| 39 | | 3. Type `make install' to install the programs and any data files and |
| 40 | | documentation. |
| 41 | | |
| 42 | | 4. You can remove the program binaries and object files from the |
| 43 | | source code directory by typing `make clean'. |
| 44 | | |
| 45 | | Compilers and Options |
| 46 | | ===================== |
| 47 | | |
| 48 | | Some systems require unusual options for compilation or linking that |
| 49 | | the `configure' script does not know about. You can give `configure' |
| 50 | | initial values for variables by setting them in the environment. Using |
| 51 | | a Bourne-compatible shell, you can do that on the command line like |
| 52 | | this: |
| 53 | | CC=c89 CFLAGS=-O2 LIBS=-lposix ./configure |
| 54 | | |
| 55 | | Or on systems that have the `env' program, you can do it like this: |
| 56 | | env CPPFLAGS=-I/usr/local/include LDFLAGS=-s ./configure |
| 57 | | |
| 58 | | Compiling For Multiple Architectures |
| 59 | | ==================================== |
| 60 | | |
| 61 | | You can compile the package for more than one kind of computer at the |
| 62 | | same time, by placing the object files for each architecture in their |
| 63 | | own directory. To do this, you must use a version of `make' that |
| 64 | | supports the `VPATH' variable, such as GNU `make'. `cd' to the |
| 65 | | directory where you want the object files and executables to go and run |
| 66 | | the `configure' script. `configure' automatically checks for the |
| 67 | | source code in the directory that `configure' is in and in `..'. |
| 68 | | |
| 69 | | If you have to use a `make' that does not supports the `VPATH' |
| 70 | | variable, you have to compile the package for one architecture at a time |
| 71 | | in the source code directory. After you have installed the package for |
| 72 | | one architecture, use `make distclean' before reconfiguring for another |
| 73 | | architecture. |
| 74 | | |
| 75 | | Installation Names |
| 76 | | ================== |
| 77 | | |
| 78 | | By default, `make install' will install the package's files in |
| 79 | | `/usr/local/bin', `/usr/local/man', etc. You can specify an |
| 80 | | installation prefix other than `/usr/local' by giving `configure' the |
| 81 | | option `--prefix=PATH'. |
| 82 | | |
| 83 | | You can specify separate installation prefixes for |
| 84 | | architecture-specific files and architecture-independent files. If you |
| 85 | | give `configure' the option `--exec-prefix=PATH', the package will use |
| 86 | | PATH as the prefix for installing programs and libraries. |
| 87 | | Documentation and other data files will still use the regular prefix. |
| 88 | | |
| 89 | | If the package supports it, you can cause programs to be installed |
| 90 | | with an extra prefix or suffix on their names by giving `configure' the |
| 91 | | option `--program-prefix=PREFIX' or `--program-suffix=SUFFIX'. |
| 92 | | |
| 93 | | Optional Features |
| 94 | | ================= |
| 95 | | |
| 96 | | Some packages pay attention to `--enable-FEATURE' options to |
| 97 | | `configure', where FEATURE indicates an optional part of the package. |
| 98 | | They may also pay attention to `--with-PACKAGE' options, where PACKAGE |
| 99 | | is something like `gnu-as' or `x' (for the X Window System). The |
| 100 | | `README' should mention any `--enable-' and `--with-' options that the |
| 101 | | package recognizes. |
| 102 | | |
| 103 | | For packages that use the X Window System, `configure' can usually |
| 104 | | find the X include and library files automatically, but if it doesn't, |
| 105 | | you can use the `configure' options `--x-includes=DIR' and |
| 106 | | `--x-libraries=DIR' to specify their locations. |
| 107 | | |
| 108 | | Specifying the System Type |
| 109 | | ========================== |
| 110 | | |
| 111 | | There may be some features `configure' can not figure out |
| 112 | | automatically, but needs to determine by the type of host the package |
| 113 | | will run on. Usually `configure' can figure that out, but if it prints |
| 114 | | a message saying it can not guess the host type, give it the |
| 115 | | `--host=TYPE' option. TYPE can either be a short name for the system |
| 116 | | type, such as `sun4', or a canonical name with three fields: |
| 117 | | CPU-COMPANY-SYSTEM |
| 118 | | |
| 119 | | See the file `config.sub' for the possible values of each field. If |
| 120 | | `config.sub' isn't included in this package, then this package doesn't |
| 121 | | need to know the host type. |
| 122 | | |
| 123 | | If you are building compiler tools for cross-compiling, you can also |
| 124 | | use the `--target=TYPE' option to select the type of system they will |
| 125 | | produce code for and the `--build=TYPE' option to select the type of |
| 126 | | system on which you are compiling the package. |
| 127 | | |
| 128 | | Sharing Defaults |
| 129 | | ================ |
| 130 | | |
| 131 | | If you want to set default values for `configure' scripts to share, |
| 132 | | you can create a site shell script called `config.site' that gives |
| 133 | | default values for variables like `CC', `cache_file', and `prefix'. |
| 134 | | `configure' looks for `PREFIX/share/config.site' if it exists, then |
| 135 | | `PREFIX/etc/config.site' if it exists. Or, you can set the |
| 136 | | `CONFIG_SITE' environment variable to the location of the site script. |
| 137 | | A warning: not all `configure' scripts look for a site script. |
| 138 | | |
| 139 | | Operation Controls |
| 140 | | ================== |
| 141 | | |
| 142 | | `configure' recognizes the following options to control how it |
| 143 | | operates. |
| 144 | | |
| 145 | | `--cache-file=FILE' |
| 146 | | Use and save the results of the tests in FILE instead of |
| 147 | | `./config.cache'. Set FILE to `/dev/null' to disable caching, for |
| 148 | | debugging `configure'. |
| 149 | | |
| 150 | | `--help' |
| 151 | | Print a summary of the options to `configure', and exit. |
| 152 | | |
| 153 | | `--quiet' |
| 154 | | `--silent' |
| 155 | | `-q' |
| 156 | | Do not print messages saying which checks are being made. |
| 157 | | |
| 158 | | `--srcdir=DIR' |
| 159 | | Look for the package's source code in directory DIR. Usually |
| 160 | | `configure' can determine that directory automatically. |
| 161 | | |
| 162 | | `--version' |
| 163 | | Print the version of Autoconf used to generate the `configure' |
| 164 | | script, and exit. |
| 165 | | |
| 166 | | `configure' also accepts some other, not widely useful, options. |
| 167 | | |