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(gcc-300.info)Configurations

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Configurations Supported by GNU CC
==================================

   Here are the possible CPU types:

     1750a, a29k, alpha, arm, avr, cN, clipper, dsp16xx, elxsi, fr30,
     h8300, hppa1.0, hppa1.1, i370, i386, i486, i586, i686, i786, i860,
     i960, m32r, m68000, m68k, m6811, m6812, m88k, mcore, mips, mipsel,
     mips64, mips64el, mn10200, mn10300, ns32k, pdp11, powerpc,
     powerpcle, romp, rs6000, sh, sparc, sparclite, sparc64, v850, vax,
     we32k.

   Here are the recognized company names.  As you can see, customary
abbreviations are used rather than the longer official names.

     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, sequent, sgi, sony, sun, tti, unicom, wrs.

   The company name is meaningful only to disambiguate when the rest of
the information supplied is insufficient.  You can omit it, writing
just `CPU-SYSTEM', if it is not needed.  For example, `vax-ultrix4.2'
is equivalent to `vax-dec-ultrix4.2'.

   Here is a list of system types:

     386bsd, aix, acis, amigaos, aos, aout, aux, bosx, bsd, clix, coff,
     ctix, cxux, dgux, dynix, ebmon, ecoff, elf, esix, freebsd, hms,
     genix, gnu, linux, 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, vxworks,
     winnt, xenix.

You can omit the system type; then `configure' guesses the operating
system from the CPU and company.

   You can add a version number to the system type; this may or may not
make a difference.  For example, you can write `bsd4.3' or `bsd4.4' to
distinguish versions of BSD.  In practice, the version number is most
needed for `sysv3' and `sysv4', which are often treated differently.

   `linux-gnu' is the canonical name for the GNU/Linux target; however
GNU CC will also accept `linux'.  The version of the kernel in use is
not relevant on these systems.  A suffix such as `libc1' or `aout'
distinguishes major versions of the C library; all of the suffixed
versions are obsolete.

   If you specify an impossible combination such as `i860-dg-vms', then
you may get an error message from `configure', or it may ignore part of
the information and do the best it can with the rest.  `configure'
always prints the canonical name for the alternative that it used.  GNU
CC does not support all possible alternatives.

   Often a particular model of machine has a name.  Many machine names
are recognized as aliases for CPU/company combinations.  Thus, the
machine name `sun3', mentioned above, is an alias for `m68k-sun'.
Sometimes we accept a company name as a machine name, when the name is
popularly used for a particular machine.  Here is a table of the known
machine names:

     3300, 3b1, 3bN, 7300, altos3068, altos, apollo68, att-7300,
     balance, convex-cN, crds, decstation-3100, decstation, delta,
     encore, fx2800, gmicro, hp7NN, hp8NN, hp9k2NN, hp9k3NN, hp9k7NN,
     hp9k8NN, iris4d, iris, isi68, m3230, magnum, merlin, miniframe,
     mmax, news-3600, news800, news, next, pbd, pc532, pmax, powerpc,
     powerpcle, ps2, risc-news, rtpc, sun2, sun386i, sun386, sun3,
     sun4, symmetry, tower-32, tower.

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 `local' as the company name to access them.  If you use
configuration `CPU-local', the configuration name without the cpu prefix
is used to form the configuration file names.

   Thus, if you specify `m68k-local', configuration uses files
`m68k.md', `local.h', `m68k.c', `xm-local.h', `t-local', and `x-local',
all in the directory `config/m68k'.

   Here is a list of configurations that have special treatment or
special things you must know:

`vax-dec-vms'
     See Note: VMS Install, for details on how to install GNU CC on
     VMS.