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, 1999-2018 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, 27.0.50, 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-$host}}
180 emacs_uname_r=`uname -r`
182 dnl Support for --program-prefix, --program-suffix and
183 dnl --program-transform-name options
186 dnl It is important that variables on the RHS not be expanded here,
187 dnl hence the single quotes. This is per the GNU coding standards, see
188 dnl (autoconf) Installation Directory Variables
189 dnl See also epaths.h below.
190 lispdir='${datadir}/emacs/${version}/lisp'
191 standardlisppath='${lispdir}'
192 locallisppath='${datadir}/emacs/${version}/site-lisp:'\
193 '${datadir}/emacs/site-lisp'
194 lisppath='${locallisppath}:${standardlisppath}'
195 etcdir='${datadir}/emacs/${version}/etc'
196 archlibdir='${libexecdir}/emacs/${version}/${configuration}'
197 etcdocdir='${datadir}/emacs/${version}/etc'
198 gamedir='${localstatedir}/games/emacs'
200 dnl Special option to disable the most of other options.
202 [AS_HELP_STRING([--without-all],
203 [omit almost all features and build
204 small executable with minimal dependencies])],
205 [with_features=$withval],
208 dnl OPTION_DEFAULT_OFF(NAME, HELP-STRING)
209 dnl Create a new --with option that defaults to being disabled.
210 dnl NAME is the base name of the option. The shell variable with_NAME
211 dnl will be set to either the user's value (if the option is
212 dnl specified; 'yes' for a plain --with-NAME) or to 'no' (if the
213 dnl option is not specified). Note that the shell variable name is
214 dnl constructed as autoconf does, by replacing non-alphanumeric
215 dnl characters with "_".
216 dnl HELP-STRING is the help text for the option.
217 AC_DEFUN([OPTION_DEFAULT_OFF], [dnl
218 AC_ARG_WITH([$1],[AS_HELP_STRING([--with-$1],[$2])],[],[dnl
219 m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=no])dnl
222 dnl OPTION_DEFAULT_ON(NAME, HELP-STRING)
223 dnl Create a new --with option that defaults to $with_features.
224 dnl NAME is the base name of the option. The shell variable with_NAME
225 dnl will be set either to 'no' (for a plain --without-NAME) or to
226 dnl 'yes' (if the option is not specified). Note that the shell
227 dnl variable name is constructed as autoconf does, by replacing
228 dnl non-alphanumeric characters with "_".
229 dnl HELP-STRING is the help text for the option.
230 AC_DEFUN([OPTION_DEFAULT_ON], [dnl
231 AC_ARG_WITH([$1],[AS_HELP_STRING([--without-$1],[$2])],[],[dnl
232 m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=$with_features])dnl
235 # For retrieving mail, unencrypted network connections are the default
236 # only on native MS-Windows platforms. (FIXME: These platforms should
237 # also be secure by default.)
239 AC_ARG_WITH([mailutils],
240 [AS_HELP_STRING([--with-mailutils],
241 [rely on GNU Mailutils, so that the --without-pop through --with-mailhost
242 options are irrelevant; this is the default if GNU Mailutils is
245 [with_mailutils=$with_features
246 if test "$with_mailutils" = yes; then
247 (movemail --version) >/dev/null 2>&1 || with_mailutils=no
249 if test "$with_mailutils" = no; then
252 AC_SUBST([with_mailutils])
255 [AS_HELP_STRING([--with-pop],
256 [Support POP mail retrieval if Emacs movemail is used (not recommended,
257 as Emacs movemail POP is insecure). This is the default only on
258 native MS-Windows.])],
261 *-mingw*) with_pop=yes;;
262 *) with_pop=no-by-default;;
264 if test "$with_pop" = yes; then
265 AC_DEFINE(MAIL_USE_POP)
267 AH_TEMPLATE(MAIL_USE_POP, [Define to support POP mail retrieval.])dnl
269 OPTION_DEFAULT_OFF([kerberos],[support Kerberos-authenticated POP])
270 if test "$with_kerberos" != no; then
273 AH_TEMPLATE(KERBEROS,
274 [Define to support Kerberos-authenticated POP mail retrieval.])dnl
276 OPTION_DEFAULT_OFF([kerberos5],[support Kerberos version 5 authenticated POP])
277 if test "${with_kerberos5}" != no; then
278 if test "${with_kerberos}" = no; then
282 AC_DEFINE(KERBEROS5, 1, [Define to use Kerberos 5 instead of Kerberos 4.])
285 OPTION_DEFAULT_OFF([hesiod],[support Hesiod to get the POP server host])
286 dnl FIXME hesiod support may not be present, so it seems like an error
287 dnl to define, or at least use, this unconditionally.
288 if test "$with_hesiod" != no; then
289 AC_DEFINE(HESIOD, 1, [Define to support using a Hesiod database to find the POP server.])
292 OPTION_DEFAULT_OFF([mail-unlink],[unlink, rather than empty, mail spool after reading])
293 if test "$with_mail_unlink" != no; then
294 AC_DEFINE(MAIL_UNLINK_SPOOL, 1, [Define to unlink, rather than empty, mail spool after reading.])
297 AC_ARG_WITH([mailhost],[AS_HELP_STRING([--with-mailhost=HOSTNAME],
298 [string giving default POP mail host])],
299 AC_DEFINE_UNQUOTED(MAILHOST, ["$withval"], [String giving fallback POP mail host.]))
301 AC_ARG_WITH([sound],[AS_HELP_STRING([--with-sound=VALUE],
302 [compile with sound support (VALUE one of: yes, alsa, oss, bsd-ossaudio, no;
303 default yes). Only for GNU/Linux, FreeBSD, NetBSD, MinGW, Cygwin.])],
304 [ case "${withval}" in
305 yes|no|alsa|oss|bsd-ossaudio) val=$withval ;;
306 *) AC_MSG_ERROR(['--with-sound=$withval' is invalid;
307 this option's value should be 'yes', 'no', 'alsa', 'oss', or 'bsd-ossaudio'.])
312 [with_sound=$with_features])
314 dnl FIXME currently it is not the last.
315 dnl This should be the last --with option, because --with-x is
316 dnl added later on when we find the file name of X, and it's best to
317 dnl keep them together visually.
318 AC_ARG_WITH([x-toolkit],[AS_HELP_STRING([--with-x-toolkit=KIT],
319 [use an X toolkit (KIT one of: yes or gtk, gtk2, gtk3, lucid or athena, motif, no)])],
320 [ case "${withval}" in
321 y | ye | yes ) val=gtk ;;
323 l | lu | luc | luci | lucid ) val=lucid ;;
324 a | at | ath | athe | athen | athena ) val=athena ;;
325 m | mo | mot | moti | motif ) val=motif ;;
326 g | gt | gtk ) val=gtk ;;
330 AC_MSG_ERROR(['--with-x-toolkit=$withval' is invalid;
331 this option's value should be 'yes', 'no', 'lucid', 'athena', 'motif', 'gtk',
332 'gtk2' or 'gtk3'. 'yes' and 'gtk' are synonyms.
333 'athena' and 'lucid' are synonyms.])
339 OPTION_DEFAULT_OFF([wide-int], [prefer wide Emacs integers (typically 62-bit); allows buffer and string size up to 2GB on 32-bit hosts, at the cost of 10% to 30% slowdown of Lisp interpreter and larger memory footprint])
340 if test "$with_wide_int" = yes; then
341 AC_DEFINE([WIDE_EMACS_INT], 1, [Use long long for EMACS_INT if available.])
344 dnl _ON results in a '--without' option in the --help output, so
345 dnl the help text should refer to "don't compile", etc.
346 with_xpm_set=${with_xpm+set}
347 OPTION_DEFAULT_ON([xpm],[don't compile with XPM image support])
348 OPTION_DEFAULT_ON([jpeg],[don't compile with JPEG image support])
349 OPTION_DEFAULT_ON([tiff],[don't compile with TIFF image support])
350 OPTION_DEFAULT_ON([gif],[don't compile with GIF image support])
351 OPTION_DEFAULT_ON([png],[don't compile with PNG image support])
352 OPTION_DEFAULT_ON([rsvg],[don't compile with SVG image support])
353 OPTION_DEFAULT_ON([lcms2],[don't compile with Little CMS support])
354 OPTION_DEFAULT_ON([libsystemd],[don't compile with libsystemd support])
355 OPTION_DEFAULT_OFF([cairo],[compile with Cairo drawing (experimental)])
356 OPTION_DEFAULT_ON([xml2],[don't compile with XML parsing support])
357 OPTION_DEFAULT_ON([imagemagick],[don't compile with ImageMagick image support])
358 OPTION_DEFAULT_ON([json], [don't compile with native JSON support])
360 OPTION_DEFAULT_ON([xft],[don't use XFT for anti aliased fonts])
361 OPTION_DEFAULT_ON([libotf],[don't use libotf for OpenType font support])
362 OPTION_DEFAULT_ON([m17n-flt],[don't use m17n-flt for text shaping])
364 OPTION_DEFAULT_ON([toolkit-scroll-bars],[don't use Motif or Xaw3d scroll bars])
365 OPTION_DEFAULT_ON([xaw3d],[don't use Xaw3d])
366 OPTION_DEFAULT_ON([xim],[don't use X11 XIM])
367 AC_ARG_WITH([ns],[AS_HELP_STRING([--with-ns],
368 [use Nextstep (macOS Cocoa or GNUstep) windowing system.
369 On by default on macOS.])],[],[with_ns=maybe])
370 OPTION_DEFAULT_OFF([w32], [use native MS Windows GUI in a Cygwin build])
372 OPTION_DEFAULT_ON([gpm],[don't use -lgpm for mouse support on a GNU/Linux console])
373 OPTION_DEFAULT_ON([dbus],[don't compile with D-Bus support])
374 AC_ARG_WITH([gconf],[AS_HELP_STRING([--with-gconf],
375 [compile with Gconf support (Gsettings replaces this)])],[],
376 [if test $with_features = yes; then
381 OPTION_DEFAULT_ON([gsettings],[don't compile with GSettings support])
382 OPTION_DEFAULT_ON([selinux],[don't compile with SELinux support])
383 OPTION_DEFAULT_ON([gnutls],[don't use -lgnutls for SSL/TLS support])
384 OPTION_DEFAULT_ON([zlib],[don't compile with zlib decompression support])
385 OPTION_DEFAULT_OFF([modules],[compile with dynamic modules support])
386 OPTION_DEFAULT_ON([threads],[don't compile with elisp threading support])
388 AC_ARG_WITH([file-notification],[AS_HELP_STRING([--with-file-notification=LIB],
389 [use a file notification library (LIB one of: yes, inotify, kqueue, gfile, w32, no)])],
390 [ case "${withval}" in
391 y | ye | yes ) val=yes ;;
393 i | in | ino | inot | inoti | inotif | inotify ) val=inotify ;;
394 k | kq | kqu | kque | kqueu | kqueue ) val=kqueue ;;
395 g | gf | gfi | gfil | gfile ) val=gfile ;;
396 w | w3 | w32 ) val=w32 ;;
397 * ) AC_MSG_ERROR(['--with-file-notification=$withval' is invalid;
398 this option's value should be 'yes', 'no', 'inotify', 'kqueue', 'gfile' or 'w32'.
399 'yes' is a synonym for 'w32' on MS-Windows, for 'no' on Nextstep,
400 otherwise for the first of 'inotify', 'kqueue' or 'gfile' that is usable.])
403 with_file_notification=$val
405 [with_file_notification=$with_features])
407 OPTION_DEFAULT_OFF([xwidgets],
408 [enable use of some gtk widgets in Emacs buffers (requires gtk3)])
410 ## For the times when you want to build Emacs but don't have
411 ## a suitable makeinfo, and can live without the manuals.
412 dnl https://lists.gnu.org/r/emacs-devel/2008-04/msg01844.html
413 OPTION_DEFAULT_ON([makeinfo],[don't require makeinfo for building manuals])
415 ## Makefile.in needs the cache file name.
418 ## This is an option because I do not know if all info/man support
419 ## compressed files, nor how to test if they do so.
420 OPTION_DEFAULT_ON([compress-install],
421 [don't compress some files (.el, .info, etc.) when installing. Equivalent to:
422 make GZIP_PROG= install])
424 AC_ARG_WITH(gameuser,dnl
425 [AS_HELP_STRING([--with-gameuser=USER_OR_GROUP],
426 [user for shared game score files.
427 An argument prefixed by ':' specifies a group instead.])])
430 case ${with_gameuser} in
432 yes) gamegroup=games ;;
433 :*) gamegroup=${with_gameuser#:} ;;
434 *) gameuser=${with_gameuser} ;;
437 AC_ARG_WITH([gnustep-conf],dnl
438 [AS_HELP_STRING([--with-gnustep-conf=FILENAME],
439 [name of GNUstep configuration file to use on systems where the command
440 'gnustep-config' does not work; default $GNUSTEP_CONFIG_FILE, or
441 /etc/GNUstep/GNUstep.conf])])
442 test "X${with_gnustep_conf}" != X && test "${with_gnustep_conf}" != yes && \
443 GNUSTEP_CONFIG_FILE="${with_gnustep_conf}"
444 test "X$GNUSTEP_CONFIG_FILE" = "X" && \
445 GNUSTEP_CONFIG_FILE=/etc/GNUstep/GNUstep.conf
447 AC_ARG_ENABLE(ns-self-contained,
448 [AS_HELP_STRING([--disable-ns-self-contained],
449 [disable self contained build under NeXTstep])],
450 EN_NS_SELF_CONTAINED=$enableval,
451 EN_NS_SELF_CONTAINED=yes)
454 AC_ARG_ENABLE(locallisppath,
455 [AS_HELP_STRING([--enable-locallisppath=PATH],
456 [directories Emacs should search for lisp files specific
458 if test "${enableval}" = "no"; then
460 elif test "${enableval}" != "yes"; then
461 locallisppath=${enableval} locallisppathset=yes
464 AC_ARG_ENABLE(checking,
465 [AS_HELP_STRING([--enable-checking@<:@=LIST@:>@],
466 [enable expensive run-time checks. With LIST,
467 enable only specific categories of checks.
468 Categories are: all,yes,no.
469 Flags are: stringbytes, stringoverrun, stringfreelist,
470 xmallocoverrun, conslist, glyphs])],
471 [ac_checking_flags="${enableval}"],[])
472 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
473 for check in $ac_checking_flags
476 # these set all the flags to specific states
477 yes) ac_enable_checking=1 ;;
478 no) ac_enable_checking= ;
479 ac_gc_check_stringbytes= ;
480 ac_gc_check_string_overrun= ;
481 ac_gc_check_string_free_list= ;
482 ac_xmalloc_overrun= ;
483 ac_gc_check_cons_list= ;
485 all) ac_enable_checking=1 ;
486 ac_gc_check_stringbytes=1 ;
487 ac_gc_check_string_overrun=1 ;
488 ac_gc_check_string_free_list=1 ;
489 ac_xmalloc_overrun=1 ;
490 ac_gc_check_cons_list=1 ;
492 # these enable particular checks
493 stringbytes) ac_gc_check_stringbytes=1 ;;
494 stringoverrun) ac_gc_check_string_overrun=1 ;;
495 stringfreelist) ac_gc_check_string_free_list=1 ;;
496 xmallocoverrun) ac_xmalloc_overrun=1 ;;
497 conslist) ac_gc_check_cons_list=1 ;;
498 glyphs) ac_glyphs_debug=1 ;;
499 *) AC_MSG_ERROR(unknown check category $check) ;;
504 if test x$ac_enable_checking != x ; then
505 AC_DEFINE(ENABLE_CHECKING, 1,
506 [Define to 1 if expensive run-time data type and consistency checks are enabled.])
508 if test x$ac_gc_check_stringbytes != x ; then
509 AC_DEFINE(GC_CHECK_STRING_BYTES, 1,
510 [Define this temporarily to hunt a bug. If defined, the size of
511 strings is redundantly recorded in sdata structures so that it can
512 be compared to the sizes recorded in Lisp strings.])
514 if test x$ac_gc_check_string_overrun != x ; then
515 AC_DEFINE(GC_CHECK_STRING_OVERRUN, 1,
516 [Define this to check for short string overrun.])
518 if test x$ac_gc_check_string_free_list != x ; then
519 AC_DEFINE(GC_CHECK_STRING_FREE_LIST, 1,
520 [Define this to check the string free list.])
522 if test x$ac_xmalloc_overrun != x ; then
523 AC_DEFINE(XMALLOC_OVERRUN_CHECK, 1,
524 [Define this to check for malloc buffer overrun.])
526 if test x$ac_gc_check_cons_list != x ; then
527 AC_DEFINE(GC_CHECK_CONS_LIST, 1,
528 [Define this to check for errors in cons list.])
530 if test x$ac_glyphs_debug != x ; then
531 AC_DEFINE(GLYPH_DEBUG, 1,
532 [Define this to enable glyphs debugging code.])
535 dnl The name of this option is unfortunate. It predates, and has no
536 dnl relation to, the "sampling-based elisp profiler" added in 24.3.
537 dnl Actually, it stops it working.
538 dnl https://lists.gnu.org/r/emacs-devel/2012-11/msg00393.html
539 AC_ARG_ENABLE(profiling,
540 [AS_HELP_STRING([--enable-profiling],
541 [build emacs with low-level, gprof profiling support.
542 Mainly useful for debugging Emacs itself. May not work on
543 all platforms. Stops profiler.el working.])],
544 [ac_enable_profiling="${enableval}"],[])
545 if test x$ac_enable_profiling != x ; then
546 PROFILING_CFLAGS="-DPROFILING=1 -pg"
550 AC_SUBST(PROFILING_CFLAGS)
552 AC_ARG_ENABLE(autodepend,
553 [AS_HELP_STRING([--enable-autodepend],
554 [automatically generate dependencies to .h-files.
555 Requires gcc, enabled if found.])],
556 [ac_enable_autodepend="${enableval}"],[ac_enable_autodepend=yes])
558 AC_ARG_ENABLE(gtk-deprecation-warnings,
559 [AS_HELP_STRING([--enable-gtk-deprecation-warnings],
560 [Show Gtk+/Gdk deprecation warnings for Gtk+ >= 3.0])],
561 [ac_enable_gtk_deprecation_warnings="${enableval}"],[])
564 AC_ARG_ENABLE([build-details],
565 [AS_HELP_STRING([--disable-build-details],
566 [Make the build more deterministic by omitting host
567 names, time stamps, etc. from the output.])],
568 [test "$enableval" = no && BUILD_DETAILS=--no-build-details])
569 AC_SUBST([BUILD_DETAILS])
571 dnl This used to use changequote, but, apart from 'changequote is evil'
572 dnl per the autoconf manual, we can speed up autoconf somewhat by quoting
573 dnl the great gob of text. Thus it's not processed for possible expansion.
574 dnl Just make sure the brackets remain balanced.
576 dnl Since Emacs can't find matching pairs of quotes, boundaries are
577 dnl indicated by comments.
581 ### If you add support for a new configuration, add code to this
582 ### switch statement to recognize your configuration name and select
583 ### the appropriate opsys.
585 ### As far as handling version numbers on operating systems is
586 ### concerned, make sure things will fail in a fixable way. If
587 ### /etc/MACHINES doesn't say anything about version numbers, be
588 ### prepared to handle anything reasonably. If version numbers
589 ### matter, be sure /etc/MACHINES says something about it.
592 case "${canonical}" in
594 ## GNU/Linux and similar ports
609 ## FreeBSD kernel + glibc based userland
620 *-*-openbsd* | *-*-mirbsd* )
624 ## Apple Darwin / macOS
626 case "${canonical}" in
627 *-apple-darwin[0-9].*) unported=yes ;;
628 i[3456]86-* | x86_64-* ) ;;
632 ## FIXME: Find a way to use Fink if available (Bug#11507).
635 ## Chromium Native Client
645 ## HP 9000 series 700 and 800, running HP/UX
649 hppa*-hp-hpux1[1-9]* )
651 CFLAGS="-D_INCLUDE__STDC_A1_SOURCE $CFLAGS"
655 rs6000-ibm-aix4.[23]* )
658 powerpc-ibm-aix4.[23]* )
661 rs6000-ibm-aix[56]* )
664 powerpc-ibm-aix[5-9]* | powerpc-ibm-aix[1-9][0-9]* )
670 | i[3456]86-*-solaris2* | i[3456]86-*-sunos5* \
671 | x86_64-*-solaris2* | x86_64-*-sunos5*)
672 case "${canonical}" in
674 amd64-*-*|x86_64-*-*) ;;
678 case "${canonical}" in
679 *-sunos5.[1-9][0-9]* | *-solaris2.[1-9][0-9]* )
681 emacs_check_sunpro_c=yes
683 *-sunos5.[1-5]* | *-solaris2.[1-5]* ) unported=yes ;;
684 ## Note that Emacs 23.1's NEWS said the following would be dropped.
685 *-sunos5.6* | *-solaris2.6* )
689 ## 5.7 EOL Aug 2008, 5.8 EOL Mar 2012.
690 *-sunos5.[7-9]* | *-solaris2.[7-9]* )
692 emacs_check_sunpro_c=yes
695 ## Watch out for a compiler that we know will not work.
696 case "${canonical}" in
697 *-solaris* | *-sunos5* )
698 if [ "x$CC" = x/usr/ucb/cc ]; then
699 ## /usr/ucb/cc doesn't work;
700 ## we should find some other compiler that does work.
711 test -z "$CC" && CC=qcc
712 CFLAGS="$CFLAGS -D__NO_EXT_QNX"
713 LDFLAGS="-N2MB $LDFLAGS"
716 ## Intel 386 machines where we don't care about the manufacturer.
718 case "${canonical}" in
719 *-darwin* ) opsys=darwin ;;
722 # MinGW overrides and adds some system headers in nt/inc.
723 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
725 *-sysv4.2uw* ) opsys=unixware ;;
726 *-sysv5uw* ) opsys=unixware ;;
727 *-sysv5OpenUNIX* ) opsys=unixware ;;
728 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
734 case "${canonical}" in
737 # MinGW overrides and adds some system headers in nt/inc.
738 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
740 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
749 ### If the code above didn't choose an operating system, just choose
750 ### an operating system based on the configuration name. You really
751 ### only want to use this when you have no idea what the right
752 ### operating system is; if you know what operating systems a machine
753 ### runs, it's cleaner to make it explicit in the case statement
755 if test x"${opsys}" = x; then
756 case "${canonical}" in
757 *-gnu* ) opsys=gnu ;;
767 if test $unported = yes; then
768 AC_MSG_ERROR([Emacs does not support '${canonical}' systems.
769 If you think it should, please send a report to ${PACKAGE_BUGREPORT}.
770 Check 'etc/MACHINES' for recognized configuration names.])
773 #### Choose a compiler.
775 dnl Don't bother to test for C89.
776 AC_DEFUN([_AC_PROG_CC_C89], [$2])
778 dnl Sets GCC=yes if using gcc.
779 AC_PROG_CC([gcc cc cl clang "$XCRUN gcc" "$XCRUN clang"])
780 if test -n "$XCRUN"; then
781 AC_CHECK_PROGS(AR, [ar "$XCRUN ar"])
782 test -n "$AR" && export AR
785 dnl Emacs needs C99 or later.
790 if test x$GCC = xyes; then
791 test "x$GCC_TEST_OPTIONS" != x && CC="$CC $GCC_TEST_OPTIONS"
794 # Avoid gnulib's tests for -lcrypto, so that there's no static dependency on it.
795 AC_DEFUN([gl_CRYPTO_CHECK])
796 # Avoid gnulib's tests for HAVE_WORKING_O_NOATIME and HAVE_WORKING_O_NOFOLLOW,
797 # as we don't use them.
798 AC_DEFUN([gl_FCNTL_O_FLAGS])
799 # Avoid gnulib's test for pthread_sigmask.
801 for func in $ac_func_list; do
802 test $func = pthread_sigmask || AS_VAR_APPEND([funcs], [" $func"])
805 # Use the system putenv even if it lacks GNU features, as we don't need them,
806 # and the gnulib replacement runs afoul of a FreeBSD 10.1 bug; see Bug#19874.
807 AC_CHECK_FUNCS_ONCE([putenv])
808 AC_DEFUN([gl_FUNC_PUTENV],
809 [test "$ac_cv_func_putenv" = yes || REPLACE_PUTENV=1])
810 # Emacs does not use the wchar or wctype-h modules.
811 AC_DEFUN([gt_TYPE_WINT_T],
812 [GNULIB_OVERRIDES_WINT_T=0
813 AC_SUBST([GNULIB_OVERRIDES_WINT_T])])
815 # Initialize gnulib right after choosing the compiler.
816 dnl Amongst other things, this sets AR and ARFLAGS.
819 if test "$ac_test_CFLAGS" != set; then
820 # It's helpful to have C macros available to GDB, so prefer -g3 to -g
821 # if -g3 works and the user does not specify CFLAGS.
822 # This test must follow gl_EARLY; otherwise AC_LINK_IFELSE complains.
825 emacs_g3_CFLAGS='-g3';;
827 emacs_g3_CFLAGS='-g3 -O2';;
831 if test -n "$emacs_g3_CFLAGS"; then
832 emacs_save_CFLAGS=$CFLAGS
833 CFLAGS=$emacs_g3_CFLAGS
834 AC_CACHE_CHECK([whether $CC accepts $emacs_g3_CFLAGS],
835 [emacs_cv_prog_cc_g3],
836 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
837 [emacs_cv_prog_cc_g3=yes],
838 [emacs_cv_prog_cc_g3=no])])
839 if test $emacs_cv_prog_cc_g3 != yes; then
840 CFLAGS=$emacs_save_CFLAGS
842 if test $opsys = mingw32; then
843 CFLAGS="$CFLAGS -gdwarf-2"
850 # No optimization flag was inferred for this non-GCC compiler.
851 # Try -O. This is needed for xlc on AIX; see Bug#14258.
852 emacs_save_CFLAGS=$CFLAGS
853 test -z "$CFLAGS" || CFLAGS="$CFLAGS "
855 AC_CACHE_CHECK([whether $CC accepts -O],
856 [emacs_cv_prog_cc_o],
857 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
858 [emacs_cv_prog_cc_o=yes],
859 [emacs_cv_prog_cc_o=no])])
860 if test $emacs_cv_prog_cc_o != yes; then
861 CFLAGS=$emacs_save_CFLAGS
866 # gl_GCC_VERSION_IFELSE([major], [minor], [run-if-found], [run-if-not-found])
867 # ---------------------------------------------------------------------------
868 # If $CPP is gcc-MAJOR.MINOR or newer, then run RUN-IF-FOUND.
869 # Otherwise, run RUN-IF-NOT-FOUND.
870 AC_DEFUN([gl_GCC_VERSION_IFELSE],
874 #if ($1) < __GNUC__ || (($1) == __GNUC__ && ($2) <= __GNUC_MINOR__)
877 # error "your version of gcc is older than $1.$2"
884 AC_ARG_ENABLE([gcc-warnings],
885 [AS_HELP_STRING([--enable-gcc-warnings@<:@=TYPE@:>@],
886 [control generation of GCC warnings. The TYPE 'yes'
887 means to fail if any warnings are issued; 'warn-only'
888 means issue warnings without failing (default for
889 developer builds); 'no' means disable warnings
890 (default for non-developer builds).])],
893 *) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
895 gl_gcc_warnings=$enableval],
896 [# By default, use 'warn-only' if it looks like the invoker of 'configure'
897 # is a developer as opposed to a builder. This is most likely true
898 # if GCC is recent enough and there is a .git directory or file;
899 # however, if there is also a .tarball-version file it is probably
900 # just a release imported into Git for patch management.
902 if test -e "$srcdir"/.git && test ! -f "$srcdir"/.tarball-version; then
903 gl_GCC_VERSION_IFELSE([5], [3], [gl_gcc_warnings=warn-only])
906 AC_ARG_ENABLE([check-lisp-object-type],
907 [AS_HELP_STRING([--enable-check-lisp-object-type],
908 [Enable compile time checks for the Lisp_Object data type,
909 which can catch some bugs during development.])])
910 if test "$enable_check_lisp_object_type" = yes; then
911 AC_DEFINE([CHECK_LISP_OBJECT_TYPE], 1,
912 [Define to enable compile-time checks for the Lisp_Object data type.])
915 # clang is unduly picky about some things.
916 AC_CACHE_CHECK([whether the compiler is clang], [emacs_cv_clang],
923 [emacs_cv_clang=yes],
924 [emacs_cv_clang=no])])
927 # When compiling with GCC, prefer -isystem to -I when including system
928 # include files, to avoid generating useless diagnostics for the files.
929 AS_IF([test $gl_gcc_warnings = no],
932 AS_IF([test "$emacs_cv_clang" = yes],
934 # Turn off some warnings if supported.
935 gl_WARN_ADD([-Wno-switch])
936 gl_WARN_ADD([-Wno-pointer-sign])
937 gl_WARN_ADD([-Wno-string-plus-int])
938 gl_WARN_ADD([-Wno-unknown-attributes])
943 # This, $nw, is the list of warnings we disable.
946 case $with_x_toolkit in
947 lucid | athena | motif)
948 # Old toolkits mishandle 'const'.
949 nw="$nw -Wwrite-strings"
952 AS_IF([test $gl_gcc_warnings = yes],
953 [WERROR_CFLAGS=-Werror])
955 nw="$nw -Wcast-align -Wcast-align=strict" # Emacs is tricky with pointers.
956 nw="$nw -Wduplicated-branches" # Too many false alarms
957 nw="$nw -Wformat-overflow=2" # False alarms due to GCC bug 80776
958 nw="$nw -Wsystem-headers" # Don't let system headers trigger warnings
959 nw="$nw -Woverlength-strings" # Not a problem these days
960 nw="$nw -Wformat-nonliteral" # we do this a lot
961 nw="$nw -Wvla" # Emacs uses <vla.h>.
962 nw="$nw -Wswitch-default" # Too many warnings for now
963 nw="$nw -Wunused-const-variable=2" # lisp.h declares const objects.
964 nw="$nw -Winline" # OK to ignore 'inline'
965 nw="$nw -Wstrict-overflow" # OK to optimize assuming that
966 # signed overflow has undefined behavior
967 nw="$nw -Wsync-nand" # irrelevant here, and provokes ObjC warning
968 nw="$nw -Wunsafe-loop-optimizations" # OK to suppress unsafe optimizations
969 nw="$nw -Wbad-function-cast" # These casts are no worse than others.
971 # Emacs doesn't care about shadowing; see
972 # <https://lists.gnu.org/r/emacs-diffs/2011-11/msg00265.html>.
975 # Emacs's use of alloca inhibits protecting the stack.
976 nw="$nw -Wstack-protector"
978 # Emacs's use of partly-const functions such as Fgnutls_available_p
979 # make this option problematic.
980 nw="$nw -Wsuggest-attribute=const"
982 # Emacs's use of partly-pure functions such as CHECK_TYPE make this
983 # option problematic.
984 nw="$nw -Wsuggest-attribute=pure"
986 # This part is merely for shortening the command line,
987 # since -Wall implies -Wswitch.
990 # This part is merely for shortening the command line,
991 # since -Wno-FOO needs to be added below regardless.
992 nw="$nw -Wmissing-field-initializers"
993 nw="$nw -Woverride-init"
994 nw="$nw -Wtype-limits"
995 nw="$nw -Wunused-parameter"
997 if test "$emacs_cv_clang" = yes; then
998 nw="$nw -Wcast-align"
999 nw="$nw -Wdouble-promotion"
1000 nw="$nw -Wmissing-braces"
1003 # These cause too much noise in the MinGW build
1004 if test $opsys = mingw32; then
1005 nw="$nw -Wpointer-sign"
1006 nw="$nw -Wsuggest-attribute=format"
1009 gl_MANYWARN_ALL_GCC([ws])
1010 gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
1014 gl_WARN_ADD([-Wredundant-decls]) # Prefer this, as we don't use Bison.
1015 gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
1016 gl_WARN_ADD([-Wno-override-init]) # More trouble than it is worth
1017 gl_WARN_ADD([-Wno-sign-compare]) # Too many warnings for now
1018 gl_WARN_ADD([-Wno-type-limits]) # Too many warnings for now
1019 gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
1020 gl_WARN_ADD([-Wno-format-nonliteral])
1022 # clang is unduly picky about braces.
1023 if test "$emacs_cv_clang" = yes; then
1024 gl_WARN_ADD([-Wno-missing-braces])
1027 # This causes too much noise in the MinGW build
1028 if test $opsys = mingw32; then
1029 gl_WARN_ADD([-Wno-pointer-sign])
1032 AC_DEFINE([GCC_LINT], [1], [Define to 1 if --enable-gcc-warnings.])
1033 AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
1034 AH_VERBATIM([GNULIB_PORTCHECK_FORTIFY_SOURCE],
1035 [/* Enable compile-time and run-time bounds-checking, and some warnings,
1036 without upsetting glibc 2.15+. */
1037 #if (defined GNULIB_PORTCHECK && !defined _FORTIFY_SOURCE \
1038 && defined __OPTIMIZE__ && __OPTIMIZE__)
1039 # define _FORTIFY_SOURCE 2
1044 # clang is picky about these regardless of whether
1045 # --enable-gcc-warnings is specified.
1046 if test "$emacs_cv_clang" = yes; then
1047 gl_WARN_ADD([-Wno-initializer-overrides])
1048 gl_WARN_ADD([-Wno-tautological-compare])
1049 gl_WARN_ADD([-Wno-tautological-constant-out-of-range-compare])
1052 # Use a slightly smaller set of warning options for lib/.
1054 nw="$nw -Wunused-macros"
1055 gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
1057 AC_SUBST([WERROR_CFLAGS])
1058 AC_SUBST([GNULIB_WARN_CFLAGS])
1067 AC_ARG_ENABLE(link-time-optimization,
1068 [AS_HELP_STRING([--enable-link-time-optimization],
1069 [build with link-time optimization
1070 (experimental; see INSTALL)])],
1071 if test "${enableval}" != "no"; then
1073 if test "$emacs_cv_clang" = yes; then
1074 AC_MSG_CHECKING([whether link-time optimization is supported by clang])
1075 GOLD_PLUGIN=`$CC -print-file-name=LLVMgold.so 2>/dev/null`
1076 if test -x "$GOLD_PLUGIN"; then
1079 elif test x$GCC = xyes; then
1080 AC_MSG_CHECKING([whether link-time optimization is supported by gcc])
1081 CPUS=`getconf _NPROCESSORS_ONLN 2>/dev/null`
1082 if test x$CPUS != x; then
1088 AC_MSG_ERROR([Link-time optimization is not supported with your compiler.])
1090 if test -z "$LTO"; then
1094 CFLAGS="$CFLAGS $LTO"
1095 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1096 [ac_lto_supported=yes], [ac_lto_supported=no])
1097 CFLAGS="$old_CFLAGS"
1099 AC_MSG_RESULT([$ac_lto_supported])
1100 if test "$ac_lto_supported" = "yes"; then
1101 CFLAGS="$CFLAGS $LTO"
1102 if test "$emacs_cv_clang" = yes; then
1103 AC_MSG_WARN([Please read INSTALL before using link-time optimization with clang])
1104 # WARNING: 'ar --plugin ...' doesn't work without
1105 # command, so plugin name is appended to ARFLAGS.
1106 ARFLAGS="cru --plugin $GOLD_PLUGIN"
1107 RANLIB="$RANLIB --plugin $GOLD_PLUGIN"
1109 dnl The following is needed for GCC 4.9.0. The GCC 4.9.0 release notes
1110 dnl suggest that instead of -ffat-lto-objects we should use gcc-ar and
1111 dnl gcc-ranlib in place of ar and ranlib, but gcc-ar makes /usr/bin/ar
1112 dnl dump core on Fedora 20, so play it safe for now.
1113 gl_COMPILER_OPTION_IF([-ffat-lto-objects],
1114 [CFLAGS="$CFLAGS -ffat-lto-objects"])
1120 dnl Automake replacements.
1121 AC_DEFUN([AM_CONDITIONAL],
1125 dnl Prefer silent make output. For verbose output, use
1126 dnl 'configure --disable-silent-rules' or 'make V=1' .
1127 dnl This code is adapted from Automake.
1128 dnl Although it can be simplified now that GNU Make is assumed,
1129 dnl the simplification hasn't been done yet.
1130 AC_ARG_ENABLE([silent-rules],
1132 [--disable-silent-rules],
1133 [verbose build output (undo: "make V=0")])])
1134 if test "$enable_silent_rules" = no; then
1135 AM_DEFAULT_VERBOSITY=1
1137 AM_DEFAULT_VERBOSITY=0
1140 AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
1142 AC_SUBST([AM_DEFAULT_V])
1143 AC_SUBST([AM_DEFAULT_VERBOSITY])
1145 dnl Some other nice autoconf tests.
1147 dnl These are commented out, since gl_EARLY and/or Autoconf already does them.
1149 dnl if test "x$RANLIB" = x; then
1154 dnl Sadly, AC_PROG_LN_S is too restrictive. It also tests whether links
1155 dnl can be made to directories. This is not relevant for our usage, and
1156 dnl excludes some cases that work fine for us. Eg MS Windows or files
1157 dnl hosted on AFS, both examples where simple links work, but links to
1158 dnl directories fail. We use a cut-down version instead.
1161 AC_CACHE_CHECK([command to symlink files in the same directory], [emacs_cv_ln_s_fileonly],
1162 [rm -f conf$$ conf$$.file
1164 emacs_cv_ln_s_fileonly='cp -p'
1166 dnl On MinGW, ensure we will call the MSYS /bin/ln.exe, not some
1167 dnl random program in the current directory.
1168 if (echo >conf$$.file) 2>/dev/null; then
1169 if ln -s conf$$.file conf$$ 2>/dev/null; then
1170 if test "$opsys" = "mingw32"; then
1171 emacs_cv_ln_s_fileonly='/bin/ln -s'
1173 emacs_cv_ln_s_fileonly='ln -s'
1175 elif ln conf$$.file conf$$ 2>/dev/null; then
1176 if test "$opsys" = "mingw32"; then
1177 emacs_cv_ln_s_fileonly=/bin/ln
1179 emacs_cv_ln_s_fileonly=ln
1184 rm -f conf$$ conf$$.file])
1185 LN_S_FILEONLY=$emacs_cv_ln_s_fileonly
1187 AC_SUBST(LN_S_FILEONLY)
1190 dnl AC_PROG_LN_S sets LN_S to 'cp -pR' for MinGW, on the premise that 'ln'
1191 dnl doesn't support links to directories, as in "ln file dir". But that
1192 dnl use is non-portable, and OTOH MinGW wants to use hard links for Emacs
1193 dnl executables at "make install" time.
1194 dnl See https://lists.gnu.org/r/emacs-devel/2013-04/msg00475.html
1195 dnl for more details.
1196 if test "$opsys" = "mingw32"; then
1200 dnl On some Debian versions, "install-info" prints irritating messages
1201 dnl "This is not dpkg install-info anymore, but GNU install-info"
1202 dnl if called via an absolute file name.
1203 dnl Use the entirely-identical-but-quieter ginstall-info instead if present.
1204 dnl Sadly some people may have an old ginstall-info installed on
1205 dnl non-Debian systems, so we can't use this.
1206 dnl AC_PATH_PROGS(INSTALL_INFO, [ginstall-info install-info], :,
1207 dnl $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1209 AC_PATH_PROG(INSTALL_INFO, install-info, :,
1210 $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1211 dnl Don't use GZIP, which is used by gzip for additional parameters.
1212 AC_PATH_PROG(GZIP_PROG, gzip)
1214 test $with_compress_install != yes && test -n "$GZIP_PROG" && \
1215 GZIP_PROG=" # $GZIP_PROG # (disabled by configure --without-compress-install)"
1217 AC_CACHE_CHECK([for 'find' args to delete a file],
1218 [emacs_cv_find_delete],
1219 [if touch conftest.tmp && find conftest.tmp -delete 2>/dev/null &&
1220 test ! -f conftest.tmp
1221 then emacs_cv_find_delete="-delete"
1222 else emacs_cv_find_delete="-exec rm -f {} ';'"
1224 FIND_DELETE=$emacs_cv_find_delete
1225 AC_SUBST([FIND_DELETE])
1229 if test "$CANNOT_DUMP" != yes; then
1230 if test $opsys = gnu-linux; then
1231 if test "${SETFATTR+set}" != set; then
1232 AC_CACHE_CHECK([for setfattr],
1233 [emacs_cv_prog_setfattr],
1235 if (setfattr -n user.pax.flags conftest.tmp) >/dev/null 2>&1; then
1236 emacs_cv_prog_setfattr=yes
1238 emacs_cv_prog_setfattr=no
1240 if test "$emacs_cv_prog_setfattr" = yes; then
1241 PAXCTL_notdumped='$(SETFATTR) -n user.pax.flags -v er'
1247 AC_SUBST([SETFATTR])
1250 case $opsys,$PAXCTL_notdumped,$emacs_uname_r in
1251 gnu-linux,,* | netbsd,,[0-7].*)
1252 AC_PATH_PROG([PAXCTL], [paxctl], [],
1253 [$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR/usr/sbin])
1254 if test -n "$PAXCTL"; then
1255 if test "$opsys" = netbsd; then
1256 PAXCTL_dumped='$(PAXCTL) +a'
1257 PAXCTL_notdumped=$PAXCTL_dumped
1259 AC_MSG_CHECKING([whether binaries have a PT_PAX_FLAGS header])
1260 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1261 [if $PAXCTL -v conftest$EXEEXT >/dev/null 2>&1; then
1262 AC_MSG_RESULT([yes])
1267 if test -n "$PAXCTL"; then
1268 PAXCTL_dumped='$(PAXCTL) -zex'
1269 PAXCTL_notdumped='$(PAXCTL) -r'
1275 AC_SUBST([PAXCTL_dumped])
1276 AC_SUBST([PAXCTL_notdumped])
1278 # Makeinfo on macOS is ancient, check whether there is a more recent
1279 # version installed by Homebrew.
1280 AC_CHECK_PROGS(BREW, [brew])
1281 if test -n "$BREW"; then
1282 AC_PATH_PROG([MAKEINFO], [makeinfo], [],
1283 [`$BREW --prefix texinfo 2>/dev/null`/bin$PATH_SEPARATOR$PATH])
1286 ## Require makeinfo >= 4.13 (last of the 4.x series) to build the manuals.
1287 if test "${MAKEINFO:=makeinfo}" != "no"; then
1288 case `($MAKEINFO --version) 2>/dev/null` in
1289 *' (GNU texinfo) '4.1[[3-9]]* | \
1290 *' (GNU texinfo) '[[5-9]]* | \
1291 *' (GNU texinfo) '[[1-9][0-9]]* ) ;;
1296 ## Makeinfo is unusual. For a released Emacs, the manuals are
1297 ## pre-built, and not deleted by the normal clean rules. makeinfo is
1298 ## therefore in the category of "special tools" not normally required, which
1299 ## configure does not have to check for (eg autoconf itself).
1300 ## In a repository checkout on the other hand, the manuals are not included.
1301 ## So makeinfo is a requirement to build from the repository, and configure
1302 ## should test for it as it does for any other build requirement.
1303 ## We use the presence of $srcdir/info/emacs to distinguish a release,
1304 ## with pre-built manuals, from a repository checkout.
1307 if test "$MAKEINFO" = "no"; then
1309 if test "x${with_makeinfo}" = "xno"; then
1311 elif test ! -e "$srcdir/info/emacs" && test ! -e "$srcdir/info/emacs.info"; then
1312 AC_MSG_ERROR( [You do not seem to have makeinfo >= 4.13, and your
1313 source tree does not seem to have pre-built manuals in the 'info' directory.
1314 Either install a suitable version of makeinfo, or re-run configure
1315 with the '--without-makeinfo' option to build without the manuals.] )
1318 AC_SUBST([MAKEINFO])
1319 AC_SUBST(HAVE_MAKEINFO)
1321 if test $opsys = mingw32; then
1322 DOCMISC_W32=efaq-w32
1326 AC_SUBST(DOCMISC_W32)
1328 dnl Add our options to ac_link now, after it is set up.
1330 if test x$GCC = xyes; then
1331 test "x$GCC_LINK_TEST_OPTIONS" != x && \
1332 ac_link="$ac_link $GCC_LINK_TEST_OPTIONS"
1334 test "x$NON_GCC_LINK_TEST_OPTIONS" != x && \
1335 ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
1338 AC_CACHE_CHECK([whether addresses are sanitized],
1339 [emacs_cv_sanitize_address],
1342 [[#ifndef __has_feature
1343 #define __has_feature(f) 0
1345 #if defined __SANITIZE_ADDRESS__ || __has_feature (address_sanitizer)
1347 error "Addresses are not sanitized.";
1350 [emacs_cv_sanitize_address=yes],
1351 [emacs_cv_sanitize_address=no])])
1353 dnl The function dump-emacs will not be defined and temacs will do
1354 dnl (load "loadup") automatically unless told otherwise.
1355 test "x$CANNOT_DUMP" = "x" && CANNOT_DUMP=no
1357 nacl) CANNOT_DUMP=yes ;;
1360 if test "$CANNOT_DUMP" = "yes"; then
1361 AC_DEFINE(CANNOT_DUMP, 1, [Define if Emacs cannot be dumped on your system.])
1362 elif test "$emacs_cv_sanitize_address" = yes; then
1363 AC_MSG_WARN([[Addresses are sanitized; suggest CANNOT_DUMP=yes]])
1366 AC_SUBST(CANNOT_DUMP)
1369 UNEXEC_OBJ=unexelf.o
1371 # MSDOS uses unexcoff.o
1373 UNEXEC_OBJ=unexaix.o
1379 UNEXEC_OBJ=unexmacosx.o
1382 UNEXEC_OBJ=unexhp9k800.o
1385 UNEXEC_OBJ=unexw32.o
1388 # Use the Solaris dldump() function, called from unexsol.c, to dump
1389 # emacs, instead of the generic ELF dump code found in unexelf.c.
1390 # The resulting binary has a complete symbol table, and is better
1391 # for debugging and other observability tools (debuggers, pstack, etc).
1393 # It is likely that dldump() works with older Solaris too, but this has
1394 # not been tested, so for now this change is for Solaris 10 or newer.
1395 UNEXEC_OBJ=unexsol.o
1398 test "$CANNOT_DUMP" = "yes" && UNEXEC_OBJ=
1403 ## Let 'ld' find image libs and similar things in /usr/local/lib.
1404 ## The system compiler, GCC, has apparently been modified to not
1405 ## look there, contrary to what a stock GCC would do.
1406 ### It's not our place to do this. See bug#10313#17.
1407 ### LD_SWITCH_SYSTEM=-L/usr/local/lib
1412 ## cpp test was "ifdef __mips__", but presumably this is equivalent...
1413 case $host_cpu in mips*) LD_SWITCH_SYSTEM="-G 0";; esac
1417 ### It's not our place to do this. See bug#10313#17.
1418 ### LD_SWITCH_SYSTEM="-Wl,-rpath,/usr/pkg/lib -L/usr/pkg/lib -Wl,-rpath,/usr/local/lib -L/usr/local/lib"
1423 ## Han Boetes <han@boetes.org> says this is necessary,
1424 ## otherwise Emacs dumps core on elf systems.
1425 LD_SWITCH_SYSTEM="-Z"
1428 AC_SUBST(LD_SWITCH_SYSTEM)
1430 ac_link="$ac_link $LD_SWITCH_SYSTEM"
1432 ## This setting of LD_SWITCH_SYSTEM references LD_SWITCH_X_SITE_RPATH,
1433 ## which has not been defined yet. When this was handled with cpp,
1434 ## it was expanded to null when configure sourced the s/*.h file.
1435 ## Thus LD_SWITCH_SYSTEM had different values in configure and the Makefiles.
1436 ## FIXME it would be cleaner to put this in LD_SWITCH_SYSTEM_TEMACS
1437 ## (or somesuch), but because it is supposed to go at the _front_
1438 ## of LD_SWITCH_SYSTEM, we cannot do that in exactly the same way.
1439 ## Compare with the gnu-linux case below, which added to the end
1440 ## of LD_SWITCH_SYSTEM, and so can instead go at the front of
1441 ## LD_SWITCH_SYSTEM_TEMACS.
1444 LD_SWITCH_SYSTEM="\$(LD_SWITCH_X_SITE_RPATH) $LD_SWITCH_SYSTEM" ;;
1451 AC_CHECK_DECL([__ELF__])
1452 if test "$ac_cv_have_decl___ELF__" = "yes"; then
1453 ## With ELF, make sure that all common symbols get allocated to in the
1454 ## data section. Otherwise, the dump of temacs may miss variables in
1455 ## the shared library that have been initialized. For example, with
1456 ## GNU libc, __malloc_initialized would normally be resolved to the
1457 ## shared library's .bss section, which is fatal.
1458 if test "x$GCC" = "xyes"; then
1459 C_SWITCH_MACHINE="-fno-common"
1461 AC_MSG_ERROR([Non-GCC compilers are not supported.])
1464 dnl This was the unexalpha.c case. Removed in 24.1, 2010-07-24,
1465 dnl albeit under the mistaken assumption that said file
1466 dnl was no longer used.
1467 AC_MSG_ERROR([Non-ELF systems are not supported since Emacs 24.1.])
1471 AC_SUBST(C_SWITCH_MACHINE)
1473 AC_SUBST(UNEXEC_OBJ)
1476 ## Some programs in src produce warnings saying certain subprograms
1477 ## are too complex and need a MAXMEM value greater than 2000 for
1478 ## additional optimization. --nils@exp-math.uni-essen.de
1479 test "$opsys" = "aix4.2" && test "x$GCC" != "xyes" && \
1480 C_SWITCH_SYSTEM="-ma -qmaxmem=4000"
1481 if test "$opsys" = "mingw32"; then
1482 case "$canonical" in
1483 x86_64-*-mingw*) C_SWITCH_SYSTEM="-mtune=generic" ;;
1484 *) C_SWITCH_SYSTEM="-mtune=pentium4" ;;
1487 ## gnu-linux might need -D_BSD_SOURCE on old libc5 systems.
1488 ## It is redundant in glibc2, since we define _GNU_SOURCE.
1489 AC_SUBST(C_SWITCH_SYSTEM)
1494 ## IBM's X11R5 uses -lIM and -liconv in AIX 3.2.2.
1495 aix4-2) LIBS_SYSTEM="-lrts -lIM -liconv" ;;
1497 freebsd|dragonfly) LIBS_SYSTEM="-lutil" ;;
1499 hpux*) LIBS_SYSTEM="-l:libdld.sl" ;;
1501 qnxnto) LIBS_SYSTEM="-lsocket" ;;
1503 sol2*) LIBS_SYSTEM="-lsocket -lnsl" ;;
1505 ## Motif needs -lgen.
1506 unixware) LIBS_SYSTEM="-lsocket -lnsl -lelf -lgen" ;;
1509 AC_SUBST(LIBS_SYSTEM)
1511 ### Make sure subsequent tests use flags consistent with the build flags.
1513 if test x"${OVERRIDE_CPPFLAGS}" != x; then
1514 CPPFLAGS="${OVERRIDE_CPPFLAGS}"
1516 CPPFLAGS="$C_SWITCH_SYSTEM $C_SWITCH_MACHINE $CPPFLAGS"
1519 # Suppress obsolescent Autoconf test for size_t; Emacs assumes C99 or better.
1520 AC_DEFUN([AC_TYPE_SIZE_T])
1521 # Likewise for obsolescent test for uid_t, gid_t; Emacs assumes them.
1522 AC_DEFUN([AC_TYPE_UID_T])
1524 # sqrt and other floating-point functions such as fmod and frexp
1525 # are found in -lm on many systems.
1527 AC_SEARCH_LIBS([sqrt], [m])
1528 if test "X$LIBS" = "X$OLD_LIBS"; then
1531 LIB_MATH=$ac_cv_search_sqrt
1535 dnl Current possibilities handled by sed (aix4-2 -> aix,
1536 dnl gnu-linux -> gnu/linux, etc.):
1537 dnl gnu, gnu/linux, gnu/kfreebsd, aix, cygwin, darwin, hpux.
1538 dnl And special cases: berkeley-unix, usg-unix-v, ms-dos, windows-nt.
1539 SYSTEM_TYPE=`echo $opsys | sed -e 's/[[0-9]].*//' -e 's|-|/|'`
1546 ## Adding -lm confuses the dynamic linker, so omit it.
1549 freebsd | dragonfly )
1550 SYSTEM_TYPE=berkeley-unix
1552 gnu-linux | gnu-kfreebsd )
1554 hpux10-20 | hpux11 )
1558 SYSTEM_TYPE=windows-nt
1560 dnl NB this may be adjusted below.
1562 SYSTEM_TYPE=berkeley-unix
1566 SYSTEM_TYPE=usg-unix-v
1572 AC_DEFINE_UNQUOTED(SYSTEM_TYPE, "$SYSTEM_TYPE",
1573 [The type of system you are compiling for; sets 'system-type'.])
1574 AC_SUBST([SYSTEM_TYPE])
1577 pre_PKG_CONFIG_CFLAGS=$CFLAGS
1578 pre_PKG_CONFIG_LIBS=$LIBS
1580 PKG_PROG_PKG_CONFIG(0.9.0)
1582 dnl EMACS_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4)
1583 dnl acts like PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4,
1584 dnl HAVE_GSTUFF=yes, HAVE_GSTUFF=no) -- see pkg-config man page --
1585 dnl except that it postprocesses CFLAGS as needed for --enable-gcc-warnings.
1586 dnl EMACS_CHECK_MODULES accepts optional 3rd and 4th arguments that
1587 dnl can take the place of the default HAVE_GSTUFF=yes and HAVE_GSTUFF=no
1589 AC_DEFUN([EMACS_CHECK_MODULES],
1590 [PKG_CHECK_MODULES([$1], [$2],
1591 [$1_CFLAGS=`AS_ECHO(["$$1_CFLAGS"]) | sed -e "$edit_cflags"`
1592 m4_default([$3], [HAVE_$1=yes])],
1593 [m4_default([$4], [HAVE_$1=no])])])
1596 if test "${with_sound}" != "no"; then
1597 # Sound support for GNU/Linux, the free BSDs, MinGW, and Cygwin.
1598 AC_CHECK_HEADERS([machine/soundcard.h sys/soundcard.h soundcard.h mmsystem.h],
1599 have_sound_header=yes, [], [
1601 #define WIN32_LEAN_AND_MEAN
1602 #include <windows.h>
1605 test "${with_sound}" = "oss" && test "${have_sound_header}" != "yes" && \
1606 AC_MSG_ERROR([OSS sound support requested but not found.])
1608 if test "${with_sound}" = "bsd-ossaudio" || test "${with_sound}" = "yes"; then
1609 # Emulation library used on NetBSD.
1610 AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
1611 test "${with_sound}" = "bsd-ossaudio" && test -z "$LIBSOUND" && \
1612 AC_MSG_ERROR([bsd-ossaudio sound support requested but not found.])
1613 dnl FIXME? If we did find ossaudio, should we set with_sound=bsd-ossaudio?
1614 dnl Traditionally, we go on to check for alsa too. Does that make sense?
1618 if test "${with_sound}" = "alsa" || test "${with_sound}" = "yes"; then
1620 ALSA_MODULES="alsa >= $ALSA_REQUIRED"
1621 EMACS_CHECK_MODULES([ALSA], [$ALSA_MODULES])
1622 if test $HAVE_ALSA = yes; then
1623 SAVE_CFLAGS="$CFLAGS"
1625 CFLAGS="$ALSA_CFLAGS $CFLAGS"
1626 LIBS="$ALSA_LIBS $LIBS"
1627 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <asoundlib.h>]], [[snd_lib_error_set_handler (0);]])],
1628 emacs_alsa_normal=yes,
1629 emacs_alsa_normal=no)
1630 if test "$emacs_alsa_normal" != yes; then
1631 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <alsa/asoundlib.h>]],
1632 [[snd_lib_error_set_handler (0);]])],
1633 emacs_alsa_subdir=yes,
1634 emacs_alsa_subdir=no)
1635 if test "$emacs_alsa_subdir" != yes; then
1636 AC_MSG_ERROR([pkg-config found alsa, but it does not compile. See config.log for error messages.])
1638 ALSA_CFLAGS="$ALSA_CFLAGS -DALSA_SUBDIR_INCLUDE"
1641 CFLAGS="$SAVE_CFLAGS"
1643 LIBSOUND="$LIBSOUND $ALSA_LIBS"
1644 CFLAGS_SOUND="$CFLAGS_SOUND $ALSA_CFLAGS"
1645 AC_DEFINE(HAVE_ALSA, 1, [Define to 1 if ALSA is available.])
1646 elif test "${with_sound}" = "alsa"; then
1647 AC_MSG_ERROR([ALSA sound support requested but not found.])
1649 fi dnl with_sound = alsa|yes
1651 dnl Define HAVE_SOUND if we have sound support. We know it works and
1652 dnl compiles only on the specified platforms. For others, it
1653 dnl probably doesn't make sense to try.
1654 dnl FIXME So surely we should bypass this whole section if not using
1655 dnl one of these platforms?
1656 if test x$have_sound_header = xyes || test $HAVE_ALSA = yes; then
1658 dnl defined __FreeBSD__ || defined __NetBSD__ || defined __linux__
1659 dnl Adjust the --with-sound help text if you change this.
1660 gnu-linux|freebsd|netbsd|mingw32|cygwin)
1661 AC_DEFINE(HAVE_SOUND, 1, [Define to 1 if you have sound support.])
1667 AC_SUBST(CFLAGS_SOUND)
1670 dnl checks for header files
1671 AC_CHECK_HEADERS_ONCE(
1678 sys/utsname.h pwd.h utmp.h util.h sys/prctl.h)
1680 AC_CACHE_CHECK([for ADDR_NO_RANDOMIZE],
1681 [emacs_cv_personality_addr_no_randomize],
1683 [AC_LANG_PROGRAM([[#include <sys/personality.h>]],
1684 [[personality (personality (0xffffffff)
1685 | ADDR_NO_RANDOMIZE)]])],
1686 [emacs_cv_personality_addr_no_randomize=yes],
1687 [emacs_cv_personality_addr_no_randomize=no])])
1688 if test $emacs_cv_personality_addr_no_randomize = yes; then
1689 AC_DEFINE([HAVE_PERSONALITY_ADDR_NO_RANDOMIZE], [1],
1690 [Define to 1 if personality flag ADDR_NO_RANDOMIZE exists.])
1693 # Note that Solaris has sys/sysinfo.h which defines struct
1694 # sysinfo as well. To make sure that we're using GNU/Linux
1695 # sysinfo, we explicitly set one of its fields.
1696 if test "$ac_cv_header_sys_sysinfo_h" = yes; then
1697 AC_CACHE_CHECK([if Linux sysinfo may be used], [emacs_cv_linux_sysinfo],
1698 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1699 [[struct sysinfo si;
1702 emacs_cv_linux_sysinfo=yes, emacs_cv_linux_sysinfo=no)])
1704 if test $emacs_cv_linux_sysinfo = yes; then
1705 AC_DEFINE([HAVE_LINUX_SYSINFO], 1, [Define to 1 if you have Linux sysinfo function.])
1706 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1707 [[struct sysinfo si; return si.mem_unit]])],
1708 AC_DEFINE(LINUX_SYSINFO_UNIT, 1,
1709 [Define to 1 if Linux sysinfo sizes are in multiples of mem_unit bytes.]))
1713 dnl On Solaris 8 there's a compilation warning for term.h because
1714 dnl it doesn't define 'bool'.
1715 AC_CHECK_HEADERS(term.h, , , -)
1717 AC_CHECK_DECLS([sys_siglist], [], [], [[#include <signal.h>
1719 if test $ac_cv_have_decl_sys_siglist != yes; then
1720 # For Tru64, at least:
1721 AC_CHECK_DECLS([__sys_siglist], [], [], [[#include <signal.h>
1726 AC_CHECK_HEADERS_ONCE(sys/socket.h)
1727 AC_CHECK_HEADERS(net/if.h, , , [AC_INCLUDES_DEFAULT
1728 #if HAVE_SYS_SOCKET_H
1729 #include <sys/socket.h>
1731 AC_CHECK_HEADERS(ifaddrs.h, , , [AC_INCLUDES_DEFAULT
1732 #if HAVE_SYS_SOCKET_H
1733 #include <sys/socket.h>
1735 AC_CHECK_HEADERS(net/if_dl.h, , , [AC_INCLUDES_DEFAULT
1736 #if HAVE_SYS_SOCKET_H
1737 #include <sys/socket.h>
1740 dnl checks for structure members
1741 AC_CHECK_MEMBERS([struct ifreq.ifr_flags, struct ifreq.ifr_hwaddr,
1742 struct ifreq.ifr_netmask, struct ifreq.ifr_broadaddr,
1743 struct ifreq.ifr_addr,
1744 struct ifreq.ifr_addr.sa_len], , ,
1745 [AC_INCLUDES_DEFAULT
1746 #if HAVE_SYS_SOCKET_H
1747 #include <sys/socket.h>
1753 dnl Check for endianness.
1754 dnl AC_C_BIGENDIAN is done by gnulib.
1756 dnl check for Make feature
1759 AUTODEPEND_PARENTS='lib src'
1760 dnl check if we have GCC and autodepend is on.
1761 if test "$GCC" = yes && test "$ac_enable_autodepend" = yes; then
1762 AC_CACHE_CHECK([whether gcc understands -MMD -MF], [emacs_cv_autodepend],
1763 [SAVE_CFLAGS="$CFLAGS"
1764 CFLAGS="$CFLAGS -MMD -MF deps.d -MP"
1765 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1766 [emacs_cv_autodepend=yes], [emacs_cv_autodepend=no])
1767 CFLAGS="$SAVE_CFLAGS"
1768 test -f deps.d || emacs_cv_autodepend=no
1770 if test $emacs_cv_autodepend = yes; then
1774 AC_SUBST(AUTO_DEPEND)
1776 #### Choose a window system.
1778 ## We leave window_system equal to none if
1779 ## we end up building without one. Any new window system should
1780 ## set window_system to an appropriate value and add objects to
1781 ## window-system-specific substs.
1785 if test "$no_x" != yes; then
1789 LD_SWITCH_X_SITE_RPATH=
1790 if test "${x_libraries}" != NONE; then
1791 if test -n "${x_libraries}"; then
1792 LD_SWITCH_X_SITE=-L`AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -L/g'`
1793 LD_SWITCH_X_SITE_RPATH=-Wl,-rpath,`
1794 AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -Wl,-rpath,/g'
1797 x_default_search_path=""
1798 x_search_path=${x_libraries}
1799 if test -z "${x_search_path}"; then
1800 x_search_path=/usr/lib
1802 for x_library in `AS_ECHO(["$x_search_path:"]) | \
1803 sed -e "s/:/ /g" -e p -e "s:/lib[[^ /]]* :/share :g"`; do
1805 ${x_library}/X11/%L/%T/%N%C%S:\
1806 ${x_library}/X11/%l/%T/%N%C%S:\
1807 ${x_library}/X11/%T/%N%C%S:\
1808 ${x_library}/X11/%L/%T/%N%S:\
1809 ${x_library}/X11/%l/%T/%N%S:\
1810 ${x_library}/X11/%T/%N%S"
1811 if test x"${x_default_search_path}" = x; then
1812 x_default_search_path=${x_search_path}
1814 x_default_search_path="${x_search_path}:${x_default_search_path}"
1818 AC_SUBST(LD_SWITCH_X_SITE_RPATH)
1820 if test "${x_includes}" != NONE && test -n "${x_includes}"; then
1821 C_SWITCH_X_SITE=$isystem`AS_ECHO(["$x_includes"]) | sed -e "s/:/ $isystem/g"`
1824 if test x"${x_includes}" = x; then
1825 bitmapdir=/usr/include/X11/bitmaps
1827 # accumulate include directories that have X11 bitmap subdirectories
1829 for bmd in `AS_ECHO(["$x_includes"]) | sed -e 's/:/ /g'`; do
1830 if test -d "${bmd}/X11/bitmaps"; then
1831 bmd_acc="${bmd_acc}:${bmd}/X11/bitmaps"
1833 if test -d "${bmd}/bitmaps"; then
1834 bmd_acc="${bmd_acc}:${bmd}/bitmaps"
1837 bitmapdir=${bmd_acc#:}
1840 test "${with_ns}" = maybe && test "${opsys}" != darwin && with_ns=no
1842 NS_GNUSTEP_CONFIG=no
1845 tmp_CPPFLAGS="$CPPFLAGS"
1846 tmp_CFLAGS="$CFLAGS"
1847 CPPFLAGS="$CPPFLAGS -x objective-c"
1848 CFLAGS="$CFLAGS -x objective-c"
1851 if test "${with_ns}" != no; then
1852 if test "${opsys}" = darwin; then
1854 ns_appdir=`pwd`/nextstep/Emacs.app
1855 ns_appbindir=${ns_appdir}/Contents/MacOS
1856 ns_appresdir=${ns_appdir}/Contents/Resources
1857 ns_appsrc=Cocoa/Emacs.base
1858 ns_fontfile=macfont.o
1859 elif flags=$( (gnustep-config --objc-flags) 2>/dev/null); then
1861 NS_GNUSTEP_CONFIG=yes
1862 GNU_OBJC_CFLAGS=$flags
1863 LIBS_GNUSTEP=$(gnustep-config --gui-libs) || exit
1864 elif test -f $GNUSTEP_CONFIG_FILE; then
1866 dnl FIXME sourcing this several times in subshells seems inefficient.
1867 GNUSTEP_SYSTEM_HEADERS=$(
1868 . $GNUSTEP_CONFIG_FILE
1869 AS_ECHO(["$GNUSTEP_SYSTEM_HEADERS"])
1871 GNUSTEP_SYSTEM_LIBRARIES=$(
1872 . $GNUSTEP_CONFIG_FILE
1873 AS_ECHO(["$GNUSTEP_SYSTEM_LIBRARIES"])
1875 dnl I seemed to need these as well with GNUstep-startup 0.25.
1876 GNUSTEP_LOCAL_HEADERS=$(
1877 . $GNUSTEP_CONFIG_FILE
1878 AS_ECHO(["$GNUSTEP_LOCAL_HEADERS"])
1880 GNUSTEP_LOCAL_LIBRARIES=$(
1881 . $GNUSTEP_CONFIG_FILE
1882 AS_ECHO(["$GNUSTEP_LOCAL_LIBRARIES"])
1884 test "x${GNUSTEP_LOCAL_HEADERS}" != "x" && \
1885 GNUSTEP_LOCAL_HEADERS="-I${GNUSTEP_LOCAL_HEADERS}"
1886 test "x${GNUSTEP_LOCAL_LIBRARIES}" != "x" && \
1887 GNUSTEP_LOCAL_LIBRARIES="-L${GNUSTEP_LOCAL_LIBRARIES}"
1888 CPPFLAGS="$CPPFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1889 CFLAGS="$CFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1890 LDFLAGS="$LDFLAGS -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES}"
1891 LIBS_GNUSTEP="-lgnustep-gui -lgnustep-base -lobjc -lpthread"
1892 dnl GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS to 0 or 1.
1893 dnl If they had chosen to either define it or not, we could have
1894 dnl just used AC_CHECK_DECL here.
1895 AC_CACHE_CHECK(if GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS,
1896 emacs_cv_objc_exceptions,
1897 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <GNUstepBase/GSConfig.h>]],
1898 [[#if defined BASE_NATIVE_OBJC_EXCEPTIONS && BASE_NATIVE_OBJC_EXCEPTIONS > 0
1902 #endif]])], emacs_cv_objc_exceptions=yes, emacs_cv_objc_exceptions=no ) )
1903 if test $emacs_cv_objc_exceptions = yes; then
1904 dnl _NATIVE_OBJC_EXCEPTIONS is used by the GNUstep headers.
1905 AC_DEFINE(_NATIVE_OBJC_EXCEPTIONS, 1,
1906 [Define if GNUstep uses ObjC exceptions.])
1907 GNU_OBJC_CFLAGS="-fobjc-exceptions"
1910 if test $NS_IMPL_GNUSTEP = yes; then
1911 ns_appdir=`pwd`/nextstep/Emacs.app
1912 ns_appbindir=${ns_appdir}
1913 ns_appresdir=${ns_appdir}/Resources
1914 ns_appsrc=GNUstep/Emacs.base
1915 ns_fontfile=nsfont.o
1918 dnl This is only used while we test the NS headers, it gets reset below.
1919 CPPFLAGS="$CPPFLAGS $GNU_OBJC_CFLAGS"
1920 CFLAGS="$CFLAGS $GNU_OBJC_CFLAGS"
1922 AC_CHECK_HEADER([AppKit/AppKit.h], [HAVE_NS=yes],
1923 [AC_MSG_ERROR([The include files (AppKit/AppKit.h etc) that
1924 are required for a Nextstep build are missing or cannot be compiled.
1925 Either fix this, or re-configure with the option '--without-ns'.])])
1928 if test "${NS_IMPL_COCOA}" = "yes"; then
1929 AC_MSG_CHECKING([for Mac OS X 10.6 or newer])
1930 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <AppKit/AppKit.h>],
1932 #ifdef MAC_OS_X_VERSION_MAX_ALLOWED
1933 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
1936 error "Mac OS X 10.6 or newer required";
1940 ns_osx_have_106=yes,
1942 AC_MSG_RESULT([$ns_osx_have_106])
1944 if test $ns_osx_have_106 = no; then
1945 AC_MSG_ERROR([Mac OS X 10.6 or newer is required]);
1950 AC_SUBST(LIBS_GNUSTEP)
1952 INSTALL_ARCH_INDEP_EXTRA=install-etc
1953 ns_self_contained=no
1956 if test "${HAVE_NS}" = yes; then
1957 if test "$with_toolkit_scroll_bars" = "no"; then
1958 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for Nextstep.])
1961 window_system=nextstep
1962 # set up packaging dirs
1963 if test "${EN_NS_SELF_CONTAINED}" = yes; then
1964 ns_self_contained=yes
1965 prefix=${ns_appresdir}
1966 exec_prefix=${ns_appbindir}
1967 dnl This one isn't really used, only archlibdir is.
1968 libexecdir="\${ns_appbindir}/libexec"
1969 archlibdir="\${ns_appbindir}/libexec"
1970 etcdocdir="\${ns_appresdir}/etc"
1971 etcdir="\${ns_appresdir}/etc"
1972 dnl FIXME maybe set datarootdir instead.
1973 dnl That would also get applications, icons, man.
1974 infodir="\${ns_appresdir}/info"
1975 mandir="\${ns_appresdir}/man"
1976 lispdir="\${ns_appresdir}/lisp"
1977 test "$locallisppathset" = no && locallisppath=""
1978 INSTALL_ARCH_INDEP_EXTRA=
1981 NS_OBJC_OBJ="nsterm.o nsfns.o nsmenu.o nsselect.o nsimage.o $ns_fontfile"
1983 CFLAGS="$tmp_CFLAGS"
1984 CPPFLAGS="$tmp_CPPFLAGS"
1985 AC_SUBST(INSTALL_ARCH_INDEP_EXTRA)
1986 AC_SUBST(ns_self_contained)
1988 AC_SUBST(NS_OBJC_OBJ)
1990 if test "${HAVE_NS}" = yes; then
1992 [if the Objective C compiler supports instancetype],
1993 [emacs_cv_objc_instancetype],
1994 [AC_LANG_PUSH([Objective C])
1996 [AC_LANG_SOURCE([[@interface Test
1997 + (instancetype)test;
1999 emacs_cv_objc_instancetype=yes,
2000 emacs_cv_objc_instancetype=no)
2001 AC_LANG_POP([Objective C])])
2003 if test x$emacs_cv_objc_instancetype = xyes ; then
2004 AC_DEFINE(NATIVE_OBJC_INSTANCETYPE, 1,
2005 [Define if ObjC compiler supports instancetype natively.])
2017 if test "${with_w32}" != no; then
2020 AC_CHECK_HEADER([windows.h], [HAVE_W32=yes],
2021 [AC_MSG_ERROR(['--with-w32' was specified, but windows.h
2022 cannot be found.])])
2025 ## Using --with-w32 with MinGW is a no-op, but we allow it.
2028 AC_MSG_ERROR([Using w32 with an autotools build is only supported for Cygwin and MinGW32.])
2033 if test "${opsys}" = "mingw32"; then
2034 AC_CACHE_CHECK([whether Windows API headers are recent enough], [emacs_cv_w32api],
2035 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2036 #include <windows.h>
2037 #include <usp10.h>]],
2038 [[PIMAGE_NT_HEADERS pHeader;
2039 PIMAGE_SECTION_HEADER pSection = IMAGE_FIRST_SECTION(pHeader)]])],
2040 [emacs_cv_w32api=yes], [emacs_cv_w32api=no])])
2041 if test "${emacs_cv_w32api}" = "no"; then
2042 AC_MSG_ERROR([the Windows API headers are too old to support this build.])
2044 HAVE_W32=${emacs_cv_w32api}
2054 if test "${HAVE_W32}" = "yes"; then
2055 AC_DEFINE(HAVE_NTGUI, 1, [Define to use native MS Windows GUI.])
2056 if test "$with_toolkit_scroll_bars" = "no"; then
2057 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for w32 build.])
2059 AC_CHECK_TOOL(WINDRES, [windres],
2060 [AC_MSG_ERROR([No resource compiler found.])])
2061 W32_OBJ="w32fns.o w32menu.o w32reg.o w32font.o w32term.o"
2062 W32_OBJ="$W32_OBJ w32xfns.o w32select.o w32uniscribe.o w32cygwinx.o"
2063 EMACSRES="emacs.res"
2064 case "$canonical" in
2065 x86_64-*-*) EMACS_MANIFEST="emacs-x64.manifest" ;;
2066 *) EMACS_MANIFEST="emacs-x86.manifest" ;;
2068 dnl Construct something of the form "24,4,0,0" with 4 components.
2069 comma_version=`echo "${PACKAGE_VERSION}.0.0" | sed -e 's/\./,/g' -e 's/^\([[^,]]*,[[^,]]*,[[^,]]*,[[^,]]*\).*/\1/'`
2071 comma_space_version=`echo "$comma_version" | sed 's/,/, /g'`
2072 AC_SUBST(comma_version)
2073 AC_SUBST(comma_space_version)
2074 AC_CONFIG_FILES([nt/emacs.rc nt/emacsclient.rc])
2075 if test "${opsys}" = "cygwin"; then
2076 W32_LIBS="$W32_LIBS -lkernel32 -luser32 -lusp10 -lgdi32"
2077 W32_LIBS="$W32_LIBS -lole32 -lcomdlg32 -lcomctl32 -lwinspool"
2078 # Tell the linker that emacs.res is an object (which we compile from
2079 # the rc file), not a linker script.
2080 W32_RES_LINK="-Wl,emacs.res"
2082 W32_OBJ="$W32_OBJ w32.o w32console.o w32heap.o w32inevt.o w32proc.o"
2083 W32_LIBS="$W32_LIBS -lwinmm -lusp10 -lgdi32 -lcomdlg32"
2084 W32_LIBS="$W32_LIBS -lmpr -lwinspool -lole32 -lcomctl32"
2085 W32_RES_LINK="\$(EMACSRES)"
2086 CLIENTRES="emacsclient.res"
2087 CLIENTW="emacsclientw\$(EXEEXT)"
2088 FIRSTFILE_OBJ=firstfile.o
2091 LIBS_ECLIENT="-lcomctl32"
2092 LIB_WSOCK32="-lwsock32"
2093 NTLIB="ntlib.$ac_objext"
2094 XARGS_LIMIT="-s 10000"
2098 if test "${HAVE_W32}" = "no" && test "${opsys}" = "cygwin"; then
2099 W32_LIBS="-lkernel32"
2100 W32_OBJ="w32cygwinx.o"
2106 AC_SUBST(EMACS_MANIFEST)
2109 AC_SUBST(W32_RES_LINK)
2110 AC_SUBST(FIRSTFILE_OBJ)
2113 AC_SUBST(LIBS_ECLIENT)
2114 AC_SUBST(LIB_WSOCK32)
2116 AC_SUBST(XARGS_LIMIT)
2118 if test "${HAVE_W32}" = "yes"; then
2123 ## $window_system is now set to the window system we will
2131 case "${window_system}" in
2136 case "${with_x_toolkit}" in
2137 athena | lucid ) USE_X_TOOLKIT=LUCID ;;
2138 motif ) USE_X_TOOLKIT=MOTIF ;;
2140 term_header=gtkutil.h
2141 dnl Don't set this for GTK. A lot of tests below assumes Xt when
2142 dnl USE_X_TOOLKIT is set.
2143 USE_X_TOOLKIT=none ;;
2144 gtk2 ) with_gtk2=yes
2145 term_header=gtkutil.h
2146 USE_X_TOOLKIT=none ;;
2147 gtk3 ) with_gtk3=yes
2148 term_header=gtkutil.h
2149 USE_X_TOOLKIT=none ;;
2150 no ) USE_X_TOOLKIT=none ;;
2151 dnl If user did not say whether to use a toolkit, make this decision later:
2152 dnl use the toolkit if we have gtk, or X11R5 or newer.
2153 * ) USE_X_TOOLKIT=maybe ;;
2157 term_header=nsterm.h
2160 term_header=w32term.h
2164 if test "$window_system" = none && test "X$with_x" != "Xno"; then
2165 AC_CHECK_PROG(HAVE_XSERVER, X, true, false)
2166 if test "$HAVE_XSERVER" = true ||
2167 test -n "$DISPLAY" ||
2169 for emacs_libX11 in /usr/lib/libX11.*; do break; done
2170 test "$emacs_libX11" != '/usr/lib/libX11.*'
2173 AC_MSG_ERROR([You seem to be running X, but no X development libraries
2174 were found. You should install the relevant development files for X
2175 and for the toolkit you want, such as Gtk+ or Motif. Also make
2176 sure you have development files for image handling, i.e.
2177 tiff, gif, jpeg, png and xpm.
2178 If you are sure you want Emacs compiled without X window support, pass
2184 # Does the opsystem file prohibit the use of the GNU malloc?
2185 # Assume not, until told otherwise.
2189 [whether malloc is Doug Lea style],
2190 [emacs_cv_var_doug_lea_malloc],
2191 [emacs_cv_var_doug_lea_malloc=no
2192 dnl Hooks do not work with address sanitization.
2193 if test "$emacs_cv_sanitize_address" != yes; then
2196 [[#include <malloc.h>
2197 static void hook (void) {}]],
2198 [[malloc_set_state (malloc_get_state ());
2199 __after_morecore_hook = hook;
2200 __malloc_initialize_hook = hook;]])],
2201 [emacs_cv_var_doug_lea_malloc=yes])
2203 doug_lea_malloc=$emacs_cv_var_doug_lea_malloc
2208 test "$CANNOT_DUMP" = yes ||
2210 ## darwin ld insists on the use of malloc routines in the System framework.
2211 darwin | mingw32 | nacl | sol2-10) ;;
2212 cygwin | qnxnto | freebsd)
2215 *) test "$ac_cv_func_sbrk" = yes && system_malloc=$emacs_cv_sanitize_address;;
2218 if test "${system_malloc}" != yes && test "${doug_lea_malloc}" != yes \
2219 && test "${UNEXEC_OBJ}" = unexelf.o; then
2225 if test "${system_malloc}" = "yes"; then
2226 AC_DEFINE([SYSTEM_MALLOC], 1,
2227 [Define to 1 to use the system memory allocator, even if it is not
2231 (The GNU allocators don't work with this system configuration.)"
2233 elif test "$hybrid_malloc" = yes; then
2234 AC_DEFINE(HYBRID_MALLOC, 1,
2235 [Define to use gmalloc before dumping and the system malloc after.])
2238 GNU_MALLOC_reason=" (only before dumping)"
2239 GMALLOC_OBJ=gmalloc.o
2242 test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
2243 VMLIMIT_OBJ=vm-limit.o
2245 AC_CHECK_HEADERS([sys/vlimit.h])
2246 AC_CACHE_CHECK([for data_start], [emacs_cv_data_start],
2249 [[extern char data_start[]; char ch;]],
2250 [[return data_start < &ch;]])],
2251 [emacs_cv_data_start=yes],
2252 [emacs_cv_data_start=no])])
2253 if test $emacs_cv_data_start = yes; then
2254 AC_DEFINE([HAVE_DATA_START], 1,
2255 [Define to 1 if data_start is the address of the start
2256 of the main data segment.])
2259 AC_SUBST([HYBRID_MALLOC])
2260 AC_SUBST(GMALLOC_OBJ)
2261 AC_SUBST(VMLIMIT_OBJ)
2263 if test "$doug_lea_malloc" = "yes" && test "$hybrid_malloc" != yes; then
2264 if test "$GNU_MALLOC" = yes ; then
2266 (Using Doug Lea's new malloc from the GNU C Library.)"
2268 AC_DEFINE(DOUG_LEA_MALLOC, 1,
2269 [Define to 1 if the system memory allocator is Doug Lea style,
2270 with malloc hooks and malloc_set_state.])
2272 ## Use mmap directly for allocating larger buffers.
2273 ## FIXME this comes from src/s/{gnu,gnu-linux}.h:
2274 ## #ifdef DOUG_LEA_MALLOC; #undef REL_ALLOC; #endif
2275 ## Does the AC_FUNC_MMAP test below make this check unnecessary?
2277 mingw32|gnu*) REL_ALLOC=no ;;
2281 if test x"${REL_ALLOC}" = x; then
2282 REL_ALLOC=${GNU_MALLOC}
2285 use_mmap_for_buffers=no
2287 mingw32) use_mmap_for_buffers=yes ;;
2291 if test $use_mmap_for_buffers = yes; then
2292 AC_DEFINE(USE_MMAP_FOR_BUFFERS, 1, [Define to use mmap to allocate buffer text.])
2296 LIBS="$LIBS_SYSTEM $LIBS"
2298 dnl FIXME replace main with a function we actually want from this library.
2299 AC_CHECK_LIB(Xbsd, main, LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -lXbsd")
2301 dnl Check for the POSIX thread library.
2303 AC_CHECK_HEADERS_ONCE(pthread.h)
2304 if test "$ac_cv_header_pthread_h" && test "$opsys" != "mingw32"; then
2305 AC_CACHE_CHECK([for pthread library],
2306 [emacs_cv_pthread_lib],
2307 [emacs_cv_pthread_lib=no
2309 for emacs_pthread_lib in 'none needed' -lpthread; do
2310 case $emacs_pthread_lib in
2311 -*) LIBS="$OLD_LIBS $emacs_pthread_lib";;
2315 [[#include <pthread.h>
2317 sigset_t old_mask, new_mask;
2318 void noop (void) {}]],
2319 [[pthread_t th = pthread_self ();
2321 status += pthread_create (&th, 0, 0, 0);
2322 status += pthread_sigmask (SIG_BLOCK, &new_mask, &old_mask);
2323 status += pthread_kill (th, 0);
2324 #if ! (defined SYSTEM_MALLOC || defined HYBRID_MALLOC \
2325 || defined DOUG_LEA_MALLOC)
2326 /* Test for pthread_atfork only if gmalloc uses it,
2327 as older-style hosts like MirBSD 10 lack it. */
2328 status += pthread_atfork (noop, noop, noop);
2331 [emacs_cv_pthread_lib=$emacs_pthread_lib])
2333 if test "$emacs_cv_pthread_lib" != no; then
2337 if test "$emacs_cv_pthread_lib" != no; then
2338 AC_DEFINE([HAVE_PTHREAD], 1, [Define to 1 if you have POSIX threads.])
2339 case $emacs_cv_pthread_lib in
2340 -*) LIB_PTHREAD=$emacs_cv_pthread_lib;;
2342 ac_cv_func_pthread_sigmask=yes
2343 # Some systems optimize for single-threaded programs by default, and
2344 # need special flags to disable these optimizations. For example, the
2345 # definition of 'errno' in <errno.h>.
2348 AC_DEFINE([_REENTRANT], 1,
2349 [Define to 1 if your system requires this in multithreaded code.]);;
2351 AC_DEFINE([_THREAD_SAFE], 1,
2352 [Define to 1 if your system requires this in multithreaded code.]);;
2356 AC_SUBST([LIB_PTHREAD])
2358 AC_MSG_CHECKING([for thread support])
2360 if test "$with_threads" = yes; then
2361 if test "$emacs_cv_pthread_lib" != no; then
2362 AC_DEFINE(THREADS_ENABLED, 1,
2363 [Define to 1 if you want elisp thread support.])
2365 elif test "${opsys}" = "mingw32"; then
2366 dnl MinGW can do native Windows threads even without pthreads
2367 AC_DEFINE(THREADS_ENABLED, 1,
2368 [Define to 1 if you want elisp thread support.])
2372 AC_MSG_RESULT([$threads_enabled])
2374 dnl Check for need for bigtoc support on IBM AIX
2378 AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
2380 yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
2381 *) gdb_cv_bigtoc=-bbigtoc ;;
2384 LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
2385 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[int i;]])], [], [gdb_cv_bigtoc=])
2390 # Change CFLAGS, CPPFLAGS, and LIBS temporarily so that C_SWITCH_X_SITE
2391 # is for the tests that follow. We set them back later on.
2393 REAL_CFLAGS="$CFLAGS"
2394 REAL_CPPFLAGS="$CPPFLAGS"
2397 if test "${HAVE_X11}" = "yes"; then
2398 DEFS="$C_SWITCH_X_SITE $DEFS"
2399 LDFLAGS="$LDFLAGS $LD_SWITCH_X_SITE"
2401 CFLAGS="$C_SWITCH_X_SITE $CFLAGS"
2402 CPPFLAGS="$C_SWITCH_X_SITE $CPPFLAGS"
2404 # On Solaris, arrange for LD_RUN_PATH to point to the X libraries for tests.
2405 # This is handled by LD_SWITCH_X_SITE_RPATH during the real build,
2406 # but it's more convenient here to set LD_RUN_PATH since this
2407 # also works on hosts that don't understand LD_SWITCH_X_SITE_RPATH.
2408 if test "${x_libraries}" != NONE && test -n "${x_libraries}"; then
2409 LD_RUN_PATH=$x_libraries${LD_RUN_PATH+:}$LD_RUN_PATH
2413 if test "${opsys}" = "gnu-linux"; then
2414 AC_CACHE_CHECK([whether X on GNU/Linux needs -b to link], [emacs_cv_b_link],
2415 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2416 [[XOpenDisplay ("foo");]])],
2417 [xgnu_linux_first_failure=no],
2418 [xgnu_linux_first_failure=yes])
2419 if test "${xgnu_linux_first_failure}" = "yes"; then
2420 OLD_CPPFLAGS="$CPPFLAGS"
2422 CPPFLAGS="$CPPFLAGS -b i486-linuxaout"
2423 LIBS="$LIBS -b i486-linuxaout"
2424 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2425 [[XOpenDisplay ("foo");]])],
2426 [xgnu_linux_second_failure=no],
2427 [xgnu_linux_second_failure=yes])
2428 if test "${xgnu_linux_second_failure}" = "yes"; then
2429 # If we get the same failure with -b, there is no use adding -b.
2430 # So leave it out. This plays safe.
2435 CPPFLAGS=$OLD_CPPFLAGS
2440 if test "x$emacs_cv_b_link" = xyes ; then
2441 LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -b i486-linuxaout"
2442 C_SWITCH_X_SITE="$C_SWITCH_X_SITE -b i486-linuxaout"
2446 # Reportedly, some broken Solaris systems have XKBlib.h but are missing
2447 # header files included from there.
2448 AC_CACHE_CHECK([for Xkb], [emacs_cv_xkb],
2449 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>
2450 #include <X11/XKBlib.h>]],
2451 [[XkbDescPtr kb = XkbGetKeyboard (0, XkbAllComponentsMask, XkbUseCoreKbd);]])],
2452 emacs_cv_xkb=yes, emacs_cv_xkb=no)])
2453 if test $emacs_cv_xkb = yes; then
2454 AC_DEFINE(HAVE_XKB, 1, [Define to 1 if you have the Xkb extension.])
2457 AC_CHECK_FUNCS(XrmSetDatabase XScreenResourceString \
2458 XScreenNumberOfScreen)
2461 if test "${window_system}" = "x11"; then
2462 AC_MSG_CHECKING(X11 version 6)
2463 AC_CACHE_VAL(emacs_cv_x11_version_6,
2464 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]],
2465 [[#if XlibSpecificationRelease < 6
2468 ]])], emacs_cv_x11_version_6=yes, emacs_cv_x11_version_6=no)])
2469 if test $emacs_cv_x11_version_6 = yes; then
2470 AC_MSG_RESULT(6 or newer)
2471 AC_DEFINE(HAVE_X11R6, 1,
2472 [Define to 1 if you have the X11R6 or newer version of Xlib.])
2473 AC_DEFINE(HAVE_X_I18N, 1, [Define if you have usable i18n support.])
2474 ## inoue@ainet.or.jp says Solaris has a bug related to X11R6-style
2478 *) AC_DEFINE(HAVE_X11R6_XIM, 1,
2479 [Define if you have usable X11R6-style XIM support.])
2483 AC_MSG_RESULT(before 6)
2488 ### Use -lrsvg-2 if available, unless '--with-rsvg=no' is specified.
2490 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${opsys}" = "mingw32"; then
2491 if test "${with_rsvg}" != "no"; then
2492 RSVG_REQUIRED=2.11.0
2493 RSVG_MODULE="librsvg-2.0 >= $RSVG_REQUIRED"
2495 EMACS_CHECK_MODULES([RSVG], [$RSVG_MODULE])
2496 AC_SUBST(RSVG_CFLAGS)
2499 if test $HAVE_RSVG = yes; then
2500 AC_DEFINE(HAVE_RSVG, 1, [Define to 1 if using librsvg.])
2501 CFLAGS="$CFLAGS $RSVG_CFLAGS"
2502 # Windows loads librsvg dynamically
2503 if test "${opsys}" = "mingw32"; then
2511 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${HAVE_W32}" = "yes"; then
2512 if test "${with_imagemagick}" != "no"; then
2513 if test -n "$BREW"; then
2514 # Homebrew doesn't link ImageMagick 6 by default, so make sure
2515 # pkgconfig can find it.
2516 export PKG_CONFIG_PATH="$PKG_CONFIG_PATH$PATH_SEPARATOR`$BREW --prefix imagemagick@6 2>/dev/null`/lib/pkgconfig"
2519 ## 6.3.5 is the earliest version known to work; see Bug#17339.
2520 ## 6.8.2 makes Emacs crash; see Bug#13867.
2521 ## 7 and later have not been ported to; See Bug#25967.
2522 IMAGEMAGICK_MODULE="Wand >= 6.3.5 Wand != 6.8.2 Wand < 7"
2523 EMACS_CHECK_MODULES([IMAGEMAGICK], [$IMAGEMAGICK_MODULE])
2525 if test $HAVE_IMAGEMAGICK = yes; then
2528 CFLAGS="$CFLAGS $IMAGEMAGICK_CFLAGS"
2529 LIBS="$IMAGEMAGICK_LIBS $LIBS"
2530 AC_CHECK_FUNCS([MagickRelinquishMemory MagickExportImagePixels \
2531 MagickMergeImageLayers MagickAutoOrientImage])
2534 # Check that ImageMagick links. It does not link on Fedora 25
2535 # with './configure CC=clang', as pkg-config outputs flags like
2536 # -lomp that work for GCC but not Clang.
2537 if test "$ac_cv_func_MagickRelinquishMemory" != yes; then
2541 if test $HAVE_IMAGEMAGICK = yes; then
2542 AC_DEFINE([HAVE_IMAGEMAGICK], 1, [Define to 1 if using ImageMagick.])
2547 AC_SUBST([IMAGEMAGICK_CFLAGS])
2548 AC_SUBST([IMAGEMAGICK_LIBS])
2552 AC_CHECK_LIB(anl, getaddrinfo_a, HAVE_GETADDRINFO_A=yes)
2553 if test "${HAVE_GETADDRINFO_A}" = "yes"; then
2554 AC_DEFINE(HAVE_GETADDRINFO_A, 1,
2555 [Define to 1 if you have getaddrinfo_a for asynchronous DNS resolution.])
2556 GETADDRINFO_A_LIBS="-lanl"
2557 AC_SUBST(GETADDRINFO_A_LIBS)
2562 gtk_term_header=$term_header
2565 if test "${opsys}" != "mingw32"; then
2566 if test "${with_gtk3}" = "yes" || test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
2569 GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2571 dnl Checks for libraries.
2572 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2573 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2574 if test "$pkg_check_gtk" = "no" && test "$with_gtk3" = "yes"; then
2575 AC_MSG_ERROR($GTK_PKG_ERRORS)
2577 if test "$pkg_check_gtk" = "yes"; then
2578 AC_DEFINE(HAVE_GTK3, 1, [Define to 1 if using GTK 3 or later.])
2579 GTK_OBJ=emacsgtkfixed.o
2580 gtk_term_header=gtkutil.h
2581 USE_GTK_TOOLKIT="GTK3"
2582 if test "x$ac_enable_gtk_deprecation_warnings" = x; then
2583 AC_DEFINE([GDK_DISABLE_DEPRECATION_WARNINGS], [1],
2584 [Define to 1 to disable GTK+/GDK deprecation warnings.])
2585 AC_DEFINE([GLIB_DISABLE_DEPRECATION_WARNINGS], [1],
2586 [Define to 1 to disable Glib deprecation warnings.])
2590 gtk3_pkg_errors="$GTK_PKG_ERRORS "
2594 if test "${with_gtk2}" = "yes" || test "$check_gtk2" = "yes"; then
2597 GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2599 dnl Checks for libraries.
2600 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2601 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2602 if test "$pkg_check_gtk" = "no" &&
2603 { test "$with_gtk" = yes || test "$with_gtk2" = "yes"; }
2605 AC_MSG_ERROR($gtk3_pkg_errors$GTK_PKG_ERRORS)
2607 test "$pkg_check_gtk" = "yes" && USE_GTK_TOOLKIT="GTK2"
2614 if test x"$pkg_check_gtk" = xyes; then
2617 CFLAGS="$CFLAGS $GTK_CFLAGS"
2618 LIBS="$GTK_LIBS $LIBS"
2619 dnl Try to compile a simple GTK program.
2620 AC_CACHE_CHECK([whether GTK compiles], [emacs_cv_gtk_compiles],
2623 [[/* Check the Gtk and Glib APIs. */
2624 #include <gtk/gtk.h>
2625 #include <glib-object.h>
2627 callback (GObject *go, GParamSpec *spec, gpointer user_data)
2631 GtkSettings *gs = 0;
2632 /* Use G_CALLBACK to make sure function pointers can be cast to void *;
2633 strict C prohibits this. Use gtk_main_iteration to test that the
2634 libraries are there. */
2635 if (g_signal_handler_find (G_OBJECT (gs), G_SIGNAL_MATCH_FUNC,
2636 0, 0, 0, G_CALLBACK (callback), 0))
2637 gtk_main_iteration ();
2639 [emacs_cv_gtk_compiles=yes], [emacs_cv_gtk_compiles=no])])
2640 if test "${emacs_cv_gtk_compiles}" != "yes"; then
2642 if test "$USE_X_TOOLKIT" != "maybe"; then
2643 AC_MSG_ERROR([Gtk+ wanted, but it does not compile, see config.log. Maybe some x11-devel files missing?]);
2646 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $GTK_CFLAGS"
2648 AC_DEFINE(USE_GTK, 1, [Define to 1 if using GTK.])
2649 GTK_OBJ="gtkutil.o $GTK_OBJ"
2650 term_header=$gtk_term_header
2652 AC_MSG_WARN([[Your version of Gtk+ will have problems with
2653 closing open displays. This is no problem if you just use
2654 one display, but if you use more than one and close one of them
2656 See https://gitlab.gnome.org/GNOME/gtk/issues/221]])
2663 if test "${HAVE_GTK}" = "yes"; then
2665 dnl GTK scrollbars resemble toolkit scrollbars a lot, so to avoid
2666 dnl a lot if #ifdef:s, say we have toolkit scrollbars.
2667 if test "$with_toolkit_scroll_bars" != no; then
2668 with_toolkit_scroll_bars=yes
2671 dnl Check if we have the old file selection dialog declared and
2672 dnl in the link library. In 2.x it may be in the library,
2673 dnl but not declared if deprecated featured has been selected out.
2674 dnl AC_CHECK_DECL checks for a macro, so check for GTK_TYPE_FILE_SELECTION.
2675 HAVE_GTK_FILE_SELECTION=no
2676 AC_CHECK_DECL(GTK_TYPE_FILE_SELECTION, HAVE_GTK_FILE_SELECTION=yes,
2677 HAVE_GTK_FILE_SELECTION=no, [AC_INCLUDES_DEFAULT
2678 #include <gtk/gtk.h>])
2679 if test "$HAVE_GTK_FILE_SELECTION" = yes; then
2680 AC_CHECK_FUNCS(gtk_file_selection_new)
2683 dnl Same as above for gtk_handle_box.
2684 HAVE_GTK_HANDLE_BOX=no
2685 AC_CHECK_DECL(GTK_TYPE_HANDLE_BOX, HAVE_GTK_HANDLE_BOX=yes,
2686 HAVE_GTK_HANDLE_BOX=no, [AC_INCLUDES_DEFAULT
2687 #include <gtk/gtk.h>])
2688 if test "$HAVE_GTK_HANDLE_BOX" = yes; then
2689 AC_CHECK_FUNCS(gtk_handle_box_new)
2692 dnl Same as above for gtk_tearoff_menu_item.
2693 HAVE_GTK_TEAROFF_MENU_ITEM=no
2694 AC_CHECK_DECL(GTK_TYPE_TEAROFF_MENU_ITEM, HAVE_GTK_TEAROFF_MENU_ITEM=yes,
2695 HAVE_GTK_TEAROFF_MENU_ITEM=no, [AC_INCLUDES_DEFAULT
2696 #include <gtk/gtk.h>])
2697 if test "$HAVE_GTK_TEAROFF_MENU_ITEM" = yes; then
2698 AC_CHECK_FUNCS(gtk_tearoff_menu_item_new)
2701 dnl Check for functions introduced in 2.14 and later.
2702 AC_CHECK_FUNCS(gtk_widget_get_window gtk_widget_set_has_window \
2703 gtk_dialog_get_action_area gtk_widget_get_sensitive \
2704 gtk_widget_get_mapped gtk_adjustment_get_page_size \
2705 gtk_orientable_set_orientation \
2706 gtk_window_set_has_resize_grip)
2708 term_header=gtkutil.h
2712 dnl Enable xwidgets if GTK3 and WebKitGTK+ are available.
2715 if test "$with_xwidgets" != "no"; then
2716 test "$USE_GTK_TOOLKIT" = "GTK3" && test "$window_system" != "none" ||
2717 AC_MSG_ERROR([xwidgets requested but gtk3 not used.])
2719 WEBKIT_REQUIRED=2.12
2720 WEBKIT_MODULES="webkit2gtk-4.0 >= $WEBKIT_REQUIRED"
2721 EMACS_CHECK_MODULES([WEBKIT], [$WEBKIT_MODULES])
2722 HAVE_XWIDGETS=$HAVE_WEBKIT
2723 test $HAVE_XWIDGETS = yes ||
2724 AC_MSG_ERROR([xwidgets requested but WebKitGTK+ not found.])
2726 XWIDGETS_OBJ=xwidget.o
2727 AC_DEFINE([HAVE_XWIDGETS], 1, [Define to 1 if you have xwidgets support.])
2729 AC_SUBST(XWIDGETS_OBJ)
2734 dnl D-Bus has been tested under GNU/Linux only. Must be adapted for
2735 dnl other platforms.
2738 if test "${with_dbus}" = "yes"; then
2739 EMACS_CHECK_MODULES([DBUS], [dbus-1 >= 1.0])
2740 if test "$HAVE_DBUS" = yes; then
2741 AC_DEFINE(HAVE_DBUS, 1, [Define to 1 if using D-Bus.])
2742 dnl dbus_watch_get_unix_fd has been introduced in D-Bus 1.1.1.
2743 dnl dbus_type_is_valid and dbus_validate_* have been introduced in
2746 LIBS="$LIBS $DBUS_LIBS"
2747 AC_CHECK_FUNCS(dbus_watch_get_unix_fd \
2748 dbus_type_is_valid \
2749 dbus_validate_bus_name \
2750 dbus_validate_path \
2751 dbus_validate_interface \
2752 dbus_validate_member)
2757 AC_SUBST(DBUS_CFLAGS)
2761 dnl GSettings has been tested under GNU/Linux only.
2763 if test "${HAVE_X11}" = "yes" && test "${with_gsettings}" = "yes"; then
2764 EMACS_CHECK_MODULES([GSETTINGS], [gio-2.0 >= 2.26])
2765 if test "$HAVE_GSETTINGS" = "yes"; then
2767 CFLAGS="$CFLAGS $GSETTINGS_CFLAGS"
2769 LIBS="$LIBS $GSETTINGS_LIBS"
2770 AC_CACHE_CHECK([whether GSettings is in gio], [emacs_cv_gsettings_in_gio],
2773 [[/* Check that gsettings really is present. */
2774 #include <glib-object.h>
2775 #include <gio/gio.h>
2778 GSettings *settings;
2779 GVariant *val = g_settings_get_value (settings, "");
2781 [emacs_cv_gsettings_in_gio=yes], [emacs_cv_gsettings_in_gio=no])])
2783 if test "$emacs_cv_gsettings_in_gio" = "yes"; then
2784 AC_DEFINE(HAVE_GSETTINGS, 1, [Define to 1 if using GSettings.])
2785 SETTINGS_CFLAGS="$GSETTINGS_CFLAGS"
2786 SETTINGS_LIBS="$GSETTINGS_LIBS"
2787 test "$with_gconf" = "yes" || with_gconf=no
2794 dnl GConf has been tested under GNU/Linux only.
2795 dnl The version is really arbitrary, it is about the same age as Gtk+ 2.6.
2797 if test "${HAVE_X11}" = "yes" && test "${with_gconf}" != "no"; then
2798 EMACS_CHECK_MODULES([GCONF], [gconf-2.0 >= 2.13])
2799 if test "$HAVE_GCONF" = yes; then
2800 AC_DEFINE(HAVE_GCONF, 1, [Define to 1 if using GConf.])
2801 dnl Newer GConf doesn't link with g_objects, so this is not defined.
2802 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GCONF_CFLAGS"
2803 SETTINGS_LIBS="$SETTINGS_LIBS $GCONF_LIBS"
2807 if test "$HAVE_GSETTINGS" = "yes" || test "$HAVE_GCONF" = "yes"; then
2808 EMACS_CHECK_MODULES([GOBJECT], [gobject-2.0 >= 2.0])
2809 if test "$HAVE_GOBJECT" = "yes"; then
2810 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GOBJECT_CFLAGS"
2811 SETTINGS_LIBS="$SETTINGS_LIBS $GOBJECT_LIBS"
2813 SAVE_CFLAGS="$CFLAGS"
2815 CFLAGS="$SETTINGS_CFLAGS $CFLAGS"
2816 LIBS="$SETTINGS_LIBS $LIBS"
2817 CFLAGS="$SAVE_CFLAGS"
2820 AC_SUBST(SETTINGS_CFLAGS)
2821 AC_SUBST(SETTINGS_LIBS)
2824 dnl SELinux is available for GNU/Linux only.
2827 if test "${with_selinux}" = "yes"; then
2828 AC_CHECK_LIB([selinux], [lgetfilecon], HAVE_LIBSELINUX=yes, HAVE_LIBSELINUX=no)
2829 if test "$HAVE_LIBSELINUX" = yes; then
2830 AC_DEFINE(HAVE_LIBSELINUX, 1, [Define to 1 if using SELinux.])
2831 LIBSELINUX_LIBS=-lselinux
2834 AC_SUBST(LIBSELINUX_LIBS)
2837 if test "${with_gnutls}" = "yes" ; then
2838 EMACS_CHECK_MODULES([LIBGNUTLS], [gnutls >= 2.12.2],
2839 [HAVE_GNUTLS=yes], [HAVE_GNUTLS=no])
2840 if test "${HAVE_GNUTLS}" = "yes"; then
2841 AC_DEFINE(HAVE_GNUTLS, 1, [Define if using GnuTLS.])
2844 # Windows loads GnuTLS dynamically
2845 if test "${opsys}" = "mingw32"; then
2850 AC_SUBST(LIBGNUTLS_LIBS)
2851 AC_SUBST(LIBGNUTLS_CFLAGS)
2854 if test "${with_libsystemd}" = "yes" ; then
2855 dnl This code has been tested with libsystemd 222 and later.
2856 dnl FIXME: Find the earliest version number for which Emacs should work,
2857 dnl and change '222' to that number.
2858 EMACS_CHECK_MODULES([LIBSYSTEMD], [libsystemd >= 222],
2859 [HAVE_LIBSYSTEMD=yes], [HAVE_LIBSYSTEMD=no])
2860 if test "${HAVE_LIBSYSTEMD}" = "yes"; then
2861 AC_DEFINE(HAVE_LIBSYSTEMD, 1, [Define if using libsystemd.])
2865 AC_SUBST(LIBSYSTEMD_LIBS)
2866 AC_SUBST(LIBSYSTEMD_CFLAGS)
2871 if test "${with_json}" = yes; then
2872 EMACS_CHECK_MODULES([JSON], [jansson >= 2.7],
2873 [HAVE_JSON=yes], [HAVE_JSON=no])
2874 if test "${HAVE_JSON}" = yes; then
2875 AC_DEFINE(HAVE_JSON, 1, [Define if using Jansson.])
2879 # Windows loads libjansson dynamically
2880 if test "${opsys}" = "mingw32"; then
2886 AC_SUBST(JSON_CFLAGS)
2892 dnl MS Windows native file monitor is available for mingw32 only.
2893 case $with_file_notification,$opsys in
2895 AC_MSG_ERROR(['--with-file-notification=w32' was specified, but
2896 this is only supported on MS-Windows native and MinGW32 builds.
2897 Consider using gfile instead.])
2899 w32,* | yes,mingw32)
2900 AC_CHECK_HEADER(windows.h)
2901 if test "$ac_cv_header_windows_h" = yes ; then
2902 AC_DEFINE(HAVE_W32NOTIFY, 1, [Define to 1 to use w32notify.])
2903 NOTIFY_OBJ=w32notify.o
2904 NOTIFY_SUMMARY="yes (w32)"
2908 dnl inotify is available only on GNU/Linux.
2909 case $with_file_notification,$NOTIFY_OBJ in
2911 AC_CHECK_HEADER(sys/inotify.h)
2912 if test "$ac_cv_header_sys_inotify_h" = yes ; then
2913 AC_CHECK_FUNC(inotify_init1)
2914 if test "$ac_cv_func_inotify_init1" = yes; then
2915 AC_DEFINE(HAVE_INOTIFY, 1, [Define to 1 to use inotify.])
2916 NOTIFY_OBJ=inotify.o
2917 NOTIFY_SUMMARY="yes -lglibc (inotify)"
2922 dnl kqueue is available on BSD-like systems.
2923 case $with_file_notification,$NOTIFY_OBJ in
2925 EMACS_CHECK_MODULES([KQUEUE], [libkqueue])
2926 if test "$HAVE_KQUEUE" = "yes"; then
2927 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2928 CPPFLAGS="$CPPFLAGS -I/usr/include/kqueue"
2929 NOTIFY_CFLAGS=$KQUEUE_CFLAGS
2930 NOTIFY_LIBS=$KQUEUE_LIBS
2932 NOTIFY_SUMMARY="yes -lkqueue"
2934 AC_SEARCH_LIBS(kqueue, [])
2935 if test "$ac_cv_search_kqueue" != no; then
2936 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2938 NOTIFY_SUMMARY="yes (kqueue)"
2943 dnl g_file_monitor exists since glib 2.18. G_FILE_MONITOR_EVENT_MOVED
2944 dnl has been added in glib 2.24. It has been tested under
2946 case $with_file_notification,$NOTIFY_OBJ in
2948 if test "${HAVE_NS}" = yes; then
2949 AC_MSG_ERROR(['--with-file-notification=gfile' is not supported in NextStep builds.
2950 Consider kqueue instead.])
2952 EMACS_CHECK_MODULES([GFILENOTIFY], [gio-2.0 >= 2.24])
2953 if test "$HAVE_GFILENOTIFY" = "yes"; then
2954 AC_DEFINE(HAVE_GFILENOTIFY, 1, [Define to 1 if using GFile.])
2955 NOTIFY_CFLAGS=$GFILENOTIFY_CFLAGS
2956 NOTIFY_LIBS=$GFILENOTIFY_LIBS
2957 NOTIFY_OBJ=gfilenotify.o
2958 NOTIFY_SUMMARY="yes -lgio (gfile)"
2963 case $with_file_notification,$NOTIFY_OBJ in
2964 yes,* | no,* | *,?*) ;;
2965 *) AC_MSG_ERROR([File notification '$with_file_notification' requested but requirements not found.]) ;;
2968 if test -n "$NOTIFY_OBJ"; then
2969 AC_DEFINE(USE_FILE_NOTIFY, 1, [Define to 1 if using file notifications.])
2971 AC_SUBST(NOTIFY_CFLAGS)
2972 AC_SUBST(NOTIFY_LIBS)
2973 AC_SUBST(NOTIFY_OBJ)
2975 dnl Do not put whitespace before the #include statements below.
2976 dnl Older compilers (eg sunos4 cc) choke on it.
2979 if test x"${USE_X_TOOLKIT}" = xmaybe || test x"${USE_X_TOOLKIT}" = xLUCID; then
2980 if test "$with_xaw3d" != no; then
2981 AC_CACHE_VAL(emacs_cv_xaw3d,
2982 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
2983 #include <X11/Intrinsic.h>
2984 #include <X11/Xaw3d/Simple.h>]],
2986 [AC_CHECK_LIB(Xaw3d, XawScrollbarSetThumb,
2987 emacs_cv_xaw3d=yes, emacs_cv_xaw3d=no)],
2988 emacs_cv_xaw3d=no)])
2992 if test $emacs_cv_xaw3d = yes; then
2993 AC_MSG_CHECKING(for xaw3d)
2994 AC_MSG_RESULT([yes; using Lucid toolkit])
2998 AC_DEFINE(HAVE_XAW3D, 1,
2999 [Define to 1 if you have the Xaw3d library (-lXaw3d).])
3001 AC_MSG_CHECKING(for xaw3d)
3003 AC_MSG_CHECKING(for libXaw)
3004 AC_CACHE_VAL(emacs_cv_xaw,
3005 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
3006 #include <X11/Intrinsic.h>
3007 #include <X11/Xaw/Simple.h>]],
3011 if test $emacs_cv_xaw = yes; then
3012 AC_MSG_RESULT([yes; using Lucid toolkit])
3015 elif test x"${USE_X_TOOLKIT}" = xLUCID; then
3016 AC_MSG_ERROR([Lucid toolkit requires X11/Xaw include files])
3018 AC_MSG_ERROR([No X toolkit could be found.
3019 If you are sure you want Emacs compiled without an X toolkit, pass
3021 to configure. Otherwise, install the development libraries for the toolkit
3022 that you want to use (e.g. Gtk+) and re-run configure.])
3027 X_TOOLKIT_TYPE=$USE_X_TOOLKIT
3031 if test "${USE_X_TOOLKIT}" != "none"; then
3032 AC_MSG_CHECKING(X11 toolkit version)
3033 AC_CACHE_VAL(emacs_cv_x11_toolkit_version_6,
3034 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Intrinsic.h>]],
3035 [[#if XtSpecificationRelease < 6
3038 ]])], emacs_cv_x11_toolkit_version_6=yes, emacs_cv_x11_toolkit_version_6=no)])
3039 HAVE_X11XTR6=$emacs_cv_x11_toolkit_version_6
3040 if test $emacs_cv_x11_toolkit_version_6 = yes; then
3041 AC_MSG_RESULT(6 or newer)
3042 AC_DEFINE(HAVE_X11XTR6, 1,
3043 [Define to 1 if you have the X11R6 or newer version of Xt.])
3044 LIBXTR6="-lSM -lICE"
3046 ## Use libw.a along with X11R6 Xt.
3047 unixware) LIBXTR6="$LIBXTR6 -lw" ;;
3050 AC_MSG_RESULT(before 6)
3053 dnl If using toolkit, check whether libXmu.a exists.
3054 dnl tranle@intellicorp.com says libXmu.a can need XtMalloc in libXt.a to link.
3056 if test x$HAVE_X11XTR6 = xyes; then
3057 OTHERLIBS='-lXt -lSM -lICE'
3061 AC_SEARCH_LIBS([XmuConvertStandardSelection], [Xmu], [], [], [$OTHERLIBS])
3062 if test "X$LIBS" != "X$OLDLIBS"; then
3063 LIBXMU=$ac_cv_search_XmuConvertStandardSelection
3066 dnl ac_cv_search_XmuConvertStandardSelection is also referenced below.
3072 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3073 # OpenMotif may be installed in such a way on some GNU/Linux systems.
3074 if test -d /usr/include/openmotif; then
3075 CPPFLAGS="-I/usr/include/openmotif $CPPFLAGS"
3076 emacs_cv_openmotif=yes
3077 case "$canonical" in
3078 x86_64-*-linux-gnu* | powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*)
3079 test -d /usr/lib64/openmotif && LDFLAGS="-L/usr/lib64/openmotif $LDFLAGS"
3082 test -d /usr/lib/openmotif && LDFLAGS="-L/usr/lib/openmotif $LDFLAGS"
3085 emacs_cv_openmotif=no
3087 AC_CACHE_CHECK(for (Open)Motif version 2.1, emacs_cv_motif_version_2_1,
3088 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <Xm/Xm.h>]],
3089 [[#if XmVERSION > 2 || (XmVERSION == 2 && XmREVISION >= 1)
3092 Motif version prior to 2.1.
3094 emacs_cv_motif_version_2_1=yes, emacs_cv_motif_version_2_1=no)])
3095 if test $emacs_cv_motif_version_2_1 = yes; then
3096 AC_CHECK_LIB(Xp, XpCreateContext, LIBXP=-lXp)
3097 if test x$emacs_cv_openmotif = xyes; then
3098 REAL_CPPFLAGS="-I/usr/include/openmotif $REAL_CPPFLAGS"
3101 AC_CACHE_CHECK(for LessTif where some systems put it, emacs_cv_lesstif,
3102 # We put this in CFLAGS temporarily to precede other -I options
3103 # that might be in CFLAGS temporarily.
3104 # We put this in CPPFLAGS where it precedes the other -I options.
3105 OLD_CPPFLAGS=$CPPFLAGS
3107 CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CPPFLAGS"
3108 CFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CFLAGS"
3109 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include </usr/X11R6/LessTif/Motif1.2/include/Xm/Xm.h>]],
3111 emacs_cv_lesstif=yes, emacs_cv_lesstif=no)])
3112 if test $emacs_cv_lesstif = yes; then
3113 # Make sure this -I option remains in CPPFLAGS after it is set
3114 # back to REAL_CPPFLAGS.
3115 # There is no need to change REAL_CFLAGS, because REAL_CFLAGS does not
3116 # have those other -I options anyway. Ultimately, having this
3117 # directory ultimately in CPPFLAGS will be enough.
3118 REAL_CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $REAL_CPPFLAGS"
3119 LDFLAGS="-L/usr/X11R6/LessTif/Motif1.2/lib $LDFLAGS"
3122 CPPFLAGS=$OLD_CPPFLAGS
3125 AC_CHECK_HEADER([Xm/BulletinB.h], [],
3126 [AC_MSG_ERROR([Motif toolkit requested but requirements not found.])])
3129 dnl Use toolkit scroll bars if configured for GTK or X toolkit and either
3130 dnl using Motif or Xaw3d is available, and unless
3131 dnl --with-toolkit-scroll-bars=no was specified.
3133 AH_TEMPLATE(USE_TOOLKIT_SCROLL_BARS,
3134 [Define to 1 if we should use toolkit scroll bars.])dnl
3135 USE_TOOLKIT_SCROLL_BARS=no
3136 if test "${with_toolkit_scroll_bars}" != "no"; then
3137 if test "${USE_X_TOOLKIT}" != "none"; then
3138 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3139 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3141 USE_TOOLKIT_SCROLL_BARS=yes
3142 elif test "${HAVE_XAW3D}" = "yes" || test "${USE_X_TOOLKIT}" = "LUCID"; then
3143 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3144 USE_TOOLKIT_SCROLL_BARS=yes
3146 elif test "${HAVE_GTK}" = "yes"; then
3147 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3148 USE_TOOLKIT_SCROLL_BARS=yes
3149 elif test "${HAVE_NS}" = "yes"; then
3150 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3151 USE_TOOLKIT_SCROLL_BARS=yes
3152 elif test "${HAVE_W32}" = "yes"; then
3153 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3154 USE_TOOLKIT_SCROLL_BARS=yes
3158 dnl See if XIM is available.
3159 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3160 #include <X11/Xlib.h>
3161 #include <X11/Xresource.h>]],
3162 [[XIMProc callback;]])],
3164 AC_DEFINE(HAVE_XIM, 1, [Define to 1 if XIM is available])],
3167 dnl '--with-xim' now controls only the initial value of use_xim at run time.
3169 if test "${with_xim}" != "no"; then
3170 AC_DEFINE(USE_XIM, 1,
3171 [Define to 1 if we should use XIM, if it is available.])
3175 if test "${HAVE_XIM}" != "no"; then
3177 if test "$GCC" = yes; then
3178 CFLAGS="$CFLAGS --pedantic-errors"
3180 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3181 #include <X11/Xlib.h>
3182 #include <X11/Xresource.h>]],
3188 XPointer *client_data;
3190 /* If we're not using GCC, it's probably not XFree86, and this is
3191 probably right, but we can't use something like --pedantic-errors. */
3192 extern Bool XRegisterIMInstantiateCallback(Display*, XrmDatabase, char*,
3193 char*, XIMProc, XPointer*);
3195 (void)XRegisterIMInstantiateCallback(display, db, res_name, res_class, callback,
3197 [emacs_cv_arg6_star=yes])
3198 AH_TEMPLATE(XRegisterIMInstantiateCallback_arg6,
3199 [Define to the type of the 6th arg of XRegisterIMInstantiateCallback,
3200 either XPointer or XPointer*.])dnl
3201 if test "$emacs_cv_arg6_star" = yes; then
3202 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer*])
3204 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer])
3209 ### Start of font-backend (under any platform) section.
3210 # (nothing here yet -- this is a placeholder)
3211 ### End of font-backend (under any platform) section.
3213 ### Start of font-backend (under X11) section.
3214 if test "${HAVE_X11}" = "yes"; then
3215 ## Use -lXft if available, unless '--with-xft=no'.
3217 if test "x${with_x}" = "xno"; then
3221 if test "$with_xft" != no; then
3222 EMACS_CHECK_MODULES([FONTCONFIG], [fontconfig >= 2.2.0])
3223 with_xft=$HAVE_FONTCONFIG
3226 if test "x${with_xft}" != "xno"; then
3228 EMACS_CHECK_MODULES([XFT], [xft >= 0.13.0], [], [HAVE_XFT=no])
3229 ## Because xterm.c uses XRenderQueryExtension when XFT is
3230 ## enabled, we also need to link to -lXrender.
3232 AC_CHECK_LIB(Xrender, XRenderQueryExtension, HAVE_XRENDER=yes)
3233 if test "$HAVE_XFT" != no && test "$HAVE_XRENDER" != no; then
3234 OLD_CPPFLAGS="$CPPFLAGS"
3235 OLD_CFLAGS="$CFLAGS"
3237 CPPFLAGS="$CPPFLAGS $XFT_CFLAGS"
3238 CFLAGS="$CFLAGS $XFT_CFLAGS"
3239 XFT_LIBS="-lXrender $XFT_LIBS"
3240 LIBS="$XFT_LIBS $LIBS"
3241 AC_CHECK_HEADER(X11/Xft/Xft.h,
3242 AC_CHECK_LIB(Xft, XftFontOpen, HAVE_XFT=yes, , $XFT_LIBS) , ,
3243 [[#include <X11/X.h>]])
3245 if test "${HAVE_XFT}" = "yes"; then
3246 AC_DEFINE(HAVE_XFT, 1, [Define to 1 if you have the Xft library.])
3248 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $XFT_CFLAGS"
3249 fi # "${HAVE_XFT}" = "yes"
3250 CPPFLAGS=$OLD_CPPFLAGS
3254 # Make sure XFT is disabled if we found XFT but not XRender
3256 fi # "$HAVE_XFT" != no
3257 fi # "x${with_xft}" != "xno"
3259 ## We used to allow building with FreeType and without Xft.
3260 ## However, the ftx font backend driver is not in good shape.
3261 if test "$HAVE_XFT" != "yes"; then
3262 dnl For the "Does Emacs use" message at the end.
3266 dnl Strict linkers fail with
3267 dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
3268 dnl if -lfreetype is not specified.
3269 dnl The following is needed to set FREETYPE_LIBS.
3270 EMACS_CHECK_MODULES([FREETYPE], [freetype2])
3272 test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(libxft requires libfreetype)
3276 if test "${HAVE_FREETYPE}" = "yes"; then
3277 AC_DEFINE(HAVE_FREETYPE, 1,
3278 [Define to 1 if using the freetype and fontconfig libraries.])
3279 if test "${with_libotf}" != "no"; then
3280 EMACS_CHECK_MODULES([LIBOTF], [libotf])
3281 if test "$HAVE_LIBOTF" = "yes"; then
3282 AC_DEFINE(HAVE_LIBOTF, 1, [Define to 1 if using libotf.])
3283 AC_CHECK_LIB(otf, OTF_get_variation_glyphs,
3284 HAVE_OTF_GET_VARIATION_GLYPHS=yes,
3285 HAVE_OTF_GET_VARIATION_GLYPHS=no)
3286 if test "${HAVE_OTF_GET_VARIATION_GLYPHS}" = "yes"; then
3287 AC_DEFINE(HAVE_OTF_GET_VARIATION_GLYPHS, 1,
3288 [Define to 1 if libotf has OTF_get_variation_glyphs.])
3290 if ! $PKG_CONFIG --atleast-version=0.9.16 libotf; then
3291 AC_DEFINE(HAVE_OTF_KANNADA_BUG, 1,
3292 [Define to 1 if libotf is affected by https://debbugs.gnu.org/28110.])
3296 dnl FIXME should there be an error if HAVE_FREETYPE != yes?
3297 dnl Does the new font backend require it, or can it work without it?
3301 if test "${HAVE_LIBOTF}" = yes; then
3302 if test "${with_m17n_flt}" != "no"; then
3303 EMACS_CHECK_MODULES([M17N_FLT], [m17n-flt])
3304 if test "$HAVE_M17N_FLT" = "yes"; then
3305 AC_DEFINE(HAVE_M17N_FLT, 1, [Define to 1 if using libm17n-flt.])
3316 ### End of font-backend (under X11) section.
3318 AC_SUBST(FREETYPE_CFLAGS)
3319 AC_SUBST(FREETYPE_LIBS)
3320 AC_SUBST(FONTCONFIG_CFLAGS)
3321 AC_SUBST(FONTCONFIG_LIBS)
3322 AC_SUBST(LIBOTF_CFLAGS)
3323 AC_SUBST(LIBOTF_LIBS)
3324 AC_SUBST(M17N_FLT_CFLAGS)
3325 AC_SUBST(M17N_FLT_LIBS)
3328 if test "${HAVE_X11}" = "yes"; then
3329 if test "${with_cairo}" != "no"; then
3330 CAIRO_REQUIRED=1.12.0
3331 CAIRO_MODULE="cairo >= $CAIRO_REQUIRED"
3332 EMACS_CHECK_MODULES(CAIRO, $CAIRO_MODULE)
3333 if test $HAVE_CAIRO = yes; then
3334 AC_DEFINE(USE_CAIRO, 1, [Define to 1 if using cairo.])
3336 AC_MSG_ERROR([cairo requested but not found.])
3339 CFLAGS="$CFLAGS $CAIRO_CFLAGS"
3340 LIBS="$LIBS $CAIRO_LIBS"
3341 AC_SUBST(CAIRO_CFLAGS)
3342 AC_SUBST(CAIRO_LIBS)
3346 if test "${HAVE_X11}" = "yes"; then
3347 AC_CHECK_HEADER(X11/Xlib-xcb.h,
3348 AC_CHECK_LIB(xcb, xcb_translate_coordinates, HAVE_XCB=yes))
3349 if test "${HAVE_XCB}" = "yes"; then
3350 AC_CHECK_LIB(X11-xcb, XGetXCBConnection, HAVE_X11_XCB=yes)
3351 if test "${HAVE_X11_XCB}" = "yes"; then
3352 AC_DEFINE(USE_XCB, 1,
3353 [Define to 1 if you have the XCB library and X11-XCB library for mixed
3354 X11/XCB programming.])
3355 XCB_LIBS="-lX11-xcb -lxcb"
3361 ### Use -lXpm if available, unless '--with-xpm=no'.
3362 ### mingw32 doesn't use -lXpm, since it loads the library dynamically.
3363 ### The Cygwin-w32 build uses <noX/xpm.h> instead of <X11/xpm.h>, so
3364 ### we need to set LDFLAGS accordingly.
3367 if test "${HAVE_W32}" = "yes" && test "${opsys}" = "cygwin"; then
3368 if test "${with_xpm}" != "no"; then
3369 SAVE_LDFLAGS="$LDFLAGS"
3370 LDFLAGS="$LDFLAGS -L/usr/lib/noX"
3371 AC_CHECK_HEADER(noX/xpm.h,
3372 [AC_CHECK_LIB(Xpm, XpmReadFileToImage, HAVE_XPM=yes)])
3373 if test "${HAVE_XPM}" = "yes"; then
3374 AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
3375 [emacs_cv_cpp_xpm_return_alloc_pixels],
3376 [AC_EGREP_CPP(no_return_alloc_pixels,
3377 [#include "noX/xpm.h"
3378 #ifndef XpmReturnAllocPixels
3379 no_return_alloc_pixels
3381 ], emacs_cv_cpp_xpm_return_alloc_pixels=no,
3382 emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
3384 if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
3386 LDFLAGS="$SAVE_LDFLAGS"
3391 if test "${HAVE_XPM}" = "yes"; then
3392 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3397 if test "${HAVE_X11}" = "yes"; then
3398 dnl Avoid Xpm on AIX unless requested, as it crashes; see Bug#17598.
3399 test "$opsys$with_xpm_set" = aix4-2 && with_xpm=no
3401 if test "${with_xpm}" != "no"; then
3402 AC_CHECK_HEADER(X11/xpm.h,
3403 [AC_CHECK_LIB(Xpm, XpmReadFileToPixmap, HAVE_XPM=yes, , -lX11)])
3404 if test "${HAVE_XPM}" = "yes"; then
3405 AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
3406 [emacs_cv_cpp_xpm_return_alloc_pixels],
3407 [AC_EGREP_CPP(no_return_alloc_pixels,
3408 [#include "X11/xpm.h"
3409 #ifndef XpmReturnAllocPixels
3410 no_return_alloc_pixels
3412 ], emacs_cv_cpp_xpm_return_alloc_pixels=no,
3413 emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
3415 if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
3421 if test "${HAVE_XPM}" = "yes"; then
3422 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3424 elif test "$opsys,$LUCID_LIBW" = aix4-2,-lXaw; then
3425 dnl AIX -lXaw needs -lXpm linked too; see Bug#17598 Message#152.
3430 ### FIXME: Perhaps regroup to minimize code duplication due to MinGW's
3431 ### slightly different requirements wrt image libraries (it doesn't
3432 ### use -lXpm because it loads the xpm shared library dynamically at
3434 if test "${opsys}" = "mingw32"; then
3435 if test "${with_xpm}" != "no"; then
3436 AC_CHECK_HEADER(X11/xpm.h, HAVE_XPM=yes, HAVE_XPM=no, [
3440 if test "${HAVE_XPM}" = "yes"; then
3441 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3447 ### Use -ljpeg if available, unless '--with-jpeg=no'.
3450 if test "${NS_IMPL_COCOA}" = yes; then
3451 : # Cocoa provides its own jpeg support, so do nothing.
3452 elif test "${with_jpeg}" != "no"; then
3453 AC_CACHE_CHECK([for jpeglib 6b or later],
3456 for emacs_cv_jpeglib in yes -ljpeg no; do
3457 case $emacs_cv_jpeglib in
3460 *) LIBS="$LIBS $emacs_cv_jpeglib";;
3464 [[#undef HAVE_STDLIB_H /* Avoid config.h/jpeglib.h collision. */
3465 #include <stdio.h> /* jpeglib.h needs FILE and size_t. */
3466 #include <jpeglib.h>
3468 char verify[JPEG_LIB_VERSION < 62 ? -1 : 1];
3469 struct jpeg_decompress_struct cinfo;
3472 jpeg_create_decompress (&cinfo);
3473 WARNMS (&cinfo, JWRN_JPEG_EOF);
3474 jpeg_destroy_decompress (&cinfo);
3476 [emacs_link_ok=yes],
3479 test $emacs_link_ok = yes && break
3481 if test "$emacs_cv_jpeglib" != no; then
3483 AC_DEFINE([HAVE_JPEG], 1,
3484 [Define to 1 if you have the jpeg library (typically -ljpeg).])
3485 ### mingw32 doesn't use -ljpeg, since it loads the library
3486 ### dynamically when needed, and doesn't want a run-time
3487 ### dependency on the jpeglib DLL.
3488 test "$emacs_cv_jpeglib" != yes && test "${opsys}" != "mingw32" \
3489 && LIBJPEG=$emacs_cv_jpeglib
3497 if test "${with_lcms2}" != "no"; then
3498 EMACS_CHECK_MODULES([LCMS2], [lcms2])
3500 if test "${HAVE_LCMS2}" = "yes"; then
3501 AC_DEFINE([HAVE_LCMS2], 1, [Define to 1 if you have the lcms2 library (-llcms2).])
3502 ### mingw32 doesn't use -llcms2, since it loads the library dynamically.
3503 if test "${opsys}" = "mingw32"; then
3507 AC_SUBST(LCMS2_CFLAGS)
3508 AC_SUBST(LCMS2_LIBS)
3512 if test "${with_zlib}" != "no"; then
3514 AC_SEARCH_LIBS([inflateEnd], [z], [HAVE_ZLIB=yes])
3516 case $ac_cv_search_inflateEnd in
3517 -*) LIBZ=$ac_cv_search_inflateEnd ;;
3520 if test "${HAVE_ZLIB}" = "yes"; then
3521 AC_DEFINE([HAVE_ZLIB], 1, [Define to 1 if you have the zlib library (-lz).])
3522 ### mingw32 doesn't use -lz, since it loads the library dynamically.
3523 if test "${opsys}" = "mingw32"; then
3529 ### Dynamic modules support
3534 cygwin|mingw32) MODULES_SUFFIX=".dll" ;;
3535 *) MODULES_SUFFIX=".so" ;;
3537 if test "${with_modules}" != "no"; then
3543 cygwin|mingw32|darwin)
3547 # BSD systems have dlopen in libc.
3548 AC_CHECK_FUNC([dlopen], [HAVE_MODULES=yes])
3552 if test "${HAVE_MODULES}" = no; then
3553 AC_MSG_ERROR([Dynamic modules are not supported on your system])
3556 LIBS="$LIBS $LIBMODULES"
3557 AC_CHECK_FUNCS([dladdr dlfunc])
3562 if test "${HAVE_MODULES}" = yes; then
3563 MODULES_OBJ="dynlib.o emacs-module.o"
3564 AC_DEFINE(HAVE_MODULES, 1, [Define to 1 if dynamic modules are enabled])
3565 AC_DEFINE_UNQUOTED(MODULES_SUFFIX, "$MODULES_SUFFIX",
3566 [System extension for dynamic libraries])
3568 AC_SUBST(MODULES_OBJ)
3569 AC_SUBST(LIBMODULES)
3570 AC_SUBST(HAVE_MODULES)
3571 AC_SUBST(MODULES_SUFFIX)
3573 AC_CONFIG_FILES([src/emacs-module.h])
3574 AC_SUBST_FILE([module_env_snippet_25])
3575 AC_SUBST_FILE([module_env_snippet_26])
3576 module_env_snippet_25="$srcdir/src/module-env-25.h"
3577 module_env_snippet_26="$srcdir/src/module-env-26.h"
3579 ### Use -lpng if available, unless '--with-png=no'.
3583 if test "${NS_IMPL_COCOA}" = yes; then
3584 : # Cocoa provides its own png support, so do nothing.
3585 elif test "${with_png}" != no; then
3586 # mingw32 loads the library dynamically.
3587 if test "$opsys" = mingw32; then
3588 AC_CHECK_HEADER([png.h], [HAVE_PNG=yes])
3589 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3590 EMACS_CHECK_MODULES([PNG], [libpng >= 1.0.0])
3591 if test $HAVE_PNG = yes; then
3594 # Test old way in case pkg-config doesn't have it (older machines).
3595 AC_MSG_CHECKING([for libpng not configured by pkg-config])
3597 png_cflags=`(libpng-config --cflags) 2>&AS_MESSAGE_LOG_FD` &&
3598 png_ldflags=`(libpng-config --ldflags) 2>&AS_MESSAGE_LOG_FD` || {
3599 # libpng-config does not work; configure by hand.
3600 # Debian unstable as of July 2003 has multiple libpngs, and puts png.h
3601 # in /usr/include/libpng.
3602 if test -r /usr/include/libpng/png.h &&
3603 test ! -r /usr/include/png.h; then
3604 png_cflags=-I/usr/include/libpng
3612 CFLAGS="$CFLAGS $png_cflags"
3613 LIBS="$png_ldflags -lz -lm $LIBS"
3615 [AC_LANG_PROGRAM([[#include <png.h>]],
3616 [[return !png_get_channels (0, 0);]])],
3618 PNG_CFLAGS=`AS_ECHO(["$png_cflags"]) | sed -e "$edit_cflags"`
3619 LIBPNG=$png_ldflags])
3622 AC_MSG_RESULT([$HAVE_PNG])
3625 # $LIBPNG requires explicit -lz in some cases.
3626 # We don't know what those cases are, exactly, so play it safe and
3627 # append -lz to any nonempty $LIBPNG, unless we're already using LIBZ.
3628 case " $LIBPNG ",$LIBZ in
3629 *' -lz '*, | *' ',?*) ;;
3630 *) LIBPNG="$LIBPNG -lz" ;;
3634 if test $HAVE_PNG = yes; then
3635 AC_DEFINE([HAVE_PNG], [1], [Define to 1 if you have the png library.])
3638 CFLAGS="$CFLAGS $PNG_CFLAGS"
3639 AC_CHECK_DECL([png_longjmp],
3641 [AC_DEFINE([PNG_DEPSTRUCT], [],
3642 [Define to empty to suppress deprecation warnings when building
3643 with --enable-gcc-warnings and with libpng versions before 1.5,
3644 which lack png_longjmp.])],
3650 AC_SUBST(PNG_CFLAGS)
3652 ### Use -ltiff if available, unless '--with-tiff=no'.
3653 ### mingw32 doesn't use -ltiff, since it loads the library dynamically.
3656 if test "${opsys}" = "mingw32"; then
3657 if test "${with_tiff}" != "no"; then
3658 AC_CHECK_HEADER(tiffio.h, HAVE_TIFF=yes, HAVE_TIFF=no)
3660 if test "${HAVE_TIFF}" = "yes"; then
3661 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3663 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3664 if test "${with_tiff}" != "no"; then
3665 AC_CHECK_HEADER(tiffio.h,
3667 # At least one tiff package requires the jpeg library.
3668 if test "${HAVE_JPEG}" = yes; then tifflibs="-ljpeg $tifflibs"; fi
3669 AC_CHECK_LIB(tiff, TIFFGetVersion, HAVE_TIFF=yes, , $tifflibs)])
3672 if test "${HAVE_TIFF}" = "yes"; then
3673 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3674 dnl FIXME -lz -lm, as per libpng?
3680 ### Use -lgif or -lungif if available, unless '--with-gif=no'.
3681 ### mingw32 doesn't use -lgif/-lungif, since it loads the library dynamically.
3684 if test "${opsys}" = "mingw32"; then
3685 if test "${with_gif}" != "no"; then
3686 AC_CHECK_HEADER(gif_lib.h, HAVE_GIF=yes, HAVE_GIF=no)
3688 if test "${HAVE_GIF}" = "yes"; then
3689 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3691 elif test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no" \
3692 || test "${HAVE_W32}" = "yes"; then
3693 AC_CHECK_HEADER(gif_lib.h,
3694 # EGifPutExtensionLast only exists from version libungif-4.1.0b1.
3695 # Earlier versions can crash Emacs, but version 5.0 removes EGifPutExtensionLast.
3696 [AC_CHECK_LIB(gif, GifMakeMapObject, HAVE_GIF=yes,
3697 [AC_CHECK_LIB(gif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=maybe)])])
3699 if test "$HAVE_GIF" = yes; then
3701 elif test "$HAVE_GIF" = maybe; then
3702 # If gif_lib.h but no libgif, try libungif.
3703 AC_CHECK_LIB(ungif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=no)
3704 test "$HAVE_GIF" = yes && LIBGIF=-lungif
3707 if test "${HAVE_GIF}" = "yes"; then
3708 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3713 dnl Check for required libraries.
3716 if test "${HAVE_X11}" = "yes"; then
3717 test "${with_xpm}" != "no" && test "${HAVE_XPM}" != "yes" &&
3718 MISSING="libXpm" && WITH_NO="--with-xpm=no"
3719 test "${with_jpeg}" != "no" && test "${HAVE_JPEG}" != "yes" &&
3720 MISSING="$MISSING libjpeg" && WITH_NO="$WITH_NO --with-jpeg=no"
3721 test "${with_png}" != "no" && test "${HAVE_PNG}" != "yes" &&
3722 MISSING="$MISSING libpng" && WITH_NO="$WITH_NO --with-png=no"
3723 test "${with_gif}" != "no" && test "${HAVE_GIF}" != "yes" &&
3724 MISSING="$MISSING libgif/libungif" && WITH_NO="$WITH_NO --with-gif=no"
3725 test "${with_tiff}" != "no" && test "${HAVE_TIFF}" != "yes" &&
3726 MISSING="$MISSING libtiff" && WITH_NO="$WITH_NO --with-tiff=no"
3728 test "${with_gnutls}" != "no" && test "${HAVE_GNUTLS}" != "yes" &&
3729 MISSING="$MISSING gnutls" && WITH_NO="$WITH_NO --with-gnutls=no"
3730 if test "X${MISSING}" != X; then
3731 AC_MSG_ERROR([The following required libraries were not found:
3733 Maybe some development libraries/packages are missing?
3734 If you don't want to link with them give
3736 as options to configure])
3739 ### Use -lgpm if available, unless '--with-gpm=no'.
3742 if test "${with_gpm}" != "no"; then
3743 AC_CHECK_HEADER(gpm.h,
3744 [AC_CHECK_LIB(gpm, Gpm_Open, HAVE_GPM=yes)])
3746 if test "${HAVE_GPM}" = "yes"; then
3747 AC_DEFINE(HAVE_GPM, 1, [Define to 1 if you have the gpm library (-lgpm).])
3753 dnl Check for malloc/malloc.h on darwin
3754 AC_CHECK_HEADERS_ONCE(malloc/malloc.h)
3757 ### Use NeXTstep API to implement GUI.
3758 if test "${HAVE_NS}" = "yes"; then
3759 AC_DEFINE(HAVE_NS, 1, [Define to 1 if you are using the NeXTstep API, either GNUstep or Cocoa on macOS.])
3760 if test "${NS_IMPL_COCOA}" = "yes"; then
3761 AC_DEFINE(NS_IMPL_COCOA, 1, [Define to 1 if you are using NS windowing under macOS.])
3763 if test "${NS_IMPL_GNUSTEP}" = "yes"; then
3764 AC_DEFINE(NS_IMPL_GNUSTEP, 1, [Define to 1 if you are using NS windowing under GNUstep.])
3765 if test $NS_GNUSTEP_CONFIG != yes; then
3766 # See also .m.o rule in src/Makefile.in. */
3767 # FIXME: are all these flags really needed? Document here why. */
3768 GNUSTEP_CFLAGS="-D_REENTRANT -fPIC -fno-strict-aliasing -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
3769 ## Extra CFLAGS applied to src/*.m files.
3770 GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -fgnu-runtime -Wno-import -fconstant-string-class=NSConstantString -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGSWARN -DGSDIAGNOSE"
3776 ### Use session management (-lSM -lICE) if available
3779 if test "${HAVE_X11}" = "yes"; then
3780 AC_CHECK_HEADER(X11/SM/SMlib.h,
3781 [AC_CHECK_LIB(SM, SmcOpenConnection, HAVE_X_SM=yes, , -lICE)])
3783 if test "${HAVE_X_SM}" = "yes"; then
3784 AC_DEFINE(HAVE_X_SM, 1, [Define to 1 if you have the SM library (-lSM).])
3790 ### Use XRandr (-lXrandr) if available
3792 if test "${HAVE_X11}" = "yes"; then
3793 XRANDR_REQUIRED=1.2.2
3794 XRANDR_MODULES="xrandr >= $XRANDR_REQUIRED"
3795 EMACS_CHECK_MODULES([XRANDR], [$XRANDR_MODULES])
3796 if test $HAVE_XRANDR = no; then
3797 # Test old way in case pkg-config doesn't have it (older machines).
3798 # Include Xrender.h by hand to work around bug in older Xrandr.h
3799 # (e.g. RHEL5) and silence (harmless) configure warning (bug#18465).
3800 AC_CHECK_HEADER(X11/extensions/Xrandr.h,
3801 [AC_CHECK_LIB(Xrandr, XRRGetScreenResources, HAVE_XRANDR=yes)],
3802 [], [AC_INCLUDES_DEFAULT
3803 #include <X11/extensions/Xrender.h>])
3804 if test $HAVE_XRANDR = yes; then
3805 XRANDR_LIBS=-lXrandr
3808 if test $HAVE_XRANDR = yes; then
3809 AC_DEFINE(HAVE_XRANDR, 1, [Define to 1 if you have the XRandr extension.])
3812 AC_SUBST(XRANDR_CFLAGS)
3813 AC_SUBST(XRANDR_LIBS)
3815 ### Use Xinerama (-lXinerama) if available
3817 if test "${HAVE_X11}" = "yes"; then
3818 XINERAMA_REQUIRED=1.0.2
3819 XINERAMA_MODULES="xinerama >= $XINERAMA_REQUIRED"
3820 EMACS_CHECK_MODULES([XINERAMA], [$XINERAMA_MODULES])
3821 if test $HAVE_XINERAMA = no; then
3822 # Test old way in case pkg-config doesn't have it (older machines).
3823 AC_CHECK_HEADER(X11/extensions/Xinerama.h,
3824 [AC_CHECK_LIB(Xinerama, XineramaQueryExtension, HAVE_XINERAMA=yes)])
3825 if test $HAVE_XINERAMA = yes; then
3826 XINERAMA_LIBS=-lXinerama
3829 if test $HAVE_XINERAMA = yes; then
3830 AC_DEFINE(HAVE_XINERAMA, 1, [Define to 1 if you have the Xinerama extension.])
3833 AC_SUBST(XINERAMA_CFLAGS)
3834 AC_SUBST(XINERAMA_LIBS)
3836 ### Use Xfixes (-lXfixes) if available
3838 if test "${HAVE_X11}" = "yes"; then
3839 XFIXES_REQUIRED=4.0.0
3840 XFIXES_MODULES="xfixes >= $XFIXES_REQUIRED"
3841 EMACS_CHECK_MODULES([XFIXES], [$XFIXES_MODULES])
3842 if test $HAVE_XFIXES = no; then
3843 # Test old way in case pkg-config doesn't have it (older machines).
3844 AC_CHECK_HEADER(X11/extensions/Xfixes.h,
3845 [AC_CHECK_LIB(Xfixes, XFixesHideCursor, HAVE_XFIXES=yes)])
3846 if test $HAVE_XFIXES = yes; then
3847 XFIXES_LIBS=-lXfixes
3850 if test $HAVE_XFIXES = yes; then
3851 AC_DEFINE(HAVE_XFIXES, 1, [Define to 1 if you have the Xfixes extension.])
3854 AC_SUBST(XFIXES_CFLAGS)
3855 AC_SUBST(XFIXES_LIBS)
3857 ### Use Xdbe (-lXdbe) if available
3859 if test "${HAVE_X11}" = "yes"; then
3860 AC_CHECK_HEADER(X11/extensions/Xdbe.h,
3861 [AC_CHECK_LIB(Xext, XdbeAllocateBackBufferName, HAVE_XDBE=yes)],
3863 [#include <X11/Xlib.h>
3865 if test $HAVE_XDBE = yes; then
3868 if test $HAVE_XDBE = yes; then
3869 AC_DEFINE(HAVE_XDBE, 1, [Define to 1 if you have the Xdbe extension.])
3872 AC_SUBST(XDBE_CFLAGS)
3875 ### Use libxml (-lxml2) if available
3876 ### mingw32 doesn't use -lxml2, since it loads the library dynamically.
3878 if test "${with_xml2}" != "no"; then
3879 ### I'm not sure what the version number should be, so I just guessed.
3880 EMACS_CHECK_MODULES([LIBXML2], [libxml-2.0 > 2.6.17])
3881 # Built-in libxml2 on OS X 10.8 lacks libxml-2.0.pc.
3882 if test "${HAVE_LIBXML2}" != "yes" && test "$opsys" = "darwin"; then
3883 SAVE_CPPFLAGS="$CPPFLAGS"
3884 if test -z "$xcsdkdir" -a -n "$XCRUN" -a ! -d /usr/include; then
3885 dnl /usr/include is not found. Try Xcode SDK dir if it is sane.
3886 xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
3888 *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
3892 CPPFLAGS="$CPPFLAGS -isystem${xcsdkdir}/usr/include/libxml2"
3893 AC_CHECK_HEADER(libxml/HTMLparser.h,
3894 [AC_CHECK_DECL(HTML_PARSE_RECOVER, HAVE_LIBXML2=yes, ,
3895 [#include <libxml/HTMLparser.h>])])
3896 CPPFLAGS="$SAVE_CPPFLAGS"
3897 if test "${HAVE_LIBXML2}" = "yes"; then
3898 LIBXML2_CFLAGS="-isystem${xcsdkdir}/usr/include/libxml2"
3899 LIBXML2_LIBS="-lxml2"
3902 if test "${HAVE_LIBXML2}" = "yes"; then
3903 if test "${opsys}" != "mingw32"; then
3904 AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no,
3909 if test "${HAVE_LIBXML2}" = "yes"; then
3910 AC_DEFINE(HAVE_LIBXML2, 1, [Define to 1 if you have the libxml library (-lxml2).])
3917 AC_SUBST(LIBXML2_LIBS)
3918 AC_SUBST(LIBXML2_CFLAGS)
3922 if test ! "$with_mailutils"; then
3923 # Check for mail-locking functions in a "mail" library. Probably this should
3924 # have the same check as for liblockfile below.
3925 AC_CHECK_LIB([mail], [maillock], [have_mail=yes], [have_mail=no])
3926 if test $have_mail = yes; then
3928 AC_DEFINE([HAVE_LIBMAIL], [1],
3929 [Define to 1 if you have the 'mail' library (-lmail).])
3932 LIBS="$LIBS_MAIL $LIBS"
3933 AC_CHECK_FUNCS([touchlock])
3936 dnl Debian, at least:
3937 AC_CHECK_LIB([lockfile], [maillock], [have_lockfile=yes], [have_lockfile=no])
3938 if test $have_lockfile = yes; then
3939 LIBS_MAIL=-llockfile
3940 AC_DEFINE([HAVE_LIBLOCKFILE], [1],
3941 [Define to 1 if you have the 'lockfile' library (-llockfile).])
3943 # If we have the shared liblockfile, assume we must use it for mail
3944 # locking (e.g. Debian). If we couldn't link against liblockfile
3945 # (no liblockfile.a installed), ensure that we don't need to.
3946 dnl This works for files generally, not just executables.
3947 dnl Should we look elsewhere for it? Maybe examine /etc/ld.so.conf?
3948 AC_CHECK_PROG([liblockfile], [liblockfile.so], [yes], [no],
3949 [/usr/lib:/lib:/usr/local/lib:$LD_LIBRARY_PATH])
3950 if test "$ac_cv_prog_liblockfile" = yes; then
3951 AC_MSG_ERROR([Shared liblockfile found but can't link against it.
3952 This probably means that movemail could lose mail.
3953 There may be a 'development' package to install containing liblockfile.])
3956 AC_CHECK_HEADERS([maillock.h])
3958 ## Define MAIL_USE_FLOCK (or LOCKF) if the mailer uses flock (or lockf) to
3959 ## interlock access to the mail spool. The alternative is a lock file named
3960 ## /usr/spool/mail/$USER.lock.
3963 aix4-2) mail_lock="lockf" ;;
3965 gnu|freebsd|dragonfly|netbsd|openbsd|darwin) mail_lock="flock" ;;
3967 ## On GNU/Linux systems, both methods are used by various mail programs.
3968 ## I assume most people are using newer mailers that have heard of flock.
3969 ## Change this if you need to.
3970 ## Debian contains a patch which says: "On Debian/GNU/Linux systems,
3971 ## configure gets the right answers, and that means *NOT* using flock.
3972 ## Using flock is guaranteed to be the wrong thing. See Debian Policy
3973 ## for details." and then uses '#ifdef DEBIAN'. Unfortunately the
3974 ## Debian maintainer hasn't provided a clean fix for Emacs.
3975 ## movemail.c will use 'maillock' when MAILDIR, HAVE_LIBMAIL and
3976 ## HAVE_MAILLOCK_H are defined, so the following appears to be the
3977 ## correct logic. -- fx
3978 ## We must check for HAVE_LIBLOCKFILE too, as movemail does.
3979 ## liblockfile is a Free Software replacement for libmail, used on
3980 ## Debian systems and elsewhere. -rfr.
3983 if test $have_mail = yes || test $have_lockfile = yes; then
3984 test $ac_cv_header_maillock_h = yes && mail_lock=no
3988 mail_lock="none-needed" ;;
3992 flock) AC_DEFINE([MAIL_USE_FLOCK], [1],
3993 [Define if the mailer uses flock to interlock the mail spool.]);;
3995 lockf) AC_DEFINE([MAIL_USE_LOCKF], [1],
3996 [Define if the mailer uses lockf to interlock the mail spool.]);;
4000 *) BLESSMAIL_TARGET="need-blessmail" ;;
4003 AC_SUBST([BLESSMAIL_TARGET])
4004 AC_SUBST([LIBS_MAIL])
4007 LIBS="$LIB_PTHREAD $LIB_MATH $LIBS"
4008 AC_CHECK_FUNCS(accept4 fchdir gethostname \
4009 getrusage get_current_dir_name \
4010 lrand48 random rint trunc \
4011 select getpagesize setlocale newlocale \
4012 getrlimit setrlimit shutdown \
4013 pthread_sigmask strsignal setitimer \
4014 sendto recvfrom getsockname getifaddrs freeifaddrs \
4016 getpwent endpwent getgrent endgrent \
4017 cfmakeraw cfsetspeed __executable_start log2 prctl)
4020 dnl No need to check for posix_memalign if aligned_alloc works.
4021 AC_CHECK_FUNCS([aligned_alloc posix_memalign], [break])
4022 AC_CHECK_DECLS([aligned_alloc], [], [], [[#include <stdlib.h>]])
4024 dnl Cannot use AC_CHECK_FUNCS
4025 AC_CACHE_CHECK([for __builtin_frame_address],
4026 [emacs_cv_func___builtin_frame_address],
4027 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_frame_address (0);])],
4028 [emacs_cv_func___builtin_frame_address=yes],
4029 [emacs_cv_func___builtin_frame_address=no])])
4030 if test $emacs_cv_func___builtin_frame_address = yes; then
4031 AC_DEFINE([HAVE___BUILTIN_FRAME_ADDRESS], 1,
4032 [Define to 1 if you have the '__builtin_frame_address' function.])
4034 AC_CACHE_CHECK([for __builtin_unwind_init],
4035 emacs_cv_func___builtin_unwind_init,
4036 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_unwind_init ();])],
4037 emacs_cv_func___builtin_unwind_init=yes,
4038 emacs_cv_func___builtin_unwind_init=no)])
4039 if test $emacs_cv_func___builtin_unwind_init = yes; then
4040 AC_DEFINE(HAVE___BUILTIN_UNWIND_INIT, 1,
4041 [Define to 1 if you have the '__builtin_unwind_init' function.])
4044 AC_CHECK_HEADERS_ONCE(sys/un.h)
4049 AC_CHECK_FUNCS(grantpt)
4051 # PTY-related GNU extensions.
4052 AC_CHECK_FUNCS(getpt posix_openpt)
4054 dnl Run a test program that contains a call to tputs, a call that is
4055 dnl never executed. This tests whether a pre-'main' dynamic linker
4056 dnl works with the library. It's too much trouble to actually call
4057 dnl tputs in the test program, due to portability hassles. When
4058 dnl cross-compiling, assume the test program will run if it links.
4059 AC_DEFUN([tputs_link_source], [
4061 [[extern void tputs (const char *, int, int (*)(int));
4062 int main (int argc, char **argv)
4065 tputs (argv[0], 0, 0);
4069 # Check this now, so that we will NOT find the above functions in ncurses.
4070 # That is because we have not set up to link ncurses in lib-src.
4071 # It's better to believe a function is not available
4072 # than to expect to find it in ncurses.
4073 # Also we need tputs and friends to be able to build at all.
4074 AC_CACHE_CHECK([for library containing tputs], [emacs_cv_tputs_lib],
4075 [if test "${opsys}" = "mingw32"; then
4076 emacs_cv_tputs_lib='none required'
4078 # curses precedes termcap because of AIX (Bug#9736#35) and OpenIndiana.
4079 for tputs_library in '' tinfo ncurses terminfo curses termcap; do
4081 if test -z "$tputs_library"; then
4082 emacs_cv_tputs_lib='none required'
4084 emacs_cv_tputs_lib=-l$tputs_library
4085 LIBS="$emacs_cv_tputs_lib $LIBS"
4087 AC_RUN_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no],
4088 [AC_LINK_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no])])
4090 if test "X$emacs_cv_tputs_lib" != Xno; then
4095 AS_CASE(["$emacs_cv_tputs_lib"],
4096 [no], [AC_MSG_ERROR([The required function 'tputs' was not found in any library.
4097 The following libraries were tried (in order):
4098 libtinfo, libncurses, libterminfo, libcurses, libtermcap
4099 Please try installing whichever of these libraries is most appropriate
4100 for your system, together with its header files.
4101 For example, a libncurses-dev(el) or similar package.])],
4102 [-l*], [LIBS_TERMCAP=$emacs_cv_tputs_lib],
4103 [*], [LIBS_TERMCAP=])
4105 ## Use termcap instead of terminfo?
4106 ## Only true for: freebsd < 40000, ms-w32, msdos, netbsd < 599002500.
4108 ## FIXME? In the cases below where we unconditionally set
4109 ## LIBS_TERMCAP="-lncurses", this overrides LIBS_TERMCAP = -ltinfo,
4110 ## if that was found above to have tputs.
4111 ## Should we use the gnu* logic everywhere?
4113 ## darwin: Prevents crashes when running Emacs in Terminal.app under 10.2.
4114 ## The ncurses library has been moved out of the System framework in
4115 ## Mac OS X 10.2. So if configure detects it, set the command-line
4116 ## option to use it.
4117 darwin) LIBS_TERMCAP="-lncurses" ;;
4119 gnu*) test -z "$LIBS_TERMCAP" && LIBS_TERMCAP="-lncurses" ;;
4122 AC_MSG_CHECKING([whether FreeBSD is new enough to use terminfo])
4123 AC_CACHE_VAL(emacs_cv_freebsd_terminfo,
4124 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <osreldate.h>]],
4125 [[#if __FreeBSD_version < 400000
4128 ]])], emacs_cv_freebsd_terminfo=yes, emacs_cv_freebsd_terminfo=no)])
4130 AC_MSG_RESULT($emacs_cv_freebsd_terminfo)
4132 if test $emacs_cv_freebsd_terminfo = yes; then
4133 LIBS_TERMCAP="-lncurses"
4136 LIBS_TERMCAP="-ltermcap"
4146 if test "x$LIBS_TERMCAP" != "x-lterminfo"; then
4148 LIBS_TERMCAP="-ltermcap"
4152 openbsd | dragonfly) LIBS_TERMCAP="-lncurses" ;;
4154 ## hpux: Make sure we get select from libc rather than from libcurses
4155 ## because libcurses on HPUX 10.10 has a broken version of select.
4156 ## We used to use -lc -lcurses, but this may be cleaner.
4157 ## FIXME? But TERMINFO = yes on hpux (it used to be explicitly
4158 # set that way, now it uses the default). Isn't this a contradiction?
4159 hpux*) LIBS_TERMCAP="-ltermcap" ;;
4163 TERMCAP_OBJ=tparam.o
4164 if test $TERMINFO = yes; then
4165 AC_DEFINE(TERMINFO, 1, [Define to 1 if you use terminfo instead of termcap.])
4166 TERMCAP_OBJ=terminfo.o
4168 if test "X$LIBS_TERMCAP" = "X-lncurses"; then
4169 AC_DEFINE(USE_NCURSES, 1, [Define to 1 if you use ncurses.])
4171 AC_SUBST(LIBS_TERMCAP)
4172 AC_SUBST(TERMCAP_OBJ)
4174 # GNU/Linux-specific timer functions.
4175 AC_CACHE_CHECK([for timerfd interface], [emacs_cv_have_timerfd],
4177 [AC_LANG_PROGRAM([[#include <sys/timerfd.h>
4179 [[timerfd_create (CLOCK_REALTIME,
4180 TFD_CLOEXEC | TFD_NONBLOCK);
4181 timerfd_settime (0, TFD_TIMER_ABSTIME, 0, 0);]])],
4182 [emacs_cv_have_timerfd=yes],
4183 [emacs_cv_have_timerfd=no])])
4184 if test "$emacs_cv_have_timerfd" = yes; then
4185 AC_DEFINE([HAVE_TIMERFD], 1,
4186 [Define to 1 if timerfd functions are supported as in GNU/Linux.])
4189 # Alternate stack for signal handlers.
4190 AC_CACHE_CHECK([whether signals can be handled on alternate stack],
4191 [emacs_cv_alternate_stack],
4193 [AC_LANG_PROGRAM([[#include <signal.h>
4196 struct sigaction sa;
4197 ss.ss_sp = malloc (SIGSTKSZ);
4198 ss.ss_size = SIGSTKSZ;
4199 sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
4200 sigaltstack (&ss, 0);
4201 sigaction (SIGSEGV, &sa, 0);]])],
4202 [emacs_cv_alternate_stack=yes],
4203 [emacs_cv_alternate_stack=no])])
4205 # Do we need the Hesiod library to provide the support routines?
4206 dnl FIXME? Should we be skipping this on Darwin too?
4209 if test "$with_hesiod" != no ; then
4210 # Don't set $LIBS here -- see comments above. FIXME which comments?
4212 AC_CHECK_FUNC(res_send, , [AC_CHECK_FUNC(__res_send, ,
4213 [AC_CHECK_LIB(resolv, res_send, resolv=yes,
4214 [AC_CHECK_LIB(resolv, __res_send, resolv=yes)])])])
4215 if test "$resolv" = yes ; then
4221 AC_CHECK_FUNC(hes_getmailhost, , [AC_CHECK_LIB(hesiod, hes_getmailhost,
4222 hesiod=yes, :, $RESOLVLIB)])
4224 if test x"$hesiod" = xyes; then
4226 LIBRESOLV=$RESOLVLIB
4232 # These tell us which Kerberos-related libraries to use.
4239 if test "${with_kerberos}" != no; then
4241 AC_CHECK_LIB(com_err, com_err, have_com_err=yes, have_com_err=no)
4242 if test $have_com_err = yes; then
4243 COM_ERRLIB=-lcom_err
4244 LIBS="$COM_ERRLIB $LIBS"
4246 AC_CHECK_LIB(crypto, mit_des_cbc_encrypt, have_crypto=yes, have_crypto=no)
4247 if test $have_crypto = yes; then
4249 LIBS="$CRYPTOLIB $LIBS"
4251 AC_CHECK_LIB(k5crypto, mit_des_cbc_encrypt, have_k5crypto=yes, have_k5crypto=no)
4252 if test $have_k5crypto = yes; then
4253 CRYPTOLIB=-lk5crypto
4254 LIBS="$CRYPTOLIB $LIBS"
4256 AC_CHECK_LIB(krb5, krb5_init_context, have_krb5=yes, have_krb5=no)
4257 if test $have_krb5=yes; then
4259 LIBS="$KRB5LIB $LIBS"
4261 dnl FIXME Simplify. Does not match 22 logic, thanks to default_off?
4262 if test "${with_kerberos5}" = no; then
4263 AC_CHECK_LIB(des425, des_cbc_encrypt, have_des425=yes, have_des425=no )
4264 if test $have_des425 = yes; then
4266 LIBS="$DESLIB $LIBS"
4268 AC_CHECK_LIB(des, des_cbc_encrypt, have_des=yes, have_des=no)
4269 if test $have_des = yes; then
4271 LIBS="$DESLIB $LIBS"
4274 AC_CHECK_LIB(krb4, krb_get_cred, have_krb4=yes, have_krb4=no)
4275 if test $have_krb4 = yes; then
4277 LIBS="$KRB4LIB $LIBS"
4279 AC_CHECK_LIB(krb, krb_get_cred, have_krb=yes, have_krb=no)
4280 if test $have_krb = yes; then
4282 LIBS="$KRB4LIB $LIBS"
4287 if test "${with_kerberos5}" != no; then
4288 AC_CHECK_HEADERS(krb5.h,
4289 [AC_CHECK_MEMBERS([krb5_error.text, krb5_error.e_text],,,
4290 [#include <krb5.h>])])
4292 AC_CHECK_HEADERS(krb.h,,
4293 [AC_CHECK_HEADERS(kerberosIV/krb.h,,
4294 [AC_CHECK_HEADERS(kerberos/krb.h)])])
4296 AC_CHECK_HEADERS(com_err.h)
4300 AC_SUBST(COM_ERRLIB)
4306 AC_CHECK_HEADERS(valgrind/valgrind.h)
4308 AC_CHECK_MEMBERS([struct unipair.unicode], [], [], [[#include <linux/kd.h>]])
4310 AC_CHECK_FUNCS_ONCE([sbrk])
4313 AC_CHECK_FUNC(socket, , ok_so_far=no)
4314 if test $ok_so_far = yes; then
4315 AC_CHECK_HEADER(netinet/in.h, , ok_so_far=no)
4317 if test $ok_so_far = yes; then
4318 AC_CHECK_HEADER(arpa/inet.h, , ok_so_far=no)
4320 if test $ok_so_far = yes; then
4321 dnl Fixme: Not used. Should this be HAVE_SOCKETS?
4322 AC_DEFINE(HAVE_INET_SOCKETS, 1,
4323 [Define to 1 if you have inet sockets.])
4328 AC_CHECK_FUNCS(snprintf)
4330 dnl Check for glib. This differs from other library checks in that
4331 dnl Emacs need not link to glib unless some other library is already
4332 dnl linking to glib. Although glib provides no facilities that Emacs
4333 dnl needs for its own purposes, when glib is present Emacs needs to
4334 dnl use primitives like g_main_context_query to avoid clashing with
4335 dnl glib at a low level.
4337 dnl Check this late, since it depends on $GTK_CFLAGS etc.
4339 AC_CACHE_CHECK([whether GLib is linked in], [emacs_cv_links_glib],
4340 [OLDCFLAGS="$CFLAGS"
4342 CFLAGS="$CFLAGS $GTK_CFLAGS $RSVG_CFLAGS $DBUS_CFLAGS $SETTINGS_CFLAGS"
4343 LIBS="$LIBS $GTK_LIBS $RSVG_LIBS $DBUS_LIBS $SETTINGS_LIBS"
4344 CFLAGS="$CFLAGS $NOTIFY_CFLAGS $CAIRO_CFLAGS"
4345 LIBS="$LIBS $NOTIFY_LIBS $CAIRO_LIBS"
4346 AC_LINK_IFELSE([AC_LANG_PROGRAM(
4349 [[g_print ("Hello world");]])],
4350 [emacs_cv_links_glib=yes],
4351 [emacs_cv_links_glib=no])
4354 if test "${emacs_cv_links_glib}" = "yes"; then
4355 AC_DEFINE(HAVE_GLIB, 1, [Define to 1 if GLib is linked in.])
4356 if test "$HAVE_NS" = no;then
4362 dnl Adapted from Haible's version.
4363 AC_CACHE_CHECK([for nl_langinfo and CODESET], emacs_cv_langinfo_codeset,
4364 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
4365 [[char* cs = nl_langinfo(CODESET);]])],
4366 emacs_cv_langinfo_codeset=yes,
4367 emacs_cv_langinfo_codeset=no)
4369 if test $emacs_cv_langinfo_codeset = yes; then
4370 AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
4371 [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
4376 dnl Fixme: AC_SYS_POSIX_TERMIOS should probably be used, but it's not clear
4377 dnl how the tty code is related to POSIX and/or other versions of termios.
4378 dnl The following looks like a useful start.
4380 dnl AC_SYS_POSIX_TERMIOS
4381 dnl if test $ac_cv_sys_posix_termios = yes; then
4382 dnl AC_DEFINE(HAVE_TERMIOS, 1, [Define to 1 if you have POSIX-style functions
4383 dnl and macros for terminal control.])
4384 dnl AC_DEFINE(HAVE_TCATTR, 1, [Define to 1 if you have tcgetattr and tcsetattr.])
4387 dnl Turned on June 1996 supposing nobody will mind it.
4388 dnl MinGW emulates passwd database, so this feature doesn't make sense there.
4389 if test "${opsys}" != "mingw32"; then
4390 AC_DEFINE(AMPERSAND_FULL_NAME, 1, [Define to use the convention that &
4391 in the full name stands for the login id.])
4394 dnl Everybody supports this, except MS.
4395 dnl Seems like the kind of thing we should be testing for, though.
4396 ## Note: PTYs are broken on darwin <6. Use at your own risk.
4397 if test "${opsys}" != "mingw32"; then
4398 AC_DEFINE(HAVE_PTYS, 1, [Define if the system supports pty devices.])
4401 dnl Everybody supports this, except MS-DOS.
4402 dnl Seems like the kind of thing we should be testing for, though.
4403 dnl Compare with HAVE_INET_SOCKETS (which is unused...) above.
4404 AC_DEFINE(HAVE_SOCKETS, 1, [Define if the system supports
4405 4.2-compatible sockets.])
4407 AH_TEMPLATE(INTERNAL_TERMINAL, [This is substituted when $TERM is "internal".])
4409 AH_TEMPLATE(NULL_DEVICE, [Name of the file to open to get
4410 a null file, or a data sink.])
4411 if test "${opsys}" = "mingw32"; then
4412 AC_DEFINE(NULL_DEVICE, ["NUL:"])
4414 AC_DEFINE(NULL_DEVICE, ["/dev/null"])
4417 if test "${opsys}" = "mingw32"; then
4422 AC_DEFINE_UNQUOTED(SEPCHAR, ['$SEPCHAR'], [Character that separates PATH elements.])
4423 dnl This is for MinGW, and is used in test/Makefile.in.
4424 dnl The MSYS Bash has heuristics for replacing ':' with ';' when it
4425 dnl decides that a command-line argument to be passed to a MinGW program
4426 dnl is a PATH-style list of directories. But that heuristics plays it
4427 dnl safe, and only does the replacement when it is _absolutely_ sure it
4428 dnl sees a colon-separated list of file names; e.g. ":." is left alone,
4429 dnl which breaks in-tree builds. So we do this manually instead.
4430 dnl Note that we cannot rely on PATH_SEPARATOR, as that one will always
4431 dnl be computed as ':' in MSYS Bash.
4434 dnl Everybody supports this, except MS-DOS.
4435 AC_DEFINE(subprocesses, 1, [Define to enable asynchronous subprocesses.])
4437 AC_DEFINE(USER_FULL_NAME, [pw->pw_gecos], [How to get a user's full name.])
4440 AC_DEFINE(DIRECTORY_SEP, ['/'],
4441 [Character that separates directories in a file name.])
4443 if test "${opsys}" = "mingw32"; then
4444 AC_DEFINE(IS_DEVICE_SEP(_c_), [((_c_) == ':')],
4445 [Returns true if character is a device separator.])
4447 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == '/' || (_c_) == '\\')],
4448 [Returns true if character is a directory separator.])
4450 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP(_c_))],
4451 [Returns true if character is any form of separator.])
4453 AC_DEFINE(IS_DEVICE_SEP(_c_), 0,
4454 [Returns true if character is a device separator.])
4456 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == DIRECTORY_SEP)],
4457 [Returns true if character is a directory separator.])
4459 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_))],
4460 [Returns true if character is any form of separator.])
4463 if test "$USE_X_TOOLKIT" != "none"; then
4467 dnl Assar Westerlund <assar@sics.se> says this is necessary
4468 dnl for HP-UX 10.20, and that it works for HP-UX 0 as well.
4472 if test "$have_editres" != no && test ! -z "$LIBXMU"; then
4474 dnl See libXmu.a check above.
4475 if test x$HAVE_X11XTR6 = xyes; then
4476 LIBS="-lXt -lSM -lICE $LIBXMU"
4478 OTHERLIBS="-lXt -$LIBXMU"
4481 [#include <X11/Intrinsic.h>
4482 #include <X11/Xmu/Editres.h>],
4483 [_XEditResCheckMessages (0, 0, 0, 0);],
4484 [AC_DEFINE([X_TOOLKIT_EDITRES], 1,
4485 [Define to 1 if we should use XEditRes.])])
4492 dnl Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
4493 dnl instead, there's a system variable _sys_nsig. Unfortunately, we
4494 dnl need the constant to dimension an array. So wire in the appropriate
4496 AC_DEFINE(NSIG_MINIMUM, 32, [Minimum value of NSIG.])
4500 emacs_broken_SIGIO=no
4503 dnl SIGIO exists, but the feature doesn't work in the way Emacs needs.
4504 hpux* | nacl | openbsd | sol2* | unixware )
4505 emacs_broken_SIGIO=yes
4509 dnl On AIX Emacs uses the gmalloc.c malloc implementation. But given
4510 dnl the way this system works, libc functions that return malloced
4511 dnl memory use the libc malloc implementation. Calling xfree or
4512 dnl xrealloc on the results of such functions results in a crash.
4514 dnl One solution for this could be to define SYSTEM_MALLOC in configure,
4515 dnl but that does not currently work on this system.
4517 dnl It is possible to completely override the malloc implementation on
4518 dnl AIX, but that involves putting the malloc functions in a shared
4519 dnl library and setting the MALLOCTYPE environment variable to point to
4520 dnl that shared library.
4522 dnl Emacs currently calls xrealloc on the results of get_current_dir name,
4523 dnl to avoid a crash just use the Emacs implementation for that function.
4525 dnl FIXME We could change the AC_CHECK_FUNCS call near the start
4526 dnl of this file, so that we do not check for get_current_dir_name
4527 dnl on AIX. But that might be fragile if something else ends
4528 dnl up testing for get_current_dir_name as a dependency.
4529 AC_DEFINE(BROKEN_GET_CURRENT_DIR_NAME, 1, [Define if
4530 get_current_dir_name should not be used.])
4534 dnl Circumvent a bug in FreeBSD. In the following sequence of
4535 dnl writes/reads on a PTY, read(2) returns bogus data:
4537 dnl write(2) 1022 bytes
4538 dnl write(2) 954 bytes, get EAGAIN
4539 dnl read(2) 1024 bytes in process_read_output
4540 dnl read(2) 11 bytes in process_read_output
4542 dnl That is, read(2) returns more bytes than have ever been written
4543 dnl successfully. The 1033 bytes read are the 1022 bytes written
4544 dnl successfully after processing (for example with CRs added if the
4545 dnl terminal is set up that way which it is here). The same bytes will
4546 dnl be seen again in a later read(2), without the CRs.
4547 AC_DEFINE(BROKEN_PTY_READ_AFTER_EAGAIN, 1, [Define on FreeBSD to
4548 work around an issue when reading from a PTY.])
4554 dnl FIXME Can't we test if this exists (eg /proc/$$)?
4555 AC_DEFINE(HAVE_PROCFS, 1, [Define if you have the /proc filesystem.])
4560 darwin | dragonfly | freebsd | netbsd | openbsd )
4561 AC_DEFINE(DONT_REOPEN_PTY, 1, [Define if process.c does not need to
4562 close a pty to make it a controlling terminal (it is already a
4563 controlling terminal of the subprocess, because we did ioctl TIOCSCTTY).])
4567 dnl FIXME Surely we can test for this rather than hard-code it.
4569 netbsd | openbsd) sound_device="/dev/audio" ;;
4570 *) sound_device="/dev/dsp" ;;
4574 AC_DEFINE_UNQUOTED(DEFAULT_SOUND_DEVICE, "$sound_device",
4575 [Name of the default sound device.])
4578 dnl Emacs can read input using SIGIO and buffering characters itself,
4579 dnl or using CBREAK mode and making C-g cause SIGINT.
4580 dnl The choice is controlled by the variable interrupt_input.
4582 dnl Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
4584 dnl Emacs uses the presence of the USABLE_SIGIO macro
4585 dnl to indicate whether or not signal-driven I/O is possible. It uses
4586 dnl INTERRUPT_INPUT to decide whether to use it by default.
4588 dnl SIGIO can be used only on systems that implement it (4.2 and 4.3).
4589 dnl CBREAK mode has two disadvantages
4590 dnl 1) At least in 4.2, it is impossible to handle the Meta key properly.
4591 dnl I hear that in system V this problem does not exist.
4592 dnl 2) Control-G causes output to be discarded.
4593 dnl I do not know whether this can be fixed in system V.
4595 dnl Another method of doing input is planned but not implemented.
4596 dnl It would have Emacs fork off a separate process
4597 dnl to read the input and send it to the true Emacs process
4600 darwin | gnu-linux | gnu-kfreebsd )
4601 AC_DEFINE(INTERRUPT_INPUT, 1, [Define to read input using SIGIO.])
4606 dnl If the system's imake configuration file defines 'NeedWidePrototypes'
4607 dnl as 'NO', we must define NARROWPROTO manually. Such a define is
4608 dnl generated in the Makefile generated by 'xmkmf'. If we don't define
4609 dnl NARROWPROTO, we will see the wrong function prototypes for X functions
4610 dnl taking float or double parameters.
4612 cygwin|gnu|gnu-linux|gnu-kfreebsd|freebsd|netbsd|openbsd)
4613 AC_DEFINE(NARROWPROTO, 1, [Define if system's imake configuration
4614 file defines 'NeedWidePrototypes' as 'NO'.])
4619 dnl Used in process.c, this must be a loop, even if it only runs once.
4620 AH_TEMPLATE(PTY_ITERATION, [How to iterate over PTYs.])
4621 dnl Only used if !PTY_ITERATION. Iterate from FIRST_PTY_LETTER to z,
4622 dnl trying suffixes 0-16.
4623 AH_TEMPLATE(FIRST_PTY_LETTER, [Letter to use in finding device name of
4624 first PTY, if PTYs are supported.])
4625 AH_TEMPLATE(PTY_OPEN, [How to open a PTY, if non-standard.])
4626 AH_TEMPLATE(PTY_NAME_SPRINTF, [How to get the device name of the control
4627 end of a PTY, if non-standard.])
4628 AH_TEMPLATE(PTY_TTY_NAME_SPRINTF, [How to get device name of the tty
4629 end of a PTY, if non-standard.])
4633 AC_DEFINE(PTY_ITERATION, [int c; for (c = 0; !c ; c++)])
4634 dnl You allocate a pty by opening /dev/ptc to get the master side.
4635 dnl To get the name of the slave side, you just ttyname() the master side.
4636 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptc");])
4637 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [strcpy (pty_name, ttyname (fd));])
4641 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4642 dnl multi-line AC_DEFINEs are hard. :(
4643 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)])
4644 AC_DEFINE(PTY_NAME_SPRINTF, [])
4645 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
4648 gnu | openbsd | qnxnto )
4649 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4652 gnu-linux | gnu-kfreebsd | dragonfly | freebsd | netbsd | darwin | nacl )
4654 if test "x$ac_cv_func_grantpt" = xyes; then
4655 AC_DEFINE(UNIX98_PTYS, 1, [Define if the system has Unix98 PTYs.])
4656 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4657 dnl Note that grantpt and unlockpt may fork. We must block SIGCHLD
4658 dnl to prevent sigchld_handler from intercepting the child's death.
4659 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); }])
4660 dnl if HAVE_POSIX_OPENPT
4661 if test "x$ac_cv_func_posix_openpt" = xyes; then
4662 AC_DEFINE(PTY_OPEN, [do { fd = posix_openpt (O_RDWR | O_CLOEXEC | O_NOCTTY); if (fd < 0 && errno == EINVAL) fd = posix_openpt (O_RDWR | O_NOCTTY); } while (false)])
4663 AC_DEFINE(PTY_NAME_SPRINTF, [])
4665 elif test "x$ac_cv_func_getpt" = xyes; then
4666 AC_DEFINE(PTY_OPEN, [fd = getpt ()])
4667 AC_DEFINE(PTY_NAME_SPRINTF, [])
4669 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4672 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4677 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4678 AC_DEFINE(PTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/ptym/pty%c%x", c, i);])
4679 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/pty/tty%c%x", c, i);])
4683 dnl On SysVr4, grantpt(3) forks a subprocess, so do not use
4684 dnl O_CLOEXEC when opening the pty, and keep the SIGCHLD handler
4685 dnl from intercepting that death. If any child but grantpt's should die
4686 dnl within, it should be caught after sigrelse(2).
4687 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4688 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); }])
4692 dnl Comments are as per sol2*.
4693 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4694 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); }])
4701 dnl This change means that we don't loop through allocate_pty too
4702 dnl many times in the (rare) event of a failure.
4703 AC_DEFINE(FIRST_PTY_LETTER, ['z'])
4704 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4705 dnl Push various streams modules onto a PTY channel. Used in process.c.
4706 AC_DEFINE(SETUP_SLAVE_PTY, [if (ioctl (forkin, I_PUSH, "ptem") == -1) fatal ("ioctl I_PUSH ptem"); if (ioctl (forkin, I_PUSH, "ldterm") == -1) fatal ("ioctl I_PUSH ldterm"); if (ioctl (forkin, I_PUSH, "ttcompat") == -1) fatal ("ioctl I_PUSH ttcompat");], [How to set up a slave PTY, if needed.])
4711 AH_TEMPLATE(SIGNALS_VIA_CHARACTERS, [Make process_send_signal work by
4712 "typing" a signal character on the pty.])
4715 dnl Perry Smith <pedz@ddivt1.austin.ibm.com> says this is correct for AIX.
4716 aix4-2 | cygwin | gnu | dragonfly | freebsd | netbsd | openbsd | darwin )
4717 AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4720 dnl 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works.
4721 dnl FIXME Does gnu-kfreebsd have linux/version.h? It seems unlikely...
4722 gnu-linux | gnu-kfreebsd )
4724 AC_CACHE_CHECK([for signals via characters], [emacs_cv_signals_via_chars],
4725 [AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4726 #include <linux/version.h>
4727 #if LINUX_VERSION_CODE < 0x20400
4728 # error "Linux version too old"
4730 ]], [[]])], emacs_cv_signals_via_chars=yes, emacs_cv_signals_via_chars=no)])
4732 test "$emacs_cv_signals_via_chars" = yes && AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4737 AH_TEMPLATE(TAB3, [Undocumented.])
4740 darwin) AC_DEFINE(TAB3, OXTABS) ;;
4742 gnu | dragonfly | freebsd | netbsd | openbsd )
4743 AC_DEFINE(TABDLY, OXTABS, [Undocumented.])
4744 AC_DEFINE(TAB3, OXTABS)
4747 gnu-linux | gnu-kfreebsd )
4748 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4752 ]], [[]])], AC_DEFINE(GC_MARK_SECONDARY_STACK(),
4753 [do { extern void *__libc_ia64_register_backing_store_base; __builtin_ia64_flushrs (); mark_memory (__libc_ia64_register_backing_store_base, __builtin_ia64_bsp ());} while (false)],
4754 [Mark a secondary stack, like the register stack on the ia64.]), [])
4758 AC_DEFINE(RUN_TIME_REMAP, 1, [Define if emacs.c needs to call
4759 run_time_remap; for HPUX.])
4764 dnl This won't be used automatically yet. We also need to know, at least,
4765 dnl that the stack is continuous.
4766 AH_TEMPLATE(GC_SETJMP_WORKS, [Define if setjmp is known to save all
4767 registers relevant for conservative garbage collection in the jmp_buf.])
4771 dnl Not all the architectures are tested, but there are Debian packages
4772 dnl for SCM and/or Guile on them, so the technique must work. See also
4773 dnl comments in alloc.c concerning setjmp and gcc.
4774 dnl Fixme: it's probably safe to just use the GCC conditional below.
4775 gnu-linux | gnu-kfreebsd )
4776 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4777 #if defined __i386__ || defined __sparc__ || defined __mc68000__ \
4778 || defined __alpha__ || defined __mips__ || defined __s390__ \
4779 || defined __arm__ || defined __powerpc__ || defined __amd64__ \
4780 || defined __ia64__ || defined __sh__
4783 # error "setjmp not known to work on this arch"
4785 ]], [[]])], AC_DEFINE(GC_SETJMP_WORKS, 1))
4790 if test x$GCC = xyes; then
4791 dnl GC_SETJMP_WORKS is nearly always appropriate for GCC.
4792 AC_DEFINE(GC_SETJMP_WORKS, 1)
4795 aix* | dragonfly | freebsd | netbsd | openbsd | sol2* )
4796 AC_DEFINE(GC_SETJMP_WORKS, 1)
4801 dnl In a weird quirk, MS runtime uses _setjmp and longjmp.
4802 AC_CACHE_CHECK([for _setjmp], [emacs_cv_func__setjmp],
4805 [[#include <setjmp.h>
4807 # define _longjmp longjmp
4812 _longjmp (j, 1);]])],
4813 [emacs_cv_func__setjmp=yes],
4814 [emacs_cv_func__setjmp=no])])
4815 if test $emacs_cv_func__setjmp = yes; then
4816 AC_DEFINE([HAVE__SETJMP], 1, [Define to 1 if _setjmp and _longjmp work.])
4819 # We need to preserve signal mask to handle C stack overflows.
4820 AC_CACHE_CHECK([for sigsetjmp], [emacs_cv_func_sigsetjmp],
4823 [[#include <setjmp.h>
4826 if (! sigsetjmp (j, 1))
4827 siglongjmp (j, 1);]])],
4828 [emacs_cv_func_sigsetjmp=yes],
4829 [emacs_cv_func_sigsetjmp=no])])
4830 if test $emacs_cv_func_sigsetjmp = yes; then
4831 AC_DEFINE([HAVE_SIGSETJMP], 1,
4832 [Define to 1 if sigsetjmp and siglongjmp work.])
4835 case $emacs_cv_func_sigsetjmp,$emacs_cv_alternate_stack,$opsys in
4836 yes,yes,* | *,*,mingw32)
4837 AC_DEFINE([HAVE_STACK_OVERFLOW_HANDLING], 1,
4838 [Define to 1 if C stack overflow can be handled in some cases.]);;
4843 dnl TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
4844 dnl subprocesses the usual way. But TIOCSIGNAL does work for PTYs,
4845 dnl and this is all we need.
4846 AC_DEFINE(TIOCSIGSEND, TIOCSIGNAL, [Some platforms redefine this.])
4853 dnl Used in xfaces.c.
4854 AC_DEFINE(XOS_NEEDS_TIME_H, 1, [Compensate for a bug in Xos.h on
4855 some systems, where it requires time.h.])
4860 dnl Define symbols to identify the version of Unix this is.
4861 dnl Define all the symbols that apply correctly.
4862 AH_TEMPLATE(DOS_NT, [Define if the system is MS DOS or MS Windows.])
4863 AH_TEMPLATE(MSDOS, [Define if the system is MS DOS.])
4864 AH_TEMPLATE(USG, [Define if the system is compatible with System III.])
4865 AH_TEMPLATE(USG5_4, [Define if the system is compatible with System V Release 4.])
4870 dnl This symbol should be defined on AIX Version 3 ???????
4871 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4873 # error "_AIX not defined"
4875 ]], [[]])], [], AC_DEFINE(_AIX, [], [Define if the system is AIX.]))
4879 AC_DEFINE(CYGWIN, 1, [Define if the system is Cygwin.])
4883 dnl Not __APPLE__, as this may not be defined on non-macOS Darwin.
4884 dnl Not DARWIN, because Panther and lower CoreFoundation.h use DARWIN to
4885 dnl distinguish macOS from pure Darwin.
4886 AC_DEFINE(DARWIN_OS, [], [Define if the system is Darwin.])
4889 gnu-linux | gnu-kfreebsd )
4891 AC_DEFINE(GNU_LINUX, [], [Define if ths system is compatible with GNU/Linux.])
4896 AC_DEFINE(HPUX, [], [Define if the system is HPUX.])
4900 AC_DEFINE(DOS_NT, [])
4901 AC_DEFINE(WINDOWSNT, 1, [Define if compiling for native MS Windows.])
4902 if test "x$ac_enable_checking" != "x" ; then
4903 AC_DEFINE(EMACSDEBUG, 1, [Define to 1 to enable w32 debug facilities.])
4909 AC_DEFINE(USG5_4, [])
4910 AC_DEFINE(SOLARIS2, [], [Define if the system is Solaris.])
4915 AC_DEFINE(USG5_4, [])
4919 AC_CACHE_CHECK([for usable FIONREAD], [emacs_cv_usable_FIONREAD],
4922 dnl BUILD 9008 - FIONREAD problem still exists in X-Windows.
4923 emacs_cv_usable_FIONREAD=no
4927 emacs_cv_usable_FIONREAD=yes
4932 [AC_LANG_PROGRAM([[#include <sys/types.h>
4933 #include <sys/ioctl.h>
4935 # include <sys/filio.h>
4938 [[int foo = ioctl (0, FIONREAD, &foo);]])],
4939 [emacs_cv_usable_FIONREAD=yes],
4940 [emacs_cv_usable_FIONREAD=no])
4943 if test $emacs_cv_usable_FIONREAD = yes; then
4944 AC_DEFINE([USABLE_FIONREAD], [1], [Define to 1 if FIONREAD is usable.])
4946 if test $emacs_broken_SIGIO = no; then
4947 AC_CACHE_CHECK([for usable SIGIO], [emacs_cv_usable_SIGIO],
4949 [AC_LANG_PROGRAM([[#include <fcntl.h>
4952 [[int foo = SIGIO | F_SETFL | FASYNC;]])],
4953 [emacs_cv_usable_SIGIO=yes],
4954 [emacs_cv_usable_SIGIO=no])],
4955 [emacs_cv_usable_SIGIO=yes],
4956 [emacs_cv_usable_SIGIO=no])
4957 if test $emacs_cv_usable_SIGIO = yes; then
4958 AC_DEFINE([USABLE_SIGIO], [1], [Define to 1 if SIGIO is usable.])
4965 dnl It works to open the pty's tty in the parent (Emacs), then
4966 dnl close and reopen it in the child.
4967 AC_DEFINE(USG_SUBTTY_WORKS, 1, [Define for USG systems where it
4968 works to open a pty's tty in the parent process, then close and
4969 reopen it in the child.])
4973 AC_DEFINE(_STRUCTURED_PROC, 1, [Needed for system_process_attributes
4978 # Set up the CFLAGS for real compilation, so we can substitute it.
4979 CFLAGS="$REAL_CFLAGS"
4980 CPPFLAGS="$REAL_CPPFLAGS"
4983 ## Hack to detect a buggy GCC version.
4984 if test "$GCC" = yes && \
4985 $CC --version 2> /dev/null | grep 'gcc.* 4.5.0' >/dev/null; then
4987 *-fno-optimize-sibling-calls*) ;;
4989 AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS.]);;
4993 version=$PACKAGE_VERSION
4995 copyright="Copyright (C) 2018 Free Software Foundation, Inc."
4996 AC_DEFINE_UNQUOTED(COPYRIGHT, ["$copyright"],
4997 [Short copyright string for this version of Emacs.])
5000 ### Specify what sort of things we'll be editing into Makefile and config.h.
5001 ### Use configuration here uncanonicalized to avoid exceeding size limits.
5003 AC_SUBST(configuration)
5008 AC_SUBST(exec_prefix)
5011 AC_SUBST(sharedstatedir)
5012 AC_SUBST(libexecdir)
5016 AC_SUBST(standardlisppath)
5017 AC_SUBST(locallisppath)
5019 AC_SUBST(x_default_search_path)
5021 AC_SUBST(archlibdir)
5027 ## FIXME? Nothing uses @LD_SWITCH_X_SITE@.
5028 ## src/Makefile.in did add LD_SWITCH_X_SITE (as a cpp define) to the
5029 ## end of LIBX_BASE, but nothing ever set it.
5030 AC_SUBST(LD_SWITCH_X_SITE)
5031 AC_SUBST(C_SWITCH_X_SITE)
5032 AC_SUBST(GNUSTEP_CFLAGS)
5034 ## Used in lwlib/Makefile.in.
5035 AC_SUBST(X_TOOLKIT_TYPE)
5037 AC_SUBST(ns_appbindir)
5038 AC_SUBST(ns_appresdir)
5040 AC_SUBST(GNU_OBJC_CFLAGS)
5041 AC_SUBST(OTHER_FILES)
5043 if test -n "${term_header}"; then
5044 AC_DEFINE_UNQUOTED(TERM_HEADER, "${term_header}",
5045 [Define to the header for the built-in window system.])
5048 AC_DEFINE_UNQUOTED(EMACS_CONFIGURATION, "${canonical}",
5049 [Define to the canonical Emacs configuration name.])
5050 AC_DEFINE_UNQUOTED(EMACS_CONFIG_OPTIONS, "${emacs_config_options}",
5051 [Define to the options passed to configure.])
5056 if test "${HAVE_X_WINDOWS}" = "yes" ; then
5057 AC_DEFINE(HAVE_X_WINDOWS, 1,
5058 [Define to 1 if you want to use the X window system.])
5060 XOBJ="xterm.o xfns.o xselect.o xrdb.o xsmfns.o xsettings.o"
5062 if test "$HAVE_CAIRO" = "yes"; then
5063 FONT_OBJ="ftfont.o ftcrfont.o"
5064 elif test "$HAVE_XFT" = "yes"; then
5065 FONT_OBJ="$FONT_OBJ ftfont.o xftfont.o ftxfont.o"
5066 elif test "$HAVE_FREETYPE" = "yes"; then
5067 FONT_OBJ="$FONT_OBJ ftfont.o ftxfont.o"
5077 if test "${USE_X_TOOLKIT}" != "none" ; then
5079 AC_DEFINE(USE_X_TOOLKIT, 1, [Define to 1 if using an X toolkit.])
5080 if test "${USE_X_TOOLKIT}" = "LUCID"; then
5081 AC_DEFINE(USE_LUCID, 1, [Define to 1 if using the Lucid X toolkit.])
5082 elif test "${USE_X_TOOLKIT}" = "MOTIF"; then
5083 AC_DEFINE(USE_MOTIF, 1, [Define to 1 if using the Motif X toolkit.])
5087 ## Paul Abrahams <abrahams at equinox.shaysnet.com> says this is needed.
5088 MOTIF_LIBW="$MOTIF_LIBW -lXpm"
5092 ## Richard Anthony Ryan <ryanr at ellingtn.ftc.nrcs.usda.gov>
5093 ## says -lXimp is needed in UNIX_SV ... 4.2 1.1.2.
5094 MOTIF_LIBW="MOTIF_LIBW -lXimp"
5098 ## olson@mcs.anl.gov says -li18n is needed by -lXm.
5099 MOTIF_LIBW="$MOTIF_LIBW -li18n"
5102 MOTIF_LIBW="$MOTIF_LIBW $LIBXP"
5105 AC_SUBST(WIDGET_OBJ)
5108 case "$USE_X_TOOLKIT" in
5109 MOTIF) TOOLKIT_LIBW="$MOTIF_LIBW" ;;
5110 LUCID) TOOLKIT_LIBW="$LUCID_LIBW" ;;
5111 none) test "x$HAVE_GTK" = "xyes" && TOOLKIT_LIBW="$GTK_LIBS" ;;
5113 if test "$HAVE_XWIDGETS" = "yes"; then
5114 TOOLKIT_LIBW="$TOOLKIT_LIBW -lXcomposite"
5116 AC_SUBST(TOOLKIT_LIBW)
5118 if test "${opsys}" != "mingw32"; then
5119 if test "$USE_X_TOOLKIT" = "none"; then
5120 LIBXT_OTHER="\$(LIBXSM)"
5122 LIBXT_OTHER="\$(LIBXMU) -lXt \$(LIBXTR6) -lXext"
5125 AC_SUBST(LIBXT_OTHER)
5127 if test "${HAVE_X11}" = "yes" ; then
5128 AC_DEFINE(HAVE_X11, 1,
5129 [Define to 1 if you want to use version 11 of X windows.])
5130 LIBX_OTHER="\$(LIBXT) \$(LIBX_EXTRA)"
5134 AC_SUBST(LIBX_OTHER)
5137 if test "$HAVE_GTK" = yes || test "$HAVE_X11" != yes; then
5139 elif test "$USE_X_TOOLKIT" = none; then
5141 LIBXMENU='$(oldXMenudir)/libXMenu11.a'
5142 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS oldXMenu"
5144 LIBXMENU='$(lwlibdir)/liblw.a'
5145 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS lwlib"
5149 if test "${GNU_MALLOC}" = "yes" ; then
5150 AC_DEFINE(GNU_MALLOC, 1,
5151 [Define to 1 if you want to use the GNU memory allocator.])
5155 if test "${REL_ALLOC}" = "yes" ; then
5156 AC_DEFINE(REL_ALLOC, 1,
5157 [Define REL_ALLOC if you want to use the relocating allocator for
5160 test "$system_malloc" != "yes" && RALLOC_OBJ=ralloc.o
5162 AC_SUBST(RALLOC_OBJ)
5164 if test "$opsys" = "cygwin"; then
5165 CYGWIN_OBJ="cygw32.o"
5166 ## Cygwin differs because of its unexec().
5168 POST_ALLOC_OBJ=lastfile.o
5169 elif test "$opsys" = "mingw32"; then
5172 POST_ALLOC_OBJ=lastfile.o
5175 PRE_ALLOC_OBJ=lastfile.o
5178 AC_SUBST(CYGWIN_OBJ)
5179 AC_SUBST(PRE_ALLOC_OBJ)
5180 AC_SUBST(POST_ALLOC_OBJ)
5182 dnl Call this 'FORTIFY_SOUR' so that it sorts before the 'FORTIFY_SOURCE'
5183 dnl verbatim defined above. The tricky name is apropos, as this hack
5184 dnl makes Fortify go sour!
5185 AH_VERBATIM([FORTIFY_SOUR],
5186 [/* Without the following workaround, Emacs runs slowly on OS X 10.8.
5187 The workaround disables some useful run-time checking, so it
5188 should be conditional to the platforms with the performance bug.
5189 Perhaps Apple will fix this some day; also see m4/extern-inline.m4. */
5190 #if defined __APPLE__ && defined __GNUC__
5191 # ifndef _DONT_USE_CTYPE_INLINE_
5192 # define _DONT_USE_CTYPE_INLINE_
5194 # ifndef _FORTIFY_SOURCE
5195 # define _FORTIFY_SOURCE 0
5200 # If user asks to omit features, disable optional features that gnulib
5201 # might otherwise enable.
5202 if test "$with_features" = no && test "$enable_acl" != yes; then
5206 # Configure gnulib. Although this does not affect CFLAGS or LIBS permanently.
5207 # it temporarily reverts them to their pre-pkg-config values,
5208 # because gnulib needs to work with both src (which uses the
5209 # pkg-config stuff) and lib-src (which does not). For example, gnulib
5210 # may need to determine whether LIB_CLOCK_GETTIME should contain -lrt,
5211 # and it therefore needs to run in an environment where LIBS does not
5212 # already contain -lrt merely because 'pkg-config --libs' printed '-lrt'
5213 # for some package unrelated to lib-src.
5216 CFLAGS=$pre_PKG_CONFIG_CFLAGS
5217 LIBS="$LIB_PTHREAD $pre_PKG_CONFIG_LIBS"
5218 gl_ASSERT_NO_GNULIB_POSIXCHECK
5219 gl_ASSERT_NO_GNULIB_TESTS
5224 if test "${opsys}" = "mingw32"; then
5225 CPPFLAGS="$CPPFLAGS -DUSE_CRT_DLL=1 -I \${abs_top_srcdir}/nt/inc"
5226 # Remove unneeded switches from the value of CC that goes to Makefiles
5227 CC=`AS_ECHO(["$CC"]) | sed -e "s,$GCC_TEST_OPTIONS,,"`
5231 aix4-2) LD_SWITCH_SYSTEM_TEMACS="-Wl,-bnodelcsect" ;;
5233 cygwin) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000" ;;
5236 ## The -headerpad option tells ld (see man page) to leave room at the
5237 ## end of the header for adding load commands. Needed for dumping.
5238 ## 0x1000 is enough for roughly 52 load commands on the x86_64
5239 ## architecture (where they are 78 bytes each). The actual number of
5240 ## load commands added is not consistent but normally ranges from
5241 ## about 14 to about 34. Setting it high gets us plenty of slop and
5242 ## only costs about 1.5K of wasted binary space.
5243 headerpad_extra=1000
5244 if test "$HAVE_NS" = "yes"; then
5245 libs_nsgui="-framework AppKit"
5246 if test "$NS_IMPL_COCOA" = "yes"; then
5247 libs_nsgui="$libs_nsgui -framework IOKit -framework Carbon"
5252 LD_SWITCH_SYSTEM_TEMACS="-fno-pie -prebind $libs_nsgui -Xlinker -headerpad -Xlinker $headerpad_extra"
5254 ## This is here because src/Makefile.in did some extra fiddling around
5255 ## with LD_SWITCH_SYSTEM. It seems cleaner to put this in
5256 ## LD_SWITCH_SYSTEM_TEMACS instead,
5257 test "x$LD_SWITCH_SYSTEM" = "x" && test "x$GCC" != "xyes" && \
5258 LD_SWITCH_SYSTEM_TEMACS="-X $LD_SWITCH_SYSTEM_TEMACS"
5261 ## LD_SWITCH_X_SITE_RPATH is a -rpath option saying where to
5262 ## find X at run-time.
5263 ## When handled by cpp, this was in LD_SWITCH_SYSTEM. However, at the
5264 ## point where configure sourced the s/*.h file, LD_SWITCH_X_SITE_RPATH
5265 ## had not yet been defined and was expanded to null. Hence LD_SWITCH_SYSTEM
5266 ## had different values in configure (in ac_link) and src/Makefile.in.
5267 ## It seems clearer therefore to put this piece in LD_SWITCH_SYSTEM_TEMACS.
5268 gnu*) LD_SWITCH_SYSTEM_TEMACS="\$(LD_SWITCH_X_SITE_RPATH)" ;;
5271 ## Is it any better under MinGW64 to relocate emacs into higher addresses?
5272 case "$canonical" in
5273 x86_64-*-*) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x400000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5274 *) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x01000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5278 *) LD_SWITCH_SYSTEM_TEMACS= ;;
5281 # -no-pie or -nopie fixes a temacs segfault on Gentoo, OpenBSD,
5282 # Ubuntu, and other systems with "hardened" GCC configurations for
5283 # some reason (Bug#18784). We don't know why this works, but not
5284 # segfaulting is better than segfaulting. Use ac_c_werror_flag=yes
5285 # when trying the option, otherwise clang keeps warning that it does
5286 # not understand it, and pre-4.6 GCC has a similar problem
5287 # (Bug#20338). Prefer -no-pie to -nopie, as -no-pie is the
5288 # spelling used by GCC 6.1.0 and later (Bug#24682).
5290 [for $CC option to disable position independent executables],
5291 [emacs_cv_prog_cc_no_pie],
5292 [if test "$CANNOT_DUMP" = yes; then
5293 emacs_cv_prog_cc_no_pie='not needed'
5295 emacs_save_c_werror_flag=$ac_c_werror_flag
5296 emacs_save_LDFLAGS=$LDFLAGS
5297 ac_c_werror_flag=yes
5298 for emacs_cv_prog_cc_no_pie in -no-pie -nopie no; do
5299 test $emacs_cv_prog_cc_no_pie = no && break
5300 LDFLAGS="$emacs_save_LDFLAGS $emacs_cv_prog_cc_no_pie"
5301 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [break])
5303 ac_c_werror_flag=$emacs_save_c_werror_flag
5304 LDFLAGS=$emacs_save_LDFLAGS
5306 case $emacs_cv_prog_cc_no_pie in
5308 LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS $emacs_cv_prog_cc_no_pie"
5312 if test x$ac_enable_profiling != x ; then
5314 *freebsd | gnu-linux) ;;
5315 *) LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -pg" ;;
5319 AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
5321 ## Common for all window systems
5322 if test "$window_system" != "none"; then
5323 AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])
5324 AC_DEFINE(POLL_FOR_INPUT, 1, [Define if you poll periodically to detect C-g.])
5325 WINDOW_SYSTEM_OBJ="fontset.o fringe.o image.o"
5328 AC_SUBST(WINDOW_SYSTEM_OBJ)
5330 AH_TOP([/* GNU Emacs site configuration template file.
5332 Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2018
5333 Free Software Foundation, Inc.
5335 This file is part of GNU Emacs.
5337 GNU Emacs is free software: you can redistribute it and/or modify
5338 it under the terms of the GNU General Public License as published by
5339 the Free Software Foundation, either version 3 of the License, or (at
5340 your option) any later version.
5342 GNU Emacs is distributed in the hope that it will be useful,
5343 but WITHOUT ANY WARRANTY; without even the implied warranty of
5344 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5345 GNU General Public License for more details.
5347 You should have received a copy of the GNU General Public License
5348 along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
5351 /* No code in Emacs #includes config.h twice, but some bits of code
5352 intended to work with other packages as well (like gmalloc.c)
5353 think they can include it as many times as they like. */
5354 #ifndef EMACS_CONFIG_H
5355 #define EMACS_CONFIG_H
5358 AH_BOTTOM([#include <conf_post.h>
5360 #endif /* EMACS_CONFIG_H */
5369 #### Report on what we decided to do.
5370 #### Report GTK as a toolkit, even if it doesn't use Xt.
5371 #### It makes printing result more understandable as using GTK sets
5372 #### toolkit_scroll_bars to yes by default.
5373 if test "${HAVE_GTK}" = "yes"; then
5374 USE_X_TOOLKIT="$USE_GTK_TOOLKIT"
5377 if test $USE_ACL -ne 0; then
5378 ACL_SUMMARY="yes $LIB_ACL"
5383 emacs_standard_dirs='Standard dirs'
5385 Configured for '${canonical}'.
5387 Where should the build process find the source code? ${srcdir}
5388 What compiler should emacs be built with? ${CC} ${CFLAGS}
5389 Should Emacs use the GNU version of malloc? ${GNU_MALLOC}${GNU_MALLOC_reason}
5390 Should Emacs use a relocating allocator for buffers? ${REL_ALLOC}
5391 Should Emacs use mmap(2) for buffer allocation? $use_mmap_for_buffers
5392 What window system should Emacs use? ${window_system}
5393 What toolkit should Emacs use? ${USE_X_TOOLKIT}
5394 Where do we find X Windows header files? ${x_includes:-$emacs_standard_dirs}
5395 Where do we find X Windows libraries? ${x_libraries:-$emacs_standard_dirs}"])
5398 emacs_config_features=
5399 for opt in XAW3D XPM JPEG TIFF GIF PNG RSVG CAIRO IMAGEMAGICK SOUND GPM DBUS \
5400 GCONF GSETTINGS NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT \
5401 LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS X_TOOLKIT OLDXMENU X11 NS MODULES \
5402 THREADS XWIDGETS LIBSYSTEMD JSON CANNOT_DUMP LCMS2; do
5405 CANNOT_DUMP) eval val=\${$opt} ;;
5406 NOTIFY|ACL) eval val=\${${opt}_SUMMARY} ;;
5407 TOOLKIT_SCROLL_BARS|X_TOOLKIT) eval val=\${USE_$opt} ;;
5408 THREADS) val=${threads_enabled} ;;
5409 *) eval val=\${HAVE_$opt} ;;
5412 xno|xnone|x) continue ;;
5417 GTK*|LUCID|MOTIF) opt=$val ;;
5422 AS_VAR_APPEND([emacs_config_features], ["$optsep$opt"])
5425 AC_DEFINE_UNQUOTED(EMACS_CONFIG_FEATURES, "${emacs_config_features}",
5426 [Summary of some of the main features enabled by configure.])
5428 AS_ECHO([" Does Emacs use -lXaw3d? ${HAVE_XAW3D}
5429 Does Emacs use -lXpm? ${HAVE_XPM}
5430 Does Emacs use -ljpeg? ${HAVE_JPEG}
5431 Does Emacs use -ltiff? ${HAVE_TIFF}
5432 Does Emacs use a gif library? ${HAVE_GIF} $LIBGIF
5433 Does Emacs use a png library? ${HAVE_PNG} $LIBPNG
5434 Does Emacs use -lrsvg-2? ${HAVE_RSVG}
5435 Does Emacs use cairo? ${HAVE_CAIRO}
5436 Does Emacs use -llcms2? ${HAVE_LCMS2}
5437 Does Emacs use imagemagick (version 6)? ${HAVE_IMAGEMAGICK}
5438 Does Emacs support sound? ${HAVE_SOUND}
5439 Does Emacs use -lgpm? ${HAVE_GPM}
5440 Does Emacs use -ldbus? ${HAVE_DBUS}
5441 Does Emacs use -lgconf? ${HAVE_GCONF}
5442 Does Emacs use GSettings? ${HAVE_GSETTINGS}
5443 Does Emacs use a file notification library? ${NOTIFY_SUMMARY}
5444 Does Emacs use access control lists? ${ACL_SUMMARY}
5445 Does Emacs use -lselinux? ${HAVE_LIBSELINUX}
5446 Does Emacs use -lgnutls? ${HAVE_GNUTLS}
5447 Does Emacs use -lxml2? ${HAVE_LIBXML2}
5448 Does Emacs use -lfreetype? ${HAVE_FREETYPE}
5449 Does Emacs use -lm17n-flt? ${HAVE_M17N_FLT}
5450 Does Emacs use -lotf? ${HAVE_LIBOTF}
5451 Does Emacs use -lxft? ${HAVE_XFT}
5452 Does Emacs use -lsystemd? ${HAVE_LIBSYSTEMD}
5453 Does Emacs use -ljansson? ${HAVE_JSON}
5454 Does Emacs directly use zlib? ${HAVE_ZLIB}
5455 Does Emacs have dynamic modules support? ${HAVE_MODULES}
5456 Does Emacs use toolkit scroll bars? ${USE_TOOLKIT_SCROLL_BARS}
5457 Does Emacs support Xwidgets (requires gtk3)? ${HAVE_XWIDGETS}
5458 Does Emacs have threading support in lisp? ${threads_enabled}
5461 if test -n "${EMACSDATA}"; then
5462 AS_ECHO([" Environment variable EMACSDATA set to: $EMACSDATA"])
5464 if test -n "${EMACSDOC}"; then
5465 AS_ECHO([" Environment variable EMACSDOC set to: $EMACSDOC"])
5470 if test "$HAVE_NS" = "yes"; then
5472 AS_ECHO(["You must run \"${MAKE-make} install\" in order to test the built application.
5473 The installed application will go to nextstep/Emacs.app and can be
5474 run or moved from there."])
5475 if test "$EN_NS_SELF_CONTAINED" = "yes"; then
5476 echo "The application will be fully self-contained."
5478 AS_ECHO(["The lisp resources for the application will be installed under ${prefix}.
5479 You may need to run \"${MAKE-make} install\" with sudo. The application will fail
5480 to run if these resources are not installed."])
5485 case $opsys,$emacs_uname_r in
5487 AC_MSG_WARN([[building Emacs on Cygwin 1.5 is not supported.]])
5492 # Remove any trailing slashes in these variables.
5494 */) prefix=`AS_DIRNAME(["$prefix."])`;;
5496 case $exec_prefix in
5497 */) exec_prefix=`AS_DIRNAME(["$exec_prefix."])`;;
5500 if test "$HAVE_NS" = "yes"; then
5501 if test "$NS_IMPL_GNUSTEP" = yes; then
5502 AC_CONFIG_FILES([nextstep/GNUstep/Emacs.base/Resources/Info-gnustep.plist:nextstep/templates/Info-gnustep.plist.in \
5503 nextstep/GNUstep/Emacs.base/Resources/Emacs.desktop:nextstep/templates/Emacs.desktop.in])
5504 ns_check_file=Resources/Info-gnustep.plist
5506 AC_CONFIG_FILES([nextstep/Cocoa/Emacs.base/Contents/Info.plist:nextstep/templates/Info.plist.in \
5507 nextstep/Cocoa/Emacs.base/Contents/Resources/English.lproj/InfoPlist.strings:nextstep/templates/InfoPlist.strings.in])
5508 ns_check_file=Contents/Info.plist
5510 AC_SUBST(ns_check_file)
5513 AC_CONFIG_FILES([Makefile lib/gnulib.mk])
5515 dnl config.status treats $srcdir specially, so I think this is ok...
5516 AC_CONFIG_FILES([$srcdir/doc/man/emacs.1])
5518 m4_define([subdir_makefiles],
5519 [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])
5520 SUBDIR_MAKEFILES="subdir_makefiles"
5521 AC_CONFIG_FILES(subdir_makefiles)
5523 dnl test/ is not present in release tarfiles.
5524 opt_makefile=test/Makefile
5526 if test -f "$srcdir/$opt_makefile.in"; then
5527 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
5528 dnl Again, it's best not to use a variable. Though you can add
5529 dnl ", [], [opt_makefile='$opt_makefile']" and it should work.
5530 AC_CONFIG_FILES([test/Makefile])
5534 dnl The admin/ directory used to be excluded from tarfiles.
5535 if test -d $srcdir/admin; then
5536 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES admin/charsets/Makefile admin/unidata/Makefile admin/grammars/Makefile"
5537 AC_CONFIG_FILES([admin/charsets/Makefile])
5538 AC_CONFIG_FILES([admin/unidata/Makefile])
5539 AC_CONFIG_FILES([admin/grammars/Makefile])
5543 SUBDIR_MAKEFILES_IN=`echo " ${SUBDIR_MAKEFILES}" | sed -e 's| | $(srcdir)/|g' -e 's|Makefile|Makefile.in|g'`
5545 AC_SUBST(SUBDIR_MAKEFILES_IN)
5547 dnl You might wonder (I did) why epaths.h is generated by running make,
5548 dnl rather than just letting configure generate it from epaths.in.
5549 dnl One reason is that the various paths are not fully expanded (see above);
5550 dnl e.g., gamedir='${localstatedir}/games/emacs'.
5551 dnl Secondly, the GNU Coding standards require that one should be able
5552 dnl to run 'make prefix=/some/where/else' and override the values set
5553 dnl by configure. This also explains the 'move-if-change' test and
5554 dnl the use of force in the 'epaths-force' rule in Makefile.in.
5555 AC_CONFIG_COMMANDS([src/epaths.h], [
5556 if test "${opsys}" = "mingw32"; then
5557 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force-w32
5559 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force
5560 fi || AC_MSG_ERROR(['src/epaths.h' could not be made.])
5561 ], [GCC="$GCC" CPPFLAGS="$CPPFLAGS" opsys="$opsys"])
5563 dnl NB we have to cheat and use the ac_... version because abs_top_srcdir
5564 dnl is not yet set, sigh. Or we could use ../$srcdir/src/.gdbinit,
5566 AC_CONFIG_COMMANDS([src/.gdbinit], [
5567 if test ! -f src/.gdbinit && test -f "$srcdir/src/.gdbinit"; then
5568 AS_ECHO(["source $ac_abs_top_srcdir/src/.gdbinit"]) > src/.gdbinit
5572 dnl Perhaps this would be better named doc-emacs-emacsver.texi?
5573 dnl See comments for etc-refcards-emacsver.tex.
5574 dnl Since we get a doc/emacs directory generated anyway, for the Makefile,
5575 dnl it is not quite the same. But we are generating in $srcdir.
5576 AC_CONFIG_COMMANDS([doc/emacs/emacsver.texi], [
5577 ${MAKE-make} -s --no-print-directory -C doc/emacs doc-emacsver || \
5578 AC_MSG_ERROR(['doc/emacs/emacsver.texi' could not be made.])
5581 dnl If we give this the more natural name, etc/refcards/emacsver.texi,
5582 dnl then a directory etc/refcards is created in the build directory,
5583 dnl which is probably harmless, but confusing (in out-of-tree builds).
5584 dnl (If we were to generate etc/refcards/Makefile, this might change.)
5585 dnl It is really $srcdir/etc/refcards/emacsver.tex that we generate.
5586 AC_CONFIG_COMMANDS([etc-refcards-emacsver.tex], [
5587 ${MAKE-make} -s MAKEFILE_NAME=do-not-make-Makefile etc-emacsver || \
5588 AC_MSG_ERROR(['etc/refcards/emacsver.tex' could not be made.])
5591 if test $AUTO_DEPEND = yes; then
5592 for dir in $AUTODEPEND_PARENTS; do
5593 AS_MKDIR_P([$dir/deps])
5599 if test ! "$with_mailutils"; then
5600 if test "$with_pop" = yes; then
5601 AC_MSG_WARN([This configuration installs a 'movemail' program
5602 that retrieves POP3 email via only insecure channels.
5603 To omit insecure POP3, you can use '$0 --without-pop'.])
5604 elif test "$with_pop" = no-by-default; then
5605 AC_MSG_WARN([This configuration installs a 'movemail' program
5606 that does not retrieve POP3 email. By default, Emacs 25 and earlier
5607 installed a 'movemail' program that retrieved POP3 email via only
5608 insecure channels, a practice that is no longer recommended but that
5609 you can continue to support by using '$0 --with-pop'.])
5614 # Don't suggest GNU Mailutils, as it hasn't been ported.
5617 emacs_fix_movemail="use '$0 --with-mailutils'"
5618 case `(movemail --version) 2>/dev/null` in
5620 *) emacs_fix_movemail="install GNU Mailutils
5621 <https://mailutils.org> and $emacs_fix_movemail";;
5623 AC_MSG_NOTICE([You might want to $emacs_fix_movemail.]);;
5627 test "$MAKE" = make || AC_MSG_NOTICE([Now you can run '$MAKE'.])