install

gcc库的原代码,对编程有很大帮助.

     DBX.  DEC is now aware of this problem with the assembler and
     hopes to provide a fix shortly.

`arm'
     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.

     You may need to make a variant of the file `arm.h' for your
     particular configuration.

`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.

`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.

     You may need to make a variant of the file `a29k.h' for your
     particular configuration.

`a29k-*-bsd'
     AMD Am29050 used in a system running a variant of BSD Unix.

`decstation-*'
     DECstations can support three different personalities: Ultrix, DEC
     OSF/1, and OSF/rose.  To configure GCC for these platforms use the
     following configurations:

    `decstation-ultrix'
          Ultrix configuration.

    `decstation-osf1'
          Dec's version of OSF/1.

    `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.

     The MIPS C compiler needs to be told to increase its table size
     for switch statements with the `-Wf,-XNg1500' option in order to
     compile `cp/parse.c'.  If you use the `-O2' optimization option,
     you also need to use `-Olimit 3000'.  Both of these options are
     automatically generated in the `Makefile' that the shell script
     `configure' builds.  If you override the `CC' make variable and
     use the MIPS compilers, you may need to add `-Wf,-XNg1500 -Olimit
     3000'.

`elxsi-elxsi-bsd'
     The Elxsi's C compiler has known limitations that prevent it from
     compiling GNU C.  Please contact `[e-mail]' for more details.

`dsp16xx'
     A port to the AT&T DSP1610 family of processors.

`h8300-*-*'
     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.

`hppa*-*-*'
     There are two variants of this CPU, called 1.0 and 1.1, which have
     different machine descriptions.  You must use the right one for
     your machine.  All 7NN machines and 8N7 machines use 1.1, while
     all other 8NN machines use 1.0.

     The easiest way to handle this problem is to use `configure hpNNN'
     or `configure hpNNN-hpux', where NNN is the model number of the
     machine.  Then `configure' will figure out if the machine is a 1.0
     or 1.1.  Use `uname -a' to find out the model number of your
     machine.

     `-g' does not work on HP-UX, since that system uses a peculiar
     debugging format which GNU CC does not know about.  However, `-g'
     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-2.3 (or later) along with GDB-4.12 (or
     later).  These can be retrieved from all the traditional GNU ftp
     archive sites.

     Build GAS and install the resulting binary as:

          /usr/local/lib/gcc-lib/CONFIGURATION/GCCVERSION/as

     where CONFIGURATION is the configuration name (perhaps
     `hpNNN-hpux') and GCCVERSION is the GNU CC version number.  Do
     this *before* starting the build process, otherwise you will get
     errors from the HPUX assembler while building `libgcc2.a'.  The
     command

          make install-dir

     will create the necessary directory hierarchy so you can install
     GAS before building GCC.

     To enable debugging, configure GNU CC with the `--with-gnu-as'
     option before building.

     It has been reported that GNU CC produces invalid assembly code for
     1.1 machines running HP-UX 8.02 when using the HP assembler.
     Typically the errors look like this:
          as: bug.s @line#15 [err#1060]
            Argument 0 or 2 in FARG upper
                   - lookahead = ARGW1=FR,RTNVAL=GR
          as: foo.s @line#28 [err#1060]
            Argument 0 or 2 in FARG upper
                   - lookahead = ARGW1=FR

     You can check the version of HP-UX you are running by executing
     the command `uname -r'.   If you are indeed running HP-UX 8.02 on
     a PA and using the HP assembler then configure GCC with
     "hpNNN-hpux8.02".

`i370-*-*'
     This port is very preliminary and has many known bugs.  We hope to
     have a higher-quality port for this machine soon.

`i386-*-linuxoldld'
     Use this configuration to generate a.out binaries on Linux if you
     do not have gas/binutils version 2.5.2 or later installed. This is
     an obsolete configuration.

`i386-*-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.

`i386-*-linux'
     Use this configuration to generate ELF binaries on Linux.  You must
     use gas/binutils version 2.5.2 or later.

`i386-*-sco'
     Compilation with RCC is recommended.  Also, it may be a good idea
     to link with GNU malloc instead of the malloc that comes with the
     system.

`i386-*-sco3.2v4'
     Use this configuration for SCO release 3.2 version 4.

`i386-*-isc'
     It may be a good idea to link with GNU malloc instead of the
     malloc that comes with the system.

     In ISC version 4.1, `sed' core dumps when building `deduced.h'.
     Use the version of `sed' from version 4.0.

`i386-*-esix'
     It may be good idea to link with GNU malloc instead of the malloc
     that comes with the system.

`i386-ibm-aix'
     You need to use GAS version 2.1 or later, and and LD from GNU
     binutils version 2.2 or later.

`i386-sequent-bsd'
     Go to the Berkeley universe before compiling.  In addition, you
     probably need to create a file named `string.h' containing just
     one line: `#include <strings.h>'.

`i386-sequent-ptx1*'
     Sequent DYNIX/ptx 1.x.

`i386-sequent-ptx2*'
     Sequent DYNIX/ptx 2.x.

`i386-sun-sunos4'
     You may find that you need another version of GNU CC to begin
     bootstrapping with, since the current version when built with the
     system's own compiler seems to get an infinite loop compiling part
     of `libgcc2.c'.  GNU CC version 2 compiled with GNU CC (any
     version) seems not to have this problem.

     See *Note Sun Install::, for information on installing GNU CC on
     Sun systems.

`i[345]86-*-winnt3.5'
     This version requires a GAS that has not let been released.  Until
     it is, you can get a prebuilt binary version via anonymous ftp from
     `cs.washington.edu:pub/gnat' or `cs.nyu.edu:pub/gnat'. You must
     also use the Microsoft header files from the Windows NT 3.5 SDK.
     Find these on the CDROM in the `/mstools/h' directory dated
     9/4/94.  You must use a fixed version of Microsoft linker made
     especially for NT 3.5, which is also is available on the NT 3.5
     SDK CDROM.  If you do not have this linker, can you also use the
     linker from Visual C/C++ 1.0 or 2.0.

     Installing GNU CC for NT builds a wrapper linker, called `ld.exe',
     which mimics the behaviour of Unix `ld' in the specification of
     libraries (`-L' and `-l').  `ld.exe' looks for both Unix and
     Microsoft named libraries.  For example, if you specify `-lfoo',
     `ld.exe' will look first for `libfoo.a' and then for `foo.lib'.

     You may install GNU CC for Windows NT in one of two ways,
     depending on whether or not you have a Unix-like shell and various
     Unix-like utilities.

       1. If you do not have a Unix-like shell and few Unix-like
          utilities, you will use a DOS style batch script called
          `configure.bat'.  Invoke it as `configure winnt' from an
          MSDOS console window or from the program manager dialog box.
          `configure.bat' assumes you have already installed and have
          in your path a Unix-like `sed' program which is used to
          create a working `Makefile' from `Makefile.in'.

          `Makefile' uses the Microsoft Nmake program maintenance
          utility and the Visual C/C++ V8.00 compiler to build GNU CC.
          You need only have the utilities `sed' and `touch' to use
          this installation method, which only automatically builds the
          compiler itself.  You must then examine what `fixinc.winnt'
          does, edit the header files by hand and build `libgcc.a'
          manually.

       2. The second type of installation assumes you are running a
          Unix-like shell, have a complete suite of Unix-like utilities
          in your path, and have a previous version of GNU CC already
          installed, either through building it via the above
          installation method or acquiring a pre-built binary.  In this
          case, use the `configure' script in the normal fashion.

`i860-intel-osf1'
     This is the Paragon.  If you have version 1.0 of the operating
     system, you need to take special steps to build GNU CC due to
     peculiarities of the system.  Newer system versions have no
     problem.  See the section `Installation Problems' in the GNU CC
     Manual.

`*-lynx-lynxos'
     LynxOS 2.2 and earlier comes with GNU CC 1.x already installed as
     `/bin/gcc'.  You should compile with this instead of `/bin/cc'.
     You can tell GNU CC to use the GNU assembler and linker, by
     specifying `--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.

`m68000-hp-bsd'
     HP 9000 series 200 running BSD.  Note that the C compiler that
     comes with this system cannot compile GNU CC; contact
     `[e-mail]' to get binaries of GNU CC for bootstrapping.

`m68k-altos'
     Altos 3068.  You must use the GNU assembler, linker and debugger.
     Also, you must fix a kernel bug.  Details in the file
     `README.ALTOS'.

`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 compiler.  You can bootstrap it more easily with
     previous versions of GNU CC if you have them.

     Installing GNU CC on the 3b1 is difficult if you do not already
     have GNU CC running, due to bugs in the installed C compiler.
     However, the following procedure might work.  We are unable to
     test it.

       1. Comment out the `#include "config.h"' line on line 37 of
          `cccp.c' and do `make cpp'.  This makes a preliminary version
          of GNU cpp.

       2. Save the old `/lib/cpp' and copy the preliminary GNU cpp to
          that file name.

       3. Undo your change in `cccp.c', or reinstall the original
          version, and do `make cpp' again.

       4. Copy this final version of GNU cpp into `/lib/cpp'.

       5. Replace every occurrence of `obstack_free' in the file
          `tree.c' with `_obstack_free'.

       6. Run `make' to get the first-stage GNU CC.

       7. Reinstall the original version of `/lib/cpp'.

       8. Now you can compile GNU CC with itself and install it in the
          normal fashion.

`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
     `--with-gnu-as' to the configure script or use GNU assembler with