ncurses 6.0 - patch 20160507
[ncurses.git] / aclocal.m4
1 dnl***************************************************************************
2 dnl Copyright (c) 1998-2015,2016 Free Software Foundation, Inc.              *
3 dnl                                                                          *
4 dnl Permission is hereby granted, free of charge, to any person obtaining a  *
5 dnl copy of this software and associated documentation files (the            *
6 dnl "Software"), to deal in the Software without restriction, including      *
7 dnl without limitation the rights to use, copy, modify, merge, publish,      *
8 dnl distribute, distribute with modifications, sublicense, and/or sell       *
9 dnl copies of the Software, and to permit persons to whom the Software is    *
10 dnl furnished to do so, subject to the following conditions:                 *
11 dnl                                                                          *
12 dnl The above copyright notice and this permission notice shall be included  *
13 dnl in all copies or substantial portions of the Software.                   *
14 dnl                                                                          *
15 dnl THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
16 dnl OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
17 dnl MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
18 dnl IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
19 dnl DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
20 dnl OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
21 dnl THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
22 dnl                                                                          *
23 dnl Except as contained in this notice, the name(s) of the above copyright   *
24 dnl holders shall not be used in advertising or otherwise to promote the     *
25 dnl sale, use or other dealings in this Software without prior written       *
26 dnl authorization.                                                           *
27 dnl***************************************************************************
28 dnl
29 dnl Author: Thomas E. Dickey 1995-on
30 dnl
31 dnl $Id: aclocal.m4,v 1.788 2016/02/20 23:46:28 tom Exp $
32 dnl Macros used in NCURSES auto-configuration script.
33 dnl
34 dnl These macros are maintained separately from NCURSES.  The copyright on
35 dnl this file applies to the aggregation of macros and does not affect use of
36 dnl these macros in other applications.
37 dnl
38 dnl See http://invisible-island.net/autoconf/ for additional information.
39 dnl
40 dnl ---------------------------------------------------------------------------
41 dnl ---------------------------------------------------------------------------
42 dnl AM_LANGINFO_CODESET version: 4 updated: 2015/04/18 08:56:57
43 dnl -------------------
44 dnl Inserted as requested by gettext 0.10.40
45 dnl File from /usr/share/aclocal
46 dnl codeset.m4
47 dnl ====================
48 dnl serial AM1
49 dnl
50 dnl From Bruno Haible.
51 AC_DEFUN([AM_LANGINFO_CODESET],
52 [
53 AC_CACHE_CHECK([for nl_langinfo and CODESET], am_cv_langinfo_codeset,
54         [AC_TRY_LINK([#include <langinfo.h>],
55         [char* cs = nl_langinfo(CODESET);],
56         am_cv_langinfo_codeset=yes,
57         am_cv_langinfo_codeset=no)
58         ])
59         if test $am_cv_langinfo_codeset = yes; then
60                 AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
61                 [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
62         fi
63 ])dnl
64 dnl ---------------------------------------------------------------------------
65 dnl CF_ABI_DEFAULTS version: 2 updated: 2015/06/06 13:49:58
66 dnl ---------------
67 dnl Provide configure-script defaults for different ncurses ABIs.
68 AC_DEFUN([CF_ABI_DEFAULTS],[
69 AC_REQUIRE([CF_NCURSES_WITH_ABI_VERSION])
70 case x$cf_cv_abi_version in
71 (x[[6789]])
72         cf_dft_ext_colors=yes
73         cf_dft_ext_const=yes
74         cf_dft_ext_mouse=yes
75         cf_dft_ext_putwin=yes
76         cf_dft_ext_spfuncs=yes
77         cf_dft_filter_syms=yes
78         cf_dft_chtype=uint32_t
79         cf_dft_mmask_t=uint32_t
80         cf_dft_interop=yes
81         cf_dft_tparm_arg=intptr_t
82         cf_dft_with_lp64=yes
83         ;;
84 (*)
85         cf_dft_ext_colors=no
86         cf_dft_ext_const=no
87         cf_dft_ext_mouse=no
88         cf_dft_ext_putwin=no
89         cf_dft_ext_spfuncs=no
90         cf_dft_filter_syms=no
91         cf_dft_chtype=auto
92         cf_dft_mmask_t=auto
93         cf_dft_interop=no
94         cf_dft_tparm_arg=long
95         cf_dft_with_lp64=no
96         ;;
97 esac
98 ])dnl
99 dnl ---------------------------------------------------------------------------
100 dnl CF_ACVERSION_CHECK version: 5 updated: 2014/06/04 19:11:49
101 dnl ------------------
102 dnl Conditionally generate script according to whether we're using a given autoconf.
103 dnl
104 dnl $1 = version to compare against
105 dnl $2 = code to use if AC_ACVERSION is at least as high as $1.
106 dnl $3 = code to use if AC_ACVERSION is older than $1.
107 define([CF_ACVERSION_CHECK],
108 [
109 ifdef([AC_ACVERSION], ,[ifdef([AC_AUTOCONF_VERSION],[m4_copy([AC_AUTOCONF_VERSION],[AC_ACVERSION])],[m4_copy([m4_PACKAGE_VERSION],[AC_ACVERSION])])])dnl
110 ifdef([m4_version_compare],
111 [m4_if(m4_version_compare(m4_defn([AC_ACVERSION]), [$1]), -1, [$3], [$2])],
112 [CF_ACVERSION_COMPARE(
113 AC_PREREQ_CANON(AC_PREREQ_SPLIT([$1])),
114 AC_PREREQ_CANON(AC_PREREQ_SPLIT(AC_ACVERSION)), AC_ACVERSION, [$2], [$3])])])dnl
115 dnl ---------------------------------------------------------------------------
116 dnl CF_ACVERSION_COMPARE version: 3 updated: 2012/10/03 18:39:53
117 dnl --------------------
118 dnl CF_ACVERSION_COMPARE(MAJOR1, MINOR1, TERNARY1,
119 dnl                      MAJOR2, MINOR2, TERNARY2,
120 dnl                      PRINTABLE2, not FOUND, FOUND)
121 define([CF_ACVERSION_COMPARE],
122 [ifelse(builtin([eval], [$2 < $5]), 1,
123 [ifelse([$8], , ,[$8])],
124 [ifelse([$9], , ,[$9])])])dnl
125 dnl ---------------------------------------------------------------------------
126 dnl CF_ADA_INCLUDE_DIRS version: 8 updated: 2013/10/14 04:24:07
127 dnl -------------------
128 dnl Construct the list of include-options for the C programs in the Ada95
129 dnl binding.
130 AC_DEFUN([CF_ADA_INCLUDE_DIRS],
131 [
132 ACPPFLAGS="-I. -I../include -I../../include $ACPPFLAGS"
133 if test "$srcdir" != "."; then
134         ACPPFLAGS="-I\${srcdir}/../../include $ACPPFLAGS"
135 fi
136 if test "$GCC" != yes; then
137         ACPPFLAGS="$ACPPFLAGS -I\${includedir}"
138 elif test "$includedir" != "/usr/include"; then
139         if test "$includedir" = '${prefix}/include' ; then
140                 if test x$prefix != x/usr ; then
141                         ACPPFLAGS="$ACPPFLAGS -I\${includedir}"
142                 fi
143         else
144                 ACPPFLAGS="$ACPPFLAGS -I\${includedir}"
145         fi
146 fi
147 AC_SUBST(ACPPFLAGS)
148 ])dnl
149 dnl ---------------------------------------------------------------------------
150 dnl CF_ADD_ADAFLAGS version: 1 updated: 2010/06/19 15:22:18
151 dnl ---------------
152 dnl Add to $ADAFLAGS, which is substituted into makefile and scripts.
153 AC_DEFUN([CF_ADD_ADAFLAGS],[
154         ADAFLAGS="$ADAFLAGS $1"
155         AC_SUBST(ADAFLAGS)
156 ])dnl
157 dnl ---------------------------------------------------------------------------
158 dnl CF_ADD_CFLAGS version: 12 updated: 2015/04/12 15:39:00
159 dnl -------------
160 dnl Copy non-preprocessor flags to $CFLAGS, preprocessor flags to $CPPFLAGS
161 dnl The second parameter if given makes this macro verbose.
162 dnl
163 dnl Put any preprocessor definitions that use quoted strings in $EXTRA_CPPFLAGS,
164 dnl to simplify use of $CPPFLAGS in compiler checks, etc., that are easily
165 dnl confused by the quotes (which require backslashes to keep them usable).
166 AC_DEFUN([CF_ADD_CFLAGS],
167 [
168 cf_fix_cppflags=no
169 cf_new_cflags=
170 cf_new_cppflags=
171 cf_new_extra_cppflags=
172
173 for cf_add_cflags in $1
174 do
175 case $cf_fix_cppflags in
176 (no)
177         case $cf_add_cflags in
178         (-undef|-nostdinc*|-I*|-D*|-U*|-E|-P|-C)
179                 case $cf_add_cflags in
180                 (-D*)
181                         cf_tst_cflags=`echo ${cf_add_cflags} |sed -e 's/^-D[[^=]]*='\''\"[[^"]]*//'`
182
183                         test "x${cf_add_cflags}" != "x${cf_tst_cflags}" \
184                                 && test -z "${cf_tst_cflags}" \
185                                 && cf_fix_cppflags=yes
186
187                         if test $cf_fix_cppflags = yes ; then
188                                 cf_new_extra_cppflags="$cf_new_extra_cppflags $cf_add_cflags"
189                                 continue
190                         elif test "${cf_tst_cflags}" = "\"'" ; then
191                                 cf_new_extra_cppflags="$cf_new_extra_cppflags $cf_add_cflags"
192                                 continue
193                         fi
194                         ;;
195                 esac
196                 case "$CPPFLAGS" in
197                 (*$cf_add_cflags)
198                         ;;
199                 (*)
200                         case $cf_add_cflags in
201                         (-D*)
202                                 cf_tst_cppflags=`echo "x$cf_add_cflags" | sed -e 's/^...//' -e 's/=.*//'`
203                                 CF_REMOVE_DEFINE(CPPFLAGS,$CPPFLAGS,$cf_tst_cppflags)
204                                 ;;
205                         esac
206                         cf_new_cppflags="$cf_new_cppflags $cf_add_cflags"
207                         ;;
208                 esac
209                 ;;
210         (*)
211                 cf_new_cflags="$cf_new_cflags $cf_add_cflags"
212                 ;;
213         esac
214         ;;
215 (yes)
216         cf_new_extra_cppflags="$cf_new_extra_cppflags $cf_add_cflags"
217
218         cf_tst_cflags=`echo ${cf_add_cflags} |sed -e 's/^[[^"]]*"'\''//'`
219
220         test "x${cf_add_cflags}" != "x${cf_tst_cflags}" \
221                 && test -z "${cf_tst_cflags}" \
222                 && cf_fix_cppflags=no
223         ;;
224 esac
225 done
226
227 if test -n "$cf_new_cflags" ; then
228         ifelse([$2],,,[CF_VERBOSE(add to \$CFLAGS $cf_new_cflags)])
229         CFLAGS="$CFLAGS $cf_new_cflags"
230 fi
231
232 if test -n "$cf_new_cppflags" ; then
233         ifelse([$2],,,[CF_VERBOSE(add to \$CPPFLAGS $cf_new_cppflags)])
234         CPPFLAGS="$CPPFLAGS $cf_new_cppflags"
235 fi
236
237 if test -n "$cf_new_extra_cppflags" ; then
238         ifelse([$2],,,[CF_VERBOSE(add to \$EXTRA_CPPFLAGS $cf_new_extra_cppflags)])
239         EXTRA_CPPFLAGS="$cf_new_extra_cppflags $EXTRA_CPPFLAGS"
240 fi
241
242 AC_SUBST(EXTRA_CPPFLAGS)
243
244 ])dnl
245 dnl ---------------------------------------------------------------------------
246 dnl CF_ADD_INCDIR version: 14 updated: 2015/05/25 20:53:04
247 dnl -------------
248 dnl Add an include-directory to $CPPFLAGS.  Don't add /usr/include, since it's
249 dnl redundant.  We don't normally need to add -I/usr/local/include for gcc,
250 dnl but old versions (and some misinstalled ones) need that.  To make things
251 dnl worse, gcc 3.x may give error messages if -I/usr/local/include is added to
252 dnl the include-path).
253 AC_DEFUN([CF_ADD_INCDIR],
254 [
255 if test -n "$1" ; then
256   for cf_add_incdir in $1
257   do
258         while test $cf_add_incdir != /usr/include
259         do
260           if test -d $cf_add_incdir
261           then
262                 cf_have_incdir=no
263                 if test -n "$CFLAGS$CPPFLAGS" ; then
264                   # a loop is needed to ensure we can add subdirs of existing dirs
265                   for cf_test_incdir in $CFLAGS $CPPFLAGS ; do
266                         if test ".$cf_test_incdir" = ".-I$cf_add_incdir" ; then
267                           cf_have_incdir=yes; break
268                         fi
269                   done
270                 fi
271
272                 if test "$cf_have_incdir" = no ; then
273                   if test "$cf_add_incdir" = /usr/local/include ; then
274                         if test "$GCC" = yes
275                         then
276                           cf_save_CPPFLAGS=$CPPFLAGS
277                           CPPFLAGS="$CPPFLAGS -I$cf_add_incdir"
278                           AC_TRY_COMPILE([#include <stdio.h>],
279                                   [printf("Hello")],
280                                   [],
281                                   [cf_have_incdir=yes])
282                           CPPFLAGS=$cf_save_CPPFLAGS
283                         fi
284                   fi
285                 fi
286
287                 if test "$cf_have_incdir" = no ; then
288                   CF_VERBOSE(adding $cf_add_incdir to include-path)
289                   ifelse([$2],,CPPFLAGS,[$2])="$ifelse([$2],,CPPFLAGS,[$2]) -I$cf_add_incdir"
290
291                   cf_top_incdir=`echo $cf_add_incdir | sed -e 's%/include/.*$%/include%'`
292                   test "$cf_top_incdir" = "$cf_add_incdir" && break
293                   cf_add_incdir="$cf_top_incdir"
294                 else
295                   break
296                 fi
297           else
298                 break
299           fi
300         done
301   done
302 fi
303 ])dnl
304 dnl ---------------------------------------------------------------------------
305 dnl CF_ADD_LIB version: 2 updated: 2010/06/02 05:03:05
306 dnl ----------
307 dnl Add a library, used to enforce consistency.
308 dnl
309 dnl $1 = library to add, without the "-l"
310 dnl $2 = variable to update (default $LIBS)
311 AC_DEFUN([CF_ADD_LIB],[CF_ADD_LIBS(-l$1,ifelse($2,,LIBS,[$2]))])dnl
312 dnl ---------------------------------------------------------------------------
313 dnl CF_ADD_LIBDIR version: 10 updated: 2015/04/18 08:56:57
314 dnl -------------
315 dnl     Adds to the library-path
316 dnl
317 dnl     Some machines have trouble with multiple -L options.
318 dnl
319 dnl $1 is the (list of) directory(s) to add
320 dnl $2 is the optional name of the variable to update (default LDFLAGS)
321 dnl
322 AC_DEFUN([CF_ADD_LIBDIR],
323 [
324 if test -n "$1" ; then
325         for cf_add_libdir in $1
326         do
327                 if test $cf_add_libdir = /usr/lib ; then
328                         :
329                 elif test -d $cf_add_libdir
330                 then
331                         cf_have_libdir=no
332                         if test -n "$LDFLAGS$LIBS" ; then
333                                 # a loop is needed to ensure we can add subdirs of existing dirs
334                                 for cf_test_libdir in $LDFLAGS $LIBS ; do
335                                         if test ".$cf_test_libdir" = ".-L$cf_add_libdir" ; then
336                                                 cf_have_libdir=yes; break
337                                         fi
338                                 done
339                         fi
340                         if test "$cf_have_libdir" = no ; then
341                                 CF_VERBOSE(adding $cf_add_libdir to library-path)
342                                 ifelse([$2],,LDFLAGS,[$2])="-L$cf_add_libdir $ifelse([$2],,LDFLAGS,[$2])"
343                         fi
344                 fi
345         done
346 fi
347 ])dnl
348 dnl ---------------------------------------------------------------------------
349 dnl CF_ADD_LIBS version: 2 updated: 2014/07/13 14:33:27
350 dnl -----------
351 dnl Add one or more libraries, used to enforce consistency.  Libraries are
352 dnl prepended to an existing list, since their dependencies are assumed to
353 dnl already exist in the list.
354 dnl
355 dnl $1 = libraries to add, with the "-l", etc.
356 dnl $2 = variable to update (default $LIBS)
357 AC_DEFUN([CF_ADD_LIBS],[
358 cf_add_libs="$1"
359 # Filter out duplicates - this happens with badly-designed ".pc" files...
360 for cf_add_1lib in [$]ifelse($2,,LIBS,[$2])
361 do
362         for cf_add_2lib in $cf_add_libs
363         do
364                 if test "x$cf_add_1lib" = "x$cf_add_2lib"
365                 then
366                         cf_add_1lib=
367                         break
368                 fi
369         done
370         test -n "$cf_add_1lib" && cf_add_libs="$cf_add_libs $cf_add_1lib"
371 done
372 ifelse($2,,LIBS,[$2])="$cf_add_libs"
373 ])dnl
374 dnl ---------------------------------------------------------------------------
375 dnl CF_ADD_SUBDIR_PATH version: 4 updated: 2013/10/08 17:47:05
376 dnl ------------------
377 dnl Append to a search-list for a nonstandard header/lib-file
378 dnl     $1 = the variable to return as result
379 dnl     $2 = the package name
380 dnl     $3 = the subdirectory, e.g., bin, include or lib
381 dnl $4 = the directory under which we will test for subdirectories
382 dnl $5 = a directory that we do not want $4 to match
383 AC_DEFUN([CF_ADD_SUBDIR_PATH],
384 [
385 test "x$4" != "x$5" && \
386 test -d "$4" && \
387 ifelse([$5],NONE,,[(test -z "$5" || test x$5 = xNONE || test "x$4" != "x$5") &&]) {
388         test -n "$verbose" && echo "    ... testing for $3-directories under $4"
389         test -d $4/$3 &&          $1="[$]$1 $4/$3"
390         test -d $4/$3/$2 &&       $1="[$]$1 $4/$3/$2"
391         test -d $4/$3/$2/$3 &&    $1="[$]$1 $4/$3/$2/$3"
392         test -d $4/$2/$3 &&       $1="[$]$1 $4/$2/$3"
393         test -d $4/$2/$3/$2 &&    $1="[$]$1 $4/$2/$3/$2"
394 }
395 ])dnl
396 dnl ---------------------------------------------------------------------------
397 dnl CF_ARG_DISABLE version: 3 updated: 1999/03/30 17:24:31
398 dnl --------------
399 dnl Allow user to disable a normally-on option.
400 AC_DEFUN([CF_ARG_DISABLE],
401 [CF_ARG_OPTION($1,[$2],[$3],[$4],yes)])dnl
402 dnl ---------------------------------------------------------------------------
403 dnl CF_ARG_OPTION version: 5 updated: 2015/05/10 19:52:14
404 dnl -------------
405 dnl Restricted form of AC_ARG_ENABLE that ensures user doesn't give bogus
406 dnl values.
407 dnl
408 dnl Parameters:
409 dnl $1 = option name
410 dnl $2 = help-string
411 dnl $3 = action to perform if option is not default
412 dnl $4 = action if perform if option is default
413 dnl $5 = default option value (either 'yes' or 'no')
414 AC_DEFUN([CF_ARG_OPTION],
415 [AC_ARG_ENABLE([$1],[$2],[test "$enableval" != ifelse([$5],no,yes,no) && enableval=ifelse([$5],no,no,yes)
416         if test "$enableval" != "$5" ; then
417 ifelse([$3],,[    :]dnl
418 ,[    $3]) ifelse([$4],,,[
419         else
420                 $4])
421         fi],[enableval=$5 ifelse([$4],,,[
422         $4
423 ])dnl
424 ])])dnl
425 dnl ---------------------------------------------------------------------------
426 dnl CF_AR_FLAGS version: 6 updated: 2015/10/10 15:25:05
427 dnl -----------
428 dnl Check for suitable "ar" (archiver) options for updating an archive.
429 dnl
430 dnl In particular, handle some obsolete cases where the "-" might be omitted,
431 dnl as well as a workaround for breakage of make's archive rules by the GNU
432 dnl binutils "ar" program.
433 AC_DEFUN([CF_AR_FLAGS],[
434 AC_REQUIRE([CF_PROG_AR])
435
436 AC_CACHE_CHECK(for options to update archives, cf_cv_ar_flags,[
437         cf_cv_ar_flags=unknown
438         for cf_ar_flags in -curvU -curv curv -crv crv -cqv cqv -rv rv
439         do
440
441                 # check if $ARFLAGS already contains this choice
442                 if test "x$ARFLAGS" != "x" ; then
443                         cf_check_ar_flags=`echo "x$ARFLAGS" | sed -e "s/$cf_ar_flags\$//" -e "s/$cf_ar_flags / /"`
444                         if test "x$ARFLAGS" != "$cf_check_ar_flags" ; then
445                                 cf_cv_ar_flags=
446                                 break
447                         fi
448                 fi
449
450                 rm -f conftest.$ac_cv_objext
451                 rm -f conftest.a
452
453                 cat >conftest.$ac_ext <<EOF
454 #line __oline__ "configure"
455 int     testdata[[3]] = { 123, 456, 789 };
456 EOF
457                 if AC_TRY_EVAL(ac_compile) ; then
458                         echo "$AR $ARFLAGS $cf_ar_flags conftest.a conftest.$ac_cv_objext" >&AC_FD_CC
459                         $AR $ARFLAGS $cf_ar_flags conftest.a conftest.$ac_cv_objext 2>&AC_FD_CC 1>/dev/null
460                         if test -f conftest.a ; then
461                                 cf_cv_ar_flags=$cf_ar_flags
462                                 break
463                         fi
464                 else
465                         CF_VERBOSE(cannot compile test-program)
466                         break
467                 fi
468         done
469         rm -f conftest.a conftest.$ac_ext conftest.$ac_cv_objext
470 ])
471
472 if test -n "$ARFLAGS" ; then
473         if test -n "$cf_cv_ar_flags" ; then
474                 ARFLAGS="$ARFLAGS $cf_cv_ar_flags"
475         fi
476 else
477         ARFLAGS=$cf_cv_ar_flags
478 fi
479
480 AC_SUBST(ARFLAGS)
481 ])
482 dnl ---------------------------------------------------------------------------
483 dnl CF_AWK_BIG_PRINTF version: 5 updated: 2015/04/17 21:13:04
484 dnl -----------------
485 dnl Check if awk can handle big strings using printf.  Some older versions of
486 dnl awk choke on large strings passed via "%s".
487 dnl
488 dnl $1 = desired string size
489 dnl $2 = variable to set with result
490 AC_DEFUN([CF_AWK_BIG_PRINTF],
491 [
492         case x$AWK in
493         (x)
494                 eval $2=no
495                 ;;
496         (*)
497                 if ( ${AWK} 'BEGIN { xx = "x"; while (length(xx) < $1) { xx = xx "x"; }; printf("%s\n", xx); }' 2>/dev/null \
498                         | $AWK '{ printf "%d\n", length([$]0); }' 2>/dev/null | $AWK 'BEGIN { eqls=0; recs=0; } { recs++; if ([$]0 == 12000) eqls++; } END { if (recs != 1 || eqls != 1) exit 1; }' 2>/dev/null >/dev/null ) ; then
499                         eval $2=yes
500                 else
501                         eval $2=no
502                 fi
503                 ;;
504         esac
505 ])dnl
506 dnl ---------------------------------------------------------------------------
507 dnl CF_BOOL_DECL version: 8 updated: 2004/01/30 15:51:18
508 dnl ------------
509 dnl Test if 'bool' is a builtin type in the configured C++ compiler.  Some
510 dnl older compilers (e.g., gcc 2.5.8) don't support 'bool' directly; gcc
511 dnl 2.6.3 does, in anticipation of the ANSI C++ standard.
512 dnl
513 dnl Treat the configuration-variable specially here, since we're directly
514 dnl substituting its value (i.e., 1/0).
515 dnl
516 dnl $1 is the shell variable to store the result in, if not $cv_cv_builtin_bool
517 AC_DEFUN([CF_BOOL_DECL],
518 [
519 AC_MSG_CHECKING(if we should include stdbool.h)
520
521 AC_CACHE_VAL(cf_cv_header_stdbool_h,[
522         AC_TRY_COMPILE([],[bool foo = false],
523                 [cf_cv_header_stdbool_h=0],
524                 [AC_TRY_COMPILE([
525 #ifndef __BEOS__
526 #include <stdbool.h>
527 #endif
528 ],[bool foo = false],
529                         [cf_cv_header_stdbool_h=1],
530                         [cf_cv_header_stdbool_h=0])])])
531
532 if test "$cf_cv_header_stdbool_h" = 1
533 then    AC_MSG_RESULT(yes)
534 else    AC_MSG_RESULT(no)
535 fi
536
537 AC_MSG_CHECKING([for builtin bool type])
538
539 AC_CACHE_VAL(ifelse($1,,cf_cv_builtin_bool,[$1]),[
540         AC_TRY_COMPILE([
541 #include <stdio.h>
542 #include <sys/types.h>
543 ],[bool x = false],
544                 [ifelse($1,,cf_cv_builtin_bool,[$1])=1],
545                 [ifelse($1,,cf_cv_builtin_bool,[$1])=0])
546         ])
547
548 if test "$ifelse($1,,cf_cv_builtin_bool,[$1])" = 1
549 then    AC_MSG_RESULT(yes)
550 else    AC_MSG_RESULT(no)
551 fi
552 ])dnl
553 dnl ---------------------------------------------------------------------------
554 dnl CF_BOOL_SIZE version: 14 updated: 2015/04/17 21:13:04
555 dnl ------------
556 dnl Test for the size of 'bool' in the configured C++ compiler (e.g., a type).
557 dnl Don't bother looking for bool.h, since it's been deprecated.
558 dnl
559 dnl If the current compiler is C rather than C++, we get the bool definition
560 dnl from <stdbool.h>.
561 AC_DEFUN([CF_BOOL_SIZE],
562 [
563 AC_MSG_CHECKING([for size of bool])
564 AC_CACHE_VAL(cf_cv_type_of_bool,[
565         rm -f cf_test.out
566         AC_TRY_RUN([
567 #include <stdlib.h>
568 #include <stdio.h>
569
570 #if defined(__cplusplus)
571
572 #ifdef HAVE_GXX_BUILTIN_H
573 #include <g++/builtin.h>
574 #elif HAVE_GPP_BUILTIN_H
575 #include <gpp/builtin.h>
576 #elif HAVE_BUILTIN_H
577 #include <builtin.h>
578 #endif
579
580 #else
581
582 #if $cf_cv_header_stdbool_h
583 #include <stdbool.h>
584 #endif
585
586 #endif
587
588 int main()
589 {
590         FILE *fp = fopen("cf_test.out", "w");
591         if (fp != 0) {
592                 bool x = true;
593                 if ((bool)(-x) >= 0)
594                         fputs("unsigned ", fp);
595                 if (sizeof(x) == sizeof(int))       fputs("int",  fp);
596                 else if (sizeof(x) == sizeof(char)) fputs("char", fp);
597                 else if (sizeof(x) == sizeof(short))fputs("short",fp);
598                 else if (sizeof(x) == sizeof(long)) fputs("long", fp);
599                 fclose(fp);
600         }
601         ${cf_cv_main_return:-return}(0);
602 }
603                 ],
604                 [cf_cv_type_of_bool=`cat cf_test.out`
605                  if test -z "$cf_cv_type_of_bool"; then
606                    cf_cv_type_of_bool=unknown
607                  fi],
608                 [cf_cv_type_of_bool=unknown],
609                 [cf_cv_type_of_bool=unknown])
610         ])
611         rm -f cf_test.out
612 AC_MSG_RESULT($cf_cv_type_of_bool)
613 if test "$cf_cv_type_of_bool" = unknown ; then
614         case .$NCURSES_BOOL in
615         (.auto|.) NCURSES_BOOL=unsigned;;
616         esac
617         AC_MSG_WARN(Assuming $NCURSES_BOOL for type of bool)
618         cf_cv_type_of_bool=$NCURSES_BOOL
619 fi
620 ])dnl
621 dnl ---------------------------------------------------------------------------
622 dnl CF_BUILD_CC version: 7 updated: 2012/10/06 15:31:55
623 dnl -----------
624 dnl If we're cross-compiling, allow the user to override the tools and their
625 dnl options.  The configure script is oriented toward identifying the host
626 dnl compiler, etc., but we need a build compiler to generate parts of the
627 dnl source.
628 dnl
629 dnl $1 = default for $CPPFLAGS
630 dnl $2 = default for $LIBS
631 AC_DEFUN([CF_BUILD_CC],[
632 CF_ACVERSION_CHECK(2.52,,
633         [AC_REQUIRE([CF_PROG_EXT])])
634 if test "$cross_compiling" = yes ; then
635
636         # defaults that we might want to override
637         : ${BUILD_CFLAGS:=''}
638         : ${BUILD_CPPFLAGS:='ifelse([$1],,,[$1])'}
639         : ${BUILD_LDFLAGS:=''}
640         : ${BUILD_LIBS:='ifelse([$2],,,[$2])'}
641         : ${BUILD_EXEEXT:='$x'}
642         : ${BUILD_OBJEXT:='o'}
643
644         AC_ARG_WITH(build-cc,
645                 [  --with-build-cc=XXX     the build C compiler ($BUILD_CC)],
646                 [BUILD_CC="$withval"],
647                 [AC_CHECK_PROGS(BUILD_CC, gcc cc cl)])
648         AC_MSG_CHECKING(for native build C compiler)
649         AC_MSG_RESULT($BUILD_CC)
650
651         AC_MSG_CHECKING(for native build C preprocessor)
652         AC_ARG_WITH(build-cpp,
653                 [  --with-build-cpp=XXX    the build C preprocessor ($BUILD_CPP)],
654                 [BUILD_CPP="$withval"],
655                 [BUILD_CPP='${BUILD_CC} -E'])
656         AC_MSG_RESULT($BUILD_CPP)
657
658         AC_MSG_CHECKING(for native build C flags)
659         AC_ARG_WITH(build-cflags,
660                 [  --with-build-cflags=XXX the build C compiler-flags ($BUILD_CFLAGS)],
661                 [BUILD_CFLAGS="$withval"])
662         AC_MSG_RESULT($BUILD_CFLAGS)
663
664         AC_MSG_CHECKING(for native build C preprocessor-flags)
665         AC_ARG_WITH(build-cppflags,
666                 [  --with-build-cppflags=XXX the build C preprocessor-flags ($BUILD_CPPFLAGS)],
667                 [BUILD_CPPFLAGS="$withval"])
668         AC_MSG_RESULT($BUILD_CPPFLAGS)
669
670         AC_MSG_CHECKING(for native build linker-flags)
671         AC_ARG_WITH(build-ldflags,
672                 [  --with-build-ldflags=XXX the build linker-flags ($BUILD_LDFLAGS)],
673                 [BUILD_LDFLAGS="$withval"])
674         AC_MSG_RESULT($BUILD_LDFLAGS)
675
676         AC_MSG_CHECKING(for native build linker-libraries)
677         AC_ARG_WITH(build-libs,
678                 [  --with-build-libs=XXX   the build libraries (${BUILD_LIBS})],
679                 [BUILD_LIBS="$withval"])
680         AC_MSG_RESULT($BUILD_LIBS)
681
682         # this assumes we're on Unix.
683         BUILD_EXEEXT=
684         BUILD_OBJEXT=o
685
686         : ${BUILD_CC:='${CC}'}
687
688         if ( test "$BUILD_CC" = "$CC" || test "$BUILD_CC" = '${CC}' ) ; then
689                 AC_MSG_ERROR([Cross-build requires two compilers.
690 Use --with-build-cc to specify the native compiler.])
691         fi
692
693 else
694         : ${BUILD_CC:='${CC}'}
695         : ${BUILD_CPP:='${CPP}'}
696         : ${BUILD_CFLAGS:='${CFLAGS}'}
697         : ${BUILD_CPPFLAGS:='${CPPFLAGS}'}
698         : ${BUILD_LDFLAGS:='${LDFLAGS}'}
699         : ${BUILD_LIBS:='${LIBS}'}
700         : ${BUILD_EXEEXT:='$x'}
701         : ${BUILD_OBJEXT:='o'}
702 fi
703
704 AC_SUBST(BUILD_CC)
705 AC_SUBST(BUILD_CPP)
706 AC_SUBST(BUILD_CFLAGS)
707 AC_SUBST(BUILD_CPPFLAGS)
708 AC_SUBST(BUILD_LDFLAGS)
709 AC_SUBST(BUILD_LIBS)
710 AC_SUBST(BUILD_EXEEXT)
711 AC_SUBST(BUILD_OBJEXT)
712 ])dnl
713 dnl ---------------------------------------------------------------------------
714 dnl CF_CC_ENV_FLAGS version: 2 updated: 2015/04/12 15:39:00
715 dnl ---------------
716 dnl Check for user's environment-breakage by stuffing CFLAGS/CPPFLAGS content
717 dnl into CC.  This will not help with broken scripts that wrap the compiler with
718 dnl options, but eliminates a more common category of user confusion.
719 AC_DEFUN([CF_CC_ENV_FLAGS],
720 [
721 # This should have been defined by AC_PROG_CC
722 : ${CC:=cc}
723
724 AC_MSG_CHECKING(\$CC variable)
725 case "$CC" in
726 (*[[\ \ ]]-[[IUD]]*)
727         AC_MSG_RESULT(broken)
728         AC_MSG_WARN(your environment misuses the CC variable to hold CFLAGS/CPPFLAGS options)
729         # humor him...
730         cf_flags=`echo "$CC" | sed -e 's/^[[^   ]]*[[   ]]//'`
731         CC=`echo "$CC" | sed -e 's/[[   ]].*//'`
732         CF_ADD_CFLAGS($cf_flags)
733         ;;
734 (*)
735         AC_MSG_RESULT(ok)
736         ;;
737 esac
738 ])dnl
739 dnl ---------------------------------------------------------------------------
740 dnl CF_CFG_DEFAULTS version: 11 updated: 2015/04/17 21:13:04
741 dnl ---------------
742 dnl Determine the default configuration into which we'll install ncurses.  This
743 dnl can be overridden by the user's command-line options.  There's two items to
744 dnl look for:
745 dnl     1. the prefix (e.g., /usr)
746 dnl     2. the header files (e.g., /usr/include/ncurses)
747 dnl We'll look for a previous installation of ncurses and use the same defaults.
748 dnl
749 dnl We don't use AC_PREFIX_DEFAULT, because it gets evaluated too soon, and
750 dnl we don't use AC_PREFIX_PROGRAM, because we cannot distinguish ncurses's
751 dnl programs from a vendor's.
752 AC_DEFUN([CF_CFG_DEFAULTS],
753 [
754 AC_MSG_CHECKING(for prefix)
755 if test "x$prefix" = "xNONE" ; then
756         case "$cf_cv_system_name" in
757                 # non-vendor systems don't have a conflict
758         (openbsd*|freebsd*|mirbsd*|linux*|cygwin*|msys*|k*bsd*-gnu|mingw*)
759                 prefix=/usr
760                 ;;
761         (*)     prefix=$ac_default_prefix
762                 ;;
763         esac
764 fi
765 AC_MSG_RESULT($prefix)
766
767 if test "x$prefix" = "xNONE" ; then
768 AC_MSG_CHECKING(for default include-directory)
769 test -n "$verbose" && echo 1>&AC_FD_MSG
770 for cf_symbol in \
771         $includedir \
772         $includedir/ncurses \
773         $prefix/include \
774         $prefix/include/ncurses \
775         /usr/local/include \
776         /usr/local/include/ncurses \
777         /usr/include \
778         /usr/include/ncurses
779 do
780         cf_dir=`eval echo $cf_symbol`
781         if test -f $cf_dir/curses.h ; then
782         if ( fgrep NCURSES_VERSION $cf_dir/curses.h 2>&1 >/dev/null ) ; then
783                 includedir="$cf_symbol"
784                 test -n "$verbose"  && echo $ac_n "     found " 1>&AC_FD_MSG
785                 break
786         fi
787         fi
788         test -n "$verbose"  && echo "   tested $cf_dir" 1>&AC_FD_MSG
789 done
790 AC_MSG_RESULT($includedir)
791 fi
792 ])dnl
793 dnl ---------------------------------------------------------------------------
794 dnl CF_CGETENT version: 5 updated: 2012/10/06 17:56:13
795 dnl ----------
796 dnl Check if the terminal-capability database functions are available.  If not,
797 dnl ncurses has a much-reduced version.
798 AC_DEFUN([CF_CGETENT],[
799 AC_CACHE_CHECK(for terminal-capability database functions,cf_cv_cgetent,[
800 AC_TRY_LINK([
801 #include <stdlib.h>],[
802         char temp[128];
803         char *buf = temp;
804         char *db_array = temp;
805         cgetent(&buf, &db_array, "vt100");
806         cgetcap(buf, "tc", '=');
807         cgetmatch(buf, "tc");
808         ],
809         [cf_cv_cgetent=yes],
810         [cf_cv_cgetent=no])
811 ])
812
813 if test "$cf_cv_cgetent" = yes
814 then
815         AC_DEFINE(HAVE_BSD_CGETENT,1,[Define to 1 if we have BSD cgetent])
816 AC_CACHE_CHECK(if cgetent uses const parameter,cf_cv_cgetent_const,[
817 AC_TRY_LINK([
818 #include <stdlib.h>],[
819         char temp[128];
820         char *buf = temp;
821 #ifndef _NETBSD_SOURCE                  /* given, since April 2004 in stdlib.h */
822         const char *db_array = temp;
823         cgetent(&buf, &db_array, "vt100");
824 #endif
825         cgetcap(buf, "tc", '=');
826         cgetmatch(buf, "tc");
827         ],
828         [cf_cv_cgetent_const=yes],
829         [cf_cv_cgetent_const=no])
830 ])
831         if test "$cf_cv_cgetent_const" = yes
832         then
833                 AC_DEFINE_UNQUOTED(CGETENT_CONST,const,[Define to const if needed for some BSD cgetent variations])
834         fi
835 fi
836 ])dnl
837 dnl ---------------------------------------------------------------------------
838 dnl CF_CHECK_CACHE version: 12 updated: 2012/10/02 20:55:03
839 dnl --------------
840 dnl Check if we're accidentally using a cache from a different machine.
841 dnl Derive the system name, as a check for reusing the autoconf cache.
842 dnl
843 dnl If we've packaged config.guess and config.sub, run that (since it does a
844 dnl better job than uname).  Normally we'll use AC_CANONICAL_HOST, but allow
845 dnl an extra parameter that we may override, e.g., for AC_CANONICAL_SYSTEM
846 dnl which is useful in cross-compiles.
847 dnl
848 dnl Note: we would use $ac_config_sub, but that is one of the places where
849 dnl autoconf 2.5x broke compatibility with autoconf 2.13
850 AC_DEFUN([CF_CHECK_CACHE],
851 [
852 if test -f $srcdir/config.guess || test -f $ac_aux_dir/config.guess ; then
853         ifelse([$1],,[AC_CANONICAL_HOST],[$1])
854         system_name="$host_os"
855 else
856         system_name="`(uname -s -r) 2>/dev/null`"
857         if test -z "$system_name" ; then
858                 system_name="`(hostname) 2>/dev/null`"
859         fi
860 fi
861 test -n "$system_name" && AC_DEFINE_UNQUOTED(SYSTEM_NAME,"$system_name",[Define to the system name.])
862 AC_CACHE_VAL(cf_cv_system_name,[cf_cv_system_name="$system_name"])
863
864 test -z "$system_name" && system_name="$cf_cv_system_name"
865 test -n "$cf_cv_system_name" && AC_MSG_RESULT(Configuring for $cf_cv_system_name)
866
867 if test ".$system_name" != ".$cf_cv_system_name" ; then
868         AC_MSG_RESULT(Cached system name ($system_name) does not agree with actual ($cf_cv_system_name))
869         AC_MSG_ERROR("Please remove config.cache and try again.")
870 fi
871 ])dnl
872 dnl ---------------------------------------------------------------------------
873 dnl CF_CHECK_ERRNO version: 12 updated: 2015/04/18 08:56:57
874 dnl --------------
875 dnl Check for data that is usually declared in <stdio.h> or <errno.h>, e.g.,
876 dnl the 'errno' variable.  Define a DECL_xxx symbol if we must declare it
877 dnl ourselves.
878 dnl
879 dnl $1 = the name to check
880 dnl $2 = the assumed type
881 AC_DEFUN([CF_CHECK_ERRNO],
882 [
883 AC_CACHE_CHECK(if external $1 is declared, cf_cv_dcl_$1,[
884         AC_TRY_COMPILE([
885 #ifdef HAVE_STDLIB_H
886 #include <stdlib.h>
887 #endif
888 #include <stdio.h>
889 #include <sys/types.h>
890 #include <errno.h> ],
891         ifelse([$2],,int,[$2]) x = (ifelse([$2],,int,[$2])) $1,
892         [cf_cv_dcl_$1=yes],
893         [cf_cv_dcl_$1=no])
894 ])
895
896 if test "$cf_cv_dcl_$1" = no ; then
897         CF_UPPER(cf_result,decl_$1)
898         AC_DEFINE_UNQUOTED($cf_result)
899 fi
900
901 # It's possible (for near-UNIX clones) that the data doesn't exist
902 CF_CHECK_EXTERN_DATA($1,ifelse([$2],,int,[$2]))
903 ])dnl
904 dnl ---------------------------------------------------------------------------
905 dnl CF_CHECK_EXTERN_DATA version: 4 updated: 2015/04/18 08:56:57
906 dnl --------------------
907 dnl Check for existence of external data in the current set of libraries.  If
908 dnl we can modify it, it's real enough.
909 dnl $1 = the name to check
910 dnl $2 = its type
911 AC_DEFUN([CF_CHECK_EXTERN_DATA],
912 [
913 AC_CACHE_CHECK(if external $1 exists, cf_cv_have_$1,[
914         AC_TRY_LINK([
915 #undef $1
916 extern $2 $1;
917 ],
918         [$1 = 2],
919         [cf_cv_have_$1=yes],
920         [cf_cv_have_$1=no])
921 ])
922
923 if test "$cf_cv_have_$1" = yes ; then
924         CF_UPPER(cf_result,have_$1)
925         AC_DEFINE_UNQUOTED($cf_result)
926 fi
927
928 ])dnl
929 dnl ---------------------------------------------------------------------------
930 dnl CF_CHECK_GPM_WGETCH version: 2 updated: 2010/08/14 18:25:37
931 dnl -------------------
932 dnl Check if GPM is already linked with curses.  If so - and if the linkage
933 dnl is not "weak" - warn about this because it can create problems linking
934 dnl applications with ncurses.
935 AC_DEFUN([CF_CHECK_GPM_WGETCH],[
936 AC_CHECK_LIB(gpm,Gpm_Wgetch,[
937
938 AC_CACHE_CHECK(if GPM is weakly bound to curses library, cf_cv_check_gpm_wgetch,[
939 cf_cv_check_gpm_wgetch=unknown
940 if test "$cross_compiling" != yes ; then
941
942 cat >conftest.$ac_ext <<CF_EOF
943 #include <gpm.h>
944 int main()
945 {
946         Gpm_Wgetch();
947         ${cf_cv_main_return:-return}(0);
948 }
949 CF_EOF
950
951         cf_save_LIBS="$LIBS"
952         # This only works if we can look at the symbol table.  If a shared
953         # library is stripped for install, we cannot use that.  So we're forced
954         # to rely on the static library, noting that some packagers may not
955         # include it.
956         LIBS="-static -lgpm -dynamic $LIBS"
957         if AC_TRY_EVAL(ac_compile) ; then
958                 if AC_TRY_EVAL(ac_link) ; then
959                         cf_cv_check_gpm_wgetch=`nm conftest$ac_exeext | egrep '\<wgetch\>' | egrep '\<[[vVwW]]\>'`
960                         test -n "$cf_cv_check_gpm_wgetch" && cf_cv_check_gpm_wgetch=yes
961                         test -z "$cf_cv_check_gpm_wgetch" && cf_cv_check_gpm_wgetch=no
962                 fi
963         fi
964         rm -rf conftest*
965         LIBS="$cf_save_LIBS"
966 fi
967 ])
968
969 if test "$cf_cv_check_gpm_wgetch" != yes ; then
970         AC_MSG_WARN(GPM library is already linked with curses - read the FAQ)
971 fi
972 ])])dnl
973 dnl ---------------------------------------------------------------------------
974 dnl CF_CHECK_LIBTOOL_VERSION version: 1 updated: 2013/04/06 18:03:09
975 dnl ------------------------
976 dnl Show the version of libtool
977 dnl
978 dnl Save the version in a cache variable - this is not entirely a good thing,
979 dnl but the version string from libtool is very ugly, and for bug reports it
980 dnl might be useful to have the original string.
981 AC_DEFUN([CF_CHECK_LIBTOOL_VERSION],[
982 if test -n "$LIBTOOL" && test "$LIBTOOL" != none
983 then
984         AC_MSG_CHECKING(version of $LIBTOOL)
985         CF_LIBTOOL_VERSION
986         AC_MSG_RESULT($cf_cv_libtool_version)
987         if test -z "$cf_cv_libtool_version" ; then
988                 AC_MSG_ERROR(This is not GNU libtool)
989         fi
990 else
991         AC_MSG_ERROR(GNU libtool has not been found)
992 fi
993 ])dnl
994 dnl ---------------------------------------------------------------------------
995 dnl CF_CHECK_WCHAR_H version: 1 updated: 2011/10/29 15:01:05
996 dnl ----------------
997 dnl Check if wchar.h can be used, i.e., without defining _XOPEN_SOURCE_EXTENDED
998 AC_DEFUN([CF_CHECK_WCHAR_H],[
999 AC_CACHE_CHECK(if wchar.h can be used as is,cf_cv_wchar_h_okay,[
1000 AC_TRY_COMPILE(
1001 [
1002 #include <stdlib.h>
1003 #include <wchar.h>
1004 ],[
1005         wint_t foo = 0;
1006         int bar = iswpunct(foo)],
1007         [cf_cv_wchar_h_okay=yes],
1008         [cf_cv_wchar_h_okay=no])])
1009
1010 if test $cf_cv_wchar_h_okay = no
1011 then
1012         CF_PREDEFINE(_XOPEN_SOURCE_EXTENDED)
1013 fi
1014 ])dnl
1015 dnl ---------------------------------------------------------------------------
1016 dnl CF_CHECK_WCWIDTH_GRAPHICS version: 1 updated: 2015/12/19 17:47:56
1017 dnl -------------------------
1018 dnl Most "modern" terminal emulators are based to some degree on VT100, and
1019 dnl should support line-drawing.  Even with Unicode.  There is a problem.
1020 dnl
1021 dnl While most of the VT100 graphics characters were incorporated into Unicode,
1022 dnl all of those were combined into a page of useful graphics characters.
1023 dnl
1024 dnl So far, so good.
1025 dnl
1026 dnl However, while they are useful, there are other considerations.  CJK
1027 dnl is (because of poor device resolution) often rendered as double-width
1028 dnl characters.  So... for these generally-useful characters, what should
1029 dnl be the width (to make them consistent with adjacent characters)?
1030 dnl
1031 dnl The obvious choice would have been to make this locale-dependent, and use
1032 dnl wcwidth() to tell applications what the actual width is.  That was too
1033 dnl obvious.  Instead, we have a slew of "ambiguous-width" characters.
1034 dnl See for example
1035 dnl             http://www.unicode.org/reports/tr11/tr11-29.html
1036 dnl             http://www.cl.cam.ac.uk/~mgk25/ucs/scw-proposal.html
1037 dnl
1038 dnl The EastAsianWidth-6.2.0.txt file from the Unicode organization lists
1039 dnl more than 22,000 characters, with 1281 of those as ambiguous-width.  For
1040 dnl instance, it lists half (44/96) of the Latin-1 characters as
1041 dnl ambiguous-width.  Also, all of the box-characters at 0x2500 are ambiguous.
1042 dnl
1043 dnl What this means for the implementor is that on some systems wcwidth() can
1044 dnl give bad advice.  On Solaris, some of the ambiguous widths are returned as
1045 dnl 1 (the Latin-1 characters), while others are returned as 2 (line-drawing
1046 dnl characters).  These do not necessarily match the behavior of the terminal
1047 dnl emulator.  xterm, for instance, does an optional startup check to find if
1048 dnl this problem (or similar) exists with the system's locale tables, rejecting
1049 dnl them if they are too unreliable.
1050 AC_DEFUN([CF_CHECK_WCWIDTH_GRAPHICS],[
1051 AC_CACHE_CHECK(if wcwidth agrees graphics are single-width, cf_cv_wcwidth_graphics,[
1052 cat >conftest.in <<CF_EOF
1053 -       VT100 symbols
1054 0x250c  upper left corner
1055 0x2514  lower left corner
1056 0x2510  upper right corner
1057 0x2518  lower right corner
1058 0x251c  tee pointing left
1059 0x2524  tee pointing right
1060 0x2534  tee pointing up
1061 0x252c  tee pointing down
1062 0x2500  horizontal line
1063 0x2502  vertical line
1064 0x253c  large plus or crossover
1065 0x23ba  scan line 1
1066 0x23bd  scan line 9
1067 0x25c6  diamond
1068 0x2592  checker board (stipple)
1069 0x00b0  degree symbol
1070 0x00b1  plus/minus
1071 0x00b7  bullet
1072 -       Teletype 5410v1 symbols
1073 0x2190  arrow pointing left
1074 0x2192  arrow pointing right
1075 0x2193  arrow pointing down
1076 0x2191  arrow pointing up
1077 0x2592  board of squares
1078 0x2603  lantern symbol
1079 0x25ae  solid square block
1080 -       these defaults were invented for ncurses
1081 0x23bb  scan line 3
1082 0x23bc  scan line 7
1083 0x2264  less-than-or-equal-to
1084 0x2265  greater-than-or-equal-to
1085 0x03c0  greek pi
1086 0x2260  not-equal
1087 0x00a3  pound-sterling symbol
1088 -       thick-line-drawing
1089 0x250f  upper left corner
1090 0x2517  lower left corner
1091 0x2513  upper right corner
1092 0x251b  lower right corner
1093 0x2523  tee pointing left
1094 0x252b  tee pointing right
1095 0x253b  tee pointing up
1096 0x2533  tee pointing down
1097 0x2501  horizontal line
1098 0x2503  vertical line
1099 0x254b  large plus or crossover
1100 -       double-line-drawing
1101 0x2554  upper left corner
1102 0x255a  lower left corner
1103 0x2557  upper right corner
1104 0x255d  lower right corner
1105 0x2563  tee pointing left
1106 0x2560  tee pointing right
1107 0x2569  tee pointing up
1108 0x2566  tee pointing down
1109 0x2550  horizontal line
1110 0x2551  vertical line
1111 0x256c  large plus or crossover
1112 CF_EOF
1113 AC_TRY_RUN([
1114 #include <locale.h>
1115 #include <stdio.h>
1116 #include <wchar.h>
1117
1118 #define MY_LEN 80
1119
1120 int
1121 main(void)
1122 {
1123         FILE *fp;
1124         int value;
1125         char buffer[MY_LEN + 1];
1126         char notes[MY_LEN + 1];
1127         int totals = 0;
1128         int passed = 0;
1129
1130         if (setlocale(LC_ALL, "en_US.UTF8") ||
1131                 setlocale(LC_ALL, "en_US.UTF-8") ||
1132                 setlocale(LC_ALL, "en_US.utf8") ||
1133                 setlocale(LC_ALL, "en_US.utf-8")) {
1134                 if ((fp = fopen("conftest.in", "r")) != 0) {
1135                         while (fgets(buffer, MY_LEN, fp) != 0) {
1136                                 if (*buffer == '-') {
1137                                         fprintf(stderr, "\t%s", buffer);
1138                                 } else if (sscanf(buffer, "%x %s", &value, notes) == 2) {
1139                                         ++totals;
1140                                         if (wcwidth(value) == 1)
1141                                                 ++passed;
1142                                         fprintf(stderr, "%d\t%s", wcwidth(value), buffer);
1143                                 } else {
1144                                         fprintf(stderr, "?\t%s", buffer);
1145                                 }
1146                         }
1147                 }
1148         }
1149         fprintf(stderr, "%d/%d passed wcwidth/graphics check\n", passed, totals);
1150         return (totals == passed) ? 0 : 1;
1151 }
1152 ],
1153 [cf_cv_wcwidth_graphics=yes],
1154 [cf_cv_wcwidth_graphics=no],
1155 [cf_cv_wcwidth_graphics=unknown])
1156 ])
1157 ])dnl
1158 dnl ---------------------------------------------------------------------------
1159 dnl CF_CLANG_COMPILER version: 2 updated: 2013/11/19 19:23:35
1160 dnl -----------------
1161 dnl Check if the given compiler is really clang.  clang's C driver defines
1162 dnl __GNUC__ (fooling the configure script into setting $GCC to yes) but does
1163 dnl not ignore some gcc options.
1164 dnl
1165 dnl This macro should be run "soon" after AC_PROG_CC or AC_PROG_CPLUSPLUS, to
1166 dnl ensure that it is not mistaken for gcc/g++.  It is normally invoked from
1167 dnl the wrappers for gcc and g++ warnings.
1168 dnl
1169 dnl $1 = GCC (default) or GXX
1170 dnl $2 = CLANG_COMPILER (default)
1171 dnl $3 = CFLAGS (default) or CXXFLAGS
1172 AC_DEFUN([CF_CLANG_COMPILER],[
1173 ifelse([$2],,CLANG_COMPILER,[$2])=no
1174
1175 if test "$ifelse([$1],,[$1],GCC)" = yes ; then
1176         AC_MSG_CHECKING(if this is really Clang ifelse([$1],GXX,C++,C) compiler)
1177         cf_save_CFLAGS="$ifelse([$3],,CFLAGS,[$3])"
1178         ifelse([$3],,CFLAGS,[$3])="$ifelse([$3],,CFLAGS,[$3]) -Qunused-arguments"
1179         AC_TRY_COMPILE([],[
1180 #ifdef __clang__
1181 #else
1182 make an error
1183 #endif
1184 ],[ifelse([$2],,CLANG_COMPILER,[$2])=yes
1185 cf_save_CFLAGS="$cf_save_CFLAGS -Qunused-arguments"
1186 ],[])
1187         ifelse([$3],,CFLAGS,[$3])="$cf_save_CFLAGS"
1188         AC_MSG_RESULT($ifelse([$2],,CLANG_COMPILER,[$2]))
1189 fi
1190 ])
1191 dnl ---------------------------------------------------------------------------
1192 dnl CF_CPP_PARAM_INIT version: 6 updated: 2012/10/06 17:56:13
1193 dnl -----------------
1194 dnl Check if the C++ compiler accepts duplicate parameter initialization.  This
1195 dnl is a late feature for the standard and is not in some recent compilers
1196 dnl (1999/9/11).
1197 AC_DEFUN([CF_CPP_PARAM_INIT],
1198 [
1199 if test -n "$CXX"; then
1200 AC_CACHE_CHECK(if $CXX accepts parameter initialization,cf_cv_cpp_param_init,[
1201         AC_LANG_SAVE
1202         AC_LANG_CPLUSPLUS
1203         AC_TRY_RUN([
1204 class TEST {
1205 private:
1206         int value;
1207 public:
1208         TEST(int x = 1);
1209         ~TEST();
1210 };
1211
1212 TEST::TEST(int x = 1)   // some compilers do not like second initializer
1213 {
1214         value = x;
1215 }
1216 int main() { }
1217 ],
1218         [cf_cv_cpp_param_init=yes],
1219         [cf_cv_cpp_param_init=no],
1220         [cf_cv_cpp_param_init=unknown])
1221         AC_LANG_RESTORE
1222 ])
1223 fi
1224 test "$cf_cv_cpp_param_init" = yes && AC_DEFINE(CPP_HAS_PARAM_INIT,1,[Define to 1 if C++ has parameter initialization])
1225 ])dnl
1226 dnl ---------------------------------------------------------------------------
1227 dnl CF_CPP_STATIC_CAST version: 3 updated: 2013/04/13 18:03:21
1228 dnl ------------------
1229 dnl Check if the C++ compiler accepts static_cast in generics.  This appears to
1230 dnl not be supported in g++ before 3.0
1231 AC_DEFUN([CF_CPP_STATIC_CAST],
1232 [
1233 if test -n "$CXX"; then
1234
1235 AC_CACHE_CHECK(if $CXX accepts static_cast,cf_cv_cpp_static_cast,[
1236         AC_LANG_SAVE
1237         AC_LANG_CPLUSPLUS
1238
1239         AC_TRY_COMPILE([
1240 class NCursesPanel
1241 {
1242 public:
1243   NCursesPanel(int nlines,
1244                int ncols,
1245                int begin_y = 0,
1246                int begin_x = 0)
1247   {
1248   }
1249   NCursesPanel();
1250   ~NCursesPanel();
1251 };
1252
1253 template<class T> class NCursesUserPanel : public NCursesPanel
1254 {
1255 public:
1256   NCursesUserPanel (int nlines,
1257                     int ncols,
1258                     int begin_y = 0,
1259                     int begin_x = 0,
1260                     const T* p_UserData = static_cast<T*>(0))
1261     : NCursesPanel (nlines, ncols, begin_y, begin_x)
1262   {
1263   };
1264   NCursesUserPanel(const T* p_UserData = static_cast<T*>(0)) : NCursesPanel()
1265   {
1266   };
1267
1268   virtual ~NCursesUserPanel() {};
1269 };
1270 ],[
1271         const char* p_UserData = static_cast<char*>(0)],
1272         [cf_cv_cpp_static_cast=yes],
1273         [cf_cv_cpp_static_cast=no])
1274
1275         AC_LANG_RESTORE
1276 ])
1277
1278 fi
1279
1280 test "$cf_cv_cpp_static_cast" = yes && AC_DEFINE(CPP_HAS_STATIC_CAST,1,[Define to 1 if C++ has static_cast])
1281 ])dnl
1282 dnl ---------------------------------------------------------------------------
1283 dnl CF_CXX_AR_FLAGS version: 2 updated: 2015/04/17 21:13:04
1284 dnl ---------------
1285 dnl Setup special archiver flags for given compilers.
1286 AC_DEFUN([CF_CXX_AR_FLAGS],[
1287         CXX_AR='$(AR)'
1288         CXX_ARFLAGS='$(ARFLAGS)'
1289         case $cf_cv_system_name in
1290         (irix*)
1291             if test "$GXX" != yes ; then
1292                 CXX_AR='$(CXX)'
1293                 CXX_ARFLAGS='-ar -o'
1294             fi
1295             ;;
1296         (sco3.2v5*)
1297             CXXLDFLAGS="-u main"
1298             ;;
1299         (solaris2*)
1300             if test "$GXX" != yes ; then
1301                 CXX_AR='$(CXX)'
1302                 CXX_ARFLAGS='-xar -o'
1303             fi
1304             ;;
1305         esac
1306         AC_SUBST(CXXLDFLAGS)
1307         AC_SUBST(CXX_AR)
1308         AC_SUBST(CXX_ARFLAGS)
1309 ])dnl
1310 dnl ---------------------------------------------------------------------------
1311 dnl CF_CXX_IOSTREAM_NAMESPACE version: 2 updated: 2012/10/06 17:56:13
1312 dnl -------------------------
1313 dnl For c++, check if iostream uses "std::" namespace.
1314 AC_DEFUN([CF_CXX_IOSTREAM_NAMESPACE],[
1315 AC_CHECK_HEADERS(iostream)
1316 if test x"$ac_cv_header_iostream" = xyes ; then
1317         AC_MSG_CHECKING(if iostream uses std-namespace)
1318         AC_TRY_COMPILE([
1319 #include <iostream>
1320 using std::endl;
1321 using std::cerr;],[
1322 cerr << "testing" << endl;
1323 ],[cf_iostream_namespace=yes],[cf_iostream_namespace=no])
1324         AC_MSG_RESULT($cf_iostream_namespace)
1325         if test "$cf_iostream_namespace" = yes ; then
1326                 AC_DEFINE(IOSTREAM_NAMESPACE,1,[Define to 1 if C++ has namespace iostream])
1327         fi
1328 fi
1329 ])dnl
1330 dnl ---------------------------------------------------------------------------
1331 dnl CF_C_INLINE version: 5 updated: 2015/04/18 08:56:57
1332 dnl -----------
1333 dnl Check if the C compiler supports "inline".
1334 dnl $1 is the name of a shell variable to set if inline is supported
1335 dnl $2 is the threshold for gcc 4.x's option controlling maximum inline size
1336 AC_DEFUN([CF_C_INLINE],[
1337 AC_C_INLINE
1338 $1=
1339 if test "$ac_cv_c_inline" != no ; then
1340         $1=inline
1341         if test "$INTEL_COMPILER" = yes
1342         then
1343                 :
1344         elif test "$CLANG_COMPILER" = yes
1345         then
1346                 :
1347         elif test "$GCC" = yes
1348         then
1349                 AC_CACHE_CHECK(if $CC supports options to tune inlining,cf_cv_gcc_inline,[
1350                 cf_save_CFLAGS=$CFLAGS
1351                 CFLAGS="$CFLAGS --param max-inline-insns-single=$2"
1352                 AC_TRY_COMPILE([inline int foo(void) { return 1; }],
1353                 [${cf_cv_main_return:-return} foo()],
1354                 [cf_cv_gcc_inline=yes],
1355                 [cf_cv_gcc_inline=no])
1356                 CFLAGS=$cf_save_CFLAGS
1357                 ])
1358                 if test "$cf_cv_gcc_inline" = yes ; then
1359                         CF_ADD_CFLAGS([--param max-inline-insns-single=$2])
1360                 fi
1361         fi
1362 fi
1363 AC_SUBST($1)
1364 ])dnl
1365 dnl ---------------------------------------------------------------------------
1366 dnl CF_DIRNAME version: 4 updated: 2002/12/21 19:25:52
1367 dnl ----------
1368 dnl "dirname" is not portable, so we fake it with a shell script.
1369 AC_DEFUN([CF_DIRNAME],[$1=`echo $2 | sed -e 's%/[[^/]]*$%%'`])dnl
1370 dnl ---------------------------------------------------------------------------
1371 dnl CF_DIRS_TO_MAKE version: 3 updated: 2002/02/23 20:38:31
1372 dnl ---------------
1373 AC_DEFUN([CF_DIRS_TO_MAKE],
1374 [
1375 DIRS_TO_MAKE="lib"
1376 for cf_item in $cf_list_models
1377 do
1378         CF_OBJ_SUBDIR($cf_item,cf_subdir)
1379         for cf_item2 in $DIRS_TO_MAKE
1380         do
1381                 test $cf_item2 = $cf_subdir && break
1382         done
1383         test ".$cf_item2" != ".$cf_subdir" && DIRS_TO_MAKE="$DIRS_TO_MAKE $cf_subdir"
1384 done
1385 for cf_dir in $DIRS_TO_MAKE
1386 do
1387         test ! -d $cf_dir && mkdir $cf_dir
1388 done
1389 AC_SUBST(DIRS_TO_MAKE)
1390 ])dnl
1391 dnl ---------------------------------------------------------------------------
1392 dnl CF_DISABLE_ECHO version: 13 updated: 2015/04/18 08:56:57
1393 dnl ---------------
1394 dnl You can always use "make -n" to see the actual options, but it's hard to
1395 dnl pick out/analyze warning messages when the compile-line is long.
1396 dnl
1397 dnl Sets:
1398 dnl     ECHO_LT - symbol to control if libtool is verbose
1399 dnl     ECHO_LD - symbol to prefix "cc -o" lines
1400 dnl     RULE_CC - symbol to put before implicit "cc -c" lines (e.g., .c.o)
1401 dnl     SHOW_CC - symbol to put before explicit "cc -c" lines
1402 dnl     ECHO_CC - symbol to put before any "cc" line
1403 dnl
1404 AC_DEFUN([CF_DISABLE_ECHO],[
1405 AC_MSG_CHECKING(if you want to see long compiling messages)
1406 CF_ARG_DISABLE(echo,
1407         [  --disable-echo          do not display "compiling" commands],
1408         [
1409         ECHO_LT='--silent'
1410         ECHO_LD='@echo linking [$]@;'
1411         RULE_CC='@echo compiling [$]<'
1412         SHOW_CC='@echo compiling [$]@'
1413         ECHO_CC='@'
1414 ],[
1415         ECHO_LT=''
1416         ECHO_LD=''
1417         RULE_CC=''
1418         SHOW_CC=''
1419         ECHO_CC=''
1420 ])
1421 AC_MSG_RESULT($enableval)
1422 AC_SUBST(ECHO_LT)
1423 AC_SUBST(ECHO_LD)
1424 AC_SUBST(RULE_CC)
1425 AC_SUBST(SHOW_CC)
1426 AC_SUBST(ECHO_CC)
1427 ])dnl
1428 dnl ---------------------------------------------------------------------------
1429 dnl CF_DISABLE_GNAT_PROJECTS version: 1 updated: 2014/06/01 11:34:00
1430 dnl ------------------------
1431 AC_DEFUN([CF_DISABLE_GNAT_PROJECTS],[
1432 AC_MSG_CHECKING(if we want to use GNAT projects)
1433 CF_ARG_DISABLE(gnat-projects,
1434         [  --disable-gnat-projects test: disable GNAT projects even if usable],
1435         [enable_gnat_projects=no],
1436         [enable_gnat_projects=yes])
1437 AC_MSG_RESULT($enable_gnat_projects)
1438 ])dnl
1439 dnl ---------------------------------------------------------------------------
1440 dnl CF_DISABLE_LEAKS version: 7 updated: 2012/10/02 20:55:03
1441 dnl ----------------
1442 dnl Combine no-leak checks with the libraries or tools that are used for the
1443 dnl checks.
1444 AC_DEFUN([CF_DISABLE_LEAKS],[
1445
1446 AC_REQUIRE([CF_WITH_DMALLOC])
1447 AC_REQUIRE([CF_WITH_DBMALLOC])
1448 AC_REQUIRE([CF_WITH_VALGRIND])
1449
1450 AC_MSG_CHECKING(if you want to perform memory-leak testing)
1451 AC_ARG_ENABLE(leaks,
1452         [  --disable-leaks         test: free permanent memory, analyze leaks],
1453         [if test "x$enableval" = xno; then with_no_leaks=yes; else with_no_leaks=no; fi],
1454         : ${with_no_leaks:=no})
1455 AC_MSG_RESULT($with_no_leaks)
1456
1457 if test "$with_no_leaks" = yes ; then
1458         AC_DEFINE(NO_LEAKS,1,[Define to 1 if you want to perform memory-leak testing.])
1459         AC_DEFINE(YY_NO_LEAKS,1,[Define to 1 if you want to perform memory-leak testing.])
1460 fi
1461 ])dnl
1462 dnl ---------------------------------------------------------------------------
1463 dnl CF_DISABLE_LIBTOOL_VERSION version: 3 updated: 2015/04/17 21:13:04
1464 dnl --------------------------
1465 dnl Check if we should use the libtool 1.5 feature "-version-number" instead of
1466 dnl the older "-version-info" feature.  The newer feature allows us to use
1467 dnl version numbering on shared libraries which make them compatible with
1468 dnl various systems.
1469 AC_DEFUN([CF_DISABLE_LIBTOOL_VERSION],
1470 [
1471 AC_MSG_CHECKING(if libtool -version-number should be used)
1472 CF_ARG_DISABLE(libtool-version,
1473         [  --disable-libtool-version  enable to use libtool's incompatible naming scheme],
1474         [cf_libtool_version=no],
1475         [cf_libtool_version=yes])
1476 AC_MSG_RESULT($cf_libtool_version)
1477
1478 if test "$cf_libtool_version" = yes ; then
1479         LIBTOOL_VERSION="-version-number"
1480 else
1481         LIBTOOL_VERSION="-version-info"
1482         case "x$VERSION" in
1483         (x)
1484                 AC_MSG_WARN(VERSION was not set)
1485                 ;;
1486         (x*.*.*)
1487                 ABI_VERSION="$VERSION"
1488                 CF_VERBOSE(ABI_VERSION: $ABI_VERSION)
1489                 ;;
1490         (x*:*:*)
1491                 ABI_VERSION=`echo "$VERSION" | sed -e 's/:/./g'`
1492                 CF_VERBOSE(ABI_VERSION: $ABI_VERSION)
1493                 ;;
1494         (*)
1495                 AC_MSG_WARN(unexpected VERSION value: $VERSION)
1496                 ;;
1497         esac
1498 fi
1499
1500 AC_SUBST(ABI_VERSION)
1501 AC_SUBST(LIBTOOL_VERSION)
1502 ])dnl
1503 dnl ---------------------------------------------------------------------------
1504 dnl CF_DISABLE_RPATH_HACK version: 2 updated: 2011/02/13 13:31:33
1505 dnl ---------------------
1506 dnl The rpath-hack makes it simpler to build programs, particularly with the
1507 dnl *BSD ports which may have essential libraries in unusual places.  But it
1508 dnl can interfere with building an executable for the base system.  Use this
1509 dnl option in that case.
1510 AC_DEFUN([CF_DISABLE_RPATH_HACK],
1511 [
1512 AC_MSG_CHECKING(if rpath-hack should be disabled)
1513 CF_ARG_DISABLE(rpath-hack,
1514         [  --disable-rpath-hack    don't add rpath options for additional libraries],
1515         [cf_disable_rpath_hack=yes],
1516         [cf_disable_rpath_hack=no])
1517 AC_MSG_RESULT($cf_disable_rpath_hack)
1518 if test "$cf_disable_rpath_hack" = no ; then
1519         CF_RPATH_HACK
1520 fi
1521 ])
1522 dnl ---------------------------------------------------------------------------
1523 dnl CF_ENABLE_PC_FILES version: 13 updated: 2015/11/01 05:27:39
1524 dnl ------------------
1525 dnl This is the "--enable-pc-files" option, which is available if there is a
1526 dnl pkg-config configuration on the local machine.
1527 AC_DEFUN([CF_ENABLE_PC_FILES],[
1528 AC_REQUIRE([CF_PKG_CONFIG])
1529 AC_REQUIRE([CF_WITH_PKG_CONFIG_LIBDIR])
1530
1531 if test "x$PKG_CONFIG" != xnone
1532 then
1533         AC_MSG_CHECKING(if we should install .pc files for $PKG_CONFIG)
1534 else
1535         AC_MSG_CHECKING(if we should install .pc files)
1536 fi
1537
1538 AC_ARG_ENABLE(pc-files,
1539         [  --enable-pc-files       generate and install .pc files for pkg-config],
1540         [enable_pc_files=$enableval],
1541         [enable_pc_files=no])
1542 AC_MSG_RESULT($enable_pc_files)
1543
1544 if test "x$enable_pc_files" != xno
1545 then
1546         MAKE_PC_FILES=
1547         case "x$PKG_CONFIG_LIBDIR" in
1548         (xno|xyes)
1549                 AC_MSG_WARN(no PKG_CONFIG_LIBDIR was found)
1550                 ;;
1551         (*)
1552                 CF_PATH_SYNTAX(PKG_CONFIG_LIBDIR)
1553                 ;;
1554         esac
1555 else
1556         MAKE_PC_FILES="#"
1557 fi
1558 AC_SUBST(MAKE_PC_FILES)
1559 ])dnl
1560 dnl ---------------------------------------------------------------------------
1561 dnl CF_ENABLE_RPATH version: 2 updated: 2010/03/27 18:39:42
1562 dnl ---------------
1563 dnl Check if the rpath option should be used, setting cache variable
1564 dnl cf_cv_enable_rpath if so.
1565 AC_DEFUN([CF_ENABLE_RPATH],
1566 [
1567 AC_MSG_CHECKING(if rpath option should be used)
1568 AC_ARG_ENABLE(rpath,
1569 [  --enable-rpath          use rpath option when generating shared libraries],
1570 [cf_cv_enable_rpath=$enableval],
1571 [cf_cv_enable_rpath=no])
1572 AC_MSG_RESULT($cf_cv_enable_rpath)
1573 ])dnl
1574 dnl ---------------------------------------------------------------------------
1575 dnl CF_ENABLE_STRING_HACKS version: 3 updated: 2013/01/26 16:26:12
1576 dnl ----------------------
1577 dnl On a few platforms, the compiler and/or loader nags with untruthful
1578 dnl comments stating that "most" uses of strcat/strcpy/sprintf are incorrect,
1579 dnl and implying that most uses of the recommended alternatives are correct.
1580 dnl
1581 dnl Factually speaking, no one has actually counted the number of uses of these
1582 dnl functions versus the total of incorrect uses.  Samples of a few thousand
1583 dnl instances are meaningless compared to the hundreds of millions of lines of
1584 dnl existing C code.
1585 dnl
1586 dnl strlcat/strlcpy are (as of 2012) non-standard, and are available on some
1587 dnl platforms, in implementations of varying quality.  Likewise, snprintf is
1588 dnl standard - but evolved through phases, and older implementations are likely
1589 dnl to yield surprising results, as documented in manpages on various systems.
1590 AC_DEFUN([CF_ENABLE_STRING_HACKS],
1591 [
1592 AC_MSG_CHECKING(if you want to work around bogus compiler/loader warnings)
1593 AC_ARG_ENABLE(string-hacks,
1594         [  --enable-string-hacks   work around bogus compiler/loader warnings],
1595         [with_string_hacks=$enableval],
1596         [with_string_hacks=no])
1597 AC_MSG_RESULT($with_string_hacks)
1598
1599 if test "x$with_string_hacks" = "xyes"; then
1600         AC_DEFINE(USE_STRING_HACKS,1,[Define to 1 to work around bogus compiler/loader warnings])
1601         AC_MSG_WARN(enabling string-hacks to work around bogus compiler/loader warnings)
1602         AC_CHECK_FUNCS( strlcat strlcpy snprintf )
1603 fi
1604 ])dnl
1605 dnl ---------------------------------------------------------------------------
1606 dnl CF_ERRNO version: 5 updated: 1997/11/30 12:44:39
1607 dnl --------
1608 dnl Check if 'errno' is declared in <errno.h>
1609 AC_DEFUN([CF_ERRNO],
1610 [
1611 CF_CHECK_ERRNO(errno)
1612 ])dnl
1613 dnl ---------------------------------------------------------------------------
1614 dnl CF_ETIP_DEFINES version: 5 updated: 2012/02/18 17:51:07
1615 dnl ---------------
1616 dnl Test for conflicting definitions of exception in gcc 2.8.0, etc., between
1617 dnl math.h and builtin.h, only for ncurses
1618 AC_DEFUN([CF_ETIP_DEFINES],
1619 [
1620 AC_MSG_CHECKING(for special defines needed for etip.h)
1621 cf_save_CXXFLAGS="$CXXFLAGS"
1622 cf_result="none"
1623
1624 # etip.h includes ncurses.h which includes ncurses_dll.h
1625 # But ncurses_dll.h is generated - fix here.
1626 test -d include || mkdir include
1627 test -f include/ncurses_dll.h || sed -e 's/@NCURSES_WRAP_PREFIX@/'$NCURSES_WRAP_PREFIX'/g' ${srcdir}/include/ncurses_dll.h.in >include/ncurses_dll.h
1628
1629 for cf_math in "" MATH_H
1630 do
1631 for cf_excp in "" MATH_EXCEPTION
1632 do
1633         CXXFLAGS="$cf_save_CXXFLAGS -I${srcdir}/c++ -I${srcdir}/menu -Iinclude -I${srcdir}/include"
1634         test -n "$cf_math" && CXXFLAGS="$CXXFLAGS -DETIP_NEEDS_${cf_math}"
1635         test -n "$cf_excp" && CXXFLAGS="$CXXFLAGS -DETIP_NEEDS_${cf_excp}"
1636 AC_TRY_COMPILE([
1637 #include <etip.h.in>
1638 ],[],[
1639         test -n "$cf_math" && AC_DEFINE_UNQUOTED(ETIP_NEEDS_${cf_math})
1640         test -n "$cf_excp" && AC_DEFINE_UNQUOTED(ETIP_NEEDS_${cf_excp})
1641         cf_result="$cf_math $cf_excp"
1642         break 2
1643 ],[])
1644 done
1645 done
1646 AC_MSG_RESULT($cf_result)
1647 CXXFLAGS="$cf_save_CXXFLAGS"
1648 ])
1649 dnl ---------------------------------------------------------------------------
1650 dnl CF_FIND_LINKAGE version: 20 updated: 2015/04/18 08:56:57
1651 dnl ---------------
1652 dnl Find a library (specifically the linkage used in the code fragment),
1653 dnl searching for it if it is not already in the library path.
1654 dnl See also CF_ADD_SEARCHPATH.
1655 dnl
1656 dnl Parameters (4-on are optional):
1657 dnl     $1 = headers for library entrypoint
1658 dnl     $2 = code fragment for library entrypoint
1659 dnl     $3 = the library name without the "-l" option or ".so" suffix.
1660 dnl     $4 = action to perform if successful (default: update CPPFLAGS, etc)
1661 dnl     $5 = action to perform if not successful
1662 dnl     $6 = module name, if not the same as the library name
1663 dnl     $7 = extra libraries
1664 dnl
1665 dnl Sets these variables:
1666 dnl     $cf_cv_find_linkage_$3 - yes/no according to whether linkage is found
1667 dnl     $cf_cv_header_path_$3 - include-directory if needed
1668 dnl     $cf_cv_library_path_$3 - library-directory if needed
1669 dnl     $cf_cv_library_file_$3 - library-file if needed, e.g., -l$3
1670 AC_DEFUN([CF_FIND_LINKAGE],[
1671
1672 # If the linkage is not already in the $CPPFLAGS/$LDFLAGS configuration, these
1673 # will be set on completion of the AC_TRY_LINK below.
1674 cf_cv_header_path_$3=
1675 cf_cv_library_path_$3=
1676
1677 CF_MSG_LOG([Starting [FIND_LINKAGE]($3,$6)])
1678
1679 cf_save_LIBS="$LIBS"
1680
1681 AC_TRY_LINK([$1],[$2],[
1682         cf_cv_find_linkage_$3=yes
1683         cf_cv_header_path_$3=/usr/include
1684         cf_cv_library_path_$3=/usr/lib
1685 ],[
1686
1687 LIBS="-l$3 $7 $cf_save_LIBS"
1688
1689 AC_TRY_LINK([$1],[$2],[
1690         cf_cv_find_linkage_$3=yes
1691         cf_cv_header_path_$3=/usr/include
1692         cf_cv_library_path_$3=/usr/lib
1693         cf_cv_library_file_$3="-l$3"
1694 ],[
1695         cf_cv_find_linkage_$3=no
1696         LIBS="$cf_save_LIBS"
1697
1698         CF_VERBOSE(find linkage for $3 library)
1699         CF_MSG_LOG([Searching for headers in [FIND_LINKAGE]($3,$6)])
1700
1701         cf_save_CPPFLAGS="$CPPFLAGS"
1702         cf_test_CPPFLAGS="$CPPFLAGS"
1703
1704         CF_HEADER_PATH(cf_search,ifelse([$6],,[$3],[$6]))
1705         for cf_cv_header_path_$3 in $cf_search
1706         do
1707                 if test -d $cf_cv_header_path_$3 ; then
1708                         CF_VERBOSE(... testing $cf_cv_header_path_$3)
1709                         CPPFLAGS="$cf_save_CPPFLAGS -I$cf_cv_header_path_$3"
1710                         AC_TRY_COMPILE([$1],[$2],[
1711                                 CF_VERBOSE(... found $3 headers in $cf_cv_header_path_$3)
1712                                 cf_cv_find_linkage_$3=maybe
1713                                 cf_test_CPPFLAGS="$CPPFLAGS"
1714                                 break],[
1715                                 CPPFLAGS="$cf_save_CPPFLAGS"
1716                                 ])
1717                 fi
1718         done
1719
1720         if test "$cf_cv_find_linkage_$3" = maybe ; then
1721
1722                 CF_MSG_LOG([Searching for $3 library in [FIND_LINKAGE]($3,$6)])
1723
1724                 cf_save_LIBS="$LIBS"
1725                 cf_save_LDFLAGS="$LDFLAGS"
1726
1727                 ifelse([$6],,,[
1728                 CPPFLAGS="$cf_test_CPPFLAGS"
1729                 LIBS="-l$3 $7 $cf_save_LIBS"
1730                 AC_TRY_LINK([$1],[$2],[
1731                         CF_VERBOSE(... found $3 library in system)
1732                         cf_cv_find_linkage_$3=yes])
1733                         CPPFLAGS="$cf_save_CPPFLAGS"
1734                         LIBS="$cf_save_LIBS"
1735                         ])
1736
1737                 if test "$cf_cv_find_linkage_$3" != yes ; then
1738                         CF_LIBRARY_PATH(cf_search,$3)
1739                         for cf_cv_library_path_$3 in $cf_search
1740                         do
1741                                 if test -d $cf_cv_library_path_$3 ; then
1742                                         CF_VERBOSE(... testing $cf_cv_library_path_$3)
1743                                         CPPFLAGS="$cf_test_CPPFLAGS"
1744                                         LIBS="-l$3 $7 $cf_save_LIBS"
1745                                         LDFLAGS="$cf_save_LDFLAGS -L$cf_cv_library_path_$3"
1746                                         AC_TRY_LINK([$1],[$2],[
1747                                         CF_VERBOSE(... found $3 library in $cf_cv_library_path_$3)
1748                                         cf_cv_find_linkage_$3=yes
1749                                         cf_cv_library_file_$3="-l$3"
1750                                         break],[
1751                                         CPPFLAGS="$cf_save_CPPFLAGS"
1752                                         LIBS="$cf_save_LIBS"
1753                                         LDFLAGS="$cf_save_LDFLAGS"
1754                                         ])
1755                                 fi
1756                         done
1757                         CPPFLAGS="$cf_save_CPPFLAGS"
1758                         LDFLAGS="$cf_save_LDFLAGS"
1759                 fi
1760
1761         else
1762                 cf_cv_find_linkage_$3=no
1763         fi
1764         ],$7)
1765 ])
1766
1767 LIBS="$cf_save_LIBS"
1768
1769 if test "$cf_cv_find_linkage_$3" = yes ; then
1770 ifelse([$4],,[
1771         CF_ADD_INCDIR($cf_cv_header_path_$3)
1772         CF_ADD_LIBDIR($cf_cv_library_path_$3)
1773         CF_ADD_LIB($3)
1774 ],[$4])
1775 else
1776 ifelse([$5],,AC_MSG_WARN(Cannot find $3 library),[$5])
1777 fi
1778 ])dnl
1779 dnl ---------------------------------------------------------------------------
1780 dnl CF_FIND_SUB_INCDIR version: 2 updated: 2015/04/17 21:13:04
1781 dnl ------------------
1782 dnl Find an include-directory with the given leaf-name.  This is useful for
1783 dnl example with FreeBSD ports, which use this convention to distinguish
1784 dnl different versions of the same port.
1785 AC_DEFUN([CF_FIND_SUB_INCDIR],[
1786         CF_SUBDIR_PATH(cf_search,$1,include)
1787         for cf_item in $cf_search
1788         do
1789                 case $cf_item in
1790                 (*/$1)
1791                         CF_ADD_INCDIR($cf_item)
1792                         ;;
1793                 esac
1794         done
1795 ])dnl
1796 dnl ---------------------------------------------------------------------------
1797 dnl CF_FIND_SUB_LIBDIR version: 2 updated: 2015/04/17 21:13:04
1798 dnl ------------------
1799 dnl Find a library-directory with the given leaf-name.  This is useful for
1800 dnl example with FreeBSD ports, which use this convention to distinguish
1801 dnl different versions of the same port.
1802 AC_DEFUN([CF_FIND_SUB_LIBDIR],[
1803         CF_SUBDIR_PATH(cf_search,$1,lib)
1804         for cf_item in $cf_search
1805         do
1806                 case $cf_item in
1807                 (*/$1)
1808                         CF_ADD_LIBDIR($cf_item)
1809                         ;;
1810                 esac
1811         done
1812 ])dnl
1813 dnl ---------------------------------------------------------------------------
1814 dnl CF_FIXUP_ADAFLAGS version: 2 updated: 2015/04/17 21:13:04
1815 dnl -----------------
1816 dnl make ADAFLAGS consistent with CFLAGS
1817 AC_DEFUN([CF_FIXUP_ADAFLAGS],[
1818         AC_MSG_CHECKING(optimization options for ADAFLAGS)
1819         case "$CFLAGS" in
1820         (*-g*)
1821                 CF_ADD_ADAFLAGS(-g)
1822                 ;;
1823         esac
1824         case "$CFLAGS" in
1825         (*-O*)
1826                 cf_O_flag=`echo "$CFLAGS" |sed -e 's/^.*-O/-O/' -e 's/[[        ]].*//'`
1827                 CF_ADD_ADAFLAGS($cf_O_flag)
1828                 ;;
1829         esac
1830         AC_MSG_RESULT($ADAFLAGS)
1831 ])dnl
1832 dnl ---------------------------------------------------------------------------
1833 dnl CF_FORGET_TOOL version: 1 updated: 2013/04/06 18:03:09
1834 dnl --------------
1835 dnl Forget that we saw the given tool.
1836 AC_DEFUN([CF_FORGET_TOOL],[
1837 unset ac_cv_prog_ac_ct_$1
1838 unset ac_ct_$1
1839 unset $1
1840 ])dnl
1841 dnl ---------------------------------------------------------------------------
1842 dnl CF_FUNC_DLSYM version: 4 updated: 2015/09/12 14:46:44
1843 dnl -------------
1844 dnl Test for dlsym() and related functions, as well as libdl.
1845 dnl
1846 dnl Sets
1847 dnl     $cf_have_dlsym
1848 dnl     $cf_have_libdl
1849 AC_DEFUN([CF_FUNC_DLSYM],[
1850 cf_have_dlsym=no
1851 AC_CHECK_FUNC(dlsym,cf_have_dlsym=yes,[
1852
1853 cf_have_libdl=no
1854 AC_CHECK_LIB(dl,dlsym,[
1855         cf_have_dlsym=yes
1856         cf_have_libdl=yes])])
1857
1858 if test "$cf_have_dlsym" = yes ; then
1859         test "$cf_have_libdl" = yes && { CF_ADD_LIB(dl) }
1860
1861         AC_MSG_CHECKING(whether able to link to dl*() functions)
1862         AC_TRY_LINK([#include <dlfcn.h>],[
1863                 void *obj;
1864                 if ((obj = dlopen("filename", 0)) != 0) {
1865                         if (dlsym(obj, "symbolname") == 0) {
1866                         dlclose(obj);
1867                         }
1868                 }],[
1869                 AC_DEFINE(HAVE_LIBDL,1,[Define to 1 if we have dl library])],[
1870                 AC_MSG_ERROR(Cannot link test program for libdl)])
1871         AC_MSG_RESULT(ok)
1872 else
1873         AC_MSG_ERROR(Cannot find dlsym function)
1874 fi
1875 ])
1876 dnl ---------------------------------------------------------------------------
1877 dnl CF_FUNC_MEMMOVE version: 8 updated: 2012/10/04 20:12:20
1878 dnl ---------------
1879 dnl Check for memmove, or a bcopy that can handle overlapping copy.  If neither
1880 dnl is found, add our own version of memmove to the list of objects.
1881 AC_DEFUN([CF_FUNC_MEMMOVE],
1882 [
1883 AC_CHECK_FUNC(memmove,,[
1884 AC_CHECK_FUNC(bcopy,[
1885         AC_CACHE_CHECK(if bcopy does overlapping moves,cf_cv_good_bcopy,[
1886                 AC_TRY_RUN([
1887 int main() {
1888         static char data[] = "abcdefghijklmnopqrstuwwxyz";
1889         char temp[40];
1890         bcopy(data, temp, sizeof(data));
1891         bcopy(temp+10, temp, 15);
1892         bcopy(temp+5, temp+15, 10);
1893         ${cf_cv_main_return:-return} (strcmp(temp, "klmnopqrstuwwxypqrstuwwxyz"));
1894 }
1895                 ],
1896                 [cf_cv_good_bcopy=yes],
1897                 [cf_cv_good_bcopy=no],
1898                 [cf_cv_good_bcopy=unknown])
1899                 ])
1900         ],[cf_cv_good_bcopy=no])
1901         if test "$cf_cv_good_bcopy" = yes ; then
1902                 AC_DEFINE(USE_OK_BCOPY,1,[Define to 1 to use bcopy when memmove is unavailable])
1903         else
1904                 AC_DEFINE(USE_MY_MEMMOVE,1,[Define to 1 to use replacement function when memmove is unavailable])
1905         fi
1906 ])])dnl
1907 dnl ---------------------------------------------------------------------------
1908 dnl CF_FUNC_NANOSLEEP version: 4 updated: 2012/10/06 17:56:13
1909 dnl -----------------
1910 dnl Check for existence of workable nanosleep() function.  Some systems, e.g.,
1911 dnl AIX 4.x, provide a non-working version.
1912 AC_DEFUN([CF_FUNC_NANOSLEEP],[
1913 AC_CACHE_CHECK(if nanosleep really works,cf_cv_func_nanosleep,[
1914 AC_TRY_RUN([
1915 #include <stdio.h>
1916 #include <errno.h>
1917 #include <time.h>
1918
1919 #ifdef HAVE_SYS_TIME_H
1920 #include <sys/time.h>
1921 #endif
1922
1923 int main() {
1924         struct timespec ts1, ts2;
1925         int code;
1926         ts1.tv_sec  = 0;
1927         ts1.tv_nsec = 750000000;
1928         ts2.tv_sec  = 0;
1929         ts2.tv_nsec = 0;
1930         errno = 0;
1931         code = nanosleep(&ts1, &ts2); /* on failure errno is ENOSYS. */
1932         ${cf_cv_main_return:-return}(code != 0);
1933 }
1934 ],
1935         [cf_cv_func_nanosleep=yes],
1936         [cf_cv_func_nanosleep=no],
1937         [cf_cv_func_nanosleep=unknown])])
1938
1939 test "$cf_cv_func_nanosleep" = "yes" && AC_DEFINE(HAVE_NANOSLEEP,1,[Define to 1 if we have nanosleep()])
1940 ])
1941 dnl ---------------------------------------------------------------------------
1942 dnl CF_FUNC_OPENPTY version: 5 updated: 2015/09/12 14:46:50
1943 dnl ---------------
1944 dnl Check for openpty() function, along with <pty.h> header.  It may need the
1945 dnl "util" library as well.
1946 AC_DEFUN([CF_FUNC_OPENPTY],
1947 [
1948 AC_CHECK_LIB(util,openpty,cf_cv_lib_util=yes,cf_cv_lib_util=no)
1949 AC_CACHE_CHECK(for openpty header,cf_cv_func_openpty,[
1950         cf_save_LIBS="$LIBS"
1951         test $cf_cv_lib_util = yes && { CF_ADD_LIB(util) }
1952         for cf_header in pty.h libutil.h util.h
1953         do
1954         AC_TRY_LINK([
1955 #include <$cf_header>
1956 ],[
1957         int x = openpty((int *)0, (int *)0, (char *)0,
1958                                    (struct termios *)0, (struct winsize *)0);
1959 ],[
1960                 cf_cv_func_openpty=$cf_header
1961                 break
1962 ],[
1963                 cf_cv_func_openpty=no
1964 ])
1965         done
1966         LIBS="$cf_save_LIBS"
1967 ])
1968 ])dnl
1969 dnl ---------------------------------------------------------------------------
1970 dnl CF_FUNC_POLL version: 9 updated: 2015/10/10 13:27:32
1971 dnl ------------
1972 dnl See if the poll function really works.  Some platforms have poll(), but
1973 dnl it does not work for terminals or files.
1974 AC_DEFUN([CF_FUNC_POLL],[
1975 tty 2>&1 >/dev/null || { AC_CHECK_FUNCS(posix_openpt) }
1976 AC_CACHE_CHECK(if poll really works,cf_cv_working_poll,[
1977 AC_TRY_RUN([
1978 #include <stdlib.h>
1979 #include <stdio.h>
1980 #include <unistd.h>
1981 #include <fcntl.h>
1982 #ifdef HAVE_POLL_H
1983 #include <poll.h>
1984 #else
1985 #include <sys/poll.h>
1986 #endif
1987 int main(void) {
1988         struct pollfd myfds;
1989         int ret;
1990
1991         /* check for Darwin bug with respect to "devices" */
1992         myfds.fd = open("/dev/null", 1);        /* O_WRONLY */
1993         if (myfds.fd < 0)
1994                 myfds.fd = 0;
1995         myfds.events = POLLIN;
1996         myfds.revents = 0;
1997
1998         ret = poll(&myfds, 1, 100);
1999
2000         if (ret < 0 || (myfds.revents & POLLNVAL)) {
2001                 ret = -1;
2002         } else {
2003                 int fd = 0;
2004                 if (!isatty(fd)) {
2005                         fd = open("/dev/tty", 2);       /* O_RDWR */
2006                 }
2007 #ifdef HAVE_POSIX_OPENPT
2008                 if (fd < 0) {
2009                         fd = posix_openpt(O_RDWR);
2010                 }
2011 #endif
2012
2013                 if (fd >= 0) {
2014                         /* also check with standard input */
2015                         myfds.fd = fd;
2016                         myfds.events = POLLIN;
2017                         myfds.revents = 0;
2018                         ret = poll(&myfds, 1, 100);
2019                 } else {
2020                         ret = -1;
2021                 }
2022         }
2023         ${cf_cv_main_return:-return}(ret < 0);
2024 }],
2025         [cf_cv_working_poll=yes],
2026         [cf_cv_working_poll=no],
2027         [cf_cv_working_poll=unknown])])
2028 test "$cf_cv_working_poll" = "yes" && AC_DEFINE(HAVE_WORKING_POLL,1,[Define to 1 if the poll function seems to work])
2029 ])dnl
2030 dnl ---------------------------------------------------------------------------
2031 dnl CF_FUNC_TERMIOS version: 3 updated: 2012/10/06 17:56:13
2032 dnl ---------------
2033 dnl Some old/broken variations define tcgetattr() only as a macro in
2034 dnl termio(s).h
2035 AC_DEFUN([CF_FUNC_TERMIOS],[
2036 AC_REQUIRE([CF_STRUCT_TERMIOS])
2037 AC_CACHE_CHECK(for tcgetattr, cf_cv_have_tcgetattr,[
2038 AC_TRY_LINK([
2039 #include <sys/types.h>
2040 #ifdef HAVE_UNISTD_H
2041 #include <unistd.h>
2042 #endif
2043 #ifdef HAVE_TERMIOS_H
2044 #include <termios.h>
2045 #define TTY struct termios
2046 #else
2047 #ifdef HAVE_TERMIO_H
2048 #include <termio.h>
2049 #define TTY struct termio
2050 #endif
2051 #endif
2052 ],[
2053 TTY foo;
2054 tcgetattr(1, &foo);],
2055 [cf_cv_have_tcgetattr=yes],
2056 [cf_cv_have_tcgetattr=no])])
2057 test "$cf_cv_have_tcgetattr" = yes && AC_DEFINE(HAVE_TCGETATTR,1,[Define to 1 if we have tcgetattr])
2058 ])dnl
2059 dnl ---------------------------------------------------------------------------
2060 dnl CF_FUNC_VSSCANF version: 6 updated: 2015/04/18 08:56:57
2061 dnl ---------------
2062 dnl Check for vsscanf() function, which is in c9x but generally not in earlier
2063 dnl versions of C.  It is in the GNU C library, and can often be simulated by
2064 dnl other functions.
2065 AC_DEFUN([CF_FUNC_VSSCANF],
2066 [
2067 AC_CACHE_CHECK(for vsscanf function or workaround,cf_cv_func_vsscanf,[
2068 AC_TRY_LINK([
2069 #include <stdarg.h>
2070 #include <stdio.h>],[
2071         va_list ap;
2072         vsscanf("from", "%d", ap)],[cf_cv_func_vsscanf=vsscanf],[
2073 AC_TRY_LINK([
2074 #include <stdarg.h>
2075 #include <stdio.h>],[
2076         FILE strbuf;
2077         char *str = "from";
2078
2079         strbuf._flag = _IOREAD;
2080         strbuf._ptr = strbuf._base = (unsigned char *) str;
2081         strbuf._cnt = strlen(str);
2082         strbuf._file = _NFILE;
2083         return (vfscanf(&strbuf, "%d", ap))],[cf_cv_func_vsscanf=vfscanf],[
2084 AC_TRY_LINK([
2085 #include <stdarg.h>
2086 #include <stdio.h>],[
2087         FILE strbuf;
2088         char *str = "from";
2089
2090         strbuf._flag = _IOREAD;
2091         strbuf._ptr = strbuf._base = (unsigned char *) str;
2092         strbuf._cnt = strlen(str);
2093         strbuf._file = _NFILE;
2094         return (_doscan(&strbuf, "%d", ap))],[cf_cv_func_vsscanf=_doscan],[
2095 cf_cv_func_vsscanf=no])])])])
2096
2097 case $cf_cv_func_vsscanf in
2098 (vsscanf) AC_DEFINE(HAVE_VSSCANF,1,[Define to 1 if we have vsscanf]);;
2099 (vfscanf) AC_DEFINE(HAVE_VFSCANF,1,[Define to 1 if we have vfscanf]);;
2100 (_doscan) AC_DEFINE(HAVE__DOSCAN,1,[Define to 1 if we have _doscan]);;
2101 esac
2102
2103 ])dnl
2104 dnl ---------------------------------------------------------------------------
2105 dnl CF_GCC_ATTRIBUTES version: 17 updated: 2015/04/12 15:39:00
2106 dnl -----------------
2107 dnl Test for availability of useful gcc __attribute__ directives to quiet
2108 dnl compiler warnings.  Though useful, not all are supported -- and contrary
2109 dnl to documentation, unrecognized directives cause older compilers to barf.
2110 AC_DEFUN([CF_GCC_ATTRIBUTES],
2111 [
2112 if test "$GCC" = yes
2113 then
2114 cat > conftest.i <<EOF
2115 #ifndef GCC_PRINTF
2116 #define GCC_PRINTF 0
2117 #endif
2118 #ifndef GCC_SCANF
2119 #define GCC_SCANF 0
2120 #endif
2121 #ifndef GCC_NORETURN
2122 #define GCC_NORETURN /* nothing */
2123 #endif
2124 #ifndef GCC_UNUSED
2125 #define GCC_UNUSED /* nothing */
2126 #endif
2127 EOF
2128 if test "$GCC" = yes
2129 then
2130         AC_CHECKING([for $CC __attribute__ directives])
2131 cat > conftest.$ac_ext <<EOF
2132 #line __oline__ "${as_me:-configure}"
2133 #include "confdefs.h"
2134 #include "conftest.h"
2135 #include "conftest.i"
2136 #if     GCC_PRINTF
2137 #define GCC_PRINTFLIKE(fmt,var) __attribute__((format(printf,fmt,var)))
2138 #else
2139 #define GCC_PRINTFLIKE(fmt,var) /*nothing*/
2140 #endif
2141 #if     GCC_SCANF
2142 #define GCC_SCANFLIKE(fmt,var)  __attribute__((format(scanf,fmt,var)))
2143 #else
2144 #define GCC_SCANFLIKE(fmt,var)  /*nothing*/
2145 #endif
2146 extern void wow(char *,...) GCC_SCANFLIKE(1,2);
2147 extern void oops(char *,...) GCC_PRINTFLIKE(1,2) GCC_NORETURN;
2148 extern void foo(void) GCC_NORETURN;
2149 int main(int argc GCC_UNUSED, char *argv[[]] GCC_UNUSED) { return 0; }
2150 EOF
2151         cf_printf_attribute=no
2152         cf_scanf_attribute=no
2153         for cf_attribute in scanf printf unused noreturn
2154         do
2155                 CF_UPPER(cf_ATTRIBUTE,$cf_attribute)
2156                 cf_directive="__attribute__(($cf_attribute))"
2157                 echo "checking for $CC $cf_directive" 1>&AC_FD_CC
2158
2159                 case $cf_attribute in
2160                 (printf)
2161                         cf_printf_attribute=yes
2162                         cat >conftest.h <<EOF
2163 #define GCC_$cf_ATTRIBUTE 1
2164 EOF
2165                         ;;
2166                 (scanf)
2167                         cf_scanf_attribute=yes
2168                         cat >conftest.h <<EOF
2169 #define GCC_$cf_ATTRIBUTE 1
2170 EOF
2171                         ;;
2172                 (*)
2173                         cat >conftest.h <<EOF
2174 #define GCC_$cf_ATTRIBUTE $cf_directive
2175 EOF
2176                         ;;
2177                 esac
2178
2179                 if AC_TRY_EVAL(ac_compile); then
2180                         test -n "$verbose" && AC_MSG_RESULT(... $cf_attribute)
2181                         cat conftest.h >>confdefs.h
2182                         case $cf_attribute in
2183                         (noreturn)
2184                                 AC_DEFINE_UNQUOTED(GCC_NORETURN,$cf_directive,[Define to noreturn-attribute for gcc])
2185                                 ;;
2186                         (printf)
2187                                 cf_value='/* nothing */'
2188                                 if test "$cf_printf_attribute" != no ; then
2189                                         cf_value='__attribute__((format(printf,fmt,var)))'
2190                                         AC_DEFINE(GCC_PRINTF,1,[Define to 1 if the compiler supports gcc-like printf attribute.])
2191                                 fi
2192                                 AC_DEFINE_UNQUOTED(GCC_PRINTFLIKE(fmt,var),$cf_value,[Define to printf-attribute for gcc])
2193                                 ;;
2194                         (scanf)
2195                                 cf_value='/* nothing */'
2196                                 if test "$cf_scanf_attribute" != no ; then
2197                                         cf_value='__attribute__((format(scanf,fmt,var)))'
2198                                         AC_DEFINE(GCC_SCANF,1,[Define to 1 if the compiler supports gcc-like scanf attribute.])
2199                                 fi
2200                                 AC_DEFINE_UNQUOTED(GCC_SCANFLIKE(fmt,var),$cf_value,[Define to sscanf-attribute for gcc])
2201                                 ;;
2202                         (unused)
2203                                 AC_DEFINE_UNQUOTED(GCC_UNUSED,$cf_directive,[Define to unused-attribute for gcc])
2204                                 ;;
2205                         esac
2206                 fi
2207         done
2208 else
2209         fgrep define conftest.i >>confdefs.h
2210 fi
2211 rm -rf conftest*
2212 fi
2213 ])dnl
2214 dnl ---------------------------------------------------------------------------
2215 dnl CF_GCC_VERSION version: 7 updated: 2012/10/18 06:46:33
2216 dnl --------------
2217 dnl Find version of gcc
2218 AC_DEFUN([CF_GCC_VERSION],[
2219 AC_REQUIRE([AC_PROG_CC])
2220 GCC_VERSION=none
2221 if test "$GCC" = yes ; then
2222         AC_MSG_CHECKING(version of $CC)
2223         GCC_VERSION="`${CC} --version 2>/dev/null | sed -e '2,$d' -e 's/^.*(GCC[[^)]]*) //' -e 's/^.*(Debian[[^)]]*) //' -e 's/^[[^0-9.]]*//' -e 's/[[^0-9.]].*//'`"
2224         test -z "$GCC_VERSION" && GCC_VERSION=unknown
2225         AC_MSG_RESULT($GCC_VERSION)
2226 fi
2227 ])dnl
2228 dnl ---------------------------------------------------------------------------
2229 dnl CF_GCC_WARNINGS version: 32 updated: 2015/04/12 15:39:00
2230 dnl ---------------
2231 dnl Check if the compiler supports useful warning options.  There's a few that
2232 dnl we don't use, simply because they're too noisy:
2233 dnl
2234 dnl     -Wconversion (useful in older versions of gcc, but not in gcc 2.7.x)
2235 dnl     -Wredundant-decls (system headers make this too noisy)
2236 dnl     -Wtraditional (combines too many unrelated messages, only a few useful)
2237 dnl     -Wwrite-strings (too noisy, but should review occasionally).  This
2238 dnl             is enabled for ncurses using "--enable-const".
2239 dnl     -pedantic
2240 dnl
2241 dnl Parameter:
2242 dnl     $1 is an optional list of gcc warning flags that a particular
2243 dnl             application might want to use, e.g., "no-unused" for
2244 dnl             -Wno-unused
2245 dnl Special:
2246 dnl     If $with_ext_const is "yes", add a check for -Wwrite-strings
2247 dnl
2248 AC_DEFUN([CF_GCC_WARNINGS],
2249 [
2250 AC_REQUIRE([CF_GCC_VERSION])
2251 CF_INTEL_COMPILER(GCC,INTEL_COMPILER,CFLAGS)
2252 CF_CLANG_COMPILER(GCC,CLANG_COMPILER,CFLAGS)
2253
2254 cat > conftest.$ac_ext <<EOF
2255 #line __oline__ "${as_me:-configure}"
2256 int main(int argc, char *argv[[]]) { return (argv[[argc-1]] == 0) ; }
2257 EOF
2258
2259 if test "$INTEL_COMPILER" = yes
2260 then
2261 # The "-wdXXX" options suppress warnings:
2262 # remark #1419: external declaration in primary source file
2263 # remark #1683: explicit conversion of a 64-bit integral type to a smaller integral type (potential portability problem)
2264 # remark #1684: conversion from pointer to same-sized integral type (potential portability problem)
2265 # remark #193: zero used for undefined preprocessing identifier
2266 # remark #593: variable "curs_sb_left_arrow" was set but never used
2267 # remark #810: conversion from "int" to "Dimension={unsigned short}" may lose significant bits
2268 # remark #869: parameter "tw" was never referenced
2269 # remark #981: operands are evaluated in unspecified order
2270 # warning #279: controlling expression is constant
2271
2272         AC_CHECKING([for $CC warning options])
2273         cf_save_CFLAGS="$CFLAGS"
2274         EXTRA_CFLAGS="-Wall"
2275         for cf_opt in \
2276                 wd1419 \
2277                 wd1683 \
2278                 wd1684 \
2279                 wd193 \
2280                 wd593 \
2281                 wd279 \
2282                 wd810 \
2283                 wd869 \
2284                 wd981
2285         do
2286                 CFLAGS="$cf_save_CFLAGS $EXTRA_CFLAGS -$cf_opt"
2287                 if AC_TRY_EVAL(ac_compile); then
2288                         test -n "$verbose" && AC_MSG_RESULT(... -$cf_opt)
2289                         EXTRA_CFLAGS="$EXTRA_CFLAGS -$cf_opt"
2290                 fi
2291         done
2292         CFLAGS="$cf_save_CFLAGS"
2293
2294 elif test "$GCC" = yes
2295 then
2296         AC_CHECKING([for $CC warning options])
2297         cf_save_CFLAGS="$CFLAGS"
2298         EXTRA_CFLAGS=
2299         cf_warn_CONST=""
2300         test "$with_ext_const" = yes && cf_warn_CONST="Wwrite-strings"
2301         cf_gcc_warnings="Wignored-qualifiers Wlogical-op Wvarargs"
2302         test "x$CLANG_COMPILER" = xyes && cf_gcc_warnings=
2303         for cf_opt in W Wall \
2304                 Wbad-function-cast \
2305                 Wcast-align \
2306                 Wcast-qual \
2307                 Wdeclaration-after-statement \
2308                 Wextra \
2309                 Winline \
2310                 Wmissing-declarations \
2311                 Wmissing-prototypes \
2312                 Wnested-externs \
2313                 Wpointer-arith \
2314                 Wshadow \
2315                 Wstrict-prototypes \
2316                 Wundef $cf_gcc_warnings $cf_warn_CONST $1
2317         do
2318                 CFLAGS="$cf_save_CFLAGS $EXTRA_CFLAGS -$cf_opt"
2319                 if AC_TRY_EVAL(ac_compile); then
2320                         test -n "$verbose" && AC_MSG_RESULT(... -$cf_opt)
2321                         case $cf_opt in
2322                         (Wcast-qual)
2323                                 CPPFLAGS="$CPPFLAGS -DXTSTRINGDEFINES"
2324                                 ;;
2325                         (Winline)
2326                                 case $GCC_VERSION in
2327                                 ([[34]].*)
2328                                         CF_VERBOSE(feature is broken in gcc $GCC_VERSION)
2329                                         continue;;
2330                                 esac
2331                                 ;;
2332                         (Wpointer-arith)
2333                                 case $GCC_VERSION in
2334                                 ([[12]].*)
2335                                         CF_VERBOSE(feature is broken in gcc $GCC_VERSION)
2336                                         continue;;
2337                                 esac
2338                                 ;;
2339                         esac
2340                         EXTRA_CFLAGS="$EXTRA_CFLAGS -$cf_opt"
2341                 fi
2342         done
2343         CFLAGS="$cf_save_CFLAGS"
2344 fi
2345 rm -rf conftest*
2346
2347 AC_SUBST(EXTRA_CFLAGS)
2348 ])dnl
2349 dnl ---------------------------------------------------------------------------
2350 dnl CF_GETOPT_HEADER version: 6 updated: 2014/07/22 14:45:54
2351 dnl ----------------
2352 dnl Check for getopt's variables which are commonly defined in stdlib.h,
2353 dnl unistd.h or (nonstandard) in getopt.h
2354 AC_DEFUN([CF_GETOPT_HEADER],
2355 [
2356 AC_HAVE_HEADERS(unistd.h getopt.h)
2357 AC_CACHE_CHECK(for header declaring getopt variables,cf_cv_getopt_header,[
2358 cf_cv_getopt_header=none
2359 for cf_header in stdio.h stdlib.h unistd.h getopt.h
2360 do
2361 AC_TRY_COMPILE([
2362 #include <$cf_header>],
2363 [int x = optind; char *y = optarg],
2364 [cf_cv_getopt_header=$cf_header
2365  break])
2366 done
2367 ])
2368 if test $cf_cv_getopt_header != none ; then
2369         AC_DEFINE(HAVE_GETOPT_HEADER,1,[Define to 1 if getopt variables are declared in header])
2370 fi
2371 if test $cf_cv_getopt_header = getopt.h ; then
2372         AC_DEFINE(NEED_GETOPT_H,1,[Define to 1 if we must include getopt.h])
2373 fi
2374 ])dnl
2375 dnl ---------------------------------------------------------------------------
2376 dnl CF_GNATPREP_OPT_T version: 1 updated: 2014/08/02 18:37:25
2377 dnl -----------------
2378 AC_DEFUN([CF_GNATPREP_OPT_T],[
2379 AC_CACHE_CHECK(if GNATPREP supports -T option,cf_cv_gnatprep_opt_t,[
2380 cf_cv_gnatprep_opt_t=no
2381 gnatprep -T 2>/dev/null >/dev/null && cf_cv_gnatprep_opt_t=yes
2382 ])
2383 test "$cf_cv_gnatprep_opt_t" = yes && GNATPREP_OPTS="-T $GNATPREP_OPTS"
2384 AC_SUBST(GNATPREP_OPTS)
2385 ])dnl
2386 dnl ---------------------------------------------------------------------------
2387 dnl CF_GNAT_GENERICS version: 3 updated: 2015/04/17 21:13:04
2388 dnl ----------------
2389 AC_DEFUN([CF_GNAT_GENERICS],
2390 [
2391 AC_REQUIRE([CF_GNAT_VERSION])
2392
2393 AC_MSG_CHECKING(if GNAT supports generics)
2394 case $cf_gnat_version in
2395 (3.[[1-9]]*|[[4-9]].*)
2396         cf_gnat_generics=yes
2397         ;;
2398 (*)
2399         cf_gnat_generics=no
2400         ;;
2401 esac
2402 AC_MSG_RESULT($cf_gnat_generics)
2403
2404 if test "$cf_gnat_generics" = yes
2405 then
2406         cf_compile_generics=generics
2407         cf_generic_objects="\${GENOBJS}"
2408 else
2409         cf_compile_generics=
2410         cf_generic_objects=
2411 fi
2412
2413 AC_SUBST(cf_compile_generics)
2414 AC_SUBST(cf_generic_objects)
2415 ])dnl
2416 dnl ---------------------------------------------------------------------------
2417 dnl CF_GNAT_PROJECTS version: 8 updated: 2015/04/17 21:13:04
2418 dnl ----------------
2419 dnl GNAT projects are configured with ".gpr" project files.
2420 dnl GNAT libraries are a further development, using the project feature.
2421 AC_DEFUN([CF_GNAT_PROJECTS],
2422 [
2423 AC_REQUIRE([CF_GNAT_VERSION])
2424 AC_REQUIRE([CF_DISABLE_GNAT_PROJECTS])
2425
2426 cf_gnat_libraries=no
2427 cf_gnat_projects=no
2428
2429 if test "$enable_gnat_projects" != no ; then
2430 AC_MSG_CHECKING(if GNAT supports project files)
2431 case $cf_gnat_version in
2432 (3.[[0-9]]*)
2433         ;;
2434 (*)
2435         case $cf_cv_system_name in
2436         (cygwin*|msys*)
2437                 ;;
2438         (*)
2439                 mkdir conftest.src conftest.bin conftest.lib
2440                 cd conftest.src
2441                 rm -rf conftest* *~conftest*
2442                 cat >>library.gpr <<CF_EOF
2443 project Library is
2444   Kind := External ("LIB_KIND");
2445   for Library_Name use "ConfTest";
2446   for Object_Dir use ".";
2447   for Library_ALI_Dir use External("LIBRARY_DIR");
2448   for Library_Version use External ("SONAME");
2449   for Library_Kind use Kind;
2450   for Library_Dir use External("BUILD_DIR");
2451   Source_Dir := External ("SOURCE_DIR");
2452   for Source_Dirs use (Source_Dir);
2453 end Library;
2454 CF_EOF
2455                 cat >>confpackage.ads <<CF_EOF
2456 package ConfPackage is
2457    procedure conftest;
2458 end ConfPackage;
2459 CF_EOF
2460                 cat >>confpackage.adb <<CF_EOF
2461 with Text_IO;
2462 package body ConfPackage is
2463    procedure conftest is
2464    begin
2465       Text_IO.Put ("Hello World");
2466       Text_IO.New_Line;
2467    end conftest;
2468 end ConfPackage;
2469 CF_EOF
2470                 if ( $cf_ada_make $ADAFLAGS \
2471                                 -Plibrary.gpr \
2472                                 -XBUILD_DIR=`cd ../conftest.bin;pwd` \
2473                                 -XLIBRARY_DIR=`cd ../conftest.lib;pwd` \
2474                                 -XSOURCE_DIR=`pwd` \
2475                                 -XSONAME=libConfTest.so.1 \
2476                                 -XLIB_KIND=static 1>&AC_FD_CC 2>&1 ) ; then
2477                         cf_gnat_projects=yes
2478                 fi
2479                 cd ..
2480                 if test -f conftest.lib/confpackage.ali
2481                 then
2482                         cf_gnat_libraries=yes
2483                 fi
2484                 rm -rf conftest* *~conftest*
2485                 ;;
2486         esac
2487         ;;
2488 esac
2489 AC_MSG_RESULT($cf_gnat_projects)
2490 fi # enable_gnat_projects
2491
2492 if test $cf_gnat_projects = yes
2493 then
2494         AC_MSG_CHECKING(if GNAT supports libraries)
2495         AC_MSG_RESULT($cf_gnat_libraries)
2496 fi
2497
2498 if test "$cf_gnat_projects" = yes
2499 then
2500         USE_OLD_MAKERULES="#"
2501         USE_GNAT_PROJECTS=""
2502 else
2503         USE_OLD_MAKERULES=""
2504         USE_GNAT_PROJECTS="#"
2505 fi
2506
2507 if test "$cf_gnat_libraries" = yes
2508 then
2509         USE_GNAT_LIBRARIES=""
2510 else
2511         USE_GNAT_LIBRARIES="#"
2512 fi
2513
2514 AC_SUBST(USE_OLD_MAKERULES)
2515 AC_SUBST(USE_GNAT_PROJECTS)
2516 AC_SUBST(USE_GNAT_LIBRARIES)
2517 ])dnl
2518 dnl ---------------------------------------------------------------------------
2519 dnl CF_GNAT_SIGINT version: 1 updated: 2011/03/27 20:07:59
2520 dnl --------------
2521 dnl Check if gnat supports SIGINT, and presumably tasking.  For the latter, it
2522 dnl is noted that gnat may compile a tasking unit even for configurations which
2523 dnl fail at runtime.
2524 AC_DEFUN([CF_GNAT_SIGINT],[
2525 AC_CACHE_CHECK(if GNAT supports SIGINT,cf_cv_gnat_sigint,[
2526 CF_GNAT_TRY_LINK([with Ada.Interrupts.Names;
2527
2528 package ConfTest is
2529
2530    pragma Warnings (Off);  --  the next pragma exists since 3.11p
2531    pragma Unreserve_All_Interrupts;
2532    pragma Warnings (On);
2533
2534    protected Process is
2535       procedure Stop;
2536       function Continue return Boolean;
2537       pragma Attach_Handler (Stop, Ada.Interrupts.Names.SIGINT);
2538    private
2539       Done : Boolean := False;
2540    end Process;
2541
2542 end ConfTest;],
2543 [package body ConfTest is
2544    protected body Process is
2545       procedure Stop is
2546       begin
2547          Done := True;
2548       end Stop;
2549       function Continue return Boolean is
2550       begin
2551          return not Done;
2552       end Continue;
2553    end Process;
2554 end ConfTest;],
2555         [cf_cv_gnat_sigint=yes],
2556         [cf_cv_gnat_sigint=no])])
2557
2558 if test $cf_cv_gnat_sigint = yes ; then
2559         USE_GNAT_SIGINT=""
2560 else
2561         USE_GNAT_SIGINT="#"
2562 fi
2563 AC_SUBST(USE_GNAT_SIGINT)
2564 ])dnl
2565 dnl ---------------------------------------------------------------------------
2566 dnl CF_GNAT_TRY_LINK version: 3 updated: 2011/03/19 14:47:45
2567 dnl ----------------
2568 dnl Verify that a test program compiles/links with GNAT.
2569 dnl $cf_ada_make is set to the program that compiles/links
2570 dnl $ADAFLAGS may be set to the GNAT flags.
2571 dnl
2572 dnl $1 is the text of the spec
2573 dnl $2 is the text of the body
2574 dnl $3 is the shell command to execute if successful
2575 dnl $4 is the shell command to execute if not successful
2576 AC_DEFUN([CF_GNAT_TRY_LINK],
2577 [
2578 rm -rf conftest* *~conftest*
2579 cat >>conftest.ads <<CF_EOF
2580 $1
2581 CF_EOF
2582 cat >>conftest.adb <<CF_EOF
2583 $2
2584 CF_EOF
2585 if ( $cf_ada_make $ADAFLAGS conftest 1>&AC_FD_CC 2>&1 ) ; then
2586 ifelse($3,,      :,[      $3])
2587 ifelse($4,,,[else
2588    $4])
2589 fi
2590 rm -rf conftest* *~conftest*
2591 ])dnl
2592 dnl ---------------------------------------------------------------------------
2593 dnl CF_GNAT_TRY_RUN version: 5 updated: 2011/03/19 14:47:45
2594 dnl ---------------
2595 dnl Verify that a test program compiles and runs with GNAT
2596 dnl $cf_ada_make is set to the program that compiles/links
2597 dnl $ADAFLAGS may be set to the GNAT flags.
2598 dnl
2599 dnl $1 is the text of the spec
2600 dnl $2 is the text of the body
2601 dnl $3 is the shell command to execute if successful
2602 dnl $4 is the shell command to execute if not successful
2603 AC_DEFUN([CF_GNAT_TRY_RUN],
2604 [
2605 rm -rf conftest* *~conftest*
2606 cat >>conftest.ads <<CF_EOF
2607 $1
2608 CF_EOF
2609 cat >>conftest.adb <<CF_EOF
2610 $2
2611 CF_EOF
2612 if ( $cf_ada_make $ADAFLAGS conftest 1>&AC_FD_CC 2>&1 ) ; then
2613    if ( ./conftest 1>&AC_FD_CC 2>&1 ) ; then
2614 ifelse($3,,      :,[      $3])
2615 ifelse($4,,,[   else
2616       $4])
2617    fi
2618 ifelse($4,,,[else
2619    $4])
2620 fi
2621 rm -rf conftest* *~conftest*
2622 ])dnl
2623 dnl ---------------------------------------------------------------------------
2624 dnl CF_GNAT_VERSION version: 20 updated: 2015/04/18 08:56:57
2625 dnl ---------------
2626 dnl Verify version of GNAT.
2627 AC_DEFUN([CF_GNAT_VERSION],
2628 [
2629 AC_MSG_CHECKING(for gnat version)
2630 cf_gnat_version=`${cf_ada_make:-gnatmake} -v 2>&1 | \
2631         grep '[[0-9]].[[0-9]][[0-9]]*' |\
2632         sed -e '2,$d' -e 's/[[^0-9 \.]]//g' -e 's/^[[ ]]*//' -e 's/ .*//'`
2633 AC_MSG_RESULT($cf_gnat_version)
2634
2635 case $cf_gnat_version in
2636 (3.1[[1-9]]*|3.[[2-9]]*|[[4-9]].*|20[[0-9]][[0-9]])
2637         cf_cv_prog_gnat_correct=yes
2638         ;;
2639 (*)
2640         AC_MSG_WARN(Unsupported GNAT version $cf_gnat_version. We require 3.11 or better. Disabling Ada95 binding.)
2641         cf_cv_prog_gnat_correct=no
2642         ;;
2643 esac
2644 ])
2645 dnl ---------------------------------------------------------------------------
2646 dnl CF_GNU_SOURCE version: 6 updated: 2005/07/09 13:23:07
2647 dnl -------------
2648 dnl Check if we must define _GNU_SOURCE to get a reasonable value for
2649 dnl _XOPEN_SOURCE, upon which many POSIX definitions depend.  This is a defect
2650 dnl (or misfeature) of glibc2, which breaks portability of many applications,
2651 dnl since it is interwoven with GNU extensions.
2652 dnl
2653 dnl Well, yes we could work around it...
2654 AC_DEFUN([CF_GNU_SOURCE],
2655 [
2656 AC_CACHE_CHECK(if we must define _GNU_SOURCE,cf_cv_gnu_source,[
2657 AC_TRY_COMPILE([#include <sys/types.h>],[
2658 #ifndef _XOPEN_SOURCE
2659 make an error
2660 #endif],
2661         [cf_cv_gnu_source=no],
2662         [cf_save="$CPPFLAGS"
2663          CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
2664          AC_TRY_COMPILE([#include <sys/types.h>],[
2665 #ifdef _XOPEN_SOURCE
2666 make an error
2667 #endif],
2668         [cf_cv_gnu_source=no],
2669         [cf_cv_gnu_source=yes])
2670         CPPFLAGS="$cf_save"
2671         ])
2672 ])
2673 test "$cf_cv_gnu_source" = yes && CPPFLAGS="$CPPFLAGS -D_GNU_SOURCE"
2674 ])dnl
2675 dnl ---------------------------------------------------------------------------
2676 dnl CF_GPP_LIBRARY version: 12 updated: 2015/04/17 21:13:04
2677 dnl --------------
2678 dnl If we're trying to use g++, test if libg++ is installed (a rather common
2679 dnl problem :-).  If we have the compiler but no library, we'll be able to
2680 dnl configure, but won't be able to build the c++ demo program.
2681 AC_DEFUN([CF_GPP_LIBRARY],
2682 [
2683 cf_cxx_library=unknown
2684 case $cf_cv_system_name in
2685 (os2*)
2686         cf_gpp_libname=gpp
2687         ;;
2688 (*)
2689         cf_gpp_libname=g++
2690         ;;
2691 esac
2692 if test "$GXX" = yes; then
2693         AC_MSG_CHECKING([for lib$cf_gpp_libname])
2694         cf_save="$LIBS"
2695         CF_ADD_LIB($cf_gpp_libname)
2696         AC_TRY_LINK([
2697 #include <$cf_gpp_libname/builtin.h>
2698         ],
2699         [two_arg_error_handler_t foo2 = lib_error_handler],
2700         [cf_cxx_library=yes
2701          CF_ADD_LIB($cf_gpp_libname,CXXLIBS)
2702          if test "$cf_gpp_libname" = cpp ; then
2703             AC_DEFINE(HAVE_GPP_BUILTIN_H,1,[Define to 1 if we have gpp builtin.h])
2704          else
2705             AC_DEFINE(HAVE_GXX_BUILTIN_H,1,[Define to 1 if we have g++ builtin.h])
2706          fi],
2707         [AC_TRY_LINK([
2708 #include <builtin.h>
2709         ],
2710         [two_arg_error_handler_t foo2 = lib_error_handler],
2711         [cf_cxx_library=yes
2712          CF_ADD_LIB($cf_gpp_libname,CXXLIBS)
2713          AC_DEFINE(HAVE_BUILTIN_H,1,[Define to 1 if we have builtin.h])],
2714         [cf_cxx_library=no])])
2715         LIBS="$cf_save"
2716         AC_MSG_RESULT($cf_cxx_library)
2717 fi
2718 ])dnl
2719 dnl ---------------------------------------------------------------------------
2720 dnl CF_GXX_VERSION version: 7 updated: 2012/06/16 14:55:39
2721 dnl --------------
2722 dnl Check for version of g++
2723 AC_DEFUN([CF_GXX_VERSION],[
2724 AC_REQUIRE([AC_PROG_CPP])
2725 GXX_VERSION=none
2726 if test "$GXX" = yes; then
2727         AC_MSG_CHECKING(version of ${CXX:-g++})
2728         GXX_VERSION="`${CXX:-g++} --version| sed -e '2,$d' -e 's/^.*(GCC) //' -e 's/^[[^0-9.]]*//' -e 's/[[^0-9.]].*//'`"
2729         test -z "$GXX_VERSION" && GXX_VERSION=unknown
2730         AC_MSG_RESULT($GXX_VERSION)
2731 fi
2732 ])dnl
2733 dnl ---------------------------------------------------------------------------
2734 dnl CF_GXX_WARNINGS version: 9 updated: 2015/04/17 21:13:04
2735 dnl ---------------
2736 dnl Check if the compiler supports useful warning options.
2737 dnl
2738 dnl Most of gcc's options apply to g++, except:
2739 dnl     -Wbad-function-cast
2740 dnl     -Wmissing-declarations
2741 dnl     -Wnested-externs
2742 dnl
2743 dnl Omit a few (for now):
2744 dnl     -Winline
2745 dnl
2746 dnl Parameter:
2747 dnl     $1 is an optional list of g++ warning flags that a particular
2748 dnl             application might want to use, e.g., "no-unused" for
2749 dnl             -Wno-unused
2750 dnl Special:
2751 dnl     If $with_ext_const is "yes", add a check for -Wwrite-strings
2752 dnl
2753 AC_DEFUN([CF_GXX_WARNINGS],
2754 [
2755
2756 CF_INTEL_COMPILER(GXX,INTEL_CPLUSPLUS,CXXFLAGS)
2757 CF_CLANG_COMPILER(GXX,CLANG_CPLUSPLUS,CXXFLAGS)
2758
2759 AC_REQUIRE([CF_GXX_VERSION])
2760
2761 AC_LANG_SAVE
2762 AC_LANG_CPLUSPLUS
2763
2764 cat > conftest.$ac_ext <<EOF
2765 #line __oline__ "configure"
2766 int main(int argc, char *argv[[]]) { return (argv[[argc-1]] == 0) ; }
2767 EOF
2768
2769 if test "$INTEL_CPLUSPLUS" = yes
2770 then
2771 # The "-wdXXX" options suppress warnings:
2772 # remark #1419: external declaration in primary source file
2773 # remark #1682: implicit conversion of a 64-bit integral type to a smaller integral type (potential portability problem)
2774 # remark #1683: explicit conversion of a 64-bit integral type to a smaller integral type (potential portability problem)
2775 # remark #1684: conversion from pointer to same-sized integral type (potential portability problem)
2776 # remark #193: zero used for undefined preprocessing identifier
2777 # remark #593: variable "curs_sb_left_arrow" was set but never used
2778 # remark #810: conversion from "int" to "Dimension={unsigned short}" may lose significant bits
2779 # remark #869: parameter "tw" was never referenced
2780 # remark #981: operands are evaluated in unspecified order
2781 # warning #269: invalid format string conversion
2782
2783         AC_CHECKING([for $CC warning options])
2784         cf_save_CXXFLAGS="$CXXFLAGS"
2785         EXTRA_CXXFLAGS="-Wall"
2786         for cf_opt in \
2787                 wd1419 \
2788                 wd1682 \
2789                 wd1683 \
2790                 wd1684 \
2791                 wd193 \
2792                 wd279 \
2793                 wd593 \
2794                 wd810 \
2795                 wd869 \
2796                 wd981
2797         do
2798                 CXXFLAGS="$cf_save_CXXFLAGS $EXTRA_CXXFLAGS -$cf_opt"
2799                 if AC_TRY_EVAL(ac_compile); then
2800                         test -n "$verbose" && AC_MSG_RESULT(... -$cf_opt)
2801                         EXTRA_CXXFLAGS="$EXTRA_CXXFLAGS -$cf_opt"
2802                 fi
2803         done
2804         CXXFLAGS="$cf_save_CXXFLAGS"
2805
2806 elif test "$GXX" = yes
2807 then
2808         AC_CHECKING([for $CXX warning options])
2809         cf_save_CXXFLAGS="$CXXFLAGS"
2810         EXTRA_CXXFLAGS="-W -Wall"
2811         cf_gxx_extra_warnings=""
2812         test "$with_ext_const" = yes && cf_gxx_extra_warnings="Wwrite-strings"
2813         case "$GCC_VERSION" in
2814         ([[1-2]].*)
2815                 ;;
2816         (*)
2817                 cf_gxx_extra_warnings="$cf_gxx_extra_warnings Weffc++"
2818                 ;;
2819         esac
2820         for cf_opt in \
2821                 Wabi \
2822                 fabi-version=0 \
2823                 Wextra \
2824                 Wignored-qualifiers \
2825                 Wlogical-op \
2826                 Woverloaded-virtual \
2827                 Wsign-promo \
2828                 Wsynth \
2829                 Wold-style-cast \
2830                 Wcast-align \
2831                 Wcast-qual \
2832                 Wpointer-arith \
2833                 Wshadow \
2834                 Wundef $cf_gxx_extra_warnings $1
2835         do
2836                 CXXFLAGS="$cf_save_CXXFLAGS $EXTRA_CXXFLAGS -Werror -$cf_opt"
2837                 if AC_TRY_EVAL(ac_compile); then
2838                         test -n "$verbose" && AC_MSG_RESULT(... -$cf_opt)
2839                         EXTRA_CXXFLAGS="$EXTRA_CXXFLAGS -$cf_opt"
2840                 else
2841                         test -n "$verbose" && AC_MSG_RESULT(... no -$cf_opt)
2842                 fi
2843         done
2844         CXXFLAGS="$cf_save_CXXFLAGS"
2845 fi
2846
2847 rm -rf conftest*
2848 AC_LANG_RESTORE
2849 AC_SUBST(EXTRA_CXXFLAGS)
2850 ])dnl
2851 dnl ---------------------------------------------------------------------------
2852 dnl CF_HASHED_DB version: 7 updated: 2015/04/18 08:56:57
2853 dnl ------------
2854 dnl Look for an instance of the Berkeley hashed database.
2855 dnl
2856 dnl $1 = optional parameter, to specify install-prefix for the database.
2857 AC_DEFUN([CF_HASHED_DB],
2858 [
2859 ifelse([$1],,,[
2860 case $1 in
2861 (yes|*able*)
2862         ;;
2863 (*)
2864         if test -d "$1" ; then
2865                 CF_ADD_INCDIR($1/include)
2866                 CF_ADD_LIBDIR($1/lib)
2867         else
2868                 case "$1" in
2869                 (./*|../*|/*)
2870                         AC_MSG_WARN(no such directory $1)
2871                         ;;
2872                 (*)
2873                         CF_FIND_SUB_INCDIR($1)
2874                         CF_FIND_SUB_LIBDIR($1)
2875                         ;;
2876                 esac
2877         fi
2878 esac
2879 ])
2880 AC_CHECK_HEADER(db.h,[
2881 CF_HASHED_DB_VERSION
2882 if test "$cf_cv_hashed_db_version" = unknown ; then
2883         AC_MSG_ERROR(Cannot determine version of db)
2884 else
2885         CF_HASHED_DB_LIBS
2886         if test "$cf_cv_hashed_db_libs" = unknown ; then
2887                 AC_MSG_ERROR(Cannot determine library for db)
2888         elif test "$cf_cv_hashed_db_libs" != default ; then
2889                 CF_ADD_LIB($cf_cv_hashed_db_libs)
2890         fi
2891 fi
2892 ],[
2893         AC_MSG_ERROR(Cannot find db.h)
2894 ])
2895 ])dnl
2896 dnl ---------------------------------------------------------------------------
2897 dnl CF_HASHED_DB_LIBS version: 9 updated: 2010/05/29 16:31:02
2898 dnl -----------------
2899 dnl Given that we have the header and version for hashed database, find the
2900 dnl library information.
2901 AC_DEFUN([CF_HASHED_DB_LIBS],
2902 [
2903 AC_CACHE_CHECK(for db libraries, cf_cv_hashed_db_libs,[
2904 cf_cv_hashed_db_libs=unknown
2905 for cf_db_libs in "" db$cf_cv_hashed_db_version db-$cf_cv_hashed_db_version db ''
2906 do
2907         cf_save_libs="$LIBS"
2908         if test -n "$cf_db_libs"; then
2909                 CF_ADD_LIB($cf_db_libs)
2910         fi
2911         CF_MSG_LOG(checking for library "$cf_db_libs")
2912         AC_TRY_LINK([
2913 $ac_includes_default
2914 #include <db.h>
2915 ],[
2916         char *path = "/tmp/foo";
2917 #ifdef DB_VERSION_MAJOR
2918 #if DB_VERSION_MAJOR >= 4
2919         DB *result = 0;
2920         db_create(&result, NULL, 0);
2921         result->open(result,
2922                 NULL,
2923                 path,
2924                 path,
2925                 DB_HASH,
2926                 DB_CREATE,
2927                 0644);
2928 #elif DB_VERSION_MAJOR >= 3
2929         DB *result = 0;
2930         db_create(&result, NULL, 0);
2931         result->open(result,
2932                 path,
2933                 path,
2934                 DB_HASH,
2935                 DB_CREATE,
2936                 0644);
2937 #elif DB_VERSION_MAJOR >= 2
2938         DB *result = 0;
2939         db_open(path,
2940                 DB_HASH,
2941                 DB_CREATE,
2942                 0644,
2943                 (DB_ENV *) 0,
2944                 (DB_INFO *) 0,
2945                 &result);
2946 #endif /* DB_VERSION_MAJOR */
2947 #else
2948         DB *result = dbopen(path,
2949                      2,
2950                      0644,
2951                      DB_HASH,
2952                      0);
2953 #endif
2954         ${cf_cv_main_return:-return}(result != 0)
2955 ],[
2956         if test -n "$cf_db_libs" ; then
2957                 cf_cv_hashed_db_libs=$cf_db_libs
2958         else
2959                 cf_cv_hashed_db_libs=default
2960         fi
2961         LIBS="$cf_save_libs"
2962         break
2963 ])
2964         LIBS="$cf_save_libs"
2965 done
2966 ])
2967 ])dnl
2968 dnl ---------------------------------------------------------------------------
2969 dnl CF_HASHED_DB_VERSION version: 4 updated: 2014/04/12 16:47:01
2970 dnl --------------------
2971 dnl Given that we have the header file for hashed database, find the version
2972 dnl information.
2973 AC_DEFUN([CF_HASHED_DB_VERSION],
2974 [
2975 AC_CACHE_CHECK(for version of db, cf_cv_hashed_db_version,[
2976 cf_cv_hashed_db_version=unknown
2977
2978 for cf_db_version in 1 2 3 4 5 6
2979 do
2980         CF_MSG_LOG(checking for db version $cf_db_version)
2981         AC_TRY_COMPILE([
2982 $ac_includes_default
2983 #include <db.h>
2984
2985 #ifdef DB_VERSION_MAJOR
2986         /* db2 (DB_VERSION_MAJOR=2) has also DB_VERSION_MINOR, tested with 7 */
2987 #if $cf_db_version == DB_VERSION_MAJOR
2988         /* ok */
2989 #else
2990         make an error
2991 #endif
2992 #else
2993 #if $cf_db_version == 1
2994         /* ok: assuming this is DB 1.8.5 */
2995 #else
2996         make an error
2997 #endif
2998 #endif
2999 ],[DBT *foo = 0],[
3000         cf_cv_hashed_db_version=$cf_db_version
3001         break
3002         ])
3003 done
3004 ])
3005 ])dnl
3006 dnl ---------------------------------------------------------------------------
3007 dnl CF_HEADER_PATH version: 13 updated: 2015/04/15 19:08:48
3008 dnl --------------
3009 dnl Construct a search-list of directories for a nonstandard header-file
3010 dnl
3011 dnl Parameters
3012 dnl     $1 = the variable to return as result
3013 dnl     $2 = the package name
3014 AC_DEFUN([CF_HEADER_PATH],
3015 [
3016 $1=
3017
3018 # collect the current set of include-directories from compiler flags
3019 cf_header_path_list=""
3020 if test -n "${CFLAGS}${CPPFLAGS}" ; then
3021         for cf_header_path in $CPPFLAGS $CFLAGS
3022         do
3023                 case $cf_header_path in
3024                 (-I*)
3025                         cf_header_path=`echo ".$cf_header_path" |sed -e 's/^...//' -e 's,/include$,,'`
3026                         CF_ADD_SUBDIR_PATH($1,$2,include,$cf_header_path,NONE)
3027                         cf_header_path_list="$cf_header_path_list [$]$1"
3028                         ;;
3029                 esac
3030         done
3031 fi
3032
3033 # add the variations for the package we are looking for
3034 CF_SUBDIR_PATH($1,$2,include)
3035
3036 test "$includedir" != NONE && \
3037 test "$includedir" != "/usr/include" && \
3038 test -d "$includedir" && {
3039         test -d $includedir &&    $1="[$]$1 $includedir"
3040         test -d $includedir/$2 && $1="[$]$1 $includedir/$2"
3041 }
3042
3043 test "$oldincludedir" != NONE && \
3044 test "$oldincludedir" != "/usr/include" && \
3045 test -d "$oldincludedir" && {
3046         test -d $oldincludedir    && $1="[$]$1 $oldincludedir"
3047         test -d $oldincludedir/$2 && $1="[$]$1 $oldincludedir/$2"
3048 }
3049
3050 $1="[$]$1 $cf_header_path_list"
3051 ])dnl
3052 dnl ---------------------------------------------------------------------------
3053 dnl CF_HELP_MESSAGE version: 3 updated: 1998/01/14 10:56:23
3054 dnl ---------------
3055 dnl Insert text into the help-message, for readability, from AC_ARG_WITH.
3056 AC_DEFUN([CF_HELP_MESSAGE],
3057 [AC_DIVERT_HELP([$1])dnl
3058 ])dnl
3059 dnl ---------------------------------------------------------------------------
3060 dnl CF_INCLUDE_DIRS version: 10 updated: 2014/09/19 20:58:42
3061 dnl ---------------
3062 dnl Construct the list of include-options according to whether we're building
3063 dnl in the source directory or using '--srcdir=DIR' option.
3064 AC_DEFUN([CF_INCLUDE_DIRS],
3065 [
3066 if test "$srcdir" != "."; then
3067         CPPFLAGS="-I\${srcdir}/../include $CPPFLAGS"
3068 fi
3069 CPPFLAGS="-I../include $CPPFLAGS"
3070 if test "$srcdir" != "."; then
3071         CPPFLAGS="-I\${srcdir} $CPPFLAGS"
3072 fi
3073 CPPFLAGS="-I. $CPPFLAGS"
3074 AC_SUBST(CPPFLAGS)
3075 ])dnl
3076 dnl ---------------------------------------------------------------------------
3077 dnl CF_INTEL_COMPILER version: 7 updated: 2015/04/12 15:39:00
3078 dnl -----------------
3079 dnl Check if the given compiler is really the Intel compiler for Linux.  It
3080 dnl tries to imitate gcc, but does not return an error when it finds a mismatch
3081 dnl between prototypes, e.g., as exercised by CF_MISSING_CHECK.
3082 dnl
3083 dnl This macro should be run "soon" after AC_PROG_CC or AC_PROG_CPLUSPLUS, to
3084 dnl ensure that it is not mistaken for gcc/g++.  It is normally invoked from
3085 dnl the wrappers for gcc and g++ warnings.
3086 dnl
3087 dnl $1 = GCC (default) or GXX
3088 dnl $2 = INTEL_COMPILER (default) or INTEL_CPLUSPLUS
3089 dnl $3 = CFLAGS (default) or CXXFLAGS
3090 AC_DEFUN([CF_INTEL_COMPILER],[
3091 AC_REQUIRE([AC_CANONICAL_HOST])
3092 ifelse([$2],,INTEL_COMPILER,[$2])=no
3093
3094 if test "$ifelse([$1],,[$1],GCC)" = yes ; then
3095         case $host_os in
3096         (linux*|gnu*)
3097                 AC_MSG_CHECKING(if this is really Intel ifelse([$1],GXX,C++,C) compiler)
3098                 cf_save_CFLAGS="$ifelse([$3],,CFLAGS,[$3])"
3099                 ifelse([$3],,CFLAGS,[$3])="$ifelse([$3],,CFLAGS,[$3]) -no-gcc"
3100                 AC_TRY_COMPILE([],[
3101 #ifdef __INTEL_COMPILER
3102 #else
3103 make an error
3104 #endif
3105 ],[ifelse([$2],,INTEL_COMPILER,[$2])=yes
3106 cf_save_CFLAGS="$cf_save_CFLAGS -we147"
3107 ],[])
3108                 ifelse([$3],,CFLAGS,[$3])="$cf_save_CFLAGS"
3109                 AC_MSG_RESULT($ifelse([$2],,INTEL_COMPILER,[$2]))
3110                 ;;
3111         esac
3112 fi
3113 ])dnl
3114 dnl ---------------------------------------------------------------------------
3115 dnl CF_ISASCII version: 4 updated: 2012/10/06 17:56:13
3116 dnl ----------
3117 dnl Check if we have either a function or macro for 'isascii()'.
3118 AC_DEFUN([CF_ISASCII],
3119 [
3120 AC_MSG_CHECKING(for isascii)
3121 AC_CACHE_VAL(cf_cv_have_isascii,[
3122         AC_TRY_LINK([#include <ctype.h>],[int x = isascii(' ')],
3123         [cf_cv_have_isascii=yes],
3124         [cf_cv_have_isascii=no])
3125 ])dnl
3126 AC_MSG_RESULT($cf_cv_have_isascii)
3127 test "$cf_cv_have_isascii" = yes && AC_DEFINE(HAVE_ISASCII,1,[Define to 1 if we have isascii()])
3128 ])dnl
3129 dnl ---------------------------------------------------------------------------
3130 dnl CF_LARGEFILE version: 9 updated: 2015/04/18 08:56:57
3131 dnl ------------
3132 dnl Add checks for large file support.
3133 AC_DEFUN([CF_LARGEFILE],[
3134 ifdef([AC_FUNC_FSEEKO],[
3135         AC_SYS_LARGEFILE
3136         if test "$enable_largefile" != no ; then
3137         AC_FUNC_FSEEKO
3138
3139         # Normally we would collect these definitions in the config.h,
3140         # but (like _XOPEN_SOURCE), some environments rely on having these
3141         # defined before any of the system headers are included.  Another
3142         # case comes up with C++, e.g., on AIX the compiler compiles the
3143         # header files by themselves before looking at the body files it is
3144         # told to compile.  For ncurses, those header files do not include
3145         # the config.h
3146         test "$ac_cv_sys_large_files"      != no && CPPFLAGS="$CPPFLAGS -D_LARGE_FILES "
3147         test "$ac_cv_sys_largefile_source" != no && CPPFLAGS="$CPPFLAGS -D_LARGEFILE_SOURCE "
3148         test "$ac_cv_sys_file_offset_bits" != no && CPPFLAGS="$CPPFLAGS -D_FILE_OFFSET_BITS=$ac_cv_sys_file_offset_bits "
3149
3150         AC_CACHE_CHECK(whether to use struct dirent64, cf_cv_struct_dirent64,[
3151                 AC_TRY_COMPILE([
3152 #include <sys/types.h>
3153 #include <dirent.h>
3154                 ],[
3155                 /* if transitional largefile support is setup, this is true */
3156                 extern struct dirent64 * readdir(DIR *);
3157                 struct dirent64 *x = readdir((DIR *)0);
3158                 struct dirent *y = readdir((DIR *)0);
3159                 int z = x - y;
3160                 ],
3161                 [cf_cv_struct_dirent64=yes],
3162                 [cf_cv_struct_dirent64=no])
3163         ])
3164         test "$cf_cv_struct_dirent64" = yes && AC_DEFINE(HAVE_STRUCT_DIRENT64,1,[Define to 1 if we have struct dirent64])
3165         fi
3166 ])
3167 ])
3168 dnl ---------------------------------------------------------------------------
3169 dnl CF_LDFLAGS_STATIC version: 12 updated: 2015/04/18 08:56:57
3170 dnl -----------------
3171 dnl Check for compiler/linker flags used to temporarily force usage of static
3172 dnl libraries.  This depends on the compiler and platform.  Use this to help
3173 dnl ensure that the linker picks up a given library based on its position in
3174 dnl the list of linker options and libraries.
3175 AC_DEFUN([CF_LDFLAGS_STATIC],[
3176
3177 if test "$GCC" = yes ; then
3178         case $cf_cv_system_name in
3179         (OS/2*|os2*|aix[[4]]*|solaris2.1[[0-9]]|darwin*)
3180                 LDFLAGS_STATIC=
3181                 LDFLAGS_SHARED=
3182                 ;;
3183         (*)     # normally, except when broken
3184                 LDFLAGS_STATIC=-static
3185                 LDFLAGS_SHARED=-dynamic
3186                 ;;
3187         esac
3188 else
3189         case $cf_cv_system_name in
3190         (aix[[4-7]]*)   # from ld manpage
3191                 LDFLAGS_STATIC=-bstatic
3192                 LDFLAGS_SHARED=-bdynamic
3193                 ;;
3194         (hpux*)         # from ld manpage for hpux10.20, hpux11.11
3195                 # We could also use just "archive" and "shared".
3196                 LDFLAGS_STATIC=-Wl,-a,archive_shared
3197                 LDFLAGS_SHARED=-Wl,-a,shared_archive
3198                 ;;
3199         (irix*)         # from ld manpage IRIX64
3200                 LDFLAGS_STATIC=-Bstatic
3201                 LDFLAGS_SHARED=-Bdynamic
3202                 ;;
3203         (osf[[45]]*)    # from ld manpage osf4.0d, osf5.1
3204                 # alternative "-oldstyle_liblookup" (not in cc manpage)
3205                 LDFLAGS_STATIC=-noso
3206                 LDFLAGS_SHARED=-so_archive
3207                 ;;
3208         (solaris2*)
3209                 LDFLAGS_STATIC=-Bstatic
3210                 LDFLAGS_SHARED=-Bdynamic
3211                 ;;
3212         esac
3213 fi
3214
3215 if test -n "$LDFLAGS_STATIC" && test -n "$LDFLAGS_SHARED"
3216 then
3217         AC_MSG_CHECKING(if linker supports switching between static/dynamic)
3218
3219         rm -f libconftest.a
3220         cat >conftest.$ac_ext <<EOF
3221 #line __oline__ "configure"
3222 #include <stdio.h>
3223 int cf_ldflags_static(FILE *fp) { return fflush(fp); }
3224 EOF
3225         if AC_TRY_EVAL(ac_compile) ; then
3226                 ( $AR $ARFLAGS libconftest.a conftest.o ) 2>&AC_FD_CC 1>/dev/null
3227                 ( eval $RANLIB libconftest.a ) 2>&AC_FD_CC >/dev/null
3228         fi
3229         rm -f conftest.*
3230
3231         cf_save_LIBS="$LIBS"
3232
3233         LIBS="$LDFLAGS_STATIC -L`pwd` -lconftest $LDFLAGS_DYNAMIC $LIBS"
3234         AC_TRY_LINK([
3235 #line __oline__ "configure"
3236 #include <stdio.h>
3237 int cf_ldflags_static(FILE *fp);
3238 ],[
3239         return cf_ldflags_static(stdin);
3240 ],[
3241         # some linkers simply ignore the -dynamic
3242         case x`file conftest$ac_exeext 2>/dev/null` in
3243         (*static*)
3244                 cf_ldflags_static=no
3245                 ;;
3246         (*)
3247                 cf_ldflags_static=yes
3248                 ;;
3249         esac
3250 ],[cf_ldflags_static=no])
3251
3252         rm -f libconftest.*
3253         LIBS="$cf_save_LIBS"
3254
3255         AC_MSG_RESULT($cf_ldflags_static)
3256
3257         if test $cf_ldflags_static != yes
3258         then
3259                 LDFLAGS_STATIC=
3260                 LDFLAGS_SHARED=
3261         fi
3262 else
3263         LDFLAGS_STATIC=
3264         LDFLAGS_SHARED=
3265 fi
3266
3267 AC_SUBST(LDFLAGS_STATIC)
3268 AC_SUBST(LDFLAGS_SHARED)
3269 ])
3270 dnl ---------------------------------------------------------------------------
3271 dnl CF_LD_RPATH_OPT version: 7 updated: 2016/02/20 18:01:19
3272 dnl ---------------
3273 dnl For the given system and compiler, find the compiler flags to pass to the
3274 dnl loader to use the "rpath" feature.
3275 AC_DEFUN([CF_LD_RPATH_OPT],
3276 [
3277 AC_REQUIRE([CF_CHECK_CACHE])
3278
3279 LD_RPATH_OPT=
3280 AC_MSG_CHECKING(for an rpath option)
3281 case $cf_cv_system_name in
3282 (irix*)
3283         if test "$GCC" = yes; then
3284                 LD_RPATH_OPT="-Wl,-rpath,"
3285         else
3286                 LD_RPATH_OPT="-rpath "
3287         fi
3288         ;;
3289 (linux*|gnu*|k*bsd*-gnu|freebsd*)
3290         LD_RPATH_OPT="-Wl,-rpath,"
3291         ;;
3292 (openbsd[[2-9]].*|mirbsd*)
3293         LD_RPATH_OPT="-Wl,-rpath,"
3294         ;;
3295 (dragonfly*)
3296         LD_RPATH_OPT="-rpath "
3297         ;;
3298 (netbsd*)
3299         LD_RPATH_OPT="-Wl,-rpath,"
3300         ;;
3301 (osf*|mls+*)
3302         LD_RPATH_OPT="-rpath "
3303         ;;
3304 (solaris2*)
3305         LD_RPATH_OPT="-R"
3306         ;;
3307 (*)
3308         ;;
3309 esac
3310 AC_MSG_RESULT($LD_RPATH_OPT)
3311
3312 case "x$LD_RPATH_OPT" in
3313 (x-R*)
3314         AC_MSG_CHECKING(if we need a space after rpath option)
3315         cf_save_LIBS="$LIBS"
3316         CF_ADD_LIBS(${LD_RPATH_OPT}$libdir)
3317         AC_TRY_LINK(, , cf_rpath_space=no, cf_rpath_space=yes)
3318         LIBS="$cf_save_LIBS"
3319         AC_MSG_RESULT($cf_rpath_space)
3320         test "$cf_rpath_space" = yes && LD_RPATH_OPT="$LD_RPATH_OPT "
3321         ;;
3322 esac
3323 ])dnl
3324 dnl ---------------------------------------------------------------------------
3325 dnl CF_LIBRARY_PATH version: 10 updated: 2015/04/15 19:08:48
3326 dnl ---------------
3327 dnl Construct a search-list of directories for a nonstandard library-file
3328 dnl
3329 dnl Parameters
3330 dnl     $1 = the variable to return as result
3331 dnl     $2 = the package name
3332 AC_DEFUN([CF_LIBRARY_PATH],
3333 [
3334 $1=
3335 cf_library_path_list=""
3336 if test -n "${LDFLAGS}${LIBS}" ; then
3337         for cf_library_path in $LDFLAGS $LIBS
3338         do
3339                 case $cf_library_path in
3340                 (-L*)
3341                         cf_library_path=`echo ".$cf_library_path" |sed -e 's/^...//' -e 's,/lib$,,'`
3342                         CF_ADD_SUBDIR_PATH($1,$2,lib,$cf_library_path,NONE)
3343                         cf_library_path_list="$cf_library_path_list [$]$1"
3344                         ;;
3345                 esac
3346         done
3347 fi
3348
3349 CF_SUBDIR_PATH($1,$2,lib)
3350
3351 $1="$cf_library_path_list [$]$1"
3352 ])dnl
3353 dnl ---------------------------------------------------------------------------
3354 dnl CF_LIBTOOL_VERSION version: 1 updated: 2013/04/06 18:03:09
3355 dnl ------------------
3356 AC_DEFUN([CF_LIBTOOL_VERSION],[
3357 if test -n "$LIBTOOL" && test "$LIBTOOL" != none
3358 then
3359         cf_cv_libtool_version=`$LIBTOOL --version 2>&1 | sed -e '/^$/d' |sed -e '2,$d' -e 's/([[^)]]*)//g' -e 's/^[[^1-9]]*//' -e 's/[[^0-9.]].*//'`
3360 else
3361         cf_cv_libtool_version=
3362 fi
3363 test -z "$cf_cv_libtool_version" && unset cf_cv_libtool_version
3364 ])dnl
3365 dnl ---------------------------------------------------------------------------
3366 dnl CF_LIB_PREFIX version: 12 updated: 2015/10/17 19:03:33
3367 dnl -------------
3368 dnl Compute the library-prefix for the given host system
3369 dnl $1 = variable to set
3370 define([CF_LIB_PREFIX],
3371 [
3372         case $cf_cv_system_name in
3373         (OS/2*|os2*)
3374                 if test "$DFT_LWR_MODEL" = libtool; then
3375                         LIB_PREFIX='lib'
3376                 else
3377                         LIB_PREFIX=''
3378                 fi
3379                 ;;
3380         (*)     LIB_PREFIX='lib'
3381                 ;;
3382         esac
3383 ifelse($1,,,[$1=$LIB_PREFIX])
3384         AC_SUBST(LIB_PREFIX)
3385 ])dnl
3386 dnl ---------------------------------------------------------------------------
3387 dnl CF_LIB_RULES version: 86 updated: 2015/11/07 20:01:34
3388 dnl ------------
3389 dnl Append definitions and rules for the given models to the subdirectory
3390 dnl Makefiles, and the recursion rule for the top-level Makefile.  If the
3391 dnl subdirectory is a library-source directory, modify the Libs_To_Make list in
3392 dnl the corresponding makefile to list the models that we'll generate.
3393 dnl
3394 dnl For shared libraries, make a list of symbolic links to construct when
3395 dnl generating each library.  The convention used for Linux is the simplest
3396 dnl one:
3397 dnl     lib<name>.so    ->
3398 dnl     lib<name>.so.<major>    ->
3399 dnl     lib<name>.so.<maj>.<minor>
3400 dnl
3401 dnl Note: Libs_To_Make is mixed case, since it is not a pure autoconf variable.
3402 AC_DEFUN([CF_LIB_RULES],
3403 [
3404 cf_prefix=$LIB_PREFIX
3405 AC_REQUIRE([CF_SUBST_NCURSES_VERSION])
3406
3407 case $cf_cv_shlib_version in
3408 (cygdll|msysdll|mingw)
3409         TINFO_NAME=$TINFO_ARG_SUFFIX
3410         TINFO_SUFFIX=.dll
3411         ;;
3412 esac
3413
3414 if test -n "$TINFO_SUFFIX" ; then
3415         case $TINFO_SUFFIX in
3416         (tw*)
3417                 TINFO_NAME="${TINFO_NAME}tw${EXTRA_SUFFIX}"
3418                 TINFO_SUFFIX=`echo $TINFO_SUFFIX | sed 's/^tw'$EXTRA_SUFFIX'//'`
3419                 ;;
3420         (t*)
3421                 TINFO_NAME="${TINFO_NAME}t${EXTRA_SUFFIX}"
3422                 TINFO_SUFFIX=`echo $TINFO_SUFFIX | sed 's/^t'$EXTRA_SUFFIX'//'`
3423                 ;;
3424         (w*)
3425                 TINFO_NAME="${TINFO_NAME}w${EXTRA_SUFFIX}"
3426                 TINFO_SUFFIX=`echo $TINFO_SUFFIX | sed 's/^w'$EXTRA_SUFFIX'//'`
3427                 ;;
3428         esac
3429 fi
3430
3431 for cf_dir in $SRC_SUBDIRS
3432 do
3433         if test ! -d $srcdir/$cf_dir ; then
3434                 continue
3435         elif test -f $srcdir/$cf_dir/modules; then
3436
3437                 SHARED_LIB=
3438                 Libs_To_Make=
3439                 cf_awk_program=
3440                 if test -n "${cf_cv_abi_version}" && test "x${cf_cv_abi_version}" != "x5"
3441                 then
3442                         cf_awk_program="$cf_awk_program\
3443 /deprecated in ABI${cf_cv_abi_version}/ { next; }\
3444 { sub(\"NCURSES([[WT]]+)?\", \"&${cf_cv_abi_version}\"); }\
3445 "
3446                 fi
3447
3448                 if test "x$WILDCARD_SYMS" = xno
3449                 then
3450                         cf_awk_program="$cf_awk_program\
3451 /[[     ]]_\\*;/ { skip=1; next; }\
3452 "
3453                 fi
3454
3455                 if test "x$cf_awk_program" != "x"
3456                 then
3457                         cat >>$cf_dir/Makefile <<CF_EOF
3458
3459 # Generated by CF_LIB_RULES
3460 resulting.map: $UNALTERED_SYMS
3461         $AWK 'BEGIN { skip = 1; last=""; } \
3462 $cf_awk_program \
3463 { if ( last != "" && ( skip == 0 || \[$]\[$]0 !~ /}/ ) ) { print last; }\
3464  skip = 0; last = \[$]\[$]0; } \
3465 END { print last; }' < $UNALTERED_SYMS >\[$]@
3466
3467 distclean::
3468         rm -f resulting.map
3469 CF_EOF
3470                 fi
3471
3472                 for cf_item in $cf_LIST_MODELS
3473                 do
3474                         CF_LIB_SUFFIX($cf_item,cf_suffix,cf_depsuf)
3475                         cf_libname=$cf_dir
3476                         test "$cf_dir" = c++ && cf_libname=ncurses++
3477                         if test $cf_item = shared ; then
3478                                 if test -n "${LIB_SUFFIX}"
3479                                 then
3480                                         cf_shared_suffix=`echo "$cf_suffix" | sed 's/^'"${USE_LIB_SUFFIX}"'//'`
3481                                 else
3482                                         cf_shared_suffix="$cf_suffix"
3483                                 fi
3484                                 if test "$cf_cv_do_symlinks" = yes ; then
3485                                         cf_version_name=
3486
3487                                         case "$cf_cv_shlib_version" in
3488                                         (rel)
3489                                                 cf_version_name=REL_VERSION
3490                                                 ;;
3491                                         (abi)
3492                                                 cf_version_name=ABI_VERSION
3493                                                 ;;
3494                                         esac
3495
3496                                         if test -n "$cf_version_name"
3497                                         then
3498                                                 case "$cf_cv_system_name" in
3499                                                 (darwin*)
3500                                                         # "w", etc?
3501                                                         cf_suffix="${USE_LIB_SUFFIX}"'.${'$cf_version_name'}'"$cf_shared_suffix"
3502                                                         ;;
3503                                                 (*)
3504                                                         cf_suffix="$cf_suffix"'.${'$cf_version_name'}'
3505                                                         ;;
3506                                                 esac
3507                                         fi
3508                                         if test -n "${USE_LIB_SUFFIX}"
3509                                         then
3510                                                 cf_shared_suffix=`echo "$cf_suffix" | sed 's/^'"${USE_LIB_SUFFIX}"'//'`
3511                                         else
3512                                                 cf_shared_suffix="$cf_suffix"
3513                                         fi
3514                                 fi
3515                                 # cygwin needs import library, and has unique naming convention
3516                                 # use autodetected ${cf_prefix} for import lib and static lib, but
3517                                 # use 'cyg' prefix for shared lib.
3518                                 case $cf_cv_shlib_version in
3519                                 (cygdll)
3520                                         cf_cygsuf=`echo "$cf_suffix" | sed -e 's/\.dll/\${ABI_VERSION}.dll/'`
3521                                         cf_add_lib="../lib/cyg${cf_libname}${cf_cygsuf}"
3522                                         ;;
3523                                 (msysdll)
3524                                         cf_cygsuf=`echo "$cf_suffix" | sed -e 's/\.dll/\${ABI_VERSION}.dll/'`
3525                                         cf_add_lib="../lib/msys-${cf_libname}${cf_cygsuf}"
3526                                         ;;
3527                                 (mingw)
3528                                         cf_cygsuf=`echo "$cf_suffix" | sed -e 's/\.dll/\${ABI_VERSION}.dll/'`
3529                                         cf_add_lib="../lib/lib${cf_libname}${cf_cygsuf}"
3530                                         ;;
3531                                 (*)
3532                                         cf_add_lib=
3533                                         ;;
3534                                 esac
3535                                 if test -n "$cf_add_lib"
3536                                 then
3537                                         Libs_To_Make="$Libs_To_Make $cf_add_lib"
3538                                         continue
3539                                 fi
3540                         fi
3541                         cf_add_lib="../lib/${cf_prefix}${cf_libname}${cf_suffix}"
3542                         Libs_To_Make="$Libs_To_Make $cf_add_lib"
3543                 done
3544
3545                 if test $cf_dir = ncurses ; then
3546                         cf_subsets="$LIB_SUBSETS"
3547                         cf_r_parts="$cf_subsets"
3548                         cf_liblist="$Libs_To_Make"
3549
3550                         while test -n "$cf_r_parts"
3551                         do
3552                                 cf_l_parts=`echo "$cf_r_parts" |sed -e 's/ .*$//'`
3553                                 cf_r_parts=`echo "$cf_r_parts" |sed -e 's/^[[^ ]]* //'`
3554                                 if test "$cf_l_parts" != "$cf_r_parts" ; then
3555                                         cf_add_lib=
3556                                         case $cf_l_parts in
3557                                         (*termlib*)
3558                                                 cf_add_lib=`echo $cf_liblist |sed -e s%${LIB_NAME}${USE_LIB_SUFFIX}%${TINFO_LIB_SUFFIX}%g`
3559                                                 ;;
3560                                         (*ticlib*)
3561                                                 cf_add_lib=`echo $cf_liblist |sed -e s%${LIB_NAME}${USE_LIB_SUFFIX}%${TICS_LIB_SUFFIX}%g`
3562                                                 ;;
3563                                         (*)
3564                                                 break
3565                                                 ;;
3566                                         esac
3567                                         if test -n "$cf_add_lib"; then
3568                                                 Libs_To_Make="$cf_add_lib $Libs_To_Make"
3569                                         fi
3570                                 else
3571                                         break
3572                                 fi
3573                         done
3574                 else
3575                         cf_subsets=`echo "$LIB_SUBSETS" | sed -e 's/^termlib.* //'`
3576                 fi
3577
3578                 if test $cf_dir = c++; then
3579                         if test "x$with_shared_cxx" != xyes && test -n "$cf_shared_suffix"; then
3580                                 cf_list=
3581                                 for cf_item in $Libs_To_Make
3582                                 do
3583                                         case $cf_item in
3584                                         (*.a)
3585                                                 ;;
3586                                         (*)
3587                                                 cf_item=`echo "$cf_item" | sed -e "s,"$cf_shared_suffix",.a,"`
3588                                                 ;;
3589                                         esac
3590                                         for cf_test in $cf_list
3591                                         do
3592                                                 if test "$cf_test" = "$cf_item"
3593                                                 then
3594                                                         cf_LIST_MODELS=`echo "$cf_LIST_MODELS" | sed -e 's/normal//'`
3595                                                         cf_item=
3596                                                         break
3597                                                 fi
3598                                         done
3599                                         test -n "$cf_item" && cf_list="$cf_list $cf_item"
3600                                 done
3601                                 Libs_To_Make="$cf_list"
3602                         fi
3603                 fi
3604
3605                 sed -e "s%@Libs_To_Make@%$Libs_To_Make%" \
3606                     -e "s%@SHARED_LIB@%$SHARED_LIB%" \
3607                         $cf_dir/Makefile >$cf_dir/Makefile.out
3608                 mv $cf_dir/Makefile.out $cf_dir/Makefile
3609
3610                 $AWK -f $srcdir/mk-0th.awk \
3611                         libname="${cf_dir}${LIB_SUFFIX}" subsets="$LIB_SUBSETS" ticlib="$TICS_LIB_SUFFIX" termlib="$TINFO_LIB_SUFFIX" \
3612                         $srcdir/$cf_dir/modules >>$cf_dir/Makefile
3613
3614                 for cf_subset in $cf_subsets
3615                 do
3616                         cf_subdirs=
3617                         for cf_item in $cf_LIST_MODELS
3618                         do
3619
3620                         echo "Appending rules for ${cf_item} model (${cf_dir}: ${cf_subset})"
3621                         CF_UPPER(cf_ITEM,$cf_item)
3622
3623                         CXX_MODEL=$cf_ITEM
3624                         if test "$CXX_MODEL" = SHARED; then
3625                                 case $cf_cv_shlib_version in
3626                                 (cygdll|msysdll|mingw)
3627                                         test "x$with_shared_cxx" = xno && CF_VERBOSE(overriding CXX_MODEL to SHARED)
3628                                         with_shared_cxx=yes
3629                                         ;;
3630                                 (*)
3631                                         test "x$with_shared_cxx" = xno && CXX_MODEL=NORMAL
3632                                         ;;
3633                                 esac
3634                         fi
3635
3636                         CF_LIB_SUFFIX($cf_item,cf_suffix,cf_depsuf)
3637                         CF_OBJ_SUBDIR($cf_item,cf_subdir)
3638
3639                         # Test for case where we build libtinfo with a different name.
3640                         cf_libname=$cf_dir
3641                         if test $cf_dir = ncurses ; then
3642                                 case $cf_subset in
3643                                 (*base*)
3644                                         cf_libname=${cf_libname}$USE_LIB_SUFFIX
3645                                         ;;
3646                                 (*termlib*)
3647                                         cf_libname=$TINFO_LIB_SUFFIX
3648                                         ;;
3649                                 (ticlib*)
3650                                         cf_libname=$TICS_LIB_SUFFIX
3651                                         ;;
3652                                 esac
3653                         elif test $cf_dir = c++ ; then
3654                                 cf_libname=ncurses++$USE_LIB_SUFFIX
3655                         else
3656                                 cf_libname=${cf_libname}$USE_LIB_SUFFIX
3657                         fi
3658                         if test -n "${USE_ARG_SUFFIX}" ; then
3659                                 # undo $USE_LIB_SUFFIX add-on in CF_LIB_SUFFIX
3660                                 cf_suffix=`echo $cf_suffix |sed -e "s%^${USE_LIB_SUFFIX}%%"`
3661                         fi
3662
3663                         # These dependencies really are for development, not
3664                         # builds, but they are useful in porting, too.
3665                         cf_depend="../include/ncurses_cfg.h"
3666                         if test "$srcdir" = "."; then
3667                                 cf_reldir="."
3668                         else
3669                                 cf_reldir="\${srcdir}"
3670                         fi
3671
3672                         if test -f $srcdir/$cf_dir/$cf_dir.priv.h; then
3673                                 cf_depend="$cf_depend $cf_reldir/$cf_dir.priv.h"
3674                         elif test -f $srcdir/$cf_dir/curses.priv.h; then
3675                                 cf_depend="$cf_depend $cf_reldir/curses.priv.h"
3676                         fi
3677
3678                         cf_dir_suffix=
3679                         old_cf_suffix="$cf_suffix"
3680                         if test "$cf_cv_shlib_version_infix" = yes ; then
3681                         if test -n "$USE_LIB_SUFFIX" ; then
3682                                 case $USE_LIB_SUFFIX in
3683                                 (tw*)
3684                                         cf_libname=`echo $cf_libname | sed 's/tw'$EXTRA_SUFFIX'$//'`
3685                                         cf_suffix=`echo $cf_suffix | sed 's/^tw'$EXTRA_SUFFIX'//'`
3686                                         cf_dir_suffix=tw$EXTRA_SUFFIX
3687                                         ;;
3688                                 (t*)
3689                                         cf_libname=`echo $cf_libname | sed 's/t'$EXTRA_SUFFIX'$//'`
3690                                         cf_suffix=`echo $cf_suffix | sed 's/^t'$EXTRA_SUFFIX'//'`