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 $opsys = gnu-linux; then
1230 if test "${SETFATTR+set}" != set; then
1231 AC_CACHE_CHECK([for setfattr],
1232 [emacs_cv_prog_setfattr],
1234 if (setfattr -n user.pax.flags conftest.tmp) >/dev/null 2>&1; then
1235 emacs_cv_prog_setfattr=yes
1237 emacs_cv_prog_setfattr=no
1239 if test "$emacs_cv_prog_setfattr" = yes; then
1240 PAXCTL_notdumped='$(SETFATTR) -n user.pax.flags -v er'
1246 AC_SUBST([SETFATTR])
1249 case $opsys,$PAXCTL_notdumped,$emacs_uname_r in
1250 gnu-linux,,* | netbsd,,[0-7].*)
1251 AC_PATH_PROG([PAXCTL], [paxctl], [],
1252 [$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR/usr/sbin])
1253 if test -n "$PAXCTL"; then
1254 if test "$opsys" = netbsd; then
1255 PAXCTL_dumped='$(PAXCTL) +a'
1256 PAXCTL_notdumped=$PAXCTL_dumped
1258 AC_MSG_CHECKING([whether binaries have a PT_PAX_FLAGS header])
1259 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1260 [if $PAXCTL -v conftest$EXEEXT >/dev/null 2>&1; then
1261 AC_MSG_RESULT([yes])
1266 if test -n "$PAXCTL"; then
1267 PAXCTL_dumped='$(PAXCTL) -zex'
1268 PAXCTL_notdumped='$(PAXCTL) -r'
1273 AC_SUBST([PAXCTL_dumped])
1274 AC_SUBST([PAXCTL_notdumped])
1276 # Makeinfo on macOS is ancient, check whether there is a more recent
1277 # version installed by Homebrew.
1278 AC_CHECK_PROGS(BREW, [brew])
1279 if test -n "$BREW"; then
1280 AC_PATH_PROG([MAKEINFO], [makeinfo], [],
1281 [`$BREW --prefix texinfo 2>/dev/null`/bin$PATH_SEPARATOR$PATH])
1284 ## Require makeinfo >= 4.13 (last of the 4.x series) to build the manuals.
1285 if test "${MAKEINFO:=makeinfo}" != "no"; then
1286 case `($MAKEINFO --version) 2>/dev/null` in
1287 *' (GNU texinfo) '4.1[[3-9]]* | \
1288 *' (GNU texinfo) '[[5-9]]* | \
1289 *' (GNU texinfo) '[[1-9][0-9]]* ) ;;
1294 ## Makeinfo is unusual. For a released Emacs, the manuals are
1295 ## pre-built, and not deleted by the normal clean rules. makeinfo is
1296 ## therefore in the category of "special tools" not normally required, which
1297 ## configure does not have to check for (eg autoconf itself).
1298 ## In a repository checkout on the other hand, the manuals are not included.
1299 ## So makeinfo is a requirement to build from the repository, and configure
1300 ## should test for it as it does for any other build requirement.
1301 ## We use the presence of $srcdir/info/emacs to distinguish a release,
1302 ## with pre-built manuals, from a repository checkout.
1305 if test "$MAKEINFO" = "no"; then
1307 if test "x${with_makeinfo}" = "xno"; then
1309 elif test ! -e "$srcdir/info/emacs" && test ! -e "$srcdir/info/emacs.info"; then
1310 AC_MSG_ERROR( [You do not seem to have makeinfo >= 4.13, and your
1311 source tree does not seem to have pre-built manuals in the 'info' directory.
1312 Either install a suitable version of makeinfo, or re-run configure
1313 with the '--without-makeinfo' option to build without the manuals.] )
1316 AC_SUBST([MAKEINFO])
1317 AC_SUBST(HAVE_MAKEINFO)
1319 if test $opsys = mingw32; then
1320 DOCMISC_W32=efaq-w32
1324 AC_SUBST(DOCMISC_W32)
1326 dnl Add our options to ac_link now, after it is set up.
1328 if test x$GCC = xyes; then
1329 test "x$GCC_LINK_TEST_OPTIONS" != x && \
1330 ac_link="$ac_link $GCC_LINK_TEST_OPTIONS"
1332 test "x$NON_GCC_LINK_TEST_OPTIONS" != x && \
1333 ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
1336 dnl We need -znocombreloc if we're using a relatively recent GNU ld.
1337 dnl If we can link with the flag, it shouldn't do any harm anyhow.
1338 dnl Treat GCC specially since it just gives a non-fatal 'unrecognized option'
1339 dnl if not built to support GNU ld.
1341 dnl For a long time, -znocombreloc was added to LDFLAGS rather than
1342 dnl LD_SWITCH_SYSTEM_TEMACS. That is:
1343 dnl * inappropriate, as LDFLAGS is a user option but this is essential.
1344 dnl Eg "make LDFLAGS=... all" could run into problems,
1345 dnl https://bugs.debian.org/684788
1346 dnl * unnecessary, since temacs is the only thing that actually needs it.
1347 dnl Indeed this is where it was originally, prior to:
1348 dnl https://lists.gnu.org/r/emacs-pretest-bug/2004-03/msg00170.html
1349 if test x$GCC = xyes; then
1350 LDFLAGS_NOCOMBRELOC="-Wl,-znocombreloc"
1352 LDFLAGS_NOCOMBRELOC="-znocombreloc"
1355 AC_CACHE_CHECK([for -znocombreloc], [emacs_cv_znocombreloc],
1356 [late_LDFLAGS="$LDFLAGS"
1357 LDFLAGS="$LDFLAGS $LDFLAGS_NOCOMBRELOC"
1359 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1360 [emacs_cv_znocombreloc=yes], [emacs_cv_znocombreloc=no])
1362 LDFLAGS="$late_LDFLAGS"])
1364 if test x$emacs_cv_znocombreloc = xno; then
1365 LDFLAGS_NOCOMBRELOC=
1369 AC_CACHE_CHECK([whether addresses are sanitized],
1370 [emacs_cv_sanitize_address],
1373 [[#ifndef __has_feature
1374 #define __has_feature(f) 0
1376 #if defined __SANITIZE_ADDRESS__ || __has_feature (address_sanitizer)
1378 error "Addresses are not sanitized.";
1381 [emacs_cv_sanitize_address=yes],
1382 [emacs_cv_sanitize_address=no])])
1384 dnl The function dump-emacs will not be defined and temacs will do
1385 dnl (load "loadup") automatically unless told otherwise.
1386 test "x$CANNOT_DUMP" = "x" && CANNOT_DUMP=no
1388 nacl) CANNOT_DUMP=yes ;;
1391 if test "$CANNOT_DUMP" = "yes"; then
1392 AC_DEFINE(CANNOT_DUMP, 1, [Define if Emacs cannot be dumped on your system.])
1393 elif test "$emacs_cv_sanitize_address" = yes; then
1394 AC_MSG_WARN([[Addresses are sanitized; suggest CANNOT_DUMP=yes]])
1397 AC_SUBST(CANNOT_DUMP)
1400 UNEXEC_OBJ=unexelf.o
1402 # MSDOS uses unexcoff.o
1404 UNEXEC_OBJ=unexaix.o
1410 UNEXEC_OBJ=unexmacosx.o
1413 UNEXEC_OBJ=unexhp9k800.o
1416 UNEXEC_OBJ=unexw32.o
1419 # Use the Solaris dldump() function, called from unexsol.c, to dump
1420 # emacs, instead of the generic ELF dump code found in unexelf.c.
1421 # The resulting binary has a complete symbol table, and is better
1422 # for debugging and other observability tools (debuggers, pstack, etc).
1424 # It is likely that dldump() works with older Solaris too, but this has
1425 # not been tested, so for now this change is for Solaris 10 or newer.
1426 UNEXEC_OBJ=unexsol.o
1429 test "$CANNOT_DUMP" = "yes" && UNEXEC_OBJ=
1434 ## Let 'ld' find image libs and similar things in /usr/local/lib.
1435 ## The system compiler, GCC, has apparently been modified to not
1436 ## look there, contrary to what a stock GCC would do.
1437 ### It's not our place to do this. See bug#10313#17.
1438 ### LD_SWITCH_SYSTEM=-L/usr/local/lib
1443 ## cpp test was "ifdef __mips__", but presumably this is equivalent...
1444 case $host_cpu in mips*) LD_SWITCH_SYSTEM="-G 0";; esac
1448 ### It's not our place to do this. See bug#10313#17.
1449 ### LD_SWITCH_SYSTEM="-Wl,-rpath,/usr/pkg/lib -L/usr/pkg/lib -Wl,-rpath,/usr/local/lib -L/usr/local/lib"
1454 ## Han Boetes <han@boetes.org> says this is necessary,
1455 ## otherwise Emacs dumps core on elf systems.
1456 LD_SWITCH_SYSTEM="-Z"
1459 AC_SUBST(LD_SWITCH_SYSTEM)
1461 ac_link="$ac_link $LD_SWITCH_SYSTEM"
1463 ## This setting of LD_SWITCH_SYSTEM references LD_SWITCH_X_SITE_RPATH,
1464 ## which has not been defined yet. When this was handled with cpp,
1465 ## it was expanded to null when configure sourced the s/*.h file.
1466 ## Thus LD_SWITCH_SYSTEM had different values in configure and the Makefiles.
1467 ## FIXME it would be cleaner to put this in LD_SWITCH_SYSTEM_TEMACS
1468 ## (or somesuch), but because it is supposed to go at the _front_
1469 ## of LD_SWITCH_SYSTEM, we cannot do that in exactly the same way.
1470 ## Compare with the gnu-linux case below, which added to the end
1471 ## of LD_SWITCH_SYSTEM, and so can instead go at the front of
1472 ## LD_SWITCH_SYSTEM_TEMACS.
1475 LD_SWITCH_SYSTEM="\$(LD_SWITCH_X_SITE_RPATH) $LD_SWITCH_SYSTEM" ;;
1482 AC_CHECK_DECL([__ELF__])
1483 if test "$ac_cv_have_decl___ELF__" = "yes"; then
1484 ## With ELF, make sure that all common symbols get allocated to in the
1485 ## data section. Otherwise, the dump of temacs may miss variables in
1486 ## the shared library that have been initialized. For example, with
1487 ## GNU libc, __malloc_initialized would normally be resolved to the
1488 ## shared library's .bss section, which is fatal.
1489 if test "x$GCC" = "xyes"; then
1490 C_SWITCH_MACHINE="-fno-common"
1492 AC_MSG_ERROR([Non-GCC compilers are not supported.])
1495 dnl This was the unexalpha.c case. Removed in 24.1, 2010-07-24,
1496 dnl albeit under the mistaken assumption that said file
1497 dnl was no longer used.
1498 AC_MSG_ERROR([Non-ELF systems are not supported since Emacs 24.1.])
1502 AC_SUBST(C_SWITCH_MACHINE)
1504 AC_SUBST(UNEXEC_OBJ)
1507 ## Some programs in src produce warnings saying certain subprograms
1508 ## are too complex and need a MAXMEM value greater than 2000 for
1509 ## additional optimization. --nils@exp-math.uni-essen.de
1510 test "$opsys" = "aix4.2" && test "x$GCC" != "xyes" && \
1511 C_SWITCH_SYSTEM="-ma -qmaxmem=4000"
1512 if test "$opsys" = "mingw32"; then
1513 case "$canonical" in
1514 x86_64-*-mingw*) C_SWITCH_SYSTEM="-mtune=generic" ;;
1515 *) C_SWITCH_SYSTEM="-mtune=pentium4" ;;
1518 ## gnu-linux might need -D_BSD_SOURCE on old libc5 systems.
1519 ## It is redundant in glibc2, since we define _GNU_SOURCE.
1520 AC_SUBST(C_SWITCH_SYSTEM)
1525 ## IBM's X11R5 uses -lIM and -liconv in AIX 3.2.2.
1526 aix4-2) LIBS_SYSTEM="-lrts -lIM -liconv" ;;
1528 freebsd|dragonfly) LIBS_SYSTEM="-lutil" ;;
1530 hpux*) LIBS_SYSTEM="-l:libdld.sl" ;;
1532 qnxnto) LIBS_SYSTEM="-lsocket" ;;
1534 sol2*) LIBS_SYSTEM="-lsocket -lnsl" ;;
1536 ## Motif needs -lgen.
1537 unixware) LIBS_SYSTEM="-lsocket -lnsl -lelf -lgen" ;;
1540 AC_SUBST(LIBS_SYSTEM)
1542 ### Make sure subsequent tests use flags consistent with the build flags.
1544 if test x"${OVERRIDE_CPPFLAGS}" != x; then
1545 CPPFLAGS="${OVERRIDE_CPPFLAGS}"
1547 CPPFLAGS="$C_SWITCH_SYSTEM $C_SWITCH_MACHINE $CPPFLAGS"
1550 # Suppress obsolescent Autoconf test for size_t; Emacs assumes C99 or better.
1551 AC_DEFUN([AC_TYPE_SIZE_T])
1552 # Likewise for obsolescent test for uid_t, gid_t; Emacs assumes them.
1553 AC_DEFUN([AC_TYPE_UID_T])
1555 # sqrt and other floating-point functions such as fmod and frexp
1556 # are found in -lm on many systems.
1558 AC_SEARCH_LIBS([sqrt], [m])
1559 if test "X$LIBS" = "X$OLD_LIBS"; then
1562 LIB_MATH=$ac_cv_search_sqrt
1566 dnl Current possibilities handled by sed (aix4-2 -> aix,
1567 dnl gnu-linux -> gnu/linux, etc.):
1568 dnl gnu, gnu/linux, gnu/kfreebsd, aix, cygwin, darwin, hpux.
1569 dnl And special cases: berkeley-unix, usg-unix-v, ms-dos, windows-nt.
1570 SYSTEM_TYPE=`echo $opsys | sed -e 's/[[0-9]].*//' -e 's|-|/|'`
1577 ## Adding -lm confuses the dynamic linker, so omit it.
1580 freebsd | dragonfly )
1581 SYSTEM_TYPE=berkeley-unix
1583 gnu-linux | gnu-kfreebsd )
1585 hpux10-20 | hpux11 )
1589 SYSTEM_TYPE=windows-nt
1591 dnl NB this may be adjusted below.
1593 SYSTEM_TYPE=berkeley-unix
1597 SYSTEM_TYPE=usg-unix-v
1603 AC_DEFINE_UNQUOTED(SYSTEM_TYPE, "$SYSTEM_TYPE",
1604 [The type of system you are compiling for; sets 'system-type'.])
1605 AC_SUBST([SYSTEM_TYPE])
1608 pre_PKG_CONFIG_CFLAGS=$CFLAGS
1609 pre_PKG_CONFIG_LIBS=$LIBS
1611 PKG_PROG_PKG_CONFIG(0.9.0)
1613 dnl EMACS_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4)
1614 dnl acts like PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4,
1615 dnl HAVE_GSTUFF=yes, HAVE_GSTUFF=no) -- see pkg-config man page --
1616 dnl except that it postprocesses CFLAGS as needed for --enable-gcc-warnings.
1617 dnl EMACS_CHECK_MODULES accepts optional 3rd and 4th arguments that
1618 dnl can take the place of the default HAVE_GSTUFF=yes and HAVE_GSTUFF=no
1620 AC_DEFUN([EMACS_CHECK_MODULES],
1621 [PKG_CHECK_MODULES([$1], [$2],
1622 [$1_CFLAGS=`AS_ECHO(["$$1_CFLAGS"]) | sed -e "$edit_cflags"`
1623 m4_default([$3], [HAVE_$1=yes])],
1624 [m4_default([$4], [HAVE_$1=no])])])
1627 if test "${with_sound}" != "no"; then
1628 # Sound support for GNU/Linux, the free BSDs, MinGW, and Cygwin.
1629 AC_CHECK_HEADERS([machine/soundcard.h sys/soundcard.h soundcard.h mmsystem.h],
1630 have_sound_header=yes, [], [
1632 #define WIN32_LEAN_AND_MEAN
1633 #include <windows.h>
1636 test "${with_sound}" = "oss" && test "${have_sound_header}" != "yes" && \
1637 AC_MSG_ERROR([OSS sound support requested but not found.])
1639 if test "${with_sound}" = "bsd-ossaudio" || test "${with_sound}" = "yes"; then
1640 # Emulation library used on NetBSD.
1641 AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
1642 test "${with_sound}" = "bsd-ossaudio" && test -z "$LIBSOUND" && \
1643 AC_MSG_ERROR([bsd-ossaudio sound support requested but not found.])
1644 dnl FIXME? If we did find ossaudio, should we set with_sound=bsd-ossaudio?
1645 dnl Traditionally, we go on to check for alsa too. Does that make sense?
1649 if test "${with_sound}" = "alsa" || test "${with_sound}" = "yes"; then
1651 ALSA_MODULES="alsa >= $ALSA_REQUIRED"
1652 EMACS_CHECK_MODULES([ALSA], [$ALSA_MODULES])
1653 if test $HAVE_ALSA = yes; then
1654 SAVE_CFLAGS="$CFLAGS"
1656 CFLAGS="$ALSA_CFLAGS $CFLAGS"
1657 LIBS="$ALSA_LIBS $LIBS"
1658 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <asoundlib.h>]], [[snd_lib_error_set_handler (0);]])],
1659 emacs_alsa_normal=yes,
1660 emacs_alsa_normal=no)
1661 if test "$emacs_alsa_normal" != yes; then
1662 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <alsa/asoundlib.h>]],
1663 [[snd_lib_error_set_handler (0);]])],
1664 emacs_alsa_subdir=yes,
1665 emacs_alsa_subdir=no)
1666 if test "$emacs_alsa_subdir" != yes; then
1667 AC_MSG_ERROR([pkg-config found alsa, but it does not compile. See config.log for error messages.])
1669 ALSA_CFLAGS="$ALSA_CFLAGS -DALSA_SUBDIR_INCLUDE"
1672 CFLAGS="$SAVE_CFLAGS"
1674 LIBSOUND="$LIBSOUND $ALSA_LIBS"
1675 CFLAGS_SOUND="$CFLAGS_SOUND $ALSA_CFLAGS"
1676 AC_DEFINE(HAVE_ALSA, 1, [Define to 1 if ALSA is available.])
1677 elif test "${with_sound}" = "alsa"; then
1678 AC_MSG_ERROR([ALSA sound support requested but not found.])
1680 fi dnl with_sound = alsa|yes
1682 dnl Define HAVE_SOUND if we have sound support. We know it works and
1683 dnl compiles only on the specified platforms. For others, it
1684 dnl probably doesn't make sense to try.
1685 dnl FIXME So surely we should bypass this whole section if not using
1686 dnl one of these platforms?
1687 if test x$have_sound_header = xyes || test $HAVE_ALSA = yes; then
1689 dnl defined __FreeBSD__ || defined __NetBSD__ || defined __linux__
1690 dnl Adjust the --with-sound help text if you change this.
1691 gnu-linux|freebsd|netbsd|mingw32|cygwin)
1692 AC_DEFINE(HAVE_SOUND, 1, [Define to 1 if you have sound support.])
1698 AC_SUBST(CFLAGS_SOUND)
1701 dnl checks for header files
1702 AC_CHECK_HEADERS_ONCE(
1709 sys/utsname.h pwd.h utmp.h util.h sys/prctl.h)
1711 AC_CACHE_CHECK([for ADDR_NO_RANDOMIZE],
1712 [emacs_cv_personality_addr_no_randomize],
1714 [AC_LANG_PROGRAM([[#include <sys/personality.h>]],
1715 [[personality (personality (0xffffffff)
1716 | ADDR_NO_RANDOMIZE)]])],
1717 [emacs_cv_personality_addr_no_randomize=yes],
1718 [emacs_cv_personality_addr_no_randomize=no])])
1719 if test $emacs_cv_personality_addr_no_randomize = yes; then
1720 AC_DEFINE([HAVE_PERSONALITY_ADDR_NO_RANDOMIZE], [1],
1721 [Define to 1 if personality flag ADDR_NO_RANDOMIZE exists.])
1724 # Note that Solaris has sys/sysinfo.h which defines struct
1725 # sysinfo as well. To make sure that we're using GNU/Linux
1726 # sysinfo, we explicitly set one of its fields.
1727 if test "$ac_cv_header_sys_sysinfo_h" = yes; then
1728 AC_CACHE_CHECK([if Linux sysinfo may be used], [emacs_cv_linux_sysinfo],
1729 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1730 [[struct sysinfo si;
1733 emacs_cv_linux_sysinfo=yes, emacs_cv_linux_sysinfo=no)])
1735 if test $emacs_cv_linux_sysinfo = yes; then
1736 AC_DEFINE([HAVE_LINUX_SYSINFO], 1, [Define to 1 if you have Linux sysinfo function.])
1737 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1738 [[struct sysinfo si; return si.mem_unit]])],
1739 AC_DEFINE(LINUX_SYSINFO_UNIT, 1,
1740 [Define to 1 if Linux sysinfo sizes are in multiples of mem_unit bytes.]))
1744 dnl On Solaris 8 there's a compilation warning for term.h because
1745 dnl it doesn't define 'bool'.
1746 AC_CHECK_HEADERS(term.h, , , -)
1748 AC_CHECK_DECLS([sys_siglist], [], [], [[#include <signal.h>
1750 if test $ac_cv_have_decl_sys_siglist != yes; then
1751 # For Tru64, at least:
1752 AC_CHECK_DECLS([__sys_siglist], [], [], [[#include <signal.h>
1757 AC_CHECK_HEADERS_ONCE(sys/socket.h)
1758 AC_CHECK_HEADERS(net/if.h, , , [AC_INCLUDES_DEFAULT
1759 #if HAVE_SYS_SOCKET_H
1760 #include <sys/socket.h>
1762 AC_CHECK_HEADERS(ifaddrs.h, , , [AC_INCLUDES_DEFAULT
1763 #if HAVE_SYS_SOCKET_H
1764 #include <sys/socket.h>
1766 AC_CHECK_HEADERS(net/if_dl.h, , , [AC_INCLUDES_DEFAULT
1767 #if HAVE_SYS_SOCKET_H
1768 #include <sys/socket.h>
1771 dnl checks for structure members
1772 AC_CHECK_MEMBERS([struct ifreq.ifr_flags, struct ifreq.ifr_hwaddr,
1773 struct ifreq.ifr_netmask, struct ifreq.ifr_broadaddr,
1774 struct ifreq.ifr_addr,
1775 struct ifreq.ifr_addr.sa_len], , ,
1776 [AC_INCLUDES_DEFAULT
1777 #if HAVE_SYS_SOCKET_H
1778 #include <sys/socket.h>
1784 dnl Check for endianness.
1785 dnl AC_C_BIGENDIAN is done by gnulib.
1787 dnl check for Make feature
1790 AUTODEPEND_PARENTS='lib src'
1791 dnl check if we have GCC and autodepend is on.
1792 if test "$GCC" = yes && test "$ac_enable_autodepend" = yes; then
1793 AC_CACHE_CHECK([whether gcc understands -MMD -MF], [emacs_cv_autodepend],
1794 [SAVE_CFLAGS="$CFLAGS"
1795 CFLAGS="$CFLAGS -MMD -MF deps.d -MP"
1796 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1797 [emacs_cv_autodepend=yes], [emacs_cv_autodepend=no])
1798 CFLAGS="$SAVE_CFLAGS"
1799 test -f deps.d || emacs_cv_autodepend=no
1801 if test $emacs_cv_autodepend = yes; then
1805 AC_SUBST(AUTO_DEPEND)
1807 #### Choose a window system.
1809 ## We leave window_system equal to none if
1810 ## we end up building without one. Any new window system should
1811 ## set window_system to an appropriate value and add objects to
1812 ## window-system-specific substs.
1816 if test "$no_x" != yes; then
1820 LD_SWITCH_X_SITE_RPATH=
1821 if test "${x_libraries}" != NONE; then
1822 if test -n "${x_libraries}"; then
1823 LD_SWITCH_X_SITE=-L`AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -L/g'`
1824 LD_SWITCH_X_SITE_RPATH=-Wl,-rpath,`
1825 AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -Wl,-rpath,/g'
1828 x_default_search_path=""
1829 x_search_path=${x_libraries}
1830 if test -z "${x_search_path}"; then
1831 x_search_path=/usr/lib
1833 for x_library in `AS_ECHO(["$x_search_path:"]) | \
1834 sed -e "s/:/ /g" -e p -e "s:/lib[[^ /]]* :/share :g"`; do
1836 ${x_library}/X11/%L/%T/%N%C%S:\
1837 ${x_library}/X11/%l/%T/%N%C%S:\
1838 ${x_library}/X11/%T/%N%C%S:\
1839 ${x_library}/X11/%L/%T/%N%S:\
1840 ${x_library}/X11/%l/%T/%N%S:\
1841 ${x_library}/X11/%T/%N%S"
1842 if test x"${x_default_search_path}" = x; then
1843 x_default_search_path=${x_search_path}
1845 x_default_search_path="${x_search_path}:${x_default_search_path}"
1849 AC_SUBST(LD_SWITCH_X_SITE_RPATH)
1851 if test "${x_includes}" != NONE && test -n "${x_includes}"; then
1852 C_SWITCH_X_SITE=$isystem`AS_ECHO(["$x_includes"]) | sed -e "s/:/ $isystem/g"`
1855 if test x"${x_includes}" = x; then
1856 bitmapdir=/usr/include/X11/bitmaps
1858 # accumulate include directories that have X11 bitmap subdirectories
1860 for bmd in `AS_ECHO(["$x_includes"]) | sed -e 's/:/ /g'`; do
1861 if test -d "${bmd}/X11/bitmaps"; then
1862 bmd_acc="${bmd_acc}:${bmd}/X11/bitmaps"
1864 if test -d "${bmd}/bitmaps"; then
1865 bmd_acc="${bmd_acc}:${bmd}/bitmaps"
1868 bitmapdir=${bmd_acc#:}
1871 test "${with_ns}" = maybe && test "${opsys}" != darwin && with_ns=no
1873 NS_GNUSTEP_CONFIG=no
1876 tmp_CPPFLAGS="$CPPFLAGS"
1877 tmp_CFLAGS="$CFLAGS"
1878 CPPFLAGS="$CPPFLAGS -x objective-c"
1879 CFLAGS="$CFLAGS -x objective-c"
1882 if test "${with_ns}" != no; then
1883 if test "${opsys}" = darwin; then
1885 ns_appdir=`pwd`/nextstep/Emacs.app
1886 ns_appbindir=${ns_appdir}/Contents/MacOS
1887 ns_appresdir=${ns_appdir}/Contents/Resources
1888 ns_appsrc=Cocoa/Emacs.base
1889 ns_fontfile=macfont.o
1890 elif flags=$( (gnustep-config --objc-flags) 2>/dev/null); then
1892 NS_GNUSTEP_CONFIG=yes
1893 GNU_OBJC_CFLAGS=$flags
1894 LIBS_GNUSTEP=$(gnustep-config --gui-libs) || exit
1895 elif test -f $GNUSTEP_CONFIG_FILE; then
1897 dnl FIXME sourcing this several times in subshells seems inefficient.
1898 GNUSTEP_SYSTEM_HEADERS=$(
1899 . $GNUSTEP_CONFIG_FILE
1900 AS_ECHO(["$GNUSTEP_SYSTEM_HEADERS"])
1902 GNUSTEP_SYSTEM_LIBRARIES=$(
1903 . $GNUSTEP_CONFIG_FILE
1904 AS_ECHO(["$GNUSTEP_SYSTEM_LIBRARIES"])
1906 dnl I seemed to need these as well with GNUstep-startup 0.25.
1907 GNUSTEP_LOCAL_HEADERS=$(
1908 . $GNUSTEP_CONFIG_FILE
1909 AS_ECHO(["$GNUSTEP_LOCAL_HEADERS"])
1911 GNUSTEP_LOCAL_LIBRARIES=$(
1912 . $GNUSTEP_CONFIG_FILE
1913 AS_ECHO(["$GNUSTEP_LOCAL_LIBRARIES"])
1915 test "x${GNUSTEP_LOCAL_HEADERS}" != "x" && \
1916 GNUSTEP_LOCAL_HEADERS="-I${GNUSTEP_LOCAL_HEADERS}"
1917 test "x${GNUSTEP_LOCAL_LIBRARIES}" != "x" && \
1918 GNUSTEP_LOCAL_LIBRARIES="-L${GNUSTEP_LOCAL_LIBRARIES}"
1919 CPPFLAGS="$CPPFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1920 CFLAGS="$CFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1921 LDFLAGS="$LDFLAGS -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES}"
1922 LIBS_GNUSTEP="-lgnustep-gui -lgnustep-base -lobjc -lpthread"
1923 dnl GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS to 0 or 1.
1924 dnl If they had chosen to either define it or not, we could have
1925 dnl just used AC_CHECK_DECL here.
1926 AC_CACHE_CHECK(if GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS,
1927 emacs_cv_objc_exceptions,
1928 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <GNUstepBase/GSConfig.h>]],
1929 [[#if defined BASE_NATIVE_OBJC_EXCEPTIONS && BASE_NATIVE_OBJC_EXCEPTIONS > 0
1933 #endif]])], emacs_cv_objc_exceptions=yes, emacs_cv_objc_exceptions=no ) )
1934 if test $emacs_cv_objc_exceptions = yes; then
1935 dnl _NATIVE_OBJC_EXCEPTIONS is used by the GNUstep headers.
1936 AC_DEFINE(_NATIVE_OBJC_EXCEPTIONS, 1,
1937 [Define if GNUstep uses ObjC exceptions.])
1938 GNU_OBJC_CFLAGS="-fobjc-exceptions"
1941 if test $NS_IMPL_GNUSTEP = yes; then
1942 ns_appdir=`pwd`/nextstep/Emacs.app
1943 ns_appbindir=${ns_appdir}
1944 ns_appresdir=${ns_appdir}/Resources
1945 ns_appsrc=GNUstep/Emacs.base
1946 ns_fontfile=nsfont.o
1949 dnl This is only used while we test the NS headers, it gets reset below.
1950 CPPFLAGS="$CPPFLAGS $GNU_OBJC_CFLAGS"
1951 CFLAGS="$CFLAGS $GNU_OBJC_CFLAGS"
1953 AC_CHECK_HEADER([AppKit/AppKit.h], [HAVE_NS=yes],
1954 [AC_MSG_ERROR([The include files (AppKit/AppKit.h etc) that
1955 are required for a Nextstep build are missing or cannot be compiled.
1956 Either fix this, or re-configure with the option '--without-ns'.])])
1959 if test "${NS_IMPL_COCOA}" = "yes"; then
1960 AC_MSG_CHECKING([for Mac OS X 10.6 or newer])
1961 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <AppKit/AppKit.h>],
1963 #ifdef MAC_OS_X_VERSION_MAX_ALLOWED
1964 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
1967 error "Mac OS X 10.6 or newer required";
1971 ns_osx_have_106=yes,
1973 AC_MSG_RESULT([$ns_osx_have_106])
1975 if test $ns_osx_have_106 = no; then
1976 AC_MSG_ERROR([Mac OS X 10.6 or newer is required]);
1981 AC_SUBST(LIBS_GNUSTEP)
1983 INSTALL_ARCH_INDEP_EXTRA=install-etc
1984 ns_self_contained=no
1987 if test "${HAVE_NS}" = yes; then
1988 if test "$with_toolkit_scroll_bars" = "no"; then
1989 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for Nextstep.])
1992 window_system=nextstep
1993 # set up packaging dirs
1994 if test "${EN_NS_SELF_CONTAINED}" = yes; then
1995 ns_self_contained=yes
1996 prefix=${ns_appresdir}
1997 exec_prefix=${ns_appbindir}
1998 dnl This one isn't really used, only archlibdir is.
1999 libexecdir="\${ns_appbindir}/libexec"
2000 archlibdir="\${ns_appbindir}/libexec"
2001 etcdocdir="\${ns_appresdir}/etc"
2002 etcdir="\${ns_appresdir}/etc"
2003 dnl FIXME maybe set datarootdir instead.
2004 dnl That would also get applications, icons, man.
2005 infodir="\${ns_appresdir}/info"
2006 mandir="\${ns_appresdir}/man"
2007 lispdir="\${ns_appresdir}/lisp"
2008 test "$locallisppathset" = no && locallisppath=""
2009 INSTALL_ARCH_INDEP_EXTRA=
2012 NS_OBJC_OBJ="nsterm.o nsfns.o nsmenu.o nsselect.o nsimage.o $ns_fontfile"
2014 CFLAGS="$tmp_CFLAGS"
2015 CPPFLAGS="$tmp_CPPFLAGS"
2016 AC_SUBST(INSTALL_ARCH_INDEP_EXTRA)
2017 AC_SUBST(ns_self_contained)
2019 AC_SUBST(NS_OBJC_OBJ)
2021 if test "${HAVE_NS}" = yes; then
2023 [if the Objective C compiler supports instancetype],
2024 [emacs_cv_objc_instancetype],
2025 [AC_LANG_PUSH([Objective C])
2027 [AC_LANG_SOURCE([[@interface Test
2028 + (instancetype)test;
2030 emacs_cv_objc_instancetype=yes,
2031 emacs_cv_objc_instancetype=no)
2032 AC_LANG_POP([Objective C])])
2034 if test x$emacs_cv_objc_instancetype = xyes ; then
2035 AC_DEFINE(NATIVE_OBJC_INSTANCETYPE, 1,
2036 [Define if ObjC compiler supports instancetype natively.])
2048 if test "${with_w32}" != no; then
2051 AC_CHECK_HEADER([windows.h], [HAVE_W32=yes],
2052 [AC_MSG_ERROR(['--with-w32' was specified, but windows.h
2053 cannot be found.])])
2056 ## Using --with-w32 with MinGW is a no-op, but we allow it.
2059 AC_MSG_ERROR([Using w32 with an autotools build is only supported for Cygwin and MinGW32.])
2064 if test "${opsys}" = "mingw32"; then
2065 AC_CACHE_CHECK([whether Windows API headers are recent enough], [emacs_cv_w32api],
2066 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2067 #include <windows.h>
2068 #include <usp10.h>]],
2069 [[PIMAGE_NT_HEADERS pHeader;
2070 PIMAGE_SECTION_HEADER pSection = IMAGE_FIRST_SECTION(pHeader)]])],
2071 [emacs_cv_w32api=yes], [emacs_cv_w32api=no])])
2072 if test "${emacs_cv_w32api}" = "no"; then
2073 AC_MSG_ERROR([the Windows API headers are too old to support this build.])
2075 HAVE_W32=${emacs_cv_w32api}
2085 if test "${HAVE_W32}" = "yes"; then
2086 AC_DEFINE(HAVE_NTGUI, 1, [Define to use native MS Windows GUI.])
2087 if test "$with_toolkit_scroll_bars" = "no"; then
2088 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for w32 build.])
2090 AC_CHECK_TOOL(WINDRES, [windres],
2091 [AC_MSG_ERROR([No resource compiler found.])])
2092 W32_OBJ="w32fns.o w32menu.o w32reg.o w32font.o w32term.o"
2093 W32_OBJ="$W32_OBJ w32xfns.o w32select.o w32uniscribe.o w32cygwinx.o"
2094 EMACSRES="emacs.res"
2095 case "$canonical" in
2096 x86_64-*-*) EMACS_MANIFEST="emacs-x64.manifest" ;;
2097 *) EMACS_MANIFEST="emacs-x86.manifest" ;;
2099 dnl Construct something of the form "24,4,0,0" with 4 components.
2100 comma_version=`echo "${PACKAGE_VERSION}.0.0" | sed -e 's/\./,/g' -e 's/^\([[^,]]*,[[^,]]*,[[^,]]*,[[^,]]*\).*/\1/'`
2102 comma_space_version=`echo "$comma_version" | sed 's/,/, /g'`
2103 AC_SUBST(comma_version)
2104 AC_SUBST(comma_space_version)
2105 AC_CONFIG_FILES([nt/emacs.rc nt/emacsclient.rc])
2106 if test "${opsys}" = "cygwin"; then
2107 W32_LIBS="$W32_LIBS -lkernel32 -luser32 -lusp10 -lgdi32"
2108 W32_LIBS="$W32_LIBS -lole32 -lcomdlg32 -lcomctl32 -lwinspool"
2109 # Tell the linker that emacs.res is an object (which we compile from
2110 # the rc file), not a linker script.
2111 W32_RES_LINK="-Wl,emacs.res"
2113 W32_OBJ="$W32_OBJ w32.o w32console.o w32heap.o w32inevt.o w32proc.o"
2114 W32_LIBS="$W32_LIBS -lwinmm -lusp10 -lgdi32 -lcomdlg32"
2115 W32_LIBS="$W32_LIBS -lmpr -lwinspool -lole32 -lcomctl32"
2116 W32_RES_LINK="\$(EMACSRES)"
2117 CLIENTRES="emacsclient.res"
2118 CLIENTW="emacsclientw\$(EXEEXT)"
2119 FIRSTFILE_OBJ=firstfile.o
2122 LIBS_ECLIENT="-lcomctl32"
2123 LIB_WSOCK32="-lwsock32"
2124 NTLIB="ntlib.$ac_objext"
2125 XARGS_LIMIT="-s 10000"
2129 if test "${HAVE_W32}" = "no" && test "${opsys}" = "cygwin"; then
2130 W32_LIBS="-lkernel32"
2131 W32_OBJ="w32cygwinx.o"
2137 AC_SUBST(EMACS_MANIFEST)
2140 AC_SUBST(W32_RES_LINK)
2141 AC_SUBST(FIRSTFILE_OBJ)
2144 AC_SUBST(LIBS_ECLIENT)
2145 AC_SUBST(LIB_WSOCK32)
2147 AC_SUBST(XARGS_LIMIT)
2149 if test "${HAVE_W32}" = "yes"; then
2154 ## $window_system is now set to the window system we will
2162 case "${window_system}" in
2167 case "${with_x_toolkit}" in
2168 athena | lucid ) USE_X_TOOLKIT=LUCID ;;
2169 motif ) USE_X_TOOLKIT=MOTIF ;;
2171 term_header=gtkutil.h
2172 dnl Don't set this for GTK. A lot of tests below assumes Xt when
2173 dnl USE_X_TOOLKIT is set.
2174 USE_X_TOOLKIT=none ;;
2175 gtk2 ) with_gtk2=yes
2176 term_header=gtkutil.h
2177 USE_X_TOOLKIT=none ;;
2178 gtk3 ) with_gtk3=yes
2179 term_header=gtkutil.h
2180 USE_X_TOOLKIT=none ;;
2181 no ) USE_X_TOOLKIT=none ;;
2182 dnl If user did not say whether to use a toolkit, make this decision later:
2183 dnl use the toolkit if we have gtk, or X11R5 or newer.
2184 * ) USE_X_TOOLKIT=maybe ;;
2188 term_header=nsterm.h
2191 term_header=w32term.h
2195 if test "$window_system" = none && test "X$with_x" != "Xno"; then
2196 AC_CHECK_PROG(HAVE_XSERVER, X, true, false)
2197 if test "$HAVE_XSERVER" = true ||
2198 test -n "$DISPLAY" ||
2200 for emacs_libX11 in /usr/lib/libX11.*; do break; done
2201 test "$emacs_libX11" != '/usr/lib/libX11.*'
2204 AC_MSG_ERROR([You seem to be running X, but no X development libraries
2205 were found. You should install the relevant development files for X
2206 and for the toolkit you want, such as Gtk+ or Motif. Also make
2207 sure you have development files for image handling, i.e.
2208 tiff, gif, jpeg, png and xpm.
2209 If you are sure you want Emacs compiled without X window support, pass
2215 # Does the opsystem file prohibit the use of the GNU malloc?
2216 # Assume not, until told otherwise.
2220 [whether malloc is Doug Lea style],
2221 [emacs_cv_var_doug_lea_malloc],
2222 [emacs_cv_var_doug_lea_malloc=no
2223 dnl Hooks do not work with address sanitization.
2224 if test "$emacs_cv_sanitize_address" != yes; then
2227 [[#include <malloc.h>
2228 static void hook (void) {}]],
2229 [[malloc_set_state (malloc_get_state ());
2230 __after_morecore_hook = hook;
2231 __malloc_initialize_hook = hook;]])],
2232 [emacs_cv_var_doug_lea_malloc=yes])
2234 doug_lea_malloc=$emacs_cv_var_doug_lea_malloc
2239 test "$CANNOT_DUMP" = yes ||
2241 ## darwin ld insists on the use of malloc routines in the System framework.
2242 darwin | mingw32 | nacl | sol2-10) ;;
2243 cygwin | qnxnto | freebsd)
2246 *) test "$ac_cv_func_sbrk" = yes && system_malloc=$emacs_cv_sanitize_address;;
2249 if test "${system_malloc}" != yes && test "${doug_lea_malloc}" != yes \
2250 && test "${UNEXEC_OBJ}" = unexelf.o; then
2256 if test "${system_malloc}" = "yes"; then
2257 AC_DEFINE([SYSTEM_MALLOC], 1,
2258 [Define to 1 to use the system memory allocator, even if it is not
2262 (The GNU allocators don't work with this system configuration.)"
2264 elif test "$hybrid_malloc" = yes; then
2265 AC_DEFINE(HYBRID_MALLOC, 1,
2266 [Define to use gmalloc before dumping and the system malloc after.])
2269 GNU_MALLOC_reason=" (only before dumping)"
2270 GMALLOC_OBJ=gmalloc.o
2273 test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
2274 VMLIMIT_OBJ=vm-limit.o
2276 AC_CHECK_HEADERS([sys/vlimit.h])
2277 AC_CACHE_CHECK([for data_start], [emacs_cv_data_start],
2280 [[extern char data_start[]; char ch;]],
2281 [[return data_start < &ch;]])],
2282 [emacs_cv_data_start=yes],
2283 [emacs_cv_data_start=no])])
2284 if test $emacs_cv_data_start = yes; then
2285 AC_DEFINE([HAVE_DATA_START], 1,
2286 [Define to 1 if data_start is the address of the start
2287 of the main data segment.])
2290 AC_SUBST([HYBRID_MALLOC])
2291 AC_SUBST(GMALLOC_OBJ)
2292 AC_SUBST(VMLIMIT_OBJ)
2294 if test "$doug_lea_malloc" = "yes" && test "$hybrid_malloc" != yes; then
2295 if test "$GNU_MALLOC" = yes ; then
2297 (Using Doug Lea's new malloc from the GNU C Library.)"
2299 AC_DEFINE(DOUG_LEA_MALLOC, 1,
2300 [Define to 1 if the system memory allocator is Doug Lea style,
2301 with malloc hooks and malloc_set_state.])
2303 ## Use mmap directly for allocating larger buffers.
2304 ## FIXME this comes from src/s/{gnu,gnu-linux}.h:
2305 ## #ifdef DOUG_LEA_MALLOC; #undef REL_ALLOC; #endif
2306 ## Does the AC_FUNC_MMAP test below make this check unnecessary?
2308 mingw32|gnu*) REL_ALLOC=no ;;
2312 if test x"${REL_ALLOC}" = x; then
2313 REL_ALLOC=${GNU_MALLOC}
2316 use_mmap_for_buffers=no
2318 mingw32) use_mmap_for_buffers=yes ;;
2322 if test $use_mmap_for_buffers = yes; then
2323 AC_DEFINE(USE_MMAP_FOR_BUFFERS, 1, [Define to use mmap to allocate buffer text.])
2327 LIBS="$LIBS_SYSTEM $LIBS"
2329 dnl FIXME replace main with a function we actually want from this library.
2330 AC_CHECK_LIB(Xbsd, main, LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -lXbsd")
2332 dnl Check for the POSIX thread library.
2334 AC_CHECK_HEADERS_ONCE(pthread.h)
2335 if test "$ac_cv_header_pthread_h" && test "$opsys" != "mingw32"; then
2336 AC_CACHE_CHECK([for pthread library],
2337 [emacs_cv_pthread_lib],
2338 [emacs_cv_pthread_lib=no
2340 for emacs_pthread_lib in 'none needed' -lpthread; do
2341 case $emacs_pthread_lib in
2342 -*) LIBS="$OLD_LIBS $emacs_pthread_lib";;
2346 [[#include <pthread.h>
2348 sigset_t old_mask, new_mask;
2349 void noop (void) {}]],
2350 [[pthread_t th = pthread_self ();
2352 status += pthread_create (&th, 0, 0, 0);
2353 status += pthread_sigmask (SIG_BLOCK, &new_mask, &old_mask);
2354 status += pthread_kill (th, 0);
2355 #if ! (defined SYSTEM_MALLOC || defined HYBRID_MALLOC \
2356 || defined DOUG_LEA_MALLOC)
2357 /* Test for pthread_atfork only if gmalloc uses it,
2358 as older-style hosts like MirBSD 10 lack it. */
2359 status += pthread_atfork (noop, noop, noop);
2362 [emacs_cv_pthread_lib=$emacs_pthread_lib])
2364 if test "$emacs_cv_pthread_lib" != no; then
2368 if test "$emacs_cv_pthread_lib" != no; then
2369 AC_DEFINE([HAVE_PTHREAD], 1, [Define to 1 if you have POSIX threads.])
2370 case $emacs_cv_pthread_lib in
2371 -*) LIB_PTHREAD=$emacs_cv_pthread_lib;;
2373 ac_cv_func_pthread_sigmask=yes
2374 # Some systems optimize for single-threaded programs by default, and
2375 # need special flags to disable these optimizations. For example, the
2376 # definition of 'errno' in <errno.h>.
2379 AC_DEFINE([_REENTRANT], 1,
2380 [Define to 1 if your system requires this in multithreaded code.]);;
2382 AC_DEFINE([_THREAD_SAFE], 1,
2383 [Define to 1 if your system requires this in multithreaded code.]);;
2387 AC_SUBST([LIB_PTHREAD])
2389 AC_MSG_CHECKING([for thread support])
2391 if test "$with_threads" = yes; then
2392 if test "$emacs_cv_pthread_lib" != no; then
2393 AC_DEFINE(THREADS_ENABLED, 1,
2394 [Define to 1 if you want elisp thread support.])
2396 elif test "${opsys}" = "mingw32"; then
2397 dnl MinGW can do native Windows threads even without pthreads
2398 AC_DEFINE(THREADS_ENABLED, 1,
2399 [Define to 1 if you want elisp thread support.])
2403 AC_MSG_RESULT([$threads_enabled])
2405 dnl Check for need for bigtoc support on IBM AIX
2409 AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
2411 yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
2412 *) gdb_cv_bigtoc=-bbigtoc ;;
2415 LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
2416 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[int i;]])], [], [gdb_cv_bigtoc=])
2421 # Change CFLAGS, CPPFLAGS, and LIBS temporarily so that C_SWITCH_X_SITE
2422 # is for the tests that follow. We set them back later on.
2424 REAL_CFLAGS="$CFLAGS"
2425 REAL_CPPFLAGS="$CPPFLAGS"
2428 if test "${HAVE_X11}" = "yes"; then
2429 DEFS="$C_SWITCH_X_SITE $DEFS"
2430 LDFLAGS="$LDFLAGS $LD_SWITCH_X_SITE"
2432 CFLAGS="$C_SWITCH_X_SITE $CFLAGS"
2433 CPPFLAGS="$C_SWITCH_X_SITE $CPPFLAGS"
2435 # On Solaris, arrange for LD_RUN_PATH to point to the X libraries for tests.
2436 # This is handled by LD_SWITCH_X_SITE_RPATH during the real build,
2437 # but it's more convenient here to set LD_RUN_PATH since this
2438 # also works on hosts that don't understand LD_SWITCH_X_SITE_RPATH.
2439 if test "${x_libraries}" != NONE && test -n "${x_libraries}"; then
2440 LD_RUN_PATH=$x_libraries${LD_RUN_PATH+:}$LD_RUN_PATH
2444 if test "${opsys}" = "gnu-linux"; then
2445 AC_CACHE_CHECK([whether X on GNU/Linux needs -b to link], [emacs_cv_b_link],
2446 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2447 [[XOpenDisplay ("foo");]])],
2448 [xgnu_linux_first_failure=no],
2449 [xgnu_linux_first_failure=yes])
2450 if test "${xgnu_linux_first_failure}" = "yes"; then
2451 OLD_CPPFLAGS="$CPPFLAGS"
2453 CPPFLAGS="$CPPFLAGS -b i486-linuxaout"
2454 LIBS="$LIBS -b i486-linuxaout"
2455 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2456 [[XOpenDisplay ("foo");]])],
2457 [xgnu_linux_second_failure=no],
2458 [xgnu_linux_second_failure=yes])
2459 if test "${xgnu_linux_second_failure}" = "yes"; then
2460 # If we get the same failure with -b, there is no use adding -b.
2461 # So leave it out. This plays safe.
2466 CPPFLAGS=$OLD_CPPFLAGS
2471 if test "x$emacs_cv_b_link" = xyes ; then
2472 LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -b i486-linuxaout"
2473 C_SWITCH_X_SITE="$C_SWITCH_X_SITE -b i486-linuxaout"
2477 # Reportedly, some broken Solaris systems have XKBlib.h but are missing
2478 # header files included from there.
2479 AC_CACHE_CHECK([for Xkb], [emacs_cv_xkb],
2480 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>
2481 #include <X11/XKBlib.h>]],
2482 [[XkbDescPtr kb = XkbGetKeyboard (0, XkbAllComponentsMask, XkbUseCoreKbd);]])],
2483 emacs_cv_xkb=yes, emacs_cv_xkb=no)])
2484 if test $emacs_cv_xkb = yes; then
2485 AC_DEFINE(HAVE_XKB, 1, [Define to 1 if you have the Xkb extension.])
2488 AC_CHECK_FUNCS(XrmSetDatabase XScreenResourceString \
2489 XScreenNumberOfScreen)
2492 if test "${window_system}" = "x11"; then
2493 AC_MSG_CHECKING(X11 version 6)
2494 AC_CACHE_VAL(emacs_cv_x11_version_6,
2495 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]],
2496 [[#if XlibSpecificationRelease < 6
2499 ]])], emacs_cv_x11_version_6=yes, emacs_cv_x11_version_6=no)])
2500 if test $emacs_cv_x11_version_6 = yes; then
2501 AC_MSG_RESULT(6 or newer)
2502 AC_DEFINE(HAVE_X11R6, 1,
2503 [Define to 1 if you have the X11R6 or newer version of Xlib.])
2504 AC_DEFINE(HAVE_X_I18N, 1, [Define if you have usable i18n support.])
2505 ## inoue@ainet.or.jp says Solaris has a bug related to X11R6-style
2509 *) AC_DEFINE(HAVE_X11R6_XIM, 1,
2510 [Define if you have usable X11R6-style XIM support.])
2514 AC_MSG_RESULT(before 6)
2519 ### Use -lrsvg-2 if available, unless '--with-rsvg=no' is specified.
2521 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${opsys}" = "mingw32"; then
2522 if test "${with_rsvg}" != "no"; then
2523 RSVG_REQUIRED=2.11.0
2524 RSVG_MODULE="librsvg-2.0 >= $RSVG_REQUIRED"
2526 EMACS_CHECK_MODULES([RSVG], [$RSVG_MODULE])
2527 AC_SUBST(RSVG_CFLAGS)
2530 if test $HAVE_RSVG = yes; then
2531 AC_DEFINE(HAVE_RSVG, 1, [Define to 1 if using librsvg.])
2532 CFLAGS="$CFLAGS $RSVG_CFLAGS"
2533 # Windows loads librsvg dynamically
2534 if test "${opsys}" = "mingw32"; then
2542 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${HAVE_W32}" = "yes"; then
2543 if test "${with_imagemagick}" != "no"; then
2544 if test -n "$BREW"; then
2545 # Homebrew doesn't link ImageMagick 6 by default, so make sure
2546 # pkgconfig can find it.
2547 export PKG_CONFIG_PATH="$PKG_CONFIG_PATH$PATH_SEPARATOR`$BREW --prefix imagemagick@6 2>/dev/null`/lib/pkgconfig"
2550 ## 6.3.5 is the earliest version known to work; see Bug#17339.
2551 ## 6.8.2 makes Emacs crash; see Bug#13867.
2552 ## 7 and later have not been ported to; See Bug#25967.
2553 IMAGEMAGICK_MODULE="Wand >= 6.3.5 Wand != 6.8.2 Wand < 7"
2554 EMACS_CHECK_MODULES([IMAGEMAGICK], [$IMAGEMAGICK_MODULE])
2556 if test $HAVE_IMAGEMAGICK = yes; then
2559 CFLAGS="$CFLAGS $IMAGEMAGICK_CFLAGS"
2560 LIBS="$IMAGEMAGICK_LIBS $LIBS"
2561 AC_CHECK_FUNCS([MagickRelinquishMemory MagickExportImagePixels \
2562 MagickMergeImageLayers MagickAutoOrientImage])
2565 # Check that ImageMagick links. It does not link on Fedora 25
2566 # with './configure CC=clang', as pkg-config outputs flags like
2567 # -lomp that work for GCC but not Clang.
2568 if test "$ac_cv_func_MagickRelinquishMemory" != yes; then
2572 if test $HAVE_IMAGEMAGICK = yes; then
2573 AC_DEFINE([HAVE_IMAGEMAGICK], 1, [Define to 1 if using ImageMagick.])
2578 AC_SUBST([IMAGEMAGICK_CFLAGS])
2579 AC_SUBST([IMAGEMAGICK_LIBS])
2583 AC_CHECK_LIB(anl, getaddrinfo_a, HAVE_GETADDRINFO_A=yes)
2584 if test "${HAVE_GETADDRINFO_A}" = "yes"; then
2585 AC_DEFINE(HAVE_GETADDRINFO_A, 1,
2586 [Define to 1 if you have getaddrinfo_a for asynchronous DNS resolution.])
2587 GETADDRINFO_A_LIBS="-lanl"
2588 AC_SUBST(GETADDRINFO_A_LIBS)
2593 gtk_term_header=$term_header
2596 if test "${opsys}" != "mingw32"; then
2597 if test "${with_gtk3}" = "yes" || test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
2600 GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2602 dnl Checks for libraries.
2603 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2604 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2605 if test "$pkg_check_gtk" = "no" && test "$with_gtk3" = "yes"; then
2606 AC_MSG_ERROR($GTK_PKG_ERRORS)
2608 if test "$pkg_check_gtk" = "yes"; then
2609 AC_DEFINE(HAVE_GTK3, 1, [Define to 1 if using GTK 3 or later.])
2610 GTK_OBJ=emacsgtkfixed.o
2611 gtk_term_header=gtkutil.h
2612 USE_GTK_TOOLKIT="GTK3"
2613 if test "x$ac_enable_gtk_deprecation_warnings" = x; then
2614 AC_DEFINE([GDK_DISABLE_DEPRECATION_WARNINGS], [1],
2615 [Define to 1 to disable GTK+/GDK deprecation warnings.])
2616 AC_DEFINE([GLIB_DISABLE_DEPRECATION_WARNINGS], [1],
2617 [Define to 1 to disable Glib deprecation warnings.])
2621 gtk3_pkg_errors="$GTK_PKG_ERRORS "
2625 if test "${with_gtk2}" = "yes" || test "$check_gtk2" = "yes"; then
2628 GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2630 dnl Checks for libraries.
2631 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2632 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2633 if test "$pkg_check_gtk" = "no" &&
2634 { test "$with_gtk" = yes || test "$with_gtk2" = "yes"; }
2636 AC_MSG_ERROR($gtk3_pkg_errors$GTK_PKG_ERRORS)
2638 test "$pkg_check_gtk" = "yes" && USE_GTK_TOOLKIT="GTK2"
2645 if test x"$pkg_check_gtk" = xyes; then
2648 CFLAGS="$CFLAGS $GTK_CFLAGS"
2649 LIBS="$GTK_LIBS $LIBS"
2650 dnl Try to compile a simple GTK program.
2651 AC_CACHE_CHECK([whether GTK compiles], [emacs_cv_gtk_compiles],
2654 [[/* Check the Gtk and Glib APIs. */
2655 #include <gtk/gtk.h>
2656 #include <glib-object.h>
2658 callback (GObject *go, GParamSpec *spec, gpointer user_data)
2662 GtkSettings *gs = 0;
2663 /* Use G_CALLBACK to make sure function pointers can be cast to void *;
2664 strict C prohibits this. Use gtk_main_iteration to test that the
2665 libraries are there. */
2666 if (g_signal_handler_find (G_OBJECT (gs), G_SIGNAL_MATCH_FUNC,
2667 0, 0, 0, G_CALLBACK (callback), 0))
2668 gtk_main_iteration ();
2670 [emacs_cv_gtk_compiles=yes], [emacs_cv_gtk_compiles=no])])
2671 if test "${emacs_cv_gtk_compiles}" != "yes"; then
2673 if test "$USE_X_TOOLKIT" != "maybe"; then
2674 AC_MSG_ERROR([Gtk+ wanted, but it does not compile, see config.log. Maybe some x11-devel files missing?]);
2677 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $GTK_CFLAGS"
2679 AC_DEFINE(USE_GTK, 1, [Define to 1 if using GTK.])
2680 GTK_OBJ="gtkutil.o $GTK_OBJ"
2681 term_header=$gtk_term_header
2683 AC_MSG_WARN([[Your version of Gtk+ will have problems with
2684 closing open displays. This is no problem if you just use
2685 one display, but if you use more than one and close one of them
2687 See https://gitlab.gnome.org/GNOME/gtk/issues/221]])
2694 if test "${HAVE_GTK}" = "yes"; then
2696 dnl GTK scrollbars resemble toolkit scrollbars a lot, so to avoid
2697 dnl a lot if #ifdef:s, say we have toolkit scrollbars.
2698 if test "$with_toolkit_scroll_bars" != no; then
2699 with_toolkit_scroll_bars=yes
2702 dnl Check if we have the old file selection dialog declared and
2703 dnl in the link library. In 2.x it may be in the library,
2704 dnl but not declared if deprecated featured has been selected out.
2705 dnl AC_CHECK_DECL checks for a macro, so check for GTK_TYPE_FILE_SELECTION.
2706 HAVE_GTK_FILE_SELECTION=no
2707 AC_CHECK_DECL(GTK_TYPE_FILE_SELECTION, HAVE_GTK_FILE_SELECTION=yes,
2708 HAVE_GTK_FILE_SELECTION=no, [AC_INCLUDES_DEFAULT
2709 #include <gtk/gtk.h>])
2710 if test "$HAVE_GTK_FILE_SELECTION" = yes; then
2711 AC_CHECK_FUNCS(gtk_file_selection_new)
2714 dnl Same as above for gtk_handle_box.
2715 HAVE_GTK_HANDLE_BOX=no
2716 AC_CHECK_DECL(GTK_TYPE_HANDLE_BOX, HAVE_GTK_HANDLE_BOX=yes,
2717 HAVE_GTK_HANDLE_BOX=no, [AC_INCLUDES_DEFAULT
2718 #include <gtk/gtk.h>])
2719 if test "$HAVE_GTK_HANDLE_BOX" = yes; then
2720 AC_CHECK_FUNCS(gtk_handle_box_new)
2723 dnl Same as above for gtk_tearoff_menu_item.
2724 HAVE_GTK_TEAROFF_MENU_ITEM=no
2725 AC_CHECK_DECL(GTK_TYPE_TEAROFF_MENU_ITEM, HAVE_GTK_TEAROFF_MENU_ITEM=yes,
2726 HAVE_GTK_TEAROFF_MENU_ITEM=no, [AC_INCLUDES_DEFAULT
2727 #include <gtk/gtk.h>])
2728 if test "$HAVE_GTK_TEAROFF_MENU_ITEM" = yes; then
2729 AC_CHECK_FUNCS(gtk_tearoff_menu_item_new)
2732 dnl Check for functions introduced in 2.14 and later.
2733 AC_CHECK_FUNCS(gtk_widget_get_window gtk_widget_set_has_window \
2734 gtk_dialog_get_action_area gtk_widget_get_sensitive \
2735 gtk_widget_get_mapped gtk_adjustment_get_page_size \
2736 gtk_orientable_set_orientation \
2737 gtk_window_set_has_resize_grip)
2739 term_header=gtkutil.h
2743 dnl Enable xwidgets if GTK3 and WebKitGTK+ are available.
2746 if test "$with_xwidgets" != "no"; then
2747 test "$USE_GTK_TOOLKIT" = "GTK3" && test "$window_system" != "none" ||
2748 AC_MSG_ERROR([xwidgets requested but gtk3 not used.])
2750 WEBKIT_REQUIRED=2.12
2751 WEBKIT_MODULES="webkit2gtk-4.0 >= $WEBKIT_REQUIRED"
2752 EMACS_CHECK_MODULES([WEBKIT], [$WEBKIT_MODULES])
2753 HAVE_XWIDGETS=$HAVE_WEBKIT
2754 test $HAVE_XWIDGETS = yes ||
2755 AC_MSG_ERROR([xwidgets requested but WebKitGTK+ not found.])
2757 XWIDGETS_OBJ=xwidget.o
2758 AC_DEFINE([HAVE_XWIDGETS], 1, [Define to 1 if you have xwidgets support.])
2760 AC_SUBST(XWIDGETS_OBJ)
2765 dnl D-Bus has been tested under GNU/Linux only. Must be adapted for
2766 dnl other platforms.
2769 if test "${with_dbus}" = "yes"; then
2770 EMACS_CHECK_MODULES([DBUS], [dbus-1 >= 1.0])
2771 if test "$HAVE_DBUS" = yes; then
2772 AC_DEFINE(HAVE_DBUS, 1, [Define to 1 if using D-Bus.])
2773 dnl dbus_watch_get_unix_fd has been introduced in D-Bus 1.1.1.
2774 dnl dbus_type_is_valid and dbus_validate_* have been introduced in
2777 LIBS="$LIBS $DBUS_LIBS"
2778 AC_CHECK_FUNCS(dbus_watch_get_unix_fd \
2779 dbus_type_is_valid \
2780 dbus_validate_bus_name \
2781 dbus_validate_path \
2782 dbus_validate_interface \
2783 dbus_validate_member)
2788 AC_SUBST(DBUS_CFLAGS)
2792 dnl GSettings has been tested under GNU/Linux only.
2794 if test "${HAVE_X11}" = "yes" && test "${with_gsettings}" = "yes"; then
2795 EMACS_CHECK_MODULES([GSETTINGS], [gio-2.0 >= 2.26])
2796 if test "$HAVE_GSETTINGS" = "yes"; then
2798 CFLAGS="$CFLAGS $GSETTINGS_CFLAGS"
2800 LIBS="$LIBS $GSETTINGS_LIBS"
2801 AC_CACHE_CHECK([whether GSettings is in gio], [emacs_cv_gsettings_in_gio],
2804 [[/* Check that gsettings really is present. */
2805 #include <glib-object.h>
2806 #include <gio/gio.h>
2809 GSettings *settings;
2810 GVariant *val = g_settings_get_value (settings, "");
2812 [emacs_cv_gsettings_in_gio=yes], [emacs_cv_gsettings_in_gio=no])])
2814 if test "$emacs_cv_gsettings_in_gio" = "yes"; then
2815 AC_DEFINE(HAVE_GSETTINGS, 1, [Define to 1 if using GSettings.])
2816 SETTINGS_CFLAGS="$GSETTINGS_CFLAGS"
2817 SETTINGS_LIBS="$GSETTINGS_LIBS"
2818 test "$with_gconf" = "yes" || with_gconf=no
2825 dnl GConf has been tested under GNU/Linux only.
2826 dnl The version is really arbitrary, it is about the same age as Gtk+ 2.6.
2828 if test "${HAVE_X11}" = "yes" && test "${with_gconf}" != "no"; then
2829 EMACS_CHECK_MODULES([GCONF], [gconf-2.0 >= 2.13])
2830 if test "$HAVE_GCONF" = yes; then
2831 AC_DEFINE(HAVE_GCONF, 1, [Define to 1 if using GConf.])
2832 dnl Newer GConf doesn't link with g_objects, so this is not defined.
2833 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GCONF_CFLAGS"
2834 SETTINGS_LIBS="$SETTINGS_LIBS $GCONF_LIBS"
2838 if test "$HAVE_GSETTINGS" = "yes" || test "$HAVE_GCONF" = "yes"; then
2839 EMACS_CHECK_MODULES([GOBJECT], [gobject-2.0 >= 2.0])
2840 if test "$HAVE_GOBJECT" = "yes"; then
2841 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GOBJECT_CFLAGS"
2842 SETTINGS_LIBS="$SETTINGS_LIBS $GOBJECT_LIBS"
2844 SAVE_CFLAGS="$CFLAGS"
2846 CFLAGS="$SETTINGS_CFLAGS $CFLAGS"
2847 LIBS="$SETTINGS_LIBS $LIBS"
2848 CFLAGS="$SAVE_CFLAGS"
2851 AC_SUBST(SETTINGS_CFLAGS)
2852 AC_SUBST(SETTINGS_LIBS)
2855 dnl SELinux is available for GNU/Linux only.
2858 if test "${with_selinux}" = "yes"; then
2859 AC_CHECK_LIB([selinux], [lgetfilecon], HAVE_LIBSELINUX=yes, HAVE_LIBSELINUX=no)
2860 if test "$HAVE_LIBSELINUX" = yes; then
2861 AC_DEFINE(HAVE_LIBSELINUX, 1, [Define to 1 if using SELinux.])
2862 LIBSELINUX_LIBS=-lselinux
2865 AC_SUBST(LIBSELINUX_LIBS)
2868 if test "${with_gnutls}" = "yes" ; then
2869 EMACS_CHECK_MODULES([LIBGNUTLS], [gnutls >= 2.12.2],
2870 [HAVE_GNUTLS=yes], [HAVE_GNUTLS=no])
2871 if test "${HAVE_GNUTLS}" = "yes"; then
2872 AC_DEFINE(HAVE_GNUTLS, 1, [Define if using GnuTLS.])
2875 # Windows loads GnuTLS dynamically
2876 if test "${opsys}" = "mingw32"; then
2881 AC_SUBST(LIBGNUTLS_LIBS)
2882 AC_SUBST(LIBGNUTLS_CFLAGS)
2885 if test "${with_libsystemd}" = "yes" ; then
2886 dnl This code has been tested with libsystemd 222 and later.
2887 dnl FIXME: Find the earliest version number for which Emacs should work,
2888 dnl and change '222' to that number.
2889 EMACS_CHECK_MODULES([LIBSYSTEMD], [libsystemd >= 222],
2890 [HAVE_LIBSYSTEMD=yes], [HAVE_LIBSYSTEMD=no])
2891 if test "${HAVE_LIBSYSTEMD}" = "yes"; then
2892 AC_DEFINE(HAVE_LIBSYSTEMD, 1, [Define if using libsystemd.])
2896 AC_SUBST(LIBSYSTEMD_LIBS)
2897 AC_SUBST(LIBSYSTEMD_CFLAGS)
2902 if test "${with_json}" = yes; then
2903 EMACS_CHECK_MODULES([JSON], [jansson >= 2.7],
2904 [HAVE_JSON=yes], [HAVE_JSON=no])
2905 if test "${HAVE_JSON}" = yes; then
2906 AC_DEFINE(HAVE_JSON, 1, [Define if using Jansson.])
2910 # Windows loads libjansson dynamically
2911 if test "${opsys}" = "mingw32"; then
2917 AC_SUBST(JSON_CFLAGS)
2923 dnl MS Windows native file monitor is available for mingw32 only.
2924 case $with_file_notification,$opsys in
2926 AC_MSG_ERROR(['--with-file-notification=w32' was specified, but
2927 this is only supported on MS-Windows native and MinGW32 builds.
2928 Consider using gfile instead.])
2930 w32,* | yes,mingw32)
2931 AC_CHECK_HEADER(windows.h)
2932 if test "$ac_cv_header_windows_h" = yes ; then
2933 AC_DEFINE(HAVE_W32NOTIFY, 1, [Define to 1 to use w32notify.])
2934 NOTIFY_OBJ=w32notify.o
2935 NOTIFY_SUMMARY="yes (w32)"
2939 dnl inotify is available only on GNU/Linux.
2940 case $with_file_notification,$NOTIFY_OBJ in
2942 AC_CHECK_HEADER(sys/inotify.h)
2943 if test "$ac_cv_header_sys_inotify_h" = yes ; then
2944 AC_CHECK_FUNC(inotify_init1)
2945 if test "$ac_cv_func_inotify_init1" = yes; then
2946 AC_DEFINE(HAVE_INOTIFY, 1, [Define to 1 to use inotify.])
2947 NOTIFY_OBJ=inotify.o
2948 NOTIFY_SUMMARY="yes -lglibc (inotify)"
2953 dnl kqueue is available on BSD-like systems.
2954 case $with_file_notification,$NOTIFY_OBJ in
2956 EMACS_CHECK_MODULES([KQUEUE], [libkqueue])
2957 if test "$HAVE_KQUEUE" = "yes"; then
2958 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2959 CPPFLAGS="$CPPFLAGS -I/usr/include/kqueue"
2960 NOTIFY_CFLAGS=$KQUEUE_CFLAGS
2961 NOTIFY_LIBS=$KQUEUE_LIBS
2963 NOTIFY_SUMMARY="yes -lkqueue"
2965 AC_SEARCH_LIBS(kqueue, [])
2966 if test "$ac_cv_search_kqueue" != no; then
2967 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2969 NOTIFY_SUMMARY="yes (kqueue)"
2974 dnl g_file_monitor exists since glib 2.18. G_FILE_MONITOR_EVENT_MOVED
2975 dnl has been added in glib 2.24. It has been tested under
2977 case $with_file_notification,$NOTIFY_OBJ in
2979 if test "${HAVE_NS}" = yes; then
2980 AC_MSG_ERROR(['--with-file-notification=gfile' is not supported in NextStep builds.
2981 Consider kqueue instead.])
2983 EMACS_CHECK_MODULES([GFILENOTIFY], [gio-2.0 >= 2.24])
2984 if test "$HAVE_GFILENOTIFY" = "yes"; then
2985 AC_DEFINE(HAVE_GFILENOTIFY, 1, [Define to 1 if using GFile.])
2986 NOTIFY_CFLAGS=$GFILENOTIFY_CFLAGS
2987 NOTIFY_LIBS=$GFILENOTIFY_LIBS
2988 NOTIFY_OBJ=gfilenotify.o
2989 NOTIFY_SUMMARY="yes -lgio (gfile)"
2994 case $with_file_notification,$NOTIFY_OBJ in
2995 yes,* | no,* | *,?*) ;;
2996 *) AC_MSG_ERROR([File notification '$with_file_notification' requested but requirements not found.]) ;;
2999 if test -n "$NOTIFY_OBJ"; then
3000 AC_DEFINE(USE_FILE_NOTIFY, 1, [Define to 1 if using file notifications.])
3002 AC_SUBST(NOTIFY_CFLAGS)
3003 AC_SUBST(NOTIFY_LIBS)
3004 AC_SUBST(NOTIFY_OBJ)
3006 dnl Do not put whitespace before the #include statements below.
3007 dnl Older compilers (eg sunos4 cc) choke on it.
3010 if test x"${USE_X_TOOLKIT}" = xmaybe || test x"${USE_X_TOOLKIT}" = xLUCID; then
3011 if test "$with_xaw3d" != no; then
3012 AC_CACHE_VAL(emacs_cv_xaw3d,
3013 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
3014 #include <X11/Intrinsic.h>
3015 #include <X11/Xaw3d/Simple.h>]],
3017 [AC_CHECK_LIB(Xaw3d, XawScrollbarSetThumb,
3018 emacs_cv_xaw3d=yes, emacs_cv_xaw3d=no)],
3019 emacs_cv_xaw3d=no)])
3023 if test $emacs_cv_xaw3d = yes; then
3024 AC_MSG_CHECKING(for xaw3d)
3025 AC_MSG_RESULT([yes; using Lucid toolkit])
3029 AC_DEFINE(HAVE_XAW3D, 1,
3030 [Define to 1 if you have the Xaw3d library (-lXaw3d).])
3032 AC_MSG_CHECKING(for xaw3d)
3034 AC_MSG_CHECKING(for libXaw)
3035 AC_CACHE_VAL(emacs_cv_xaw,
3036 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
3037 #include <X11/Intrinsic.h>
3038 #include <X11/Xaw/Simple.h>]],
3042 if test $emacs_cv_xaw = yes; then
3043 AC_MSG_RESULT([yes; using Lucid toolkit])
3046 elif test x"${USE_X_TOOLKIT}" = xLUCID; then
3047 AC_MSG_ERROR([Lucid toolkit requires X11/Xaw include files])
3049 AC_MSG_ERROR([No X toolkit could be found.
3050 If you are sure you want Emacs compiled without an X toolkit, pass
3052 to configure. Otherwise, install the development libraries for the toolkit
3053 that you want to use (e.g. Gtk+) and re-run configure.])
3058 X_TOOLKIT_TYPE=$USE_X_TOOLKIT
3062 if test "${USE_X_TOOLKIT}" != "none"; then
3063 AC_MSG_CHECKING(X11 toolkit version)
3064 AC_CACHE_VAL(emacs_cv_x11_toolkit_version_6,
3065 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Intrinsic.h>]],
3066 [[#if XtSpecificationRelease < 6
3069 ]])], emacs_cv_x11_toolkit_version_6=yes, emacs_cv_x11_toolkit_version_6=no)])
3070 HAVE_X11XTR6=$emacs_cv_x11_toolkit_version_6
3071 if test $emacs_cv_x11_toolkit_version_6 = yes; then
3072 AC_MSG_RESULT(6 or newer)
3073 AC_DEFINE(HAVE_X11XTR6, 1,
3074 [Define to 1 if you have the X11R6 or newer version of Xt.])
3075 LIBXTR6="-lSM -lICE"
3077 ## Use libw.a along with X11R6 Xt.
3078 unixware) LIBXTR6="$LIBXTR6 -lw" ;;
3081 AC_MSG_RESULT(before 6)
3084 dnl If using toolkit, check whether libXmu.a exists.
3085 dnl tranle@intellicorp.com says libXmu.a can need XtMalloc in libXt.a to link.
3087 if test x$HAVE_X11XTR6 = xyes; then
3088 OTHERLIBS='-lXt -lSM -lICE'
3092 AC_SEARCH_LIBS([XmuConvertStandardSelection], [Xmu], [], [], [$OTHERLIBS])
3093 if test "X$LIBS" != "X$OLDLIBS"; then
3094 LIBXMU=$ac_cv_search_XmuConvertStandardSelection
3097 dnl ac_cv_search_XmuConvertStandardSelection is also referenced below.
3103 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3104 # OpenMotif may be installed in such a way on some GNU/Linux systems.
3105 if test -d /usr/include/openmotif; then
3106 CPPFLAGS="-I/usr/include/openmotif $CPPFLAGS"
3107 emacs_cv_openmotif=yes
3108 case "$canonical" in
3109 x86_64-*-linux-gnu* | powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*)
3110 test -d /usr/lib64/openmotif && LDFLAGS="-L/usr/lib64/openmotif $LDFLAGS"
3113 test -d /usr/lib/openmotif && LDFLAGS="-L/usr/lib/openmotif $LDFLAGS"
3116 emacs_cv_openmotif=no
3118 AC_CACHE_CHECK(for (Open)Motif version 2.1, emacs_cv_motif_version_2_1,
3119 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <Xm/Xm.h>]],
3120 [[#if XmVERSION > 2 || (XmVERSION == 2 && XmREVISION >= 1)
3123 Motif version prior to 2.1.
3125 emacs_cv_motif_version_2_1=yes, emacs_cv_motif_version_2_1=no)])
3126 if test $emacs_cv_motif_version_2_1 = yes; then
3127 AC_CHECK_LIB(Xp, XpCreateContext, LIBXP=-lXp)
3128 if test x$emacs_cv_openmotif = xyes; then
3129 REAL_CPPFLAGS="-I/usr/include/openmotif $REAL_CPPFLAGS"
3132 AC_CACHE_CHECK(for LessTif where some systems put it, emacs_cv_lesstif,
3133 # We put this in CFLAGS temporarily to precede other -I options
3134 # that might be in CFLAGS temporarily.
3135 # We put this in CPPFLAGS where it precedes the other -I options.
3136 OLD_CPPFLAGS=$CPPFLAGS
3138 CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CPPFLAGS"
3139 CFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CFLAGS"
3140 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include </usr/X11R6/LessTif/Motif1.2/include/Xm/Xm.h>]],
3142 emacs_cv_lesstif=yes, emacs_cv_lesstif=no)])
3143 if test $emacs_cv_lesstif = yes; then
3144 # Make sure this -I option remains in CPPFLAGS after it is set
3145 # back to REAL_CPPFLAGS.
3146 # There is no need to change REAL_CFLAGS, because REAL_CFLAGS does not
3147 # have those other -I options anyway. Ultimately, having this
3148 # directory ultimately in CPPFLAGS will be enough.
3149 REAL_CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $REAL_CPPFLAGS"
3150 LDFLAGS="-L/usr/X11R6/LessTif/Motif1.2/lib $LDFLAGS"
3153 CPPFLAGS=$OLD_CPPFLAGS
3156 AC_CHECK_HEADER([Xm/BulletinB.h], [],
3157 [AC_MSG_ERROR([Motif toolkit requested but requirements not found.])])
3160 dnl Use toolkit scroll bars if configured for GTK or X toolkit and either
3161 dnl using Motif or Xaw3d is available, and unless
3162 dnl --with-toolkit-scroll-bars=no was specified.
3164 AH_TEMPLATE(USE_TOOLKIT_SCROLL_BARS,
3165 [Define to 1 if we should use toolkit scroll bars.])dnl
3166 USE_TOOLKIT_SCROLL_BARS=no
3167 if test "${with_toolkit_scroll_bars}" != "no"; then
3168 if test "${USE_X_TOOLKIT}" != "none"; then
3169 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3170 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3172 USE_TOOLKIT_SCROLL_BARS=yes
3173 elif test "${HAVE_XAW3D}" = "yes" || test "${USE_X_TOOLKIT}" = "LUCID"; then
3174 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3175 USE_TOOLKIT_SCROLL_BARS=yes
3177 elif test "${HAVE_GTK}" = "yes"; then
3178 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3179 USE_TOOLKIT_SCROLL_BARS=yes
3180 elif test "${HAVE_NS}" = "yes"; then
3181 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3182 USE_TOOLKIT_SCROLL_BARS=yes
3183 elif test "${HAVE_W32}" = "yes"; then
3184 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3185 USE_TOOLKIT_SCROLL_BARS=yes
3189 dnl See if XIM is available.
3190 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3191 #include <X11/Xlib.h>
3192 #include <X11/Xresource.h>]],
3193 [[XIMProc callback;]])],
3195 AC_DEFINE(HAVE_XIM, 1, [Define to 1 if XIM is available])],
3198 dnl '--with-xim' now controls only the initial value of use_xim at run time.
3200 if test "${with_xim}" != "no"; then
3201 AC_DEFINE(USE_XIM, 1,
3202 [Define to 1 if we should use XIM, if it is available.])
3206 if test "${HAVE_XIM}" != "no"; then
3208 if test "$GCC" = yes; then
3209 CFLAGS="$CFLAGS --pedantic-errors"
3211 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3212 #include <X11/Xlib.h>
3213 #include <X11/Xresource.h>]],
3219 XPointer *client_data;
3221 /* If we're not using GCC, it's probably not XFree86, and this is
3222 probably right, but we can't use something like --pedantic-errors. */
3223 extern Bool XRegisterIMInstantiateCallback(Display*, XrmDatabase, char*,
3224 char*, XIMProc, XPointer*);
3226 (void)XRegisterIMInstantiateCallback(display, db, res_name, res_class, callback,
3228 [emacs_cv_arg6_star=yes])
3229 AH_TEMPLATE(XRegisterIMInstantiateCallback_arg6,
3230 [Define to the type of the 6th arg of XRegisterIMInstantiateCallback,
3231 either XPointer or XPointer*.])dnl
3232 if test "$emacs_cv_arg6_star" = yes; then
3233 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer*])
3235 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer])
3240 ### Start of font-backend (under any platform) section.
3241 # (nothing here yet -- this is a placeholder)
3242 ### End of font-backend (under any platform) section.
3244 ### Start of font-backend (under X11) section.
3245 if test "${HAVE_X11}" = "yes"; then
3246 ## Use -lXft if available, unless '--with-xft=no'.
3248 if test "x${with_x}" = "xno"; then
3252 if test "$with_xft" != no; then
3253 EMACS_CHECK_MODULES([FONTCONFIG], [fontconfig >= 2.2.0])
3254 with_xft=$HAVE_FONTCONFIG
3257 if test "x${with_xft}" != "xno"; then
3259 EMACS_CHECK_MODULES([XFT], [xft >= 0.13.0], [], [HAVE_XFT=no])
3260 ## Because xftfont.c uses XRenderQueryExtension, we also
3261 ## need to link to -lXrender.
3263 AC_CHECK_LIB(Xrender, XRenderQueryExtension, HAVE_XRENDER=yes)
3264 if test "$HAVE_XFT" != no && test "$HAVE_XRENDER" != no; then
3265 OLD_CPPFLAGS="$CPPFLAGS"
3266 OLD_CFLAGS="$CFLAGS"
3268 CPPFLAGS="$CPPFLAGS $XFT_CFLAGS"
3269 CFLAGS="$CFLAGS $XFT_CFLAGS"
3270 XFT_LIBS="-lXrender $XFT_LIBS"
3271 LIBS="$XFT_LIBS $LIBS"
3272 AC_CHECK_HEADER(X11/Xft/Xft.h,
3273 AC_CHECK_LIB(Xft, XftFontOpen, HAVE_XFT=yes, , $XFT_LIBS) , ,
3274 [[#include <X11/X.h>]])
3276 if test "${HAVE_XFT}" = "yes"; then
3277 AC_DEFINE(HAVE_XFT, 1, [Define to 1 if you have the Xft library.])
3279 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $XFT_CFLAGS"
3280 fi # "${HAVE_XFT}" = "yes"
3281 CPPFLAGS=$OLD_CPPFLAGS
3284 fi # "$HAVE_XFT" != no
3285 fi # "x${with_xft}" != "xno"
3287 ## We used to allow building with FreeType and without Xft.
3288 ## However, the ftx font backend driver is not in good shape.
3289 if test "$HAVE_XFT" != "yes"; then
3290 dnl For the "Does Emacs use" message at the end.
3294 dnl Strict linkers fail with
3295 dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
3296 dnl if -lfreetype is not specified.
3297 dnl The following is needed to set FREETYPE_LIBS.
3298 EMACS_CHECK_MODULES([FREETYPE], [freetype2])
3300 test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(libxft requires libfreetype)
3304 if test "${HAVE_FREETYPE}" = "yes"; then
3305 AC_DEFINE(HAVE_FREETYPE, 1,
3306 [Define to 1 if using the freetype and fontconfig libraries.])
3307 if test "${with_libotf}" != "no"; then
3308 EMACS_CHECK_MODULES([LIBOTF], [libotf])
3309 if test "$HAVE_LIBOTF" = "yes"; then
3310 AC_DEFINE(HAVE_LIBOTF, 1, [Define to 1 if using libotf.])
3311 AC_CHECK_LIB(otf, OTF_get_variation_glyphs,
3312 HAVE_OTF_GET_VARIATION_GLYPHS=yes,
3313 HAVE_OTF_GET_VARIATION_GLYPHS=no)
3314 if test "${HAVE_OTF_GET_VARIATION_GLYPHS}" = "yes"; then
3315 AC_DEFINE(HAVE_OTF_GET_VARIATION_GLYPHS, 1,
3316 [Define to 1 if libotf has OTF_get_variation_glyphs.])
3318 if ! $PKG_CONFIG --atleast-version=0.9.16 libotf; then
3319 AC_DEFINE(HAVE_OTF_KANNADA_BUG, 1,
3320 [Define to 1 if libotf is affected by https://debbugs.gnu.org/28110.])
3324 dnl FIXME should there be an error if HAVE_FREETYPE != yes?
3325 dnl Does the new font backend require it, or can it work without it?
3329 if test "${HAVE_LIBOTF}" = yes; then
3330 if test "${with_m17n_flt}" != "no"; then
3331 EMACS_CHECK_MODULES([M17N_FLT], [m17n-flt])
3332 if test "$HAVE_M17N_FLT" = "yes"; then
3333 AC_DEFINE(HAVE_M17N_FLT, 1, [Define to 1 if using libm17n-flt.])
3344 ### End of font-backend (under X11) section.
3346 AC_SUBST(FREETYPE_CFLAGS)
3347 AC_SUBST(FREETYPE_LIBS)
3348 AC_SUBST(FONTCONFIG_CFLAGS)
3349 AC_SUBST(FONTCONFIG_LIBS)
3350 AC_SUBST(LIBOTF_CFLAGS)
3351 AC_SUBST(LIBOTF_LIBS)
3352 AC_SUBST(M17N_FLT_CFLAGS)
3353 AC_SUBST(M17N_FLT_LIBS)
3356 if test "${HAVE_X11}" = "yes"; then
3357 if test "${with_cairo}" != "no"; then
3358 CAIRO_REQUIRED=1.12.0
3359 CAIRO_MODULE="cairo >= $CAIRO_REQUIRED"
3360 EMACS_CHECK_MODULES(CAIRO, $CAIRO_MODULE)
3361 if test $HAVE_CAIRO = yes; then
3362 AC_DEFINE(USE_CAIRO, 1, [Define to 1 if using cairo.])
3364 AC_MSG_ERROR([cairo requested but not found.])
3367 CFLAGS="$CFLAGS $CAIRO_CFLAGS"
3368 LIBS="$LIBS $CAIRO_LIBS"
3369 AC_SUBST(CAIRO_CFLAGS)
3370 AC_SUBST(CAIRO_LIBS)
3374 if test "${HAVE_X11}" = "yes"; then
3375 AC_CHECK_HEADER(X11/Xlib-xcb.h,
3376 AC_CHECK_LIB(xcb, xcb_translate_coordinates, HAVE_XCB=yes))
3377 if test "${HAVE_XCB}" = "yes"; then
3378 AC_CHECK_LIB(X11-xcb, XGetXCBConnection, HAVE_X11_XCB=yes)
3379 if test "${HAVE_X11_XCB}" = "yes"; then
3380 AC_DEFINE(USE_XCB, 1,
3381 [Define to 1 if you have the XCB library and X11-XCB library for mixed
3382 X11/XCB programming.])
3383 XCB_LIBS="-lX11-xcb -lxcb"
3389 ### Use -lXpm if available, unless '--with-xpm=no'.
3390 ### mingw32 doesn't use -lXpm, since it loads the library dynamically.
3391 ### The Cygwin-w32 build uses <noX/xpm.h> instead of <X11/xpm.h>, so
3392 ### we need to set LDFLAGS accordingly.
3395 if test "${HAVE_W32}" = "yes" && test "${opsys}" = "cygwin"; then
3396 if test "${with_xpm}" != "no"; then
3397 SAVE_LDFLAGS="$LDFLAGS"
3398 LDFLAGS="$LDFLAGS -L/usr/lib/noX"
3399 AC_CHECK_HEADER(noX/xpm.h,
3400 [AC_CHECK_LIB(Xpm, XpmReadFileToImage, HAVE_XPM=yes)])
3401 if test "${HAVE_XPM}" = "yes"; then
3402 AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
3403 [emacs_cv_cpp_xpm_return_alloc_pixels],
3404 [AC_EGREP_CPP(no_return_alloc_pixels,
3405 [#include "noX/xpm.h"
3406 #ifndef XpmReturnAllocPixels
3407 no_return_alloc_pixels
3409 ], emacs_cv_cpp_xpm_return_alloc_pixels=no,
3410 emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
3412 if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
3414 LDFLAGS="$SAVE_LDFLAGS"
3419 if test "${HAVE_XPM}" = "yes"; then
3420 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3425 if test "${HAVE_X11}" = "yes"; then
3426 dnl Avoid Xpm on AIX unless requested, as it crashes; see Bug#17598.
3427 test "$opsys$with_xpm_set" = aix4-2 && with_xpm=no
3429 if test "${with_xpm}" != "no"; then
3430 AC_CHECK_HEADER(X11/xpm.h,
3431 [AC_CHECK_LIB(Xpm, XpmReadFileToPixmap, HAVE_XPM=yes, , -lX11)])
3432 if test "${HAVE_XPM}" = "yes"; then
3433 AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
3434 [emacs_cv_cpp_xpm_return_alloc_pixels],
3435 [AC_EGREP_CPP(no_return_alloc_pixels,
3436 [#include "X11/xpm.h"
3437 #ifndef XpmReturnAllocPixels
3438 no_return_alloc_pixels
3440 ], emacs_cv_cpp_xpm_return_alloc_pixels=no,
3441 emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
3443 if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
3449 if test "${HAVE_XPM}" = "yes"; then
3450 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3452 elif test "$opsys,$LUCID_LIBW" = aix4-2,-lXaw; then
3453 dnl AIX -lXaw needs -lXpm linked too; see Bug#17598 Message#152.
3458 ### FIXME: Perhaps regroup to minimize code duplication due to MinGW's
3459 ### slightly different requirements wrt image libraries (it doesn't
3460 ### use -lXpm because it loads the xpm shared library dynamically at
3462 if test "${opsys}" = "mingw32"; then
3463 if test "${with_xpm}" != "no"; then
3464 AC_CHECK_HEADER(X11/xpm.h, HAVE_XPM=yes, HAVE_XPM=no, [
3468 if test "${HAVE_XPM}" = "yes"; then
3469 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3475 ### Use -ljpeg if available, unless '--with-jpeg=no'.
3478 if test "${NS_IMPL_COCOA}" = yes; then
3479 : # Cocoa provides its own jpeg support, so do nothing.
3480 elif test "${with_jpeg}" != "no"; then
3481 AC_CACHE_CHECK([for jpeglib 6b or later],
3484 for emacs_cv_jpeglib in yes -ljpeg no; do
3485 case $emacs_cv_jpeglib in
3488 *) LIBS="$LIBS $emacs_cv_jpeglib";;
3492 [[#undef HAVE_STDLIB_H /* Avoid config.h/jpeglib.h collision. */
3493 #include <stdio.h> /* jpeglib.h needs FILE and size_t. */
3494 #include <jpeglib.h>
3496 char verify[JPEG_LIB_VERSION < 62 ? -1 : 1];
3497 struct jpeg_decompress_struct cinfo;
3500 jpeg_create_decompress (&cinfo);
3501 WARNMS (&cinfo, JWRN_JPEG_EOF);
3502 jpeg_destroy_decompress (&cinfo);
3504 [emacs_link_ok=yes],
3507 test $emacs_link_ok = yes && break
3509 if test "$emacs_cv_jpeglib" != no; then
3511 AC_DEFINE([HAVE_JPEG], 1,
3512 [Define to 1 if you have the jpeg library (typically -ljpeg).])
3513 ### mingw32 doesn't use -ljpeg, since it loads the library
3514 ### dynamically when needed, and doesn't want a run-time
3515 ### dependency on the jpeglib DLL.
3516 test "$emacs_cv_jpeglib" != yes && test "${opsys}" != "mingw32" \
3517 && LIBJPEG=$emacs_cv_jpeglib
3525 if test "${with_lcms2}" != "no"; then
3526 EMACS_CHECK_MODULES([LCMS2], [lcms2])
3528 if test "${HAVE_LCMS2}" = "yes"; then
3529 AC_DEFINE([HAVE_LCMS2], 1, [Define to 1 if you have the lcms2 library (-llcms2).])
3530 ### mingw32 doesn't use -llcms2, since it loads the library dynamically.
3531 if test "${opsys}" = "mingw32"; then
3535 AC_SUBST(LCMS2_CFLAGS)
3536 AC_SUBST(LCMS2_LIBS)
3540 if test "${with_zlib}" != "no"; then
3542 AC_SEARCH_LIBS([inflateEnd], [z], [HAVE_ZLIB=yes])
3544 case $ac_cv_search_inflateEnd in
3545 -*) LIBZ=$ac_cv_search_inflateEnd ;;
3548 if test "${HAVE_ZLIB}" = "yes"; then
3549 AC_DEFINE([HAVE_ZLIB], 1, [Define to 1 if you have the zlib library (-lz).])
3550 ### mingw32 doesn't use -lz, since it loads the library dynamically.
3551 if test "${opsys}" = "mingw32"; then
3557 ### Dynamic modules support
3562 cygwin|mingw32) MODULES_SUFFIX=".dll" ;;
3563 *) MODULES_SUFFIX=".so" ;;
3565 if test "${with_modules}" != "no"; then
3571 cygwin|mingw32|darwin)
3575 # BSD systems have dlopen in libc.
3576 AC_CHECK_FUNC([dlopen], [HAVE_MODULES=yes])
3580 if test "${HAVE_MODULES}" = no; then
3581 AC_MSG_ERROR([Dynamic modules are not supported on your system])
3584 LIBS="$LIBS $LIBMODULES"
3585 AC_CHECK_FUNCS([dladdr dlfunc])
3590 if test "${HAVE_MODULES}" = yes; then
3591 MODULES_OBJ="dynlib.o emacs-module.o"
3592 AC_DEFINE(HAVE_MODULES, 1, [Define to 1 if dynamic modules are enabled])
3593 AC_DEFINE_UNQUOTED(MODULES_SUFFIX, "$MODULES_SUFFIX",
3594 [System extension for dynamic libraries])
3596 AC_SUBST(MODULES_OBJ)
3597 AC_SUBST(LIBMODULES)
3598 AC_SUBST(HAVE_MODULES)
3599 AC_SUBST(MODULES_SUFFIX)
3601 AC_CONFIG_FILES([src/emacs-module.h])
3602 AC_SUBST_FILE([module_env_snippet_25])
3603 AC_SUBST_FILE([module_env_snippet_26])
3604 module_env_snippet_25="$srcdir/src/module-env-25.h"
3605 module_env_snippet_26="$srcdir/src/module-env-26.h"
3607 ### Use -lpng if available, unless '--with-png=no'.
3611 if test "${NS_IMPL_COCOA}" = yes; then
3612 : # Cocoa provides its own png support, so do nothing.
3613 elif test "${with_png}" != no; then
3614 # mingw32 loads the library dynamically.
3615 if test "$opsys" = mingw32; then
3616 AC_CHECK_HEADER([png.h], [HAVE_PNG=yes])
3617 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3618 EMACS_CHECK_MODULES([PNG], [libpng >= 1.0.0])
3619 if test $HAVE_PNG = yes; then
3622 # Test old way in case pkg-config doesn't have it (older machines).
3623 AC_MSG_CHECKING([for libpng not configured by pkg-config])
3625 png_cflags=`(libpng-config --cflags) 2>&AS_MESSAGE_LOG_FD` &&
3626 png_ldflags=`(libpng-config --ldflags) 2>&AS_MESSAGE_LOG_FD` || {
3627 # libpng-config does not work; configure by hand.
3628 # Debian unstable as of July 2003 has multiple libpngs, and puts png.h
3629 # in /usr/include/libpng.
3630 if test -r /usr/include/libpng/png.h &&
3631 test ! -r /usr/include/png.h; then
3632 png_cflags=-I/usr/include/libpng
3640 CFLAGS="$CFLAGS $png_cflags"
3641 LIBS="$png_ldflags -lz -lm $LIBS"
3643 [AC_LANG_PROGRAM([[#include <png.h>]],
3644 [[return !png_get_channels (0, 0);]])],
3646 PNG_CFLAGS=`AS_ECHO(["$png_cflags"]) | sed -e "$edit_cflags"`
3647 LIBPNG=$png_ldflags])
3650 AC_MSG_RESULT([$HAVE_PNG])
3653 # $LIBPNG requires explicit -lz in some cases.
3654 # We don't know what those cases are, exactly, so play it safe and
3655 # append -lz to any nonempty $LIBPNG, unless we're already using LIBZ.
3656 case " $LIBPNG ",$LIBZ in
3657 *' -lz '*, | *' ',?*) ;;
3658 *) LIBPNG="$LIBPNG -lz" ;;
3662 if test $HAVE_PNG = yes; then
3663 AC_DEFINE([HAVE_PNG], [1], [Define to 1 if you have the png library.])
3666 CFLAGS="$CFLAGS $PNG_CFLAGS"
3667 AC_CHECK_DECL([png_longjmp],
3669 [AC_DEFINE([PNG_DEPSTRUCT], [],
3670 [Define to empty to suppress deprecation warnings when building
3671 with --enable-gcc-warnings and with libpng versions before 1.5,
3672 which lack png_longjmp.])],
3678 AC_SUBST(PNG_CFLAGS)
3680 ### Use -ltiff if available, unless '--with-tiff=no'.
3681 ### mingw32 doesn't use -ltiff, since it loads the library dynamically.
3684 if test "${opsys}" = "mingw32"; then
3685 if test "${with_tiff}" != "no"; then
3686 AC_CHECK_HEADER(tiffio.h, HAVE_TIFF=yes, HAVE_TIFF=no)
3688 if test "${HAVE_TIFF}" = "yes"; then
3689 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3691 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3692 if test "${with_tiff}" != "no"; then
3693 AC_CHECK_HEADER(tiffio.h,
3695 # At least one tiff package requires the jpeg library.
3696 if test "${HAVE_JPEG}" = yes; then tifflibs="-ljpeg $tifflibs"; fi
3697 AC_CHECK_LIB(tiff, TIFFGetVersion, HAVE_TIFF=yes, , $tifflibs)])
3700 if test "${HAVE_TIFF}" = "yes"; then
3701 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3702 dnl FIXME -lz -lm, as per libpng?
3708 ### Use -lgif or -lungif if available, unless '--with-gif=no'.
3709 ### mingw32 doesn't use -lgif/-lungif, since it loads the library dynamically.
3712 if test "${opsys}" = "mingw32"; then
3713 if test "${with_gif}" != "no"; then
3714 AC_CHECK_HEADER(gif_lib.h, HAVE_GIF=yes, HAVE_GIF=no)
3716 if test "${HAVE_GIF}" = "yes"; then
3717 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3719 elif test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no" \
3720 || test "${HAVE_W32}" = "yes"; then
3721 AC_CHECK_HEADER(gif_lib.h,
3722 # EGifPutExtensionLast only exists from version libungif-4.1.0b1.
3723 # Earlier versions can crash Emacs, but version 5.0 removes EGifPutExtensionLast.
3724 [AC_CHECK_LIB(gif, GifMakeMapObject, HAVE_GIF=yes,
3725 [AC_CHECK_LIB(gif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=maybe)])])
3727 if test "$HAVE_GIF" = yes; then
3729 elif test "$HAVE_GIF" = maybe; then
3730 # If gif_lib.h but no libgif, try libungif.
3731 AC_CHECK_LIB(ungif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=no)
3732 test "$HAVE_GIF" = yes && LIBGIF=-lungif
3735 if test "${HAVE_GIF}" = "yes"; then
3736 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3741 dnl Check for required libraries.
3744 if test "${HAVE_X11}" = "yes"; then
3745 test "${with_xpm}" != "no" && test "${HAVE_XPM}" != "yes" &&
3746 MISSING="libXpm" && WITH_NO="--with-xpm=no"
3747 test "${with_jpeg}" != "no" && test "${HAVE_JPEG}" != "yes" &&
3748 MISSING="$MISSING libjpeg" && WITH_NO="$WITH_NO --with-jpeg=no"
3749 test "${with_png}" != "no" && test "${HAVE_PNG}" != "yes" &&
3750 MISSING="$MISSING libpng" && WITH_NO="$WITH_NO --with-png=no"
3751 test "${with_gif}" != "no" && test "${HAVE_GIF}" != "yes" &&
3752 MISSING="$MISSING libgif/libungif" && WITH_NO="$WITH_NO --with-gif=no"
3753 test "${with_tiff}" != "no" && test "${HAVE_TIFF}" != "yes" &&
3754 MISSING="$MISSING libtiff" && WITH_NO="$WITH_NO --with-tiff=no"
3756 test "${with_gnutls}" != "no" && test "${HAVE_GNUTLS}" != "yes" &&
3757 MISSING="$MISSING gnutls" && WITH_NO="$WITH_NO --with-gnutls=no"
3758 if test "X${MISSING}" != X; then
3759 AC_MSG_ERROR([The following required libraries were not found:
3761 Maybe some development libraries/packages are missing?
3762 If you don't want to link with them give
3764 as options to configure])
3767 ### Use -lgpm if available, unless '--with-gpm=no'.
3770 if test "${with_gpm}" != "no"; then
3771 AC_CHECK_HEADER(gpm.h,
3772 [AC_CHECK_LIB(gpm, Gpm_Open, HAVE_GPM=yes)])
3774 if test "${HAVE_GPM}" = "yes"; then
3775 AC_DEFINE(HAVE_GPM, 1, [Define to 1 if you have the gpm library (-lgpm).])
3781 dnl Check for malloc/malloc.h on darwin
3782 AC_CHECK_HEADERS_ONCE(malloc/malloc.h)
3785 ### Use NeXTstep API to implement GUI.
3786 if test "${HAVE_NS}" = "yes"; then
3787 AC_DEFINE(HAVE_NS, 1, [Define to 1 if you are using the NeXTstep API, either GNUstep or Cocoa on macOS.])
3788 if test "${NS_IMPL_COCOA}" = "yes"; then
3789 AC_DEFINE(NS_IMPL_COCOA, 1, [Define to 1 if you are using NS windowing under macOS.])
3791 if test "${NS_IMPL_GNUSTEP}" = "yes"; then
3792 AC_DEFINE(NS_IMPL_GNUSTEP, 1, [Define to 1 if you are using NS windowing under GNUstep.])
3793 if test $NS_GNUSTEP_CONFIG != yes; then
3794 # See also .m.o rule in src/Makefile.in. */
3795 # FIXME: are all these flags really needed? Document here why. */
3796 GNUSTEP_CFLAGS="-D_REENTRANT -fPIC -fno-strict-aliasing -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
3797 ## Extra CFLAGS applied to src/*.m files.
3798 GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -fgnu-runtime -Wno-import -fconstant-string-class=NSConstantString -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGSWARN -DGSDIAGNOSE"
3804 ### Use session management (-lSM -lICE) if available
3807 if test "${HAVE_X11}" = "yes"; then
3808 AC_CHECK_HEADER(X11/SM/SMlib.h,
3809 [AC_CHECK_LIB(SM, SmcOpenConnection, HAVE_X_SM=yes, , -lICE)])
3811 if test "${HAVE_X_SM}" = "yes"; then
3812 AC_DEFINE(HAVE_X_SM, 1, [Define to 1 if you have the SM library (-lSM).])
3818 ### Use XRandr (-lXrandr) if available
3820 if test "${HAVE_X11}" = "yes"; then
3821 XRANDR_REQUIRED=1.2.2
3822 XRANDR_MODULES="xrandr >= $XRANDR_REQUIRED"
3823 EMACS_CHECK_MODULES([XRANDR], [$XRANDR_MODULES])
3824 if test $HAVE_XRANDR = no; then
3825 # Test old way in case pkg-config doesn't have it (older machines).
3826 # Include Xrender.h by hand to work around bug in older Xrandr.h
3827 # (e.g. RHEL5) and silence (harmless) configure warning (bug#18465).
3828 AC_CHECK_HEADER(X11/extensions/Xrandr.h,
3829 [AC_CHECK_LIB(Xrandr, XRRGetScreenResources, HAVE_XRANDR=yes)],
3830 [], [AC_INCLUDES_DEFAULT
3831 #include <X11/extensions/Xrender.h>])
3832 if test $HAVE_XRANDR = yes; then
3833 XRANDR_LIBS=-lXrandr
3836 if test $HAVE_XRANDR = yes; then
3837 AC_DEFINE(HAVE_XRANDR, 1, [Define to 1 if you have the XRandr extension.])
3840 AC_SUBST(XRANDR_CFLAGS)
3841 AC_SUBST(XRANDR_LIBS)
3843 ### Use Xinerama (-lXinerama) if available
3845 if test "${HAVE_X11}" = "yes"; then
3846 XINERAMA_REQUIRED=1.0.2
3847 XINERAMA_MODULES="xinerama >= $XINERAMA_REQUIRED"
3848 EMACS_CHECK_MODULES([XINERAMA], [$XINERAMA_MODULES])
3849 if test $HAVE_XINERAMA = no; then
3850 # Test old way in case pkg-config doesn't have it (older machines).
3851 AC_CHECK_HEADER(X11/extensions/Xinerama.h,
3852 [AC_CHECK_LIB(Xinerama, XineramaQueryExtension, HAVE_XINERAMA=yes)])
3853 if test $HAVE_XINERAMA = yes; then
3854 XINERAMA_LIBS=-lXinerama
3857 if test $HAVE_XINERAMA = yes; then
3858 AC_DEFINE(HAVE_XINERAMA, 1, [Define to 1 if you have the Xinerama extension.])
3861 AC_SUBST(XINERAMA_CFLAGS)
3862 AC_SUBST(XINERAMA_LIBS)
3864 ### Use Xfixes (-lXfixes) if available
3866 if test "${HAVE_X11}" = "yes"; then
3867 XFIXES_REQUIRED=4.0.0
3868 XFIXES_MODULES="xfixes >= $XFIXES_REQUIRED"
3869 EMACS_CHECK_MODULES([XFIXES], [$XFIXES_MODULES])
3870 if test $HAVE_XFIXES = no; then
3871 # Test old way in case pkg-config doesn't have it (older machines).
3872 AC_CHECK_HEADER(X11/extensions/Xfixes.h,
3873 [AC_CHECK_LIB(Xfixes, XFixesHideCursor, HAVE_XFIXES=yes)])
3874 if test $HAVE_XFIXES = yes; then
3875 XFIXES_LIBS=-lXfixes
3878 if test $HAVE_XFIXES = yes; then
3879 AC_DEFINE(HAVE_XFIXES, 1, [Define to 1 if you have the Xfixes extension.])
3882 AC_SUBST(XFIXES_CFLAGS)
3883 AC_SUBST(XFIXES_LIBS)
3885 ### Use Xdbe (-lXdbe) if available
3887 if test "${HAVE_X11}" = "yes"; then
3888 AC_CHECK_HEADER(X11/extensions/Xdbe.h,
3889 [AC_CHECK_LIB(Xext, XdbeAllocateBackBufferName, HAVE_XDBE=yes)],
3891 [#include <X11/Xlib.h>
3893 if test $HAVE_XDBE = yes; then
3896 if test $HAVE_XDBE = yes; then
3897 AC_DEFINE(HAVE_XDBE, 1, [Define to 1 if you have the Xdbe extension.])
3900 AC_SUBST(XDBE_CFLAGS)
3903 ### Use libxml (-lxml2) if available
3904 ### mingw32 doesn't use -lxml2, since it loads the library dynamically.
3906 if test "${with_xml2}" != "no"; then
3907 ### I'm not sure what the version number should be, so I just guessed.
3908 EMACS_CHECK_MODULES([LIBXML2], [libxml-2.0 > 2.6.17])
3909 # Built-in libxml2 on OS X 10.8 lacks libxml-2.0.pc.
3910 if test "${HAVE_LIBXML2}" != "yes" && test "$opsys" = "darwin"; then
3911 SAVE_CPPFLAGS="$CPPFLAGS"
3912 if test -z "$xcsdkdir" -a -n "$XCRUN" -a ! -d /usr/include; then
3913 dnl /usr/include is not found. Try Xcode SDK dir if it is sane.
3914 xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
3916 *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
3920 CPPFLAGS="$CPPFLAGS -isystem${xcsdkdir}/usr/include/libxml2"
3921 AC_CHECK_HEADER(libxml/HTMLparser.h,
3922 [AC_CHECK_DECL(HTML_PARSE_RECOVER, HAVE_LIBXML2=yes, ,
3923 [#include <libxml/HTMLparser.h>])])
3924 CPPFLAGS="$SAVE_CPPFLAGS"
3925 if test "${HAVE_LIBXML2}" = "yes"; then
3926 LIBXML2_CFLAGS="-isystem${xcsdkdir}/usr/include/libxml2"
3927 LIBXML2_LIBS="-lxml2"
3930 if test "${HAVE_LIBXML2}" = "yes"; then
3931 if test "${opsys}" != "mingw32"; then
3932 AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no,
3937 if test "${HAVE_LIBXML2}" = "yes"; then
3938 AC_DEFINE(HAVE_LIBXML2, 1, [Define to 1 if you have the libxml library (-lxml2).])
3945 AC_SUBST(LIBXML2_LIBS)
3946 AC_SUBST(LIBXML2_CFLAGS)
3950 if test ! "$with_mailutils"; then
3951 # Check for mail-locking functions in a "mail" library. Probably this should
3952 # have the same check as for liblockfile below.
3953 AC_CHECK_LIB([mail], [maillock], [have_mail=yes], [have_mail=no])
3954 if test $have_mail = yes; then
3956 AC_DEFINE([HAVE_LIBMAIL], [1],
3957 [Define to 1 if you have the 'mail' library (-lmail).])
3960 LIBS="$LIBS_MAIL $LIBS"
3961 AC_CHECK_FUNCS([touchlock])
3964 dnl Debian, at least:
3965 AC_CHECK_LIB([lockfile], [maillock], [have_lockfile=yes], [have_lockfile=no])
3966 if test $have_lockfile = yes; then
3967 LIBS_MAIL=-llockfile
3968 AC_DEFINE([HAVE_LIBLOCKFILE], [1],
3969 [Define to 1 if you have the 'lockfile' library (-llockfile).])
3971 # If we have the shared liblockfile, assume we must use it for mail
3972 # locking (e.g. Debian). If we couldn't link against liblockfile
3973 # (no liblockfile.a installed), ensure that we don't need to.
3974 dnl This works for files generally, not just executables.
3975 dnl Should we look elsewhere for it? Maybe examine /etc/ld.so.conf?
3976 AC_CHECK_PROG([liblockfile], [liblockfile.so], [yes], [no],
3977 [/usr/lib:/lib:/usr/local/lib:$LD_LIBRARY_PATH])
3978 if test "$ac_cv_prog_liblockfile" = yes; then
3979 AC_MSG_ERROR([Shared liblockfile found but can't link against it.
3980 This probably means that movemail could lose mail.
3981 There may be a 'development' package to install containing liblockfile.])
3984 AC_CHECK_HEADERS([maillock.h])
3986 ## Define MAIL_USE_FLOCK (or LOCKF) if the mailer uses flock (or lockf) to
3987 ## interlock access to the mail spool. The alternative is a lock file named
3988 ## /usr/spool/mail/$USER.lock.
3991 aix4-2) mail_lock="lockf" ;;
3993 gnu|freebsd|dragonfly|netbsd|openbsd|darwin) mail_lock="flock" ;;
3995 ## On GNU/Linux systems, both methods are used by various mail programs.
3996 ## I assume most people are using newer mailers that have heard of flock.
3997 ## Change this if you need to.
3998 ## Debian contains a patch which says: "On Debian/GNU/Linux systems,
3999 ## configure gets the right answers, and that means *NOT* using flock.
4000 ## Using flock is guaranteed to be the wrong thing. See Debian Policy
4001 ## for details." and then uses '#ifdef DEBIAN'. Unfortunately the
4002 ## Debian maintainer hasn't provided a clean fix for Emacs.
4003 ## movemail.c will use 'maillock' when MAILDIR, HAVE_LIBMAIL and
4004 ## HAVE_MAILLOCK_H are defined, so the following appears to be the
4005 ## correct logic. -- fx
4006 ## We must check for HAVE_LIBLOCKFILE too, as movemail does.
4007 ## liblockfile is a Free Software replacement for libmail, used on
4008 ## Debian systems and elsewhere. -rfr.
4011 if test $have_mail = yes || test $have_lockfile = yes; then
4012 test $ac_cv_header_maillock_h = yes && mail_lock=no
4016 mail_lock="none-needed" ;;
4020 flock) AC_DEFINE([MAIL_USE_FLOCK], [1],
4021 [Define if the mailer uses flock to interlock the mail spool.]);;
4023 lockf) AC_DEFINE([MAIL_USE_LOCKF], [1],
4024 [Define if the mailer uses lockf to interlock the mail spool.]);;
4028 *) BLESSMAIL_TARGET="need-blessmail" ;;
4031 AC_SUBST([BLESSMAIL_TARGET])
4032 AC_SUBST([LIBS_MAIL])
4035 LIBS="$LIB_PTHREAD $LIB_MATH $LIBS"
4036 AC_CHECK_FUNCS(accept4 fchdir gethostname \
4037 getrusage get_current_dir_name \
4038 lrand48 random rint trunc \
4039 select getpagesize setlocale newlocale \
4040 getrlimit setrlimit shutdown \
4041 pthread_sigmask strsignal setitimer \
4042 sendto recvfrom getsockname getifaddrs freeifaddrs \
4044 getpwent endpwent getgrent endgrent \
4045 cfmakeraw cfsetspeed __executable_start log2 prctl)
4048 dnl No need to check for posix_memalign if aligned_alloc works.
4049 AC_CHECK_FUNCS([aligned_alloc posix_memalign], [break])
4050 AC_CHECK_DECLS([aligned_alloc], [], [], [[#include <stdlib.h>]])
4052 dnl Cannot use AC_CHECK_FUNCS
4053 AC_CACHE_CHECK([for __builtin_frame_address],
4054 [emacs_cv_func___builtin_frame_address],
4055 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_frame_address (0);])],
4056 [emacs_cv_func___builtin_frame_address=yes],
4057 [emacs_cv_func___builtin_frame_address=no])])
4058 if test $emacs_cv_func___builtin_frame_address = yes; then
4059 AC_DEFINE([HAVE___BUILTIN_FRAME_ADDRESS], 1,
4060 [Define to 1 if you have the '__builtin_frame_address' function.])
4062 AC_CACHE_CHECK([for __builtin_unwind_init],
4063 emacs_cv_func___builtin_unwind_init,
4064 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_unwind_init ();])],
4065 emacs_cv_func___builtin_unwind_init=yes,
4066 emacs_cv_func___builtin_unwind_init=no)])
4067 if test $emacs_cv_func___builtin_unwind_init = yes; then
4068 AC_DEFINE(HAVE___BUILTIN_UNWIND_INIT, 1,
4069 [Define to 1 if you have the '__builtin_unwind_init' function.])
4072 AC_CHECK_HEADERS_ONCE(sys/un.h)
4077 AC_CHECK_FUNCS(grantpt)
4079 # PTY-related GNU extensions.
4080 AC_CHECK_FUNCS(getpt posix_openpt)
4082 dnl Run a test program that contains a call to tputs, a call that is
4083 dnl never executed. This tests whether a pre-'main' dynamic linker
4084 dnl works with the library. It's too much trouble to actually call
4085 dnl tputs in the test program, due to portability hassles. When
4086 dnl cross-compiling, assume the test program will run if it links.
4087 AC_DEFUN([tputs_link_source], [
4089 [[extern void tputs (const char *, int, int (*)(int));
4090 int main (int argc, char **argv)
4093 tputs (argv[0], 0, 0);
4097 # Check this now, so that we will NOT find the above functions in ncurses.
4098 # That is because we have not set up to link ncurses in lib-src.
4099 # It's better to believe a function is not available
4100 # than to expect to find it in ncurses.
4101 # Also we need tputs and friends to be able to build at all.
4102 AC_CACHE_CHECK([for library containing tputs], [emacs_cv_tputs_lib],
4103 [if test "${opsys}" = "mingw32"; then
4104 emacs_cv_tputs_lib='none required'
4106 # curses precedes termcap because of AIX (Bug#9736#35) and OpenIndiana.
4107 for tputs_library in '' tinfo ncurses terminfo curses termcap; do
4109 if test -z "$tputs_library"; then
4110 emacs_cv_tputs_lib='none required'
4112 emacs_cv_tputs_lib=-l$tputs_library
4113 LIBS="$emacs_cv_tputs_lib $LIBS"
4115 AC_RUN_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no],
4116 [AC_LINK_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no])])
4118 if test "X$emacs_cv_tputs_lib" != Xno; then
4123 AS_CASE(["$emacs_cv_tputs_lib"],
4124 [no], [AC_MSG_ERROR([The required function 'tputs' was not found in any library.
4125 The following libraries were tried (in order):
4126 libtinfo, libncurses, libterminfo, libcurses, libtermcap
4127 Please try installing whichever of these libraries is most appropriate
4128 for your system, together with its header files.
4129 For example, a libncurses-dev(el) or similar package.])],
4130 [-l*], [LIBS_TERMCAP=$emacs_cv_tputs_lib],
4131 [*], [LIBS_TERMCAP=])
4133 ## Use termcap instead of terminfo?
4134 ## Only true for: freebsd < 40000, ms-w32, msdos, netbsd < 599002500.
4136 ## FIXME? In the cases below where we unconditionally set
4137 ## LIBS_TERMCAP="-lncurses", this overrides LIBS_TERMCAP = -ltinfo,
4138 ## if that was found above to have tputs.
4139 ## Should we use the gnu* logic everywhere?
4141 ## darwin: Prevents crashes when running Emacs in Terminal.app under 10.2.
4142 ## The ncurses library has been moved out of the System framework in
4143 ## Mac OS X 10.2. So if configure detects it, set the command-line
4144 ## option to use it.
4145 darwin) LIBS_TERMCAP="-lncurses" ;;
4147 gnu*) test -z "$LIBS_TERMCAP" && LIBS_TERMCAP="-lncurses" ;;
4150 AC_MSG_CHECKING([whether FreeBSD is new enough to use terminfo])
4151 AC_CACHE_VAL(emacs_cv_freebsd_terminfo,
4152 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <osreldate.h>]],
4153 [[#if __FreeBSD_version < 400000
4156 ]])], emacs_cv_freebsd_terminfo=yes, emacs_cv_freebsd_terminfo=no)])
4158 AC_MSG_RESULT($emacs_cv_freebsd_terminfo)
4160 if test $emacs_cv_freebsd_terminfo = yes; then
4161 LIBS_TERMCAP="-lncurses"
4164 LIBS_TERMCAP="-ltermcap"
4174 if test "x$LIBS_TERMCAP" != "x-lterminfo"; then
4176 LIBS_TERMCAP="-ltermcap"
4180 openbsd | dragonfly) LIBS_TERMCAP="-lncurses" ;;
4182 ## hpux: Make sure we get select from libc rather than from libcurses
4183 ## because libcurses on HPUX 10.10 has a broken version of select.
4184 ## We used to use -lc -lcurses, but this may be cleaner.
4185 ## FIXME? But TERMINFO = yes on hpux (it used to be explicitly
4186 # set that way, now it uses the default). Isn't this a contradiction?
4187 hpux*) LIBS_TERMCAP="-ltermcap" ;;
4191 TERMCAP_OBJ=tparam.o
4192 if test $TERMINFO = yes; then
4193 AC_DEFINE(TERMINFO, 1, [Define to 1 if you use terminfo instead of termcap.])
4194 TERMCAP_OBJ=terminfo.o
4196 if test "X$LIBS_TERMCAP" = "X-lncurses"; then
4197 AC_DEFINE(USE_NCURSES, 1, [Define to 1 if you use ncurses.])
4199 AC_SUBST(LIBS_TERMCAP)
4200 AC_SUBST(TERMCAP_OBJ)
4202 # GNU/Linux-specific timer functions.
4203 AC_CACHE_CHECK([for timerfd interface], [emacs_cv_have_timerfd],
4205 [AC_LANG_PROGRAM([[#include <sys/timerfd.h>
4207 [[timerfd_create (CLOCK_REALTIME,
4208 TFD_CLOEXEC | TFD_NONBLOCK);
4209 timerfd_settime (0, TFD_TIMER_ABSTIME, 0, 0);]])],
4210 [emacs_cv_have_timerfd=yes],
4211 [emacs_cv_have_timerfd=no])])
4212 if test "$emacs_cv_have_timerfd" = yes; then
4213 AC_DEFINE([HAVE_TIMERFD], 1,
4214 [Define to 1 if timerfd functions are supported as in GNU/Linux.])
4217 # Alternate stack for signal handlers.
4218 AC_CACHE_CHECK([whether signals can be handled on alternate stack],
4219 [emacs_cv_alternate_stack],
4221 [AC_LANG_PROGRAM([[#include <signal.h>
4224 struct sigaction sa;
4225 ss.ss_sp = malloc (SIGSTKSZ);
4226 ss.ss_size = SIGSTKSZ;
4227 sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
4228 sigaltstack (&ss, 0);
4229 sigaction (SIGSEGV, &sa, 0);]])],
4230 [emacs_cv_alternate_stack=yes],
4231 [emacs_cv_alternate_stack=no])])
4233 # Do we need the Hesiod library to provide the support routines?
4234 dnl FIXME? Should we be skipping this on Darwin too?
4237 if test "$with_hesiod" != no ; then
4238 # Don't set $LIBS here -- see comments above. FIXME which comments?
4240 AC_CHECK_FUNC(res_send, , [AC_CHECK_FUNC(__res_send, ,
4241 [AC_CHECK_LIB(resolv, res_send, resolv=yes,
4242 [AC_CHECK_LIB(resolv, __res_send, resolv=yes)])])])
4243 if test "$resolv" = yes ; then
4249 AC_CHECK_FUNC(hes_getmailhost, , [AC_CHECK_LIB(hesiod, hes_getmailhost,
4250 hesiod=yes, :, $RESOLVLIB)])
4252 if test x"$hesiod" = xyes; then
4254 LIBRESOLV=$RESOLVLIB
4260 # These tell us which Kerberos-related libraries to use.
4267 if test "${with_kerberos}" != no; then
4269 AC_CHECK_LIB(com_err, com_err, have_com_err=yes, have_com_err=no)
4270 if test $have_com_err = yes; then
4271 COM_ERRLIB=-lcom_err
4272 LIBS="$COM_ERRLIB $LIBS"
4274 AC_CHECK_LIB(crypto, mit_des_cbc_encrypt, have_crypto=yes, have_crypto=no)
4275 if test $have_crypto = yes; then
4277 LIBS="$CRYPTOLIB $LIBS"
4279 AC_CHECK_LIB(k5crypto, mit_des_cbc_encrypt, have_k5crypto=yes, have_k5crypto=no)
4280 if test $have_k5crypto = yes; then
4281 CRYPTOLIB=-lk5crypto
4282 LIBS="$CRYPTOLIB $LIBS"
4284 AC_CHECK_LIB(krb5, krb5_init_context, have_krb5=yes, have_krb5=no)
4285 if test $have_krb5=yes; then
4287 LIBS="$KRB5LIB $LIBS"
4289 dnl FIXME Simplify. Does not match 22 logic, thanks to default_off?
4290 if test "${with_kerberos5}" = no; then
4291 AC_CHECK_LIB(des425, des_cbc_encrypt, have_des425=yes, have_des425=no )
4292 if test $have_des425 = yes; then
4294 LIBS="$DESLIB $LIBS"
4296 AC_CHECK_LIB(des, des_cbc_encrypt, have_des=yes, have_des=no)
4297 if test $have_des = yes; then
4299 LIBS="$DESLIB $LIBS"
4302 AC_CHECK_LIB(krb4, krb_get_cred, have_krb4=yes, have_krb4=no)
4303 if test $have_krb4 = yes; then
4305 LIBS="$KRB4LIB $LIBS"
4307 AC_CHECK_LIB(krb, krb_get_cred, have_krb=yes, have_krb=no)
4308 if test $have_krb = yes; then
4310 LIBS="$KRB4LIB $LIBS"
4315 if test "${with_kerberos5}" != no; then
4316 AC_CHECK_HEADERS(krb5.h,
4317 [AC_CHECK_MEMBERS([krb5_error.text, krb5_error.e_text],,,
4318 [#include <krb5.h>])])
4320 AC_CHECK_HEADERS(krb.h,,
4321 [AC_CHECK_HEADERS(kerberosIV/krb.h,,
4322 [AC_CHECK_HEADERS(kerberos/krb.h)])])
4324 AC_CHECK_HEADERS(com_err.h)
4328 AC_SUBST(COM_ERRLIB)
4334 AC_CHECK_HEADERS(valgrind/valgrind.h)
4336 AC_CHECK_MEMBERS([struct unipair.unicode], [], [], [[#include <linux/kd.h>]])
4338 AC_CHECK_FUNCS_ONCE([sbrk])
4341 AC_CHECK_FUNC(socket, , ok_so_far=no)
4342 if test $ok_so_far = yes; then
4343 AC_CHECK_HEADER(netinet/in.h, , ok_so_far=no)
4345 if test $ok_so_far = yes; then
4346 AC_CHECK_HEADER(arpa/inet.h, , ok_so_far=no)
4348 if test $ok_so_far = yes; then
4349 dnl Fixme: Not used. Should this be HAVE_SOCKETS?
4350 AC_DEFINE(HAVE_INET_SOCKETS, 1,
4351 [Define to 1 if you have inet sockets.])
4356 AC_CHECK_FUNCS(snprintf)
4358 dnl Check for glib. This differs from other library checks in that
4359 dnl Emacs need not link to glib unless some other library is already
4360 dnl linking to glib. Although glib provides no facilities that Emacs
4361 dnl needs for its own purposes, when glib is present Emacs needs to
4362 dnl use primitives like g_main_context_query to avoid clashing with
4363 dnl glib at a low level.
4365 dnl Check this late, since it depends on $GTK_CFLAGS etc.
4367 AC_CACHE_CHECK([whether GLib is linked in], [emacs_cv_links_glib],
4368 [OLDCFLAGS="$CFLAGS"
4370 CFLAGS="$CFLAGS $GTK_CFLAGS $RSVG_CFLAGS $DBUS_CFLAGS $SETTINGS_CFLAGS"
4371 LIBS="$LIBS $GTK_LIBS $RSVG_LIBS $DBUS_LIBS $SETTINGS_LIBS"
4372 CFLAGS="$CFLAGS $NOTIFY_CFLAGS $CAIRO_CFLAGS"
4373 LIBS="$LIBS $NOTIFY_LIBS $CAIRO_LIBS"
4374 AC_LINK_IFELSE([AC_LANG_PROGRAM(
4377 [[g_print ("Hello world");]])],
4378 [emacs_cv_links_glib=yes],
4379 [emacs_cv_links_glib=no])
4382 if test "${emacs_cv_links_glib}" = "yes"; then
4383 AC_DEFINE(HAVE_GLIB, 1, [Define to 1 if GLib is linked in.])
4384 if test "$HAVE_NS" = no;then
4390 dnl Adapted from Haible's version.
4391 AC_CACHE_CHECK([for nl_langinfo and CODESET], emacs_cv_langinfo_codeset,
4392 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
4393 [[char* cs = nl_langinfo(CODESET);]])],
4394 emacs_cv_langinfo_codeset=yes,
4395 emacs_cv_langinfo_codeset=no)
4397 if test $emacs_cv_langinfo_codeset = yes; then
4398 AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
4399 [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
4404 dnl Fixme: AC_SYS_POSIX_TERMIOS should probably be used, but it's not clear
4405 dnl how the tty code is related to POSIX and/or other versions of termios.
4406 dnl The following looks like a useful start.
4408 dnl AC_SYS_POSIX_TERMIOS
4409 dnl if test $ac_cv_sys_posix_termios = yes; then
4410 dnl AC_DEFINE(HAVE_TERMIOS, 1, [Define to 1 if you have POSIX-style functions
4411 dnl and macros for terminal control.])
4412 dnl AC_DEFINE(HAVE_TCATTR, 1, [Define to 1 if you have tcgetattr and tcsetattr.])
4415 dnl Turned on June 1996 supposing nobody will mind it.
4416 dnl MinGW emulates passwd database, so this feature doesn't make sense there.
4417 if test "${opsys}" != "mingw32"; then
4418 AC_DEFINE(AMPERSAND_FULL_NAME, 1, [Define to use the convention that &
4419 in the full name stands for the login id.])
4422 dnl Everybody supports this, except MS.
4423 dnl Seems like the kind of thing we should be testing for, though.
4424 ## Note: PTYs are broken on darwin <6. Use at your own risk.
4425 if test "${opsys}" != "mingw32"; then
4426 AC_DEFINE(HAVE_PTYS, 1, [Define if the system supports pty devices.])
4429 dnl Everybody supports this, except MS-DOS.
4430 dnl Seems like the kind of thing we should be testing for, though.
4431 dnl Compare with HAVE_INET_SOCKETS (which is unused...) above.
4432 AC_DEFINE(HAVE_SOCKETS, 1, [Define if the system supports
4433 4.2-compatible sockets.])
4435 AH_TEMPLATE(INTERNAL_TERMINAL, [This is substituted when $TERM is "internal".])
4437 AH_TEMPLATE(NULL_DEVICE, [Name of the file to open to get
4438 a null file, or a data sink.])
4439 if test "${opsys}" = "mingw32"; then
4440 AC_DEFINE(NULL_DEVICE, ["NUL:"])
4442 AC_DEFINE(NULL_DEVICE, ["/dev/null"])
4445 if test "${opsys}" = "mingw32"; then
4450 AC_DEFINE_UNQUOTED(SEPCHAR, ['$SEPCHAR'], [Character that separates PATH elements.])
4451 dnl This is for MinGW, and is used in test/Makefile.in.
4452 dnl The MSYS Bash has heuristics for replacing ':' with ';' when it
4453 dnl decides that a command-line argument to be passed to a MinGW program
4454 dnl is a PATH-style list of directories. But that heuristics plays it
4455 dnl safe, and only does the replacement when it is _absolutely_ sure it
4456 dnl sees a colon-separated list of file names; e.g. ":." is left alone,
4457 dnl which breaks in-tree builds. So we do this manually instead.
4458 dnl Note that we cannot rely on PATH_SEPARATOR, as that one will always
4459 dnl be computed as ':' in MSYS Bash.
4462 dnl Everybody supports this, except MS-DOS.
4463 AC_DEFINE(subprocesses, 1, [Define to enable asynchronous subprocesses.])
4465 AC_DEFINE(USER_FULL_NAME, [pw->pw_gecos], [How to get a user's full name.])
4468 AC_DEFINE(DIRECTORY_SEP, ['/'],
4469 [Character that separates directories in a file name.])
4471 if test "${opsys}" = "mingw32"; then
4472 AC_DEFINE(IS_DEVICE_SEP(_c_), [((_c_) == ':')],
4473 [Returns true if character is a device separator.])
4475 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == '/' || (_c_) == '\\')],
4476 [Returns true if character is a directory separator.])
4478 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP(_c_))],
4479 [Returns true if character is any form of separator.])
4481 AC_DEFINE(IS_DEVICE_SEP(_c_), 0,
4482 [Returns true if character is a device separator.])
4484 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == DIRECTORY_SEP)],
4485 [Returns true if character is a directory separator.])
4487 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_))],
4488 [Returns true if character is any form of separator.])
4491 if test "$USE_X_TOOLKIT" != "none"; then
4495 dnl Assar Westerlund <assar@sics.se> says this is necessary
4496 dnl for HP-UX 10.20, and that it works for HP-UX 0 as well.
4500 if test "$have_editres" != no && test ! -z "$LIBXMU"; then
4502 dnl See libXmu.a check above.
4503 if test x$HAVE_X11XTR6 = xyes; then
4504 LIBS="-lXt -lSM -lICE $LIBXMU"
4506 OTHERLIBS="-lXt -$LIBXMU"
4509 [#include <X11/Intrinsic.h>
4510 #include <X11/Xmu/Editres.h>],
4511 [_XEditResCheckMessages (0, 0, 0, 0);],
4512 [AC_DEFINE([X_TOOLKIT_EDITRES], 1,
4513 [Define to 1 if we should use XEditRes.])])
4520 dnl Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
4521 dnl instead, there's a system variable _sys_nsig. Unfortunately, we
4522 dnl need the constant to dimension an array. So wire in the appropriate
4524 AC_DEFINE(NSIG_MINIMUM, 32, [Minimum value of NSIG.])
4528 emacs_broken_SIGIO=no
4531 dnl SIGIO exists, but the feature doesn't work in the way Emacs needs.
4532 hpux* | nacl | openbsd | sol2* | unixware )
4533 emacs_broken_SIGIO=yes
4537 dnl On AIX Emacs uses the gmalloc.c malloc implementation. But given
4538 dnl the way this system works, libc functions that return malloced
4539 dnl memory use the libc malloc implementation. Calling xfree or
4540 dnl xrealloc on the results of such functions results in a crash.
4542 dnl One solution for this could be to define SYSTEM_MALLOC in configure,
4543 dnl but that does not currently work on this system.
4545 dnl It is possible to completely override the malloc implementation on
4546 dnl AIX, but that involves putting the malloc functions in a shared
4547 dnl library and setting the MALLOCTYPE environment variable to point to
4548 dnl that shared library.
4550 dnl Emacs currently calls xrealloc on the results of get_current_dir name,
4551 dnl to avoid a crash just use the Emacs implementation for that function.
4553 dnl FIXME We could change the AC_CHECK_FUNCS call near the start
4554 dnl of this file, so that we do not check for get_current_dir_name
4555 dnl on AIX. But that might be fragile if something else ends
4556 dnl up testing for get_current_dir_name as a dependency.
4557 AC_DEFINE(BROKEN_GET_CURRENT_DIR_NAME, 1, [Define if
4558 get_current_dir_name should not be used.])
4562 dnl Circumvent a bug in FreeBSD. In the following sequence of
4563 dnl writes/reads on a PTY, read(2) returns bogus data:
4565 dnl write(2) 1022 bytes
4566 dnl write(2) 954 bytes, get EAGAIN
4567 dnl read(2) 1024 bytes in process_read_output
4568 dnl read(2) 11 bytes in process_read_output
4570 dnl That is, read(2) returns more bytes than have ever been written
4571 dnl successfully. The 1033 bytes read are the 1022 bytes written
4572 dnl successfully after processing (for example with CRs added if the
4573 dnl terminal is set up that way which it is here). The same bytes will
4574 dnl be seen again in a later read(2), without the CRs.
4575 AC_DEFINE(BROKEN_PTY_READ_AFTER_EAGAIN, 1, [Define on FreeBSD to
4576 work around an issue when reading from a PTY.])
4582 dnl FIXME Can't we test if this exists (eg /proc/$$)?
4583 AC_DEFINE(HAVE_PROCFS, 1, [Define if you have the /proc filesystem.])
4588 darwin | dragonfly | freebsd | netbsd | openbsd )
4589 AC_DEFINE(DONT_REOPEN_PTY, 1, [Define if process.c does not need to
4590 close a pty to make it a controlling terminal (it is already a
4591 controlling terminal of the subprocess, because we did ioctl TIOCSCTTY).])
4595 dnl FIXME Surely we can test for this rather than hard-code it.
4597 netbsd | openbsd) sound_device="/dev/audio" ;;
4598 *) sound_device="/dev/dsp" ;;
4602 AC_DEFINE_UNQUOTED(DEFAULT_SOUND_DEVICE, "$sound_device",
4603 [Name of the default sound device.])
4606 dnl Emacs can read input using SIGIO and buffering characters itself,
4607 dnl or using CBREAK mode and making C-g cause SIGINT.
4608 dnl The choice is controlled by the variable interrupt_input.
4610 dnl Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
4612 dnl Emacs uses the presence of the USABLE_SIGIO macro
4613 dnl to indicate whether or not signal-driven I/O is possible. It uses
4614 dnl INTERRUPT_INPUT to decide whether to use it by default.
4616 dnl SIGIO can be used only on systems that implement it (4.2 and 4.3).
4617 dnl CBREAK mode has two disadvantages
4618 dnl 1) At least in 4.2, it is impossible to handle the Meta key properly.
4619 dnl I hear that in system V this problem does not exist.
4620 dnl 2) Control-G causes output to be discarded.
4621 dnl I do not know whether this can be fixed in system V.
4623 dnl Another method of doing input is planned but not implemented.
4624 dnl It would have Emacs fork off a separate process
4625 dnl to read the input and send it to the true Emacs process
4628 darwin | gnu-linux | gnu-kfreebsd )
4629 AC_DEFINE(INTERRUPT_INPUT, 1, [Define to read input using SIGIO.])
4634 dnl If the system's imake configuration file defines 'NeedWidePrototypes'
4635 dnl as 'NO', we must define NARROWPROTO manually. Such a define is
4636 dnl generated in the Makefile generated by 'xmkmf'. If we don't define
4637 dnl NARROWPROTO, we will see the wrong function prototypes for X functions
4638 dnl taking float or double parameters.
4640 cygwin|gnu|gnu-linux|gnu-kfreebsd|freebsd|netbsd|openbsd)
4641 AC_DEFINE(NARROWPROTO, 1, [Define if system's imake configuration
4642 file defines 'NeedWidePrototypes' as 'NO'.])
4647 dnl Used in process.c, this must be a loop, even if it only runs once.
4648 AH_TEMPLATE(PTY_ITERATION, [How to iterate over PTYs.])
4649 dnl Only used if !PTY_ITERATION. Iterate from FIRST_PTY_LETTER to z,
4650 dnl trying suffixes 0-16.
4651 AH_TEMPLATE(FIRST_PTY_LETTER, [Letter to use in finding device name of
4652 first PTY, if PTYs are supported.])
4653 AH_TEMPLATE(PTY_OPEN, [How to open a PTY, if non-standard.])
4654 AH_TEMPLATE(PTY_NAME_SPRINTF, [How to get the device name of the control
4655 end of a PTY, if non-standard.])
4656 AH_TEMPLATE(PTY_TTY_NAME_SPRINTF, [How to get device name of the tty
4657 end of a PTY, if non-standard.])
4661 AC_DEFINE(PTY_ITERATION, [int c; for (c = 0; !c ; c++)])
4662 dnl You allocate a pty by opening /dev/ptc to get the master side.
4663 dnl To get the name of the slave side, you just ttyname() the master side.
4664 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptc");])
4665 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [strcpy (pty_name, ttyname (fd));])
4669 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4670 dnl multi-line AC_DEFINEs are hard. :(
4671 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)])
4672 AC_DEFINE(PTY_NAME_SPRINTF, [])
4673 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
4676 gnu | openbsd | qnxnto )
4677 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4680 gnu-linux | gnu-kfreebsd | dragonfly | freebsd | netbsd | darwin | nacl )
4682 if test "x$ac_cv_func_grantpt" = xyes; then
4683 AC_DEFINE(UNIX98_PTYS, 1, [Define if the system has Unix98 PTYs.])
4684 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4685 dnl Note that grantpt and unlockpt may fork. We must block SIGCHLD
4686 dnl to prevent sigchld_handler from intercepting the child's death.
4687 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); }])
4688 dnl if HAVE_POSIX_OPENPT
4689 if test "x$ac_cv_func_posix_openpt" = xyes; then
4690 AC_DEFINE(PTY_OPEN, [do { fd = posix_openpt (O_RDWR | O_CLOEXEC | O_NOCTTY); if (fd < 0 && errno == EINVAL) fd = posix_openpt (O_RDWR | O_NOCTTY); } while (false)])
4691 AC_DEFINE(PTY_NAME_SPRINTF, [])
4693 elif test "x$ac_cv_func_getpt" = xyes; then
4694 AC_DEFINE(PTY_OPEN, [fd = getpt ()])
4695 AC_DEFINE(PTY_NAME_SPRINTF, [])
4697 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4700 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4705 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4706 AC_DEFINE(PTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/ptym/pty%c%x", c, i);])
4707 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/pty/tty%c%x", c, i);])
4711 dnl On SysVr4, grantpt(3) forks a subprocess, so do not use
4712 dnl O_CLOEXEC when opening the pty, and keep the SIGCHLD handler
4713 dnl from intercepting that death. If any child but grantpt's should die
4714 dnl within, it should be caught after sigrelse(2).
4715 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4716 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); }])
4720 dnl Comments are as per sol2*.
4721 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4722 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); }])
4729 dnl This change means that we don't loop through allocate_pty too
4730 dnl many times in the (rare) event of a failure.
4731 AC_DEFINE(FIRST_PTY_LETTER, ['z'])
4732 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4733 dnl Push various streams modules onto a PTY channel. Used in process.c.
4734 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.])
4739 AH_TEMPLATE(SIGNALS_VIA_CHARACTERS, [Make process_send_signal work by
4740 "typing" a signal character on the pty.])
4743 dnl Perry Smith <pedz@ddivt1.austin.ibm.com> says this is correct for AIX.
4744 aix4-2 | cygwin | gnu | dragonfly | freebsd | netbsd | openbsd | darwin )
4745 AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4748 dnl 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works.
4749 dnl FIXME Does gnu-kfreebsd have linux/version.h? It seems unlikely...
4750 gnu-linux | gnu-kfreebsd )
4752 AC_CACHE_CHECK([for signals via characters], [emacs_cv_signals_via_chars],
4753 [AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4754 #include <linux/version.h>
4755 #if LINUX_VERSION_CODE < 0x20400
4756 # error "Linux version too old"
4758 ]], [[]])], emacs_cv_signals_via_chars=yes, emacs_cv_signals_via_chars=no)])
4760 test "$emacs_cv_signals_via_chars" = yes && AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4765 AH_TEMPLATE(TAB3, [Undocumented.])
4768 darwin) AC_DEFINE(TAB3, OXTABS) ;;
4770 gnu | dragonfly | freebsd | netbsd | openbsd )
4771 AC_DEFINE(TABDLY, OXTABS, [Undocumented.])
4772 AC_DEFINE(TAB3, OXTABS)
4775 gnu-linux | gnu-kfreebsd )
4776 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4780 ]], [[]])], AC_DEFINE(GC_MARK_SECONDARY_STACK(),
4781 [do { extern void *__libc_ia64_register_backing_store_base; __builtin_ia64_flushrs (); mark_memory (__libc_ia64_register_backing_store_base, __builtin_ia64_bsp ());} while (false)],
4782 [Mark a secondary stack, like the register stack on the ia64.]), [])
4786 AC_DEFINE(RUN_TIME_REMAP, 1, [Define if emacs.c needs to call
4787 run_time_remap; for HPUX.])
4792 dnl This won't be used automatically yet. We also need to know, at least,
4793 dnl that the stack is continuous.
4794 AH_TEMPLATE(GC_SETJMP_WORKS, [Define if setjmp is known to save all
4795 registers relevant for conservative garbage collection in the jmp_buf.])
4799 dnl Not all the architectures are tested, but there are Debian packages
4800 dnl for SCM and/or Guile on them, so the technique must work. See also
4801 dnl comments in alloc.c concerning setjmp and gcc.
4802 dnl Fixme: it's probably safe to just use the GCC conditional below.
4803 gnu-linux | gnu-kfreebsd )
4804 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4805 #if defined __i386__ || defined __sparc__ || defined __mc68000__ \
4806 || defined __alpha__ || defined __mips__ || defined __s390__ \
4807 || defined __arm__ || defined __powerpc__ || defined __amd64__ \
4808 || defined __ia64__ || defined __sh__
4811 # error "setjmp not known to work on this arch"
4813 ]], [[]])], AC_DEFINE(GC_SETJMP_WORKS, 1))
4818 if test x$GCC = xyes; then
4819 dnl GC_SETJMP_WORKS is nearly always appropriate for GCC.
4820 AC_DEFINE(GC_SETJMP_WORKS, 1)
4823 aix* | dragonfly | freebsd | netbsd | openbsd | sol2* )
4824 AC_DEFINE(GC_SETJMP_WORKS, 1)
4829 dnl In a weird quirk, MS runtime uses _setjmp and longjmp.
4830 AC_CACHE_CHECK([for _setjmp], [emacs_cv_func__setjmp],
4833 [[#include <setjmp.h>
4835 # define _longjmp longjmp
4840 _longjmp (j, 1);]])],
4841 [emacs_cv_func__setjmp=yes],
4842 [emacs_cv_func__setjmp=no])])
4843 if test $emacs_cv_func__setjmp = yes; then
4844 AC_DEFINE([HAVE__SETJMP], 1, [Define to 1 if _setjmp and _longjmp work.])
4847 # We need to preserve signal mask to handle C stack overflows.
4848 AC_CACHE_CHECK([for sigsetjmp], [emacs_cv_func_sigsetjmp],
4851 [[#include <setjmp.h>
4854 if (! sigsetjmp (j, 1))
4855 siglongjmp (j, 1);]])],
4856 [emacs_cv_func_sigsetjmp=yes],
4857 [emacs_cv_func_sigsetjmp=no])])
4858 if test $emacs_cv_func_sigsetjmp = yes; then
4859 AC_DEFINE([HAVE_SIGSETJMP], 1,
4860 [Define to 1 if sigsetjmp and siglongjmp work.])
4863 case $emacs_cv_func_sigsetjmp,$emacs_cv_alternate_stack,$opsys in
4864 yes,yes,* | *,*,mingw32)
4865 AC_DEFINE([HAVE_STACK_OVERFLOW_HANDLING], 1,
4866 [Define to 1 if C stack overflow can be handled in some cases.]);;
4871 dnl TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
4872 dnl subprocesses the usual way. But TIOCSIGNAL does work for PTYs,
4873 dnl and this is all we need.
4874 AC_DEFINE(TIOCSIGSEND, TIOCSIGNAL, [Some platforms redefine this.])
4881 dnl Used in xfaces.c.
4882 AC_DEFINE(XOS_NEEDS_TIME_H, 1, [Compensate for a bug in Xos.h on
4883 some systems, where it requires time.h.])
4888 dnl Define symbols to identify the version of Unix this is.
4889 dnl Define all the symbols that apply correctly.
4890 AH_TEMPLATE(DOS_NT, [Define if the system is MS DOS or MS Windows.])
4891 AH_TEMPLATE(MSDOS, [Define if the system is MS DOS.])
4892 AH_TEMPLATE(USG, [Define if the system is compatible with System III.])
4893 AH_TEMPLATE(USG5_4, [Define if the system is compatible with System V Release 4.])
4898 dnl This symbol should be defined on AIX Version 3 ???????
4899 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4901 # error "_AIX not defined"
4903 ]], [[]])], [], AC_DEFINE(_AIX, [], [Define if the system is AIX.]))
4907 AC_DEFINE(CYGWIN, 1, [Define if the system is Cygwin.])
4911 dnl Not __APPLE__, as this may not be defined on non-macOS Darwin.
4912 dnl Not DARWIN, because Panther and lower CoreFoundation.h use DARWIN to
4913 dnl distinguish macOS from pure Darwin.
4914 AC_DEFINE(DARWIN_OS, [], [Define if the system is Darwin.])
4917 gnu-linux | gnu-kfreebsd )
4919 AC_DEFINE(GNU_LINUX, [], [Define if ths system is compatible with GNU/Linux.])
4924 AC_DEFINE(HPUX, [], [Define if the system is HPUX.])
4928 AC_DEFINE(DOS_NT, [])
4929 AC_DEFINE(WINDOWSNT, 1, [Define if compiling for native MS Windows.])
4930 if test "x$ac_enable_checking" != "x" ; then
4931 AC_DEFINE(EMACSDEBUG, 1, [Define to 1 to enable w32 debug facilities.])
4937 AC_DEFINE(USG5_4, [])
4938 AC_DEFINE(SOLARIS2, [], [Define if the system is Solaris.])
4943 AC_DEFINE(USG5_4, [])
4947 AC_CACHE_CHECK([for usable FIONREAD], [emacs_cv_usable_FIONREAD],
4950 dnl BUILD 9008 - FIONREAD problem still exists in X-Windows.
4951 emacs_cv_usable_FIONREAD=no
4955 emacs_cv_usable_FIONREAD=yes
4960 [AC_LANG_PROGRAM([[#include <sys/types.h>
4961 #include <sys/ioctl.h>
4963 # include <sys/filio.h>
4966 [[int foo = ioctl (0, FIONREAD, &foo);]])],
4967 [emacs_cv_usable_FIONREAD=yes],
4968 [emacs_cv_usable_FIONREAD=no])
4971 if test $emacs_cv_usable_FIONREAD = yes; then
4972 AC_DEFINE([USABLE_FIONREAD], [1], [Define to 1 if FIONREAD is usable.])
4974 if test $emacs_broken_SIGIO = no; then
4975 AC_CACHE_CHECK([for usable SIGIO], [emacs_cv_usable_SIGIO],
4977 [AC_LANG_PROGRAM([[#include <fcntl.h>
4980 [[int foo = SIGIO | F_SETFL | FASYNC;]])],
4981 [emacs_cv_usable_SIGIO=yes],
4982 [emacs_cv_usable_SIGIO=no])],
4983 [emacs_cv_usable_SIGIO=yes],
4984 [emacs_cv_usable_SIGIO=no])
4985 if test $emacs_cv_usable_SIGIO = yes; then
4986 AC_DEFINE([USABLE_SIGIO], [1], [Define to 1 if SIGIO is usable.])
4993 dnl It works to open the pty's tty in the parent (Emacs), then
4994 dnl close and reopen it in the child.
4995 AC_DEFINE(USG_SUBTTY_WORKS, 1, [Define for USG systems where it
4996 works to open a pty's tty in the parent process, then close and
4997 reopen it in the child.])
5001 AC_DEFINE(_STRUCTURED_PROC, 1, [Needed for system_process_attributes
5006 # Set up the CFLAGS for real compilation, so we can substitute it.
5007 CFLAGS="$REAL_CFLAGS"
5008 CPPFLAGS="$REAL_CPPFLAGS"
5011 ## Hack to detect a buggy GCC version.
5012 if test "$GCC" = yes && \
5013 $CC --version 2> /dev/null | grep 'gcc.* 4.5.0' >/dev/null; then
5015 *-fno-optimize-sibling-calls*) ;;
5017 AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS.]);;
5021 version=$PACKAGE_VERSION
5023 copyright="Copyright (C) 2018 Free Software Foundation, Inc."
5024 AC_DEFINE_UNQUOTED(COPYRIGHT, ["$copyright"],
5025 [Short copyright string for this version of Emacs.])
5028 ### Specify what sort of things we'll be editing into Makefile and config.h.
5029 ### Use configuration here uncanonicalized to avoid exceeding size limits.
5031 AC_SUBST(configuration)
5036 AC_SUBST(exec_prefix)
5039 AC_SUBST(sharedstatedir)
5040 AC_SUBST(libexecdir)
5044 AC_SUBST(standardlisppath)
5045 AC_SUBST(locallisppath)
5047 AC_SUBST(x_default_search_path)
5049 AC_SUBST(archlibdir)
5055 ## FIXME? Nothing uses @LD_SWITCH_X_SITE@.
5056 ## src/Makefile.in did add LD_SWITCH_X_SITE (as a cpp define) to the
5057 ## end of LIBX_BASE, but nothing ever set it.
5058 AC_SUBST(LD_SWITCH_X_SITE)
5059 AC_SUBST(C_SWITCH_X_SITE)
5060 AC_SUBST(GNUSTEP_CFLAGS)
5062 ## Used in lwlib/Makefile.in.
5063 AC_SUBST(X_TOOLKIT_TYPE)
5065 AC_SUBST(ns_appbindir)
5066 AC_SUBST(ns_appresdir)
5068 AC_SUBST(GNU_OBJC_CFLAGS)
5069 AC_SUBST(OTHER_FILES)
5071 if test -n "${term_header}"; then
5072 AC_DEFINE_UNQUOTED(TERM_HEADER, "${term_header}",
5073 [Define to the header for the built-in window system.])
5076 AC_DEFINE_UNQUOTED(EMACS_CONFIGURATION, "${canonical}",
5077 [Define to the canonical Emacs configuration name.])
5078 AC_DEFINE_UNQUOTED(EMACS_CONFIG_OPTIONS, "${emacs_config_options}",
5079 [Define to the options passed to configure.])
5084 if test "${HAVE_X_WINDOWS}" = "yes" ; then
5085 AC_DEFINE(HAVE_X_WINDOWS, 1,
5086 [Define to 1 if you want to use the X window system.])
5088 XOBJ="xterm.o xfns.o xselect.o xrdb.o xsmfns.o xsettings.o"
5090 if test "$HAVE_CAIRO" = "yes"; then
5091 FONT_OBJ="ftfont.o ftcrfont.o"
5092 elif test "$HAVE_XFT" = "yes"; then
5093 FONT_OBJ="$FONT_OBJ ftfont.o xftfont.o ftxfont.o"
5094 elif test "$HAVE_FREETYPE" = "yes"; then
5095 FONT_OBJ="$FONT_OBJ ftfont.o ftxfont.o"
5105 if test "${USE_X_TOOLKIT}" != "none" ; then
5107 AC_DEFINE(USE_X_TOOLKIT, 1, [Define to 1 if using an X toolkit.])
5108 if test "${USE_X_TOOLKIT}" = "LUCID"; then
5109 AC_DEFINE(USE_LUCID, 1, [Define to 1 if using the Lucid X toolkit.])
5110 elif test "${USE_X_TOOLKIT}" = "MOTIF"; then
5111 AC_DEFINE(USE_MOTIF, 1, [Define to 1 if using the Motif X toolkit.])
5115 ## Paul Abrahams <abrahams at equinox.shaysnet.com> says this is needed.
5116 MOTIF_LIBW="$MOTIF_LIBW -lXpm"
5120 ## Richard Anthony Ryan <ryanr at ellingtn.ftc.nrcs.usda.gov>
5121 ## says -lXimp is needed in UNIX_SV ... 4.2 1.1.2.
5122 MOTIF_LIBW="MOTIF_LIBW -lXimp"
5126 ## olson@mcs.anl.gov says -li18n is needed by -lXm.
5127 MOTIF_LIBW="$MOTIF_LIBW -li18n"
5130 MOTIF_LIBW="$MOTIF_LIBW $LIBXP"
5133 AC_SUBST(WIDGET_OBJ)
5136 case "$USE_X_TOOLKIT" in
5137 MOTIF) TOOLKIT_LIBW="$MOTIF_LIBW" ;;
5138 LUCID) TOOLKIT_LIBW="$LUCID_LIBW" ;;
5139 none) test "x$HAVE_GTK" = "xyes" && TOOLKIT_LIBW="$GTK_LIBS" ;;
5141 if test "$HAVE_XWIDGETS" = "yes"; then
5142 TOOLKIT_LIBW="$TOOLKIT_LIBW -lXcomposite"
5144 AC_SUBST(TOOLKIT_LIBW)
5146 if test "${opsys}" != "mingw32"; then
5147 if test "$USE_X_TOOLKIT" = "none"; then
5148 LIBXT_OTHER="\$(LIBXSM)"
5150 LIBXT_OTHER="\$(LIBXMU) -lXt \$(LIBXTR6) -lXext"
5153 AC_SUBST(LIBXT_OTHER)
5155 if test "${HAVE_X11}" = "yes" ; then
5156 AC_DEFINE(HAVE_X11, 1,
5157 [Define to 1 if you want to use version 11 of X windows.])
5158 LIBX_OTHER="\$(LIBXT) \$(LIBX_EXTRA)"
5162 AC_SUBST(LIBX_OTHER)
5165 if test "$HAVE_GTK" = yes || test "$HAVE_X11" != yes; then
5167 elif test "$USE_X_TOOLKIT" = none; then
5169 LIBXMENU='$(oldXMenudir)/libXMenu11.a'
5170 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS oldXMenu"
5172 LIBXMENU='$(lwlibdir)/liblw.a'
5173 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS lwlib"
5177 if test "${GNU_MALLOC}" = "yes" ; then
5178 AC_DEFINE(GNU_MALLOC, 1,
5179 [Define to 1 if you want to use the GNU memory allocator.])
5183 if test "${REL_ALLOC}" = "yes" ; then
5184 AC_DEFINE(REL_ALLOC, 1,
5185 [Define REL_ALLOC if you want to use the relocating allocator for
5188 test "$system_malloc" != "yes" && RALLOC_OBJ=ralloc.o
5190 AC_SUBST(RALLOC_OBJ)
5192 if test "$opsys" = "cygwin"; then
5193 CYGWIN_OBJ="cygw32.o"
5194 ## Cygwin differs because of its unexec().
5196 POST_ALLOC_OBJ=lastfile.o
5197 elif test "$opsys" = "mingw32"; then
5200 POST_ALLOC_OBJ=lastfile.o
5203 PRE_ALLOC_OBJ=lastfile.o
5206 AC_SUBST(CYGWIN_OBJ)
5207 AC_SUBST(PRE_ALLOC_OBJ)
5208 AC_SUBST(POST_ALLOC_OBJ)
5210 dnl Call this 'FORTIFY_SOUR' so that it sorts before the 'FORTIFY_SOURCE'
5211 dnl verbatim defined above. The tricky name is apropos, as this hack
5212 dnl makes Fortify go sour!
5213 AH_VERBATIM([FORTIFY_SOUR],
5214 [/* Without the following workaround, Emacs runs slowly on OS X 10.8.
5215 The workaround disables some useful run-time checking, so it
5216 should be conditional to the platforms with the performance bug.
5217 Perhaps Apple will fix this some day; also see m4/extern-inline.m4. */
5218 #if defined __APPLE__ && defined __GNUC__
5219 # ifndef _DONT_USE_CTYPE_INLINE_
5220 # define _DONT_USE_CTYPE_INLINE_
5222 # ifndef _FORTIFY_SOURCE
5223 # define _FORTIFY_SOURCE 0
5228 # If user asks to omit features, disable optional features that gnulib
5229 # might otherwise enable.
5230 if test "$with_features" = no && test "$enable_acl" != yes; then
5234 # Configure gnulib. Although this does not affect CFLAGS or LIBS permanently.
5235 # it temporarily reverts them to their pre-pkg-config values,
5236 # because gnulib needs to work with both src (which uses the
5237 # pkg-config stuff) and lib-src (which does not). For example, gnulib
5238 # may need to determine whether LIB_CLOCK_GETTIME should contain -lrt,
5239 # and it therefore needs to run in an environment where LIBS does not
5240 # already contain -lrt merely because 'pkg-config --libs' printed '-lrt'
5241 # for some package unrelated to lib-src.
5244 CFLAGS=$pre_PKG_CONFIG_CFLAGS
5245 LIBS="$LIB_PTHREAD $pre_PKG_CONFIG_LIBS"
5246 gl_ASSERT_NO_GNULIB_POSIXCHECK
5247 gl_ASSERT_NO_GNULIB_TESTS
5252 if test "${opsys}" = "mingw32"; then
5253 CPPFLAGS="$CPPFLAGS -DUSE_CRT_DLL=1 -I \${abs_top_srcdir}/nt/inc"
5254 # Remove unneeded switches from the value of CC that goes to Makefiles
5255 CC=`AS_ECHO(["$CC"]) | sed -e "s,$GCC_TEST_OPTIONS,,"`
5259 aix4-2) LD_SWITCH_SYSTEM_TEMACS="-Wl,-bnodelcsect" ;;
5261 cygwin) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000" ;;
5264 ## The -headerpad option tells ld (see man page) to leave room at the
5265 ## end of the header for adding load commands. Needed for dumping.
5266 ## 0x1000 is enough for roughly 52 load commands on the x86_64
5267 ## architecture (where they are 78 bytes each). The actual number of
5268 ## load commands added is not consistent but normally ranges from
5269 ## about 14 to about 34. Setting it high gets us plenty of slop and
5270 ## only costs about 1.5K of wasted binary space.
5271 headerpad_extra=1000
5272 if test "$HAVE_NS" = "yes"; then
5273 libs_nsgui="-framework AppKit"
5274 if test "$NS_IMPL_COCOA" = "yes"; then
5275 libs_nsgui="$libs_nsgui -framework IOKit -framework Carbon"
5280 LD_SWITCH_SYSTEM_TEMACS="-fno-pie -prebind $libs_nsgui -Xlinker -headerpad -Xlinker $headerpad_extra"
5282 ## This is here because src/Makefile.in did some extra fiddling around
5283 ## with LD_SWITCH_SYSTEM. It seems cleaner to put this in
5284 ## LD_SWITCH_SYSTEM_TEMACS instead,
5285 test "x$LD_SWITCH_SYSTEM" = "x" && test "x$GCC" != "xyes" && \
5286 LD_SWITCH_SYSTEM_TEMACS="-X $LD_SWITCH_SYSTEM_TEMACS"
5289 ## LD_SWITCH_X_SITE_RPATH is a -rpath option saying where to
5290 ## find X at run-time.
5291 ## When handled by cpp, this was in LD_SWITCH_SYSTEM. However, at the
5292 ## point where configure sourced the s/*.h file, LD_SWITCH_X_SITE_RPATH
5293 ## had not yet been defined and was expanded to null. Hence LD_SWITCH_SYSTEM
5294 ## had different values in configure (in ac_link) and src/Makefile.in.
5295 ## It seems clearer therefore to put this piece in LD_SWITCH_SYSTEM_TEMACS.
5296 gnu*) LD_SWITCH_SYSTEM_TEMACS="\$(LD_SWITCH_X_SITE_RPATH)" ;;
5299 ## Is it any better under MinGW64 to relocate emacs into higher addresses?
5300 case "$canonical" in
5301 x86_64-*-*) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x400000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5302 *) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x01000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5306 *) LD_SWITCH_SYSTEM_TEMACS= ;;
5309 # -no-pie or -nopie fixes a temacs segfault on Gentoo, OpenBSD,
5310 # Ubuntu, and other systems with "hardened" GCC configurations for
5311 # some reason (Bug#18784). We don't know why this works, but not
5312 # segfaulting is better than segfaulting. Use ac_c_werror_flag=yes
5313 # when trying the option, otherwise clang keeps warning that it does
5314 # not understand it, and pre-4.6 GCC has a similar problem
5315 # (Bug#20338). Prefer -no-pie to -nopie, as -no-pie is the
5316 # spelling used by GCC 6.1.0 and later (Bug#24682).
5318 [for $CC option to disable position independent executables],
5319 [emacs_cv_prog_cc_no_pie],
5320 [emacs_save_c_werror_flag=$ac_c_werror_flag
5321 emacs_save_LDFLAGS=$LDFLAGS
5322 ac_c_werror_flag=yes
5323 for emacs_cv_prog_cc_no_pie in -no-pie -nopie no; do
5324 test $emacs_cv_prog_cc_no_pie = no && break
5325 LDFLAGS="$emacs_save_LDFLAGS $emacs_cv_prog_cc_no_pie"
5326 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [break])
5328 ac_c_werror_flag=$emacs_save_c_werror_flag
5329 LDFLAGS=$emacs_save_LDFLAGS])
5330 if test "$emacs_cv_prog_cc_no_pie" != no; then
5331 LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS $emacs_cv_prog_cc_no_pie"
5334 if test x$ac_enable_profiling != x ; then
5336 *freebsd | gnu-linux) ;;
5337 *) LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -pg" ;;
5341 LD_SWITCH_SYSTEM_TEMACS="$LDFLAGS_NOCOMBRELOC $LD_SWITCH_SYSTEM_TEMACS"
5343 AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
5345 ## Common for all window systems
5346 if test "$window_system" != "none"; then
5347 AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])
5348 AC_DEFINE(POLL_FOR_INPUT, 1, [Define if you poll periodically to detect C-g.])
5349 WINDOW_SYSTEM_OBJ="fontset.o fringe.o image.o"
5352 AC_SUBST(WINDOW_SYSTEM_OBJ)
5354 AH_TOP([/* GNU Emacs site configuration template file.
5356 Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2018
5357 Free Software Foundation, Inc.
5359 This file is part of GNU Emacs.
5361 GNU Emacs is free software: you can redistribute it and/or modify
5362 it under the terms of the GNU General Public License as published by
5363 the Free Software Foundation, either version 3 of the License, or (at
5364 your option) any later version.
5366 GNU Emacs is distributed in the hope that it will be useful,
5367 but WITHOUT ANY WARRANTY; without even the implied warranty of
5368 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5369 GNU General Public License for more details.
5371 You should have received a copy of the GNU General Public License
5372 along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
5375 /* No code in Emacs #includes config.h twice, but some bits of code
5376 intended to work with other packages as well (like gmalloc.c)
5377 think they can include it as many times as they like. */
5378 #ifndef EMACS_CONFIG_H
5379 #define EMACS_CONFIG_H
5382 AH_BOTTOM([#include <conf_post.h>
5384 #endif /* EMACS_CONFIG_H */
5393 #### Report on what we decided to do.
5394 #### Report GTK as a toolkit, even if it doesn't use Xt.
5395 #### It makes printing result more understandable as using GTK sets
5396 #### toolkit_scroll_bars to yes by default.
5397 if test "${HAVE_GTK}" = "yes"; then
5398 USE_X_TOOLKIT="$USE_GTK_TOOLKIT"
5401 if test $USE_ACL -ne 0; then
5402 ACL_SUMMARY="yes $LIB_ACL"
5407 emacs_standard_dirs='Standard dirs'
5409 Configured for '${canonical}'.
5411 Where should the build process find the source code? ${srcdir}
5412 What compiler should emacs be built with? ${CC} ${CFLAGS}
5413 Should Emacs use the GNU version of malloc? ${GNU_MALLOC}${GNU_MALLOC_reason}
5414 Should Emacs use a relocating allocator for buffers? ${REL_ALLOC}
5415 Should Emacs use mmap(2) for buffer allocation? $use_mmap_for_buffers
5416 What window system should Emacs use? ${window_system}
5417 What toolkit should Emacs use? ${USE_X_TOOLKIT}
5418 Where do we find X Windows header files? ${x_includes:-$emacs_standard_dirs}
5419 Where do we find X Windows libraries? ${x_libraries:-$emacs_standard_dirs}"])
5422 emacs_config_features=
5423 for opt in XAW3D XPM JPEG TIFF GIF PNG RSVG CAIRO IMAGEMAGICK SOUND GPM DBUS \
5424 GCONF GSETTINGS NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT \
5425 LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS X_TOOLKIT OLDXMENU X11 NS MODULES \
5426 THREADS XWIDGETS LIBSYSTEMD JSON CANNOT_DUMP LCMS2; do
5429 CANNOT_DUMP) eval val=\${$opt} ;;
5430 NOTIFY|ACL) eval val=\${${opt}_SUMMARY} ;;
5431 TOOLKIT_SCROLL_BARS|X_TOOLKIT) eval val=\${USE_$opt} ;;
5432 THREADS) val=${threads_enabled} ;;
5433 *) eval val=\${HAVE_$opt} ;;
5436 xno|xnone|x) continue ;;
5441 GTK*|LUCID|MOTIF) opt=$val ;;
5446 AS_VAR_APPEND([emacs_config_features], ["$optsep$opt"])
5449 AC_DEFINE_UNQUOTED(EMACS_CONFIG_FEATURES, "${emacs_config_features}",
5450 [Summary of some of the main features enabled by configure.])
5452 AS_ECHO([" Does Emacs use -lXaw3d? ${HAVE_XAW3D}
5453 Does Emacs use -lXpm? ${HAVE_XPM}
5454 Does Emacs use -ljpeg? ${HAVE_JPEG}
5455 Does Emacs use -ltiff? ${HAVE_TIFF}
5456 Does Emacs use a gif library? ${HAVE_GIF} $LIBGIF
5457 Does Emacs use a png library? ${HAVE_PNG} $LIBPNG
5458 Does Emacs use -lrsvg-2? ${HAVE_RSVG}
5459 Does Emacs use cairo? ${HAVE_CAIRO}
5460 Does Emacs use -llcms2? ${HAVE_LCMS2}
5461 Does Emacs use imagemagick (version 6)? ${HAVE_IMAGEMAGICK}
5462 Does Emacs support sound? ${HAVE_SOUND}
5463 Does Emacs use -lgpm? ${HAVE_GPM}
5464 Does Emacs use -ldbus? ${HAVE_DBUS}
5465 Does Emacs use -lgconf? ${HAVE_GCONF}
5466 Does Emacs use GSettings? ${HAVE_GSETTINGS}
5467 Does Emacs use a file notification library? ${NOTIFY_SUMMARY}
5468 Does Emacs use access control lists? ${ACL_SUMMARY}
5469 Does Emacs use -lselinux? ${HAVE_LIBSELINUX}
5470 Does Emacs use -lgnutls? ${HAVE_GNUTLS}
5471 Does Emacs use -lxml2? ${HAVE_LIBXML2}
5472 Does Emacs use -lfreetype? ${HAVE_FREETYPE}
5473 Does Emacs use -lm17n-flt? ${HAVE_M17N_FLT}
5474 Does Emacs use -lotf? ${HAVE_LIBOTF}
5475 Does Emacs use -lxft? ${HAVE_XFT}
5476 Does Emacs use -lsystemd? ${HAVE_LIBSYSTEMD}
5477 Does Emacs use -ljansson? ${HAVE_JSON}
5478 Does Emacs directly use zlib? ${HAVE_ZLIB}
5479 Does Emacs have dynamic modules support? ${HAVE_MODULES}
5480 Does Emacs use toolkit scroll bars? ${USE_TOOLKIT_SCROLL_BARS}
5481 Does Emacs support Xwidgets (requires gtk3)? ${HAVE_XWIDGETS}
5482 Does Emacs have threading support in lisp? ${threads_enabled}
5485 if test -n "${EMACSDATA}"; then
5486 AS_ECHO([" Environment variable EMACSDATA set to: $EMACSDATA"])
5488 if test -n "${EMACSDOC}"; then
5489 AS_ECHO([" Environment variable EMACSDOC set to: $EMACSDOC"])
5494 if test "$HAVE_NS" = "yes"; then
5496 AS_ECHO(["You must run \"${MAKE-make} install\" in order to test the built application.
5497 The installed application will go to nextstep/Emacs.app and can be
5498 run or moved from there."])
5499 if test "$EN_NS_SELF_CONTAINED" = "yes"; then
5500 echo "The application will be fully self-contained."
5502 AS_ECHO(["The lisp resources for the application will be installed under ${prefix}.
5503 You may need to run \"${MAKE-make} install\" with sudo. The application will fail
5504 to run if these resources are not installed."])
5509 case $opsys,$emacs_uname_r in
5511 AC_MSG_WARN([[building Emacs on Cygwin 1.5 is not supported.]])
5516 # Remove any trailing slashes in these variables.
5518 */) prefix=`AS_DIRNAME(["$prefix."])`;;
5520 case $exec_prefix in
5521 */) exec_prefix=`AS_DIRNAME(["$exec_prefix."])`;;
5524 if test "$HAVE_NS" = "yes"; then
5525 if test "$NS_IMPL_GNUSTEP" = yes; then
5526 AC_CONFIG_FILES([nextstep/GNUstep/Emacs.base/Resources/Info-gnustep.plist:nextstep/templates/Info-gnustep.plist.in \
5527 nextstep/GNUstep/Emacs.base/Resources/Emacs.desktop:nextstep/templates/Emacs.desktop.in])
5528 ns_check_file=Resources/Info-gnustep.plist
5530 AC_CONFIG_FILES([nextstep/Cocoa/Emacs.base/Contents/Info.plist:nextstep/templates/Info.plist.in \
5531 nextstep/Cocoa/Emacs.base/Contents/Resources/English.lproj/InfoPlist.strings:nextstep/templates/InfoPlist.strings.in])
5532 ns_check_file=Contents/Info.plist
5534 AC_SUBST(ns_check_file)
5537 AC_CONFIG_FILES([Makefile lib/gnulib.mk])
5539 dnl config.status treats $srcdir specially, so I think this is ok...
5540 AC_CONFIG_FILES([$srcdir/doc/man/emacs.1])
5542 m4_define([subdir_makefiles],
5543 [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])
5544 SUBDIR_MAKEFILES="subdir_makefiles"
5545 AC_CONFIG_FILES(subdir_makefiles)
5547 dnl test/ is not present in release tarfiles.
5548 opt_makefile=test/Makefile
5550 if test -f "$srcdir/$opt_makefile.in"; then
5551 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
5552 dnl Again, it's best not to use a variable. Though you can add
5553 dnl ", [], [opt_makefile='$opt_makefile']" and it should work.
5554 AC_CONFIG_FILES([test/Makefile])
5558 dnl The admin/ directory used to be excluded from tarfiles.
5559 if test -d $srcdir/admin; then
5560 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES admin/charsets/Makefile admin/unidata/Makefile admin/grammars/Makefile"
5561 AC_CONFIG_FILES([admin/charsets/Makefile])
5562 AC_CONFIG_FILES([admin/unidata/Makefile])
5563 AC_CONFIG_FILES([admin/grammars/Makefile])
5567 SUBDIR_MAKEFILES_IN=`echo " ${SUBDIR_MAKEFILES}" | sed -e 's| | $(srcdir)/|g' -e 's|Makefile|Makefile.in|g'`
5569 AC_SUBST(SUBDIR_MAKEFILES_IN)
5571 dnl You might wonder (I did) why epaths.h is generated by running make,
5572 dnl rather than just letting configure generate it from epaths.in.
5573 dnl One reason is that the various paths are not fully expanded (see above);
5574 dnl e.g., gamedir='${localstatedir}/games/emacs'.
5575 dnl Secondly, the GNU Coding standards require that one should be able
5576 dnl to run 'make prefix=/some/where/else' and override the values set
5577 dnl by configure. This also explains the 'move-if-change' test and
5578 dnl the use of force in the 'epaths-force' rule in Makefile.in.
5579 AC_CONFIG_COMMANDS([src/epaths.h], [
5580 if test "${opsys}" = "mingw32"; then
5581 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force-w32
5583 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force
5584 fi || AC_MSG_ERROR(['src/epaths.h' could not be made.])
5585 ], [GCC="$GCC" CPPFLAGS="$CPPFLAGS" opsys="$opsys"])
5587 dnl NB we have to cheat and use the ac_... version because abs_top_srcdir
5588 dnl is not yet set, sigh. Or we could use ../$srcdir/src/.gdbinit,
5590 AC_CONFIG_COMMANDS([src/.gdbinit], [
5591 if test ! -f src/.gdbinit && test -f "$srcdir/src/.gdbinit"; then
5592 AS_ECHO(["source $ac_abs_top_srcdir/src/.gdbinit"]) > src/.gdbinit
5596 dnl Perhaps this would be better named doc-emacs-emacsver.texi?
5597 dnl See comments for etc-refcards-emacsver.tex.
5598 dnl Since we get a doc/emacs directory generated anyway, for the Makefile,
5599 dnl it is not quite the same. But we are generating in $srcdir.
5600 AC_CONFIG_COMMANDS([doc/emacs/emacsver.texi], [
5601 ${MAKE-make} -s --no-print-directory -C doc/emacs doc-emacsver || \
5602 AC_MSG_ERROR(['doc/emacs/emacsver.texi' could not be made.])
5605 dnl If we give this the more natural name, etc/refcards/emacsver.texi,
5606 dnl then a directory etc/refcards is created in the build directory,
5607 dnl which is probably harmless, but confusing (in out-of-tree builds).
5608 dnl (If we were to generate etc/refcards/Makefile, this might change.)
5609 dnl It is really $srcdir/etc/refcards/emacsver.tex that we generate.
5610 AC_CONFIG_COMMANDS([etc-refcards-emacsver.tex], [
5611 ${MAKE-make} -s MAKEFILE_NAME=do-not-make-Makefile etc-emacsver || \
5612 AC_MSG_ERROR(['etc/refcards/emacsver.tex' could not be made.])
5615 if test $AUTO_DEPEND = yes; then
5616 for dir in $AUTODEPEND_PARENTS; do
5617 AS_MKDIR_P([$dir/deps])
5623 if test ! "$with_mailutils"; then
5624 if test "$with_pop" = yes; then
5625 AC_MSG_WARN([This configuration installs a 'movemail' program
5626 that retrieves POP3 email via only insecure channels.
5627 To omit insecure POP3, you can use '$0 --without-pop'.])
5628 elif test "$with_pop" = no-by-default; then
5629 AC_MSG_WARN([This configuration installs a 'movemail' program
5630 that does not retrieve POP3 email. By default, Emacs 25 and earlier
5631 installed a 'movemail' program that retrieved POP3 email via only
5632 insecure channels, a practice that is no longer recommended but that
5633 you can continue to support by using '$0 --with-pop'.])
5638 # Don't suggest GNU Mailutils, as it hasn't been ported.
5641 emacs_fix_movemail="use '$0 --with-mailutils'"
5642 case `(movemail --version) 2>/dev/null` in
5644 *) emacs_fix_movemail="install GNU Mailutils
5645 <https://mailutils.org> and $emacs_fix_movemail";;
5647 AC_MSG_NOTICE([You might want to $emacs_fix_movemail.]);;
5651 test "$MAKE" = make || AC_MSG_NOTICE([Now you can run '$MAKE'.])