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David E. O'Brien 1999-10-03 09:19:40 +00:00
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114
contrib/gcc/genmultilib
View File

@ -1,6 +1,6 @@
#!/bin/sh
# Generates multilib.h.
# Copyright (C) 1994, 1995 Free Software Foundation, Inc.
# Copyright (C) 1994, 1995, 1996, 1997 Free Software Foundation, Inc.
#This file is part of GNU CC.
@ -42,6 +42,12 @@
# appear in the first argument, and the second should be a synonym for
# it. Question marks are replaced with equal signs in both options.
# The optional fourth argument is a list of multilib directory
# combinations that should not be built.
# The optional fifth argument is a list of options that should be
# used whenever building multilib libraries.
# The output looks like
# #define MULTILIB_MATCHES "\
# SUBDIRECTORY OPTIONS;\
@ -59,16 +65,15 @@
# genmultilib "m68000/m68020 msoft-float" "m68000 m68020 msoft-float"
# "m68000=mc68000"
# This produces:
# #define MULTILIB_SELECT "\
# . !m68000 !mc68000 !m68020 !msoft-float;\
# m68000 m68000 !m68020 !msoft-float;\
# m68000 mc60000 !m68020 !msoft-float;\
# m68020 !m68000 !mc68000 m68020 !msoft-float;\
# msoft-float !m68000 !mc68000 !m68020 msoft-float;\
# m68000/msoft-float m68000 !m68020 msoft-float;\
# m68000/msoft-float mc68000 !m68020 msoft-float;\
# m68020/msoft-float !m68000 !mc68000 m68020 msoft-float;\
# "
# ". !m68000 !mc68000 !m68020 !msoft-float;",
# "m68000 m68000 !m68020 !msoft-float;",
# "m68000 mc60000 !m68020 !msoft-float;",
# "m68020 !m68000 !mc68000 m68020 !msoft-float;",
# "msoft-float !m68000 !mc68000 !m68020 msoft-float;",
# "m68000/msoft-float m68000 !m68020 msoft-float;",
# "m68000/msoft-float mc68000 !m68020 msoft-float;",
# "m68020/msoft-float !m68000 !mc68000 m68020 msoft-float;",
#
# The effect is that `gcc -msoft-float' (for example) will append
# msoft-float to the directory name when searching for libraries or
# startup files, and `gcc -m68000 -msoft-float' (for example) will
@ -78,6 +83,10 @@
options=$1
dirnames=$2
matches=$3
exceptions=$4
extra=$5
echo "static char *multilib_raw[] = {"
# What we want to do is select all combinations of the sets in
# options. Each combination which includes a set of mutually
@ -112,6 +121,33 @@ combinations=`initial=/ ./tmpmultilib ${options}`
rm -f tmpmultilib
# If there exceptions, weed them out now
if [ -n "${exceptions}" ]; then
rm -f tmpmultilib2
cat >tmpmultilib2 <<\EOF
#!/bin/sh
# This recursive script weeds out any combination of multilib
# switches that should not be generated. The output looks like
# a list of subdirectory names with leading and trailing slashes.
for opt in $@; do
case "$opt" in
EOF
for except in ${exceptions}; do
echo " /${except}/) : ;;" >> tmpmultilib2
done
cat >>tmpmultilib2 <<\EOF
*) echo ${opt};;
esac
done
EOF
chmod +x tmpmultilib2
combinations=`./tmpmultilib2 ${combinations}`
rm -f ./tmpmultilib2
fi
# Construct a sed pattern which will convert option names to directory
# names.
todirnames=
@ -128,16 +164,6 @@ if [ -n "${dirnames}" ]; then
done
fi
# Construct a sed pattern which will add negations based on the
# matches. The semicolons are easier than getting the shell to accept
# quoted spaces when expanding a variable.
matchnegations=
for i in ${matches}; do
l=`echo $i | sed -e 's/=.*$//' -e 's/?/=/g'`
r=`echo $i | sed -e 's/^.*=//' -e 's/?/=/g'`
matchnegations="${matchnegations} -e s/;!${l};/;!${l};!${r};/"
done
# We need another recursive shell script to correctly handle positive
# matches. If we are invoked as
# genmultilib "opt1 opt2" "" "opt1=nopt1 opt2=nopt2"
@ -154,7 +180,7 @@ cat >tmpmultilib2 <<\EOF
# ${dirout} is the directory name and ${optout} is the current list of
# options.
if [ "$#" = "0" ]; then
echo "${dirout} ${optout};\\"
echo "\"${dirout} ${optout};\","
else
first=$1
shift
@ -169,9 +195,6 @@ fi
EOF
chmod +x tmpmultilib2
# We are ready to start output.
echo '#define MULTILIB_SELECT "\'
# Start with the current directory, which includes only negations.
optout=
for set in ${options}; do
@ -180,10 +203,7 @@ for set in ${options}; do
done
done
optout=`echo ${optout} | sed -e 's/^ //'`
if [ -n "${matchnegations}" ]; then
optout=`echo ";${optout};" | sed -e 's/ /;/g' ${matchnegations} -e 's/^;//' -e 's/;$//' -e 's/;/ /g'`
fi
echo ". ${optout};\\"
echo "\". ${optout};\","
# Work over the list of combinations. We have to translate each one
# to use the directory names rather than the option names, we have to
@ -214,18 +234,36 @@ for combo in ${combinations}; do
done
optout=`echo ${optout} | sed -e 's/^ //'`
# Add any negations of matches.
if [ -n "${matchnegations}" ]; then
optout=`echo ";${optout};" | sed -e 's/ /;/g' ${matchnegations} -e 's/^;//' -e 's/;$//' -e 's/;/ /g'`
fi
# Output the line with all appropriate matches.
dirout="${dirout}" optout="${optout}" ./tmpmultilib2 ${matches}
dirout="${dirout}" optout="${optout}" ./tmpmultilib2
done
# Terminate the list of string.
echo "NULL"
echo "};"
# Output all of the matches now as option and that is the same as that, with
# a semicolon trailer. Include all of the normal options as well.
# Note, the format of the matches is reversed compared
# to what we want, so switch them around.
echo ""
echo "static char *multilib_matches_raw[] = {"
for match in ${matches}; do
l=`echo ${match} | sed -e 's/=.*$//' -e 's/?/=/g'`
r=`echo ${match} | sed -e 's/^.*=//' -e 's/?/=/g'`
echo "\"${r} ${l};\","
done
for set in ${options}; do
for opt in `echo ${set} | sed -e 's|/| |'g`; do
echo "\"${opt} ${opt};\","
done
done
echo "NULL"
echo "};"
# Output the default options now
echo ""
echo "static char *multilib_extra = \"${extra}\";"
rm -f tmpmultilib2
# That's it.
echo '"'
exit 0

507
contrib/gcc/install.texi
View File

@ -1,10 +1,13 @@
@c Copyright (C) 1988, 1989, 1992, 1993, 1994, 1995 Free Software Foundation, Inc.
@c Copyright (C) 1988,89,92,93,94,95,96,97,1998 Free Software Foundation, Inc.
@c This is part of the GCC manual.
@c For copying conditions, see the file gcc.texi.
@c The text of this file appears in the file INSTALL
@c in the GCC distribution, as well as in the GCC manual.
Note most of this information is out of date and superceded by the EGCS
install procedures. It is provided for historical reference only.
@ifclear INSTALLONLY
@node Installation
@chapter Installing GNU CC
@ -64,14 +67,14 @@ to specify a configuration when building a native compiler unless
wrong.
In those cases, specify the build machine's @dfn{configuration name}
with the @samp{--build} option; the host and target will default to be
the same as the build machine. (If you are building a cross-compiler,
with the @samp{--host} option; the host and target will default to be
the same as the host machine. (If you are building a cross-compiler,
see @ref{Cross-Compiler}.)
Here is an example:
@smallexample
./configure --build=sparc-sun-sunos4.1
./configure --host=sparc-sun-sunos4.1
@end smallexample
A configuration name may be canonical or it may be more or less
@ -87,8 +90,7 @@ You can also replace parts of the configuration by nicknames or aliases.
For example, @samp{sun3} stands for @samp{m68k-sun}, so
@samp{sun3-sunos4.1} is another way to specify a Sun 3. You can also
use simply @samp{sun3-sunos}, since the version of SunOS is assumed by
default to be version 4. @samp{sun3-bsd} also works, since
@file{configure} knows that the only BSD variant on a Sun 3 is SunOS.
default to be version 4.
You can specify a version number after any of the system types, and some
of the CPU types. In most cases, the version is irrelevant, and will be
@ -98,7 +100,7 @@ See @ref{Configurations}, for a list of supported configuration names and
notes on many of the configurations. You should check the notes in that
section before proceeding any further with the installation of GNU CC.
There are four additional options you can specify independently to
There are four additional options you can specify independently to
describe variant hardware and software configurations. These are
@samp{--with-gnu-as}, @samp{--with-gnu-ld}, @samp{--with-stabs} and
@samp{--nfp}.
@ -122,10 +124,11 @@ using, try specifying @samp{-v} when you run it.
The systems where it makes a difference whether you use GAS are@*
@samp{hppa1.0-@var{any}-@var{any}}, @samp{hppa1.1-@var{any}-@var{any}},
@samp{i386-@var{any}-sysv}, @samp{i386-@var{any}-isc},@*
@samp{i860-@var{any}-bsd}, @samp{m68k-bull-sysv}, @samp{m68k-hp-hpux},
@samp{m68k-sony-bsd},@*
@samp{m68k-altos-sysv}, @samp{m68000-hp-hpux}, @samp{m68000-att-sysv},
@samp{@var{any}-lynx-lynxos}, and @samp{mips-@var{any}}).
@samp{i860-@var{any}-bsd}, @samp{m68k-bull-sysv},@*
@samp{m68k-hp-hpux}, @samp{m68k-sony-bsd},@*
@samp{m68k-altos-sysv}, @samp{m68000-hp-hpux},@*
@samp{m68000-att-sysv}, @samp{@var{any}-lynx-lynxos},
and @samp{mips-@var{any}}).
On any other system, @samp{--with-gnu-as} has no effect.
On the systems listed above (except for the HP-PA, for ISC on the
@ -138,9 +141,9 @@ linker with GNU CC.
This option does not cause the GNU linker to be installed; it just
modifies the behavior of GNU CC to work with the GNU linker.
Specifically, it inhibits the installation of @code{collect2}, a program
which otherwise serves as a front-end for the system's linker on most
configurations.
@c Specifically, it inhibits the installation of @code{collect2}, a program
@c which otherwise serves as a front-end for the system's linker on most
@c configurations.
@item --with-stabs
On MIPS based systems and on Alphas, you must specify whether you want
@ -175,6 +178,35 @@ point unit. These systems include @samp{m68k-sun-sunos@var{n}} and
@samp{m68k-isi-bsd}. On any other system, @samp{--nfp} currently has no
effect, though perhaps there are other systems where it could usefully
make a difference.
@cindex Haifa scheduler
@cindex scheduler, experimental
@item --enable-haifa
@itemx --disable-haifa
Use @samp{--enable-haifa} to enable use of an experimental instruction
scheduler (from IBM Haifa). This may or may not produce better code.
Some targets on which it is known to be a win enable it by default; use
@samp{--disable-haifa} to disable it in these cases. @code{configure}
will print out whether the Haifa scheduler is enabled when it is run.
@cindex Objective C threads
@cindex threads, Objective C
@item --enable-threads=@var{type}
Certain systems, notably Linux-based GNU systems, can't be relied on to
supply a threads facility for the Objective C runtime and so will
default to single-threaded runtime. They may, however, have a library
threads implementation available, in which case threads can be enabled
with this option by supplying a suitable @var{type}, probably
@samp{posix}. The possibilities for @var{type} are @samp{single},
@samp{posix}, @samp{win32}, @samp{solaris}, @samp{irix} and @samp{mach}.
@cindex Internal Compiler Checking
@item --enable-checking
When you specify this option, the compiler is built to perform checking
of tree node types when referencing fields of that node. 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.
@end table
The @file{configure} script searches subdirectories of the source
@ -237,24 +269,41 @@ If you want to install its files somewhere else, specify
is a directory name to use instead of @file{/usr/local} for all purposes
with one exception: the directory @file{/usr/local/include} is searched
for header files no matter where you install the compiler. To override
this name, use the @code{--local-prefix} option below.
this name, use the @code{--with-local-prefix} option below. The directory
you specify need not exist, but its parent directory must exist.
@item
Specify @samp{--local-prefix=@var{dir}} if you want the compiler to
Specify @samp{--with-local-prefix=@var{dir}} if you want the compiler to
search directory @file{@var{dir}/include} for locally installed header
files @emph{instead} of @file{/usr/local/include}.
You should specify @samp{--local-prefix} @strong{only} if your site has
You should specify @samp{--with-local-prefix} @strong{only} if your site has
a different convention (not @file{/usr/local}) for where to put
site-specific files.
@strong{Do not} specify @file{/usr} as the @samp{--local-prefix}! The
directory you use for @samp{--local-prefix} @strong{must not} contain
The default value for @samp{--with-local-prefix} is @file{/usr/local}
regardless of the value of @samp{--prefix}. Specifying @samp{--prefix}
has no effect on which directory GNU CC searches for local header files.
This may seem counterintuitive, but actually it is logical.
The purpose of @samp{--prefix} is to specify where to @emph{install GNU
CC}. The local header files in @file{/usr/local/include}---if you put
any in that directory---are not part of GNU CC. They are part of other
programs---perhaps many others. (GNU CC installs its own header files
in another directory which is based on the @samp{--prefix} value.)
@strong{Do not} specify @file{/usr} as the @samp{--with-local-prefix}! The
directory you use for @samp{--with-local-prefix} @strong{must not} contain
any of the system's standard header files. If it did contain them,
certain programs would be miscompiled (including GNU Emacs, on certain
targets), because this would override and nullify the header file
corrections made by the @code{fixincludes} script.
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 GNU CC. Perhaps they make this assumption
because installing GNU CC creates the directory.
@cindex Bison parser generator
@cindex parser generator, Bison
@item
@ -300,8 +349,9 @@ Ignore any warnings you may see about ``statement not reached'' in
escape sequence'' are normal in @file{genopinit.c} and perhaps some
other files. Likewise, you should ignore warnings about ``constant is
so large that it is unsigned'' in @file{insn-emit.c} and
@file{insn-recog.c} and a warning about a comparison always being zero
in @file{enquire.o}. Any other compilation errors may represent bugs in
@file{insn-recog.c}, a warning about a comparison always being zero
in @file{enquire.o}, and warnings about shift counts exceeding type
widths in @file{cexp.y}. Any other compilation errors may represent bugs in
the port to your machine or operating system, and
@ifclear INSTALLONLY
should be investigated and reported (@pxref{Bugs}).
@ -383,7 +433,7 @@ linker) in the @file{stage2} subdirectory as you did in the
@smallexample
make stage2
make CC="stage2/xgcc -Bstage2/" CFLAGS="-g -O2"
make CC="stage2/xgcc -Bstage2/" CFLAGS="-g -O2"
@end smallexample
@noindent
@ -467,19 +517,22 @@ This copies the files @file{cc1}, @file{cpp} and @file{libgcc.a} to
files @file{cc1}, @file{cpp} and @file{libgcc.a} in the directory
@file{/usr/local/lib/gcc-lib/@var{target}/@var{version}}, which is where
the compiler driver program looks for them. Here @var{target} is the
target machine type specified when you ran @file{configure}, and
@var{version} is the version number of GNU CC. This naming scheme
permits various versions and/or cross-compilers to coexist.
canonicalized form of target machine type specified when you ran
@file{configure}, and @var{version} is the version number of GNU CC.
This naming scheme permits various versions and/or cross-compilers to
coexist. It also copies the executables for compilers for other
languages (e.g., @file{cc1plus} for C++) to the same directory.
This also copies the driver program @file{xgcc} into
@file{/usr/local/bin/gcc}, so that it appears in typical execution
search paths.
search paths. It also copies @file{gcc.1} into
@file{/usr/local/man/man1} and info pages into @file{/usr/local/info}.
On some systems, this command causes recompilation of some files. This
is usually due to bugs in @code{make}. You should either ignore this
problem, or use GNU Make.
@cindex @code{alloca} and SunOs
@cindex @code{alloca} and SunOS
@strong{Warning: there is a bug in @code{alloca} in the Sun library. To
avoid this bug, be sure to install the executables of GNU CC that were
compiled by GNU CC. (That is, the executables from stage 2 or 3, not
@ -491,12 +544,103 @@ since they usually run faster than the ones compiled with some other
compiler.)
@item
@cindex C++ runtime library
@cindex @code{libstdc++}
If you're going to use C++, it's likely that you need to also install
the libg++ distribution. It should be available from the same
place where you got the GNU C distribution. Just as GNU C does not
distribute a C runtime library, it also does not include a C++ run-time
a C++ runtime library. Just as GNU C does not
distribute a C runtime library, it also does not include a C++ runtime
library. All I/O functionality, special class libraries, etc., are
available in the libg++ distribution.
provided by the C++ runtime library.
The standard C++ runtime library for GNU CC is called @samp{libstdc++}.
An obsolescent library @samp{libg++} may also be available, but it's
necessary only for older software that hasn't been converted yet; if
you don't know whether you need @samp{libg++} then you probably don't
need it.
Here's one way to build and install @samp{libstdc++} for GNU CC:
@itemize @bullet
@item
Build and install GNU CC, so that invoking @samp{gcc} obtains the GNU CC
that was just built.
@item
Obtain a copy of a compatible @samp{libstdc++} distribution. For
example, the @samp{libstdc++-2.8.0.tar.gz} distribution should be
compatible with GCC 2.8.0. GCC distributors normally distribute
@samp{libstdc++} as well.
@item
Set the @samp{CXX} environment variable to @samp{gcc} while running the
@samp{libstdc++} distribution's @file{configure} command. Use the same
@file{configure} options that you used when you invoked GCC's
@file{configure} command.
@item
Invoke @samp{make} to build the C++ runtime.
@item
Invoke @samp{make install} to install the C++ runtime.
@end itemize
To summarize, after building and installing GNU CC, invoke the following
shell commands in the topmost directory of the C++ library distribution.
For @var{configure-options}, use the same options that
you used to configure GNU CC.
@example
$ CXX=gcc ./configure @var{configure-options}
$ make
$ make install
@end example
@item
GNU CC includes a runtime library for Objective-C because it is an
integral part of the language. You can find the files associated with
the library in the subdirectory @file{objc}. The GNU Objective-C
Runtime Library requires header files for the target's C library in
order to be compiled,and also requires the header files for the target's
thread library if you want thread support. @xref{Cross Headers,
Cross-Compilers and Header Files, Cross-Compilers and Header Files}, for
discussion about header files issues for cross-compilation.
When you run @file{configure}, it picks the appropriate Objective-C
thread implementation file for the target platform. In some situations,
you may wish to choose a different back-end as some platforms support
multiple thread implementations or you may wish to disable thread
support completely. You do this by specifying a value for the
@var{OBJC_THREAD_FILE} makefile variable on the command line when you
run make, for example:
@smallexample
make CC="stage2/xgcc -Bstage2/" CFLAGS="-g -O2" OBJC_THREAD_FILE=thr-single
@end smallexample
@noindent
Below is a list of the currently available back-ends.
@itemize @bullet
@item thr-single
Disable thread support, should work for all platforms.
@item thr-decosf1
DEC OSF/1 thread support.
@item thr-irix
SGI IRIX thread support.
@item thr-mach
Generic MACH thread support, known to work on NEXTSTEP.
@item thr-os2
IBM OS/2 thread support.
@item thr-posix
Generix POSIX thread support.
@item thr-pthreads
PCThreads on Linux-based GNU systems.
@item thr-solaris
SUN Solaris thread support.
@item thr-win32
Microsoft Win32 API thread support.
@end itemize
@end enumerate
@node Configurations
@ -508,7 +652,7 @@ Here are the possible CPU types:
@quotation
@c gmicro, alliant, spur and tahoe omitted since they don't work.
1750a, a29k, alpha, arm, c@var{n}, clipper, dsp16xx, elxsi, h8300,
hppa1.0, hppa1.1, i370, i386, i486, i586, i860, i960, m68000, m68k,
hppa1.0, hppa1.1, i370, i386, i486, i586, i860, i960, m32r, m68000, m68k,
m88k, mips, mipsel, mips64, mips64el, ns32k, powerpc, powerpcle,
pyramid, romp, rs6000, sh, sparc, sparclite, sparc64, vax, we32k.
@end quotation
@ -518,7 +662,7 @@ abbreviations are used rather than the longer official names.
@c What should be done about merlin, tek*, dolphin?
@quotation
acorn, alliant, altos, apollo, att, bull,
acorn, alliant, altos, apollo, apple, att, bull,
cbm, convergent, convex, crds, dec, dg, dolphin,
elxsi, encore, harris, hitachi, hp, ibm, intergraph, isi,
mips, motorola, ncr, next, ns, omron, plexus,
@ -533,8 +677,8 @@ just @samp{@var{cpu}-@var{system}}, if it is not needed. For example,
Here is a list of system types:
@quotation
386bsd, aix, acis, amigados, aos, aout, bosx, bsd, clix, coff, ctix, cxux,
dgux, dynix, ebmon, ecoff, elf, esix, freebsd, hms, genix, gnu, gnu/linux,
386bsd, aix, acis, amigaos, aos, aout, aux, bosx, bsd, clix, coff, ctix, cxux,
dgux, dynix, ebmon, ecoff, elf, esix, freebsd, hms, genix, gnu, linux-gnu,
hiux, hpux, iris, irix, isc, luna, lynxos, mach, minix, msdos, mvs,
netbsd, newsos, nindy, ns, osf, osfrose, ptx, riscix, riscos, rtu, sco, sim,
solaris, sunos, sym, sysv, udi, ultrix, unicos, uniplus, unos, vms, vsta,
@ -577,15 +721,15 @@ mmax, news-3600, news800, news, next,
pbd, pc532, pmax, powerpc, powerpcle, ps2, risc-news,
rtpc, sun2, sun386i, sun386, sun3,
sun4, symmetry, tower-32, tower.
@end quotation
@end quotation
@noindent
Remember that a machine name specifies both the cpu type and the company
name.
If you want to install your own homemade configuration files, you can
use @samp{local} as the company name to access them. If you use
use @samp{local} as the company name to access them. If you use
configuration @samp{@var{cpu}-local}, the configuration name
without the cpu prefix
without the cpu prefix
is used to form the configuration file names.
Thus, if you specify @samp{m68k-local}, configuration uses
@ -600,11 +744,11 @@ things you must know:
@item 1750a-*-*
MIL-STD-1750A processors.
Starting with GCC 2.6.1, the MIL-STD-1750A cross configuration no longer
supports the Tektronix Assembler, but instead produces output for
The MIL-STD-1750A cross configuration produces output for
@code{as1750}, an assembler/linker available under the GNU Public
License for the 1750A. Contact @emph{kellogg@@space.otn.dasa.de} for more
details on obtaining @samp{as1750}. A similarly licensed simulator for
License for the 1750A. @code{as1750} can be obtained at
@emph{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
@ -638,8 +782,7 @@ GNU CC.
@item alpha-*-osf1
Systems using processors that implement the DEC Alpha architecture and
are running the DEC Unix (OSF/1) operating system, for example the DEC
Alpha AXP systems. (VMS on the Alpha is not currently supported by GNU
CC.)
Alpha AXP systems.CC.)
GNU CC 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
@ -683,29 +826,44 @@ To avoid this behavior, specify @samp{-gstabs+} and use GDB instead of
DBX. DEC is now aware of this problem with the assembler and hopes to
provide a fix shortly.
@item arm
@item arc-*-elf
Argonaut ARC processor.
This configuration is intended for embedded systems.
@item arm-*-aout
Advanced RISC Machines ARM-family processors. These are often used in
embedded applications. There are no standard Unix configurations.
This configuration corresponds to the basic instruction sequences and will
produce a.out format object modules.
produce @file{a.out} format object modules.
You may need to make a variant of the file @file{arm.h} for your particular
configuration.
@item arm-*-linuxaout
Any of the ARM family processors running the Linux-based GNU system with
the @file{a.out} binary format (ELF is not yet supported). You must use
version 2.8.1.0.7 or later of the GNU/Linux binutils, which you can download
from @file{sunsite.unc.edu:/pub/Linux/GCC} and other mirror sites for
Linux-based GNU systems.
@item arm-*-riscix
The ARM2 or ARM3 processor running RISC iX, Acorn's port of BSD Unix. 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 information; a
new version of the assembler, with stabs support included, is now
available from Acorn.
The ARM2 or ARM3 processor running RISC iX, Acorn's port of BSD Unix.
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
information; a new version of the assembler, with stabs support
included, is now available from Acorn and via ftp
@file{ftp.acorn.com:/pub/riscix/as+xterm.tar.Z}. To enable stabs
debugging, pass @samp{--with-gnu-as} to configure.
You will need to install GNU @file{sed} before you can run configure.
@item 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.
and is compatible with other 29k tools.
You may need to make a variant of the file @file{a29k.h} for your
particular configuration.
@ -714,9 +872,10 @@ particular configuration.
AMD Am29050 used in a system running a variant of BSD Unix.
@item decstation-*
DECstations can support three different personalities: Ultrix,
DEC OSF/1, and OSF/rose. To configure GCC for these platforms
use the following configurations:
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 decstation-ultrix
@ -772,11 +931,13 @@ output from GNU CC.
@end ignore
@item h8300-*-*
Hitachi H8/300 series of processors.
The calling convention and structure layout has changed in release 2.6.
All code must be recompiled. The calling convention now passes the
first three arguments in function calls in registers. Structures are no
longer a multiple of 2 bytes.
@item hppa*-*-*
There are several variants of the HP-PA processor which run a variety
of operating systems. GNU CC must be configured to use the correct
@ -791,9 +952,11 @@ will work if you also use GAS and GDB in conjunction with GCC. We
highly recommend using GAS for all HP-PA configurations.
You should be using GAS-2.6 (or later) along with GDB-4.16 (or later). These
can be retrieved from all the traditional GNU ftp archive sites.
can be retrieved from all the traditional GNU ftp archive sites.
GAS will need to be installed into a directory before @code{/bin},
On some versions of HP-UX, you will need to install GNU @file{sed}.
You will need to be install GAS into a directory before @code{/bin},
@code{/usr/bin}, and @code{/usr/ccs/bin} in your search path. You
should install GAS before you build GNU CC.
@ -804,25 +967,19 @@ option before building.
This port is very preliminary and has many known bugs. We hope to
have a higher-quality port for this machine soon.
@item i386-*-linuxoldld
Use this configuration to generate 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.
@item i386-*-linux-gnuoldld
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.
@item i386-*-linuxaout
Use this configuration to generate a.out binaries on Linux-based GNU
systems. This configuration is being superseded. You must use
@item i386-*-linux-gnuaout
Use this configuration to generate @file{a.out} binaries on Linux-based
GNU systems. This configuration is being superseded. You must use
gas/binutils version 2.5.2 or later.
@item i386-*-linux-gnulibc1
@item i386-*-linux-gnu
Use this configuration to generate ELF binaries on Linux-based GNU
systems using the Linux libc version 5. You must use gas/binutils
version 2.5.2 or later.
@item i386-*-linux
Use this configuration to generate ELF binaries on Linux-based GNU
systems using glibc 2. You must use gas/binutils version 2.8.1 or
later.
systems. You must use gas/binutils version 2.5.2 or later.
@item i386-*-sco
Compilation with RCC is recommended. Also, it may be a good idea to
@ -831,6 +988,33 @@ link with GNU malloc instead of the malloc that comes with the system.
@item i386-*-sco3.2v4
Use this configuration for SCO release 3.2 version 4.
@item i386-*-sco3.2v5*
Use this for the SCO OpenServer Release family including 5.0.0, 5.0.2,
5.0.4, 5.0.5, Internet FastStart 1.0, and Internet FastStart 1.1.
GNU CC can generate COFF binaries if you specify @samp{-mcoff} or ELF
binaries, the default. A full @samp{make bootstrap} is recommended
so that an ELF compiler that builds ELF is generated.
You must have TLS597 from @uref{ftp://ftp.sco.com/TLS} installed for ELF
C++ binaries to work correctly on releases before 5.0.4.
The native SCO assembler that is provided with the OS at no charge
is normally required. If, however, you must be able to use the GNU
assembler (perhaps you have complex asms) you must configure this
package @samp{--with-gnu-as}. To do this, install (cp or symlink)
gcc/as to your copy of the GNU assembler. You must use a recent version
of GNU binutils; version 2.9.1 seems to work well. If you select this
option, you will be unable to build COFF images. Trying to do so will
result in non-obvious failures. In general, the "--with-gnu-as" option
isn't as well tested as the native assembler.
@emph{NOTE:} If you are building C++, you must follow the instructions
about invoking @samp{make bootstrap} because the native OpenServer
compiler may build a @file{cc1plus} that will not correctly parse many
valid C++ programs. You must do a @samp{make bootstrap} if you are
building with the native compiler.
@item i386-*-isc
It may be a good idea to link with GNU malloc instead of the malloc that
comes with the system.
@ -843,19 +1027,15 @@ It may be good idea to link with GNU malloc instead of the malloc that
comes with the system.
@item i386-ibm-aix
You need to use GAS version 2.1 or later, and and LD from
You need to use GAS version 2.1 or later, and LD from
GNU binutils version 2.2 or later.
@item i386-sequent-bsd
Go to the Berkeley universe before compiling. In addition, you probably
need to create a file named @file{string.h} containing just one line:
@samp{#include <strings.h>}.
Go to the Berkeley universe before compiling.
@item i386-sequent-ptx1*
Sequent DYNIX/ptx 1.x.
@item i386-sequent-ptx2*
Sequent DYNIX/ptx 2.x.
@itemx i386-sequent-ptx2*
You must install GNU @file{sed} before running @file{configure}.
@item i386-sun-sunos4
You may find that you need another version of GNU CC to begin
@ -868,7 +1048,7 @@ See @ref{Sun Install}, for information on installing GNU CC on Sun
systems.
@item i[345]86-*-winnt3.5
This version requires a GAS that has not let been released. Until it
This version requires a GAS that has not yet been released. Until it
is, you can get a prebuilt binary version via anonymous ftp from
@file{cs.washington.edu:pub/gnat} or @file{cs.nyu.edu:pub/gnat}. You
must also use the Microsoft header files from the Windows NT 3.5 SDK.
@ -933,30 +1113,35 @@ LynxOS 2.2 and earlier comes with GNU CC 1.x already installed as
You can tell GNU CC 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
installed tools, which produce a.out format executables.
installed tools, which produce @file{a.out} format executables.
@item m32r-*-elf
Mitsubishi M32R processor.
This configuration is intended for embedded systems.
@item m68000-hp-bsd
HP 9000 series 200 running BSD. Note that the C compiler that comes
with this system cannot compile GNU CC; contact @code{law@@cs.utah.edu}
with this system cannot compile GNU CC; contact @code{law@@cygnus.com}
to get binaries of GNU CC for bootstrapping.
@item m68k-*-linuxaout
Use this configuration to generate a.out binaries on Linux. This configuration
is being superseded. You must use gas/binutils version 2.5.2 or later.
@item m68k-*-linux-gnulibc1
Use this configuration to generate ELF binaries on Linux with the
Linux C library 5.x.x. You must use gas/binutils version 2.8.1 later.
@item m68k-*-linux
Use this configuration to generate ELF binaries on Linux-based GNU
systems with the GNU C library 2. You must use gas/binutils version
2.8.1 or later.
@item 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}.
@item m68k-apple-aux
Apple Macintosh running A/UX.
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 @samp{--with-gnu-as} and @samp{--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
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.
@item m68k-att-sysv
AT&T 3b1, a.k.a. 7300 PC. Special procedures are needed to compile GNU
CC with this machine's standard C compiler, due to bugs in that
@ -969,7 +1154,7 @@ the following procedure might work. We are unable to test it.
@enumerate
@item
Comment out the @samp{#include "config.h"} line on line 37 of
Comment out the @samp{#include "config.h"} line near the start of
@file{cccp.c} and do @samp{make cpp}. This makes a preliminary version
of GNU cpp.
@ -1001,12 +1186,12 @@ fashion.
@end enumerate
@item m68k-bull-sysv
Bull DPX/2 series 200 and 300 with BOS-2.00.45 up to BOS-2.01. GNU CC works
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 @samp{--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
assembler or for availability of the DPX/2 port of GAS, contact
by providing @samp{--with-gnu-as --stabs}. For any problem with native
assembler or for availability of the DPX/2 port of GAS, contact
@code{F.Pierresteguy@@frcl.bull.fr}.
@item m68k-crds-unox
@ -1053,8 +1238,8 @@ PHCO_4484 from HP.
In addition, if you wish to use gas @samp{--with-gnu-as} 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
kept up to date. gdb does not understand that native HP/UX format, so
gas output into the native HP-UX format, but that program has not been
kept up to date. gdb does not understand that native HP-UX format, so
you must use gas if you wish to use gdb.
@item m68k-sun
@ -1203,7 +1388,7 @@ 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 @samp{--with-gnu-as} configure option when configuring gcc.
GNU as is distributed as part of the binutils package.
GNU as is distributed as part of the binutils package.
@item mips-sony-sysv
Sony MIPS NEWS. This works in NEWSOS 5.0.1, but not in 5.0.2 (which
@ -1220,9 +1405,7 @@ and @code{malloc}; you must get the compiled versions of these from GNU
Emacs.
@item ns32k-sequent
Go to the Berkeley universe before compiling. In addition, you probably
need to create a file named @file{string.h} containing just one line:
@samp{#include <strings.h>}.
Go to the Berkeley universe before compiling.
@item ns32k-utek
UTEK ns32000 system (``merlin''). The C compiler that comes with this
@ -1248,12 +1431,14 @@ stage3 object files, and errors when compiling @file{libgcc.a} or
xlc-1.3.0.0 (distributed with AIX 3.2.5), and xlc-1.3.0.19. Both
xlc-1.2.1.28 and xlc-1.3.0.24 (PTF 432238) are known to produce working
versions of GNU CC, but most other recent releases correctly bootstrap
GNU CC. Also, releases of AIX prior to AIX 3.2.4 include a version of
GNU CC.
Release 4.3.0 of AIX and ones prior to AIX 3.2.4 include a version of
the IBM assembler which does not accept debugging directives: assembler
updates are available as PTFs. Also, if you are using AIX 3.2.5 or
greater and the GNU assembler, you must have a version modified after
October 16th, 1995 in order for the GNU C compiler to build. See the
file @file{README.RS6000} for more details on of these problems.
file @file{README.RS6000} for more details on any of these problems.
GNU CC does not yet support the 64-bit PowerPC instructions.
@ -1277,46 +1462,77 @@ variable and function declarations in the original program. The warnings
should not prevent the linker from producing a correct library or runnable
executable.
By default, AIX 4.1 produces code that can be used on either Power or
PowerPC processors.
You can specify a default version for the @samp{-mcpu=}@var{cpu_type}
switch by using the configure option @samp{--with-cpu-}@var{cpu_type}.
@item powerpc-*-elf
@itemx powerpc-*-sysv4
PowerPC system in big endian mode, running System V.4.
This configuration is currently under development.
You can specify a default version for the @samp{-mcpu=}@var{cpu_type}
switch by using the configure option @samp{--with-cpu-}@var{cpu_type}.
@item powerpc-*-linux-gnu
PowerPC system in big endian mode, running the Linux-based GNU system.
You can specify a default version for the @samp{-mcpu=}@var{cpu_type}
switch by using the configure option @samp{--with-cpu-}@var{cpu_type}.
@item powerpc-*-eabiaix
Embedded PowerPC system in big endian mode with -mcall-aix selected as
the default. This system is currently under development.
the default.
You can specify a default version for the @samp{-mcpu=}@var{cpu_type}
switch by using the configure option @samp{--with-cpu-}@var{cpu_type}.
@item powerpc-*-eabisim
Embedded PowerPC system in big endian mode for use in running under the
PSIM simulator. This system is currently under development.
PSIM simulator.
You can specify a default version for the @samp{-mcpu=}@var{cpu_type}
switch by using the configure option @samp{--with-cpu-}@var{cpu_type}.
@item powerpc-*-eabi
Embedded PowerPC system in big endian mode.
This configuration is currently under development.
You can specify a default version for the @samp{-mcpu=}@var{cpu_type}
switch by using the configure option @samp{--with-cpu-}@var{cpu_type}.
@item powerpcle-*-elf
@itemx powerpcle-*-sysv4
PowerPC system in little endian mode, running System V.4.
This configuration is currently under development.
You can specify a default version for the @samp{-mcpu=}@var{cpu_type}
switch by using the configure option @samp{--with-cpu-}@var{cpu_type}.
@itemx powerpcle-*-sysv4
Embedded PowerPC system in little endian mode.
@item powerpcle-*-solaris2*
PowerPC system in little endian mode, running Solaris 2.5.1 or higher.
This system is currently under development.
You can specify a default version for the @samp{-mcpu=}@var{cpu_type}
switch by using the configure option @samp{--with-cpu-}@var{cpu_type}.
Beta versions of the Sun 4.0 compiler do not seem to be able to build
GNU CC correctly. There are also problems with the host assembler and
linker that are fixed by using the GNU versions of these tools.
@item powerpcle-*-eabisim
Embedded PowerPC system in little endian mode for use in running under
the PSIM simulator.
This system is currently under development.
@itemx powerpcle-*-eabi
Embedded PowerPC system in little endian mode.
This configuration is currently under development.
You can specify a default version for the @samp{-mcpu=}@var{cpu_type}
switch by using the configure option @samp{--with-cpu-}@var{cpu_type}.
@item powerpcle-*-winnt
@itemx powerpcle-*-pe
PowerPC system in little endian mode running Windows NT.
You can specify a default version for the @samp{-mcpu=}@var{cpu_type}
switch by using the configure option @samp{--with-cpu-}@var{cpu_type}.
@item vax-dec-ultrix
Don't try compiling with Vax C (@code{vcc}). It produces incorrect code
@ -1324,7 +1540,7 @@ 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
problem, compile just the GNU C compiler first, and use it to recompile
building all the languages that you want to run.
@item sparc-sun-*
@ -1348,23 +1564,23 @@ in GNU CC. You can work around this by building @file{cpp} in GNU CC
first, then use that instead of the system's preprocessor with the
system's C compiler to compile @file{stmt.c}. Here is how:
@example
@smallexample
mv /lib/cpp /lib/cpp.att
cp cpp /lib/cpp.gnu
echo '/lib/cpp.gnu -traditional $@{1+"$@@"@}' > /lib/cpp
chmod +x /lib/cpp
@end example
@end smallexample
The system's compiler produces bad code for some of the GNU CC
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:
@example
@smallexample
make LANGUAGES=c CC=stage1/xgcc CFLAGS="-Bstage1/ -g"
make stage2
make CC=stage2/xgcc CFLAGS="-Bstage2/ -g -O"
@end example
@end smallexample
You may need to raise the ULIMIT setting to build a C++ compiler,
as the file @file{cc1plus} is larger than one megabyte.
@ -1451,7 +1667,7 @@ have not all been made to work. GNU CC now has a floating point
emulator with which these can work, but each target machine description
needs to be updated to take advantage of it.
@item
@item
Cross-compilation between machines of different word sizes is
somewhat problematic and sometimes does not work.
@end itemize
@ -1553,7 +1769,7 @@ supports.
If you want to install libraries to use with the cross-compiler, such as
a standard C library, put them in the directory
@file{/usr/local/@var{target}/lib}; installation of GNU CC copies all
@file{/usr/local/@var{target}/lib}; installation of GNU CC copies
all the files in that subdirectory into the proper place for GNU CC to
find them and link with them. Here's an example of copying some
libraries from a target machine:
@ -1616,7 +1832,7 @@ library @file{libgcc1.a} that does the job it is expected to do.
To compile @file{libgcc1.c} with the cross-compiler itself does not
work. The functions in this file are supposed to implement arithmetic
operations that GNU CC does not know how to open code for your target
machine. If these functions are compiled with GNU CC itself, they
machine. If these functions are compiled with GNU CC itself, they
will compile into infinite recursion.
On any given target, most of these functions are not needed. If GNU CC
@ -1630,13 +1846,13 @@ If you are linking with a library that contains functions for
multiplication and division, you can tell GNU CC to call them directly
by defining the macros @code{MULSI3_LIBCALL}, and the like. These
macros need to be defined in the target description macro file. For
some targets, they are defined already. This may be sufficient to
some targets, they are defined already. This may be sufficient to
avoid the need for libgcc1.a; if so, you can supply an empty library.
Some targets do not have floating point instructions; they need other
functions in @file{libgcc1.a}, which do floating arithmetic.
Recent versions of GNU CC have a file which emulates floating point.
With a certain amount of work, you should be able to construct a
With a certain amount of work, you should be able to construct a
floating point emulator that can be used as @file{libgcc1.a}. Perhaps
future versions will contain code to do this automatically and
conveniently. That depends on whether someone wants to implement it.
@ -1708,7 +1924,7 @@ machine, the cross-compiler can use them also.
Otherwise, you're on your own in finding header files to use when
cross-compiling.
When you have found suitable header files, put them in
When you have found suitable header files, put them in the directory
@file{/usr/local/@var{target}/include}, before building the cross
compiler. Then installation will run fixincludes properly and install
the corrected versions of the header files where the compiler will use
@ -1774,16 +1990,20 @@ To install the cross-compiler, use @samp{make install}, as usual.
@cindex Sun installation
@cindex installing GNU CC on the Sun
On Solaris (version 2.1), do not use the linker or other tools in
On Solaris, do not use the linker or other tools in
@file{/usr/ucb} to build GNU CC. Use @code{/usr/ccs/bin}.
If the assembler reports @samp{Error: misaligned data} when bootstrapping,
you are probably using an obsolete version of the GNU assembler. Upgrade
to the latest version of GNU @code{binutils}, or use the Solaris assembler.
Make sure the environment variable @code{FLOAT_OPTION} is not set when
you compile @file{libgcc.a}. If this option were set to @code{f68881}
when @file{libgcc.a} is compiled, the resulting code would demand to be
linked with a special startup file and would not link properly without
special pains.
@cindex @code{alloca}, for SunOs
@cindex @code{alloca}, for SunOS
There is a bug in @code{alloca} in certain versions of the Sun library.
To avoid this bug, install the binaries of GNU CC that were compiled by
GNU CC. They use @code{alloca} as a built-in function and never the one
@ -1798,6 +2018,12 @@ it by using the following command to compile GNU CC with Sun CC:
make CC="TERMCAP=x OBJS=x LIBFUNCS=x STAGESTUFF=x cc"
@end example
SunOS 4.1.3 and 4.1.3_U1 have bugs that can cause intermittent core
dumps when compiling GNU CC. A common symptom is an
internal compiler error which does not recur if you run it again.
To fix the problem, install Sun recommended patch 100726 (for SunOS 4.1.3)
or 101508 (for SunOS 4.1.3_U1), or upgrade to a later SunOS release.
@node VMS Install
@section Installing GNU CC on VMS
@cindex VMS installation
@ -1868,8 +2094,8 @@ $ assign /system /translation=concealed -
@noindent
with the appropriate disk and directory name. If you are going to be
using libg++, this is where the libg++ install procedure will install
the libg++ header files.
using a C++ runtime library, this is where its install procedure will install
its header files.
@item
Obtain the file @file{gcc-cc1plus.exe}, and place this in the same
@ -2046,11 +2272,8 @@ available.
@node Collect2
@section @code{collect2}
Many target systems do not have support in the assembler and linker for
``constructors''---initialization functions to be called before the
official ``start'' of @code{main}. On such systems, GNU CC uses a
utility called @code{collect2} to arrange to call these functions at
start time.
GNU CC uses a utility called @code{collect2} on nearly all systems to arrange
to call various initialization functions at start time.
The program @code{collect2} works by linking the program once and
looking through the linker output file for symbols with particular names
@ -2141,7 +2364,7 @@ are already suitable for ANSI C and GNU CC, nothing special need be
done).
@code{GPLUS_INCLUDE_DIR} means the same thing for native and cross. It
is where @code{g++} looks first for header files. @code{libg++}
is where @code{g++} looks first for header files. The C++ library
installs only target independent header files in that directory.
@code{LOCAL_INCLUDE_DIR} is used only for a native compiler. It is