@ifset binarieshtml
@settitle Installing GCC: Binaries
@end ifset
+@ifset oldhtml
+@settitle Installing GCC: Old documentation
+@end ifset
+@ifset gfdlhtml
+@settitle Installing GCC: GNU Free Documentation License
+@end ifset
-@comment $Id: install.texi,v 1.32 2001/06/21 19:00:08 pme Exp $
-@c Copyright (C) 2001 Free Software Foundation, Inc.
+@c Copyright (C) 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
+@c 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
@c *** Converted to texinfo by Dean Wakerley, dean@wakerley.com
@c Include everything if we're not making html
@set testhtml
@set finalinstallhtml
@set binarieshtml
+@set oldhtml
+@set gfdlhtml
@end ifnothtml
@c Part 2 Summary Description and Copyright
+@macro copyrightnotice
+Copyright @copyright{} 1988, 1989, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
+1999, 2000, 2001, 2002 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
+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
+license is included in the section entitled ``@uref{./gfdl.html,,GNU
+Free Documentation License}''.
+
+(a) The FSF's Front-Cover Text is:
+
+ A GNU Manual
+
+(b) The FSF's Back-Cover Text is:
+
+ 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
@ifinfo
-
-Copyright @copyright{} 2001 Free Software Foundation, Inc.
+@copyrightnotice{}
@end ifinfo
@c Part 3 Titlepage and Copyright
@c The following two commands start the copyright page.
@page
@vskip 0pt plus 1filll
-Copyright @copyright{} 2001 Free Software Foundation, Inc.
+@copyrightnotice{}
@end titlepage
@c Part 4 Top node and Master Menu
@menu
* Installing GCC:: This document describes the generic installation
procedure for GCC as well as detailing some target
- specific installation instructions.
+ specific installation instructions.
* Specific:: Host/target specific installation notes for GCC.
* Binaries:: Where to get pre-compiled binaries.
+* Old:: Old installation documentation.
+
+* GNU Free Documentation License:: How you can copy and share this manual.
* Concept Index:: This index has two entries.
@end menu
@end ifinfo
@end ifnothtml
The latest version of this document is always available at
-@uref{http://gcc.gnu.org/install/,,http://gcc.gnu.org/install/}.
+@uref{http://gcc.gnu.org/install/,,http://gcc.gnu.org/install/}.
This document describes the generic installation procedure for GCC as well
-as detailing some target specific installation instructions.
+as detailing some target specific installation instructions.
-GCC includes several components that previously were separate distributions
-with their own installation instructions. This document supersedes all
-package specific installation instructions. We provide the component
-specific installation information in the source distribution for historical
-reference purposes only.
+GCC includes several components that previously were separate distributions
+with their own installation instructions. This document supersedes all
+package specific installation instructions.
-@emph{Before} starting the build/install procedure please check the
+@emph{Before} starting the build/install procedure please check the
@ifnothtml
-@xref{Specific, host/target specific installation notes}.
+@ref{Specific, host/target specific installation notes}.
@end ifnothtml
-@ifnotinfo
-@uref{specific.html,,host/target specific installation notes}.
-@end ifnotinfo
-We recommend you browse the entire generic installation instructions before
+@ifhtml
+@uref{specific.html,,host/target specific installation notes}.
+@end ifhtml
+We recommend you browse the entire generic installation instructions before
you proceed.
-The installation procedure itself is broken into five steps.
+Lists of successful builds for released versions of GCC are
+available at our web pages for
+@uref{http://gcc.gnu.org/gcc-3.0/buildstat.html,,3.0}
+and
+@uref{http://gcc.gnu.org/gcc-2.95/buildstat.html,,2.95}.
+These lists are updated as new information becomes available.
+
+The installation procedure itself is broken into five steps.
@ifinfo
@menu
* Final install::
@end menu
@end ifinfo
-@ifnotinfo
+@ifhtml
@enumerate
-@item
+@item
@uref{download.html,,Downloading the source}
-@item
-@uref{configure.html,,Configuration}
@item
-@uref{build.html,,Building}
-@item
-@uref{test.html,,Testing} (optional)
+@uref{configure.html,,Configuration}
+@item
+@uref{build.html,,Building}
+@item
+@uref{test.html,,Testing} (optional)
@item
@uref{finalinstall.html,,Final install}
@end enumerate
-@end ifnotinfo
+@end ifhtml
Please note that GCC does not support @samp{make uninstall} and probably
-won't do so in the near future as this would open a can of worms. Instead,
+won't do so in the near future as this would open a can of worms. Instead,
we suggest that you install GCC into a directory of its own and simply
remove that directory when you do not need that specific version of GCC
-any longer.
+any longer, and, if shared libraries are installed there as well, no
+more binaries exist that use them.
+
+@ifhtml
+There are also some @uref{old.html,,old installation instructions},
+which are mostly obsolete but still contain some information which has
+not yet been merged into the main part of this manual.
+@end ifhtml
@html
<hr>
@end html
@ifhtml
@uref{./index.html,,Return to the GCC Installation page}
+
+@copyrightnotice{}
@end ifhtml
@end ifset
@cindex Downloading GCC
@cindex Downloading the Source
-GCC is distributed via CVS and FTP tarballs compressed with @command{gzip} or
+GCC is distributed via @uref{http://gcc.gnu.org/cvs.html,,CVS} and FTP
+tarballs compressed with @command{gzip} or
@command{bzip2}. It is possible to download a full distribution or specific
components.
Please refer to our @uref{http://gcc.gnu.org/releases.html,,releases web page}
-for information on how to obtain GCC.
+for information on how to obtain GCC@.
The full distribution includes the C, C++, Objective-C, Fortran, Java,
-and Chill compilers. The full distribution also includes runtime libraries
-for C++, Objective-C, Fortran, Java and Chill. (GCC 3.0 does not
-include Chill. Releases before 3.0 do not include the Java runtime
-library.) In GCC 3.0 and later versions, GNU compiler testsuites
-are also included in the full distribution.
+and Ada (in case of GCC 3.1 and later) compilers. The full distribution
+also includes runtime libraries for C++, Objective-C, Fortran, and Java.
+In GCC 3.0 and later versions, GNU compiler testsuites are also included
+in the full distribution.
If you choose to download specific components, you must download the core
-gcc distribution plus any language specific distributions you wish to
+GCC distribution plus any language specific distributions you wish to
use. The core distribution includes the C language front end as well as the
-shared components. Each language has a tarball which includes the language
+shared components. Each language has a tarball which includes the language
front end as well as the language runtime (when appropriate).
Unpack the core distribution as well as any language specific
@file{gcc} directory, the one where the @file{MAINTAINERS} can be found,
and not its @file{gcc} subdirectory, otherwise the build will fail.
-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.
+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.
-If you have built GNU CC previously in the same directory for a
+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}
your environment before running configure. Otherwise the configuration
scripts may fail.
+Note that the bootstrap compiler and the resulting GCC must be link
+compatible, else the bootstrap will fail with linker errors about
+incompatible object file formats. Several multilibed targets are
+affected by this requirement, see
+@ifnothtml
+@ref{Specific, host/target specific installation notes}.
+@end ifnothtml
+@ifhtml
+@uref{specific.html,,host/target specific installation notes}.
+@end ifhtml
+
To configure GCC:
@example
% mkdir @var{objdir}
% cd @var{objdir}
- % @var{srcdir}/configure [@var{target}] [@var{options}]
+ % @var{srcdir}/configure [@var{options}] [@var{target}]
@end example
@itemize @bullet
@item
GCC has code to correctly determine the correct value for @var{target}
-for nearly all native systems. Therefore, we highly recommend you not
+for nearly all native systems. Therefore, we highly recommend you not
provide a configure target when configuring a native compiler.
@item
@var{target} must be specified as @option{--target=@var{target}}
-when configuring a cross compiler; examples of valid targets would be
+when configuring a cross compiler; examples of valid targets would be
i960-rtems, m68k-coff, sh-elf, etc.
@item
@heading Options specification
Use @var{options} to override several configure time options for
-GCC. A partial list of supported @var{options}:
+GCC@. A list of supported @var{options} follows; @command{configure
+--help} may list other options, but those not listed below may not
+work and should not normally be used.
@table @code
@item --prefix=@var{dirname}
@item --libdir=@var{dirname}
Specify the installation directory for object code libraries and
-internal parts of GCC. The default is @file{@var{exec-prefix}/lib}.
+internal parts of GCC@. The default is @file{@var{exec-prefix}/lib}.
@item --with-slibdir=@var{dirname}
Specify the installation directory for the shared libgcc library. The
@item --with-gxx-include-dir=@var{dirname}
Specify
-the installation directory for g++ header files. The default is
+the installation directory for G++ header files. The default is
@file{@var{prefix}/include/g++-v3}.
@end table
+@item --program-prefix=@var{prefix}
+GCC supports some transformations of the names of its programs when
+installing them. This option prepends @var{prefix} to the names of
+programs to install in @var{bindir} (see above). For example, specifying
+@option{--program-prefix=foo-} would result in @samp{gcc}
+being installed as @file{/usr/local/bin/foo-gcc}.
+
+@item --program-suffix=@var{suffix}
+Appends @var{suffix} to the names of programs to install in @var{bindir}
+(see above). For example, specifying @option{--program-suffix=-3.1}
+would result in @samp{gcc} being installed as
+@file{/usr/local/bin/gcc-3.1}.
+
+@item --program-transform-name=@var{pattern}
+Applies the @samp{sed} script @var{pattern} to be applied to the names
+of programs to install in @var{bindir} (see above). @var{pattern} has to
+consist of one or more basic @samp{sed} editing commands, separated by
+semicolons. For example, if you want the @samp{gcc} program name to be
+transformed to the installed program @file{/usr/local/bin/myowngcc} and
+the @samp{g++} program name to be transformed to
+@file{/usr/local/bin/gspecial++} without changing other program names,
+you could use the pattern
+@option{--program-transform-name='s/^gcc$/myowngcc/; s/^g++$/gspecial++/'}
+to achieve this effect.
+
+All three options can be combined and used together, resulting in more
+complex conversion patterns. As a basic rule, @var{prefix} (and
+@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
+builds; cross compiler binaries' names are not transformed even when a
+transformation is explicitly asked for by one of this options.
+
+For native builds, some of the installed programs are also installed
+with the target alias in front of their name, as in
+@samp{i686-pc-linux-gnu-gcc}. All of the above transformations happen
+before the target alias is prepended to the name - so, specifying
+@option{--program-prefix=foo-} and @option{program-suffix=-3.1}, the
+resulting binary would be installed as
+@file{/usr/local/bin/i686-pc-linux-gnu-foo-gcc-3.1}.
+
+As a last shortcoming, none of the installed Ada programs are
+transformed yet, which will be fixed in some time.
+
@item --with-local-prefix=@var{dirname}
Specify the
installation directory for local include files. The default is
The purpose of @option{--prefix} is to specify where to @emph{install
GCC}. The local header files in @file{/usr/local/include}---if you put
-any in that directory---are not part of GCC. They are part of other
+any in that directory---are not part of GCC@. They are part of other
programs---perhaps many others. (GCC installs its own header files in
another directory which is based on the @option{--prefix} value.)
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
-install part of GCC. Perhaps they make this assumption because
+install part of GCC@. Perhaps they make this assumption because
installing GCC creates the directory.
@item --enable-shared[=@var{package}[,@dots{}]]
Build shared versions of libraries, if shared libraries are supported on
the target platform. Unlike GCC 2.95.x and earlier, shared libraries
-are enabled by default on all platforms that support shared libraries.
+are enabled by default on all platforms that support shared libraries,
+except for @samp{libobjc} which is built as a static library only by
+default.
If a list of packages is given as an argument, build shared libraries
only for the listed packages. For other packages, only static libraries
@samp{libstdc++-v3}), @samp{libffi}, @samp{zlib}, @samp{boehm-gc} and
@samp{libjava}. Note that @samp{libobjc} does not recognize itself by
any name, so, if you list package names in @option{--enable-shared},
-you'll only get static Objective-C libraries. @samp{libf2c} and
+you will only get static Objective-C libraries. @samp{libf2c} and
@samp{libiberty} do not support shared libraries at all.
Use @option{--disable-shared} to build only static libraries. Note that
@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
+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
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=@file{/path/to/gas}}.
+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}},
386, and for @samp{mips-sgi-irix5.*}), if you use the GNU assembler,
you should also use the GNU linker (and specify @option{--with-gnu-ld}).
-@item --with-as=@file{/path/to/as}
+@item --with-as=@var{pathname}
Specify that the
compiler should use the assembler pointed to by @var{pathname}, rather
than the one found by the standard rules to find an assembler, which
@file{@var{exec_prefix}/lib/gcc-lib/@var{target}/@var{version}}
directory, where @var{exec_prefix} defaults to @var{prefix} which
defaults to @file{/usr/local} unless overridden by the
-@option{--prefix=/pathname} switch described above. @var{target} is the
-target system triple, such as @var{sparc-sun-solaris2.7}, and
-@var{version} denotes the GCC version, such as 2.95.2.
+@option{--prefix=@var{pathname}} switch described above. @var{target} is the
+target system triple, such as @samp{sparc-sun-solaris2.7}, and
+@var{version} denotes the GCC version, such as 3.0.
@item
-Check operating system specific directories (e.g. @file{/usr/ccs/bin} on
-Sun Solaris).
+Check operating system specific directories (e.g.@: @file{/usr/ccs/bin} on
+Sun Solaris 2).
@end itemize
-Note that these rules do not check for the value of @env{PATH}. You may
+Note that these rules do not check for the value of @env{PATH}. You may
want to use @option{--with-as} if no assembler is installed in the
directories listed above, or if you have multiple assemblers installed
and want to choose one that is not found by the above rules.
but for linker.
-@item --with-ld=@file{/path/to/ld}
+@item --with-ld=@var{pathname}
Same as
@option{--with-as}, but for the linker.
On MIPS based systems and on Alphas, you must specify whether you want
GCC to create the normal ECOFF debugging format, or to use BSD-style
stabs passed through the ECOFF symbol table. The normal ECOFF debug
-format cannot fully handle languages other than C. BSD stabs format can
-handle other languages, but it only works with the GNU debugger GDB.
+format cannot fully handle languages other than C@. BSD stabs format can
+handle other languages, but it only works with the GNU debugger GDB@.
Normally, GCC uses the ECOFF debugging format by default; if you
-prefer BSD stabs, specify @option{--with-stabs} when you configure GCC.
+prefer BSD stabs, specify @option{--with-stabs} when you configure GCC@.
No matter which default you choose when you configure GCC, the user
can use the @option{-gcoff} and @option{-gstabs+} options to specify explicitly
workable alternative. This requires gas and gdb, as the normal SVR4
tools can not generate or interpret stabs.
-@item --enable-multilib
+@item --disable-multilib
Specify that multiple target
-libraries should be built to support different target variants, calling
-conventions, etc. This is the default.
+libraries to support different target variants, calling
+conventions, etc should not be built. The default is to build a
+predefined set of them.
+
+Some targets provide finer-grained control over which multilibs are built
+(e.g., @option{--disable-softfloat}):
+@table @code
+
+@item arc-*-elf*
+biendian.
+
+@item arm-*-*
+fpu, 26bit, underscore, interwork, biendian, nofmult.
+
+@item m68*-*-*
+softfloat, m68881, m68000, m68020.
+
+@item mips*-*-*
+single-float, biendian, softfloat.
+
+@item powerpc*-*-*, rs6000*-*-*
+aix64, pthread, softfloat, powercpu, powerpccpu, powerpcos, biendian,
+sysv, aix.
+
+@end table
@item --enable-threads
Specify that the target
@item dce
DCE thread support.
@item mach
-Generic MACH thread support, known to work on NEXTSTEP. (Please note
+Generic MACH thread support, known to work on NeXTSTEP@. (Please note
that the file needed to support this configuration, @file{gthr-mach.h}, is
missing and thus this setting will cause a known bootstrap failure.)
@item no
@item single
Disable thread support, should work for all platforms.
@item solaris
-SUN Solaris thread support.
+Sun Solaris 2 thread support.
@item vxworks
VxWorks thread support.
@item win32
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
-SPARC. If configure does not recognize the model name (e.g. arm700,
+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.
+@item --enable-altivec
+Specify that the target supports AltiVec vector enhancements. This
+option will adjust the ABI for AltiVec enhancements, as well as generate
+AltiVec code when appropriate. This option is only available for
+PowerPC systems.
+
@item --enable-target-optspace
Specify that target
libraries should be optimized for code space instead of code speed.
@item --enable-maintainer-mode
The build rules that
regenerate the GCC master message catalog @file{gcc.pot} are normally
-disabled. This is because it can only be rebuilt if the complete source
-tree is present. If you have changed the sources and want to rebuild the
+disabled. This is because it can only be rebuilt if the complete source
+tree is present. If you have changed the sources and want to rebuild the
catalog, configuring with @option{--enable-maintainer-mode} will enable
-this. Note that you need a recent version of the @code{gettext} tools
+this. Note that you need a recent version of the @code{gettext} tools
to do so.
@item --enable-version-specific-runtime-libs
Specify
that runtime libraries should be installed in the compiler specific
subdirectory (@file{@var{libsubdir}}) rather than the usual places. In
-addition, libstdc++'s include files will be installed in
+addition, @samp{libstdc++}'s include files will be installed in
@file{@var{libsubdir}/include/g++} unless you overruled it by using
@option{--with-gxx-include-dir=@var{dirname}}. Using this option is
particularly useful if you intend to use several versions of GCC in
parallel. This is currently supported by @samp{libf2c} and
-@samp{libstdc++}.
+@samp{libstdc++}, and is the default for @samp{libobjc} which cannot be
+changed in this case.
@item --enable-languages=@var{lang1},@var{lang2},@dots{}
Specify that only a particular subset of compilers and
-their runtime libraries should be built. For a list of valid values for
+their runtime libraries should be built. For a list of valid values for
@var{langN} you can issue the following command in the
-@file{gcc} directory of your GCC source tree:@* @samp{grep language=
-*/config-lang.in}@* Currently, you can use any of the following:
-@code{c}, @code{c++}, @code{f77}, @code{java} and @code{objc}.
-@code{CHILL} is not currently maintained, and will almost
-certainly fail to compile. Note that this switch does not work with
-EGCS 1.1.2 or older versions of egcs. It is supported in GCC 2.95
-and newer versions.@*
+@file{gcc} directory of your GCC source tree:@*
+@example
+grep language= */config-lang.in
+@end example
+Currently, you can use any of the following:
+@code{ada}, @code{c}, @code{c++}, @code{f77}, @code{java}, @code{objc}.
+Building the Ada compiler has special requirements, see below.@*
If you do not pass this flag, all languages available in the @file{gcc}
sub-tree will be configured. Re-defining @code{LANGUAGES} when calling
@samp{make bootstrap} @strong{does not} work anymore, as those
separately, or it just happens not to build on your particular
machine. In general, if the Java front end is enabled, the GCJ
libraries will be enabled too, unless they're known to not work on
-the target platform. If GCJ is enabled but libgcj isn't built, you
+the target platform. If GCJ is enabled but @samp{libgcj} isn't built, you
may need to port it; in this case, before modifying the top-level
-@file{configure.in} so that libgcj is enabled by default on this platform,
+@file{configure.in} so that @samp{libgcj} is enabled by default on this platform,
you may use @option{--enable-libgcj} to override the default.
@item --with-dwarf2
Specify that the compiler should
-use DWARF2 debugging information as the default.
+use DWARF 2 debugging information as the default.
@item --enable-win32-registry
-@itemx --enable-win32-registry=@var{KEY}
+@itemx --enable-win32-registry=@var{key}
@itemx --disable-win32-registry
The @option{--enable-win32-registry} option enables Windows-hosted GCC
to look up installations paths in the registry using the following key:
@smallexample
-@code{HKEY_LOCAL_MACHINE\SOFTWARE\Free Software Foundation\@var{KEY}}
+@code{HKEY_LOCAL_MACHINE\SOFTWARE\Free Software Foundation\@var{key}}
@end smallexample
-@var{KEY} defaults to GCC version number, and can be overridden by the
-@option{--enable-win32-registry=@var{KEY}} option. Vendors and distributors
+@var{key} defaults to GCC version number, and can be overridden by the
+@option{--enable-win32-registry=@var{key}} option. Vendors and distributors
who use custom installers are encouraged to provide a different key,
perhaps one comprised of vendor name and GCC version number, to
-avoid conflict with existing installations. This feature is enabled
+avoid conflict with existing installations. This feature is enabled
by default, and can be disabled by @option{--disable-win32-registry}
option. This option has no effect on the other hosts.
internal consistency checks. This does not change the generated code,
but adds error checking within the compiler. This will slow down the
compiler and may only work properly if you are building the compiler
-with GNU C. This is on by default when building from CVS or snapshots,
+with GCC@. This is on by default when building from CVS or snapshots,
but off for releases. More control over the checks may be had by
specifying @var{list}; the categories of checks available are
@samp{misc}, @samp{tree}, @samp{gc}, @samp{rtl} and @samp{gcac}. The
@itemx --disable-nls
The @option{--enable-nls} option enables Native Language Support (NLS),
which lets GCC output diagnostics in languages other than American
-English. Native Language Support is enabled by default if not doing a
-canadian cross build. The @option{--disable-nls} option disables NLS.
+English. Native Language Support is enabled by default if not doing a
+canadian cross build. The @option{--disable-nls} option disables NLS@.
@item --with-included-gettext
If NLS is enabled, the @option{--with-included-gettext} option causes the build
-procedure to prefer its copy of GNU @code{gettext}.
+procedure to prefer its copy of GNU @command{gettext}.
@item --with-catgets
If NLS is enabled, and if the host lacks @code{gettext} but has the
ignores @code{catgets} and instead uses GCC's copy of the GNU
@code{gettext} library. The @option{--with-catgets} option causes the
build procedure to use the host's @code{catgets} in this situation.
+
+@item --with-libiconv-prefix=@var{dir}
+Search for libiconv header files in @file{@var{dir}/include} and
+libiconv library files in @file{@var{dir}/lib}.
+
+@item --with-system-zlib
+Use installed zlib rather than that included with GCC@. This option
+only applies if the Java front end is being built.
+
+@item --enable-obsolete
+Enable configuration for an obsoleted system. If you attempt to
+configure GCC for a system (build, host, or target) which has been
+obsoleted, and you do not specify this flag, configure will halt with an
+error message.
+
+All support for systems which have been obsoleted in one release of GCC
+is removed entirely in the next major release, unless someone steps
+forward to maintain the port.
@end table
Some options which only apply to building cross compilers:
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
-@command{gcc}.
+GCC.
@item --with-libs=``@var{dir1} @var{dir2} @dots{} @var{dirN}''
Specifies a list of directories which contain the target runtime
libraries. These libraries will be copied into the @file{gcc} install
directory.
@item --with-newlib
-Specifies that ``newlib'' is
+Specifies that @samp{newlib} is
being used as the target C library. This causes @code{__eprintf} to be
-omitted from libgcc.a on the assumption that it will be provided by
-newlib.
+omitted from @file{libgcc.a} on the assumption that it will be provided by
+@samp{newlib}.
@end table
-
+
Note that each @option{--enable} option has a corresponding
@option{--disable} option and that each @option{--with} option has a
corresponding @option{--without} option.
Now that GCC is configured, you are ready to build the compiler and
runtime libraries.
-We @strong{highly} recommend that GCC be built using GNU make;
+We @strong{highly} recommend that GCC be built using GNU make;
other versions may work, then again they might not.
+GNU make is required for compiling GNAT (the Ada compiler) and the Java
+runtime library.
(For example, many broken versions of make will fail if you use the
recommended setup where @var{objdir} is different from @var{srcdir}.
installing the compiler.)
Some commands executed when making the compiler may fail (return a
-non-zero status) and be ignored by @code{make}. These failures, which
+nonzero status) and be ignored by @code{make}. These failures, which
are often due to files that were not found, are expected, and can safely
be ignored.
@file{sys/types.h}. If you find that @code{size_t} is a signed type and
that type mismatches occur, this could be the cause.
-The solution is not to use such a directory for building GCC.
+The solution is not to use such a directory for building GCC@.
When building from CVS or snapshots, or if you modify parser sources,
you need the Bison parser generator installed. Any version 1.25 or
not need Bison installed to build them.
When building from CVS or snapshots, or if you modify Texinfo
-documentation, you need version 4.0 or later of Texinfo installed if you
+documentation, you need version 4.1 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.
@section Building a native compiler
-For a native build issue the command @samp{make bootstrap}. This
+For a native build issue the command @samp{make bootstrap}. This
will build the entire GCC system, which includes the following steps:
@itemize @bullet
@item
Build target tools for use by the compiler such as binutils (bfd,
-binutils, gas, gprof, ld, and opcodes)@*
-if they have been individually linked
+binutils, gas, gprof, ld, and opcodes)
+if they have been individually linked
or moved into the top level GCC source tree before configuring.
@item
@item
Build runtime libraries using the stage3 compiler from the previous step.
-
+
@end itemize
If you are short on disk space you might consider @samp{make
roughly 40% of disk space both for the bootstrap and the final installation.
(Libraries will still contain debugging information.)
-If you wish to use non-default flags when compiling the stage2 and
-stage3 compile, set @code{BOOT_CFLAGS} on the command line when doing
+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
tested here than the default of @samp{-g -O2}, but should still work.
In a few cases, you may find that you need to specify special flags such
If you used the flag @option{--enable-languages=@dots{}} to restrict
the compilers to be built, only those you've actually enabled will be
-built. This will of course only build those runtime libraries, for
+built. This will of course only build those runtime libraries, for
which the particular compiler has been built. Please note,
-that re-defining LANGUAGES when calling @samp{make bootstrap}
+that re-defining @env{LANGUAGES} when calling @samp{make bootstrap}
@strong{does not} work anymore!
If the comparison of stage2 and stage3 fails, this normally indicates
-that the stage 2 compiler has compiled GCC incorrectly, and is therefore
+that the stage2 compiler has compiled GCC incorrectly, and is therefore
a potentially serious bug which you should investigate and report. (On
a few systems, meaningful comparison of object files is impossible; they
always appear ``different''. If you encounter this problem, you will
When building a cross compiler, it is not generally possible to do a
3-stage bootstrap of the compiler. This makes for an interesting problem
-as parts of GCC can only be built with GCC.
+as parts of GCC can only be built with GCC@.
To build a cross compiler, we first recommend building and installing a
native compiler. You can then use the native GCC compiler to build the
-cross compiler.
+cross compiler. The installed native compiler needs to be GCC version
+2.95 or later.
Assuming you have already installed a native copy of GCC and configured
your cross compiler, issue the command @command{make}, which performs the
If you have a multiprocessor system you can use @samp{make bootstrap
MAKE="make -j 2" -j 2} or just @samp{make -j 2 bootstrap}
for GNU Make 3.79 and above instead of just @samp{make bootstrap}
-when building GCC. You can use a bigger number instead of two if
+when building GCC@. You can use a bigger number instead of two if
you like. In most cases, it won't help to use a number bigger than
the number of processors in your machine.
+@section Building the Ada compiler
+
+In order to build GNAT, the Ada compiler, you need a working GNAT
+compiler, since the Ada front end is written in Ada (with some
+GNAT-specific extensions), and GNU make.
+
+However, you do not need a full installation of GNAT, just the GNAT
+binary @file{gnat1}, a copy of @file{gnatbind}, and a compiler driver
+which can deal with Ada input (by invoking the @file{gnat1} binary).
+You can specify this compiler driver by setting the @env{ADAC}
+environment variable at the configure step. @command{configure} can
+detect the driver automatically if it has got a common name such as
+@command{gcc} or @command{gnatgcc}. Of course, you still need a working
+C compiler (the compiler driver can be different or not).
+
+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,
+you have to issue the following commands before invoking @samp{make
+boostrap} (this assumes that you start with an unmodified and consistent
+source distribution):
+
+@example
+ cd @var{srcdir}/gcc/ada
+ touch treeprs.ads [es]info.h nmake.ad[bs]
+@end example
+
+At the moment, the GNAT library and several tools for GNAT are not built
+by @samp{make bootstrap}. You have to invoke
+@samp{make gnatlib_and_tools} in the @file{@var{objdir}/gcc}
+subdirectory before proceeding with the next steps.
+
+For example, you can build a native Ada compiler by issuing the
+following commands (assuming @command{make} is GNU make):
+
+@example
+ cd @var{objdir}
+ @var{srcdir}/configure --enable-languages=c,ada
+ cd @var{srcdir}/gcc/ada
+ touch treeprs.ads [es]info.h nmake.ad[bs]
+ cd @var{objdir}
+ make bootstrap
+ cd gcc
+ make gnatlib_and_tools
+ cd ..
+@end example
+
+Currently, when compiling the Ada front end, you cannot use the parallel
+build feature described in the previous section.
+
@html
<hr>
<p>
@cindex Installing GCC: Testing
@cindex Testsuite
-@strong{Please note that this is only applicable
-to current development versions of GCC and GCC 3.0 or later.
-GCC 2.95.x does not come with a testsuite.}
-
-Before you install GCC, you might wish to run the testsuite. This
-step is optional and may require you to download additional software.
-
-First, you must have @uref{download.html,,downloaded the testsuites}.
-The full distribution contains testsuites; only if you downloaded the
-``core'' compiler plus any front ends, you do not have the testsuites.
-
-Second, you must have a @uref{http://www.gnu.org/software/dejagnu/,,current version of DejaGnu} installed;
+Before you install GCC, we encourage you to run the testsuites and to
+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}.
+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.
+
+First, you must have @uref{download.html,,downloaded the testsuites}.
+These are part of the full distribution, but if you downloaded the
+``core'' compiler plus any front ends, you must download the testsuites
+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
-@item
-In order to run the libio tests in GCC 2.95 and earlier versions of GCC
-on targets which do not fully
-support Unix/POSIX commands (e.g. Cygwin), the references to the @file{dbz}
-directory have to be deleted from @file{libio/configure.in}.
@item
The following environment variables may need to be set appropriately, as in
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 gcc subdirectory of the object directory. To further cut down the
+in the @file{gcc} subdirectory of the object directory. To further cut down the
tests the following is possible:
@example
make check-gcc RUNTESTFLAGS="execute.exp @var{other-options}"
@end example
-This will run all gcc execute tests in the testsuite.
+This will run all @command{gcc} execute tests in the testsuite.
@example
make check-g++ RUNTESTFLAGS="old-deja.exp=9805* @var{other-options}"
@end example
-This will run the g++ ``old-deja'' tests in the testsuite where the filename
+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
@section How to interpret test results
After the testsuite has run you'll find various @file{*.sum} and @file{*.log}
-files in the testsuite subdirectories. The @file{*.log} files contain a
+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
+results, the @file{*.sum} files summarize the results. These summaries list
all the tests that have been run with a corresponding status code:
@itemize @bullet
@section Submitting test results
If you want to report the results to the GCC project, use the
-@file{contrib/test_summary} shell script. Start it in the @var{objdir} with
+@file{contrib/test_summary} shell script. Start it in the @var{objdir} with
@example
@var{srcdir}/contrib/test_summary -p your_commentary.txt \
@end example
This script uses the @command{Mail} program to send the results, so
-make sure it is in your @env{PATH}. The file @file{your_commentary.txt} is
+make sure it is in your @env{PATH}. The file @file{your_commentary.txt} is
prepended to the testsuite summary and should contain any special
-remarks you have on your results or your build environment. Please
+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
+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
+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.
+@html
+<hr>
+<p>
+@end html
+@ifhtml
+@uref{./index.html,,Return to the GCC Installation page}
+@end ifhtml
@end ifset
@c ***Final install***********************************************************
@chapter Installing GCC: Final installation
@end ifnothtml
-Now that GCC has been built and tested, you can install it with
-@samp{cd @var{objdir}; make install}.
+Now that GCC has been built (and optionally tested), you can install it with
+@example
+cd @var{objdir}; make install
+@end example
That step completes the installation of GCC; user level binaries can
be found in @file{@var{prefix}/bin} where @var{prefix} is the value you
parts of the compiler in @file{@var{libdir}/gcc-lib}; documentation in
info format in @file{@var{infodir}} (normally @file{@var{prefix}/info}).
-If you don't mind, please quickly review the
-@uref{http://gcc.gnu.org/gcc-3.0/buildstat.html,,build status page}.
-If your system is not listed, send a note to
-@uref{mailto:gcc@@gcc.gnu.org,,gcc@@gcc.gnu.org} indicating
+If you built a released version of GCC using @samp{make bootstrap} then please
+quickly review the build status page for
+@uref{http://gcc.gnu.org/gcc-3.1/buildstat.html,,3.1},
+@uref{http://gcc.gnu.org/gcc-3.0/buildstat.html,,3.0}, or
+@uref{http://gcc.gnu.org/gcc-2.95/buildstat.html,,2.95}.
+If your system is not listed for the version of GCC that you built,
+send a note to
+@email{gcc@@gcc.gnu.org} indicating
that you successfully built and installed GCC.
+Include the following information:
+
+@itemize @bullet
+@item
+Output from running @file{@var{srcdir}/config.guess}. Do not send us
+that file itself, just the one-line output from running it.
-Include the output from running @file{@var{srcdir}/config.guess}. (Do
-not send us the config.guess file itself, just the one-line output from
-running it!)
+@item
+The output of @samp{gcc -v} for your newly installed gcc.
+This tells us which version of GCC you built and the options you passed to
+configure.
+
+@item
+Whether you enabled all languages or a subset of them. If you used a
+full distribution then this information is part of the configure
+options in the output of @samp{gcc -v}, but if you downloaded the
+``core'' compiler plus additional front ends then it isn't apparent
+which ones you built unless you tell us about it.
+
+@item
+If the build was for GNU/Linux, also include:
+@itemize @bullet
+@item
+The distribution name and version (e.g., Red Hat 7.1 or Debian 2.2.3);
+this information should be available from @file{/etc/issue}.
+
+@item
+The version of the Linux kernel, available from @samp{uname --version}
+or @samp{uname -a}.
+
+@item
+The version of glibc you used; for RPM-based systems like Red Hat,
+Mandrake, and SuSE type @samp{rpm -q glibc} to get the glibc version,
+and on systems like Debian and Progeny use @samp{dpkg -l libc6}.
+@end itemize
+For other systems, you can include similar information if you think it is
+relevant.
+
+@item
+Any other information that you think would be useful to people building
+GCC on the same configuration. The new entry in the build status list
+will include a link to the archived copy of your message.
+@end itemize
+
+We'd also like to know if the
+@ifnothtml
+@ref{Specific, host/target specific installation notes}
+@end ifnothtml
+@ifhtml
+@uref{specific.html,,host/target specific installation notes}
+@end ifhtml
+didn't include your host/target information or if that information is
+incomplete or out of date. Send a note to
+@email{gcc@@gcc.gnu.org} telling us how the information should be changed.
If you find a bug, please report it following our
@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 4.0)
+dvi}. You will need to have @command{texi2dvi} (version at least 4.1)
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
@uref{http://www.gnu.org/order/order.html,,buy printed manuals from the
Free Software Foundation}, though such manuals may not be for the most
-recent version of GCC.
+recent version of GCC@.
@html
<hr>
@cindex Binaries
@cindex Installing GCC: Binaries
-We are often asked about pre-compiled versions of GCC. While we cannot
+We are often asked about pre-compiled versions of GCC@. While we cannot
provide these for all platforms, below you'll find links to binaries for
various platforms where creating them by yourself is not easy due to various
reasons.
AIX:
@itemize
@item
-@uref{http://www-frec.bull.com/docs/download.htm,,Bull's Freeware and
-Shareware Archive for AIX};
+@uref{http://freeware.bull.net,,Bull's Freeware and Shareware Archive for AIX};
@item
-@uref{http://aixpdlib.seas.ucla.edu,,UCLA Software Library for AIX};
+@uref{http://aixpdslib.seas.ucla.edu,,UCLA Software Library for AIX};
@end itemize
@item
DOS---@uref{http://www.delorie.com/djgpp/,,DJGPP};
@item
+HP-UX:
+@itemize
+@item
@uref{http://hpux.cae.wisc.edu/,,HP-UX Porting Center};
@item
+@uref{ftp://sunsite.informatik.rwth-aachen.de/pub/packages/gcc_hpux/,,Binaries for HP-UX 11.00 at Aachen University of Technology}.
+@end itemize
+
+@item
@uref{http://www.sco.com/skunkware/devtools/index.html#gcc,,SCO
OpenServer/Unixware};
@item
-Solaris (SPARC, Intel)---@uref{http://www.sunfreeware.com/,,Sunfreeware};
+Solaris 2 (SPARC, Intel)---@uref{http://www.sunfreeware.com/,,Sunfreeware};
@item
SGI---@uref{http://freeware.sgi.com/,,SGI Freeware};
@end itemize
@item
-@uref{ftp://ftp.thewrittenword.com/packages/free/by-name/gcc-2.95.2/,,The
+@uref{ftp://ftp.thewrittenword.com/packages/free/by-name/,,The
Written Word} offers binaries for Solaris 2.5.1, 2.6, 2.7/SPARC, 2.7/Intel,
IRIX 6.2, 6.5, Digital UNIX 4.0D, HP-UX 10.20, and HP-UX 11.00.
In addition to those specific offerings, you can get a binary
distribution CD-ROM from the
-@uref{http://www.fsf.org/order/order.html,,Free Software Foundation}.
+@uref{http://www.fsf.org/order/order.html,,Free Software Foundation}.
It contains binaries for a number of platforms, and
-includes not only GCC, but other stuff as well. The current CD does
+includes not only GCC, but other stuff as well. The current CD does
not contain the latest version of GCC, but it should allow
-bootstrapping the compiler. An updated version of that disk is in the
+bootstrapping the compiler. An updated version of that disk is in the
works.
@html
@c ***Specific****************************************************************
@ifnothtml
@comment node-name, next, previous, up
-@node Specific, Concept Index, Binaries, Top
+@node Specific, Old, Binaries, Top
@end ifnothtml
@ifset specifichtml
@html
Please read this document carefully @emph{before} installing the
GNU Compiler Collection on your machine.
+Lists of successful builds for released versions of GCC are
+available at our web pages for
+@uref{http://gcc.gnu.org/gcc-3.0/buildstat.html,,3.0}
+and
+@uref{http://gcc.gnu.org/gcc-2.95/buildstat.html,,2.95}.
+These lists are updated as new information becomes available.
+
@ifhtml
@itemize
@item
@item
@uref{#alpha*-dec-osf*,,alpha*-dec-osf*}
@item
+@uref{#alphaev5-cray-unicosmk*,,alphaev5-cray-unicosmk*}
+@item
@uref{#arc-*-elf,,arc-*-elf}
@item
@uref{#arm-*-aout,,arm-*-aout}
@item
@uref{#c4x,,c4x}
@item
-@uref{#decstation-*,,decstation-*}
-@item
@uref{#dos,,DOS}
@item
@uref{#dsp16xx,,dsp16xx}
@item
@uref{#elxsi-elxsi-bsd,,elxsi-elxsi-bsd}
@item
+@uref{#*-*-freebsd*,,*-*-freebsd*}
+@item
@uref{#h8300-hms,,h8300-hms}
@item
@uref{#hppa*-hp-hpux*,,hppa*-hp-hpux*}
@item
@uref{#hppa*-hp-hpux11,,hppa*-hp-hpux11}
@item
-@uref{#*-*-freebsd*,,*-*-freebsd*}
-@item
@uref{#i370-*-*,,i370-*-*}
@item
@uref{#*-*-linux-gnu,,*-*-linux-gnu}
@item
@uref{#ix86-sequent-bsd,,i?86-sequent-bsd}
@item
-@uref{#ix86-sequent-ptx1*,,i?86-sequent-ptx1*, i?86-sequent-ptx2*}
-@item
-@uref{#ix86-*-sysv3*,,i?86-*-sysv3*}
+@uref{#ix86-sequent-ptx1*,,i?86-sequent-ptx1*, i?86-sequent-ptx2*, i?86-sequent-sysv3*}
@item
@uref{#i860-intel-osf*,,i860-intel-osf*}
@item
+@uref{#ia64-*-linux,,ia64-*-linux}
+@item
@uref{#*-lynx-lynxos,,*-lynx-lynxos}
@item
@uref{#*-ibm-aix*,,*-ibm-aix*}
@item
@uref{#m68k-bull-sysv,,m68k-bull-sysv}
@item
-@uref{#m68k-crds-unox,,m68k-crds-unox}
+@uref{#m68k-crds-unos,,m68k-crds-unos}
@item
@uref{#m68k-hp-hpux,,m68k-hp-hpux}
@item
@item
@uref{#mips-*-*,,mips-*-*}
@item
+@uref{#mips-dec-*,,mips-dec-*}
+@item
@uref{#mips-mips-bsd,,mips-mips-bsd}
@item
@uref{#mips-mips-riscos*,,mips-mips-riscos*}
@item
-@uref{#mips*-sgi-irix[45],,mips*-sgi-irix[45]}
+@uref{#mips-sgi-irix4,,mips-sgi-irix4}
@item
-@uref{#mips*-sgi-irix6,,mips*-sgi-irix6}
+@uref{#mips-sgi-irix5,,mips-sgi-irix5}
+@item
+@uref{#mips-sgi-irix6,,mips-sgi-irix6}
@item
@uref{#mips-sony-sysv,,mips-sony-sysv}
@item
@item
@uref{#ns32k-utek,,ns32k-utek}
@item
+@uref{#powerpc*-*-*,,powerpc*-*-*, powerpc-*-sysv4}
+@item
+@uref{#powerpc-*-darwin*,,powerpc-*-darwin*}
+@item
@uref{#powerpc-*-elf,,powerpc-*-elf, powerpc-*-sysv4}
@item
@uref{#powerpc-*-linux-gnu*,,powerpc-*-linux-gnu*}
@item
+@uref{#powerpc-*-netbsd*,,powerpc-*-netbsd*}
+@item
@uref{#powerpc-*-eabiaix,,powerpc-*-eabiaix}
@item
@uref{#powerpc-*-eabisim,,powerpc-*-eabisim}
@item
@uref{#romp-*-aos,,romp-*-aos, romp-*-mach}
@item
-@uref{#*-*-solaris*,,*-*-solaris*}
+@uref{#s390-*-linux*}
@item
-@uref{#sparc-sun-*,,sparc-sun-*}
+@uref{#s390x-*-linux*}
@item
-@uref{#sparc-sun-solaris*,,sparc-sun-solaris*}
+@uref{#*-*-solaris2*,,*-*-solaris2*}
@item
-@uref{#sparc-sun-solaris2.7,,sparc-sun-solaris2.7}
+@uref{#sparc-sun-solaris2*,,sparc-sun-solaris2*}
@item
-@uref{#*-sun-solaris2.8,,*-sun-solaris2.8}
+@uref{#sparc-sun-solaris2.7,,sparc-sun-solaris2.7}
@item
-@uref{#sunv5,,Sun V5.0 Compiler Bugs}
+@uref{#*-*-solaris2.8,,*-*-solaris2.8}
@item
-@uref{#sparc-sun-sunos*,,sparc-sun-sunos*}
+@uref{#sparc-sun-sunos4*,,sparc-sun-sunos4*}
@item
@uref{#sparc-unknown-linux-gnulibc1,,sparc-unknown-linux-gnulibc1}
@item
+@uref{#sparc-*-linux*,,sparc-*-linux*}
+@item
@uref{#sparc64-*-*,,sparc64-*-*}
@item
+@uref{#sparcv9-*-solaris2*,,sparcv9-*-solaris2*}
+@item
@uref{#*-*-sysv*,,*-*-sysv*}
@item
@uref{#vax-dec-ultrix,,vax-dec-ultrix}
@item
@uref{#we32k-*-*,,we32k-*-*}
@item
+@uref{#xtensa-*-elf,,xtensa-*-elf}
+@item
+@uref{#xtensa-*-linux*,,xtensa-*-linux*}
+@item
@uref{#windows,,Microsoft Windows}
@item
@uref{#os2,,OS/2}
@itemize
@item
-@uref{#elf_targets,,all ELF targets} (SVR4, Solaris, etc.)
+@uref{#elf_targets,,all ELF targets} (SVR4, Solaris 2, etc.)
@end itemize
@end ifhtml
<hr>
@end html
@heading @anchor{1750a-*-*}1750a-*-*
-MIL-STD-1750A processors.
+MIL-STD-1750A processors. This target is obsoleted in GCC 3.1.
The MIL-STD-1750A cross configuration produces output for
-@code{as1750}, an assembler/linker available under the GNU Public
-License for the 1750A. @code{as1750} can be obtained at
+@code{as1750}, an assembler/linker available under the GNU General Public
+License for the 1750A@. @code{as1750} can be obtained at
@uref{ftp://ftp.fta-berlin.de/pub/crossgcc/1750gals/}.
A similarly licensed simulator for
the 1750A is available from same address.
-You should ignore a fatal error during the building of libgcc (libgcc is
-not yet implemented for the 1750A.)
+You should ignore a fatal error during the building of @samp{libgcc}
+(@samp{libgcc} is not yet implemented for the 1750A@.)
The @code{as1750} assembler requires the file @file{ms1750.inc}, which is
-found in the directory @file{config/1750a}.
+found in the directory @file{gcc/config/1750a}.
-GNU CC produced the same sections as the Fairchild F9450 C Compiler,
+GCC produced the same sections as the Fairchild F9450 C Compiler,
namely:
@table @code
The read-only (ROM) constants section.
@item Init
-Initialization section (code to copy KREL to SREL).
+Initialization section (code to copy KREL to SREL)@.
@end table
-The smallest addressable unit is 16 bits (BITS_PER_UNIT is 16). This
+The smallest addressable unit is 16 bits (@code{BITS_PER_UNIT} is 16). This
means that type @code{char} is represented with a 16-bit word per character.
The 1750A's ``Load/Store Upper/Lower Byte'' instructions are not used by
-GNU CC.
+GCC@.
@html
</p>
@end html
@heading @anchor{a29k}a29k
AMD Am29k-family processors. These are normally used in embedded
-applications. There are no standard Unix configurations.
-This configuration
-corresponds to AMD's standard calling sequence and binary interface
-and is compatible with other 29k tools.
+applications. This configuration corresponds to AMD's standard calling
+sequence and binary interface and is compatible with other 29k tools.
+
+AMD has abandoned this processor, and most variants are obsoleted in GCC
+3.1. We are preserving the a29k-*-udi and a29k-*-coff configurations
+for one more release.
You may need to make a variant of the file @file{a29k.h} for your
particular configuration.
This section contains general configuration information for all
alpha-based platforms using ELF (in particular, ignore this section for
-DEC OSF/1, Digital UNIX and Tru64 UNIX). In addition to reading this
+DEC OSF/1, Digital UNIX and Tru64 UNIX)@. In addition to reading this
section, please read all other sections that match your target.
-We require binutils 2.11.1 (as of yet unreleased), binutils with
-@samp{binutils-2_11-branch} tag after May 31, 2001 (as taken below), or newer.
-Previous binutils releases had a number of problems with DWARF2
+We require binutils 2.11.2 or newer.
+Previous binutils releases had a number of problems with DWARF 2
debugging information, not the least of which is incorrect linking of
shared libraries.
-Until binutils 2.11.1 is released, these sample commands may be useful:
-
-@smallexample
-mkdir binutils-2.11.X; cd binutils-2.11.X
-cvs -d :pserver:anoncvs@@anoncvs.cygnus.com:/cvs/src \
- co -rbinutils-2_11-branch -P binutils
-mkdir obj; cd obj
-../src/configure --prefix=@emph{an-absolute-path}
-make all check install
-@end smallexample
-
-When configuring gcc, provide explicit @option{--with-gnu-as}
-@option{--with-as=@emph{an-absolute-path/bin/as}} and
-@option{--with-gnu-ld} @option{--with-ld=@emph{an-absolute-path/bin/ld}}
-options to point into the prefix used above.
-
@html
</p>
<hr>
are running the DEC/Compaq Unix (DEC OSF/1, Digital UNIX, or Compaq
Tru64 UNIX) operating system, for example the DEC Alpha AXP systems.
+Support for versions before @code{alpha*-dec-osf4} is obsoleted in GCC
+3.1. (These are the versions which identify themselves as DEC OSF/1.)
+
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
Compaq C Compiler:
@example
- % CC=cc @var{srcdir}/configure [@var{target}] [@var{options}]
+ % CC=cc @var{srcdir}/configure [@var{options}] [@var{target}]
@end example
or you can use a copy of GCC 2.95.3 or higher built on Tru64 UNIX V4.0:
@example
- % CC=gcc -Wa,-oldas @var{srcdir}/configure [@var{target}] [@var{options}]
+ % CC=gcc -Wa,-oldas @var{srcdir}/configure [@var{options}] [@var{target}]
@end example
-GNU CC writes a @samp{.verstamp} directive to the assembler output file
+As of GNU binutils 2.11.2, neither GNU @command{as} nor GNU @command{ld}
+are supported on Tru64 UNIX, so you must not configure GCC with
+@option{--with-gnu-as} or @option{--with-gnu-ld}.
+
+The @option{--enable-threads} options isn't supported yet. A patch is
+in preparation for a future release.
+
+GCC writes a @samp{.verstamp} directive to the assembler output file
unless it is built as a cross-compiler. It gets the version to use from
the system header file @file{/usr/include/stamp.h}. If you install a
new version of DEC Unix, you should rebuild GCC to pick up the new version
@option{-save-temps}, you will have to manually delete the @samp{.i} and
@samp{.s} files after each series of compilations.
-GNU CC now supports both the native (ECOFF) debugging format used by DBX
-and GDB and an encapsulated STABS format for use only with GDB. See the
+GCC now supports both the native (ECOFF) debugging format used by DBX
+and GDB and an encapsulated STABS format for use only with GDB@. See the
discussion of the @option{--with-stabs} option of @file{configure} above
for more information on these formats and how to select them.
There is a bug in DEC's assembler that produces incorrect line numbers
for ECOFF format when the @samp{.align} directive is used. To work
-around this problem, GNU CC will not emit such alignment directives
+around this problem, GCC will not emit such alignment directives
while writing ECOFF format debugging information even if optimization is
being performed. Unfortunately, this has the very undesirable
side-effect that code addresses when @option{-O} is specified are
different depending on whether or not @option{-g} is also specified.
To avoid this behavior, specify @option{-gstabs+} and use GDB instead of
-DBX. DEC is now aware of this problem with the assembler and hopes to
+DBX@. DEC is now aware of this problem with the assembler and hopes to
provide a fix shortly.
@html
</p>
<hr>
@end html
+@heading @anchor{alphaev5-cray-unicosmk*}alphaev5-cray-unicosmk*
+Cray T3E systems running Unicos/Mk.
+
+This port is incomplete and has many known bugs. We hope to improve the
+support for this target soon. Currently, only the C front end is supported,
+and it is not possible to build parallel applications. Cray modules are not
+supported; in particular, Craylibs are assumed to be in
+@file{/opt/ctl/craylibs/craylibs}.
+
+You absolutely @strong{must} use GNU make on this platform. Also, you
+need to tell GCC where to find the assembler and the linker. The
+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}
+
+The comparison test during @samp{make bootstrap} fails on Unicos/Mk
+because the assembler inserts timestamps into object files. You should
+be able to work around this by doing @samp{make all} after getting this
+failure.
+
+@html
+</p>
+<hr>
+@end html
@heading @anchor{arc-*-elf}arc-*-elf
Argonaut ARC processor.
This configuration is intended for embedded systems.
@end html
@heading @anchor{arm-*-riscix}arm-*-riscix
The ARM2 or ARM3 processor running RISC iX, Acorn's port of BSD Unix.
+This configuration is obsoleted in GCC 3.1.
+
If you are running a version of RISC iX prior to 1.2 then you must
specify the version number during configuration. Note that the
assembler shipped with RISC iX does not support stabs debugging
@heading @anchor{avr}avr
ATMEL AVR-family micro controllers. These are used in embedded
-applications. There are no standard Unix configurations. @xref{AVR
-Options,, AVR Options, gcc, Using and Porting the GNU Compiler
-Collection (GCC)}, for the list of supported MCU types.
+applications. There are no standard Unix configurations.
+@ifnothtml
+@xref{AVR Options,, AVR Options, gcc, Using and Porting the GNU Compiler
+Collection (GCC)},
+@end ifnothtml
+@ifhtml
+See ``AVR Options'' in the main manual
+@end ifhtml
+for the list of supported MCU types.
-Use @samp{configure --target=avr --enable-languages="c"} to configure GCC.
+Use @samp{configure --target=avr --enable-languages="c"} to configure GCC@.
Further installation notes and other useful information about AVR tools
can also be obtained from:
@item
@uref{http://home.overta.ru/users/denisc,,http://home.overta.ru/users/denisc}
@item
-@uref{http://www.itnet.pl/amelektr/avr,,http://www.itnet.pl/amelektr/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.
Texas Instruments TMS320C3x and TMS320C4x Floating Point Digital Signal
Processors. These are used in embedded applications. There are no
-standard Unix configurations. @xref{C4x Options,, C4x Options, gcc,
-Using and Porting the GNU Compiler Collection (GCC)}, for the list of
-supported MCU types.
+standard Unix configurations.
+@ifnothtml
+@xref{TMS320C3x/C4x Options,, TMS320C3x/C4x Options, gcc, Using and
+Porting the GNU Compiler Collection (GCC)},
+@end ifnothtml
+@ifhtml
+See ``TMS320C3x/C4x Options'' in the main manual
+@end ifhtml
+for the list of supported MCU types.
GCC can be configured as a cross compiler for both the C3x and C4x
architectures on the same system. Use @samp{configure --target=c4x
@itemize @bullet
@item
-@uref{http://www.elec.canterbury.ac.nz/c4x,,http://www.elec.canterbury.ac.nz/c4x}
+@uref{http://www.elec.canterbury.ac.nz/c4x/,,http://www.elec.canterbury.ac.nz/c4x/}
@end itemize
@html
</p>
<hr>
@end html
-@heading @anchor{decstation-*}decstation-*
-MIPS-based DECstations can support three different personalities:
-Ultrix, DEC OSF/1, and OSF/rose. (Alpha-based DECstation products have
-a configuration name beginning with @samp{alpha-dec}.) To configure GCC
-for these platforms use the following configurations:
+@heading @anchor{cris}CRIS
-@table @samp
-@item decstation-ultrix
-Ultrix configuration.
+CRIS is the CPU architecture in Axis Communications ETRAX system-on-a-chip
+series. These are used in embedded applications.
-@item decstation-osf1
-Dec's version of OSF/1.
+@ifnothtml
+@xref{CRIS Options,, CRIS Options, gcc, Using and Porting the GNU Compiler
+Collection (GCC)},
+@end ifnothtml
+@ifhtml
+See ``CRIS Options'' in the main manual
+@end ifhtml
+for a list of CRIS-specific options.
-@item decstation-osfrose
-Open Software Foundation reference port of OSF/1 which uses the
-OSF/rose object file format instead of ECOFF. Normally, you
-would not select this configuration.
+There are a few different CRIS targets:
+@table @code
+@item cris-axis-aout
+Old target. Includes a multilib for the @samp{elinux} a.out-based
+target. No multilibs for newer architecture variants.
+@item cris-axis-elf
+Mainly for monolithic embedded systems. Includes a multilib for the
+@samp{v10} core used in @samp{ETRAX 100 LX}.
+@item cris-axis-linux-gnu
+A GNU/Linux port for the CRIS architecture, currently targeting
+@samp{ETRAX 100 LX} by default.
@end table
-The MIPS C compiler needs to be told to increase its table size
-for switch statements with the @option{-Wf,-XNg1500} option in
-order to compile @file{cp/parse.c}. If you use the @option{-O2}
-optimization option, you also need to use @option{-Olimit 3000}.
-Both of these options are automatically generated in the
-@file{Makefile} that the shell script @file{configure} builds.
-If you override the @code{CC} make variable and use the MIPS
-compilers, you may need to add @option{-Wf,-XNg1500 -Olimit 3000}.
+For @code{cris-axis-aout} and @code{cris-axis-elf} you need binutils 2.11
+or newer. For @code{cris-axis-linux-gnu} you need binutils 2.12 or newer.
+
+Pre-packaged tools can be obtained from
+@uref{ftp://ftp.axis.com/pub/axis/tools/cris/compiler-kit/}. More
+information about this platform is available at
+@uref{http://developer.axis.com/}.
@html
</p>
Please have a look at our @uref{binaries.html,,binaries page}.
-You cannot install GNU C by itself on MSDOS; it will not compile under
+You cannot install GCC by itself on MSDOS; it will not compile under
any MSDOS compiler except itself. You need to get the complete
compilation package DJGPP, which includes binaries as well as sources,
and includes all the necessary compilation tools and libraries.
</p>
<hr>
@end html
+@heading @anchor{*-*-freebsd*}*-*-freebsd*
+
+The version of binutils installed in @file{/usr/bin} is known to work unless
+otherwise specified in any per-architecture notes. However, binutils
+2.11 or greater is known to improve overall testsuite results.
+
+For FreeBSD 1, FreeBSD 2 or any mutant a.out versions of FreeBSD 3: All
+configuration support and files as shipped with GCC 2.95 are still in
+place. FreeBSD 2.2.7 has been known to bootstrap completely; however,
+it is unknown which version of binutils was used (it is assumed that it
+was the system copy in @file{/usr/bin}) and C++ EH failures were noted.
+
+Support for FreeBSD 1 is obsoleted in GCC 3.1.
+
+For FreeBSD using the ELF file format: DWARF 2 debugging is now the
+default for all CPU architectures. It had been the default on
+FreeBSD/alpha since its inception. You may use @option{-gstabs} instead
+of @option{-g}, if you really want the old debugging format. There are
+no known issues with mixing object files and libraries with different
+debugging formats. Otherwise, this release of GCC should now match more
+of the configuration used in the stock FreeBSD configuration of GCC. In
+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@.
+
+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 and important
+test suite failures remain. 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
+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>
+@end html
@heading @anchor{elxsi-elxsi-bsd}elxsi-elxsi-bsd
The Elxsi's C compiler has known limitations that prevent it from
-compiling GNU C. Please contact @email{mrs@@cygnus.com} for more details.
+compiling GCC@. Please contact @email{mrs@@wrs.com} for more details.
+
+Support for this processor is obsoleted in GCC 3.1.
@html
</p>
@end html
@heading @anchor{hppa*-hp-hpux*}hppa*-hp-hpux*
-We @emph{highly} recommend using gas/binutils-2.8 or newer on all hppa
-platforms; you may encounter a variety of problems when using the HP
+We @emph{highly} recommend using gas/binutils 2.8 or newer on all hppa
+platforms; you may encounter a variety of problems when using the HP
assembler.
Specifically, @option{-g} does not work on HP-UX (since that system
@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
+the HP assembler, gas/binutils 2.11 or a recent
@uref{ftp://sources.redhat.com/pub/binutils/snapshots,,snapshot of gas}.
-More specific information to hppa*-hp-hpux* targets follows.
+More specific information to @samp{hppa*-hp-hpux*} targets follows.
@html
</p>
@end html
@heading @anchor{hppa*-hp-hpux10}hppa*-hp-hpux10
-For hpux10.20, we @emph{highly} recommend you pick up the latest sed patch
-@code{PHCO_19798} from HP. HP has two sites which provide patches free of
+For hpux10.20, we @emph{highly} recommend you pick up the latest sed patch
+@code{PHCO_19798} from HP@. HP has two sites which provide patches free of
charge:
@itemize @bullet
The HP assembler on these systems is much better than the hpux9 assembler,
but still has some problems. Most notably the assembler inserts timestamps
into each object file it creates, causing the 3-stage comparison test to fail
-during a @samp{make bootstrap}. You should be able to continue by
-saying @samp{make all} after getting the failure from @samp{make
+during a @samp{make bootstrap}. You should be able to continue by
+saying @samp{make all} after getting the failure from @samp{make
bootstrap}.
@heading @anchor{hppa*-hp-hpux11}hppa*-hp-hpux11
GCC 3.0 supports HP-UX 11. You must use GNU binutils 2.11 or above on
-this platform.
-
-@html
-</p>
-<hr>
-@end html
-@heading @anchor{*-*-freebsd*}*-*-freebsd*
-
-The version of binutils installed in @file{/usr/bin} is known to work unless
-otherwise specified in any per-architecture notes. However, binutils
-2.11 is known to improve overall testsuite results.
-
-For FreeBSD 1, FreeBSD 2 or any mutant a.out versions of FreeBSD 3: All
-configuration support and files as shipped with gcc 2.95 are still in
-place. FreeBSD 2.2.7 has been known to bootstrap completely; however,
-it is unknown which version of binutils was used (it is assumed that it
-was the system copy in @file{/usr/bin}) and C++ EH failures were noted.
-
-For FreeBSD using the ELF file format: DWARF2 debugging is now the
-default for all CPU architectures. It had been the default on
-FreeBSD/alpha since its inception. You may use @option{-gstabs} instead
-of @option{-g}, if you really want the old debugging format. There are
-no known issues with mixing object files and libraries with different
-debugging formats. Otherwise, this release of gcc should now match more
-of the configuration used in the stock FreeBSD configuration of gcc. In
-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 and 5-CURRENT.
-
-At this time, @option{--enable-threads} is not compatible with
-@option{--enable-libgcj} on FreeBSD.
+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 2.95.x is not supported under HP-UX 11 and cannot be used to
+compile GCC 3.0. Refer to @uref{binaries.html,,binaries} for information
+about obtaining precompiled GCC binaries for HP-UX.
@html
</p>
@heading @anchor{*-*-linux-gnu}*-*-linux-gnu
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 libstdc++.
+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.
@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
+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
+will definitly 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.
@heading @anchor{ix86-*-linux*oldld}i?86-*-linux*oldld
Use this configuration to generate @file{a.out} binaries on Linux-based
GNU systems if you do not have gas/binutils version 2.5.2 or later
-installed. This is an obsolete configuration.
+installed.
+
+This configuration is obsoleted in GCC 3.1.
@html
</p>
@end html
@heading @anchor{ix86-*-linux*aout}i?86-*-linux*aout
Use this configuration to generate @file{a.out} binaries on Linux-based
-GNU systems. This configuration is being superseded. You must use
+GNU systems. This configuration is being superseded. You must use
gas/binutils version 2.5.2 or later.
@html
@end html
@heading @anchor{ix86-*-linux*}i?86-*-linux*
-You will need binutils-2.9.1.0.15 or newer for exception handling to work.
+You will need binutils 2.9.1.0.15 or newer for exception handling to work.
If you receive Signal 11 errors when building on GNU/Linux, then it is
possible you have a hardware problem. Further information on this can be
Unlike earlier versions of GCC, the ability to generate COFF with this
target is no longer provided.
-Earlier versions of GCC emitted Dwarf-1 when generating ELF to allow
+Earlier versions of GCC emitted DWARF 1 when generating ELF to allow
the system debugger to be used. That support was too burdensome to
-maintain. GCC now emits only dwarf-2 for this target. This means you
+maintain. GCC now emits only DWARF 2 for this target. This means you
may use either the UDK debugger or GDB to debug programs built by this
-version of GCC.
+version of GCC@.
-If you are building languages other than C, you must follow the instructions
-about invoking @samp{make bootstrap} because the native OpenServer
-compiler will build a @command{cc1plus} that will not correctly parse many
-valid C++ programs including those in @file{libgcc.a}.
-@strong{You must do a @samp{make bootstrap} if you are building with the
-native compiler.}
-
-Use of the @option{-march-pentiumpro} flag can result in
+Use of the @option{-march=pentiumpro} flag can result in
unrecognized opcodes when using the native assembler on OS versions before
-5.0.6. (Support for P6 opcodes was added to the native ELF assembler in
-that version.) While it's rather rare to see these emitted by GCC yet,
+5.0.6. (Support for P6 opcodes was added to the native ELF assembler in
+that version.) While it's rather rare to see these emitted by GCC yet,
errors of the basic form:
@example
are symptoms of this problem. You may work around this by not
building affected files with that flag, by using the GNU assembler, or
-by using the assembler provided with the current version of the OS.
+by using the assembler provided with the current version of the OS@.
Users of GNU assembler should see the note below for hazards on doing
so.
additional OpenServer-specific flags.
Systems based on OpenServer before 5.0.4 (@samp{uname -X}
-will tell you what you're running) require TLS597 from ftp.sco.com/TLS
+will tell you what you're running) require TLS597 from
+@uref{ftp://ftp.sco.com/TLS/,,ftp://ftp.sco.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
code. This can be seen as execution testsuite failures when using
@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
+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}.
The dynamic linker in OpenServer 5.0.5 (earlier versions may show
-the same problem) aborts on certain g77-compiled programs. It's particularly
+the same problem) aborts on certain G77-compiled programs. It's particularly
likely to be triggered by building Fortran code with the @option{-fPIC} flag.
Although it's conceivable that the error could be triggered by other
code, only G77-compiled code has been observed to cause this abort.
If you are getting core dumps immediately upon execution of your
-g77 program---and especially if it's compiled with @option{-fPIC}---try applying
-@uref{sco_osr5_g77.patch,,@file{sco_osr5_g77.patch}} to your libf2c and
-rebuilding GCC.
+G77 program---and especially if it's compiled with @option{-fPIC}---try applying
+@uref{sco_osr5_g77.patch,,@file{sco_osr5_g77.patch}} to your @samp{libf2c} and
+rebuilding GCC@.
Affected faults, when analyzed in a debugger, will show a stack
backtrace with a fault occurring in @code{rtld()} and the program
-running as @file{/usr/lib/ld.so.1}. This problem has been reported to SCO
+running as @file{/usr/lib/ld.so.1}. This problem has been reported to SCO
engineering and will hopefully be addressed in later releases.
@heading @anchor{ix86-*-udk}i?86-*-udk
This target emulates the SCO Universal Development Kit and requires that
-package be installed. (If it is installed, you will have a
-@file{/udk/usr/ccs/bin/cc} file present.) It's very much like the
-@code{i?86-*-unixware7*} target
+package be installed. (If it is installed, you will have a
+@file{/udk/usr/ccs/bin/cc} file present.) It's very much like the
+@samp{i?86-*-unixware7*} target
but is meant to be used when hosting on a system where UDK isn't the
default compiler such as OpenServer 5 or Unixware 2. This target will
-generate binaries that will run on OpenServer, Unixware 2, or Unixware 7,
-with the same warnings and caveats as the SCO UDK.
-
-You can stage1 with either your native compiler or with UDK. If you
-don't do a full bootstrap when initially building with your native compiler
-you will have an utterly unusable pile of bits as your reward.
+generate binaries that will run on OpenServer, Unixware 2, or Unixware 7,
+with the same warnings and caveats as the SCO UDK@.
This target is a little tricky to build because we have to distinguish
it from the native tools (so it gets headers, startups, and libraries
-from the right place) while making the tools not think we're actually
+from the right place) while making the tools not think we're actually
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
+@samp{CC=/udk/usr/ccs/bin/cc @var{/your/path/to}/gcc/configure
--host=i686-pc-udk --target=i686-pc-udk --program-prefix=udk-}
@emph{You should substitute @samp{i686} in the above command with the appropriate
processor for your host.}
-You should follow this with a @samp{make bootstrap} then
-@samp{make install}. You can then access the UDK-targeted GCC
+After the usual @samp{make bootstrap} and
+@samp{make install}, you can then access the UDK-targeted GCC
tools by adding @command{udk-} before the commonly known name. For
example, to invoke the C compiler, you would use @command{udk-gcc}.
They will coexist peacefully with any native-target GCC tools you may
<hr>
@end html
@heading @anchor{ix86-*-isc}i?86-*-isc
+This configuration is obsoleted in GCC 3.1.
+
It may be a good idea to link with GNU malloc instead of the malloc that
comes with the system.
</p>
<hr>
@end html
-@heading @anchor{ix86-*-esix}i?86-*-esix
-It may be good idea to link with GNU malloc instead of the malloc that
-comes with the system.
-
-@html
-</p>
-<hr>
-@end html
@heading @anchor{ix86-ibm-aix}i?86-ibm-aix
+This configuration is obsoleted in GCC 3.1.
+
You need to use GAS version 2.1 or later, and LD from
GNU binutils version 2.2 or later.
<hr>
@end html
@heading @anchor{ix86-sequent-bsd}i?86-sequent-bsd
+This configuration is obsoleted in GCC 3.1.
+
Go to the Berkeley universe before compiling.
@html
</p>
<hr>
@end html
-@heading @anchor{ix86-sequent-ptx1*}i?86-sequent-ptx1*, i?86-sequent-ptx2*
-You must install GNU @file{sed} before running @file{configure}.
+@heading @anchor{ix86-sequent-ptx1*}i?86-sequent-ptx1*, i?86-sequent-ptx2*, i?86-sequent-sysv3*
+This configuration is obsoleted in GCC 3.1.
+
+You must install GNU @command{sed} before running @command{configure}.
-@html
-</p>
-<hr>
-@end html
-@heading @anchor{#ix86-*-sysv3*}i?86-*-sysv3*
The @code{fixproto} shell script may trigger a bug in the system shell.
If you encounter this problem, upgrade your operating system or
-use BASH (the GNU shell) to run @code{fixproto}.
-
+use @command{bash} (the GNU shell) to run @code{fixproto}.
@html
</p>
<hr>
@end html
@heading @anchor{i860-intel-osf*}i860-intel-osf*
+All support for the i860 processor is obsoleted in GCC 3.1.
+
On the Intel Paragon (an i860 machine), if you are using operating
system version 1.0, you will get warnings or errors about redefinition
-of @code{va_arg} when you build GCC.
+of @code{va_arg} when you build GCC@.
If this happens, then you need to link most programs with the library
@file{iclib.a}. You must also modify @file{stdio.h} as follows: before
</p>
<hr>
@end html
+@heading @anchor{ia64-*-linux}ia64-*-linux
+IA-64 processor (also known as IPF, or Itanium Processor Family)
+running GNU/Linux.
+
+The toolchain is not completely finished, so requirements will continue
+to change.
+GCC 3.0.1 and later require glibc 2.2.4.
+GCC 3.0.2 requires binutils from 2001-09-05 or later.
+GCC 3.0.1 requires binutils 2.11.1 or later.
+
+None of the following versions of GCC has an ABI that is compatible
+with any of the other versions in this list, with the exception that
+Red Hat 2.96 and Trillian 000171 are compatible with each other:
+3.0.2, 3.0.1, 3.0, Red Hat 2.96, and Trillian 000717.
+This primarily affects C++ programs and programs that create shared libraries.
+Because of these ABI incompatibilities, GCC 3.0.2 is not recommended for
+user programs on GNU/Linux systems built using earlier compiler releases.
+GCC 3.0.2 is recommended for compiling linux, the kernel.
+GCC 3.0.2 is believed to be fully ABI compliant, and hence no more major
+ABI changes are expected.
+
+@html
+</p>
+<hr>
+@end html
@heading @anchor{*-lynx-lynxos}*-lynx-lynxos
-LynxOS 2.2 and earlier comes with GNU CC 1.x already installed as
+LynxOS 2.2 and earlier comes with GCC 1.x already installed as
@file{/bin/gcc}. You should compile with this instead of @file{/bin/cc}.
-You can tell GNU CC to use the GNU assembler and linker, by specifying
+You can tell GCC to use the GNU assembler and linker, by specifying
@samp{--with-gnu-as --with-gnu-ld} when configuring. These will produce
-COFF format object files and executables; otherwise GNU CC will use the
+COFF format object files and executables; otherwise GCC will use the
installed tools, which produce @file{a.out} format executables.
@html
newer is recommended to build on this platform.
Errors involving @code{alloca} when building GCC generally are due
-to an incorrect definition of @var{CC} in the Makefile or mixing files
-compiled with the native C compiler and GCC. During the stage1 phase of
+to an incorrect definition of @code{CC} in the Makefile or mixing files
+compiled with the native C compiler and GCC@. During the stage1 phase of
the build, the native AIX compiler @strong{must} be invoked as @command{cc}
(not @command{xlc}). Once @command{configure} has been informed of
@command{xlc}, one needs to use @samp{make distclean} to remove the
If this error occurs during stage2 or later, then the problem most likely
is the version of Make (see above).
-Binutils 2.10 does not support AIX 4.3. Binutils available from the
-@uref{http://www-1.ibm.com/servers/aix/products/aixos/linux/,,AIX
-Toolbox for Linux: GNU and Open Source tools for AIX};
-website does work. Binutils 2.11 is expected to include AIX 4.3
-support. The GNU Assembler is necessary for libstdc++ to build. The
-AIX native ld still is recommended. The native AIX tools do
-interoperate with GCC.
+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
+@command{ld} still are recommended. The native AIX tools do
+interoperate with GCC@.
+
+Building @file{libstdc++.a} requires a fix for a AIX Assembler bug
+APAR IY26685 (AIX 4.3) or APAR IY25528 (AIX 5.1).
Linking executables and shared libraries may produce warnings of
duplicate symbols. The assembly files generated by GCC for AIX always
with AIX 4.3.1 should work for a 32-bit environment. The @option{-g}
option of the archive command may be used to create archives of 32-bit
objects using the original ``small format''. A correct version of the
-routines is shipped with AIX 4.3.2.
+routines is shipped with AIX 4.3.2 and above.
Some versions of the AIX binder (linker) can fail with a relocation
overflow severe error when the @option{-bbigtoc} option is used to link
-GCC-produced object files into an executable that overflows the TOC. A fix
+GCC-produced object files into an executable that overflows the TOC@. A fix
for APAR IX75823 (OVERFLOW DURING LINK WHEN USING GCC AND -BBIGTOC) is
available from IBM Customer Support and from its
-@uref{http://service.boulder.ibm.com/,,service.boulder.ibm.com}
+@uref{http://techsupport.services.ibm.com/,,techsupport.services.ibm.com}
website as PTF U455193.
The AIX 4.3.2.1 linker (bos.rte.bind_cmds Level 4.3.2.1) will dump core
-with a segmentation fault when invoked by any version of GCC. A fix for
+with a segmentation fault when invoked by any version of GCC@. A fix for
APAR IX87327 is available from IBM Customer Support and from its
-@uref{http://service.boulder.ibm.com/,,service.boulder.ibm.com}
+@uref{http://techsupport.services.ibm.com/,,techsupport.services.ibm.com}
website as PTF U461879. This fix is incorporated in AIX 4.3.3 and above.
The initial assembler shipped with AIX 4.3.0 generates incorrect object
files. A fix for APAR IX74254 (64BIT DISASSEMBLED OUTPUT FROM COMPILER FAILS
TO ASSEMBLE/BIND) is available from IBM Customer Support and from its
-@uref{http://service.boulder.ibm.com/,,service.boulder.ibm.com}
+@uref{http://techsupport.services.ibm.com/,,techsupport.services.ibm.com}
website as PTF U453956. This fix is incorporated in AIX 4.3.1 and above.
-AIX provides National Language Support (NLS). Compilers and assemblers
+AIX provides National Language Support (NLS)@. Compilers and assemblers
use NLS to support locale-specific representations of various data
formats including floating-point numbers (e.g., @samp{.} vs @samp{,} for
separating decimal fractions). There have been problems reported where
By default, GCC for AIX 4.1 and above produces code that can be used on
both Power or PowerPC processors.
-You can specify a default version for the @option{-mcpu=@var{cpu_type}}
-switch by using the configure option @option{--with-cpu-@var{cpu_type}}.
+A default can be specified with the @option{-mcpu=@var{cpu_type}}
+switch and using the configure option @option{--with-cpu-@var{cpu_type}}.
@html
</p>
<hr>
@end html
@heading @anchor{m68000-hp-bsd}m68000-hp-bsd
-HP 9000 series 200 running BSD. Note that the C compiler that comes
-with this system cannot compile GNU CC; contact @email{law@@cygnus.com}
-to get binaries of GNU CC for bootstrapping.
+HP 9000 series 200 running BSD@. Note that the C compiler that comes
+with this system cannot compile GCC; contact @email{law@@cygnus.com}
+to get binaries of GCC for bootstrapping.
@html
</p>
<hr>
@end html
@heading @anchor{m68k-altos}m68k-altos
-Altos 3068. You must use the GNU assembler, linker and debugger.
-Also, you must fix a kernel bug. Details in the file @file{README.ALTOS}.
+Altos 3068. This configuration is obsoleted in GCC 3.1.
+
+You must use the GNU assembler, linker and debugger.
+Also, you must fix a kernel bug.
@html
</p>
<hr>
@end html
@heading @anchor{m68k-apple-aux}m68k-apple-aux
-Apple Macintosh running A/UX.
+Apple Macintosh running A/UX@.
+This configuration is obsoleted in GCC 3.1.
+
You may configure GCC to use either the system assembler and
linker or the GNU assembler and linker. You should use the GNU configuration
-if you can, especially if you also want to use GNU C++. You enabled
-that configuration with + the @option{--with-gnu-as} and @option{--with-gnu-ld}
+if you can, especially if you also want to use G++. You enable
+that configuration with the @option{--with-gnu-as} and @option{--with-gnu-ld}
options to @code{configure}.
Note the C compiler that comes
-with this system cannot compile GNU CC. You can find binaries of GNU CC
+with this system cannot compile GCC@. You can find binaries of GCC
for bootstrapping on @code{jagubox.gsfc.nasa.gov}.
You will also a patched version of @file{/bin/ld} there that
raises some of the arbitrary limits found in the original.
<hr>
@end html
@heading @anchor{m68k-att-sysv}m68k-att-sysv
-AT&T 3b1, a.k.a. 7300 PC. This version of GNU CC cannot
+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
<hr>
@end html
@heading @anchor{m68k-bull-sysv}m68k-bull-sysv
-Bull DPX/2 series 200 and 300 with BOS-2.00.45 up to BOS-2.01. GNU CC works
-either with native assembler or GNU assembler. You can use
-GNU assembler with native coff generation by providing @option{--with-gnu-as} to
-the configure script or use GNU assembler with dbx-in-coff encapsulation
-by providing @samp{--with-gnu-as --stabs}. For any problem with native
+Bull DPX/2 series 200 and 300 with BOS-2.00.45 up to BOS-2.01.
+This configuration is obsoleted in GCC 3.1.
+
+GCC works
+either with native assembler or GNU assembler. You can use
+GNU assembler with native COFF generation by providing @option{--with-gnu-as} to
+the configure script or use GNU assembler with stabs-in-COFF encapsulation
+by providing @samp{--with-gnu-as --stabs}. For any problem with the native
assembler or for availability of the DPX/2 port of GAS, contact
@email{F.Pierresteguy@@frcl.bull.fr}.
</p>
<hr>
@end html
-@heading @anchor{m68k-crds-unox}m68k-crds-unox
+@heading @anchor{m68k-crds-unos}m68k-crds-unos
Use @samp{configure unos} for building on Unos.
The Unos assembler is named @code{casm} instead of @code{as}. For some
strange reason linking @file{/bin/as} to @file{/bin/casm} changes the
-behavior, and does not work. So, when installing GNU CC, you should
+behavior, and does not work. So, when installing GCC, you should
install the following script as @file{as} in the subdirectory where
the passes of GCC are installed:
@end example
The default Unos library is named @file{libunos.a} instead of
-@file{libc.a}. To allow GNU CC to function, either change all
+@file{libc.a}. To allow GCC to function, either change all
references to @option{-lc} in @file{gcc.c} to @option{-lunos} or link
@file{/lib/libc.a} to @file{/lib/libunos.a}.
@cindex @code{alloca}, for Unos
-When compiling GNU CC with the standard compiler, to overcome bugs in
+When compiling GCC with the standard compiler, to overcome bugs in
the support of @code{alloca}, do not use @option{-O} when making stage 2.
Then use the stage 2 compiler with @option{-O} to make the stage 3
compiler. This compiler will have the same characteristics as the usual
<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
-the assembler that prevents compilation of GNU CC. This
+HP 9000 series 300 or 400 running HP-UX@. HP-UX version 8.0 has a bug in
+the assembler that prevents compilation of GCC@. This
bug manifests itself during the first stage of compilation, while
building @file{libgcc2.a}:
This patch is also known as PHCO_4484.
-In addition, if you wish to use gas @option{--with-gnu-as} you must use
+In addition, if you wish to use gas, you must use
gas version 2.1 or later, and you must use the GNU linker version 2.1 or
later. Earlier versions of gas relied upon a program which converted the
gas output into the native HP-UX format, but that program has not been
<hr>
@end html
@heading @anchor{m68k-*-nextstep*}m68k-*-nextstep*
+These configurations are obsoleted in GCC 3.1.
Current GCC versions probably do not work on version 2 of the NeXT
operating system.
You absolutely @strong{must} use GNU sed and GNU make on this platform.
-On NEXTSTEP 3.x where x < 3 the build of GCC will abort during
+On NeXTSTEP 3.x where x < 3 the build of GCC will abort during
stage1 with an error message like this:
@example
valued 95 (_).
@end example
-The reason for this is the fact that NeXT's assembler for these
+The reason for this is the fact that NeXT's assembler for these
versions of the operating system does not support the @samp{.section}
pseudo op that's needed for full C++ exception functionality.
-As NeXT's assembler is a derived work from GNU as, a free
-replacement that does can be obtained at
+As NeXT's assembler is a derived work from GNU as, a free
+replacement that does can be obtained at
@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}.
If you try to build the integrated C++ & C++ runtime libraries on this system
@heading @anchor{m68k-sun}m68k-sun
Sun 3. We do not provide a configuration file to use the Sun FPA by
default, because programs that establish signal handlers for floating
-point traps inherently cannot work with the FPA.
+point traps inherently cannot work with the FPA@.
@html
</p>
@end html
@heading @anchor{m88k-*-svr3}m88k-*-svr3
Motorola m88k running the AT&T/Unisoft/Motorola V.3 reference port.
+These configurations are obsoleted in GCC 3.1.
+
These systems tend to use the Green Hills C, revision 1.8.5, as the
standard C compiler. There are apparently bugs in this compiler that
result in object files differences between stage 2 and stage 3. If this
suggests you encountered a problem with the standard C compiler; the
stage 3 and 4 compilers may be usable.
-It is best, however, to use an older version of GNU CC for bootstrapping
+It is best, however, to use an older version of GCC for bootstrapping
if you have one.
@html
<hr>
@end html
@heading @anchor{m88k-*-dgux}m88k-*-dgux
-Motorola m88k running DG/UX. To build 88open BCS native or cross
+Motorola m88k running DG/UX@.
+These configurations are obsoleted in GCC 3.1.
+
+To build 88open BCS native or cross
compilers on DG/UX, specify the configuration name as
@samp{m88k-*-dguxbcs} and build in the 88open BCS software development
environment. To build ELF native or cross compilers on DG/UX, specify
<hr>
@end html
@heading @anchor{m88k-tektronix-sysv3}m88k-tektronix-sysv3
-Tektronix XD88 running UTekV 3.2e. Do not turn on
+Tektronix XD88 running UTekV 3.2e.
+These configurations are obsoleted in GCC 3.1.
+
+Do not turn on
optimization while building stage1 if you bootstrap with
-the buggy Green Hills compiler. Also, The bundled LAI
+the buggy Green Hills compiler. Also, the bundled LAI
System V NFS is buggy so if you build in an NFS mounted
directory, start from a fresh reboot, or avoid NFS all together.
Otherwise you may have trouble getting clean comparisons
@option{-call_shared} switch.
@heading @anchor{mips-mips-bsd}mips-mips-bsd
-MIPS machines running the MIPS operating system in BSD mode. It's
-possible that some old versions of the system lack the functions
+MIPS machines running the MIPS operating system in BSD mode.
+These configurations are obsoleted in GCC 3.1.
+
+It's possible that some old versions of the system lack the functions
@code{memcpy}, @code{memmove}, @code{memcmp}, and @code{memset}. If your
system lacks these, you must remove or undo the definition of
@code{TARGET_MEM_FUNCTIONS} in @file{mips-bsd.h}.
-The MIPS C compiler needs to be told to increase its table size
-for switch statements with the @option{-Wf,-XNg1500} option in
-order to compile @file{cp/parse.c}. If you use the @option{-O2}
+If you use the MIPS C compiler to bootstrap, it may be necessary
+to increase its table size for switch statements with the
+@option{-Wf,-XNg1500} option. If you use the @option{-O2}
+optimization option, you also need to use @option{-Olimit 3000}.
+Both of these options are automatically generated in the
+@file{Makefile} that the shell script @file{configure} builds.
+If you override the @code{CC} make variable and use the MIPS
+compilers, you may need to add @option{-Wf,-XNg1500 -Olimit 3000}.
+
+@html
+</p>
+<hr>
+@end html
+@heading @anchor{mips-dec-*}mips-dec-*
+These configurations are obsoleted in GCC 3.1.
+
+MIPS-based DECstations can support three different personalities:
+Ultrix, DEC OSF/1, and OSF/rose. (Alpha-based DECstation products have
+a configuration name beginning with @samp{alpha*-dec}.) To configure GCC
+for these platforms use the following configurations:
+
+@table @samp
+@item mips-dec-ultrix
+Ultrix configuration.
+
+@item mips-dec-osf1
+DEC's version of OSF/1.
+
+@item mips-dec-osfrose
+Open Software Foundation reference port of OSF/1 which uses the
+OSF/rose object file format instead of ECOFF@. Normally, you
+would not select this configuration.
+@end table
+
+If you use the MIPS C compiler to bootstrap, it may be necessary
+to increase its table size for switch statements with the
+@option{-Wf,-XNg1500} option. If you use the @option{-O2}
optimization option, you also need to use @option{-Olimit 3000}.
Both of these options are automatically generated in the
@file{Makefile} that the shell script @file{configure} builds.
<hr>
@end html
@heading @anchor{mips-mips-riscos*}mips-mips-riscos*
-The MIPS C compiler needs to be told to increase its table size
-for switch statements with the @option{-Wf,-XNg1500} option in
-order to compile @file{cp/parse.c}. If you use the @option{-O2}
+These configurations are obsoleted in GCC 3.1.
+
+If you use the MIPS C compiler to bootstrap, it may be necessary
+to increase its table size for switch statements with the
+@option{-Wf,-XNg1500} option. If you use the @option{-O2}
optimization option, you also need to use @option{-Olimit 3000}.
Both of these options are automatically generated in the
@file{Makefile} that the shell script @file{configure} builds.
for these platforms use the following configurations:
@table @samp
-@item mips-mips-riscos@code{rev}
-Default configuration for RISC-OS, revision @code{rev}.
+@item mips-mips-riscos@var{rev}
+Default configuration for RISC-OS, revision @var{rev}.
-@item mips-mips-riscos@code{rev}bsd
-BSD 4.3 configuration for RISC-OS, revision @code{rev}.
+@item mips-mips-riscos@var{rev}bsd
+BSD 4.3 configuration for RISC-OS, revision @var{rev}.
-@item mips-mips-riscos@code{rev}sysv4
-System V.4 configuration for RISC-OS, revision @code{rev}.
+@item mips-mips-riscos@var{rev}sysv4
+System V.4 configuration for RISC-OS, revision @var{rev}.
@html
</p>
<hr>
@end html
-@item mips-mips-riscos@code{rev}sysv
-System V.3 configuration for RISC-OS, revision @code{rev}.
+@item mips-mips-riscos@var{rev}sysv
+System V.3 configuration for RISC-OS, revision @var{rev}.
@end table
The revision @code{rev} mentioned above is the revision of
</p>
<hr>
@end html
-@heading @anchor{mips*-sgi-irix[45]}mips*-sgi-irix[45]
+@heading @anchor{mips-sgi-irix4}mips-sgi-irix4
+This configuration is obsoleted in GCC 3.1.
In order to compile GCC on an SGI running IRIX 4, the ``c.hdr.lib''
option must be installed from the CD-ROM supplied from Silicon Graphics.
This is found on the 2nd CD in release 4.0.1.
-In order to compile GCC on an SGI running IRIX 5, the ``compiler_dev.hdr''
-subsystem must be installed from the IDO CD-ROM supplied by Silicon
-Graphics.
-
-@code{make compare} may fail on version 5 of IRIX unless you add
-@option{-save-temps} to @code{CFLAGS}. On these systems, the name of the
-assembler input file is stored in the object file, and that makes
-comparison fail if it differs between the @code{stage1} and
-@code{stage2} compilations. The option @option{-save-temps} forces a
-fixed name to be used for the assembler input file, instead of a
-randomly chosen name in @file{/tmp}. Do not add @option{-save-temps}
-unless the comparisons fail without that option. If you do you
-@option{-save-temps}, you will have to manually delete the @samp{.i} and
-@samp{.s} files after each series of compilations.
-
-The MIPS C compiler needs to be told to increase its table size
-for switch statements with the @option{-Wf,-XNg1500} option in
-order to compile @file{cp/parse.c}. If you use the @option{-O2}
-optimization option, you also need to use @option{-Olimit 3000}.
-Both of these options are automatically generated in the
-@file{Makefile} that the shell script @file{configure} builds.
-If you override the @code{CC} make variable and use the MIPS
-compilers, you may need to add @samp{-Wf,-XNg1500 -Olimit 3000}.
-
-On Irix version 4.0.5F, and perhaps on some other versions as well,
+On IRIX version 4.0.5F, and perhaps on some other versions as well,
there is an assembler bug that reorders instructions incorrectly. To
work around it, specify the target configuration
@samp{mips-sgi-irix4loser}. This configuration inhibits assembler
The @option{-noasmopt} option can be useful for testing whether a problem
is due to erroneous assembler reordering. Even if a problem does not go
away with @option{-noasmopt}, it may still be due to assembler
-reordering---perhaps GNU CC itself was miscompiled as a result.
-
-To enable debugging under Irix 5, you must use GNU as 2.5 or later,
-and use the @option{--with-gnu-as} configure option when configuring gcc.
-GNU as is distributed as part of the binutils package.
-
-You must use GAS on these platforms, as the native assembler can not handle
-the code for exception handling support. Either of these messages indicates
-that you are using the MIPS assembler when instead you should be using GAS:
+reordering---perhaps GCC itself was miscompiled as a result.
-@samp{ as0: Error: ./libgcc2.c, line 1:Badly delimited numeric literal
- .4byte $LECIE1-$LSCIE1
- as0: Error: ./libgcc2.c, line 1:malformed statement}
-
-or:
-
-@samp{ as0: Error: /src/bld-gcc/gcc/libgcc2.c, line 1:undefined symbol in expression
- .word $LECIE1-$LSCIE1}
-
-These systems don't have ranlib, which various components in GCC need; you
-should be able to avoid this problem by installing GNU binutils, which includes
-a functional ranlib for this system.
-
-You may get the following warning on irix4 platforms, it can be safely
+You may get the following warning on IRIX 4 platforms, it can be safely
ignored.
@example
warning: foo.o does not have gp tables for all its sections.
@end example
-When building GCC, the build process loops rebuilding @command{cc1} over and
-over again. This happens on mips-sgi-irix5.2, and possibly other platforms.@*
-It has been reported that this is a known bug in the @command{make} shipped with
-IRIX 5.2. We recommend you use GNU @command{make} instead of the vendor supplied
-@command{make} program; however, you may have success with @command{smake} on IRIX 5.2 if
-you do not have GNU @command{make} available.
+@html
+</p>
+<hr>
+@end html
+@heading @anchor{mips-sgi-irix5}mips-sgi-irix5
-See @uref{http://freeware.sgi.com/,,http://freeware.sgi.com/} for more
-information about using GCC on IRIX platforms.
+This configuration has considerable problems, which will be fixed in a
+future release.
+In order to compile GCC on an SGI running IRIX 5, the ``compiler_dev.hdr''
+subsystem must be installed from the IDO CD-ROM supplied by Silicon
+Graphics. It is also available for download from
+@uref{http://www.sgi.com/developers/devtools/apis/ido.html,,http://www.sgi.com/developers/devtools/apis/ido.html}.
+
+@code{make compare} may fail on version 5 of IRIX unless you add
+@option{-save-temps} to @code{CFLAGS}. On these systems, the name of the
+assembler input file is stored in the object file, and that makes
+comparison fail if it differs between the @code{stage1} and
+@code{stage2} compilations. The option @option{-save-temps} forces a
+fixed name to be used for the assembler input file, instead of a
+randomly chosen name in @file{/tmp}. Do not add @option{-save-temps}
+unless the comparisons fail without that option. If you do you
+@option{-save-temps}, you will have to manually delete the @samp{.i} and
+@samp{.s} files after each series of compilations.
+
+If you use the MIPS C compiler to bootstrap, it may be necessary
+to increase its table size for switch statements with the
+@option{-Wf,-XNg1500} option. If you use the @option{-O2}
+optimization option, you also need to use @option{-Olimit 3000}.
+
+To enable debugging under IRIX 5, you must use GNU @command{as} 2.11.2
+or later,
+and use the @option{--with-gnu-as} configure option when configuring GCC.
+GNU @command{as} is distributed as part of the binutils package.
+When using release 2.11.2, you need to apply a patch
+@uref{http://sources.redhat.com/ml/binutils/2001-07/msg00352.html,,http://sources.redhat.com/ml/binutils/2001-07/msg00352.html}
+which will be included in the next release of binutils.
+
+When building GCC, the build process loops rebuilding @command{cc1} over
+and over again. This happens on @samp{mips-sgi-irix5.2}, and possibly
+other platforms. It has been reported that this is a known bug in the
+@command{make} shipped with IRIX 5.2. We recommend you use GNU
+@command{make} instead of the vendor supplied @command{make} program;
+however, you may have success with @command{smake} on IRIX 5.2 if you do
+not have GNU @command{make} available.
@html
</p>
<hr>
@end html
-@heading @anchor{mips*-sgi-irix6}mips*-sgi-irix6
+@heading @anchor{mips-sgi-irix6}mips-sgi-irix6
-You must @emph{not} use GAS on irix6 platforms; doing so will only
-cause problems.
-
-These systems don't have @command{ranlib}, which various components in GCC need; you
-should be able to avoid this problem by making a dummy script called @command{ranlib}
-which just exits with zero status and placing it in your path.
-
-If you are using Irix @command{cc} as your bootstrap compiler, you must
+If you are using IRIX @command{cc} as your bootstrap compiler, you must
ensure that the N32 ABI is in use. To test this, compile a simple C
file with @command{cc} and then run @command{file} on the
resulting object file. The output should look like:
@example
-@code{ test.o: ELF N32 MSB @dots{}}
+test.o: ELF N32 MSB @dots{}
@end example
If you see:
+
@example
-@code{ test.o: ELF 32-bit MSB}
+test.o: ELF 32-bit MSB @dots{}
@end example
-then your version of @command{cc} uses the O32 ABI default. You
+or
+
+@example
+test.o: ELF 64-bit MSB @dots{}
+@end example
+
+then your version of @command{cc} uses the O32 or N64 ABI by default. You
should set the environment variable @env{CC} to @samp{cc -n32}
-before configuring GCC.
+before configuring GCC@.
+
+GCC on IRIX 6 is usually built to support both the N32 and N64 ABIs. If
+you build GCC on a system that doesn't have the N64 libraries installed,
+you need to configure with @option{--disable-multilib} so GCC doesn't
+try to use them. Look for @file{/usr/lib64/libc.so.1} to see if you
+have the 64-bit libraries installed.
+
+You must @emph{not} use GNU @command{as} (which isn't built anyway as of
+binutils 2.11.2) on IRIX 6 platforms; doing so will only cause problems.
GCC does not currently support generating O32 ABI binaries in the
-mips-sgi-irix6 configurations. It used to be possible to create a GCC
-with O32 ABI only support by configuring it for the mips-sgi-irix5
-target. See the link below for details.
+@samp{mips-sgi-irix6} configurations. It is possible to create a GCC
+with O32 ABI only support by configuring it for the @samp{mips-sgi-irix5}
+target and using a patched GNU @command{as} 2.11.2 as documented in the
+@uref{#mips-sgi-irix5,,@samp{mips-sgi-irix5}} section above. Using the
+native assembler requires patches to GCC which will be included in a
+future release. It is
+expected that O32 ABI support will be available again in a future release.
+
+The @option{--enable-threads} option doesn't currently work, a patch is
+in preparation for a future release. The @option{--enable-libgcj}
+option is disabled by default: IRIX 6 uses a very low default limit
+(20480) for the command line length. Although libtool contains a
+workaround for this problem, at least the N64 @samp{libgcj} is known not
+to build despite this, running into an internal error of the native
+@command{ld}. A sure fix is to increase this limit (@samp{ncargs}) to
+its maximum of 262144 bytes. If you have root access, you can use the
+@command{systune} command to do this.
GCC does not correctly pass/return structures which are
-smaller than 16 bytes and which are not 8 bytes. The problem is very
-involved and difficult to fix. It affects a number of other targets also,
+smaller than 16 bytes and which are not 8 bytes. The problem is very
+involved and difficult to fix. It affects a number of other targets also,
but IRIX 6 is affected the most, because it is a 64 bit target, and 4 byte
-structures are common. The exact problem is that structures are being padded
-at the wrong end, e.g. a 4 byte structure is loaded into the lower 4 bytes
+structures are common. The exact problem is that structures are being padded
+at the wrong end, e.g.@: a 4 byte structure is loaded into the lower 4 bytes
of the register when it should be loaded into the upper 4 bytes of the
register.
GCC is consistent with itself, but not consistent with the SGI C compiler
(and the SGI supplied runtime libraries), so the only failures that can
happen are when there are library functions that take/return such
-structures. There are very few such library functions. I can only recall
-seeing two of them: inet_ntoa, and semctl.
+structures. There are very few such library functions. Currently this
+is known to affect @code{inet_ntoa}, @code{inet_lnaof},
+@code{inet_netof}, @code{inet_makeaddr}, and @code{semctl}. Until the
+bug is fixed, GCC contains workarounds for the known affected functions.
See @uref{http://freeware.sgi.com/,,http://freeware.sgi.com/} for more
information about using GCC on IRIX platforms.
-
@html
</p>
<hr>
@end html
@heading @anchor{mips-sony-sysv}mips-sony-sysv
-Sony MIPS NEWS. This works in NEWSOS 5.0.1, but not in 5.0.2 (which
-uses ELF instead of COFF). Support for 5.0.2 will probably be provided
-soon by volunteers. In particular, the linker does not like the
-code generated by GCC when shared libraries are linked in.
+Sony MIPS NEWS@. This configuration is obsoleted in GCC 3.1.
+This works in NEWSOS 5.0.1, but not in 5.0.2 (which uses ELF instead of
+COFF)@. In particular, the linker does not like the code generated by
+GCC when shared libraries are linked in.
@html
</p>
<hr>
@end html
@heading @anchor{ns32k-encore}ns32k-encore
-Encore ns32000 system. Encore systems are supported only under BSD.
+This configuration is obsoleted in GCC 3.1.
+
+Encore ns32000 system. Encore systems are supported only under BSD@.
@html
</p>
<hr>
@end html
@heading @anchor{ns32k-*-genix}ns32k-*-genix
-National Semiconductor ns32000 system. Genix has bugs in @code{alloca}
-and @code{malloc}; you must get the compiled versions of these from GNU
-Emacs.
+National Semiconductor ns32000 system. This configuration is obsoleted
+in GCC 3.1.
+
+Genix has bugs in @code{alloca} and @code{malloc}; you must get the
+compiled versions of these from GNU Emacs.
@html
</p>
<hr>
@end html
@heading @anchor{ns32k-sequent}ns32k-sequent
+This configuration is obsoleted in GCC 3.1.
+
Go to the Berkeley universe before compiling.
@html
<hr>
@end html
@heading @anchor{ns32k-utek}ns32k-utek
-UTEK ns32000 system (``merlin''). The C compiler that comes with this
-system cannot compile GNU CC; contact @samp{tektronix!reed!mason} to get
-binaries of GNU CC for bootstrapping.
+UTEK ns32000 system (``merlin''). This configuration is obsoleted in
+GCC 3.1.
+
+The C compiler that comes with this system cannot compile GCC; contact
+@samp{tektronix!reed!mason} to get binaries of GCC for bootstrapping.
@html
</p>
<hr>
@end html
-@heading @anchor{powerpc-*-elf}powerpc-*-elf, powerpc-*-sysv4
-PowerPC system in big endian mode, running System V.4.
+@heading @anchor{powerpc*-*-*}powerpc-*-*
You can specify a default version for the @option{-mcpu=@var{cpu_type}}
switch by using the configure option @option{--with-cpu-@var{cpu_type}}.
</p>
<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
+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,
+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}.
+
+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.
+
+@html
+</p>
+<hr>
+@end html
+@heading @anchor{powerpc-*-elf}powerpc-*-elf, powerpc-*-sysv4
+PowerPC system in big endian mode, running System V.4.
+
+@html
+</p>
+<hr>
+@end html
@heading @anchor{powerpc-*-linux-gnu*}powerpc-*-linux-gnu*
-You will need
-@uref{ftp://ftp.varesearch.com/pub/support/hjl/binutils,,binutils-2.9.4.0.8}
-or newer for a working GCC. It is strongly recommended to recompile binutils
+You will need
+@uref{ftp://ftp.varesearch.com/pub/support/hjl/binutils,,binutils 2.9.4.0.8}
+or newer for a working GCC@. It is strongly recommended to recompile binutils
if you initially built it with gcc-2.7.2.x.
-You can specify a default version for the @option{-mcpu=@var{cpu_type}}
-switch by using the configure option @option{--with-cpu-@var{cpu_type}}.
+@html
+</p>
+<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
+Texinfo version 3.12).
@html
</p>
Embedded PowerPC system in big endian mode with @option{-mcall-aix} selected as
the default.
-You can specify a default version for the @option{-mcpu=@var{cpu_type}}
-switch by using the configure option @option{--with-cpu-@var{cpu_type}}.
-
@html
</p>
<hr>
Embedded PowerPC system in big endian mode for use in running under the
PSIM simulator.
-You can specify a default version for the @option{-mcpu=@var{cpu_type}}
-switch by using the configure option @option{--with-cpu-@var{cpu_type}}.
-
@html
</p>
<hr>
@heading @anchor{powerpc-*-eabi}powerpc-*-eabi
Embedded PowerPC system in big endian mode.
-You can specify a default version for the @option{-mcpu=@var{cpu_type}}
-switch by using the configure option @option{--with-cpu-@var{cpu_type}}.
-
@html
</p>
<hr>
@heading @anchor{powerpcle-*-elf}powerpcle-*-elf, powerpcle-*-sysv4
PowerPC system in little endian mode, running System V.4.
-You can specify a default version for the @option{-mcpu=@var{cpu_type}}
-switch by using the configure option @option{--with-cpu-@var{cpu_type}}.
-
@html
</p>
<hr>
@heading @anchor{powerpcle-*-eabi}powerpcle-*-eabi
Embedded PowerPC system in little endian mode.
-You can specify a default version for the @option{-mcpu=@var{cpu_type}}
-switch by using the configure option @option{--with-cpu-@var{cpu_type}}.
-
@html
</p>
<hr>
@end html
@heading @anchor{powerpcle-*-winnt}powerpcle-*-winnt, powerpcle-*-pe
-PowerPC system in little endian mode running Windows NT.
-
-You can specify a default version for the @option{-mcpu=@var{cpu_type}}
-switch by using the configure option @option{--with-cpu-@var{cpu_type}}.
+PowerPC system in little endian mode running Windows NT@.
@html
</p>
<hr>
@end html
@heading @anchor{romp-*-aos}romp-*-aos, romp-*-mach
-The only operating systems supported for the IBM RT PC are AOS and
-MACH. GNU CC does not support AIX running on the RT. We recommend you
-compile GNU CC with an earlier version of itself; if you compile GNU CC
-with @code{hc}, the Metaware compiler, it will work, but you will get
-mismatches between the stage 2 and stage 3 compilers in various files.
-These errors are minor differences in some floating-point constants and
-can be safely ignored; the stage 3 compiler is correct.
+These configurations are obsoleted in GCC 3.1.
+
+We recommend you compile GCC with an earlier version of itself; if you
+compile GCC with @command{hc}, the Metaware compiler, it will work, but
+you will get mismatches between the stage 2 and stage 3 compilers in
+various files. These errors are minor differences in some
+floating-point constants and can be safely ignored; the stage 3 compiler
+is correct.
@html
</p>
<hr>
@end html
-@heading @anchor{*-*-solaris*}*-*-solaris*
-
-Starting with Solaris, Sun does not ship a C compiler any more. To
-bootstrap and install GCC you first have to install a pre-built
-compiler, see our @uref{binaries.html,,binaries page} for
-details.
-
-You must use GNU Make to build GCC on Solaris 2. If you don't have GNU
-Make installed, you can use the prebuilt compiler mentioned above to
-build it.
-
-Sun 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.}
-
-This is Sun bug 4237974. This is fixed with patch 108908-02 and has
-been fixed in later (5.x) versions of the assembler.
-
-Solaris' @file{/bin/sh} will often fail to configure libstdc++-v3, boehm-gc or
-libjava. If you encounter this problem, set @var{CONFIG_SHELL} to
-@file{/bin/ksh} in your environment and run @samp{make bootstrap} again.
-Another possibility that sometimes helps is to remove
-@file{*-*-solaris*/config.cache}.
+@heading @anchor{s390-*-linux*}s390-*-linux*
+S/390 system running Linux for S/390@.
@html
-<p>
+</p>
<hr>
@end html
-@heading @anchor{sparc-sun-*}sparc-sun-*
-Sometimes on a Sun 4 you may observe a crash in the program
-@code{genflags} or @code{genoutput} while building GCC. This is said to
-be due to a bug in @code{sh}. You can probably get around it by running
-@code{genflags} or @code{genoutput} manually and then retrying the
-@code{make}.
+@heading @anchor{s390x-*-linux*}s390x-*-linux*
+zSeries system (64 Bit) running Linux for zSeries@.
@html
-<p>
+</p>
<hr>
@end html
-@heading @anchor{sparc-sun-solaris*}sparc-sun-solaris*
-On Solaris 2, executables of GCC version 2.0.2 are commonly
-available, but they have a bug that shows up when compiling current
-versions of GCC: undefined symbol errors occur during assembly if you
-use @option{-g}.
+@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
+@c SunOS 4 releases which we don't use to avoid confusion. Solaris
+@c alone is too unspecific and must be avoided.
+@heading @anchor{*-*-solaris2*}*-*-solaris2*
-The solution is to compile the current version of GCC without
-@option{-g}. That makes a working compiler which you can use to recompile
-with @option{-g}.
+Sun does not ship a C compiler with Solaris 2. To bootstrap and install
+GCC you first have to install a pre-built compiler, see our
+@uref{binaries.html,,binaries page} for details.
+
+The Solaris 2 @command{/bin/sh} will often fail to configure
+@file{libstdc++-v3}, @file{boehm-gc} or
+@file{libjava}. If you encounter this problem, set @env{CONFIG_SHELL} to
+@command{/bin/ksh} in your environment and run @command{make bootstrap} again.
+Another possibility that sometimes helps is to remove
+@file{*-*-solaris2*/config.cache}.
Solaris 2 comes with a number of optional OS packages. Some of these
-packages are needed to use GCC fully. If you did not install all
-optional packages when installing Solaris, you will need to verify that
+packages are needed to use GCC fully, namely @code{SUNWarc},
+@code{SUNWbtool}, @code{SUNWesu}, @code{SUNWhea}, @code{SUNWlibm},
+@code{SUNWsprot}, and @code{SUNWtoo}. If you did not install all
+optional packages when installing Solaris 2, you will need to verify that
the packages that GCC needs are installed.
To check whether an optional package is installed, use
-the @code{pkginfo} command. To add an optional package, use the
-@code{pkgadd} command. For further details, see the Solaris
+the @command{pkginfo} command. To add an optional package, use the
+@command{pkgadd} command. For further details, see the Solaris 2
documentation.
-For Solaris 2.0 and 2.1, GCC needs six packages: @samp{SUNWarc},
-@samp{SUNWbtool}, @samp{SUNWesu}, @samp{SUNWhea}, @samp{SUNWlibm}, and
-@samp{SUNWtoo}.
-
-For Solaris 2.2, GCC needs an additional seventh package: @samp{SUNWsprot}.
-
-On Solaris 2, trying to use the linker and other tools in
+Trying to use the linker and other tools in
@file{/usr/ucb} to install GCC has been observed to cause trouble.
For example, the linker may hang indefinitely. The fix is to remove
-@file{/usr/ucb} from your @code{PATH}.
+@file{/usr/ucb} from your @env{PATH}.
-All releases of GNU binutils prior to 2.11.1 have known bugs on this
-platform. We recommend the use of GNU binutils 2.11.1 or the vendor
-tools (Sun as, Sun ld).
+All releases of GNU binutils prior to 2.11.2 have known bugs on this
+platform. We recommend the use of GNU binutils 2.11.2 or the vendor
+tools (Sun @command{as}, Sun @command{ld}).
-Unfortunately, C++ shared libraries, including libstdc++, won't work
-properly if assembled with Sun as: the linker will complain about
-relocations in read-only sections, in the definition of virtual
-tables. Also, Sun as fails to process long symbols resulting from
-mangling template-heavy C++ function names.
+Sun bug 4296832 turns up when compiling X11 headers with GCC 2.95 or
+newer: @command{g++} will complain that types are missing. These headers assume
+that omitting the type means @code{int}; this assumption worked for C89 but
+is wrong for C++, and is now wrong for C99 also.
+
+@command{g++} accepts such (invalid) constructs with the option
+@option{-fpermissive}; it
+will assume that any missing type is @code{int} (as defined by C89).
+
+There are patches for Solaris 2.6 (105633-56 or newer for SPARC,
+106248-42 or newer for Intel), Solaris 7 (108376-21 or newer for SPARC,
+108377-20 for Intel), and Solaris 8 (108652-24 or newer for SPARC,
+108653-22 for Intel) that fix this bug.
+
+@html
+</p>
+<hr>
+@end html
+@heading @anchor{sparc-sun-solaris2*}sparc-sun-solaris2*
+
+When GCC is configured to use binutils 2.11.2 or later the binaries
+produced are smaller than the ones produced using Sun's native tools;
+this difference is quite significant for binaries containing debugging
+information.
+
+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.}
+
+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,
+starting with Solaris 7.
+
+Starting with Solaris 7, the operating system is capable of executing
+64-bit SPARC V9 binaries. GCC 3.1 and later should properly support
+this. GCC 3.0 lacks the infrastructure necessary to support this
+configuration properly. However, if all you want is code tuned for
+the UltraSPARC CPU, you should try the @option{-mtune=ultrasparc}
+option instead, which should be safe from those bugs and produce code
+that, unlike full 64-bit code, can still run on non-UltraSPARC
+machines.
+
+When configuring on a Solaris 7 or 8 system that is running a kernel
+that supports only 32-bit binaries, one must configure with
+@option{--disable-multilib}, since we will not be able to build the
+64-bit target libraries.
@html
</p>
@end html
@heading @anchor{sparc-sun-solaris2.7}sparc-sun-solaris2.7
-Sun patch 107058-01 (1999-01-13) for SPARC Solaris 7 triggers a bug in
+Sun patch 107058-01 (1999-01-13) for Solaris 7/SPARC triggers a bug in
the dynamic linker. This problem (Sun bug 4210064) affects GCC 2.8
and later, including all EGCS releases. Sun formerly recommended
107058-01 for all Solaris 7 users, but around 1999-09-01 it started to
recommend it only for people who use Sun's compilers.
-
+
Here are some workarounds to this problem:
@itemize @bullet
@item
Do not install Sun patch 107058-01 until after Sun releases a
complete patch for bug 4210064. This is the simplest course to take,
unless you must also use Sun's C compiler. Unfortunately 107058-01
-is preinstalled on some new Solaris-based hosts, so you may have to
+is preinstalled on some new Solaris 7-based hosts, so you may have to
back it out.
-
+
@item
Copy the original, unpatched Solaris 7
@command{/usr/ccs/bin/as} into
-@command{/usr/local/lib/gcc-lib/sparc-sun-solaris2.7/2.95.1/as},
+@command{/usr/local/lib/gcc-lib/sparc-sun-solaris2.7/3.0/as},
adjusting the latter name to fit your local conventions and software
version numbers.
run code generated by GCC; it doesn't suffice to install it only on
the hosts that run GCC itself. Second, Sun says that 106950-03 is
only a partial fix for bug 4210064, but Sun doesn't know whether the
-partial fix is adequate for GCC. Revision -08 or later should fix
-the bug, but (as of 1999-10-06) it is still being tested.
-@end itemize
+partial fix is adequate for GCC@. Revision -08 or later should fix
+the bug. The current (as of 2001-09-24) revision is -14, and is included in
+the Solaris 7 Recommended Patch Cluster.
+@end itemize
@html
<p>
<hr>
-<!-- ripped from the same FAQ that I answered -->
@end html
-@heading @anchor{*-sun-solaris2.8}*-sun-solaris2.8
+@heading @anchor{*-*-solaris2.8}*-*-solaris2.8
-Sun bug 4296832 turns up when compiling X11 headers with GCC 2.95 or
-newer: @command{g++} will complain that types are missing. These headers assume
-that omitting the type means @code{int}; this assumption worked for C89 but
-is wrong for C++, and is now wrong for C99 also.
-
-@command{g++} accepts such (illegal) constructs with the option @option{-fpermissive}; it
-will assume that any missing type is @code{int} (as defined by C89).
-
-For Solaris 8, this is fixed by revision 24 or later of patch 108652
-(for SPARCs) or 108653 (for Intels).
-
-Solaris 8's linker fails to link some libjava programs if
+The Solaris 8 linker fails to link some @samp{libjava} programs if
previously-installed GCC java libraries already exist in the configured
-prefix. For this reason, libgcj is disabled by default on Solaris 8.
-If you use GNU ld, or if you don't have a previously-installed libgcj in
-the same prefix, use @option{--enable-libgcj} to build and install the
-Java libraries.
+prefix. For this reason, @command{configure} will report an error on
+Solaris 8 if an existing @samp{libgcj} is found in the appropriate
+install directory and the system linker is in use. In this case, you
+can configure with a different prefix, or delete or rename the existing
+@samp{libgcj} library files before configuring, or configure using
+@option{--disable-libgcj}.
@html
<p>
<hr>
@end html
-@heading @anchor{sunv5}Sun V5.0 Compiler Bugs
-
-The Sun V5.0 compilers are known to mis-compile GCC 2.95 and GCC 2.95.1,
-which in turn causes GCC to fail its bootstrap comparison test.
-GCC 2.95.2 has a workaround.
-
-
-@html
-</p>
-<hr>
-@end html
-@heading @anchor{sparc-sun-sunos*}sparc-sun-sunos*
+@heading @anchor{sparc-sun-sunos4*}sparc-sun-sunos4*
-A bug in the SunOS4 linker will cause it to crash when linking
+A bug in the SunOS 4 linker will cause it to crash when linking
@option{-fPIC} compiled objects (and will therefore not allow you to build
shared libraries).
To fix this problem you can either use the most recent version of
-binutils or get the latest SunOS4 linker patch (patch ID 100170-10)
+binutils or get the latest SunOS 4 linker patch (patch ID 100170-10)
from Sun's patch site.
+Sometimes on a Sun 4 you may observe a crash in the program
+@command{genflags} or @command{genoutput} while building GCC. This is said to
+be due to a bug in @command{sh}. You can probably get around it by running
+@command{genflags} or @command{genoutput} manually and then retrying the
+@command{make}.
@html
</p>
@end html
@heading @anchor{sparc-unknown-linux-gnulibc1}sparc-unknown-linux-gnulibc1
-It has been reported that you might need
-@uref{ftp://ftp.yggdrasil.com/private/hjl,,binutils-2.8.1.0.23}
+It has been reported that you might need
+@uref{ftp://ftp.yggdrasil.com/private/hjl,,binutils 2.8.1.0.23}
for this platform, too.
</p>
<hr>
@end html
+@heading @anchor{sparc-*-linux*}sparc-*-linux*
+
+GCC versions 3.0 and higher require binutils 2.11.2 and glibc 2.2.4
+or newer on this platform. All earlier binutils and glibc
+releases mishandled unaligned relocations on @code{sparc-*-*} targets.
+
+
+@html
+</p>
+<hr>
+@end html
@heading @anchor{sparc64-*-*}sparc64-*-*
GCC version 2.95 is not able to compile code correctly for
@code{sparc64} targets. Users of the Linux kernel, at least,
-12~can use the @code{sparc32} program to start up a new shell
+can use the @code{sparc32} program to start up a new shell
invocation with an environment that causes @command{configure} to
-recognize (via @samp{uname -a}) the system as @var{sparc-*-*} instead.
+recognize (via @samp{uname -a}) the system as @samp{sparc-*-*} instead.
+@html
+</p>
+<hr>
+@end html
+@heading @anchor{sparcv9-*-solaris2*}sparcv9-*-solaris2*
+
+The following compiler flags must be specified in the configure
+step in order to bootstrap this target with the Sun compiler:
+
+@example
+ % CC="cc -xildoff -xarch=v9" @var{srcdir}/configure [@var{options}] [@var{target}]
+@end example
+
+@option{-xildoff} turns off the incremental linker, and @option{-xarch=v9}
+specifies the v9 architecture to the Sun linker and assembler.
@html
</p>
in strings table for file @var{whatever}
@end smallexample
-This probably indicates that the disk is full or your ULIMIT won't allow
+This probably indicates that the disk is full or your ulimit won't allow
the file to be as large as it needs to be.
This problem can also result because the kernel parameter @code{MAXUMEM}
@end example
@noindent
-that too indicates a problem with disk space, ULIMIT, or @code{MAXUMEM}.
+that too indicates a problem with disk space, ulimit, or @code{MAXUMEM}.
On a System V release 4 system, make sure @file{/usr/bin} precedes
@file{/usr/ucb} in @code{PATH}. The @code{cc} command in
<hr>
@end html
@heading @anchor{vax-dec-ultrix}vax-dec-ultrix
-Don't try compiling with Vax C (@code{vcc}). It produces incorrect code
+Don't try compiling with VAX C (@code{vcc}). It produces incorrect code
in some cases (for example, when @code{alloca} is used).
-Meanwhile, compiling @file{cp/parse.c} with pcc does not work because of
-an internal table size limitation in that compiler. To avoid this
-problem, compile just the GNU C compiler first, and use it to recompile
-building all the languages that you want to run.
-
@html
</p>
<hr>
@heading @anchor{we32k-*-*}we32k-*-*
These computers are also known as the 3b2, 3b5, 3b20 and other similar
names. (However, the 3b1 is actually a 68000.)
+These configurations are obsoleted in GCC 3.1.
Don't use @option{-g} when compiling with the system's compiler. The
system's linker seems to be unable to handle such a large program with
debugging information.
The system's compiler runs out of capacity when compiling @file{stmt.c}
-in GNU CC. You can work around this by building @file{cpp} in GNU CC
+in GCC@. You can work around this by building @file{cpp} in GCC
first, then use that instead of the system's preprocessor with the
system's C compiler to compile @file{stmt.c}. Here is how:
chmod +x /lib/cpp
@end smallexample
-The system's compiler produces bad code for some of the GNU CC
+The system's compiler produces bad code for some of the GCC
optimization files. So you must build the stage 2 compiler without
optimization. Then build a stage 3 compiler with optimization.
That executable should work. Here are the necessary commands:
</p>
<hr>
@end html
+@heading @anchor{xtensa-*-elf}xtensa-*-elf
+
+This target is intended for embedded Xtensa systems using the
+@samp{newlib} C library. It uses ELF but does not support shared
+objects. Designed-defined instructions specified via the
+Tensilica Instruction Extension (TIE) language are only supported
+through inline assembly.
+
+The Xtensa configuration information must be specified prior to
+building GCC@. The @file{gcc/config/xtensa/xtensa-config.h} header
+file contains the configuration information. If you created your
+own Xtensa configuration with the Xtensa Processor Generator, the
+downloaded files include a customized copy of this header file,
+which you can use to replace the default header file.
+
+@html
+</p>
+<hr>
+@end html
+@heading @anchor{xtensa-*-linux*}xtensa-*-linux*
+
+This target is for Xtensa systems running GNU/Linux. It supports ELF
+shared objects and the GNU C library (glibc). It also generates
+position-independent code (PIC) regardless of whether the
+@option{-fpic} or @option{-fPIC} options are used. In other
+respects, this target is the same as the
+@uref{#xtensa-*-elf,,@samp{xtensa-*-elf}} target.
+
+@html
+</p>
+<hr>
+@end html
@heading @anchor{windows}Microsoft Windows (32 bit)
-A port of GCC 2.95.x is included with the
+A port of GCC 2.95.x is included with the
@uref{http://www.cygwin.com/,,Cygwin environment}.
Current (as of early 2001) snapshots of GCC will build under Cygwin
@heading @anchor{os2}OS/2
GCC does not currently support OS/2. However, Andrew Zabolotny has been
-working on a generic OS/2 port with pgcc. The current code code can be found
+working on a generic OS/2 port with pgcc. The current code can be found
at @uref{http://www.goof.com/pcg/os2/,,http://www.goof.com/pcg/os2/}.
-An older copy of GCC 2.8.1 is included with the EMX tools available at
+An older copy of GCC 2.8.1 is included with the EMX tools available at
@uref{ftp://ftp.leo.org/pub/comp/os/os2/leo/devtools/emx+gcc/,,
ftp://ftp.leo.org/pub/comp/os/os2/leo/devtools/emx+gcc/}.
<hr>
@end html
@heading @anchor{older}Older systems
-
-GCC contains support files for many older (1980s and early
-1990s) Unix variants. For the most part, support for these systems
-has not been deliberately removed, but it has not been maintained for
-several years and may suffer from bitrot. Support from some systems
-has been removed from GCC 3: fx80, ns32-ns-genix, pyramid, tahoe,
-gmicro, spur; most of these targets had not been updated since GCC
+
+GCC contains support files for many older (1980s and early
+1990s) Unix variants. For the most part, support for these systems
+has not been deliberately removed, but it has not been maintained for
+several years and may suffer from bitrot. Support from some systems
+has been removed from GCC 3: fx80, ns32-ns-genix, pyramid, tahoe,
+gmicro, spur; most of these targets had not been updated since GCC
version 1.
-
-Support for older systems as targets for cross-compilation is less
-problematic than support for them as hosts for GCC; if an enthusiast
-wishes to make such a target work again (including resurrecting any
-of the targets that never worked with GCC 2, starting from the last
-CVS version before they were removed), patches
-@uref{../contribute.html,,following the usual requirements}
-would be likely to be accepted, since they should not affect the
+
+We are planning to remove support for more older systems, starting in
+GCC 3.1. Each release will have a list of ``obsoleted'' systems.
+Support for these systems is still present in that release, but
+@command{configure} will fail unless the @option{--enable-obsolete}
+option is given. Unless a maintainer steps forward, support for
+these systems will be removed from the next release of GCC@.
+
+Support for older systems as targets for cross-compilation is less
+problematic than support for them as hosts for GCC; if an enthusiast
+wishes to make such a target work again (including resurrecting any
+of the targets that never worked with GCC 2, starting from the last
+CVS version before they were removed), patches
+@uref{../contribute.html,,following the usual requirements}
+would be likely to be accepted, since they should not affect the
support for more modern targets.
-
-Support for old systems as hosts for GCC can cause problems if the
-workarounds for compiler, library and operating system bugs affect the
-cleanliness or maintainability of the rest of GCC. In some cases, to
-bring GCC up on such a system, if still possible with current GCC, may
-require first installing an old version of GCC which did work on that
-system, and using it to compile a more recent GCC, to avoid bugs in
-the vendor compiler. Old releases of GCC 1 and GCC 2 are available in
-the old-releases directory on the
-@uref{../mirrors.html,,GCC mirror sites}. Header bugs may generally
+
+Support for old systems as hosts for GCC can cause problems if the
+workarounds for compiler, library and operating system bugs affect the
+cleanliness or maintainability of the rest of GCC@. In some cases, to
+bring GCC up on such a system, if still possible with current GCC, may
+require first installing an old version of GCC which did work on that
+system, and using it to compile a more recent GCC, to avoid bugs in
+the vendor compiler. Old releases of GCC 1 and GCC 2 are available in
+the @file{old-releases} directory on the
+@uref{../mirrors.html,,GCC mirror sites}. Header bugs may generally
be avoided using @command{fixincludes}, but bugs or deficiencies in
libraries and the operating system may still cause problems.
-
-For some systems, old versions of GNU binutils may also be useful,
-and are available from pub/binutils/old-releases on
+
+For some systems, old versions of GNU binutils may also be useful,
+and are available from @file{pub/binutils/old-releases} on
@uref{http://sources.redhat.com/mirrors.html,,sources.redhat.com mirror sites}.
-
-Some of the information on specific systems above relates to
-such older systems, but much of the information
-about GCC on such systems (which may no longer be applicable to
+
+Some of the information on specific systems above relates to
+such older systems, but much of the information
+about GCC on such systems (which may no longer be applicable to
current GCC) is to be found in the GCC texinfo manual.
-
+
@html
</p>
<hr>
@end html
-@heading @anchor{elf_targets}all ELF targets (SVR4, Solaris, etc.)
+@heading @anchor{elf_targets}all ELF targets (SVR4, Solaris 2, etc.)
C++ support is significantly better on ELF targets if you use the
@uref{./configure.html#with-gnu-ld,,GNU linker}; duplicate copies of
@end ifhtml
@end ifset
+@c ***Old documentation******************************************************
+@ifset oldhtml
+@include install-old.texi
+@html
+</p>
+<hr>
+<p>
+@end html
+@ifhtml
+@uref{./index.html,,Return to the GCC Installation page}
+@end ifhtml
+@end ifset
+
+@c ***GFDL********************************************************************
+@ifset gfdlhtml
+@include fdl.texi
+@html
+</p>
+<hr>
+<p>
+@end html
+@ifhtml
+@uref{./index.html,,Return to the GCC Installation page}
+@end ifhtml
+@end ifset
+
@c ***************************************************************************
@c Part 6 The End of the Document
@ifinfo
@comment node-name, next, previous, up
-@node Concept Index, , Specific, Top
+@node Concept Index, , GNU Free Documentation License, Top
@end ifinfo
@ifinfo
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