1: Basic Installation
2: ==================
3:
4: These are installation instructions for Readline-8.1.
5:
6: The simplest way to compile readline is:
7:
8: 1. `cd' to the directory containing the readline source code and type
9: `./configure' to configure readline for your system. If you're
10: using `csh' on an old version of System V, you might need to type
11: `sh ./configure' instead to prevent `csh' from trying to execute
12: `configure' itself.
13:
14: Running `configure' takes some time. While running, it prints some
15: messages telling which features it is checking for.
16:
17: 2. Type `make' to compile readline and build the static readline
18: and history libraries. If supported, the shared readline and history
19: libraries will be built also. See below for instructions on compiling
20: the other parts of the distribution. Typing `make everything' will
21: cause the static and shared libraries (if supported) and the example
22: programs to be built.
23:
24: 3. Type `make install' to install the static readline and history
25: libraries, the readline include files, the documentation, and, if
26: supported, the shared readline and history libraries.
27:
28: 4. You can remove the created libraries and object files from the
29: build directory by typing `make clean'. To also remove the
30: files that `configure' created (so you can compile readline for
31: a different kind of computer), type `make distclean'. There is
32: also a `make maintainer-clean' target, but that is intended mainly
33: for the readline developers, and should be used with care.
34:
35: The `configure' shell script attempts to guess correct values for
36: various system-dependent variables used during compilation. It
37: uses those values to create a `Makefile' in the build directory,
38: and Makefiles in the `doc', `shlib', and `examples'
39: subdirectories. It also creates a `config.h' file containing
40: system-dependent definitions. Finally, it creates a shell script
41: `config.status' that you can run in the future to recreate the
42: current configuration, a file `config.cache' that saves the
43: results of its tests to speed up reconfiguring, and a file
44: `config.log' containing compiler output (useful mainly for
45: debugging `configure').
46:
47: If you need to do unusual things to compile readline, please try
48: to figure out how `configure' could check whether to do them, and
49: mail diffs or instructions to <bug-readline@gnu.org> so they can
50: be considered for the next release. If at some point
51: `config.cache' contains results you don't want to keep, you may
52: remove or edit it.
53:
54: The file `configure.in' is used to create `configure' by a
55: program called `autoconf'. You only need `configure.in' if you
56: want to change it or regenerate `configure' using a newer version
57: of `autoconf'. The readline `configure.in' requires autoconf
58: version 2.50 or newer.
59:
60: Compilers and Options
61: =====================
62:
63: Some systems require unusual options for compilation or linking that
64: the `configure' script does not know about. You can give `configure'
65: initial values for variables by setting them in the environment. Using
66: a Bourne-compatible shell, you can do that on the command line like
67: this:
68:
69: CC=c89 CFLAGS=-O2 LIBS=-lposix ./configure
70:
71: Or on systems that have the `env' program, you can do it like this:
72:
73: env CPPFLAGS=-I/usr/local/include LDFLAGS=-s ./configure
74:
75: Compiling For Multiple Architectures
76: ====================================
77:
78: You can compile readline for more than one kind of computer at the
79: same time, by placing the object files for each architecture in their
80: own directory. To do this, you must use a version of `make' that
81: supports the `VPATH' variable, such as GNU `make'. `cd' to the
82: directory where you want the object files and executables to go and run
83: the `configure' script. `configure' automatically checks for the
84: source code in the directory that `configure' is in and in `..'.
85:
86: If you have to use a `make' that does not supports the `VPATH'
87: variable, you have to compile readline for one architecture at a
88: time in the source code directory. After you have installed
89: readline for one architecture, use `make distclean' before
90: reconfiguring for another architecture.
91:
92: Installation Names
93: ==================
94:
95: By default, `make install' will install the readline libraries in
96: `/usr/local/lib', the include files in
97: `/usr/local/include/readline', the man pages in `/usr/local/man',
98: and the info files in `/usr/local/info'. You can specify an
99: installation prefix other than `/usr/local' by giving `configure'
100: the option `--prefix=PATH' or by supplying a value for the
101: DESTDIR variable when running `make install'.
102:
103: You can specify separate installation prefixes for
104: architecture-specific files and architecture-independent files.
105: If you give `configure' the option `--exec-prefix=PATH', the
106: readline Makefiles will use PATH as the prefix for installing the
107: libraries. Documentation and other data files will still use the
108: regular prefix.
109:
110: Specifying the System Type
111: ==========================
112:
113: There may be some features `configure' can not figure out
114: automatically, but need to determine by the type of host readline
115: will run on. Usually `configure' can figure that out, but if it
116: prints a message saying it can not guess the host type, give it
117: the `--host=TYPE' option. TYPE can either be a short name for
118: the system type, such as `sun4', or a canonical name with three
119: fields: CPU-COMPANY-SYSTEM (e.g., i386-unknown-freebsd4.2).
120:
121: See the file `config.sub' for the possible values of each field.
122:
123: Sharing Defaults
124: ================
125:
126: If you want to set default values for `configure' scripts to share,
127: you can create a site shell script called `config.site' that gives
128: default values for variables like `CC', `cache_file', and `prefix'.
129: `configure' looks for `PREFIX/share/config.site' if it exists, then
130: `PREFIX/etc/config.site' if it exists. Or, you can set the
131: `CONFIG_SITE' environment variable to the location of the site script.
132: A warning: the readline `configure' looks for a site script, but not
133: all `configure' scripts do.
134:
135: Operation Controls
136: ==================
137:
138: `configure' recognizes the following options to control how it
139: operates.
140:
141: `--cache-file=FILE'
142: Use and save the results of the tests in FILE instead of
143: `./config.cache'. Set FILE to `/dev/null' to disable caching, for
144: debugging `configure'.
145:
146: `--help'
147: Print a summary of the options to `configure', and exit.
148:
149: `--quiet'
150: `--silent'
151: `-q'
152: Do not print messages saying which checks are being made.
153:
154: `--srcdir=DIR'
155: Look for the package's source code in directory DIR. Usually
156: `configure' can determine that directory automatically.
157:
158: `--version'
159: Print the version of Autoconf used to generate the `configure'
160: script, and exit.
161:
162: `configure' also accepts some other, not widely useful, options.
163:
164: Optional Features
165: =================
166:
167: The readline `configure' recognizes a single `--with-PACKAGE' option:
168:
169: `--with-curses'
170: This tells readline that it can find the termcap library functions
171: (tgetent, et al.) in the curses library, rather than a separate
172: termcap library. Readline uses the termcap functions, but does not
173: link with the termcap or curses library itself, allowing applications
174: which link with readline the to choose an appropriate library.
175: This option tells readline to link the example programs with the
176: curses library rather than libtermcap.
177:
178: `configure' also recognizes two `--enable-FEATURE' options:
179:
180: `--enable-shared'
181: Build the shared libraries by default on supported platforms. The
182: default is `yes'.
183:
184: `--enable-static'
185: Build the static libraries by default. The default is `yes'.
186:
187: `--enable-bracketed-paste-default'
188: Enable bracketed paste by default, so the initial value of the
189: `enable-bracketed-paste' Readline variable is `on'. The default
190: is `yes'.
191:
192: Shared Libraries
193: ================
194:
195: There is support for building shared versions of the readline and
196: history libraries. The configure script creates a Makefile in
197: the `shlib' subdirectory, and typing `make shared' will cause
198: shared versions of the readline and history libraries to be built
199: on supported platforms.
200:
201: If `configure' is given the `--enable-shared' option, it will attempt
202: to build the shared libraries by default on supported platforms.
203:
204: Configure calls the script support/shobj-conf to test whether or
205: not shared library creation is supported and to generate the values
206: of variables that are substituted into shlib/Makefile. If you
207: try to build shared libraries on an unsupported platform, `make'
208: will display a message asking you to update support/shobj-conf for
209: your platform.
210:
211: If you need to update support/shobj-conf, you will need to create
212: a `stanza' for your operating system and compiler. The script uses
213: the value of host_os and ${CC} as determined by configure. For
214: instance, FreeBSD 4.2 with any version of gcc is identified as
215: `freebsd4.2-gcc*'.
216:
217: In the stanza for your operating system-compiler pair, you will need to
218: define several variables. They are:
219:
220: SHOBJ_CC The C compiler used to compile source files into shareable
221: object files. This is normally set to the value of ${CC}
222: by configure, and should not need to be changed.
223:
224: SHOBJ_CFLAGS Flags to pass to the C compiler ($SHOBJ_CC) to create
225: position-independent code. If you are using gcc, this
226: should probably be set to `-fpic'.
227:
228: SHOBJ_LD The link editor to be used to create the shared library from
229: the object files created by $SHOBJ_CC. If you are using
230: gcc, a value of `gcc' will probably work.
231:
232: SHOBJ_LDFLAGS Flags to pass to SHOBJ_LD to enable shared object creation.
233: If you are using gcc, `-shared' may be all that is necessary.
234: These should be the flags needed for generic shared object
235: creation.
236:
237: SHLIB_XLDFLAGS Additional flags to pass to SHOBJ_LD for shared library
238: creation. Many systems use the -R option to the link
239: editor to embed a path within the library for run-time
240: library searches. A reasonable value for such systems would
241: be `-R$(libdir)'.
242:
243: SHLIB_LIBS Any additional libraries that shared libraries should be
244: linked against when they are created.
245:
246: SHLIB_LIBPREF The prefix to use when generating the filename of the shared
247: library. The default is `lib'; Cygwin uses `cyg'.
248:
249: SHLIB_LIBSUFF The suffix to add to `libreadline' and `libhistory' when
250: generating the filename of the shared library. Many systems
251: use `so'; HP-UX uses `sl'.
252:
253: SHLIB_LIBVERSION The string to append to the filename to indicate the version
254: of the shared library. It should begin with $(SHLIB_LIBSUFF),
255: and possibly include version information that allows the
256: run-time loader to load the version of the shared library
257: appropriate for a particular program. Systems using shared
258: libraries similar to SunOS 4.x use major and minor library
259: version numbers; for those systems a value of
260: `$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)$(SHLIB_MINOR)' is appropriate.
261: Systems based on System V Release 4 don't use minor version
262: numbers; use `$(SHLIB_LIBSUFF).$(SHLIB_MAJOR)' on those systems.
263: Other Unix versions use different schemes.
264:
265: SHLIB_DLLVERSION The version number for shared libraries that determines API
266: compatibility between readline versions and the underlying
267: system. Used only on Cygwin. Defaults to $SHLIB_MAJOR, but
268: can be overridden at configuration time by defining DLLVERSION
269: in the environment.
270:
271: SHLIB_DOT The character used to separate the name of the shared library
272: from the suffix and version information. The default is `.';
273: systems like Cygwin which don't separate version information
274: from the library name should set this to the empty string.
275:
276: SHLIB_STATUS Set this to `supported' when you have defined the other
277: necessary variables. Make uses this to determine whether
278: or not shared library creation should be attempted. If
279: shared libraries are not supported, this will be set to
280: `unsupported'.
281:
282: You should look at the existing stanzas in support/shobj-conf for ideas.
283:
284: Once you have updated support/shobj-conf, re-run configure and type
285: `make shared' or `make'. The shared libraries will be created in the
286: shlib subdirectory.
287:
288: If shared libraries are created, `make install' will install them.
289: You may install only the shared libraries by running `make
290: install-shared' from the top-level build directory. Running `make
291: install' in the shlib subdirectory will also work. If you don't want
292: to install any created shared libraries, run `make install-static'.
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