>
-@end html
-
Currently Glibc 2.2.3 (and older releases) and GCC 3.0 are out of sync
since the latest exception handling changes for GCC@. Compiling glibc
with GCC 3.0 will give a binary incompatible glibc and therefore cause
-lots of problems and might make your system completly unusable. This
-will definitly need fixes in glibc but might also need fixes in GCC@. We
+lots of problems and might make your system completely unusable. This
+will definitely need fixes in glibc but might also need fixes in GCC@. We
strongly advise to wait for glibc 2.2.4 and to read the release notes of
glibc 2.2.4 whether patches for GCC 3.0 are needed. You can use glibc
2.2.3 with GCC 3.0, just do not try to recompile it.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{ix86-*-linux*aout}i?86-*-linux*aout
Use this configuration to generate @file{a.out} binaries on Linux-based
gas/binutils version 2.5.2 or later.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{ix86-*-linux*}i?86-*-linux*
found on @uref{http://www.bitwizard.nl/sig11/,,www.bitwizard.nl}.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{ix86-*-sco}i?86-*-sco
Compilation with RCC is recommended. Also, it may be a good idea to
link with GNU malloc instead of the malloc that comes with the system.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{ix86-*-sco3.2v4}i?86-*-sco3.2v4
Use this configuration for SCO release 3.2 version 4.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{ix86-*-sco3.2v5*}i?86-*-sco3.2v5*
Use this for the SCO OpenServer Release 5 family of operating systems.
Systems based on OpenServer before 5.0.4 (@samp{uname -X}
will tell you what you're running) require TLS597 from
-@uref{ftp://ftp.sco.com/TLS/,,ftp://ftp.sco.com/TLS/}
+@uref{ftp://stage.caldera.com/TLS/,,ftp://stage.caldera.com/TLS/}
for C++ constructors and destructors to work right.
The system linker in (at least) 5.0.4 and 5.0.5 will sometimes
@option{-fPIC} on @file{921215-1.c}, @file{931002-1.c}, @file{nestfunc-1.c}, and @file{gcov-1.c}.
For 5.0.5, an updated linker that will cure this problem is
available. You must install both
-@uref{ftp://ftp.sco.com/Supplements/rs505a/,,ftp://ftp.sco.com/Supplements/rs505a/}
-and @uref{ftp://ftp.sco.com/SLS/,,OSS499A}.
+@uref{ftp://ftp.sco.com/pub/openserver5/rs505a,,ftp://ftp.sco.com/pub/openserver5/rs505a}
+and @uref{ftp://ftp.sco.com/pub/openserver5,,OSS499A}.
The dynamic linker in OpenServer 5.0.5 (earlier versions may show
the same problem) aborts on certain G77-compiled programs. It's particularly
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{ix86-*-udk}i?86-*-udk
building a cross compiler. The easiest way to do this is with a configure
command like this:
-@samp{CC=/udk/usr/ccs/bin/cc @var{/your/path/to}/gcc/configure
---host=i686-pc-udk --target=i686-pc-udk --program-prefix=udk-}
+@example
+ CC=/udk/usr/ccs/bin/cc @var{/your/path/to}/gcc/configure \
+ --host=i686-pc-udk --target=i686-pc-udk --program-prefix=udk-
+@end example
@emph{You should substitute @samp{i686} in the above command with the appropriate
processor for your host.}
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{ia64-*-linux}ia64-*-linux
IA-64 processor (also known as IPF, or Itanium Processor Family)
ABI changes are expected.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{*-lynx-lynxos}*-lynx-lynxos
LynxOS 2.2 and earlier comes with GCC 1.x already installed as
installed tools, which produce @file{a.out} format executables.
@html
-</p>
-<hr>
+<hr />
<!-- rs6000-ibm-aix*, powerpc-ibm-aix* -->
@end html
@heading @anchor{*-ibm-aix*}*-ibm-aix*
is the version of Make (see above).
The GNU Assembler incorrectly reports that it supports WEAK symbols on
-AIX which causes GCC to try to utilize weak symbol functionality which
-is not really supported on the platform. The native @command{as} and
+AIX which causes GCC to try to utilize weak symbol functionality although
+it is not supported on the platform. The native @command{as} and
@command{ld} still are recommended. The native AIX tools do
interoperate with GCC@.
Extract the shared object from each the GCC 3.1 @file{libstdc++.a}
archive:
@example
- % ar -x libstdc++.so.4 libstdc++.a
+ % ar -x libstdc++.a libstdc++.so.4
@end example
Enable the @samp{F_LOADONLY} flag so that the shared object will be
Archive the runtime-only shared object in the GCC 3.2
@file{libstdc++.a} archive:
@example
- % ar -q libstdc++.so.4 libstdc++.a
+ % ar -q libstdc++.a libstdc++.so.4
@end example
Linking executables and shared libraries may produce warnings of
switch and using the configure option @option{--with-cpu-@var{cpu_type}}.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{ip2k-*-elf}ip2k-*-elf
Ubicom IP2022 micro controller.
Use @samp{configure --target=ip2k-elf --enable-languages=c} to configure GCC@.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{m32r-*-elf}m32r-*-elf
Mitsubishi M32R processor.
This configuration is intended for embedded systems.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{m68000-hp-bsd}m68000-hp-bsd
HP 9000 series 200 running BSD@. Note that the C compiler that comes
to get binaries of GCC for bootstrapping.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{m6811-elf}m6811-elf
Motorola 68HC11 family micro controllers. These are used in embedded
applications. There are no standard Unix configurations.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{m6812-elf}m6812-elf
Motorola 68HC12 family micro controllers. These are used in embedded
applications. There are no standard Unix configurations.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{m68k-att-sysv}m68k-att-sysv
AT&T 3b1, a.k.a.@: 7300 PC@. This version of GCC cannot
be compiled with the system C compiler, which is too buggy.
You will need to get a previous version of GCC and use it to
bootstrap. Binaries are available from the OSU-CIS archive, at
-@uref{ftp://archive.cis.ohio-state.edu/pub/att7300/}.
+@uref{ftp://ftp.uu.net/systems/att7300/}.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{m68k-crds-unos}m68k-crds-unos
Use @samp{configure unos} for building on Unos.
and linking from that library.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{m68k-hp-hpux}m68k-hp-hpux
HP 9000 series 300 or 400 running HP-UX@. HP-UX version 8.0 has a bug in
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{m68k-ncr-*}m68k-ncr-*
On the Tower models 4@var{n}0 and 6@var{n}0, by default a process is not
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{m68k-sun}m68k-sun
Sun 3. We do not provide a configuration file to use the Sun FPA by
point traps inherently cannot work with the FPA@.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{m68k-sun-sunos4.1.1}m68k-sun-sunos4.1.1
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{mips-*-*}mips-*-*
If on a MIPS system you get an error message saying ``does not have gp
not have GNU @command{make} available.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{mips-sgi-irix6}mips-sgi-irix6
information about using GCC on IRIX platforms.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{powerpc*-*-*}powerpc-*-*
switch by using the configure option @option{--with-cpu-@var{cpu_type}}.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{powerpc-*-darwin*}powerpc-*-darwin*
PowerPC running Darwin (Mac OS X kernel).
-GCC 3.0 does not support Darwin, but 3.1 and later releases will work.
-
Pre-installed versions of Mac OS X may not include any developer tools,
meaning that you will not be able to build GCC from source. Tool
binaries are available at
-@uref{http://www.opensource.apple.com/projects/darwin} (free
+@uref{http://www.opensource.apple.com/projects/darwin/} (free
registration required).
-Versions of the assembler prior to ``cctools-364'' cannot handle the
-4-argument form of rlwinm and related mask-using instructions. Darwin
-1.3 (Mac OS X 10.0) uses cctools-353 for instance. To get cctools-364,
+If you're using Darwin 1.3 (Mac OS X 10.0) or earlier, you will need
+to upgrade the assembler to version ``cctools-364''. To get cctools-364,
check out @file{cctools} with tag @samp{Apple-364}, build it, and
install the assembler as @file{usr/bin/as}. See
@uref{http://www.opensource.apple.com/tools/cvs/docs.html} for details.
-Also, the default stack limit of 512K is too small, and a bootstrap will
-typically fail when self-compiling @file{expr.c}. Set the stack to 800K
-or more, for instance by doing @samp{limit stack 800}. It's also
-convenient to use the GNU preprocessor instead of Apple's during the
-first stage of bootstrapping; this is automatic when doing @samp{make
-bootstrap}, but to do it from the toplevel objdir you will need to say
-@samp{make CC='cc -no-cpp-precomp' bootstrap}.
+The default stack limit of 512K is too small, which may cause compiles
+to fail with 'Bus error'. Set the stack larger, for instance
+by doing @samp{limit stack 800}. It's a good idea to use the GNU
+preprocessor instead of Apple's @file{cpp-precomp} during the first stage of
+bootstrapping; this is automatic when doing @samp{make bootstrap}, but
+to do it from the toplevel objdir you will need to say @samp{make
+CC='cc -no-cpp-precomp' bootstrap}.
-Note that the version of GCC shipped by Apple typically includes a
-number of extensions not available in a standard GCC release. These
-extensions are generally specific to Mac programming.
+The version of GCC shipped by Apple typically includes a number of
+extensions not available in a standard GCC release. These extensions
+are generally specific to Mac programming.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{powerpc-*-elf}powerpc-*-elf, powerpc-*-sysv4
PowerPC system in big endian mode, running System V.4.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{powerpc-*-linux-gnu*}powerpc-*-linux-gnu*
You will need
-@uref{ftp://ftp.kernel.org/pub/linux/devel/binutils,,binutils 2.12.90.0.7}
+@uref{ftp://ftp.kernel.org/pub/linux/devel/binutils,,binutils 2.13.90.0.10}
or newer for a working GCC@.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{powerpc-*-netbsd*}powerpc-*-netbsd*
PowerPC system in big endian mode running NetBSD@. To build the
-documentation you will need Texinfo version 4.1 (NetBSD 1.5.1 included
+documentation you will need Texinfo version 4.2 (NetBSD 1.5.1 included
Texinfo version 3.12).
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{powerpc-*-eabiaix}powerpc-*-eabiaix
Embedded PowerPC system in big endian mode with @option{-mcall-aix} selected as
the default.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{powerpc-*-eabisim}powerpc-*-eabisim
Embedded PowerPC system in big endian mode for use in running under the
PSIM simulator.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{powerpc-*-eabi}powerpc-*-eabi
Embedded PowerPC system in big endian mode.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{powerpcle-*-elf}powerpcle-*-elf, powerpcle-*-sysv4
PowerPC system in little endian mode, running System V.4.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{powerpcle-*-eabisim}powerpcle-*-eabisim
Embedded PowerPC system in little endian mode for use in running under
the PSIM simulator.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{powerpcle-*-eabi}powerpcle-*-eabi
Embedded PowerPC system in little endian mode.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{powerpcle-*-winnt}powerpcle-*-winnt, powerpcle-*-pe
PowerPC system in little endian mode running Windows NT@.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{s390-*-linux*}s390-*-linux*
S/390 system running Linux for S/390@.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{s390x-*-linux*}s390x-*-linux*
zSeries system (64-bit) running Linux for zSeries@.
@html
-</p>
-<hr>
+<hr />
@end html
@c Please use Solaris 2 to refer to all release of Solaris, starting
@c with 2.0 until 2.6, 7, and 8. Solaris 1 was a marketing name for
108653-22 for Intel) that fix this bug.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{sparc-sun-solaris2*}sparc-sun-solaris2*
Sun @command{as} 4.x is broken in that it cannot cope with long symbol names.
A typical error message might look similar to the following:
-@samp{/usr/ccs/bin/as: "/var/tmp/ccMsw135.s", line 11041:
-error: can't compute value of an expression involving an external symbol.}
+@smallexample
+/usr/ccs/bin/as: "/var/tmp/ccMsw135.s", line 11041: error:
+ can't compute value of an expression involving an external symbol.
+@end smallexample
This is Sun bug 4237974. This is fixed with patch 108908-02 for Solaris
2.6 and has been fixed in later (5.x) versions of the assembler,
64-bit target libraries.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{sparc-sun-solaris2.7}sparc-sun-solaris2.7
@html
<p>
-<hr>
+<hr />
@end html
@heading @anchor{sparc-sun-sunos4*}sparc-sun-sunos4*
@command{make}.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{sparc-unknown-linux-gnulibc1}sparc-unknown-linux-gnulibc1
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{sparc-*-linux*}sparc-*-linux*
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{sparc64-*-*}sparc64-*-*
recognize (via @samp{uname -a}) the system as @samp{sparc-*-*} instead.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{sparcv9-*-solaris2*}sparcv9-*-solaris2*
specifies the v9 architecture to the Sun linker and assembler.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{#*-*-sysv*}*-*-sysv*
On System V release 3, you may get this error message
@file{/usr/ucb} uses libraries which have bugs.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{vax-dec-ultrix}vax-dec-ultrix
Don't try compiling with VAX C (@code{vcc}). It produces incorrect code
in some cases (for example, when @code{alloca} is used).
@html
-</p>
-<hr>
+<hr />
+@end html
+@heading @anchor{*-*-vxworks*}*-*-vxworks*
+Support for VxWorks is in flux. At present GCC supports @emph{only} the
+very recent VxWorks 5.5 (aka Tornado 2.2) release, and only on PowerPC.
+We welcome patches for other architectures supported by VxWorks 5.5.
+Support for VxWorks AE would also be welcome; we believe this is merely
+a matter of writing an appropriate ``configlette'' (see below). We are
+not interested in supporting older, a.out or COFF-based, versions of
+VxWorks in GCC 3.
+
+VxWorks comes with an older version of GCC installed in
+@file{@var{$WIND_BASE}/host}; we recommend you do not overwrite it.
+Choose an installation @var{prefix} entirely outside @var{$WIND_BASE}.
+Before running @command{configure}, create the directories @file{@var{prefix}}
+and @file{@var{prefix}/bin}. Link or copy the appropriate assembler,
+linker, etc. into @file{@var{prefix}/bin}, and set your @var{PATH} to
+include that directory while running both @command{configure} and
+@command{make}.
+
+You must give @command{configure} the
+@option{--with-headers=@var{$WIND_BASE}/target/h} switch so that it can
+find the VxWorks system headers. Since VxWorks is a cross compilation
+target only, you must also specify @option{--target=@var{target}}.
+@command{configure} will attempt to create the directory
+@file{@var{prefix}/@var{target}/sys-include} and copy files into it;
+make sure the user running @command{configure} has sufficient privilege
+to do so.
+
+GCC's exception handling runtime requires a special ``configlette''
+module, @file{contrib/gthr_supp_vxw_5x.c}. Follow the instructions in
+that file to add the module to your kernel build. (Future versions of
+VxWorks will incorporate this module.)
+
+@html
+<hr />
@end html
@heading @anchor{xtensa-*-elf}xtensa-*-elf
which you can use to replace the default header file.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{xtensa-*-linux*}xtensa-*-linux*
@uref{#xtensa-*-elf,,@samp{xtensa-*-elf}} target.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{windows}Microsoft Windows (32-bit)
without modification.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{os2}OS/2
ftp://ftp.leo.org/pub/comp/os/os2/leo/devtools/emx+gcc/}.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{older}Older systems
current GCC) is to be found in the GCC texinfo manual.
@html
-</p>
-<hr>
+<hr />
@end html
@heading @anchor{elf_targets}all ELF targets (SVR4, Solaris 2, etc.)
@html
-</p>
-<hr>
+<hr />
<p>
@end html
@ifhtml
@ifset oldhtml
@include install-old.texi
@html
-</p>
-<hr>
+<hr />
<p>
@end html
@ifhtml
@ifset gfdlhtml
@include fdl.texi
@html
-</p>
-<hr>
+<hr />
<p>
@end html
@ifhtml
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