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< h1 class = "settitle" > Installing GCC: Old documentation< / h1 >
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< h1 align = "center" > Old installation documentation< / h1 >
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< p > Note most of this information is out of date and superseded by the
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previous chapters of this manual. It is provided for historical
reference only, because of a lack of volunteers to merge it into the
main manual.
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< p > Here is the procedure for installing GCC on a GNU or Unix system.
< ol type = 1 start = 1 >
< li > If you have chosen a configuration for GCC which requires other GNU
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tools (such as GAS or the GNU linker) instead of the standard system
tools, install the required tools in the build directory under the names
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< samp > < span class = "file" > as< / span > < / samp > , < samp > < span class = "file" > ld< / span > < / samp > or whatever is appropriate.
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< p > Alternatively, you can do subsequent compilation using a value of the
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< code > PATH< / code > environment variable such that the necessary GNU tools come
before the standard system tools.
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< li > Specify the host, build and target machine configurations. You do this
when you run the < samp > < span class = "file" > configure< / span > < / samp > script.
< p > The < dfn > build< / dfn > machine is the system which you are using, the
< dfn > host< / dfn > machine is the system where you want to run the resulting
compiler (normally the build machine), and the < dfn > target< / dfn > machine is
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the system for which you want the compiler to generate code.
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< p > If you are building a compiler to produce code for the machine it runs
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on (a native compiler), you normally do not need to specify any operands
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to < samp > < span class = "file" > configure< / span > < / samp > ; it will try to guess the type of machine you are on
and use that as the build, host and target machines. So you don't need
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to specify a configuration when building a native compiler unless
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< samp > < span class = "file" > configure< / span > < / samp > cannot figure out what your configuration is or guesses
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wrong.
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< p > In those cases, specify the build machine's < dfn > configuration name< / dfn >
with the < samp > < span class = "option" > --host< / span > < / samp > option; the host and target will default to be
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the same as the host machine.
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< p > Here is an example:
< pre class = "smallexample" > ./configure --host=sparc-sun-sunos4.1
< / pre >
< p > A configuration name may be canonical or it may be more or less
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abbreviated.
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< p > A canonical configuration name has three parts, separated by dashes.
It looks like this: ‘ < samp > < var > cpu< / var > < span class = "samp" > -< / span > < var > company< / var > < span class = "samp" > -< / span > < var > system< / var > < / samp > ’ .
(The three parts may themselves contain dashes; < samp > < span class = "file" > configure< / span > < / samp >
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can figure out which dashes serve which purpose.) For example,
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‘ < samp > < span class = "samp" > m68k-sun-sunos4.1< / span > < / samp > ’ specifies a Sun 3.
< p > You can also replace parts of the configuration by nicknames or aliases.
For example, ‘ < samp > < span class = "samp" > sun3< / span > < / samp > ’ stands for ‘ < samp > < span class = "samp" > m68k-sun< / span > < / samp > ’ , so
‘ < samp > < span class = "samp" > sun3-sunos4.1< / span > < / samp > ’ is another way to specify a Sun 3.
< p > You can specify a version number after any of the system types, and some
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of the CPU types. In most cases, the version is irrelevant, and will be
ignored. So you might as well specify the version if you know it.
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< p > See < a href = "#Configurations" > Configurations< / a > , for a list of supported configuration names and
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notes on many of the configurations. You should check the notes in that
section before proceeding any further with the installation of GCC.
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< / ol >
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< p > < h2 > < a name = "Configurations" > < / a > Configurations Supported by GCC< / h2 > < a name = "index-configurations-supported-by-GCC-1" > < / a >
Here are the possible CPU types:
< blockquote >
<!-- gmicro, fx80, spur and tahoe omitted since they don't work. -->
1750a, a29k, alpha, arm, avr, c< var > n< / var > , clipper, dsp16xx, elxsi, fr30, h8300,
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hppa1.0, hppa1.1, i370, i386, i486, i586, i686, i786, i860, i960, ip2k, m32r,
m68000, m68k, m88k, mcore, mips, mipsel, mips64, mips64el,
mn10200, mn10300, ns32k, pdp11, powerpc, powerpcle, romp, rs6000, sh, sparc,
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sparclite, sparc64, v850, vax, we32k.
< / blockquote >
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< p > Here are the recognized company names. As you can see, customary
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abbreviations are used rather than the longer official names.
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<!-- What should be done about merlin, tek*, dolphin? -->
< blockquote >
acorn, alliant, altos, apollo, apple, att, bull,
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cbm, convergent, convex, crds, dec, dg, dolphin,
elxsi, encore, harris, hitachi, hp, ibm, intergraph, isi,
mips, motorola, ncr, next, ns, omron, plexus,
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sequent, sgi, sony, sun, tti, unicom, wrs.
< / blockquote >
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< p > The company name is meaningful only to disambiguate when the rest of
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the information supplied is insufficient. You can omit it, writing
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just ‘ < samp > < var > cpu< / var > < span class = "samp" > -< / span > < var > system< / var > < / samp > ’ , if it is not needed. For example,
‘ < samp > < span class = "samp" > vax-ultrix4.2< / span > < / samp > ’ is equivalent to ‘ < samp > < span class = "samp" > vax-dec-ultrix4.2< / span > < / samp > ’ .
< p > Here is a list of system types:
< blockquote >
386bsd, aix, acis, amigaos, aos, aout, aux, bosx, bsd, clix, coff, ctix, cxux,
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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,
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vxworks, winnt, xenix.
< / blockquote >
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< p class = "noindent" > You can omit the system type; then < samp > < span class = "file" > configure< / span > < / samp > guesses the
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operating system from the CPU and company.
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< p > You can add a version number to the system type; this may or may not
make a difference. For example, you can write ‘ < samp > < span class = "samp" > bsd4.3< / span > < / samp > ’ or
‘ < samp > < span class = "samp" > bsd4.4< / span > < / samp > ’ to distinguish versions of BSD. In practice, the version
number is most needed for ‘ < samp > < span class = "samp" > sysv3< / span > < / samp > ’ and ‘ < samp > < span class = "samp" > sysv4< / span > < / samp > ’ , which are often
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treated differently.
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< p > ‘ < samp > < span class = "samp" > linux-gnu< / span > < / samp > ’ is the canonical name for the GNU/Linux target; however
GCC will also accept ‘ < samp > < span class = "samp" > linux< / span > < / samp > ’ . The version of the kernel in use is
not relevant on these systems. A suffix such as ‘ < samp > < span class = "samp" > libc1< / span > < / samp > ’ or ‘ < samp > < span class = "samp" > aout< / span > < / samp > ’
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distinguishes major versions of the C library; all of the suffixed versions
are obsolete.
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< p > If you specify an impossible combination such as ‘ < samp > < span class = "samp" > i860-dg-vms< / span > < / samp > ’ ,
then you may get an error message from < samp > < span class = "file" > configure< / span > < / samp > , or it may
ignore part of the information and do the best it can with the rest.
< samp > < span class = "file" > configure< / span > < / samp > always prints the canonical name for the alternative
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that it used. GCC does not support all possible alternatives.
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< p > Often a particular model of machine has a name. Many machine names are
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recognized as aliases for CPU/company combinations. Thus, the machine
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name ‘ < samp > < span class = "samp" > sun3< / span > < / samp > ’ , mentioned above, is an alias for ‘ < samp > < span class = "samp" > m68k-sun< / span > < / samp > ’ .
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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:
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< blockquote >
3300, 3b1, 3b< var > n< / var > , 7300, altos3068, altos,
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apollo68, att-7300, balance,
convex-c< var > n< / var > , crds, decstation-3100,
decstation, delta, encore,
fx2800, gmicro, hp7< var > nn< / var > , hp8< var > nn< / var > ,
hp9k2< var > nn< / var > , hp9k3< var > nn< / var > , hp9k7< var > nn< / var > ,
hp9k8< var > nn< / var > , 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,
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sun4, symmetry, tower-32, tower.
< / blockquote >
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< p class = "noindent" > Remember that a machine name specifies both the cpu type and the company
name.
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< hr / >
< p > < a href = "./index.html" > Return to the GCC Installation page< / a >
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