1 # ===========================================================================
2 # http://www.gnu.org/software/autoconf-archive/ax_with_curses.html
3 # ===========================================================================
4 #
5 # SYNOPSIS
6 #
7 # AX_WITH_CURSES
8 #
9 # DESCRIPTION
10 #
11 # This macro checks whether a SysV or X/Open-compatible Curses library is
12 # present, along with the associated header file. The NcursesW
13 # (wide-character) library is searched for first, followed by Ncurses,
14 # then the system-default plain Curses. The first library found is the
15 # one returned. Finding libraries will first be attempted by using
16 # pkg-config, and should the pkg-config files not be available, will
17 # fallback to combinations of known flags itself.
18 #
19 # The following options are understood: --with-ncursesw, --with-ncurses,
20 # --without-ncursesw, --without-ncurses. The "--with" options force the
21 # macro to use that particular library, terminating with an error if not
22 # found. The "--without" options simply skip the check for that library.
23 # The effect on the search pattern is:
24 #
25 # (no options) - NcursesW, Ncurses, Curses
26 # --with-ncurses --with-ncursesw - NcursesW only [*]
27 # --without-ncurses --with-ncursesw - NcursesW only [*]
28 # --with-ncursesw - NcursesW only [*]
29 # --with-ncurses --without-ncursesw - Ncurses only [*]
30 # --with-ncurses - NcursesW, Ncurses [**]
31 # --without-ncurses --without-ncursesw - Curses only
32 # --without-ncursesw - Ncurses, Curses
33 # --without-ncurses - NcursesW, Curses
34 #
35 # [*] If the library is not found, abort the configure script.
36 #
37 # [**] If the second library (Ncurses) is not found, abort configure.
38 #
39 # The following preprocessor symbols may be defined by this macro if the
40 # appropriate conditions are met:
41 #
42 # HAVE_CURSES - if any SysV or X/Open Curses library found
43 # HAVE_CURSES_ENHANCED - if library supports X/Open Enhanced functions
44 # HAVE_CURSES_COLOR - if library supports color (enhanced functions)
45 # HAVE_CURSES_OBSOLETE - if library supports certain obsolete features
46 # HAVE_NCURSESW - if NcursesW (wide char) library is to be used
47 # HAVE_NCURSES - if the Ncurses library is to be used
48 #
49 # HAVE_CURSES_H - if <curses.h> is present and should be used
50 # HAVE_NCURSESW_H - if <ncursesw.h> should be used
51 # HAVE_NCURSES_H - if <ncurses.h> should be used
52 # HAVE_NCURSESW_CURSES_H - if <ncursesw/curses.h> should be used
53 # HAVE_NCURSES_CURSES_H - if <ncurses/curses.h> should be used
54 #
55 # (These preprocessor symbols are discussed later in this document.)
56 #
57 # The following output variables are defined by this macro; they are
58 # precious and may be overridden on the ./configure command line:
59 #
60 # CURSES_LIBS - library to add to xxx_LDADD
61 # CURSES_CFLAGS - include paths to add to xxx_CPPFLAGS
62 #
63 # In previous versions of this macro, the flags CURSES_LIB and
64 # CURSES_CPPFLAGS were defined. These have been renamed, in keeping with
65 # AX_WITH_CURSES's close bigger brother, PKG_CHECK_MODULES, which should
66 # eventually supersede the use of AX_WITH_CURSES. Neither the library
67 # listed in CURSES_LIBS, nor the flags in CURSES_CFLAGS are added to LIBS,
68 # respectively CPPFLAGS, by default. You need to add both to the
69 # appropriate xxx_LDADD/xxx_CPPFLAGS line in your Makefile.am. For
70 # example:
71 #
72 # prog_LDADD = @CURSES_LIBS@
73 # prog_CPPFLAGS = @CURSES_CFLAGS@
74 #
75 # If CURSES_LIBS is set on the configure command line (such as by running
76 # "./configure CURSES_LIBS=-lmycurses"), then the only header searched for
77 # is <curses.h>. If the user needs to specify an alternative path for a
78 # library (such as for a non-standard NcurseW), the user should use the
79 # LDFLAGS variable.
80 #
81 # The following shell variables may be defined by this macro:
82 #
83 # ax_cv_curses - set to "yes" if any Curses library found
84 # ax_cv_curses_enhanced - set to "yes" if Enhanced functions present
85 # ax_cv_curses_color - set to "yes" if color functions present
86 # ax_cv_curses_obsolete - set to "yes" if obsolete features present
87 #
88 # ax_cv_ncursesw - set to "yes" if NcursesW library found
89 # ax_cv_ncurses - set to "yes" if Ncurses library found
90 # ax_cv_plaincurses - set to "yes" if plain Curses library found
91 # ax_cv_curses_which - set to "ncursesw", "ncurses", "plaincurses" or "no"
92 #
93 # These variables can be used in your configure.ac to determine the level
94 # of support you need from the Curses library. For example, if you must
95 # have either Ncurses or NcursesW, you could include:
96 #
97 # AX_WITH_CURSES
98 # if test "x$ax_cv_ncursesw" != xyes && test "x$ax_cv_ncurses" != xyes; then
99 # AC_MSG_ERROR([requires either NcursesW or Ncurses library])
100 # fi
101 #
102 # If any Curses library will do (but one must be present and must support
103 # color), you could use:
104 #
105 # AX_WITH_CURSES
106 # if test "x$ax_cv_curses" != xyes || test "x$ax_cv_curses_color" != xyes; then
107 # AC_MSG_ERROR([requires an X/Open-compatible Curses library with color])
108 # fi
109 #
110 # Certain preprocessor symbols and shell variables defined by this macro
111 # can be used to determine various features of the Curses library. In
112 # particular, HAVE_CURSES and ax_cv_curses are defined if the Curses
113 # library found conforms to the traditional SysV and/or X/Open Base Curses
114 # definition. Any working Curses library conforms to this level.
115 #
116 # HAVE_CURSES_ENHANCED and ax_cv_curses_enhanced are defined if the
117 # library supports the X/Open Enhanced Curses definition. In particular,
118 # the wide-character types attr_t, cchar_t and wint_t, the functions
119 # wattr_set() and wget_wch() and the macros WA_NORMAL and _XOPEN_CURSES
120 # are checked. The Ncurses library does NOT conform to this definition,
121 # although NcursesW does.
122 #
123 # HAVE_CURSES_COLOR and ax_cv_curses_color are defined if the library
124 # supports color functions and macros such as COLOR_PAIR, A_COLOR,
125 # COLOR_WHITE, COLOR_RED and init_pair(). These are NOT part of the
126 # X/Open Base Curses definition, but are part of the Enhanced set of
127 # functions. The Ncurses library DOES support these functions, as does
128 # NcursesW.
129 #
130 # HAVE_CURSES_OBSOLETE and ax_cv_curses_obsolete are defined if the
131 # library supports certain features present in SysV and BSD Curses but not
132 # defined in the X/Open definition. In particular, the functions
133 # getattrs(), getcurx() and getmaxx() are checked.
134 #
135 # To use the HAVE_xxx_H preprocessor symbols, insert the following into
136 # your system.h (or equivalent) header file:
137 #
138 # #if defined HAVE_NCURSESW_CURSES_H
139 # # include <ncursesw/curses.h>
140 # #elif defined HAVE_NCURSESW_H
141 # # include <ncursesw.h>
142 # #elif defined HAVE_NCURSES_CURSES_H
143 # # include <ncurses/curses.h>
144 # #elif defined HAVE_NCURSES_H
145 # # include <ncurses.h>
146 # #elif defined HAVE_CURSES_H
147 # # include <curses.h>
148 # #else
149 # # error "SysV or X/Open-compatible Curses header file required"
150 # #endif
151 #
152 # For previous users of this macro: you should not need to change anything
153 # in your configure.ac or Makefile.am, as the previous (serial 10)
154 # semantics are still valid. However, you should update your system.h (or
155 # equivalent) header file to the fragment shown above. You are encouraged
156 # also to make use of the extended functionality provided by this version
157 # of AX_WITH_CURSES, as well as in the additional macros
158 # AX_WITH_CURSES_PANEL, AX_WITH_CURSES_MENU and AX_WITH_CURSES_FORM.
159 #
160 # LICENSE
161 #
162 # Copyright (c) 2009 Mark Pulford <mark@kyne.com.au>
163 # Copyright (c) 2009 Damian Pietras <daper@daper.net>
164 # Copyright (c) 2012 Reuben Thomas <rrt@sc3d.org>
165 # Copyright (c) 2011 John Zaitseff <J.Zaitseff@zap.org.au>
166 #
167 # This program is free software: you can redistribute it and/or modify it
168 # under the terms of the GNU General Public License as published by the
169 # Free Software Foundation, either version 3 of the License, or (at your
170 # option) any later version.
171 #
172 # This program is distributed in the hope that it will be useful, but
173 # WITHOUT ANY WARRANTY; without even the implied warranty of
174 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
175 # Public License for more details.
176 #
177 # You should have received a copy of the GNU General Public License along
178 # with this program. If not, see <http://www.gnu.org/licenses/>.
179 #
180 # As a special exception, the respective Autoconf Macro's copyright owner
181 # gives unlimited permission to copy, distribute and modify the configure
182 # scripts that are the output of Autoconf when processing the Macro. You
183 # need not follow the terms of the GNU General Public License when using
184 # or distributing such scripts, even though portions of the text of the
185 # Macro appear in them. The GNU General Public License (GPL) does govern
186 # all other use of the material that constitutes the Autoconf Macro.
187 #
188 # This special exception to the GPL applies to versions of the Autoconf
189 # Macro released by the Autoconf Archive. When you make and distribute a
190 # modified version of the Autoconf Macro, you may extend this special
191 # exception to the GPL to apply to your modified version as well.
193 #serial 17
195 # internal function to factorize common code that is used by both ncurses
196 # and ncursesw
197 AC_DEFUN([_FIND_CURSES_FLAGS], [
198 AC_MSG_CHECKING([for $1 via pkg-config])
200 AX_REQUIRE_DEFINED([PKG_CHECK_EXISTS])
201 _PKG_CONFIG([_ax_cv_$1_libs], [libs], [$1])
202 _PKG_CONFIG([_ax_cv_$1_cppflags], [cflags], [$1])
204 AS_IF([test "x$pkg_failed" = "xyes" || test "x$pkg_failed" = "xuntried"],[
205 AC_MSG_RESULT([no])
206 # No suitable .pc file found, have to find flags via fallback
207 AC_CACHE_CHECK([for $1 via fallback], [ax_cv_$1], [
208 AS_ECHO()
209 pkg_cv__ax_cv_$1_libs="-l$1"
210 pkg_cv__ax_cv_$1_cppflags="-D_GNU_SOURCE $CURSES_CFLAGS"
211 LIBS="$ax_saved_LIBS $pkg_cv__ax_cv_$1_libs"
212 CPPFLAGS="$ax_saved_CPPFLAGS $pkg_cv__ax_cv_$1_cppflags"
214 AC_MSG_CHECKING([for initscr() with $pkg_cv__ax_cv_$1_libs])
215 AC_LINK_IFELSE([AC_LANG_CALL([], [initscr])],
216 [
217 AC_MSG_RESULT([yes])
218 AC_MSG_CHECKING([for nodelay() with $pkg_cv__ax_cv_$1_libs])
219 AC_LINK_IFELSE([AC_LANG_CALL([], [nodelay])],[
220 ax_cv_$1=yes
221 ],[
222 AC_MSG_RESULT([no])
223 m4_if(
224 [$1],[ncursesw],[pkg_cv__ax_cv_$1_libs="$pkg_cv__ax_cv_$1_libs -ltinfow"],
225 [$1],[ncurses],[pkg_cv__ax_cv_$1_libs="$pkg_cv__ax_cv_$1_libs -ltinfo"]
226 )
227 LIBS="$ax_saved_LIBS $pkg_cv__ax_cv_$1_libs"
229 AC_MSG_CHECKING([for nodelay() with $pkg_cv__ax_cv_$1_libs])
230 AC_LINK_IFELSE([AC_LANG_CALL([], [nodelay])],[
231 ax_cv_$1=yes
232 ],[
233 ax_cv_$1=no
234 ])
235 ])
236 ],[
237 ax_cv_$1=no
238 ])
239 ])
240 ],[
241 AC_MSG_RESULT([yes])
242 # Found .pc file, using its information
243 LIBS="$ax_saved_LIBS $pkg_cv__ax_cv_$1_libs"
244 CPPFLAGS="$ax_saved_CPPFLAGS $pkg_cv__ax_cv_$1_cppflags"
245 ax_cv_$1=yes
246 ])
247 ])
249 AU_ALIAS([MP_WITH_CURSES], [AX_WITH_CURSES])
250 AC_DEFUN([AX_WITH_CURSES], [
251 AC_ARG_VAR([CURSES_LIBS], [linker library for Curses, e.g. -lcurses])
252 AC_ARG_VAR([CURSES_CFLAGS], [preprocessor flags for Curses, e.g. -I/usr/include/ncursesw])
253 AC_ARG_WITH([ncurses], [AS_HELP_STRING([--with-ncurses],
254 [force the use of Ncurses or NcursesW])],
255 [], [with_ncurses=check])
256 AC_ARG_WITH([ncursesw], [AS_HELP_STRING([--without-ncursesw],
257 [do not use NcursesW (wide character support)])],
258 [], [with_ncursesw=check])
260 ax_saved_LIBS=$LIBS
261 ax_saved_CPPFLAGS=$CPPFLAGS
263 AS_IF([test "x$with_ncurses" = xyes || test "x$with_ncursesw" = xyes],
264 [ax_with_plaincurses=no], [ax_with_plaincurses=check])
266 ax_cv_curses_which=no
268 # Test for NcursesW
269 AS_IF([test "x$CURSES_LIBS" = x && test "x$with_ncursesw" != xno], [
270 _FIND_CURSES_FLAGS([ncursesw])
272 AS_IF([test "x$ax_cv_ncursesw" = xno && test "x$with_ncursesw" = xyes], [
273 AC_MSG_ERROR([--with-ncursesw specified but could not find NcursesW library])
274 ])
276 AS_IF([test "x$ax_cv_ncursesw" = xyes], [
277 ax_cv_curses=yes
278 ax_cv_curses_which=ncursesw
279 CURSES_LIBS="$pkg_cv__ax_cv_ncursesw_libs"
280 CURSES_CFLAGS="$pkg_cv__ax_cv_ncursesw_cppflags"
281 AC_DEFINE([HAVE_NCURSESW], [1], [Define to 1 if the NcursesW library is present])
282 AC_DEFINE([HAVE_CURSES], [1], [Define to 1 if a SysV or X/Open compatible Curses library is present])
284 AC_CACHE_CHECK([for working ncursesw/curses.h], [ax_cv_header_ncursesw_curses_h], [
285 AC_LINK_IFELSE([AC_LANG_PROGRAM([[
286 @%:@define _XOPEN_SOURCE_EXTENDED 1
287 @%:@include <ncursesw/curses.h>
288 ]], [[
289 chtype a = A_BOLD;
290 int b = KEY_LEFT;
291 chtype c = COLOR_PAIR(1) & A_COLOR;
292 attr_t d = WA_NORMAL;
293 cchar_t e;
294 wint_t f;
295 int g = getattrs(stdscr);
296 int h = getcurx(stdscr) + getmaxx(stdscr);
297 initscr();
298 init_pair(1, COLOR_WHITE, COLOR_RED);
299 wattr_set(stdscr, d, 0, NULL);
300 wget_wch(stdscr, &f);
301 ]])],
302 [ax_cv_header_ncursesw_curses_h=yes],
303 [ax_cv_header_ncursesw_curses_h=no])
304 ])
305 AS_IF([test "x$ax_cv_header_ncursesw_curses_h" = xyes], [
306 ax_cv_curses_enhanced=yes
307 ax_cv_curses_color=yes
308 ax_cv_curses_obsolete=yes
309 AC_DEFINE([HAVE_CURSES_ENHANCED], [1], [Define to 1 if library supports X/Open Enhanced functions])
310 AC_DEFINE([HAVE_CURSES_COLOR], [1], [Define to 1 if library supports color (enhanced functions)])
311 AC_DEFINE([HAVE_CURSES_OBSOLETE], [1], [Define to 1 if library supports certain obsolete features])
312 AC_DEFINE([HAVE_NCURSESW_CURSES_H], [1], [Define to 1 if <ncursesw/curses.h> is present])
313 ])
315 AC_CACHE_CHECK([for working ncursesw.h], [ax_cv_header_ncursesw_h], [
316 AC_LINK_IFELSE([AC_LANG_PROGRAM([[
317 @%:@define _XOPEN_SOURCE_EXTENDED 1
318 @%:@include <ncursesw.h>
319 ]], [[
320 chtype a = A_BOLD;
321 int b = KEY_LEFT;
322 chtype c = COLOR_PAIR(1) & A_COLOR;
323 attr_t d = WA_NORMAL;
324 cchar_t e;
325 wint_t f;
326 int g = getattrs(stdscr);
327 int h = getcurx(stdscr) + getmaxx(stdscr);
328 initscr();
329 init_pair(1, COLOR_WHITE, COLOR_RED);
330 wattr_set(stdscr, d, 0, NULL);
331 wget_wch(stdscr, &f);
332 ]])],
333 [ax_cv_header_ncursesw_h=yes],
334 [ax_cv_header_ncursesw_h=no])
335 ])
336 AS_IF([test "x$ax_cv_header_ncursesw_h" = xyes], [
337 ax_cv_curses_enhanced=yes
338 ax_cv_curses_color=yes
339 ax_cv_curses_obsolete=yes
340 AC_DEFINE([HAVE_CURSES_ENHANCED], [1], [Define to 1 if library supports X/Open Enhanced functions])
341 AC_DEFINE([HAVE_CURSES_COLOR], [1], [Define to 1 if library supports color (enhanced functions)])
342 AC_DEFINE([HAVE_CURSES_OBSOLETE], [1], [Define to 1 if library supports certain obsolete features])
343 AC_DEFINE([HAVE_NCURSESW_H], [1], [Define to 1 if <ncursesw.h> is present])
344 ])
346 AC_CACHE_CHECK([for working ncurses.h], [ax_cv_header_ncurses_h_with_ncursesw], [
347 AC_LINK_IFELSE([AC_LANG_PROGRAM([[
348 @%:@define _XOPEN_SOURCE_EXTENDED 1
349 @%:@include <ncurses.h>
350 ]], [[
351 chtype a = A_BOLD;
352 int b = KEY_LEFT;
353 chtype c = COLOR_PAIR(1) & A_COLOR;
354 attr_t d = WA_NORMAL;
355 cchar_t e;
356 wint_t f;
357 int g = getattrs(stdscr);
358 int h = getcurx(stdscr) + getmaxx(stdscr);
359 initscr();
360 init_pair(1, COLOR_WHITE, COLOR_RED);
361 wattr_set(stdscr, d, 0, NULL);
362 wget_wch(stdscr, &f);
363 ]])],
364 [ax_cv_header_ncurses_h_with_ncursesw=yes],
365 [ax_cv_header_ncurses_h_with_ncursesw=no])
366 ])
367 AS_IF([test "x$ax_cv_header_ncurses_h_with_ncursesw" = xyes], [
368 ax_cv_curses_enhanced=yes
369 ax_cv_curses_color=yes
370 ax_cv_curses_obsolete=yes
371 AC_DEFINE([HAVE_CURSES_ENHANCED], [1], [Define to 1 if library supports X/Open Enhanced functions])
372 AC_DEFINE([HAVE_CURSES_COLOR], [1], [Define to 1 if library supports color (enhanced functions)])
373 AC_DEFINE([HAVE_CURSES_OBSOLETE], [1], [Define to 1 if library supports certain obsolete features])
374 AC_DEFINE([HAVE_NCURSES_H], [1], [Define to 1 if <ncurses.h> is present])
375 ])
377 AS_IF([test "x$ax_cv_header_ncursesw_curses_h" = xno && test "x$ax_cv_header_ncursesw_h" = xno && test "x$ax_cv_header_ncurses_h_with_ncursesw" = xno], [
378 AC_MSG_WARN([could not find a working ncursesw/curses.h, ncursesw.h or ncurses.h])
379 ])
380 ])
381 ])
382 unset pkg_cv__ax_cv_ncursesw_libs
383 unset pkg_cv__ax_cv_ncursesw_cppflags
385 # Test for Ncurses
386 AS_IF([test "x$CURSES_LIBS" = x && test "x$with_ncurses" != xno && test "x$ax_cv_curses_which" = xno], [
387 _FIND_CURSES_FLAGS([ncurses])
389 AS_IF([test "x$ax_cv_ncurses" = xno && test "x$with_ncurses" = xyes], [
390 AC_MSG_ERROR([--with-ncurses specified but could not find Ncurses library])
391 ])
393 AS_IF([test "x$ax_cv_ncurses" = xyes], [
394 ax_cv_curses=yes
395 ax_cv_curses_which=ncurses
396 CURSES_LIBS="$pkg_cv__ax_cv_ncurses_libs"
397 CURSES_CFLAGS="$pkg_cv__ax_cv_ncurses_cppflags"
398 AC_DEFINE([HAVE_NCURSES], [1], [Define to 1 if the Ncurses library is present])
399 AC_DEFINE([HAVE_CURSES], [1], [Define to 1 if a SysV or X/Open compatible Curses library is present])
401 AC_CACHE_CHECK([for working ncurses/curses.h], [ax_cv_header_ncurses_curses_h], [
402 AC_LINK_IFELSE([AC_LANG_PROGRAM([[
403 @%:@include <ncurses/curses.h>
404 ]], [[
405 chtype a = A_BOLD;
406 int b = KEY_LEFT;
407 chtype c = COLOR_PAIR(1) & A_COLOR;
408 int g = getattrs(stdscr);
409 int h = getcurx(stdscr) + getmaxx(stdscr);
410 initscr();
411 init_pair(1, COLOR_WHITE, COLOR_RED);
412 ]])],
413 [ax_cv_header_ncurses_curses_h=yes],
414 [ax_cv_header_ncurses_curses_h=no])
415 ])
416 AS_IF([test "x$ax_cv_header_ncurses_curses_h" = xyes], [
417 ax_cv_curses_color=yes
418 ax_cv_curses_obsolete=yes
419 AC_DEFINE([HAVE_CURSES_COLOR], [1], [Define to 1 if library supports color (enhanced functions)])
420 AC_DEFINE([HAVE_CURSES_OBSOLETE], [1], [Define to 1 if library supports certain obsolete features])
421 AC_DEFINE([HAVE_NCURSES_CURSES_H], [1], [Define to 1 if <ncurses/curses.h> is present])
422 ])
424 AC_CACHE_CHECK([for working ncurses.h], [ax_cv_header_ncurses_h], [
425 AC_LINK_IFELSE([AC_LANG_PROGRAM([[
426 @%:@include <ncurses.h>
427 ]], [[
428 chtype a = A_BOLD;
429 int b = KEY_LEFT;
430 chtype c = COLOR_PAIR(1) & A_COLOR;
431 int g = getattrs(stdscr);
432 int h = getcurx(stdscr) + getmaxx(stdscr);
433 initscr();
434 init_pair(1, COLOR_WHITE, COLOR_RED);
435 ]])],
436 [ax_cv_header_ncurses_h=yes],
437 [ax_cv_header_ncurses_h=no])
438 ])
439 AS_IF([test "x$ax_cv_header_ncurses_h" = xyes], [
440 ax_cv_curses_color=yes
441 ax_cv_curses_obsolete=yes
442 AC_DEFINE([HAVE_CURSES_COLOR], [1], [Define to 1 if library supports color (enhanced functions)])
443 AC_DEFINE([HAVE_CURSES_OBSOLETE], [1], [Define to 1 if library supports certain obsolete features])
444 AC_DEFINE([HAVE_NCURSES_H], [1], [Define to 1 if <ncurses.h> is present])
445 ])
447 AS_IF([test "x$ax_cv_header_ncurses_curses_h" = xno && test "x$ax_cv_header_ncurses_h" = xno], [
448 AC_MSG_WARN([could not find a working ncurses/curses.h or ncurses.h])
449 ])
450 ])
451 ])
452 unset pkg_cv__ax_cv_ncurses_libs
453 unset pkg_cv__ax_cv_ncurses_cppflags
455 # Test for plain Curses (or if CURSES_LIBS was set by user)
456 AS_IF([test "x$with_plaincurses" != xno && test "x$ax_cv_curses_which" = xno], [
457 AS_IF([test "x$CURSES_LIBS" != x], [
458 LIBS="$ax_saved_LIBS $CURSES_LIBS"
459 ], [
460 LIBS="$ax_saved_LIBS -lcurses"
461 ])
463 AC_CACHE_CHECK([for Curses library], [ax_cv_plaincurses], [
464 AC_LINK_IFELSE([AC_LANG_CALL([], [initscr])],
465 [ax_cv_plaincurses=yes], [ax_cv_plaincurses=no])
466 ])
468 AS_IF([test "x$ax_cv_plaincurses" = xyes], [
469 ax_cv_curses=yes
470 ax_cv_curses_which=plaincurses
471 AS_IF([test "x$CURSES_LIBS" = x], [
472 CURSES_LIBS="-lcurses"
473 ])
474 AC_DEFINE([HAVE_CURSES], [1], [Define to 1 if a SysV or X/Open compatible Curses library is present])
476 # Check for base conformance (and header file)
478 AC_CACHE_CHECK([for working curses.h], [ax_cv_header_curses_h], [
479 AC_LINK_IFELSE([AC_LANG_PROGRAM([[
480 @%:@include <curses.h>
481 ]], [[
482 chtype a = A_BOLD;
483 int b = KEY_LEFT;
484 initscr();
485 ]])],
486 [ax_cv_header_curses_h=yes],
487 [ax_cv_header_curses_h=no])
488 ])
489 AS_IF([test "x$ax_cv_header_curses_h" = xyes], [
490 AC_DEFINE([HAVE_CURSES_H], [1], [Define to 1 if <curses.h> is present])
492 # Check for X/Open Enhanced conformance
494 AC_CACHE_CHECK([for X/Open Enhanced Curses conformance], [ax_cv_plaincurses_enhanced], [
495 AC_LINK_IFELSE([AC_LANG_PROGRAM([[
496 @%:@define _XOPEN_SOURCE_EXTENDED 1
497 @%:@include <curses.h>
498 @%:@ifndef _XOPEN_CURSES
499 @%:@error "this Curses library is not enhanced"
500 "this Curses library is not enhanced"
501 @%:@endif
502 ]], [[
503 chtype a = A_BOLD;
504 int b = KEY_LEFT;
505 chtype c = COLOR_PAIR(1) & A_COLOR;
506 attr_t d = WA_NORMAL;
507 cchar_t e;
508 wint_t f;
509 initscr();
510 init_pair(1, COLOR_WHITE, COLOR_RED);
511 wattr_set(stdscr, d, 0, NULL);
512 wget_wch(stdscr, &f);
513 ]])],
514 [ax_cv_plaincurses_enhanced=yes],
515 [ax_cv_plaincurses_enhanced=no])
516 ])
517 AS_IF([test "x$ax_cv_plaincurses_enhanced" = xyes], [
518 ax_cv_curses_enhanced=yes
519 ax_cv_curses_color=yes
520 AC_DEFINE([HAVE_CURSES_ENHANCED], [1], [Define to 1 if library supports X/Open Enhanced functions])
521 AC_DEFINE([HAVE_CURSES_COLOR], [1], [Define to 1 if library supports color (enhanced functions)])
522 ])
524 # Check for color functions
526 AC_CACHE_CHECK([for Curses color functions], [ax_cv_plaincurses_color], [
527 AC_LINK_IFELSE([AC_LANG_PROGRAM([[
528 @%:@define _XOPEN_SOURCE_EXTENDED 1
529 @%:@include <curses.h>
530 ]], [[
531 chtype a = A_BOLD;
532 int b = KEY_LEFT;
533 chtype c = COLOR_PAIR(1) & A_COLOR;
534 initscr();
535 init_pair(1, COLOR_WHITE, COLOR_RED);
536 ]])],
537 [ax_cv_plaincurses_color=yes],
538 [ax_cv_plaincurses_color=no])
539 ])
540 AS_IF([test "x$ax_cv_plaincurses_color" = xyes], [
541 ax_cv_curses_color=yes
542 AC_DEFINE([HAVE_CURSES_COLOR], [1], [Define to 1 if library supports color (enhanced functions)])
543 ])
545 # Check for obsolete functions
547 AC_CACHE_CHECK([for obsolete Curses functions], [ax_cv_plaincurses_obsolete], [
548 AC_LINK_IFELSE([AC_LANG_PROGRAM([[
549 @%:@include <curses.h>
550 ]], [[
551 chtype a = A_BOLD;
552 int b = KEY_LEFT;
553 int g = getattrs(stdscr);
554 int h = getcurx(stdscr) + getmaxx(stdscr);
555 initscr();
556 ]])],
557 [ax_cv_plaincurses_obsolete=yes],
558 [ax_cv_plaincurses_obsolete=no])
559 ])
560 AS_IF([test "x$ax_cv_plaincurses_obsolete" = xyes], [
561 ax_cv_curses_obsolete=yes
562 AC_DEFINE([HAVE_CURSES_OBSOLETE], [1], [Define to 1 if library supports certain obsolete features])
563 ])
564 ])
566 AS_IF([test "x$ax_cv_header_curses_h" = xno], [
567 AC_MSG_WARN([could not find a working curses.h])
568 ])
569 ])
570 ])
572 AS_IF([test "x$ax_cv_curses" != xyes], [ax_cv_curses=no])
573 AS_IF([test "x$ax_cv_curses_enhanced" != xyes], [ax_cv_curses_enhanced=no])
574 AS_IF([test "x$ax_cv_curses_color" != xyes], [ax_cv_curses_color=no])
575 AS_IF([test "x$ax_cv_curses_obsolete" != xyes], [ax_cv_curses_obsolete=no])
577 LIBS=$ax_saved_LIBS
578 CPPFLAGS=$ax_saved_CPPFLAGS
580 unset ax_saved_LIBS
581 unset ax_saved_CPPFLAGS
582 ])dnl