1 dnl Autoconf script for GNU Emacs
2 dnl To rebuild the 'configure' script from this, execute the command
4 dnl in the directory containing this script.
5 dnl If you changed any AC_DEFINES, also run autoheader.
7 dnl Copyright (C) 1994-1996, 1999-2021 Free Software Foundation, Inc.
9 dnl This file is part of GNU Emacs.
11 dnl GNU Emacs is free software: you can redistribute it and/or modify
12 dnl it under the terms of the GNU General Public License as published by
13 dnl the Free Software Foundation, either version 3 of the License, or
14 dnl (at your option) any later version.
16 dnl GNU Emacs is distributed in the hope that it will be useful,
17 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
18 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 dnl GNU General Public License for more details.
21 dnl You should have received a copy of the GNU General Public License
22 dnl along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
25 dnl Note this is parsed by (at least) make-dist and lisp/cedet/ede/emacs.el.
26 AC_INIT(GNU Emacs, 28.0.50, bug-gnu-emacs@gnu.org, , https://www.gnu.org/software/emacs/)
28 dnl Set emacs_config_options to the options of 'configure', quoted for the shell,
29 dnl and then quoted again for a C string. Separate options with spaces.
30 dnl Add some environment variables, if they were passed via the environment
31 dnl rather than on the command-line.
34 dnl This is the documented way to record the args passed to configure,
35 dnl rather than $ac_configure_args.
36 for opt in "$@" CFLAGS CPPFLAGS LDFLAGS; do
38 -n | --no-create | --no-recursion)
40 CFLAGS | CPPFLAGS | LDFLAGS)
41 eval 'test "${'$opt'+set}" = set' || continue
43 *" $opt="*) continue ;;
45 eval opt=$opt=\$$opt ;;
48 emacs_shell_specials=$IFS\''"#$&()*;<>?@<:@\\`{|~'
50 *[["$emacs_shell_specials"]]*)
53 emacs_quote_apostrophes="s/'/'\\\\''/g"
54 opt=`AS_ECHO(["$opt"]) | sed "$emacs_quote_apostrophes"` ;;
59 emacs_quote_for_c='s/[["\\]]/\\&/g; $!s/$/\\n\\/'
60 opt=`AS_ECHO(["$opt"]) | sed "$emacs_quote_for_c"` ;;
63 AS_VAR_APPEND([emacs_config_options], ["$optsep$opt"])
67 AC_CONFIG_HEADERS(src/config.h:src/config.in)
68 AC_CONFIG_SRCDIR(src/lisp.h)
69 AC_CONFIG_AUX_DIR(build-aux)
70 AC_CONFIG_MACRO_DIR(m4)
73 AC_CHECK_PROGS(XCRUN, [xcrun])
74 if test -n "$XCRUN"; then
75 if test -z "$MAKE"; then
76 dnl Call the variable MAKE_PROG, not MAKE, to avoid confusion with
77 dnl the usual MAKE variable that 'make' itself uses.
78 AC_CHECK_PROG([MAKE_PROG], [make], [yes])
79 if test -z "$MAKE_PROG"; then
82 xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
87 dnl Check for GNU Make and possibly set MAKE.
88 [emacs_check_gnu_make ()
90 emacs_makeout=`($1 --version) 2>/dev/null` &&
91 case $emacs_makeout in
92 'GNU Make '3.8[1-9]* | 'GNU Make '3.9[0-9]* | \
93 'GNU Make '3.[1-9][0-9][0-9]* | 'GNU Make '[4-9]* | 'GNU Make '[1-9][0-9]* )
94 ac_path_MAKE_found=:;;
97 AC_CACHE_CHECK([for GNU Make], [ac_cv_path_MAKE],
98 [ac_path_MAKE_found=false
99 if test -n "$MAKE"; then
100 emacs_check_gnu_make "$MAKE"
101 ac_cv_path_MAKE=$MAKE
103 emacs_tried_make=false
104 emacs_tried_gmake=false
105 emacs_tried_gnumake=false
106 AC_PATH_PROGS_FEATURE_CHECK([MAKE], [make gmake gnumake],
107 [[emacs_check_gnu_make "$ac_path_MAKE"
108 if $ac_path_MAKE_found; then
109 # Use the fully-qualified program name only if the basename
110 # would not resolve to it.
111 if eval \$emacs_tried_$ac_prog; then
112 ac_cv_path_MAKE=$ac_path_MAKE
114 ac_cv_path_MAKE=$ac_prog
117 eval emacs_tried_$ac_prog=:]])
119 $ac_path_MAKE_found || {
120 AC_MSG_ERROR([[Building Emacs requires GNU Make, at least version 3.81.
121 If you have it installed under another name, configure with 'MAKE=...'.
122 For example, run '$0 MAKE=gnu-make'.]])
124 MAKE=$ac_cv_path_MAKE
127 dnl Canonicalize the configuration name.
133 if test -z "$host_alias"; then
135 # No --host argument was given to 'configure'; therefore $host
136 # was set to a default value based on the build platform. But
137 # this default value may be wrong if we are building from a
138 # 64-bit MSYS[2] pre-configured to build 32-bit MinGW programs.
139 # Therefore, we'll try to get the right host platform from the
142 AC_MSG_CHECKING([the compiler's target])
143 if test -z "$CC"; then
148 cc_target=`$cc -v 2>&1 | sed -n 's/Target: //p'`
152 "") AC_MSG_ERROR([Impossible to obtain $cc compiler target.
153 Please explicitly provide --host.])
155 *) AC_MSG_WARN([Compiler reported non-standard target.
156 Defaulting to $host.])
159 AC_MSG_RESULT([$host])
162 . $srcdir/nt/mingw-cfg.site
166 # srcdir is an absolute path. In this case, force the format
167 # "/c/foo/bar", to simplify later conversions to native Windows
168 # format ("c:/foo/bar").
169 srcdir=`cd "${srcdir}" && pwd -W`
170 # 'eval' pacifies strict POSIX non-MinGW shells (Bug#18612).
171 # We downcase the drive letter to avoid warnings when
172 # generating autoloads.
173 eval 'srcdir=/`echo ${srcdir:0:1} | sed "y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/"`"${srcdir:2}"'
179 configuration=${host_alias-${build_alias-$host}}
180 emacs_uname_r=`uname -r`
182 dnl Support for --program-prefix, --program-suffix and
183 dnl --program-transform-name options
186 dnl It is important that variables on the RHS not be expanded here,
187 dnl hence the single quotes. This is per the GNU coding standards, see
188 dnl (autoconf) Installation Directory Variables
189 dnl See also epaths.h below.
190 lispdirrel='${version}/lisp'
191 lispdir='${datadir}/emacs/'${lispdirrel}
192 standardlisppath='${lispdir}'
193 locallisppath='${datadir}/emacs/${version}/site-lisp:'\
194 '${datadir}/emacs/site-lisp'
195 lisppath='${locallisppath}:${standardlisppath}'
196 etcdir='${datadir}/emacs/${version}/etc'
197 archlibdir='${libexecdir}/emacs/${version}/${configuration}'
198 etcdocdir='${datadir}/emacs/${version}/etc'
199 gamedir='${localstatedir}/games/emacs'
201 dnl Special option to disable the most of other options.
203 [AS_HELP_STRING([--without-all],
204 [omit almost all features and build
205 small executable with minimal dependencies])],
206 [with_features=$withval],
209 dnl OPTION_DEFAULT_OFF(NAME, HELP-STRING)
210 dnl Create a new --with option that defaults to being disabled.
211 dnl NAME is the base name of the option. The shell variable with_NAME
212 dnl will be set to either the user's value (if the option is
213 dnl specified; 'yes' for a plain --with-NAME) or to 'no' (if the
214 dnl option is not specified). Note that the shell variable name is
215 dnl constructed as autoconf does, by replacing non-alphanumeric
216 dnl characters with "_".
217 dnl HELP-STRING is the help text for the option.
218 AC_DEFUN([OPTION_DEFAULT_OFF], [dnl
219 AC_ARG_WITH([$1],[AS_HELP_STRING([--with-$1],[$2])],[],[dnl
220 m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=no])dnl
223 dnl OPTION_DEFAULT_IFAVAILABLE(NAME, HELP-STRING)
224 dnl Create a new --with option that defaults to 'ifavailable'.
225 dnl NAME is the base name of the option. The shell variable with_NAME
226 dnl will be set to either the user's value (if the option is
227 dnl specified; 'yes' for a plain --with-NAME) or to 'ifavailable' (if the
228 dnl option is not specified). Note that the shell variable name is
229 dnl constructed as autoconf does, by replacing non-alphanumeric
230 dnl characters with "_".
231 dnl HELP-STRING is the help text for the option.
232 AC_DEFUN([OPTION_DEFAULT_IFAVAILABLE], [dnl
233 AC_ARG_WITH([$1],[AS_HELP_STRING([--with-$1],[$2])],[],[dnl
234 m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=ifavailable])dnl
238 dnl OPTION_DEFAULT_ON(NAME, HELP-STRING)
239 dnl Create a new --with option that defaults to $with_features.
240 dnl NAME is the base name of the option. The shell variable with_NAME
241 dnl will be set either to 'no' (for a plain --without-NAME) or to
242 dnl 'yes' (if the option is not specified). Note that the shell
243 dnl variable name is constructed as autoconf does, by replacing
244 dnl non-alphanumeric characters with "_".
245 dnl HELP-STRING is the help text for the option.
246 AC_DEFUN([OPTION_DEFAULT_ON], [dnl
247 AC_ARG_WITH([$1],[AS_HELP_STRING([--without-$1],[$2])],[],[dnl
248 m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=$with_features])dnl
251 # For retrieving mail, unencrypted network connections are the default
252 # only on native MS-Windows platforms. (FIXME: These platforms should
253 # also be secure by default.)
255 AC_ARG_WITH([mailutils],
256 [AS_HELP_STRING([--with-mailutils],
257 [rely on GNU Mailutils, so that the --without-pop through --with-mailhost
258 options are irrelevant; this is the default if GNU Mailutils is
261 [with_mailutils=$with_features
262 if test "$with_mailutils" = yes; then
263 (movemail --version) >/dev/null 2>&1 || with_mailutils=no
265 if test "$with_mailutils" = no; then
268 AC_SUBST([with_mailutils])
271 [AS_HELP_STRING([--with-pop],
272 [Support POP mail retrieval if Emacs movemail is used (not recommended,
273 as Emacs movemail POP is insecure). This is the default only on
274 native MS-Windows.])],
277 *-mingw*) with_pop=yes;;
278 *) with_pop=no-by-default;;
280 if test "$with_pop" = yes; then
281 AC_DEFINE(MAIL_USE_POP)
283 AH_TEMPLATE(MAIL_USE_POP, [Define to support POP mail retrieval.])dnl
285 OPTION_DEFAULT_OFF([kerberos],[support Kerberos-authenticated POP])
286 if test "$with_kerberos" != no; then
289 AH_TEMPLATE(KERBEROS,
290 [Define to support Kerberos-authenticated POP mail retrieval.])dnl
292 OPTION_DEFAULT_OFF([kerberos5],[support Kerberos version 5 authenticated POP])
293 if test "${with_kerberos5}" != no; then
294 if test "${with_kerberos}" = no; then
298 AC_DEFINE(KERBEROS5, 1, [Define to use Kerberos 5 instead of Kerberos 4.])
301 OPTION_DEFAULT_OFF([hesiod],[support Hesiod to get the POP server host])
302 dnl FIXME hesiod support may not be present, so it seems like an error
303 dnl to define, or at least use, this unconditionally.
304 if test "$with_hesiod" != no; then
305 AC_DEFINE(HESIOD, 1, [Define to support using a Hesiod database to find the POP server.])
308 OPTION_DEFAULT_OFF([mail-unlink],[unlink, rather than empty, mail spool after reading])
309 if test "$with_mail_unlink" != no; then
310 AC_DEFINE(MAIL_UNLINK_SPOOL, 1, [Define to unlink, rather than empty, mail spool after reading.])
313 AC_ARG_WITH([mailhost],[AS_HELP_STRING([--with-mailhost=HOSTNAME],
314 [string giving default POP mail host])],
315 AC_DEFINE_UNQUOTED(MAILHOST, ["$withval"], [String giving fallback POP mail host.]))
317 AC_ARG_WITH([sound],[AS_HELP_STRING([--with-sound=VALUE],
318 [compile with sound support (VALUE one of: yes, alsa, oss, bsd-ossaudio, no;
319 default yes). Only for GNU/Linux, FreeBSD, NetBSD, MinGW, Cygwin.])],
320 [ case "${withval}" in
321 yes|no|alsa|oss|bsd-ossaudio) val=$withval ;;
322 *) AC_MSG_ERROR(['--with-sound=$withval' is invalid;
323 this option's value should be 'yes', 'no', 'alsa', 'oss', or 'bsd-ossaudio'.])
328 [with_sound=$with_features])
330 AC_ARG_WITH([pdumper],
332 [--with-pdumper=VALUE],
333 [enable pdumper support unconditionally
334 ('yes', 'no', or 'auto': default 'auto')]),
335 [ case "${withval}" in
336 yes|no|auto) val=$withval ;;
338 ['--with-pdumper=$withval' is invalid;
339 this option's value should be 'yes' or 'no'.]) ;;
345 AC_ARG_WITH([unexec],
347 [--with-unexec=VALUE],
348 [enable unexec support unconditionally
349 ('yes', 'no', or 'auto': default 'auto')]),
350 [ case "${withval}" in
351 yes|no|auto) val=$withval ;;
353 ['--with-unexec=$withval' is invalid;
354 this option's value should be 'yes' or 'no'.]) ;;
360 AC_ARG_WITH([dumping],[AS_HELP_STRING([--with-dumping=VALUE],
361 [kind of dumping to use for initial Emacs build
362 (VALUE one of: pdumper, unexec, none; default pdumper)])],
363 [ case "${withval}" in
364 pdumper|unexec|none) val=$withval ;;
365 *) AC_MSG_ERROR(['--with-dumping=$withval is invalid;
366 this option's value should be 'pdumper', 'unexec', or 'none'.])
371 [with_dumping=pdumper])
373 if test "$with_pdumper" = "auto"; then
374 if test "$with_dumping" = "pdumper"; then
381 if test "$with_unexec" = "auto"; then
382 if test "$with_dumping" = "unexec"; then
389 if test "$with_dumping" = "pdumper" && test "$with_pdumper" = "no"; then
390 AC_MSG_ERROR(['--with-dumping=pdumper' requires pdumper support])
393 if test "$with_dumping" = "unexec" && test "$with_unexec" = "no"; then
394 AC_MSG_ERROR(['--with-dumping=unexec' requires unexec support])
397 if test "$with_pdumper" = "yes"; then
398 AC_DEFINE([HAVE_PDUMPER], 1, [Define to build with portable dumper support])
403 AC_SUBST([HAVE_PDUMPER])
405 DUMPING=$with_dumping
408 dnl FIXME currently it is not the last.
409 dnl This should be the last --with option, because --with-x is
410 dnl added later on when we find the file name of X, and it's best to
411 dnl keep them together visually.
412 AC_ARG_WITH([x-toolkit],[AS_HELP_STRING([--with-x-toolkit=KIT],
413 [use an X toolkit (KIT one of: yes or gtk, gtk2, gtk3, lucid or athena, no)])],
414 [ case "${withval}" in
415 y | ye | yes ) val=gtk ;;
417 l | lu | luc | luci | lucid ) val=lucid ;;
418 a | at | ath | athe | athen | athena ) val=athena ;;
419 g | gt | gtk ) val=gtk ;;
423 AC_MSG_ERROR(['--with-x-toolkit=$withval' is invalid;
424 this option's value should be 'yes', 'no', 'lucid', 'athena', 'gtk',
425 'gtk2' or 'gtk3'. 'yes' and 'gtk' are synonyms.
426 'athena' and 'lucid' are synonyms.])
432 OPTION_DEFAULT_OFF([wide-int],
433 [prefer wide Emacs integers (typically 62-bit);
434 on 32-bit hosts, this allows buffer and string size up to 2GB,
435 at the cost of 10% to 30% slowdown of Lisp interpreter
436 and larger memory footprint])
437 if test "$with_wide_int" = yes; then
438 AC_DEFINE([WIDE_EMACS_INT], 1, [Use long long for EMACS_INT if available.])
441 dnl _ON results in a '--without' option in the --help output, so
442 dnl the help text should refer to "don't compile", etc.
443 with_xpm_set=${with_xpm+set}
444 OPTION_DEFAULT_ON([xpm],[don't compile with XPM image support])
445 OPTION_DEFAULT_ON([jpeg],[don't compile with JPEG image support])
446 OPTION_DEFAULT_ON([tiff],[don't compile with TIFF image support])
447 OPTION_DEFAULT_ON([gif],[don't compile with GIF image support])
448 OPTION_DEFAULT_ON([png],[don't compile with PNG image support])
449 OPTION_DEFAULT_ON([rsvg],[don't compile with SVG image support])
450 OPTION_DEFAULT_ON([lcms2],[don't compile with Little CMS support])
451 OPTION_DEFAULT_ON([libsystemd],[don't compile with libsystemd support])
452 OPTION_DEFAULT_ON([cairo],[don't compile with Cairo drawing])
453 OPTION_DEFAULT_ON([xml2],[don't compile with XML parsing support])
454 OPTION_DEFAULT_OFF([imagemagick],[compile with ImageMagick image support])
455 OPTION_DEFAULT_ON([native-image-api], [don't use native image APIs (GDI+ on Windows)])
456 OPTION_DEFAULT_IFAVAILABLE([json], [compile with native JSON support])
458 OPTION_DEFAULT_ON([xft],[don't use XFT for anti aliased fonts])
459 OPTION_DEFAULT_ON([harfbuzz],[don't use HarfBuzz for text shaping])
460 OPTION_DEFAULT_ON([libotf],[don't use libotf for OpenType font support])
461 OPTION_DEFAULT_ON([m17n-flt],[don't use m17n-flt for text shaping])
463 OPTION_DEFAULT_ON([toolkit-scroll-bars],[don't use Xaw3d/GTK toolkit scroll bars])
464 OPTION_DEFAULT_ON([xaw3d],[don't use Xaw3d])
465 OPTION_DEFAULT_ON([xim],[at runtime, default X11 XIM to off])
466 OPTION_DEFAULT_ON([xdbe],[don't use X11 double buffering support])
467 AC_ARG_WITH([ns],[AS_HELP_STRING([--with-ns],
468 [use Nextstep (macOS Cocoa or GNUstep) windowing system.
469 On by default on macOS.])],[],[with_ns=maybe])
470 OPTION_DEFAULT_OFF([w32], [use native MS Windows GUI in a Cygwin build])
472 OPTION_DEFAULT_ON([gpm],[don't use -lgpm for mouse support on a GNU/Linux console])
473 OPTION_DEFAULT_ON([dbus],[don't compile with D-Bus support])
474 AC_ARG_WITH([gconf],[AS_HELP_STRING([--with-gconf],
475 [compile with Gconf support (Gsettings replaces this)])],[],
476 [if test $with_features = yes; then
481 OPTION_DEFAULT_ON([gsettings],[don't compile with GSettings support])
482 OPTION_DEFAULT_ON([selinux],[don't compile with SELinux support])
483 OPTION_DEFAULT_ON([gnutls],[don't use -lgnutls for SSL/TLS support])
484 OPTION_DEFAULT_ON([zlib],[don't compile with zlib decompression support])
485 OPTION_DEFAULT_ON([modules],[don't compile with dynamic modules support])
486 OPTION_DEFAULT_ON([threads],[don't compile with elisp threading support])
487 OPTION_DEFAULT_OFF([native-compilation],[compile with Emacs Lisp native compiler support])
489 AC_ARG_WITH([file-notification],[AS_HELP_STRING([--with-file-notification=LIB],
490 [use a file notification library (LIB one of: yes, inotify, kqueue, gfile, w32, no)])],
491 [ case "${withval}" in
492 y | ye | yes ) val=yes ;;
494 i | in | ino | inot | inoti | inotif | inotify ) val=inotify ;;
495 k | kq | kqu | kque | kqueu | kqueue ) val=kqueue ;;
496 g | gf | gfi | gfil | gfile ) val=gfile ;;
497 w | w3 | w32 ) val=w32 ;;
498 * ) AC_MSG_ERROR(['--with-file-notification=$withval' is invalid;
499 this option's value should be 'yes', 'no', 'inotify', 'kqueue', 'gfile' or 'w32'.
500 'yes' is a synonym for 'w32' on MS-Windows, for 'no' on Nextstep,
501 otherwise for the first of 'inotify', 'kqueue' or 'gfile' that is usable.])
504 with_file_notification=$val
506 [with_file_notification=$with_features])
508 OPTION_DEFAULT_OFF([xwidgets],
509 [enable use of xwidgets in Emacs buffers (requires gtk3 or macOS Cocoa)])
511 ## Makefile.in needs the cache file name.
514 ## This is an option because I do not know if all info/man support
515 ## compressed files, nor how to test if they do so.
516 OPTION_DEFAULT_ON([compress-install],
517 [don't compress some files (.el, .info, etc.) when installing. Equivalent to:
518 make GZIP_PROG= install])
520 AC_ARG_WITH(gameuser,dnl
521 [AS_HELP_STRING([--with-gameuser=USER_OR_GROUP],
522 [user for shared game score files.
523 An argument prefixed by ':' specifies a group instead.])])
526 case ${with_gameuser} in
528 yes) gamegroup=games ;;
529 :*) gamegroup=${with_gameuser#:} ;;
530 *) gameuser=${with_gameuser} ;;
533 AC_ARG_WITH([gnustep-conf],dnl
534 [AS_HELP_STRING([--with-gnustep-conf=FILENAME],
535 [name of GNUstep configuration file to use on systems where the command
536 'gnustep-config' does not work; default $GNUSTEP_CONFIG_FILE, or
537 /etc/GNUstep/GNUstep.conf])])
538 test "X${with_gnustep_conf}" != X && test "${with_gnustep_conf}" != yes && \
539 GNUSTEP_CONFIG_FILE="${with_gnustep_conf}"
540 test "X$GNUSTEP_CONFIG_FILE" = "X" && \
541 GNUSTEP_CONFIG_FILE=/etc/GNUstep/GNUstep.conf
543 AC_ARG_ENABLE(ns-self-contained,
544 [AS_HELP_STRING([--disable-ns-self-contained],
545 [disable self contained build under NeXTstep])],
546 EN_NS_SELF_CONTAINED=$enableval,
547 EN_NS_SELF_CONTAINED=yes)
550 AC_ARG_ENABLE(locallisppath,
551 [AS_HELP_STRING([--enable-locallisppath=PATH],
552 [directories Emacs should search for lisp files specific
554 if test "${enableval}" = "no"; then
556 elif test "${enableval}" != "yes"; then
557 locallisppath=${enableval} locallisppathset=yes
560 AC_ARG_ENABLE(checking,
561 [AS_HELP_STRING([--enable-checking@<:@=LIST@:>@],
562 [enable expensive checks. With LIST,
563 enable only specific categories of checks.
564 Categories are: all,yes,no.
565 Flags are: stringbytes, stringoverrun, stringfreelist,
567 [ac_checking_flags="${enableval}"],[])
568 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
570 for check in $ac_checking_flags
573 # these set all the flags to specific states
574 yes) ac_enable_checking=1 ;;
575 no) ac_enable_checking= ;
577 ac_gc_check_stringbytes= ;
578 ac_gc_check_string_overrun= ;
579 ac_gc_check_string_free_list= ;
581 all) ac_enable_checking=1 ;
583 ac_gc_check_stringbytes=1 ;
584 ac_gc_check_string_overrun=1 ;
585 ac_gc_check_string_free_list=1 ;
587 # these enable particular checks
588 stringbytes) ac_gc_check_stringbytes=1 ;;
589 stringoverrun) ac_gc_check_string_overrun=1 ;;
590 stringfreelist) ac_gc_check_string_free_list=1 ;;
591 structs) CHECK_STRUCTS=true ;;
592 glyphs) ac_glyphs_debug=1 ;;
593 *) AC_MSG_ERROR(unknown check category $check) ;;
598 if test x$ac_enable_checking != x ; then
599 AC_DEFINE(ENABLE_CHECKING, 1,
600 [Define to 1 if expensive run-time data type and consistency checks are enabled.])
602 if $CHECK_STRUCTS; then
603 AC_DEFINE([CHECK_STRUCTS], 1,
604 [Define this to check whether someone updated the portable dumper
605 code after changing the layout of a structure that it uses.
606 If you change one of these structures, check that the pdumper.c
607 code is still valid, and update the pertinent hash in pdumper.c
608 by manually copying the hash from the newly-generated dmpstruct.h.])
610 AC_SUBST([CHECK_STRUCTS])
611 if test x$ac_gc_check_stringbytes != x ; then
612 AC_DEFINE(GC_CHECK_STRING_BYTES, 1,
613 [Define this temporarily to hunt a bug. If defined, the size of
614 strings is redundantly recorded in sdata structures so that it can
615 be compared to the sizes recorded in Lisp strings.])
617 if test x$ac_gc_check_string_overrun != x ; then
618 AC_DEFINE(GC_CHECK_STRING_OVERRUN, 1,
619 [Define this to check for short string overrun.])
621 if test x$ac_gc_check_string_free_list != x ; then
622 AC_DEFINE(GC_CHECK_STRING_FREE_LIST, 1,
623 [Define this to check the string free list.])
625 if test x$ac_glyphs_debug != x ; then
626 AC_DEFINE(GLYPH_DEBUG, 1,
627 [Define this to enable glyphs debugging code.])
630 dnl The name of this option is unfortunate. It predates, and has no
631 dnl relation to, the "sampling-based elisp profiler" added in 24.3.
632 dnl Actually, it stops it working.
633 dnl https://lists.gnu.org/r/emacs-devel/2012-11/msg00393.html
634 AC_ARG_ENABLE(profiling,
635 [AS_HELP_STRING([--enable-profiling],
636 [build emacs with low-level, gprof profiling support.
637 Mainly useful for debugging Emacs itself. May not work on
638 all platforms. Stops profiler.el working.])],
639 [ac_enable_profiling="${enableval}"],[])
640 if test x$ac_enable_profiling != x ; then
641 PROFILING_CFLAGS="-DPROFILING=1 -pg"
645 AC_SUBST(PROFILING_CFLAGS)
647 AC_ARG_ENABLE(autodepend,
648 [AS_HELP_STRING([--enable-autodepend],
649 [automatically generate dependencies to .h-files.
650 Requires gcc, enabled if found.])],
651 [ac_enable_autodepend="${enableval}"],[ac_enable_autodepend=yes])
653 AC_ARG_ENABLE(gtk-deprecation-warnings,
654 [AS_HELP_STRING([--enable-gtk-deprecation-warnings],
655 [Show Gtk+/Gdk deprecation warnings for Gtk+ >= 3.0])],
656 [ac_enable_gtk_deprecation_warnings="${enableval}"],[])
659 AC_ARG_ENABLE([build-details],
660 [AS_HELP_STRING([--disable-build-details],
661 [Make the build more deterministic by omitting host
662 names, time stamps, etc. from the output.])],
663 [test "$enableval" = no && BUILD_DETAILS=--no-build-details])
664 AC_SUBST([BUILD_DETAILS])
666 dnl This used to use changequote, but, apart from 'changequote is evil'
667 dnl per the autoconf manual, we can speed up autoconf somewhat by quoting
668 dnl the great gob of text. Thus it's not processed for possible expansion.
669 dnl Just make sure the brackets remain balanced.
671 dnl Since Emacs can't find matching pairs of quotes, boundaries are
672 dnl indicated by comments.
676 ### If you add support for a new configuration, add code to this
677 ### switch statement to recognize your configuration name and select
678 ### the appropriate opsys.
680 ### As far as handling version numbers on operating systems is
681 ### concerned, make sure things will fail in a fixable way. If
682 ### /etc/MACHINES doesn't say anything about version numbers, be
683 ### prepared to handle anything reasonably. If version numbers
684 ### matter, be sure /etc/MACHINES says something about it.
687 case "${canonical}" in
689 ## GNU/Linux and similar ports
704 ## FreeBSD kernel + glibc based userland
715 *-*-openbsd* | *-*-mirbsd* )
719 ## Apple Darwin / macOS
721 case "${canonical}" in
722 *-apple-darwin[0-9].*) unported=yes ;;
723 i[3456]86-* | x86_64-* | arm-* | aarch64-* ) ;;
727 ## FIXME: Find a way to use Fink if available (Bug#11507).
730 ## Chromium Native Client
740 ## HP 9000 series 700 and 800, running HP/UX
744 hppa*-hp-hpux1[1-9]* )
746 CFLAGS="-D_INCLUDE__STDC_A1_SOURCE $CFLAGS"
750 rs6000-ibm-aix4.[23]* )
753 powerpc-ibm-aix4.[23]* )
756 rs6000-ibm-aix[56]* )
759 powerpc-ibm-aix[5-9]* | powerpc-ibm-aix[1-9][0-9]* )
764 *-*-solaris* | *-*-sunos*)
765 case "${canonical}" in
767 amd64-*-*|x86_64-*-*) ;;
772 ## Watch out for a compiler that we know will not work.
773 if [ "$CC" = /usr/ucb/cc ]; then
774 ## /usr/ucb/cc doesn't work;
775 ## we should find some other compiler that does work.
783 test -z "$CC" && CC=qcc
784 LDFLAGS="-N2M $LDFLAGS"
787 ## Intel 386 machines where we don't care about the manufacturer.
789 case "${canonical}" in
790 *-darwin* ) opsys=darwin ;;
793 # MinGW overrides and adds some system headers in nt/inc.
794 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
796 *-sysv4.2uw* ) opsys=unixware ;;
797 *-sysv5uw* ) opsys=unixware ;;
798 *-sysv5OpenUNIX* ) opsys=unixware ;;
799 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
805 case "${canonical}" in
808 # MinGW overrides and adds some system headers in nt/inc.
809 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
811 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
820 ### If the code above didn't choose an operating system, just choose
821 ### an operating system based on the configuration name. You really
822 ### only want to use this when you have no idea what the right
823 ### operating system is; if you know what operating systems a machine
824 ### runs, it's cleaner to make it explicit in the case statement
826 if test x"${opsys}" = x; then
827 case "${canonical}" in
828 *-gnu* ) opsys=gnu ;;
838 if test $unported = yes; then
839 AC_MSG_ERROR([Emacs does not support '${canonical}' systems.
840 If you think it should, please send a report to ${PACKAGE_BUGREPORT}.
841 Check 'etc/MACHINES' for recognized configuration names.])
844 #### Choose a compiler.
846 dnl Don't bother to test for C89.
847 AC_DEFUN([_AC_PROG_CC_C89], [$2])
849 dnl Sets GCC=yes if using gcc.
850 AC_PROG_CC([gcc cc cl clang "$XCRUN gcc" "$XCRUN clang"])
851 if test -n "$XCRUN"; then
852 AC_CHECK_PROGS(AR, [ar "$XCRUN ar"])
853 test -n "$AR" && export AR
856 dnl Emacs needs C99 or later.
861 if test x$GCC = xyes; then
862 test "x$GCC_TEST_OPTIONS" != x && CC="$CC $GCC_TEST_OPTIONS"
865 # Avoid gnulib's tests for -lcrypto, so that there's no static dependency on it.
866 AC_DEFUN([gl_CRYPTO_CHECK])
867 # Avoid gnulib's tests for HAVE_WORKING_O_NOATIME and HAVE_WORKING_O_NOFOLLOW,
868 # as we don't use them.
869 AC_DEFUN([gl_FCNTL_O_FLAGS])
870 # Avoid gnulib's test for pthread_sigmask.
872 for func in $ac_func_list; do
873 test $func = pthread_sigmask || AS_VAR_APPEND([funcs], [" $func"])
876 # Emacs does not use the wchar or wctype-h modules.
877 AC_DEFUN([gt_TYPE_WINT_T],
878 [GNULIB_OVERRIDES_WINT_T=0
879 AC_SUBST([GNULIB_OVERRIDES_WINT_T])])
881 # Initialize gnulib right after choosing the compiler.
882 dnl Amongst other things, this sets AR and ARFLAGS.
885 if test "$ac_test_CFLAGS" != set; then
886 # It's helpful to have C macros available to GDB, so prefer -g3 to -g
887 # if -g3 works and the user does not specify CFLAGS.
888 # This test must follow gl_EARLY; otherwise AC_LINK_IFELSE complains.
891 emacs_g3_CFLAGS='-g3';;
893 emacs_g3_CFLAGS='-g3 -O2';;
897 if test -n "$emacs_g3_CFLAGS"; then
898 emacs_save_CFLAGS=$CFLAGS
899 CFLAGS=$emacs_g3_CFLAGS
900 AC_CACHE_CHECK([whether $CC accepts $emacs_g3_CFLAGS],
901 [emacs_cv_prog_cc_g3],
902 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
903 [emacs_cv_prog_cc_g3=yes],
904 [emacs_cv_prog_cc_g3=no])])
905 if test $emacs_cv_prog_cc_g3 != yes; then
906 CFLAGS=$emacs_save_CFLAGS
908 if test $opsys = mingw32; then
909 CFLAGS="$CFLAGS -gdwarf-2"
916 # No optimization flag was inferred for this non-GCC compiler.
917 # Try -O. This is needed for xlc on AIX; see Bug#14258.
918 emacs_save_CFLAGS=$CFLAGS
919 test -z "$CFLAGS" || CFLAGS="$CFLAGS "
921 AC_CACHE_CHECK([whether $CC accepts -O],
922 [emacs_cv_prog_cc_o],
923 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
924 [emacs_cv_prog_cc_o=yes],
925 [emacs_cv_prog_cc_o=no])])
926 if test $emacs_cv_prog_cc_o != yes; then
927 CFLAGS=$emacs_save_CFLAGS
932 # gl_GCC_VERSION_IFELSE([major], [minor], [run-if-found], [run-if-not-found])
933 # ---------------------------------------------------------------------------
934 # If $CPP is gcc-MAJOR.MINOR or newer, then run RUN-IF-FOUND.
935 # Otherwise, run RUN-IF-NOT-FOUND.
936 AC_DEFUN([gl_GCC_VERSION_IFELSE],
940 #if ($1) < __GNUC__ || (($1) == __GNUC__ && ($2) <= __GNUC_MINOR__)
943 # error "your version of gcc is older than $1.$2"
950 AC_ARG_ENABLE([gcc-warnings],
951 [AS_HELP_STRING([--enable-gcc-warnings@<:@=TYPE@:>@],
952 [control generation of GCC warnings. The TYPE 'yes'
953 means to fail if any warnings are issued; 'warn-only'
954 means issue warnings without failing (default for
955 developer builds); 'no' means disable warnings
956 (default for non-developer builds).])],
959 *) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
961 gl_gcc_warnings=$enableval],
962 [# By default, use 'warn-only' if it looks like the invoker of 'configure'
963 # is a developer as opposed to a builder. This is most likely true
964 # if GCC is recent enough and there is a .git directory or file;
965 # however, if there is also a .tarball-version file it is probably
966 # just a release imported into Git for patch management.
968 if test -e "$srcdir"/.git && test ! -f "$srcdir"/.tarball-version; then
969 gl_GCC_VERSION_IFELSE([5], [3], [gl_gcc_warnings=warn-only])
972 AC_ARG_ENABLE([check-lisp-object-type],
973 [AS_HELP_STRING([--enable-check-lisp-object-type],
974 [Enable compile time checks for the Lisp_Object data type,
975 which can catch some bugs during development.])])
976 if test "$enable_check_lisp_object_type" = yes; then
977 AC_DEFINE([CHECK_LISP_OBJECT_TYPE], 1,
978 [Define to enable compile-time checks for the Lisp_Object data type.])
981 # clang is unduly picky about some things.
982 AC_CACHE_CHECK([whether the compiler is clang], [emacs_cv_clang],
989 [emacs_cv_clang=yes],
990 [emacs_cv_clang=no])])
993 # When compiling with GCC, prefer -isystem to -I when including system
994 # include files, to avoid generating useless diagnostics for the files.
995 AS_IF([test $gl_gcc_warnings = no],
998 AS_IF([test "$emacs_cv_clang" = yes],
1000 # Turn off some warnings if supported.
1001 gl_WARN_ADD([-Wno-switch])
1002 gl_WARN_ADD([-Wno-pointer-sign])
1003 gl_WARN_ADD([-Wno-string-plus-int])
1004 gl_WARN_ADD([-Wno-unknown-attributes])
1009 # This, $nw, is the list of warnings we disable.
1012 case $with_x_toolkit in
1013 lucid | athena | motif)
1014 # Old toolkits mishandle 'const'.
1015 nw="$nw -Wwrite-strings"
1018 AS_IF([test $gl_gcc_warnings = yes],
1019 [WERROR_CFLAGS=-Werror],
1020 [# Use -fanalyzer and related options only if --enable-gcc-warnings,
1021 # as they slow GCC considerably.
1022 nw="$nw -fanalyzer -Wno-analyzer-double-free -Wno-analyzer-malloc-leak"
1023 nw="$nw -Wno-analyzer-null-dereference -Wno-analyzer-use-after-free"
1024 # Use -Wsuggest-attribute=malloc only if --enable-gcc-warnings,
1025 # as it doesn't flag code that is wrong in any way.
1026 nw="$nw -Wsuggest-attribute=malloc"])
1028 nw="$nw -Wcast-align=strict" # Emacs is tricky with pointers.
1029 nw="$nw -Wduplicated-branches" # Too many false alarms
1030 nw="$nw -Wformat-overflow=2" # False alarms due to GCC bug 80776
1031 nw="$nw -Wsystem-headers" # Don't let system headers trigger warnings
1032 nw="$nw -Woverlength-strings" # Not a problem these days
1033 nw="$nw -Wvla" # Emacs uses <vla.h>.
1034 nw="$nw -Wunused-const-variable=2" # lisp.h declares const objects.
1035 nw="$nw -Winline" # OK to ignore 'inline'
1036 nw="$nw -Wstrict-overflow" # OK to optimize assuming that
1037 # signed overflow has undefined behavior
1038 nw="$nw -Wsync-nand" # irrelevant here, and provokes ObjC warning
1039 nw="$nw -Wunsafe-loop-optimizations" # OK to suppress unsafe optimizations
1040 nw="$nw -Wbad-function-cast" # These casts are no worse than others.
1042 # Emacs doesn't care about shadowing; see
1043 # <https://lists.gnu.org/r/emacs-diffs/2011-11/msg00265.html>.
1046 # Emacs's use of alloca inhibits protecting the stack.
1047 nw="$nw -Wstack-protector"
1049 # Emacs's use of __attribute__ ((cold)) causes false alarms with this option.
1050 nw="$nw -Wsuggest-attribute=cold"
1052 # Emacs's use of partly-const functions such as Fgnutls_available_p
1053 # make this option problematic.
1054 nw="$nw -Wsuggest-attribute=const"
1056 # Emacs's use of partly-pure functions such as CHECK_TYPE make this
1057 # option problematic.
1058 nw="$nw -Wsuggest-attribute=pure"
1060 if test "$emacs_cv_clang" = yes; then
1061 nw="$nw -Wdouble-promotion"
1064 # This causes too much noise in the MinGW build.
1065 if test $opsys = mingw32; then
1066 nw="$nw -Wsuggest-attribute=format"
1069 gl_MANYWARN_ALL_GCC([ws])
1070 gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
1074 gl_WARN_ADD([-Wredundant-decls]) # Prefer this, as we don't use Bison.
1075 gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
1076 gl_WARN_ADD([-Wno-override-init]) # More trouble than it is worth
1077 gl_WARN_ADD([-Wno-sign-compare]) # Too many warnings for now
1078 gl_WARN_ADD([-Wno-type-limits]) # Too many warnings for now
1079 gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
1080 gl_WARN_ADD([-Wno-format-nonliteral])
1082 # clang is unduly picky about some things.
1083 if test "$emacs_cv_clang" = yes; then
1084 gl_WARN_ADD([-Wno-missing-braces])
1085 gl_WARN_ADD([-Wno-null-pointer-arithmetic])
1088 # This causes too much noise in the MinGW build
1089 if test $opsys = mingw32; then
1090 gl_WARN_ADD([-Wno-pointer-sign])
1093 AC_DEFINE([GCC_LINT], [1], [Define to 1 if --enable-gcc-warnings.])
1094 AS_IF([test $gl_gcc_warnings = yes],
1095 [AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
1096 AH_VERBATIM([GNULIB_PORTCHECK_FORTIFY_SOURCE],
1097 [/* Enable compile-time and run-time bounds-checking, and some warnings,
1098 without upsetting glibc 2.15+. */
1099 #if (defined GNULIB_PORTCHECK && !defined _FORTIFY_SOURCE \
1100 && defined __OPTIMIZE__ && __OPTIMIZE__)
1101 # define _FORTIFY_SOURCE 2
1106 # clang is picky about these regardless of whether
1107 # --enable-gcc-warnings is specified.
1108 if test "$emacs_cv_clang" = yes; then
1109 gl_WARN_ADD([-Wno-initializer-overrides])
1110 gl_WARN_ADD([-Wno-tautological-compare])
1111 gl_WARN_ADD([-Wno-tautological-constant-out-of-range-compare])
1114 # Use a slightly smaller set of warning options for lib/.
1116 nw="$nw -Wunused-macros"
1117 gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
1119 AC_SUBST([WERROR_CFLAGS])
1120 AC_SUBST([GNULIB_WARN_CFLAGS])
1129 AC_ARG_ENABLE(link-time-optimization,
1130 [AS_HELP_STRING([--enable-link-time-optimization],
1131 [build with link-time optimization
1132 (experimental; see INSTALL)])],
1133 if test "${enableval}" != "no"; then
1135 if test "$emacs_cv_clang" = yes; then
1136 AC_MSG_CHECKING([whether link-time optimization is supported by clang])
1137 GOLD_PLUGIN=`$CC -print-file-name=LLVMgold.so 2>/dev/null`
1138 if test -x "$GOLD_PLUGIN"; then
1141 elif test x$GCC = xyes; then
1142 AC_MSG_CHECKING([whether link-time optimization is supported by gcc])
1143 CPUS=`getconf _NPROCESSORS_ONLN 2>/dev/null`
1144 if test x$CPUS != x; then
1150 AC_MSG_ERROR([Link-time optimization is not supported with your compiler.])
1152 if test -z "$LTO"; then
1156 CFLAGS="$CFLAGS $LTO"
1157 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1158 [ac_lto_supported=yes], [ac_lto_supported=no])
1159 CFLAGS="$old_CFLAGS"
1161 AC_MSG_RESULT([$ac_lto_supported])
1162 if test "$ac_lto_supported" = "yes"; then
1163 CFLAGS="$CFLAGS $LTO"
1164 if test "$emacs_cv_clang" = yes; then
1165 AC_MSG_WARN([Please read INSTALL before using link-time optimization with clang])
1166 # WARNING: 'ar --plugin ...' doesn't work without
1167 # command, so plugin name is appended to ARFLAGS.
1168 ARFLAGS="cru --plugin $GOLD_PLUGIN"
1169 RANLIB="$RANLIB --plugin $GOLD_PLUGIN"
1171 dnl The following is needed for GCC 4.9.0. The GCC 4.9.0 release notes
1172 dnl suggest that instead of -ffat-lto-objects we should use gcc-ar and
1173 dnl gcc-ranlib in place of ar and ranlib, but gcc-ar makes /usr/bin/ar
1174 dnl dump core on Fedora 20, so play it safe for now.
1175 gl_COMPILER_OPTION_IF([-ffat-lto-objects],
1176 [CFLAGS="$CFLAGS -ffat-lto-objects"])
1182 dnl Automake replacements.
1183 AC_DEFUN([AM_CONDITIONAL],
1187 dnl Prefer silent make output. For verbose output, use
1188 dnl 'configure --disable-silent-rules' or 'make V=1' .
1189 AC_ARG_ENABLE([silent-rules],
1191 [--disable-silent-rules],
1192 [verbose build output (undo: "make V=0")])])
1193 if test "$enable_silent_rules" = no; then
1194 AM_DEFAULT_VERBOSITY=1
1196 AM_DEFAULT_VERBOSITY=0
1198 AC_SUBST([AM_DEFAULT_VERBOSITY])
1199 AC_CONFIG_FILES([src/verbose.mk])
1201 dnl Some other nice autoconf tests.
1203 dnl These are commented out, since gl_EARLY and/or Autoconf already does them.
1205 dnl if test "x$RANLIB" = x; then
1210 dnl Sadly, AC_PROG_LN_S is too restrictive. It also tests whether links
1211 dnl can be made to directories. This is not relevant for our usage, and
1212 dnl excludes some cases that work fine for us. Eg MS Windows or files
1213 dnl hosted on AFS, both examples where simple links work, but links to
1214 dnl directories fail. We use a cut-down version instead.
1217 AC_CACHE_CHECK([command to symlink files in the same directory], [emacs_cv_ln_s_fileonly],
1218 [rm -f conf$$ conf$$.file
1220 emacs_cv_ln_s_fileonly='cp -p'
1222 dnl On MinGW, ensure we will call the MSYS /bin/ln.exe, not some
1223 dnl random program in the current directory.
1224 if (echo >conf$$.file) 2>/dev/null; then
1225 if test "$opsys" = "mingw32"; then
1226 emacs_cv_ln_s_fileonly=/bin/ln
1227 elif ln -s conf$$.file conf$$ 2>/dev/null; then
1228 emacs_cv_ln_s_fileonly='ln -s'
1229 elif ln conf$$.file conf$$ 2>/dev/null; then
1230 emacs_cv_ln_s_fileonly=ln
1234 rm -f conf$$ conf$$.file])
1235 LN_S_FILEONLY=$emacs_cv_ln_s_fileonly
1237 AC_SUBST(LN_S_FILEONLY)
1240 dnl AC_PROG_LN_S sets LN_S to 'cp -pR' for MinGW, on the premise that 'ln'
1241 dnl doesn't support links to directories, as in "ln file dir". But that
1242 dnl use is non-portable, and OTOH MinGW wants to use hard links for Emacs
1243 dnl executables at "make install" time.
1244 dnl See https://lists.gnu.org/r/emacs-devel/2013-04/msg00475.html
1245 dnl for more details.
1246 if test "$opsys" = "mingw32"; then
1250 dnl On some Debian versions, "install-info" prints irritating messages
1251 dnl "This is not dpkg install-info anymore, but GNU install-info"
1252 dnl if called via an absolute file name.
1253 dnl Use the entirely-identical-but-quieter ginstall-info instead if present.
1254 dnl Sadly some people may have an old ginstall-info installed on
1255 dnl non-Debian systems, so we can't use this.
1256 dnl AC_PATH_PROGS(INSTALL_INFO, [ginstall-info install-info], :,
1257 dnl $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1259 AC_PATH_PROG(INSTALL_INFO, install-info, :,
1260 $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1261 dnl Don't use GZIP, which is used by gzip for additional parameters.
1262 AC_PATH_PROG(GZIP_PROG, gzip)
1264 test $with_compress_install != yes && test -n "$GZIP_PROG" && \
1265 GZIP_PROG=" # $GZIP_PROG # (disabled by configure --without-compress-install)"
1267 if test "$with_dumping" = "unexec" && test "$opsys" = "nacl"; then
1268 AC_MSG_ERROR([nacl is not compatible with --with-dumping=unexec])
1271 AC_CACHE_CHECK([for 'find' args to delete a file],
1272 [emacs_cv_find_delete],
1273 [if touch conftest.tmp && find conftest.tmp -delete 2>/dev/null &&
1274 test ! -f conftest.tmp
1275 then emacs_cv_find_delete="-delete"
1276 else emacs_cv_find_delete="-exec rm -f {} ';'"
1278 FIND_DELETE=$emacs_cv_find_delete
1279 AC_SUBST([FIND_DELETE])
1283 if test $with_unexec = yes && test $opsys = gnu-linux; then
1284 if test "${SETFATTR+set}" != set; then
1285 AC_CACHE_CHECK([for setfattr],
1286 [emacs_cv_prog_setfattr],
1288 if (setfattr -n user.pax.flags conftest.tmp) >/dev/null 2>&1; then
1289 emacs_cv_prog_setfattr=yes
1291 emacs_cv_prog_setfattr=no
1293 if test "$emacs_cv_prog_setfattr" = yes; then
1294 PAXCTL_notdumped='$(SETFATTR) -n user.pax.flags -v er'
1300 case $opsys,$PAXCTL_notdumped,$emacs_uname_r in
1301 gnu-linux,,* | netbsd,,[0-7].*)
1302 AC_PATH_PROG([PAXCTL], [paxctl], [],
1303 [$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR/usr/sbin])
1304 if test -n "$PAXCTL"; then
1305 if test "$opsys" = netbsd; then
1306 PAXCTL_dumped='$(PAXCTL) +a'
1307 PAXCTL_notdumped=$PAXCTL_dumped
1309 AC_MSG_CHECKING([whether binaries have a PT_PAX_FLAGS header])
1310 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1311 [if $PAXCTL -v conftest$EXEEXT >/dev/null 2>&1; then
1312 AC_MSG_RESULT([yes])
1317 if test -n "$PAXCTL"; then
1318 PAXCTL_dumped='$(PAXCTL) -zex'
1319 PAXCTL_notdumped='$(PAXCTL) -r'
1325 AC_SUBST([PAXCTL_dumped])
1326 AC_SUBST([PAXCTL_notdumped])
1327 AC_SUBST([SETFATTR])
1329 # Makeinfo on macOS is ancient, check whether there is a more recent
1330 # version installed by Homebrew.
1331 AC_CHECK_PROGS(BREW, [brew])
1332 if test -n "$BREW"; then
1333 AC_PATH_PROG([MAKEINFO], [makeinfo], [],
1334 [`$BREW --prefix texinfo 2>/dev/null`/bin$PATH_SEPARATOR$PATH])
1337 ## Require makeinfo >= 4.13 (last of the 4.x series) to build the manuals.
1338 : ${MAKEINFO:=makeinfo}
1339 case `($MAKEINFO --version) 2>/dev/null` in
1340 *' (GNU texinfo) '4.1[[3-9]]* | \
1341 *' (GNU texinfo) '[[5-9]]* | \
1342 *' (GNU texinfo) '[[1-9][0-9]]* ) ;;
1346 ## Makeinfo is unusual. For a released Emacs, the manuals are
1347 ## pre-built, and not deleted by the normal clean rules. makeinfo is
1348 ## therefore in the category of "special tools" not normally required, which
1349 ## configure does not have to check for (eg autoconf itself).
1350 ## In a repository checkout on the other hand, the manuals are not included.
1351 ## So makeinfo is a requirement to build from the repository, and configure
1352 ## should test for it as it does for any other build requirement.
1353 ## We use the presence of $srcdir/info/emacs to distinguish a release,
1354 ## with pre-built manuals, from a repository checkout.
1355 if test "$MAKEINFO" = "no"; then
1357 if test ! -e "$srcdir/info/emacs" && test ! -e "$srcdir/info/emacs.info"; then
1358 AC_MSG_ERROR( [You do not seem to have makeinfo >= 4.13, and your
1359 source tree does not seem to have pre-built manuals in the 'info' directory.
1360 Please install a suitable version of makeinfo.] )
1362 AC_MSG_WARN( [You do not seem to have makeinfo >= 4.13.
1363 You will not be able to rebuild the manuals if you delete them or change
1367 AC_SUBST([MAKEINFO])
1369 if test $opsys = mingw32; then
1370 DOCMISC_W32=efaq-w32
1374 AC_SUBST(DOCMISC_W32)
1376 dnl Add our options to ac_link now, after it is set up.
1378 if test x$GCC = xyes; then
1379 test "x$GCC_LINK_TEST_OPTIONS" != x && \
1380 ac_link="$ac_link $GCC_LINK_TEST_OPTIONS"
1382 test "x$NON_GCC_LINK_TEST_OPTIONS" != x && \
1383 ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
1386 dnl On some platforms using GNU ld, linking temacs needs -znocombreloc.
1387 dnl Although this has something to do with dumping, the details are unknown.
1388 dnl If the flag is used but not needed,
1389 dnl Emacs should still work (albeit a bit more slowly),
1390 dnl so use the flag everywhere that it is supported.
1391 dnl When testing whether the flag works, treat GCC specially
1392 dnl since it just gives a non-fatal 'unrecognized option'
1393 dnl if not built to support GNU ld.
1394 if test "$GCC" = yes; then
1395 LDFLAGS_NOCOMBRELOC="-Wl,-znocombreloc"
1397 LDFLAGS_NOCOMBRELOC="-znocombreloc"
1400 AC_CACHE_CHECK([for -znocombreloc], [emacs_cv_znocombreloc],
1401 [if test $with_unexec = no; then
1402 emacs_cv_znocombreloc='not needed'
1404 save_LDFLAGS=$LDFLAGS
1405 LDFLAGS="$LDFLAGS $LDFLAGS_NOCOMBRELOC"
1406 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1407 [emacs_cv_znocombreloc=yes], [emacs_cv_znocombreloc=no])
1408 LDFLAGS=$save_LDFLAGS
1411 case $emacs_cv_znocombreloc in
1413 LDFLAGS_NOCOMBRELOC= ;;
1417 AC_CACHE_CHECK([whether addresses are sanitized],
1418 [emacs_cv_sanitize_address],
1421 [[#ifndef __has_feature
1422 #define __has_feature(f) 0
1424 #if defined __SANITIZE_ADDRESS__ || __has_feature (address_sanitizer)
1426 error "Addresses are not sanitized.";
1429 [emacs_cv_sanitize_address=yes],
1430 [emacs_cv_sanitize_address=no])])
1432 if test $with_unexec = yes; then
1433 AC_DEFINE([HAVE_UNEXEC], 1, [Define if Emacs supports unexec.])
1434 if test "$emacs_cv_sanitize_address" = yes; then
1435 AC_MSG_WARN([[Addresses are sanitized; suggest --without-unexec]])
1441 test $with_unexec = yes &&
1443 # MSDOS uses unexcoff.o
1445 UNEXEC_OBJ=unexaix.o
1451 UNEXEC_OBJ=unexmacosx.o
1454 UNEXEC_OBJ=unexhp9k800.o
1457 UNEXEC_OBJ=unexw32.o
1460 # Use the Solaris dldump() function, called from unexsol.c, to dump
1461 # emacs, instead of the generic ELF dump code found in unexelf.c.
1462 # The resulting binary has a complete symbol table, and is better
1463 # for debugging and other observability tools (debuggers, pstack, etc).
1464 UNEXEC_OBJ=unexsol.o
1467 UNEXEC_OBJ=unexelf.o
1470 AC_SUBST(UNEXEC_OBJ)
1473 test "$with_unexec" = no || case "$opsys" in
1475 ## Let 'ld' find image libs and similar things in /usr/local/lib.
1476 ## The system compiler, GCC, has apparently been modified to not
1477 ## look there, contrary to what a stock GCC would do.
1478 ### It's not our place to do this. See bug#10313#17.
1479 ### LD_SWITCH_SYSTEM=-L/usr/local/lib
1484 ## cpp test was "ifdef __mips__", but presumably this is equivalent...
1485 case $host_cpu in mips*) LD_SWITCH_SYSTEM="-G 0";; esac
1489 ### It's not our place to do this. See bug#10313#17.
1490 ### LD_SWITCH_SYSTEM="-Wl,-rpath,/usr/pkg/lib -L/usr/pkg/lib -Wl,-rpath,/usr/local/lib -L/usr/local/lib"
1495 ## Han Boetes <han@boetes.org> says this is necessary,
1496 ## otherwise Emacs dumps core on elf systems.
1497 LD_SWITCH_SYSTEM="-Z"
1500 AC_SUBST(LD_SWITCH_SYSTEM)
1502 ac_link="$ac_link $LD_SWITCH_SYSTEM"
1504 ## This setting of LD_SWITCH_SYSTEM references LD_SWITCH_X_SITE_RPATH,
1505 ## which has not been defined yet. When this was handled with cpp,
1506 ## it was expanded to null when configure sourced the s/*.h file.
1507 ## Thus LD_SWITCH_SYSTEM had different values in configure and the Makefiles.
1508 ## FIXME it would be cleaner to put this in LD_SWITCH_SYSTEM_TEMACS
1509 ## (or somesuch), but because it is supposed to go at the _front_
1510 ## of LD_SWITCH_SYSTEM, we cannot do that in exactly the same way.
1511 ## Compare with the gnu-linux case below, which added to the end
1512 ## of LD_SWITCH_SYSTEM, and so can instead go at the front of
1513 ## LD_SWITCH_SYSTEM_TEMACS.
1516 LD_SWITCH_SYSTEM="\$(LD_SWITCH_X_SITE_RPATH) $LD_SWITCH_SYSTEM" ;;
1521 test $with_unexec = yes &&
1524 ## With ELF, make sure that all common symbols get allocated to in the
1525 ## data section. Otherwise, the dump of temacs may miss variables in
1526 ## the shared library that have been initialized. For example, with
1527 ## GNU libc, __malloc_initialized would normally be resolved to the
1528 ## shared library's .bss section, which is fatal.
1529 if test "x$GCC" = "xyes"; then
1530 C_SWITCH_MACHINE="-fno-common"
1532 AC_MSG_ERROR([Non-GCC compilers are not supported.])
1536 AC_SUBST(C_SWITCH_MACHINE)
1539 ## Some programs in src produce warnings saying certain subprograms
1540 ## are too complex and need a MAXMEM value greater than 2000 for
1541 ## additional optimization. --nils@exp-math.uni-essen.de
1542 test "$opsys" = "aix4.2" && test "x$GCC" != "xyes" && \
1543 C_SWITCH_SYSTEM="-ma -qmaxmem=4000"
1544 if test "$opsys" = "mingw32"; then
1545 case "$canonical" in
1546 x86_64-*-mingw*) C_SWITCH_SYSTEM="-mtune=generic" ;;
1547 *) C_SWITCH_SYSTEM="-mtune=pentium4" ;;
1550 ## gnu-linux might need -D_BSD_SOURCE on old libc5 systems.
1551 ## It is redundant in glibc2, since we define _GNU_SOURCE.
1552 AC_SUBST(C_SWITCH_SYSTEM)
1557 ## IBM's X11R5 uses -lIM and -liconv in AIX 3.2.2.
1558 aix4-2) LIBS_SYSTEM="-lrts -lIM -liconv" ;;
1560 freebsd|dragonfly) LIBS_SYSTEM="-lutil" ;;
1562 hpux*) LIBS_SYSTEM="-l:libdld.sl" ;;
1564 qnxnto) LIBS_SYSTEM="-lsocket" ;;
1566 solaris) LIBS_SYSTEM="-lsocket -lnsl" ;;
1568 ## Motif needs -lgen.
1569 unixware) LIBS_SYSTEM="-lsocket -lnsl -lelf -lgen" ;;
1572 AC_SUBST(LIBS_SYSTEM)
1574 ### Make sure subsequent tests use flags consistent with the build flags.
1576 if test x"${OVERRIDE_CPPFLAGS}" != x; then
1577 CPPFLAGS="${OVERRIDE_CPPFLAGS}"
1579 CPPFLAGS="$C_SWITCH_SYSTEM $C_SWITCH_MACHINE $CPPFLAGS"
1582 # Suppress obsolescent Autoconf test for size_t; Emacs assumes C99 or better.
1583 AC_DEFUN([AC_TYPE_SIZE_T])
1584 # Likewise for obsolescent test for uid_t, gid_t; Emacs assumes them.
1585 AC_DEFUN([AC_TYPE_UID_T])
1587 # sqrt and other floating-point functions such as fmod and frexp
1588 # are found in -lm on many systems.
1590 AC_SEARCH_LIBS([sqrt], [m])
1591 if test "X$LIBS" = "X$OLD_LIBS"; then
1594 LIB_MATH=$ac_cv_search_sqrt
1598 dnl Current possibilities handled by sed (aix4-2 -> aix,
1599 dnl gnu-linux -> gnu/linux, etc.):
1600 dnl gnu, gnu/linux, gnu/kfreebsd, aix, cygwin, darwin, hpux.
1601 dnl And special cases: berkeley-unix, usg-unix-v, ms-dos, windows-nt.
1602 SYSTEM_TYPE=`echo $opsys | sed -e 's/[[0-9]].*//' -e 's|-|/|'`
1609 ## Adding -lm confuses the dynamic linker, so omit it.
1612 freebsd | dragonfly )
1613 SYSTEM_TYPE=berkeley-unix
1615 gnu-linux | gnu-kfreebsd )
1617 hpux10-20 | hpux11 )
1621 SYSTEM_TYPE=windows-nt
1624 SYSTEM_TYPE=berkeley-unix
1627 solaris | unixware )
1628 SYSTEM_TYPE=usg-unix-v
1634 AC_DEFINE_UNQUOTED(SYSTEM_TYPE, "$SYSTEM_TYPE",
1635 [The type of system you are compiling for; sets 'system-type'.])
1636 AC_SUBST([SYSTEM_TYPE])
1639 pre_PKG_CONFIG_CFLAGS=$CFLAGS
1640 pre_PKG_CONFIG_LIBS=$LIBS
1642 PKG_PROG_PKG_CONFIG(0.9.0)
1644 dnl EMACS_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4)
1645 dnl acts like PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4,
1646 dnl HAVE_GSTUFF=yes, HAVE_GSTUFF=no) -- see pkg-config man page --
1647 dnl except that it postprocesses CFLAGS as needed for --enable-gcc-warnings.
1648 dnl EMACS_CHECK_MODULES accepts optional 3rd and 4th arguments that
1649 dnl can take the place of the default HAVE_GSTUFF=yes and HAVE_GSTUFF=no
1651 AC_DEFUN([EMACS_CHECK_MODULES],
1652 [PKG_CHECK_MODULES([$1], [$2],
1653 [$1_CFLAGS=`AS_ECHO(["$$1_CFLAGS"]) | sed -e "$edit_cflags"`
1654 m4_default([$3], [HAVE_$1=yes])],
1655 [m4_default([$4], [HAVE_$1=no])])])
1658 if test "${with_sound}" != "no"; then
1659 # Sound support for GNU/Linux, the free BSDs, MinGW, and Cygwin.
1660 AC_CHECK_HEADERS([machine/soundcard.h sys/soundcard.h soundcard.h mmsystem.h],
1661 have_sound_header=yes, [], [
1663 #define WIN32_LEAN_AND_MEAN
1664 #include <windows.h>
1667 test "${with_sound}" = "oss" && test "${have_sound_header}" != "yes" && \
1668 AC_MSG_ERROR([OSS sound support requested but not found.])
1670 if test "${with_sound}" = "bsd-ossaudio" || test "${with_sound}" = "yes"; then
1671 # Emulation library used on NetBSD.
1672 AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
1673 test "${with_sound}" = "bsd-ossaudio" && test -z "$LIBSOUND" && \
1674 AC_MSG_ERROR([bsd-ossaudio sound support requested but not found.])
1675 dnl FIXME? If we did find ossaudio, should we set with_sound=bsd-ossaudio?
1676 dnl Traditionally, we go on to check for alsa too. Does that make sense?
1680 if test "${with_sound}" = "alsa" || test "${with_sound}" = "yes"; then
1682 ALSA_MODULES="alsa >= $ALSA_REQUIRED"
1683 EMACS_CHECK_MODULES([ALSA], [$ALSA_MODULES])
1684 if test $HAVE_ALSA = yes; then
1685 LIBSOUND="$LIBSOUND $ALSA_LIBS"
1686 CFLAGS_SOUND="$CFLAGS_SOUND $ALSA_CFLAGS"
1687 AC_DEFINE(HAVE_ALSA, 1, [Define to 1 if ALSA is available.])
1688 elif test "${with_sound}" = "alsa"; then
1689 AC_MSG_ERROR([ALSA sound support requested but not found.])
1691 fi dnl with_sound = alsa|yes
1693 dnl Define HAVE_SOUND if we have sound support. We know it works and
1694 dnl compiles only on the specified platforms. For others, it
1695 dnl probably doesn't make sense to try.
1696 dnl FIXME So surely we should bypass this whole section if not using
1697 dnl one of these platforms?
1698 if test x$have_sound_header = xyes || test $HAVE_ALSA = yes; then
1700 dnl defined __FreeBSD__ || defined __NetBSD__ || defined __linux__
1701 dnl Adjust the --with-sound help text if you change this.
1702 gnu-linux|freebsd|netbsd|mingw32|cygwin)
1703 AC_DEFINE(HAVE_SOUND, 1, [Define to 1 if you have sound support.])
1709 AC_SUBST(CFLAGS_SOUND)
1712 dnl checks for header files
1713 AC_CHECK_HEADERS_ONCE(
1720 sys/utsname.h pwd.h utmp.h util.h
1721 sanitizer/lsan_interface.h)
1723 AC_CACHE_CHECK([for ADDR_NO_RANDOMIZE],
1724 [emacs_cv_personality_addr_no_randomize],
1726 [AC_LANG_PROGRAM([[#include <sys/personality.h>]],
1727 [[personality (personality (0xffffffff)
1728 | ADDR_NO_RANDOMIZE)]])],
1729 [emacs_cv_personality_addr_no_randomize=yes],
1730 [emacs_cv_personality_addr_no_randomize=no])])
1731 if test $emacs_cv_personality_addr_no_randomize = yes; then
1732 AC_DEFINE([HAVE_PERSONALITY_ADDR_NO_RANDOMIZE], [1],
1733 [Define to 1 if personality flag ADDR_NO_RANDOMIZE exists.])
1736 # Note that Solaris has sys/sysinfo.h which defines struct
1737 # sysinfo as well. To make sure that we're using GNU/Linux
1738 # sysinfo, we explicitly set one of its fields.
1739 if test "$ac_cv_header_sys_sysinfo_h" = yes; then
1740 AC_CACHE_CHECK([if Linux sysinfo may be used], [emacs_cv_linux_sysinfo],
1741 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1742 [[struct sysinfo si;
1745 emacs_cv_linux_sysinfo=yes, emacs_cv_linux_sysinfo=no)])
1747 if test $emacs_cv_linux_sysinfo = yes; then
1748 AC_DEFINE([HAVE_LINUX_SYSINFO], 1, [Define to 1 if you have Linux sysinfo function.])
1749 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1750 [[struct sysinfo si; return si.mem_unit]])],
1751 AC_DEFINE(LINUX_SYSINFO_UNIT, 1,
1752 [Define to 1 if Linux sysinfo sizes are in multiples of mem_unit bytes.]))
1756 dnl On Solaris 8 there's a compilation warning for term.h because
1757 dnl it doesn't define 'bool'.
1758 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[#include <term.h>]],[[]])],
1759 AC_DEFINE(HAVE_TERM_H, 1, [Define to 1 if you have the <term.h> header file.]))
1762 AC_CHECK_HEADERS_ONCE(sys/socket.h)
1763 AC_CHECK_HEADERS(net/if.h, , , [AC_INCLUDES_DEFAULT
1764 #if HAVE_SYS_SOCKET_H
1765 #include <sys/socket.h>
1767 AC_CHECK_HEADERS(ifaddrs.h, , , [AC_INCLUDES_DEFAULT
1768 #if HAVE_SYS_SOCKET_H
1769 #include <sys/socket.h>
1771 AC_CHECK_HEADERS(net/if_dl.h, , , [AC_INCLUDES_DEFAULT
1772 #if HAVE_SYS_SOCKET_H
1773 #include <sys/socket.h>
1776 dnl checks for structure members
1777 AC_CHECK_MEMBERS([struct ifreq.ifr_flags, struct ifreq.ifr_hwaddr,
1778 struct ifreq.ifr_netmask, struct ifreq.ifr_broadaddr,
1779 struct ifreq.ifr_addr,
1780 struct ifreq.ifr_addr.sa_len], , ,
1781 [AC_INCLUDES_DEFAULT
1782 #if HAVE_SYS_SOCKET_H
1783 #include <sys/socket.h>
1789 dnl Check for endianness.
1790 dnl AC_C_BIGENDIAN is done by gnulib.
1792 dnl check for Make feature
1795 AUTODEPEND_PARENTS='lib src'
1796 dnl check if we have GCC and autodepend is on.
1797 if test "$GCC" = yes && test "$ac_enable_autodepend" = yes; then
1798 AC_CACHE_CHECK([whether gcc understands -MMD -MF], [emacs_cv_autodepend],
1799 [SAVE_CFLAGS="$CFLAGS"
1800 CFLAGS="$CFLAGS -MMD -MF deps.d -MP"
1801 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1802 [emacs_cv_autodepend=yes], [emacs_cv_autodepend=no])
1803 CFLAGS="$SAVE_CFLAGS"
1804 test -f deps.d || emacs_cv_autodepend=no
1806 if test $emacs_cv_autodepend = yes; then
1810 AC_SUBST(AUTO_DEPEND)
1812 #### Choose a window system.
1814 ## We leave window_system equal to none if
1815 ## we end up building without one. Any new window system should
1816 ## set window_system to an appropriate value and add objects to
1817 ## window-system-specific substs.
1821 if test "$no_x" != yes; then
1825 LD_SWITCH_X_SITE_RPATH=
1826 if test "${x_libraries}" != NONE; then
1827 if test -n "${x_libraries}"; then
1828 LD_SWITCH_X_SITE=-L`AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -L/g'`
1829 LD_SWITCH_X_SITE_RPATH=-Wl,-rpath,`
1830 AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -Wl,-rpath,/g'
1833 x_default_search_path=""
1834 x_search_path=${x_libraries}
1835 if test -z "${x_search_path}"; then
1836 x_search_path=/usr/lib
1838 for x_library in `AS_ECHO(["$x_search_path:"]) | \
1839 sed -e "s/:/ /g" -e p -e "s:/lib[[^ /]]* :/share :g"`; do
1841 ${x_library}/X11/%L/%T/%N%C%S:\
1842 ${x_library}/X11/%l/%T/%N%C%S:\
1843 ${x_library}/X11/%T/%N%C%S:\
1844 ${x_library}/X11/%L/%T/%N%S:\
1845 ${x_library}/X11/%l/%T/%N%S:\
1846 ${x_library}/X11/%T/%N%S"
1847 if test x"${x_default_search_path}" = x; then
1848 x_default_search_path=${x_search_path}
1850 x_default_search_path="${x_search_path}:${x_default_search_path}"
1854 AC_SUBST(LD_SWITCH_X_SITE_RPATH)
1856 if test "${x_includes}" != NONE && test -n "${x_includes}"; then
1857 C_SWITCH_X_SITE=$isystem`AS_ECHO(["$x_includes"]) | sed -e "s/:/ $isystem/g"`
1860 if test x"${x_includes}" = x; then
1861 bitmapdir=/usr/include/X11/bitmaps
1863 # accumulate include directories that have X11 bitmap subdirectories
1865 for bmd in `AS_ECHO(["$x_includes"]) | sed -e 's/:/ /g'`; do
1866 if test -d "${bmd}/X11/bitmaps"; then
1867 bmd_acc="${bmd_acc}:${bmd}/X11/bitmaps"
1869 if test -d "${bmd}/bitmaps"; then
1870 bmd_acc="${bmd_acc}:${bmd}/bitmaps"
1873 bitmapdir=${bmd_acc#:}
1878 test "${with_ns}" = maybe && test "${opsys}" != darwin && with_ns=no
1880 NS_GNUSTEP_CONFIG=no
1883 tmp_CPPFLAGS="$CPPFLAGS"
1884 tmp_CFLAGS="$CFLAGS"
1885 CPPFLAGS="$CPPFLAGS -x objective-c"
1886 CFLAGS="$CFLAGS -x objective-c"
1889 if test "${with_ns}" != no; then
1890 # macfont.o requires macuvs.h which is absent after 'make extraclean',
1891 # so avoid NS_IMPL_COCOA if macuvs.h is absent.
1892 # Even a headless Emacs can build macuvs.h, so this should let you bootstrap.
1893 if test "${opsys}" = darwin && test -f "$srcdir/src/macuvs.h"; then
1894 lispdirrel=Contents/Resources/lisp
1896 ns_appdir=`pwd`/nextstep/Emacs.app
1897 ns_appbindir=${ns_appdir}/Contents/MacOS
1898 ns_appresdir=${ns_appdir}/Contents/Resources
1899 ns_appsrc=Cocoa/Emacs.base
1900 ns_fontfile=macfont.o
1901 elif flags=$( (gnustep-config --objc-flags) 2>/dev/null); then
1903 NS_GNUSTEP_CONFIG=yes
1904 GNU_OBJC_CFLAGS="$flags"
1905 LIBS_GNUSTEP=$(gnustep-config --gui-libs) || exit
1906 elif test -f $GNUSTEP_CONFIG_FILE; then
1908 dnl FIXME sourcing this several times in subshells seems inefficient.
1909 GNUSTEP_SYSTEM_HEADERS=$(
1910 . $GNUSTEP_CONFIG_FILE
1911 AS_ECHO(["$GNUSTEP_SYSTEM_HEADERS"])
1913 GNUSTEP_SYSTEM_LIBRARIES=$(
1914 . $GNUSTEP_CONFIG_FILE
1915 AS_ECHO(["$GNUSTEP_SYSTEM_LIBRARIES"])
1917 dnl I seemed to need these as well with GNUstep-startup 0.25.
1918 GNUSTEP_LOCAL_HEADERS=$(
1919 . $GNUSTEP_CONFIG_FILE
1920 AS_ECHO(["$GNUSTEP_LOCAL_HEADERS"])
1922 GNUSTEP_LOCAL_LIBRARIES=$(
1923 . $GNUSTEP_CONFIG_FILE
1924 AS_ECHO(["$GNUSTEP_LOCAL_LIBRARIES"])
1926 test "x${GNUSTEP_LOCAL_HEADERS}" != "x" && \
1927 GNUSTEP_LOCAL_HEADERS="-I${GNUSTEP_LOCAL_HEADERS}"
1928 test "x${GNUSTEP_LOCAL_LIBRARIES}" != "x" && \
1929 GNUSTEP_LOCAL_LIBRARIES="-L${GNUSTEP_LOCAL_LIBRARIES}"
1930 CPPFLAGS="$CPPFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1931 CFLAGS="$CFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1932 LDFLAGS="$LDFLAGS -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES}"
1933 LIBS_GNUSTEP="-lgnustep-gui -lgnustep-base -lobjc -lpthread"
1934 dnl GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS to 0 or 1.
1935 dnl If they had chosen to either define it or not, we could have
1936 dnl just used AC_CHECK_DECL here.
1937 AC_CACHE_CHECK(if GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS,
1938 emacs_cv_objc_exceptions,
1939 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <GNUstepBase/GSConfig.h>]],
1940 [[#if defined BASE_NATIVE_OBJC_EXCEPTIONS && BASE_NATIVE_OBJC_EXCEPTIONS > 0
1944 #endif]])], emacs_cv_objc_exceptions=yes, emacs_cv_objc_exceptions=no ) )
1945 if test $emacs_cv_objc_exceptions = yes; then
1946 dnl _NATIVE_OBJC_EXCEPTIONS is used by the GNUstep headers.
1947 AC_DEFINE(_NATIVE_OBJC_EXCEPTIONS, 1,
1948 [Define if GNUstep uses ObjC exceptions.])
1949 GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -fobjc-exceptions"
1952 if test $NS_IMPL_GNUSTEP = yes; then
1953 ns_appdir=`pwd`/nextstep/Emacs.app
1954 ns_appbindir=${ns_appdir}
1955 ns_appresdir=${ns_appdir}/Resources
1956 ns_appsrc=GNUstep/Emacs.base
1957 ns_fontfile=nsfont.o
1960 dnl This is only used while we test the NS headers, it gets reset below.
1961 CPPFLAGS="$CPPFLAGS $GNU_OBJC_CFLAGS"
1962 CFLAGS="$CFLAGS $GNU_OBJC_CFLAGS"
1964 AC_CHECK_HEADER([AppKit/AppKit.h], [HAVE_NS=yes],
1965 [AC_MSG_ERROR([The include files (AppKit/AppKit.h etc) that
1966 are required for a Nextstep build are missing or cannot be compiled.
1967 Either fix this, or re-configure with the option '--without-ns'.])])
1970 if test "${NS_IMPL_COCOA}" = "yes"; then
1971 AC_MSG_CHECKING([for Mac OS X 10.6 or newer])
1972 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <AppKit/AppKit.h>],
1974 #ifdef MAC_OS_X_VERSION_MAX_ALLOWED
1975 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
1978 error "Mac OS X 10.6 or newer required";
1982 ns_osx_have_106=yes,
1984 AC_MSG_RESULT([$ns_osx_have_106])
1986 if test $ns_osx_have_106 = no; then
1987 AC_MSG_ERROR([Mac OS X 10.6 or newer is required]);
1991 if test "${with_native_image_api}" = yes; then
1992 AC_DEFINE(HAVE_NATIVE_IMAGE_API, 1, [Define to use native OS APIs for images.])
1993 NATIVE_IMAGE_API="yes (ns)"
1997 AC_SUBST(LIBS_GNUSTEP)
1999 INSTALL_ARCH_INDEP_EXTRA=install-etc
2000 ns_self_contained=no
2003 if test "${HAVE_NS}" = yes; then
2004 if test "$with_toolkit_scroll_bars" = "no"; then
2005 AC_MSG_WARN([Non-toolkit scroll bars are not implemented for Nextstep.])
2008 window_system=nextstep
2009 # set up packaging dirs
2010 if test "${EN_NS_SELF_CONTAINED}" = yes; then
2011 ns_self_contained=yes
2012 prefix=${ns_appresdir}
2013 exec_prefix=${ns_appbindir}
2014 dnl This one isn't really used, only archlibdir is.
2015 libexecdir="\${ns_appbindir}/libexec"
2016 archlibdir="\${ns_appbindir}/libexec"
2017 etcdocdir="\${ns_appresdir}/etc"
2018 etcdir="\${ns_appresdir}/etc"
2019 dnl FIXME maybe set datarootdir instead.
2020 dnl That would also get applications, icons, man.
2021 infodir="\${ns_appresdir}/info"
2022 mandir="\${ns_appresdir}/man"
2023 lispdir="\${ns_appresdir}/lisp"
2024 test "$locallisppathset" = no && locallisppath=""
2025 INSTALL_ARCH_INDEP_EXTRA=
2028 NS_OBJC_OBJ="nsterm.o nsfns.o nsmenu.o nsselect.o nsimage.o $ns_fontfile"
2030 CFLAGS="$tmp_CFLAGS"
2031 CPPFLAGS="$tmp_CPPFLAGS"
2032 AC_SUBST(INSTALL_ARCH_INDEP_EXTRA)
2033 AC_SUBST(ns_self_contained)
2035 AC_SUBST(NS_OBJC_OBJ)
2037 if test "${HAVE_NS}" = yes; then
2039 [if the Objective C compiler supports instancetype],
2040 [emacs_cv_objc_instancetype],
2041 [AC_LANG_PUSH([Objective C])
2043 [AC_LANG_SOURCE([[@interface Test
2044 + (instancetype)test;
2046 emacs_cv_objc_instancetype=yes,
2047 emacs_cv_objc_instancetype=no)
2048 AC_LANG_POP([Objective C])])
2050 if test x$emacs_cv_objc_instancetype = xyes ; then
2051 AC_DEFINE(NATIVE_OBJC_INSTANCETYPE, 1,
2052 [Define if ObjC compiler supports instancetype natively.])
2056 [if the Objective C compiler defaults to C99],
2057 [emacs_cv_objc_c99],
2058 [AC_LANG_PUSH([Objective C])
2060 [AC_LANG_PROGRAM([], [[for (int i = 0;;);]])],
2061 emacs_cv_objc_c99=yes,
2062 emacs_cv_objc_c99=no)
2063 AC_LANG_POP([Objective C])])
2065 if test x$emacs_cv_objc_c99 = xno ; then
2066 GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -std=c99"
2078 if test "${with_w32}" != no; then
2081 AC_CHECK_HEADER([windows.h], [HAVE_W32=yes],
2082 [AC_MSG_ERROR(['--with-w32' was specified, but windows.h
2083 cannot be found.])])
2086 ## Using --with-w32 with MinGW is a no-op, but we allow it.
2089 AC_MSG_ERROR([Using w32 with an autotools build is only supported for Cygwin and MinGW32.])
2094 if test "${opsys}" = "mingw32"; then
2095 AC_CACHE_CHECK([whether Windows API headers are recent enough], [emacs_cv_w32api],
2096 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2097 #include <windows.h>
2098 #include <usp10.h>]],
2099 [[PIMAGE_NT_HEADERS pHeader;
2100 PIMAGE_SECTION_HEADER pSection = IMAGE_FIRST_SECTION(pHeader)]])],
2101 [emacs_cv_w32api=yes], [emacs_cv_w32api=no])])
2102 if test "${emacs_cv_w32api}" = "no"; then
2103 AC_MSG_ERROR([the Windows API headers are too old to support this build.])
2105 HAVE_W32=${emacs_cv_w32api}
2115 if test "${HAVE_W32}" = "yes"; then
2116 AC_DEFINE(HAVE_NTGUI, 1, [Define to use native MS Windows GUI.])
2117 if test "$with_toolkit_scroll_bars" = "no"; then
2118 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for w32 build.])
2120 AC_CHECK_TOOL(WINDRES, [windres],
2121 [AC_MSG_ERROR([No resource compiler found.])])
2122 W32_OBJ="w32fns.o w32menu.o w32reg.o w32font.o w32term.o"
2123 W32_OBJ="$W32_OBJ w32xfns.o w32select.o w32uniscribe.o w32cygwinx.o"
2124 EMACSRES="emacs.res"
2125 case "$canonical" in
2126 x86_64-*-*) EMACS_MANIFEST="emacs-x64.manifest" ;;
2127 *) EMACS_MANIFEST="emacs-x86.manifest" ;;
2129 dnl Construct something of the form "24,4,0,0" with 4 components.
2130 comma_version=`echo "${PACKAGE_VERSION}.0.0" | sed -e 's/\./,/g' -e 's/^\([[^,]]*,[[^,]]*,[[^,]]*,[[^,]]*\).*/\1/'`
2132 comma_space_version=`echo "$comma_version" | sed 's/,/, /g'`
2133 AC_SUBST(comma_version)
2134 AC_SUBST(comma_space_version)
2135 AC_CONFIG_FILES([nt/emacs.rc nt/emacsclient.rc])
2136 if test "${opsys}" = "cygwin"; then
2137 W32_LIBS="$W32_LIBS -lkernel32 -luser32 -lusp10 -lgdi32"
2138 W32_LIBS="$W32_LIBS -lole32 -lcomdlg32 -lcomctl32 -lwinspool"
2139 # Tell the linker that emacs.res is an object (which we compile from
2140 # the rc file), not a linker script.
2141 W32_RES_LINK="-Wl,emacs.res"
2143 W32_OBJ="$W32_OBJ w32.o w32console.o w32heap.o w32inevt.o w32proc.o"
2144 dnl FIXME: This should probably be supported for Cygwin/w32 as
2145 dnl well, but the Cygwin build needs to link against -lgdiplus
2146 if test "${with_native_image_api}" = yes; then
2147 AC_DEFINE(HAVE_NATIVE_IMAGE_API, 1, [Define to use native OS APIs for images.])
2148 NATIVE_IMAGE_API="yes (w32)"
2149 W32_OBJ="$W32_OBJ w32image.o"
2151 W32_LIBS="$W32_LIBS -lwinmm -lusp10 -lgdi32 -lcomdlg32"
2152 W32_LIBS="$W32_LIBS -lmpr -lwinspool -lole32 -lcomctl32"
2153 W32_RES_LINK="\$(EMACSRES)"
2154 CLIENTRES="emacsclient.res"
2155 CLIENTW="emacsclientw\$(EXEEXT)"
2156 FIRSTFILE_OBJ=firstfile.o
2159 LIBS_ECLIENT="-lcomctl32"
2160 LIB_WSOCK32="-lwsock32"
2161 NTLIB="ntlib.$ac_objext"
2162 XARGS_LIMIT="-s 10000"
2166 if test "${HAVE_W32}" = "no" && test "${opsys}" = "cygwin"; then
2167 W32_LIBS="-lkernel32"
2168 W32_OBJ="w32cygwinx.o"
2174 AC_SUBST(EMACS_MANIFEST)
2177 AC_SUBST(W32_RES_LINK)
2178 AC_SUBST(FIRSTFILE_OBJ)
2181 AC_SUBST(LIBS_ECLIENT)
2182 AC_SUBST(LIB_WSOCK32)
2184 AC_SUBST(XARGS_LIMIT)
2186 if test "${HAVE_W32}" = "yes"; then
2191 ## $window_system is now set to the window system we will
2199 case "${window_system}" in
2204 case "${with_x_toolkit}" in
2205 athena | lucid ) USE_X_TOOLKIT=LUCID ;;
2206 motif ) USE_X_TOOLKIT=MOTIF ;;
2208 term_header=gtkutil.h
2209 dnl Don't set this for GTK. A lot of tests below assumes Xt when
2210 dnl USE_X_TOOLKIT is set.
2211 USE_X_TOOLKIT=none ;;
2212 gtk2 ) with_gtk2=yes
2213 term_header=gtkutil.h
2214 USE_X_TOOLKIT=none ;;
2215 gtk3 ) with_gtk3=yes
2216 term_header=gtkutil.h
2217 USE_X_TOOLKIT=none ;;
2218 no ) USE_X_TOOLKIT=none ;;
2219 dnl If user did not say whether to use a toolkit, make this decision later:
2220 dnl use the toolkit if we have gtk, or X11R5 or newer.
2221 * ) USE_X_TOOLKIT=maybe ;;
2225 term_header=nsterm.h
2228 term_header=w32term.h
2232 if test "$window_system" = none && test "X$with_x" != "Xno"; then
2233 AC_CHECK_PROG(HAVE_XSERVER, X, true, false)
2234 if test "$HAVE_XSERVER" = true ||
2235 test -n "$DISPLAY" ||
2237 for emacs_libX11 in /usr/lib/libX11.*; do break; done
2238 test "$emacs_libX11" != '/usr/lib/libX11.*'
2241 AC_MSG_ERROR([You seem to be running X, but no X development libraries
2242 were found. You should install the relevant development files for X
2243 and for the toolkit you want, such as Gtk+. Also make
2244 sure you have development files for image handling, i.e.
2245 tiff, gif, jpeg, png and xpm.
2246 If you are sure you want Emacs compiled without X window support, pass
2252 # Does the opsystem file prohibit the use of the GNU malloc?
2253 # Assume not, until told otherwise.
2257 [whether malloc is Doug Lea style],
2258 [emacs_cv_var_doug_lea_malloc],
2259 [emacs_cv_var_doug_lea_malloc=no
2260 dnl Hooks do not work with address sanitization.
2261 if test "$emacs_cv_sanitize_address" != yes; then
2264 [[#include <malloc.h>
2265 static void hook (void) {}]],
2266 [[malloc_set_state (malloc_get_state ());
2267 __after_morecore_hook = hook;
2268 __malloc_initialize_hook = hook;]])],
2269 [emacs_cv_var_doug_lea_malloc=yes])
2271 doug_lea_malloc=$emacs_cv_var_doug_lea_malloc
2276 test $with_unexec = yes &&
2278 ## darwin ld insists on the use of malloc routines in the System framework.
2279 darwin | mingw32 | nacl | solaris) ;;
2280 cygwin | qnxnto | freebsd)
2283 *) test "$ac_cv_func_sbrk" = yes && system_malloc=$emacs_cv_sanitize_address;;
2286 if test "${system_malloc}" != yes && test "${doug_lea_malloc}" != yes \
2287 && test "${UNEXEC_OBJ}" = unexelf.o; then
2293 if test "${system_malloc}" = "yes"; then
2294 AC_DEFINE([SYSTEM_MALLOC], 1,
2295 [Define to 1 to use the system memory allocator, even if it is not
2299 (The GNU allocators don't work with this system configuration.)"
2301 elif test "$hybrid_malloc" = yes; then
2302 AC_DEFINE(HYBRID_MALLOC, 1,
2303 [Define to use gmalloc before dumping and the system malloc after.])
2306 GNU_MALLOC_reason=" (only before dumping)"
2307 GMALLOC_OBJ=gmalloc.o
2310 test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
2311 VMLIMIT_OBJ=vm-limit.o
2313 AC_CHECK_HEADERS([sys/vlimit.h])
2314 AC_CACHE_CHECK([for data_start], [emacs_cv_data_start],
2317 [[extern char data_start[]; char ch;]],
2318 [[return data_start < &ch;]])],
2319 [emacs_cv_data_start=yes],
2320 [emacs_cv_data_start=no])])
2321 if test $emacs_cv_data_start = yes; then
2322 AC_DEFINE([HAVE_DATA_START], 1,
2323 [Define to 1 if data_start is the address of the start
2324 of the main data segment.])
2327 AC_SUBST([HYBRID_MALLOC])
2328 AC_SUBST(GMALLOC_OBJ)
2329 AC_SUBST(VMLIMIT_OBJ)
2331 if test "$doug_lea_malloc" = "yes" && test "$hybrid_malloc" != yes; then
2332 if test "$GNU_MALLOC" = yes ; then
2334 (Using Doug Lea's new malloc from the GNU C Library.)"
2336 AC_DEFINE(DOUG_LEA_MALLOC, 1,
2337 [Define to 1 if the system memory allocator is Doug Lea style,
2338 with malloc hooks and malloc_set_state.])
2340 ## Use mmap directly for allocating larger buffers.
2341 ## FIXME this comes from src/s/{gnu,gnu-linux}.h:
2342 ## #ifdef DOUG_LEA_MALLOC; #undef REL_ALLOC; #endif
2343 ## Does the AC_FUNC_MMAP test below make this check unnecessary?
2345 mingw32|gnu*) REL_ALLOC=no ;;
2349 if test x"${REL_ALLOC}" = x; then
2350 REL_ALLOC=${GNU_MALLOC}
2353 use_mmap_for_buffers=no
2355 mingw32) use_mmap_for_buffers=yes ;;
2359 if test $use_mmap_for_buffers = yes; then
2360 AC_DEFINE(USE_MMAP_FOR_BUFFERS, 1, [Define to use mmap to allocate buffer text.])
2364 LIBS="$LIBS_SYSTEM $LIBS"
2366 dnl FIXME replace main with a function we actually want from this library.
2367 AC_CHECK_LIB(Xbsd, main, LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -lXbsd")
2369 dnl Check for the POSIX thread library.
2371 AC_CHECK_HEADERS_ONCE(pthread.h)
2372 if test "$ac_cv_header_pthread_h" && test "$opsys" != "mingw32"; then
2373 AC_CACHE_CHECK([for pthread library],
2374 [emacs_cv_pthread_lib],
2375 [emacs_cv_pthread_lib=no
2377 for emacs_pthread_lib in 'none needed' -lpthread; do
2378 case $emacs_pthread_lib in
2379 -*) LIBS="$OLD_LIBS $emacs_pthread_lib";;
2383 [[#include <pthread.h>
2385 sigset_t old_mask, new_mask;
2386 void noop (void) {}]],
2387 [[pthread_t th = pthread_self ();
2389 status += pthread_create (&th, 0, 0, 0);
2390 status += pthread_sigmask (SIG_BLOCK, &new_mask, &old_mask);
2391 status += pthread_kill (th, 0);
2392 #if ! (defined SYSTEM_MALLOC || defined HYBRID_MALLOC \
2393 || defined DOUG_LEA_MALLOC)
2394 /* Test for pthread_atfork only if gmalloc uses it,
2395 as older-style hosts like MirBSD 10 lack it. */
2396 status += pthread_atfork (noop, noop, noop);
2399 [emacs_cv_pthread_lib=$emacs_pthread_lib])
2401 if test "$emacs_cv_pthread_lib" != no; then
2405 if test "$emacs_cv_pthread_lib" != no; then
2406 AC_DEFINE([HAVE_PTHREAD], 1, [Define to 1 if you have POSIX threads.])
2407 case $emacs_cv_pthread_lib in
2408 -*) LIB_PTHREAD=$emacs_cv_pthread_lib;;
2410 ac_cv_func_pthread_sigmask=yes
2411 # Some systems optimize for single-threaded programs by default, and
2412 # need special flags to disable these optimizations. For example, the
2413 # definition of 'errno' in <errno.h>.
2416 AC_DEFINE([_REENTRANT], 1,
2417 [Define to 1 if your system requires this in multithreaded code.]);;
2419 AC_DEFINE([_THREAD_SAFE], 1,
2420 [Define to 1 if your system requires this in multithreaded code.]);;
2424 AC_SUBST([LIB_PTHREAD])
2426 AC_MSG_CHECKING([for thread support])
2428 if test "$with_threads" = yes; then
2429 if test "$emacs_cv_pthread_lib" != no; then
2430 AC_DEFINE(THREADS_ENABLED, 1,
2431 [Define to 1 if you want elisp thread support.])
2433 elif test "${opsys}" = "mingw32"; then
2434 dnl MinGW can do native Windows threads even without pthreads
2435 AC_DEFINE(THREADS_ENABLED, 1,
2436 [Define to 1 if you want elisp thread support.])
2440 AC_MSG_RESULT([$threads_enabled])
2442 dnl Check for need for bigtoc support on IBM AIX
2446 AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
2448 yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
2449 *) gdb_cv_bigtoc=-bbigtoc ;;
2452 LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
2453 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[int i;]])], [], [gdb_cv_bigtoc=])
2458 # Change CFLAGS, CPPFLAGS, and LIBS temporarily so that C_SWITCH_X_SITE
2459 # is for the tests that follow. We set them back later on.
2461 REAL_CFLAGS="$CFLAGS"
2462 REAL_CPPFLAGS="$CPPFLAGS"
2465 if test "${HAVE_X11}" = "yes"; then
2466 DEFS="$C_SWITCH_X_SITE $DEFS"
2467 LDFLAGS="$LDFLAGS $LD_SWITCH_X_SITE"
2469 CFLAGS="$C_SWITCH_X_SITE $CFLAGS"
2470 CPPFLAGS="$C_SWITCH_X_SITE $CPPFLAGS"
2472 # On Solaris, arrange for LD_RUN_PATH to point to the X libraries for tests.
2473 # This is handled by LD_SWITCH_X_SITE_RPATH during the real build,
2474 # but it's more convenient here to set LD_RUN_PATH since this
2475 # also works on hosts that don't understand LD_SWITCH_X_SITE_RPATH.
2476 if test "${x_libraries}" != NONE && test -n "${x_libraries}"; then
2477 LD_RUN_PATH=$x_libraries${LD_RUN_PATH+:}$LD_RUN_PATH
2481 if test "${opsys}" = "gnu-linux"; then
2482 AC_CACHE_CHECK([whether X on GNU/Linux needs -b to link], [emacs_cv_b_link],
2483 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2484 [[XOpenDisplay ("foo");]])],
2485 [xgnu_linux_first_failure=no],
2486 [xgnu_linux_first_failure=yes])
2487 if test "${xgnu_linux_first_failure}" = "yes"; then
2488 OLD_CPPFLAGS="$CPPFLAGS"
2490 CPPFLAGS="$CPPFLAGS -b i486-linuxaout"
2491 LIBS="$LIBS -b i486-linuxaout"
2492 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2493 [[XOpenDisplay ("foo");]])],
2494 [xgnu_linux_second_failure=no],
2495 [xgnu_linux_second_failure=yes])
2496 if test "${xgnu_linux_second_failure}" = "yes"; then
2497 # If we get the same failure with -b, there is no use adding -b.
2498 # So leave it out. This plays safe.
2503 CPPFLAGS=$OLD_CPPFLAGS
2508 if test "x$emacs_cv_b_link" = xyes ; then
2509 LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -b i486-linuxaout"
2510 C_SWITCH_X_SITE="$C_SWITCH_X_SITE -b i486-linuxaout"
2514 # Reportedly, some broken Solaris systems have XKBlib.h but are missing
2515 # header files included from there.
2516 AC_CACHE_CHECK([for Xkb], [emacs_cv_xkb],
2517 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>
2518 #include <X11/XKBlib.h>]],
2519 [[XkbDescPtr kb = XkbGetKeyboard (0, XkbAllComponentsMask, XkbUseCoreKbd);]])],
2520 emacs_cv_xkb=yes, emacs_cv_xkb=no)])
2521 if test $emacs_cv_xkb = yes; then
2522 AC_DEFINE(HAVE_XKB, 1, [Define to 1 if you have the Xkb extension.])
2525 AC_CHECK_FUNCS(XrmSetDatabase XScreenResourceString \
2526 XScreenNumberOfScreen)
2529 if test "${window_system}" = "x11"; then
2530 AC_MSG_CHECKING(X11 version 6)
2531 AC_CACHE_VAL(emacs_cv_x11_version_6,
2532 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]],
2533 [[#if XlibSpecificationRelease < 6
2536 ]])], emacs_cv_x11_version_6=yes, emacs_cv_x11_version_6=no)])
2537 if test $emacs_cv_x11_version_6 = yes; then
2538 AC_MSG_RESULT(6 or newer)
2539 AC_DEFINE(HAVE_X11R6, 1,
2540 [Define to 1 if you have the X11R6 or newer version of Xlib.])
2541 AC_DEFINE(HAVE_X_I18N, 1, [Define if you have usable i18n support.])
2542 ## inoue@ainet.or.jp says Solaris has a bug related to X11R6-style
2546 *) AC_DEFINE(HAVE_X11R6_XIM, 1,
2547 [Define if you have usable X11R6-style XIM support.])
2551 AC_MSG_RESULT(before 6)
2556 ### Use -lrsvg-2 if available, unless '--with-rsvg=no' is specified.
2558 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${opsys}" = "mingw32"; then
2559 if test "${with_rsvg}" != "no"; then
2560 RSVG_REQUIRED=2.14.0
2561 RSVG_MODULE="librsvg-2.0 >= $RSVG_REQUIRED"
2563 EMACS_CHECK_MODULES([RSVG], [$RSVG_MODULE])
2564 AC_SUBST(RSVG_CFLAGS)
2567 if test $HAVE_RSVG = yes; then
2568 AC_DEFINE(HAVE_RSVG, 1, [Define to 1 if using librsvg.])
2569 CFLAGS="$CFLAGS $RSVG_CFLAGS"
2570 # Windows loads librsvg dynamically
2571 if test "${opsys}" = "mingw32"; then
2579 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${HAVE_W32}" = "yes"; then
2580 if test "${with_imagemagick}" != "no"; then
2581 if test -n "$BREW"; then
2582 # Homebrew doesn't link ImageMagick 6 by default, so make sure
2583 # pkgconfig can find it.
2584 export PKG_CONFIG_PATH="$PKG_CONFIG_PATH$PATH_SEPARATOR`$BREW --prefix imagemagick@6 2>/dev/null`/lib/pkgconfig"
2587 EMACS_CHECK_MODULES([IMAGEMAGICK], [MagickWand >= 7])
2588 if test $HAVE_IMAGEMAGICK = yes; then
2589 AC_DEFINE([HAVE_IMAGEMAGICK7], 1, [Define to 1 if using ImageMagick7.])
2591 ## 6.3.5 is the earliest version known to work; see Bug#17339.
2592 ## 6.8.2 makes Emacs crash; see Bug#13867.
2593 EMACS_CHECK_MODULES([IMAGEMAGICK], [Wand >= 6.3.5 Wand != 6.8.2])
2596 if test $HAVE_IMAGEMAGICK = yes; then
2599 CFLAGS="$CFLAGS $IMAGEMAGICK_CFLAGS"
2600 LIBS="$IMAGEMAGICK_LIBS $LIBS"
2601 AC_CHECK_FUNCS([MagickRelinquishMemory MagickExportImagePixels \
2602 MagickMergeImageLayers MagickAutoOrientImage])
2605 # Check that ImageMagick links. It does not link on Fedora 25
2606 # with './configure CC=clang', as pkg-config outputs flags like
2607 # -lomp that work for GCC but not Clang.
2608 if test "$ac_cv_func_MagickRelinquishMemory" != yes; then
2612 if test $HAVE_IMAGEMAGICK = yes; then
2613 AC_DEFINE([HAVE_IMAGEMAGICK], 1, [Define to 1 if using ImageMagick.])
2615 if test "${with_imagemagick}" != "no"; then
2616 AC_MSG_ERROR([ImageMagick wanted, but it does not compile. Maybe some library files are missing?]);
2621 AC_SUBST([IMAGEMAGICK_CFLAGS])
2622 AC_SUBST([IMAGEMAGICK_LIBS])
2626 AC_CHECK_LIB(anl, getaddrinfo_a, HAVE_GETADDRINFO_A=yes)
2627 if test "${HAVE_GETADDRINFO_A}" = "yes"; then
2628 AC_DEFINE(HAVE_GETADDRINFO_A, 1,
2629 [Define to 1 if you have getaddrinfo_a for asynchronous DNS resolution.])
2630 GETADDRINFO_A_LIBS="-lanl"
2631 AC_SUBST(GETADDRINFO_A_LIBS)
2636 gtk_term_header=$term_header
2639 if test "${opsys}" != "mingw32"; then
2640 if test "${with_gtk3}" = "yes" || test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
2641 GLIB_REQUIRED=2.37.5
2643 GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2645 dnl Checks for libraries.
2646 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2647 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2648 if test "$pkg_check_gtk" = "no" && test "$with_gtk3" = "yes"; then
2649 AC_MSG_ERROR($GTK_PKG_ERRORS)
2651 if test "$pkg_check_gtk" = "yes"; then
2652 AC_DEFINE(HAVE_GTK3, 1, [Define to 1 if using GTK 3 or later.])
2653 GTK_OBJ=emacsgtkfixed.o
2654 gtk_term_header=gtkutil.h
2655 USE_GTK_TOOLKIT="GTK3"
2656 if test "x$ac_enable_gtk_deprecation_warnings" = x; then
2657 AC_DEFINE([GDK_DISABLE_DEPRECATION_WARNINGS], [1],
2658 [Define to 1 to disable GTK+/GDK deprecation warnings.])
2659 AC_DEFINE([GLIB_DISABLE_DEPRECATION_WARNINGS], [1],
2660 [Define to 1 to disable Glib deprecation warnings.])
2664 gtk3_pkg_errors="$GTK_PKG_ERRORS "
2668 if test "${with_gtk2}" = "yes" || test "$check_gtk2" = "yes"; then
2671 GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2673 dnl Checks for libraries.
2674 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2675 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2676 if test "$pkg_check_gtk" = "no" &&
2677 { test "$with_gtk" = yes || test "$with_gtk2" = "yes"; }
2679 AC_MSG_ERROR($gtk3_pkg_errors$GTK_PKG_ERRORS)
2681 test "$pkg_check_gtk" = "yes" && USE_GTK_TOOLKIT="GTK2"
2688 if test x"$pkg_check_gtk" = xyes; then
2691 CFLAGS="$CFLAGS $GTK_CFLAGS"
2692 LIBS="$GTK_LIBS $LIBS"
2693 dnl Try to compile a simple GTK program.
2694 AC_CACHE_CHECK([whether GTK compiles], [emacs_cv_gtk_compiles],
2697 [[/* Check the Gtk and Glib APIs. */
2698 #include <gtk/gtk.h>
2699 #include <glib-object.h>
2701 callback (GObject *go, GParamSpec *spec, gpointer user_data)
2705 GtkSettings *gs = 0;
2706 /* Use G_CALLBACK to make sure function pointers can be cast to void *;
2707 strict C prohibits this. Use gtk_main_iteration to test that the
2708 libraries are there. */
2709 if (g_signal_handler_find (G_OBJECT (gs), G_SIGNAL_MATCH_FUNC,
2710 0, 0, 0, G_CALLBACK (callback), 0))
2711 gtk_main_iteration ();
2713 [emacs_cv_gtk_compiles=yes], [emacs_cv_gtk_compiles=no])])
2714 if test "${emacs_cv_gtk_compiles}" != "yes"; then
2716 if test "$USE_X_TOOLKIT" != "maybe"; then
2717 AC_MSG_ERROR([Gtk+ wanted, but it does not compile, see config.log. Maybe some x11-devel files missing?]);
2720 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $GTK_CFLAGS"
2722 AC_DEFINE(USE_GTK, 1, [Define to 1 if using GTK.])
2723 GTK_OBJ="gtkutil.o $GTK_OBJ"
2724 term_header=$gtk_term_header
2726 AC_MSG_WARN([[Your version of Gtk+ will have problems with
2727 closing open displays. This is no problem if you just use
2728 one display, but if you use more than one and close one of them
2730 See https://gitlab.gnome.org/GNOME/gtk/issues/221]])
2737 if test "${HAVE_GTK}" = "yes"; then
2739 dnl GTK scrollbars resemble toolkit scrollbars a lot, so to avoid
2740 dnl a lot if #ifdef:s, say we have toolkit scrollbars.
2741 if test "$with_toolkit_scroll_bars" != no; then
2742 with_toolkit_scroll_bars=yes
2745 term_header=gtkutil.h
2747 if test "${USE_GTK_TOOLKIT}" = GTK2; then
2749 dnl Check if we have the old file selection dialog declared and
2750 dnl in the link library. In 2.x it may be in the library,
2751 dnl but not declared if deprecated featured has been selected out.
2752 dnl AC_CHECK_DECL checks for a macro, so check for GTK_TYPE_FILE_SELECTION.
2753 HAVE_GTK_FILE_SELECTION=no
2754 AC_CHECK_DECL(GTK_TYPE_FILE_SELECTION, HAVE_GTK_FILE_SELECTION=yes,
2755 HAVE_GTK_FILE_SELECTION=no, [AC_INCLUDES_DEFAULT
2756 #include <gtk/gtk.h>])
2757 if test "$HAVE_GTK_FILE_SELECTION" = yes; then
2758 AC_CHECK_FUNCS(gtk_file_selection_new)
2761 dnl This procedure causes a bug on certain Ubuntu GTK+2 builds
2762 AC_CHECK_FUNCS(gtk_window_set_has_resize_grip)
2767 dnl Enable xwidgets if GTK3 and WebKitGTK+ are available.
2768 dnl Enable xwidgets if macOS Cocoa and WebKit framework are available.
2771 if test "$with_xwidgets" != "no"; then
2772 if test "$USE_GTK_TOOLKIT" = "GTK3" && test "$window_system" != "none"; then
2773 WEBKIT_REQUIRED=2.12
2774 WEBKIT_MODULES="webkit2gtk-4.0 >= $WEBKIT_REQUIRED"
2775 EMACS_CHECK_MODULES([WEBKIT], [$WEBKIT_MODULES])
2776 HAVE_XWIDGETS=$HAVE_WEBKIT
2777 XWIDGETS_OBJ="xwidget.o"
2778 elif test "${NS_IMPL_COCOA}" = "yes"; then
2779 dnl FIXME: Check framework WebKit2
2780 dnl WEBKIT_REQUIRED=M.m.p
2781 WEBKIT_LIBS="-Wl,-framework -Wl,WebKit"
2782 WEBKIT_CFLAGS="-I/System/Library/Frameworks/WebKit.framework/Headers"
2784 HAVE_XWIDGETS=$HAVE_WEBKIT
2785 XWIDGETS_OBJ="xwidget.o"
2786 NS_OBJC_OBJ="$NS_OBJC_OBJ nsxwidget.o"
2787 dnl Update NS_OBJC_OBJ with added nsxwidget.o
2788 AC_SUBST(NS_OBJC_OBJ)
2790 AC_MSG_ERROR([xwidgets requested, it requires GTK3 as X window toolkit or macOS Cocoa as window system.])
2793 test $HAVE_XWIDGETS = yes ||
2794 AC_MSG_ERROR([xwidgets requested but WebKitGTK+ or WebKit framework not found.])
2796 AC_DEFINE([HAVE_XWIDGETS], 1, [Define to 1 if you have xwidgets support.])
2798 AC_SUBST(XWIDGETS_OBJ)
2803 dnl D-Bus has been tested under GNU/Linux only. Must be adapted for
2804 dnl other platforms.
2807 if test "${with_dbus}" = "yes"; then
2808 EMACS_CHECK_MODULES([DBUS], [dbus-1 >= 1.0])
2809 if test "$HAVE_DBUS" = yes; then
2810 AC_DEFINE(HAVE_DBUS, 1, [Define to 1 if using D-Bus.])
2811 dnl dbus_watch_get_unix_fd has been introduced in D-Bus 1.1.1.
2812 dnl dbus_type_is_valid and dbus_validate_* have been introduced in
2815 LIBS="$LIBS $DBUS_LIBS"
2816 AC_CHECK_FUNCS(dbus_watch_get_unix_fd \
2817 dbus_type_is_valid \
2818 dbus_validate_bus_name \
2819 dbus_validate_path \
2820 dbus_validate_interface \
2821 dbus_validate_member)
2826 AC_SUBST(DBUS_CFLAGS)
2830 dnl GSettings has been tested under GNU/Linux only.
2832 if test "${HAVE_X11}" = "yes" && test "${with_gsettings}" = "yes"; then
2833 EMACS_CHECK_MODULES([GSETTINGS], [gio-2.0 >= 2.26])
2834 if test "$HAVE_GSETTINGS" = "yes"; then
2836 CFLAGS="$CFLAGS $GSETTINGS_CFLAGS"
2838 LIBS="$LIBS $GSETTINGS_LIBS"
2839 AC_CACHE_CHECK([whether GSettings is in gio], [emacs_cv_gsettings_in_gio],
2842 [[/* Check that gsettings really is present. */
2843 #include <glib-object.h>
2844 #include <gio/gio.h>
2847 GSettings *settings;
2848 GVariant *val = g_settings_get_value (settings, "");
2850 [emacs_cv_gsettings_in_gio=yes], [emacs_cv_gsettings_in_gio=no])])
2852 if test "$emacs_cv_gsettings_in_gio" = "yes"; then
2853 AC_DEFINE(HAVE_GSETTINGS, 1, [Define to 1 if using GSettings.])
2854 SETTINGS_CFLAGS="$GSETTINGS_CFLAGS"
2855 SETTINGS_LIBS="$GSETTINGS_LIBS"
2856 test "$with_gconf" = "yes" || with_gconf=no
2863 dnl GConf has been tested under GNU/Linux only.
2864 dnl The version is really arbitrary, it is about the same age as Gtk+ 2.6.
2866 if test "${HAVE_X11}" = "yes" && test "${with_gconf}" != "no"; then
2867 EMACS_CHECK_MODULES([GCONF], [gconf-2.0 >= 2.13])
2868 if test "$HAVE_GCONF" = yes; then
2869 AC_DEFINE(HAVE_GCONF, 1, [Define to 1 if using GConf.])
2870 dnl Newer GConf doesn't link with g_objects, so this is not defined.
2871 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GCONF_CFLAGS"
2872 SETTINGS_LIBS="$SETTINGS_LIBS $GCONF_LIBS"
2876 if test "$HAVE_GSETTINGS" = "yes" || test "$HAVE_GCONF" = "yes"; then
2877 EMACS_CHECK_MODULES([GOBJECT], [gobject-2.0 >= 2.0])
2878 if test "$HAVE_GOBJECT" = "yes"; then
2879 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GOBJECT_CFLAGS"
2880 SETTINGS_LIBS="$SETTINGS_LIBS $GOBJECT_LIBS"
2882 SAVE_CFLAGS="$CFLAGS"
2884 CFLAGS="$SETTINGS_CFLAGS $CFLAGS"
2885 LIBS="$SETTINGS_LIBS $LIBS"
2886 CFLAGS="$SAVE_CFLAGS"
2889 AC_SUBST(SETTINGS_CFLAGS)
2890 AC_SUBST(SETTINGS_LIBS)
2893 dnl SELinux is available for GNU/Linux only.
2896 if test "${with_selinux}" = "yes"; then
2897 AC_CHECK_LIB([selinux], [lgetfilecon], HAVE_LIBSELINUX=yes, HAVE_LIBSELINUX=no)
2898 if test "$HAVE_LIBSELINUX" = yes; then
2899 AC_DEFINE(HAVE_LIBSELINUX, 1, [Define to 1 if using SELinux.])
2900 LIBSELINUX_LIBS=-lselinux
2903 AC_SUBST(LIBSELINUX_LIBS)
2906 if test "${with_gnutls}" != "no" ; then
2907 EMACS_CHECK_MODULES([LIBGNUTLS], [gnutls >= 2.12.2],
2908 [HAVE_GNUTLS=yes], [HAVE_GNUTLS=no])
2909 if test "${HAVE_GNUTLS}" = "yes"; then
2910 AC_DEFINE(HAVE_GNUTLS, 1, [Define if using GnuTLS.])
2913 # Windows loads GnuTLS dynamically
2914 if test "${opsys}" = "mingw32"; then
2919 AC_SUBST(LIBGNUTLS_LIBS)
2920 AC_SUBST(LIBGNUTLS_CFLAGS)
2923 if test "${with_libsystemd}" = "yes" ; then
2924 dnl This code has been tested with libsystemd 222 and later.
2925 dnl FIXME: Find the earliest version number for which Emacs should work,
2926 dnl and change '222' to that number.
2927 EMACS_CHECK_MODULES([LIBSYSTEMD], [libsystemd >= 222],
2928 [HAVE_LIBSYSTEMD=yes], [HAVE_LIBSYSTEMD=no])
2929 if test "${HAVE_LIBSYSTEMD}" = "yes"; then
2930 AC_DEFINE(HAVE_LIBSYSTEMD, 1, [Define if using libsystemd.])
2934 AC_SUBST(LIBSYSTEMD_LIBS)
2935 AC_SUBST(LIBSYSTEMD_CFLAGS)
2940 if test "${with_json}" != no; then
2941 EMACS_CHECK_MODULES([JSON], [jansson >= 2.7],
2942 [HAVE_JSON=yes], [HAVE_JSON=no])
2943 if test "${HAVE_JSON}" = yes; then
2944 AC_DEFINE(HAVE_JSON, 1, [Define if using Jansson.])
2948 # Windows loads libjansson dynamically
2949 if test "${opsys}" = "mingw32"; then
2955 AC_SUBST(JSON_CFLAGS)
2961 dnl MS Windows native file monitor is available for mingw32 only.
2962 case $with_file_notification,$opsys in
2964 AC_MSG_ERROR(['--with-file-notification=w32' was specified, but
2965 this is only supported on MS-Windows native and MinGW32 builds.
2966 Consider using gfile instead.])
2968 w32,* | yes,mingw32)
2969 AC_CHECK_HEADER(windows.h)
2970 if test "$ac_cv_header_windows_h" = yes ; then
2971 AC_DEFINE(HAVE_W32NOTIFY, 1, [Define to 1 to use w32notify.])
2972 NOTIFY_OBJ=w32notify.o
2973 NOTIFY_SUMMARY="yes (w32)"
2977 dnl inotify is available only on GNU/Linux.
2978 case $with_file_notification,$NOTIFY_OBJ in
2980 AC_CHECK_HEADER(sys/inotify.h)
2981 if test "$ac_cv_header_sys_inotify_h" = yes ; then
2982 AC_CHECK_FUNC(inotify_init1)
2983 if test "$ac_cv_func_inotify_init1" = yes; then
2984 AC_DEFINE(HAVE_INOTIFY, 1, [Define to 1 to use inotify.])
2985 NOTIFY_OBJ=inotify.o
2986 NOTIFY_SUMMARY="yes -lglibc (inotify)"
2991 dnl kqueue is available on BSD-like systems.
2992 case $with_file_notification,$NOTIFY_OBJ in
2994 EMACS_CHECK_MODULES([KQUEUE], [libkqueue])
2995 if test "$HAVE_KQUEUE" = "yes"; then
2996 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2997 CPPFLAGS="$CPPFLAGS -I/usr/include/kqueue"
2998 NOTIFY_CFLAGS=$KQUEUE_CFLAGS
2999 NOTIFY_LIBS=$KQUEUE_LIBS
3001 NOTIFY_SUMMARY="yes -lkqueue"
3003 AC_SEARCH_LIBS(kqueue, [])
3004 if test "$ac_cv_search_kqueue" != no; then
3005 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
3007 NOTIFY_SUMMARY="yes (kqueue)"
3012 dnl g_file_monitor exists since glib 2.18. G_FILE_MONITOR_EVENT_MOVED
3013 dnl has been added in glib 2.24. It has been tested under
3015 case $with_file_notification,$NOTIFY_OBJ in
3017 if test "${HAVE_NS}" = yes; then
3018 AC_MSG_ERROR(['--with-file-notification=gfile' is not supported in NextStep builds.
3019 Consider kqueue instead.])
3021 EMACS_CHECK_MODULES([GFILENOTIFY], [gio-2.0 >= 2.24])
3022 if test "$HAVE_GFILENOTIFY" = "yes"; then
3023 AC_DEFINE(HAVE_GFILENOTIFY, 1, [Define to 1 if using GFile.])
3024 NOTIFY_CFLAGS=$GFILENOTIFY_CFLAGS
3025 NOTIFY_LIBS=$GFILENOTIFY_LIBS
3026 NOTIFY_OBJ=gfilenotify.o
3027 NOTIFY_SUMMARY="yes -lgio (gfile)"
3032 case $with_file_notification,$NOTIFY_OBJ in
3033 yes,* | no,* | *,?*) ;;
3034 *) AC_MSG_ERROR([File notification '$with_file_notification' requested but requirements not found.]) ;;
3037 if test -n "$NOTIFY_OBJ"; then
3038 AC_DEFINE(USE_FILE_NOTIFY, 1, [Define to 1 if using file notifications.])
3040 AC_SUBST(NOTIFY_CFLAGS)
3041 AC_SUBST(NOTIFY_LIBS)
3042 AC_SUBST(NOTIFY_OBJ)
3044 dnl Do not put whitespace before the #include statements below.
3045 dnl Older compilers (eg sunos4 cc) choke on it.
3048 if test x"${USE_X_TOOLKIT}" = xmaybe || test x"${USE_X_TOOLKIT}" = xLUCID; then
3049 if test "$with_xaw3d" != no; then
3050 AC_CACHE_VAL(emacs_cv_xaw3d,
3051 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
3052 #include <X11/Intrinsic.h>
3053 #include <X11/Xaw3d/Simple.h>]],
3055 [AC_CHECK_LIB(Xaw3d, XawScrollbarSetThumb,
3056 emacs_cv_xaw3d=yes, emacs_cv_xaw3d=no)],
3057 emacs_cv_xaw3d=no)])
3061 if test $emacs_cv_xaw3d = yes; then
3062 AC_MSG_CHECKING(for xaw3d)
3063 AC_MSG_RESULT([yes; using Lucid toolkit])
3067 AC_DEFINE(HAVE_XAW3D, 1,
3068 [Define to 1 if you have the Xaw3d library (-lXaw3d).])
3070 AC_MSG_CHECKING(for xaw3d)
3072 AC_MSG_CHECKING(for libXaw)
3073 AC_CACHE_VAL(emacs_cv_xaw,
3074 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
3075 #include <X11/Intrinsic.h>
3076 #include <X11/Xaw/Simple.h>]],
3080 if test $emacs_cv_xaw = yes; then
3081 AC_MSG_RESULT([yes; using Lucid toolkit])
3084 elif test x"${USE_X_TOOLKIT}" = xLUCID; then
3085 AC_MSG_ERROR([Lucid toolkit requires X11/Xaw include files])
3087 AC_MSG_ERROR([No X toolkit could be found.
3088 If you are sure you want Emacs compiled without an X toolkit, pass
3090 to configure. Otherwise, install the development libraries for the toolkit
3091 that you want to use (e.g. Gtk+) and re-run configure.])
3096 X_TOOLKIT_TYPE=$USE_X_TOOLKIT
3100 if test "${USE_X_TOOLKIT}" != "none"; then
3101 AC_MSG_CHECKING(X11 toolkit version)
3102 AC_CACHE_VAL(emacs_cv_x11_toolkit_version_6,
3103 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Intrinsic.h>]],
3104 [[#if XtSpecificationRelease < 6
3107 ]])], emacs_cv_x11_toolkit_version_6=yes, emacs_cv_x11_toolkit_version_6=no)])
3108 HAVE_X11XTR6=$emacs_cv_x11_toolkit_version_6
3109 if test $emacs_cv_x11_toolkit_version_6 = yes; then
3110 AC_MSG_RESULT(6 or newer)
3111 AC_DEFINE(HAVE_X11XTR6, 1,
3112 [Define to 1 if you have the X11R6 or newer version of Xt.])
3113 LIBXTR6="-lSM -lICE"
3115 ## Use libw.a along with X11R6 Xt.
3116 unixware) LIBXTR6="$LIBXTR6 -lw" ;;
3119 AC_MSG_RESULT(before 6)
3122 dnl If using toolkit, check whether libXmu.a exists.
3123 dnl tranle@intellicorp.com says libXmu.a can need XtMalloc in libXt.a to link.
3125 if test x$HAVE_X11XTR6 = xyes; then
3126 OTHERLIBS='-lXt -lSM -lICE'
3130 AC_SEARCH_LIBS([XmuConvertStandardSelection], [Xmu], [], [], [$OTHERLIBS])
3131 if test "X$LIBS" != "X$OLDLIBS"; then
3132 LIBXMU=$ac_cv_search_XmuConvertStandardSelection
3135 dnl ac_cv_search_XmuConvertStandardSelection is also referenced below.
3141 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3142 # OpenMotif may be installed in such a way on some GNU/Linux systems.
3143 if test -d /usr/include/openmotif; then
3144 CPPFLAGS="-I/usr/include/openmotif $CPPFLAGS"
3145 emacs_cv_openmotif=yes
3146 case "$canonical" in
3147 x86_64-*-linux-gnu* | powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*)
3148 test -d /usr/lib64/openmotif && LDFLAGS="-L/usr/lib64/openmotif $LDFLAGS"
3151 test -d /usr/lib/openmotif && LDFLAGS="-L/usr/lib/openmotif $LDFLAGS"
3154 emacs_cv_openmotif=no
3156 AC_CACHE_CHECK(for (Open)Motif version 2.1, emacs_cv_motif_version_2_1,
3157 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <Xm/Xm.h>]],
3158 [[#if XmVERSION > 2 || (XmVERSION == 2 && XmREVISION >= 1)
3161 Motif version prior to 2.1.
3163 emacs_cv_motif_version_2_1=yes, emacs_cv_motif_version_2_1=no)])
3164 if test $emacs_cv_motif_version_2_1 = yes; then
3165 AC_CHECK_LIB(Xp, XpCreateContext, LIBXP=-lXp)
3166 if test x$emacs_cv_openmotif = xyes; then
3167 REAL_CPPFLAGS="-I/usr/include/openmotif $REAL_CPPFLAGS"
3170 AC_CACHE_CHECK(for LessTif where some systems put it, emacs_cv_lesstif,
3171 # We put this in CFLAGS temporarily to precede other -I options
3172 # that might be in CFLAGS temporarily.
3173 # We put this in CPPFLAGS where it precedes the other -I options.
3174 OLD_CPPFLAGS=$CPPFLAGS
3176 CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CPPFLAGS"
3177 CFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CFLAGS"
3178 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include </usr/X11R6/LessTif/Motif1.2/include/Xm/Xm.h>]],
3180 emacs_cv_lesstif=yes, emacs_cv_lesstif=no)])
3181 if test $emacs_cv_lesstif = yes; then
3182 # Make sure this -I option remains in CPPFLAGS after it is set
3183 # back to REAL_CPPFLAGS.
3184 # There is no need to change REAL_CFLAGS, because REAL_CFLAGS does not
3185 # have those other -I options anyway. Ultimately, having this
3186 # directory ultimately in CPPFLAGS will be enough.
3187 REAL_CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $REAL_CPPFLAGS"
3188 LDFLAGS="-L/usr/X11R6/LessTif/Motif1.2/lib $LDFLAGS"
3191 CPPFLAGS=$OLD_CPPFLAGS
3194 AC_CHECK_HEADER([Xm/BulletinB.h], [],
3195 [AC_MSG_ERROR([Motif toolkit requested but requirements not found.])])
3198 dnl Use toolkit scroll bars if configured for GTK or X toolkit and either
3199 dnl using Motif or Xaw3d is available, and unless
3200 dnl --with-toolkit-scroll-bars=no was specified.
3202 AH_TEMPLATE(USE_TOOLKIT_SCROLL_BARS,
3203 [Define to 1 if we should use toolkit scroll bars.])dnl
3204 USE_TOOLKIT_SCROLL_BARS=no
3205 if test "${with_toolkit_scroll_bars}" != "no"; then
3206 if test "${USE_X_TOOLKIT}" != "none"; then
3207 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3208 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3210 USE_TOOLKIT_SCROLL_BARS=yes
3211 elif test "${HAVE_XAW3D}" = "yes" || test "${USE_X_TOOLKIT}" = "LUCID"; then
3212 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3213 USE_TOOLKIT_SCROLL_BARS=yes
3215 elif test "${HAVE_GTK}" = "yes"; then
3216 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3217 USE_TOOLKIT_SCROLL_BARS=yes
3218 elif test "${HAVE_NS}" = "yes"; then
3219 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3220 USE_TOOLKIT_SCROLL_BARS=yes
3221 elif test "${HAVE_W32}" = "yes"; then
3222 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3223 USE_TOOLKIT_SCROLL_BARS=yes
3227 dnl See if XIM is available.
3228 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3229 #include <X11/Xlib.h>
3230 #include <X11/Xresource.h>]],
3231 [[XIMProc callback;]])],
3233 AC_DEFINE(HAVE_XIM, 1, [Define to 1 if XIM is available])],
3236 dnl Note this is non-standard. --with-xim does not control whether
3237 dnl XIM support is compiled in, it only affects the runtime default of
3238 dnl use_xim in xterm.c.
3239 if test "${with_xim}" != "no"; then
3240 AC_DEFINE(USE_XIM, 1,
3241 [Define to 1 to default runtime use of XIM to on.])
3245 if test "${HAVE_XIM}" != "no"; then
3247 if test "$GCC" = yes; then
3248 CFLAGS="$CFLAGS --pedantic-errors"
3250 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3251 #include <X11/Xlib.h>
3252 #include <X11/Xresource.h>]],
3258 XPointer *client_data;
3260 /* If we're not using GCC, it's probably not XFree86, and this is
3261 probably right, but we can't use something like --pedantic-errors. */
3262 extern Bool XRegisterIMInstantiateCallback(Display*, XrmDatabase, char*,
3263 char*, XIMProc, XPointer*);
3265 (void)XRegisterIMInstantiateCallback(display, db, res_name, res_class, callback,
3267 [emacs_cv_arg6_star=yes])
3268 AH_TEMPLATE(XRegisterIMInstantiateCallback_arg6,
3269 [Define to the type of the 6th arg of XRegisterIMInstantiateCallback,
3270 either XPointer or XPointer*.])dnl
3271 if test "$emacs_cv_arg6_star" = yes; then
3272 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer*])
3274 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer])
3281 if test "${HAVE_X11}" = "yes"; then
3284 [[#include <X11/Intrinsic.h>
3285 #include <X11/extensions/Xrender.h>
3287 [[return !XRenderQueryExtension;]])],
3288 [AC_CHECK_LIB([Xrender], [XRenderQueryExtension], [HAVE_XRENDER=yes])])
3289 if test $HAVE_XRENDER = yes; then
3290 XRENDER_LIBS="-lXrender"
3291 AC_SUBST(XRENDER_LIBS)
3292 AC_DEFINE([HAVE_XRENDER], 1, [Define to 1 if XRender is available.])
3297 if test "${HAVE_X11}" = "yes"; then
3298 if test "${with_cairo}" != "no"; then
3299 CAIRO_REQUIRED=1.8.0
3300 CAIRO_MODULE="cairo >= $CAIRO_REQUIRED"
3301 EMACS_CHECK_MODULES(CAIRO, $CAIRO_MODULE)
3302 if test $HAVE_CAIRO = yes; then
3303 AC_DEFINE(USE_CAIRO, 1, [Define to 1 if using cairo.])
3304 CFLAGS="$CFLAGS $CAIRO_CFLAGS"
3305 LIBS="$LIBS $CAIRO_LIBS"
3306 AC_SUBST(CAIRO_CFLAGS)
3307 AC_SUBST(CAIRO_LIBS)
3309 AC_MSG_WARN([cairo requested but not found.])
3314 ### Start of font-backend (under any platform) section.
3315 # (nothing here yet -- this is a placeholder)
3316 ### End of font-backend (under any platform) section.
3318 ### Start of font-backend (under X11) section.
3319 if test "${HAVE_X11}" = "yes"; then
3320 if test $HAVE_CAIRO = yes; then
3321 dnl Strict linkers fail with
3322 dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
3323 dnl if -lfreetype is not specified.
3324 dnl The following is needed to set FREETYPE_LIBS.
3325 EMACS_CHECK_MODULES([FREETYPE], [freetype2])
3327 test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(cairo requires libfreetype)
3329 EMACS_CHECK_MODULES([FONTCONFIG], [fontconfig >= 2.2.0])
3331 test "$HAVE_FONTCONFIG" = "no" && AC_MSG_ERROR(cairo requires libfontconfig)
3332 dnl For the "Does Emacs use" message at the end.
3335 ## Use -lXft if available, unless '--with-xft=no'.
3337 if test "x${with_x}" = "xno"; then
3341 if test "$with_xft" != no; then
3342 EMACS_CHECK_MODULES([FONTCONFIG], [fontconfig >= 2.2.0])
3343 with_xft=$HAVE_FONTCONFIG
3346 if test "x${with_xft}" != "xno"; then
3348 EMACS_CHECK_MODULES([XFT], [xft >= 0.13.0], [], [HAVE_XFT=no])
3349 ## Because xterm.c uses XRenderQueryExtension when XFT is
3350 ## enabled, we also need to link to -lXrender.
3351 if test "$HAVE_XFT" != no && test "$HAVE_XRENDER" != no; then
3352 OLD_CPPFLAGS="$CPPFLAGS"
3353 OLD_CFLAGS="$CFLAGS"
3355 CPPFLAGS="$CPPFLAGS $XFT_CFLAGS"
3356 CFLAGS="$CFLAGS $XFT_CFLAGS"
3357 LIBS="$XFT_LIBS $LIBS"
3358 AC_CHECK_HEADER(X11/Xft/Xft.h,
3359 AC_CHECK_LIB(Xft, XftFontOpen, HAVE_XFT=yes, , $XFT_LIBS) , ,
3360 [[#include <X11/X.h>]])
3362 if test "${HAVE_XFT}" = "yes"; then
3363 AC_DEFINE(HAVE_XFT, 1, [Define to 1 if you have the Xft library.])
3365 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $XFT_CFLAGS"
3366 fi # "${HAVE_XFT}" = "yes"
3367 CPPFLAGS=$OLD_CPPFLAGS
3371 # Make sure XFT is disabled if we found XFT but not XRender
3373 fi # "$HAVE_XFT" != no
3374 fi # "x${with_xft}" != "xno"
3376 if test "$HAVE_XFT" != "yes"; then
3377 dnl For the "Does Emacs use" message at the end.
3381 dnl Strict linkers fail with
3382 dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
3383 dnl if -lfreetype is not specified.
3384 dnl The following is needed to set FREETYPE_LIBS.
3385 EMACS_CHECK_MODULES([FREETYPE], [freetype2])
3387 test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(libxft requires libfreetype)
3389 fi # $HAVE_CAIRO != yes
3392 if test "${HAVE_FREETYPE}" = "yes"; then
3393 AC_DEFINE(HAVE_FREETYPE, 1,
3394 [Define to 1 if using the freetype and fontconfig libraries.])
3397 CFLAGS="$CFLAGS $FREETYPE_CFLAGS"
3398 LIBS="$FREETYPE_LIBS $LIBS"
3399 AC_CHECK_FUNCS(FT_Face_GetCharVariantIndex)
3402 if test "${with_libotf}" != "no"; then
3403 EMACS_CHECK_MODULES([LIBOTF], [libotf])
3404 if test "$HAVE_LIBOTF" = "yes"; then
3405 AC_DEFINE(HAVE_LIBOTF, 1, [Define to 1 if using libotf.])
3406 AC_CHECK_LIB(otf, OTF_get_variation_glyphs,
3407 HAVE_OTF_GET_VARIATION_GLYPHS=yes,
3408 HAVE_OTF_GET_VARIATION_GLYPHS=no)
3409 if test "${HAVE_OTF_GET_VARIATION_GLYPHS}" = "yes"; then
3410 AC_DEFINE(HAVE_OTF_GET_VARIATION_GLYPHS, 1,
3411 [Define to 1 if libotf has OTF_get_variation_glyphs.])
3413 if ! $PKG_CONFIG --atleast-version=0.9.16 libotf; then
3414 AC_DEFINE(HAVE_OTF_KANNADA_BUG, 1,
3415 [Define to 1 if libotf is affected by https://debbugs.gnu.org/28110.])
3419 dnl FIXME should there be an error if HAVE_FREETYPE != yes?
3420 dnl Does the new font backend require it, or can it work without it?
3424 if test "${HAVE_LIBOTF}" = yes; then
3425 if test "${with_m17n_flt}" != "no"; then
3426 EMACS_CHECK_MODULES([M17N_FLT], [m17n-flt])
3427 if test "$HAVE_M17N_FLT" = "yes"; then
3428 AC_DEFINE(HAVE_M17N_FLT, 1, [Define to 1 if using libm17n-flt.])
3432 else # "${HAVE_X11}" != "yes"
3437 fi # "${HAVE_X11}" != "yes"
3440 ### On MS-Windows we use hb_font_get_nominal_glyph, which appeared
3441 ### in HarfBuzz version 1.2.3
3442 if test "${HAVE_W32}" = "yes"; then
3443 harfbuzz_required_ver=1.2.3
3445 harfbuzz_required_ver=0.9.42
3447 if test "${HAVE_X11}" = "yes" && test "${HAVE_FREETYPE}" = "yes" \
3448 || test "${HAVE_W32}" = "yes"; then
3449 if test "${with_harfbuzz}" != "no"; then
3450 EMACS_CHECK_MODULES([HARFBUZZ], [harfbuzz >= $harfbuzz_required_ver])
3451 if test "$HAVE_HARFBUZZ" = "yes"; then
3452 AC_DEFINE(HAVE_HARFBUZZ, 1, [Define to 1 if using HarfBuzz.])
3453 ### mingw32 and Cygwin-w32 don't use -lharfbuzz, since they load
3454 ### the library dynamically.
3455 if test "${HAVE_W32}" = "yes"; then
3462 ### End of font-backend section.
3464 AC_SUBST(FREETYPE_CFLAGS)
3465 AC_SUBST(FREETYPE_LIBS)
3466 AC_SUBST(FONTCONFIG_CFLAGS)
3467 AC_SUBST(FONTCONFIG_LIBS)
3468 AC_SUBST(HARFBUZZ_CFLAGS)
3469 AC_SUBST(HARFBUZZ_LIBS)
3470 AC_SUBST(LIBOTF_CFLAGS)
3471 AC_SUBST(LIBOTF_LIBS)
3472 AC_SUBST(M17N_FLT_CFLAGS)
3473 AC_SUBST(M17N_FLT_LIBS)
3475 if test "${HAVE_X11}" = "yes"; then
3476 AC_CHECK_HEADER(X11/Xlib-xcb.h,
3477 AC_CHECK_LIB(xcb, xcb_translate_coordinates, HAVE_XCB=yes))
3478 if test "${HAVE_XCB}" = "yes"; then
3479 AC_CHECK_LIB(X11-xcb, XGetXCBConnection, HAVE_X11_XCB=yes)
3480 if test "${HAVE_X11_XCB}" = "yes"; then
3481 AC_DEFINE(USE_XCB, 1,
3482 [Define to 1 if you have the XCB library and X11-XCB library for mixed
3483 X11/XCB programming.])
3484 XCB_LIBS="-lX11-xcb -lxcb"
3490 ### Use -lXpm if available, unless '--with-xpm=no'.
3491 ### mingw32 doesn't use -lXpm, since it loads the library dynamically.
3492 ### The Cygwin-w32 build uses <noX/xpm.h> instead of <X11/xpm.h>, so
3493 ### we need to set LDFLAGS accordingly.
3496 if test "${HAVE_W32}" = "yes" && test "${opsys}" = "cygwin"; then
3497 if test "${with_xpm}" != "no"; then
3498 SAVE_LDFLAGS="$LDFLAGS"
3499 LDFLAGS="$LDFLAGS -L/usr/lib/noX"
3500 AC_CHECK_HEADER(noX/xpm.h,
3501 [AC_CHECK_LIB(Xpm, XpmReadFileToImage, HAVE_XPM=yes)])
3502 if test "${HAVE_XPM}" = "yes"; then
3503 AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
3504 [emacs_cv_cpp_xpm_return_alloc_pixels],
3505 [AC_EGREP_CPP(no_return_alloc_pixels,
3506 [#include "noX/xpm.h"
3507 #ifndef XpmReturnAllocPixels
3508 no_return_alloc_pixels
3510 ], emacs_cv_cpp_xpm_return_alloc_pixels=no,
3511 emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
3513 if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
3515 LDFLAGS="$SAVE_LDFLAGS"
3520 if test "${HAVE_XPM}" = "yes"; then
3521 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3526 if test "${HAVE_X11}" = "yes"; then
3527 dnl Avoid Xpm on AIX unless requested, as it crashes; see Bug#17598.
3528 case $opsys,$with_xpm_set,$with_xpm in
3530 aix4-2,*) with_xpm=no;;
3533 if test "${with_xpm}" != "no"; then
3534 AC_CHECK_HEADER(X11/xpm.h,
3535 [AC_CHECK_LIB(Xpm, XpmReadFileToPixmap, HAVE_XPM=yes, , -lX11)])
3536 if test "${HAVE_XPM}" = "yes"; then
3537 AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
3538 [emacs_cv_cpp_xpm_return_alloc_pixels],
3539 [AC_EGREP_CPP(no_return_alloc_pixels,
3540 [#include "X11/xpm.h"
3541 #ifndef XpmReturnAllocPixels
3542 no_return_alloc_pixels
3544 ], emacs_cv_cpp_xpm_return_alloc_pixels=no,
3545 emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
3547 if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
3553 if test "${HAVE_XPM}" = "yes"; then
3554 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3556 elif test "$opsys,$LUCID_LIBW" = aix4-2,-lXaw; then
3557 dnl AIX -lXaw needs -lXpm linked too; see Bug#17598 Message#152.
3562 ### FIXME: Perhaps regroup to minimize code duplication due to MinGW's
3563 ### slightly different requirements wrt image libraries (it doesn't
3564 ### use -lXpm because it loads the xpm shared library dynamically at
3566 if test "${opsys}" = "mingw32"; then
3567 if test "${with_xpm}" != "no"; then
3568 AC_CHECK_HEADER(X11/xpm.h, HAVE_XPM=yes, HAVE_XPM=no, [
3572 if test "${HAVE_XPM}" = "yes"; then
3573 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3579 ### Use -ljpeg if available, unless '--with-jpeg=no'.
3582 if test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes" \
3583 || test "${HAVE_NS}" = "yes"; then
3584 if test "${with_jpeg}" != "no"; then
3585 AC_CACHE_CHECK([for jpeglib 6b or later],
3588 for emacs_cv_jpeglib in yes -ljpeg no; do
3589 case $emacs_cv_jpeglib in
3592 *) LIBS="$LIBS $emacs_cv_jpeglib";;
3596 [[#undef HAVE_STDLIB_H /* Avoid config.h/jpeglib.h collision. */
3597 #include <stdio.h> /* jpeglib.h needs FILE and size_t. */
3598 #include <jpeglib.h>
3600 char verify[JPEG_LIB_VERSION < 62 ? -1 : 1];
3601 struct jpeg_decompress_struct cinfo;
3604 jpeg_create_decompress (&cinfo);
3605 WARNMS (&cinfo, JWRN_JPEG_EOF);
3606 jpeg_destroy_decompress (&cinfo);
3608 [emacs_link_ok=yes],
3611 test $emacs_link_ok = yes && break
3613 if test "$emacs_cv_jpeglib" != no; then
3615 AC_DEFINE([HAVE_JPEG], 1,
3616 [Define to 1 if you have the jpeg library (typically -ljpeg).])
3617 ### mingw32 doesn't use -ljpeg, since it loads the library
3618 ### dynamically when needed, and doesn't want a run-time
3619 ### dependency on the jpeglib DLL.
3620 test "$emacs_cv_jpeglib" != yes && test "${opsys}" != "mingw32" \
3621 && LIBJPEG=$emacs_cv_jpeglib
3630 if test "${with_lcms2}" != "no"; then
3631 EMACS_CHECK_MODULES([LCMS2], [lcms2])
3633 if test "${HAVE_LCMS2}" = "yes"; then
3634 AC_DEFINE([HAVE_LCMS2], 1, [Define to 1 if you have the lcms2 library (-llcms2).])
3635 ### mingw32 doesn't use -llcms2, since it loads the library dynamically.
3636 if test "${opsys}" = "mingw32"; then
3640 AC_SUBST(LCMS2_CFLAGS)
3641 AC_SUBST(LCMS2_LIBS)
3645 if test "${with_zlib}" != "no"; then
3647 AC_SEARCH_LIBS([inflateEnd], [z], [HAVE_ZLIB=yes])
3649 case $ac_cv_search_inflateEnd in
3650 -*) LIBZ=$ac_cv_search_inflateEnd ;;
3653 if test "${HAVE_ZLIB}" = "yes"; then
3654 AC_DEFINE([HAVE_ZLIB], 1, [Define to 1 if you have the zlib library (-lz).])
3655 ### mingw32 doesn't use -lz, since it loads the library dynamically.
3656 if test "${opsys}" = "mingw32"; then
3662 ### Dynamic modules support
3668 cygwin|mingw32) MODULES_SUFFIX=".dll" ;;
3669 darwin) MODULES_SUFFIX=".dylib" ;;
3670 *) MODULES_SUFFIX=".so" ;;
3673 darwin) MODULES_SECONDARY_SUFFIX='.so' ;;
3674 *) MODULES_SECONDARY_SUFFIX='' ;;
3676 if test "${with_modules}" != "no"; then
3682 cygwin|mingw32|darwin)
3686 # BSD systems have dlopen in libc.
3687 AC_CHECK_FUNC([dlopen], [HAVE_MODULES=yes])
3691 if test "${HAVE_MODULES}" = no; then
3692 AC_MSG_ERROR([Dynamic modules are not supported on your system])
3695 LIBS="$LIBS $LIBMODULES"
3696 AC_CHECK_FUNCS([dladdr dlfunc])
3701 if test "${HAVE_MODULES}" = yes; then
3702 MODULES_OBJ="emacs-module.o"
3704 AC_DEFINE(HAVE_MODULES, 1, [Define to 1 if dynamic modules are enabled])
3705 AC_DEFINE_UNQUOTED(MODULES_SUFFIX, "$MODULES_SUFFIX",
3706 [System extension for dynamic libraries])
3707 if test -n "${MODULES_SECONDARY_SUFFIX}"; then
3708 AC_DEFINE_UNQUOTED(MODULES_SECONDARY_SUFFIX, "$MODULES_SECONDARY_SUFFIX",
3709 [Alternative system extension for dynamic libraries.])
3712 AC_SUBST(MODULES_OBJ)
3713 AC_SUBST(LIBMODULES)
3714 AC_SUBST(HAVE_MODULES)
3715 AC_SUBST(MODULES_SUFFIX)
3716 AC_SUBST(MODULES_SECONDARY_SUFFIX)
3718 AC_CONFIG_FILES([src/emacs-module.h])
3719 AC_SUBST_FILE([module_env_snippet_25])
3720 AC_SUBST_FILE([module_env_snippet_26])
3721 AC_SUBST_FILE([module_env_snippet_27])
3722 AC_SUBST_FILE([module_env_snippet_28])
3723 module_env_snippet_25="$srcdir/src/module-env-25.h"
3724 module_env_snippet_26="$srcdir/src/module-env-26.h"
3725 module_env_snippet_27="$srcdir/src/module-env-27.h"
3726 module_env_snippet_28="$srcdir/src/module-env-28.h"
3727 emacs_major_version="${PACKAGE_VERSION%%.*}"
3728 AC_SUBST(emacs_major_version)
3730 ### Emacs Lisp native compiler support
3732 AC_DEFUN([libgccjit_smoke_test], [
3734 [[#include <libgccjit.h>
3738 main (int argc, char **argv)
3740 gcc_jit_context *ctxt;
3741 gcc_jit_result *result;
3742 ctxt = gcc_jit_context_acquire ();
3745 gcc_jit_type *int_type =
3746 gcc_jit_context_get_type (ctxt, GCC_JIT_TYPE_INT);
3747 gcc_jit_function *func =
3748 gcc_jit_context_new_function (ctxt, NULL,
3749 GCC_JIT_FUNCTION_EXPORTED,
3750 int_type, "foo", 0, NULL, 0);
3751 gcc_jit_block *block = gcc_jit_function_new_block (func, "foo");
3752 gcc_jit_block_end_with_return (
3755 gcc_jit_context_new_rvalue_from_int (ctxt, int_type, 1));
3756 result = gcc_jit_context_compile (ctxt);
3759 typedef int (*fn_type) (void);
3761 (fn_type)gcc_jit_result_get_code (result, "foo");
3766 gcc_jit_context_release (ctxt);
3767 gcc_jit_result_release (result);
3771 AC_DEFUN([libgccjit_not_found], [
3772 AC_MSG_ERROR([elisp native compiler requested but libgccjit not found.
3773 Please try installing libgccjit or similar package.
3774 If you are sure you want Emacs compiled without elisp native compiler, pass
3775 --without-native-compilation
3778 AC_DEFUN([libgccjit_dev_not_found], [
3779 AC_MSG_ERROR([elisp native compiler requested but libgccjit header files were
3781 Please try installing libgccjit-dev or similar package.
3782 If you are sure you want Emacs compiled without elisp native compiler, pass
3783 --without-nativecomp
3786 AC_DEFUN([libgccjit_broken], [
3787 AC_MSG_ERROR([Installed libgccjit has failed passing the smoke test.
3788 You can verify it yourself compiling:
3789 <https://gcc.gnu.org/onlinedocs/jit/intro/tutorial01.html>.
3790 Please report the issue to your distribution if libgccjit was installed through
3792 Here instructions on how to compile and install libgccjit from source:
3793 <https://gcc.gnu.org/wiki/JIT>.])])
3797 if test "${with_native_compilation}" != "no"; then
3798 if test "${HAVE_PDUMPER}" = no; then
3799 AC_MSG_ERROR(['--with-nativecomp' requires '--with-dumping=pdumper'])
3801 if test "${HAVE_ZLIB}" = no; then
3802 AC_MSG_ERROR(['--with-nativecomp' requires zlib])
3805 # Ensure libgccjit installed by Homebrew can be found.
3806 if test -n "$BREW"; then
3807 BREW_LIBGCCJIT_PREFIX=`$BREW --prefix --installed libgccjit 2>/dev/null`
3808 if test "$BREW_LIBGCCJIT_PREFIX"; then
3809 brew_libdir=`find ${BREW_LIBGCCJIT_PREFIX}/ -name \*.so \
3810 | sed -e '1!d;s|/[[^/]]*\.so$||'`
3811 CFLAGS="$CFLAGS -I${BREW_LIBGCCJIT_PREFIX}/include"
3812 LDFLAGS="$LDFLAGS -L${brew_libdir} -I${BREW_LIBGCCJIT_PREFIX}/include"
3816 # Check if libgccjit is available.
3817 AC_CHECK_LIB(gccjit, gcc_jit_context_acquire, [], [libgccjit_not_found])
3818 AC_CHECK_HEADERS(libgccjit.h, [], [libgccjit_dev_not_found])
3819 emacs_save_LIBS=$LIBS
3821 # Check if libgccjit really works.
3822 AC_RUN_IFELSE([libgccjit_smoke_test], [], [libgccjit_broken])
3823 LIBS=$emacs_save_LIBS
3824 HAVE_NATIVE_COMP=yes
3826 # mingw32 loads the library dynamically.
3828 # OpenBSD doesn't have libdl, all the functions are in libc
3830 LIBGCCJIT_LIB="-lgccjit" ;;
3832 LIBGCCJIT_LIB="-lgccjit -ldl" ;;
3835 AC_DEFINE(HAVE_NATIVE_COMP, 1, [Define to 1 if native compiler is available.])
3837 AC_DEFINE_UNQUOTED(NATIVE_ELISP_SUFFIX, ".eln",
3838 [System extension for native compiled elisp])
3839 AC_SUBST(HAVE_NATIVE_COMP)
3840 AC_SUBST(LIBGCCJIT_LIB)
3843 if test "${NEED_DYNLIB}" = yes; then
3844 DYNLIB_OBJ="dynlib.o"
3846 AC_SUBST(DYNLIB_OBJ)
3848 ### Use -lpng if available, unless '--with-png=no'.
3852 if test "${with_png}" != no; then
3853 # mingw32 loads the library dynamically.
3854 if test "$opsys" = mingw32; then
3855 AC_CHECK_HEADER([png.h], [HAVE_PNG=yes])
3856 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes" \
3857 || test "${HAVE_NS}" = "yes"; then
3858 EMACS_CHECK_MODULES([PNG], [libpng >= 1.0.0])
3859 if test $HAVE_PNG = yes; then
3862 # Test old way in case pkg-config doesn't have it (older machines).
3863 AC_MSG_CHECKING([for libpng not configured by pkg-config])
3865 png_cflags=`(libpng-config --cflags) 2>&AS_MESSAGE_LOG_FD` &&
3866 png_ldflags=`(libpng-config --ldflags) 2>&AS_MESSAGE_LOG_FD` || {
3867 # libpng-config does not work; configure by hand.
3868 # Debian unstable as of July 2003 has multiple libpngs, and puts png.h
3869 # in /usr/include/libpng.
3870 if test -r /usr/include/libpng/png.h &&
3871 test ! -r /usr/include/png.h; then
3872 png_cflags=-I/usr/include/libpng
3880 CFLAGS="$CFLAGS $png_cflags"
3881 LIBS="$png_ldflags -lz -lm $LIBS"
3883 [AC_LANG_PROGRAM([[#include <png.h>]],
3884 [[return !png_get_channels (0, 0);]])],
3886 PNG_CFLAGS=`AS_ECHO(["$png_cflags"]) | sed -e "$edit_cflags"`
3887 LIBPNG=$png_ldflags])
3890 AC_MSG_RESULT([$HAVE_PNG])
3893 # $LIBPNG requires explicit -lz in some cases.
3894 # We don't know what those cases are, exactly, so play it safe and
3895 # append -lz to any nonempty $LIBPNG, unless we're already using LIBZ.
3896 case " $LIBPNG ",$LIBZ in
3897 *' -lz '*, | *' ',?*) ;;
3898 *) LIBPNG="$LIBPNG -lz" ;;
3902 if test $HAVE_PNG = yes; then
3903 AC_DEFINE([HAVE_PNG], [1], [Define to 1 if you have the png library.])
3906 CFLAGS="$CFLAGS $PNG_CFLAGS"
3907 AC_CHECK_DECL([png_longjmp],
3909 [AC_DEFINE([PNG_DEPSTRUCT], [],
3910 [Define to empty to suppress deprecation warnings when building
3911 with --enable-gcc-warnings and with libpng versions before 1.5,
3912 which lack png_longjmp.])],
3918 AC_SUBST(PNG_CFLAGS)
3920 ### Use -ltiff if available, unless '--with-tiff=no'.
3921 ### mingw32 doesn't use -ltiff, since it loads the library dynamically.
3924 if test "${opsys}" = "mingw32"; then
3925 if test "${with_tiff}" != "no"; then
3926 AC_CHECK_HEADER(tiffio.h, HAVE_TIFF=yes, HAVE_TIFF=no)
3928 if test "${HAVE_TIFF}" = "yes"; then
3929 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3931 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes" \
3932 || test "${HAVE_NS}" = "yes"; then
3933 if test "${with_tiff}" != "no"; then
3934 AC_CHECK_HEADER(tiffio.h,
3936 # At least one tiff package requires the jpeg library.
3937 if test "${HAVE_JPEG}" = yes; then tifflibs="-ljpeg $tifflibs"; fi
3938 AC_CHECK_LIB(tiff, TIFFGetVersion, HAVE_TIFF=yes, , $tifflibs)])
3941 if test "${HAVE_TIFF}" = "yes"; then
3942 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3943 dnl FIXME -lz -lm, as per libpng?
3949 ### Use -lgif or -lungif if available, unless '--with-gif=no'.
3950 ### mingw32 doesn't use -lgif/-lungif, since it loads the library dynamically.
3953 if test "${opsys}" = "mingw32"; then
3954 if test "${with_gif}" != "no"; then
3955 AC_CHECK_HEADER(gif_lib.h, HAVE_GIF=yes, HAVE_GIF=no)
3957 if test "${HAVE_GIF}" = "yes"; then
3958 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3960 elif test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no" \
3961 || test "${HAVE_W32}" = "yes" || test "${HAVE_NS}" = "yes"; then
3962 AC_CHECK_HEADER(gif_lib.h,
3963 # EGifPutExtensionLast only exists from version libungif-4.1.0b1.
3964 # Earlier versions can crash Emacs, but version 5.0 removes EGifPutExtensionLast.
3965 [AC_CHECK_LIB(gif, GifMakeMapObject, HAVE_GIF=yes,
3966 [AC_CHECK_LIB(gif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=maybe)])])
3968 if test "$HAVE_GIF" = yes; then
3970 elif test "$HAVE_GIF" = maybe; then
3971 # If gif_lib.h but no libgif, try libungif.
3972 AC_CHECK_LIB(ungif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=no)
3973 test "$HAVE_GIF" = yes && LIBGIF=-lungif
3976 if test "${HAVE_GIF}" = "yes"; then
3977 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3982 dnl Check for required libraries.
3985 if test "${HAVE_X11}" = "yes"; then
3986 case $with_xpm,$HAVE_XPM in
3987 no,* | ifavailable,* | *,yes) ;;
3989 WITH_IFAVAILABLE="--with-xpm=ifavailable";;
3991 case $with_jpeg,$HAVE_JPEG in
3992 no,* | ifavailable,* | *,yes) ;;
3993 *) MISSING="$MISSING libjpeg"
3994 WITH_IFAVAILABLE="$WITH_IFAVAILABLE --with-jpeg=ifavailable";;
3996 case $with_png,$HAVE_PNG in
3997 no,* | ifavailable,* | *,yes) ;;
3998 *) MISSING="$MISSING libpng"
3999 WITH_IFAVAILABLE="$WITH_IFAVAILABLE --with-png=ifavailable";;
4001 case $with_gif,$HAVE_GIF in
4002 no,* | ifavailable,* | *,yes) ;;
4003 *) MISSING="$MISSING libgif/libungif"
4004 WITH_IFAVAILABLE="$WITH_IFAVAILABLE --with-gif=ifavailable";;
4006 case $with_tiff,$HAVE_TIFF in
4007 no,* | ifavailable,* | *,yes) ;;
4008 *) MISSING="$MISSING libtiff"
4009 WITH_IFAVAILABLE="$WITH_IFAVAILABLE --with-tiff=ifavailable";;
4012 case $with_gnutls,$HAVE_GNUTLS in
4013 no,* | ifavailable,* | *,yes) ;;
4014 *) MISSING="$MISSING gnutls"
4015 WITH_IFAVAILABLE="$WITH_IFAVAILABLE --with-gnutls=ifavailable";;
4017 case $with_json,$HAVE_JSON in
4018 no,* | ifavailable,* | *,yes) ;;
4019 *) MISSING="$MISSING json"
4020 WITH_IFAVAILABLE="$WITH_IFAVAILABLE --with-json=ifavailable";;
4022 if test "X${MISSING}" != X; then
4023 # If we have a missing library, and we don't have pkg-config installed,
4024 # the missing pkg-config may be the reason. Give the user a hint.
4025 if test "X${PKG_CONFIG}" = X; then
4026 AC_MSG_WARN([Unable to locate a usable pkg-config])
4028 AC_MSG_ERROR([The following required libraries were not found:
4030 Maybe some development libraries/packages are missing?
4031 To build anyway, give:
4033 as options to configure.])
4036 ### Use -lgpm if available, unless '--with-gpm=no'.
4039 if test "${with_gpm}" != "no"; then
4040 AC_CHECK_HEADER(gpm.h,
4041 [AC_CHECK_LIB(gpm, Gpm_Open, HAVE_GPM=yes)])
4043 if test "${HAVE_GPM}" = "yes"; then
4044 AC_DEFINE(HAVE_GPM, 1, [Define to 1 if you have the gpm library (-lgpm).])
4050 dnl Check for malloc/malloc.h on darwin
4051 AC_CHECK_HEADERS_ONCE(malloc/malloc.h)
4054 ### Use NeXTstep API to implement GUI.
4055 if test "${HAVE_NS}" = "yes"; then
4056 AC_DEFINE(HAVE_NS, 1, [Define to 1 if you are using the NeXTstep API, either GNUstep or Cocoa on macOS.])
4057 if test "${NS_IMPL_COCOA}" = "yes"; then
4058 AC_DEFINE(NS_IMPL_COCOA, 1, [Define to 1 if you are using NS windowing under macOS.])
4060 if test "${NS_IMPL_GNUSTEP}" = "yes"; then
4061 AC_DEFINE(NS_IMPL_GNUSTEP, 1, [Define to 1 if you are using NS windowing under GNUstep.])
4062 if test $NS_GNUSTEP_CONFIG != yes; then
4063 # See also .m.o rule in src/Makefile.in. */
4064 # FIXME: are all these flags really needed? Document here why. */
4065 GNUSTEP_CFLAGS="-D_REENTRANT -fPIC -fno-strict-aliasing -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
4066 ## Extra CFLAGS applied to src/*.m files.
4067 GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -fgnu-runtime -Wno-import -fconstant-string-class=NSConstantString -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGSWARN -DGSDIAGNOSE"
4073 ### Use session management (-lSM -lICE) if available
4076 if test "${HAVE_X11}" = "yes"; then
4077 AC_CHECK_HEADER(X11/SM/SMlib.h,
4078 [AC_CHECK_LIB(SM, SmcOpenConnection, HAVE_X_SM=yes, , -lICE)])
4080 if test "${HAVE_X_SM}" = "yes"; then
4081 AC_DEFINE(HAVE_X_SM, 1, [Define to 1 if you have the SM library (-lSM).])
4087 ### Use XRandr (-lXrandr) if available
4089 if test "${HAVE_X11}" = "yes"; then
4090 XRANDR_REQUIRED=1.2.2
4091 XRANDR_MODULES="xrandr >= $XRANDR_REQUIRED"
4092 EMACS_CHECK_MODULES([XRANDR], [$XRANDR_MODULES])
4093 if test $HAVE_XRANDR = no; then
4094 # Test old way in case pkg-config doesn't have it (older machines).
4095 # Include Xrender.h by hand to work around bug in older Xrandr.h
4096 # (e.g. RHEL5) and silence (harmless) configure warning (bug#18465).
4097 AC_CHECK_HEADER(X11/extensions/Xrandr.h,
4098 [AC_CHECK_LIB(Xrandr, XRRGetScreenResources, HAVE_XRANDR=yes)],
4099 [], [AC_INCLUDES_DEFAULT
4100 #include <X11/extensions/Xrender.h>])
4101 if test $HAVE_XRANDR = yes; then
4102 XRANDR_LIBS=-lXrandr
4105 if test $HAVE_XRANDR = yes; then
4106 AC_DEFINE(HAVE_XRANDR, 1, [Define to 1 if you have the XRandr extension.])
4109 AC_SUBST(XRANDR_CFLAGS)
4110 AC_SUBST(XRANDR_LIBS)
4112 ### Use Xinerama (-lXinerama) if available
4114 if test "${HAVE_X11}" = "yes"; then
4115 XINERAMA_REQUIRED=1.0.2
4116 XINERAMA_MODULES="xinerama >= $XINERAMA_REQUIRED"
4117 EMACS_CHECK_MODULES([XINERAMA], [$XINERAMA_MODULES])
4118 if test $HAVE_XINERAMA = no; then
4119 # Test old way in case pkg-config doesn't have it (older machines).
4120 AC_CHECK_HEADER(X11/extensions/Xinerama.h,
4121 [AC_CHECK_LIB(Xinerama, XineramaQueryExtension, HAVE_XINERAMA=yes)])
4122 if test $HAVE_XINERAMA = yes; then
4123 XINERAMA_LIBS=-lXinerama
4126 if test $HAVE_XINERAMA = yes; then
4127 AC_DEFINE(HAVE_XINERAMA, 1, [Define to 1 if you have the Xinerama extension.])
4130 AC_SUBST(XINERAMA_CFLAGS)
4131 AC_SUBST(XINERAMA_LIBS)
4133 ### Use Xfixes (-lXfixes) if available
4135 if test "${HAVE_X11}" = "yes"; then
4136 XFIXES_REQUIRED=4.0.0
4137 XFIXES_MODULES="xfixes >= $XFIXES_REQUIRED"
4138 EMACS_CHECK_MODULES([XFIXES], [$XFIXES_MODULES])
4139 if test $HAVE_XFIXES = no; then
4140 # Test old way in case pkg-config doesn't have it (older machines).
4141 AC_CHECK_HEADER(X11/extensions/Xfixes.h,
4142 [AC_CHECK_LIB(Xfixes, XFixesHideCursor, HAVE_XFIXES=yes)])
4143 if test $HAVE_XFIXES = yes; then
4144 XFIXES_LIBS=-lXfixes
4147 if test $HAVE_XFIXES = yes; then
4148 AC_DEFINE(HAVE_XFIXES, 1, [Define to 1 if you have the Xfixes extension.])
4151 AC_SUBST(XFIXES_CFLAGS)
4152 AC_SUBST(XFIXES_LIBS)
4154 ### Use Xdbe (-lXdbe) if available
4156 if test "${HAVE_X11}" = "yes"; then
4157 if test "${with_xdbe}" != "no"; then
4158 AC_CHECK_HEADER(X11/extensions/Xdbe.h,
4159 [AC_CHECK_LIB(Xext, XdbeAllocateBackBufferName, HAVE_XDBE=yes)],
4161 [#include <X11/Xlib.h>
4164 if test $HAVE_XDBE = yes; then
4167 if test $HAVE_XDBE = yes; then
4168 AC_DEFINE(HAVE_XDBE, 1, [Define to 1 if you have the Xdbe extension.])
4171 AC_SUBST(XDBE_CFLAGS)
4174 ### Use libxml (-lxml2) if available
4175 ### mingw32 doesn't use -lxml2, since it loads the library dynamically.
4177 if test "${with_xml2}" != "no"; then
4178 ### I'm not sure what the version number should be, so I just guessed.
4179 EMACS_CHECK_MODULES([LIBXML2], [libxml-2.0 > 2.6.17])
4180 # Built-in libxml2 on OS X 10.8 lacks libxml-2.0.pc.
4181 if test "${HAVE_LIBXML2}" != "yes" && test "$opsys" = "darwin"; then
4182 SAVE_CPPFLAGS="$CPPFLAGS"
4183 if test -z "$xcsdkdir" -a -n "$XCRUN" -a ! -d /usr/include; then
4184 dnl /usr/include is not found. Try Xcode SDK dir if it is sane.
4185 xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
4187 *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
4191 CPPFLAGS="$CPPFLAGS -isystem${xcsdkdir}/usr/include/libxml2"
4192 AC_CHECK_HEADER(libxml/HTMLparser.h,
4193 [AC_CHECK_DECL(HTML_PARSE_RECOVER, HAVE_LIBXML2=yes, ,
4194 [#include <libxml/HTMLparser.h>])])
4195 CPPFLAGS="$SAVE_CPPFLAGS"
4196 if test "${HAVE_LIBXML2}" = "yes"; then
4197 LIBXML2_CFLAGS="-isystem${xcsdkdir}/usr/include/libxml2"
4198 LIBXML2_LIBS="-lxml2"
4201 if test "${HAVE_LIBXML2}" = "yes"; then
4202 if test "${opsys}" != "mingw32"; then
4203 AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no,
4208 if test "${HAVE_LIBXML2}" = "yes"; then
4209 AC_DEFINE(HAVE_LIBXML2, 1, [Define to 1 if you have the libxml library (-lxml2).])
4216 AC_SUBST(LIBXML2_LIBS)
4217 AC_SUBST(LIBXML2_CFLAGS)
4221 if test ! "$with_mailutils"; then
4222 # Check for mail-locking functions in a "mail" library. Probably this should
4223 # have the same check as for liblockfile below.
4224 AC_CHECK_LIB([mail], [maillock], [have_mail=yes], [have_mail=no])
4225 if test $have_mail = yes; then
4227 AC_DEFINE([HAVE_LIBMAIL], [1],
4228 [Define to 1 if you have the 'mail' library (-lmail).])
4231 LIBS="$LIBS_MAIL $LIBS"
4232 AC_CHECK_FUNCS([touchlock])
4235 dnl Debian, at least:
4236 AC_CHECK_LIB([lockfile], [maillock], [have_lockfile=yes], [have_lockfile=no])
4237 if test $have_lockfile = yes; then
4238 LIBS_MAIL=-llockfile
4239 AC_DEFINE([HAVE_LIBLOCKFILE], [1],
4240 [Define to 1 if you have the 'lockfile' library (-llockfile).])
4242 # If we have the shared liblockfile, assume we must use it for mail
4243 # locking (e.g. Debian). If we couldn't link against liblockfile
4244 # (no liblockfile.a installed), ensure that we don't need to.
4245 dnl This works for files generally, not just executables.
4246 dnl Should we look elsewhere for it? Maybe examine /etc/ld.so.conf?
4247 AC_CHECK_PROG([liblockfile], [liblockfile.so], [yes], [no],
4248 [/usr/lib:/lib:/usr/local/lib:$LD_LIBRARY_PATH])
4249 if test "$ac_cv_prog_liblockfile" = yes; then
4250 AC_MSG_ERROR([Shared liblockfile found but can't link against it.
4251 This probably means that movemail could lose mail.
4252 There may be a 'development' package to install containing liblockfile.])
4255 AC_CHECK_HEADERS([maillock.h])
4257 ## Define MAIL_USE_FLOCK (or LOCKF) if the mailer uses flock (or lockf) to
4258 ## interlock access to the mail spool. The alternative is a lock file named
4259 ## /usr/spool/mail/$USER.lock.
4262 aix4-2) mail_lock="lockf" ;;
4264 gnu|freebsd|dragonfly|netbsd|openbsd|darwin) mail_lock="flock" ;;
4266 ## On GNU/Linux systems, both methods are used by various mail programs.
4267 ## I assume most people are using newer mailers that have heard of flock.
4268 ## Change this if you need to.
4269 ## Debian contains a patch which says: "On Debian/GNU/Linux systems,
4270 ## configure gets the right answers, and that means *NOT* using flock.
4271 ## Using flock is guaranteed to be the wrong thing. See Debian Policy
4272 ## for details." and then uses '#ifdef DEBIAN'. Unfortunately the
4273 ## Debian maintainer hasn't provided a clean fix for Emacs.
4274 ## movemail.c will use 'maillock' when MAILDIR, HAVE_LIBMAIL and
4275 ## HAVE_MAILLOCK_H are defined, so the following appears to be the
4276 ## correct logic. -- fx
4277 ## We must check for HAVE_LIBLOCKFILE too, as movemail does.
4278 ## liblockfile is a Free Software replacement for libmail, used on
4279 ## Debian systems and elsewhere. -rfr.
4282 if test $have_mail = yes || test $have_lockfile = yes; then
4283 test $ac_cv_header_maillock_h = yes && mail_lock=no
4287 mail_lock="none-needed" ;;
4291 flock) AC_DEFINE([MAIL_USE_FLOCK], [1],
4292 [Define if the mailer uses flock to interlock the mail spool.]);;
4294 lockf) AC_DEFINE([MAIL_USE_LOCKF], [1],
4295 [Define if the mailer uses lockf to interlock the mail spool.]);;
4299 *) BLESSMAIL_TARGET="need-blessmail" ;;
4302 AC_SUBST([BLESSMAIL_TARGET])
4303 AC_SUBST([LIBS_MAIL])
4307 [linux/seccomp.h linux/filter.h],
4309 [SECCOMP_SET_MODE_FILTER, SECCOMP_FILTER_FLAG_TSYNC],
4310 [HAVE_SECCOMP=yes], [],
4312 #include <linux/seccomp.h>
4314 AC_SUBST([HAVE_SECCOMP])
4316 EMACS_CHECK_MODULES([LIBSECCOMP], [libseccomp >= 2.4.0])
4317 AC_SUBST([HAVE_LIBSECCOMP])
4318 AC_SUBST([LIBSECCOMP_LIBS])
4319 AC_SUBST([LIBSECCOMP_CFLAGS])
4322 LIBS="$LIB_PTHREAD $LIB_MATH $LIBS"
4323 AC_CHECK_FUNCS(accept4 fchdir gethostname \
4324 getrusage get_current_dir_name \
4325 lrand48 random rint trunc \
4326 select getpagesize setlocale newlocale \
4327 getrlimit setrlimit shutdown \
4328 pthread_sigmask strsignal setitimer \
4329 sendto recvfrom getsockname getifaddrs freeifaddrs \
4331 getpwent endpwent getgrent endgrent \
4332 cfmakeraw cfsetspeed __executable_start log2 pthread_setname_np \
4333 pthread_set_name_np)
4336 if test "$ac_cv_func_pthread_setname_np" = "yes"; then
4338 [whether pthread_setname_np takes a single argument],
4339 [emacs_cv_pthread_setname_np_1arg],
4342 [[#include <pthread.h>]],
4343 [[pthread_setname_np ("a");]])],
4344 [emacs_cv_pthread_setname_np_1arg=yes],
4345 [emacs_cv_pthread_setname_np_1arg=no])])
4346 if test "$emacs_cv_pthread_setname_np_1arg" = "yes"; then
4348 HAVE_PTHREAD_SETNAME_NP_1ARG, 1,
4349 [Define to 1 if pthread_setname_np takes a single argument.])
4352 [whether pthread_setname_np takes three arguments],
4353 [emacs_cv_pthread_setname_np_3arg],
4356 [[#include <pthread.h>]],
4357 [[pthread_setname_np (0, "%s", "a");]])],
4358 [emacs_cv_pthread_setname_np_3arg=yes],
4359 [emacs_cv_pthread_setname_np_3arg=no])])
4360 if test "$emacs_cv_pthread_setname_np_3arg" = "yes"; then
4362 HAVE_PTHREAD_SETNAME_NP_3ARG, 1,
4363 [Define to 1 if pthread_setname_np takes three arguments.])
4368 dnl No need to check for posix_memalign if aligned_alloc works.
4369 AC_CHECK_FUNCS([aligned_alloc posix_memalign], [break])
4370 AC_CHECK_DECLS([aligned_alloc], [], [], [[#include <stdlib.h>]])
4372 case $with_unexec,$canonical in
4374 AC_CHECK_DECL([__ELF__], [],
4375 [AC_MSG_ERROR([Non-ELF systems are not supported on this platform.])]);;
4379 AC_CHECK_FUNCS([posix_madvise])
4381 dnl Cannot use AC_CHECK_FUNCS
4382 AC_CACHE_CHECK([for __builtin_frame_address],
4383 [emacs_cv_func___builtin_frame_address],
4384 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_frame_address (0);])],
4385 [emacs_cv_func___builtin_frame_address=yes],
4386 [emacs_cv_func___builtin_frame_address=no])])
4387 if test $emacs_cv_func___builtin_frame_address = yes; then
4388 AC_DEFINE([HAVE___BUILTIN_FRAME_ADDRESS], 1,
4389 [Define to 1 if you have the '__builtin_frame_address' function.])
4391 AC_CACHE_CHECK([for __builtin_unwind_init],
4392 emacs_cv_func___builtin_unwind_init,
4393 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_unwind_init ();])],
4394 emacs_cv_func___builtin_unwind_init=yes,
4395 emacs_cv_func___builtin_unwind_init=no)])
4396 if test $emacs_cv_func___builtin_unwind_init = yes; then
4397 AC_DEFINE(HAVE___BUILTIN_UNWIND_INIT, 1,
4398 [Define to 1 if you have the '__builtin_unwind_init' function.])
4401 AC_CHECK_HEADERS_ONCE(sys/un.h)
4406 AC_CHECK_FUNCS(grantpt)
4408 # PTY-related GNU extensions.
4409 AC_CHECK_FUNCS(getpt posix_openpt)
4411 dnl Run a test program that contains a call to tputs, a call that is
4412 dnl never executed. This tests whether a pre-'main' dynamic linker
4413 dnl works with the library. It's too much trouble to actually call
4414 dnl tputs in the test program, due to portability hassles. When
4415 dnl cross-compiling, assume the test program will run if it links.
4416 AC_DEFUN([tputs_link_source], [
4418 [[extern void tputs (const char *, int, int (*)(int));
4419 int main (int argc, char **argv)
4422 tputs (argv[0], 0, 0);
4426 # Check this now, so that we will NOT find the above functions in ncurses.
4427 # That is because we have not set up to link ncurses in lib-src.
4428 # It's better to believe a function is not available
4429 # than to expect to find it in ncurses.
4430 # Also we need tputs and friends to be able to build at all.
4431 AC_CACHE_CHECK([for library containing tputs], [emacs_cv_tputs_lib],
4432 [if test "${opsys}" = "mingw32"; then
4433 emacs_cv_tputs_lib='none required'
4435 # curses precedes termcap because of AIX (Bug#9736#35) and OpenIndiana.
4436 tputs_libraries='tinfo ncurses terminfo curses termcap tinfow ncursesw'
4437 for tputs_library in '' $tputs_libraries; do
4439 if test -z "$tputs_library"; then
4440 emacs_cv_tputs_lib='none required'
4442 emacs_cv_tputs_lib=-l$tputs_library
4443 LIBS="$emacs_cv_tputs_lib $LIBS"
4445 AC_RUN_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no],
4446 [AC_LINK_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no])])
4448 if test "X$emacs_cv_tputs_lib" != Xno; then
4453 AS_CASE(["$emacs_cv_tputs_lib"],
4454 [no], [AC_MSG_ERROR([The required function 'tputs' was not found in any library.
4455 The following libraries were tried (in order):
4456 libtinfo, libncurses, libterminfo, libcurses, libtermcap
4457 Please try installing whichever of these libraries is most appropriate
4458 for your system, together with its header files.
4459 For example, a libncurses-dev(el) or similar package.])],
4460 [-l*], [LIBS_TERMCAP=$emacs_cv_tputs_lib],
4461 [*], [LIBS_TERMCAP=])
4463 ## Use termcap instead of terminfo?
4464 ## Only true for: freebsd < 40000, ms-w32, msdos, netbsd < 599002500.
4466 ## FIXME? In the cases below where we unconditionally set
4467 ## LIBS_TERMCAP="-lncurses", this overrides LIBS_TERMCAP = -ltinfo,
4468 ## if that was found above to have tputs.
4469 ## Should we use the gnu* logic everywhere?
4471 ## darwin: Prevents crashes when running Emacs in Terminal.app under 10.2.
4472 ## The ncurses library has been moved out of the System framework in
4473 ## Mac OS X 10.2. So if configure detects it, set the command-line
4474 ## option to use it.
4475 darwin) LIBS_TERMCAP="-lncurses" ;;
4477 gnu*) test -z "$LIBS_TERMCAP" && LIBS_TERMCAP="-lncurses" ;;
4480 AC_MSG_CHECKING([whether FreeBSD is new enough to use terminfo])
4481 AC_CACHE_VAL(emacs_cv_freebsd_terminfo,
4482 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <osreldate.h>]],
4483 [[#if __FreeBSD_version < 400000
4486 ]])], emacs_cv_freebsd_terminfo=yes, emacs_cv_freebsd_terminfo=no)])
4488 AC_MSG_RESULT($emacs_cv_freebsd_terminfo)
4490 if test $emacs_cv_freebsd_terminfo = yes; then
4491 LIBS_TERMCAP="-lncurses"
4494 LIBS_TERMCAP="-ltermcap"
4504 if test "x$LIBS_TERMCAP" != "x-lterminfo"; then
4506 LIBS_TERMCAP="-ltermcap"
4510 openbsd | dragonfly) LIBS_TERMCAP="-lncurses" ;;
4512 ## hpux: Make sure we get select from libc rather than from libcurses
4513 ## because libcurses on HPUX 10.10 has a broken version of select.
4514 ## We used to use -lc -lcurses, but this may be cleaner.
4515 ## FIXME? But TERMINFO = yes on hpux (it used to be explicitly
4516 # set that way, now it uses the default). Isn't this a contradiction?
4517 hpux*) LIBS_TERMCAP="-ltermcap" ;;
4521 TERMCAP_OBJ=tparam.o
4522 if test $TERMINFO = yes; then
4523 AC_DEFINE(TERMINFO, 1, [Define to 1 if you use terminfo instead of termcap.])
4524 TERMCAP_OBJ=terminfo.o
4525 AC_CACHE_CHECK([whether $LIBS_TERMCAP library defines BC],
4526 [emacs_cv_terminfo_defines_BC],
4528 LIBS="$LIBS $LIBS_TERMCAP"
4529 AC_LINK_IFELSE([AC_LANG_PROGRAM([[extern char *BC;]], [[return !*BC;]])],
4530 [emacs_cv_terminfo_defines_BC=yes],
4531 [emacs_cv_terminfo_defines_BC=no])
4533 if test "$emacs_cv_terminfo_defines_BC" = yes; then
4534 AC_DEFINE([TERMINFO_DEFINES_BC], 1, [Define to 1 if the
4535 terminfo library defines the variables BC, PC, and UP.])
4538 if test "X$LIBS_TERMCAP" = "X-lncurses"; then
4539 AC_DEFINE(USE_NCURSES, 1, [Define to 1 if you use ncurses.])
4541 AC_SUBST(LIBS_TERMCAP)
4542 AC_SUBST(TERMCAP_OBJ)
4544 # GNU/Linux-specific timer functions.
4545 AC_CACHE_CHECK([for timerfd interface], [emacs_cv_have_timerfd],
4547 [AC_LANG_PROGRAM([[#include <sys/timerfd.h>
4549 [[timerfd_create (CLOCK_REALTIME,
4550 TFD_CLOEXEC | TFD_NONBLOCK);
4551 timerfd_settime (0, TFD_TIMER_ABSTIME, 0, 0);]])],
4552 [emacs_cv_have_timerfd=yes],
4553 [emacs_cv_have_timerfd=no])])
4554 if test "$emacs_cv_have_timerfd" = yes; then
4555 AC_DEFINE([HAVE_TIMERFD], 1,
4556 [Define to 1 if timerfd functions are supported as in GNU/Linux.])
4559 # Alternate stack for signal handlers.
4560 AC_CACHE_CHECK([whether signals can be handled on alternate stack],
4561 [emacs_cv_alternate_stack],
4563 [AC_LANG_PROGRAM([[#include <signal.h>
4566 struct sigaction sa;
4567 ss.ss_sp = malloc (SIGSTKSZ);
4568 ss.ss_size = SIGSTKSZ;
4569 sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
4570 sigaltstack (&ss, 0);
4571 sigaction (SIGSEGV, &sa, 0);]])],
4572 [emacs_cv_alternate_stack=yes],
4573 [emacs_cv_alternate_stack=no])])
4575 # Do we need the Hesiod library to provide the support routines?
4576 dnl FIXME? Should we be skipping this on Darwin too?
4579 if test "$with_hesiod" != no ; then
4580 # Don't set $LIBS here -- see comments above. FIXME which comments?
4582 AC_CHECK_FUNC(res_send, , [AC_CHECK_FUNC(__res_send, ,
4583 [AC_CHECK_LIB(resolv, res_send, resolv=yes,
4584 [AC_CHECK_LIB(resolv, __res_send, resolv=yes)])])])
4585 if test "$resolv" = yes ; then
4591 AC_CHECK_FUNC(hes_getmailhost, , [AC_CHECK_LIB(hesiod, hes_getmailhost,
4592 hesiod=yes, :, $RESOLVLIB)])
4594 if test x"$hesiod" = xyes; then
4596 LIBRESOLV=$RESOLVLIB
4602 # These tell us which Kerberos-related libraries to use.
4609 if test "${with_kerberos}" != no; then
4611 AC_CHECK_LIB(com_err, com_err, have_com_err=yes, have_com_err=no)
4612 if test $have_com_err = yes; then
4613 COM_ERRLIB=-lcom_err
4614 LIBS="$COM_ERRLIB $LIBS"
4616 AC_CHECK_LIB(crypto, mit_des_cbc_encrypt, have_crypto=yes, have_crypto=no)
4617 if test $have_crypto = yes; then
4619 LIBS="$CRYPTOLIB $LIBS"
4621 AC_CHECK_LIB(k5crypto, mit_des_cbc_encrypt, have_k5crypto=yes, have_k5crypto=no)
4622 if test $have_k5crypto = yes; then
4623 CRYPTOLIB=-lk5crypto
4624 LIBS="$CRYPTOLIB $LIBS"
4626 AC_CHECK_LIB(krb5, krb5_init_context, have_krb5=yes, have_krb5=no)
4627 if test $have_krb5=yes; then
4629 LIBS="$KRB5LIB $LIBS"
4631 dnl FIXME Simplify. Does not match 22 logic, thanks to default_off?
4632 if test "${with_kerberos5}" = no; then
4633 AC_CHECK_LIB(des425, des_cbc_encrypt, have_des425=yes, have_des425=no )
4634 if test $have_des425 = yes; then
4636 LIBS="$DESLIB $LIBS"
4638 AC_CHECK_LIB(des, des_cbc_encrypt, have_des=yes, have_des=no)
4639 if test $have_des = yes; then
4641 LIBS="$DESLIB $LIBS"
4644 AC_CHECK_LIB(krb4, krb_get_cred, have_krb4=yes, have_krb4=no)
4645 if test $have_krb4 = yes; then
4647 LIBS="$KRB4LIB $LIBS"
4649 AC_CHECK_LIB(krb, krb_get_cred, have_krb=yes, have_krb=no)
4650 if test $have_krb = yes; then
4652 LIBS="$KRB4LIB $LIBS"
4657 if test "${with_kerberos5}" != no; then
4658 AC_CHECK_HEADERS(krb5.h,
4659 [AC_CHECK_MEMBERS([krb5_error.text, krb5_error.e_text],,,
4660 [#include <krb5.h>])])
4662 AC_CHECK_HEADERS(krb.h,,
4663 [AC_CHECK_HEADERS(kerberosIV/krb.h,,
4664 [AC_CHECK_HEADERS(kerberos/krb.h)])])
4666 AC_CHECK_HEADERS(com_err.h)
4670 AC_SUBST(COM_ERRLIB)
4676 AC_CHECK_HEADERS(valgrind/valgrind.h)
4678 AC_CHECK_MEMBERS([struct unipair.unicode], [], [], [[#include <linux/kd.h>]])
4680 AC_CHECK_FUNCS_ONCE([__lsan_ignore_object sbrk])
4684 dnl AC_CHECK_FUNCS_ONCE wouldn’t be right for snprintf, which needs
4685 dnl the current CFLAGS etc.
4686 AC_CHECK_FUNCS(snprintf)
4688 dnl Check for glib. This differs from other library checks in that
4689 dnl Emacs need not link to glib unless some other library is already
4690 dnl linking to glib. Although glib provides no facilities that Emacs
4691 dnl needs for its own purposes, when glib is present Emacs needs to
4692 dnl use primitives like g_main_context_query to avoid clashing with
4693 dnl glib at a low level.
4695 dnl Check this late, since it depends on $GTK_CFLAGS etc.
4697 AC_CACHE_CHECK([whether GLib is linked in], [emacs_cv_links_glib],
4698 [OLDCFLAGS="$CFLAGS"
4700 CFLAGS="$CFLAGS $GTK_CFLAGS $RSVG_CFLAGS $DBUS_CFLAGS $SETTINGS_CFLAGS"
4701 LIBS="$LIBS $GTK_LIBS $RSVG_LIBS $DBUS_LIBS $SETTINGS_LIBS"
4702 CFLAGS="$CFLAGS $NOTIFY_CFLAGS $CAIRO_CFLAGS"
4703 LIBS="$LIBS $NOTIFY_LIBS $CAIRO_LIBS"
4704 AC_LINK_IFELSE([AC_LANG_PROGRAM(
4707 [[g_print ("Hello world");]])],
4708 [emacs_cv_links_glib=yes],
4709 [emacs_cv_links_glib=no])
4712 if test "${emacs_cv_links_glib}" = "yes"; then
4713 AC_DEFINE(HAVE_GLIB, 1, [Define to 1 if GLib is linked in.])
4714 if test "$HAVE_NS" = no;then
4720 dnl Adapted from Haible's version.
4721 AC_CACHE_CHECK([for nl_langinfo and CODESET], [emacs_cv_langinfo_codeset],
4722 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
4723 [[char *cs = nl_langinfo(CODESET);]])],
4724 [emacs_cv_langinfo_codeset=yes],
4725 [emacs_cv_langinfo_codeset=no])
4727 if test "$emacs_cv_langinfo_codeset" = yes; then
4728 AC_DEFINE([HAVE_LANGINFO_CODESET], 1,
4729 [Define if you have <langinfo.h> and nl_langinfo (CODESET).])
4731 AC_CACHE_CHECK([for nl_langinfo and _NL_PAPER_WIDTH],
4732 [emacs_cv_langinfo__nl_paper_width],
4733 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
4734 [[char *cs = nl_langinfo (_NL_PAPER_WIDTH);]])],
4735 [emacs_cv_langinfo__nl_paper_width=yes],
4736 [emacs_cv_langinfo__nl_paper_width=no])
4738 if test "$emacs_cv_langinfo__nl_paper_width" = yes; then
4739 AC_DEFINE([HAVE_LANGINFO__NL_PAPER_WIDTH], 1,
4740 [Define if you have <langinfo.h> and nl_langinfo (_NL_PAPER_WIDTH).])
4746 dnl Fixme: AC_SYS_POSIX_TERMIOS should probably be used, but it's not clear
4747 dnl how the tty code is related to POSIX and/or other versions of termios.
4748 dnl The following looks like a useful start.
4750 dnl AC_SYS_POSIX_TERMIOS
4751 dnl if test $ac_cv_sys_posix_termios = yes; then
4752 dnl AC_DEFINE(HAVE_TERMIOS, 1, [Define to 1 if you have POSIX-style functions
4753 dnl and macros for terminal control.])
4754 dnl AC_DEFINE(HAVE_TCATTR, 1, [Define to 1 if you have tcgetattr and tcsetattr.])
4757 dnl Turned on June 1996 supposing nobody will mind it.
4758 dnl MinGW emulates passwd database, so this feature doesn't make sense there.
4759 if test "${opsys}" != "mingw32"; then
4760 AC_DEFINE(AMPERSAND_FULL_NAME, 1, [Define to use the convention that &
4761 in the full name stands for the login id.])
4764 dnl Everybody supports this, except MS.
4765 dnl Seems like the kind of thing we should be testing for, though.
4766 ## Note: PTYs are broken on darwin <6. Use at your own risk.
4767 if test "${opsys}" != "mingw32"; then
4768 AC_DEFINE(HAVE_PTYS, 1, [Define if the system supports pty devices.])
4771 dnl Everybody supports this, except MS-DOS.
4772 dnl Seems like the kind of thing we should be testing for, though.
4773 AC_DEFINE(HAVE_SOCKETS, 1, [Define if the system supports
4774 4.2-compatible sockets.])
4776 AH_TEMPLATE(INTERNAL_TERMINAL, [This is substituted when $TERM is "internal".])
4778 AH_TEMPLATE(NULL_DEVICE, [Name of the file to open to get
4779 a null file, or a data sink.])
4780 if test "${opsys}" = "mingw32"; then
4781 AC_DEFINE(NULL_DEVICE, ["NUL:"])
4783 AC_DEFINE(NULL_DEVICE, ["/dev/null"])
4786 if test "${opsys}" = "mingw32"; then
4791 AC_DEFINE_UNQUOTED(SEPCHAR, ['$SEPCHAR'], [Character that separates PATH elements.])
4792 dnl This is for MinGW, and is used in test/Makefile.in.
4793 dnl The MSYS Bash has heuristics for replacing ':' with ';' when it
4794 dnl decides that a command-line argument to be passed to a MinGW program
4795 dnl is a PATH-style list of directories. But that heuristics plays it
4796 dnl safe, and only does the replacement when it is _absolutely_ sure it
4797 dnl sees a colon-separated list of file names; e.g. ":." is left alone,
4798 dnl which breaks in-tree builds. So we do this manually instead.
4799 dnl Note that we cannot rely on PATH_SEPARATOR, as that one will always
4800 dnl be computed as ':' in MSYS Bash.
4803 dnl Everybody supports this, except MS-DOS.
4804 AC_DEFINE(subprocesses, 1, [Define to enable asynchronous subprocesses.])
4806 AC_DEFINE(USER_FULL_NAME, [pw->pw_gecos], [How to get a user's full name.])
4809 AC_DEFINE(DIRECTORY_SEP, ['/'],
4810 [Character that separates directories in a file name.])
4812 if test "${opsys}" = "mingw32"; then
4813 AC_DEFINE(IS_DEVICE_SEP(_c_), [((_c_) == ':')],
4814 [Returns true if character is a device separator.])
4816 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == '/' || (_c_) == '\\')],
4817 [Returns true if character is a directory separator.])
4819 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP(_c_))],
4820 [Returns true if character is any form of separator.])
4822 AC_DEFINE(IS_DEVICE_SEP(_c_), 0,
4823 [Returns true if character is a device separator.])
4825 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == DIRECTORY_SEP)],
4826 [Returns true if character is a directory separator.])
4828 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_))],
4829 [Returns true if character is any form of separator.])
4832 if test "$USE_X_TOOLKIT" != "none"; then
4836 dnl Assar Westerlund <assar@sics.se> says this is necessary
4837 dnl for HP-UX 10.20, and that it works for HP-UX 0 as well.
4841 if test "$have_editres" != no && test ! -z "$LIBXMU"; then
4843 dnl See libXmu.a check above.
4844 if test x$HAVE_X11XTR6 = xyes; then
4845 LIBS="-lXt -lSM -lICE $LIBXMU"
4847 OTHERLIBS="-lXt -$LIBXMU"
4849 AC_LINK_IFELSE([AC_LANG_PROGRAM(
4850 [[#include <X11/Intrinsic.h>
4851 #include <X11/Xmu/Editres.h>]],
4852 [[_XEditResCheckMessages (0, 0, 0, 0);]])],
4853 [AC_DEFINE([X_TOOLKIT_EDITRES], 1,
4854 [Define to 1 if we should use XEditRes.])])
4860 solaris | unixware )
4861 dnl Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
4862 dnl instead, there's a system variable _sys_nsig. Unfortunately, we
4863 dnl need the constant to dimension an array. So wire in the appropriate
4865 AC_DEFINE(NSIG_MINIMUM, 32, [Minimum value of NSIG.])
4869 emacs_broken_SIGIO=no
4872 dnl SIGIO exists, but the feature doesn't work in the way Emacs needs.
4873 hpux* | nacl | openbsd | solaris | unixware )
4874 emacs_broken_SIGIO=yes
4878 dnl On AIX Emacs uses the gmalloc.c malloc implementation. But given
4879 dnl the way this system works, libc functions that return malloced
4880 dnl memory use the libc malloc implementation. Calling xfree or
4881 dnl xrealloc on the results of such functions results in a crash.
4883 dnl One solution for this could be to define SYSTEM_MALLOC in configure,
4884 dnl but that does not currently work on this system.
4886 dnl It is possible to completely override the malloc implementation on
4887 dnl AIX, but that involves putting the malloc functions in a shared
4888 dnl library and setting the MALLOCTYPE environment variable to point to
4889 dnl that shared library.
4891 dnl Emacs currently calls xrealloc on the results of get_current_dir name,
4892 dnl to avoid a crash just use the Emacs implementation for that function.
4894 dnl FIXME We could change the AC_CHECK_FUNCS call near the start
4895 dnl of this file, so that we do not check for get_current_dir_name
4896 dnl on AIX. But that might be fragile if something else ends
4897 dnl up testing for get_current_dir_name as a dependency.
4898 AC_DEFINE(BROKEN_GET_CURRENT_DIR_NAME, 1, [Define if
4899 get_current_dir_name should not be used.])
4903 dnl Circumvent a bug in FreeBSD. In the following sequence of
4904 dnl writes/reads on a PTY, read(2) returns bogus data:
4906 dnl write(2) 1022 bytes
4907 dnl write(2) 954 bytes, get EAGAIN
4908 dnl read(2) 1024 bytes in process_read_output
4909 dnl read(2) 11 bytes in process_read_output
4911 dnl That is, read(2) returns more bytes than have ever been written
4912 dnl successfully. The 1033 bytes read are the 1022 bytes written
4913 dnl successfully after processing (for example with CRs added if the
4914 dnl terminal is set up that way which it is here). The same bytes will
4915 dnl be seen again in a later read(2), without the CRs.
4916 AC_DEFINE(BROKEN_PTY_READ_AFTER_EAGAIN, 1, [Define on FreeBSD to
4917 work around an issue when reading from a PTY.])
4923 dnl FIXME Can't we test if this exists (eg /proc/$$)?
4924 AC_DEFINE(HAVE_PROCFS, 1, [Define if you have the /proc filesystem.])
4929 darwin | dragonfly | freebsd | netbsd | openbsd )
4930 AC_DEFINE(DONT_REOPEN_PTY, 1, [Define if process.c does not need to
4931 close a pty to make it a controlling terminal (it is already a
4932 controlling terminal of the subprocess, because we did ioctl TIOCSCTTY).])
4936 dnl FIXME Surely we can test for this rather than hard-code it.
4938 netbsd | openbsd) sound_device="/dev/audio" ;;
4939 *) sound_device="/dev/dsp" ;;
4943 AC_DEFINE_UNQUOTED(DEFAULT_SOUND_DEVICE, "$sound_device",
4944 [Name of the default sound device.])
4947 dnl Emacs can read input using SIGIO and buffering characters itself,
4948 dnl or using CBREAK mode and making C-g cause SIGINT.
4949 dnl The choice is controlled by the variable interrupt_input.
4951 dnl Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
4953 dnl Emacs uses the presence of the USABLE_SIGIO macro
4954 dnl to indicate whether or not signal-driven I/O is possible. It uses
4955 dnl INTERRUPT_INPUT to decide whether to use it by default.
4957 dnl SIGIO can be used only on systems that implement it (4.2 and 4.3).
4958 dnl CBREAK mode has two disadvantages
4959 dnl 1) At least in 4.2, it is impossible to handle the Meta key properly.
4960 dnl I hear that in system V this problem does not exist.
4961 dnl 2) Control-G causes output to be discarded.
4962 dnl I do not know whether this can be fixed in system V.
4964 dnl Another method of doing input is planned but not implemented.
4965 dnl It would have Emacs fork off a separate process
4966 dnl to read the input and send it to the true Emacs process
4969 darwin | gnu-linux | gnu-kfreebsd )
4970 AC_DEFINE(INTERRUPT_INPUT, 1, [Define to read input using SIGIO.])
4975 dnl If the system's imake configuration file defines 'NeedWidePrototypes'
4976 dnl as 'NO', we must define NARROWPROTO manually. Such a define is
4977 dnl generated in the Makefile generated by 'xmkmf'. If we don't define
4978 dnl NARROWPROTO, we will see the wrong function prototypes for X functions
4979 dnl taking float or double parameters.
4981 cygwin|gnu|gnu-linux|gnu-kfreebsd|freebsd|netbsd|openbsd)
4982 AC_DEFINE(NARROWPROTO, 1, [Define if system's imake configuration
4983 file defines 'NeedWidePrototypes' as 'NO'.])
4988 dnl Used in process.c, this must be a loop, even if it only runs once.
4989 AH_TEMPLATE(PTY_ITERATION, [How to iterate over PTYs.])
4990 dnl Only used if !PTY_ITERATION. Iterate from FIRST_PTY_LETTER to z,
4991 dnl trying suffixes 0-16.
4992 AH_TEMPLATE(FIRST_PTY_LETTER, [Letter to use in finding device name of
4993 first PTY, if PTYs are supported.])
4994 AH_TEMPLATE(PTY_OPEN, [How to open a PTY, if non-standard.])
4995 AH_TEMPLATE(PTY_NAME_SPRINTF, [How to get the device name of the control
4996 end of a PTY, if non-standard.])
4997 AH_TEMPLATE(PTY_TTY_NAME_SPRINTF, [How to get device name of the tty
4998 end of a PTY, if non-standard.])
5002 AC_DEFINE(PTY_ITERATION, [int c; for (c = 0; !c ; c++)])
5003 dnl You allocate a pty by opening /dev/ptc to get the master side.
5004 dnl To get the name of the slave side, you just ttyname() the master side.
5005 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptc");])
5006 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [strcpy (pty_name, ttyname (fd));])
5010 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
5011 dnl multi-line AC_DEFINEs are hard. :(
5012 AC_DEFINE(PTY_OPEN, [ do { int dummy; sigset_t blocked, procmask; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, &procmask); if (-1 == openpty (&fd, &dummy, pty_name, 0, 0)) fd = -1; pthread_sigmask (SIG_SETMASK, &procmask, 0); if (fd >= 0) emacs_close (dummy); } while (false)])
5013 AC_DEFINE(PTY_NAME_SPRINTF, [])
5014 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
5018 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
5021 gnu-linux | gnu-kfreebsd | dragonfly | freebsd | openbsd | netbsd | darwin | nacl )
5023 if test "x$ac_cv_func_grantpt" = xyes; then
5024 AC_DEFINE(UNIX98_PTYS, 1, [Define if the system has Unix98 PTYs.])
5025 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
5026 dnl Note that grantpt and unlockpt may fork. We must block SIGCHLD
5027 dnl to prevent sigchld_handler from intercepting the child's death.
5028 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptyname = 0; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); if (grantpt (fd) != -1 && unlockpt (fd) != -1) ptyname = ptsname(fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (!ptyname) { emacs_close (fd); return -1; } snprintf (pty_name, PTY_NAME_SIZE, "%s", ptyname); }])
5029 dnl if HAVE_POSIX_OPENPT
5030 if test "x$ac_cv_func_posix_openpt" = xyes; then
5031 AC_DEFINE(PTY_OPEN, [do { fd = posix_openpt (O_RDWR | O_CLOEXEC | O_NOCTTY); if (fd < 0 && errno == EINVAL) fd = posix_openpt (O_RDWR | O_NOCTTY); } while (false)])
5032 AC_DEFINE(PTY_NAME_SPRINTF, [])
5034 elif test "x$ac_cv_func_getpt" = xyes; then
5035 AC_DEFINE(PTY_OPEN, [fd = getpt ()])
5036 AC_DEFINE(PTY_NAME_SPRINTF, [])
5038 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
5041 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
5046 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
5047 AC_DEFINE(PTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/ptym/pty%c%x", c, i);])
5048 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/pty/tty%c%x", c, i);])
5052 dnl On SysVr4, grantpt(3) forks a subprocess, so do not use
5053 dnl O_CLOEXEC when opening the pty, and keep the SIGCHLD handler
5054 dnl from intercepting that death. If any child but grantpt's should die
5055 dnl within, it should be caught after sigrelse(2).
5056 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
5057 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptsname (int), *ptyname; int grantpt_result; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); grantpt_result = grantpt (fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (grantpt_result == -1 || unlockpt (fd) == -1 || !(ptyname = ptsname (fd))) { emacs_close (fd); return -1; } snprintf (pty_name, PTY_NAME_SIZE, "%s", ptyname); }])
5061 dnl Comments are as per solaris.
5062 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
5063 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptsname (int), *ptyname; int grantpt_result; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); grantpt_result = grantpt (fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (grantpt_result == -1) fatal("could not grant slave pty"); if (unlockpt(fd) == -1) fatal("could not unlock slave pty"); if (!(ptyname = ptsname(fd))) fatal ("could not enable slave pty"); snprintf (pty_name, PTY_NAME_SIZE, "%s", ptyname); }])
5069 solaris | unixware )
5070 dnl This change means that we don't loop through allocate_pty too
5071 dnl many times in the (rare) event of a failure.
5072 AC_DEFINE(FIRST_PTY_LETTER, ['z'])
5073 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
5074 dnl Push various streams modules onto a PTY channel. Used in process.c.
5075 AC_DEFINE(SETUP_SLAVE_PTY, [if (ioctl (std_in, I_PUSH, "ptem") == -1) fatal ("ioctl I_PUSH ptem"); if (ioctl (std_in, I_PUSH, "ldterm") == -1) fatal ("ioctl I_PUSH ldterm"); if (ioctl (std_in, I_PUSH, "ttcompat") == -1) fatal ("ioctl I_PUSH ttcompat");], [How to set up a slave PTY, if needed.])
5080 AH_TEMPLATE(SIGNALS_VIA_CHARACTERS, [Make process_send_signal work by
5081 "typing" a signal character on the pty.])
5084 dnl Perry Smith <pedz@ddivt1.austin.ibm.com> says this is correct for AIX.
5085 aix4-2 | cygwin | gnu | dragonfly | freebsd | netbsd | openbsd | darwin )
5086 AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
5089 dnl 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works.
5090 dnl FIXME Does gnu-kfreebsd have linux/version.h? It seems unlikely...
5091 gnu-linux | gnu-kfreebsd )
5093 AC_CACHE_CHECK([for signals via characters], [emacs_cv_signals_via_chars],
5094 [AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
5095 #include <linux/version.h>
5096 #if LINUX_VERSION_CODE < 0x20400
5097 # error "Linux version too old"
5099 ]], [[]])], emacs_cv_signals_via_chars=yes, emacs_cv_signals_via_chars=no)])
5101 test "$emacs_cv_signals_via_chars" = yes && AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
5106 AH_TEMPLATE(TAB3, [Undocumented.])
5109 darwin) AC_DEFINE(TAB3, OXTABS) ;;
5111 gnu | dragonfly | freebsd | netbsd | openbsd )
5112 AC_DEFINE(TABDLY, OXTABS, [Undocumented.])
5113 AC_DEFINE(TAB3, OXTABS)
5116 gnu-linux | gnu-kfreebsd )
5117 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
5121 ]], [[]])], AC_DEFINE(GC_MARK_SECONDARY_STACK(),
5122 [do { extern void *__libc_ia64_register_backing_store_base; __builtin_ia64_flushrs (); mark_memory (__libc_ia64_register_backing_store_base, __builtin_ia64_bsp ());} while (false)],
5123 [Mark a secondary stack, like the register stack on the ia64.]), [])
5127 AC_DEFINE(RUN_TIME_REMAP, 1, [Define if emacs.c needs to call
5128 run_time_remap; for HPUX.])
5133 dnl This won't be used automatically yet. We also need to know, at least,
5134 dnl that the stack is continuous.
5135 AH_TEMPLATE(GC_SETJMP_WORKS, [Define if setjmp is known to save all
5136 registers relevant for conservative garbage collection in the jmp_buf.])
5140 dnl Not all the architectures are tested, but there are Debian packages
5141 dnl for SCM and/or Guile on them, so the technique must work. See also
5142 dnl comments in alloc.c concerning setjmp and gcc.
5143 dnl Fixme: it's probably safe to just use the GCC conditional below.
5144 gnu-linux | gnu-kfreebsd )
5145 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
5146 #if defined __i386__ || defined __sparc__ || defined __mc68000__ \
5147 || defined __alpha__ || defined __mips__ || defined __s390__ \
5148 || defined __arm__ || defined __powerpc__ || defined __amd64__ \
5149 || defined __ia64__ || defined __sh__
5152 # error "setjmp not known to work on this arch"
5154 ]], [[]])], AC_DEFINE(GC_SETJMP_WORKS, 1))
5159 if test x$GCC = xyes; then
5160 dnl GC_SETJMP_WORKS is nearly always appropriate for GCC.
5161 AC_DEFINE(GC_SETJMP_WORKS, 1)
5164 aix* | dragonfly | freebsd | netbsd | openbsd | solaris )
5165 AC_DEFINE(GC_SETJMP_WORKS, 1)
5170 dnl In a weird quirk, MS runtime uses _setjmp and longjmp.
5171 AC_CACHE_CHECK([for _setjmp], [emacs_cv_func__setjmp],
5174 [[#include <setjmp.h>
5176 # define _longjmp longjmp
5181 _longjmp (j, 1);]])],
5182 [emacs_cv_func__setjmp=yes],
5183 [emacs_cv_func__setjmp=no])])
5184 if test $emacs_cv_func__setjmp = yes; then
5185 AC_DEFINE([HAVE__SETJMP], 1, [Define to 1 if _setjmp and _longjmp work.])
5188 # We need to preserve signal mask to handle C stack overflows.
5189 AC_CACHE_CHECK([for sigsetjmp], [emacs_cv_func_sigsetjmp],
5192 [[#include <setjmp.h>
5195 if (! sigsetjmp (j, 1))
5196 siglongjmp (j, 1);]])],
5197 [emacs_cv_func_sigsetjmp=yes],
5198 [emacs_cv_func_sigsetjmp=no])])
5199 if test $emacs_cv_func_sigsetjmp = yes; then
5200 AC_DEFINE([HAVE_SIGSETJMP], 1,
5201 [Define to 1 if sigsetjmp and siglongjmp work.])
5204 case $emacs_cv_func_sigsetjmp,$emacs_cv_alternate_stack,$opsys in
5205 yes,yes,* | *,*,mingw32)
5206 AC_DEFINE([HAVE_STACK_OVERFLOW_HANDLING], 1,
5207 [Define to 1 if C stack overflow can be handled in some cases.]);;
5211 solaris | unixware )
5212 dnl TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
5213 dnl subprocesses the usual way. But TIOCSIGNAL does work for PTYs,
5214 dnl and this is all we need.
5215 AC_DEFINE(TIOCSIGSEND, TIOCSIGNAL, [Some platforms redefine this.])
5222 dnl Used in xfaces.c.
5223 AC_DEFINE(XOS_NEEDS_TIME_H, 1, [Compensate for a bug in Xos.h on
5224 some systems, where it requires time.h.])
5229 dnl Define symbols to identify the version of Unix this is.
5230 dnl Define all the symbols that apply correctly.
5231 AH_TEMPLATE(DOS_NT, [Define if the system is MS DOS or MS Windows.])
5232 AH_TEMPLATE(MSDOS, [Define if the system is MS DOS.])
5233 AH_TEMPLATE(USG, [Define if the system is compatible with System III.])
5234 AH_TEMPLATE(USG5_4, [Define if the system is compatible with System V Release 4.])
5239 dnl This symbol should be defined on AIX Version 3 ???????
5240 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
5242 # error "_AIX not defined"
5244 ]], [[]])], [], AC_DEFINE(_AIX, [], [Define if the system is AIX.]))
5248 AC_DEFINE(CYGWIN, 1, [Define if the system is Cygwin.])
5252 dnl Not __APPLE__, as this may not be defined on non-macOS Darwin.
5253 dnl Not DARWIN, because Panther and lower CoreFoundation.h use DARWIN to
5254 dnl distinguish macOS from pure Darwin.
5255 AC_DEFINE(DARWIN_OS, [], [Define if the system is Darwin.])
5258 gnu-linux | gnu-kfreebsd )
5260 AC_DEFINE(GNU_LINUX, [], [Define if ths system is compatible with GNU/Linux.])
5265 AC_DEFINE(HPUX, [], [Define if the system is HPUX.])
5269 AC_DEFINE(DOS_NT, [])
5270 AC_DEFINE(WINDOWSNT, 1, [Define if compiling for native MS Windows.])
5271 if test "x$ac_enable_checking" != "x" ; then
5272 AC_DEFINE(EMACSDEBUG, 1, [Define to 1 to enable w32 debug facilities.])
5278 AC_DEFINE(USG5_4, [])
5279 AC_DEFINE(SOLARIS2, [], [Define if the system is Solaris.])
5284 AC_DEFINE(USG5_4, [])
5288 AC_CACHE_CHECK([for usable FIONREAD], [emacs_cv_usable_FIONREAD],
5291 dnl BUILD 9008 - FIONREAD problem still exists in X-Windows.
5292 emacs_cv_usable_FIONREAD=no
5296 emacs_cv_usable_FIONREAD=yes
5301 [AC_LANG_PROGRAM([[#include <sys/types.h>
5302 #include <sys/ioctl.h>
5304 # include <sys/filio.h>
5307 [[int foo = ioctl (0, FIONREAD, &foo);]])],
5308 [emacs_cv_usable_FIONREAD=yes],
5309 [emacs_cv_usable_FIONREAD=no])
5312 if test $emacs_cv_usable_FIONREAD = yes; then
5313 AC_DEFINE([USABLE_FIONREAD], [1], [Define to 1 if FIONREAD is usable.])
5315 if test $emacs_broken_SIGIO = no; then
5316 AC_CACHE_CHECK([for usable SIGIO], [emacs_cv_usable_SIGIO],
5318 [AC_LANG_PROGRAM([[#include <fcntl.h>
5321 [[int foo = SIGIO | F_SETFL | FASYNC;]])],
5322 [emacs_cv_usable_SIGIO=yes],
5323 [emacs_cv_usable_SIGIO=no])],
5324 [emacs_cv_usable_SIGIO=yes],
5325 [emacs_cv_usable_SIGIO=no])
5326 if test $emacs_cv_usable_SIGIO = yes; then
5327 AC_DEFINE([USABLE_SIGIO], [1], [Define to 1 if SIGIO is usable.])
5334 dnl It works to open the pty's tty in the parent (Emacs), then
5335 dnl close and reopen it in the child.
5336 AC_DEFINE(USG_SUBTTY_WORKS, 1, [Define for USG systems where it
5337 works to open a pty's tty in the parent process, then close and
5338 reopen it in the child.])
5342 AC_DEFINE(_STRUCTURED_PROC, 1, [Needed for system_process_attributes
5347 # Set up the CFLAGS for real compilation, so we can substitute it.
5348 CFLAGS="$REAL_CFLAGS"
5349 CPPFLAGS="$REAL_CPPFLAGS"
5352 ## Hack to detect a buggy GCC version.
5353 if test "$GCC" = yes && \
5354 $CC --version 2> /dev/null | grep 'gcc.* 4.5.0' >/dev/null; then
5356 *-fno-optimize-sibling-calls*) ;;
5358 AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS.]);;
5362 version=$PACKAGE_VERSION
5364 copyright="Copyright (C) 2021 Free Software Foundation, Inc."
5365 AC_DEFINE_UNQUOTED(COPYRIGHT, ["$copyright"],
5366 [Short copyright string for this version of Emacs.])
5369 ### Specify what sort of things we'll be editing into Makefile and config.h.
5370 ### Use configuration here uncanonicalized to avoid exceeding size limits.
5372 AC_SUBST(configuration)
5377 AC_SUBST(exec_prefix)
5380 AC_SUBST(sharedstatedir)
5381 AC_SUBST(libexecdir)
5384 AC_SUBST(lispdirrel)
5386 AC_SUBST(standardlisppath)
5387 AC_SUBST(locallisppath)
5389 AC_SUBST(x_default_search_path)
5391 AC_SUBST(archlibdir)
5397 ## FIXME? Nothing uses @LD_SWITCH_X_SITE@.
5398 ## src/Makefile.in did add LD_SWITCH_X_SITE (as a cpp define) to the
5399 ## end of LIBX_BASE, but nothing ever set it.
5400 AC_SUBST(LD_SWITCH_X_SITE)
5401 AC_SUBST(C_SWITCH_X_SITE)
5402 AC_SUBST(GNUSTEP_CFLAGS)
5404 ## Used in lwlib/Makefile.in.
5405 AC_SUBST(X_TOOLKIT_TYPE)
5407 AC_SUBST(ns_appbindir)
5408 AC_SUBST(ns_appresdir)
5410 AC_SUBST(GNU_OBJC_CFLAGS)
5411 AC_SUBST(OTHER_FILES)
5413 if test -n "${term_header}"; then
5414 AC_DEFINE_UNQUOTED(TERM_HEADER, "${term_header}",
5415 [Define to the header for the built-in window system.])
5418 AC_DEFINE_UNQUOTED(EMACS_CONFIGURATION, "${canonical}",
5419 [Define to the canonical Emacs configuration name.])
5420 AC_DEFINE_UNQUOTED(EMACS_CONFIG_OPTIONS, "${emacs_config_options}",
5421 [Define to the options passed to configure.])
5426 if test "${HAVE_X_WINDOWS}" = "yes" ; then
5427 AC_DEFINE(HAVE_X_WINDOWS, 1,
5428 [Define to 1 if you want to use the X window system.])
5430 XOBJ="xterm.o xfns.o xselect.o xrdb.o xsmfns.o xsettings.o"
5432 if test "$HAVE_CAIRO" = "yes"; then
5433 FONT_OBJ="$FONT_OBJ ftfont.o ftcrfont.o"
5434 elif test "$HAVE_XFT" = "yes"; then
5435 FONT_OBJ="$FONT_OBJ ftfont.o xftfont.o"
5436 elif test "$HAVE_FREETYPE" = "yes"; then
5437 FONT_OBJ="$FONT_OBJ ftfont.o"
5440 if test "${HAVE_HARFBUZZ}" = "yes" ; then
5441 FONT_OBJ="$FONT_OBJ hbfont.o"
5450 if test "${USE_X_TOOLKIT}" != "none" ; then
5452 AC_DEFINE(USE_X_TOOLKIT, 1, [Define to 1 if using an X toolkit.])
5453 if test "${USE_X_TOOLKIT}" = "LUCID"; then
5454 AC_DEFINE(USE_LUCID, 1, [Define to 1 if using the Lucid X toolkit.])
5455 elif test "${USE_X_TOOLKIT}" = "MOTIF"; then
5456 AC_DEFINE(USE_MOTIF, 1, [Define to 1 if using the Motif X toolkit.])
5460 ## Paul Abrahams <abrahams at equinox.shaysnet.com> says this is needed.
5461 MOTIF_LIBW="$MOTIF_LIBW -lXpm"
5465 ## Richard Anthony Ryan <ryanr at ellingtn.ftc.nrcs.usda.gov>
5466 ## says -lXimp is needed in UNIX_SV ... 4.2 1.1.2.
5467 MOTIF_LIBW="MOTIF_LIBW -lXimp"
5471 ## olson@mcs.anl.gov says -li18n is needed by -lXm.
5472 MOTIF_LIBW="$MOTIF_LIBW -li18n"
5475 MOTIF_LIBW="$MOTIF_LIBW $LIBXP"
5478 AC_SUBST(WIDGET_OBJ)
5481 case "$USE_X_TOOLKIT" in
5482 MOTIF) TOOLKIT_LIBW="$MOTIF_LIBW" ;;
5483 LUCID) TOOLKIT_LIBW="$LUCID_LIBW" ;;
5484 none) test "x$HAVE_GTK" = "xyes" && TOOLKIT_LIBW="$GTK_LIBS" ;;
5486 if test "$HAVE_XWIDGETS" = "yes"; then
5487 TOOLKIT_LIBW="$TOOLKIT_LIBW -lXcomposite"
5489 AC_SUBST(TOOLKIT_LIBW)
5491 if test "${opsys}" != "mingw32"; then
5492 if test "$USE_X_TOOLKIT" = "none"; then
5493 LIBXT_OTHER="\$(LIBXSM)"
5495 LIBXT_OTHER="\$(LIBXMU) -lXt \$(LIBXTR6) -lXext"
5498 AC_SUBST(LIBXT_OTHER)
5500 if test "${HAVE_X11}" = "yes" ; then
5501 AC_DEFINE(HAVE_X11, 1,
5502 [Define to 1 if you want to use version 11 of X windows.])
5503 LIBX_OTHER="\$(LIBXT) \$(LIBX_EXTRA)"
5507 AC_SUBST(LIBX_OTHER)
5510 if test "$HAVE_GTK" = yes || test "$HAVE_X11" != yes; then
5512 elif test "$USE_X_TOOLKIT" = none; then
5514 LIBXMENU='$(oldXMenudir)/libXMenu11.a'
5515 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS oldXMenu"
5517 LIBXMENU='$(lwlibdir)/liblw.a'
5518 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS lwlib"
5522 AC_CACHE_CHECK([for struct alignment],
5523 [emacs_cv_struct_alignment],
5525 [AC_LANG_PROGRAM([[#include <stddef.h>
5526 struct s { char c; } __attribute__ ((aligned (8)));
5527 struct t { char c; struct s s; };
5528 char verify[offsetof (struct t, s) == 8 ? 1 : -1];
5530 [emacs_cv_struct_alignment=yes],
5531 [emacs_cv_struct_alignment=no])])
5532 if test "$emacs_cv_struct_alignment" = yes; then
5533 AC_DEFINE([HAVE_STRUCT_ATTRIBUTE_ALIGNED], 1,
5534 [Define to 1 if 'struct __attribute__ ((aligned (N)))' aligns the
5535 structure to an N-byte boundary.])
5540 AC_CACHE_CHECK([for statement expressions],
5541 [emacs_cv_statement_expressions],
5543 [AC_LANG_PROGRAM([], [[return ({ int x = 5; x-x; });]])],
5544 [emacs_cv_statement_expressions=yes],
5545 [emacs_cv_statement_expressions=no])])
5546 if test "$emacs_cv_statement_expressions" = yes; then
5547 AC_DEFINE([HAVE_STATEMENT_EXPRESSIONS], 1,
5548 [Define to 1 if statement expressions work.])
5551 if test "${GNU_MALLOC}" = "yes" ; then
5552 AC_DEFINE(GNU_MALLOC, 1,
5553 [Define to 1 if you want to use the GNU memory allocator.])
5557 if test "${REL_ALLOC}" = "yes" ; then
5558 AC_DEFINE(REL_ALLOC, 1,
5559 [Define REL_ALLOC if you want to use the relocating allocator for
5562 test "$system_malloc" != "yes" && RALLOC_OBJ=ralloc.o
5564 AC_SUBST(RALLOC_OBJ)
5566 if test "$opsys" = "cygwin"; then
5567 CYGWIN_OBJ="cygw32.o"
5568 ## Cygwin differs because of its unexec().
5570 POST_ALLOC_OBJ=lastfile.o
5571 elif test "$opsys" = "mingw32"; then
5574 POST_ALLOC_OBJ=lastfile.o
5577 PRE_ALLOC_OBJ=lastfile.o
5580 AC_SUBST(CYGWIN_OBJ)
5581 AC_SUBST(PRE_ALLOC_OBJ)
5582 AC_SUBST(POST_ALLOC_OBJ)
5584 dnl Call this 'FORTIFY_SOUR' so that it sorts before the 'FORTIFY_SOURCE'
5585 dnl verbatim defined above. The tricky name is apropos, as this hack
5586 dnl makes Fortify go sour!
5587 AH_VERBATIM([FORTIFY_SOUR],
5588 [/* Without the following workaround, Emacs runs slowly on OS X 10.8.
5589 The workaround disables some useful run-time checking, so it
5590 should be conditional to the platforms with the performance bug.
5591 Perhaps Apple will fix this some day; also see m4/extern-inline.m4. */
5592 #if defined __APPLE__ && defined __GNUC__
5593 # ifndef _DONT_USE_CTYPE_INLINE_
5594 # define _DONT_USE_CTYPE_INLINE_
5596 # ifndef _FORTIFY_SOURCE
5597 # define _FORTIFY_SOURCE 0
5602 # If user asks to omit features, disable optional features that gnulib
5603 # might otherwise enable.
5604 if test "$with_features" = no && test "$enable_acl" != yes; then
5608 # Configure gnulib. Although this does not affect CFLAGS or LIBS permanently.
5609 # it temporarily reverts them to their pre-pkg-config values,
5610 # because gnulib needs to work with both src (which uses the
5611 # pkg-config stuff) and lib-src (which does not). For example, gnulib
5612 # may need to determine whether LIB_CLOCK_GETTIME should contain -lrt,
5613 # and it therefore needs to run in an environment where LIBS does not
5614 # already contain -lrt merely because 'pkg-config --libs' printed '-lrt'
5615 # for some package unrelated to lib-src.
5618 CFLAGS=$pre_PKG_CONFIG_CFLAGS
5619 LIBS="$LIB_PTHREAD $pre_PKG_CONFIG_LIBS"
5620 gl_ASSERT_NO_GNULIB_POSIXCHECK
5621 gl_ASSERT_NO_GNULIB_TESTS
5626 # timer_getoverrun needs the same libarary as timer_settime
5628 LIBS="$LIB_TIMER_TIME $LIBS"
5629 AC_CHECK_FUNCS(timer_getoverrun)
5632 if test "${opsys}" = "mingw32"; then
5633 CPPFLAGS="$CPPFLAGS -DUSE_CRT_DLL=1 -I \${abs_top_srcdir}/nt/inc"
5634 # Remove unneeded switches from the value of CC that goes to Makefiles
5635 CC=`AS_ECHO(["$CC"]) | sed -e "s,$GCC_TEST_OPTIONS,,"`
5639 aix4-2) LD_SWITCH_SYSTEM_TEMACS="-Wl,-bnodelcsect" ;;
5641 cygwin) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000" ;;
5644 if test "$HAVE_NS" = "yes"; then
5645 libs_nsgui="-framework AppKit"
5646 if test "$NS_IMPL_COCOA" = "yes"; then
5647 libs_nsgui="$libs_nsgui -framework IOKit -framework Carbon -framework IOSurface"
5652 LD_SWITCH_SYSTEM_TEMACS=$libs_nsgui
5653 ## The -headerpad option tells ld (see man page) to leave room at the
5654 ## end of the header for adding load commands. Needed for dumping.
5655 ## 0x1000 is enough for roughly 52 load commands on the x86_64
5656 ## architecture (where they are 78 bytes each). The actual number of
5657 ## load commands added is not consistent but normally ranges from
5658 ## about 14 to about 34. Setting it high gets us plenty of slop and
5659 ## only costs about 1.5K of wasted binary space.
5660 headerpad_extra=1000
5661 if test "$with_unexec" = yes; then
5662 LD_SWITCH_SYSTEM_TEMACS="-fno-pie $LD_SWITCH_SYSTEM_TEMACS -Xlinker -headerpad -Xlinker $headerpad_extra"
5665 ## This is here because src/Makefile.in did some extra fiddling around
5666 ## with LD_SWITCH_SYSTEM. It seems cleaner to put this in
5667 ## LD_SWITCH_SYSTEM_TEMACS instead,
5668 test "x$LD_SWITCH_SYSTEM" = "x" && test "x$GCC" != "xyes" && \
5669 LD_SWITCH_SYSTEM_TEMACS="-X $LD_SWITCH_SYSTEM_TEMACS"
5672 ## LD_SWITCH_X_SITE_RPATH is a -rpath option saying where to
5673 ## find X at run-time.
5674 ## When handled by cpp, this was in LD_SWITCH_SYSTEM. However, at the
5675 ## point where configure sourced the s/*.h file, LD_SWITCH_X_SITE_RPATH
5676 ## had not yet been defined and was expanded to null. Hence LD_SWITCH_SYSTEM
5677 ## had different values in configure (in ac_link) and src/Makefile.in.
5678 ## It seems clearer therefore to put this piece in LD_SWITCH_SYSTEM_TEMACS.
5679 gnu*) LD_SWITCH_SYSTEM_TEMACS="\$(LD_SWITCH_X_SITE_RPATH)" ;;
5682 ## Is it any better under MinGW64 to relocate emacs into higher addresses?
5683 case "$canonical" in
5684 x86_64-*-*) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x400000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5685 *) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x01000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5687 ## If they want unexec, disable Windows ASLR for the Emacs binary
5688 if test "$with_dumping" = "unexec"; then
5689 case "$canonical" in
5690 x86_64-*-*) LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -Wl,-disable-dynamicbase -Wl,-disable-high-entropy-va -Wl,-default-image-base-low" ;;
5691 *) LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -Wl,-disable-dynamicbase" ;;
5696 *) LD_SWITCH_SYSTEM_TEMACS= ;;
5699 # -no-pie or -nopie fixes a temacs segfault on Gentoo, OpenBSD,
5700 # Ubuntu, and other systems with "hardened" GCC configurations for
5701 # some reason (Bug#18784). We don't know why this works, but not
5702 # segfaulting is better than segfaulting. Use ac_c_werror_flag=yes
5703 # when trying the option, otherwise clang keeps warning that it does
5704 # not understand it, and pre-4.6 GCC has a similar problem
5705 # (Bug#20338). Prefer -no-pie to -nopie, as -no-pie is the
5706 # spelling used by GCC 6.1.0 and later (Bug#24682).
5708 [for $CC option to disable position independent executables],
5709 [emacs_cv_prog_cc_no_pie],
5710 [if test $with_unexec = no; then
5711 emacs_cv_prog_cc_no_pie='not needed'
5713 emacs_save_c_werror_flag=$ac_c_werror_flag
5714 emacs_save_LDFLAGS=$LDFLAGS
5715 ac_c_werror_flag=yes
5716 for emacs_cv_prog_cc_no_pie in -no-pie -nopie no; do
5717 test $emacs_cv_prog_cc_no_pie = no && break
5718 LDFLAGS="$emacs_save_LDFLAGS $emacs_cv_prog_cc_no_pie"
5719 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [break])
5721 ac_c_werror_flag=$emacs_save_c_werror_flag
5722 LDFLAGS=$emacs_save_LDFLAGS
5724 case $emacs_cv_prog_cc_no_pie in
5726 LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS $emacs_cv_prog_cc_no_pie"
5730 if test x$ac_enable_profiling != x ; then
5732 *freebsd | gnu-linux) ;;
5733 *) LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -pg" ;;
5737 LD_SWITCH_SYSTEM_TEMACS="$LDFLAGS_NOCOMBRELOC $LD_SWITCH_SYSTEM_TEMACS"
5739 AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
5741 ## Common for all window systems
5742 if test "$window_system" != "none"; then
5743 AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])
5744 AC_DEFINE(POLL_FOR_INPUT, 1, [Define if you poll periodically to detect C-g.])
5745 WINDOW_SYSTEM_OBJ="fontset.o fringe.o image.o"
5748 AC_SUBST(WINDOW_SYSTEM_OBJ)
5750 AH_TOP([/* GNU Emacs site configuration template file.
5752 Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2021
5753 Free Software Foundation, Inc.
5755 This file is part of GNU Emacs.
5757 GNU Emacs is free software: you can redistribute it and/or modify
5758 it under the terms of the GNU General Public License as published by
5759 the Free Software Foundation, either version 3 of the License, or (at
5760 your option) any later version.
5762 GNU Emacs is distributed in the hope that it will be useful,
5763 but WITHOUT ANY WARRANTY; without even the implied warranty of
5764 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5765 GNU General Public License for more details.
5767 You should have received a copy of the GNU General Public License
5768 along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
5771 /* No code in Emacs #includes config.h twice, but some bits of code
5772 intended to work with other packages as well (like gmalloc.c)
5773 think they can include it as many times as they like. */
5774 #ifndef EMACS_CONFIG_H
5775 #define EMACS_CONFIG_H
5778 AH_BOTTOM([#include <conf_post.h>
5780 #endif /* EMACS_CONFIG_H */
5789 #### Report on what we decided to do.
5790 #### Report GTK as a toolkit, even if it doesn't use Xt.
5791 #### It makes printing result more understandable as using GTK sets
5792 #### toolkit_scroll_bars to yes by default.
5793 if test "${HAVE_GTK}" = "yes"; then
5794 USE_X_TOOLKIT="$USE_GTK_TOOLKIT"
5797 if test $USE_ACL -ne 0; then
5798 ACL_SUMMARY="yes $LIB_ACL"
5803 if test -z "$GMP_H"; then
5809 emacs_standard_dirs='Standard dirs'
5811 Configured for '${canonical}'.
5813 Where should the build process find the source code? ${srcdir}
5814 What compiler should emacs be built with? ${CC} ${CFLAGS}
5815 Should Emacs use the GNU version of malloc? ${GNU_MALLOC}${GNU_MALLOC_reason}
5816 Should Emacs use a relocating allocator for buffers? ${REL_ALLOC}
5817 Should Emacs use mmap(2) for buffer allocation? $use_mmap_for_buffers
5818 What window system should Emacs use? ${window_system}
5819 What toolkit should Emacs use? ${USE_X_TOOLKIT}
5820 Where do we find X Windows header files? ${x_includes:-$emacs_standard_dirs}
5821 Where do we find X Windows libraries? ${x_libraries:-$emacs_standard_dirs}"])
5823 #### Please respect alphabetical ordering when making additions.
5825 emacs_config_features=
5826 for opt in ACL CAIRO DBUS FREETYPE GCONF GIF GLIB GMP GNUTLS GPM GSETTINGS \
5827 HARFBUZZ IMAGEMAGICK JPEG JSON LCMS2 LIBOTF LIBSELINUX LIBSYSTEMD LIBXML2 \
5828 M17N_FLT MODULES NATIVE_COMP NOTIFY NS OLDXMENU PDUMPER PNG RSVG SECCOMP \
5829 SOUND THREADS TIFF \
5830 TOOLKIT_SCROLL_BARS UNEXEC X11 XAW3D XDBE XFT XIM XPM XWIDGETS X_TOOLKIT \
5834 PDUMPER) val=${with_pdumper} ;;
5835 UNEXEC) val=${with_unexec} ;;
5836 GLIB) val=${emacs_cv_links_glib} ;;
5837 NOTIFY|ACL) eval val=\${${opt}_SUMMARY} ;;
5838 TOOLKIT_SCROLL_BARS|X_TOOLKIT) eval val=\${USE_$opt} ;;
5839 THREADS) val=${threads_enabled} ;;
5840 *) eval val=\${HAVE_$opt} ;;
5843 xno|xnone|x) continue ;;
5848 GTK*|LUCID|MOTIF) opt=$val ;;
5854 *lkqueue*) opt="$opt LIBKQUEUE" ;;
5855 *kqueue*) opt="$opt KQUEUE" ;;
5856 *inotify*) opt="$opt INOTIFY" ;;
5857 *gfile*) opt="$opt GFILENOTIFY" ;;
5858 *w32*) opt="$opt W32NOTIFY" ;;
5862 AS_VAR_APPEND([emacs_config_features], ["$optsep$opt"])
5865 AC_DEFINE_UNQUOTED(EMACS_CONFIG_FEATURES, "${emacs_config_features}",
5866 [Summary of some of the main features enabled by configure.])
5868 AS_ECHO([" Does Emacs use -lXaw3d? ${HAVE_XAW3D}
5869 Does Emacs use -lXpm? ${HAVE_XPM}
5870 Does Emacs use -ljpeg? ${HAVE_JPEG}
5871 Does Emacs use -ltiff? ${HAVE_TIFF}
5872 Does Emacs use a gif library? ${HAVE_GIF} $LIBGIF
5873 Does Emacs use a png library? ${HAVE_PNG} $LIBPNG
5874 Does Emacs use -lrsvg-2? ${HAVE_RSVG}
5875 Does Emacs use cairo? ${HAVE_CAIRO}
5876 Does Emacs use -llcms2? ${HAVE_LCMS2}
5877 Does Emacs use imagemagick? ${HAVE_IMAGEMAGICK}
5878 Does Emacs use native APIs for images? ${NATIVE_IMAGE_API}
5879 Does Emacs support sound? ${HAVE_SOUND}
5880 Does Emacs use -lgpm? ${HAVE_GPM}
5881 Does Emacs use -ldbus? ${HAVE_DBUS}
5882 Does Emacs use -lgconf? ${HAVE_GCONF}
5883 Does Emacs use GSettings? ${HAVE_GSETTINGS}
5884 Does Emacs use a file notification library? ${NOTIFY_SUMMARY}
5885 Does Emacs use access control lists? ${ACL_SUMMARY}
5886 Does Emacs use -lselinux? ${HAVE_LIBSELINUX}
5887 Does Emacs use -lgnutls? ${HAVE_GNUTLS}
5888 Does Emacs use -lxml2? ${HAVE_LIBXML2}
5889 Does Emacs use -lfreetype? ${HAVE_FREETYPE}
5890 Does Emacs use HarfBuzz? ${HAVE_HARFBUZZ}
5891 Does Emacs use -lm17n-flt? ${HAVE_M17N_FLT}
5892 Does Emacs use -lotf? ${HAVE_LIBOTF}
5893 Does Emacs use -lxft? ${HAVE_XFT}
5894 Does Emacs use -lsystemd? ${HAVE_LIBSYSTEMD}
5895 Does Emacs use -ljansson? ${HAVE_JSON}
5896 Does Emacs use the GMP library? ${HAVE_GMP}
5897 Does Emacs directly use zlib? ${HAVE_ZLIB}
5898 Does Emacs have dynamic modules support? ${HAVE_MODULES}
5899 Does Emacs use toolkit scroll bars? ${USE_TOOLKIT_SCROLL_BARS}
5900 Does Emacs support Xwidgets? ${HAVE_XWIDGETS}
5901 Does Emacs have threading support in lisp? ${threads_enabled}
5902 Does Emacs support the portable dumper? ${with_pdumper}
5903 Does Emacs support legacy unexec dumping? ${with_unexec}
5904 Which dumping strategy does Emacs use? ${with_dumping}
5905 Does Emacs have native lisp compiler? ${HAVE_NATIVE_COMP}
5908 if test -n "${EMACSDATA}"; then
5909 AS_ECHO([" Environment variable EMACSDATA set to: $EMACSDATA"])
5911 if test -n "${EMACSDOC}"; then
5912 AS_ECHO([" Environment variable EMACSDOC set to: $EMACSDOC"])
5917 if test "$HAVE_NS" = "yes"; then
5919 AS_ECHO(["Run '${MAKE-make}' to build Emacs, then run 'src/emacs' to test it.
5920 Run '${MAKE-make} install' in order to build an application bundle.
5921 The application will go to nextstep/Emacs.app and can be run or moved
5923 if test "$EN_NS_SELF_CONTAINED" = "yes"; then
5924 echo "The application will be fully self-contained."
5926 AS_ECHO(["The lisp resources for the application will be installed under ${prefix}.
5927 You may need to run \"${MAKE-make} install\" with sudo. The application will fail
5928 to run if these resources are not installed."])
5933 case $opsys,$emacs_uname_r in
5935 AC_MSG_WARN([[building Emacs on Cygwin 1.5 is not supported.]])
5938 cygwin,3.0.[[0-7]]'('* | cygwin,3.1.[[0-2]]'('*)
5939 AC_DEFINE([HAVE_CYGWIN_O_PATH_BUG], 1,
5940 [Define to 1 if opening a FIFO, socket, or symlink with O_PATH is buggy.]);;
5943 # Remove any trailing slashes in these variables.
5945 */) prefix=`AS_DIRNAME(["$prefix."])`;;
5947 case $exec_prefix in
5948 */) exec_prefix=`AS_DIRNAME(["$exec_prefix."])`;;
5951 if test "$HAVE_NS" = "yes"; then
5952 if test "$NS_IMPL_GNUSTEP" = yes; then
5953 AC_CONFIG_FILES([nextstep/GNUstep/Emacs.base/Resources/Info-gnustep.plist:nextstep/templates/Info-gnustep.plist.in \
5954 nextstep/GNUstep/Emacs.base/Resources/Emacs.desktop:nextstep/templates/Emacs.desktop.in])
5955 ns_check_file=Resources/Info-gnustep.plist
5957 AC_CONFIG_FILES([nextstep/Cocoa/Emacs.base/Contents/Info.plist:nextstep/templates/Info.plist.in \
5958 nextstep/Cocoa/Emacs.base/Contents/Resources/English.lproj/InfoPlist.strings:nextstep/templates/InfoPlist.strings.in])
5959 ns_check_file=Contents/Info.plist
5961 AC_SUBST(ns_check_file)
5964 AC_CONFIG_FILES([Makefile lib/gnulib.mk])
5966 dnl config.status treats $srcdir specially, so I think this is ok...
5967 AC_CONFIG_FILES([$srcdir/doc/man/emacs.1])
5969 m4_define([subdir_makefiles],
5970 [lib/Makefile lib-src/Makefile oldXMenu/Makefile doc/emacs/Makefile doc/misc/Makefile doc/lispintro/Makefile doc/lispref/Makefile src/Makefile lwlib/Makefile lisp/Makefile leim/Makefile nextstep/Makefile nt/Makefile])
5971 SUBDIR_MAKEFILES="subdir_makefiles"
5972 AC_CONFIG_FILES(subdir_makefiles)
5974 dnl The test/ directory is missing if './make-dist --no-tests' was used.
5975 opt_makefile=test/Makefile
5976 if test -f "$srcdir/$opt_makefile.in"; then
5977 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
5978 dnl Again, it's best not to use a variable. Though you can add
5979 dnl ", [], [opt_makefile='$opt_makefile']" and it should work.
5980 AC_CONFIG_FILES([test/Makefile])
5984 dnl The admin/ directory used to be excluded from tarfiles.
5985 if test -d $srcdir/admin; then
5986 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES admin/charsets/Makefile admin/unidata/Makefile admin/grammars/Makefile"
5987 AC_CONFIG_FILES([admin/charsets/Makefile])
5988 AC_CONFIG_FILES([admin/unidata/Makefile])
5989 AC_CONFIG_FILES([admin/grammars/Makefile])
5993 SUBDIR_MAKEFILES_IN=`echo " ${SUBDIR_MAKEFILES}" | sed -e 's| | $(srcdir)/|g' -e 's|Makefile|Makefile.in|g'`
5995 AC_SUBST(SUBDIR_MAKEFILES_IN)
5997 dnl You might wonder (I did) why epaths.h is generated by running make,
5998 dnl rather than just letting configure generate it from epaths.in.
5999 dnl One reason is that the various paths are not fully expanded (see above);
6000 dnl e.g., gamedir='${localstatedir}/games/emacs'.
6001 dnl Secondly, the GNU Coding standards require that one should be able
6002 dnl to run 'make prefix=/some/where/else' and override the values set
6003 dnl by configure. This also explains the 'move-if-change' test and
6004 dnl the use of force in the 'epaths-force' rule in Makefile.in.
6005 AC_CONFIG_COMMANDS([src/epaths.h], [
6006 if test "${opsys}" = "mingw32"; then
6007 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force-w32
6009 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force
6010 fi || AC_MSG_ERROR(['src/epaths.h' could not be made.])
6011 ], [GCC="$GCC" CPPFLAGS="$CPPFLAGS" opsys="$opsys"])
6013 dnl NB we have to cheat and use the ac_... version because abs_top_srcdir
6014 dnl is not yet set, sigh. Or we could use ../$srcdir/src/.gdbinit,
6016 AC_CONFIG_COMMANDS([src/.gdbinit], [
6017 if test ! -f src/.gdbinit && test -f "$srcdir/src/.gdbinit"; then
6018 AS_ECHO(["source $ac_abs_top_srcdir/src/.gdbinit"]) > src/.gdbinit
6022 dnl Perhaps this would be better named doc-emacs-emacsver.texi?
6023 dnl See comments for etc-refcards-emacsver.tex.
6024 dnl Since we get a doc/emacs directory generated anyway, for the Makefile,
6025 dnl it is not quite the same. But we are generating in $srcdir.
6026 AC_CONFIG_COMMANDS([doc/emacs/emacsver.texi], [
6027 ${MAKE-make} -s --no-print-directory -C doc/emacs doc-emacsver || \
6028 AC_MSG_ERROR(['doc/emacs/emacsver.texi' could not be made.])
6031 dnl If we give this the more natural name, etc/refcards/emacsver.texi,
6032 dnl then a directory etc/refcards is created in the build directory,
6033 dnl which is probably harmless, but confusing (in out-of-tree builds).
6034 dnl (If we were to generate etc/refcards/Makefile, this might change.)
6035 dnl It is really $srcdir/etc/refcards/emacsver.tex that we generate.
6036 AC_CONFIG_COMMANDS([etc-refcards-emacsver.tex], [
6037 ${MAKE-make} -s MAKEFILE_NAME=do-not-make-Makefile etc-emacsver || \
6038 AC_MSG_ERROR(['etc/refcards/emacsver.tex' could not be made.])
6041 if test $AUTO_DEPEND = yes; then
6042 for dir in $AUTODEPEND_PARENTS; do
6043 AS_MKDIR_P([$dir/deps])
6046 if $gl_gnulib_enabled_dynarray || $gl_gnulib_enabled_scratch_buffer; then
6047 AS_MKDIR_P([lib/malloc])
6048 if test $AUTO_DEPEND = yes; then
6049 AS_MKDIR_P([lib/deps/malloc])
6055 if test ! "$with_mailutils"; then
6056 if test "$with_pop" = yes; then
6057 AC_MSG_WARN([This configuration installs a 'movemail' program
6058 that retrieves POP3 email via only insecure channels.
6059 To omit insecure POP3, you can use '$0 --without-pop'.])
6060 elif test "$with_pop" = no-by-default; then
6061 AC_MSG_WARN([This configuration installs a 'movemail' program
6062 that does not retrieve POP3 email. By default, Emacs 25 and earlier
6063 installed a 'movemail' program that retrieved POP3 email via only
6064 insecure channels, a practice that is no longer recommended but that
6065 you can continue to support by using '$0 --with-pop'.])
6070 # Don't suggest GNU Mailutils, as it hasn't been ported.
6073 emacs_fix_movemail="use '$0 --with-mailutils'"
6074 case `(movemail --version) 2>/dev/null` in
6076 *) emacs_fix_movemail="install GNU Mailutils
6077 <https://mailutils.org> and $emacs_fix_movemail";;
6079 AC_MSG_NOTICE([You might want to $emacs_fix_movemail.]);;
6083 if test "${HAVE_XFT}" = yes; then
6084 AC_MSG_WARN([This configuration uses libXft, which has a number of
6085 font rendering issues, and is being considered for removal in the
6086 next release of Emacs. Please consider using Cairo graphics +
6087 HarfBuzz text shaping instead (they are auto-detected if the
6088 relevant development headers are installed).])
6091 if test "${HAVE_CAIRO}" = "yes" && test "${HAVE_HARFBUZZ}" = no; then
6092 AC_MSG_WARN([This configuration uses the Cairo graphics library,
6093 but not the HarfBuzz font shaping library (minimum version $harfbuzz_required_ver).
6094 We recommend the use of HarfBuzz when using Cairo, please install
6095 appropriate HarfBuzz development packages.])
6098 # Let plain 'make' work.
6099 test "$MAKE" = make || test -f makefile || cat >makefile <<EOF
6103 \$(MAKE) -f Makefile \$?
6105 \$(MAKE) -f Makefile \$<