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3 <title>Installing GCC: Old documentation</title>
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12 2008 Free Software Foundation, Inc.
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41 --></style>
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42 </head>
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43 <body>
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44 <h1 class="settitle">Installing GCC: Old documentation</h1>
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45 <h1 align="center">Old installation documentation</h1>
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46
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47 <p>Note most of this information is out of date and superseded by the
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48 previous chapters of this manual. It is provided for historical
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49 reference only, because of a lack of volunteers to merge it into the
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50 main manual.
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51
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52 <p>Here is the procedure for installing GCC on a GNU or Unix system.
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53
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54 <ol type=1 start=1>
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55 <li>If you have chosen a configuration for GCC which requires other GNU
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56 tools (such as GAS or the GNU linker) instead of the standard system
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57 tools, install the required tools in the build directory under the names
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58 <samp><span class="file">as</span></samp>, <samp><span class="file">ld</span></samp> or whatever is appropriate.
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59
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60 <p>Alternatively, you can do subsequent compilation using a value of the
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61 <code>PATH</code> environment variable such that the necessary GNU tools come
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62 before the standard system tools.
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63
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64 <li>Specify the host, build and target machine configurations. You do this
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65 when you run the <samp><span class="file">configure</span></samp> script.
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66
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67 <p>The <dfn>build</dfn> machine is the system which you are using, the
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68 <dfn>host</dfn> machine is the system where you want to run the resulting
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69 compiler (normally the build machine), and the <dfn>target</dfn> machine is
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70 the system for which you want the compiler to generate code.
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71
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72 <p>If you are building a compiler to produce code for the machine it runs
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73 on (a native compiler), you normally do not need to specify any operands
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74 to <samp><span class="file">configure</span></samp>; it will try to guess the type of machine you are on
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75 and use that as the build, host and target machines. So you don't need
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76 to specify a configuration when building a native compiler unless
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77 <samp><span class="file">configure</span></samp> cannot figure out what your configuration is or guesses
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78 wrong.
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79
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80 <p>In those cases, specify the build machine's <dfn>configuration name</dfn>
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81 with the <samp><span class="option">--host</span></samp> option; the host and target will default to be
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82 the same as the host machine.
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83
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84 <p>Here is an example:
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85
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86 <pre class="smallexample"> ./configure --host=sparc-sun-sunos4.1
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87 </pre>
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88 <p>A configuration name may be canonical or it may be more or less
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89 abbreviated.
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90
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91 <p>A canonical configuration name has three parts, separated by dashes.
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92 It looks like this: ‘<samp><var>cpu</var><span class="samp">-</span><var>company</var><span class="samp">-</span><var>system</var></samp>’.
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93 (The three parts may themselves contain dashes; <samp><span class="file">configure</span></samp>
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94 can figure out which dashes serve which purpose.) For example,
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95 ‘<samp><span class="samp">m68k-sun-sunos4.1</span></samp>’ specifies a Sun 3.
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96
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97 <p>You can also replace parts of the configuration by nicknames or aliases.
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98 For example, ‘<samp><span class="samp">sun3</span></samp>’ stands for ‘<samp><span class="samp">m68k-sun</span></samp>’, so
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99 ‘<samp><span class="samp">sun3-sunos4.1</span></samp>’ is another way to specify a Sun 3.
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100
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101 <p>You can specify a version number after any of the system types, and some
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102 of the CPU types. In most cases, the version is irrelevant, and will be
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103 ignored. So you might as well specify the version if you know it.
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104
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105 <p>See <a href="#Configurations">Configurations</a>, for a list of supported configuration names and
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106 notes on many of the configurations. You should check the notes in that
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107 section before proceeding any further with the installation of GCC.
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108
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109 </ol>
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110
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111 <p><h2><a name="Configurations"></a>Configurations Supported by GCC</h2><a name="index-configurations-supported-by-GCC-1"></a>
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112 Here are the possible CPU types:
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113
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114 <blockquote>
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115 <!-- gmicro, fx80, spur and tahoe omitted since they don't work. -->
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116 1750a, a29k, alpha, arm, avr, c<var>n</var>, clipper, dsp16xx, elxsi, fr30, h8300,
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117 hppa1.0, hppa1.1, i370, i386, i486, i586, i686, i786, i860, i960, ip2k, m32r,
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118 m68000, m68k, m6811, m6812, m88k, mcore, mips, mipsel, mips64, mips64el,
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119 mn10200, mn10300, ns32k, pdp11, powerpc, powerpcle, romp, rs6000, sh, sparc,
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120 sparclite, sparc64, v850, vax, we32k.
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121 </blockquote>
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122
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123 <p>Here are the recognized company names. As you can see, customary
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124 abbreviations are used rather than the longer official names.
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125
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126 <!-- What should be done about merlin, tek*, dolphin? -->
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127 <blockquote>
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128 acorn, alliant, altos, apollo, apple, att, bull,
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129 cbm, convergent, convex, crds, dec, dg, dolphin,
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130 elxsi, encore, harris, hitachi, hp, ibm, intergraph, isi,
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131 mips, motorola, ncr, next, ns, omron, plexus,
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132 sequent, sgi, sony, sun, tti, unicom, wrs.
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133 </blockquote>
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134
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135 <p>The company name is meaningful only to disambiguate when the rest of
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136 the information supplied is insufficient. You can omit it, writing
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137 just ‘<samp><var>cpu</var><span class="samp">-</span><var>system</var></samp>’, if it is not needed. For example,
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138 ‘<samp><span class="samp">vax-ultrix4.2</span></samp>’ is equivalent to ‘<samp><span class="samp">vax-dec-ultrix4.2</span></samp>’.
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139
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140 <p>Here is a list of system types:
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141
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142 <blockquote>
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143 386bsd, aix, acis, amigaos, aos, aout, aux, bosx, bsd, clix, coff, ctix, cxux,
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144 dgux, dynix, ebmon, ecoff, elf, esix, freebsd, hms, genix, gnu, linux,
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145 linux-gnu, hiux, hpux, iris, irix, isc, luna, lynxos, mach, minix, msdos, mvs,
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146 netbsd, newsos, nindy, ns, osf, osfrose, ptx, riscix, riscos, rtu, sco, sim,
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147 solaris, sunos, sym, sysv, udi, ultrix, unicos, uniplus, unos, vms, vsta,
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148 vxworks, winnt, xenix.
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149 </blockquote>
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150
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151 <p class="noindent">You can omit the system type; then <samp><span class="file">configure</span></samp> guesses the
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152 operating system from the CPU and company.
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153
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154 <p>You can add a version number to the system type; this may or may not
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155 make a difference. For example, you can write ‘<samp><span class="samp">bsd4.3</span></samp>’ or
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156 ‘<samp><span class="samp">bsd4.4</span></samp>’ to distinguish versions of BSD. In practice, the version
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157 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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158 treated differently.
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159
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160 <p>‘<samp><span class="samp">linux-gnu</span></samp>’ is the canonical name for the GNU/Linux target; however
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161 GCC will also accept ‘<samp><span class="samp">linux</span></samp>’. The version of the kernel in use is
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162 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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163 distinguishes major versions of the C library; all of the suffixed versions
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164 are obsolete.
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165
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166 <p>If you specify an impossible combination such as ‘<samp><span class="samp">i860-dg-vms</span></samp>’,
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167 then you may get an error message from <samp><span class="file">configure</span></samp>, or it may
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168 ignore part of the information and do the best it can with the rest.
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169 <samp><span class="file">configure</span></samp> always prints the canonical name for the alternative
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170 that it used. GCC does not support all possible alternatives.
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171
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172 <p>Often a particular model of machine has a name. Many machine names are
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173 recognized as aliases for CPU/company combinations. Thus, the machine
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174 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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175 Sometimes we accept a company name as a machine name, when the name is
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176 popularly used for a particular machine. Here is a table of the known
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177 machine names:
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178
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179 <blockquote>
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180 3300, 3b1, 3b<var>n</var>, 7300, altos3068, altos,
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181 apollo68, att-7300, balance,
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182 convex-c<var>n</var>, crds, decstation-3100,
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183 decstation, delta, encore,
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184 fx2800, gmicro, hp7<var>nn</var>, hp8<var>nn</var>,
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185 hp9k2<var>nn</var>, hp9k3<var>nn</var>, hp9k7<var>nn</var>,
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186 hp9k8<var>nn</var>, iris4d, iris, isi68,
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187 m3230, magnum, merlin, miniframe,
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188 mmax, news-3600, news800, news, next,
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189 pbd, pc532, pmax, powerpc, powerpcle, ps2, risc-news,
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190 rtpc, sun2, sun386i, sun386, sun3,
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191 sun4, symmetry, tower-32, tower.
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192 </blockquote>
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193
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194 <p class="noindent">Remember that a machine name specifies both the cpu type and the company
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195 name.
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196 If you want to install your own homemade configuration files, you can
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197 use ‘<samp><span class="samp">local</span></samp>’ as the company name to access them. If you use
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198 configuration ‘<samp><var>cpu</var><span class="samp">-local</span></samp>’, the configuration name
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199 without the cpu prefix
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200 is used to form the configuration file names.
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201
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202 <p>Thus, if you specify ‘<samp><span class="samp">m68k-local</span></samp>’, configuration uses
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203 files <samp><span class="file">m68k.md</span></samp>, <samp><span class="file">local.h</span></samp>, <samp><span class="file">m68k.c</span></samp>,
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204 <samp><span class="file">xm-local.h</span></samp>, <samp><span class="file">t-local</span></samp>, and <samp><span class="file">x-local</span></samp>, all in the
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205 directory <samp><span class="file">config/m68k</span></samp>.
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206 <hr />
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207 <p><a href="./index.html">Return to the GCC Installation page</a>
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208
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209 <!-- ***GFDL******************************************************************** -->
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210 <!-- *************************************************************************** -->
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211 <!-- Part 6 The End of the Document -->
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212 </body></html>
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213
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