aboutsummaryrefslogtreecommitdiff
path: root/contrib/ncurses/INSTALL
blob: 9814990daf1ce75dcda646240d9a6ba6f75df583 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
-- $Id: INSTALL,v 1.36 2000/05/06 17:30:14 tom Exp $
---------------------------------------------------------------------
             How to install Ncurses/Terminfo on your system
---------------------------------------------------------------------

    ************************************************************
    * READ ALL OF THIS FILE BEFORE YOU TRY TO INSTALL NCURSES. *
    ************************************************************

You should be reading the file INSTALL in a directory called ncurses-d.d, where
d.d is the current version number.  There should be several subdirectories,
including `c++', `form', `man', `menu', 'misc', `ncurses', `panel', `progs',
and `test'.  See the README file for a roadmap to the package.

If you are a Linux or FreeBSD or NetBSD distribution integrator or packager,
please read and act on the section titled IF YOU ARE A SYSTEM INTEGRATOR
below.

If you are converting from BSD curses and do not have root access, be sure
to read the BSD CONVERSION NOTES section below.

If you are using a version of XFree86 xterm older than 3.1.2F, see the section
on RECENT XTERM VERSIONS below.

If you are trying to build GNU Emacs using ncurses for terminal support,
read the USING NCURSES WITH EMACS section below.

If you are trying to build applications using gpm with ncurses,
read the USING NCURSES WITH GPM section below.

If you are trying to build Elvis using ncurses for terminal support,
read the USING NCURSES WITH ELVIS section below.

If you are running over the Andrew File System see the note below on
USING NCURSES WITH AFS.

If you want to build the Ada95 binding, go to the Ada95 directory and
follow the instructions there.  The Ada95 binding is not covered below.

If you are using anything but (a) Linux, or (b) one of the 4.4BSD-based
i386 Unixes, go read the Portability section in the TO-DO file before you
do anything else.


REQUIREMENTS:
------------

You will need the following in order to build and install ncurses under UNIX:

	* ANSI C compiler  (gcc is recommended)
	* sh               (bash will do)
	* awk              (mawk or gawk will do)
	* sed
	* BSD or System V style install (a script is enclosed)

Ncurses has been also built in the OS/2 EMX environment.


INSTALLATION PROCEDURE:
----------------------

1.  First, decide whether you want ncurses to replace your existing library (in
    which case you'll need super-user privileges) or be installed in parallel
    with it.

    The --prefix option to configure changes the root directory for installing
    ncurses.  The default is in subdirectories of /usr/local.  Use
    --prefix=/usr to replace your default curses distribution.  This is the
    default for Linux and BSD/OS users.

    The package gets installed beneath the --prefix directory as follows:

    In $(prefix)/bin:          tic, infocmp, captoinfo, tset,
    				reset, clear, tput, toe
    In $(prefix)/lib:          libncurses*.* libcurses.a
    In $(prefix)/share/terminfo: compiled terminal descriptions
    In $(prefix)/include:      C header files
    Under $(prefix)/man:       the manual pages

    Note however that the configure script attempts to locate previous
    installation of ncurses, and will set the default prefix according to where
    it finds the ncurses headers.

2.  Type `./configure' in the top-level directory of the distribution to
    configure ncurses for your operating system and create the Makefiles.
    Besides --prefix, various configuration options are available to customize
    the installation; use `./configure --help' to list the available options.

    If your operating system is not supported, read the PORTABILITY section in
    the file ncurses/README for information on how to create a configuration
    file for your system.

    The `configure' script generates makefile rules for one or more object
    models and their associated libraries:

	libncurses.a (normal)

	libcurses.a (normal, a link to libncurses.a)
		This gets left out if you configure with --disable-overwrite.

	libncurses.so (shared)

	libncurses_g.a (debug)

	libncurses_p.a (profile)

    If you do not specify any models, the normal and debug libraries will be
    configured.  Typing `configure' with no arguments is equivalent to:

    	./configure --with-normal --with-debug --enable-overwrite

    Typing

    	./configure --with-shared

    makes the shared libraries the default, resulting in

    	./configure --with-shared --with-normal --with-debug --enable-overwrite

    If you want only shared libraries, type

    	./configure --with-shared --without-normal --without-debug

    Rules for generating shared libraries are highly dependent upon the choice
    of host system and compiler.  We've been testing shared libraries on Linux
    and SunOS with gcc, but more work needs to be done to make shared libraries
    work on other systems.

    You can make curses and terminfo fall back to an existing file of termcap
    definitions by configuring with --enable-termcap.  If you do this, the
    library will search /etc/termcap before the terminfo database, and will
    also interpret the contents of the TERM environment variable.  See the
    section BSD CONVERSION NOTES below.

3.  Type `make'.  Ignore any warnings, no error messages should be produced.
    This should compile the ncurses library, the terminfo compiler tic(1),
    captoinfo(1), infocmp(1), toe(1), clear(1) tset(1), reset(1), and tput(1)
    programs (see the man pages for explanation of what they do), some test
    programs, and the panels, menus, and forms libraries.

4.  Run ncurses and several other test programs in the test directory to
    verify that ncurses functions correctly before doing an install that
    may overwrite system files.  Read the file test/README for details on
    the test programs.

    NOTE: You must have installed the terminfo database, or set the
    environment variable $TERMINFO to point to a SVr4-compatible terminfo
    database before running the test programs.  Not all vendors' terminfo
    databases are SVr4-compatible, but most seem to be.  Exceptions include
    DEC's Digital Unix (formerly known as OSF/1).

    The ncurses program is designed specifically to test the ncurses library.
    You can use it to verify that the screen highlights work correctly, that
    cursor addressing and window scrolling works OK, etc.

5.  Once you've tested, you can type `make install' to install libraries,
    the programs, the terminfo database and the man pages.  Alternately, you
    can type `make install' in each directory you want to install.  In the
    top-level directory, you can do a partial install using these commands:

	'make install.progs'    installs tic, infocmp, etc...
  	'make install.includes' installs the headers.
  	'make install.libs'     installs the libraries (and the headers).
  	'make install.data'     installs the terminfo data. (Note: `tic' must
	                        be installed before the terminfo data can be
			        compiled).
	'make install.man'      installs the man pages.

  ############################################################################
  #     CAVEAT EMPTOR: `install.data' run as root will NUKE any existing     #
  #  terminfo database. If you have any custom or unusual entries SAVE them  #
  #  before you install ncurses.  I have a file called terminfo.custom for   #
  #  this purpose.  Don't forget to run tic on the file once you're done.    #
  ############################################################################

    The terminfo(5) manual page wants to be preprocessed with tbl(1) before
    being formatted by nroff(1).  Modern man(1) implementations tend to do
    this by default, but you may want to look at your version's man page
    to be sure.

    If the system already has a curses library that you need to keep using
    for some bizarre binary-compatibility reason, you'll need to distinguish
    between it and ncurses. If ncurses is installed outside the standard
    directories (/usr/include and /usr/lib) then all your users will need
    to use the -I option to compile programs and -L to link them.

    If you have BSD curses installed in your system and you accidentally
    compile using its curses.h you'll end up with a large number of
    undefined symbols at link time. _waddbytes is one of them.

    IF YOU DO NOT HAVE ROOT: Change directory to the `progs' subdirectory
    and run the `capconvert' script.  This script will deduce various things
    about your environment and use them to build you a private terminfo tree,
    so you can use ncurses applications.

    If more than one user at your site does this, the space for the duplicate
    trees is wasted.  Try to get your site administrators to install a system-
    wide terminfo tree instead.

    See the BSD CONVERSION NOTES section below for a few more details.

6.  The c++ directory has C++ classes that are built on top of ncurses and
    panels.  You must have c++ (and its libraries) installed before you can
    compile and run the demo.

    Use --without-cxx-binding to tell configure to not build the C++ bindings
    and demo.

    If you do not have C++, you must use the --without-cxx option to tell
    the configure script to not attempt to determine the type of 'bool'
    which may be supported by C++.  IF YOU USE THIS OPTION, BE ADVISED THAT
    YOU MAY NOT BE ABLE TO COMPILE (OR RUN) NCURSES APPLICATIONS WITH C++.

7.  If you're running an older Linux, you must either (a) tell Linux that the
    console terminal type is `linux' or (b) make a link to or copy of the
    linux entry in the appropriate place under your terminfo directory, named
    `console'.  All 1.3 and many 1.2 distributions (including Yggdrasil and
    Red Hat) already have the console type set to `linux'.

    The way to change the wired-in console type depends on the configuration
    of your system. This may involve editing /etc/inittab, /etc/ttytype,
    /etc/profile and other such files.

    Warning: this is not for the fainthearted, if you mess up your console
    getty entries you can make your system unusable!  However, if you are
    a distribution maker, this is the right thing to do (see the note for
    integrators near the end of this file).

    The easier way is to link or copy l/linux to c/console under your terminfo
    directory.  Note: this will go away next time you do `make install.data'
    and you'll have to redo it. There is no need to have entries for all
    possible screen sizes, ncurses will figure out the size automatically.


COMPATIBILITY WITH OLDER VERSIONS OF NCURSES:
--------------------------------------------

    Because ncurses implements the X/Open Curses Specification, its interface
    is fairly stable.  That does not mean the interface does not change.
    Changes are made to the documented interfaces when we find differences
    between ncurses and X/Open or implementations which they certify (such as
    Solaris).  We add extensions to those interfaces to solve problems not
    addressed by the original curses design, but those must not conflict with
    the X/Open documentation.

    Here are some of the major interface changes, and related problems which
    you may encounter when building a system with different versions of
    ncurses:

    5.0
    	Interface changes:

	+ implemented the wcolor_set() and slk_color() functions.

	+ move macro winch to a function, to hide details of struct ldat

	+ corrected prototypes for slk_* functions, using chtype rather than
	  attr_t.

	+ the slk_attr_{set,off,on} functions need an additional void*
	  parameter according to XSI.

	+ modified several prototypes to correspond with 1997 version of X/Open
	  Curses:  [w]attr_get(), [w]attr_set(), border_set() have different
	  parameters.  Some functions were renamed or misspelled: 
	  erase_wchar(), in_wchntr(), mvin_wchntr().  Some developers have used
	  attr_get().

	Added extensions:  keybound(), curses_version().

	Terminfo database changes:

	+ change translation for termcap 'rs' to terminfo 'rs2', which is
	  the documented equivalent, rather than 'rs1'.

	The problems are subtler in recent releases.

	a) This release provides users with the ability to define their own
	   terminal capability extensions, like termcap.  To accomplish this,
	   we redesigned the TERMTYPE struct (in term.h).  Very few
	   applications use this struct.  They must be recompiled to work with
	   the 5.0 library.

	a) If you use the extended terminfo names (i.e., you used configure
	   --enable-tcap-names), the resulting terminfo database can have some
	   entries which are not readable by older versions of ncurses.  This
	   is a bug in the older versions:

	   + the terminfo database stores booleans, numbers and strings in
	     arrays.  The capabilities that are listed in the arrays are
	     specified by X/Open.  ncurses recognizes a number of obsolete and
	     extended names which are stored past the end of the specified
	     entries.

	   + a change to read_entry.c in 951001 made the library do an lseek()
	     call incorrectly skipping data which is already read from the
	     string array.  This happens when the number of strings in the
	     terminfo data file is greater than STRCOUNT, the number of
	     specified and obsolete or extended strings.

	   + as part of alignment with the X/Open final specification, in the
	     990109 patch we added two new terminfo capabilities:
	     set_a_attributes and set_pglen_inch).  This makes the indices for
	     the obsolete and extended capabilities shift up by 2.

	   + the last two capabilities in the obsolete/extended list are memu
	     and meml, which are found in most terminfo descriptions for xterm.

	     When trying to read this terminfo entry, the spurious lseek()
	     causes the library to attempt to read the final portion of the
	     terminfo data (the text of the string capabilities) 4 characters
	     past its starting point, and reads 4 characters too few.  The
	     library rejects the data, and applications are unable to
	     initialize that terminal type.

	   FIX: remove memu and meml from the xterm description.  They are
	   obsolete, not used by ncurses.  (It appears that the feature was
	   added to xterm to make it more like hpterm).

	   This is not a problem if you do not use the -x option of tic to
	   create a terminfo database with extended names.  Note that the
	   user-defined terminal capabilities are not affected by this bug,
	   since they are stored in a table after the older terminfo data ends,
	   and are invisible to the older libraries.

	c) Some developers did not wish to use the C++ binding, and used the
	   configure --without-cxx option.  This causes problems if someone
	   uses the ncurses library from C++ because that configure test
	   determines the type for C++'s bool and makes ncurses match it, since
	   both C++ and curses are specified to declare bool.  Calling ncurses
	   functions with the incorrect type for bool will cause execution
	   errors.  In 5.0 we added a configure option "--without-cxx-binding"
	   which controls whether the binding itself is built and installed.

    4.2
    	Interface changes:

	+ correct prototype for termattrs() as per XPG4 version 2.

	+ add placeholder prototypes for color_set(), erasewchar(),
	  term_attrs(), wcolor_set() as per XPG4 version 2.

	+ add macros getcur[xy] getbeg[xy] getpar[xy], which are defined in
	  SVr4 headers.

	New extensions: keyok() and define_key().

	Terminfo database changes:

	+ corrected definition in curses.h for ACS_LANTERN, which was 'I'
	  rather than 'i'.

    4.1 (May 15, 1997)

	We added these extensions:  use_default_colors().  Also added
	configure option --enable-const, to support the use of const where
	X/Open should have, but did not, specify.

	The terminfo database content changed the representation of color for
	most entries that use ANSI colors.  SVr4 curses treats the setaf/setab
	and setf/setb capabilities differently, interchanging the red/blue
	colors in the latter.

    4.0 (December 24, 1996)

	We bumped to version 4.0 because the newly released dynamic loader
	(ld.so.1.8.5) on Linux did not load shared libraries whose ABI and REL
	versions were inconsistent.  At that point, ncurses ABI was 3.4 and the
	REL was 1.9.9g, so we made them consistent.

    1.9.9g (December 1, 1996)

    	This fixed most of the problems with 1.9.9e, and made these interface
	changes:

	+ remove tparam(), which had been provided for compatibility with
	  some termcap.  tparm() is standard, and does not conflict with
	  application's fallback for missing tparam().

	+ turn off hardware echo in initscr().  This changes the sense of the
	  echo() function, which was initialized to echoing rather than
	  nonechoing (the latter is specified).  There were several other
	  corrections to the terminal I/O settings which cause applications to
	  behave differently.

	+ implemented several functions (such as attr_on()) which were
	  available only as macros.

	+ corrected several typos in curses.h.in (i.e., the mvXXXX macros).

	+ corrected prototypes for delay_output(),
	  has_color, immedok() and idcok().

	+ corrected misspelled getbkgd().  Some applications used the
	  misspelled name.

	+ added _yoffset to WINDOW.  The size of WINDOW does not impact
	  applications, since they use only pointers to WINDOW structs.

	These changes were made to the terminfo database:

	+ removed boolean 'getm' which was available as an extended name.

	We added these extensions: wresize(), resizeterm(), has_key() and
	mcprint().

    1.9.9e (March 24, 1996)

	not recommended (a last-minute/untested change left the forms and
    	menus libraries unusable since they do not repaint the screen).
	Foreground/background colors are combined incorrectly, working properly
	only on a black background.  When this was released, the X/Open
	specification was available only in draft form.

	Some applications (such as lxdialog) were "fixed" to work with the
	incorrect color scheme.


IF YOU ARE A SYSTEM INTEGRATOR:
------------------------------

    Beginning with 1.9.9, the ncurses distribution includes both a tset
    utility and /usr/share/tabset directory.  If you are installing ncurses,
    it is no longer either necessary or desirable to install tset-jv.

    Configuration and Installation:

	Configure with --prefix=/usr to make the install productions put
	libraries and headers in the correct locations (overwriting any
	previous curses libraries and headers).  This will put the terminfo
	hierarchy under /usr/share/terminfo; you may want to override this with
	--datadir=/usr/share/misc; terminfo and tabset are installed under the
	data directory.

	Please configure the ncurses library in a pure-terminfo mode; that
	is, with the --disable-termcap option.   This will make the ncurses
	library smaller and faster. The ncurses library includes a termcap
	emulation that queries the terminfo database, so even applications
	that use raw termcap to query terminal characteristics will win
	(providing you recompile and relink them!).

	If you must configure with termcap fallback enabled, you may also
	wish to use the --enable-getcap option.  This option speeds up
	termcap-based startups, at the expense of not allowing personal
	termcap entries to reference the terminfo tree.  See the code in
	ncurses/tinfo/read_termcap.c for details.

	Note that if you have $TERMCAP set, ncurses will use that value
	to locate termcap data.  In particular, running from xterm will
	set $TERMCAP to the contents of the xterm's termcap entry.
	If ncurses sees that, it will not examine /etc/termcap.

    Keyboard Mapping:

	The terminfo file assumes that Shift-Tab generates \E[Z (the ECMA-48
	reverse-tabulation sequence) rather than ^I.  Here are the loadkeys -d
	mappings that will set this up:

		keycode  15 = Tab             Tab
			alt     keycode  15 = Meta_Tab
			shift	keycode  15 = F26
		string F26 ="\033[Z"

    Naming the Console Terminal

	In various Linuxes (and possibly elsewhere) there has been a practice
	of designating the system console driver type as `console'.  Please
	do not do this any more!  It complicates peoples' lives, because it
	can mean that several different terminfo entries from different
	operating systems all logically want to be called `console'.

	Please pick a name unique to your console driver and set that up
	in the /etc/inittab table or local equivalent.  Send the entry to the
	terminfo maintainer (listed in the misc/terminfo file) to be included
	in the terminfo file, if it's not already there.  See the
	term(7) manual page included with this distribution for more on
	conventions for choosing type names.

	Here are some recommended primary console names:

		linux	-- Linux console driver
		freebsd	-- FreeBSD
		netbsd	-- NetBSD
		bsdos	-- BSD/OS

	If you are responsible for integrating ncurses for one of these
	distribution, please either use the recommended name or get back
	to us explaining why you don't want to, so we can work out nomenclature
	that will make users' lives easier rather than harder.


RECENT XTERM VERSIONS:
---------------------

	The terminfo database file included with this distribution assumes you
	are running an XFree86 xterm based on X11R6 (i.e., xterm-r6).  The
	earlier X11R5 entry (xterm-r5) is provided as well.

	If you are running XFree86 version 3.2 (actually 3.1.2F and up), you
	should consider using the xterm-xf86-v32 (or later, the most recent
	version is always named "xterm-xfree86") entry, which adds ANSI color
	and the VT220 capabilities which have been added in XFree86.  If you
	are running a mixed network, however, where this terminal description
	may be used on an older xterm, you may have problems, since
	applications that assume these capabilities will produce incorrect
	output on the older xterm (e.g., highlighting is not cleared).


CONFIGURING FALLBACK ENTRIES:
----------------------------

	In order to support operation of ncurses programs before the terminfo
	tree is accessible (that is, in single-user mode or at OS installation
	time) the ncurses library can be compiled to include an array of
	pre-fetched fallback entries.

	These entries are checked by setupterm() only when the conventional
	fetches from the terminfo tree and the termcap fallback (if configured)
	have been tried and failed.  Thus, the presence of a fallback will not
	shadow modifications to the on-disk entry for the same type, when that
	entry is accessible.

	By default, there are no entries on the fallback list.  After you
	have built the ncurses suite for the first time, you can change
	the list (the process needs infocmp(1)).  To do so, use the script
	MKfallback.sh.  A configure script option --with-fallbacks does this
	(it accepts a comma-separated list of the names you wish, and does
	not require a rebuild).

	If you wanted (say) to have linux, vt100, and xterm fallbacks, you
	would use the commands

		cd ncurses;
		MKfallback.sh linux vt100 xterm >fallback.c

	Then just rebuild and reinstall the library as you would normally.
	You can restore the default empty fallback list with

		MKfallback.sh >fallback.c

	The overhead for an empty fallback list is one trivial stub function.
	Any non-empty fallback list is const-ed and therefore lives in sharable
	text space.  You can look at the comment trailing each initializer in
	the generated ncurses/fallback.c file to see the core cost of the
	fallbacks.  A good rule of thumb for modern vt100-like entries is that
	each one will cost about 2.5K of text space.


BSD CONVERSION NOTES:
--------------------

	If you need to support really ancient BSD programs, you probably
	want to configure with the --enable-bsdpad option.  What this does
	is enable code in tputs() that recognizes a numeric prefix on a
	capability as a request for that much trailing padding in milliseconds.
	There are old BSD programs that do things like tputs("50").

	(If you are distributing ncurses as a support-library component of
	an application you probably want to put the remainder of this section
	in the package README file.)

        The following note applies only if you have configured ncurses with
	--enable-termcap.

------------------------------- CUT HERE --------------------------------

If you are installing this application privately (either because you
have no root access or want to experiment with it before doing a root
installation), there are a couple of details you need to be aware of.
They have to do with the ncurses library, which uses terminfo rather
than termcap for describing terminal characteristics.

Though the ncurses library is terminfo-based, it will interpret your
TERMCAP variable (if present), any local termcap files you reference
through it, and the system termcap file.  However, in order to avoid
slowing down your application startup, it will only do this once per
terminal type!

The first time you load a given terminal type from your termcap
database, the library initialization code will automatically write it
in terminfo format to a subdirectory under $HOME/.terminfo.  After
that, the initialization code will find it there and do a (much
faster) terminfo fetch.

Usually, all this means is that your home directory will silently grow
an invisible .terminfo subdirectory which will get filled in with
terminfo descriptions of terminal types as you invoke them.  If anyone
ever installs a global terminfo tree on your system, this will quietly
stop happening and your $HOME/.terminfo will become redundant.

The objective of all this logic is to make converting from BSD termcap
as painless as possible without slowing down your application (termcap
compilation is expensive).

If you don't have a TERMCAP variable or custom personal termcap file,
you can skip the rest of this dissertation.

If you *do* have a TERMCAP variable and/or a custom personal termcap file
that defines a terminal type, that definition will stop being visible
to this application after the first time you run it, because it will
instead see the terminfo entry that it wrote to $HOME/terminfo the
first time around.

Subsequently, editing the TERMCAP variable or personal TERMCAP file
will have no effect unless you explicitly remove the terminfo entry
under $HOME/terminfo.  If you do that, the entry will be recompiled
from your termcap resources the next time it is invoked.

To avoid these complications, use infocmp(1) and tic(1) to edit the
terminfo directory directly.

------------------------------- CUT HERE --------------------------------

USING NCURSES WITH AFS:
	AFS treats each directory as a separate logical filesystem, you
	can't hard-link across them.  The --enable-symlinks option copes
	with this by making tic use symbolic links.

USING NCURSES WITH EMACS:
	GNU Emacs has its own termcap support.  By default, it uses a mixture
	of those functions and code linked from the host system's libraries.
	You need to foil this and shut out the GNU termcap library entirely.

	In order to do this, hack the Linux config file (s/linux.h) to contain
	a #define TERMINFO and set the symbol LIBS_TERMCAP to "-lncurses".

	We have submitted such a change for the 19.30 release, so it may
	already be applied in your sources -- check for the #define TERMINFO.

USING NCURSES WITH GPM:
	Ncurses 4.1 and up can be configured to use GPM (General Purpose Mouse)
	which is used on Linux console.  Be aware that GPM is commonly
	installed as a shared library which contains a wrapper for the curses
	wgetch() function (libcurses.o).  Some integrators have simplified
	linking applications by combining all of libcurses.so (the BSD curses)
	into the libgpm.so file, producing symbol conflicts with ncurses.  You
	may be able to work around this problem by linking as follows:

		cc -o foo foo.o -lncurses -lgpm -lncurses

	but the linker may not cooperate, producing mysterious errors.
	A patched version of gpm is available:

		dickey.his.com:/ncurses/gpm-1.10-970125.tar.gz

	This patch is incorporated in gpm 1.12; however some integrators
	are slow to update this library.

USING NCURSES WITH ELVIS:
	To use ncurses as the screen-painting library for Elvis, apply the
	following patch to the Elvis curses

*** curses.c.orig       Sun Jun 26 05:48:23 1994
--- curses.c    Sun Feb 11 16:50:41 1996
***************
*** 986,992 ****
  {
        if (has_IM)
                do_IM();
!       do_IC();
        qaddch(ch);
        if (has_EI)
                do_EI();
--- 986,995 ----
  {
        if (has_IM)
                do_IM();
!#ifdef NCURSES_VERSION
!       else	/* ncurses does insertion in a slightly nonstandard way */
!#endif
!               do_IC();
        qaddch(ch);
        if (has_EI)
                do_EI();

This patch is for elvis-1.8pl4 but it can even be used for elvis-1.8pl3 with
an offset of -11 lines.

BUGS:
	Send any feedback to the ncurses mailing list at
	bug-ncurses@gnu.org. To subscribe send mail to
	bug-ncurses-request@gnu.org with body that reads:
	subscribe ncurses <your-email-address-here>

	The Hacker's Guide in the misc directory includes some guidelines
	on how to report bugs in ways that will get them fixed most quickly.