1 dnl***************************************************************************
2 dnl Copyright 2018-2020,2021 Thomas E. Dickey *
3 dnl Copyright 2010-2017,2018 Free Software Foundation, Inc. *
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: *
13 dnl The above copyright notice and this permission notice shall be included *
14 dnl in all copies or substantial portions of the Software. *
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. *
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 *
28 dnl***************************************************************************
30 dnl Author: Thomas E. Dickey
32 dnl $Id: aclocal.m4,v 1.185 2021/10/17 15:16:03 tom Exp $
33 dnl Macros used in NCURSES Ada95 auto-configuration script.
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.
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
43 dnl ---------------------------------------------------------------------------
44 dnl ---------------------------------------------------------------------------
45 dnl CF_ACVERSION_CHECK version: 5 updated: 2014/06/04 19:11:49
46 dnl ------------------
47 dnl Conditionally generate script according to whether we're using a given autoconf.
49 dnl $1 = version to compare against
50 dnl $2 = code to use if AC_ACVERSION is at least as high as $1.
51 dnl $3 = code to use if AC_ACVERSION is older than $1.
52 define([CF_ACVERSION_CHECK],
54 ifdef([AC_ACVERSION], ,[ifdef([AC_AUTOCONF_VERSION],[m4_copy([AC_AUTOCONF_VERSION],[AC_ACVERSION])],[m4_copy([m4_PACKAGE_VERSION],[AC_ACVERSION])])])dnl
55 ifdef([m4_version_compare],
56 [m4_if(m4_version_compare(m4_defn([AC_ACVERSION]), [$1]), -1, [$3], [$2])],
57 [CF_ACVERSION_COMPARE(
58 AC_PREREQ_CANON(AC_PREREQ_SPLIT([$1])),
59 AC_PREREQ_CANON(AC_PREREQ_SPLIT(AC_ACVERSION)), AC_ACVERSION, [$2], [$3])])])dnl
60 dnl ---------------------------------------------------------------------------
61 dnl CF_ACVERSION_COMPARE version: 3 updated: 2012/10/03 18:39:53
62 dnl --------------------
63 dnl CF_ACVERSION_COMPARE(MAJOR1, MINOR1, TERNARY1,
64 dnl MAJOR2, MINOR2, TERNARY2,
65 dnl PRINTABLE2, not FOUND, FOUND)
66 define([CF_ACVERSION_COMPARE],
67 [ifelse(builtin([eval], [$2 < $5]), 1,
68 [ifelse([$8], , ,[$8])],
69 [ifelse([$9], , ,[$9])])])dnl
70 dnl ---------------------------------------------------------------------------
71 dnl CF_ADA_INCLUDE_DIRS version: 8 updated: 2013/10/14 04:24:07
72 dnl -------------------
73 dnl Construct the list of include-options for the C programs in the Ada95
75 AC_DEFUN([CF_ADA_INCLUDE_DIRS],
77 ACPPFLAGS="-I. -I../include -I../../include $ACPPFLAGS"
78 if test "$srcdir" != "."; then
79 ACPPFLAGS="-I\${srcdir}/../../include $ACPPFLAGS"
81 if test "$GCC" != yes; then
82 ACPPFLAGS="$ACPPFLAGS -I\${includedir}"
83 elif test "$includedir" != "/usr/include"; then
84 if test "$includedir" = '${prefix}/include' ; then
85 if test x$prefix != x/usr ; then
86 ACPPFLAGS="$ACPPFLAGS -I\${includedir}"
89 ACPPFLAGS="$ACPPFLAGS -I\${includedir}"
94 dnl ---------------------------------------------------------------------------
95 dnl CF_ADD_ADAFLAGS version: 1 updated: 2010/06/19 15:22:18
97 dnl Add to $ADAFLAGS, which is substituted into makefile and scripts.
98 AC_DEFUN([CF_ADD_ADAFLAGS],[
99 ADAFLAGS="$ADAFLAGS $1"
102 dnl ---------------------------------------------------------------------------
103 dnl CF_ADD_CFLAGS version: 15 updated: 2020/12/31 10:54:15
105 dnl Copy non-preprocessor flags to $CFLAGS, preprocessor flags to $CPPFLAGS
106 dnl $1 = flags to add
107 dnl $2 = if given makes this macro verbose.
109 dnl Put any preprocessor definitions that use quoted strings in $EXTRA_CPPFLAGS,
110 dnl to simplify use of $CPPFLAGS in compiler checks, etc., that are easily
111 dnl confused by the quotes (which require backslashes to keep them usable).
112 AC_DEFUN([CF_ADD_CFLAGS],
117 cf_new_extra_cppflags=
119 for cf_add_cflags in $1
121 case "$cf_fix_cppflags" in
123 case "$cf_add_cflags" in
124 (-undef|-nostdinc*|-I*|-D*|-U*|-E|-P|-C)
125 case "$cf_add_cflags" in
127 cf_tst_cflags=`echo "${cf_add_cflags}" |sed -e 's/^-D[[^=]]*='\''\"[[^"]]*//'`
129 test "x${cf_add_cflags}" != "x${cf_tst_cflags}" \
130 && test -z "${cf_tst_cflags}" \
131 && cf_fix_cppflags=yes
133 if test "$cf_fix_cppflags" = yes ; then
134 CF_APPEND_TEXT(cf_new_extra_cppflags,$cf_add_cflags)
136 elif test "${cf_tst_cflags}" = "\"'" ; then
137 CF_APPEND_TEXT(cf_new_extra_cppflags,$cf_add_cflags)
146 case "$cf_add_cflags" in
148 cf_tst_cppflags=`echo "x$cf_add_cflags" | sed -e 's/^...//' -e 's/=.*//'`
149 CF_REMOVE_DEFINE(CPPFLAGS,$CPPFLAGS,$cf_tst_cppflags)
152 CF_APPEND_TEXT(cf_new_cppflags,$cf_add_cflags)
157 CF_APPEND_TEXT(cf_new_cflags,$cf_add_cflags)
162 CF_APPEND_TEXT(cf_new_extra_cppflags,$cf_add_cflags)
164 cf_tst_cflags=`echo "${cf_add_cflags}" |sed -e 's/^[[^"]]*"'\''//'`
166 test "x${cf_add_cflags}" != "x${cf_tst_cflags}" \
167 && test -z "${cf_tst_cflags}" \
168 && cf_fix_cppflags=no
173 if test -n "$cf_new_cflags" ; then
174 ifelse([$2],,,[CF_VERBOSE(add to \$CFLAGS $cf_new_cflags)])
175 CF_APPEND_TEXT(CFLAGS,$cf_new_cflags)
178 if test -n "$cf_new_cppflags" ; then
179 ifelse([$2],,,[CF_VERBOSE(add to \$CPPFLAGS $cf_new_cppflags)])
180 CF_APPEND_TEXT(CPPFLAGS,$cf_new_cppflags)
183 if test -n "$cf_new_extra_cppflags" ; then
184 ifelse([$2],,,[CF_VERBOSE(add to \$EXTRA_CPPFLAGS $cf_new_extra_cppflags)])
185 CF_APPEND_TEXT(EXTRA_CPPFLAGS,$cf_new_extra_cppflags)
188 AC_SUBST(EXTRA_CPPFLAGS)
191 dnl ---------------------------------------------------------------------------
192 dnl CF_ADD_INCDIR version: 17 updated: 2021/09/04 06:35:04
194 dnl Add an include-directory to $CPPFLAGS. Don't add /usr/include, since it is
195 dnl redundant. We don't normally need to add -I/usr/local/include for gcc,
196 dnl but old versions (and some misinstalled ones) need that. To make things
197 dnl worse, gcc 3.x may give error messages if -I/usr/local/include is added to
198 dnl the include-path).
199 AC_DEFUN([CF_ADD_INCDIR],
201 if test -n "$1" ; then
202 for cf_add_incdir in $1
204 while test "$cf_add_incdir" != /usr/include
206 if test -d "$cf_add_incdir"
209 if test -n "$CFLAGS$CPPFLAGS" ; then
210 # a loop is needed to ensure we can add subdirs of existing dirs
211 for cf_test_incdir in $CFLAGS $CPPFLAGS ; do
212 if test ".$cf_test_incdir" = ".-I$cf_add_incdir" ; then
213 cf_have_incdir=yes; break
218 if test "$cf_have_incdir" = no ; then
219 if test "$cf_add_incdir" = /usr/local/include ; then
222 cf_save_CPPFLAGS=$CPPFLAGS
223 CF_APPEND_TEXT(CPPFLAGS,-I$cf_add_incdir)
224 AC_TRY_COMPILE([#include <stdio.h>],
227 [cf_have_incdir=yes])
228 CPPFLAGS=$cf_save_CPPFLAGS
233 if test "$cf_have_incdir" = no ; then
234 CF_VERBOSE(adding $cf_add_incdir to include-path)
235 ifelse([$2],,CPPFLAGS,[$2])="$ifelse([$2],,CPPFLAGS,[$2]) -I$cf_add_incdir"
237 cf_top_incdir=`echo "$cf_add_incdir" | sed -e 's%/include/.*$%/include%'`
238 test "$cf_top_incdir" = "$cf_add_incdir" && break
239 cf_add_incdir="$cf_top_incdir"
250 dnl ---------------------------------------------------------------------------
251 dnl CF_ADD_LIB version: 2 updated: 2010/06/02 05:03:05
253 dnl Add a library, used to enforce consistency.
255 dnl $1 = library to add, without the "-l"
256 dnl $2 = variable to update (default $LIBS)
257 AC_DEFUN([CF_ADD_LIB],[CF_ADD_LIBS(-l$1,ifelse($2,,LIBS,[$2]))])dnl
258 dnl ---------------------------------------------------------------------------
259 dnl CF_ADD_LIBDIR version: 11 updated: 2020/12/31 20:19:42
261 dnl Adds to the library-path
263 dnl Some machines have trouble with multiple -L options.
265 dnl $1 is the (list of) directory(s) to add
266 dnl $2 is the optional name of the variable to update (default LDFLAGS)
268 AC_DEFUN([CF_ADD_LIBDIR],
270 if test -n "$1" ; then
271 for cf_add_libdir in $1
273 if test "$cf_add_libdir" = /usr/lib ; then
275 elif test -d "$cf_add_libdir"
278 if test -n "$LDFLAGS$LIBS" ; then
279 # a loop is needed to ensure we can add subdirs of existing dirs
280 for cf_test_libdir in $LDFLAGS $LIBS ; do
281 if test ".$cf_test_libdir" = ".-L$cf_add_libdir" ; then
282 cf_have_libdir=yes; break
286 if test "$cf_have_libdir" = no ; then
287 CF_VERBOSE(adding $cf_add_libdir to library-path)
288 ifelse([$2],,LDFLAGS,[$2])="-L$cf_add_libdir $ifelse([$2],,LDFLAGS,[$2])"
294 dnl ---------------------------------------------------------------------------
295 dnl CF_ADD_LIBS version: 3 updated: 2019/11/02 16:47:33
297 dnl Add one or more libraries, used to enforce consistency. Libraries are
298 dnl prepended to an existing list, since their dependencies are assumed to
299 dnl already exist in the list.
301 dnl $1 = libraries to add, with the "-l", etc.
302 dnl $2 = variable to update (default $LIBS)
303 AC_DEFUN([CF_ADD_LIBS],[
304 cf_add_libs="[$]ifelse($2,,LIBS,[$2])"
307 for cf_add_1lib in $1; do cf_add_0lib="$cf_add_1lib $cf_add_0lib"; done
309 for cf_add_1lib in $cf_add_0lib; do
310 for cf_add_2lib in $cf_add_libs; do
311 if test "x$cf_add_1lib" = "x$cf_add_2lib"; then
316 test -n "$cf_add_1lib" && cf_add_libs="$cf_add_1lib $cf_add_libs"
318 ifelse($2,,LIBS,[$2])="$cf_add_libs"
320 dnl ---------------------------------------------------------------------------
321 dnl CF_ADD_SUBDIR_PATH version: 5 updated: 2020/12/31 20:19:42
322 dnl ------------------
323 dnl Append to a search-list for a nonstandard header/lib-file
324 dnl $1 = the variable to return as result
325 dnl $2 = the package name
326 dnl $3 = the subdirectory, e.g., bin, include or lib
327 dnl $4 = the directory under which we will test for subdirectories
328 dnl $5 = a directory that we do not want $4 to match
329 AC_DEFUN([CF_ADD_SUBDIR_PATH],
331 test "x$4" != "x$5" && \
333 ifelse([$5],NONE,,[{ test -z "$5" || test "x$5" = xNONE || test "x$4" != "x$5"; } &&]) {
334 test -n "$verbose" && echo " ... testing for $3-directories under $4"
335 test -d "$4/$3" && $1="[$]$1 $4/$3"
336 test -d "$4/$3/$2" && $1="[$]$1 $4/$3/$2"
337 test -d "$4/$3/$2/$3" && $1="[$]$1 $4/$3/$2/$3"
338 test -d "$4/$2/$3" && $1="[$]$1 $4/$2/$3"
339 test -d "$4/$2/$3/$2" && $1="[$]$1 $4/$2/$3/$2"
342 dnl ---------------------------------------------------------------------------
343 dnl CF_APPEND_CFLAGS version: 3 updated: 2021/09/05 17:25:40
345 dnl Use CF_ADD_CFLAGS after first checking for potential redefinitions.
346 dnl $1 = flags to add
347 dnl $2 = if given makes this macro verbose.
348 define([CF_APPEND_CFLAGS],
350 for cf_add_cflags in $1
352 case "x$cf_add_cflags" in
354 CF_REMOVE_CFLAGS($cf_add_cflags,CFLAGS,[$2])
355 CF_REMOVE_CFLAGS($cf_add_cflags,CPPFLAGS,[$2])
358 CF_ADD_CFLAGS([$cf_add_cflags],[$2])
361 dnl ---------------------------------------------------------------------------
362 dnl CF_APPEND_TEXT version: 1 updated: 2017/02/25 18:58:55
364 dnl use this macro for appending text without introducing an extra blank at
366 define([CF_APPEND_TEXT],
368 test -n "[$]$1" && $1="[$]$1 "
371 dnl ---------------------------------------------------------------------------
372 dnl CF_ARG_DISABLE version: 3 updated: 1999/03/30 17:24:31
374 dnl Allow user to disable a normally-on option.
375 AC_DEFUN([CF_ARG_DISABLE],
376 [CF_ARG_OPTION($1,[$2],[$3],[$4],yes)])dnl
377 dnl ---------------------------------------------------------------------------
378 dnl CF_ARG_ENABLE version: 3 updated: 1999/03/30 17:24:31
380 dnl Allow user to enable a normally-off option.
381 AC_DEFUN([CF_ARG_ENABLE],
382 [CF_ARG_OPTION($1,[$2],[$3],[$4],no)])dnl
383 dnl ---------------------------------------------------------------------------
384 dnl CF_ARG_OPTION version: 5 updated: 2015/05/10 19:52:14
386 dnl Restricted form of AC_ARG_ENABLE that ensures user doesn't give bogus
392 dnl $3 = action to perform if option is not default
393 dnl $4 = action if perform if option is default
394 dnl $5 = default option value (either 'yes' or 'no')
395 AC_DEFUN([CF_ARG_OPTION],
396 [AC_ARG_ENABLE([$1],[$2],[test "$enableval" != ifelse([$5],no,yes,no) && enableval=ifelse([$5],no,no,yes)
397 if test "$enableval" != "$5" ; then
399 ,[ $3]) ifelse([$4],,,[
402 fi],[enableval=$5 ifelse([$4],,,[
406 dnl ---------------------------------------------------------------------------
407 dnl CF_AR_FLAGS version: 9 updated: 2021/01/01 13:31:04
409 dnl Check for suitable "ar" (archiver) options for updating an archive.
411 dnl In particular, handle some obsolete cases where the "-" might be omitted,
412 dnl as well as a workaround for breakage of make's archive rules by the GNU
413 dnl binutils "ar" program.
414 AC_DEFUN([CF_AR_FLAGS],[
415 AC_REQUIRE([CF_PROG_AR])
417 AC_CACHE_CHECK(for options to update archives, cf_cv_ar_flags,[
418 case "$cf_cv_system_name" in
421 cat >mk_static_lib.sh <<-EOF
426 exec \[$]MSVC_BIN -out:"\[$]out" \[$]@
428 chmod +x mk_static_lib.sh
429 AR=`pwd`/mk_static_lib.sh
432 cf_cv_ar_flags=unknown
433 for cf_ar_flags in -curvU -curv curv -crv crv -cqv cqv -rv rv
436 # check if $ARFLAGS already contains this choice
437 if test "x$ARFLAGS" != "x" ; then
438 cf_check_ar_flags=`echo "x$ARFLAGS" | sed -e "s/$cf_ar_flags\$//" -e "s/$cf_ar_flags / /"`
439 if test "x$ARFLAGS" != "$cf_check_ar_flags" ; then
445 rm -f "conftest.$ac_cv_objext"
448 cat >"conftest.$ac_ext" <<EOF
449 #line __oline__ "configure"
450 int testdata[[3]] = { 123, 456, 789 };
452 if AC_TRY_EVAL(ac_compile) ; then
453 echo "$AR $ARFLAGS $cf_ar_flags conftest.a conftest.$ac_cv_objext" >&AC_FD_CC
454 $AR $ARFLAGS "$cf_ar_flags" conftest.a "conftest.$ac_cv_objext" 2>&AC_FD_CC 1>/dev/null
455 if test -f conftest.a ; then
456 cf_cv_ar_flags="$cf_ar_flags"
460 CF_VERBOSE(cannot compile test-program)
464 rm -f conftest.a "conftest.$ac_ext" "conftest.$ac_cv_objext"
469 if test -n "$ARFLAGS" ; then
470 if test -n "$cf_cv_ar_flags" ; then
471 ARFLAGS="$ARFLAGS $cf_cv_ar_flags"
474 ARFLAGS=$cf_cv_ar_flags
479 dnl ---------------------------------------------------------------------------
480 dnl CF_BUILD_CC version: 9 updated: 2021/01/02 09:31:20
482 dnl If we're cross-compiling, allow the user to override the tools and their
483 dnl options. The configure script is oriented toward identifying the host
484 dnl compiler, etc., but we need a build compiler to generate parts of the
487 dnl $1 = default for $CPPFLAGS
488 dnl $2 = default for $LIBS
489 AC_DEFUN([CF_BUILD_CC],[
490 CF_ACVERSION_CHECK(2.52,,
491 [AC_REQUIRE([CF_PROG_EXT])])
492 if test "$cross_compiling" = yes ; then
494 # defaults that we might want to override
495 : ${BUILD_CFLAGS:=''}
496 : ${BUILD_CPPFLAGS:='ifelse([$1],,,[$1])'}
497 : ${BUILD_LDFLAGS:=''}
498 : ${BUILD_LIBS:='ifelse([$2],,,[$2])'}
499 : ${BUILD_EXEEXT:='$x'}
500 : ${BUILD_OBJEXT:='o'}
502 AC_ARG_WITH(build-cc,
503 [ --with-build-cc=XXX the build C compiler ($BUILD_CC)],
504 [BUILD_CC="$withval"],
505 [AC_CHECK_PROGS(BUILD_CC, [gcc clang c99 c89 cc cl],none)])
506 AC_MSG_CHECKING(for native build C compiler)
507 AC_MSG_RESULT($BUILD_CC)
509 AC_MSG_CHECKING(for native build C preprocessor)
510 AC_ARG_WITH(build-cpp,
511 [ --with-build-cpp=XXX the build C preprocessor ($BUILD_CPP)],
512 [BUILD_CPP="$withval"],
513 [BUILD_CPP='${BUILD_CC} -E'])
514 AC_MSG_RESULT($BUILD_CPP)
516 AC_MSG_CHECKING(for native build C flags)
517 AC_ARG_WITH(build-cflags,
518 [ --with-build-cflags=XXX the build C compiler-flags ($BUILD_CFLAGS)],
519 [BUILD_CFLAGS="$withval"])
520 AC_MSG_RESULT($BUILD_CFLAGS)
522 AC_MSG_CHECKING(for native build C preprocessor-flags)
523 AC_ARG_WITH(build-cppflags,
524 [ --with-build-cppflags=XXX the build C preprocessor-flags ($BUILD_CPPFLAGS)],
525 [BUILD_CPPFLAGS="$withval"])
526 AC_MSG_RESULT($BUILD_CPPFLAGS)
528 AC_MSG_CHECKING(for native build linker-flags)
529 AC_ARG_WITH(build-ldflags,
530 [ --with-build-ldflags=XXX the build linker-flags ($BUILD_LDFLAGS)],
531 [BUILD_LDFLAGS="$withval"])
532 AC_MSG_RESULT($BUILD_LDFLAGS)
534 AC_MSG_CHECKING(for native build linker-libraries)
535 AC_ARG_WITH(build-libs,
536 [ --with-build-libs=XXX the build libraries (${BUILD_LIBS})],
537 [BUILD_LIBS="$withval"])
538 AC_MSG_RESULT($BUILD_LIBS)
540 # this assumes we're on Unix.
544 : ${BUILD_CC:='${CC}'}
546 if { test "$BUILD_CC" = "$CC" || test "$BUILD_CC" = '${CC}'; } ; then
547 AC_MSG_ERROR([Cross-build requires two compilers.
548 Use --with-build-cc to specify the native compiler.])
552 : ${BUILD_CC:='${CC}'}
553 : ${BUILD_CPP:='${CPP}'}
554 : ${BUILD_CFLAGS:='${CFLAGS}'}
555 : ${BUILD_CPPFLAGS:='${CPPFLAGS}'}
556 : ${BUILD_LDFLAGS:='${LDFLAGS}'}
557 : ${BUILD_LIBS:='${LIBS}'}
558 : ${BUILD_EXEEXT:='$x'}
559 : ${BUILD_OBJEXT:='o'}
564 AC_SUBST(BUILD_CFLAGS)
565 AC_SUBST(BUILD_CPPFLAGS)
566 AC_SUBST(BUILD_LDFLAGS)
568 AC_SUBST(BUILD_EXEEXT)
569 AC_SUBST(BUILD_OBJEXT)
571 dnl ---------------------------------------------------------------------------
572 dnl CF_C11_NORETURN version: 3 updated: 2021/03/28 11:36:23
574 AC_DEFUN([CF_C11_NORETURN],
576 AC_MSG_CHECKING(if you want to use C11 _Noreturn feature)
577 CF_ARG_ENABLE(stdnoreturn,
578 [ --enable-stdnoreturn enable C11 _Noreturn feature for diagnostics],
579 [enable_stdnoreturn=yes],
580 [enable_stdnoreturn=no])
581 AC_MSG_RESULT($enable_stdnoreturn)
583 if test $enable_stdnoreturn = yes; then
584 AC_CACHE_CHECK([for C11 _Noreturn feature], cf_cv_c11_noreturn,
588 #include <stdnoreturn.h>
589 static _Noreturn void giveup(void) { exit(0); }
591 [if (feof(stdin)) giveup()],
592 cf_cv_c11_noreturn=yes,
593 cf_cv_c11_noreturn=no)
596 cf_cv_c11_noreturn=no,
599 if test "$cf_cv_c11_noreturn" = yes; then
600 AC_DEFINE(HAVE_STDNORETURN_H, 1,[Define if <stdnoreturn.h> header is available and working])
601 AC_DEFINE_UNQUOTED(STDC_NORETURN,_Noreturn,[Define if C11 _Noreturn keyword is supported])
607 AC_SUBST(HAVE_STDNORETURN_H)
608 AC_SUBST(STDC_NORETURN)
610 dnl ---------------------------------------------------------------------------
611 dnl CF_CC_ENV_FLAGS version: 10 updated: 2020/12/31 18:40:20
613 dnl Check for user's environment-breakage by stuffing CFLAGS/CPPFLAGS content
614 dnl into CC. This will not help with broken scripts that wrap the compiler
615 dnl with options, but eliminates a more common category of user confusion.
617 dnl In particular, it addresses the problem of being able to run the C
618 dnl preprocessor in a consistent manner.
620 dnl Caveat: this also disallows blanks in the pathname for the compiler, but
621 dnl the nuisance of having inconsistent settings for compiler and preprocessor
622 dnl outweighs that limitation.
623 AC_DEFUN([CF_CC_ENV_FLAGS],
625 # This should have been defined by AC_PROG_CC
628 AC_MSG_CHECKING(\$CFLAGS variable)
631 AC_MSG_RESULT(broken)
632 AC_MSG_WARN(your environment uses the CFLAGS variable to hold CPPFLAGS options)
635 for cf_arg in $cf_flags
637 CF_ADD_CFLAGS($cf_arg)
645 AC_MSG_CHECKING(\$CC variable)
648 AC_MSG_RESULT(broken)
649 AC_MSG_WARN(your environment uses the CC variable to hold CFLAGS/CPPFLAGS options)
651 cf_prog=`echo "$CC" | sed -e 's/ / /g' -e 's/[[ ]]* / /g' -e 's/[[ ]]*[[ ]]-[[^ ]].*//'`
652 cf_flags=`echo "$CC" | ${AWK:-awk} -v prog="$cf_prog" '{ printf("%s", [substr]([$]0,1+length(prog))); }'`
654 for cf_arg in $cf_flags
658 CF_ADD_CFLAGS($cf_arg)
665 CF_VERBOSE(resulting CC: '$CC')
666 CF_VERBOSE(resulting CFLAGS: '$CFLAGS')
667 CF_VERBOSE(resulting CPPFLAGS: '$CPPFLAGS')
674 dnl ---------------------------------------------------------------------------
675 dnl CF_CFG_DEFAULTS version: 16 updated: 2021/01/04 19:33:05
677 dnl Determine the default configuration into which we'll install ncurses. This
678 dnl can be overridden by the user's command-line options. There's two items to
680 dnl 1. the prefix (e.g., /usr)
681 dnl 2. the header files (e.g., /usr/include/ncurses)
682 dnl We'll look for a previous installation of ncurses and use the same defaults.
684 dnl We don't use AC_PREFIX_DEFAULT, because it gets evaluated too soon, and
685 dnl we don't use AC_PREFIX_PROGRAM, because we cannot distinguish ncurses's
686 dnl programs from a vendor's.
687 AC_DEFUN([CF_CFG_DEFAULTS],
688 [AC_REQUIRE([AC_PROG_FGREP])dnl
690 AC_MSG_CHECKING(for prefix)
691 if test "x$prefix" = "xNONE" ; then
692 case "$cf_cv_system_name" in
693 # non-vendor systems don't have a conflict
694 (openbsd*|freebsd*|mirbsd*|linux*|cygwin*|msys*|k*bsd*-gnu|mingw*)
697 (*) prefix=$ac_default_prefix
701 AC_MSG_RESULT($prefix)
703 if test "x$prefix" = "xNONE" ; then
704 AC_MSG_CHECKING(for default include-directory)
705 test -n "$verbose" && echo 1>&AC_FD_MSG
708 "$includedir/ncurses" \
710 "$prefix/include/ncurses" \
712 /usr/local/include/ncurses \
716 cf_dir=`eval echo "$cf_symbol"`
717 if test -f "$cf_dir/curses.h" ; then
718 if ( ${FGREP-fgrep} NCURSES_VERSION "$cf_dir/curses.h" >/dev/null 2>&1 ) ; then
719 includedir="$cf_symbol"
720 test -n "$verbose" && echo $ECHO_N " found " 1>&AC_FD_MSG
724 test -n "$verbose" && echo " tested $cf_dir" 1>&AC_FD_MSG
726 AC_MSG_RESULT($includedir)
729 dnl ---------------------------------------------------------------------------
730 dnl CF_CHECK_CACHE version: 13 updated: 2020/12/31 10:54:15
732 dnl Check if we're accidentally using a cache from a different machine.
733 dnl Derive the system name, as a check for reusing the autoconf cache.
735 dnl If we've packaged config.guess and config.sub, run that (since it does a
736 dnl better job than uname). Normally we'll use AC_CANONICAL_HOST, but allow
737 dnl an extra parameter that we may override, e.g., for AC_CANONICAL_SYSTEM
738 dnl which is useful in cross-compiles.
740 dnl Note: we would use $ac_config_sub, but that is one of the places where
741 dnl autoconf 2.5x broke compatibility with autoconf 2.13
742 AC_DEFUN([CF_CHECK_CACHE],
744 if test -f "$srcdir/config.guess" || test -f "$ac_aux_dir/config.guess" ; then
745 ifelse([$1],,[AC_CANONICAL_HOST],[$1])
746 system_name="$host_os"
748 system_name="`(uname -s -r) 2>/dev/null`"
749 if test -z "$system_name" ; then
750 system_name="`(hostname) 2>/dev/null`"
753 test -n "$system_name" && AC_DEFINE_UNQUOTED(SYSTEM_NAME,"$system_name",[Define to the system name.])
754 AC_CACHE_VAL(cf_cv_system_name,[cf_cv_system_name="$system_name"])
756 test -z "$system_name" && system_name="$cf_cv_system_name"
757 test -n "$cf_cv_system_name" && AC_MSG_RESULT(Configuring for $cf_cv_system_name)
759 if test ".$system_name" != ".$cf_cv_system_name" ; then
760 AC_MSG_RESULT(Cached system name ($system_name) does not agree with actual ($cf_cv_system_name))
761 AC_MSG_ERROR("Please remove config.cache and try again.")
764 dnl ---------------------------------------------------------------------------
765 dnl CF_CHECK_GNAT_VERSION version: 4 updated: 2021/01/01 13:31:04
766 dnl ---------------------
767 AC_DEFUN([CF_CHECK_GNAT_VERSION],
769 AC_REQUIRE([CF_GNAT_VERSION])
770 case "$cf_cv_gnat_version" in
771 (3.1[[1-9]]*|3.[[2-9]]*|[[4-9]].*|[[1-9]][[0-9]].[[0-9]]*|20[[0-9]][[0-9]])
772 cf_cv_prog_gnat_correct=yes
775 AC_MSG_WARN(Unsupported GNAT version $cf_cv_gnat_version. We require 3.11 or better. Disabling Ada95 binding.)
776 cf_cv_prog_gnat_correct=no
780 dnl ---------------------------------------------------------------------------
781 dnl CF_CLANG_COMPILER version: 8 updated: 2021/01/01 13:31:04
782 dnl -----------------
783 dnl Check if the given compiler is really clang. clang's C driver defines
784 dnl __GNUC__ (fooling the configure script into setting $GCC to yes) but does
785 dnl not ignore some gcc options.
787 dnl This macro should be run "soon" after AC_PROG_CC or AC_PROG_CPLUSPLUS, to
788 dnl ensure that it is not mistaken for gcc/g++. It is normally invoked from
789 dnl the wrappers for gcc and g++ warnings.
791 dnl $1 = GCC (default) or GXX
792 dnl $2 = CLANG_COMPILER (default)
793 dnl $3 = CFLAGS (default) or CXXFLAGS
794 AC_DEFUN([CF_CLANG_COMPILER],[
795 ifelse([$2],,CLANG_COMPILER,[$2])=no
797 if test "$ifelse([$1],,[$1],GCC)" = yes ; then
798 AC_MSG_CHECKING(if this is really Clang ifelse([$1],GXX,C++,C) compiler)
799 cf_save_CFLAGS="$ifelse([$3],,CFLAGS,[$3])"
805 ],[ifelse([$2],,CLANG_COMPILER,[$2])=yes
807 ifelse([$3],,CFLAGS,[$3])="$cf_save_CFLAGS"
808 AC_MSG_RESULT($ifelse([$2],,CLANG_COMPILER,[$2]))
813 if test "x$ifelse([$2],,CLANG_COMPILER,[$2])" = "xyes" ; then
815 (c[[1-9]][[0-9]]|*/c[[1-9]][[0-9]])
816 AC_MSG_WARN(replacing broken compiler alias $CC)
817 CFLAGS="$CFLAGS -std=`echo "$CC" | sed -e 's%.*/%%'`"
822 AC_MSG_CHECKING(version of $CC)
823 CLANG_VERSION="`$CC --version 2>/dev/null | sed -e '2,$d' -e 's/^.*(CLANG[[^)]]*) //' -e 's/^.*(Debian[[^)]]*) //' -e 's/^[[^0-9.]]*//' -e 's/[[^0-9.]].*//'`"
824 test -z "$CLANG_VERSION" && CLANG_VERSION=unknown
825 AC_MSG_RESULT($CLANG_VERSION)
827 for cf_clang_opt in \
829 -Wno-error=implicit-function-declaration
831 AC_MSG_CHECKING(if option $cf_clang_opt works)
832 cf_save_CFLAGS="$CFLAGS"
833 CFLAGS="$CFLAGS $cf_clang_opt"
835 #include <stdio.h>],[
836 printf("hello!\\n");],[
837 cf_clang_optok=yes],[
839 AC_MSG_RESULT($cf_clang_optok)
840 CFLAGS="$cf_save_CFLAGS"
841 if test "$cf_clang_optok" = yes; then
842 CF_VERBOSE(adding option $cf_clang_opt)
843 CF_APPEND_TEXT(CFLAGS,$cf_clang_opt)
848 dnl ---------------------------------------------------------------------------
849 dnl CF_CONST_X_STRING version: 7 updated: 2021/06/07 17:39:17
850 dnl -----------------
851 dnl The X11R4-X11R6 Xt specification uses an ambiguous String type for most
852 dnl character-strings.
854 dnl It is ambiguous because the specification accommodated the pre-ANSI
855 dnl compilers bundled by more than one vendor in lieu of providing a standard C
856 dnl compiler other than by costly add-ons. Because of this, the specification
857 dnl did not take into account the use of const for telling the compiler that
858 dnl string literals would be in readonly memory.
860 dnl As a workaround, one could (starting with X11R5) define XTSTRINGDEFINES, to
861 dnl let the compiler decide how to represent Xt's strings which were #define'd.
862 dnl That does not solve the problem of using the block of Xt's strings which
863 dnl are compiled into the library (and is less efficient than one might want).
865 dnl Xt specification 7 introduces the _CONST_X_STRING symbol which is used both
866 dnl when compiling the library and compiling using the library, to tell the
867 dnl compiler that String is const.
868 AC_DEFUN([CF_CONST_X_STRING],
870 AC_REQUIRE([AC_PATH_XTRA])
872 CF_SAVE_XTRA_FLAGS([CF_CONST_X_STRING])
877 #include <X11/Intrinsic.h>
879 [String foo = malloc(1); free((void*)foo)],[
881 AC_CACHE_CHECK(for X11/Xt const-feature,cf_cv_const_x_string,[
884 #define _CONST_X_STRING /* X11R7.8 (perhaps) */
885 #undef XTSTRINGDEFINES /* X11R5 and later */
887 #include <X11/Intrinsic.h>
888 ],[String foo = malloc(1); *foo = 0],[
889 cf_cv_const_x_string=no
891 cf_cv_const_x_string=yes
895 CF_RESTORE_XTRA_FLAGS([CF_CONST_X_STRING])
897 case "$cf_cv_const_x_string" in
899 CF_APPEND_TEXT(CPPFLAGS,-DXTSTRINGDEFINES)
902 CF_APPEND_TEXT(CPPFLAGS,-D_CONST_X_STRING)
908 dnl ---------------------------------------------------------------------------
909 dnl CF_CONST_X_STRING version: 7 updated: 2021/06/07 17:39:17
910 dnl -----------------
911 dnl The X11R4-X11R6 Xt specification uses an ambiguous String type for most
912 dnl character-strings.
914 dnl It is ambiguous because the specification accommodated the pre-ANSI
915 dnl compilers bundled by more than one vendor in lieu of providing a standard C
916 dnl compiler other than by costly add-ons. Because of this, the specification
917 dnl did not take into account the use of const for telling the compiler that
918 dnl string literals would be in readonly memory.
920 dnl As a workaround, one could (starting with X11R5) define XTSTRINGDEFINES, to
921 dnl let the compiler decide how to represent Xt's strings which were #define'd.
922 dnl That does not solve the problem of using the block of Xt's strings which
923 dnl are compiled into the library (and is less efficient than one might want).
925 dnl Xt specification 7 introduces the _CONST_X_STRING symbol which is used both
926 dnl when compiling the library and compiling using the library, to tell the
927 dnl compiler that String is const.
928 AC_DEFUN([CF_CONST_X_STRING],
930 AC_REQUIRE([AC_PATH_XTRA])
932 CF_SAVE_XTRA_FLAGS([CF_CONST_X_STRING])
937 #include <X11/Intrinsic.h>
939 [String foo = malloc(1); free((void*)foo)],[
941 AC_CACHE_CHECK(for X11/Xt const-feature,cf_cv_const_x_string,[
944 #define _CONST_X_STRING /* X11R7.8 (perhaps) */
945 #undef XTSTRINGDEFINES /* X11R5 and later */
947 #include <X11/Intrinsic.h>
948 ],[String foo = malloc(1); *foo = 0],[
949 cf_cv_const_x_string=no
951 cf_cv_const_x_string=yes
955 CF_RESTORE_XTRA_FLAGS([CF_CONST_X_STRING])
957 case "$cf_cv_const_x_string" in
959 CF_APPEND_TEXT(CPPFLAGS,-DXTSTRINGDEFINES)
962 CF_APPEND_TEXT(CPPFLAGS,-D_CONST_X_STRING)
968 dnl ---------------------------------------------------------------------------
969 dnl CF_CURSES_HEADER version: 5 updated: 2015/04/23 20:35:30
971 dnl Find a "curses" header file, e.g,. "curses.h", or one of the more common
972 dnl variations of ncurses' installs.
974 dnl $1 = ncurses when looking for ncurses, or is empty
975 AC_DEFUN([CF_CURSES_HEADER],[
976 AC_CACHE_CHECK(if we have identified curses headers,cf_cv_ncurses_header,[
977 cf_cv_ncurses_header=none
979 ncurses.h ifelse($1,,,[$1/ncurses.h]) \
980 curses.h ifelse($1,,,[$1/curses.h]) ifelse($1,,[ncurses/ncurses.h ncurses/curses.h])
982 AC_TRY_COMPILE([#include <${cf_header}>],
983 [initscr(); tgoto("?", 0,0)],
984 [cf_cv_ncurses_header=$cf_header; break],[])
988 if test "$cf_cv_ncurses_header" = none ; then
989 AC_MSG_ERROR(No curses header-files found)
992 # cheat, to get the right #define's for HAVE_NCURSES_H, etc.
993 AC_CHECK_HEADERS($cf_cv_ncurses_header)
995 dnl ---------------------------------------------------------------------------
996 dnl CF_DIRNAME version: 5 updated: 2020/12/31 20:19:42
998 dnl "dirname" is not portable, so we fake it with a shell script.
999 AC_DEFUN([CF_DIRNAME],[$1=`echo "$2" | sed -e 's%/[[^/]]*$%%'`])dnl
1000 dnl ---------------------------------------------------------------------------
1001 dnl CF_DISABLE_ECHO version: 14 updated: 2021/09/04 06:35:04
1003 dnl You can always use "make -n" to see the actual options, but it is hard to
1004 dnl pick out/analyze warning messages when the compile-line is long.
1007 dnl ECHO_LT - symbol to control if libtool is verbose
1008 dnl ECHO_LD - symbol to prefix "cc -o" lines
1009 dnl RULE_CC - symbol to put before implicit "cc -c" lines (e.g., .c.o)
1010 dnl SHOW_CC - symbol to put before explicit "cc -c" lines
1011 dnl ECHO_CC - symbol to put before any "cc" line
1013 AC_DEFUN([CF_DISABLE_ECHO],[
1014 AC_MSG_CHECKING(if you want to see long compiling messages)
1015 CF_ARG_DISABLE(echo,
1016 [ --disable-echo do not display "compiling" commands],
1019 ECHO_LD='@echo linking [$]@;'
1020 RULE_CC='@echo compiling [$]<'
1021 SHOW_CC='@echo compiling [$]@'
1030 AC_MSG_RESULT($enableval)
1037 dnl ---------------------------------------------------------------------------
1038 dnl CF_DISABLE_GNAT_PROJECTS version: 1 updated: 2014/06/01 11:34:00
1039 dnl ------------------------
1040 AC_DEFUN([CF_DISABLE_GNAT_PROJECTS],[
1041 AC_MSG_CHECKING(if we want to use GNAT projects)
1042 CF_ARG_DISABLE(gnat-projects,
1043 [ --disable-gnat-projects test: disable GNAT projects even if usable],
1044 [enable_gnat_projects=no],
1045 [enable_gnat_projects=yes])
1046 AC_MSG_RESULT($enable_gnat_projects)
1048 dnl ---------------------------------------------------------------------------
1049 dnl CF_ENABLE_BROKEN_LINKER version: 2 updated: 2021/01/02 17:09:14
1050 dnl -----------------------
1051 dnl Some linkers cannot reference a data-only object. Cygwin used to be one.
1052 dnl This usually follows CF_LINK_DATAONLY, but is not required in case we need
1053 dnl an unconditional feature.
1054 AC_DEFUN([CF_ENABLE_BROKEN_LINKER],[
1056 AC_MSG_CHECKING(if you want broken-linker support code)
1057 AC_ARG_ENABLE(broken_linker,
1058 [ --enable-broken_linker compile with broken-linker support code],
1059 [with_broken_linker=$enableval],
1060 [with_broken_linker=no])
1061 AC_MSG_RESULT($with_broken_linker)
1063 : "${BROKEN_LINKER:=0}"
1064 if test "x$with_broken_linker" = xyes ; then
1065 AC_DEFINE(BROKEN_LINKER,1,[Define to 1 to work around linkers which cannot link data-only modules])
1068 AC_SUBST(BROKEN_LINKER)
1070 dnl ---------------------------------------------------------------------------
1071 dnl CF_ENABLE_WARNINGS version: 9 updated: 2021/01/05 19:40:50
1072 dnl ------------------
1073 dnl Configure-option to enable gcc warnings
1075 dnl $1 = extra options to add, if supported
1076 dnl $2 = option for checking attributes. By default, this is done when
1077 dnl warnings are enabled. For other values:
1078 dnl yes: always do this, e.g., to use in generated library-headers
1079 dnl no: never do this
1080 AC_DEFUN([CF_ENABLE_WARNINGS],[
1081 if test "$GCC" = yes || test "$GXX" = yes
1083 CF_FIX_WARNINGS(CFLAGS)
1084 CF_FIX_WARNINGS(CPPFLAGS)
1085 CF_FIX_WARNINGS(LDFLAGS)
1086 AC_MSG_CHECKING(if you want to turn on gcc warnings)
1087 CF_ARG_ENABLE(warnings,
1088 [ --enable-warnings test: turn on gcc compiler warnings],
1089 [enable_warnings=yes],
1090 [enable_warnings=no])
1091 AC_MSG_RESULT($enable_warnings)
1092 if test "$enable_warnings" = "yes"
1094 ifelse($2,,[CF_GCC_ATTRIBUTES])
1097 ifelse($2,yes,[CF_GCC_ATTRIBUTES])
1100 dnl ---------------------------------------------------------------------------
1101 dnl CF_FIND_LIBRARY version: 11 updated: 2021/01/02 09:31:20
1103 dnl Look for a non-standard library, given parameters for AC_TRY_LINK. We
1104 dnl prefer a standard location, and use -L options only if we do not find the
1105 dnl library in the standard library location(s).
1106 dnl $1 = library name
1107 dnl $2 = library class, usually the same as library name
1109 dnl $4 = code fragment to compile/link
1110 dnl $5 = corresponding function-name
1111 dnl $6 = flag, nonnull if failure should not cause an error-exit
1113 dnl Sets the variable "$cf_libdir" as a side-effect, so we can see if we had
1114 dnl to use a -L option.
1115 AC_DEFUN([CF_FIND_LIBRARY],
1117 eval 'cf_cv_have_lib_'"$1"'=no'
1120 eval 'cf_cv_have_lib_'"$1"'=yes',[
1121 cf_save_LIBS="$LIBS"
1122 AC_MSG_CHECKING(for $5 in -l$1)
1124 AC_TRY_LINK([$3],[$4],
1126 eval 'cf_cv_have_lib_'"$1"'=yes'
1129 CF_LIBRARY_PATH(cf_search,$2)
1130 for cf_libdir in $cf_search
1132 AC_MSG_CHECKING(for -l$1 in $cf_libdir)
1133 LIBS="-L$cf_libdir -l$1 $cf_save_LIBS"
1134 AC_TRY_LINK([$3],[$4],
1136 eval 'cf_cv_have_lib_'"$1"'=yes'
1139 LIBS="$cf_save_LIBS"])
1143 eval 'cf_found_library="[$]cf_cv_have_lib_'"$1"\"
1145 if test "$cf_found_library" = no ; then
1146 AC_MSG_ERROR(Cannot link $1 library)
1150 dnl ---------------------------------------------------------------------------
1151 dnl CF_FIND_LINKAGE version: 22 updated: 2020/12/31 20:19:42
1153 dnl Find a library (specifically the linkage used in the code fragment),
1154 dnl searching for it if it is not already in the library path.
1155 dnl See also CF_ADD_SEARCHPATH.
1157 dnl Parameters (4-on are optional):
1158 dnl $1 = headers for library entrypoint
1159 dnl $2 = code fragment for library entrypoint
1160 dnl $3 = the library name without the "-l" option or ".so" suffix.
1161 dnl $4 = action to perform if successful (default: update CPPFLAGS, etc)
1162 dnl $5 = action to perform if not successful
1163 dnl $6 = module name, if not the same as the library name
1164 dnl $7 = extra libraries
1166 dnl Sets these variables:
1167 dnl $cf_cv_find_linkage_$3 - yes/no according to whether linkage is found
1168 dnl $cf_cv_header_path_$3 - include-directory if needed
1169 dnl $cf_cv_library_path_$3 - library-directory if needed
1170 dnl $cf_cv_library_file_$3 - library-file if needed, e.g., -l$3
1171 AC_DEFUN([CF_FIND_LINKAGE],[
1173 # If the linkage is not already in the $CPPFLAGS/$LDFLAGS configuration, these
1174 # will be set on completion of the AC_TRY_LINK below.
1175 cf_cv_header_path_$3=
1176 cf_cv_library_path_$3=
1178 CF_MSG_LOG([Starting [FIND_LINKAGE]($3,$6)])
1180 cf_save_LIBS="$LIBS"
1182 AC_TRY_LINK([$1],[$2],[
1183 cf_cv_find_linkage_$3=yes
1184 cf_cv_header_path_$3=/usr/include
1185 cf_cv_library_path_$3=/usr/lib
1188 LIBS="-l$3 $7 $cf_save_LIBS"
1190 AC_TRY_LINK([$1],[$2],[
1191 cf_cv_find_linkage_$3=yes
1192 cf_cv_header_path_$3=/usr/include
1193 cf_cv_library_path_$3=/usr/lib
1194 cf_cv_library_file_$3="-l$3"
1196 cf_cv_find_linkage_$3=no
1197 LIBS="$cf_save_LIBS"
1199 CF_VERBOSE(find linkage for $3 library)
1200 CF_MSG_LOG([Searching for headers in [FIND_LINKAGE]($3,$6)])
1202 cf_save_CPPFLAGS="$CPPFLAGS"
1203 cf_test_CPPFLAGS="$CPPFLAGS"
1205 CF_HEADER_PATH(cf_search,ifelse([$6],,[$3],[$6]))
1206 for cf_cv_header_path_$3 in $cf_search
1208 if test -d "$cf_cv_header_path_$3" ; then
1209 CF_VERBOSE(... testing $cf_cv_header_path_$3)
1210 CPPFLAGS="$cf_save_CPPFLAGS"
1211 CF_APPEND_TEXT(CPPFLAGS,-I$cf_cv_header_path_$3)
1212 AC_TRY_COMPILE([$1],[$2],[
1213 CF_VERBOSE(... found $3 headers in $cf_cv_header_path_$3)
1214 cf_cv_find_linkage_$3=maybe
1215 cf_test_CPPFLAGS="$CPPFLAGS"
1217 CPPFLAGS="$cf_save_CPPFLAGS"
1222 if test "$cf_cv_find_linkage_$3" = maybe ; then
1224 CF_MSG_LOG([Searching for $3 library in [FIND_LINKAGE]($3,$6)])
1226 cf_save_LIBS="$LIBS"
1227 cf_save_LDFLAGS="$LDFLAGS"
1230 CPPFLAGS="$cf_test_CPPFLAGS"
1231 LIBS="-l$3 $7 $cf_save_LIBS"
1232 AC_TRY_LINK([$1],[$2],[
1233 CF_VERBOSE(... found $3 library in system)
1234 cf_cv_find_linkage_$3=yes])
1235 CPPFLAGS="$cf_save_CPPFLAGS"
1236 LIBS="$cf_save_LIBS"
1239 if test "$cf_cv_find_linkage_$3" != yes ; then
1240 CF_LIBRARY_PATH(cf_search,$3)
1241 for cf_cv_library_path_$3 in $cf_search
1243 if test -d "$cf_cv_library_path_$3" ; then
1244 CF_VERBOSE(... testing $cf_cv_library_path_$3)
1245 CPPFLAGS="$cf_test_CPPFLAGS"
1246 LIBS="-l$3 $7 $cf_save_LIBS"
1247 LDFLAGS="$cf_save_LDFLAGS -L$cf_cv_library_path_$3"
1248 AC_TRY_LINK([$1],[$2],[
1249 CF_VERBOSE(... found $3 library in $cf_cv_library_path_$3)
1250 cf_cv_find_linkage_$3=yes
1251 cf_cv_library_file_$3="-l$3"
1253 CPPFLAGS="$cf_save_CPPFLAGS"
1254 LIBS="$cf_save_LIBS"
1255 LDFLAGS="$cf_save_LDFLAGS"
1259 CPPFLAGS="$cf_save_CPPFLAGS"
1260 LDFLAGS="$cf_save_LDFLAGS"
1264 cf_cv_find_linkage_$3=no
1269 LIBS="$cf_save_LIBS"
1271 if test "$cf_cv_find_linkage_$3" = yes ; then
1273 CF_ADD_INCDIR($cf_cv_header_path_$3)
1274 CF_ADD_LIBDIR($cf_cv_library_path_$3)
1278 ifelse([$5],,AC_MSG_WARN(Cannot find $3 library),[$5])
1281 dnl ---------------------------------------------------------------------------
1282 dnl CF_FIXUP_ADAFLAGS version: 2 updated: 2015/04/17 21:13:04
1283 dnl -----------------
1284 dnl make ADAFLAGS consistent with CFLAGS
1285 AC_DEFUN([CF_FIXUP_ADAFLAGS],[
1286 AC_MSG_CHECKING(optimization options for ADAFLAGS)
1294 cf_O_flag=`echo "$CFLAGS" |sed -e 's/^.*-O/-O/' -e 's/[[ ]].*//'`
1295 CF_ADD_ADAFLAGS($cf_O_flag)
1298 AC_MSG_RESULT($ADAFLAGS)
1300 dnl ---------------------------------------------------------------------------
1301 dnl CF_FIX_WARNINGS version: 3 updated: 2020/12/31 18:40:20
1303 dnl Warning flags do not belong in CFLAGS, CPPFLAGS, etc. Any of gcc's
1304 dnl "-Werror" flags can interfere with configure-checks. Those go into
1307 dnl $1 = variable name to repair
1308 define([CF_FIX_WARNINGS],[
1309 if test "$GCC" = yes || test "$GXX" = yes
1313 CF_VERBOSE(repairing $1: [$]$1)
1315 for cf_temp_scan in [$]$1
1317 case "x$cf_temp_scan" in
1319 CF_APPEND_TEXT(EXTRA_CFLAGS,$cf_temp_scan)
1322 CF_APPEND_TEXT(cf_temp_flags,$cf_temp_scan)
1327 CF_VERBOSE(... fixed [$]$1)
1328 CF_VERBOSE(... extra $EXTRA_CFLAGS)
1332 AC_SUBST(EXTRA_CFLAGS)
1334 dnl ---------------------------------------------------------------------------
1335 dnl CF_GCC_ATTRIBUTES version: 24 updated: 2021/03/20 12:00:25
1336 dnl -----------------
1337 dnl Test for availability of useful gcc __attribute__ directives to quiet
1338 dnl compiler warnings. Though useful, not all are supported -- and contrary
1339 dnl to documentation, unrecognized directives cause older compilers to barf.
1340 AC_DEFUN([CF_GCC_ATTRIBUTES],
1341 [AC_REQUIRE([AC_PROG_FGREP])dnl
1342 AC_REQUIRE([CF_C11_NORETURN])dnl
1344 if test "$GCC" = yes || test "$GXX" = yes
1346 cat > conftest.i <<EOF
1348 #define GCC_PRINTF 0
1353 #ifndef GCC_NORETURN
1354 #define GCC_NORETURN /* nothing */
1357 #define GCC_UNUSED /* nothing */
1360 if test "$GCC" = yes
1362 AC_CHECKING([for $CC __attribute__ directives])
1363 cat > "conftest.$ac_ext" <<EOF
1364 #line __oline__ "${as_me:-configure}"
1365 #include "confdefs.h"
1366 #include "conftest.h"
1367 #include "conftest.i"
1369 #define GCC_PRINTFLIKE(fmt,var) __attribute__((format(printf,fmt,var)))
1371 #define GCC_PRINTFLIKE(fmt,var) /*nothing*/
1374 #define GCC_SCANFLIKE(fmt,var) __attribute__((format(scanf,fmt,var)))
1376 #define GCC_SCANFLIKE(fmt,var) /*nothing*/
1378 extern void wow(char *,...) GCC_SCANFLIKE(1,2);
1379 extern GCC_NORETURN void oops(char *,...) GCC_PRINTFLIKE(1,2);
1380 extern GCC_NORETURN void foo(void);
1381 int main(int argc GCC_UNUSED, char *argv[[]] GCC_UNUSED) { (void)argc; (void)argv; return 0; }
1383 cf_printf_attribute=no
1384 cf_scanf_attribute=no
1385 for cf_attribute in scanf printf unused noreturn
1387 CF_UPPER(cf_ATTRIBUTE,$cf_attribute)
1388 cf_directive="__attribute__(($cf_attribute))"
1389 echo "checking for $CC $cf_directive" 1>&AC_FD_CC
1391 case "$cf_attribute" in
1393 cf_printf_attribute=yes
1394 cat >conftest.h <<EOF
1395 #define GCC_$cf_ATTRIBUTE 1
1399 cf_scanf_attribute=yes
1400 cat >conftest.h <<EOF
1401 #define GCC_$cf_ATTRIBUTE 1
1405 cat >conftest.h <<EOF
1406 #define GCC_$cf_ATTRIBUTE $cf_directive
1411 if AC_TRY_EVAL(ac_compile); then
1412 test -n "$verbose" && AC_MSG_RESULT(... $cf_attribute)
1413 cat conftest.h >>confdefs.h
1414 case "$cf_attribute" in
1416 AC_DEFINE_UNQUOTED(GCC_NORETURN,$cf_directive,[Define to noreturn-attribute for gcc])
1419 cf_value='/* nothing */'
1420 if test "$cf_printf_attribute" != no ; then
1421 cf_value='__attribute__((format(printf,fmt,var)))'
1422 AC_DEFINE(GCC_PRINTF,1,[Define to 1 if the compiler supports gcc-like printf attribute.])
1424 AC_DEFINE_UNQUOTED(GCC_PRINTFLIKE(fmt,var),$cf_value,[Define to printf-attribute for gcc])
1427 cf_value='/* nothing */'
1428 if test "$cf_scanf_attribute" != no ; then
1429 cf_value='__attribute__((format(scanf,fmt,var)))'
1430 AC_DEFINE(GCC_SCANF,1,[Define to 1 if the compiler supports gcc-like scanf attribute.])
1432 AC_DEFINE_UNQUOTED(GCC_SCANFLIKE(fmt,var),$cf_value,[Define to sscanf-attribute for gcc])
1435 AC_DEFINE_UNQUOTED(GCC_UNUSED,$cf_directive,[Define to unused-attribute for gcc])
1441 ${FGREP-fgrep} define conftest.i >>confdefs.h
1446 dnl ---------------------------------------------------------------------------
1447 dnl CF_GCC_VERSION version: 8 updated: 2019/09/07 13:38:36
1449 dnl Find version of gcc, and (because icc/clang pretend to be gcc without being
1450 dnl compatible), attempt to determine if icc/clang is actually used.
1451 AC_DEFUN([CF_GCC_VERSION],[
1452 AC_REQUIRE([AC_PROG_CC])
1454 if test "$GCC" = yes ; then
1455 AC_MSG_CHECKING(version of $CC)
1456 GCC_VERSION="`${CC} --version 2>/dev/null | sed -e '2,$d' -e 's/^.*(GCC[[^)]]*) //' -e 's/^.*(Debian[[^)]]*) //' -e 's/^[[^0-9.]]*//' -e 's/[[^0-9.]].*//'`"
1457 test -z "$GCC_VERSION" && GCC_VERSION=unknown
1458 AC_MSG_RESULT($GCC_VERSION)
1460 CF_INTEL_COMPILER(GCC,INTEL_COMPILER,CFLAGS)
1461 CF_CLANG_COMPILER(GCC,CLANG_COMPILER,CFLAGS)
1463 dnl ---------------------------------------------------------------------------
1464 dnl CF_GCC_WARNINGS version: 41 updated: 2021/01/01 16:53:59
1466 dnl Check if the compiler supports useful warning options. There's a few that
1467 dnl we don't use, simply because they're too noisy:
1469 dnl -Wconversion (useful in older versions of gcc, but not in gcc 2.7.x)
1470 dnl -Winline (usually not worthwhile)
1471 dnl -Wredundant-decls (system headers make this too noisy)
1472 dnl -Wtraditional (combines too many unrelated messages, only a few useful)
1473 dnl -Wwrite-strings (too noisy, but should review occasionally). This
1474 dnl is enabled for ncurses using "--enable-const".
1478 dnl $1 is an optional list of gcc warning flags that a particular
1479 dnl application might want to use, e.g., "no-unused" for
1482 dnl If $with_ext_const is "yes", add a check for -Wwrite-strings
1484 AC_DEFUN([CF_GCC_WARNINGS],
1486 AC_REQUIRE([CF_GCC_VERSION])
1487 if test "x$have_x" = xyes; then CF_CONST_X_STRING fi
1488 cat > "conftest.$ac_ext" <<EOF
1489 #line __oline__ "${as_me:-configure}"
1490 int main(int argc, char *argv[[]]) { return (argv[[argc-1]] == 0) ; }
1492 if test "$INTEL_COMPILER" = yes
1494 # The "-wdXXX" options suppress warnings:
1495 # remark #1419: external declaration in primary source file
1496 # remark #1683: explicit conversion of a 64-bit integral type to a smaller integral type (potential portability problem)
1497 # remark #1684: conversion from pointer to same-sized integral type (potential portability problem)
1498 # remark #193: zero used for undefined preprocessing identifier
1499 # remark #593: variable "curs_sb_left_arrow" was set but never used
1500 # remark #810: conversion from "int" to "Dimension={unsigned short}" may lose significant bits
1501 # remark #869: parameter "tw" was never referenced
1502 # remark #981: operands are evaluated in unspecified order
1503 # warning #279: controlling expression is constant
1505 AC_CHECKING([for $CC warning options])
1506 cf_save_CFLAGS="$CFLAGS"
1507 EXTRA_CFLAGS="$EXTRA_CFLAGS -Wall"
1519 CFLAGS="$cf_save_CFLAGS $EXTRA_CFLAGS -$cf_opt"
1520 if AC_TRY_EVAL(ac_compile); then
1521 test -n "$verbose" && AC_MSG_RESULT(... -$cf_opt)
1522 EXTRA_CFLAGS="$EXTRA_CFLAGS -$cf_opt"
1525 CFLAGS="$cf_save_CFLAGS"
1526 elif test "$GCC" = yes && test "$GCC_VERSION" != "unknown"
1528 AC_CHECKING([for $CC warning options])
1529 cf_save_CFLAGS="$CFLAGS"
1531 test "$with_ext_const" = yes && cf_warn_CONST="Wwrite-strings"
1532 cf_gcc_warnings="Wignored-qualifiers Wlogical-op Wvarargs"
1533 test "x$CLANG_COMPILER" = xyes && cf_gcc_warnings=
1534 for cf_opt in W Wall \
1535 Wbad-function-cast \
1538 Wdeclaration-after-statement \
1541 Wmissing-declarations \
1542 Wmissing-prototypes \
1546 Wstrict-prototypes \
1547 Wundef Wno-inline $cf_gcc_warnings $cf_warn_CONST $1
1549 CFLAGS="$cf_save_CFLAGS $EXTRA_CFLAGS -$cf_opt"
1550 if AC_TRY_EVAL(ac_compile); then
1551 test -n "$verbose" && AC_MSG_RESULT(... -$cf_opt)
1554 case "$GCC_VERSION" in
1556 CF_VERBOSE(feature is broken in gcc $GCC_VERSION)
1561 case "$GCC_VERSION" in
1563 CF_VERBOSE(feature is broken in gcc $GCC_VERSION)
1568 EXTRA_CFLAGS="$EXTRA_CFLAGS -$cf_opt"
1571 CFLAGS="$cf_save_CFLAGS"
1575 AC_SUBST(EXTRA_CFLAGS)
1577 dnl ---------------------------------------------------------------------------
1578 dnl CF_GNATPREP_OPT_T version: 1 updated: 2014/08/02 18:37:25
1579 dnl -----------------
1580 AC_DEFUN([CF_GNATPREP_OPT_T],[
1581 AC_CACHE_CHECK(if GNATPREP supports -T option,cf_cv_gnatprep_opt_t,[
1582 cf_cv_gnatprep_opt_t=no
1583 gnatprep -T 2>/dev/null >/dev/null && cf_cv_gnatprep_opt_t=yes
1585 test "$cf_cv_gnatprep_opt_t" = yes && GNATPREP_OPTS="-T $GNATPREP_OPTS"
1586 AC_SUBST(GNATPREP_OPTS)
1588 dnl ---------------------------------------------------------------------------
1589 dnl CF_GNAT_GENERICS version: 7 updated: 2021/01/01 13:31:04
1590 dnl ----------------
1591 AC_DEFUN([CF_GNAT_GENERICS],
1593 AC_REQUIRE([CF_GNAT_VERSION])
1595 AC_MSG_CHECKING(if GNAT supports generics)
1596 case "$cf_cv_gnat_version" in
1597 (3.1[[1-9]]*|3.[[2-9]]*|[[4-9]].*|[[1-9]][[0-9]].[[0-9]]*|20[[0-9]][[0-9]])
1598 cf_gnat_generics=yes
1604 AC_MSG_RESULT($cf_gnat_generics)
1606 if test "$cf_gnat_generics" = yes
1608 cf_compile_generics=generics
1609 cf_generic_objects="\${GENOBJS}"
1611 cf_compile_generics=
1615 AC_SUBST(cf_compile_generics)
1616 AC_SUBST(cf_generic_objects)
1618 dnl ---------------------------------------------------------------------------
1619 dnl CF_GNAT_PROJECTS version: 13 updated: 2021/01/02 17:09:14
1620 dnl ----------------
1621 dnl GNAT projects are configured with ".gpr" project files.
1622 dnl GNAT libraries are a further development, using the project feature.
1623 AC_DEFUN([CF_GNAT_PROJECTS],
1625 AC_REQUIRE([CF_GNAT_VERSION])
1626 AC_REQUIRE([CF_DISABLE_GNAT_PROJECTS])
1628 cf_gnat_libraries=no
1631 if test "$enable_gnat_projects" != no ; then
1632 AC_MSG_CHECKING(if GNAT supports project files)
1633 case "$cf_cv_gnat_version" in
1637 case "$cf_cv_system_name" in
1641 rm -rf ./conftest* ./*~conftest*
1642 if mkdir conftest.src conftest.bin conftest.lib
1645 rm -rf ./conftest* ./*~conftest*
1646 cat >>library.gpr <<CF_EOF
1648 Kind := External ("LIB_KIND");
1649 for Library_Name use "ConfTest";
1650 for Object_Dir use ".";
1651 for Library_ALI_Dir use External("LIBRARY_DIR");
1652 for Library_Version use External ("SONAME");
1653 for Library_Kind use Kind;
1654 for Library_Dir use External("BUILD_DIR");
1655 Source_Dir := External ("SOURCE_DIR");
1656 for Source_Dirs use (Source_Dir);
1659 cat >>confpackage.ads <<CF_EOF
1660 package ConfPackage is
1664 cat >>confpackage.adb <<CF_EOF
1666 package body ConfPackage is
1667 procedure conftest is
1669 Text_IO.Put ("Hello World");
1674 if ( "$cf_ada_make" $ADAFLAGS \
1676 -XBUILD_DIR="`cd ../conftest.bin;pwd`" \
1677 -XLIBRARY_DIR="`cd ../conftest.lib;pwd`" \
1678 -XSOURCE_DIR="`pwd`" \
1679 -XSONAME=libConfTest.so.1 \
1680 -XLIB_KIND=static 1>&AC_FD_CC 2>&1 ) ; then
1681 cf_gnat_projects=yes
1685 if test -f conftest.lib/confpackage.ali
1687 cf_gnat_libraries=yes
1689 rm -rf ./conftest* ./*~conftest*
1694 AC_MSG_RESULT($cf_gnat_projects)
1695 fi # enable_gnat_projects
1697 if test "$cf_gnat_projects" = yes
1699 AC_MSG_CHECKING(if GNAT supports libraries)
1700 AC_MSG_RESULT($cf_gnat_libraries)
1703 USE_OLD_MAKERULES=""
1704 USE_GNAT_PROJECTS="#"
1705 USE_GNAT_MAKE_GPR="#"
1706 USE_GNAT_GPRBUILD="#"
1708 if test "$cf_gnat_projects" = yes
1710 USE_OLD_MAKERULES="#"
1711 USE_GNAT_PROJECTS=""
1712 if test "$cf_cv_VERSION_GPRBUILD" != no
1714 USE_GNAT_GPRBUILD=""
1715 elif test "$cf_cv_VERSION_GNATMAKE" != no
1717 USE_GNAT_MAKE_GPR=""
1719 AC_MSG_WARN(use old makefile rules since tools are missing)
1723 if test "$cf_gnat_libraries" = yes
1725 USE_GNAT_LIBRARIES=""
1727 USE_GNAT_LIBRARIES="#"
1730 AC_SUBST(USE_OLD_MAKERULES)
1731 AC_SUBST(USE_GNAT_PROJECTS)
1732 AC_SUBST(USE_GNAT_LIBRARIES)
1733 AC_SUBST(USE_GNAT_MAKE_GPR)
1734 AC_SUBST(USE_GNAT_GPRBUILD)
1736 dnl ---------------------------------------------------------------------------
1737 dnl CF_GNAT_SIGINT version: 2 updated: 2021/01/01 13:31:04
1739 dnl Check if gnat supports SIGINT, and presumably tasking. For the latter, it
1740 dnl is noted that gnat may compile a tasking unit even for configurations which
1741 dnl fail at runtime.
1742 AC_DEFUN([CF_GNAT_SIGINT],[
1743 AC_CACHE_CHECK(if GNAT supports SIGINT,cf_cv_gnat_sigint,[
1744 CF_GNAT_TRY_LINK([with Ada.Interrupts.Names;
1748 pragma Warnings (Off); -- the next pragma exists since 3.11p
1749 pragma Unreserve_All_Interrupts;
1750 pragma Warnings (On);
1752 protected Process is
1754 function Continue return Boolean;
1755 pragma Attach_Handler (Stop, Ada.Interrupts.Names.SIGINT);
1757 Done : Boolean := False;
1761 [package body ConfTest is
1762 protected body Process is
1767 function Continue return Boolean is
1773 [cf_cv_gnat_sigint=yes],
1774 [cf_cv_gnat_sigint=no])])
1776 if test "$cf_cv_gnat_sigint" = yes ; then
1781 AC_SUBST(USE_GNAT_SIGINT)
1783 dnl ---------------------------------------------------------------------------
1784 dnl CF_GNAT_TRY_LINK version: 4 updated: 2021/01/01 13:31:04
1785 dnl ----------------
1786 dnl Verify that a test program compiles/links with GNAT.
1787 dnl $cf_ada_make is set to the program that compiles/links
1788 dnl $ADAFLAGS may be set to the GNAT flags.
1790 dnl $1 is the text of the spec
1791 dnl $2 is the text of the body
1792 dnl $3 is the shell command to execute if successful
1793 dnl $4 is the shell command to execute if not successful
1794 AC_DEFUN([CF_GNAT_TRY_LINK],
1796 rm -rf ./conftest* ./*~conftest*
1797 cat >>conftest.ads <<CF_EOF
1800 cat >>conftest.adb <<CF_EOF
1803 if ( "$cf_ada_make" $ADAFLAGS conftest 1>&AC_FD_CC 2>&1 ) ; then
1804 ifelse($3,, :,[ $3])
1808 rm -rf ./conftest* ./*~conftest*
1810 dnl ---------------------------------------------------------------------------
1811 dnl CF_GNAT_TRY_RUN version: 6 updated: 2021/01/01 13:31:04
1813 dnl Verify that a test program compiles and runs with GNAT
1814 dnl $cf_ada_make is set to the program that compiles/links
1815 dnl $ADAFLAGS may be set to the GNAT flags.
1817 dnl $1 is the text of the spec
1818 dnl $2 is the text of the body
1819 dnl $3 is the shell command to execute if successful
1820 dnl $4 is the shell command to execute if not successful
1821 AC_DEFUN([CF_GNAT_TRY_RUN],
1823 rm -rf ./conftest* ./*~conftest*
1824 cat >>conftest.ads <<CF_EOF
1827 cat >>conftest.adb <<CF_EOF
1830 if ( "$cf_ada_make" $ADAFLAGS conftest 1>&AC_FD_CC 2>&1 ) ; then
1831 if ( ./conftest 1>&AC_FD_CC 2>&1 ) ; then
1832 ifelse($3,, :,[ $3])
1839 rm -rf ./conftest* ./*~conftest*
1841 dnl ---------------------------------------------------------------------------
1842 dnl CF_GNAT_VERSION version: 22 updated: 2019/12/31 08:53:54
1844 dnl $1 = cache variable to update
1845 dnl $2 = program name
1846 dnl Verify version of GNAT or related tool
1847 AC_DEFUN([CF_GNAT_VERSION],
1849 AC_CACHE_CHECK(for ifelse($2,,gnat,$2) version, cf_cv_gnat_version,[
1850 cf_cv_gnat_version=`ifelse($2,,${cf_ada_make:-gnatmake},$2) --version 2>&1 | \
1851 grep '[[0-9]].[[0-9]][[0-9]]*' |\
1852 sed -e '2,$d' -e 's/[[^0-9 \.]]//g' -e 's/^[[ ]]*//' -e 's/ .*//'`
1854 test -z "$cf_cv_gnat_version" && cf_cv_gnat_version=no
1855 ifelse($1,,,[eval $1=$cf_cv_gnat_version; unset cf_cv_gnat_version])
1857 dnl ---------------------------------------------------------------------------
1858 dnl CF_GNU_SOURCE version: 10 updated: 2018/12/10 20:09:41
1860 dnl Check if we must define _GNU_SOURCE to get a reasonable value for
1861 dnl _XOPEN_SOURCE, upon which many POSIX definitions depend. This is a defect
1862 dnl (or misfeature) of glibc2, which breaks portability of many applications,
1863 dnl since it is interwoven with GNU extensions.
1865 dnl Well, yes we could work around it...
1868 dnl $1 is the nominal value for _XOPEN_SOURCE
1869 AC_DEFUN([CF_GNU_SOURCE],
1871 cf_gnu_xopen_source=ifelse($1,,500,$1)
1873 AC_CACHE_CHECK(if this is the GNU C library,cf_cv_gnu_library,[
1874 AC_TRY_COMPILE([#include <sys/types.h>],[
1875 #if __GLIBC__ > 0 && __GLIBC_MINOR__ >= 0
1877 #elif __NEWLIB__ > 0 && __NEWLIB_MINOR__ >= 0
1880 # error not GNU C library
1882 [cf_cv_gnu_library=yes],
1883 [cf_cv_gnu_library=no])
1886 if test x$cf_cv_gnu_library = xyes; then
1888 # With glibc 2.19 (13 years after this check was begun), _DEFAULT_SOURCE
1889 # was changed to help a little. newlib incorporated the change about 4
1891 AC_CACHE_CHECK(if _DEFAULT_SOURCE can be used as a basis,cf_cv_gnu_library_219,[
1893 CF_APPEND_TEXT(CPPFLAGS,-D_DEFAULT_SOURCE)
1894 AC_TRY_COMPILE([#include <sys/types.h>],[
1895 #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 19) || (__GLIBC__ > 2)
1897 #elif (__NEWLIB__ == 2 && __NEWLIB_MINOR__ >= 4) || (__GLIBC__ > 3)
1900 # error GNU C library __GLIBC__.__GLIBC_MINOR__ is too old
1902 [cf_cv_gnu_library_219=yes],
1903 [cf_cv_gnu_library_219=no])
1907 if test "x$cf_cv_gnu_library_219" = xyes; then
1909 AC_CACHE_CHECK(if _XOPEN_SOURCE=$cf_gnu_xopen_source works with _DEFAULT_SOURCE,cf_cv_gnu_dftsrc_219,[
1910 CF_ADD_CFLAGS(-D_DEFAULT_SOURCE -D_XOPEN_SOURCE=$cf_gnu_xopen_source)
1913 #include <sys/types.h>
1915 #if (_XOPEN_SOURCE >= $cf_gnu_xopen_source) && (MB_LEN_MAX > 1)
1918 # error GNU C library is too old
1920 [cf_cv_gnu_dftsrc_219=yes],
1921 [cf_cv_gnu_dftsrc_219=no])
1923 test "x$cf_cv_gnu_dftsrc_219" = "xyes" || CPPFLAGS="$cf_save"
1925 cf_cv_gnu_dftsrc_219=maybe
1928 if test "x$cf_cv_gnu_dftsrc_219" != xyes; then
1930 AC_CACHE_CHECK(if we must define _GNU_SOURCE,cf_cv_gnu_source,[
1931 AC_TRY_COMPILE([#include <sys/types.h>],[
1932 #ifndef _XOPEN_SOURCE
1933 #error expected _XOPEN_SOURCE to be defined
1935 [cf_cv_gnu_source=no],
1936 [cf_save="$CPPFLAGS"
1937 CF_ADD_CFLAGS(-D_GNU_SOURCE)
1938 AC_TRY_COMPILE([#include <sys/types.h>],[
1939 #ifdef _XOPEN_SOURCE
1940 #error expected _XOPEN_SOURCE to be undefined
1942 [cf_cv_gnu_source=no],
1943 [cf_cv_gnu_source=yes])
1948 if test "$cf_cv_gnu_source" = yes
1950 AC_CACHE_CHECK(if we should also define _DEFAULT_SOURCE,cf_cv_default_source,[
1951 CF_APPEND_TEXT(CPPFLAGS,-D_GNU_SOURCE)
1952 AC_TRY_COMPILE([#include <sys/types.h>],[
1953 #ifdef _DEFAULT_SOURCE
1954 #error expected _DEFAULT_SOURCE to be undefined
1956 [cf_cv_default_source=no],
1957 [cf_cv_default_source=yes])
1959 if test "$cf_cv_default_source" = yes
1961 CF_APPEND_TEXT(CPPFLAGS,-D_DEFAULT_SOURCE)
1968 dnl ---------------------------------------------------------------------------
1969 dnl CF_HEADER_PATH version: 15 updated: 2021/01/01 13:31:04
1971 dnl Construct a search-list of directories for a nonstandard header-file
1974 dnl $1 = the variable to return as result
1975 dnl $2 = the package name
1976 AC_DEFUN([CF_HEADER_PATH],
1980 # collect the current set of include-directories from compiler flags
1981 cf_header_path_list=""
1982 if test -n "${CFLAGS}${CPPFLAGS}" ; then
1983 for cf_header_path in $CPPFLAGS $CFLAGS
1985 case "$cf_header_path" in
1987 cf_header_path=`echo ".$cf_header_path" |sed -e 's/^...//' -e 's,/include$,,'`
1988 CF_ADD_SUBDIR_PATH($1,$2,include,$cf_header_path,NONE)
1989 cf_header_path_list="$cf_header_path_list [$]$1"
1995 # add the variations for the package we are looking for
1996 CF_SUBDIR_PATH($1,$2,include)
1998 test "$includedir" != NONE && \
1999 test "$includedir" != "/usr/include" && \
2000 test -d "$includedir" && {
2001 test -d "$includedir" && $1="[$]$1 $includedir"
2002 test -d "$includedir/$2" && $1="[$]$1 $includedir/$2"
2005 test "$oldincludedir" != NONE && \
2006 test "$oldincludedir" != "/usr/include" && \
2007 test -d "$oldincludedir" && {
2008 test -d "$oldincludedir" && $1="[$]$1 $oldincludedir"
2009 test -d "$oldincludedir/$2" && $1="[$]$1 $oldincludedir/$2"
2012 $1="[$]$1 $cf_header_path_list"
2014 dnl ---------------------------------------------------------------------------
2015 dnl CF_HELP_MESSAGE version: 4 updated: 2019/12/31 08:53:54
2017 dnl Insert text into the help-message, for readability, from AC_ARG_WITH.
2018 AC_DEFUN([CF_HELP_MESSAGE],
2019 [CF_ACVERSION_CHECK(2.53,[],[
2020 AC_DIVERT_HELP($1)])dnl
2022 dnl ---------------------------------------------------------------------------
2023 dnl CF_INCLUDE_DIRS version: 10 updated: 2014/09/19 20:58:42
2025 dnl Construct the list of include-options according to whether we're building
2026 dnl in the source directory or using '--srcdir=DIR' option.
2027 AC_DEFUN([CF_INCLUDE_DIRS],
2029 if test "$srcdir" != "."; then
2030 CPPFLAGS="-I\${srcdir}/../include $CPPFLAGS"
2032 CPPFLAGS="-I../include $CPPFLAGS"
2033 if test "$srcdir" != "."; then
2034 CPPFLAGS="-I\${srcdir} $CPPFLAGS"
2036 CPPFLAGS="-I. $CPPFLAGS"
2039 dnl ---------------------------------------------------------------------------
2040 dnl CF_INSTALL_OPTS version: 2 updated: 2018/08/18 12:19:21
2042 dnl prompt for/fill-in useful install-program options
2043 AC_DEFUN([CF_INSTALL_OPTS],
2049 dnl ---------------------------------------------------------------------------
2050 dnl CF_INSTALL_OPT_O version: 3 updated: 2020/12/31 20:19:42
2051 dnl ----------------
2052 dnl Almost all "install" programs default to the current user's ownership.
2053 dnl Almost - MINIX is an exception.
2054 AC_DEFUN([CF_INSTALL_OPT_O],
2056 AC_MSG_CHECKING(if install needs to be told about ownership)
2057 case `$ac_config_guess` in
2066 AC_MSG_RESULT($with_install_o)
2067 if test "x$with_install_o" = xyes
2069 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'`"
2074 AC_SUBST(INSTALL_OPT_O)
2076 dnl ---------------------------------------------------------------------------
2077 dnl CF_INSTALL_OPT_P version: 3 updated: 2021/01/01 13:31:04
2078 dnl ----------------
2079 dnl Some install-programs accept a "-p" option to preserve file modification
2080 dnl timestamps. That can be useful as an install option, as well as a way to
2081 dnl avoid the need for ranlib after copying a static archive.
2082 AC_DEFUN([CF_INSTALL_OPT_P],
2084 : "${INSTALL:=install}"
2085 AC_CACHE_CHECK(if install accepts -p option, cf_cv_install_p,[
2090 if $INSTALL -p conftest.in conftest.out 2>/dev/null
2092 if test -f conftest.out/conftest.in
2094 test conftest.in -nt conftest.out/conftest.in 2>conftest.err && \
2095 test conftest.out/conftest.in -nt conftest.in 2>conftest.err
2096 if test -s conftest.err
2111 dnl ---------------------------------------------------------------------------
2112 dnl CF_INSTALL_OPT_S version: 3 updated: 2021/01/05 19:23:48
2113 dnl ----------------
2114 dnl By default, we should strip executables which are installed, but leave the
2115 dnl ability to suppress that for unit-testing.
2116 AC_DEFUN([CF_INSTALL_OPT_S],
2118 AC_MSG_CHECKING(if you want to install stripped executables)
2119 CF_ARG_DISABLE(stripping,
2120 [ --disable-stripping do not strip (debug info) installed executables],
2121 [enable_stripping=no],
2122 [enable_stripping=yes])
2123 AC_MSG_RESULT($enable_stripping)
2125 if test "$enable_stripping" = yes
2131 AC_SUBST(INSTALL_OPT_S)
2133 dnl ---------------------------------------------------------------------------
2134 dnl CF_INTEL_COMPILER version: 8 updated: 2021/01/01 16:53:59
2135 dnl -----------------
2136 dnl Check if the given compiler is really the Intel compiler for Linux. It
2137 dnl tries to imitate gcc, but does not return an error when it finds a mismatch
2138 dnl between prototypes, e.g., as exercised by CF_MISSING_CHECK.
2140 dnl This macro should be run "soon" after AC_PROG_CC or AC_PROG_CPLUSPLUS, to
2141 dnl ensure that it is not mistaken for gcc/g++. It is normally invoked from
2142 dnl the wrappers for gcc and g++ warnings.
2144 dnl $1 = GCC (default) or GXX
2145 dnl $2 = INTEL_COMPILER (default) or INTEL_CPLUSPLUS
2146 dnl $3 = CFLAGS (default) or CXXFLAGS
2147 AC_DEFUN([CF_INTEL_COMPILER],[
2148 AC_REQUIRE([AC_CANONICAL_HOST])
2149 ifelse([$2],,INTEL_COMPILER,[$2])=no
2151 if test "$ifelse([$1],,[$1],GCC)" = yes ; then
2154 AC_MSG_CHECKING(if this is really Intel ifelse([$1],GXX,C++,C) compiler)
2155 cf_save_CFLAGS="$ifelse([$3],,CFLAGS,[$3])"
2156 ifelse([$3],,CFLAGS,[$3])="$ifelse([$3],,CFLAGS,[$3]) -no-gcc"
2158 #ifdef __INTEL_COMPILER
2162 ],[ifelse([$2],,INTEL_COMPILER,[$2])=yes
2163 cf_save_CFLAGS="$cf_save_CFLAGS -we147"
2165 ifelse([$3],,CFLAGS,[$3])="$cf_save_CFLAGS"
2166 AC_MSG_RESULT($ifelse([$2],,INTEL_COMPILER,[$2]))
2171 dnl ---------------------------------------------------------------------------
2172 dnl CF_LARGEFILE version: 12 updated: 2020/03/19 20:23:48
2174 dnl Add checks for large file support.
2175 AC_DEFUN([CF_LARGEFILE],[
2176 ifdef([AC_FUNC_FSEEKO],[
2178 if test "$enable_largefile" != no ; then
2181 # Normally we would collect these definitions in the config.h,
2182 # but (like _XOPEN_SOURCE), some environments rely on having these
2183 # defined before any of the system headers are included. Another
2184 # case comes up with C++, e.g., on AIX the compiler compiles the
2185 # header files by themselves before looking at the body files it is
2186 # told to compile. For ncurses, those header files do not include
2188 if test "$ac_cv_sys_large_files" != no
2190 CF_APPEND_TEXT(CPPFLAGS,-D_LARGE_FILES)
2192 if test "$ac_cv_sys_largefile_source" != no
2194 CF_APPEND_TEXT(CPPFLAGS,-D_LARGEFILE_SOURCE)
2196 if test "$ac_cv_sys_file_offset_bits" != no
2198 CF_APPEND_TEXT(CPPFLAGS,-D_FILE_OFFSET_BITS=$ac_cv_sys_file_offset_bits)
2201 AC_CACHE_CHECK(whether to use struct dirent64, cf_cv_struct_dirent64,[
2203 #pragma GCC diagnostic error "-Wincompatible-pointer-types"
2204 #include <sys/types.h>
2207 /* if transitional largefile support is setup, this is true */
2208 extern struct dirent64 * readdir(DIR *);
2209 struct dirent64 *x = readdir((DIR *)0);
2210 struct dirent *y = readdir((DIR *)0);
2214 [cf_cv_struct_dirent64=yes],
2215 [cf_cv_struct_dirent64=no])
2217 test "$cf_cv_struct_dirent64" = yes && AC_DEFINE(HAVE_STRUCT_DIRENT64,1,[Define to 1 if we have struct dirent64])
2221 dnl ---------------------------------------------------------------------------
2222 dnl CF_LD_RPATH_OPT version: 9 updated: 2021/01/01 13:31:04
2224 dnl For the given system and compiler, find the compiler flags to pass to the
2225 dnl loader to use the "rpath" feature.
2226 AC_DEFUN([CF_LD_RPATH_OPT],
2228 AC_REQUIRE([CF_CHECK_CACHE])
2231 if test "x$cf_cv_enable_rpath" != xno
2233 AC_MSG_CHECKING(for an rpath option)
2234 case "$cf_cv_system_name" in
2236 if test "$GCC" = yes; then
2237 LD_RPATH_OPT="-Wl,-rpath,"
2239 LD_RPATH_OPT="-rpath "
2242 (linux*|gnu*|k*bsd*-gnu|freebsd*)
2243 LD_RPATH_OPT="-Wl,-rpath,"
2245 (openbsd[[2-9]].*|mirbsd*)
2246 LD_RPATH_OPT="-Wl,-rpath,"
2249 LD_RPATH_OPT="-rpath "
2252 LD_RPATH_OPT="-Wl,-rpath,"
2255 LD_RPATH_OPT="-rpath "
2263 AC_MSG_RESULT($LD_RPATH_OPT)
2265 case "x$LD_RPATH_OPT" in
2267 AC_MSG_CHECKING(if we need a space after rpath option)
2268 cf_save_LIBS="$LIBS"
2269 CF_ADD_LIBS(${LD_RPATH_OPT}$libdir)
2270 AC_TRY_LINK(, , cf_rpath_space=no, cf_rpath_space=yes)
2271 LIBS="$cf_save_LIBS"
2272 AC_MSG_RESULT($cf_rpath_space)
2273 test "$cf_rpath_space" = yes && LD_RPATH_OPT="$LD_RPATH_OPT "
2278 dnl ---------------------------------------------------------------------------
2279 dnl CF_LIBRARY_PATH version: 11 updated: 2021/01/01 13:31:04
2281 dnl Construct a search-list of directories for a nonstandard library-file
2284 dnl $1 = the variable to return as result
2285 dnl $2 = the package name
2286 AC_DEFUN([CF_LIBRARY_PATH],
2289 cf_library_path_list=""
2290 if test -n "${LDFLAGS}${LIBS}" ; then
2291 for cf_library_path in $LDFLAGS $LIBS
2293 case "$cf_library_path" in
2295 cf_library_path=`echo ".$cf_library_path" |sed -e 's/^...//' -e 's,/lib$,,'`
2296 CF_ADD_SUBDIR_PATH($1,$2,lib,$cf_library_path,NONE)
2297 cf_library_path_list="$cf_library_path_list [$]$1"
2303 CF_SUBDIR_PATH($1,$2,lib)
2305 $1="$cf_library_path_list [$]$1"
2307 dnl ---------------------------------------------------------------------------
2308 dnl CF_LIB_PREFIX version: 14 updated: 2021/01/01 13:31:04
2310 dnl Compute the library-prefix for the given host system
2311 dnl $1 = variable to set
2312 define([CF_LIB_PREFIX],
2314 case "$cf_cv_system_name" in
2316 if test "$DFT_LWR_MODEL" = libtool; then
2325 (*) LIB_PREFIX='lib'
2328 ifelse($1,,,[$1=$LIB_PREFIX])
2329 AC_SUBST(LIB_PREFIX)
2331 dnl ---------------------------------------------------------------------------
2332 dnl CF_LIB_SUFFIX version: 28 updated: 2021/01/01 16:53:59
2334 dnl Compute the library file-suffix from the given model name
2336 dnl $2 = variable to set (the nominal library suffix)
2337 dnl $3 = dependency variable to set (actual filename)
2338 dnl The variable $LIB_SUFFIX, if set, prepends the variable to set.
2339 AC_DEFUN([CF_LIB_SUFFIX],
2347 case "$cf_cv_system_name" in
2358 case "$cf_cv_system_name" in
2369 case "$cf_cv_system_name" in
2378 (cygwin*|msys*|mingw*)
2416 if test -n "${LIB_SUFFIX}${EXTRA_SUFFIX}"
2418 $2="${LIB_SUFFIX}${EXTRA_SUFFIX}[$]{$2}"
2419 $3="${LIB_SUFFIX}${EXTRA_SUFFIX}[$]{$3}"
2422 dnl ---------------------------------------------------------------------------
2423 dnl CF_LIB_TYPE version: 5 updated: 2015/04/17 21:13:04
2425 dnl Compute the string to append to -library from the given model name
2427 dnl $2 = variable to set
2428 dnl The variable $LIB_SUFFIX, if set, prepends the variable to set.
2429 AC_DEFUN([CF_LIB_TYPE],
2435 (profile) $2='_p' ;;
2438 test -n "$LIB_SUFFIX" && $2="${LIB_SUFFIX}[$]{$2}"
2440 dnl ---------------------------------------------------------------------------
2441 dnl CF_LINK_DATAONLY version: 13 updated: 2020/02/08 15:59:30
2442 dnl ----------------
2443 dnl Some systems have a non-ANSI linker that doesn't pull in modules that have
2444 dnl only data (i.e., no functions), for example NeXT. On those systems we'll
2445 dnl have to provide wrappers for global tables to ensure they're linked
2447 AC_DEFUN([CF_LINK_DATAONLY],
2449 AC_MSG_CHECKING([if data-only library module links])
2450 AC_CACHE_VAL(cf_cv_link_dataonly,[
2452 cat >conftest.$ac_ext <<EOF
2453 #line __oline__ "configure"
2454 int testdata[[3]] = { 123, 456, 789 };
2456 if AC_TRY_EVAL(ac_compile) ; then
2457 mv conftest.o data.o && \
2458 ( $AR $ARFLAGS conftest.a data.o ) 2>&AC_FD_CC 1>/dev/null
2460 rm -f conftest.$ac_ext data.o
2461 cat >conftest.$ac_ext <<EOF
2462 #line __oline__ "configure"
2466 ${cf_cv_main_return:-return}(1); /* I'm told this linker is broken */
2468 extern int testdata[[3]];
2469 return testdata[[0]] == 123
2470 && testdata[[1]] == 456
2471 && testdata[[2]] == 789;
2475 if AC_TRY_EVAL(ac_compile); then
2476 mv conftest.o func.o && \
2477 ( $AR $ARFLAGS conftest.a func.o ) 2>&AC_FD_CC 1>/dev/null
2479 rm -f conftest.$ac_ext func.o
2480 ( eval $RANLIB conftest.a ) 2>&AC_FD_CC >/dev/null
2482 LIBS="conftest.a $LIBS"
2486 extern int testfunc();
2487 ${cf_cv_main_return:-return} (!testfunc());
2490 [cf_cv_link_dataonly=yes],
2491 [cf_cv_link_dataonly=no],
2492 [cf_cv_link_dataonly=unknown])
2495 AC_MSG_RESULT($cf_cv_link_dataonly)
2497 if test "$cf_cv_link_dataonly" = no ; then
2498 AC_DEFINE(BROKEN_LINKER,1,[if data-only library module does not link])
2501 AC_SUBST(BROKEN_LINKER)
2504 dnl ---------------------------------------------------------------------------
2505 dnl CF_MAKEFLAGS version: 21 updated: 2021/09/04 06:47:34
2507 dnl Some 'make' programs support ${MAKEFLAGS}, some ${MFLAGS}, to pass 'make'
2508 dnl options to lower-levels. It is very useful for "make -n" -- if we have it.
2509 dnl (GNU 'make' does both, something POSIX 'make', which happens to make the
2510 dnl ${MAKEFLAGS} variable incompatible because it adds the assignments :-)
2511 AC_DEFUN([CF_MAKEFLAGS],
2512 [AC_REQUIRE([AC_PROG_FGREP])dnl
2514 AC_CACHE_CHECK(for makeflags variable, cf_cv_makeflags,[
2516 for cf_option in '-${MAKEFLAGS}' '${MFLAGS}'
2518 cat >cf_makeflags.tmp <<CF_EOF
2521 @ echo '.$cf_option'
2523 cf_result=`${MAKE:-make} -k -f cf_makeflags.tmp 2>/dev/null | ${FGREP-fgrep} -v "ing directory" | sed -e 's,[[ ]]*$,,'`
2524 case "$cf_result" in
2526 cf_result="`${MAKE:-make} -k -f cf_makeflags.tmp CC=cc 2>/dev/null`"
2527 case "$cf_result" in
2528 (.*CC=*) cf_cv_makeflags=
2530 (*) cf_cv_makeflags=$cf_option
2538 CF_MSG_LOG(given option \"$cf_option\", no match \"$cf_result\")
2542 rm -f cf_makeflags.tmp
2545 AC_SUBST(cf_cv_makeflags)
2547 dnl ---------------------------------------------------------------------------
2548 dnl CF_MAKE_PHONY version: 3 updated: 2021/01/08 16:08:21
2550 dnl Check if the make-program handles a ".PHONY" target, e.g,. a target which
2551 dnl acts as a placeholder.
2553 dnl The ".PHONY" feature was proposed in 2011 here
2554 dnl https://www.austingroupbugs.net/view.php?id=523
2555 dnl and is scheduled for release in P1003.1 Issue 8 (late 2022).
2557 dnl This is not supported by SVr4 make (or SunOS 4, 4.3SD, etc), but works with
2558 dnl a few others (i.e., GNU make and the non-POSIX "BSD" make):
2560 dnl + This is a GNU make feature (since April 1988, but in turn from binutils,
2561 dnl date unspecified).
2563 dnl + It was adopted in NetBSD make in June 1995.
2565 dnl + The other BSD make programs are derived from the NetBSD make (and for
2566 dnl that reason are not actually different "implementations").
2568 dnl + Some features of NetBSD make were actually adapted from pmake, which
2569 dnl began as a modified GNU make starting in 1993.
2571 dnl + Version 3.8 of the dmake program in January 1992 also implemented this
2572 dnl GNU make extension, but is less well known than the BSD make.
2573 AC_DEFUN([CF_MAKE_PHONY],[
2574 AC_CACHE_CHECK(for \".PHONY\" make-support, cf_cv_make_PHONY,[
2577 mkdir conftest || exit 1
2579 cat >makefile <<'CF_EOF'
2583 @echo "** making [$]@ [$](DATA)"
2585 @echo "** making [$]@ [$](DATA)"
2587 @echo "** making [$]@ [$](DATA)"
2588 echo [$](DATA) > [$]@
2590 @echo "** making [$]@ [$](DATA)"
2591 echo [$](DATA) > [$]@
2593 for cf_data in 1 2 3
2595 ${MAKE:-make} always DATA=$cf_data
2596 ${MAKE:-make} once DATA=$cf_data
2597 ${MAKE:-make} -t always once
2598 if test -f always ; then
2599 echo "no (case 1)" > ../conftest.tmp
2600 elif test ! -f always.out ; then
2601 echo "no (case 2)" > ../conftest.tmp
2602 elif test ! -f once.out ; then
2603 echo "no (case 3)" > ../conftest.tmp
2604 elif ! cmp -s always.out once.out ; then
2605 echo "no (case 4)" > ../conftest.tmp
2606 diff always.out once.out
2608 cf_check="`cat always.out`"
2609 if test "x$cf_check" != "x$cf_data" ; then
2610 echo "no (case 5)" > ../conftest.tmp
2612 echo yes > ../conftest.tmp
2620 cf_cv_make_PHONY="`cat conftest.tmp`"
2625 test "x$cf_cv_make_PHONY" = xyes && MAKE_PHONY=
2626 test "x$cf_cv_make_PHONY" != xyes && MAKE_NO_PHONY=
2627 AC_SUBST(MAKE_NO_PHONY)
2628 AC_SUBST(MAKE_PHONY)
2630 dnl ---------------------------------------------------------------------------
2631 dnl CF_MAKE_TAGS version: 6 updated: 2010/10/23 15:52:32
2633 dnl Generate tags/TAGS targets for makefiles. Do not generate TAGS if we have
2634 dnl a monocase filesystem.
2635 AC_DEFUN([CF_MAKE_TAGS],[
2636 AC_REQUIRE([CF_MIXEDCASE_FILENAMES])
2638 AC_CHECK_PROGS(CTAGS, exctags ctags)
2639 AC_CHECK_PROGS(ETAGS, exetags etags)
2641 AC_CHECK_PROG(MAKE_LOWER_TAGS, ${CTAGS:-ctags}, yes, no)
2643 if test "$cf_cv_mixedcase" = yes ; then
2644 AC_CHECK_PROG(MAKE_UPPER_TAGS, ${ETAGS:-etags}, yes, no)
2649 if test "$MAKE_UPPER_TAGS" = yes ; then
2655 if test "$MAKE_LOWER_TAGS" = yes ; then
2664 AC_SUBST(MAKE_UPPER_TAGS)
2665 AC_SUBST(MAKE_LOWER_TAGS)
2667 dnl ---------------------------------------------------------------------------
2668 dnl CF_MIXEDCASE_FILENAMES version: 9 updated: 2021/01/01 16:53:59
2669 dnl ----------------------
2670 dnl Check if the file-system supports mixed-case filenames. If we're able to
2671 dnl create a lowercase name and see it as uppercase, it doesn't support that.
2672 AC_DEFUN([CF_MIXEDCASE_FILENAMES],
2674 AC_CACHE_CHECK(if filesystem supports mixed-case filenames,cf_cv_mixedcase,[
2675 if test "$cross_compiling" = yes ; then
2676 case "$target_alias" in
2677 (*-os2-emx*|*-msdosdjgpp*|*-cygwin*|*-msys*|*-mingw*|*-uwin*|darwin*)
2685 rm -f conftest CONFTEST
2687 if test -f CONFTEST ; then
2692 rm -f conftest CONFTEST
2695 test "$cf_cv_mixedcase" = yes && AC_DEFINE(MIXEDCASE_FILENAMES,1,[Define to 1 if filesystem supports mixed-case filenames.])
2697 dnl ---------------------------------------------------------------------------
2698 dnl CF_MKSTEMP version: 11 updated: 2021/01/01 13:31:04
2700 dnl Check for a working mkstemp. This creates two files, checks that they are
2701 dnl successfully created and distinct (AmigaOS apparently fails on the last).
2702 AC_DEFUN([CF_MKSTEMP],[
2706 AC_CACHE_CHECK(for working mkstemp, cf_cv_func_mkstemp,[
2709 #include <sys/types.h>
2710 #ifdef HAVE_UNISTD_H
2716 #include <sys/stat.h>
2719 char *tmpl = "conftestXXXXXX";
2727 for (n = 0; n < 2; ++n) {
2728 strcpy(name[n], tmpl);
2729 if ((fd = mkstemp(name[n])) >= 0) {
2730 if (!strcmp(name[n], tmpl)
2731 || stat(name[n], &sb) != 0
2732 || (sb.st_mode & S_IFMT) != S_IFREG
2733 || (sb.st_mode & 077) != 0) {
2740 && !strcmp(name[0], name[1]))
2742 ${cf_cv_main_return:-return}(result);
2744 ],[cf_cv_func_mkstemp=yes
2745 ],[cf_cv_func_mkstemp=no
2746 ],[cf_cv_func_mkstemp=maybe])
2748 if test "x$cf_cv_func_mkstemp" = xmaybe ; then
2749 AC_CHECK_FUNC(mkstemp)
2751 if test "x$cf_cv_func_mkstemp" = xyes || test "x$ac_cv_func_mkstemp" = xyes ; then
2752 AC_DEFINE(HAVE_MKSTEMP,1,[Define to 1 if mkstemp() is available and working.])
2755 dnl ---------------------------------------------------------------------------
2756 dnl CF_MSG_LOG version: 5 updated: 2010/10/23 15:52:32
2758 dnl Write a debug message to config.log, along with the line number in the
2759 dnl configure script.
2760 AC_DEFUN([CF_MSG_LOG],[
2761 echo "${as_me:-configure}:__oline__: testing $* ..." 1>&AC_FD_CC
2763 dnl ---------------------------------------------------------------------------
2764 dnl CF_NCURSES_ADDON version: 6 updated: 2021/01/04 19:33:05
2765 dnl ----------------
2766 dnl Configure an ncurses add-on, built outside the ncurses tree.
2767 AC_DEFUN([CF_NCURSES_ADDON],[
2768 AC_REQUIRE([CF_NCURSES_CONFIG])
2770 AC_PROVIDE([CF_SUBST_NCURSES_VERSION])
2772 AC_MSG_CHECKING(if you want wide-character code)
2773 AC_ARG_ENABLE(widec,
2774 [ --enable-widec compile with wide-char/UTF-8 code],
2775 [with_widec=$enableval],
2777 AC_MSG_RESULT($with_widec)
2778 if test "$with_widec" = yes ; then
2780 CF_NCURSES_CONFIG(ncursesw)
2782 CF_NCURSES_CONFIG(ncurses)
2785 if test "$NCURSES_CONFIG_PKG" != none ; then
2786 cf_version=`$PKG_CONFIG --modversion $NCURSES_CONFIG_PKG 2>/dev/null`
2788 NCURSES_MAJOR=`echo "$cf_version" | sed -e 's/\..*//'`
2789 NCURSES_MINOR=`echo "$cf_version" | sed -e 's/^[[0-9]][[0-9]]*\.//' -e 's/\..*//'`
2790 NCURSES_PATCH=`echo "$cf_version" | sed -e 's/^[[0-9]][[0-9]]*\.[[0-9]][[0-9]]*\.//'`
2792 cf_cv_abi_version=`$PKG_CONFIG --variable=abi_version $NCURSES_CONFIG_PKG 2>/dev/null`
2793 if test -z "$cf_cv_abi_version"
2795 cf_cv_abi_version=`$PKG_CONFIG --variable=major_version $NCURSES_CONFIG_PKG 2>/dev/null`
2798 elif test "$NCURSES_CONFIG" != none ; then
2800 cf_version=`$NCURSES_CONFIG --version 2>/dev/null`
2802 NCURSES_MAJOR=`echo "$cf_version" | sed -e 's/\..*//'`
2803 NCURSES_MINOR=`echo "$cf_version" | sed -e 's/^[[0-9]][[0-9]]*\.//' -e 's/\..*//'`
2804 NCURSES_PATCH=`echo "$cf_version" | sed -e 's/^[[0-9]][[0-9]]*\.[[0-9]][[0-9]]*\.//'`
2806 # ABI version is not available from headers
2807 cf_cv_abi_version=`$NCURSES_CONFIG --abi-version 2>/dev/null`
2811 for cf_name in MAJOR MINOR PATCH
2813 cat >conftest.$ac_ext <<CF_EOF
2814 #include <${cf_cv_ncurses_header:-curses.h}>
2815 AUTOCONF_$cf_name NCURSES_VERSION_$cf_name
2817 cf_try="$ac_cpp conftest.$ac_ext 2>&5 | fgrep AUTOCONF_$cf_name >conftest.out"
2819 if test -f conftest.out ; then
2820 cf_result=`sed -e "s/^.*AUTOCONF_${cf_name}[[ ]][[ ]]*//" conftest.out`
2821 eval NCURSES_$cf_name=\"$cf_result\"
2822 # cat conftest.$ac_ext
2827 cf_cv_abi_version=${NCURSES_MAJOR}
2831 cf_cv_rel_version=${NCURSES_MAJOR}.${NCURSES_MINOR}
2833 dnl Show the computed version, for logging
2834 cf_cv_timestamp=`date`
2836 AC_MSG_RESULT(Configuring NCURSES $cf_cv_rel_version ABI $cf_cv_abi_version ($cf_cv_timestamp))
2838 dnl We need these values in the generated headers
2839 AC_SUBST(NCURSES_MAJOR)
2840 AC_SUBST(NCURSES_MINOR)
2841 AC_SUBST(NCURSES_PATCH)
2843 dnl We need these values in the generated makefiles
2844 AC_SUBST(cf_cv_rel_version)
2845 AC_SUBST(cf_cv_abi_version)
2847 dnl FIXME - not needed for Ada95
2848 AC_SUBST(cf_cv_builtin_bool)
2849 AC_SUBST(cf_cv_header_stdbool_h)
2850 AC_SUBST(cf_cv_type_of_bool)dnl
2853 dnl ---------------------------------------------------------------------------
2854 dnl CF_NCURSES_CC_CHECK version: 5 updated: 2020/12/31 20:19:42
2855 dnl -------------------
2856 dnl Check if we can compile with ncurses' header file
2857 dnl $1 is the cache variable to set
2858 dnl $2 is the header-file to include
2859 dnl $3 is the root name (ncurses or ncursesw)
2860 AC_DEFUN([CF_NCURSES_CC_CHECK],[
2862 ]ifelse($3,ncursesw,[
2863 #define _XOPEN_SOURCE_EXTENDED
2864 #undef HAVE_LIBUTF8_H /* in case we used CF_UTF8_LIB */
2865 #define HAVE_LIBUTF8_H /* to force ncurses' header file to use cchar_t */
2868 #ifdef NCURSES_VERSION
2869 ]ifelse($3,ncursesw,[
2874 printf("%s\\n", NCURSES_VERSION);
2886 dnl ---------------------------------------------------------------------------
2887 dnl CF_NCURSES_CONFIG version: 28 updated: 2021/08/28 15:20:37
2888 dnl -----------------
2889 dnl Tie together the configure-script macros for ncurses, preferring these in
2891 dnl a) ".pc" files for pkg-config, using $NCURSES_CONFIG_PKG
2892 dnl b) the "-config" script from ncurses, using $NCURSES_CONFIG
2893 dnl c) just plain libraries
2895 dnl $1 is the root library name (default: "ncurses")
2896 AC_DEFUN([CF_NCURSES_CONFIG],[
2897 AC_REQUIRE([CF_PKG_CONFIG])
2898 cf_ncuconfig_root=ifelse($1,,ncurses,$1)
2899 cf_have_ncuconfig=no
2901 if test "x${PKG_CONFIG:=none}" != xnone; then
2902 AC_MSG_CHECKING(pkg-config for $cf_ncuconfig_root)
2903 if "$PKG_CONFIG" --exists $cf_ncuconfig_root ; then
2906 AC_MSG_CHECKING(if the $cf_ncuconfig_root package files work)
2907 cf_have_ncuconfig=unknown
2909 cf_save_CFLAGS="$CFLAGS"
2910 cf_save_CPPFLAGS="$CPPFLAGS"
2911 cf_save_LIBS="$LIBS"
2913 cf_pkg_cflags="`$PKG_CONFIG --cflags $cf_ncuconfig_root`"
2914 cf_pkg_libs="`$PKG_CONFIG --libs $cf_ncuconfig_root`"
2916 # while -W for passing linker flags is prevalent, it is not "standard".
2917 # At least one wrapper for c89/c99 (in Apple's xcode) has its own
2918 # incompatible _and_ non-standard -W option which gives an error. Work
2919 # around that pitfall.
2920 case "x${CC}@@${cf_pkg_libs}@${cf_pkg_cflags}" in
2922 CF_ADD_CFLAGS($cf_pkg_cflags)
2923 CF_ADD_LIBS($cf_pkg_libs)
2925 AC_TRY_LINK([#include <${cf_cv_ncurses_header:-curses.h}>],
2926 [initscr(); mousemask(0,0); tigetstr((char *)0);],
2927 [AC_TRY_RUN([#include <${cf_cv_ncurses_header:-curses.h}>
2929 { const char *xx = curses_version(); return (xx == 0); }],
2930 [cf_test_ncuconfig=yes],
2931 [cf_test_ncuconfig=no],
2932 [cf_test_ncuconfig=maybe])],
2933 [cf_test_ncuconfig=no])
2935 CFLAGS="$cf_save_CFLAGS"
2936 CPPFLAGS="$cf_save_CPPFLAGS"
2937 LIBS="$cf_save_LIBS"
2939 if test "x$cf_test_ncuconfig" != xyes; then
2940 cf_temp=`echo "x$cf_pkg_cflags" | sed -e s/^x// -e 's/-W[[^ ]]*//g'`
2941 cf_pkg_cflags="$cf_temp"
2942 cf_temp=`echo "x$cf_pkg_libs" | sed -e s/^x// -e 's/-W[[^ ]]*//g'`
2943 cf_pkg_libs="$cf_temp"
2948 CF_APPEND_CFLAGS($cf_pkg_cflags)
2949 CF_ADD_LIBS($cf_pkg_libs)
2951 AC_TRY_LINK([#include <${cf_cv_ncurses_header:-curses.h}>],
2952 [initscr(); mousemask(0,0); tigetstr((char *)0);],
2953 [AC_TRY_RUN([#include <${cf_cv_ncurses_header:-curses.h}>
2955 { const char *xx = curses_version(); return (xx == 0); }],
2956 [cf_have_ncuconfig=yes],
2957 [cf_have_ncuconfig=no],
2958 [cf_have_ncuconfig=maybe])],
2959 [cf_have_ncuconfig=no])
2960 AC_MSG_RESULT($cf_have_ncuconfig)
2961 test "$cf_have_ncuconfig" = maybe && cf_have_ncuconfig=yes
2962 if test "$cf_have_ncuconfig" != "yes"
2964 CPPFLAGS="$cf_save_CPPFLAGS"
2965 LIBS="$cf_save_LIBS"
2966 NCURSES_CONFIG_PKG=none
2968 AC_DEFINE(NCURSES,1,[Define to 1 if we are using ncurses headers/libraries])
2969 NCURSES_CONFIG_PKG=$cf_ncuconfig_root
2975 NCURSES_CONFIG_PKG=none
2978 NCURSES_CONFIG_PKG=none
2981 if test "x$cf_have_ncuconfig" = "xno"; then
2982 cf_ncurses_config="${cf_ncuconfig_root}${NCURSES_CONFIG_SUFFIX}-config"; echo "Looking for ${cf_ncurses_config}"
2984 CF_ACVERSION_CHECK(2.52,
2985 [AC_CHECK_TOOLS(NCURSES_CONFIG, ${cf_ncurses_config} ${cf_ncuconfig_root}6-config ${cf_ncuconfig_root}6-config ${cf_ncuconfig_root}5-config, none)],
2986 [AC_PATH_PROGS(NCURSES_CONFIG, ${cf_ncurses_config} ${cf_ncuconfig_root}6-config ${cf_ncuconfig_root}6-config ${cf_ncuconfig_root}5-config, none)])
2988 if test "$NCURSES_CONFIG" != none ; then
2990 CF_APPEND_CFLAGS(`$NCURSES_CONFIG --cflags`)
2991 CF_ADD_LIBS(`$NCURSES_CONFIG --libs`)
2993 # even with config script, some packages use no-override for curses.h
2994 CF_CURSES_HEADER(ifelse($1,,ncurses,$1))
2996 dnl like CF_NCURSES_CPPFLAGS
2997 AC_DEFINE(NCURSES,1,[Define to 1 if we are using ncurses headers/libraries])
2999 dnl like CF_NCURSES_LIBS
3000 CF_UPPER(cf_nculib_ROOT,HAVE_LIB$cf_ncuconfig_root)
3001 AC_DEFINE_UNQUOTED($cf_nculib_ROOT)
3003 dnl like CF_NCURSES_VERSION
3004 cf_cv_ncurses_version="`$NCURSES_CONFIG --version`"
3008 CF_NCURSES_CPPFLAGS(ifelse($1,,ncurses,$1))
3009 CF_NCURSES_LIBS(ifelse($1,,ncurses,$1))
3016 dnl ---------------------------------------------------------------------------
3017 dnl CF_NCURSES_CPPFLAGS version: 22 updated: 2021/01/02 09:31:20
3018 dnl -------------------
3019 dnl Look for the SVr4 curses clone 'ncurses' in the standard places, adjusting
3020 dnl the CPPFLAGS variable so we can include its header.
3022 dnl The header files may be installed as either curses.h, or ncurses.h (would
3023 dnl be obsolete, except that some packagers prefer this name to distinguish it
3024 dnl from a "native" curses implementation). If not installed for overwrite,
3025 dnl the curses.h file would be in an ncurses subdirectory (e.g.,
3026 dnl /usr/include/ncurses), but someone may have installed overwriting the
3027 dnl vendor's curses. Only very old versions (pre-1.9.2d, the first autoconf'd
3028 dnl version) of ncurses don't define either __NCURSES_H or NCURSES_VERSION in
3031 dnl If the installer has set $CFLAGS or $CPPFLAGS so that the ncurses header
3032 dnl is already in the include-path, don't even bother with this, since we cannot
3033 dnl easily determine which file it is. In this case, it has to be <curses.h>.
3035 dnl The optional parameter gives the root name of the library, in case it is
3036 dnl not installed as the default curses library. That is how the
3037 dnl wide-character version of ncurses is installed.
3038 AC_DEFUN([CF_NCURSES_CPPFLAGS],
3039 [AC_REQUIRE([CF_WITH_CURSES_DIR])
3041 AC_PROVIDE([CF_CURSES_CPPFLAGS])dnl
3042 cf_ncuhdr_root=ifelse($1,,ncurses,$1)
3044 test -n "$cf_cv_curses_dir" && \
3045 test "$cf_cv_curses_dir" != "no" && { \
3046 CF_ADD_INCDIR($cf_cv_curses_dir/include/$cf_ncuhdr_root)
3049 AC_CACHE_CHECK(for $cf_ncuhdr_root header in include-path, cf_cv_ncurses_h,[
3050 cf_header_list="$cf_ncuhdr_root/curses.h $cf_ncuhdr_root/ncurses.h"
3051 { test "$cf_ncuhdr_root" = ncurses || test "$cf_ncuhdr_root" = ncursesw; } && cf_header_list="$cf_header_list curses.h ncurses.h"
3052 for cf_header in $cf_header_list
3054 CF_NCURSES_CC_CHECK(cf_cv_ncurses_h,$cf_header,$1)
3055 test "$cf_cv_ncurses_h" != no && break
3062 # some applications need this, but should check for NCURSES_VERSION
3063 AC_DEFINE(NCURSES,1,[Define to 1 if we are using ncurses headers/libraries])
3067 dnl ---------------------------------------------------------------------------
3068 dnl CF_NCURSES_HEADER version: 7 updated: 2021/01/04 19:33:05
3069 dnl -----------------
3070 dnl Find a "curses" header file, e.g,. "curses.h", or one of the more common
3071 dnl variations of ncurses' installs.
3073 dnl See also CF_CURSES_HEADER, which sets the same cache variable.
3074 AC_DEFUN([CF_NCURSES_HEADER],[
3076 if test "$cf_cv_ncurses_h" != no ; then
3077 cf_cv_ncurses_header=$cf_cv_ncurses_h
3080 AC_CACHE_CHECK(for $cf_ncuhdr_root include-path, cf_cv_ncurses_h2,[
3081 test -n "$verbose" && echo
3082 CF_HEADER_PATH(cf_search,$cf_ncuhdr_root)
3083 test -n "$verbose" && echo "search path $cf_search"
3084 cf_save2_CPPFLAGS="$CPPFLAGS"
3085 for cf_incdir in $cf_search
3087 CF_ADD_INCDIR($cf_incdir)
3092 CF_NCURSES_CC_CHECK(cf_cv_ncurses_h2,$cf_header,$1)
3093 if test "$cf_cv_ncurses_h2" != no ; then
3094 cf_cv_ncurses_h2=$cf_incdir/$cf_header
3095 test -n "$verbose" && echo $ECHO_N " ... found $ECHO_C" 1>&AC_FD_MSG
3098 test -n "$verbose" && echo " ... tested $cf_incdir/$cf_header" 1>&AC_FD_MSG
3100 CPPFLAGS="$cf_save2_CPPFLAGS"
3101 test "$cf_cv_ncurses_h2" != no && break
3103 test "$cf_cv_ncurses_h2" = no && AC_MSG_ERROR(not found)
3106 CF_DIRNAME(cf_1st_incdir,$cf_cv_ncurses_h2)
3107 cf_cv_ncurses_header="`basename "$cf_cv_ncurses_h2"`"
3108 if test "`basename "$cf_1st_incdir"`" = "$cf_ncuhdr_root" ; then
3109 cf_cv_ncurses_header="$cf_ncuhdr_root/$cf_cv_ncurses_header"
3111 CF_ADD_INCDIR($cf_1st_incdir)
3115 # Set definitions to allow ifdef'ing for ncurses.h
3117 case "$cf_cv_ncurses_header" in
3119 AC_DEFINE(HAVE_NCURSES_H,1,[Define to 1 if we have ncurses.h])
3123 case "$cf_cv_ncurses_header" in
3124 (ncurses/curses.h|ncurses/ncurses.h)
3125 AC_DEFINE(HAVE_NCURSES_NCURSES_H,1,[Define to 1 if we have ncurses/ncurses.h])
3127 (ncursesw/curses.h|ncursesw/ncurses.h)
3128 AC_DEFINE(HAVE_NCURSESW_NCURSES_H,1,[Define to 1 if we have ncursesw/ncurses.h])
3133 dnl ---------------------------------------------------------------------------
3134 dnl CF_NCURSES_LIBS version: 21 updated: 2021/09/04 06:37:12
3136 dnl Look for the ncurses library. This is a little complicated on Linux,
3137 dnl because it may be linked with the gpm (general purpose mouse) library.
3138 dnl Some distributions have gpm linked with (bsd) curses, which makes it
3139 dnl unusable with ncurses. However, we don't want to link with gpm unless
3140 dnl ncurses has a dependency, since gpm is normally set up as a shared library,
3141 dnl and the linker will record a dependency.
3143 dnl The optional parameter gives the root name of the library, in case it is
3144 dnl not installed as the default curses library. That is how the
3145 dnl wide-character version of ncurses is installed.
3146 AC_DEFUN([CF_NCURSES_LIBS],
3147 [AC_REQUIRE([CF_NCURSES_CPPFLAGS])
3149 cf_nculib_root=ifelse($1,,ncurses,$1)
3150 # This works, except for the special case where we find gpm, but
3151 # ncurses is in a nonstandard location via $LIBS, and we really want
3154 cf_ncurses_SAVE="$LIBS"
3155 AC_CHECK_LIB(gpm,Gpm_Open,
3156 [AC_CHECK_LIB(gpm,initscr,
3157 [LIBS="$cf_ncurses_SAVE"],
3158 [cf_ncurses_LIBS="-lgpm"])])
3162 # This is only necessary if you are linking against an obsolete
3163 # version of ncurses (but it should do no harm, since it is static).
3164 if test "$cf_nculib_root" = ncurses ; then
3165 AC_CHECK_LIB(mytinfo,tgoto,[cf_ncurses_LIBS="-lmytinfo $cf_ncurses_LIBS"])
3170 CF_ADD_LIBS($cf_ncurses_LIBS)
3172 if test -n "$cf_cv_curses_dir" && test "$cf_cv_curses_dir" != "no"
3174 CF_ADD_LIBS(-l$cf_nculib_root)
3176 CF_FIND_LIBRARY($cf_nculib_root,$cf_nculib_root,
3177 [#include <${cf_cv_ncurses_header:-curses.h}>],
3182 if test -n "$cf_ncurses_LIBS" ; then
3183 AC_MSG_CHECKING(if we can link $cf_nculib_root without $cf_ncurses_LIBS)
3184 cf_ncurses_SAVE="$LIBS"
3185 for p in $cf_ncurses_LIBS ; do
3186 q=`echo "$LIBS" | sed -e "s%$p %%" -e "s%$p$%%"`
3187 if test "$q" != "$LIBS" ; then
3191 AC_TRY_LINK([#include <${cf_cv_ncurses_header:-curses.h}>],
3192 [initscr(); mousemask(0,0); tigetstr((char *)0);],
3193 [AC_MSG_RESULT(yes)],
3195 LIBS="$cf_ncurses_SAVE"])
3198 CF_UPPER(cf_nculib_ROOT,HAVE_LIB$cf_nculib_root)
3199 AC_DEFINE_UNQUOTED($cf_nculib_ROOT)
3201 dnl ---------------------------------------------------------------------------
3202 dnl CF_NCURSES_VERSION version: 16 updated: 2020/12/31 20:19:42
3203 dnl ------------------
3204 dnl Check for the version of ncurses, to aid in reporting bugs, etc.
3205 dnl Call CF_CURSES_CPPFLAGS first, or CF_NCURSES_CPPFLAGS. We don't use
3206 dnl AC_REQUIRE since that does not work with the shell's if/then/else/fi.
3207 AC_DEFUN([CF_NCURSES_VERSION],
3209 AC_REQUIRE([CF_CURSES_CPPFLAGS])dnl
3210 AC_CACHE_CHECK(for ncurses version, cf_cv_ncurses_version,[
3211 cf_cv_ncurses_version=no
3213 rm -f "$cf_tempfile"
3215 #include <${cf_cv_ncurses_header:-curses.h}>
3219 FILE *fp = fopen("$cf_tempfile", "w");
3220 #ifdef NCURSES_VERSION
3221 # ifdef NCURSES_VERSION_PATCH
3222 fprintf(fp, "%s.%d\\n", NCURSES_VERSION, NCURSES_VERSION_PATCH);
3224 fprintf(fp, "%s\\n", NCURSES_VERSION);
3228 fprintf(fp, "old\\n");
3233 ${cf_cv_main_return:-return}(0);
3235 cf_cv_ncurses_version=`cat $cf_tempfile`],,[
3237 # This will not work if the preprocessor splits the line after the
3238 # Autoconf token. The 'unproto' program does that.
3239 cat > "conftest.$ac_ext" <<EOF
3240 #include <${cf_cv_ncurses_header:-curses.h}>
3242 #ifdef NCURSES_VERSION
3243 Autoconf NCURSES_VERSION
3251 cf_try="$ac_cpp conftest.$ac_ext 2>&AC_FD_CC | grep '^Autoconf ' >conftest.out"
3253 if test -f conftest.out ; then
3254 cf_out=`sed -e 's%^Autoconf %%' -e 's%^[[^"]]*"%%' -e 's%".*%%' conftest.out`
3255 test -n "$cf_out" && cf_cv_ncurses_version="$cf_out"
3259 rm -f "$cf_tempfile"
3261 test "$cf_cv_ncurses_version" = no || AC_DEFINE(NCURSES,1,[Define to 1 if we are using ncurses headers/libraries])
3263 dnl ---------------------------------------------------------------------------
3264 dnl CF_OBJ_SUBDIR version: 8 updated: 2021/01/01 13:31:04
3266 dnl Compute the object-directory name from the given model name
3267 AC_DEFUN([CF_OBJ_SUBDIR],
3270 (libtool) $2='obj_lo' ;;
3271 (normal) $2='objects' ;;
3272 (debug) $2='obj_g' ;;
3273 (profile) $2='obj_p' ;;
3275 case "$cf_cv_system_name" in
3283 dnl ---------------------------------------------------------------------------
3284 dnl CF_PATHSEP version: 8 updated: 2021/01/01 13:31:04
3286 dnl Provide a value for the $PATH and similar separator (or amend the value
3287 dnl as provided in autoconf 2.5x).
3288 AC_DEFUN([CF_PATHSEP],
3290 AC_MSG_CHECKING(for PATH separator)
3291 case "$cf_cv_system_name" in
3292 (os2*) PATH_SEPARATOR=';' ;;
3293 (*) ${PATH_SEPARATOR:=':'} ;;
3295 ifelse([$1],,,[$1=$PATH_SEPARATOR])
3296 AC_SUBST(PATH_SEPARATOR)
3297 AC_MSG_RESULT($PATH_SEPARATOR)
3299 dnl ---------------------------------------------------------------------------
3300 dnl CF_PATH_SYNTAX version: 18 updated: 2020/12/31 18:40:20
3302 dnl Check the argument to see that it looks like a pathname. Rewrite it if it
3303 dnl begins with one of the prefix/exec_prefix variables, and then again if the
3304 dnl result begins with 'NONE'. This is necessary to work around autoconf's
3305 dnl delayed evaluation of those symbols.
3306 AC_DEFUN([CF_PATH_SYNTAX],[
3307 if test "x$prefix" != xNONE; then
3308 cf_path_syntax="$prefix"
3310 cf_path_syntax="$ac_default_prefix"
3314 (.\[$]\(*\)*|.\'*\'*)
3318 (.[[a-zA-Z]]:[[\\/]]*) # OS/2 EMX
3320 (.\[$]\{*prefix\}*|.\[$]\{*dir\}*)
3324 $1=`echo "[$]$1" | sed -e s%NONE%$cf_path_syntax%`
3329 $1=`echo "[$]$1" | sed -e s%NONE%$cf_path_syntax%`
3332 ifelse([$2],,[AC_MSG_ERROR([expected a pathname, not \"[$]$1\"])],$2)
3336 dnl ---------------------------------------------------------------------------
3337 dnl CF_PKG_CONFIG version: 12 updated: 2021/10/10 20:18:09
3339 dnl Check for the package-config program, unless disabled by command-line.
3341 dnl Sets $PKG_CONFIG to the pathname of the pkg-config program.
3342 AC_DEFUN([CF_PKG_CONFIG],
3344 AC_MSG_CHECKING(if you want to use pkg-config)
3345 AC_ARG_WITH(pkg-config,
3346 [ --with-pkg-config{=path} enable/disable use of pkg-config],
3347 [cf_pkg_config=$withval],
3348 [cf_pkg_config=yes])
3349 AC_MSG_RESULT($cf_pkg_config)
3351 case "$cf_pkg_config" in
3356 CF_ACVERSION_CHECK(2.52,
3357 [AC_PATH_TOOL(PKG_CONFIG, pkg-config, none)],
3358 [AC_PATH_PROG(PKG_CONFIG, pkg-config, none)])
3365 test -z "$PKG_CONFIG" && PKG_CONFIG=none
3366 if test "$PKG_CONFIG" != none ; then
3367 CF_PATH_SYNTAX(PKG_CONFIG)
3368 elif test "x$cf_pkg_config" != xno ; then
3369 AC_MSG_WARN(pkg-config is not installed)
3372 AC_SUBST(PKG_CONFIG)
3374 dnl ---------------------------------------------------------------------------
3375 dnl CF_POSIX_C_SOURCE version: 11 updated: 2018/12/31 20:46:17
3376 dnl -----------------
3377 dnl Define _POSIX_C_SOURCE to the given level, and _POSIX_SOURCE if needed.
3379 dnl POSIX.1-1990 _POSIX_SOURCE
3380 dnl POSIX.1-1990 and _POSIX_SOURCE and
3381 dnl POSIX.2-1992 C-Language _POSIX_C_SOURCE=2
3383 dnl POSIX.1b-1993 _POSIX_C_SOURCE=199309L
3384 dnl POSIX.1c-1996 _POSIX_C_SOURCE=199506L
3385 dnl X/Open 2000 _POSIX_C_SOURCE=200112L
3388 dnl $1 is the nominal value for _POSIX_C_SOURCE
3389 AC_DEFUN([CF_POSIX_C_SOURCE],
3390 [AC_REQUIRE([CF_POSIX_VISIBLE])dnl
3392 if test "$cf_cv_posix_visible" = no; then
3394 cf_POSIX_C_SOURCE=ifelse([$1],,199506L,[$1])
3396 cf_save_CFLAGS="$CFLAGS"
3397 cf_save_CPPFLAGS="$CPPFLAGS"
3399 CF_REMOVE_DEFINE(cf_trim_CFLAGS,$cf_save_CFLAGS,_POSIX_C_SOURCE)
3400 CF_REMOVE_DEFINE(cf_trim_CPPFLAGS,$cf_save_CPPFLAGS,_POSIX_C_SOURCE)
3402 AC_CACHE_CHECK(if we should define _POSIX_C_SOURCE,cf_cv_posix_c_source,[
3403 CF_MSG_LOG(if the symbol is already defined go no further)
3404 AC_TRY_COMPILE([#include <sys/types.h>],[
3405 #ifndef _POSIX_C_SOURCE
3408 [cf_cv_posix_c_source=no],
3409 [cf_want_posix_source=no
3410 case .$cf_POSIX_C_SOURCE in
3412 cf_cv_posix_c_source="-D_POSIX_C_SOURCE=$cf_POSIX_C_SOURCE"
3415 cf_cv_posix_c_source="-D_POSIX_C_SOURCE=$cf_POSIX_C_SOURCE"
3416 cf_want_posix_source=yes
3419 cf_want_posix_source=yes
3422 if test "$cf_want_posix_source" = yes ; then
3423 AC_TRY_COMPILE([#include <sys/types.h>],[
3424 #ifdef _POSIX_SOURCE
3427 cf_cv_posix_c_source="$cf_cv_posix_c_source -D_POSIX_SOURCE")
3429 CF_MSG_LOG(ifdef from value $cf_POSIX_C_SOURCE)
3430 CFLAGS="$cf_trim_CFLAGS"
3431 CPPFLAGS="$cf_trim_CPPFLAGS"
3432 CF_APPEND_TEXT(CPPFLAGS,$cf_cv_posix_c_source)
3433 CF_MSG_LOG(if the second compile does not leave our definition intact error)
3434 AC_TRY_COMPILE([#include <sys/types.h>],[
3435 #ifndef _POSIX_C_SOURCE
3438 [cf_cv_posix_c_source=no])
3439 CFLAGS="$cf_save_CFLAGS"
3440 CPPFLAGS="$cf_save_CPPFLAGS"
3444 if test "$cf_cv_posix_c_source" != no ; then
3445 CFLAGS="$cf_trim_CFLAGS"
3446 CPPFLAGS="$cf_trim_CPPFLAGS"
3447 CF_ADD_CFLAGS($cf_cv_posix_c_source)
3450 fi # cf_cv_posix_visible
3453 dnl ---------------------------------------------------------------------------
3454 dnl CF_POSIX_VISIBLE version: 1 updated: 2018/12/31 20:46:17
3455 dnl ----------------
3456 dnl POSIX documents test-macros which an application may set before any system
3457 dnl headers are included to make features available.
3459 dnl Some BSD platforms (originally FreeBSD, but copied by a few others)
3460 dnl diverged from POSIX in 2002 by setting symbols which make all of the most
3461 dnl recent features visible in the system header files unless the application
3462 dnl overrides the corresponding test-macros. Doing that introduces portability
3465 dnl This macro makes a special check for the symbols used for this, to avoid a
3466 dnl conflicting definition.
3467 AC_DEFUN([CF_POSIX_VISIBLE],
3469 AC_CACHE_CHECK(if the POSIX test-macros are already defined,cf_cv_posix_visible,[
3470 AC_TRY_COMPILE([#include <stdio.h>],[
3471 #if defined(__POSIX_VISIBLE) && ((__POSIX_VISIBLE - 0L) > 0) \
3472 && defined(__XSI_VISIBLE) && ((__XSI_VISIBLE - 0L) > 0) \
3473 && defined(__BSD_VISIBLE) && ((__BSD_VISIBLE - 0L) > 0) \
3474 && defined(__ISO_C_VISIBLE) && ((__ISO_C_VISIBLE - 0L) > 0)
3475 #error conflicting symbols found
3477 ],[cf_cv_posix_visible=no],[cf_cv_posix_visible=yes])
3480 dnl ---------------------------------------------------------------------------
3481 dnl CF_PROG_AR version: 1 updated: 2009/01/01 20:15:22
3483 dnl Check for archiver "ar".
3484 AC_DEFUN([CF_PROG_AR],[
3485 AC_CHECK_TOOL(AR, ar, ar)
3487 dnl ---------------------------------------------------------------------------
3488 dnl CF_PROG_AWK version: 1 updated: 2006/09/16 11:40:59
3490 dnl Check for awk, ensure that the check found something.
3491 AC_DEFUN([CF_PROG_AWK],
3494 test -z "$AWK" && AC_MSG_ERROR(No awk program found)
3496 dnl ---------------------------------------------------------------------------
3497 dnl CF_PROG_CC version: 5 updated: 2019/12/31 08:53:54
3499 dnl standard check for CC, plus followup sanity checks
3500 dnl $1 = optional parameter to pass to AC_PROG_CC to specify compiler name
3501 AC_DEFUN([CF_PROG_CC],[
3502 CF_ACVERSION_CHECK(2.53,
3503 [AC_MSG_WARN(this will incorrectly handle gnatgcc choice)
3504 AC_REQUIRE([AC_PROG_CC])],
3506 ifelse($1,,[AC_PROG_CC],[AC_PROG_CC($1)])
3508 CF_ACVERSION_CHECK(2.52,
3513 dnl ---------------------------------------------------------------------------
3514 dnl CF_PROG_CC_C_O version: 6 updated: 2021/01/01 13:31:04
3516 dnl Analogous to AC_PROG_CC_C_O, but more useful: tests only $CC, ensures that
3517 dnl the output file can be renamed, and allows for a shell variable that can
3518 dnl be used later. The parameter is either CC or CXX. The result is the
3520 dnl $cf_cv_prog_CC_c_o
3521 dnl $cf_cv_prog_CXX_c_o
3524 dnl $2 = compiler options, if any
3525 AC_DEFUN([CF_PROG_CC_C_O],
3526 [AC_REQUIRE([AC_PROG_CC])dnl
3527 AC_MSG_CHECKING([whether [$]$1 understands -c and -o together])
3528 AC_CACHE_VAL(cf_cv_prog_$1_c_o,
3530 cat > conftest.$ac_ext <<CF_EOF
3533 ${cf_cv_main_return:-return}(0);
3536 # We do the test twice because some compilers refuse to overwrite an
3537 # existing .o file with -o, though they will create one.
3538 ac_try='[$]$1 $2 -c conftest.$ac_ext -o conftest2.$ac_objext >&AC_FD_CC'
3539 if AC_TRY_EVAL(ac_try) &&
3540 test -f conftest2.$ac_objext && AC_TRY_EVAL(ac_try);
3542 eval cf_cv_prog_$1_c_o=yes
3544 eval cf_cv_prog_$1_c_o=no
3548 if test "$cf_cv_prog_$1_c_o" = yes; then
3549 AC_MSG_RESULT([yes])
3554 dnl ---------------------------------------------------------------------------
3555 dnl CF_PROG_EGREP version: 2 updated: 2015/04/18 08:56:57
3557 dnl AC_PROG_EGREP was introduced in autoconf 2.53.
3558 dnl This macro adds a check to ensure the script found something.
3559 AC_DEFUN([CF_PROG_EGREP],
3560 [AC_CACHE_CHECK([for egrep], [ac_cv_prog_egrep],
3561 [if echo a | (grep -E '(a|b)') >/dev/null 2>&1
3562 then ac_cv_prog_egrep='grep -E'
3563 else ac_cv_prog_egrep='egrep'
3565 EGREP=$ac_cv_prog_egrep
3567 test -z "$EGREP" && AC_MSG_ERROR(No egrep program found)
3569 dnl ---------------------------------------------------------------------------
3570 dnl CF_PROG_EXT version: 15 updated: 2021/01/02 09:31:20
3572 dnl Compute $PROG_EXT, used for non-Unix ports, such as OS/2 EMX.
3573 AC_DEFUN([CF_PROG_EXT],
3575 AC_REQUIRE([CF_CHECK_CACHE])
3576 case "$cf_cv_system_name" in
3578 CFLAGS="$CFLAGS -Zmt"
3579 CF_APPEND_TEXT(CPPFLAGS,-D__ST_MT_ERRNO__)
3580 CXXFLAGS="$CXXFLAGS -Zmt"
3581 # autoconf's macro sets -Zexe and suffix both, which conflict:w
3582 LDFLAGS="$LDFLAGS -Zmt -Zcrtdll"
3592 test -n "$PROG_EXT" && AC_DEFINE_UNQUOTED(PROG_EXT,"$PROG_EXT",[Define to the program extension (normally blank)])
3594 dnl ---------------------------------------------------------------------------
3595 dnl CF_PROG_GNAT version: 12 updated: 2021/01/02 17:09:14
3597 dnl Check for gnat/gnatmake/etc, ensure that the toolset is complete.
3598 AC_DEFUN([CF_PROG_GNAT],[
3599 for cf_prog_gnat in gnat gnatmake gprconfig gprbuild
3601 CF_UPPER(cf_upper_prog_gnat,${cf_prog_gnat})
3603 unset ac_cv_path_cf_TEMP_gnat
3605 AC_PATH_PROG(cf_TEMP_gnat,$cf_prog_gnat,no)
3606 eval "cf_cv_PATH_$cf_upper_prog_gnat=[$]ac_cv_path_cf_TEMP_gnat"
3608 if test "x$cf_TEMP_gnat" != xno; then
3609 unset cf_cv_gnat_version
3611 CF_GNAT_VERSION(cf_TEMP_gnat,$cf_prog_gnat)
3613 eval "cf_cv_VERSION_$cf_upper_prog_gnat=[$]cf_TEMP_gnat"
3616 unset cf_cv_gnat_version
3617 unset ac_cv_path_cf_TEMP_gnat
3620 if test "x$cf_cv_VERSION_GNATMAKE" = "xno"; then
3622 cf_cv_prog_gnat_correct=no
3624 cf_ada_make=gnatmake
3625 if test "x$cf_cv_VERSION_GPRCONFIG" = "xno"; then
3626 # gprconfig is newer than gnatmake; we can continue...
3629 rm -rf ./conftest* ./*~conftest*
3630 if mkdir conftest.src
3634 for cf_gprconfig in Ada C
3636 AC_MSG_CHECKING(for gprconfig name for $cf_gprconfig)
3637 if test "$cf_gprconfig" = C
3639 for cf_gprconfig_param in \
3640 "$cf_gprconfig,,,,GNATGCC" \
3641 "$cf_gprconfig,,,,GCC" \
3644 cf_gprconfig_value=`echo s| gprconfig --config=$cf_gprconfig_param 2>&AC_FD_CC | ${AWK:-awk} '/^\*/{print [$]3;}' | head -n 1`
3645 test -n "$cf_gprconfig_value" && break
3648 cf_gprconfig_param=$cf_gprconfig
3649 cf_gprconfig_value=`echo s| gprconfig --config=$cf_gprconfig_param 2>&AC_FD_CC | ${AWK:-awk} '/^\*/{print [$]3;}' | head -n 1`
3651 if test -n "$cf_gprconfig_value"
3653 eval "cf_ada_config_[$]cf_gprconfig=[$]cf_gprconfig_value"
3654 AC_MSG_RESULT($cf_gprconfig_value)
3656 AC_MSG_RESULT(missing)
3662 rm -rf ./conftest* ./*~conftest*
3665 if test "x$cf_ada_config" != "x#"
3668 CF_CHECK_GNAT_VERSION
3669 AC_CHECK_PROG(M4_exists, m4, yes, no)
3670 if test "$ac_cv_prog_M4_exists" = no; then
3671 cf_cv_prog_gnat_correct=no
3672 AC_MSG_WARN(Ada95 binding required program m4 not found. Ada95 binding disabled)
3674 if test "$cf_cv_prog_gnat_correct" = yes; then
3675 AC_MSG_CHECKING(if GNAT works)
3676 CF_GNAT_TRY_RUN([procedure conftest;],
3679 procedure conftest is
3681 Text_IO.Put ("Hello World");
3683 GNAT.OS_Lib.OS_Exit (0);
3685 [cf_cv_prog_gnat_correct=yes],
3686 [cf_cv_prog_gnat_correct=no])
3687 AC_MSG_RESULT($cf_cv_prog_gnat_correct)
3690 cf_cv_prog_gnat_correct=no
3694 AC_SUBST(cf_ada_make)
3695 AC_SUBST(cf_ada_config)
3696 AC_SUBST(cf_ada_config_Ada)
3697 AC_SUBST(cf_ada_config_C)
3699 dnl ---------------------------------------------------------------------------
3700 dnl CF_PROG_INSTALL version: 10 updated: 2021/01/04 19:33:05
3702 dnl Force $INSTALL to be an absolute-path. Otherwise, edit_man.sh and the
3703 dnl misc/tabset install won't work properly. Usually this happens only when
3704 dnl using the fallback mkinstalldirs script
3705 AC_DEFUN([CF_PROG_INSTALL],
3711 CF_DIRNAME(cf_dir,$INSTALL)
3712 test -z "$cf_dir" && cf_dir=.
3713 INSTALL="`cd \"$cf_dir\" && pwd`"/"`echo "$INSTALL" | sed -e 's%^.*/%%'`"
3717 dnl ---------------------------------------------------------------------------
3718 dnl CF_PROG_LN_S version: 2 updated: 2010/08/14 18:25:37
3720 dnl Combine checks for "ln -s" and "ln -sf", updating $LN_S to include "-f"
3721 dnl option if it is supported.
3722 AC_DEFUN([CF_PROG_LN_S],[
3724 AC_MSG_CHECKING(if $LN_S -f options work)
3726 rm -f conf$$.src conf$$dst
3728 echo first >conf$$.src
3729 if $LN_S -f conf$$.src conf$$.dst 2>/dev/null; then
3734 rm -f conf$$.dst conf$$src
3735 AC_MSG_RESULT($cf_prog_ln_sf)
3737 test "$cf_prog_ln_sf" = yes && LN_S="$LN_S -f"
3739 dnl ---------------------------------------------------------------------------
3740 dnl CF_REMOVE_CFLAGS version: 3 updated: 2021/09/05 17:25:40
3741 dnl ----------------
3742 dnl Remove a given option from CFLAGS/CPPFLAGS
3743 dnl $1 = option to remove
3744 dnl $2 = variable to update
3745 dnl $3 = nonempty to allow verbose message
3746 define([CF_REMOVE_CFLAGS],
3748 cf_tmp_cflag=`echo "x$1" | sed -e 's/^.//' -e 's/=.*//'`
3751 cf_old_cflag=`echo "x[$]$2" | sed -e 's/^.//' -e 's/[[ ]][[ ]]*-/ -/g' -e "s%$cf_tmp_cflag\\(=[[^ ]][[^ ]]*\\)\?%%" -e 's/^[[ ]]*//' -e 's%[[ ]][[ ]]*-D% -D%g' -e 's%[[ ]][[ ]]*-I% -I%g'`
3752 test "[$]$2" != "$cf_old_cflag" || break
3753 ifelse([$3],,,[CF_VERBOSE(removing old option $1 from $2)])
3757 dnl ---------------------------------------------------------------------------
3758 dnl CF_REMOVE_DEFINE version: 3 updated: 2010/01/09 11:05:50
3759 dnl ----------------
3760 dnl Remove all -U and -D options that refer to the given symbol from a list
3761 dnl of C compiler options. This works around the problem that not all
3762 dnl compilers process -U and -D options from left-to-right, so a -U option
3763 dnl cannot be used to cancel the effect of a preceding -D option.
3765 dnl $1 = target (which could be the same as the source variable)
3766 dnl $2 = source (including '$')
3767 dnl $3 = symbol to remove
3768 define([CF_REMOVE_DEFINE],
3771 sed -e 's/-[[UD]]'"$3"'\(=[[^ ]]*\)\?[[ ]]/ /g' \
3772 -e 's/-[[UD]]'"$3"'\(=[[^ ]]*\)\?[$]//g'`
3774 dnl ---------------------------------------------------------------------------
3775 dnl CF_REMOVE_LIB version: 1 updated: 2007/02/17 14:11:52
3777 dnl Remove the given library from the symbol
3779 dnl $1 = target (which could be the same as the source variable)
3780 dnl $2 = source (including '$')
3781 dnl $3 = library to remove
3782 define([CF_REMOVE_LIB],
3784 # remove $3 library from $2
3785 $1=`echo "$2" | sed -e 's/-l$3[[ ]]//g' -e 's/-l$3[$]//'`
3787 dnl ---------------------------------------------------------------------------
3788 dnl CF_RESTORE_XTRA_FLAGS version: 1 updated: 2020/01/11 16:47:45
3789 dnl ---------------------
3790 dnl Restore flags saved in CF_SAVE_XTRA_FLAGS
3791 dnl $1 = name of current macro
3792 define([CF_RESTORE_XTRA_FLAGS],
3794 LIBS="$cf_save_LIBS_$1"
3795 CFLAGS="$cf_save_CFLAGS_$1"
3796 CPPFLAGS="$cf_save_CPPFLAGS_$1"
3798 dnl ---------------------------------------------------------------------------
3799 dnl CF_SAVE_XTRA_FLAGS version: 1 updated: 2020/01/11 16:46:44
3800 dnl ------------------
3801 dnl Use this macro to save CFLAGS/CPPFLAGS/LIBS before checks against X headers
3802 dnl and libraries which do not update those variables.
3804 dnl $1 = name of current macro
3805 define([CF_SAVE_XTRA_FLAGS],
3807 cf_save_LIBS_$1="$LIBS"
3808 cf_save_CFLAGS_$1="$CFLAGS"
3809 cf_save_CPPFLAGS_$1="$CPPFLAGS"
3810 LIBS="$LIBS ${X_PRE_LIBS} ${X_LIBS} ${X_EXTRA_LIBS}"
3811 for cf_X_CFLAGS in $X_CFLAGS
3813 case "x$cf_X_CFLAGS" in
3815 CPPFLAGS="$CPPFLAGS $cf_X_CFLAGS"
3818 CFLAGS="$CFLAGS $cf_X_CFLAGS"
3823 dnl ---------------------------------------------------------------------------
3824 dnl CF_SHARED_OPTS version: 107 updated: 2021/09/04 06:47:34
3827 dnl Attempt to determine the appropriate CC/LD options for creating a shared
3831 dnl a) ${LOCAL_LDFLAGS} is used to link executables that will run within
3832 dnl the build-tree, i.e., by making use of the libraries that are compiled in
3833 dnl $rel_builddir/lib We avoid compiling-in a $rel_builddir/lib path for the
3834 dnl shared library since that can lead to unexpected results at runtime.
3835 dnl b) ${LOCAL_LDFLAGS2} has the same intention but assumes that the shared
3836 dnl libraries are compiled in ../../lib
3838 dnl The variable 'cf_cv_do_symlinks' is used to control whether we configure
3839 dnl to install symbolic links to the rel/abi versions of shared libraries.
3841 dnl The variable 'cf_cv_shlib_version' controls whether we use the rel or abi
3842 dnl version when making symbolic links.
3844 dnl The variable 'cf_cv_shlib_version_infix' controls whether shared library
3845 dnl version numbers are infix (ex: libncurses.<ver>.dylib) or postfix
3846 dnl (ex: libncurses.so.<ver>).
3848 dnl Some loaders leave 'so_locations' lying around. It is nice to clean up.
3849 AC_DEFUN([CF_SHARED_OPTS],
3851 AC_REQUIRE([CF_LD_RPATH_OPT])
3857 INSTALL_LIB="-m 644"
3858 : ${rel_builddir:=.}
3866 cf_cv_do_symlinks=no
3868 test "$cf_cv_enable_rpath" = yes && cf_ld_rpath_opt="$LD_RPATH_OPT"
3870 AC_MSG_CHECKING(if release/abi version should be used for shared libs)
3871 AC_ARG_WITH(shlib-version,
3872 [ --with-shlib-version=X Specify rel or abi version for shared libs],
3873 [test -z "$withval" && withval=auto
3876 cf_cv_shlib_version=auto
3879 cf_cv_shlib_version=$withval
3882 AC_MSG_RESULT($withval)
3883 AC_MSG_ERROR([option value must be one of: rel, abi, or auto])
3886 ],[cf_cv_shlib_version=auto])
3887 AC_MSG_RESULT($cf_cv_shlib_version)
3892 # Some less-capable ports of gcc support only -fpic
3896 if test "$GCC" = yes
3900 case "$cf_cv_system_name" in
3901 (*linux*) # e.g., PGI compiler
3907 if test "$cf_try_fPIC" = yes
3909 AC_MSG_CHECKING(which $CC option to use)
3910 cf_save_CFLAGS="$CFLAGS"
3911 for CC_SHARED_OPTS in -fPIC -fpic ''
3913 CFLAGS="$cf_save_CFLAGS $CC_SHARED_OPTS"
3914 AC_TRY_COMPILE([#include <stdio.h>],[int x = 1],[break],[])
3916 AC_MSG_RESULT($CC_SHARED_OPTS)
3917 CFLAGS="$cf_save_CFLAGS"
3920 cf_cv_shlib_version_infix=no
3922 case "$cf_cv_system_name" in
3923 (aix4.[3-9]*|aix[[5-7]]*)
3924 if test "$GCC" = yes; then
3925 CC_SHARED_OPTS='-Wl,-brtl'
3926 MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -Wl,-brtl -Wl,-blibpath:${RPATH_LIST}:/usr/lib -o [$]@'
3928 CC_SHARED_OPTS='-brtl'
3929 # as well as '-qpic=large -G' or perhaps "-bM:SRE -bnoentry -bexpall"
3930 MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -G -Wl,-brtl -Wl,-blibpath:${RPATH_LIST}:/usr/lib -o [$]@'
3934 MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -o $[@] -Xlinker -soname=`basename $[@]` -nostart -e 0'
3938 MK_SHARED_LIB=$SHELL' '$rel_builddir'/mk_shared_lib.sh [$]@ [$]{CC} [$]{CFLAGS}'
3939 RM_SHARED_OPTS="$RM_SHARED_OPTS $rel_builddir/mk_shared_lib.sh *.dll.a"
3940 cf_cv_shlib_version=cygdll
3941 cf_cv_shlib_version_infix=cygdll
3944 cat >mk_shared_lib.sh <<-CF_EOF
3947 IMPORT_LIB=\`echo "\[$]1" | sed -e 's/cyg/lib/' -e 's/[[0-9]]*\.dll[$]/.dll.a/'\`
3950 Linking shared library
3951 ** SHARED_LIB \[$]SHARED_LIB
3952 ** IMPORT_LIB \[$]IMPORT_LIB
3954 exec \[$]* ${LDFLAGS} -shared -Wl,--out-implib=\[$]{IMPORT_LIB} -Wl,--export-all-symbols -o \[$]{SHARED_LIB}
3956 chmod +x mk_shared_lib.sh
3960 MK_SHARED_LIB=$SHELL' '$rel_builddir'/mk_shared_lib.sh [$]@ [$]{CC} [$]{CFLAGS}'
3961 RM_SHARED_OPTS="$RM_SHARED_OPTS $rel_builddir/mk_shared_lib.sh *.dll.a"
3962 cf_cv_shlib_version=msysdll
3963 cf_cv_shlib_version_infix=msysdll
3966 cat >mk_shared_lib.sh <<-CF_EOF
3969 IMPORT_LIB=\`echo "\[$]1" | sed -e 's/msys-/lib/' -e 's/[[0-9]]*\.dll[$]/.dll.a/'\`
3972 Linking shared library
3973 ** SHARED_LIB \[$]SHARED_LIB
3974 ** IMPORT_LIB \[$]IMPORT_LIB
3976 exec \[$]* ${LDFLAGS} -shared -Wl,--out-implib=\[$]{IMPORT_LIB} -Wl,--export-all-symbols -o \[$]{SHARED_LIB}
3978 chmod +x mk_shared_lib.sh
3981 cf_try_cflags="no-cpp-precomp"
3982 CC_SHARED_OPTS="-dynamic"
3983 MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -dynamiclib -install_name ${libdir}/`basename $[@]` -compatibility_version ${ABI_VERSION} -current_version ${ABI_VERSION} -o $[@]'
3984 test "$cf_cv_shlib_version" = auto && cf_cv_shlib_version=abi
3985 cf_cv_shlib_version_infix=yes
3986 AC_CACHE_CHECK([if ld -search_paths_first works], cf_cv_ldflags_search_paths_first, [
3987 cf_save_LDFLAGS=$LDFLAGS
3988 LDFLAGS="$LDFLAGS -Wl,-search_paths_first"
3989 AC_TRY_LINK(, [int i;], cf_cv_ldflags_search_paths_first=yes, cf_cv_ldflags_search_paths_first=no)
3990 LDFLAGS=$cf_save_LDFLAGS])
3991 if test "$cf_cv_ldflags_search_paths_first" = yes; then
3992 LDFLAGS="$LDFLAGS -Wl,-search_paths_first"
3997 MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -Wl,-soname,'$cf_cv_shared_soname',-stats,-lc -o $[@]'
4000 # HP-UX 8.07 ld lacks "+b" option used for libdir search-list
4001 if test "$GCC" != yes; then
4004 MK_SHARED_LIB='${LD} ${LDFLAGS} -b -o $[@]'
4005 INSTALL_LIB="-m 555"
4008 # (tested with gcc 2.7.2 -- I don't have c89)
4009 if test "$GCC" = yes; then
4010 LD_SHARED_OPTS='-Xlinker +b -Xlinker ${libdir}'
4013 LD_SHARED_OPTS='-Wl,+b,${libdir}'
4015 MK_SHARED_LIB='${LD} ${LDFLAGS} +b ${libdir} -b -o $[@]'
4016 # HP-UX shared libraries must be executable, and should be
4017 # readonly to exploit a quirk in the memory manager.
4018 INSTALL_LIB="-m 555"
4021 test "$cf_cv_shlib_version" = auto && cf_cv_shlib_version=rel
4022 if test "$cf_cv_shlib_version" = rel; then
4023 cf_shared_soname='`basename $[@] .${REL_VERSION}`.${ABI_VERSION}'
4025 cf_shared_soname='`basename $[@]`'
4028 MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -Wl,-rpath,${RPATH_LIST} -Wl,-h,'$cf_shared_soname' -o $[@]'
4031 if test "$cf_cv_enable_rpath" = yes ; then
4032 EXTRA_LDFLAGS="${cf_ld_rpath_opt}\${RPATH_LIST} $EXTRA_LDFLAGS"
4034 # tested with IRIX 5.2 and 'cc'.
4035 if test "$GCC" != yes; then
4036 CC_SHARED_OPTS='-KPIC'
4037 MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -rdata_shared -soname `basename $[@]` -o $[@]'
4039 MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -Wl,-soname,`basename $[@]` -o $[@]'
4041 cf_cv_rm_so_locs=yes
4043 (linux*|gnu*|k*bsd*-gnu)
4044 if test "$DFT_LWR_MODEL" = "shared" && test -n "$LD_RPATH_OPT" ; then
4045 LOCAL_LDFLAGS="${LD_RPATH_OPT}\$(LOCAL_LIBDIR)"
4046 LOCAL_LDFLAGS2="$LOCAL_LDFLAGS"
4048 if test "$cf_cv_enable_rpath" = yes ; then
4049 EXTRA_LDFLAGS="${cf_ld_rpath_opt}\${RPATH_LIST} $EXTRA_LDFLAGS"
4052 MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -Wl,-soname,'$cf_cv_shared_soname',-stats,-lc -o $[@]'
4055 cf_cv_shlib_version=msvcdll
4056 cf_cv_shlib_version_infix=msvcdll
4059 if test "$DFT_LWR_MODEL" = "shared" ; then
4060 LOCAL_LDFLAGS="-link -dll"
4061 LOCAL_LDFLAGS2="$LOCAL_LDFLAGS"
4062 EXTRA_LDFLAGS="-link -dll $EXTRA_LDFLAGS"
4065 MK_SHARED_LIB=$SHELL' '$rel_builddir'/mk_shared_lib.sh [$]@ ${LD} [$]{CFLAGS}'
4066 RM_SHARED_OPTS="$RM_SHARED_OPTS $rel_builddir/mk_shared_lib.sh *.dll.lib"
4067 cat >mk_shared_lib.sh <<-CF_EOF
4070 IMPORT_LIB=\`echo "\[$]1" | sed -e 's/[[0-9]]*\.dll[$]/.dll.lib/'\`
4075 Linking shared library
4076 ** SHARED LIB \$SHARED_LIB
4077 ** IMPORT_LIB \$IMPORT_LIB
4079 args=\$(echo \[$]* | sed -E "s#-l(\w*)#\1.dll.lib#g" | sed -E "s#-L(\w*)#-LIBPATH:\1#g")
4080 exec \$my_ld -DLL -IMPLIB:"\${IMPORT_LIB}" -OUT:"\${SHARED_LIB}" ${LDFLAGS} \$args
4081 mv "\${IMPORT_LIB}" "\${IMPORT_LIB}"
4083 chmod +x mk_shared_lib.sh
4084 cat >mk_prog.sh <<-CF_EOF
4087 # Ignore first argument (compiler) and use LD (link.exe) unconditionally
4090 ldopts=("/subsystem:console")
4093 while test \[$]# -gt 0; do
4096 # ignore -link argument
4098 -M[[TD]] | -M[[TD]]d)
4099 # ignore runtime-library option
4114 libs+=("\`echo \"\[$]1\" | sed \"s/^-l//\"\`")
4117 ldopts+=("\`echo \"\[$]1\" | sed \"s/^-L/-LIBPATH:/\"\`")
4123 for linkarg in \`echo '\[$]1' | sed -e 's/-Wl,//' -e 's/,/ /'\`; do
4124 ldopts+=("\[$]{linkarg}")
4132 ldopts+=("-out:\[$]1")
4141 if [[ "\$isdll" -ne 0 ]]; then
4142 for lib in \[$]{libs[[*]]}; do
4143 ldopts+=("\[$]lib.dll.lib")
4146 for lib in \[$]{libs[[*]]}; do
4147 ldopts+=("\[$]lib.lib")
4152 ** ld options: "\[$]{ldopts[[@]]}"
4154 exec \[$]LD \[$]{ldopts[[@]]}
4157 LINK_PROGS="$SHELL ${rel_builddir}/mk_prog.sh"
4158 LINK_TESTS="$SHELL ${rel_builddir}/mk_prog.sh"
4161 cf_cv_shlib_version=mingw
4162 cf_cv_shlib_version_infix=mingw
4165 if test "$DFT_LWR_MODEL" = "shared" ; then
4166 LOCAL_LDFLAGS="-Wl,--enable-auto-import"
4167 LOCAL_LDFLAGS2="$LOCAL_LDFLAGS"
4168 EXTRA_LDFLAGS="-Wl,--enable-auto-import $EXTRA_LDFLAGS"
4171 MK_SHARED_LIB=$SHELL' '$rel_builddir'/mk_shared_lib.sh [$]@ [$]{CC} [$]{CFLAGS}'
4172 RM_SHARED_OPTS="$RM_SHARED_OPTS $rel_builddir/mk_shared_lib.sh *.dll.a"
4173 cat >mk_shared_lib.sh <<-CF_EOF
4176 IMPORT_LIB=\`echo "\[$]1" | sed -e 's/[[0-9]]*\.dll[$]/.dll.a/'\`
4179 Linking shared library
4180 ** SHARED_LIB \[$]SHARED_LIB
4181 ** IMPORT_LIB \[$]IMPORT_LIB
4183 exec \[$]* ${LDFLAGS} -shared -Wl,--enable-auto-import,--out-implib=\[$]{IMPORT_LIB} -Wl,--export-all-symbols -o \[$]{SHARED_LIB}
4185 chmod +x mk_shared_lib.sh
4187 (openbsd[[2-9]].*|mirbsd*)
4188 if test "$DFT_LWR_MODEL" = "shared" && test -n "$LD_RPATH_OPT" ; then
4189 LOCAL_LDFLAGS="${LD_RPATH_OPT}\$(LOCAL_LIBDIR)"
4190 LOCAL_LDFLAGS2="$LOCAL_LDFLAGS"
4192 if test "$cf_cv_enable_rpath" = yes ; then
4193 EXTRA_LDFLAGS="${cf_ld_rpath_opt}\${RPATH_LIST} $EXTRA_LDFLAGS"
4195 CC_SHARED_OPTS="$CC_SHARED_OPTS -DPIC"
4197 MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -Wl,-Bshareable,-soname,'$cf_cv_shared_soname',-stats,-lc -o $[@]'
4201 MK_SHARED_LIB='${LD} -Wshared -Weld=-export_all -o $[@]'
4205 MK_SHARED_LIB='${LD} -Wshared -Wxld=-export_all -o $[@]'
4207 (nto-qnx*|openbsd*|freebsd[[12]].*)
4208 CC_SHARED_OPTS="$CC_SHARED_OPTS -DPIC"
4209 MK_SHARED_LIB='${LD} ${LDFLAGS} -Bshareable -o $[@]'
4210 test "$cf_cv_shlib_version" = auto && cf_cv_shlib_version=rel
4212 (dragonfly*|freebsd*)
4213 CC_SHARED_OPTS="$CC_SHARED_OPTS -DPIC"
4214 if test "$DFT_LWR_MODEL" = "shared" && test "$cf_cv_enable_rpath" = yes ; then
4215 LOCAL_LDFLAGS="${cf_ld_rpath_opt}\$(LOCAL_LIBDIR)"
4216 LOCAL_LDFLAGS2="${cf_ld_rpath_opt}\${RPATH_LIST} $LOCAL_LDFLAGS"
4217 EXTRA_LDFLAGS="${cf_ld_rpath_opt}\${RPATH_LIST} $EXTRA_LDFLAGS"
4220 MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -Wl,-soname,'$cf_cv_shared_soname',-stats,-lc -o $[@]'
4223 CC_SHARED_OPTS="$CC_SHARED_OPTS -DPIC"
4224 if test "$DFT_LWR_MODEL" = "shared" && test "$cf_cv_enable_rpath" = yes ; then
4225 LOCAL_LDFLAGS="${cf_ld_rpath_opt}\$(LOCAL_LIBDIR)"
4226 LOCAL_LDFLAGS2="$LOCAL_LDFLAGS"
4227 EXTRA_LDFLAGS="${cf_ld_rpath_opt}\${RPATH_LIST} $EXTRA_LDFLAGS"
4228 if test "$cf_cv_shlib_version" = auto; then
4229 if test -f /usr/libexec/ld.elf_so; then
4230 cf_cv_shlib_version=abi
4232 cf_cv_shlib_version=rel
4236 MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -Wl,-soname,'$cf_cv_shared_soname' -o $[@]'
4238 MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -o $[@]'
4242 # tested with OSF/1 V3.2 and 'cc'
4243 # tested with OSF/1 V3.2 and gcc 2.6.3 (but the c++ demo didn't
4244 # link with shared libs).
4245 MK_SHARED_LIB='${LD} ${LDFLAGS} -set_version ${REL_VERSION}:${ABI_VERSION} -expect_unresolved "*" -shared -soname `basename $[@]`'
4248 MK_SHARED_LIB="${MK_SHARED_LIB} -msym"
4251 MK_SHARED_LIB="${MK_SHARED_LIB}"' -o $[@]'
4252 if test "$DFT_LWR_MODEL" = "shared" && test -n "$LD_RPATH_OPT" ; then
4253 LOCAL_LDFLAGS="${LD_RPATH_OPT}\$(LOCAL_LIBDIR)"
4254 LOCAL_LDFLAGS2="$LOCAL_LDFLAGS"
4256 cf_cv_rm_so_locs=yes
4258 (sco3.2v5*) # also uw2* and UW7: hops 13-Apr-98
4259 # tested with osr5.0.5
4260 if test "$GCC" != yes; then
4261 CC_SHARED_OPTS='-belf -KPIC'
4263 MK_SHARED_LIB='${LD} ${LDFLAGS} -dy -G -h `basename $[@] .${REL_VERSION}`.${ABI_VERSION} -o [$]@'
4264 if test "$cf_cv_enable_rpath" = yes ; then
4265 # only way is to set LD_RUN_PATH but no switch for it
4268 test "$cf_cv_shlib_version" = auto && cf_cv_shlib_version=rel
4269 LINK_PROGS='LD_RUN_PATH=${libdir}'
4270 LINK_TESTS='Pwd=`pwd`;LD_RUN_PATH=`dirname $${Pwd}`/lib'
4273 # tested with SunOS 4.1.1 and gcc 2.7.0
4274 if test "$GCC" != yes; then
4275 CC_SHARED_OPTS='-KPIC'
4277 MK_SHARED_LIB='${LD} ${LDFLAGS} -assert pure-text -o $[@]'
4278 test "$cf_cv_shlib_version" = auto && cf_cv_shlib_version=rel
4281 # tested with SunOS 5.5.1 (solaris 2.5.1) and gcc 2.7.2
4282 # tested with SunOS 5.10 (solaris 10) and gcc 3.4.3
4283 if test "$DFT_LWR_MODEL" = "shared" ; then
4284 LOCAL_LDFLAGS="-R \$(LOCAL_LIBDIR):\${libdir}"
4285 LOCAL_LDFLAGS2="$LOCAL_LDFLAGS"
4287 if test "$cf_cv_enable_rpath" = yes ; then
4288 EXTRA_LDFLAGS="-R \${libdir} $EXTRA_LDFLAGS"
4291 if test "$GCC" != yes; then
4292 cf_save_CFLAGS="$CFLAGS"
4293 for cf_shared_opts in -xcode=pic32 -xcode=pic13 -KPIC -Kpic -O
4295 CFLAGS="$cf_shared_opts $cf_save_CFLAGS"
4296 AC_TRY_COMPILE([#include <stdio.h>],[printf("Hello\\n");],[break])
4298 CFLAGS="$cf_save_CFLAGS"
4299 CC_SHARED_OPTS=$cf_shared_opts
4300 MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -dy -G -h '$cf_cv_shared_soname' -o $[@]'
4302 MK_SHARED_LIB='${CC} ${LDFLAGS} ${CFLAGS} -shared -dy -G -h '$cf_cv_shared_soname' -o $[@]'
4305 (sysv5uw7*|unix_sv*)
4306 # tested with UnixWare 7.1.0 (gcc 2.95.2 and cc)
4307 if test "$GCC" != yes; then
4308 CC_SHARED_OPTS='-KPIC'
4310 MK_SHARED_LIB='${LD} ${LDFLAGS} -d y -G -o [$]@'
4313 CC_SHARED_OPTS='unknown'
4314 MK_SHARED_LIB='echo unknown'
4318 # This works if the last tokens in $MK_SHARED_LIB are the -o target.
4319 case "$cf_cv_shlib_version" in
4321 case "$MK_SHARED_LIB" in
4323 test "$cf_cv_do_symlinks" = no && cf_cv_do_symlinks=yes
4326 AC_MSG_WARN(ignored --with-shlib-version)
4332 if test -n "$cf_try_cflags"
4334 cat > conftest.$ac_ext <<EOF
4335 #line __oline__ "${as_me:-configure}"
4337 int main(int argc, char *argv[[]])
4340 return (argv[[argc-1]] == 0) ;
4343 cf_save_CFLAGS="$CFLAGS"
4344 for cf_opt in $cf_try_cflags
4346 CFLAGS="$cf_save_CFLAGS -$cf_opt"
4347 AC_MSG_CHECKING(if CFLAGS option -$cf_opt works)
4348 if AC_TRY_EVAL(ac_compile); then
4350 cf_save_CFLAGS="$CFLAGS"
4355 CFLAGS="$cf_save_CFLAGS"
4359 # RPATH_LIST is a colon-separated list of directories
4360 test -n "$cf_ld_rpath_opt" && MK_SHARED_LIB="$MK_SHARED_LIB $cf_ld_rpath_opt\${RPATH_LIST}"
4361 test -z "$RPATH_LIST" && RPATH_LIST="\${libdir}"
4363 test "$cf_cv_rm_so_locs" = yes && RM_SHARED_OPTS="$RM_SHARED_OPTS so_locations"
4365 CF_VERBOSE(CC_SHARED_OPTS: $CC_SHARED_OPTS)
4366 CF_VERBOSE(MK_SHARED_LIB: $MK_SHARED_LIB)
4368 AC_SUBST(CC_SHARED_OPTS)
4369 AC_SUBST(LD_RPATH_OPT)
4370 AC_SUBST(LD_SHARED_OPTS)
4371 AC_SUBST(MK_SHARED_LIB)
4372 AC_SUBST(RM_SHARED_OPTS)
4374 AC_SUBST(LINK_PROGS)
4375 AC_SUBST(LINK_TESTS)
4377 AC_SUBST(EXTRA_LDFLAGS)
4378 AC_SUBST(LOCAL_LDFLAGS)
4379 AC_SUBST(LOCAL_LDFLAGS2)
4381 AC_SUBST(INSTALL_LIB)
4382 AC_SUBST(RPATH_LIST)
4384 dnl ---------------------------------------------------------------------------
4385 dnl CF_SHARED_SONAME version: 3 updated: 2008/09/08 18:34:43
4386 dnl ----------------
4387 dnl utility macro for CF_SHARED_OPTS, constructs "$cf_cv_shared_soname" for
4388 dnl substitution into MK_SHARED_LIB string for the "-soname" (or similar)
4391 dnl $1 is the default that should be used for "$cf_cv_shlib_version".
4392 dnl If missing, use "rel".
4393 define([CF_SHARED_SONAME],
4395 test "$cf_cv_shlib_version" = auto && cf_cv_shlib_version=ifelse($1,,rel,$1)
4396 if test "$cf_cv_shlib_version" = rel; then
4397 cf_cv_shared_soname='`basename $[@] .${REL_VERSION}`.${ABI_VERSION}'
4399 cf_cv_shared_soname='`basename $[@]`'
4402 dnl ---------------------------------------------------------------------------
4403 dnl CF_STRIP_G_OPT version: 4 updated: 2021/01/02 09:31:20
4405 dnl Remove "-g" option from the compiler options
4406 AC_DEFUN([CF_STRIP_G_OPT],
4407 [$1=`echo "${$1}" | CF__SED_TRIMBLANKS(-e 's%-g %%' -e 's%-g$%%')`])dnl
4408 dnl ---------------------------------------------------------------------------
4409 dnl CF_SUBDIR_PATH version: 7 updated: 2014/12/04 04:33:06
4411 dnl Construct a search-list for a nonstandard header/lib-file
4412 dnl $1 = the variable to return as result
4413 dnl $2 = the package name
4414 dnl $3 = the subdirectory, e.g., bin, include or lib
4415 AC_DEFUN([CF_SUBDIR_PATH],
4419 CF_ADD_SUBDIR_PATH($1,$2,$3,$prefix,NONE)
4421 for cf_subdir_prefix in \
4429 CF_ADD_SUBDIR_PATH($1,$2,$3,$cf_subdir_prefix,$prefix)
4432 dnl ---------------------------------------------------------------------------
4433 dnl CF_TERM_HEADER version: 6 updated: 2021/01/02 09:31:20
4435 dnl Look for term.h, which is part of X/Open curses. It defines the interface
4436 dnl to terminfo database. Usually it is in the same include-path as curses.h,
4437 dnl but some packagers change this, breaking various applications.
4438 AC_DEFUN([CF_TERM_HEADER],[
4439 AC_CACHE_CHECK(for terminfo header, cf_cv_term_header,[
4440 case "${cf_cv_ncurses_header}" in
4441 (*/ncurses.h|*/ncursesw.h)
4442 cf_term_header=`echo "$cf_cv_ncurses_header" | sed -e 's%ncurses[[^.]]*\.h$%term.h%'`
4445 cf_term_header=term.h
4449 for cf_test in $cf_term_header "ncurses/term.h" "ncursesw/term.h"
4451 AC_TRY_COMPILE([#include <stdio.h>
4452 #include <${cf_cv_ncurses_header:-curses.h}>
4454 ],[int x = auto_left_margin; (void)x],[
4455 cf_cv_term_header="$cf_test"],[
4456 cf_cv_term_header=unknown
4458 test "$cf_cv_term_header" != unknown && break
4462 # Set definitions to allow ifdef'ing to accommodate subdirectories
4464 case "$cf_cv_term_header" in
4466 AC_DEFINE(HAVE_TERM_H,1,[Define to 1 if we have term.h])
4470 case "$cf_cv_term_header" in
4472 AC_DEFINE(HAVE_NCURSES_TERM_H,1,[Define to 1 if we have ncurses/term.h])
4475 AC_DEFINE(HAVE_NCURSESW_TERM_H,1,[Define to 1 if we have ncursesw/term.h])
4479 dnl ---------------------------------------------------------------------------
4480 dnl CF_TOP_BUILDDIR version: 2 updated: 2013/07/27 17:38:32
4482 dnl Define a top_builddir symbol, for applications that need an absolute path.
4483 AC_DEFUN([CF_TOP_BUILDDIR],
4485 top_builddir=ifelse($1,,`pwd`,$1)
4486 AC_SUBST(top_builddir)
4488 dnl ---------------------------------------------------------------------------
4489 dnl CF_TRY_XOPEN_SOURCE version: 3 updated: 2021/08/28 15:20:37
4490 dnl -------------------
4491 dnl If _XOPEN_SOURCE is not defined in the compile environment, check if we
4492 dnl can define it successfully.
4493 AC_DEFUN([CF_TRY_XOPEN_SOURCE],[
4494 AC_CACHE_CHECK(if we should define _XOPEN_SOURCE,cf_cv_xopen_source,[
4498 #include <sys/types.h>
4500 #ifndef _XOPEN_SOURCE
4503 [cf_cv_xopen_source=no],
4504 [cf_save="$CPPFLAGS"
4505 CF_APPEND_TEXT(CPPFLAGS,-D_XOPEN_SOURCE=$cf_XOPEN_SOURCE)
4509 #include <sys/types.h>
4511 #ifdef _XOPEN_SOURCE
4514 [cf_cv_xopen_source=no],
4515 [cf_cv_xopen_source=$cf_XOPEN_SOURCE])
4520 if test "$cf_cv_xopen_source" != no ; then
4521 CF_REMOVE_DEFINE(CFLAGS,$CFLAGS,_XOPEN_SOURCE)
4522 CF_REMOVE_DEFINE(CPPFLAGS,$CPPFLAGS,_XOPEN_SOURCE)
4523 cf_temp_xopen_source="-D_XOPEN_SOURCE=$cf_cv_xopen_source"
4524 CF_APPEND_CFLAGS($cf_temp_xopen_source)
4527 dnl ---------------------------------------------------------------------------
4528 dnl CF_UPPER version: 5 updated: 2001/01/29 23:40:59
4530 dnl Make an uppercase version of a variable
4531 dnl $1=uppercase($2)
4532 AC_DEFUN([CF_UPPER],
4534 $1=`echo "$2" | sed y%abcdefghijklmnopqrstuvwxyz./-%ABCDEFGHIJKLMNOPQRSTUVWXYZ___%`
4536 dnl ---------------------------------------------------------------------------
4537 dnl CF_UTF8_LIB version: 9 updated: 2021/05/19 19:35:25
4539 dnl Check for multibyte support, and if not found, utf8 compatibility library
4540 AC_DEFUN([CF_UTF8_LIB],
4542 AC_HAVE_HEADERS(wchar.h)
4543 AC_CACHE_CHECK(for multibyte character support,cf_cv_utf8_lib,[
4544 cf_save_LIBS="$LIBS"
4552 [cf_cv_utf8_lib=yes],
4554 #include <libutf8.h>],[putwc(0,0);],utf8,
4555 [cf_cv_utf8_lib=add-on],
4556 [cf_cv_utf8_lib=no])
4559 # HAVE_LIBUTF8_H is used by ncurses if curses.h is shared between
4561 if test "$cf_cv_utf8_lib" = "add-on" ; then
4562 AC_DEFINE(HAVE_LIBUTF8_H,1,[Define to 1 if we should include libutf8.h])
4563 CF_ADD_INCDIR($cf_cv_header_path_utf8)
4564 CF_ADD_LIBDIR($cf_cv_library_path_utf8)
4565 CF_ADD_LIBS($cf_cv_library_file_utf8)
4568 dnl ---------------------------------------------------------------------------
4569 dnl CF_VERBOSE version: 3 updated: 2007/07/29 09:55:12
4571 dnl Use AC_VERBOSE w/o the warnings
4572 AC_DEFUN([CF_VERBOSE],
4573 [test -n "$verbose" && echo " $1" 1>&AC_FD_MSG
4576 dnl ---------------------------------------------------------------------------
4577 dnl CF_WEAK_SYMBOLS version: 1 updated: 2008/08/16 19:18:06
4579 dnl Check for compiler-support for weak symbols.
4580 dnl This works with "recent" gcc.
4581 AC_DEFUN([CF_WEAK_SYMBOLS],[
4582 AC_CACHE_CHECK(if $CC supports weak symbols,cf_cv_weak_symbols,[
4585 #include <stdio.h>],
4587 #if defined(__GNUC__)
4588 # if defined __USE_ISOC99
4589 # define _cat_pragma(exp) _Pragma(#exp)
4590 # define _weak_pragma(exp) _cat_pragma(weak name)
4592 # define _weak_pragma(exp)
4594 # define _declare(name) __extension__ extern __typeof__(name) name
4595 # define weak_symbol(name) _weak_pragma(name) _declare(name) __attribute__((weak))
4599 ],[cf_cv_weak_symbols=yes],[cf_cv_weak_symbols=no])
4602 dnl ---------------------------------------------------------------------------
4603 dnl CF_WITH_ADA_COMPILER version: 2 updated: 2010/06/26 17:35:58
4604 dnl --------------------
4605 dnl Command-line option to specify the Ada95 compiler.
4606 AC_DEFUN([CF_WITH_ADA_COMPILER],[
4607 AC_MSG_CHECKING(for ada-compiler)
4608 AC_ARG_WITH(ada-compiler,
4609 [ --with-ada-compiler=CMD specify Ada95 compiler command (default gnatmake)],
4610 [cf_ada_compiler=$withval],
4611 [cf_ada_compiler=gnatmake])
4612 AC_SUBST(cf_ada_compiler)
4613 AC_MSG_RESULT($cf_ada_compiler)
4615 dnl ---------------------------------------------------------------------------
4616 dnl CF_WITH_ADA_INCLUDE version: 2 updated: 2010/06/26 17:35:58
4617 dnl -------------------
4618 dnl Command-line option to specify where Ada includes will install.
4619 AC_DEFUN([CF_WITH_ADA_INCLUDE],[
4620 AC_MSG_CHECKING(for ada-include)
4621 CF_WITH_PATH(ada-include,
4622 [ --with-ada-include=DIR Ada includes are in DIR],
4624 PREFIX/share/ada/adainclude,
4625 [$]prefix/share/ada/adainclude)
4626 AC_SUBST(ADA_INCLUDE)
4627 AC_MSG_RESULT($ADA_INCLUDE)
4629 dnl ---------------------------------------------------------------------------
4630 dnl CF_WITH_ADA_LIBNAME version: 1 updated: 2019/09/07 18:59:41
4631 dnl -------------------
4632 dnl CF_WITH_ADA_LIBNAME
4633 dnl -------------------
4634 dnl Command-line option to specify how to name the resulting Ada library.
4635 dnl $1 = default value
4636 AC_DEFUN([CF_WITH_ADA_LIBNAME],[
4637 AC_MSG_CHECKING(for ada-libname)
4638 AC_ARG_WITH(ada-libname,
4639 [ --with-ada-libname=XXX override default Ada library-name],
4640 ADA_LIBNAME=[$]withval,
4642 case "x$ADA_LIBNAME" in
4647 AC_SUBST(ADA_LIBNAME)
4648 AC_MSG_RESULT($ADA_LIBNAME)
4650 dnl ---------------------------------------------------------------------------
4651 dnl CF_WITH_ADA_OBJECTS version: 2 updated: 2010/06/26 17:35:58
4652 dnl -------------------
4653 dnl Command-line option to specify where Ada objects will install.
4654 AC_DEFUN([CF_WITH_ADA_OBJECTS],[
4655 AC_MSG_CHECKING(for ada-objects)
4656 CF_WITH_PATH(ada-objects,
4657 [ --with-ada-objects=DIR Ada objects are in DIR],
4659 PREFIX/lib/ada/adalib,
4660 [$]prefix/lib/ada/adalib)
4661 AC_SUBST(ADA_OBJECTS)
4662 AC_MSG_RESULT($ADA_OBJECTS)
4664 dnl ---------------------------------------------------------------------------
4665 dnl CF_WITH_ADA_SHAREDLIB version: 5 updated: 2018/07/21 19:10:35
4666 dnl ---------------------
4667 dnl Command-line option to specify if an Ada95 shared-library should be built,
4668 dnl and optionally what its soname should be.
4669 AC_DEFUN([CF_WITH_ADA_SHAREDLIB],[
4670 AC_REQUIRE([CF_GNAT_PROJECTS])
4671 AC_MSG_CHECKING(if an Ada95 shared-library should be built)
4672 AC_ARG_WITH(ada-sharedlib,
4673 [ --with-ada-sharedlib=soname build shared-library (requires GNAT projects)],
4674 [with_ada_sharedlib=$withval],
4675 [with_ada_sharedlib=no])
4676 AC_MSG_RESULT($with_ada_sharedlib)
4678 if test "x$with_ada_sharedlib" != xno
4680 if test "x$cf_gnat_projects" != xyes
4682 AC_MSG_WARN(disabling shared-library since GNAT projects are not supported)
4683 with_ada_sharedlib=no
4687 ADA_SHAREDLIB='lib$(LIB_NAME).so.1'
4688 MAKE_ADA_SHAREDLIB="#"
4690 if test "x$with_ada_sharedlib" != xno
4693 if test "x$with_ada_sharedlib" != xyes
4695 ADA_SHAREDLIB="$with_ada_sharedlib"
4699 AC_SUBST(ADA_SHAREDLIB)
4700 AC_SUBST(MAKE_ADA_SHAREDLIB)
4702 dnl ---------------------------------------------------------------------------
4703 dnl CF_WITH_CURSES_DIR version: 4 updated: 2021/01/02 19:22:58
4704 dnl ------------------
4705 dnl Wrapper for AC_ARG_WITH to specify directory under which to look for curses
4707 AC_DEFUN([CF_WITH_CURSES_DIR],[
4709 AC_MSG_CHECKING(for specific curses-directory)
4710 AC_ARG_WITH(curses-dir,
4711 [ --with-curses-dir=DIR directory in which (n)curses is installed],
4712 [cf_cv_curses_dir=$withval],
4713 [cf_cv_curses_dir=no])
4714 AC_MSG_RESULT($cf_cv_curses_dir)
4716 if test -n "$cf_cv_curses_dir" && test "$cf_cv_curses_dir" != "no"
4718 CF_PATH_SYNTAX(withval)
4719 if test -d "$cf_cv_curses_dir"
4721 CF_ADD_INCDIR($cf_cv_curses_dir/include)
4722 CF_ADD_LIBDIR($cf_cv_curses_dir/lib)
4726 dnl ---------------------------------------------------------------------------
4727 dnl CF_WITH_LIB_PREFIX version: 2 updated: 2021/01/01 16:53:59
4728 dnl ------------------
4729 dnl Allow the library-prefix to be overridden. OS/2 EMX originally had no
4730 dnl "lib" prefix, e.g., because it used the dll naming convention.
4732 dnl $1 = variable to set
4733 AC_DEFUN([CF_WITH_LIB_PREFIX],
4735 AC_MSG_CHECKING(if you want to have a library-prefix)
4736 AC_ARG_WITH(lib-prefix,
4737 [ --with-lib-prefix override library-prefix],
4738 [with_lib_prefix=$withval],
4739 [with_lib_prefix=auto])
4740 AC_MSG_RESULT($with_lib_prefix)
4742 if test "$with_lib_prefix" = auto
4745 elif test "$with_lib_prefix" = no
4749 LIB_PREFIX=$with_lib_prefix
4752 dnl ---------------------------------------------------------------------------
4753 dnl CF_WITH_PATH version: 12 updated: 2021/09/04 06:35:04
4755 dnl Wrapper for AC_ARG_WITH to ensure that user supplies a pathname, not just
4756 dnl defaulting to yes/no.
4758 dnl $1 = option name
4760 dnl $3 = environment variable to set
4761 dnl $4 = default value, shown in the help-message, must be a constant
4762 dnl $5 = default value, if it is an expression & cannot be in the help-message
4764 AC_DEFUN([CF_WITH_PATH],
4765 [AC_ARG_WITH($1,[$2 ](default: ifelse([$4],,empty,[$4])),,
4766 ifelse([$4],,[withval="${$3}"],[withval="${$3:-ifelse([$5],,[$4],[$5])}"]))dnl
4767 if ifelse([$5],,true,[test -n "$5"]) ; then
4768 CF_PATH_SYNTAX(withval)
4773 dnl ---------------------------------------------------------------------------
4774 dnl CF_WITH_PKG_CONFIG_LIBDIR version: 13 updated: 2021/10/17 11:12:47
4775 dnl -------------------------
4776 dnl Allow the choice of the pkg-config library directory to be overridden.
4778 dnl pkg-config uses a search-list built from these colon-separated lists of
4780 dnl a) $PKG_CONFIG_PATH (tested first, added if set)
4781 dnl b) $PKG_CONFIG_LIBDIR (tested second, added if set)
4782 dnl c) builtin-list (added if $PKG_CONFIG_LIBDIR is not set)
4784 dnl pkgconf (used with some systems such as FreeBSD in place of pkg-config)
4785 dnl optionally ignores $PKG_CONFIG_LIBDIR.
4786 AC_DEFUN([CF_WITH_PKG_CONFIG_LIBDIR],[
4788 case "$PKG_CONFIG" in
4790 AC_MSG_CHECKING(for pkg-config library directory)
4793 AC_MSG_CHECKING(for $PKG_CONFIG library directory)
4797 cf_search_path=`echo "$PKG_CONFIG_LIBDIR" | sed -e 's/:/ /g' -e 's,^[[ ]]*,,'`
4798 AC_ARG_WITH(pkg-config-libdir,
4799 [ --with-pkg-config-libdir=XXX use given directory for installing pc-files],
4800 [cf_search_path=$withval],
4801 [test "x$PKG_CONFIG" != xnone && cf_search_path=yes])
4803 case x$cf_search_path in
4809 # Look for the library directory using the same prefix as the executable
4810 AC_MSG_CHECKING(for search-list)
4811 if test "x$PKG_CONFIG" = xnone
4815 cf_path=`echo "$PKG_CONFIG" | sed -e 's,/[[^/]]*/[[^/]]*$,,'`
4817 "$PKG_CONFIG" --debug --exists no-such-package 2>&1 | awk "\
4818 /^Scanning directory #[1-9][0-9]* '.*'$/{ \
4819 sub(\"^[[^']]*'\",\"\"); \
4820 sub(\"'.*\",\"\"); \
4821 printf \" %s\", \\[$]0; } \
4823 sub(\"^.* trying path: \",\"\");
4824 sub(\" for no-such-package.*$\",\"\");
4825 printf \" %s\", \\[$]0;
4831 if test -z "$cf_search_path"
4833 # If you don't like using the default architecture, you have to specify
4834 # the intended library directory and corresponding compiler/linker
4837 # This case allows for Debian's 2014-flavor of multiarch, along with
4838 # the most common variations before that point. Some other variants
4839 # spell the directory differently, e.g., "pkg-config", and put it in
4842 # pkg-config has always been poorly standardized, which is ironic...
4843 case x`(arch) 2>/dev/null` in
4846 $cf_path/lib/*64-linux-gnu \
4854 $cf_path/lib/*-linux-gnu \
4861 for cf_config in $cf_test_path
4863 test -d "$cf_config/pkgconfig" && cf_search_path="$cf_search_path $cf_config/pkgconfig"
4867 AC_MSG_RESULT($cf_search_path)
4874 AC_MSG_CHECKING(for first directory)
4875 cf_pkg_config_path=none
4876 for cf_config in $cf_search_path
4878 if test -d "$cf_config"
4880 cf_pkg_config_path=$cf_config
4884 AC_MSG_RESULT($cf_pkg_config_path)
4886 if test "x$cf_pkg_config_path" != xnone ; then
4887 # limit this to the first directory found
4888 PKG_CONFIG_LIBDIR="$cf_pkg_config_path"
4891 AC_SUBST(PKG_CONFIG_LIBDIR)
4893 dnl ---------------------------------------------------------------------------
4894 dnl CF_WITH_PTHREAD version: 7 updated: 2015/04/18 08:56:57
4896 dnl Check for POSIX thread library.
4897 AC_DEFUN([CF_WITH_PTHREAD],
4899 AC_MSG_CHECKING(if you want to link with the pthread library)
4900 AC_ARG_WITH(pthread,
4901 [ --with-pthread use POSIX thread library],
4902 [with_pthread=$withval],
4904 AC_MSG_RESULT($with_pthread)
4906 if test "$with_pthread" != no ; then
4907 AC_CHECK_HEADER(pthread.h,[
4908 AC_DEFINE(HAVE_PTHREADS_H,1,[Define to 1 if we have pthreads.h header])
4910 for cf_lib_pthread in pthread c_r
4912 AC_MSG_CHECKING(if we can link with the $cf_lib_pthread library)
4913 cf_save_LIBS="$LIBS"
4914 CF_ADD_LIB($cf_lib_pthread)
4916 #include <pthread.h>
4918 int rc = pthread_create(0,0,0,0);
4919 int r2 = pthread_mutexattr_settype(0, 0);
4920 ],[with_pthread=yes],[with_pthread=no])
4921 LIBS="$cf_save_LIBS"
4922 AC_MSG_RESULT($with_pthread)
4923 test "$with_pthread" = yes && break
4926 if test "$with_pthread" = yes ; then
4927 CF_ADD_LIB($cf_lib_pthread)
4928 AC_DEFINE(HAVE_LIBPTHREADS,1,[Define to 1 if we have pthreads library])
4930 AC_MSG_ERROR(Cannot link with pthread library)
4935 dnl ---------------------------------------------------------------------------
4936 dnl CF_WITH_SYSTYPE version: 1 updated: 2013/01/26 16:26:12
4938 dnl For testing, override the derived host system-type which is used to decide
4939 dnl things such as the linker commands used to build shared libraries. This is
4940 dnl normally chosen automatically based on the type of system which you are
4941 dnl building on. We use it for testing the configure script.
4943 dnl This is different from the --host option: it is used only for testing parts
4944 dnl of the configure script which would not be reachable with --host since that
4945 dnl relies on the build environment being real, rather than mocked up.
4946 AC_DEFUN([CF_WITH_SYSTYPE],[
4947 CF_CHECK_CACHE([AC_CANONICAL_SYSTEM])
4948 AC_ARG_WITH(system-type,
4949 [ --with-system-type=XXX test: override derived host system-type],
4950 [AC_MSG_WARN(overriding system type to $withval)
4951 cf_cv_system_name=$withval
4955 dnl ---------------------------------------------------------------------------
4956 dnl CF_XOPEN_SOURCE version: 59 updated: 2021/08/28 15:20:37
4958 dnl Try to get _XOPEN_SOURCE defined properly that we can use POSIX functions,
4959 dnl or adapt to the vendor's definitions to get equivalent functionality,
4960 dnl without losing the common non-POSIX features.
4963 dnl $1 is the nominal value for _XOPEN_SOURCE
4964 dnl $2 is the nominal value for _POSIX_C_SOURCE
4965 AC_DEFUN([CF_XOPEN_SOURCE],[
4966 AC_REQUIRE([AC_CANONICAL_HOST])
4967 AC_REQUIRE([CF_POSIX_VISIBLE])
4969 if test "$cf_cv_posix_visible" = no; then
4971 cf_XOPEN_SOURCE=ifelse([$1],,500,[$1])
4972 cf_POSIX_C_SOURCE=ifelse([$2],,199506L,[$2])
4977 cf_xopen_source="-D_ALL_SOURCE"
4983 cf_xopen_source="-D_APPLE_C_SOURCE"
4986 cf_xopen_source="-D_DARWIN_C_SOURCE"
4989 (freebsd*|dragonfly*|midnightbsd*)
4990 # 5.x headers associate
4991 # _XOPEN_SOURCE=600 with _POSIX_C_SOURCE=200112L
4992 # _XOPEN_SOURCE=500 with _POSIX_C_SOURCE=199506L
4993 cf_POSIX_C_SOURCE=200112L
4995 cf_xopen_source="-D_BSD_TYPES -D__BSD_VISIBLE -D_POSIX_C_SOURCE=$cf_POSIX_C_SOURCE -D_XOPEN_SOURCE=$cf_XOPEN_SOURCE"
4998 cf_xopen_source="-D_HPUX_SOURCE -D_XOPEN_SOURCE=500"
5001 cf_xopen_source="-D_HPUX_SOURCE"
5004 cf_xopen_source="-D_SGI_SOURCE"
5007 (linux*|uclinux*|gnu*|mint*|k*bsd*-gnu|cygwin)
5008 CF_GNU_SOURCE($cf_XOPEN_SOURCE)
5011 cf_xopen_source="-D_NETBSD_SOURCE" # POSIX.1-2001 features are ifdef'd with this...
5014 # setting _XOPEN_SOURCE or _POSIX_SOURCE breaks <sys/select.h> and other headers which use u_int / u_short types
5016 CF_POSIX_C_SOURCE($cf_POSIX_C_SOURCE)
5019 cf_xopen_source="-D_NETBSD_SOURCE" # setting _XOPEN_SOURCE breaks IPv6 for lynx on NetBSD 1.6, breaks xterm, is not needed for ncursesw
5022 # OpenBSD 6.x has broken locale support, both compile-time and runtime.
5023 # see https://www.mail-archive.com/bugs@openbsd.org/msg13200.html
5024 # Abusing the conformance level is a workaround.
5025 AC_MSG_WARN(this system does not provide usable locale support)
5026 cf_xopen_source="-D_BSD_SOURCE"
5030 # setting _XOPEN_SOURCE lower than 500 breaks g++ compile with wchar.h, needed for ncursesw
5031 cf_xopen_source="-D_BSD_SOURCE"
5035 # setting _XOPEN_SOURCE breaks xterm on OpenBSD 2.8, is not needed for ncursesw
5038 cf_xopen_source="-D_OSF_SOURCE"
5041 cf_xopen_source="-D_QNX_SOURCE"
5044 # setting _XOPEN_SOURCE breaks Lynx on SCO Unix / OpenServer
5047 cf_xopen_source="-D__EXTENSIONS__"
5048 cf_cv_xopen_source=broken
5050 (sysv4.2uw2.*) # Novell/SCO UnixWare 2.x (tested on 2.1.2)
5056 CF_POSIX_C_SOURCE($cf_POSIX_C_SOURCE)
5060 if test -n "$cf_xopen_source" ; then
5061 CF_APPEND_CFLAGS($cf_xopen_source,true)
5064 dnl In anything but the default case, we may have system-specific setting
5065 dnl which is still not guaranteed to provide all of the entrypoints that
5066 dnl _XOPEN_SOURCE would yield.
5067 if test -n "$cf_XOPEN_SOURCE" && test -z "$cf_cv_xopen_source" ; then
5068 AC_MSG_CHECKING(if _XOPEN_SOURCE really is set)
5069 AC_TRY_COMPILE([#include <stdlib.h>],[
5070 #ifndef _XOPEN_SOURCE
5073 [cf_XOPEN_SOURCE_set=yes],
5074 [cf_XOPEN_SOURCE_set=no])
5075 AC_MSG_RESULT($cf_XOPEN_SOURCE_set)
5076 if test "$cf_XOPEN_SOURCE_set" = yes
5078 AC_TRY_COMPILE([#include <stdlib.h>],[
5079 #if (_XOPEN_SOURCE - 0) < $cf_XOPEN_SOURCE
5082 [cf_XOPEN_SOURCE_set_ok=yes],
5083 [cf_XOPEN_SOURCE_set_ok=no])
5084 if test "$cf_XOPEN_SOURCE_set_ok" = no
5086 AC_MSG_WARN(_XOPEN_SOURCE is lower than requested)
5092 fi # cf_cv_posix_visible
5094 dnl ---------------------------------------------------------------------------
5095 dnl CF__SED_TRIMBLANKS version: 1 updated: 2021/01/02 09:31:20
5096 dnl ------------------
5097 dnl Trim something using sed, then trim extra whitespace
5098 dnl $1 = extra parameters, e.g., in CF_STRIP_G_OPT
5099 define([CF__SED_TRIMBLANKS],[sed ifelse($1,,,[$1] )-e 's%[[ ]]% %g' -e 's% [[ ]]*% %g' -e 's%^ %%' -e 's% [$]%%'])dnl