ncurses 6.2 - patch 20201128
[ncurses.git] / aclocal.m4
1 dnl***************************************************************************
2 dnl Copyright 2018-2019,2020 Thomas E. Dickey                                *
3 dnl Copyright 1998-2017,2018 Free Software Foundation, Inc.                  *
4 dnl                                                                          *
5 dnl Permission is hereby granted, free of charge, to any person obtaining a  *
6 dnl copy of this software and associated documentation files (the            *
7 dnl "Software"), to deal in the Software without restriction, including      *
8 dnl without limitation the rights to use, copy, modify, merge, publish,      *
9 dnl distribute, distribute with modifications, sublicense, and/or sell       *
10 dnl copies of the Software, and to permit persons to whom the Software is    *
11 dnl furnished to do so, subject to the following conditions:                 *
12 dnl                                                                          *
13 dnl The above copyright notice and this permission notice shall be included  *
14 dnl in all copies or substantial portions of the Software.                   *
15 dnl                                                                          *
16 dnl THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS  *
17 dnl OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF               *
18 dnl MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.   *
19 dnl IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,   *
20 dnl DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR    *
21 dnl OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR    *
22 dnl THE USE OR OTHER DEALINGS IN THE SOFTWARE.                               *
23 dnl                                                                          *
24 dnl Except as contained in this notice, the name(s) of the above copyright   *
25 dnl holders shall not be used in advertising or otherwise to promote the     *
26 dnl sale, use or other dealings in this Software without prior written       *
27 dnl authorization.                                                           *
28 dnl***************************************************************************
29 dnl
30 dnl Author: Thomas E. Dickey 1995-on
31 dnl
32 dnl $Id: aclocal.m4,v 1.941 2020/11/26 22:37:55 tom Exp $
33 dnl Macros used in NCURSES auto-configuration script.
34 dnl
35 dnl These macros are maintained separately from NCURSES.  The copyright on
36 dnl this file applies to the aggregation of macros and does not affect use of
37 dnl these macros in other applications.
38 dnl
39 dnl See these pages for additional information:
40 dnl             https://invisible-island.net/autoconf/
41 dnl             https://invisible-island.net/autoconf/my-autoconf.html
42 dnl
43 dnl ---------------------------------------------------------------------------
44 dnl ---------------------------------------------------------------------------
45 dnl AM_LANGINFO_CODESET version: 5 updated: 2020/03/10 18:53:47
46 dnl -------------------
47 dnl Inserted as requested by gettext 0.10.40
48 dnl File from /usr/share/aclocal
49 dnl codeset.m4
50 dnl ====================
51 dnl serial AM1
52 dnl
53 dnl From Bruno Haible.
54 AC_DEFUN([AM_LANGINFO_CODESET],
55 [
56 AC_CACHE_CHECK([for nl_langinfo and CODESET], am_cv_langinfo_codeset,
57         [AC_TRY_LINK([#include <langinfo.h>],
58         [char* cs = nl_langinfo(CODESET); (void)cs],
59         am_cv_langinfo_codeset=yes,
60         am_cv_langinfo_codeset=no)
61         ])
62         if test $am_cv_langinfo_codeset = yes; then
63                 AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
64                 [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
65         fi
66 ])dnl
67 dnl ---------------------------------------------------------------------------
68 dnl CF_ABI_DEFAULTS version: 2 updated: 2015/06/06 13:49:58
69 dnl ---------------
70 dnl Provide configure-script defaults for different ncurses ABIs.
71 AC_DEFUN([CF_ABI_DEFAULTS],[
72 AC_REQUIRE([CF_NCURSES_WITH_ABI_VERSION])
73 case x$cf_cv_abi_version in
74 (x[[6789]])
75         cf_dft_ext_colors=yes
76         cf_dft_ext_const=yes
77         cf_dft_ext_mouse=yes
78         cf_dft_ext_putwin=yes
79         cf_dft_ext_spfuncs=yes
80         cf_dft_filter_syms=yes
81         cf_dft_chtype=uint32_t
82         cf_dft_mmask_t=uint32_t
83         cf_dft_interop=yes
84         cf_dft_tparm_arg=intptr_t
85         cf_dft_with_lp64=yes
86         ;;
87 (*)
88         cf_dft_ext_colors=no
89         cf_dft_ext_const=no
90         cf_dft_ext_mouse=no
91         cf_dft_ext_putwin=no
92         cf_dft_ext_spfuncs=no
93         cf_dft_filter_syms=no
94         cf_dft_chtype=auto
95         cf_dft_mmask_t=auto
96         cf_dft_interop=no
97         cf_dft_tparm_arg=long
98         cf_dft_with_lp64=no
99         ;;
100 esac
101 ])dnl
102 dnl ---------------------------------------------------------------------------
103 dnl CF_ACVERSION_CHECK version: 5 updated: 2014/06/04 19:11:49
104 dnl ------------------
105 dnl Conditionally generate script according to whether we're using a given autoconf.
106 dnl
107 dnl $1 = version to compare against
108 dnl $2 = code to use if AC_ACVERSION is at least as high as $1.
109 dnl $3 = code to use if AC_ACVERSION is older than $1.
110 define([CF_ACVERSION_CHECK],
111 [
112 ifdef([AC_ACVERSION], ,[ifdef([AC_AUTOCONF_VERSION],[m4_copy([AC_AUTOCONF_VERSION],[AC_ACVERSION])],[m4_copy([m4_PACKAGE_VERSION],[AC_ACVERSION])])])dnl
113 ifdef([m4_version_compare],
114 [m4_if(m4_version_compare(m4_defn([AC_ACVERSION]), [$1]), -1, [$3], [$2])],
115 [CF_ACVERSION_COMPARE(
116 AC_PREREQ_CANON(AC_PREREQ_SPLIT([$1])),
117 AC_PREREQ_CANON(AC_PREREQ_SPLIT(AC_ACVERSION)), AC_ACVERSION, [$2], [$3])])])dnl
118 dnl ---------------------------------------------------------------------------
119 dnl CF_ACVERSION_COMPARE version: 3 updated: 2012/10/03 18:39:53
120 dnl --------------------
121 dnl CF_ACVERSION_COMPARE(MAJOR1, MINOR1, TERNARY1,
122 dnl                      MAJOR2, MINOR2, TERNARY2,
123 dnl                      PRINTABLE2, not FOUND, FOUND)
124 define([CF_ACVERSION_COMPARE],
125 [ifelse(builtin([eval], [$2 < $5]), 1,
126 [ifelse([$8], , ,[$8])],
127 [ifelse([$9], , ,[$9])])])dnl
128 dnl ---------------------------------------------------------------------------
129 dnl CF_ADA_INCLUDE_DIRS version: 8 updated: 2013/10/14 04:24:07
130 dnl -------------------
131 dnl Construct the list of include-options for the C programs in the Ada95
132 dnl binding.
133 AC_DEFUN([CF_ADA_INCLUDE_DIRS],
134 [
135 ACPPFLAGS="-I. -I../include -I../../include $ACPPFLAGS"
136 if test "$srcdir" != "."; then
137         ACPPFLAGS="-I\${srcdir}/../../include $ACPPFLAGS"
138 fi
139 if test "$GCC" != yes; then
140         ACPPFLAGS="$ACPPFLAGS -I\${includedir}"
141 elif test "$includedir" != "/usr/include"; then
142         if test "$includedir" = '${prefix}/include' ; then
143                 if test x$prefix != x/usr ; then
144                         ACPPFLAGS="$ACPPFLAGS -I\${includedir}"
145                 fi
146         else
147                 ACPPFLAGS="$ACPPFLAGS -I\${includedir}"
148         fi
149 fi
150 AC_SUBST(ACPPFLAGS)
151 ])dnl
152 dnl ---------------------------------------------------------------------------
153 dnl CF_ADD_ADAFLAGS version: 1 updated: 2010/06/19 15:22:18
154 dnl ---------------
155 dnl Add to $ADAFLAGS, which is substituted into makefile and scripts.
156 AC_DEFUN([CF_ADD_ADAFLAGS],[
157         ADAFLAGS="$ADAFLAGS $1"
158         AC_SUBST(ADAFLAGS)
159 ])dnl
160 dnl ---------------------------------------------------------------------------
161 dnl CF_ADD_CFLAGS version: 14 updated: 2020/04/04 16:16:13
162 dnl -------------
163 dnl Copy non-preprocessor flags to $CFLAGS, preprocessor flags to $CPPFLAGS
164 dnl $1 = flags to add
165 dnl $2 = if given makes this macro verbose.
166 dnl
167 dnl Put any preprocessor definitions that use quoted strings in $EXTRA_CPPFLAGS,
168 dnl to simplify use of $CPPFLAGS in compiler checks, etc., that are easily
169 dnl confused by the quotes (which require backslashes to keep them usable).
170 AC_DEFUN([CF_ADD_CFLAGS],
171 [
172 cf_fix_cppflags=no
173 cf_new_cflags=
174 cf_new_cppflags=
175 cf_new_extra_cppflags=
176
177 for cf_add_cflags in $1
178 do
179 case $cf_fix_cppflags in
180 (no)
181         case $cf_add_cflags in
182         (-undef|-nostdinc*|-I*|-D*|-U*|-E|-P|-C)
183                 case $cf_add_cflags in
184                 (-D*)
185                         cf_tst_cflags=`echo ${cf_add_cflags} |sed -e 's/^-D[[^=]]*='\''\"[[^"]]*//'`
186
187                         test "x${cf_add_cflags}" != "x${cf_tst_cflags}" \
188                                 && test -z "${cf_tst_cflags}" \
189                                 && cf_fix_cppflags=yes
190
191                         if test $cf_fix_cppflags = yes ; then
192                                 CF_APPEND_TEXT(cf_new_extra_cppflags,$cf_add_cflags)
193                                 continue
194                         elif test "${cf_tst_cflags}" = "\"'" ; then
195                                 CF_APPEND_TEXT(cf_new_extra_cppflags,$cf_add_cflags)
196                                 continue
197                         fi
198                         ;;
199                 esac
200                 case "$CPPFLAGS" in
201                 (*$cf_add_cflags)
202                         ;;
203                 (*)
204                         case $cf_add_cflags in
205                         (-D*)
206                                 cf_tst_cppflags=`echo "x$cf_add_cflags" | sed -e 's/^...//' -e 's/=.*//'`
207                                 CF_REMOVE_DEFINE(CPPFLAGS,$CPPFLAGS,$cf_tst_cppflags)
208                                 ;;
209                         esac
210                         CF_APPEND_TEXT(cf_new_cppflags,$cf_add_cflags)
211                         ;;
212                 esac
213                 ;;
214         (*)
215                 CF_APPEND_TEXT(cf_new_cflags,$cf_add_cflags)
216                 ;;
217         esac
218         ;;
219 (yes)
220         CF_APPEND_TEXT(cf_new_extra_cppflags,$cf_add_cflags)
221
222         cf_tst_cflags=`echo ${cf_add_cflags} |sed -e 's/^[[^"]]*"'\''//'`
223
224         test "x${cf_add_cflags}" != "x${cf_tst_cflags}" \
225                 && test -z "${cf_tst_cflags}" \
226                 && cf_fix_cppflags=no
227         ;;
228 esac
229 done
230
231 if test -n "$cf_new_cflags" ; then
232         ifelse([$2],,,[CF_VERBOSE(add to \$CFLAGS $cf_new_cflags)])
233         CF_APPEND_TEXT(CFLAGS,$cf_new_cflags)
234 fi
235
236 if test -n "$cf_new_cppflags" ; then
237         ifelse([$2],,,[CF_VERBOSE(add to \$CPPFLAGS $cf_new_cppflags)])
238         CF_APPEND_TEXT(CPPFLAGS,$cf_new_cppflags)
239 fi
240
241 if test -n "$cf_new_extra_cppflags" ; then
242         ifelse([$2],,,[CF_VERBOSE(add to \$EXTRA_CPPFLAGS $cf_new_extra_cppflags)])
243         CF_APPEND_TEXT(EXTRA_CPPFLAGS,$cf_new_extra_cppflags)
244 fi
245
246 AC_SUBST(EXTRA_CPPFLAGS)
247
248 ])dnl
249 dnl ---------------------------------------------------------------------------
250 dnl CF_ADD_CXXFLAGS version: 1 updated: 2020/04/04 16:16:13
251 dnl ---------------
252 dnl Copy non-preprocessor flags to $CXXFLAGS, preprocessor flags to $CPPFLAGS
253 dnl The second parameter if given makes this macro verbose.
254 dnl
255 dnl Put any preprocessor definitions that use quoted strings in $EXTRA_CPPFLAGS,
256 dnl to simplify use of $CPPFLAGS in compiler checks, etc., that are easily
257 dnl confused by the quotes (which require backslashes to keep them usable).
258 AC_DEFUN([CF_ADD_CXXFLAGS],
259 [
260 cf_save_CXXFLAGS="$CFLAGS"
261 CFLAGS="$CXXFLAGS"
262 CF_ADD_CFLAGS($1 ifelse($2,,,[,$2]))
263 CXXFLAGS="$CFLAGS"
264 CFLAGS="$cf_save_CXXFLAGS"
265 ])dnl
266 dnl ---------------------------------------------------------------------------
267 dnl CF_ADD_INCDIR version: 15 updated: 2018/06/20 20:23:13
268 dnl -------------
269 dnl Add an include-directory to $CPPFLAGS.  Don't add /usr/include, since it's
270 dnl redundant.  We don't normally need to add -I/usr/local/include for gcc,
271 dnl but old versions (and some misinstalled ones) need that.  To make things
272 dnl worse, gcc 3.x may give error messages if -I/usr/local/include is added to
273 dnl the include-path).
274 AC_DEFUN([CF_ADD_INCDIR],
275 [
276 if test -n "$1" ; then
277   for cf_add_incdir in $1
278   do
279         while test $cf_add_incdir != /usr/include
280         do
281           if test -d $cf_add_incdir
282           then
283                 cf_have_incdir=no
284                 if test -n "$CFLAGS$CPPFLAGS" ; then
285                   # a loop is needed to ensure we can add subdirs of existing dirs
286                   for cf_test_incdir in $CFLAGS $CPPFLAGS ; do
287                         if test ".$cf_test_incdir" = ".-I$cf_add_incdir" ; then
288                           cf_have_incdir=yes; break
289                         fi
290                   done
291                 fi
292
293                 if test "$cf_have_incdir" = no ; then
294                   if test "$cf_add_incdir" = /usr/local/include ; then
295                         if test "$GCC" = yes
296                         then
297                           cf_save_CPPFLAGS=$CPPFLAGS
298                           CF_APPEND_TEXT(CPPFLAGS,-I$cf_add_incdir)
299                           AC_TRY_COMPILE([#include <stdio.h>],
300                                   [printf("Hello")],
301                                   [],
302                                   [cf_have_incdir=yes])
303                           CPPFLAGS=$cf_save_CPPFLAGS
304                         fi
305                   fi
306                 fi
307
308                 if test "$cf_have_incdir" = no ; then
309                   CF_VERBOSE(adding $cf_add_incdir to include-path)
310                   ifelse([$2],,CPPFLAGS,[$2])="$ifelse([$2],,CPPFLAGS,[$2]) -I$cf_add_incdir"
311
312                   cf_top_incdir=`echo $cf_add_incdir | sed -e 's%/include/.*$%/include%'`
313                   test "$cf_top_incdir" = "$cf_add_incdir" && break
314                   cf_add_incdir="$cf_top_incdir"
315                 else
316                   break
317                 fi
318           else
319                 break
320           fi
321         done
322   done
323 fi
324 ])dnl
325 dnl ---------------------------------------------------------------------------
326 dnl CF_ADD_LIB version: 2 updated: 2010/06/02 05:03:05
327 dnl ----------
328 dnl Add a library, used to enforce consistency.
329 dnl
330 dnl $1 = library to add, without the "-l"
331 dnl $2 = variable to update (default $LIBS)
332 AC_DEFUN([CF_ADD_LIB],[CF_ADD_LIBS(-l$1,ifelse($2,,LIBS,[$2]))])dnl
333 dnl ---------------------------------------------------------------------------
334 dnl CF_ADD_LIBDIR version: 10 updated: 2015/04/18 08:56:57
335 dnl -------------
336 dnl     Adds to the library-path
337 dnl
338 dnl     Some machines have trouble with multiple -L options.
339 dnl
340 dnl $1 is the (list of) directory(s) to add
341 dnl $2 is the optional name of the variable to update (default LDFLAGS)
342 dnl
343 AC_DEFUN([CF_ADD_LIBDIR],
344 [
345 if test -n "$1" ; then
346         for cf_add_libdir in $1
347         do
348                 if test $cf_add_libdir = /usr/lib ; then
349                         :
350                 elif test -d $cf_add_libdir
351                 then
352                         cf_have_libdir=no
353                         if test -n "$LDFLAGS$LIBS" ; then
354                                 # a loop is needed to ensure we can add subdirs of existing dirs
355                                 for cf_test_libdir in $LDFLAGS $LIBS ; do
356                                         if test ".$cf_test_libdir" = ".-L$cf_add_libdir" ; then
357                                                 cf_have_libdir=yes; break
358                                         fi
359                                 done
360                         fi
361                         if test "$cf_have_libdir" = no ; then
362                                 CF_VERBOSE(adding $cf_add_libdir to library-path)
363                                 ifelse([$2],,LDFLAGS,[$2])="-L$cf_add_libdir $ifelse([$2],,LDFLAGS,[$2])"
364                         fi
365                 fi
366         done
367 fi
368 ])dnl
369 dnl ---------------------------------------------------------------------------
370 dnl CF_ADD_LIBS version: 3 updated: 2019/11/02 16:47:33
371 dnl -----------
372 dnl Add one or more libraries, used to enforce consistency.  Libraries are
373 dnl prepended to an existing list, since their dependencies are assumed to
374 dnl already exist in the list.
375 dnl
376 dnl $1 = libraries to add, with the "-l", etc.
377 dnl $2 = variable to update (default $LIBS)
378 AC_DEFUN([CF_ADD_LIBS],[
379 cf_add_libs="[$]ifelse($2,,LIBS,[$2])"
380 # reverse order
381 cf_add_0lib=
382 for cf_add_1lib in $1; do cf_add_0lib="$cf_add_1lib $cf_add_0lib"; done
383 # filter duplicates
384 for cf_add_1lib in $cf_add_0lib; do
385         for cf_add_2lib in $cf_add_libs; do
386                 if test "x$cf_add_1lib" = "x$cf_add_2lib"; then
387                         cf_add_1lib=
388                         break
389                 fi
390         done
391         test -n "$cf_add_1lib" && cf_add_libs="$cf_add_1lib $cf_add_libs"
392 done
393 ifelse($2,,LIBS,[$2])="$cf_add_libs"
394 ])dnl
395 dnl ---------------------------------------------------------------------------
396 dnl CF_ADD_SUBDIR_PATH version: 4 updated: 2013/10/08 17:47:05
397 dnl ------------------
398 dnl Append to a search-list for a nonstandard header/lib-file
399 dnl     $1 = the variable to return as result
400 dnl     $2 = the package name
401 dnl     $3 = the subdirectory, e.g., bin, include or lib
402 dnl $4 = the directory under which we will test for subdirectories
403 dnl $5 = a directory that we do not want $4 to match
404 AC_DEFUN([CF_ADD_SUBDIR_PATH],
405 [
406 test "x$4" != "x$5" && \
407 test -d "$4" && \
408 ifelse([$5],NONE,,[(test -z "$5" || test x$5 = xNONE || test "x$4" != "x$5") &&]) {
409         test -n "$verbose" && echo "    ... testing for $3-directories under $4"
410         test -d $4/$3 &&          $1="[$]$1 $4/$3"
411         test -d $4/$3/$2 &&       $1="[$]$1 $4/$3/$2"
412         test -d $4/$3/$2/$3 &&    $1="[$]$1 $4/$3/$2/$3"
413         test -d $4/$2/$3 &&       $1="[$]$1 $4/$2/$3"
414         test -d $4/$2/$3/$2 &&    $1="[$]$1 $4/$2/$3/$2"
415 }
416 ])dnl
417 dnl ---------------------------------------------------------------------------
418 dnl CF_APPEND_TEXT version: 1 updated: 2017/02/25 18:58:55
419 dnl --------------
420 dnl use this macro for appending text without introducing an extra blank at
421 dnl the beginning
422 define([CF_APPEND_TEXT],
423 [
424         test -n "[$]$1" && $1="[$]$1 "
425         $1="[$]{$1}$2"
426 ])dnl
427 dnl ---------------------------------------------------------------------------
428 dnl CF_ARG_DISABLE version: 3 updated: 1999/03/30 17:24:31
429 dnl --------------
430 dnl Allow user to disable a normally-on option.
431 AC_DEFUN([CF_ARG_DISABLE],
432 [CF_ARG_OPTION($1,[$2],[$3],[$4],yes)])dnl
433 dnl ---------------------------------------------------------------------------
434 dnl CF_ARG_ENABLE version: 3 updated: 1999/03/30 17:24:31
435 dnl -------------
436 dnl Allow user to enable a normally-off option.
437 AC_DEFUN([CF_ARG_ENABLE],
438 [CF_ARG_OPTION($1,[$2],[$3],[$4],no)])dnl
439 dnl ---------------------------------------------------------------------------
440 dnl CF_ARG_OPTION version: 5 updated: 2015/05/10 19:52:14
441 dnl -------------
442 dnl Restricted form of AC_ARG_ENABLE that ensures user doesn't give bogus
443 dnl values.
444 dnl
445 dnl Parameters:
446 dnl $1 = option name
447 dnl $2 = help-string
448 dnl $3 = action to perform if option is not default
449 dnl $4 = action if perform if option is default
450 dnl $5 = default option value (either 'yes' or 'no')
451 AC_DEFUN([CF_ARG_OPTION],
452 [AC_ARG_ENABLE([$1],[$2],[test "$enableval" != ifelse([$5],no,yes,no) && enableval=ifelse([$5],no,no,yes)
453         if test "$enableval" != "$5" ; then
454 ifelse([$3],,[    :]dnl
455 ,[    $3]) ifelse([$4],,,[
456         else
457                 $4])
458         fi],[enableval=$5 ifelse([$4],,,[
459         $4
460 ])dnl
461 ])])dnl
462 dnl ---------------------------------------------------------------------------
463 dnl CF_AR_FLAGS version: 7 updated: 2020/04/04 11:37:29
464 dnl -----------
465 dnl Check for suitable "ar" (archiver) options for updating an archive.
466 dnl
467 dnl In particular, handle some obsolete cases where the "-" might be omitted,
468 dnl as well as a workaround for breakage of make's archive rules by the GNU
469 dnl binutils "ar" program.
470 AC_DEFUN([CF_AR_FLAGS],[
471 AC_REQUIRE([CF_PROG_AR])
472
473 AC_CACHE_CHECK(for options to update archives, cf_cv_ar_flags,[
474         case $cf_cv_system_name in
475         (*-msvc*)
476                 cf_cv_ar_flags=''
477                 cat >mk_static_lib.sh <<-EOF
478                 #!$SHELL
479                 MSVC_BIN="[$]AR"
480                 out="\[$]1"
481                 shift
482                 exec \[$]MSVC_BIN -out:"\[$]out" \[$]@
483                 EOF
484                 chmod +x mk_static_lib.sh
485                 AR=`pwd`/mk_static_lib.sh
486                 ;;
487         (*)
488                 cf_cv_ar_flags=unknown
489                 for cf_ar_flags in -curvU -curv curv -crv crv -cqv cqv -rv rv
490                 do
491
492                         # check if $ARFLAGS already contains this choice
493                         if test "x$ARFLAGS" != "x" ; then
494                                 cf_check_ar_flags=`echo "x$ARFLAGS" | sed -e "s/$cf_ar_flags\$//" -e "s/$cf_ar_flags / /"`
495                                 if test "x$ARFLAGS" != "$cf_check_ar_flags" ; then
496                                         cf_cv_ar_flags=
497                                         break
498                                 fi
499                         fi
500
501                         rm -f conftest.$ac_cv_objext
502                         rm -f conftest.a
503
504                         cat >conftest.$ac_ext <<EOF
505 #line __oline__ "configure"
506 int     testdata[[3]] = { 123, 456, 789 };
507 EOF
508                         if AC_TRY_EVAL(ac_compile) ; then
509                                 echo "$AR $ARFLAGS $cf_ar_flags conftest.a conftest.$ac_cv_objext" >&AC_FD_CC
510                                 $AR $ARFLAGS $cf_ar_flags conftest.a conftest.$ac_cv_objext 2>&AC_FD_CC 1>/dev/null
511                                 if test -f conftest.a ; then
512                                         cf_cv_ar_flags=$cf_ar_flags
513                                         break
514                                 fi
515                         else
516                                 CF_VERBOSE(cannot compile test-program)
517                                 break
518                         fi
519                 done
520                 rm -f conftest.a conftest.$ac_ext conftest.$ac_cv_objext
521                 ;;
522         esac
523 ])
524
525 if test -n "$ARFLAGS" ; then
526         if test -n "$cf_cv_ar_flags" ; then
527                 ARFLAGS="$ARFLAGS $cf_cv_ar_flags"
528         fi
529 else
530         ARFLAGS=$cf_cv_ar_flags
531 fi
532
533 AC_SUBST(ARFLAGS)
534 ])
535 dnl ---------------------------------------------------------------------------
536 dnl CF_AWK_BIG_PRINTF version: 5 updated: 2015/04/17 21:13:04
537 dnl -----------------
538 dnl Check if awk can handle big strings using printf.  Some older versions of
539 dnl awk choke on large strings passed via "%s".
540 dnl
541 dnl $1 = desired string size
542 dnl $2 = variable to set with result
543 AC_DEFUN([CF_AWK_BIG_PRINTF],
544 [
545         case x$AWK in
546         (x)
547                 eval $2=no
548                 ;;
549         (*)
550                 if ( ${AWK} 'BEGIN { xx = "x"; while (length(xx) < $1) { xx = xx "x"; }; printf("%s\n", xx); }' 2>/dev/null \
551                         | $AWK '{ printf "%d\n", length([$]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
552                         eval $2=yes
553                 else
554                         eval $2=no
555                 fi
556                 ;;
557         esac
558 ])dnl
559 dnl ---------------------------------------------------------------------------
560 dnl CF_BOOL_DECL version: 8 updated: 2004/01/30 15:51:18
561 dnl ------------
562 dnl Test if 'bool' is a builtin type in the configured C++ compiler.  Some
563 dnl older compilers (e.g., gcc 2.5.8) don't support 'bool' directly; gcc
564 dnl 2.6.3 does, in anticipation of the ANSI C++ standard.
565 dnl
566 dnl Treat the configuration-variable specially here, since we're directly
567 dnl substituting its value (i.e., 1/0).
568 dnl
569 dnl $1 is the shell variable to store the result in, if not $cv_cv_builtin_bool
570 AC_DEFUN([CF_BOOL_DECL],
571 [
572 AC_MSG_CHECKING(if we should include stdbool.h)
573
574 AC_CACHE_VAL(cf_cv_header_stdbool_h,[
575         AC_TRY_COMPILE([],[bool foo = false],
576                 [cf_cv_header_stdbool_h=0],
577                 [AC_TRY_COMPILE([
578 #ifndef __BEOS__
579 #include <stdbool.h>
580 #endif
581 ],[bool foo = false],
582                         [cf_cv_header_stdbool_h=1],
583                         [cf_cv_header_stdbool_h=0])])])
584
585 if test "$cf_cv_header_stdbool_h" = 1
586 then    AC_MSG_RESULT(yes)
587 else    AC_MSG_RESULT(no)
588 fi
589
590 AC_MSG_CHECKING([for builtin bool type])
591
592 AC_CACHE_VAL(ifelse($1,,cf_cv_builtin_bool,[$1]),[
593         AC_TRY_COMPILE([
594 #include <stdio.h>
595 #include <sys/types.h>
596 ],[bool x = false],
597                 [ifelse($1,,cf_cv_builtin_bool,[$1])=1],
598                 [ifelse($1,,cf_cv_builtin_bool,[$1])=0])
599         ])
600
601 if test "$ifelse($1,,cf_cv_builtin_bool,[$1])" = 1
602 then    AC_MSG_RESULT(yes)
603 else    AC_MSG_RESULT(no)
604 fi
605 ])dnl
606 dnl ---------------------------------------------------------------------------
607 dnl CF_BOOL_SIZE version: 17 updated: 2020/10/24 19:48:55
608 dnl ------------
609 dnl Test for the size of 'bool' in the configured C++ compiler (e.g., a type).
610 dnl Don't bother looking for bool.h, since it's been deprecated.
611 dnl
612 dnl If the current compiler is C rather than C++, we get the bool definition
613 dnl from <stdbool.h>.
614 AC_DEFUN([CF_BOOL_SIZE],
615 [
616 AC_CHECK_SIZEOF(bool,,[
617 #include <stdlib.h>
618 #include <stdio.h>
619
620 #if defined(__cplusplus)
621
622 #ifdef HAVE_GXX_BUILTIN_H
623 #include <g++/builtin.h>
624 #elif HAVE_GPP_BUILTIN_H
625 #include <gpp/builtin.h>
626 #elif HAVE_BUILTIN_H
627 #include <builtin.h>
628 #endif
629
630 #else
631
632 #if $cf_cv_header_stdbool_h
633 #include <stdbool.h>
634 #endif
635
636 #endif
637 ])
638
639 AC_CACHE_CHECK(for type of bool, cf_cv_type_of_bool,[
640         rm -f cf_test.out
641         AC_TRY_RUN([
642 #include <stdlib.h>
643 #include <stdio.h>
644
645 #if defined(__cplusplus)
646
647 #ifdef HAVE_GXX_BUILTIN_H
648 #include <g++/builtin.h>
649 #elif HAVE_GPP_BUILTIN_H
650 #include <gpp/builtin.h>
651 #elif HAVE_BUILTIN_H
652 #include <builtin.h>
653 #endif
654
655 #else
656
657 #if $cf_cv_header_stdbool_h
658 #include <stdbool.h>
659 #endif
660
661 #endif
662
663 int main(void)
664 {
665         FILE *fp = fopen("cf_test.out", "w");
666         if (fp != 0) {
667                 bool x = true;
668                 if ((bool)(-x) >= 0)
669                         fputs("unsigned ", fp);
670                 if (sizeof(x) == sizeof(int))       fputs("int",  fp);
671                 else if (sizeof(x) == sizeof(char)) fputs("char", fp);
672                 else if (sizeof(x) == sizeof(short))fputs("short",fp);
673                 else if (sizeof(x) == sizeof(long)) fputs("long", fp);
674                 fclose(fp);
675         }
676         ${cf_cv_main_return:-return}(0);
677 }
678                 ],
679                 [cf_cv_type_of_bool=`cat cf_test.out`
680                  if test -z "$cf_cv_type_of_bool"; then
681                    cf_cv_type_of_bool=unknown
682                  fi],
683                 [cf_cv_type_of_bool=unknown],
684                 [
685                 case x$ac_cv_sizeof_bool in
686                 (x1) cf_cv_type_of_bool="unsigned char";;
687                 (x2) cf_cv_type_of_bool="unsigned short";;
688                 (x4) cf_cv_type_of_bool="unsigned int";;
689                 (x8) cf_cv_type_of_bool="unsigned long";;
690                 (*)  cf_cv_type_of_bool=unknown;;
691                 esac
692                 ])
693         rm -f cf_test.out
694 ])
695
696 if test "$cf_cv_type_of_bool" = unknown ; then
697         case .$NCURSES_BOOL in
698         (.auto|.) NCURSES_BOOL=unsigned;;
699         esac
700         AC_MSG_WARN(Assuming $NCURSES_BOOL for type of bool)
701         cf_cv_type_of_bool=$NCURSES_BOOL
702 fi
703 ])dnl
704 dnl ---------------------------------------------------------------------------
705 dnl CF_BUILD_CC version: 8 updated: 2018/01/04 20:31:04
706 dnl -----------
707 dnl If we're cross-compiling, allow the user to override the tools and their
708 dnl options.  The configure script is oriented toward identifying the host
709 dnl compiler, etc., but we need a build compiler to generate parts of the
710 dnl source.
711 dnl
712 dnl $1 = default for $CPPFLAGS
713 dnl $2 = default for $LIBS
714 AC_DEFUN([CF_BUILD_CC],[
715 CF_ACVERSION_CHECK(2.52,,
716         [AC_REQUIRE([CF_PROG_EXT])])
717 if test "$cross_compiling" = yes ; then
718
719         # defaults that we might want to override
720         : ${BUILD_CFLAGS:=''}
721         : ${BUILD_CPPFLAGS:='ifelse([$1],,,[$1])'}
722         : ${BUILD_LDFLAGS:=''}
723         : ${BUILD_LIBS:='ifelse([$2],,,[$2])'}
724         : ${BUILD_EXEEXT:='$x'}
725         : ${BUILD_OBJEXT:='o'}
726
727         AC_ARG_WITH(build-cc,
728                 [  --with-build-cc=XXX     the build C compiler ($BUILD_CC)],
729                 [BUILD_CC="$withval"],
730                 [AC_CHECK_PROGS(BUILD_CC, [gcc clang c99 c89 cc cl],none)])
731         AC_MSG_CHECKING(for native build C compiler)
732         AC_MSG_RESULT($BUILD_CC)
733
734         AC_MSG_CHECKING(for native build C preprocessor)
735         AC_ARG_WITH(build-cpp,
736                 [  --with-build-cpp=XXX    the build C preprocessor ($BUILD_CPP)],
737                 [BUILD_CPP="$withval"],
738                 [BUILD_CPP='${BUILD_CC} -E'])
739         AC_MSG_RESULT($BUILD_CPP)
740
741         AC_MSG_CHECKING(for native build C flags)
742         AC_ARG_WITH(build-cflags,
743                 [  --with-build-cflags=XXX the build C compiler-flags ($BUILD_CFLAGS)],
744                 [BUILD_CFLAGS="$withval"])
745         AC_MSG_RESULT($BUILD_CFLAGS)
746
747         AC_MSG_CHECKING(for native build C preprocessor-flags)
748         AC_ARG_WITH(build-cppflags,
749                 [  --with-build-cppflags=XXX the build C preprocessor-flags ($BUILD_CPPFLAGS)],
750                 [BUILD_CPPFLAGS="$withval"])
751         AC_MSG_RESULT($BUILD_CPPFLAGS)
752
753         AC_MSG_CHECKING(for native build linker-flags)
754         AC_ARG_WITH(build-ldflags,
755                 [  --with-build-ldflags=XXX the build linker-flags ($BUILD_LDFLAGS)],
756                 [BUILD_LDFLAGS="$withval"])
757         AC_MSG_RESULT($BUILD_LDFLAGS)
758
759         AC_MSG_CHECKING(for native build linker-libraries)
760         AC_ARG_WITH(build-libs,
761                 [  --with-build-libs=XXX   the build libraries (${BUILD_LIBS})],
762                 [BUILD_LIBS="$withval"])
763         AC_MSG_RESULT($BUILD_LIBS)
764
765         # this assumes we're on Unix.
766         BUILD_EXEEXT=
767         BUILD_OBJEXT=o
768
769         : ${BUILD_CC:='${CC}'}
770
771         if ( test "$BUILD_CC" = "$CC" || test "$BUILD_CC" = '${CC}' ) ; then
772                 AC_MSG_ERROR([Cross-build requires two compilers.
773 Use --with-build-cc to specify the native compiler.])
774         fi
775
776 else
777         : ${BUILD_CC:='${CC}'}
778         : ${BUILD_CPP:='${CPP}'}
779         : ${BUILD_CFLAGS:='${CFLAGS}'}
780         : ${BUILD_CPPFLAGS:='${CPPFLAGS}'}
781         : ${BUILD_LDFLAGS:='${LDFLAGS}'}
782         : ${BUILD_LIBS:='${LIBS}'}
783         : ${BUILD_EXEEXT:='$x'}
784         : ${BUILD_OBJEXT:='o'}
785 fi
786
787 AC_SUBST(BUILD_CC)
788 AC_SUBST(BUILD_CPP)
789 AC_SUBST(BUILD_CFLAGS)
790 AC_SUBST(BUILD_CPPFLAGS)
791 AC_SUBST(BUILD_LDFLAGS)
792 AC_SUBST(BUILD_LIBS)
793 AC_SUBST(BUILD_EXEEXT)
794 AC_SUBST(BUILD_OBJEXT)
795 ])dnl
796 dnl ---------------------------------------------------------------------------
797 dnl CF_CC_ENV_FLAGS version: 9 updated: 2018/07/29 18:03:26
798 dnl ---------------
799 dnl Check for user's environment-breakage by stuffing CFLAGS/CPPFLAGS content
800 dnl into CC.  This will not help with broken scripts that wrap the compiler
801 dnl with options, but eliminates a more common category of user confusion.
802 dnl
803 dnl In particular, it addresses the problem of being able to run the C
804 dnl preprocessor in a consistent manner.
805 dnl
806 dnl Caveat: this also disallows blanks in the pathname for the compiler, but
807 dnl the nuisance of having inconsistent settings for compiler and preprocessor
808 dnl outweighs that limitation.
809 AC_DEFUN([CF_CC_ENV_FLAGS],
810 [
811 # This should have been defined by AC_PROG_CC
812 : ${CC:=cc}
813
814 AC_MSG_CHECKING(\$CFLAGS variable)
815 case "x$CFLAGS" in
816 (*-[[IUD]]*)
817         AC_MSG_RESULT(broken)
818         AC_MSG_WARN(your environment uses the CFLAGS variable to hold CPPFLAGS options)
819         cf_flags="$CFLAGS"
820         CFLAGS=
821         for cf_arg in $cf_flags
822         do
823                 CF_ADD_CFLAGS($cf_arg)
824         done
825         ;;
826 (*)
827         AC_MSG_RESULT(ok)
828         ;;
829 esac
830
831 AC_MSG_CHECKING(\$CC variable)
832 case "$CC" in
833 (*[[\ \ ]]-*)
834         AC_MSG_RESULT(broken)
835         AC_MSG_WARN(your environment uses the CC variable to hold CFLAGS/CPPFLAGS options)
836         # humor him...
837         cf_prog=`echo "$CC" | sed -e 's/        / /g' -e 's/[[ ]]* / /g' -e 's/[[ ]]*[[ ]]-[[^ ]].*//'`
838         cf_flags=`echo "$CC" | ${AWK:-awk} -v prog="$cf_prog" '{ printf("%s", [substr]([$]0,1+length(prog))); }'`
839         CC="$cf_prog"
840         for cf_arg in $cf_flags
841         do
842                 case "x$cf_arg" in
843                 (x-[[IUDfgOW]]*)
844                         CF_ADD_CFLAGS($cf_arg)
845                         ;;
846                 (*)
847                         CC="$CC $cf_arg"
848                         ;;
849                 esac
850         done
851         CF_VERBOSE(resulting CC: '$CC')
852         CF_VERBOSE(resulting CFLAGS: '$CFLAGS')
853         CF_VERBOSE(resulting CPPFLAGS: '$CPPFLAGS')
854         ;;
855 (*)
856         AC_MSG_RESULT(ok)
857         ;;
858 esac
859 ])dnl
860 dnl ---------------------------------------------------------------------------
861 dnl CF_CFG_DEFAULTS version: 11 updated: 2015/04/17 21:13:04
862 dnl ---------------
863 dnl Determine the default configuration into which we'll install ncurses.  This
864 dnl can be overridden by the user's command-line options.  There's two items to
865 dnl look for:
866 dnl     1. the prefix (e.g., /usr)
867 dnl     2. the header files (e.g., /usr/include/ncurses)
868 dnl We'll look for a previous installation of ncurses and use the same defaults.
869 dnl
870 dnl We don't use AC_PREFIX_DEFAULT, because it gets evaluated too soon, and
871 dnl we don't use AC_PREFIX_PROGRAM, because we cannot distinguish ncurses's
872 dnl programs from a vendor's.
873 AC_DEFUN([CF_CFG_DEFAULTS],
874 [
875 AC_MSG_CHECKING(for prefix)
876 if test "x$prefix" = "xNONE" ; then
877         case "$cf_cv_system_name" in
878                 # non-vendor systems don't have a conflict
879         (openbsd*|freebsd*|mirbsd*|linux*|cygwin*|msys*|k*bsd*-gnu|mingw*)
880                 prefix=/usr
881                 ;;
882         (*)     prefix=$ac_default_prefix
883                 ;;
884         esac
885 fi
886 AC_MSG_RESULT($prefix)
887
888 if test "x$prefix" = "xNONE" ; then
889 AC_MSG_CHECKING(for default include-directory)
890 test -n "$verbose" && echo 1>&AC_FD_MSG
891 for cf_symbol in \
892         $includedir \
893         $includedir/ncurses \
894         $prefix/include \
895         $prefix/include/ncurses \
896         /usr/local/include \
897         /usr/local/include/ncurses \
898         /usr/include \
899         /usr/include/ncurses
900 do
901         cf_dir=`eval echo $cf_symbol`
902         if test -f $cf_dir/curses.h ; then
903         if ( fgrep NCURSES_VERSION $cf_dir/curses.h 2>&1 >/dev/null ) ; then
904                 includedir="$cf_symbol"
905                 test -n "$verbose"  && echo $ac_n "     found " 1>&AC_FD_MSG
906                 break
907         fi
908         fi
909         test -n "$verbose"  && echo "   tested $cf_dir" 1>&AC_FD_MSG
910 done
911 AC_MSG_RESULT($includedir)
912 fi
913 ])dnl
914 dnl ---------------------------------------------------------------------------
915 dnl CF_CGETENT version: 6 updated: 2017/01/21 11:06:25
916 dnl ----------
917 dnl Check if the terminal-capability database functions are available.  If not,
918 dnl ncurses has a much-reduced version.
919 AC_DEFUN([CF_CGETENT],[
920 AC_CACHE_CHECK(for terminal-capability database functions,cf_cv_cgetent,[
921 AC_TRY_LINK([
922 #include <stdlib.h>],[
923         char temp[128];
924         char *buf = temp;
925         char *db_array = temp;
926         cgetent(&buf, &db_array, "vt100");
927         cgetcap(buf, "tc", '=');
928         cgetmatch(buf, "tc");
929         ],
930         [cf_cv_cgetent=yes],
931         [cf_cv_cgetent=no])
932 ])
933
934 if test "$cf_cv_cgetent" = yes
935 then
936         AC_DEFINE(HAVE_BSD_CGETENT,1,[Define to 1 if we have BSD cgetent])
937 AC_CACHE_CHECK(if cgetent uses const parameter,cf_cv_cgetent_const,[
938 AC_TRY_LINK([
939 #pragma GCC diagnostic error "-Wincompatible-pointer-types-discards-qualifiers"
940 #include <stdlib.h>],[
941         char temp[128];
942         char *buf = temp;
943 #ifndef _NETBSD_SOURCE                  /* given, since April 2004 in stdlib.h */
944         const char *db_array = temp;
945         cgetent(&buf, &db_array, "vt100");
946 #endif
947         cgetcap(buf, "tc", '=');
948         cgetmatch(buf, "tc");
949         ],
950         [cf_cv_cgetent_const=yes],
951         [cf_cv_cgetent_const=no])
952 ])
953         if test "$cf_cv_cgetent_const" = yes
954         then
955                 AC_DEFINE_UNQUOTED(CGETENT_CONST,const,[Define to const if needed for some BSD cgetent variations])
956         fi
957 fi
958 ])dnl
959 dnl ---------------------------------------------------------------------------
960 dnl CF_CHECK_CACHE version: 12 updated: 2012/10/02 20:55:03
961 dnl --------------
962 dnl Check if we're accidentally using a cache from a different machine.
963 dnl Derive the system name, as a check for reusing the autoconf cache.
964 dnl
965 dnl If we've packaged config.guess and config.sub, run that (since it does a
966 dnl better job than uname).  Normally we'll use AC_CANONICAL_HOST, but allow
967 dnl an extra parameter that we may override, e.g., for AC_CANONICAL_SYSTEM
968 dnl which is useful in cross-compiles.
969 dnl
970 dnl Note: we would use $ac_config_sub, but that is one of the places where
971 dnl autoconf 2.5x broke compatibility with autoconf 2.13
972 AC_DEFUN([CF_CHECK_CACHE],
973 [
974 if test -f $srcdir/config.guess || test -f $ac_aux_dir/config.guess ; then
975         ifelse([$1],,[AC_CANONICAL_HOST],[$1])
976         system_name="$host_os"
977 else
978         system_name="`(uname -s -r) 2>/dev/null`"
979         if test -z "$system_name" ; then
980                 system_name="`(hostname) 2>/dev/null`"
981         fi
982 fi
983 test -n "$system_name" && AC_DEFINE_UNQUOTED(SYSTEM_NAME,"$system_name",[Define to the system name.])
984 AC_CACHE_VAL(cf_cv_system_name,[cf_cv_system_name="$system_name"])
985
986 test -z "$system_name" && system_name="$cf_cv_system_name"
987 test -n "$cf_cv_system_name" && AC_MSG_RESULT(Configuring for $cf_cv_system_name)
988
989 if test ".$system_name" != ".$cf_cv_system_name" ; then
990         AC_MSG_RESULT(Cached system name ($system_name) does not agree with actual ($cf_cv_system_name))
991         AC_MSG_ERROR("Please remove config.cache and try again.")
992 fi
993 ])dnl
994 dnl ---------------------------------------------------------------------------
995 dnl CF_CHECK_ENVIRON version: 3 updated: 2010/05/26 16:44:57
996 dnl ----------------
997 dnl Check for data that is usually declared in <unistd.h>, e.g., the 'environ'
998 dnl variable.  Define a DECL_xxx symbol if we must declare it ourselves.
999 dnl
1000 dnl $1 = the name to check
1001 dnl $2 = the assumed type
1002 AC_DEFUN([CF_CHECK_ENVIRON],
1003 [
1004 AC_CACHE_CHECK(if external $1 is declared, cf_cv_dcl_$1,[
1005     AC_TRY_COMPILE([
1006 #ifdef HAVE_STDLIB_H
1007 #include <stdlib.h>
1008 #endif
1009 #include <unistd.h> ],
1010     ifelse([$2],,int,[$2]) x = (ifelse([$2],,int,[$2])) $1,
1011     [cf_cv_dcl_$1=yes],
1012     [cf_cv_dcl_$1=no])
1013 ])
1014
1015 if test "$cf_cv_dcl_$1" = no ; then
1016     CF_UPPER(cf_result,decl_$1)
1017     AC_DEFINE_UNQUOTED($cf_result)
1018 fi
1019
1020 # It's possible (for near-UNIX clones) that the data doesn't exist
1021 CF_CHECK_EXTERN_DATA($1,ifelse([$2],,int,[$2]))
1022 ])dnl
1023 dnl ---------------------------------------------------------------------------
1024 dnl CF_CHECK_ERRNO version: 13 updated: 2020/03/10 18:53:47
1025 dnl --------------
1026 dnl Check for data that is usually declared in <stdio.h> or <errno.h>, e.g.,
1027 dnl the 'errno' variable.  Define a DECL_xxx symbol if we must declare it
1028 dnl ourselves.
1029 dnl
1030 dnl $1 = the name to check
1031 dnl $2 = the assumed type
1032 AC_DEFUN([CF_CHECK_ERRNO],
1033 [
1034 AC_CACHE_CHECK(if external $1 is declared, cf_cv_dcl_$1,[
1035         AC_TRY_COMPILE([
1036 #ifdef HAVE_STDLIB_H
1037 #include <stdlib.h>
1038 #endif
1039 #include <stdio.h>
1040 #include <sys/types.h>
1041 #include <errno.h> ],
1042         ifelse([$2],,int,[$2]) x = (ifelse([$2],,int,[$2])) $1; (void)x,
1043         [cf_cv_dcl_$1=yes],
1044         [cf_cv_dcl_$1=no])
1045 ])
1046
1047 if test "$cf_cv_dcl_$1" = no ; then
1048         CF_UPPER(cf_result,decl_$1)
1049         AC_DEFINE_UNQUOTED($cf_result)
1050 fi
1051
1052 # It's possible (for near-UNIX clones) that the data doesn't exist
1053 CF_CHECK_EXTERN_DATA($1,ifelse([$2],,int,[$2]))
1054 ])dnl
1055 dnl ---------------------------------------------------------------------------
1056 dnl CF_CHECK_EXTERN_DATA version: 4 updated: 2015/04/18 08:56:57
1057 dnl --------------------
1058 dnl Check for existence of external data in the current set of libraries.  If
1059 dnl we can modify it, it's real enough.
1060 dnl $1 = the name to check
1061 dnl $2 = its type
1062 AC_DEFUN([CF_CHECK_EXTERN_DATA],
1063 [
1064 AC_CACHE_CHECK(if external $1 exists, cf_cv_have_$1,[
1065         AC_TRY_LINK([
1066 #undef $1
1067 extern $2 $1;
1068 ],
1069         [$1 = 2],
1070         [cf_cv_have_$1=yes],
1071         [cf_cv_have_$1=no])
1072 ])
1073
1074 if test "$cf_cv_have_$1" = yes ; then
1075         CF_UPPER(cf_result,have_$1)
1076         AC_DEFINE_UNQUOTED($cf_result)
1077 fi
1078
1079 ])dnl
1080 dnl ---------------------------------------------------------------------------
1081 dnl CF_CHECK_FVISIBILITY version: 2 updated: 2020/04/04 16:16:13
1082 dnl --------------------
1083 dnl Check whether the compiler understands -fvisibility=hidden
1084 dnl
1085 dnl $1 = compiler
1086 dnl $2 = compiler-flags variable name
1087 dnl $3 = cache variable to set
1088 AC_DEFUN([CF_CHECK_FVISIBILITY],[
1089 AC_CACHE_CHECK(if $1 -fvisibility=hidden option works,$3,[
1090     cf_save_cflags="[$]$2"
1091     $2="[$]$2 -fvisibility=hidden"
1092     AC_TRY_LINK([
1093 __attribute__ ((visibility("default"))) int somefunc() {return 42;}
1094         ],[
1095         if (somefunc()) return 1;
1096 ],
1097     [$3=yes],
1098     [$3=no])
1099     $2=$cf_save_cflags
1100 ])
1101 ])dnl
1102 dnl ---------------------------------------------------------------------------
1103 dnl CF_CHECK_GETENV version: 1 updated: 2019/06/23 15:28:15
1104 dnl ---------------
1105 dnl Check if repeated getenv calls return the same pointer, e.g., it does not
1106 dnl discard the previous pointer when returning a new one.
1107 AC_DEFUN([CF_CHECK_GETENV],
1108 [
1109 AC_REQUIRE([CF_CHECK_ENVIRON])
1110 AC_CHECK_FUNC( getenv, ,, AC_MSG_ERROR(getenv not found) )
1111 AC_CHECK_FUNCS( putenv setenv strdup )
1112 AC_CACHE_CHECK(if getenv returns consistent values,cf_cv_consistent_getenv,[
1113 AC_TRY_RUN([
1114 #include <stdlib.h>
1115 #include <unistd.h>
1116 #include <stdio.h>
1117 #include <string.h>
1118 #include <sys/types.h>
1119
1120 #if defined(HAVE_ENVIRON) && defined(DECL_ENVIRON) && !defined(environ)
1121 extern char **environ;  /* POSIX, but some systems are not... */
1122 #endif
1123
1124 #if defined(HAVE_STRDUP)
1125 #define str_alloc(s) strdup(s)
1126 #else
1127 #define str_alloc(s) strcpy(malloc(strlen(s) + 1, s))
1128 #endif
1129
1130 static void set_value(const char *name, const char *value)
1131 {
1132 #if defined(HAVE_SETENV)
1133         setenv(name, value, 1);
1134 #elif defined(HAVE_PUTENV)
1135         char buffer[1024];
1136         sprintf(buffer, "%s=%s", name, value);
1137         putenv(str_alloc(buffer));
1138 #else
1139 #error neither putenv/setenv found
1140 #endif
1141 }
1142 int main(void)
1143 {
1144         int pass;
1145         size_t numenv, limit, j;
1146         char **mynames;
1147         char **myvalues;
1148         char **mypointer;
1149         char *equals;
1150         for (numenv = 0; environ[numenv]; ++numenv) ;
1151         limit = numenv + 10;
1152         mynames = (char **) calloc(limit + 1, sizeof(char *));
1153         myvalues = (char **) calloc(limit + 1, sizeof(char *));
1154         mypointer = (char **) calloc(limit + 1, sizeof(char *));
1155 #if defined(HAVE_ENVIRON)
1156         for (j = 0; environ[j]; ++j) {
1157                 mynames[j] = str_alloc(environ[j]);
1158                 equals = strchr(mynames[j], '=');
1159                 if (equals != 0) {
1160                         *equals++ = '\0';
1161                         myvalues[j] = str_alloc(equals);
1162                 } else {
1163                         myvalues[j] = str_alloc("");
1164                 }
1165         }
1166 #endif
1167         for (j = numenv; j < limit; ++j) {
1168                 char name[80];
1169                 char value[80];
1170                 size_t found;
1171                 size_t k = 0;
1172                 do {
1173                         size_t jk;
1174                         found = 0;
1175                         sprintf(name, "TERM%lu", (unsigned long) k);
1176                         for (jk = 0; jk < j; ++jk) {
1177                                 if (!strcmp(name, mynames[jk])) {
1178                                         found = 1;
1179                                         ++k;
1180                                         break;
1181                                 }
1182                         }
1183                 } while (found);
1184                 sprintf(value, "%lu:%p", (unsigned long) k, &mynames[j]);
1185                 set_value(name, value);
1186                 mynames[j] = str_alloc(name);
1187                 myvalues[j] = str_alloc(value);
1188         }
1189         for (pass = 0; pass < 3; ++pass) {
1190                 for (j = 0; j < limit; ++j) {
1191                         char *value = getenv(mynames[j]);
1192                         if (pass) {
1193                                 if (value == 0) {
1194                                         fprintf(stderr, "getenv returned null for %s\n", mynames[j]);
1195                                         ${cf_cv_main_return:-return}(1);
1196                                 } else if (value != mypointer[j]) {
1197                                         fprintf(stderr, "getenv returned different pointer for %s\n", mynames[j]);
1198                                         ${cf_cv_main_return:-return}(1);
1199                                 } else if (strcmp(value, myvalues[j])) {
1200                                         fprintf(stderr, "getenv returned different value for %s\n", mynames[j]);
1201                                         ${cf_cv_main_return:-return}(1);
1202                                 }
1203                         } else {
1204                                 size_t k;
1205                                 mypointer[j] = value;
1206                                 for (k = 0; k < j; ++k) {
1207                                         if (mypointer[j] == mypointer[k]) {
1208                                                 fprintf(stderr, "getenv returned same pointer for %s and %s\n", mynames[j], mynames[k]);
1209                                                 ${cf_cv_main_return:-return}(1);
1210                                         }
1211                                 }
1212                         }
1213                 }
1214         }
1215         ${cf_cv_main_return:-return}(0);
1216 }
1217 ],
1218 [cf_cv_consistent_getenv=yes],
1219 [cf_cv_consistent_getenv=no],
1220 [cf_cv_consistent_getenv=unknown])
1221 ])
1222
1223 if test "x$cf_cv_consistent_getenv" = xno
1224 then
1225         AC_DEFINE(HAVE_CONSISTENT_GETENV,1,[Define to 1 if getenv repeatably returns the same value for a given name])
1226 fi
1227 ])dnl
1228 dnl ---------------------------------------------------------------------------
1229 dnl CF_CHECK_GNAT_VERSION version: 3 updated: 2020/05/23 19:39:36
1230 dnl ---------------------
1231 AC_DEFUN([CF_CHECK_GNAT_VERSION],
1232 [
1233 AC_REQUIRE([CF_GNAT_VERSION])
1234 case $cf_cv_gnat_version in
1235 (3.1[[1-9]]*|3.[[2-9]]*|[[4-9]].*|[[1-9]][[0-9]].[[0-9]]*|20[[0-9]][[0-9]])
1236         cf_cv_prog_gnat_correct=yes
1237         ;;
1238 (*)
1239         AC_MSG_WARN(Unsupported GNAT version $cf_cv_gnat_version. We require 3.11 or better. Disabling Ada95 binding.)
1240         cf_cv_prog_gnat_correct=no
1241         ;;
1242 esac
1243 ])
1244 dnl ---------------------------------------------------------------------------
1245 dnl CF_CHECK_GPM_WGETCH version: 3 updated: 2017/01/21 11:06:25
1246 dnl -------------------
1247 dnl Check if GPM is already linked with curses.  If so - and if the linkage
1248 dnl is not "weak" - warn about this because it can create problems linking
1249 dnl applications with ncurses.
1250 AC_DEFUN([CF_CHECK_GPM_WGETCH],[
1251 AC_CHECK_LIB(gpm,Gpm_Wgetch,[
1252
1253 AC_CACHE_CHECK(if GPM is weakly bound to curses library, cf_cv_check_gpm_wgetch,[
1254 cf_cv_check_gpm_wgetch=unknown
1255 if test "$cross_compiling" != yes ; then
1256
1257 cat >conftest.$ac_ext <<CF_EOF
1258 #include <gpm.h>
1259 int main(void)
1260 {
1261         Gpm_Wgetch();
1262         ${cf_cv_main_return:-return}(0);
1263 }
1264 CF_EOF
1265
1266         cf_save_LIBS="$LIBS"
1267         # This only works if we can look at the symbol table.  If a shared
1268         # library is stripped for install, we cannot use that.  So we're forced
1269         # to rely on the static library, noting that some packagers may not
1270         # include it.
1271         LIBS="-static -lgpm -dynamic $LIBS"
1272         if AC_TRY_EVAL(ac_compile) ; then
1273                 if AC_TRY_EVAL(ac_link) ; then
1274                         cf_cv_check_gpm_wgetch=`nm conftest$ac_exeext | egrep '\<wgetch\>' | egrep '\<[[vVwW]]\>'`
1275                         test -n "$cf_cv_check_gpm_wgetch" && cf_cv_check_gpm_wgetch=yes
1276                         test -z "$cf_cv_check_gpm_wgetch" && cf_cv_check_gpm_wgetch=no
1277                 fi
1278         fi
1279         rm -rf conftest*
1280         LIBS="$cf_save_LIBS"
1281 fi
1282 ])
1283
1284 if test "$cf_cv_check_gpm_wgetch" != yes ; then
1285         AC_MSG_WARN(GPM library is already linked with curses - read the FAQ)
1286 fi
1287 ])])dnl
1288 dnl ---------------------------------------------------------------------------
1289 dnl CF_CHECK_LIBTOOL_VERSION version: 1 updated: 2013/04/06 18:03:09
1290 dnl ------------------------
1291 dnl Show the version of libtool
1292 dnl
1293 dnl Save the version in a cache variable - this is not entirely a good thing,
1294 dnl but the version string from libtool is very ugly, and for bug reports it
1295 dnl might be useful to have the original string.
1296 AC_DEFUN([CF_CHECK_LIBTOOL_VERSION],[
1297 if test -n "$LIBTOOL" && test "$LIBTOOL" != none
1298 then
1299         AC_MSG_CHECKING(version of $LIBTOOL)
1300         CF_LIBTOOL_VERSION
1301         AC_MSG_RESULT($cf_cv_libtool_version)
1302         if test -z "$cf_cv_libtool_version" ; then
1303                 AC_MSG_ERROR(This is not GNU libtool)
1304         fi
1305 else
1306         AC_MSG_ERROR(GNU libtool has not been found)
1307 fi
1308 ])dnl
1309 dnl ---------------------------------------------------------------------------
1310 dnl CF_CHECK_WCHAR_H version: 2 updated: 2017/01/21 11:06:25
1311 dnl ----------------
1312 dnl Check if wchar.h can be used, i.e., without defining _XOPEN_SOURCE_EXTENDED
1313 AC_DEFUN([CF_CHECK_WCHAR_H],[
1314 AC_CHECK_HEADERS( \
1315 wchar.h \
1316 wctype.h \
1317 )
1318 AC_CACHE_CHECK(if wchar.h can be used as is,cf_cv_wchar_h_okay,[
1319 AC_TRY_COMPILE(
1320 [
1321 #include <stdlib.h>
1322 #ifdef HAVE_WCHAR_H
1323 #include <wchar.h>
1324 #endif
1325 #ifdef HAVE_WCTYPE_H
1326 #include <wctype.h>
1327 #endif
1328 ],[
1329         wint_t foo = 0;
1330         int bar = iswpunct(foo)],
1331         [cf_cv_wchar_h_okay=yes],
1332         [cf_cv_wchar_h_okay=no])])
1333
1334 if test $cf_cv_wchar_h_okay = no
1335 then
1336         CF_PREDEFINE(_XOPEN_SOURCE_EXTENDED)
1337 fi
1338 ])dnl
1339 dnl ---------------------------------------------------------------------------
1340 dnl CF_CHECK_WCWIDTH_GRAPHICS version: 1 updated: 2015/12/19 17:47:56
1341 dnl -------------------------
1342 dnl Most "modern" terminal emulators are based to some degree on VT100, and
1343 dnl should support line-drawing.  Even with Unicode.  There is a problem.
1344 dnl
1345 dnl While most of the VT100 graphics characters were incorporated into Unicode,
1346 dnl all of those were combined into a page of useful graphics characters.
1347 dnl
1348 dnl So far, so good.
1349 dnl
1350 dnl However, while they are useful, there are other considerations.  CJK
1351 dnl is (because of poor device resolution) often rendered as double-width
1352 dnl characters.  So... for these generally-useful characters, what should
1353 dnl be the width (to make them consistent with adjacent characters)?
1354 dnl
1355 dnl The obvious choice would have been to make this locale-dependent, and use
1356 dnl wcwidth() to tell applications what the actual width is.  That was too
1357 dnl obvious.  Instead, we have a slew of "ambiguous-width" characters.
1358 dnl See for example
1359 dnl             http://www.unicode.org/reports/tr11/tr11-29.html
1360 dnl             http://www.cl.cam.ac.uk/~mgk25/ucs/scw-proposal.html
1361 dnl
1362 dnl The EastAsianWidth-6.2.0.txt file from the Unicode organization lists
1363 dnl more than 22,000 characters, with 1281 of those as ambiguous-width.  For
1364 dnl instance, it lists half (44/96) of the Latin-1 characters as
1365 dnl ambiguous-width.  Also, all of the box-characters at 0x2500 are ambiguous.
1366 dnl
1367 dnl What this means for the implementor is that on some systems wcwidth() can
1368 dnl give bad advice.  On Solaris, some of the ambiguous widths are returned as
1369 dnl 1 (the Latin-1 characters), while others are returned as 2 (line-drawing
1370 dnl characters).  These do not necessarily match the behavior of the terminal
1371 dnl emulator.  xterm, for instance, does an optional startup check to find if
1372 dnl this problem (or similar) exists with the system's locale tables, rejecting
1373 dnl them if they are too unreliable.
1374 AC_DEFUN([CF_CHECK_WCWIDTH_GRAPHICS],[
1375 AC_CACHE_CHECK(if wcwidth agrees graphics are single-width, cf_cv_wcwidth_graphics,[
1376 cat >conftest.in <<CF_EOF
1377 -       VT100 symbols
1378 0x250c  upper left corner
1379 0x2514  lower left corner
1380 0x2510  upper right corner
1381 0x2518  lower right corner
1382 0x251c  tee pointing left
1383 0x2524  tee pointing right
1384 0x2534  tee pointing up
1385 0x252c  tee pointing down
1386 0x2500  horizontal line
1387 0x2502  vertical line
1388 0x253c  large plus or crossover
1389 0x23ba  scan line 1
1390 0x23bd  scan line 9
1391 0x25c6  diamond
1392 0x2592  checker board (stipple)
1393 0x00b0  degree symbol
1394 0x00b1  plus/minus
1395 0x00b7  bullet
1396 -       Teletype 5410v1 symbols
1397 0x2190  arrow pointing left
1398 0x2192  arrow pointing right
1399 0x2193  arrow pointing down
1400 0x2191  arrow pointing up
1401 0x2592  board of squares
1402 0x2603  lantern symbol
1403 0x25ae  solid square block
1404 -       these defaults were invented for ncurses
1405 0x23bb  scan line 3
1406 0x23bc  scan line 7
1407 0x2264  less-than-or-equal-to
1408 0x2265  greater-than-or-equal-to
1409 0x03c0  greek pi
1410 0x2260  not-equal
1411 0x00a3  pound-sterling symbol
1412 -       thick-line-drawing
1413 0x250f  upper left corner
1414 0x2517  lower left corner
1415 0x2513  upper right corner
1416 0x251b  lower right corner
1417 0x2523  tee pointing left
1418 0x252b  tee pointing right
1419 0x253b  tee pointing up
1420 0x2533  tee pointing down
1421 0x2501  horizontal line
1422 0x2503  vertical line
1423 0x254b  large plus or crossover
1424 -       double-line-drawing
1425 0x2554  upper left corner
1426 0x255a  lower left corner
1427 0x2557  upper right corner
1428 0x255d  lower right corner
1429 0x2563  tee pointing left
1430 0x2560  tee pointing right
1431 0x2569  tee pointing up
1432 0x2566  tee pointing down
1433 0x2550  horizontal line
1434 0x2551  vertical line
1435 0x256c  large plus or crossover
1436 CF_EOF
1437 AC_TRY_RUN([
1438 #include <locale.h>
1439 #include <stdio.h>
1440 #include <wchar.h>
1441
1442 #define MY_LEN 80
1443
1444 int
1445 main(void)
1446 {
1447         FILE *fp;
1448         int value;
1449         char buffer[MY_LEN + 1];
1450         char notes[MY_LEN + 1];
1451         int totals = 0;
1452         int passed = 0;
1453
1454         if (setlocale(LC_ALL, "en_US.UTF8") ||
1455                 setlocale(LC_ALL, "en_US.UTF-8") ||
1456                 setlocale(LC_ALL, "en_US.utf8") ||
1457                 setlocale(LC_ALL, "en_US.utf-8")) {
1458                 if ((fp = fopen("conftest.in", "r")) != 0) {
1459                         while (fgets(buffer, MY_LEN, fp) != 0) {
1460                                 if (*buffer == '-') {
1461                                         fprintf(stderr, "\t%s", buffer);
1462                                 } else if (sscanf(buffer, "%x %s", &value, notes) == 2) {
1463                                         ++totals;
1464                                         if (wcwidth(value) == 1)
1465                                                 ++passed;
1466                                         fprintf(stderr, "%d\t%s", wcwidth(value), buffer);
1467                                 } else {
1468                                         fprintf(stderr, "?\t%s", buffer);
1469                                 }
1470                         }
1471                 }
1472         }
1473         fprintf(stderr, "%d/%d passed wcwidth/graphics check\n", passed, totals);
1474         return (totals == passed) ? 0 : 1;
1475 }
1476 ],
1477 [cf_cv_wcwidth_graphics=yes],
1478 [cf_cv_wcwidth_graphics=no],
1479 [cf_cv_wcwidth_graphics=unknown])
1480 ])
1481 ])dnl
1482 dnl ---------------------------------------------------------------------------
1483 dnl CF_CLANG_COMPILER version: 6 updated: 2020/11/26 17:37:55
1484 dnl -----------------
1485 dnl Check if the given compiler is really clang.  clang's C driver defines
1486 dnl __GNUC__ (fooling the configure script into setting $GCC to yes) but does
1487 dnl not ignore some gcc options.
1488 dnl
1489 dnl This macro should be run "soon" after AC_PROG_CC or AC_PROG_CPLUSPLUS, to
1490 dnl ensure that it is not mistaken for gcc/g++.  It is normally invoked from
1491 dnl the wrappers for gcc and g++ warnings.
1492 dnl
1493 dnl $1 = GCC (default) or GXX
1494 dnl $2 = CLANG_COMPILER (default)
1495 dnl $3 = CFLAGS (default) or CXXFLAGS
1496 AC_DEFUN([CF_CLANG_COMPILER],[
1497 ifelse([$2],,CLANG_COMPILER,[$2])=no
1498
1499 if test "$ifelse([$1],,[$1],GCC)" = yes ; then
1500         AC_MSG_CHECKING(if this is really Clang ifelse([$1],GXX,C++,C) compiler)
1501         cf_save_CFLAGS="$ifelse([$3],,CFLAGS,[$3])"
1502         AC_TRY_COMPILE([],[
1503 #ifdef __clang__
1504 #else
1505 make an error
1506 #endif
1507 ],[ifelse([$2],,CLANG_COMPILER,[$2])=yes
1508 ],[])
1509         ifelse([$3],,CFLAGS,[$3])="$cf_save_CFLAGS"
1510         AC_MSG_RESULT($ifelse([$2],,CLANG_COMPILER,[$2]))
1511 fi
1512
1513 CLANG_VERSION=none
1514
1515 if test "x$ifelse([$2],,CLANG_COMPILER,[$2])" = "xyes" ; then
1516         case "$CC" in
1517         (c[[1-9]][[0-9]]|*/c[[1-9]][[0-9]])
1518                 AC_MSG_WARN(replacing broken compiler alias $CC)
1519                 CFLAGS="$CFLAGS -std=`echo "$CC" | sed -e 's%.*/%%'`"
1520                 CC=clang
1521                 ;;
1522         esac
1523
1524         AC_MSG_CHECKING(version of $CC)
1525         CLANG_VERSION="`$CC --version 2>/dev/null | sed -e '2,$d' -e 's/^.*(CLANG[[^)]]*) //' -e 's/^.*(Debian[[^)]]*) //' -e 's/^[[^0-9.]]*//' -e 's/[[^0-9.]].*//'`"
1526         test -z "$CLANG_VERSION" && CLANG_VERSION=unknown
1527         AC_MSG_RESULT($CLANG_VERSION)
1528
1529         for cf_clang_opt in \
1530                 -Qunused-arguments \
1531                 -Wno-error=implicit-function-declaration
1532         do
1533                 AC_MSG_CHECKING(if option $cf_clang_opt works)
1534                 cf_save_CFLAGS="$CFLAGS"
1535                 CFLAGS="$CFLAGS $cf_clang_opt"
1536                 AC_TRY_LINK([
1537                         #include <stdio.h>],[
1538                         printf("hello!\n");],[
1539                         cf_clang_optok=yes],[
1540                         cf_clang_optok=no])
1541                 AC_MSG_RESULT($cf_clang_optok)
1542                 CFLAGS="$cf_save_CFLAGS"
1543                 if test $cf_clang_optok = yes; then
1544                         CF_VERBOSE(adding option $cf_clang_opt)
1545                         CF_APPEND_TEXT(CFLAGS,$cf_clang_opt)
1546                 fi
1547         done
1548 fi
1549 ])
1550 dnl ---------------------------------------------------------------------------
1551 dnl CF_CONST_X_STRING version: 4 updated: 2020/03/10 18:53:47
1552 dnl -----------------
1553 dnl The X11R4-X11R6 Xt specification uses an ambiguous String type for most
1554 dnl character-strings.
1555 dnl
1556 dnl It is ambiguous because the specification accommodated the pre-ANSI
1557 dnl compilers bundled by more than one vendor in lieu of providing a standard C
1558 dnl compiler other than by costly add-ons.  Because of this, the specification
1559 dnl did not take into account the use of const for telling the compiler that
1560 dnl string literals would be in readonly memory.
1561 dnl
1562 dnl As a workaround, one could (starting with X11R5) define XTSTRINGDEFINES, to
1563 dnl let the compiler decide how to represent Xt's strings which were #define'd. 
1564 dnl That does not solve the problem of using the block of Xt's strings which
1565 dnl are compiled into the library (and is less efficient than one might want).
1566 dnl
1567 dnl Xt specification 7 introduces the _CONST_X_STRING symbol which is used both
1568 dnl when compiling the library and compiling using the library, to tell the
1569 dnl compiler that String is const.
1570 AC_DEFUN([CF_CONST_X_STRING],
1571 [
1572 AC_REQUIRE([AC_PATH_XTRA])
1573
1574 CF_SAVE_XTRA_FLAGS([CF_CONST_X_STRING])
1575
1576 AC_TRY_COMPILE(
1577 [
1578 #include <stdlib.h>
1579 #include <X11/Intrinsic.h>
1580 ],
1581 [String foo = malloc(1); (void)foo],[
1582
1583 AC_CACHE_CHECK(for X11/Xt const-feature,cf_cv_const_x_string,[
1584         AC_TRY_COMPILE(
1585                 [
1586 #define _CONST_X_STRING /* X11R7.8 (perhaps) */
1587 #undef  XTSTRINGDEFINES /* X11R5 and later */
1588 #include <stdlib.h>
1589 #include <X11/Intrinsic.h>
1590                 ],[String foo = malloc(1); *foo = 0],[
1591                         cf_cv_const_x_string=no
1592                 ],[
1593                         cf_cv_const_x_string=yes
1594                 ])
1595 ])
1596
1597 CF_RESTORE_XTRA_FLAGS([CF_CONST_X_STRING])
1598
1599 case $cf_cv_const_x_string in
1600 (no)
1601         CF_APPEND_TEXT(CPPFLAGS,-DXTSTRINGDEFINES)
1602         ;;
1603 (*)
1604         CF_APPEND_TEXT(CPPFLAGS,-D_CONST_X_STRING)
1605         ;;
1606 esac
1607
1608 ])
1609 ])dnl
1610 dnl ---------------------------------------------------------------------------
1611 dnl CF_CPP_PARAM_INIT version: 7 updated: 2017/01/21 11:06:25
1612 dnl -----------------
1613 dnl Check if the C++ compiler accepts duplicate parameter initialization.  This
1614 dnl is a late feature for the standard and is not in some recent compilers
1615 dnl (1999/9/11).
1616 AC_DEFUN([CF_CPP_PARAM_INIT],
1617 [
1618 if test -n "$CXX"; then
1619 AC_CACHE_CHECK(if $CXX accepts parameter initialization,cf_cv_cpp_param_init,[
1620         AC_LANG_SAVE
1621         AC_LANG_CPLUSPLUS
1622         AC_TRY_RUN([
1623 class TEST {
1624 private:
1625         int value;
1626 public:
1627         TEST(int x = 1);
1628         ~TEST();
1629 };
1630
1631 TEST::TEST(int x = 1)   // some compilers do not like second initializer
1632 {
1633         value = x;
1634 }
1635 int main(void) { }
1636 ],
1637         [cf_cv_cpp_param_init=yes],
1638         [cf_cv_cpp_param_init=no],
1639         [cf_cv_cpp_param_init=unknown])
1640         AC_LANG_RESTORE
1641 ])
1642 fi
1643 test "$cf_cv_cpp_param_init" = yes && AC_DEFINE(CPP_HAS_PARAM_INIT,1,[Define to 1 if C++ has parameter initialization])
1644 ])dnl
1645 dnl ---------------------------------------------------------------------------
1646 dnl CF_CPP_STATIC_CAST version: 3 updated: 2013/04/13 18:03:21
1647 dnl ------------------
1648 dnl Check if the C++ compiler accepts static_cast in generics.  This appears to
1649 dnl not be supported in g++ before 3.0
1650 AC_DEFUN([CF_CPP_STATIC_CAST],
1651 [
1652 if test -n "$CXX"; then
1653
1654 AC_CACHE_CHECK(if $CXX accepts static_cast,cf_cv_cpp_static_cast,[
1655         AC_LANG_SAVE
1656         AC_LANG_CPLUSPLUS
1657
1658         AC_TRY_COMPILE([
1659 class NCursesPanel
1660 {
1661 public:
1662   NCursesPanel(int nlines,
1663                int ncols,
1664                int begin_y = 0,
1665                int begin_x = 0)
1666   {
1667   }
1668   NCursesPanel();
1669   ~NCursesPanel();
1670 };
1671
1672 template<class T> class NCursesUserPanel : public NCursesPanel
1673 {
1674 public:
1675   NCursesUserPanel (int nlines,
1676                     int ncols,
1677                     int begin_y = 0,
1678                     int begin_x = 0,
1679                     const T* p_UserData = static_cast<T*>(0))
1680     : NCursesPanel (nlines, ncols, begin_y, begin_x)
1681   {
1682   };
1683   NCursesUserPanel(const T* p_UserData = static_cast<T*>(0)) : NCursesPanel()
1684   {
1685   };
1686
1687   virtual ~NCursesUserPanel() {};
1688 };
1689 ],[
1690         const char* p_UserData = static_cast<char*>(0)],
1691         [cf_cv_cpp_static_cast=yes],
1692         [cf_cv_cpp_static_cast=no])
1693
1694         AC_LANG_RESTORE
1695 ])
1696
1697 fi
1698
1699 test "$cf_cv_cpp_static_cast" = yes && AC_DEFINE(CPP_HAS_STATIC_CAST,1,[Define to 1 if C++ has static_cast])
1700 ])dnl
1701 dnl ---------------------------------------------------------------------------
1702 dnl CF_CXX_AR_FLAGS version: 2 updated: 2015/04/17 21:13:04
1703 dnl ---------------
1704 dnl Setup special archiver flags for given compilers.
1705 AC_DEFUN([CF_CXX_AR_FLAGS],[
1706         CXX_AR='$(AR)'
1707         CXX_ARFLAGS='$(ARFLAGS)'
1708         case $cf_cv_system_name in
1709         (irix*)
1710             if test "$GXX" != yes ; then
1711                 CXX_AR='$(CXX)'
1712                 CXX_ARFLAGS='-ar -o'
1713             fi
1714             ;;
1715         (sco3.2v5*)
1716             CXXLDFLAGS="-u main"
1717             ;;
1718         (solaris2*)
1719             if test "$GXX" != yes ; then
1720                 CXX_AR='$(CXX)'
1721                 CXX_ARFLAGS='-xar -o'
1722             fi
1723             ;;
1724         esac
1725         AC_SUBST(CXXLDFLAGS)
1726         AC_SUBST(CXX_AR)
1727         AC_SUBST(CXX_ARFLAGS)
1728 ])dnl
1729 dnl ---------------------------------------------------------------------------
1730 dnl CF_CXX_IOSTREAM_NAMESPACE version: 2 updated: 2012/10/06 17:56:13
1731 dnl -------------------------
1732 dnl For c++, check if iostream uses "std::" namespace.
1733 AC_DEFUN([CF_CXX_IOSTREAM_NAMESPACE],[
1734 AC_CHECK_HEADERS(iostream)
1735 if test x"$ac_cv_header_iostream" = xyes ; then
1736         AC_MSG_CHECKING(if iostream uses std-namespace)
1737         AC_TRY_COMPILE([
1738 #include <iostream>
1739 using std::endl;
1740 using std::cerr;],[
1741 cerr << "testing" << endl;
1742 ],[cf_iostream_namespace=yes],[cf_iostream_namespace=no])
1743         AC_MSG_RESULT($cf_iostream_namespace)
1744         if test "$cf_iostream_namespace" = yes ; then
1745                 AC_DEFINE(IOSTREAM_NAMESPACE,1,[Define to 1 if C++ has namespace iostream])
1746         fi
1747 fi
1748 ])dnl
1749 dnl ---------------------------------------------------------------------------
1750 dnl CF_C_INLINE version: 6 updated: 2019/09/07 13:38:36
1751 dnl -----------
1752 dnl Check if the C compiler supports "inline".
1753 dnl $1 is the name of a shell variable to set if inline is supported
1754 dnl $2 is the threshold for gcc 4.x's option controlling maximum inline size
1755 AC_DEFUN([CF_C_INLINE],[
1756 AC_REQUIRE([CF_GCC_VERSION])
1757 AC_C_INLINE
1758 $1=
1759 if test "$ac_cv_c_inline" != no ; then
1760         $1=inline
1761         if test "$INTEL_COMPILER" = yes
1762         then
1763                 :
1764         elif test "$CLANG_COMPILER" = yes
1765         then
1766                 :
1767         elif test "$GCC" = yes
1768         then
1769                 AC_CACHE_CHECK(if $CC supports options to tune inlining,cf_cv_gcc_inline,[
1770                 cf_save_CFLAGS=$CFLAGS
1771                 CFLAGS="$CFLAGS --param max-inline-insns-single=$2"
1772                 AC_TRY_COMPILE([inline int foo(void) { return 1; }],
1773                 [${cf_cv_main_return:-return} foo()],
1774                 [cf_cv_gcc_inline=yes],
1775                 [cf_cv_gcc_inline=no])
1776                 CFLAGS=$cf_save_CFLAGS
1777                 ])
1778                 if test "$cf_cv_gcc_inline" = yes ; then
1779                         CF_ADD_CFLAGS([--param max-inline-insns-single=$2])
1780                 fi
1781         fi
1782 fi
1783 AC_SUBST($1)
1784 ])dnl
1785 dnl ---------------------------------------------------------------------------
1786 dnl CF_DIRNAME version: 4 updated: 2002/12/21 19:25:52
1787 dnl ----------
1788 dnl "dirname" is not portable, so we fake it with a shell script.
1789 AC_DEFUN([CF_DIRNAME],[$1=`echo $2 | sed -e 's%/[[^/]]*$%%'`])dnl
1790 dnl ---------------------------------------------------------------------------
1791 dnl CF_DIRS_TO_MAKE version: 3 updated: 2002/02/23 20:38:31
1792 dnl ---------------
1793 AC_DEFUN([CF_DIRS_TO_MAKE],
1794 [
1795 DIRS_TO_MAKE="lib"
1796 for cf_item in $cf_list_models
1797 do
1798         CF_OBJ_SUBDIR($cf_item,cf_subdir)
1799         for cf_item2 in $DIRS_TO_MAKE
1800         do
1801                 test $cf_item2 = $cf_subdir && break
1802         done
1803         test ".$cf_item2" != ".$cf_subdir" && DIRS_TO_MAKE="$DIRS_TO_MAKE $cf_subdir"
1804 done
1805 for cf_dir in $DIRS_TO_MAKE
1806 do
1807         test ! -d $cf_dir && mkdir $cf_dir
1808 done
1809 AC_SUBST(DIRS_TO_MAKE)
1810 ])dnl
1811 dnl ---------------------------------------------------------------------------
1812 dnl CF_DISABLE_ECHO version: 13 updated: 2015/04/18 08:56:57
1813 dnl ---------------
1814 dnl You can always use "make -n" to see the actual options, but it's hard to
1815 dnl pick out/analyze warning messages when the compile-line is long.
1816 dnl
1817 dnl Sets:
1818 dnl     ECHO_LT - symbol to control if libtool is verbose
1819 dnl     ECHO_LD - symbol to prefix "cc -o" lines
1820 dnl     RULE_CC - symbol to put before implicit "cc -c" lines (e.g., .c.o)
1821 dnl     SHOW_CC - symbol to put before explicit "cc -c" lines
1822 dnl     ECHO_CC - symbol to put before any "cc" line
1823 dnl
1824 AC_DEFUN([CF_DISABLE_ECHO],[
1825 AC_MSG_CHECKING(if you want to see long compiling messages)
1826 CF_ARG_DISABLE(echo,
1827         [  --disable-echo          do not display "compiling" commands],
1828         [
1829         ECHO_LT='--silent'
1830         ECHO_LD='@echo linking [$]@;'
1831         RULE_CC='@echo compiling [$]<'
1832         SHOW_CC='@echo compiling [$]@'
1833         ECHO_CC='@'
1834 ],[
1835         ECHO_LT=''
1836         ECHO_LD=''
1837         RULE_CC=''
1838         SHOW_CC=''
1839         ECHO_CC=''
1840 ])
1841 AC_MSG_RESULT($enableval)
1842 AC_SUBST(ECHO_LT)
1843 AC_SUBST(ECHO_LD)
1844 AC_SUBST(RULE_CC)
1845 AC_SUBST(SHOW_CC)
1846 AC_SUBST(ECHO_CC)
1847 ])dnl
1848 dnl ---------------------------------------------------------------------------
1849 dnl CF_DISABLE_GNAT_PROJECTS version: 1 updated: 2014/06/01 11:34:00
1850 dnl ------------------------
1851 AC_DEFUN([CF_DISABLE_GNAT_PROJECTS],[
1852 AC_MSG_CHECKING(if we want to use GNAT projects)
1853 CF_ARG_DISABLE(gnat-projects,
1854         [  --disable-gnat-projects test: disable GNAT projects even if usable],
1855         [enable_gnat_projects=no],
1856         [enable_gnat_projects=yes])
1857 AC_MSG_RESULT($enable_gnat_projects)
1858 ])dnl
1859 dnl ---------------------------------------------------------------------------
1860 dnl CF_DISABLE_LEAKS version: 7 updated: 2012/10/02 20:55:03
1861 dnl ----------------
1862 dnl Combine no-leak checks with the libraries or tools that are used for the
1863 dnl checks.
1864 AC_DEFUN([CF_DISABLE_LEAKS],[
1865
1866 AC_REQUIRE([CF_WITH_DMALLOC])
1867 AC_REQUIRE([CF_WITH_DBMALLOC])
1868 AC_REQUIRE([CF_WITH_VALGRIND])
1869
1870 AC_MSG_CHECKING(if you want to perform memory-leak testing)
1871 AC_ARG_ENABLE(leaks,
1872         [  --disable-leaks         test: free permanent memory, analyze leaks],
1873         [if test "x$enableval" = xno; then with_no_leaks=yes; else with_no_leaks=no; fi],
1874         : ${with_no_leaks:=no})
1875 AC_MSG_RESULT($with_no_leaks)
1876
1877 if test "$with_no_leaks" = yes ; then
1878         AC_DEFINE(NO_LEAKS,1,[Define to 1 if you want to perform memory-leak testing.])
1879         AC_DEFINE(YY_NO_LEAKS,1,[Define to 1 if you want to perform memory-leak testing.])
1880 fi
1881 ])dnl
1882 dnl ---------------------------------------------------------------------------
1883 dnl CF_DISABLE_LIBTOOL_VERSION version: 3 updated: 2015/04/17 21:13:04
1884 dnl --------------------------
1885 dnl Check if we should use the libtool 1.5 feature "-version-number" instead of
1886 dnl the older "-version-info" feature.  The newer feature allows us to use
1887 dnl version numbering on shared libraries which make them compatible with
1888 dnl various systems.
1889 AC_DEFUN([CF_DISABLE_LIBTOOL_VERSION],
1890 [
1891 AC_MSG_CHECKING(if libtool -version-number should be used)
1892 CF_ARG_DISABLE(libtool-version,
1893         [  --disable-libtool-version  enable to use libtool's incompatible naming scheme],
1894         [cf_libtool_version=no],
1895         [cf_libtool_version=yes])
1896 AC_MSG_RESULT($cf_libtool_version)
1897
1898 if test "$cf_libtool_version" = yes ; then
1899         LIBTOOL_VERSION="-version-number"
1900 else
1901         LIBTOOL_VERSION="-version-info"
1902         case "x$VERSION" in
1903         (x)
1904                 AC_MSG_WARN(VERSION was not set)
1905                 ;;
1906         (x*.*.*)
1907                 ABI_VERSION="$VERSION"
1908                 CF_VERBOSE(ABI_VERSION: $ABI_VERSION)
1909                 ;;
1910         (x*:*:*)
1911                 ABI_VERSION=`echo "$VERSION" | sed -e 's/:/./g'`
1912                 CF_VERBOSE(ABI_VERSION: $ABI_VERSION)
1913                 ;;
1914         (*)
1915                 AC_MSG_WARN(unexpected VERSION value: $VERSION)
1916                 ;;
1917         esac
1918 fi
1919
1920 AC_SUBST(ABI_VERSION)
1921 AC_SUBST(LIBTOOL_VERSION)
1922 ])dnl
1923 dnl ---------------------------------------------------------------------------
1924 dnl CF_DISABLE_RPATH_HACK version: 2 updated: 2011/02/13 13:31:33
1925 dnl ---------------------
1926 dnl The rpath-hack makes it simpler to build programs, particularly with the
1927 dnl *BSD ports which may have essential libraries in unusual places.  But it
1928 dnl can interfere with building an executable for the base system.  Use this
1929 dnl option in that case.
1930 AC_DEFUN([CF_DISABLE_RPATH_HACK],
1931 [
1932 AC_MSG_CHECKING(if rpath-hack should be disabled)
1933 CF_ARG_DISABLE(rpath-hack,
1934         [  --disable-rpath-hack    don't add rpath options for additional libraries],
1935         [cf_disable_rpath_hack=yes],
1936         [cf_disable_rpath_hack=no])
1937 AC_MSG_RESULT($cf_disable_rpath_hack)
1938 if test "$cf_disable_rpath_hack" = no ; then
1939         CF_RPATH_HACK
1940 fi
1941 ])
1942 dnl ---------------------------------------------------------------------------
1943 dnl CF_ENABLE_BROKEN_LINKER version: 1 updated: 2020/02/08 15:59:30
1944 dnl -----------------------
1945 dnl Some linkers cannot reference a data-only object.  Cygwin used to be one.
1946 dnl This usually follows CF_LINK_DATAONLY, but is not required in case we need
1947 dnl an unconditional feature.
1948 AC_DEFUN([CF_ENABLE_BROKEN_LINKER],[
1949
1950 AC_MSG_CHECKING(if you want broken-linker support code)
1951 AC_ARG_ENABLE(broken_linker,
1952         [  --enable-broken_linker  compile with broken-linker support code],
1953         [with_broken_linker=$enableval],
1954         [with_broken_linker=no])
1955 AC_MSG_RESULT($with_broken_linker)
1956
1957 : ${BROKEN_LINKER:=0}
1958 if test "x$with_broken_linker" = xyes ; then
1959         AC_DEFINE(BROKEN_LINKER,1,[Define to 1 to work around linkers which cannot link data-only modules])
1960         BROKEN_LINKER=1
1961 fi
1962 AC_SUBST(BROKEN_LINKER)
1963 ])dnl
1964 dnl ---------------------------------------------------------------------------
1965 dnl CF_ENABLE_PC_FILES version: 13 updated: 2015/11/01 05:27:39
1966 dnl ------------------
1967 dnl This is the "--enable-pc-files" option, which is available if there is a
1968 dnl pkg-config configuration on the local machine.
1969 AC_DEFUN([CF_ENABLE_PC_FILES],[
1970 AC_REQUIRE([CF_PKG_CONFIG])
1971 AC_REQUIRE([CF_WITH_PKG_CONFIG_LIBDIR])
1972
1973 if test "x$PKG_CONFIG" != xnone
1974 then
1975         AC_MSG_CHECKING(if we should install .pc files for $PKG_CONFIG)
1976 else
1977         AC_MSG_CHECKING(if we should install .pc files)
1978 fi
1979
1980 AC_ARG_ENABLE(pc-files,
1981         [  --enable-pc-files       generate and install .pc files for pkg-config],
1982         [enable_pc_files=$enableval],
1983         [enable_pc_files=no])
1984 AC_MSG_RESULT($enable_pc_files)
1985
1986 if test "x$enable_pc_files" != xno
1987 then
1988         MAKE_PC_FILES=
1989         case "x$PKG_CONFIG_LIBDIR" in
1990         (xno|xyes)
1991                 AC_MSG_WARN(no PKG_CONFIG_LIBDIR was found)
1992                 ;;
1993         (*)
1994                 CF_PATH_SYNTAX(PKG_CONFIG_LIBDIR)
1995                 ;;
1996         esac
1997 else
1998         MAKE_PC_FILES="#"
1999 fi
2000 AC_SUBST(MAKE_PC_FILES)
2001 ])dnl
2002 dnl ---------------------------------------------------------------------------
2003 dnl CF_ENABLE_RPATH version: 2 updated: 2010/03/27 18:39:42
2004 dnl ---------------
2005 dnl Check if the rpath option should be used, setting cache variable
2006 dnl cf_cv_enable_rpath if so.
2007 AC_DEFUN([CF_ENABLE_RPATH],
2008 [
2009 AC_MSG_CHECKING(if rpath option should be used)
2010 AC_ARG_ENABLE(rpath,
2011 [  --enable-rpath          use rpath option when generating shared libraries],
2012 [cf_cv_enable_rpath=$enableval],
2013 [cf_cv_enable_rpath=no])
2014 AC_MSG_RESULT($cf_cv_enable_rpath)
2015 ])dnl
2016 dnl ---------------------------------------------------------------------------
2017 dnl CF_ENABLE_STRING_HACKS version: 5 updated: 2016/10/08 17:34:11
2018 dnl ----------------------
2019 dnl On a few platforms, the compiler and/or loader nags with untruthful
2020 dnl comments stating that "most" uses of strcat/strcpy/sprintf are incorrect,
2021 dnl and implying that most uses of the recommended alternatives are correct.
2022 dnl
2023 dnl Factually speaking, no one has actually counted the number of uses of these
2024 dnl functions versus the total of incorrect uses.  Samples of a few thousand
2025 dnl instances are meaningless compared to the hundreds of millions of lines of
2026 dnl existing C code.
2027 dnl
2028 dnl strlcat/strlcpy are (as of 2012) non-standard, and are available on some
2029 dnl platforms, in implementations of varying quality.  Likewise, snprintf is
2030 dnl standard - but evolved through phases, and older implementations are likely
2031 dnl to yield surprising results, as documented in manpages on various systems.
2032 AC_DEFUN([CF_ENABLE_STRING_HACKS],
2033 [
2034 AC_MSG_CHECKING(if you want to work around bogus compiler/loader warnings)
2035 AC_ARG_ENABLE(string-hacks,
2036         [  --enable-string-hacks   work around bogus compiler/loader warnings],
2037         [with_string_hacks=$enableval],
2038         [with_string_hacks=no])
2039 AC_MSG_RESULT($with_string_hacks)
2040
2041 if test "x$with_string_hacks" = "xyes"; then
2042         AC_DEFINE(USE_STRING_HACKS,1,[Define to 1 to work around bogus compiler/loader warnings])
2043         AC_MSG_WARN(enabling string-hacks to work around bogus compiler/loader warnings)
2044         AC_CHECK_FUNC(strlcat,[
2045                 AC_DEFINE(HAVE_STRLCAT,1,[Define to 1 if we have strlcat function])
2046                 ],[
2047                 AC_CHECK_LIB(bsd,strlcat,[
2048                         CF_ADD_LIB(bsd)
2049                         AC_CHECK_HEADERS(bsd/string.h)
2050                         AC_DEFINE(HAVE_STRLCAT,1,[Define to 1 if we have strlcat function])
2051                         ])
2052                 ])
2053         AC_CHECK_FUNCS( strlcpy snprintf )
2054 fi
2055 ])dnl
2056 dnl ---------------------------------------------------------------------------
2057 dnl CF_ENABLE_WARNINGS version: 7 updated: 2020/08/29 09:05:21
2058 dnl ------------------
2059 dnl Configure-option to enable gcc warnings
2060 dnl
2061 dnl $1 = extra options to add, if supported
2062 dnl $2 = option for checking attributes.  By default, this is done when
2063 dnl      warnings are enabled.  For other values:
2064 dnl      yes: always do this, e.g., to use in generated library-headers
2065 dnl      no: never do this
2066 AC_DEFUN([CF_ENABLE_WARNINGS],[
2067 if ( test "$GCC" = yes || test "$GXX" = yes )
2068 then
2069 CF_FIX_WARNINGS(CFLAGS)
2070 CF_FIX_WARNINGS(CPPFLAGS)
2071 CF_FIX_WARNINGS(LDFLAGS)
2072 AC_MSG_CHECKING(if you want to turn on gcc warnings)
2073 CF_ARG_ENABLE(warnings,
2074         [  --enable-warnings       test: turn on gcc compiler warnings],
2075         [with_warnings=yes],
2076         [with_warnings=no])
2077 AC_MSG_RESULT($with_warnings)
2078 if test "$with_warnings" = "yes"
2079 then
2080         ifelse($2,,[CF_GCC_ATTRIBUTES])
2081         CF_GCC_WARNINGS($1)
2082 fi
2083 ifelse($2,yes,[CF_GCC_ATTRIBUTES])
2084 fi
2085 ])dnl
2086 dnl ---------------------------------------------------------------------------
2087 dnl CF_ERRNO version: 5 updated: 1997/11/30 12:44:39
2088 dnl --------
2089 dnl Check if 'errno' is declared in <errno.h>
2090 AC_DEFUN([CF_ERRNO],
2091 [
2092 CF_CHECK_ERRNO(errno)
2093 ])dnl
2094 dnl ---------------------------------------------------------------------------
2095 dnl CF_ETIP_DEFINES version: 5 updated: 2012/02/18 17:51:07
2096 dnl ---------------
2097 dnl Test for conflicting definitions of exception in gcc 2.8.0, etc., between
2098 dnl math.h and builtin.h, only for ncurses
2099 AC_DEFUN([CF_ETIP_DEFINES],
2100 [
2101 AC_MSG_CHECKING(for special defines needed for etip.h)
2102 cf_save_CXXFLAGS="$CXXFLAGS"
2103 cf_result="none"
2104
2105 # etip.h includes ncurses.h which includes ncurses_dll.h
2106 # But ncurses_dll.h is generated - fix here.
2107 test -d include || mkdir include
2108 test -f include/ncurses_dll.h || sed -e 's/@NCURSES_WRAP_PREFIX@/'$NCURSES_WRAP_PREFIX'/g' ${srcdir}/include/ncurses_dll.h.in >include/ncurses_dll.h
2109
2110 for cf_math in "" MATH_H
2111 do
2112 for cf_excp in "" MATH_EXCEPTION
2113 do
2114         CXXFLAGS="$cf_save_CXXFLAGS -I${srcdir}/c++ -I${srcdir}/menu -Iinclude -I${srcdir}/include"
2115         test -n "$cf_math" && CXXFLAGS="$CXXFLAGS -DETIP_NEEDS_${cf_math}"
2116         test -n "$cf_excp" && CXXFLAGS="$CXXFLAGS -DETIP_NEEDS_${cf_excp}"
2117 AC_TRY_COMPILE([
2118 #include <etip.h.in>
2119 ],[],[
2120         test -n "$cf_math" && AC_DEFINE_UNQUOTED(ETIP_NEEDS_${cf_math})
2121         test -n "$cf_excp" && AC_DEFINE_UNQUOTED(ETIP_NEEDS_${cf_excp})
2122         cf_result="$cf_math $cf_excp"
2123         break 2
2124 ],[])
2125 done
2126 done
2127 AC_MSG_RESULT($cf_result)
2128 CXXFLAGS="$cf_save_CXXFLAGS"
2129 ])
2130 dnl ---------------------------------------------------------------------------
2131 dnl CF_FIND_LINKAGE version: 21 updated: 2018/06/20 20:23:13
2132 dnl ---------------
2133 dnl Find a library (specifically the linkage used in the code fragment),
2134 dnl searching for it if it is not already in the library path.
2135 dnl See also CF_ADD_SEARCHPATH.
2136 dnl
2137 dnl Parameters (4-on are optional):
2138 dnl     $1 = headers for library entrypoint
2139 dnl     $2 = code fragment for library entrypoint
2140 dnl     $3 = the library name without the "-l" option or ".so" suffix.
2141 dnl     $4 = action to perform if successful (default: update CPPFLAGS, etc)
2142 dnl     $5 = action to perform if not successful
2143 dnl     $6 = module name, if not the same as the library name
2144 dnl     $7 = extra libraries
2145 dnl
2146 dnl Sets these variables:
2147 dnl     $cf_cv_find_linkage_$3 - yes/no according to whether linkage is found
2148 dnl     $cf_cv_header_path_$3 - include-directory if needed
2149 dnl     $cf_cv_library_path_$3 - library-directory if needed
2150 dnl     $cf_cv_library_file_$3 - library-file if needed, e.g., -l$3
2151 AC_DEFUN([CF_FIND_LINKAGE],[
2152
2153 # If the linkage is not already in the $CPPFLAGS/$LDFLAGS configuration, these
2154 # will be set on completion of the AC_TRY_LINK below.
2155 cf_cv_header_path_$3=
2156 cf_cv_library_path_$3=
2157
2158 CF_MSG_LOG([Starting [FIND_LINKAGE]($3,$6)])
2159
2160 cf_save_LIBS="$LIBS"
2161
2162 AC_TRY_LINK([$1],[$2],[
2163         cf_cv_find_linkage_$3=yes
2164         cf_cv_header_path_$3=/usr/include
2165         cf_cv_library_path_$3=/usr/lib
2166 ],[
2167
2168 LIBS="-l$3 $7 $cf_save_LIBS"
2169
2170 AC_TRY_LINK([$1],[$2],[
2171         cf_cv_find_linkage_$3=yes
2172         cf_cv_header_path_$3=/usr/include
2173         cf_cv_library_path_$3=/usr/lib
2174         cf_cv_library_file_$3="-l$3"
2175 ],[
2176         cf_cv_find_linkage_$3=no
2177         LIBS="$cf_save_LIBS"
2178
2179         CF_VERBOSE(find linkage for $3 library)
2180         CF_MSG_LOG([Searching for headers in [FIND_LINKAGE]($3,$6)])
2181
2182         cf_save_CPPFLAGS="$CPPFLAGS"
2183         cf_test_CPPFLAGS="$CPPFLAGS"
2184
2185         CF_HEADER_PATH(cf_search,ifelse([$6],,[$3],[$6]))
2186         for cf_cv_header_path_$3 in $cf_search
2187         do
2188                 if test -d $cf_cv_header_path_$3 ; then
2189                         CF_VERBOSE(... testing $cf_cv_header_path_$3)
2190                         CPPFLAGS="$cf_save_CPPFLAGS"
2191                         CF_APPEND_TEXT(CPPFLAGS,-I$cf_cv_header_path_$3)
2192                         AC_TRY_COMPILE([$1],[$2],[
2193                                 CF_VERBOSE(... found $3 headers in $cf_cv_header_path_$3)
2194                                 cf_cv_find_linkage_$3=maybe
2195                                 cf_test_CPPFLAGS="$CPPFLAGS"
2196                                 break],[
2197                                 CPPFLAGS="$cf_save_CPPFLAGS"
2198                                 ])
2199                 fi
2200         done
2201
2202         if test "$cf_cv_find_linkage_$3" = maybe ; then
2203
2204                 CF_MSG_LOG([Searching for $3 library in [FIND_LINKAGE]($3,$6)])
2205
2206                 cf_save_LIBS="$LIBS"
2207                 cf_save_LDFLAGS="$LDFLAGS"
2208
2209                 ifelse([$6],,,[
2210                 CPPFLAGS="$cf_test_CPPFLAGS"
2211                 LIBS="-l$3 $7 $cf_save_LIBS"
2212                 AC_TRY_LINK([$1],[$2],[
2213                         CF_VERBOSE(... found $3 library in system)
2214                         cf_cv_find_linkage_$3=yes])
2215                         CPPFLAGS="$cf_save_CPPFLAGS"
2216                         LIBS="$cf_save_LIBS"
2217                         ])
2218
2219                 if test "$cf_cv_find_linkage_$3" != yes ; then
2220                         CF_LIBRARY_PATH(cf_search,$3)
2221                         for cf_cv_library_path_$3 in $cf_search
2222                         do
2223                                 if test -d $cf_cv_library_path_$3 ; then
2224                                         CF_VERBOSE(... testing $cf_cv_library_path_$3)
2225                                         CPPFLAGS="$cf_test_CPPFLAGS"
2226                                         LIBS="-l$3 $7 $cf_save_LIBS"
2227                                         LDFLAGS="$cf_save_LDFLAGS -L$cf_cv_library_path_$3"
2228                                         AC_TRY_LINK([$1],[$2],[
2229                                         CF_VERBOSE(... found $3 library in $cf_cv_library_path_$3)
2230                                         cf_cv_find_linkage_$3=yes
2231                                         cf_cv_library_file_$3="-l$3"
2232                                         break],[
2233                                         CPPFLAGS="$cf_save_CPPFLAGS"
2234                                         LIBS="$cf_save_LIBS"
2235                                         LDFLAGS="$cf_save_LDFLAGS"
2236                                         ])
2237                                 fi
2238                         done
2239                         CPPFLAGS="$cf_save_CPPFLAGS"
2240                         LDFLAGS="$cf_save_LDFLAGS"
2241                 fi
2242
2243         else
2244                 cf_cv_find_linkage_$3=no
2245         fi
2246         ],$7)
2247 ])
2248
2249 LIBS="$cf_save_LIBS"
2250
2251 if test "$cf_cv_find_linkage_$3" = yes ; then
2252 ifelse([$4],,[
2253         CF_ADD_INCDIR($cf_cv_header_path_$3)
2254         CF_ADD_LIBDIR($cf_cv_library_path_$3)
2255         CF_ADD_LIB($3)
2256 ],[$4])
2257 else
2258 ifelse([$5],,AC_MSG_WARN(Cannot find $3 library),[$5])
2259 fi
2260 ])dnl
2261 dnl ---------------------------------------------------------------------------
2262 dnl CF_FIND_SUB_INCDIR version: 2 updated: 2015/04/17 21:13:04
2263 dnl ------------------
2264 dnl Find an include-directory with the given leaf-name.  This is useful for
2265 dnl example with FreeBSD ports, which use this convention to distinguish
2266 dnl different versions of the same port.
2267 AC_DEFUN([CF_FIND_SUB_INCDIR],[
2268         CF_SUBDIR_PATH(cf_search,$1,include)
2269         for cf_item in $cf_search
2270         do
2271                 case $cf_item in
2272                 (*/$1)
2273                         CF_ADD_INCDIR($cf_item)
2274                         ;;
2275                 esac
2276         done
2277 ])dnl
2278 dnl ---------------------------------------------------------------------------
2279 dnl CF_FIND_SUB_LIBDIR version: 2 updated: 2015/04/17 21:13:04
2280 dnl ------------------
2281 dnl Find a library-directory with the given leaf-name.  This is useful for
2282 dnl example with FreeBSD ports, which use this convention to distinguish
2283 dnl different versions of the same port.
2284 AC_DEFUN([CF_FIND_SUB_LIBDIR],[
2285         CF_SUBDIR_PATH(cf_search,$1,lib)
2286         for cf_item in $cf_search
2287         do
2288                 case $cf_item in
2289                 (*/$1)
2290                         CF_ADD_LIBDIR($cf_item)
2291                         ;;
2292                 esac
2293         done
2294 ])dnl
2295 dnl ---------------------------------------------------------------------------
2296 dnl CF_FIXUP_ADAFLAGS version: 2 updated: 2015/04/17 21:13:04
2297 dnl -----------------
2298 dnl make ADAFLAGS consistent with CFLAGS
2299 AC_DEFUN([CF_FIXUP_ADAFLAGS],[
2300         AC_MSG_CHECKING(optimization options for ADAFLAGS)
2301         case "$CFLAGS" in
2302         (*-g*)
2303                 CF_ADD_ADAFLAGS(-g)
2304                 ;;
2305         esac
2306         case "$CFLAGS" in
2307         (*-O*)
2308                 cf_O_flag=`echo "$CFLAGS" |sed -e 's/^.*-O/-O/' -e 's/[[        ]].*//'`
2309                 CF_ADD_ADAFLAGS($cf_O_flag)
2310                 ;;
2311         esac
2312         AC_MSG_RESULT($ADAFLAGS)
2313 ])dnl
2314 dnl ---------------------------------------------------------------------------
2315 dnl CF_FIX_WARNINGS version: 2 updated: 2020/08/28 15:08:28
2316 dnl ---------------
2317 dnl Warning flags do not belong in CFLAGS, CPPFLAGS, etc.  Any of gcc's
2318 dnl "-Werror" flags can interfere with configure-checks.  Those go into
2319 dnl EXTRA_CFLAGS.
2320 dnl
2321 dnl $1 = variable name to repair
2322 define([CF_FIX_WARNINGS],[
2323 if ( test "$GCC" = yes || test "$GXX" = yes )
2324 then
2325         case [$]$1 in
2326         (*-Werror=*)
2327                 CF_VERBOSE(repairing $1: [$]$1)
2328                 cf_temp_flags=
2329                 for cf_temp_scan in [$]$1
2330                 do
2331                         case "x$cf_temp_scan" in
2332                         (x-Werror=*)
2333                                 CF_APPEND_TEXT(EXTRA_CFLAGS,"$cf_temp_scan")
2334                                 ;;
2335                         (*)
2336                                 CF_APPEND_TEXT(cf_temp_flags,"$cf_temp_scan")
2337                                 ;;
2338                         esac
2339                 done
2340                 $1="$cf_temp_flags"
2341                 CF_VERBOSE(... fixed [$]$1)
2342                 CF_VERBOSE(... extra $EXTRA_CFLAGS)
2343                 ;;
2344         esac
2345 fi
2346 AC_SUBST(EXTRA_CFLAGS)
2347 ])dnl
2348 dnl ---------------------------------------------------------------------------
2349 dnl CF_FOPEN_BIN_R version: 2 updated: 2019/12/31 08:53:54
2350 dnl --------------
2351 dnl Check if fopen works when the "b" (binary) flag is added to the mode
2352 dnl parameter.  POSIX ignores the "b", which c89 specified.  Some very old
2353 dnl systems do not accept it.
2354 AC_DEFUN([CF_FOPEN_BIN_R],[
2355 AC_CACHE_CHECK(if fopen accepts explicit binary mode,cf_cv_fopen_bin_r,[
2356         AC_TRY_RUN([
2357 #include <stdio.h>
2358 int main(void) {
2359         FILE *fp = fopen("conftest.tmp", "wb");
2360         int rc = 0;
2361         if (fp != 0) {
2362                 int p, q;
2363                 for (p = 0; p < 256; ++p) {
2364                         fputc(p, fp);
2365                 }
2366                 fclose(fp);
2367                 fp = fopen("conftest.tmp", "rb");
2368                 if (fp != 0) {
2369                         for (p = 0; p < 256; ++p) {
2370                                 q = fgetc(fp);
2371                                 if (q != p) {
2372                                         rc = 1;
2373                                         break;
2374                                 }
2375                         }
2376                 } else {
2377                         rc = 1;
2378                 }
2379         } else {
2380                 rc = 1;
2381         }
2382         ${cf_cv_main_return:-return} (rc);
2383 }
2384 ],
2385                 [cf_cv_fopen_bin_r=yes],
2386                 [cf_cv_fopen_bin_r=no],
2387                 [cf_cv_fopen_bin_r=unknown])
2388 ])
2389 test "x$cf_cv_fopen_bin_r" != xno && AC_DEFINE(USE_FOPEN_BIN_R,1,[Define to 1 if fopen accepts explicit binary mode])
2390 ])dnl
2391 dnl ---------------------------------------------------------------------------
2392 dnl CF_FORGET_TOOL version: 1 updated: 2013/04/06 18:03:09
2393 dnl --------------
2394 dnl Forget that we saw the given tool.
2395 AC_DEFUN([CF_FORGET_TOOL],[
2396 unset ac_cv_prog_ac_ct_$1
2397 unset ac_ct_$1
2398 unset $1
2399 ])dnl
2400 dnl ---------------------------------------------------------------------------
2401 dnl CF_FUNC_DLSYM version: 4 updated: 2015/09/12 14:46:44
2402 dnl -------------
2403 dnl Test for dlsym() and related functions, as well as libdl.
2404 dnl
2405 dnl Sets
2406 dnl     $cf_have_dlsym
2407 dnl     $cf_have_libdl
2408 AC_DEFUN([CF_FUNC_DLSYM],[
2409 cf_have_dlsym=no
2410 AC_CHECK_FUNC(dlsym,cf_have_dlsym=yes,[
2411
2412 cf_have_libdl=no
2413 AC_CHECK_LIB(dl,dlsym,[
2414         cf_have_dlsym=yes
2415         cf_have_libdl=yes])])
2416
2417 if test "$cf_have_dlsym" = yes ; then
2418         test "$cf_have_libdl" = yes && { CF_ADD_LIB(dl) }
2419
2420         AC_MSG_CHECKING(whether able to link to dl*() functions)
2421         AC_TRY_LINK([#include <dlfcn.h>],[
2422                 void *obj;
2423                 if ((obj = dlopen("filename", 0)) != 0) {
2424                         if (dlsym(obj, "symbolname") == 0) {
2425                         dlclose(obj);
2426                         }
2427                 }],[
2428                 AC_DEFINE(HAVE_LIBDL,1,[Define to 1 if we have dl library])],[
2429                 AC_MSG_ERROR(Cannot link test program for libdl)])
2430         AC_MSG_RESULT(ok)
2431 else
2432         AC_MSG_ERROR(Cannot find dlsym function)
2433 fi
2434 ])
2435 dnl ---------------------------------------------------------------------------
2436 dnl CF_FUNC_MEMMOVE version: 9 updated: 2017/01/21 11:06:25
2437 dnl ---------------
2438 dnl Check for memmove, or a bcopy that can handle overlapping copy.  If neither
2439 dnl is found, add our own version of memmove to the list of objects.
2440 AC_DEFUN([CF_FUNC_MEMMOVE],
2441 [
2442 AC_CHECK_FUNC(memmove,,[
2443 AC_CHECK_FUNC(bcopy,[
2444         AC_CACHE_CHECK(if bcopy does overlapping moves,cf_cv_good_bcopy,[
2445                 AC_TRY_RUN([
2446 int main(void) {
2447         static char data[] = "abcdefghijklmnopqrstuwwxyz";
2448         char temp[40];
2449         bcopy(data, temp, sizeof(data));
2450         bcopy(temp+10, temp, 15);
2451         bcopy(temp+5, temp+15, 10);
2452         ${cf_cv_main_return:-return} (strcmp(temp, "klmnopqrstuwwxypqrstuwwxyz"));
2453 }
2454                 ],
2455                 [cf_cv_good_bcopy=yes],
2456                 [cf_cv_good_bcopy=no],
2457                 [cf_cv_good_bcopy=unknown])
2458                 ])
2459         ],[cf_cv_good_bcopy=no])
2460         if test "$cf_cv_good_bcopy" = yes ; then
2461                 AC_DEFINE(USE_OK_BCOPY,1,[Define to 1 to use bcopy when memmove is unavailable])
2462         else
2463                 AC_DEFINE(USE_MY_MEMMOVE,1,[Define to 1 to use replacement function when memmove is unavailable])
2464         fi
2465 ])])dnl
2466 dnl ---------------------------------------------------------------------------
2467 dnl CF_FUNC_NANOSLEEP version: 5 updated: 2017/01/21 11:06:25
2468 dnl -----------------
2469 dnl Check for existence of workable nanosleep() function.  Some systems, e.g.,
2470 dnl AIX 4.x, provide a non-working version.
2471 AC_DEFUN([CF_FUNC_NANOSLEEP],[
2472 AC_CACHE_CHECK(if nanosleep really works,cf_cv_func_nanosleep,[
2473 AC_TRY_RUN([
2474 #include <stdio.h>
2475 #include <errno.h>
2476 #include <time.h>
2477
2478 #ifdef HAVE_SYS_TIME_H
2479 #include <sys/time.h>
2480 #endif
2481
2482 int main(void) {
2483         struct timespec ts1, ts2;
2484         int code;
2485         ts1.tv_sec  = 0;
2486         ts1.tv_nsec = 750000000;
2487         ts2.tv_sec  = 0;
2488         ts2.tv_nsec = 0;
2489         errno = 0;
2490         code = nanosleep(&ts1, &ts2); /* on failure errno is ENOSYS. */
2491         ${cf_cv_main_return:-return}(code != 0);
2492 }
2493 ],
2494         [cf_cv_func_nanosleep=yes],
2495         [cf_cv_func_nanosleep=no],
2496         [cf_cv_func_nanosleep=unknown])])
2497
2498 test "$cf_cv_func_nanosleep" = "yes" && AC_DEFINE(HAVE_NANOSLEEP,1,[Define to 1 if we have nanosleep()])
2499 ])
2500 dnl ---------------------------------------------------------------------------
2501 dnl CF_FUNC_OPENPTY version: 5 updated: 2015/09/12 14:46:50
2502 dnl ---------------
2503 dnl Check for openpty() function, along with <pty.h> header.  It may need the
2504 dnl "util" library as well.
2505 AC_DEFUN([CF_FUNC_OPENPTY],
2506 [
2507 AC_CHECK_LIB(util,openpty,cf_cv_lib_util=yes,cf_cv_lib_util=no)
2508 AC_CACHE_CHECK(for openpty header,cf_cv_func_openpty,[
2509         cf_save_LIBS="$LIBS"
2510         test $cf_cv_lib_util = yes && { CF_ADD_LIB(util) }
2511         for cf_header in pty.h libutil.h util.h
2512         do
2513         AC_TRY_LINK([
2514 #include <$cf_header>
2515 ],[
2516         int x = openpty((int *)0, (int *)0, (char *)0,
2517                                    (struct termios *)0, (struct winsize *)0);
2518 ],[
2519                 cf_cv_func_openpty=$cf_header
2520                 break
2521 ],[
2522                 cf_cv_func_openpty=no
2523 ])
2524         done
2525         LIBS="$cf_save_LIBS"
2526 ])
2527 ])dnl
2528 dnl ---------------------------------------------------------------------------
2529 dnl CF_FUNC_POLL version: 9 updated: 2015/10/10 13:27:32
2530 dnl ------------
2531 dnl See if the poll function really works.  Some platforms have poll(), but
2532 dnl it does not work for terminals or files.
2533 AC_DEFUN([CF_FUNC_POLL],[
2534 tty 2>&1 >/dev/null || { AC_CHECK_FUNCS(posix_openpt) }
2535 AC_CACHE_CHECK(if poll really works,cf_cv_working_poll,[
2536 AC_TRY_RUN([
2537 #include <stdlib.h>
2538 #include <stdio.h>
2539 #include <unistd.h>
2540 #include <fcntl.h>
2541 #ifdef HAVE_POLL_H
2542 #include <poll.h>
2543 #else
2544 #include <sys/poll.h>
2545 #endif
2546 int main(void) {
2547         struct pollfd myfds;
2548         int ret;
2549
2550         /* check for Darwin bug with respect to "devices" */
2551         myfds.fd = open("/dev/null", 1);        /* O_WRONLY */
2552         if (myfds.fd < 0)
2553                 myfds.fd = 0;
2554         myfds.events = POLLIN;
2555         myfds.revents = 0;
2556
2557         ret = poll(&myfds, 1, 100);
2558
2559         if (ret < 0 || (myfds.revents & POLLNVAL)) {
2560                 ret = -1;
2561         } else {
2562                 int fd = 0;
2563                 if (!isatty(fd)) {
2564                         fd = open("/dev/tty", 2);       /* O_RDWR */
2565                 }
2566 #ifdef HAVE_POSIX_OPENPT
2567                 if (fd < 0) {
2568                         fd = posix_openpt(O_RDWR);
2569                 }
2570 #endif
2571
2572                 if (fd >= 0) {
2573                         /* also check with standard input */
2574                         myfds.fd = fd;
2575                         myfds.events = POLLIN;
2576                         myfds.revents = 0;
2577                         ret = poll(&myfds, 1, 100);
2578                 } else {
2579                         ret = -1;
2580                 }
2581         }
2582         ${cf_cv_main_return:-return}(ret < 0);
2583 }],
2584         [cf_cv_working_poll=yes],
2585         [cf_cv_working_poll=no],
2586         [cf_cv_working_poll=unknown])])
2587 test "$cf_cv_working_poll" = "yes" && AC_DEFINE(HAVE_WORKING_POLL,1,[Define to 1 if the poll function seems to work])
2588 ])dnl
2589 dnl ---------------------------------------------------------------------------
2590 dnl CF_FUNC_TERMIOS version: 3 updated: 2012/10/06 17:56:13
2591 dnl ---------------
2592 dnl Some old/broken variations define tcgetattr() only as a macro in
2593 dnl termio(s).h
2594 AC_DEFUN([CF_FUNC_TERMIOS],[
2595 AC_REQUIRE([CF_STRUCT_TERMIOS])
2596 AC_CACHE_CHECK(for tcgetattr, cf_cv_have_tcgetattr,[
2597 AC_TRY_LINK([
2598 #include <sys/types.h>
2599 #ifdef HAVE_UNISTD_H
2600 #include <unistd.h>
2601 #endif
2602 #ifdef HAVE_TERMIOS_H
2603 #include <termios.h>
2604 #define TTY struct termios
2605 #else
2606 #ifdef HAVE_TERMIO_H
2607 #include <termio.h>
2608 #define TTY struct termio
2609 #endif
2610 #endif
2611 ],[
2612 TTY foo;
2613 tcgetattr(1, &foo);],
2614 [cf_cv_have_tcgetattr=yes],
2615 [cf_cv_have_tcgetattr=no])])
2616 test "$cf_cv_have_tcgetattr" = yes && AC_DEFINE(HAVE_TCGETATTR,1,[Define to 1 if we have tcgetattr])
2617 ])dnl
2618 dnl ---------------------------------------------------------------------------
2619 dnl CF_FUNC_VSSCANF version: 6 updated: 2015/04/18 08:56:57
2620 dnl ---------------
2621 dnl Check for vsscanf() function, which is in c9x but generally not in earlier
2622 dnl versions of C.  It is in the GNU C library, and can often be simulated by
2623 dnl other functions.
2624 AC_DEFUN([CF_FUNC_VSSCANF],
2625 [
2626 AC_CACHE_CHECK(for vsscanf function or workaround,cf_cv_func_vsscanf,[
2627 AC_TRY_LINK([
2628 #include <stdarg.h>
2629 #include <stdio.h>],[
2630         va_list ap;
2631         vsscanf("from", "%d", ap)],[cf_cv_func_vsscanf=vsscanf],[
2632 AC_TRY_LINK([
2633 #include <stdarg.h>
2634 #include <stdio.h>],[
2635         FILE strbuf;
2636         char *str = "from";
2637
2638         strbuf._flag = _IOREAD;
2639         strbuf._ptr = strbuf._base = (unsigned char *) str;
2640         strbuf._cnt = strlen(str);
2641         strbuf._file = _NFILE;
2642         return (vfscanf(&strbuf, "%d", ap))],[cf_cv_func_vsscanf=vfscanf],[
2643 AC_TRY_LINK([
2644 #include <stdarg.h>
2645 #include <stdio.h>],[
2646         FILE strbuf;
2647         char *str = "from";
2648
2649         strbuf._flag = _IOREAD;
2650         strbuf._ptr = strbuf._base = (unsigned char *) str;
2651         strbuf._cnt = strlen(str);
2652         strbuf._file = _NFILE;
2653         return (_doscan(&strbuf, "%d", ap))],[cf_cv_func_vsscanf=_doscan],[
2654 cf_cv_func_vsscanf=no])])])])
2655
2656 case $cf_cv_func_vsscanf in
2657 (vsscanf) AC_DEFINE(HAVE_VSSCANF,1,[Define to 1 if we have vsscanf]);;
2658 (vfscanf) AC_DEFINE(HAVE_VFSCANF,1,[Define to 1 if we have vfscanf]);;
2659 (_doscan) AC_DEFINE(HAVE__DOSCAN,1,[Define to 1 if we have _doscan]);;
2660 esac
2661
2662 ])dnl
2663 dnl ---------------------------------------------------------------------------
2664 dnl CF_GCC_ATTRIBUTES version: 19 updated: 2020/08/29 09:05:21
2665 dnl -----------------
2666 dnl Test for availability of useful gcc __attribute__ directives to quiet
2667 dnl compiler warnings.  Though useful, not all are supported -- and contrary
2668 dnl to documentation, unrecognized directives cause older compilers to barf.
2669 AC_DEFUN([CF_GCC_ATTRIBUTES],
2670 [
2671 if ( test "$GCC" = yes || test "$GXX" = yes )
2672 then
2673 cat > conftest.i <<EOF
2674 #ifndef GCC_PRINTF
2675 #define GCC_PRINTF 0
2676 #endif
2677 #ifndef GCC_SCANF
2678 #define GCC_SCANF 0
2679 #endif
2680 #ifndef GCC_NORETURN
2681 #define GCC_NORETURN /* nothing */
2682 #endif
2683 #ifndef GCC_UNUSED
2684 #define GCC_UNUSED /* nothing */
2685 #endif
2686 EOF
2687 if test "$GCC" = yes
2688 then
2689         AC_CHECKING([for $CC __attribute__ directives])
2690 cat > conftest.$ac_ext <<EOF
2691 #line __oline__ "${as_me:-configure}"
2692 #include "confdefs.h"
2693 #include "conftest.h"
2694 #include "conftest.i"
2695 #if     GCC_PRINTF
2696 #define GCC_PRINTFLIKE(fmt,var) __attribute__((format(printf,fmt,var)))
2697 #else
2698 #define GCC_PRINTFLIKE(fmt,var) /*nothing*/
2699 #endif
2700 #if     GCC_SCANF
2701 #define GCC_SCANFLIKE(fmt,var)  __attribute__((format(scanf,fmt,var)))
2702 #else
2703 #define GCC_SCANFLIKE(fmt,var)  /*nothing*/
2704 #endif
2705 extern void wow(char *,...) GCC_SCANFLIKE(1,2);
2706 extern void oops(char *,...) GCC_PRINTFLIKE(1,2) GCC_NORETURN;
2707 extern void foo(void) GCC_NORETURN;
2708 int main(int argc GCC_UNUSED, char *argv[[]] GCC_UNUSED) { (void)argc; (void)argv; return 0; }
2709 EOF
2710         cf_printf_attribute=no
2711         cf_scanf_attribute=no
2712         for cf_attribute in scanf printf unused noreturn
2713         do
2714                 CF_UPPER(cf_ATTRIBUTE,$cf_attribute)
2715                 cf_directive="__attribute__(($cf_attribute))"
2716                 echo "checking for $CC $cf_directive" 1>&AC_FD_CC
2717
2718                 case $cf_attribute in
2719                 (printf)
2720                         cf_printf_attribute=yes
2721                         cat >conftest.h <<EOF
2722 #define GCC_$cf_ATTRIBUTE 1
2723 EOF
2724                         ;;
2725                 (scanf)
2726                         cf_scanf_attribute=yes
2727                         cat >conftest.h <<EOF
2728 #define GCC_$cf_ATTRIBUTE 1
2729 EOF
2730                         ;;
2731                 (*)
2732                         cat >conftest.h <<EOF
2733 #define GCC_$cf_ATTRIBUTE $cf_directive
2734 EOF
2735                         ;;
2736                 esac
2737
2738                 if AC_TRY_EVAL(ac_compile); then
2739                         test -n "$verbose" && AC_MSG_RESULT(... $cf_attribute)
2740                         cat conftest.h >>confdefs.h
2741                         case $cf_attribute in
2742                         (noreturn)
2743                                 AC_DEFINE_UNQUOTED(GCC_NORETURN,$cf_directive,[Define to noreturn-attribute for gcc])
2744                                 ;;
2745                         (printf)
2746                                 cf_value='/* nothing */'
2747                                 if test "$cf_printf_attribute" != no ; then
2748                                         cf_value='__attribute__((format(printf,fmt,var)))'
2749                                         AC_DEFINE(GCC_PRINTF,1,[Define to 1 if the compiler supports gcc-like printf attribute.])
2750                                 fi
2751                                 AC_DEFINE_UNQUOTED(GCC_PRINTFLIKE(fmt,var),$cf_value,[Define to printf-attribute for gcc])
2752                                 ;;
2753                         (scanf)
2754                                 cf_value='/* nothing */'
2755                                 if test "$cf_scanf_attribute" != no ; then
2756                                         cf_value='__attribute__((format(scanf,fmt,var)))'
2757                                         AC_DEFINE(GCC_SCANF,1,[Define to 1 if the compiler supports gcc-like scanf attribute.])
2758                                 fi
2759                                 AC_DEFINE_UNQUOTED(GCC_SCANFLIKE(fmt,var),$cf_value,[Define to sscanf-attribute for gcc])
2760                                 ;;
2761                         (unused)
2762                                 AC_DEFINE_UNQUOTED(GCC_UNUSED,$cf_directive,[Define to unused-attribute for gcc])
2763                                 ;;
2764                         esac
2765                 fi
2766         done
2767 else
2768         fgrep define conftest.i >>confdefs.h
2769 fi
2770 rm -rf conftest*
2771 fi
2772 ])dnl
2773 dnl ---------------------------------------------------------------------------
2774 dnl CF_GCC_VERSION version: 8 updated: 2019/09/07 13:38:36
2775 dnl --------------
2776 dnl Find version of gcc, and (because icc/clang pretend to be gcc without being
2777 dnl compatible), attempt to determine if icc/clang is actually used.
2778 AC_DEFUN([CF_GCC_VERSION],[
2779 AC_REQUIRE([AC_PROG_CC])
2780 GCC_VERSION=none
2781 if test "$GCC" = yes ; then
2782         AC_MSG_CHECKING(version of $CC)
2783         GCC_VERSION="`${CC} --version 2>/dev/null | sed -e '2,$d' -e 's/^.*(GCC[[^)]]*) //' -e 's/^.*(Debian[[^)]]*) //' -e 's/^[[^0-9.]]*//' -e 's/[[^0-9.]].*//'`"
2784         test -z "$GCC_VERSION" && GCC_VERSION=unknown
2785         AC_MSG_RESULT($GCC_VERSION)
2786 fi
2787 CF_INTEL_COMPILER(GCC,INTEL_COMPILER,CFLAGS)
2788 CF_CLANG_COMPILER(GCC,CLANG_COMPILER,CFLAGS)
2789 ])dnl
2790 dnl ---------------------------------------------------------------------------
2791 dnl CF_GCC_WARNINGS version: 38 updated: 2020/08/28 15:08:28
2792 dnl ---------------
2793 dnl Check if the compiler supports useful warning options.  There's a few that
2794 dnl we don't use, simply because they're too noisy:
2795 dnl
2796 dnl     -Wconversion (useful in older versions of gcc, but not in gcc 2.7.x)
2797 dnl     -Winline (usually not worthwhile)
2798 dnl     -Wredundant-decls (system headers make this too noisy)
2799 dnl     -Wtraditional (combines too many unrelated messages, only a few useful)
2800 dnl     -Wwrite-strings (too noisy, but should review occasionally).  This
2801 dnl             is enabled for ncurses using "--enable-const".
2802 dnl     -pedantic
2803 dnl
2804 dnl Parameter:
2805 dnl     $1 is an optional list of gcc warning flags that a particular
2806 dnl             application might want to use, e.g., "no-unused" for
2807 dnl             -Wno-unused
2808 dnl Special:
2809 dnl     If $with_ext_const is "yes", add a check for -Wwrite-strings
2810 dnl
2811 AC_DEFUN([CF_GCC_WARNINGS],
2812 [
2813 AC_REQUIRE([CF_GCC_VERSION])
2814 if test "x$have_x" = xyes; then CF_CONST_X_STRING fi
2815 cat > conftest.$ac_ext <<EOF
2816 #line __oline__ "${as_me:-configure}"
2817 int main(int argc, char *argv[[]]) { return (argv[[argc-1]] == 0) ; }
2818 EOF
2819 if test "$INTEL_COMPILER" = yes
2820 then
2821 # The "-wdXXX" options suppress warnings:
2822 # remark #1419: external declaration in primary source file
2823 # remark #1683: explicit conversion of a 64-bit integral type to a smaller integral type (potential portability problem)
2824 # remark #1684: conversion from pointer to same-sized integral type (potential portability problem)
2825 # remark #193: zero used for undefined preprocessing identifier
2826 # remark #593: variable "curs_sb_left_arrow" was set but never used
2827 # remark #810: conversion from "int" to "Dimension={unsigned short}" may lose significant bits
2828 # remark #869: parameter "tw" was never referenced
2829 # remark #981: operands are evaluated in unspecified order
2830 # warning #279: controlling expression is constant
2831
2832         AC_CHECKING([for $CC warning options])
2833         cf_save_CFLAGS="$CFLAGS"
2834         EXTRA_CFLAGS="$EXTRA_CFLAGS -Wall"
2835         for cf_opt in \
2836                 wd1419 \
2837                 wd1683 \
2838                 wd1684 \
2839                 wd193 \
2840                 wd593 \
2841                 wd279 \
2842                 wd810 \
2843                 wd869 \
2844                 wd981
2845         do
2846                 CFLAGS="$cf_save_CFLAGS $EXTRA_CFLAGS -$cf_opt"
2847                 if AC_TRY_EVAL(ac_compile); then
2848                         test -n "$verbose" && AC_MSG_RESULT(... -$cf_opt)
2849                         EXTRA_CFLAGS="$EXTRA_CFLAGS -$cf_opt"
2850                 fi
2851         done
2852         CFLAGS="$cf_save_CFLAGS"
2853 elif test "$GCC" = yes && test "$GCC_VERSION" != "unknown"
2854 then
2855         AC_CHECKING([for $CC warning options])
2856         cf_save_CFLAGS="$CFLAGS"
2857         cf_warn_CONST=""
2858         test "$with_ext_const" = yes && cf_warn_CONST="Wwrite-strings"
2859         cf_gcc_warnings="Wignored-qualifiers Wlogical-op Wvarargs"
2860         test "x$CLANG_COMPILER" = xyes && cf_gcc_warnings=
2861         for cf_opt in W Wall \
2862                 Wbad-function-cast \
2863                 Wcast-align \
2864                 Wcast-qual \
2865                 Wdeclaration-after-statement \
2866                 Wextra \
2867                 Winline \
2868                 Wmissing-declarations \
2869                 Wmissing-prototypes \
2870                 Wnested-externs \
2871                 Wpointer-arith \
2872                 Wshadow \
2873                 Wstrict-prototypes \
2874                 Wundef Wno-inline $cf_gcc_warnings $cf_warn_CONST $1
2875         do
2876                 CFLAGS="$cf_save_CFLAGS $EXTRA_CFLAGS -$cf_opt"
2877                 if AC_TRY_EVAL(ac_compile); then
2878                         test -n "$verbose" && AC_MSG_RESULT(... -$cf_opt)
2879                         case $cf_opt in
2880                         (Winline)
2881                                 case $GCC_VERSION in
2882                                 ([[34]].*)
2883                                         CF_VERBOSE(feature is broken in gcc $GCC_VERSION)
2884                                         continue;;
2885                                 esac
2886                                 ;;
2887                         (Wpointer-arith)
2888                                 case $GCC_VERSION in
2889                                 ([[12]].*)
2890                                         CF_VERBOSE(feature is broken in gcc $GCC_VERSION)
2891                                         continue;;
2892                                 esac
2893                                 ;;
2894                         esac
2895                         EXTRA_CFLAGS="$EXTRA_CFLAGS -$cf_opt"
2896                 fi
2897         done
2898         CFLAGS="$cf_save_CFLAGS"
2899 fi
2900 rm -rf conftest*
2901
2902 AC_SUBST(EXTRA_CFLAGS)
2903 ])dnl
2904 dnl ---------------------------------------------------------------------------
2905 dnl CF_GETOPT_HEADER version: 6 updated: 2014/07/22 14:45:54
2906 dnl ----------------
2907 dnl Check for getopt's variables which are commonly defined in stdlib.h,
2908 dnl unistd.h or (nonstandard) in getopt.h
2909 AC_DEFUN([CF_GETOPT_HEADER],
2910 [
2911 AC_HAVE_HEADERS(unistd.h getopt.h)
2912 AC_CACHE_CHECK(for header declaring getopt variables,cf_cv_getopt_header,[
2913 cf_cv_getopt_header=none
2914 for cf_header in stdio.h stdlib.h unistd.h getopt.h
2915 do
2916 AC_TRY_COMPILE([
2917 #include <$cf_header>],
2918 [int x = optind; char *y = optarg],
2919 [cf_cv_getopt_header=$cf_header
2920  break])
2921 done
2922 ])
2923 if test $cf_cv_getopt_header != none ; then
2924         AC_DEFINE(HAVE_GETOPT_HEADER,1,[Define to 1 if getopt variables are declared in header])
2925 fi
2926 if test $cf_cv_getopt_header = getopt.h ; then
2927         AC_DEFINE(NEED_GETOPT_H,1,[Define to 1 if we must include getopt.h])
2928 fi
2929 ])dnl
2930 dnl ---------------------------------------------------------------------------
2931 dnl CF_GNATPREP_OPT_T version: 1 updated: 2014/08/02 18:37:25
2932 dnl -----------------
2933 AC_DEFUN([CF_GNATPREP_OPT_T],[
2934 AC_CACHE_CHECK(if GNATPREP supports -T option,cf_cv_gnatprep_opt_t,[
2935 cf_cv_gnatprep_opt_t=no
2936 gnatprep -T 2>/dev/null >/dev/null && cf_cv_gnatprep_opt_t=yes
2937 ])
2938 test "$cf_cv_gnatprep_opt_t" = yes && GNATPREP_OPTS="-T $GNATPREP_OPTS"
2939 AC_SUBST(GNATPREP_OPTS)
2940 ])dnl
2941 dnl ---------------------------------------------------------------------------
2942 dnl CF_GNAT_GENERICS version: 6 updated: 2020/07/04 19:30:27
2943 dnl ----------------
2944 AC_DEFUN([CF_GNAT_GENERICS],
2945 [
2946 AC_REQUIRE([CF_GNAT_VERSION])
2947
2948 AC_MSG_CHECKING(if GNAT supports generics)
2949 case $cf_cv_gnat_version in
2950 (3.1[[1-9]]*|3.[[2-9]]*|[[4-9]].*|[[1-9]][[0-9]].[[0-9]]*|20[[0-9]][[0-9]])
2951         cf_gnat_generics=yes
2952         ;;
2953 (*)
2954         cf_gnat_generics=no
2955         ;;
2956 esac
2957 AC_MSG_RESULT($cf_gnat_generics)
2958
2959 if test "$cf_gnat_generics" = yes
2960 then
2961         cf_compile_generics=generics
2962         cf_generic_objects="\${GENOBJS}"
2963 else
2964         cf_compile_generics=
2965         cf_generic_objects=
2966 fi
2967
2968 AC_SUBST(cf_compile_generics)
2969 AC_SUBST(cf_generic_objects)
2970 ])dnl
2971 dnl ---------------------------------------------------------------------------
2972 dnl CF_GNAT_PROJECTS version: 10 updated: 2019/12/31 08:53:54
2973 dnl ----------------
2974 dnl GNAT projects are configured with ".gpr" project files.
2975 dnl GNAT libraries are a further development, using the project feature.
2976 AC_DEFUN([CF_GNAT_PROJECTS],
2977 [
2978 AC_REQUIRE([CF_GNAT_VERSION])
2979 AC_REQUIRE([CF_DISABLE_GNAT_PROJECTS])
2980
2981 cf_gnat_libraries=no
2982 cf_gnat_projects=no
2983
2984 if test "$enable_gnat_projects" != no ; then
2985 AC_MSG_CHECKING(if GNAT supports project files)
2986 case $cf_cv_gnat_version in
2987 (3.[[0-9]]*)
2988         ;;
2989 (*)
2990         case $cf_cv_system_name in
2991         (cygwin*|msys*)
2992                 ;;
2993         (*)
2994                 rm -rf conftest* *~conftest*
2995                 if mkdir conftest.src conftest.bin conftest.lib
2996                 then
2997                         cd conftest.src
2998                         rm -rf conftest* *~conftest*
2999                         cat >>library.gpr <<CF_EOF
3000 project Library is
3001   Kind := External ("LIB_KIND");
3002   for Library_Name use "ConfTest";
3003   for Object_Dir use ".";
3004   for Library_ALI_Dir use External("LIBRARY_DIR");
3005   for Library_Version use External ("SONAME");
3006   for Library_Kind use Kind;
3007   for Library_Dir use External("BUILD_DIR");
3008   Source_Dir := External ("SOURCE_DIR");
3009   for Source_Dirs use (Source_Dir);
3010 end Library;
3011 CF_EOF
3012                         cat >>confpackage.ads <<CF_EOF
3013 package ConfPackage is
3014    procedure conftest;
3015 end ConfPackage;
3016 CF_EOF
3017                         cat >>confpackage.adb <<CF_EOF
3018 with Text_IO;
3019 package body ConfPackage is
3020    procedure conftest is
3021    begin
3022       Text_IO.Put ("Hello World");
3023       Text_IO.New_Line;
3024    end conftest;
3025 end ConfPackage;
3026 CF_EOF
3027                         if ( $cf_ada_make $ADAFLAGS \
3028                                         -Plibrary.gpr \
3029                                         -XBUILD_DIR=`cd ../conftest.bin;pwd` \
3030                                         -XLIBRARY_DIR=`cd ../conftest.lib;pwd` \
3031                                         -XSOURCE_DIR=`pwd` \
3032                                         -XSONAME=libConfTest.so.1 \
3033                                         -XLIB_KIND=static 1>&AC_FD_CC 2>&1 ) ; then
3034                                 cf_gnat_projects=yes
3035                         fi
3036                         cd ..
3037                 fi
3038                 if test -f conftest.lib/confpackage.ali
3039                 then
3040                         cf_gnat_libraries=yes
3041                 fi
3042                 rm -rf conftest* *~conftest*
3043                 ;;
3044         esac
3045         ;;
3046 esac
3047 AC_MSG_RESULT($cf_gnat_projects)
3048 fi # enable_gnat_projects
3049
3050 if test $cf_gnat_projects = yes
3051 then
3052         AC_MSG_CHECKING(if GNAT supports libraries)
3053         AC_MSG_RESULT($cf_gnat_libraries)
3054 fi
3055
3056 if test "$cf_gnat_projects" = yes
3057 then
3058         USE_OLD_MAKERULES="#"
3059         USE_GNAT_PROJECTS=""
3060 else
3061         USE_OLD_MAKERULES=""
3062         USE_GNAT_PROJECTS="#"
3063 fi
3064
3065 if test "$cf_gnat_libraries" = yes
3066 then
3067         USE_GNAT_LIBRARIES=""
3068 else
3069         USE_GNAT_LIBRARIES="#"
3070 fi
3071
3072 AC_SUBST(USE_OLD_MAKERULES)
3073 AC_SUBST(USE_GNAT_PROJECTS)
3074 AC_SUBST(USE_GNAT_LIBRARIES)
3075 ])dnl
3076 dnl ---------------------------------------------------------------------------
3077 dnl CF_GNAT_SIGINT version: 1 updated: 2011/03/27 20:07:59
3078 dnl --------------
3079 dnl Check if gnat supports SIGINT, and presumably tasking.  For the latter, it
3080 dnl is noted that gnat may compile a tasking unit even for configurations which
3081 dnl fail at runtime.
3082 AC_DEFUN([CF_GNAT_SIGINT],[
3083 AC_CACHE_CHECK(if GNAT supports SIGINT,cf_cv_gnat_sigint,[
3084 CF_GNAT_TRY_LINK([with Ada.Interrupts.Names;
3085
3086 package ConfTest is
3087
3088    pragma Warnings (Off);  --  the next pragma exists since 3.11p
3089    pragma Unreserve_All_Interrupts;
3090    pragma Warnings (On);
3091
3092    protected Process is
3093       procedure Stop;
3094       function Continue return Boolean;
3095       pragma Attach_Handler (Stop, Ada.Interrupts.Names.SIGINT);
3096    private
3097       Done : Boolean := False;
3098    end Process;
3099
3100 end ConfTest;],
3101 [package body ConfTest is
3102    protected body Process is
3103       procedure Stop is
3104       begin
3105          Done := True;
3106       end Stop;
3107       function Continue return Boolean is
3108       begin
3109          return not Done;
3110       end Continue;
3111    end Process;
3112 end ConfTest;],
3113         [cf_cv_gnat_sigint=yes],
3114         [cf_cv_gnat_sigint=no])])
3115
3116 if test $cf_cv_gnat_sigint = yes ; then
3117         USE_GNAT_SIGINT=""
3118 else
3119         USE_GNAT_SIGINT="#"
3120 fi
3121 AC_SUBST(USE_GNAT_SIGINT)
3122 ])dnl
3123 dnl ---------------------------------------------------------------------------
3124 dnl CF_GNAT_TRY_LINK version: 3 updated: 2011/03/19 14:47:45
3125 dnl ----------------
3126 dnl Verify that a test program compiles/links with GNAT.
3127 dnl $cf_ada_make is set to the program that compiles/links
3128 dnl $ADAFLAGS may be set to the GNAT flags.
3129 dnl
3130 dnl $1 is the text of the spec
3131 dnl $2 is the text of the body
3132 dnl $3 is the shell command to execute if successful
3133 dnl $4 is the shell command to execute if not successful
3134 AC_DEFUN([CF_GNAT_TRY_LINK],
3135 [
3136 rm -rf conftest* *~conftest*
3137 cat >>conftest.ads <<CF_EOF
3138 $1
3139 CF_EOF
3140 cat >>conftest.adb <<CF_EOF
3141 $2
3142 CF_EOF
3143 if ( $cf_ada_make $ADAFLAGS conftest 1>&AC_FD_CC 2>&1 ) ; then
3144 ifelse($3,,      :,[      $3])
3145 ifelse($4,,,[else
3146    $4])
3147 fi
3148 rm -rf conftest* *~conftest*
3149 ])dnl
3150 dnl ---------------------------------------------------------------------------
3151 dnl CF_GNAT_TRY_RUN version: 5 updated: 2011/03/19 14:47:45
3152 dnl ---------------
3153 dnl Verify that a test program compiles and runs with GNAT
3154 dnl $cf_ada_make is set to the program that compiles/links
3155 dnl $ADAFLAGS may be set to the GNAT flags.
3156 dnl
3157 dnl $1 is the text of the spec
3158 dnl $2 is the text of the body
3159 dnl $3 is the shell command to execute if successful
3160 dnl $4 is the shell command to execute if not successful
3161 AC_DEFUN([CF_GNAT_TRY_RUN],
3162 [
3163 rm -rf conftest* *~conftest*
3164 cat >>conftest.ads <<CF_EOF
3165 $1
3166 CF_EOF
3167 cat >>conftest.adb <<CF_EOF
3168 $2
3169 CF_EOF
3170 if ( $cf_ada_make $ADAFLAGS conftest 1>&AC_FD_CC 2>&1 ) ; then
3171    if ( ./conftest 1>&AC_FD_CC 2>&1 ) ; then
3172 ifelse($3,,      :,[      $3])
3173 ifelse($4,,,[   else
3174       $4])
3175    fi
3176 ifelse($4,,,[else
3177    $4])
3178 fi
3179 rm -rf conftest* *~conftest*
3180 ])dnl
3181 dnl ---------------------------------------------------------------------------
3182 dnl CF_GNAT_VERSION version: 22 updated: 2019/12/31 08:53:54
3183 dnl ---------------
3184 dnl $1 = cache variable to update
3185 dnl $2 = program name
3186 dnl Verify version of GNAT or related tool
3187 AC_DEFUN([CF_GNAT_VERSION],
3188 [
3189 AC_CACHE_CHECK(for ifelse($2,,gnat,$2) version, cf_cv_gnat_version,[
3190 cf_cv_gnat_version=`ifelse($2,,${cf_ada_make:-gnatmake},$2) --version 2>&1 | \
3191         grep '[[0-9]].[[0-9]][[0-9]]*' |\
3192         sed -e '2,$d' -e 's/[[^0-9 \.]]//g' -e 's/^[[ ]]*//' -e 's/ .*//'`
3193 ])
3194 test -z "$cf_cv_gnat_version" && cf_cv_gnat_version=no
3195 ifelse($1,,,[eval $1=$cf_cv_gnat_version; unset cf_cv_gnat_version])
3196 ])dnl
3197 dnl ---------------------------------------------------------------------------
3198 dnl CF_GNU_SOURCE version: 10 updated: 2018/12/10 20:09:41
3199 dnl -------------
3200 dnl Check if we must define _GNU_SOURCE to get a reasonable value for
3201 dnl _XOPEN_SOURCE, upon which many POSIX definitions depend.  This is a defect
3202 dnl (or misfeature) of glibc2, which breaks portability of many applications,
3203 dnl since it is interwoven with GNU extensions.
3204 dnl
3205 dnl Well, yes we could work around it...
3206 dnl
3207 dnl Parameters:
3208 dnl     $1 is the nominal value for _XOPEN_SOURCE
3209 AC_DEFUN([CF_GNU_SOURCE],
3210 [
3211 cf_gnu_xopen_source=ifelse($1,,500,$1)
3212
3213 AC_CACHE_CHECK(if this is the GNU C library,cf_cv_gnu_library,[
3214 AC_TRY_COMPILE([#include <sys/types.h>],[
3215         #if __GLIBC__ > 0 && __GLIBC_MINOR__ >= 0
3216                 return 0;
3217         #elif __NEWLIB__ > 0 && __NEWLIB_MINOR__ >= 0
3218                 return 0;
3219         #else
3220         #       error not GNU C library
3221         #endif],
3222         [cf_cv_gnu_library=yes],
3223         [cf_cv_gnu_library=no])
3224 ])
3225
3226 if test x$cf_cv_gnu_library = xyes; then
3227
3228         # With glibc 2.19 (13 years after this check was begun), _DEFAULT_SOURCE
3229         # was changed to help a little.  newlib incorporated the change about 4
3230         # years later.
3231         AC_CACHE_CHECK(if _DEFAULT_SOURCE can be used as a basis,cf_cv_gnu_library_219,[
3232                 cf_save="$CPPFLAGS"
3233                 CF_APPEND_TEXT(CPPFLAGS,-D_DEFAULT_SOURCE)
3234                 AC_TRY_COMPILE([#include <sys/types.h>],[
3235                         #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 19) || (__GLIBC__ > 2)
3236                                 return 0;
3237                         #elif (__NEWLIB__ == 2 && __NEWLIB_MINOR__ >= 4) || (__GLIBC__ > 3)
3238                                 return 0;
3239                         #else
3240                         #       error GNU C library __GLIBC__.__GLIBC_MINOR__ is too old
3241                         #endif],
3242                         [cf_cv_gnu_library_219=yes],
3243                         [cf_cv_gnu_library_219=no])
3244                 CPPFLAGS="$cf_save"
3245         ])
3246
3247         if test "x$cf_cv_gnu_library_219" = xyes; then
3248                 cf_save="$CPPFLAGS"
3249                 AC_CACHE_CHECK(if _XOPEN_SOURCE=$cf_gnu_xopen_source works with _DEFAULT_SOURCE,cf_cv_gnu_dftsrc_219,[
3250                         CF_ADD_CFLAGS(-D_DEFAULT_SOURCE -D_XOPEN_SOURCE=$cf_gnu_xopen_source)
3251                         AC_TRY_COMPILE([
3252                                 #include <limits.h>
3253                                 #include <sys/types.h>
3254                                 ],[
3255                                 #if (_XOPEN_SOURCE >= $cf_gnu_xopen_source) && (MB_LEN_MAX > 1)
3256                                         return 0;
3257                                 #else
3258                                 #       error GNU C library is too old
3259                                 #endif],
3260                                 [cf_cv_gnu_dftsrc_219=yes],
3261                                 [cf_cv_gnu_dftsrc_219=no])
3262                         ])
3263                 test "x$cf_cv_gnu_dftsrc_219" = "xyes" || CPPFLAGS="$cf_save"
3264         else
3265                 cf_cv_gnu_dftsrc_219=maybe
3266         fi
3267
3268         if test "x$cf_cv_gnu_dftsrc_219" != xyes; then
3269
3270                 AC_CACHE_CHECK(if we must define _GNU_SOURCE,cf_cv_gnu_source,[
3271                 AC_TRY_COMPILE([#include <sys/types.h>],[
3272                         #ifndef _XOPEN_SOURCE
3273                         #error  expected _XOPEN_SOURCE to be defined
3274                         #endif],
3275                         [cf_cv_gnu_source=no],
3276                         [cf_save="$CPPFLAGS"
3277                          CF_ADD_CFLAGS(-D_GNU_SOURCE)
3278                          AC_TRY_COMPILE([#include <sys/types.h>],[
3279                                 #ifdef _XOPEN_SOURCE
3280                                 #error  expected _XOPEN_SOURCE to be undefined
3281                                 #endif],
3282                                 [cf_cv_gnu_source=no],
3283                                 [cf_cv_gnu_source=yes])
3284                         CPPFLAGS="$cf_save"
3285                         ])
3286                 ])
3287
3288                 if test "$cf_cv_gnu_source" = yes
3289                 then
3290                 AC_CACHE_CHECK(if we should also define _DEFAULT_SOURCE,cf_cv_default_source,[
3291                         CF_APPEND_TEXT(CPPFLAGS,-D_GNU_SOURCE)
3292                         AC_TRY_COMPILE([#include <sys/types.h>],[
3293                                 #ifdef _DEFAULT_SOURCE
3294                                 #error  expected _DEFAULT_SOURCE to be undefined
3295                                 #endif],
3296                                 [cf_cv_default_source=no],
3297                                 [cf_cv_default_source=yes])
3298                         ])
3299                         if test "$cf_cv_default_source" = yes
3300                         then
3301                                 CF_APPEND_TEXT(CPPFLAGS,-D_DEFAULT_SOURCE)
3302                         fi
3303                 fi
3304         fi
3305
3306 fi
3307 ])dnl
3308 dnl ---------------------------------------------------------------------------
3309 dnl CF_GPP_LIBRARY version: 12 updated: 2015/04/17 21:13:04
3310 dnl --------------
3311 dnl If we're trying to use g++, test if libg++ is installed (a rather common
3312 dnl problem :-).  If we have the compiler but no library, we'll be able to
3313 dnl configure, but won't be able to build the c++ demo program.
3314 AC_DEFUN([CF_GPP_LIBRARY],
3315 [
3316 cf_cxx_library=unknown
3317 case $cf_cv_system_name in
3318 (os2*)
3319         cf_gpp_libname=gpp
3320         ;;
3321 (*)
3322         cf_gpp_libname=g++
3323         ;;
3324 esac
3325 if test "$GXX" = yes; then
3326         AC_MSG_CHECKING([for lib$cf_gpp_libname])
3327         cf_save="$LIBS"
3328         CF_ADD_LIB($cf_gpp_libname)
3329         AC_TRY_LINK([
3330 #include <$cf_gpp_libname/builtin.h>
3331         ],
3332         [two_arg_error_handler_t foo2 = lib_error_handler],
3333         [cf_cxx_library=yes
3334          CF_ADD_LIB($cf_gpp_libname,CXXLIBS)
3335          if test "$cf_gpp_libname" = cpp ; then
3336             AC_DEFINE(HAVE_GPP_BUILTIN_H,1,[Define to 1 if we have gpp builtin.h])
3337          else
3338             AC_DEFINE(HAVE_GXX_BUILTIN_H,1,[Define to 1 if we have g++ builtin.h])
3339          fi],
3340         [AC_TRY_LINK([
3341 #include <builtin.h>
3342         ],
3343         [two_arg_error_handler_t foo2 = lib_error_handler],
3344         [cf_cxx_library=yes
3345          CF_ADD_LIB($cf_gpp_libname,CXXLIBS)
3346          AC_DEFINE(HAVE_BUILTIN_H,1,[Define to 1 if we have builtin.h])],
3347         [cf_cxx_library=no])])
3348         LIBS="$cf_save"
3349         AC_MSG_RESULT($cf_cxx_library)
3350 fi
3351 ])dnl
3352 dnl ---------------------------------------------------------------------------
3353 dnl CF_GXX_VERSION version: 8 updated: 2017/02/11 14:48:57
3354 dnl --------------
3355 dnl Check for version of g++
3356 AC_DEFUN([CF_GXX_VERSION],[
3357 AC_REQUIRE([AC_PROG_CPP])
3358 GXX_VERSION=none
3359 if test "$GXX" = yes; then
3360         AC_MSG_CHECKING(version of ${CXX:-g++})
3361         GXX_VERSION="`${CXX:-g++} --version| sed -e '2,$d' -e 's/^.*(GCC) //' -e 's/^[[^0-9.]]*//' -e 's/[[^0-9.]].*//'`"
3362         if test -z "$GXX_VERSION"
3363         then
3364                 GXX_VERSION=unknown
3365                 GXX=no
3366         fi
3367         AC_MSG_RESULT($GXX_VERSION)
3368 fi
3369 ])dnl
3370 dnl ---------------------------------------------------------------------------
3371 dnl CF_GXX_WARNINGS version: 9 updated: 2015/04/17 21:13:04
3372 dnl ---------------
3373 dnl Check if the compiler supports useful warning options.
3374 dnl
3375 dnl Most of gcc's options apply to g++, except:
3376 dnl     -Wbad-function-cast
3377 dnl     -Wmissing-declarations
3378 dnl     -Wnested-externs
3379 dnl
3380 dnl Omit a few (for now):
3381 dnl     -Winline
3382 dnl
3383 dnl Parameter:
3384 dnl     $1 is an optional list of g++ warning flags that a particular
3385 dnl             application might want to use, e.g., "no-unused" for
3386 dnl             -Wno-unused
3387 dnl Special:
3388 dnl     If $with_ext_const is "yes", add a check for -Wwrite-strings
3389 dnl
3390 AC_DEFUN([CF_GXX_WARNINGS],
3391 [
3392
3393 CF_INTEL_COMPILER(GXX,INTEL_CPLUSPLUS,CXXFLAGS)
3394 CF_CLANG_COMPILER(GXX,CLANG_CPLUSPLUS,CXXFLAGS)
3395
3396 AC_REQUIRE([CF_GXX_VERSION])
3397
3398 AC_LANG_SAVE
3399 AC_LANG_CPLUSPLUS
3400
3401 cat > conftest.$ac_ext <<EOF
3402 #line __oline__ "configure"
3403 int main(int argc, char *argv[[]]) { return (argv[[argc-1]] == 0) ; }
3404 EOF
3405
3406 if test "$INTEL_CPLUSPLUS" = yes
3407 then
3408 # The "-wdXXX" options suppress warnings:
3409 # remark #1419: external declaration in primary source file
3410 # remark #1682: implicit conversion of a 64-bit integral type to a smaller integral type (potential portability problem)
3411 # remark #1683: explicit conversion of a 64-bit integral type to a smaller integral type (potential portability problem)
3412 # remark #1684: conversion from pointer to same-sized integral type (potential portability problem)
3413 # remark #193: zero used for undefined preprocessing identifier
3414 # remark #593: variable "curs_sb_left_arrow" was set but never used
3415 # remark #810: conversion from "int" to "Dimension={unsigned short}" may lose significant bits
3416 # remark #869: parameter "tw" was never referenced
3417 # remark #981: operands are evaluated in unspecified order
3418 # warning #269: invalid format string conversion
3419
3420         AC_CHECKING([for $CC warning options])
3421         cf_save_CXXFLAGS="$CXXFLAGS"
3422         EXTRA_CXXFLAGS="-Wall"
3423         for cf_opt in \
3424                 wd1419 \
3425                 wd1682 \
3426                 wd1683 \
3427                 wd1684 \
3428                 wd193 \
3429                 wd279 \
3430                 wd593 \
3431                 wd810 \
3432                 wd869 \
3433                 wd981
3434         do
3435                 CXXFLAGS="$cf_save_CXXFLAGS $EXTRA_CXXFLAGS -$cf_opt"
3436                 if AC_TRY_EVAL(ac_compile); then
3437                         test -n "$verbose" && AC_MSG_RESULT(... -$cf_opt)
3438                         EXTRA_CXXFLAGS="$EXTRA_CXXFLAGS -$cf_opt"
3439                 fi
3440         done
3441         CXXFLAGS="$cf_save_CXXFLAGS"
3442
3443 elif test "$GXX" = yes
3444 then
3445         AC_CHECKING([for $CXX warning options])
3446         cf_save_CXXFLAGS="$CXXFLAGS"
3447         EXTRA_CXXFLAGS="-W -Wall"
3448         cf_gxx_extra_warnings=""
3449         test "$with_ext_const" = yes && cf_gxx_extra_warnings="Wwrite-strings"
3450         case "$GCC_VERSION" in
3451         ([[1-2]].*)
3452                 ;;
3453         (*)
3454                 cf_gxx_extra_warnings="$cf_gxx_extra_warnings Weffc++"
3455                 ;;
3456         esac
3457         for cf_opt in \
3458                 Wabi \
3459                 fabi-version=0 \
3460                 Wextra \
3461                 Wignored-qualifiers \
3462                 Wlogical-op \
3463                 Woverloaded-virtual \
3464                 Wsign-promo \
3465                 Wsynth \
3466                 Wold-style-cast \
3467                 Wcast-align \
3468                 Wcast-qual \
3469                 Wpointer-arith \
3470                 Wshadow \
3471                 Wundef $cf_gxx_extra_warnings $1
3472         do
3473                 CXXFLAGS="$cf_save_CXXFLAGS $EXTRA_CXXFLAGS -Werror -$cf_opt"
3474                 if AC_TRY_EVAL(ac_compile); then
3475                         test -n "$verbose" && AC_MSG_RESULT(... -$cf_opt)
3476                         EXTRA_CXXFLAGS="$EXTRA_CXXFLAGS -$cf_opt"
3477                 else
3478                         test -n "$verbose" && AC_MSG_RESULT(... no -$cf_opt)
3479                 fi
3480         done
3481         CXXFLAGS="$cf_save_CXXFLAGS"
3482 fi
3483
3484 rm -rf conftest*
3485 AC_LANG_RESTORE
3486 AC_SUBST(EXTRA_CXXFLAGS)
3487 ])dnl
3488 dnl ---------------------------------------------------------------------------
3489 dnl CF_HASHED_DB version: 7 updated: 2015/04/18 08:56:57
3490 dnl ------------
3491 dnl Look for an instance of the Berkeley hashed database.
3492 dnl
3493 dnl $1 = optional parameter, to specify install-prefix for the database.
3494 AC_DEFUN([CF_HASHED_DB],
3495 [
3496 ifelse([$1],,,[
3497 case $1 in
3498 (yes|*able*)
3499         ;;
3500 (*)
3501         if test -d "$1" ; then
3502                 CF_ADD_INCDIR($1/include)
3503                 CF_ADD_LIBDIR($1/lib)
3504         else
3505                 case "$1" in
3506                 (./*|../*|/*)
3507                         AC_MSG_WARN(no such directory $1)
3508                         ;;
3509                 (*)
3510                         CF_FIND_SUB_INCDIR($1)
3511                         CF_FIND_SUB_LIBDIR($1)
3512                         ;;
3513                 esac
3514         fi
3515 esac
3516 ])
3517 AC_CHECK_HEADER(db.h,[
3518 CF_HASHED_DB_VERSION
3519 if test "$cf_cv_hashed_db_version" = unknown ; then
3520         AC_MSG_ERROR(Cannot determine version of db)
3521 else
3522         CF_HASHED_DB_LIBS
3523         if test "$cf_cv_hashed_db_libs" = unknown ; then
3524                 AC_MSG_ERROR(Cannot determine library for db)
3525         elif test "$cf_cv_hashed_db_libs" != default ; then
3526                 CF_ADD_LIB($cf_cv_hashed_db_libs)
3527         fi
3528 fi
3529 ],[
3530         AC_MSG_ERROR(Cannot find db.h)
3531 ])
3532 ])dnl
3533 dnl ---------------------------------------------------------------------------
3534 dnl CF_HASHED_DB_LIBS version: 9 updated: 2010/05/29 16:31:02
3535 dnl -----------------
3536 dnl Given that we have the header and version for hashed database, find the
3537 dnl library information.
3538 AC_DEFUN([CF_HASHED_DB_LIBS],
3539 [
3540 AC_CACHE_CHECK(for db libraries, cf_cv_hashed_db_libs,[
3541 cf_cv_hashed_db_libs=unknown
3542 for cf_db_libs in "" db$cf_cv_hashed_db_version db-$cf_cv_hashed_db_version db ''
3543 do
3544         cf_save_libs="$LIBS"
3545         if test -n "$cf_db_libs"; then
3546                 CF_ADD_LIB($cf_db_libs)
3547         fi
3548         CF_MSG_LOG(checking for library "$cf_db_libs")
3549         AC_TRY_LINK([
3550 $ac_includes_default
3551 #include <db.h>
3552 ],[
3553         char *path = "/tmp/foo";
3554 #ifdef DB_VERSION_MAJOR
3555 #if DB_VERSION_MAJOR >= 4
3556         DB *result = 0;
3557         db_create(&result, NULL, 0);
3558         result->open(result,
3559                 NULL,
3560                 path,
3561                 path,
3562                 DB_HASH,
3563                 DB_CREATE,
3564                 0644);
3565 #elif DB_VERSION_MAJOR >= 3
3566         DB *result = 0;
3567         db_create(&result, NULL, 0);
3568         result->open(result,
3569                 path,
3570                 path,
3571                 DB_HASH,
3572                 DB_CREATE,
3573                 0644);
3574 #elif DB_VERSION_MAJOR >= 2
3575         DB *result = 0;
3576         db_open(path,
3577                 DB_HASH,
3578                 DB_CREATE,
3579                 0644,
3580                 (DB_ENV *) 0,
3581                 (DB_INFO *) 0,
3582                 &result);
3583 #endif /* DB_VERSION_MAJOR */
3584 #else
3585         DB *result = dbopen(path,
3586                      2,
3587                      0644,
3588                      DB_HASH,
3589                      0);
3590 #endif
3591         ${cf_cv_main_return:-return}(result != 0)
3592 ],[
3593         if test -n "$cf_db_libs" ; then
3594                 cf_cv_hashed_db_libs=$cf_db_libs
3595         else
3596                 cf_cv_hashed_db_libs=default
3597         fi
3598         LIBS="$cf_save_libs"
3599         break
3600 ])
3601         LIBS="$cf_save_libs"
3602 done
3603 ])
3604 ])dnl
3605 dnl ---------------------------------------------------------------------------
3606 dnl CF_HASHED_DB_VERSION version: 4 updated: 2014/04/12 16:47:01
3607 dnl --------------------
3608 dnl Given that we have the header file for hashed database, find the version
3609 dnl information.
3610 AC_DEFUN([CF_HASHED_DB_VERSION],
3611 [
3612 AC_CACHE_CHECK(for version of db, cf_cv_hashed_db_version,[
3613 cf_cv_hashed_db_version=unknown
3614
3615 for cf_db_version in 1 2 3 4 5 6
3616 do
3617         CF_MSG_LOG(checking for db version $cf_db_version)
3618         AC_TRY_COMPILE([
3619 $ac_includes_default
3620 #include <db.h>
3621
3622 #ifdef DB_VERSION_MAJOR
3623         /* db2 (DB_VERSION_MAJOR=2) has also DB_VERSION_MINOR, tested with 7 */
3624 #if $cf_db_version == DB_VERSION_MAJOR
3625         /* ok */
3626 #else
3627         make an error
3628 #endif
3629 #else
3630 #if $cf_db_version == 1
3631         /* ok: assuming this is DB 1.8.5 */
3632 #else
3633         make an error
3634 #endif
3635 #endif
3636 ],[DBT *foo = 0],[
3637         cf_cv_hashed_db_version=$cf_db_version
3638         break
3639         ])
3640 done
3641 ])
3642 ])dnl
3643 dnl ---------------------------------------------------------------------------
3644 dnl CF_HEADER_PATH version: 13 updated: 2015/04/15 19:08:48
3645 dnl --------------
3646 dnl Construct a search-list of directories for a nonstandard header-file
3647 dnl
3648 dnl Parameters
3649 dnl     $1 = the variable to return as result
3650 dnl     $2 = the package name
3651 AC_DEFUN([CF_HEADER_PATH],
3652 [
3653 $1=
3654
3655 # collect the current set of include-directories from compiler flags
3656 cf_header_path_list=""
3657 if test -n "${CFLAGS}${CPPFLAGS}" ; then
3658         for cf_header_path in $CPPFLAGS $CFLAGS
3659         do
3660                 case $cf_header_path in
3661                 (-I*)
3662                         cf_header_path=`echo ".$cf_header_path" |sed -e 's/^...//' -e 's,/include$,,'`
3663                         CF_ADD_SUBDIR_PATH($1,$2,include,$cf_header_path,NONE)
3664                         cf_header_path_list="$cf_header_path_list [$]$1"
3665                         ;;
3666                 esac
3667         done
3668 fi
3669
3670 # add the variations for the package we are looking for
3671 CF_SUBDIR_PATH($1,$2,include)
3672
3673 test "$includedir" != NONE && \
3674 test "$includedir" != "/usr/include" && \
3675 test -d "$includedir" && {
3676         test -d $includedir &&    $1="[$]$1 $includedir"
3677         test -d $includedir/$2 && $1="[$]$1 $includedir/$2"
3678 }
3679
3680 test "$oldincludedir" != NONE && \
3681 test "$oldincludedir" != "/usr/include" && \
3682 test -d "$oldincludedir" && {
3683         test -d $oldincludedir    && $1="[$]$1 $oldincludedir"
3684         test -d $oldincludedir/$2 && $1="[$]$1 $oldincludedir/$2"
3685 }
3686
3687 $1="[$]$1 $cf_header_path_list"
3688 ])dnl
3689 dnl ---------------------------------------------------------------------------
3690 dnl CF_HELP_MESSAGE version: 4 updated: 2019/12/31 08:53:54
3691 dnl ---------------
3692 dnl Insert text into the help-message, for readability, from AC_ARG_WITH.
3693 AC_DEFUN([CF_HELP_MESSAGE],
3694 [CF_ACVERSION_CHECK(2.53,[],[
3695 AC_DIVERT_HELP($1)])dnl
3696 ])dnl
3697 dnl ---------------------------------------------------------------------------
3698 dnl CF_INCLUDE_DIRS version: 10 updated: 2014/09/19 20:58:42
3699 dnl ---------------
3700 dnl Construct the list of include-options according to whether we're building
3701 dnl in the source directory or using '--srcdir=DIR' option.
3702 AC_DEFUN([CF_INCLUDE_DIRS],
3703 [
3704 if test "$srcdir" != "."; then
3705         CPPFLAGS="-I\${srcdir}/../include $CPPFLAGS"
3706 fi
3707 CPPFLAGS="-I../include $CPPFLAGS"
3708 if test "$srcdir" != "."; then
3709         CPPFLAGS="-I\${srcdir} $CPPFLAGS"
3710 fi
3711 CPPFLAGS="-I. $CPPFLAGS"
3712 AC_SUBST(CPPFLAGS)
3713 ])dnl
3714 dnl ---------------------------------------------------------------------------
3715 dnl CF_INSTALL_OPTS version: 2 updated: 2018/08/18 12:19:21
3716 dnl ---------------
3717 dnl prompt for/fill-in useful install-program options
3718 AC_DEFUN([CF_INSTALL_OPTS],
3719 [
3720 CF_INSTALL_OPT_S
3721 CF_INSTALL_OPT_P
3722 CF_INSTALL_OPT_O
3723 ])dnl
3724 dnl ---------------------------------------------------------------------------
3725 dnl CF_INSTALL_OPT_O version: 2 updated: 2015/05/15 19:45:35
3726 dnl ----------------
3727 dnl Almost all "install" programs default to the current user's ownership.
3728 dnl Almost - MINIX is an exception.
3729 AC_DEFUN([CF_INSTALL_OPT_O],
3730 [
3731 AC_MSG_CHECKING(if install needs to be told about ownership)
3732 case `$ac_config_guess` in
3733 (*minix)
3734         with_install_o=yes
3735         ;;
3736 (*)
3737         with_install_o=no
3738         ;;
3739 esac
3740
3741 AC_MSG_RESULT($with_install_o)
3742 if test "x$with_install_o" = xyes
3743 then
3744         INSTALL_OPT_O=`id root|sed -e 's/uid=[[0-9]]*(/ -o /' -e 's/gid=[[0-9]]*(/ -g /' -e 's/ [[^=[:space:]]][[^=[:space:]]]*=.*/ /' -e 's/)//g'`
3745 else
3746         INSTALL_OPT_O=
3747 fi
3748
3749 AC_SUBST(INSTALL_OPT_O)
3750 ])dnl
3751 dnl ---------------------------------------------------------------------------
3752 dnl CF_INSTALL_OPT_P version: 1 updated: 2018/08/18 12:19:21
3753 dnl ----------------
3754 dnl Some install-programs accept a "-p" option to preserve file modification
3755 dnl timestamps.  That can be useful as an install option, as well as a way to
3756 dnl avoid the need for ranlib after copying a static archive.
3757 AC_DEFUN([CF_INSTALL_OPT_P],
3758 [
3759 : ${INSTALL:=install}
3760 AC_CACHE_CHECK(if install accepts -p option, cf_cv_install_p,[