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1 Basic Installation |
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2 ================== |
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3 |
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4 These are generic installation instructions. |
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5 |
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6 The `configure' shell script attempts to guess correct values for |
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7 various system-dependent variables used during compilation. It uses |
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8 those values to create a `Makefile' in each directory of the package. |
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9 It may also create one or more `.h' files containing system-dependent |
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10 definitions. Finally, it creates a shell script `config.status' that |
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11 you can run in the future to recreate the current configuration, a file |
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12 `config.cache' that saves the results of its tests to speed up |
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13 reconfiguring, and a file `config.log' containing compiler output |
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14 (useful mainly for debugging `configure'). |
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15 |
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16 If you need to do unusual things to compile the package, please try |
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17 to figure out how `configure' could check whether to do them, and mail |
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18 diffs or instructions to the address given in the `README' so they can |
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19 be considered for the next release. If at some point `config.cache' |
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20 contains results you don't want to keep, you may remove or edit it. |
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21 |
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22 The file `configure.in' is used to create `configure' by a program |
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23 called `autoconf'. You only need `configure.in' if you want to change |
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24 it or regenerate `configure' using a newer version of `autoconf'. |
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25 |
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26 The simplest way to compile this package is: |
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27 |
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28 1. `cd' to the directory containing the package's source code and type |
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29 `./configure' to configure the package for your system. If you're |
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30 using `csh' on an old version of System V, you might need to type |
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31 `sh ./configure' instead to prevent `csh' from trying to execute |
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32 `configure' itself. |
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33 |
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34 Running `configure' takes awhile. While running, it prints some |
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35 messages telling which features it is checking for. |
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36 |
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37 2. Type `make' to compile the package. |
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38 |
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39 3. Optionally, type `make check' to run any self-tests that come with |
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40 the package. |
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41 |
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42 4. Type `make install' to install the programs and any data files and |
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43 documentation. |
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44 |
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45 5. You can remove the program binaries and object files from the |
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46 source code directory by typing `make clean'. To also remove the |
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47 files that `configure' created (so you can compile the package for |
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48 a different kind of computer), type `make distclean'. There is |
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49 also a `make maintainer-clean' target, but that is intended mainly |
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50 for the package's developers. If you use it, you may have to get |
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51 all sorts of other programs in order to regenerate files that came |
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52 with the distribution. |
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53 |
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54 Compilers and Options |
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55 ===================== |
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56 |
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57 Some systems require unusual options for compilation or linking that |
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58 the `configure' script does not know about. You can give `configure' |
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59 initial values for variables by setting them in the environment. Using |
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60 a Bourne-compatible shell, you can do that on the command line like |
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61 this: |
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62 CC=c89 CFLAGS=-O2 LIBS=-lposix ./configure |
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63 |
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64 Or on systems that have the `env' program, you can do it like this: |
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65 env CPPFLAGS=-I/usr/local/include LDFLAGS=-s ./configure |
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66 |
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67 Compiling For Multiple Architectures |
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68 ==================================== |
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69 |
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70 You can compile the package for more than one kind of computer at the |
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71 same time, by placing the object files for each architecture in their |
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72 own directory. To do this, you must use a version of `make' that |
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73 supports the `VPATH' variable, such as GNU `make'. `cd' to the |
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74 directory where you want the object files and executables to go and run |
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75 the `configure' script. `configure' automatically checks for the |
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76 source code in the directory that `configure' is in and in `..'. |
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77 |
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78 If you have to use a `make' that does not supports the `VPATH' |
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79 variable, you have to compile the package for one architecture at a time |
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80 in the source code directory. After you have installed the package for |
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81 one architecture, use `make distclean' before reconfiguring for another |
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82 architecture. |
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83 |
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84 Installation Names |
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85 ================== |
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86 |
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87 By default, `make install' will install the package's files in |
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88 `/usr/local/bin', `/usr/local/man', etc. You can specify an |
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89 installation prefix other than `/usr/local' by giving `configure' the |
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90 option `--prefix=PATH'. |
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91 |
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92 You can specify separate installation prefixes for |
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93 architecture-specific files and architecture-independent files. If you |
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94 give `configure' the option `--exec-prefix=PATH', the package will use |
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95 PATH as the prefix for installing programs and libraries. |
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96 Documentation and other data files will still use the regular prefix. |
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97 |
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98 In addition, if you use an unusual directory layout you can give |
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99 options like `--bindir=PATH' to specify different values for particular |
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100 kinds of files. Run `configure --help' for a list of the directories |
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101 you can set and what kinds of files go in them. |
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102 |
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103 If the package supports it, you can cause programs to be installed |
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104 with an extra prefix or suffix on their names by giving `configure' the |
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105 option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'. |
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106 |
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107 Optional Features |
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108 ================= |
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109 |
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110 Some packages pay attention to `--enable-FEATURE' options to |
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111 `configure', where FEATURE indicates an optional part of the package. |
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112 They may also pay attention to `--with-PACKAGE' options, where PACKAGE |
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113 is something like `gnu-as' or `x' (for the X Window System). The |
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114 `README' should mention any `--enable-' and `--with-' options that the |
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115 package recognizes. |
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116 |
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117 For packages that use the X Window System, `configure' can usually |
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118 find the X include and library files automatically, but if it doesn't, |
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119 you can use the `configure' options `--x-includes=DIR' and |
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120 `--x-libraries=DIR' to specify their locations. |
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121 |
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122 Specifying the System Type |
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123 ========================== |
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124 |
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125 There may be some features `configure' can not figure out |
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126 automatically, but needs to determine by the type of host the package |
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127 will run on. Usually `configure' can figure that out, but if it prints |
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128 a message saying it can not guess the host type, give it the |
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129 `--host=TYPE' option. TYPE can either be a short name for the system |
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130 type, such as `sun4', or a canonical name with three fields: |
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131 CPU-COMPANY-SYSTEM |
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132 |
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133 See the file `config.sub' for the possible values of each field. If |
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134 `config.sub' isn't included in this package, then this package doesn't |
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135 need to know the host type. |
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136 |
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137 If you are building compiler tools for cross-compiling, you can also |
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138 use the `--target=TYPE' option to select the type of system they will |
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139 produce code for and the `--build=TYPE' option to select the type of |
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140 system on which you are compiling the package. |
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141 |
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142 Sharing Defaults |
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143 ================ |
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144 |
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145 If you want to set default values for `configure' scripts to share, |
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146 you can create a site shell script called `config.site' that gives |
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147 default values for variables like `CC', `cache_file', and `prefix'. |
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148 `configure' looks for `PREFIX/share/config.site' if it exists, then |
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149 `PREFIX/etc/config.site' if it exists. Or, you can set the |
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150 `CONFIG_SITE' environment variable to the location of the site script. |
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151 A warning: not all `configure' scripts look for a site script. |
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152 |
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153 Operation Controls |
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154 ================== |
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155 |
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156 `configure' recognizes the following options to control how it |
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157 operates. |
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158 |
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159 `--cache-file=FILE' |
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160 Use and save the results of the tests in FILE instead of |
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161 `./config.cache'. Set FILE to `/dev/null' to disable caching, for |
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162 debugging `configure'. |
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163 |
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164 `--help' |
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165 Print a summary of the options to `configure', and exit. |
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166 |
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167 `--quiet' |
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168 `--silent' |
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169 `-q' |
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170 Do not print messages saying which checks are being made. To |
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171 suppress all normal output, redirect it to `/dev/null' (any error |
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172 messages will still be shown). |
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173 |
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174 `--srcdir=DIR' |
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175 Look for the package's source code in directory DIR. Usually |
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176 `configure' can determine that directory automatically. |
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177 |
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178 `--version' |
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179 Print the version of Autoconf used to generate the `configure' |
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180 script, and exit. |
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181 |
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182 `configure' also accepts some other, not widely useful, options. |