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, 1999-2017 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)])],[],[with_gconf=maybe])
376 OPTION_DEFAULT_ON([gsettings],[don't compile with GSettings support])
377 OPTION_DEFAULT_ON([selinux],[don't compile with SELinux support])
378 OPTION_DEFAULT_ON([gnutls],[don't use -lgnutls for SSL/TLS support])
379 OPTION_DEFAULT_ON([zlib],[don't compile with zlib decompression support])
380 OPTION_DEFAULT_OFF([modules],[compile with dynamic modules support])
381 OPTION_DEFAULT_ON([threads],[don't compile with elisp threading support])
383 AC_ARG_WITH([file-notification],[AS_HELP_STRING([--with-file-notification=LIB],
384 [use a file notification library (LIB one of: yes, inotify, kqueue, gfile, w32, no)])],
385 [ case "${withval}" in
386 y | ye | yes ) val=yes ;;
388 i | in | ino | inot | inoti | inotif | inotify ) val=inotify ;;
389 k | kq | kqu | kque | kqueu | kqueue ) val=kqueue ;;
390 g | gf | gfi | gfil | gfile ) val=gfile ;;
391 w | w3 | w32 ) val=w32 ;;
392 * ) AC_MSG_ERROR(['--with-file-notification=$withval' is invalid;
393 this option's value should be 'yes', 'no', 'inotify', 'kqueue', 'gfile' or 'w32'.
394 'yes' is a synonym for 'w32' on MS-Windows, for 'no' on Nextstep,
395 otherwise for the first of 'inotify', 'kqueue' or 'gfile' that is usable.])
398 with_file_notification=$val
400 [with_file_notification=$with_features])
402 OPTION_DEFAULT_OFF([xwidgets],
403 [enable use of some gtk widgets in Emacs buffers (requires gtk3)])
405 ## For the times when you want to build Emacs but don't have
406 ## a suitable makeinfo, and can live without the manuals.
407 dnl https://lists.gnu.org/r/emacs-devel/2008-04/msg01844.html
408 OPTION_DEFAULT_ON([makeinfo],[don't require makeinfo for building manuals])
410 ## Makefile.in needs the cache file name.
413 ## This is an option because I do not know if all info/man support
414 ## compressed files, nor how to test if they do so.
415 OPTION_DEFAULT_ON([compress-install],
416 [don't compress some files (.el, .info, etc.) when installing. Equivalent to:
417 make GZIP_PROG= install])
419 AC_ARG_WITH(gameuser,dnl
420 [AS_HELP_STRING([--with-gameuser=USER_OR_GROUP],
421 [user for shared game score files.
422 An argument prefixed by ':' specifies a group instead.])])
425 case ${with_gameuser} in
427 yes) gamegroup=games ;;
428 :*) gamegroup=${with_gameuser#:} ;;
429 *) gameuser=${with_gameuser} ;;
432 AC_ARG_WITH([gnustep-conf],dnl
433 [AS_HELP_STRING([--with-gnustep-conf=FILENAME],
434 [name of GNUstep configuration file to use on systems where the command
435 'gnustep-config' does not work; default $GNUSTEP_CONFIG_FILE, or
436 /etc/GNUstep/GNUstep.conf])])
437 test "X${with_gnustep_conf}" != X && test "${with_gnustep_conf}" != yes && \
438 GNUSTEP_CONFIG_FILE="${with_gnustep_conf}"
439 test "X$GNUSTEP_CONFIG_FILE" = "X" && \
440 GNUSTEP_CONFIG_FILE=/etc/GNUstep/GNUstep.conf
442 AC_ARG_ENABLE(ns-self-contained,
443 [AS_HELP_STRING([--disable-ns-self-contained],
444 [disable self contained build under NeXTstep])],
445 EN_NS_SELF_CONTAINED=$enableval,
446 EN_NS_SELF_CONTAINED=yes)
449 AC_ARG_ENABLE(locallisppath,
450 [AS_HELP_STRING([--enable-locallisppath=PATH],
451 [directories Emacs should search for lisp files specific
453 if test "${enableval}" = "no"; then
455 elif test "${enableval}" != "yes"; then
456 locallisppath=${enableval} locallisppathset=yes
459 AC_ARG_ENABLE(checking,
460 [AS_HELP_STRING([--enable-checking@<:@=LIST@:>@],
461 [enable expensive run-time checks. With LIST,
462 enable only specific categories of checks.
463 Categories are: all,yes,no.
464 Flags are: stringbytes, stringoverrun, stringfreelist,
465 xmallocoverrun, conslist, glyphs])],
466 [ac_checking_flags="${enableval}"],[])
467 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
468 for check in $ac_checking_flags
471 # these set all the flags to specific states
472 yes) ac_enable_checking=1 ;;
473 no) ac_enable_checking= ;
474 ac_gc_check_stringbytes= ;
475 ac_gc_check_string_overrun= ;
476 ac_gc_check_string_free_list= ;
477 ac_xmalloc_overrun= ;
478 ac_gc_check_cons_list= ;
480 all) ac_enable_checking=1 ;
481 ac_gc_check_stringbytes=1 ;
482 ac_gc_check_string_overrun=1 ;
483 ac_gc_check_string_free_list=1 ;
484 ac_xmalloc_overrun=1 ;
485 ac_gc_check_cons_list=1 ;
487 # these enable particular checks
488 stringbytes) ac_gc_check_stringbytes=1 ;;
489 stringoverrun) ac_gc_check_string_overrun=1 ;;
490 stringfreelist) ac_gc_check_string_free_list=1 ;;
491 xmallocoverrun) ac_xmalloc_overrun=1 ;;
492 conslist) ac_gc_check_cons_list=1 ;;
493 glyphs) ac_glyphs_debug=1 ;;
494 *) AC_MSG_ERROR(unknown check category $check) ;;
499 if test x$ac_enable_checking != x ; then
500 AC_DEFINE(ENABLE_CHECKING, 1,
501 [Define to 1 if expensive run-time data type and consistency checks are enabled.])
503 if test x$ac_gc_check_stringbytes != x ; then
504 AC_DEFINE(GC_CHECK_STRING_BYTES, 1,
505 [Define this temporarily to hunt a bug. If defined, the size of
506 strings is redundantly recorded in sdata structures so that it can
507 be compared to the sizes recorded in Lisp strings.])
509 if test x$ac_gc_check_string_overrun != x ; then
510 AC_DEFINE(GC_CHECK_STRING_OVERRUN, 1,
511 [Define this to check for short string overrun.])
513 if test x$ac_gc_check_string_free_list != x ; then
514 AC_DEFINE(GC_CHECK_STRING_FREE_LIST, 1,
515 [Define this to check the string free list.])
517 if test x$ac_xmalloc_overrun != x ; then
518 AC_DEFINE(XMALLOC_OVERRUN_CHECK, 1,
519 [Define this to check for malloc buffer overrun.])
521 if test x$ac_gc_check_cons_list != x ; then
522 AC_DEFINE(GC_CHECK_CONS_LIST, 1,
523 [Define this to check for errors in cons list.])
525 if test x$ac_glyphs_debug != x ; then
526 AC_DEFINE(GLYPH_DEBUG, 1,
527 [Define this to enable glyphs debugging code.])
530 dnl The name of this option is unfortunate. It predates, and has no
531 dnl relation to, the "sampling-based elisp profiler" added in 24.3.
532 dnl Actually, it stops it working.
533 dnl https://lists.gnu.org/r/emacs-devel/2012-11/msg00393.html
534 AC_ARG_ENABLE(profiling,
535 [AS_HELP_STRING([--enable-profiling],
536 [build emacs with low-level, gprof profiling support.
537 Mainly useful for debugging Emacs itself. May not work on
538 all platforms. Stops profiler.el working.])],
539 [ac_enable_profiling="${enableval}"],[])
540 if test x$ac_enable_profiling != x ; then
541 PROFILING_CFLAGS="-DPROFILING=1 -pg"
545 AC_SUBST(PROFILING_CFLAGS)
547 AC_ARG_ENABLE(autodepend,
548 [AS_HELP_STRING([--enable-autodepend],
549 [automatically generate dependencies to .h-files.
550 Requires gcc, enabled if found.])],
551 [ac_enable_autodepend="${enableval}"],[ac_enable_autodepend=yes])
553 AC_ARG_ENABLE(gtk-deprecation-warnings,
554 [AS_HELP_STRING([--enable-gtk-deprecation-warnings],
555 [Show Gtk+/Gdk deprecation warnings for Gtk+ >= 3.0])],
556 [ac_enable_gtk_deprecation_warnings="${enableval}"],[])
559 AC_ARG_ENABLE([build-details],
560 [AS_HELP_STRING([--disable-build-details],
561 [Make the build more deterministic by omitting host
562 names, time stamps, etc. from the output.])],
563 [test "$enableval" = no && BUILD_DETAILS=--no-build-details])
564 AC_SUBST([BUILD_DETAILS])
566 dnl This used to use changequote, but, apart from 'changequote is evil'
567 dnl per the autoconf manual, we can speed up autoconf somewhat by quoting
568 dnl the great gob of text. Thus it's not processed for possible expansion.
569 dnl Just make sure the brackets remain balanced.
571 dnl Since Emacs can't find matching pairs of quotes, boundaries are
572 dnl indicated by comments.
576 ### If you add support for a new configuration, add code to this
577 ### switch statement to recognize your configuration name and select
578 ### the appropriate opsys.
580 ### As far as handling version numbers on operating systems is
581 ### concerned, make sure things will fail in a fixable way. If
582 ### /etc/MACHINES doesn't say anything about version numbers, be
583 ### prepared to handle anything reasonably. If version numbers
584 ### matter, be sure /etc/MACHINES says something about it.
587 case "${canonical}" in
589 ## GNU/Linux and similar ports
604 ## FreeBSD kernel + glibc based userland
615 *-*-openbsd* | *-*-mirbsd* )
619 ## Apple Darwin / macOS
621 case "${canonical}" in
622 *-apple-darwin[0-9].*) unported=yes ;;
623 i[3456]86-* | x86_64-* ) ;;
627 ## FIXME: Find a way to use Fink if available (Bug#11507).
630 ## Chromium Native Client
640 ## HP 9000 series 700 and 800, running HP/UX
644 hppa*-hp-hpux1[1-9]* )
646 CFLAGS="-D_INCLUDE__STDC_A1_SOURCE $CFLAGS"
650 rs6000-ibm-aix4.[23]* )
653 powerpc-ibm-aix4.[23]* )
656 rs6000-ibm-aix[56]* )
659 powerpc-ibm-aix[5-9]* | powerpc-ibm-aix[1-9][0-9]* )
665 | i[3456]86-*-solaris2* | i[3456]86-*-sunos5* \
666 | x86_64-*-solaris2* | x86_64-*-sunos5*)
667 case "${canonical}" in
669 amd64-*-*|x86_64-*-*) ;;
673 case "${canonical}" in
674 *-sunos5.[1-9][0-9]* | *-solaris2.[1-9][0-9]* )
676 emacs_check_sunpro_c=yes
678 *-sunos5.[1-5]* | *-solaris2.[1-5]* ) unported=yes ;;
679 ## Note that Emacs 23.1's NEWS said the following would be dropped.
680 *-sunos5.6* | *-solaris2.6* )
684 ## 5.7 EOL Aug 2008, 5.8 EOL Mar 2012.
685 *-sunos5.[7-9]* | *-solaris2.[7-9]* )
687 emacs_check_sunpro_c=yes
690 ## Watch out for a compiler that we know will not work.
691 case "${canonical}" in
692 *-solaris* | *-sunos5* )
693 if [ "x$CC" = x/usr/ucb/cc ]; then
694 ## /usr/ucb/cc doesn't work;
695 ## we should find some other compiler that does work.
706 test -z "$CC" && CC=qcc
707 CFLAGS="$CFLAGS -D__NO_EXT_QNX"
708 LDFLAGS="-N2MB $LDFLAGS"
711 ## Intel 386 machines where we don't care about the manufacturer.
713 case "${canonical}" in
714 *-darwin* ) opsys=darwin ;;
717 # MinGW overrides and adds some system headers in nt/inc.
718 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
720 *-sysv4.2uw* ) opsys=unixware ;;
721 *-sysv5uw* ) opsys=unixware ;;
722 *-sysv5OpenUNIX* ) opsys=unixware ;;
723 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
729 case "${canonical}" in
732 # MinGW overrides and adds some system headers in nt/inc.
733 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
735 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
744 ### If the code above didn't choose an operating system, just choose
745 ### an operating system based on the configuration name. You really
746 ### only want to use this when you have no idea what the right
747 ### operating system is; if you know what operating systems a machine
748 ### runs, it's cleaner to make it explicit in the case statement
750 if test x"${opsys}" = x; then
751 case "${canonical}" in
752 *-gnu* ) opsys=gnu ;;
762 if test $unported = yes; then
763 AC_MSG_ERROR([Emacs does not support '${canonical}' systems.
764 If you think it should, please send a report to ${PACKAGE_BUGREPORT}.
765 Check 'etc/MACHINES' for recognized configuration names.])
768 #### Choose a compiler.
770 dnl Don't bother to test for C89.
771 AC_DEFUN([_AC_PROG_CC_C89], [$2])
773 dnl Sets GCC=yes if using gcc.
774 AC_PROG_CC([gcc cc cl clang "$XCRUN gcc" "$XCRUN clang"])
775 if test -n "$XCRUN"; then
776 AC_CHECK_PROGS(AR, [ar "$XCRUN ar"])
777 test -n "$AR" && export AR
780 dnl Emacs needs C99 or later.
785 if test x$GCC = xyes; then
786 test "x$GCC_TEST_OPTIONS" != x && CC="$CC $GCC_TEST_OPTIONS"
789 # Avoid gnulib's tests for -lcrypto, so that there's no static dependency on it.
790 AC_DEFUN([gl_CRYPTO_CHECK])
791 # Avoid gnulib's tests for HAVE_WORKING_O_NOATIME and HAVE_WORKING_O_NOFOLLOW,
792 # as we don't use them.
793 AC_DEFUN([gl_FCNTL_O_FLAGS])
794 # Avoid gnulib's test for pthread_sigmask.
796 for func in $ac_func_list; do
797 test $func = pthread_sigmask || AS_VAR_APPEND([funcs], [" $func"])
800 # Use the system putenv even if it lacks GNU features, as we don't need them,
801 # and the gnulib replacement runs afoul of a FreeBSD 10.1 bug; see Bug#19874.
802 AC_CHECK_FUNCS_ONCE([putenv])
803 AC_DEFUN([gl_FUNC_PUTENV],
804 [test "$ac_cv_func_putenv" = yes || REPLACE_PUTENV=1])
805 # Emacs does not use the wchar or wctype-h modules.
806 AC_DEFUN([gt_TYPE_WINT_T],
807 [GNULIB_OVERRIDES_WINT_T=0
808 AC_SUBST([GNULIB_OVERRIDES_WINT_T])])
810 # Initialize gnulib right after choosing the compiler.
811 dnl Amongst other things, this sets AR and ARFLAGS.
814 if test "$ac_test_CFLAGS" != set; then
815 # It's helpful to have C macros available to GDB, so prefer -g3 to -g
816 # if -g3 works and the user does not specify CFLAGS.
817 # This test must follow gl_EARLY; otherwise AC_LINK_IFELSE complains.
820 emacs_g3_CFLAGS='-g3';;
822 emacs_g3_CFLAGS='-g3 -O2';;
826 if test -n "$emacs_g3_CFLAGS"; then
827 emacs_save_CFLAGS=$CFLAGS
828 CFLAGS=$emacs_g3_CFLAGS
829 AC_CACHE_CHECK([whether $CC accepts $emacs_g3_CFLAGS],
830 [emacs_cv_prog_cc_g3],
831 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
832 [emacs_cv_prog_cc_g3=yes],
833 [emacs_cv_prog_cc_g3=no])])
834 if test $emacs_cv_prog_cc_g3 != yes; then
835 CFLAGS=$emacs_save_CFLAGS
837 if test $opsys = mingw32; then
838 CFLAGS="$CFLAGS -gdwarf-2"
845 # No optimization flag was inferred for this non-GCC compiler.
846 # Try -O. This is needed for xlc on AIX; see Bug#14258.
847 emacs_save_CFLAGS=$CFLAGS
848 test -z "$CFLAGS" || CFLAGS="$CFLAGS "
850 AC_CACHE_CHECK([whether $CC accepts -O],
851 [emacs_cv_prog_cc_o],
852 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
853 [emacs_cv_prog_cc_o=yes],
854 [emacs_cv_prog_cc_o=no])])
855 if test $emacs_cv_prog_cc_o != yes; then
856 CFLAGS=$emacs_save_CFLAGS
861 # gl_GCC_VERSION_IFELSE([major], [minor], [run-if-found], [run-if-not-found])
862 # ---------------------------------------------------------------------------
863 # If $CPP is gcc-MAJOR.MINOR or newer, then run RUN-IF-FOUND.
864 # Otherwise, run RUN-IF-NOT-FOUND.
865 AC_DEFUN([gl_GCC_VERSION_IFELSE],
869 #if ($1) < __GNUC__ || (($1) == __GNUC__ && ($2) <= __GNUC_MINOR__)
872 # error "your version of gcc is older than $1.$2"
879 AC_ARG_ENABLE([gcc-warnings],
880 [AS_HELP_STRING([--enable-gcc-warnings@<:@=TYPE@:>@],
881 [control generation of GCC warnings. The TYPE 'yes'
882 means to fail if any warnings are issued; 'warn-only'
883 means issue warnings without failing (default for
884 developer builds); 'no' means disable warnings
885 (default for non-developer builds).])],
888 *) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
890 gl_gcc_warnings=$enableval],
891 [# By default, use 'warn-only' if it looks like the invoker of 'configure'
892 # is a developer as opposed to a builder. This is most likely true
893 # if GCC is recent enough and there is a .git directory or file;
894 # however, if there is also a .tarball-version file it is probably
895 # just a release imported into Git for patch management.
897 if test -e "$srcdir"/.git && test ! -f "$srcdir"/.tarball-version; then
898 gl_GCC_VERSION_IFELSE([5], [3], [gl_gcc_warnings=warn-only])
901 AC_ARG_ENABLE([check-lisp-object-type],
902 [AS_HELP_STRING([--enable-check-lisp-object-type],
903 [Enable compile-time checks for the Lisp_Object data type,
904 which can catch some bugs during development.
905 The default is "no" if --enable-gcc-warnings is "no".])])
906 if test "${enable_check_lisp_object_type-$gl_gcc_warnings}" != "no"; then
907 AC_DEFINE([CHECK_LISP_OBJECT_TYPE], 1,
908 [Define to enable compile-time checks for the Lisp_Object data type.])
911 # clang is unduly picky about some things.
912 AC_CACHE_CHECK([whether the compiler is clang], [emacs_cv_clang],
919 [emacs_cv_clang=yes],
920 [emacs_cv_clang=no])])
923 # When compiling with GCC, prefer -isystem to -I when including system
924 # include files, to avoid generating useless diagnostics for the files.
925 AS_IF([test $gl_gcc_warnings = no],
928 AS_IF([test "$emacs_cv_clang" = yes],
930 # Turn off some warnings if supported.
931 gl_WARN_ADD([-Wno-switch])
932 gl_WARN_ADD([-Wno-pointer-sign])
933 gl_WARN_ADD([-Wno-string-plus-int])
934 gl_WARN_ADD([-Wno-unknown-attributes])
939 # This, $nw, is the list of warnings we disable.
942 case $with_x_toolkit in
943 lucid | athena | motif)
944 # Old toolkits mishandle 'const'.
945 nw="$nw -Wwrite-strings"
948 AS_IF([test $gl_gcc_warnings = yes],
949 [WERROR_CFLAGS=-Werror])
951 nw="$nw -Wduplicated-branches" # Too many false alarms
952 nw="$nw -Wformat-overflow=2" # False alarms due to GCC bug 80776
953 nw="$nw -Wsystem-headers" # Don't let system headers trigger warnings
954 nw="$nw -Woverlength-strings" # Not a problem these days
955 nw="$nw -Wformat-nonliteral" # we do this a lot
956 nw="$nw -Wvla" # Emacs uses <vla.h>.
957 nw="$nw -Wswitch-default" # Too many warnings for now
958 nw="$nw -Wunused-const-variable=2" # lisp.h declares const objects.
959 nw="$nw -Winline" # OK to ignore 'inline'
960 nw="$nw -Wstrict-overflow" # OK to optimize assuming that
961 # signed overflow has undefined behavior
962 nw="$nw -Wsync-nand" # irrelevant here, and provokes ObjC warning
963 nw="$nw -Wunsafe-loop-optimizations" # OK to suppress unsafe optimizations
964 nw="$nw -Wbad-function-cast" # These casts are no worse than others.
966 # Emacs doesn't care about shadowing; see
967 # <https://lists.gnu.org/r/emacs-diffs/2011-11/msg00265.html>.
970 # Emacs's use of alloca inhibits protecting the stack.
971 nw="$nw -Wstack-protector"
973 # Emacs's use of partly-const functions such as Fgnutls_available_p
974 # make this option problematic.
975 nw="$nw -Wsuggest-attribute=const"
977 # Emacs's use of partly-pure functions such as CHECK_TYPE make this
978 # option problematic.
979 nw="$nw -Wsuggest-attribute=pure"
981 # This part is merely for shortening the command line,
982 # since -Wall implies -Wswitch.
985 # This part is merely for shortening the command line,
986 # since -Wno-FOO needs to be added below regardless.
987 nw="$nw -Wmissing-field-initializers"
988 nw="$nw -Woverride-init"
989 nw="$nw -Wtype-limits"
990 nw="$nw -Wunused-parameter"
992 if test "$emacs_cv_clang" = yes; then
993 nw="$nw -Wcast-align"
994 nw="$nw -Wdouble-promotion"
995 nw="$nw -Wmissing-braces"
998 # These cause too much noise in the MinGW build
999 if test $opsys = mingw32; then
1000 nw="$nw -Wpointer-sign"
1001 nw="$nw -Wsuggest-attribute=format"
1004 gl_MANYWARN_ALL_GCC([ws])
1005 gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
1009 gl_WARN_ADD([-Wredundant-decls]) # Prefer this, as we don't use Bison.
1010 gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
1011 gl_WARN_ADD([-Wno-override-init]) # More trouble than it is worth
1012 gl_WARN_ADD([-Wno-sign-compare]) # Too many warnings for now
1013 gl_WARN_ADD([-Wno-type-limits]) # Too many warnings for now
1014 gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
1015 gl_WARN_ADD([-Wno-format-nonliteral])
1017 # clang is unduly picky about braces.
1018 if test "$emacs_cv_clang" = yes; then
1019 gl_WARN_ADD([-Wno-missing-braces])
1022 # This causes too much noise in the MinGW build
1023 if test $opsys = mingw32; then
1024 gl_WARN_ADD([-Wno-pointer-sign])
1027 AC_DEFINE([GCC_LINT], [1], [Define to 1 if --enable-gcc-warnings.])
1028 AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
1029 AH_VERBATIM([GNULIB_PORTCHECK_FORTIFY_SOURCE],
1030 [/* Enable compile-time and run-time bounds-checking, and some warnings,
1031 without upsetting glibc 2.15+. */
1032 #if (defined GNULIB_PORTCHECK && !defined _FORTIFY_SOURCE \
1033 && defined __OPTIMIZE__ && __OPTIMIZE__)
1034 # define _FORTIFY_SOURCE 2
1039 # clang is picky about these regardless of whether
1040 # --enable-gcc-warnings is specified.
1041 if test "$emacs_cv_clang" = yes; then
1042 gl_WARN_ADD([-Wno-initializer-overrides])
1043 gl_WARN_ADD([-Wno-tautological-compare])
1044 gl_WARN_ADD([-Wno-tautological-constant-out-of-range-compare])
1047 # Use a slightly smaller set of warning options for lib/.
1049 nw="$nw -Wunused-macros"
1050 gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
1052 AC_SUBST([WERROR_CFLAGS])
1053 AC_SUBST([GNULIB_WARN_CFLAGS])
1062 AC_ARG_ENABLE(link-time-optimization,
1063 [AS_HELP_STRING([--enable-link-time-optimization],
1064 [build with link-time optimization
1065 (experimental; see INSTALL)])],
1066 if test "${enableval}" != "no"; then
1068 if test "$emacs_cv_clang" = yes; then
1069 AC_MSG_CHECKING([whether link-time optimization is supported by clang])
1070 GOLD_PLUGIN=`$CC -print-file-name=LLVMgold.so 2>/dev/null`
1071 if test -x "$GOLD_PLUGIN"; then
1074 elif test x$GCC = xyes; then
1075 AC_MSG_CHECKING([whether link-time optimization is supported by gcc])
1076 CPUS=`getconf _NPROCESSORS_ONLN 2>/dev/null`
1077 if test x$CPUS != x; then
1083 AC_MSG_ERROR([Link-time optimization is not supported with your compiler.])
1085 if test -z "$LTO"; then
1089 CFLAGS="$CFLAGS $LTO"
1090 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1091 [ac_lto_supported=yes], [ac_lto_supported=no])
1092 CFLAGS="$old_CFLAGS"
1094 AC_MSG_RESULT([$ac_lto_supported])
1095 if test "$ac_lto_supported" = "yes"; then
1096 CFLAGS="$CFLAGS $LTO"
1097 if test "$emacs_cv_clang" = yes; then
1098 AC_MSG_WARN([Please read INSTALL before using link-time optimization with clang])
1099 # WARNING: 'ar --plugin ...' doesn't work without
1100 # command, so plugin name is appended to ARFLAGS.
1101 ARFLAGS="cru --plugin $GOLD_PLUGIN"
1102 RANLIB="$RANLIB --plugin $GOLD_PLUGIN"
1104 dnl The following is needed for GCC 4.9.0. The GCC 4.9.0 release notes
1105 dnl suggest that instead of -ffat-lto-objects we should use gcc-ar and
1106 dnl gcc-ranlib in place of ar and ranlib, but gcc-ar makes /usr/bin/ar
1107 dnl dump core on Fedora 20, so play it safe for now.
1108 gl_COMPILER_OPTION_IF([-ffat-lto-objects],
1109 [CFLAGS="$CFLAGS -ffat-lto-objects"])
1115 dnl Automake replacements.
1116 AC_DEFUN([AM_CONDITIONAL],
1120 dnl Prefer silent make output. For verbose output, use
1121 dnl 'configure --disable-silent-rules' or 'make V=1' .
1122 dnl This code is adapted from Automake.
1123 dnl Although it can be simplified now that GNU Make is assumed,
1124 dnl the simplification hasn't been done yet.
1125 AC_ARG_ENABLE([silent-rules],
1127 [--disable-silent-rules],
1128 [verbose build output (undo: "make V=0")])])
1129 if test "$enable_silent_rules" = no; then
1130 AM_DEFAULT_VERBOSITY=1
1132 AM_DEFAULT_VERBOSITY=0
1135 AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
1137 AC_SUBST([AM_DEFAULT_V])
1138 AC_SUBST([AM_DEFAULT_VERBOSITY])
1140 dnl Some other nice autoconf tests.
1142 dnl These are commented out, since gl_EARLY and/or Autoconf already does them.
1144 dnl if test "x$RANLIB" = x; then
1149 dnl Sadly, AC_PROG_LN_S is too restrictive. It also tests whether links
1150 dnl can be made to directories. This is not relevant for our usage, and
1151 dnl excludes some cases that work fine for us. Eg MS Windows or files
1152 dnl hosted on AFS, both examples where simple links work, but links to
1153 dnl directories fail. We use a cut-down version instead.
1156 AC_CACHE_CHECK([command to symlink files in the same directory], [emacs_cv_ln_s_fileonly],
1157 [rm -f conf$$ conf$$.file
1159 emacs_cv_ln_s_fileonly='cp -p'
1161 dnl On MinGW, ensure we will call the MSYS /bin/ln.exe, not some
1162 dnl random program in the current directory.
1163 if (echo >conf$$.file) 2>/dev/null; then
1164 if ln -s conf$$.file conf$$ 2>/dev/null; then
1165 if test "$opsys" = "mingw32"; then
1166 emacs_cv_ln_s_fileonly='/bin/ln -s'
1168 emacs_cv_ln_s_fileonly='ln -s'
1170 elif ln conf$$.file conf$$ 2>/dev/null; then
1171 if test "$opsys" = "mingw32"; then
1172 emacs_cv_ln_s_fileonly=/bin/ln
1174 emacs_cv_ln_s_fileonly=ln
1179 rm -f conf$$ conf$$.file])
1180 LN_S_FILEONLY=$emacs_cv_ln_s_fileonly
1182 AC_SUBST(LN_S_FILEONLY)
1185 dnl AC_PROG_LN_S sets LN_S to 'cp -pR' for MinGW, on the premise that 'ln'
1186 dnl doesn't support links to directories, as in "ln file dir". But that
1187 dnl use is non-portable, and OTOH MinGW wants to use hard links for Emacs
1188 dnl executables at "make install" time.
1189 dnl See https://lists.gnu.org/r/emacs-devel/2013-04/msg00475.html
1190 dnl for more details.
1191 if test "$opsys" = "mingw32"; then
1195 dnl On some Debian versions, "install-info" prints irritating messages
1196 dnl "This is not dpkg install-info anymore, but GNU install-info"
1197 dnl if called via an absolute file name.
1198 dnl Use the entirely-identical-but-quieter ginstall-info instead if present.
1199 dnl Sadly some people may have an old ginstall-info installed on
1200 dnl non-Debian systems, so we can't use this.
1201 dnl AC_PATH_PROGS(INSTALL_INFO, [ginstall-info install-info], :,
1202 dnl $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1204 AC_PATH_PROG(INSTALL_INFO, install-info, :,
1205 $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1206 dnl Don't use GZIP, which is used by gzip for additional parameters.
1207 AC_PATH_PROG(GZIP_PROG, gzip)
1209 test $with_compress_install != yes && test -n "$GZIP_PROG" && \
1210 GZIP_PROG=" # $GZIP_PROG # (disabled by configure --without-compress-install)"
1212 AC_CACHE_CHECK([for 'find' args to delete a file],
1213 [emacs_cv_find_delete],
1214 [if touch conftest.tmp && find conftest.tmp -delete 2>/dev/null &&
1215 test ! -f conftest.tmp
1216 then emacs_cv_find_delete="-delete"
1217 else emacs_cv_find_delete="-exec rm -f {} ';'"
1219 FIND_DELETE=$emacs_cv_find_delete
1220 AC_SUBST([FIND_DELETE])
1224 if test $opsys = gnu-linux; then
1225 if test "${SETFATTR+set}" != set; then
1226 AC_CACHE_CHECK([for setfattr],
1227 [emacs_cv_prog_setfattr],
1229 if (setfattr -n user.pax.flags conftest.tmp) >/dev/null 2>&1; then
1230 emacs_cv_prog_setfattr=yes
1232 emacs_cv_prog_setfattr=no
1234 if test "$emacs_cv_prog_setfattr" = yes; then
1235 PAXCTL_notdumped='$(SETFATTR) -n user.pax.flags -v er'
1241 AC_SUBST([SETFATTR])
1244 case $opsys,$PAXCTL_notdumped,$emacs_uname_r in
1245 gnu-linux,,* | netbsd,,[0-7].*)
1246 AC_PATH_PROG([PAXCTL], [paxctl], [],
1247 [$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR/usr/sbin])
1248 if test -n "$PAXCTL"; then
1249 if test "$opsys" = netbsd; then
1250 PAXCTL_dumped='$(PAXCTL) +a'
1251 PAXCTL_notdumped=$PAXCTL_dumped
1253 AC_MSG_CHECKING([whether binaries have a PT_PAX_FLAGS header])
1254 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1255 [if $PAXCTL -v conftest$EXEEXT >/dev/null 2>&1; then
1256 AC_MSG_RESULT([yes])
1261 if test -n "$PAXCTL"; then
1262 PAXCTL_dumped='$(PAXCTL) -zex'
1263 PAXCTL_notdumped='$(PAXCTL) -r'
1268 AC_SUBST([PAXCTL_dumped])
1269 AC_SUBST([PAXCTL_notdumped])
1271 ## Require makeinfo >= 4.13 (last of the 4.x series) to build the manuals.
1272 if test "${MAKEINFO:=makeinfo}" != "no"; then
1273 case `($MAKEINFO --version) 2>/dev/null` in
1274 *' (GNU texinfo) '4.1[[3-9]]* | \
1275 *' (GNU texinfo) '[[5-9]]* | \
1276 *' (GNU texinfo) '[[1-9][0-9]]* ) ;;
1281 ## Makeinfo is unusual. For a released Emacs, the manuals are
1282 ## pre-built, and not deleted by the normal clean rules. makeinfo is
1283 ## therefore in the category of "special tools" not normally required, which
1284 ## configure does not have to check for (eg autoconf itself).
1285 ## In a repository checkout on the other hand, the manuals are not included.
1286 ## So makeinfo is a requirement to build from the repository, and configure
1287 ## should test for it as it does for any other build requirement.
1288 ## We use the presence of $srcdir/info/emacs to distinguish a release,
1289 ## with pre-built manuals, from a repository checkout.
1292 if test "$MAKEINFO" = "no"; then
1294 if test "x${with_makeinfo}" = "xno"; then
1296 elif test ! -e "$srcdir/info/emacs" && test ! -e "$srcdir/info/emacs.info"; then
1297 AC_MSG_ERROR( [You do not seem to have makeinfo >= 4.13, and your
1298 source tree does not seem to have pre-built manuals in the 'info' directory.
1299 Either install a suitable version of makeinfo, or re-run configure
1300 with the '--without-makeinfo' option to build without the manuals.] )
1303 AC_SUBST([MAKEINFO])
1304 AC_SUBST(HAVE_MAKEINFO)
1306 if test $opsys = mingw32; then
1307 DOCMISC_W32=efaq-w32
1311 AC_SUBST(DOCMISC_W32)
1313 dnl Add our options to ac_link now, after it is set up.
1315 if test x$GCC = xyes; then
1316 test "x$GCC_LINK_TEST_OPTIONS" != x && \
1317 ac_link="$ac_link $GCC_LINK_TEST_OPTIONS"
1319 test "x$NON_GCC_LINK_TEST_OPTIONS" != x && \
1320 ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
1323 dnl We need -znocombreloc if we're using a relatively recent GNU ld.
1324 dnl If we can link with the flag, it shouldn't do any harm anyhow.
1325 dnl Treat GCC specially since it just gives a non-fatal 'unrecognized option'
1326 dnl if not built to support GNU ld.
1328 dnl For a long time, -znocombreloc was added to LDFLAGS rather than
1329 dnl LD_SWITCH_SYSTEM_TEMACS. That is:
1330 dnl * inappropriate, as LDFLAGS is a user option but this is essential.
1331 dnl Eg "make LDFLAGS=... all" could run into problems,
1332 dnl https://bugs.debian.org/684788
1333 dnl * unnecessary, since temacs is the only thing that actually needs it.
1334 dnl Indeed this is where it was originally, prior to:
1335 dnl https://lists.gnu.org/r/emacs-pretest-bug/2004-03/msg00170.html
1336 if test x$GCC = xyes; then
1337 LDFLAGS_NOCOMBRELOC="-Wl,-znocombreloc"
1339 LDFLAGS_NOCOMBRELOC="-znocombreloc"
1342 AC_CACHE_CHECK([for -znocombreloc], [emacs_cv_znocombreloc],
1343 [late_LDFLAGS="$LDFLAGS"
1344 LDFLAGS="$LDFLAGS $LDFLAGS_NOCOMBRELOC"
1346 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1347 [emacs_cv_znocombreloc=yes], [emacs_cv_znocombreloc=no])
1349 LDFLAGS="$late_LDFLAGS"])
1351 if test x$emacs_cv_znocombreloc = xno; then
1352 LDFLAGS_NOCOMBRELOC=
1356 AC_CACHE_CHECK([whether addresses are sanitized],
1357 [emacs_cv_sanitize_address],
1360 [[#ifndef __has_feature
1361 #define __has_feature(f) 0
1363 #if defined __SANITIZE_ADDRESS__ || __has_feature (address_sanitizer)
1365 error "Addresses are not sanitized.";
1368 [emacs_cv_sanitize_address=yes],
1369 [emacs_cv_sanitize_address=no])])
1371 dnl The function dump-emacs will not be defined and temacs will do
1372 dnl (load "loadup") automatically unless told otherwise.
1373 test "x$CANNOT_DUMP" = "x" && CANNOT_DUMP=no
1375 nacl) CANNOT_DUMP=yes ;;
1378 if test "$CANNOT_DUMP" = "yes"; then
1379 AC_DEFINE(CANNOT_DUMP, 1, [Define if Emacs cannot be dumped on your system.])
1380 elif test "$emacs_cv_sanitize_address" = yes; then
1381 AC_MSG_WARN([[Addresses are sanitized; suggest CANNOT_DUMP=yes]])
1384 AC_SUBST(CANNOT_DUMP)
1387 UNEXEC_OBJ=unexelf.o
1389 # MSDOS uses unexcoff.o
1391 UNEXEC_OBJ=unexaix.o
1397 UNEXEC_OBJ=unexmacosx.o
1400 UNEXEC_OBJ=unexhp9k800.o
1403 UNEXEC_OBJ=unexw32.o
1406 # Use the Solaris dldump() function, called from unexsol.c, to dump
1407 # emacs, instead of the generic ELF dump code found in unexelf.c.
1408 # The resulting binary has a complete symbol table, and is better
1409 # for debugging and other observability tools (debuggers, pstack, etc).
1411 # It is likely that dldump() works with older Solaris too, but this has
1412 # not been tested, so for now this change is for Solaris 10 or newer.
1413 UNEXEC_OBJ=unexsol.o
1416 test "$CANNOT_DUMP" = "yes" && UNEXEC_OBJ=
1421 ## Let 'ld' find image libs and similar things in /usr/local/lib.
1422 ## The system compiler, GCC, has apparently been modified to not
1423 ## look there, contrary to what a stock GCC would do.
1424 ### It's not our place to do this. See bug#10313#17.
1425 ### LD_SWITCH_SYSTEM=-L/usr/local/lib
1430 ## cpp test was "ifdef __mips__", but presumably this is equivalent...
1431 case $host_cpu in mips*) LD_SWITCH_SYSTEM="-G 0";; esac
1435 ### It's not our place to do this. See bug#10313#17.
1436 ### LD_SWITCH_SYSTEM="-Wl,-rpath,/usr/pkg/lib -L/usr/pkg/lib -Wl,-rpath,/usr/local/lib -L/usr/local/lib"
1441 ## Han Boetes <han@boetes.org> says this is necessary,
1442 ## otherwise Emacs dumps core on elf systems.
1443 LD_SWITCH_SYSTEM="-Z"
1446 AC_SUBST(LD_SWITCH_SYSTEM)
1448 ac_link="$ac_link $LD_SWITCH_SYSTEM"
1450 ## This setting of LD_SWITCH_SYSTEM references LD_SWITCH_X_SITE_RPATH,
1451 ## which has not been defined yet. When this was handled with cpp,
1452 ## it was expanded to null when configure sourced the s/*.h file.
1453 ## Thus LD_SWITCH_SYSTEM had different values in configure and the Makefiles.
1454 ## FIXME it would be cleaner to put this in LD_SWITCH_SYSTEM_TEMACS
1455 ## (or somesuch), but because it is supposed to go at the _front_
1456 ## of LD_SWITCH_SYSTEM, we cannot do that in exactly the same way.
1457 ## Compare with the gnu-linux case below, which added to the end
1458 ## of LD_SWITCH_SYSTEM, and so can instead go at the front of
1459 ## LD_SWITCH_SYSTEM_TEMACS.
1462 LD_SWITCH_SYSTEM="\$(LD_SWITCH_X_SITE_RPATH) $LD_SWITCH_SYSTEM" ;;
1469 AC_CHECK_DECL([__ELF__])
1470 if test "$ac_cv_have_decl___ELF__" = "yes"; then
1471 ## With ELF, make sure that all common symbols get allocated to in the
1472 ## data section. Otherwise, the dump of temacs may miss variables in
1473 ## the shared library that have been initialized. For example, with
1474 ## GNU libc, __malloc_initialized would normally be resolved to the
1475 ## shared library's .bss section, which is fatal.
1476 if test "x$GCC" = "xyes"; then
1477 C_SWITCH_MACHINE="-fno-common"
1479 AC_MSG_ERROR([Non-GCC compilers are not supported.])
1482 dnl This was the unexalpha.c case. Removed in 24.1, 2010-07-24,
1483 dnl albeit under the mistaken assumption that said file
1484 dnl was no longer used.
1485 AC_MSG_ERROR([Non-ELF systems are not supported since Emacs 24.1.])
1489 AC_SUBST(C_SWITCH_MACHINE)
1491 AC_SUBST(UNEXEC_OBJ)
1494 ## Some programs in src produce warnings saying certain subprograms
1495 ## are too complex and need a MAXMEM value greater than 2000 for
1496 ## additional optimization. --nils@exp-math.uni-essen.de
1497 test "$opsys" = "aix4.2" && test "x$GCC" != "xyes" && \
1498 C_SWITCH_SYSTEM="-ma -qmaxmem=4000"
1499 if test "$opsys" = "mingw32"; then
1500 case "$canonical" in
1501 x86_64-*-mingw*) C_SWITCH_SYSTEM="-mtune=generic" ;;
1502 *) C_SWITCH_SYSTEM="-mtune=pentium4" ;;
1505 ## gnu-linux might need -D_BSD_SOURCE on old libc5 systems.
1506 ## It is redundant in glibc2, since we define _GNU_SOURCE.
1507 AC_SUBST(C_SWITCH_SYSTEM)
1512 ## IBM's X11R5 uses -lIM and -liconv in AIX 3.2.2.
1513 aix4-2) LIBS_SYSTEM="-lrts -lIM -liconv" ;;
1515 freebsd|dragonfly) LIBS_SYSTEM="-lutil" ;;
1517 hpux*) LIBS_SYSTEM="-l:libdld.sl" ;;
1519 qnxnto) LIBS_SYSTEM="-lsocket" ;;
1521 sol2*) LIBS_SYSTEM="-lsocket -lnsl" ;;
1523 ## Motif needs -lgen.
1524 unixware) LIBS_SYSTEM="-lsocket -lnsl -lelf -lgen" ;;
1527 AC_SUBST(LIBS_SYSTEM)
1529 ### Make sure subsequent tests use flags consistent with the build flags.
1531 if test x"${OVERRIDE_CPPFLAGS}" != x; then
1532 CPPFLAGS="${OVERRIDE_CPPFLAGS}"
1534 CPPFLAGS="$C_SWITCH_SYSTEM $C_SWITCH_MACHINE $CPPFLAGS"
1537 # Suppress obsolescent Autoconf test for size_t; Emacs assumes C99 or better.
1538 AC_DEFUN([AC_TYPE_SIZE_T])
1539 # Likewise for obsolescent test for uid_t, gid_t; Emacs assumes them.
1540 AC_DEFUN([AC_TYPE_UID_T])
1542 # sqrt and other floating-point functions such as fmod and frexp
1543 # are found in -lm on many systems.
1545 AC_SEARCH_LIBS([sqrt], [m])
1546 if test "X$LIBS" = "X$OLD_LIBS"; then
1549 LIB_MATH=$ac_cv_search_sqrt
1553 dnl Current possibilities handled by sed (aix4-2 -> aix,
1554 dnl gnu-linux -> gnu/linux, etc.):
1555 dnl gnu, gnu/linux, gnu/kfreebsd, aix, cygwin, darwin, hpux.
1556 dnl And special cases: berkeley-unix, usg-unix-v, ms-dos, windows-nt.
1557 SYSTEM_TYPE=`echo $opsys | sed -e 's/[[0-9]].*//' -e 's|-|/|'`
1564 ## Adding -lm confuses the dynamic linker, so omit it.
1567 freebsd | dragonfly )
1568 SYSTEM_TYPE=berkeley-unix
1570 gnu-linux | gnu-kfreebsd )
1572 hpux10-20 | hpux11 )
1576 SYSTEM_TYPE=windows-nt
1578 dnl NB this may be adjusted below.
1580 SYSTEM_TYPE=berkeley-unix
1584 SYSTEM_TYPE=usg-unix-v
1590 AC_DEFINE_UNQUOTED(SYSTEM_TYPE, "$SYSTEM_TYPE",
1591 [The type of system you are compiling for; sets 'system-type'.])
1592 AC_SUBST([SYSTEM_TYPE])
1595 pre_PKG_CONFIG_CFLAGS=$CFLAGS
1596 pre_PKG_CONFIG_LIBS=$LIBS
1598 PKG_PROG_PKG_CONFIG(0.9.0)
1600 dnl EMACS_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4)
1601 dnl acts like PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4,
1602 dnl HAVE_GSTUFF=yes, HAVE_GSTUFF=no) -- see pkg-config man page --
1603 dnl except that it postprocesses CFLAGS as needed for --enable-gcc-warnings.
1604 dnl EMACS_CHECK_MODULES accepts optional 3rd and 4th arguments that
1605 dnl can take the place of the default HAVE_GSTUFF=yes and HAVE_GSTUFF=no
1607 AC_DEFUN([EMACS_CHECK_MODULES],
1608 [PKG_CHECK_MODULES([$1], [$2],
1609 [$1_CFLAGS=`AS_ECHO(["$$1_CFLAGS"]) | sed -e "$edit_cflags"`
1610 m4_default([$3], [HAVE_$1=yes])],
1611 [m4_default([$4], [HAVE_$1=no])])])
1614 if test "${with_sound}" != "no"; then
1615 # Sound support for GNU/Linux, the free BSDs, MinGW, and Cygwin.
1616 AC_CHECK_HEADERS([machine/soundcard.h sys/soundcard.h soundcard.h mmsystem.h],
1617 have_sound_header=yes, [], [
1619 #define WIN32_LEAN_AND_MEAN
1620 #include <windows.h>
1623 test "${with_sound}" = "oss" && test "${have_sound_header}" != "yes" && \
1624 AC_MSG_ERROR([OSS sound support requested but not found.])
1626 if test "${with_sound}" = "bsd-ossaudio" || test "${with_sound}" = "yes"; then
1627 # Emulation library used on NetBSD.
1628 AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
1629 test "${with_sound}" = "bsd-ossaudio" && test -z "$LIBSOUND" && \
1630 AC_MSG_ERROR([bsd-ossaudio sound support requested but not found.])
1631 dnl FIXME? If we did find ossaudio, should we set with_sound=bsd-ossaudio?
1632 dnl Traditionally, we go on to check for alsa too. Does that make sense?
1636 if test "${with_sound}" = "alsa" || test "${with_sound}" = "yes"; then
1638 ALSA_MODULES="alsa >= $ALSA_REQUIRED"
1639 EMACS_CHECK_MODULES([ALSA], [$ALSA_MODULES])
1640 if test $HAVE_ALSA = yes; then
1641 SAVE_CFLAGS="$CFLAGS"
1643 CFLAGS="$ALSA_CFLAGS $CFLAGS"
1644 LIBS="$ALSA_LIBS $LIBS"
1645 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <asoundlib.h>]], [[snd_lib_error_set_handler (0);]])],
1646 emacs_alsa_normal=yes,
1647 emacs_alsa_normal=no)
1648 if test "$emacs_alsa_normal" != yes; then
1649 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <alsa/asoundlib.h>]],
1650 [[snd_lib_error_set_handler (0);]])],
1651 emacs_alsa_subdir=yes,
1652 emacs_alsa_subdir=no)
1653 if test "$emacs_alsa_subdir" != yes; then
1654 AC_MSG_ERROR([pkg-config found alsa, but it does not compile. See config.log for error messages.])
1656 ALSA_CFLAGS="$ALSA_CFLAGS -DALSA_SUBDIR_INCLUDE"
1659 CFLAGS="$SAVE_CFLAGS"
1661 LIBSOUND="$LIBSOUND $ALSA_LIBS"
1662 CFLAGS_SOUND="$CFLAGS_SOUND $ALSA_CFLAGS"
1663 AC_DEFINE(HAVE_ALSA, 1, [Define to 1 if ALSA is available.])
1664 elif test "${with_sound}" = "alsa"; then
1665 AC_MSG_ERROR([ALSA sound support requested but not found.])
1667 fi dnl with_sound = alsa|yes
1669 dnl Define HAVE_SOUND if we have sound support. We know it works and
1670 dnl compiles only on the specified platforms. For others, it
1671 dnl probably doesn't make sense to try.
1672 dnl FIXME So surely we should bypass this whole section if not using
1673 dnl one of these platforms?
1674 if test x$have_sound_header = xyes || test $HAVE_ALSA = yes; then
1676 dnl defined __FreeBSD__ || defined __NetBSD__ || defined __linux__
1677 dnl Adjust the --with-sound help text if you change this.
1678 gnu-linux|freebsd|netbsd|mingw32|cygwin)
1679 AC_DEFINE(HAVE_SOUND, 1, [Define to 1 if you have sound support.])
1685 AC_SUBST(CFLAGS_SOUND)
1688 dnl checks for header files
1689 AC_CHECK_HEADERS_ONCE(
1696 sys/utsname.h pwd.h utmp.h util.h sys/prctl.h)
1698 AC_CACHE_CHECK([for ADDR_NO_RANDOMIZE],
1699 [emacs_cv_personality_addr_no_randomize],
1701 [AC_LANG_PROGRAM([[#include <sys/personality.h>]],
1702 [[personality (personality (0xffffffff)
1703 | ADDR_NO_RANDOMIZE)]])],
1704 [emacs_cv_personality_addr_no_randomize=yes],
1705 [emacs_cv_personality_addr_no_randomize=no])])
1706 if test $emacs_cv_personality_addr_no_randomize = yes; then
1707 AC_DEFINE([HAVE_PERSONALITY_ADDR_NO_RANDOMIZE], [1],
1708 [Define to 1 if personality flag ADDR_NO_RANDOMIZE exists.])
1711 # Note that Solaris has sys/sysinfo.h which defines struct
1712 # sysinfo as well. To make sure that we're using GNU/Linux
1713 # sysinfo, we explicitly set one of its fields.
1714 if test "$ac_cv_header_sys_sysinfo_h" = yes; then
1715 AC_CACHE_CHECK([if Linux sysinfo may be used], [emacs_cv_linux_sysinfo],
1716 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1717 [[struct sysinfo si;
1720 emacs_cv_linux_sysinfo=yes, emacs_cv_linux_sysinfo=no)])
1722 if test $emacs_cv_linux_sysinfo = yes; then
1723 AC_DEFINE([HAVE_LINUX_SYSINFO], 1, [Define to 1 if you have Linux sysinfo function.])
1724 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1725 [[struct sysinfo si; return si.mem_unit]])],
1726 AC_DEFINE(LINUX_SYSINFO_UNIT, 1,
1727 [Define to 1 if Linux sysinfo sizes are in multiples of mem_unit bytes.]))
1731 dnl On Solaris 8 there's a compilation warning for term.h because
1732 dnl it doesn't define 'bool'.
1733 AC_CHECK_HEADERS(term.h, , , -)
1735 AC_CHECK_DECLS([sys_siglist], [], [], [[#include <signal.h>
1737 if test $ac_cv_have_decl_sys_siglist != yes; then
1738 # For Tru64, at least:
1739 AC_CHECK_DECLS([__sys_siglist], [], [], [[#include <signal.h>
1744 AC_CHECK_HEADERS_ONCE(sys/socket.h)
1745 AC_CHECK_HEADERS(net/if.h, , , [AC_INCLUDES_DEFAULT
1746 #if HAVE_SYS_SOCKET_H
1747 #include <sys/socket.h>
1749 AC_CHECK_HEADERS(ifaddrs.h, , , [AC_INCLUDES_DEFAULT
1750 #if HAVE_SYS_SOCKET_H
1751 #include <sys/socket.h>
1753 AC_CHECK_HEADERS(net/if_dl.h, , , [AC_INCLUDES_DEFAULT
1754 #if HAVE_SYS_SOCKET_H
1755 #include <sys/socket.h>
1758 dnl checks for structure members
1759 AC_CHECK_MEMBERS([struct ifreq.ifr_flags, struct ifreq.ifr_hwaddr,
1760 struct ifreq.ifr_netmask, struct ifreq.ifr_broadaddr,
1761 struct ifreq.ifr_addr,
1762 struct ifreq.ifr_addr.sa_len], , ,
1763 [AC_INCLUDES_DEFAULT
1764 #if HAVE_SYS_SOCKET_H
1765 #include <sys/socket.h>
1771 dnl Check for endianness.
1772 dnl AC_C_BIGENDIAN is done by gnulib.
1774 dnl check for Make feature
1777 AUTODEPEND_PARENTS='lib src'
1778 dnl check if we have GCC and autodepend is on.
1779 if test "$GCC" = yes && test "$ac_enable_autodepend" = yes; then
1780 AC_CACHE_CHECK([whether gcc understands -MMD -MF], [emacs_cv_autodepend],
1781 [SAVE_CFLAGS="$CFLAGS"
1782 CFLAGS="$CFLAGS -MMD -MF deps.d -MP"
1783 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1784 [emacs_cv_autodepend=yes], [emacs_cv_autodepend=no])
1785 CFLAGS="$SAVE_CFLAGS"
1786 test -f deps.d || emacs_cv_autodepend=no
1788 if test $emacs_cv_autodepend = yes; then
1792 AC_SUBST(AUTO_DEPEND)
1794 #### Choose a window system.
1796 ## We leave window_system equal to none if
1797 ## we end up building without one. Any new window system should
1798 ## set window_system to an appropriate value and add objects to
1799 ## window-system-specific substs.
1803 if test "$no_x" != yes; then
1807 LD_SWITCH_X_SITE_RPATH=
1808 if test "${x_libraries}" != NONE; then
1809 if test -n "${x_libraries}"; then
1810 LD_SWITCH_X_SITE=-L`AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -L/g'`
1811 LD_SWITCH_X_SITE_RPATH=-Wl,-rpath,`
1812 AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -Wl,-rpath,/g'
1815 x_default_search_path=""
1816 x_search_path=${x_libraries}
1817 if test -z "${x_search_path}"; then
1818 x_search_path=/usr/lib
1820 for x_library in `AS_ECHO(["$x_search_path:"]) | \
1821 sed -e "s/:/ /g" -e p -e "s:/lib[[^ /]]* :/share :g"`; do
1823 ${x_library}/X11/%L/%T/%N%C%S:\
1824 ${x_library}/X11/%l/%T/%N%C%S:\
1825 ${x_library}/X11/%T/%N%C%S:\
1826 ${x_library}/X11/%L/%T/%N%S:\
1827 ${x_library}/X11/%l/%T/%N%S:\
1828 ${x_library}/X11/%T/%N%S"
1829 if test x"${x_default_search_path}" = x; then
1830 x_default_search_path=${x_search_path}
1832 x_default_search_path="${x_search_path}:${x_default_search_path}"
1836 AC_SUBST(LD_SWITCH_X_SITE_RPATH)
1838 if test "${x_includes}" != NONE && test -n "${x_includes}"; then
1839 C_SWITCH_X_SITE=$isystem`AS_ECHO(["$x_includes"]) | sed -e "s/:/ $isystem/g"`
1842 if test x"${x_includes}" = x; then
1843 bitmapdir=/usr/include/X11/bitmaps
1845 # accumulate include directories that have X11 bitmap subdirectories
1847 for bmd in `AS_ECHO(["$x_includes"]) | sed -e 's/:/ /g'`; do
1848 if test -d "${bmd}/X11/bitmaps"; then
1849 bmd_acc="${bmd_acc}:${bmd}/X11/bitmaps"
1851 if test -d "${bmd}/bitmaps"; then
1852 bmd_acc="${bmd_acc}:${bmd}/bitmaps"
1855 bitmapdir=${bmd_acc#:}
1858 test "${with_ns}" = maybe && test "${opsys}" != darwin && with_ns=no
1860 NS_GNUSTEP_CONFIG=no
1863 tmp_CPPFLAGS="$CPPFLAGS"
1864 tmp_CFLAGS="$CFLAGS"
1865 CPPFLAGS="$CPPFLAGS -x objective-c"
1866 CFLAGS="$CFLAGS -x objective-c"
1869 if test "${with_ns}" != no; then
1870 if test "${opsys}" = darwin; then
1872 ns_appdir=`pwd`/nextstep/Emacs.app
1873 ns_appbindir=${ns_appdir}/Contents/MacOS
1874 ns_appresdir=${ns_appdir}/Contents/Resources
1875 ns_appsrc=Cocoa/Emacs.base
1876 ns_fontfile=macfont.o
1877 elif flags=$( (gnustep-config --objc-flags) 2>/dev/null); then
1879 NS_GNUSTEP_CONFIG=yes
1880 GNU_OBJC_CFLAGS=$flags
1881 LIBS_GNUSTEP=$(gnustep-config --gui-libs) || exit
1882 elif test -f $GNUSTEP_CONFIG_FILE; then
1884 dnl FIXME sourcing this several times in subshells seems inefficient.
1885 GNUSTEP_SYSTEM_HEADERS=$(
1886 . $GNUSTEP_CONFIG_FILE
1887 AS_ECHO(["$GNUSTEP_SYSTEM_HEADERS"])
1889 GNUSTEP_SYSTEM_LIBRARIES=$(
1890 . $GNUSTEP_CONFIG_FILE
1891 AS_ECHO(["$GNUSTEP_SYSTEM_LIBRARIES"])
1893 dnl I seemed to need these as well with GNUstep-startup 0.25.
1894 GNUSTEP_LOCAL_HEADERS=$(
1895 . $GNUSTEP_CONFIG_FILE
1896 AS_ECHO(["$GNUSTEP_LOCAL_HEADERS"])
1898 GNUSTEP_LOCAL_LIBRARIES=$(
1899 . $GNUSTEP_CONFIG_FILE
1900 AS_ECHO(["$GNUSTEP_LOCAL_LIBRARIES"])
1902 test "x${GNUSTEP_LOCAL_HEADERS}" != "x" && \
1903 GNUSTEP_LOCAL_HEADERS="-I${GNUSTEP_LOCAL_HEADERS}"
1904 test "x${GNUSTEP_LOCAL_LIBRARIES}" != "x" && \
1905 GNUSTEP_LOCAL_LIBRARIES="-L${GNUSTEP_LOCAL_LIBRARIES}"
1906 CPPFLAGS="$CPPFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1907 CFLAGS="$CFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1908 LDFLAGS="$LDFLAGS -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES}"
1909 LIBS_GNUSTEP="-lgnustep-gui -lgnustep-base -lobjc -lpthread"
1910 dnl GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS to 0 or 1.
1911 dnl If they had chosen to either define it or not, we could have
1912 dnl just used AC_CHECK_DECL here.
1913 AC_CACHE_CHECK(if GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS,
1914 emacs_cv_objc_exceptions,
1915 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <GNUstepBase/GSConfig.h>]],
1916 [[#if defined BASE_NATIVE_OBJC_EXCEPTIONS && BASE_NATIVE_OBJC_EXCEPTIONS > 0
1920 #endif]])], emacs_cv_objc_exceptions=yes, emacs_cv_objc_exceptions=no ) )
1921 if test $emacs_cv_objc_exceptions = yes; then
1922 dnl _NATIVE_OBJC_EXCEPTIONS is used by the GNUstep headers.
1923 AC_DEFINE(_NATIVE_OBJC_EXCEPTIONS, 1,
1924 [Define if GNUstep uses ObjC exceptions.])
1925 GNU_OBJC_CFLAGS="-fobjc-exceptions"
1928 if test $NS_IMPL_GNUSTEP = yes; then
1929 ns_appdir=`pwd`/nextstep/Emacs.app
1930 ns_appbindir=${ns_appdir}
1931 ns_appresdir=${ns_appdir}/Resources
1932 ns_appsrc=GNUstep/Emacs.base
1933 ns_fontfile=nsfont.o
1936 dnl This is only used while we test the NS headers, it gets reset below.
1937 CPPFLAGS="$CPPFLAGS $GNU_OBJC_CFLAGS"
1938 CFLAGS="$CFLAGS $GNU_OBJC_CFLAGS"
1940 AC_CHECK_HEADER([AppKit/AppKit.h], [HAVE_NS=yes],
1941 [AC_MSG_ERROR([The include files (AppKit/AppKit.h etc) that
1942 are required for a Nextstep build are missing or cannot be compiled.
1943 Either fix this, or re-configure with the option '--without-ns'.])])
1946 if test "${NS_IMPL_COCOA}" = "yes"; then
1947 AC_MSG_CHECKING([for Mac OS X 10.6 or newer])
1948 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <AppKit/AppKit.h>],
1950 #ifdef MAC_OS_X_VERSION_MAX_ALLOWED
1951 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
1954 error "Mac OS X 10.6 or newer required";
1958 ns_osx_have_106=yes,
1960 AC_MSG_RESULT([$ns_osx_have_106])
1962 if test $ns_osx_have_106 = no; then
1963 AC_MSG_ERROR([Mac OS X 10.6 or newer is required]);
1968 AC_SUBST(LIBS_GNUSTEP)
1970 INSTALL_ARCH_INDEP_EXTRA=install-etc
1971 ns_self_contained=no
1974 if test "${HAVE_NS}" = yes; then
1975 if test "$with_toolkit_scroll_bars" = "no"; then
1976 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for Nextstep.])
1979 window_system=nextstep
1980 # set up packaging dirs
1981 if test "${EN_NS_SELF_CONTAINED}" = yes; then
1982 ns_self_contained=yes
1983 prefix=${ns_appresdir}
1984 exec_prefix=${ns_appbindir}
1985 dnl This one isn't really used, only archlibdir is.
1986 libexecdir="\${ns_appbindir}/libexec"
1987 archlibdir="\${ns_appbindir}/libexec"
1988 etcdocdir="\${ns_appresdir}/etc"
1989 etcdir="\${ns_appresdir}/etc"
1990 dnl FIXME maybe set datarootdir instead.
1991 dnl That would also get applications, icons, man.
1992 infodir="\${ns_appresdir}/info"
1993 mandir="\${ns_appresdir}/man"
1994 lispdir="\${ns_appresdir}/lisp"
1995 test "$locallisppathset" = no && locallisppath=""
1996 INSTALL_ARCH_INDEP_EXTRA=
1999 NS_OBJC_OBJ="nsterm.o nsfns.o nsmenu.o nsselect.o nsimage.o $ns_fontfile"
2001 CFLAGS="$tmp_CFLAGS"
2002 CPPFLAGS="$tmp_CPPFLAGS"
2003 AC_SUBST(INSTALL_ARCH_INDEP_EXTRA)
2004 AC_SUBST(ns_self_contained)
2006 AC_SUBST(NS_OBJC_OBJ)
2008 if test "${HAVE_NS}" = yes; then
2010 [if the Objective C compiler supports instancetype],
2011 [emacs_cv_objc_instancetype],
2012 [AC_LANG_PUSH([Objective C])
2014 [AC_LANG_SOURCE([[@interface Test
2015 + (instancetype)test;
2017 emacs_cv_objc_instancetype=yes,
2018 emacs_cv_objc_instancetype=no)
2019 AC_LANG_POP([Objective C])])
2021 if test x$emacs_cv_objc_instancetype = xyes ; then
2022 AC_DEFINE(NATIVE_OBJC_INSTANCETYPE, 1,
2023 [Define if ObjC compiler supports instancetype natively.])
2035 if test "${with_w32}" != no; then
2038 AC_CHECK_HEADER([windows.h], [HAVE_W32=yes],
2039 [AC_MSG_ERROR(['--with-w32' was specified, but windows.h
2040 cannot be found.])])
2043 ## Using --with-w32 with MinGW is a no-op, but we allow it.
2046 AC_MSG_ERROR([Using w32 with an autotools build is only supported for Cygwin and MinGW32.])
2051 if test "${opsys}" = "mingw32"; then
2052 AC_CACHE_CHECK([whether Windows API headers are recent enough], [emacs_cv_w32api],
2053 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2054 #include <windows.h>
2055 #include <usp10.h>]],
2056 [[PIMAGE_NT_HEADERS pHeader;
2057 PIMAGE_SECTION_HEADER pSection = IMAGE_FIRST_SECTION(pHeader)]])],
2058 [emacs_cv_w32api=yes], [emacs_cv_w32api=no])])
2059 if test "${emacs_cv_w32api}" = "no"; then
2060 AC_MSG_ERROR([the Windows API headers are too old to support this build.])
2062 HAVE_W32=${emacs_cv_w32api}
2072 if test "${HAVE_W32}" = "yes"; then
2073 AC_DEFINE(HAVE_NTGUI, 1, [Define to use native MS Windows GUI.])
2074 if test "$with_toolkit_scroll_bars" = "no"; then
2075 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for w32 build.])
2077 AC_CHECK_TOOL(WINDRES, [windres],
2078 [AC_MSG_ERROR([No resource compiler found.])])
2079 W32_OBJ="w32fns.o w32menu.o w32reg.o w32font.o w32term.o"
2080 W32_OBJ="$W32_OBJ w32xfns.o w32select.o w32uniscribe.o"
2081 EMACSRES="emacs.res"
2082 case "$canonical" in
2083 x86_64-*-*) EMACS_MANIFEST="emacs-x64.manifest" ;;
2084 *) EMACS_MANIFEST="emacs-x86.manifest" ;;
2086 dnl Construct something of the form "24,4,0,0" with 4 components.
2087 comma_version=`echo "${PACKAGE_VERSION}.0.0" | sed -e 's/\./,/g' -e 's/^\([[^,]]*,[[^,]]*,[[^,]]*,[[^,]]*\).*/\1/'`
2089 comma_space_version=`echo "$comma_version" | sed 's/,/, /g'`
2090 AC_SUBST(comma_version)
2091 AC_SUBST(comma_space_version)
2092 AC_CONFIG_FILES([nt/emacs.rc nt/emacsclient.rc])
2093 if test "${opsys}" = "cygwin"; then
2094 W32_LIBS="$W32_LIBS -lkernel32 -luser32 -lusp10 -lgdi32"
2095 W32_LIBS="$W32_LIBS -lole32 -lcomdlg32 -lcomctl32 -lwinspool"
2096 # Tell the linker that emacs.res is an object (which we compile from
2097 # the rc file), not a linker script.
2098 W32_RES_LINK="-Wl,emacs.res"
2100 W32_OBJ="$W32_OBJ w32.o w32console.o w32heap.o w32inevt.o w32proc.o"
2101 W32_LIBS="$W32_LIBS -lwinmm -lusp10 -lgdi32 -lcomdlg32"
2102 W32_LIBS="$W32_LIBS -lmpr -lwinspool -lole32 -lcomctl32"
2103 W32_RES_LINK="\$(EMACSRES)"
2104 CLIENTRES="emacsclient.res"
2105 CLIENTW="emacsclientw\$(EXEEXT)"
2106 FIRSTFILE_OBJ=firstfile.o
2109 LIBS_ECLIENT="-lcomctl32"
2110 LIB_WSOCK32="-lwsock32"
2111 NTLIB="ntlib.$ac_objext"
2112 XARGS_LIMIT="-s 10000"
2118 AC_SUBST(EMACS_MANIFEST)
2121 AC_SUBST(W32_RES_LINK)
2122 AC_SUBST(FIRSTFILE_OBJ)
2125 AC_SUBST(LIBS_ECLIENT)
2126 AC_SUBST(LIB_WSOCK32)
2128 AC_SUBST(XARGS_LIMIT)
2130 if test "${HAVE_W32}" = "yes"; then
2135 ## $window_system is now set to the window system we will
2143 case "${window_system}" in
2148 case "${with_x_toolkit}" in
2149 athena | lucid ) USE_X_TOOLKIT=LUCID ;;
2150 motif ) USE_X_TOOLKIT=MOTIF ;;
2152 term_header=gtkutil.h
2153 dnl Don't set this for GTK. A lot of tests below assumes Xt when
2154 dnl USE_X_TOOLKIT is set.
2155 USE_X_TOOLKIT=none ;;
2156 gtk2 ) with_gtk2=yes
2157 term_header=gtkutil.h
2158 USE_X_TOOLKIT=none ;;
2159 gtk3 ) with_gtk3=yes
2160 term_header=gtkutil.h
2161 USE_X_TOOLKIT=none ;;
2162 no ) USE_X_TOOLKIT=none ;;
2163 dnl If user did not say whether to use a toolkit, make this decision later:
2164 dnl use the toolkit if we have gtk, or X11R5 or newer.
2165 * ) USE_X_TOOLKIT=maybe ;;
2169 term_header=nsterm.h
2172 term_header=w32term.h
2176 if test "$window_system" = none && test "X$with_x" != "Xno"; then
2177 AC_CHECK_PROG(HAVE_XSERVER, X, true, false)
2178 if test "$HAVE_XSERVER" = true ||
2179 test -n "$DISPLAY" ||
2181 for emacs_libX11 in /usr/lib/libX11.*; do break; done
2182 test "$emacs_libX11" != '/usr/lib/libX11.*'
2185 AC_MSG_ERROR([You seem to be running X, but no X development libraries
2186 were found. You should install the relevant development files for X
2187 and for the toolkit you want, such as Gtk+ or Motif. Also make
2188 sure you have development files for image handling, i.e.
2189 tiff, gif, jpeg, png and xpm.
2190 If you are sure you want Emacs compiled without X window support, pass
2196 # Does the opsystem file prohibit the use of the GNU malloc?
2197 # Assume not, until told otherwise.
2201 [whether malloc is Doug Lea style],
2202 [emacs_cv_var_doug_lea_malloc],
2203 [emacs_cv_var_doug_lea_malloc=no
2204 dnl Hooks do not work with address sanitization.
2205 if test "$emacs_cv_sanitize_address" != yes; then
2208 [[#include <malloc.h>
2209 static void hook (void) {}]],
2210 [[malloc_set_state (malloc_get_state ());
2211 __after_morecore_hook = hook;
2212 __malloc_initialize_hook = hook;]])],
2213 [emacs_cv_var_doug_lea_malloc=yes])
2215 doug_lea_malloc=$emacs_cv_var_doug_lea_malloc
2220 test "$CANNOT_DUMP" = yes ||
2222 ## darwin ld insists on the use of malloc routines in the System framework.
2223 darwin | mingw32 | nacl | sol2-10) ;;
2224 cygwin | qnxnto | freebsd)
2227 *) test "$ac_cv_func_sbrk" = yes && system_malloc=$emacs_cv_sanitize_address;;
2230 if test "${system_malloc}" != yes && test "${doug_lea_malloc}" != yes \
2231 && test "${UNEXEC_OBJ}" = unexelf.o; then
2237 if test "${system_malloc}" = "yes"; then
2238 AC_DEFINE([SYSTEM_MALLOC], 1,
2239 [Define to 1 to use the system memory allocator, even if it is not
2243 (The GNU allocators don't work with this system configuration.)"
2245 elif test "$hybrid_malloc" = yes; then
2246 AC_DEFINE(HYBRID_MALLOC, 1,
2247 [Define to use gmalloc before dumping and the system malloc after.])
2250 GNU_MALLOC_reason=" (only before dumping)"
2251 GMALLOC_OBJ=gmalloc.o
2254 test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
2255 VMLIMIT_OBJ=vm-limit.o
2257 AC_CHECK_HEADERS([sys/vlimit.h])
2258 AC_CACHE_CHECK([for data_start], [emacs_cv_data_start],
2261 [[extern char data_start[]; char ch;]],
2262 [[return data_start < &ch;]])],
2263 [emacs_cv_data_start=yes],
2264 [emacs_cv_data_start=no])])
2265 if test $emacs_cv_data_start = yes; then
2266 AC_DEFINE([HAVE_DATA_START], 1,
2267 [Define to 1 if data_start is the address of the start
2268 of the main data segment.])
2271 AC_SUBST([HYBRID_MALLOC])
2272 AC_SUBST(GMALLOC_OBJ)
2273 AC_SUBST(VMLIMIT_OBJ)
2275 if test "$doug_lea_malloc" = "yes" && test "$hybrid_malloc" != yes; then
2276 if test "$GNU_MALLOC" = yes ; then
2278 (Using Doug Lea's new malloc from the GNU C Library.)"
2280 AC_DEFINE(DOUG_LEA_MALLOC, 1,
2281 [Define to 1 if the system memory allocator is Doug Lea style,
2282 with malloc hooks and malloc_set_state.])
2284 ## Use mmap directly for allocating larger buffers.
2285 ## FIXME this comes from src/s/{gnu,gnu-linux}.h:
2286 ## #ifdef DOUG_LEA_MALLOC; #undef REL_ALLOC; #endif
2287 ## Does the AC_FUNC_MMAP test below make this check unnecessary?
2289 mingw32|gnu*) REL_ALLOC=no ;;
2293 if test x"${REL_ALLOC}" = x; then
2294 REL_ALLOC=${GNU_MALLOC}
2297 use_mmap_for_buffers=no
2299 mingw32) use_mmap_for_buffers=yes ;;
2303 if test $use_mmap_for_buffers = yes; then
2304 AC_DEFINE(USE_MMAP_FOR_BUFFERS, 1, [Define to use mmap to allocate buffer text.])
2308 LIBS="$LIBS_SYSTEM $LIBS"
2310 dnl FIXME replace main with a function we actually want from this library.
2311 AC_CHECK_LIB(Xbsd, main, LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -lXbsd")
2313 dnl Check for the POSIX thread library.
2315 AC_CHECK_HEADERS_ONCE(pthread.h)
2316 if test "$ac_cv_header_pthread_h" && test "$opsys" != "mingw32"; then
2317 AC_CACHE_CHECK([for pthread library],
2318 [emacs_cv_pthread_lib],
2319 [emacs_cv_pthread_lib=no
2321 for emacs_pthread_lib in 'none needed' -lpthread; do
2322 case $emacs_pthread_lib in
2323 -*) LIBS="$OLD_LIBS $emacs_pthread_lib";;
2327 [[#include <pthread.h>
2329 sigset_t old_mask, new_mask;
2330 void noop (void) {}]],
2331 [[pthread_t th = pthread_self ();
2333 status += pthread_create (&th, 0, 0, 0);
2334 status += pthread_sigmask (SIG_BLOCK, &new_mask, &old_mask);
2335 status += pthread_kill (th, 0);
2336 #if ! (defined SYSTEM_MALLOC || defined HYBRID_MALLOC \
2337 || defined DOUG_LEA_MALLOC)
2338 /* Test for pthread_atfork only if gmalloc uses it,
2339 as older-style hosts like MirBSD 10 lack it. */
2340 status += pthread_atfork (noop, noop, noop);
2343 [emacs_cv_pthread_lib=$emacs_pthread_lib])
2345 if test "$emacs_cv_pthread_lib" != no; then
2349 if test "$emacs_cv_pthread_lib" != no; then
2350 AC_DEFINE([HAVE_PTHREAD], 1, [Define to 1 if you have POSIX threads.])
2351 case $emacs_cv_pthread_lib in
2352 -*) LIB_PTHREAD=$emacs_cv_pthread_lib;;
2354 ac_cv_func_pthread_sigmask=yes
2355 # Some systems optimize for single-threaded programs by default, and
2356 # need special flags to disable these optimizations. For example, the
2357 # definition of 'errno' in <errno.h>.
2360 AC_DEFINE([_REENTRANT], 1,
2361 [Define to 1 if your system requires this in multithreaded code.]);;
2363 AC_DEFINE([_THREAD_SAFE], 1,
2364 [Define to 1 if your system requires this in multithreaded code.]);;
2368 AC_SUBST([LIB_PTHREAD])
2370 AC_MSG_CHECKING([for thread support])
2372 if test "$with_threads" = yes; then
2373 if test "$emacs_cv_pthread_lib" != no; then
2374 AC_DEFINE(THREADS_ENABLED, 1,
2375 [Define to 1 if you want elisp thread support.])
2377 elif test "${opsys}" = "mingw32"; then
2378 dnl MinGW can do native Windows threads even without pthreads
2379 AC_DEFINE(THREADS_ENABLED, 1,
2380 [Define to 1 if you want elisp thread support.])
2384 AC_MSG_RESULT([$threads_enabled])
2386 dnl Check for need for bigtoc support on IBM AIX
2390 AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
2392 yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
2393 *) gdb_cv_bigtoc=-bbigtoc ;;
2396 LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
2397 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[int i;]])], [], [gdb_cv_bigtoc=])
2402 # Change CFLAGS, CPPFLAGS, and LIBS temporarily so that C_SWITCH_X_SITE
2403 # is for the tests that follow. We set them back later on.
2405 REAL_CFLAGS="$CFLAGS"
2406 REAL_CPPFLAGS="$CPPFLAGS"
2409 if test "${HAVE_X11}" = "yes"; then
2410 DEFS="$C_SWITCH_X_SITE $DEFS"
2411 LDFLAGS="$LDFLAGS $LD_SWITCH_X_SITE"
2413 CFLAGS="$C_SWITCH_X_SITE $CFLAGS"
2414 CPPFLAGS="$C_SWITCH_X_SITE $CPPFLAGS"
2416 # On Solaris, arrange for LD_RUN_PATH to point to the X libraries for tests.
2417 # This is handled by LD_SWITCH_X_SITE_RPATH during the real build,
2418 # but it's more convenient here to set LD_RUN_PATH since this
2419 # also works on hosts that don't understand LD_SWITCH_X_SITE_RPATH.
2420 if test "${x_libraries}" != NONE && test -n "${x_libraries}"; then
2421 LD_RUN_PATH=$x_libraries${LD_RUN_PATH+:}$LD_RUN_PATH
2425 if test "${opsys}" = "gnu-linux"; then
2426 AC_CACHE_CHECK([whether X on GNU/Linux needs -b to link], [emacs_cv_b_link],
2427 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2428 [[XOpenDisplay ("foo");]])],
2429 [xgnu_linux_first_failure=no],
2430 [xgnu_linux_first_failure=yes])
2431 if test "${xgnu_linux_first_failure}" = "yes"; then
2432 OLD_CPPFLAGS="$CPPFLAGS"
2434 CPPFLAGS="$CPPFLAGS -b i486-linuxaout"
2435 LIBS="$LIBS -b i486-linuxaout"
2436 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2437 [[XOpenDisplay ("foo");]])],
2438 [xgnu_linux_second_failure=no],
2439 [xgnu_linux_second_failure=yes])
2440 if test "${xgnu_linux_second_failure}" = "yes"; then
2441 # If we get the same failure with -b, there is no use adding -b.
2442 # So leave it out. This plays safe.
2447 CPPFLAGS=$OLD_CPPFLAGS
2452 if test "x$emacs_cv_b_link" = xyes ; then
2453 LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -b i486-linuxaout"
2454 C_SWITCH_X_SITE="$C_SWITCH_X_SITE -b i486-linuxaout"
2458 # Reportedly, some broken Solaris systems have XKBlib.h but are missing
2459 # header files included from there.
2460 AC_CACHE_CHECK([for Xkb], [emacs_cv_xkb],
2461 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>
2462 #include <X11/XKBlib.h>]],
2463 [[XkbDescPtr kb = XkbGetKeyboard (0, XkbAllComponentsMask, XkbUseCoreKbd);]])],
2464 emacs_cv_xkb=yes, emacs_cv_xkb=no)])
2465 if test $emacs_cv_xkb = yes; then
2466 AC_DEFINE(HAVE_XKB, 1, [Define to 1 if you have the Xkb extension.])
2469 AC_CHECK_FUNCS(XrmSetDatabase XScreenResourceString \
2470 XScreenNumberOfScreen)
2473 if test "${window_system}" = "x11"; then
2474 AC_MSG_CHECKING(X11 version 6)
2475 AC_CACHE_VAL(emacs_cv_x11_version_6,
2476 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]],
2477 [[#if XlibSpecificationRelease < 6
2480 ]])], emacs_cv_x11_version_6=yes, emacs_cv_x11_version_6=no)])
2481 if test $emacs_cv_x11_version_6 = yes; then
2482 AC_MSG_RESULT(6 or newer)
2483 AC_DEFINE(HAVE_X11R6, 1,
2484 [Define to 1 if you have the X11R6 or newer version of Xlib.])
2485 AC_DEFINE(HAVE_X_I18N, 1, [Define if you have usable i18n support.])
2486 ## inoue@ainet.or.jp says Solaris has a bug related to X11R6-style
2490 *) AC_DEFINE(HAVE_X11R6_XIM, 1,
2491 [Define if you have usable X11R6-style XIM support.])
2495 AC_MSG_RESULT(before 6)
2500 ### Use -lrsvg-2 if available, unless '--with-rsvg=no' is specified.
2502 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${opsys}" = "mingw32"; then
2503 if test "${with_rsvg}" != "no"; then
2504 RSVG_REQUIRED=2.11.0
2505 RSVG_MODULE="librsvg-2.0 >= $RSVG_REQUIRED"
2507 EMACS_CHECK_MODULES([RSVG], [$RSVG_MODULE])
2508 AC_SUBST(RSVG_CFLAGS)
2511 if test $HAVE_RSVG = yes; then
2512 AC_DEFINE(HAVE_RSVG, 1, [Define to 1 if using librsvg.])
2513 CFLAGS="$CFLAGS $RSVG_CFLAGS"
2514 # Windows loads librsvg dynamically
2515 if test "${opsys}" = "mingw32"; then
2523 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${HAVE_W32}" = "yes"; then
2524 if test "${with_imagemagick}" != "no"; then
2525 ## 6.3.5 is the earliest version known to work; see Bug#17339.
2526 ## 6.8.2 makes Emacs crash; see Bug#13867.
2527 ## 7 and later have not been ported to; See Bug#25967.
2528 IMAGEMAGICK_MODULE="Wand >= 6.3.5 Wand != 6.8.2 Wand < 7"
2529 EMACS_CHECK_MODULES([IMAGEMAGICK], [$IMAGEMAGICK_MODULE])
2531 if test $HAVE_IMAGEMAGICK = yes; then
2534 CFLAGS="$CFLAGS $IMAGEMAGICK_CFLAGS"
2535 LIBS="$IMAGEMAGICK_LIBS $LIBS"
2536 AC_CHECK_FUNCS([MagickRelinquishMemory MagickExportImagePixels \
2537 MagickMergeImageLayers MagickAutoOrientImage])
2540 # Check that ImageMagick links. It does not link on Fedora 25
2541 # with './configure CC=clang', as pkg-config outputs flags like
2542 # -lomp that work for GCC but not Clang.
2543 if test "$ac_cv_func_MagickRelinquishMemory" != yes; then
2547 if test $HAVE_IMAGEMAGICK = yes; then
2548 AC_DEFINE([HAVE_IMAGEMAGICK], 1, [Define to 1 if using ImageMagick.])
2553 AC_SUBST([IMAGEMAGICK_CFLAGS])
2554 AC_SUBST([IMAGEMAGICK_LIBS])
2558 AC_CHECK_LIB(anl, getaddrinfo_a, HAVE_GETADDRINFO_A=yes)
2559 if test "${HAVE_GETADDRINFO_A}" = "yes"; then
2560 AC_DEFINE(HAVE_GETADDRINFO_A, 1,
2561 [Define to 1 if you have getaddrinfo_a for asynchronous DNS resolution.])
2562 GETADDRINFO_A_LIBS="-lanl"
2563 AC_SUBST(GETADDRINFO_A_LIBS)
2568 gtk_term_header=$term_header
2571 if test "${opsys}" != "mingw32"; then
2572 if test "${with_gtk3}" = "yes" || test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
2575 GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2577 dnl Checks for libraries.
2578 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2579 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2580 if test "$pkg_check_gtk" = "no" && test "$with_gtk3" = "yes"; then
2581 AC_MSG_ERROR($GTK_PKG_ERRORS)
2583 if test "$pkg_check_gtk" = "yes"; then
2584 AC_DEFINE(HAVE_GTK3, 1, [Define to 1 if using GTK 3 or later.])
2585 GTK_OBJ=emacsgtkfixed.o
2586 gtk_term_header=gtkutil.h
2587 USE_GTK_TOOLKIT="GTK3"
2588 if test "x$ac_enable_gtk_deprecation_warnings" = x; then
2589 AC_DEFINE([GDK_DISABLE_DEPRECATION_WARNINGS], [1],
2590 [Define to 1 to disable GTK+/GDK deprecation warnings.])
2591 AC_DEFINE([GLIB_DISABLE_DEPRECATION_WARNINGS], [1],
2592 [Define to 1 to disable Glib deprecation warnings.])
2596 gtk3_pkg_errors="$GTK_PKG_ERRORS "
2600 if test "${with_gtk2}" = "yes" || test "$check_gtk2" = "yes"; then
2603 GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2605 dnl Checks for libraries.
2606 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2607 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2608 if test "$pkg_check_gtk" = "no" &&
2609 { test "$with_gtk" = yes || test "$with_gtk2" = "yes"; }
2611 AC_MSG_ERROR($gtk3_pkg_errors$GTK_PKG_ERRORS)
2613 test "$pkg_check_gtk" = "yes" && USE_GTK_TOOLKIT="GTK2"
2620 if test x"$pkg_check_gtk" = xyes; then
2623 CFLAGS="$CFLAGS $GTK_CFLAGS"
2624 LIBS="$GTK_LIBS $LIBS"
2625 dnl Try to compile a simple GTK program.
2626 AC_CACHE_CHECK([whether GTK compiles], [emacs_cv_gtk_compiles],
2629 [[/* Check the Gtk and Glib APIs. */
2630 #include <gtk/gtk.h>
2631 #include <glib-object.h>
2633 callback (GObject *go, GParamSpec *spec, gpointer user_data)
2637 GtkSettings *gs = 0;
2638 /* Use G_CALLBACK to make sure function pointers can be cast to void *;
2639 strict C prohibits this. Use gtk_main_iteration to test that the
2640 libraries are there. */
2641 if (g_signal_handler_find (G_OBJECT (gs), G_SIGNAL_MATCH_FUNC,
2642 0, 0, 0, G_CALLBACK (callback), 0))
2643 gtk_main_iteration ();
2645 [emacs_cv_gtk_compiles=yes], [emacs_cv_gtk_compiles=no])])
2646 if test "${emacs_cv_gtk_compiles}" != "yes"; then
2648 if test "$USE_X_TOOLKIT" != "maybe"; then
2649 AC_MSG_ERROR([Gtk+ wanted, but it does not compile, see config.log. Maybe some x11-devel files missing?]);
2652 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $GTK_CFLAGS"
2654 AC_DEFINE(USE_GTK, 1, [Define to 1 if using GTK.])
2655 GTK_OBJ="gtkutil.o $GTK_OBJ"
2656 term_header=$gtk_term_header
2658 AC_MSG_WARN([[Your version of Gtk+ will have problems with
2659 closing open displays. This is no problem if you just use
2660 one display, but if you use more than one and close one of them
2662 See https://bugzilla.gnome.org/show_bug.cgi?id=85715]])
2669 if test "${HAVE_GTK}" = "yes"; then
2671 dnl GTK scrollbars resemble toolkit scrollbars a lot, so to avoid
2672 dnl a lot if #ifdef:s, say we have toolkit scrollbars.
2673 if test "$with_toolkit_scroll_bars" != no; then
2674 with_toolkit_scroll_bars=yes
2677 dnl Check if we have the old file selection dialog declared and
2678 dnl in the link library. In 2.x it may be in the library,
2679 dnl but not declared if deprecated featured has been selected out.
2680 dnl AC_CHECK_DECL checks for a macro, so check for GTK_TYPE_FILE_SELECTION.
2681 HAVE_GTK_FILE_SELECTION=no
2682 AC_CHECK_DECL(GTK_TYPE_FILE_SELECTION, HAVE_GTK_FILE_SELECTION=yes,
2683 HAVE_GTK_FILE_SELECTION=no, [AC_INCLUDES_DEFAULT
2684 #include <gtk/gtk.h>])
2685 if test "$HAVE_GTK_FILE_SELECTION" = yes; then
2686 AC_CHECK_FUNCS(gtk_file_selection_new)
2689 dnl Same as above for gtk_handle_box.
2690 HAVE_GTK_HANDLE_BOX=no
2691 AC_CHECK_DECL(GTK_TYPE_HANDLE_BOX, HAVE_GTK_HANDLE_BOX=yes,
2692 HAVE_GTK_HANDLE_BOX=no, [AC_INCLUDES_DEFAULT
2693 #include <gtk/gtk.h>])
2694 if test "$HAVE_GTK_HANDLE_BOX" = yes; then
2695 AC_CHECK_FUNCS(gtk_handle_box_new)
2698 dnl Same as above for gtk_tearoff_menu_item.
2699 HAVE_GTK_TEAROFF_MENU_ITEM=no
2700 AC_CHECK_DECL(GTK_TYPE_TEAROFF_MENU_ITEM, HAVE_GTK_TEAROFF_MENU_ITEM=yes,
2701 HAVE_GTK_TEAROFF_MENU_ITEM=no, [AC_INCLUDES_DEFAULT
2702 #include <gtk/gtk.h>])
2703 if test "$HAVE_GTK_TEAROFF_MENU_ITEM" = yes; then
2704 AC_CHECK_FUNCS(gtk_tearoff_menu_item_new)
2707 dnl Check for functions introduced in 2.14 and later.
2708 AC_CHECK_FUNCS(gtk_widget_get_window gtk_widget_set_has_window \
2709 gtk_dialog_get_action_area gtk_widget_get_sensitive \
2710 gtk_widget_get_mapped gtk_adjustment_get_page_size \
2711 gtk_orientable_set_orientation \
2712 gtk_window_set_has_resize_grip)
2714 term_header=gtkutil.h
2718 dnl Enable xwidgets if GTK3 and WebKitGTK+ are available.
2721 if test "$with_xwidgets" != "no"; then
2722 test "$USE_GTK_TOOLKIT" = "GTK3" && test "$window_system" != "none" ||
2723 AC_MSG_ERROR([xwidgets requested but gtk3 not used.])
2725 WEBKIT_REQUIRED=2.12
2726 WEBKIT_MODULES="webkit2gtk-4.0 >= $WEBKIT_REQUIRED"
2727 EMACS_CHECK_MODULES([WEBKIT], [$WEBKIT_MODULES])
2728 HAVE_XWIDGETS=$HAVE_WEBKIT
2729 test $HAVE_XWIDGETS = yes ||
2730 AC_MSG_ERROR([xwidgets requested but WebKitGTK+ not found.])
2732 XWIDGETS_OBJ=xwidget.o
2733 AC_DEFINE([HAVE_XWIDGETS], 1, [Define to 1 if you have xwidgets support.])
2735 AC_SUBST(XWIDGETS_OBJ)
2740 dnl D-Bus has been tested under GNU/Linux only. Must be adapted for
2741 dnl other platforms.
2744 if test "${with_dbus}" = "yes"; then
2745 EMACS_CHECK_MODULES([DBUS], [dbus-1 >= 1.0])
2746 if test "$HAVE_DBUS" = yes; then
2747 AC_DEFINE(HAVE_DBUS, 1, [Define to 1 if using D-Bus.])
2748 dnl dbus_watch_get_unix_fd has been introduced in D-Bus 1.1.1.
2749 dnl dbus_type_is_valid and dbus_validate_* have been introduced in
2752 LIBS="$LIBS $DBUS_LIBS"
2753 AC_CHECK_FUNCS(dbus_watch_get_unix_fd \
2754 dbus_type_is_valid \
2755 dbus_validate_bus_name \
2756 dbus_validate_path \
2757 dbus_validate_interface \
2758 dbus_validate_member)
2763 AC_SUBST(DBUS_CFLAGS)
2767 dnl GSettings has been tested under GNU/Linux only.
2769 if test "${HAVE_X11}" = "yes" && test "${with_gsettings}" = "yes"; then
2770 EMACS_CHECK_MODULES([GSETTINGS], [gio-2.0 >= 2.26])
2771 if test "$HAVE_GSETTINGS" = "yes"; then
2773 CFLAGS="$CFLAGS $GSETTINGS_CFLAGS"
2775 LIBS="$LIBS $GSETTINGS_LIBS"
2776 AC_CACHE_CHECK([whether GSettings is in gio], [emacs_cv_gsettings_in_gio],
2779 [[/* Check that gsettings really is present. */
2780 #include <glib-object.h>
2781 #include <gio/gio.h>
2784 GSettings *settings;
2785 GVariant *val = g_settings_get_value (settings, "");
2787 [emacs_cv_gsettings_in_gio=yes], [emacs_cv_gsettings_in_gio=no])])
2789 if test "$emacs_cv_gsettings_in_gio" = "yes"; then
2790 AC_DEFINE(HAVE_GSETTINGS, 1, [Define to 1 if using GSettings.])
2791 SETTINGS_CFLAGS="$GSETTINGS_CFLAGS"
2792 SETTINGS_LIBS="$GSETTINGS_LIBS"
2793 test "$with_gconf" = "yes" || with_gconf=no
2800 dnl GConf has been tested under GNU/Linux only.
2801 dnl The version is really arbitrary, it is about the same age as Gtk+ 2.6.
2803 if test "${HAVE_X11}" = "yes" && test "${with_gconf}" != "no"; then
2804 EMACS_CHECK_MODULES([GCONF], [gconf-2.0 >= 2.13])
2805 if test "$HAVE_GCONF" = yes; then
2806 AC_DEFINE(HAVE_GCONF, 1, [Define to 1 if using GConf.])
2807 dnl Newer GConf doesn't link with g_objects, so this is not defined.
2808 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GCONF_CFLAGS"
2809 SETTINGS_LIBS="$SETTINGS_LIBS $GCONF_LIBS"
2813 if test "$HAVE_GSETTINGS" = "yes" || test "$HAVE_GCONF" = "yes"; then
2814 EMACS_CHECK_MODULES([GOBJECT], [gobject-2.0 >= 2.0])
2815 if test "$HAVE_GOBJECT" = "yes"; then
2816 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GOBJECT_CFLAGS"
2817 SETTINGS_LIBS="$SETTINGS_LIBS $GOBJECT_LIBS"
2819 SAVE_CFLAGS="$CFLAGS"
2821 CFLAGS="$SETTINGS_CFLAGS $CFLAGS"
2822 LIBS="$SETTINGS_LIBS $LIBS"
2823 CFLAGS="$SAVE_CFLAGS"
2826 AC_SUBST(SETTINGS_CFLAGS)
2827 AC_SUBST(SETTINGS_LIBS)
2830 dnl SELinux is available for GNU/Linux only.
2833 if test "${with_selinux}" = "yes"; then
2834 AC_CHECK_LIB([selinux], [lgetfilecon], HAVE_LIBSELINUX=yes, HAVE_LIBSELINUX=no)
2835 if test "$HAVE_LIBSELINUX" = yes; then
2836 AC_DEFINE(HAVE_LIBSELINUX, 1, [Define to 1 if using SELinux.])
2837 LIBSELINUX_LIBS=-lselinux
2840 AC_SUBST(LIBSELINUX_LIBS)
2843 if test "${with_gnutls}" = "yes" ; then
2844 EMACS_CHECK_MODULES([LIBGNUTLS], [gnutls >= 2.12.2],
2845 [HAVE_GNUTLS=yes], [HAVE_GNUTLS=no])
2846 if test "${HAVE_GNUTLS}" = "yes"; then
2847 AC_DEFINE(HAVE_GNUTLS, 1, [Define if using GnuTLS.])
2850 # Windows loads GnuTLS dynamically
2851 if test "${opsys}" = "mingw32"; then
2856 AC_SUBST(LIBGNUTLS_LIBS)
2857 AC_SUBST(LIBGNUTLS_CFLAGS)
2860 if test "${with_libsystemd}" = "yes" ; then
2861 dnl This code has been tested with libsystemd 222 and later.
2862 dnl FIXME: Find the earliest version number for which Emacs should work,
2863 dnl and change '222' to that number.
2864 EMACS_CHECK_MODULES([LIBSYSTEMD], [libsystemd >= 222],
2865 [HAVE_LIBSYSTEMD=yes], [HAVE_LIBSYSTEMD=no])
2866 if test "${HAVE_LIBSYSTEMD}" = "yes"; then
2867 AC_DEFINE(HAVE_LIBSYSTEMD, 1, [Define if using libsystemd.])
2871 AC_SUBST(LIBSYSTEMD_LIBS)
2872 AC_SUBST(LIBSYSTEMD_CFLAGS)
2877 if test "${with_json}" = yes; then
2878 EMACS_CHECK_MODULES([JSON], [jansson >= 2.7],
2879 [HAVE_JSON=yes], [HAVE_JSON=no])
2880 if test "${HAVE_JSON}" = yes; then
2881 AC_DEFINE(HAVE_JSON, 1, [Define if using Jansson.])
2887 AC_SUBST(JSON_CFLAGS)
2893 dnl MS Windows native file monitor is available for mingw32 only.
2894 case $with_file_notification,$opsys in
2896 AC_MSG_ERROR(['--with-file-notification=w32' was specified, but
2897 this is only supported on MS-Windows native and MinGW32 builds.
2898 Consider using gfile instead.])
2900 w32,* | yes,mingw32)
2901 AC_CHECK_HEADER(windows.h)
2902 if test "$ac_cv_header_windows_h" = yes ; then
2903 AC_DEFINE(HAVE_W32NOTIFY, 1, [Define to 1 to use w32notify.])
2904 NOTIFY_OBJ=w32notify.o
2905 NOTIFY_SUMMARY="yes (w32)"
2909 dnl inotify is available only on GNU/Linux.
2910 case $with_file_notification,$NOTIFY_OBJ in
2912 AC_CHECK_HEADER(sys/inotify.h)
2913 if test "$ac_cv_header_sys_inotify_h" = yes ; then
2914 AC_CHECK_FUNC(inotify_init1)
2915 if test "$ac_cv_func_inotify_init1" = yes; then
2916 AC_DEFINE(HAVE_INOTIFY, 1, [Define to 1 to use inotify.])
2917 NOTIFY_OBJ=inotify.o
2918 NOTIFY_SUMMARY="yes -lglibc (inotify)"
2923 dnl kqueue is available on BSD-like systems.
2924 case $with_file_notification,$NOTIFY_OBJ in
2926 EMACS_CHECK_MODULES([KQUEUE], [libkqueue])
2927 if test "$HAVE_KQUEUE" = "yes"; then
2928 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2929 CPPFLAGS="$CPPFLAGS -I/usr/include/kqueue"
2930 NOTIFY_CFLAGS=$KQUEUE_CFLAGS
2931 NOTIFY_LIBS=$KQUEUE_LIBS
2933 NOTIFY_SUMMARY="yes -lkqueue"
2935 AC_SEARCH_LIBS(kqueue, [])
2936 if test "$ac_cv_search_kqueue" != no; then
2937 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2939 NOTIFY_SUMMARY="yes (kqueue)"
2944 dnl g_file_monitor exists since glib 2.18. G_FILE_MONITOR_EVENT_MOVED
2945 dnl has been added in glib 2.24. It has been tested under
2947 case $with_file_notification,$NOTIFY_OBJ in
2949 if test "${HAVE_NS}" = yes; then
2950 AC_MSG_ERROR(['--with-file-notification=gfile' is not supported in NextStep builds.
2951 Consider kqueue instead.])
2953 EMACS_CHECK_MODULES([GFILENOTIFY], [gio-2.0 >= 2.24])
2954 if test "$HAVE_GFILENOTIFY" = "yes"; then
2955 AC_DEFINE(HAVE_GFILENOTIFY, 1, [Define to 1 if using GFile.])
2956 NOTIFY_CFLAGS=$GFILENOTIFY_CFLAGS
2957 NOTIFY_LIBS=$GFILENOTIFY_LIBS
2958 NOTIFY_OBJ=gfilenotify.o
2959 NOTIFY_SUMMARY="yes -lgio (gfile)"
2964 case $with_file_notification,$NOTIFY_OBJ in
2965 yes,* | no,* | *,?*) ;;
2966 *) AC_MSG_ERROR([File notification '$with_file_notification' requested but requirements not found.]) ;;
2969 if test -n "$NOTIFY_OBJ"; then
2970 AC_DEFINE(USE_FILE_NOTIFY, 1, [Define to 1 if using file notifications.])
2972 AC_SUBST(NOTIFY_CFLAGS)
2973 AC_SUBST(NOTIFY_LIBS)
2974 AC_SUBST(NOTIFY_OBJ)
2976 dnl Do not put whitespace before the #include statements below.
2977 dnl Older compilers (eg sunos4 cc) choke on it.
2980 if test x"${USE_X_TOOLKIT}" = xmaybe || test x"${USE_X_TOOLKIT}" = xLUCID; then
2981 if test "$with_xaw3d" != no; then
2982 AC_CACHE_VAL(emacs_cv_xaw3d,
2983 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
2984 #include <X11/Intrinsic.h>
2985 #include <X11/Xaw3d/Simple.h>]],
2987 [AC_CHECK_LIB(Xaw3d, XawScrollbarSetThumb,
2988 emacs_cv_xaw3d=yes, emacs_cv_xaw3d=no)],
2989 emacs_cv_xaw3d=no)])
2993 if test $emacs_cv_xaw3d = yes; then
2994 AC_MSG_CHECKING(for xaw3d)
2995 AC_MSG_RESULT([yes; using Lucid toolkit])
2999 AC_DEFINE(HAVE_XAW3D, 1,
3000 [Define to 1 if you have the Xaw3d library (-lXaw3d).])
3002 AC_MSG_CHECKING(for xaw3d)
3004 AC_MSG_CHECKING(for libXaw)
3005 AC_CACHE_VAL(emacs_cv_xaw,
3006 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
3007 #include <X11/Intrinsic.h>
3008 #include <X11/Xaw/Simple.h>]],
3012 if test $emacs_cv_xaw = yes; then
3013 AC_MSG_RESULT([yes; using Lucid toolkit])
3016 elif test x"${USE_X_TOOLKIT}" = xLUCID; then
3017 AC_MSG_ERROR([Lucid toolkit requires X11/Xaw include files])
3019 AC_MSG_ERROR([No X toolkit could be found.
3020 If you are sure you want Emacs compiled without an X toolkit, pass
3022 to configure. Otherwise, install the development libraries for the toolkit
3023 that you want to use (e.g. Gtk+) and re-run configure.])
3028 X_TOOLKIT_TYPE=$USE_X_TOOLKIT
3032 if test "${USE_X_TOOLKIT}" != "none"; then
3033 AC_MSG_CHECKING(X11 toolkit version)
3034 AC_CACHE_VAL(emacs_cv_x11_toolkit_version_6,
3035 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Intrinsic.h>]],
3036 [[#if XtSpecificationRelease < 6
3039 ]])], emacs_cv_x11_toolkit_version_6=yes, emacs_cv_x11_toolkit_version_6=no)])
3040 HAVE_X11XTR6=$emacs_cv_x11_toolkit_version_6
3041 if test $emacs_cv_x11_toolkit_version_6 = yes; then
3042 AC_MSG_RESULT(6 or newer)
3043 AC_DEFINE(HAVE_X11XTR6, 1,
3044 [Define to 1 if you have the X11R6 or newer version of Xt.])
3045 LIBXTR6="-lSM -lICE"
3047 ## Use libw.a along with X11R6 Xt.
3048 unixware) LIBXTR6="$LIBXTR6 -lw" ;;
3051 AC_MSG_RESULT(before 6)
3054 dnl If using toolkit, check whether libXmu.a exists.
3055 dnl tranle@intellicorp.com says libXmu.a can need XtMalloc in libXt.a to link.
3057 if test x$HAVE_X11XTR6 = xyes; then
3058 OTHERLIBS='-lXt -lSM -lICE'
3062 AC_SEARCH_LIBS([XmuConvertStandardSelection], [Xmu], [], [], [$OTHERLIBS])
3063 if test "X$LIBS" != "X$OLDLIBS"; then
3064 LIBXMU=$ac_cv_search_XmuConvertStandardSelection
3067 dnl ac_cv_search_XmuConvertStandardSelection is also referenced below.
3073 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3074 # OpenMotif may be installed in such a way on some GNU/Linux systems.
3075 if test -d /usr/include/openmotif; then
3076 CPPFLAGS="-I/usr/include/openmotif $CPPFLAGS"
3077 emacs_cv_openmotif=yes
3078 case "$canonical" in
3079 x86_64-*-linux-gnu* | powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*)
3080 test -d /usr/lib64/openmotif && LDFLAGS="-L/usr/lib64/openmotif $LDFLAGS"
3083 test -d /usr/lib/openmotif && LDFLAGS="-L/usr/lib/openmotif $LDFLAGS"
3086 emacs_cv_openmotif=no
3088 AC_CACHE_CHECK(for (Open)Motif version 2.1, emacs_cv_motif_version_2_1,
3089 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <Xm/Xm.h>]],
3090 [[#if XmVERSION > 2 || (XmVERSION == 2 && XmREVISION >= 1)
3093 Motif version prior to 2.1.
3095 emacs_cv_motif_version_2_1=yes, emacs_cv_motif_version_2_1=no)])
3096 if test $emacs_cv_motif_version_2_1 = yes; then
3097 AC_CHECK_LIB(Xp, XpCreateContext, LIBXP=-lXp)
3098 if test x$emacs_cv_openmotif = xyes; then
3099 REAL_CPPFLAGS="-I/usr/include/openmotif $REAL_CPPFLAGS"
3102 AC_CACHE_CHECK(for LessTif where some systems put it, emacs_cv_lesstif,
3103 # We put this in CFLAGS temporarily to precede other -I options
3104 # that might be in CFLAGS temporarily.
3105 # We put this in CPPFLAGS where it precedes the other -I options.
3106 OLD_CPPFLAGS=$CPPFLAGS
3108 CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CPPFLAGS"
3109 CFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CFLAGS"
3110 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include </usr/X11R6/LessTif/Motif1.2/include/Xm/Xm.h>]],
3112 emacs_cv_lesstif=yes, emacs_cv_lesstif=no)])
3113 if test $emacs_cv_lesstif = yes; then
3114 # Make sure this -I option remains in CPPFLAGS after it is set
3115 # back to REAL_CPPFLAGS.
3116 # There is no need to change REAL_CFLAGS, because REAL_CFLAGS does not
3117 # have those other -I options anyway. Ultimately, having this
3118 # directory ultimately in CPPFLAGS will be enough.
3119 REAL_CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $REAL_CPPFLAGS"
3120 LDFLAGS="-L/usr/X11R6/LessTif/Motif1.2/lib $LDFLAGS"
3123 CPPFLAGS=$OLD_CPPFLAGS
3126 AC_CHECK_HEADER([Xm/BulletinB.h], [],
3127 [AC_MSG_ERROR([Motif toolkit requested but requirements not found.])])
3130 dnl Use toolkit scroll bars if configured for GTK or X toolkit and either
3131 dnl using Motif or Xaw3d is available, and unless
3132 dnl --with-toolkit-scroll-bars=no was specified.
3134 AH_TEMPLATE(USE_TOOLKIT_SCROLL_BARS,
3135 [Define to 1 if we should use toolkit scroll bars.])dnl
3136 USE_TOOLKIT_SCROLL_BARS=no
3137 if test "${with_toolkit_scroll_bars}" != "no"; then
3138 if test "${USE_X_TOOLKIT}" != "none"; then
3139 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3140 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3142 USE_TOOLKIT_SCROLL_BARS=yes
3143 elif test "${HAVE_XAW3D}" = "yes" || test "${USE_X_TOOLKIT}" = "LUCID"; then
3144 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3145 USE_TOOLKIT_SCROLL_BARS=yes
3147 elif test "${HAVE_GTK}" = "yes"; then
3148 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3149 USE_TOOLKIT_SCROLL_BARS=yes
3150 elif test "${HAVE_NS}" = "yes"; then
3151 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3152 USE_TOOLKIT_SCROLL_BARS=yes
3153 elif test "${HAVE_W32}" = "yes"; then
3154 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3155 USE_TOOLKIT_SCROLL_BARS=yes
3159 dnl See if XIM is available.
3160 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3161 #include <X11/Xlib.h>
3162 #include <X11/Xresource.h>]],
3163 [[XIMProc callback;]])],
3165 AC_DEFINE(HAVE_XIM, 1, [Define to 1 if XIM is available])],
3168 dnl '--with-xim' now controls only the initial value of use_xim at run time.
3170 if test "${with_xim}" != "no"; then
3171 AC_DEFINE(USE_XIM, 1,
3172 [Define to 1 if we should use XIM, if it is available.])
3176 if test "${HAVE_XIM}" != "no"; then
3178 if test "$GCC" = yes; then
3179 CFLAGS="$CFLAGS --pedantic-errors"
3181 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3182 #include <X11/Xlib.h>
3183 #include <X11/Xresource.h>]],
3189 XPointer *client_data;
3191 /* If we're not using GCC, it's probably not XFree86, and this is
3192 probably right, but we can't use something like --pedantic-errors. */
3193 extern Bool XRegisterIMInstantiateCallback(Display*, XrmDatabase, char*,
3194 char*, XIMProc, XPointer*);
3196 (void)XRegisterIMInstantiateCallback(display, db, res_name, res_class, callback,
3198 [emacs_cv_arg6_star=yes])
3199 AH_TEMPLATE(XRegisterIMInstantiateCallback_arg6,
3200 [Define to the type of the 6th arg of XRegisterIMInstantiateCallback,
3201 either XPointer or XPointer*.])dnl
3202 if test "$emacs_cv_arg6_star" = yes; then
3203 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer*])
3205 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer])
3210 ### Start of font-backend (under any platform) section.
3211 # (nothing here yet -- this is a placeholder)
3212 ### End of font-backend (under any platform) section.
3214 ### Start of font-backend (under X11) section.
3215 if test "${HAVE_X11}" = "yes"; then
3216 ## Use -lXft if available, unless '--with-xft=no'.
3218 if test "x${with_x}" = "xno"; then
3222 if test "$with_xft" != no; then
3223 EMACS_CHECK_MODULES([FONTCONFIG], [fontconfig >= 2.2.0])
3224 with_xft=$HAVE_FONTCONFIG
3227 if test "x${with_xft}" != "xno"; then
3229 EMACS_CHECK_MODULES([XFT], [xft >= 0.13.0], [], [HAVE_XFT=no])
3230 ## Because xftfont.c uses XRenderQueryExtension, we also
3231 ## need to link to -lXrender.
3233 AC_CHECK_LIB(Xrender, XRenderQueryExtension, HAVE_XRENDER=yes)
3234 if test "$HAVE_XFT" != no && test "$HAVE_XRENDER" != no; then
3235 OLD_CPPFLAGS="$CPPFLAGS"
3236 OLD_CFLAGS="$CFLAGS"
3238 CPPFLAGS="$CPPFLAGS $XFT_CFLAGS"
3239 CFLAGS="$CFLAGS $XFT_CFLAGS"
3240 XFT_LIBS="-lXrender $XFT_LIBS"
3241 LIBS="$XFT_LIBS $LIBS"
3242 AC_CHECK_HEADER(X11/Xft/Xft.h,
3243 AC_CHECK_LIB(Xft, XftFontOpen, HAVE_XFT=yes, , $XFT_LIBS) , ,
3244 [[#include <X11/X.h>]])
3246 if test "${HAVE_XFT}" = "yes"; then
3247 AC_DEFINE(HAVE_XFT, 1, [Define to 1 if you have the Xft library.])
3249 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $XFT_CFLAGS"
3250 fi # "${HAVE_XFT}" = "yes"
3251 CPPFLAGS=$OLD_CPPFLAGS
3254 fi # "$HAVE_XFT" != no
3255 fi # "x${with_xft}" != "xno"
3257 ## We used to allow building with FreeType and without Xft.
3258 ## However, the ftx font backend driver is not in good shape.
3259 if test "$HAVE_XFT" != "yes"; then
3260 dnl For the "Does Emacs use" message at the end.
3264 dnl Strict linkers fail with
3265 dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
3266 dnl if -lfreetype is not specified.
3267 dnl The following is needed to set FREETYPE_LIBS.
3268 EMACS_CHECK_MODULES([FREETYPE], [freetype2])
3270 test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(libxft requires libfreetype)
3274 if test "${HAVE_FREETYPE}" = "yes"; then
3275 AC_DEFINE(HAVE_FREETYPE, 1,
3276 [Define to 1 if using the freetype and fontconfig libraries.])
3277 if test "${with_libotf}" != "no"; then
3278 EMACS_CHECK_MODULES([LIBOTF], [libotf])
3279 if test "$HAVE_LIBOTF" = "yes"; then
3280 AC_DEFINE(HAVE_LIBOTF, 1, [Define to 1 if using libotf.])
3281 AC_CHECK_LIB(otf, OTF_get_variation_glyphs,
3282 HAVE_OTF_GET_VARIATION_GLYPHS=yes,
3283 HAVE_OTF_GET_VARIATION_GLYPHS=no)
3284 if test "${HAVE_OTF_GET_VARIATION_GLYPHS}" = "yes"; then
3285 AC_DEFINE(HAVE_OTF_GET_VARIATION_GLYPHS, 1,
3286 [Define to 1 if libotf has OTF_get_variation_glyphs.])
3290 dnl FIXME should there be an error if HAVE_FREETYPE != yes?
3291 dnl Does the new font backend require it, or can it work without it?
3295 if test "${HAVE_LIBOTF}" = yes; then
3296 if test "${with_m17n_flt}" != "no"; then
3297 EMACS_CHECK_MODULES([M17N_FLT], [m17n-flt])
3298 if test "$HAVE_M17N_FLT" = "yes"; then
3299 AC_DEFINE(HAVE_M17N_FLT, 1, [Define to 1 if using libm17n-flt.])
3310 ### End of font-backend (under X11) section.
3312 AC_SUBST(FREETYPE_CFLAGS)
3313 AC_SUBST(FREETYPE_LIBS)
3314 AC_SUBST(FONTCONFIG_CFLAGS)
3315 AC_SUBST(FONTCONFIG_LIBS)
3316 AC_SUBST(LIBOTF_CFLAGS)
3317 AC_SUBST(LIBOTF_LIBS)
3318 AC_SUBST(M17N_FLT_CFLAGS)
3319 AC_SUBST(M17N_FLT_LIBS)
3322 if test "${HAVE_X11}" = "yes"; then
3323 if test "${with_cairo}" != "no"; then
3324 CAIRO_REQUIRED=1.12.0
3325 CAIRO_MODULE="cairo >= $CAIRO_REQUIRED"
3326 EMACS_CHECK_MODULES(CAIRO, $CAIRO_MODULE)
3327 if test $HAVE_CAIRO = yes; then
3328 AC_DEFINE(USE_CAIRO, 1, [Define to 1 if using cairo.])
3330 AC_MSG_ERROR([cairo requested but not found.])
3333 CFLAGS="$CFLAGS $CAIRO_CFLAGS"
3334 LIBS="$LIBS $CAIRO_LIBS"
3335 AC_SUBST(CAIRO_CFLAGS)
3336 AC_SUBST(CAIRO_LIBS)
3340 if test "${HAVE_X11}" = "yes"; then
3341 AC_CHECK_HEADER(X11/Xlib-xcb.h,
3342 AC_CHECK_LIB(xcb, xcb_translate_coordinates, HAVE_XCB=yes))
3343 if test "${HAVE_XCB}" = "yes"; then
3344 AC_CHECK_LIB(X11-xcb, XGetXCBConnection, HAVE_X11_XCB=yes)
3345 if test "${HAVE_X11_XCB}" = "yes"; then
3346 AC_DEFINE(USE_XCB, 1,
3347 [Define to 1 if you have the XCB library and X11-XCB library for mixed
3348 X11/XCB programming.])
3349 XCB_LIBS="-lX11-xcb -lxcb"
3355 ### Use -lXpm if available, unless '--with-xpm=no'.
3356 ### mingw32 doesn't use -lXpm, since it loads the library dynamically.
3357 ### The Cygwin-w32 build uses <noX/xpm.h> instead of <X11/xpm.h>, so
3358 ### we need to set LDFLAGS accordingly.
3361 if test "${HAVE_W32}" = "yes" && test "${opsys}" = "cygwin"; then
3362 if test "${with_xpm}" != "no"; then
3363 SAVE_LDFLAGS="$LDFLAGS"
3364 LDFLAGS="$LDFLAGS -L/usr/lib/noX"
3365 AC_CHECK_HEADER(noX/xpm.h,
3366 [AC_CHECK_LIB(Xpm, XpmReadFileToImage, HAVE_XPM=yes)])
3367 if test "${HAVE_XPM}" = "yes"; then
3368 AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
3369 [emacs_cv_cpp_xpm_return_alloc_pixels],
3370 [AC_EGREP_CPP(no_return_alloc_pixels,
3371 [#include "noX/xpm.h"
3372 #ifndef XpmReturnAllocPixels
3373 no_return_alloc_pixels
3375 ], emacs_cv_cpp_xpm_return_alloc_pixels=no,
3376 emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
3378 if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
3380 LDFLAGS="$SAVE_LDFLAGS"
3385 if test "${HAVE_XPM}" = "yes"; then
3386 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3391 if test "${HAVE_X11}" = "yes"; then
3392 dnl Avoid Xpm on AIX unless requested, as it crashes; see Bug#17598.
3393 test "$opsys$with_xpm_set" = aix4-2 && with_xpm=no
3395 if test "${with_xpm}" != "no"; then
3396 AC_CHECK_HEADER(X11/xpm.h,
3397 [AC_CHECK_LIB(Xpm, XpmReadFileToPixmap, HAVE_XPM=yes, , -lX11)])
3398 if test "${HAVE_XPM}" = "yes"; then
3399 AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
3400 [emacs_cv_cpp_xpm_return_alloc_pixels],
3401 [AC_EGREP_CPP(no_return_alloc_pixels,
3402 [#include "X11/xpm.h"
3403 #ifndef XpmReturnAllocPixels
3404 no_return_alloc_pixels
3406 ], emacs_cv_cpp_xpm_return_alloc_pixels=no,
3407 emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
3409 if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
3415 if test "${HAVE_XPM}" = "yes"; then
3416 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3418 elif test "$opsys,$LUCID_LIBW" = aix4-2,-lXaw; then
3419 dnl AIX -lXaw needs -lXpm linked too; see Bug#17598 Message#152.
3424 ### FIXME: Perhaps regroup to minimize code duplication due to MinGW's
3425 ### slightly different requirements wrt image libraries (it doesn't
3426 ### use -lXpm because it loads the xpm shared library dynamically at
3428 if test "${opsys}" = "mingw32"; then
3429 if test "${with_xpm}" != "no"; then
3430 AC_CHECK_HEADER(X11/xpm.h, HAVE_XPM=yes, HAVE_XPM=no, [
3434 if test "${HAVE_XPM}" = "yes"; then
3435 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3441 ### Use -ljpeg if available, unless '--with-jpeg=no'.
3444 if test "${NS_IMPL_COCOA}" = yes; then
3445 : # Cocoa provides its own jpeg support, so do nothing.
3446 elif test "${with_jpeg}" != "no"; then
3447 AC_CACHE_CHECK([for jpeglib 6b or later],
3450 for emacs_cv_jpeglib in yes -ljpeg no; do
3451 case $emacs_cv_jpeglib in
3454 *) LIBS="$LIBS $emacs_cv_jpeglib";;
3458 [[#undef HAVE_STDLIB_H /* Avoid config.h/jpeglib.h collision. */
3459 #include <stdio.h> /* jpeglib.h needs FILE and size_t. */
3460 #include <jpeglib.h>
3462 char verify[JPEG_LIB_VERSION < 62 ? -1 : 1];
3463 struct jpeg_decompress_struct cinfo;
3466 jpeg_create_decompress (&cinfo);
3467 WARNMS (&cinfo, JWRN_JPEG_EOF);
3468 jpeg_destroy_decompress (&cinfo);
3470 [emacs_link_ok=yes],
3473 test $emacs_link_ok = yes && break
3475 if test "$emacs_cv_jpeglib" != no; then
3477 AC_DEFINE([HAVE_JPEG], 1,
3478 [Define to 1 if you have the jpeg library (typically -ljpeg).])
3479 ### mingw32 doesn't use -ljpeg, since it loads the library
3480 ### dynamically when needed, and doesn't want a run-time
3481 ### dependency on the jpeglib DLL.
3482 test "$emacs_cv_jpeglib" != yes && test "${opsys}" != "mingw32" \
3483 && LIBJPEG=$emacs_cv_jpeglib
3490 if test "${with_lcms2}" != "no"; then
3492 AC_SEARCH_LIBS([cmsCreateTransform], [lcms2], [HAVE_LCMS2=yes])
3494 case $ac_cv_search_cmsCreateTransform in
3495 -*) LIBLCMS2=$ac_cv_search_cmsCreateTransform ;;
3498 if test "${HAVE_LCMS2}" = "yes"; then
3499 AC_DEFINE([HAVE_LCMS2], 1, [Define to 1 if you have the lcms2 library (-llcms2).])
3500 ### mingw32 doesn't use -llcms2, since it loads the library dynamically.
3501 if test "${opsys}" = "mingw32"; then
3509 if test "${with_zlib}" != "no"; then
3511 AC_SEARCH_LIBS([inflateEnd], [z], [HAVE_ZLIB=yes])
3513 case $ac_cv_search_inflateEnd in
3514 -*) LIBZ=$ac_cv_search_inflateEnd ;;
3517 if test "${HAVE_ZLIB}" = "yes"; then
3518 AC_DEFINE([HAVE_ZLIB], 1, [Define to 1 if you have the zlib library (-lz).])
3519 ### mingw32 doesn't use -lz, since it loads the library dynamically.
3520 if test "${opsys}" = "mingw32"; then
3526 ### Dynamic modules support
3531 cygwin|mingw32) MODULES_SUFFIX=".dll" ;;
3532 *) MODULES_SUFFIX=".so" ;;
3534 if test "${with_modules}" != "no"; then
3540 cygwin|mingw32|darwin)
3544 # BSD systems have dlopen in libc.
3545 AC_CHECK_FUNC([dlopen], [HAVE_MODULES=yes])
3549 if test "${HAVE_MODULES}" = no; then
3550 AC_MSG_ERROR([Dynamic modules are not supported on your system])
3553 LIBS="$LIBS $LIBMODULES"
3554 AC_CHECK_FUNCS([dladdr dlfunc])
3559 if test "${HAVE_MODULES}" = yes; then
3560 MODULES_OBJ="dynlib.o emacs-module.o"
3561 AC_DEFINE(HAVE_MODULES, 1, [Define to 1 if dynamic modules are enabled])
3562 AC_DEFINE_UNQUOTED(MODULES_SUFFIX, "$MODULES_SUFFIX",
3563 [System extension for dynamic libraries])
3565 AC_SUBST(MODULES_OBJ)
3566 AC_SUBST(LIBMODULES)
3567 AC_SUBST(HAVE_MODULES)
3568 AC_SUBST(MODULES_SUFFIX)
3570 AC_CONFIG_FILES([src/emacs-module.h])
3571 AC_SUBST_FILE([module_env_snippet_25])
3572 AC_SUBST_FILE([module_env_snippet_26])
3573 module_env_snippet_25="$srcdir/src/module-env-25.h"
3574 module_env_snippet_26="$srcdir/src/module-env-26.h"
3576 ### Use -lpng if available, unless '--with-png=no'.
3580 if test "${NS_IMPL_COCOA}" = yes; then
3581 : # Cocoa provides its own png support, so do nothing.
3582 elif test "${with_png}" != no; then
3583 # mingw32 loads the library dynamically.
3584 if test "$opsys" = mingw32; then
3585 AC_CHECK_HEADER([png.h], [HAVE_PNG=yes])
3586 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3587 AC_MSG_CHECKING([for png])
3588 png_cflags=`(libpng-config --cflags) 2>&AS_MESSAGE_LOG_FD` &&
3589 png_ldflags=`(libpng-config --ldflags) 2>&AS_MESSAGE_LOG_FD` || {
3590 # libpng-config does not work; configure by hand.
3591 # Debian unstable as of July 2003 has multiple libpngs, and puts png.h
3592 # in /usr/include/libpng.
3593 if test -r /usr/include/libpng/png.h &&
3594 test ! -r /usr/include/png.h; then
3595 png_cflags=-I/usr/include/libpng
3603 CFLAGS="$CFLAGS $png_cflags"
3604 LIBS="$png_ldflags -lz -lm $LIBS"
3606 [AC_LANG_PROGRAM([[#include <png.h>]],
3607 [[return !png_get_channels (0, 0);]])],
3609 PNG_CFLAGS=`AS_ECHO(["$png_cflags"]) | sed -e "$edit_cflags"`
3611 # $LIBPNG requires explicit -lz in some cases.
3612 # We don't know what those cases are, exactly, so play it safe and
3613 # append -lz to any nonempty $LIBPNG, unless we're already using LIBZ.
3614 if test -n "$LIBPNG" && test -z "$LIBZ"; then
3615 LIBPNG="$LIBPNG -lz"
3619 AC_MSG_RESULT([$HAVE_PNG])
3622 if test $HAVE_PNG = yes; then
3623 AC_DEFINE([HAVE_PNG], [1], [Define to 1 if you have the png library.])
3626 CFLAGS="$CFLAGS $PNG_CFLAGS"
3627 AC_CHECK_DECL([png_longjmp],
3629 [AC_DEFINE([PNG_DEPSTRUCT], [],
3630 [Define to empty to suppress deprecation warnings when building
3631 with --enable-gcc-warnings and with libpng versions before 1.5,
3632 which lack png_longjmp.])],
3638 AC_SUBST(PNG_CFLAGS)
3640 ### Use -ltiff if available, unless '--with-tiff=no'.
3641 ### mingw32 doesn't use -ltiff, since it loads the library dynamically.
3644 if test "${opsys}" = "mingw32"; then
3645 if test "${with_tiff}" != "no"; then
3646 AC_CHECK_HEADER(tiffio.h, HAVE_TIFF=yes, HAVE_TIFF=no)
3648 if test "${HAVE_TIFF}" = "yes"; then
3649 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3651 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3652 if test "${with_tiff}" != "no"; then
3653 AC_CHECK_HEADER(tiffio.h,
3655 # At least one tiff package requires the jpeg library.
3656 if test "${HAVE_JPEG}" = yes; then tifflibs="-ljpeg $tifflibs"; fi
3657 AC_CHECK_LIB(tiff, TIFFGetVersion, HAVE_TIFF=yes, , $tifflibs)])
3660 if test "${HAVE_TIFF}" = "yes"; then
3661 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3662 dnl FIXME -lz -lm, as per libpng?
3668 ### Use -lgif or -lungif if available, unless '--with-gif=no'.
3669 ### mingw32 doesn't use -lgif/-lungif, since it loads the library dynamically.
3672 if test "${opsys}" = "mingw32"; then
3673 if test "${with_gif}" != "no"; then
3674 AC_CHECK_HEADER(gif_lib.h, HAVE_GIF=yes, HAVE_GIF=no)
3676 if test "${HAVE_GIF}" = "yes"; then
3677 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3679 elif test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no" \
3680 || test "${HAVE_W32}" = "yes"; then
3681 AC_CHECK_HEADER(gif_lib.h,
3682 # EGifPutExtensionLast only exists from version libungif-4.1.0b1.
3683 # Earlier versions can crash Emacs, but version 5.0 removes EGifPutExtensionLast.
3684 [AC_CHECK_LIB(gif, GifMakeMapObject, HAVE_GIF=yes,
3685 [AC_CHECK_LIB(gif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=maybe)])])
3687 if test "$HAVE_GIF" = yes; then
3689 elif test "$HAVE_GIF" = maybe; then
3690 # If gif_lib.h but no libgif, try libungif.
3691 AC_CHECK_LIB(ungif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=no)
3692 test "$HAVE_GIF" = yes && LIBGIF=-lungif
3695 if test "${HAVE_GIF}" = "yes"; then
3696 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3701 dnl Check for required libraries.
3704 if test "${HAVE_X11}" = "yes"; then
3705 test "${with_xpm}" != "no" && test "${HAVE_XPM}" != "yes" &&
3706 MISSING="libXpm" && WITH_NO="--with-xpm=no"
3707 test "${with_jpeg}" != "no" && test "${HAVE_JPEG}" != "yes" &&
3708 MISSING="$MISSING libjpeg" && WITH_NO="$WITH_NO --with-jpeg=no"
3709 test "${with_png}" != "no" && test "${HAVE_PNG}" != "yes" &&
3710 MISSING="$MISSING libpng" && WITH_NO="$WITH_NO --with-png=no"
3711 test "${with_gif}" != "no" && test "${HAVE_GIF}" != "yes" &&
3712 MISSING="$MISSING libgif/libungif" && WITH_NO="$WITH_NO --with-gif=no"
3713 test "${with_tiff}" != "no" && test "${HAVE_TIFF}" != "yes" &&
3714 MISSING="$MISSING libtiff" && WITH_NO="$WITH_NO --with-tiff=no"
3716 test "${with_gnutls}" != "no" && test "${HAVE_GNUTLS}" != "yes" &&
3717 MISSING="$MISSING gnutls" && WITH_NO="$WITH_NO --with-gnutls=no"
3718 if test "X${MISSING}" != X; then
3719 AC_MSG_ERROR([The following required libraries were not found:
3721 Maybe some development libraries/packages are missing?
3722 If you don't want to link with them give
3724 as options to configure])
3727 ### Use -lgpm if available, unless '--with-gpm=no'.
3730 if test "${with_gpm}" != "no"; then
3731 AC_CHECK_HEADER(gpm.h,
3732 [AC_CHECK_LIB(gpm, Gpm_Open, HAVE_GPM=yes)])
3734 if test "${HAVE_GPM}" = "yes"; then
3735 AC_DEFINE(HAVE_GPM, 1, [Define to 1 if you have the gpm library (-lgpm).])
3741 dnl Check for malloc/malloc.h on darwin
3742 AC_CHECK_HEADERS_ONCE(malloc/malloc.h)
3745 ### Use NeXTstep API to implement GUI.
3746 if test "${HAVE_NS}" = "yes"; then
3747 AC_DEFINE(HAVE_NS, 1, [Define to 1 if you are using the NeXTstep API, either GNUstep or Cocoa on macOS.])
3748 if test "${NS_IMPL_COCOA}" = "yes"; then
3749 AC_DEFINE(NS_IMPL_COCOA, 1, [Define to 1 if you are using NS windowing under macOS.])
3751 if test "${NS_IMPL_GNUSTEP}" = "yes"; then
3752 AC_DEFINE(NS_IMPL_GNUSTEP, 1, [Define to 1 if you are using NS windowing under GNUstep.])
3753 if test $NS_GNUSTEP_CONFIG != yes; then
3754 # See also .m.o rule in src/Makefile.in. */
3755 # FIXME: are all these flags really needed? Document here why. */
3756 GNUSTEP_CFLAGS="-D_REENTRANT -fPIC -fno-strict-aliasing -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
3757 ## Extra CFLAGS applied to src/*.m files.
3758 GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -fgnu-runtime -Wno-import -fconstant-string-class=NSConstantString -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGSWARN -DGSDIAGNOSE"
3764 ### Use session management (-lSM -lICE) if available
3767 if test "${HAVE_X11}" = "yes"; then
3768 AC_CHECK_HEADER(X11/SM/SMlib.h,
3769 [AC_CHECK_LIB(SM, SmcOpenConnection, HAVE_X_SM=yes, , -lICE)])
3771 if test "${HAVE_X_SM}" = "yes"; then
3772 AC_DEFINE(HAVE_X_SM, 1, [Define to 1 if you have the SM library (-lSM).])
3778 ### Use XRandr (-lXrandr) if available
3780 if test "${HAVE_X11}" = "yes"; then
3781 XRANDR_REQUIRED=1.2.2
3782 XRANDR_MODULES="xrandr >= $XRANDR_REQUIRED"
3783 EMACS_CHECK_MODULES([XRANDR], [$XRANDR_MODULES])
3784 if test $HAVE_XRANDR = no; then
3785 # Test old way in case pkg-config doesn't have it (older machines).
3786 # Include Xrender.h by hand to work around bug in older Xrandr.h
3787 # (e.g. RHEL5) and silence (harmless) configure warning (bug#18465).
3788 AC_CHECK_HEADER(X11/extensions/Xrandr.h,
3789 [AC_CHECK_LIB(Xrandr, XRRGetScreenResources, HAVE_XRANDR=yes)],
3790 [], [AC_INCLUDES_DEFAULT
3791 #include <X11/extensions/Xrender.h>])
3792 if test $HAVE_XRANDR = yes; then
3793 XRANDR_LIBS=-lXrandr
3796 if test $HAVE_XRANDR = yes; then
3797 AC_DEFINE(HAVE_XRANDR, 1, [Define to 1 if you have the XRandr extension.])
3800 AC_SUBST(XRANDR_CFLAGS)
3801 AC_SUBST(XRANDR_LIBS)
3803 ### Use Xinerama (-lXinerama) if available
3805 if test "${HAVE_X11}" = "yes"; then
3806 XINERAMA_REQUIRED=1.0.2
3807 XINERAMA_MODULES="xinerama >= $XINERAMA_REQUIRED"
3808 EMACS_CHECK_MODULES([XINERAMA], [$XINERAMA_MODULES])
3809 if test $HAVE_XINERAMA = no; then
3810 # Test old way in case pkg-config doesn't have it (older machines).
3811 AC_CHECK_HEADER(X11/extensions/Xinerama.h,
3812 [AC_CHECK_LIB(Xinerama, XineramaQueryExtension, HAVE_XINERAMA=yes)])
3813 if test $HAVE_XINERAMA = yes; then
3814 XINERAMA_LIBS=-lXinerama
3817 if test $HAVE_XINERAMA = yes; then
3818 AC_DEFINE(HAVE_XINERAMA, 1, [Define to 1 if you have the Xinerama extension.])
3821 AC_SUBST(XINERAMA_CFLAGS)
3822 AC_SUBST(XINERAMA_LIBS)
3824 ### Use Xfixes (-lXfixes) if available
3826 if test "${HAVE_X11}" = "yes"; then
3827 XFIXES_REQUIRED=4.0.0
3828 XFIXES_MODULES="xfixes >= $XFIXES_REQUIRED"
3829 EMACS_CHECK_MODULES([XFIXES], [$XFIXES_MODULES])
3830 if test $HAVE_XFIXES = no; then
3831 # Test old way in case pkg-config doesn't have it (older machines).
3832 AC_CHECK_HEADER(X11/extensions/Xfixes.h,
3833 [AC_CHECK_LIB(Xfixes, XFixesHideCursor, HAVE_XFIXES=yes)])
3834 if test $HAVE_XFIXES = yes; then
3835 XFIXES_LIBS=-lXfixes
3838 if test $HAVE_XFIXES = yes; then
3839 AC_DEFINE(HAVE_XFIXES, 1, [Define to 1 if you have the Xfixes extension.])
3842 AC_SUBST(XFIXES_CFLAGS)
3843 AC_SUBST(XFIXES_LIBS)
3845 ### Use Xdbe (-lXdbe) if available
3847 if test "${HAVE_X11}" = "yes"; then
3848 AC_CHECK_HEADER(X11/extensions/Xdbe.h,
3849 [AC_CHECK_LIB(Xext, XdbeAllocateBackBufferName, HAVE_XDBE=yes)],
3851 [#include <X11/Xlib.h>
3853 if test $HAVE_XDBE = yes; then
3856 if test $HAVE_XDBE = yes; then
3857 AC_DEFINE(HAVE_XDBE, 1, [Define to 1 if you have the Xdbe extension.])
3860 AC_SUBST(XDBE_CFLAGS)
3863 ### Use libxml (-lxml2) if available
3864 ### mingw32 doesn't use -lxml2, since it loads the library dynamically.
3866 if test "${with_xml2}" != "no"; then
3867 ### I'm not sure what the version number should be, so I just guessed.
3868 EMACS_CHECK_MODULES([LIBXML2], [libxml-2.0 > 2.6.17])
3869 # Built-in libxml2 on OS X 10.8 lacks libxml-2.0.pc.
3870 if test "${HAVE_LIBXML2}" != "yes" && test "$opsys" = "darwin"; then
3871 SAVE_CPPFLAGS="$CPPFLAGS"
3872 if test -z "$xcsdkdir" -a -n "$XCRUN" -a ! -d /usr/include; then
3873 dnl /usr/include is not found. Try Xcode SDK dir if it is sane.
3874 xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
3876 *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
3880 CPPFLAGS="$CPPFLAGS -I$xcsdkdir/usr/include/libxml2"
3881 AC_CHECK_HEADER(libxml/HTMLparser.h,
3882 [AC_CHECK_DECL(HTML_PARSE_RECOVER, HAVE_LIBXML2=yes, ,
3883 [#include <libxml/HTMLparser.h>])])
3884 CPPFLAGS="$SAVE_CPPFLAGS"
3885 if test "${HAVE_LIBXML2}" = "yes"; then
3886 LIBXML2_CFLAGS="-I'$xcsdkdir/usr/include/libxml2'"
3887 LIBXML2_LIBS="-lxml2"
3890 if test "${HAVE_LIBXML2}" = "yes"; then
3891 if test "${opsys}" != "mingw32"; then
3892 AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no,
3897 if test "${HAVE_LIBXML2}" = "yes"; then
3898 AC_DEFINE(HAVE_LIBXML2, 1, [Define to 1 if you have the libxml library (-lxml2).])
3905 AC_SUBST(LIBXML2_LIBS)
3906 AC_SUBST(LIBXML2_CFLAGS)
3910 if test ! "$with_mailutils"; then
3911 # Check for mail-locking functions in a "mail" library. Probably this should
3912 # have the same check as for liblockfile below.
3913 AC_CHECK_LIB([mail], [maillock], [have_mail=yes], [have_mail=no])
3914 if test $have_mail = yes; then
3916 AC_DEFINE([HAVE_LIBMAIL], [1],
3917 [Define to 1 if you have the 'mail' library (-lmail).])
3920 LIBS="$LIBS_MAIL $LIBS"
3921 AC_CHECK_FUNCS([touchlock])
3924 dnl Debian, at least:
3925 AC_CHECK_LIB([lockfile], [maillock], [have_lockfile=yes], [have_lockfile=no])
3926 if test $have_lockfile = yes; then
3927 LIBS_MAIL=-llockfile
3928 AC_DEFINE([HAVE_LIBLOCKFILE], [1],
3929 [Define to 1 if you have the 'lockfile' library (-llockfile).])
3931 # If we have the shared liblockfile, assume we must use it for mail
3932 # locking (e.g. Debian). If we couldn't link against liblockfile
3933 # (no liblockfile.a installed), ensure that we don't need to.
3934 dnl This works for files generally, not just executables.
3935 dnl Should we look elsewhere for it? Maybe examine /etc/ld.so.conf?
3936 AC_CHECK_PROG([liblockfile], [liblockfile.so], [yes], [no],
3937 [/usr/lib:/lib:/usr/local/lib:$LD_LIBRARY_PATH])
3938 if test "$ac_cv_prog_liblockfile" = yes; then
3939 AC_MSG_ERROR([Shared liblockfile found but can't link against it.
3940 This probably means that movemail could lose mail.
3941 There may be a 'development' package to install containing liblockfile.])
3944 AC_CHECK_HEADERS([maillock.h])
3946 ## Define MAIL_USE_FLOCK (or LOCKF) if the mailer uses flock (or lockf) to
3947 ## interlock access to the mail spool. The alternative is a lock file named
3948 ## /usr/spool/mail/$USER.lock.
3951 aix4-2) mail_lock="lockf" ;;
3953 gnu|freebsd|dragonfly|netbsd|openbsd|darwin) mail_lock="flock" ;;
3955 ## On GNU/Linux systems, both methods are used by various mail programs.
3956 ## I assume most people are using newer mailers that have heard of flock.
3957 ## Change this if you need to.
3958 ## Debian contains a patch which says: "On Debian/GNU/Linux systems,
3959 ## configure gets the right answers, and that means *NOT* using flock.
3960 ## Using flock is guaranteed to be the wrong thing. See Debian Policy
3961 ## for details." and then uses '#ifdef DEBIAN'. Unfortunately the
3962 ## Debian maintainer hasn't provided a clean fix for Emacs.
3963 ## movemail.c will use 'maillock' when MAILDIR, HAVE_LIBMAIL and
3964 ## HAVE_MAILLOCK_H are defined, so the following appears to be the
3965 ## correct logic. -- fx
3966 ## We must check for HAVE_LIBLOCKFILE too, as movemail does.
3967 ## liblockfile is a Free Software replacement for libmail, used on
3968 ## Debian systems and elsewhere. -rfr.
3971 if test $have_mail = yes || test $have_lockfile = yes; then
3972 test $ac_cv_header_maillock_h = yes && mail_lock=no
3976 mail_lock="none-needed" ;;
3980 flock) AC_DEFINE([MAIL_USE_FLOCK], [1],
3981 [Define if the mailer uses flock to interlock the mail spool.]);;
3983 lockf) AC_DEFINE([MAIL_USE_LOCKF], [1],
3984 [Define if the mailer uses lockf to interlock the mail spool.]);;
3988 *) BLESSMAIL_TARGET="need-blessmail" ;;
3991 AC_SUBST([BLESSMAIL_TARGET])
3992 AC_SUBST([LIBS_MAIL])
3995 LIBS="$LIB_PTHREAD $LIB_MATH $LIBS"
3996 AC_CHECK_FUNCS(accept4 fchdir gethostname \
3997 getrusage get_current_dir_name \
3998 lrand48 random rint trunc \
3999 select getpagesize setlocale newlocale \
4000 getrlimit setrlimit shutdown \
4001 pthread_sigmask strsignal setitimer \
4002 sendto recvfrom getsockname getifaddrs freeifaddrs \
4004 getpwent endpwent getgrent endgrent \
4005 cfmakeraw cfsetspeed __executable_start log2 prctl)
4008 dnl No need to check for posix_memalign if aligned_alloc works.
4009 AC_CHECK_FUNCS([aligned_alloc posix_memalign], [break])
4010 AC_CHECK_DECLS([aligned_alloc], [], [], [[#include <stdlib.h>]])
4012 dnl Cannot use AC_CHECK_FUNCS
4013 AC_CACHE_CHECK([for __builtin_frame_address],
4014 [emacs_cv_func___builtin_frame_address],
4015 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_frame_address (0);])],
4016 [emacs_cv_func___builtin_frame_address=yes],
4017 [emacs_cv_func___builtin_frame_address=no])])
4018 if test $emacs_cv_func___builtin_frame_address = yes; then
4019 AC_DEFINE([HAVE___BUILTIN_FRAME_ADDRESS], 1,
4020 [Define to 1 if you have the '__builtin_frame_address' function.])
4022 AC_CACHE_CHECK([for __builtin_unwind_init],
4023 emacs_cv_func___builtin_unwind_init,
4024 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_unwind_init ();])],
4025 emacs_cv_func___builtin_unwind_init=yes,
4026 emacs_cv_func___builtin_unwind_init=no)])
4027 if test $emacs_cv_func___builtin_unwind_init = yes; then
4028 AC_DEFINE(HAVE___BUILTIN_UNWIND_INIT, 1,
4029 [Define to 1 if you have the '__builtin_unwind_init' function.])
4032 AC_CHECK_HEADERS_ONCE(sys/un.h)
4037 AC_CHECK_FUNCS(grantpt)
4039 # PTY-related GNU extensions.
4040 AC_CHECK_FUNCS(getpt posix_openpt)
4042 dnl Run a test program that contains a call to tputs, a call that is
4043 dnl never executed. This tests whether a pre-'main' dynamic linker
4044 dnl works with the library. It's too much trouble to actually call
4045 dnl tputs in the test program, due to portability hassles. When
4046 dnl cross-compiling, assume the test program will run if it links.
4047 AC_DEFUN([tputs_link_source], [
4049 [[extern void tputs (const char *, int, int (*)(int));
4050 int main (int argc, char **argv)
4053 tputs (argv[0], 0, 0);
4057 # Check this now, so that we will NOT find the above functions in ncurses.
4058 # That is because we have not set up to link ncurses in lib-src.
4059 # It's better to believe a function is not available
4060 # than to expect to find it in ncurses.
4061 # Also we need tputs and friends to be able to build at all.
4062 AC_CACHE_CHECK([for library containing tputs], [emacs_cv_tputs_lib],
4063 [if test "${opsys}" = "mingw32"; then
4064 emacs_cv_tputs_lib='none required'
4066 # curses precedes termcap because of AIX (Bug#9736#35) and OpenIndiana.
4067 for tputs_library in '' tinfo ncurses terminfo curses termcap; do
4069 if test -z "$tputs_library"; then
4070 emacs_cv_tputs_lib='none required'
4072 emacs_cv_tputs_lib=-l$tputs_library
4073 LIBS="$emacs_cv_tputs_lib $LIBS"
4075 AC_RUN_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no],
4076 [AC_LINK_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no])])
4078 if test "X$emacs_cv_tputs_lib" != Xno; then
4083 AS_CASE(["$emacs_cv_tputs_lib"],
4084 [no], [AC_MSG_ERROR([The required function 'tputs' was not found in any library.
4085 The following libraries were tried (in order):
4086 libtinfo, libncurses, libterminfo, libcurses, libtermcap
4087 Please try installing whichever of these libraries is most appropriate
4088 for your system, together with its header files.
4089 For example, a libncurses-dev(el) or similar package.])],
4090 [-l*], [LIBS_TERMCAP=$emacs_cv_tputs_lib],
4091 [*], [LIBS_TERMCAP=])
4093 ## Use termcap instead of terminfo?
4094 ## Only true for: freebsd < 40000, ms-w32, msdos, netbsd < 599002500.
4096 ## FIXME? In the cases below where we unconditionally set
4097 ## LIBS_TERMCAP="-lncurses", this overrides LIBS_TERMCAP = -ltinfo,
4098 ## if that was found above to have tputs.
4099 ## Should we use the gnu* logic everywhere?
4101 ## darwin: Prevents crashes when running Emacs in Terminal.app under 10.2.
4102 ## The ncurses library has been moved out of the System framework in
4103 ## Mac OS X 10.2. So if configure detects it, set the command-line
4104 ## option to use it.
4105 darwin) LIBS_TERMCAP="-lncurses" ;;
4107 gnu*) test -z "$LIBS_TERMCAP" && LIBS_TERMCAP="-lncurses" ;;
4110 AC_MSG_CHECKING([whether FreeBSD is new enough to use terminfo])
4111 AC_CACHE_VAL(emacs_cv_freebsd_terminfo,
4112 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <osreldate.h>]],
4113 [[#if __FreeBSD_version < 400000
4116 ]])], emacs_cv_freebsd_terminfo=yes, emacs_cv_freebsd_terminfo=no)])
4118 AC_MSG_RESULT($emacs_cv_freebsd_terminfo)
4120 if test $emacs_cv_freebsd_terminfo = yes; then
4121 LIBS_TERMCAP="-lncurses"
4124 LIBS_TERMCAP="-ltermcap"
4134 if test "x$LIBS_TERMCAP" != "x-lterminfo"; then
4136 LIBS_TERMCAP="-ltermcap"
4140 openbsd | dragonfly) LIBS_TERMCAP="-lncurses" ;;
4142 ## hpux: Make sure we get select from libc rather than from libcurses
4143 ## because libcurses on HPUX 10.10 has a broken version of select.
4144 ## We used to use -lc -lcurses, but this may be cleaner.
4145 ## FIXME? But TERMINFO = yes on hpux (it used to be explicitly
4146 # set that way, now it uses the default). Isn't this a contradiction?
4147 hpux*) LIBS_TERMCAP="-ltermcap" ;;
4151 TERMCAP_OBJ=tparam.o
4152 if test $TERMINFO = yes; then
4153 AC_DEFINE(TERMINFO, 1, [Define to 1 if you use terminfo instead of termcap.])
4154 TERMCAP_OBJ=terminfo.o
4156 if test "X$LIBS_TERMCAP" = "X-lncurses"; then
4157 AC_DEFINE(USE_NCURSES, 1, [Define to 1 if you use ncurses.])
4159 AC_SUBST(LIBS_TERMCAP)
4160 AC_SUBST(TERMCAP_OBJ)
4162 # GNU/Linux-specific timer functions.
4163 AC_CACHE_CHECK([for timerfd interface], [emacs_cv_have_timerfd],
4165 [AC_LANG_PROGRAM([[#include <sys/timerfd.h>
4167 [[timerfd_create (CLOCK_REALTIME,
4168 TFD_CLOEXEC | TFD_NONBLOCK);
4169 timerfd_settime (0, TFD_TIMER_ABSTIME, 0, 0);]])],
4170 [emacs_cv_have_timerfd=yes],
4171 [emacs_cv_have_timerfd=no])])
4172 if test "$emacs_cv_have_timerfd" = yes; then
4173 AC_DEFINE([HAVE_TIMERFD], 1,
4174 [Define to 1 if timerfd functions are supported as in GNU/Linux.])
4177 # Alternate stack for signal handlers.
4178 AC_CACHE_CHECK([whether signals can be handled on alternate stack],
4179 [emacs_cv_alternate_stack],
4181 [AC_LANG_PROGRAM([[#include <signal.h>
4184 struct sigaction sa;
4185 ss.ss_sp = malloc (SIGSTKSZ);
4186 ss.ss_size = SIGSTKSZ;
4187 sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
4188 sigaltstack (&ss, 0);
4189 sigaction (SIGSEGV, &sa, 0);]])],
4190 [emacs_cv_alternate_stack=yes],
4191 [emacs_cv_alternate_stack=no])])
4193 # Do we need the Hesiod library to provide the support routines?
4194 dnl FIXME? Should we be skipping this on Darwin too?
4197 if test "$with_hesiod" != no ; then
4198 # Don't set $LIBS here -- see comments above. FIXME which comments?
4200 AC_CHECK_FUNC(res_send, , [AC_CHECK_FUNC(__res_send, ,
4201 [AC_CHECK_LIB(resolv, res_send, resolv=yes,
4202 [AC_CHECK_LIB(resolv, __res_send, resolv=yes)])])])
4203 if test "$resolv" = yes ; then
4209 AC_CHECK_FUNC(hes_getmailhost, , [AC_CHECK_LIB(hesiod, hes_getmailhost,
4210 hesiod=yes, :, $RESOLVLIB)])
4212 if test x"$hesiod" = xyes; then
4214 LIBRESOLV=$RESOLVLIB
4220 # These tell us which Kerberos-related libraries to use.
4227 if test "${with_kerberos}" != no; then
4229 AC_CHECK_LIB(com_err, com_err, have_com_err=yes, have_com_err=no)
4230 if test $have_com_err = yes; then
4231 COM_ERRLIB=-lcom_err
4232 LIBS="$COM_ERRLIB $LIBS"
4234 AC_CHECK_LIB(crypto, mit_des_cbc_encrypt, have_crypto=yes, have_crypto=no)
4235 if test $have_crypto = yes; then
4237 LIBS="$CRYPTOLIB $LIBS"
4239 AC_CHECK_LIB(k5crypto, mit_des_cbc_encrypt, have_k5crypto=yes, have_k5crypto=no)
4240 if test $have_k5crypto = yes; then
4241 CRYPTOLIB=-lk5crypto
4242 LIBS="$CRYPTOLIB $LIBS"
4244 AC_CHECK_LIB(krb5, krb5_init_context, have_krb5=yes, have_krb5=no)
4245 if test $have_krb5=yes; then
4247 LIBS="$KRB5LIB $LIBS"
4249 dnl FIXME Simplify. Does not match 22 logic, thanks to default_off?
4250 if test "${with_kerberos5}" = no; then
4251 AC_CHECK_LIB(des425, des_cbc_encrypt, have_des425=yes, have_des425=no )
4252 if test $have_des425 = yes; then
4254 LIBS="$DESLIB $LIBS"
4256 AC_CHECK_LIB(des, des_cbc_encrypt, have_des=yes, have_des=no)
4257 if test $have_des = yes; then
4259 LIBS="$DESLIB $LIBS"
4262 AC_CHECK_LIB(krb4, krb_get_cred, have_krb4=yes, have_krb4=no)
4263 if test $have_krb4 = yes; then
4265 LIBS="$KRB4LIB $LIBS"
4267 AC_CHECK_LIB(krb, krb_get_cred, have_krb=yes, have_krb=no)
4268 if test $have_krb = yes; then
4270 LIBS="$KRB4LIB $LIBS"
4275 if test "${with_kerberos5}" != no; then
4276 AC_CHECK_HEADERS(krb5.h,
4277 [AC_CHECK_MEMBERS([krb5_error.text, krb5_error.e_text],,,
4278 [#include <krb5.h>])])
4280 AC_CHECK_HEADERS(krb.h,,
4281 [AC_CHECK_HEADERS(kerberosIV/krb.h,,
4282 [AC_CHECK_HEADERS(kerberos/krb.h)])])
4284 AC_CHECK_HEADERS(com_err.h)
4288 AC_SUBST(COM_ERRLIB)
4294 AC_CHECK_HEADERS(valgrind/valgrind.h)
4296 AC_CHECK_MEMBERS([struct unipair.unicode], [], [], [[#include <linux/kd.h>]])
4298 AC_CHECK_FUNCS_ONCE([sbrk])
4301 AC_CHECK_FUNC(socket, , ok_so_far=no)
4302 if test $ok_so_far = yes; then
4303 AC_CHECK_HEADER(netinet/in.h, , ok_so_far=no)
4305 if test $ok_so_far = yes; then
4306 AC_CHECK_HEADER(arpa/inet.h, , ok_so_far=no)
4308 if test $ok_so_far = yes; then
4309 dnl Fixme: Not used. Should this be HAVE_SOCKETS?
4310 AC_DEFINE(HAVE_INET_SOCKETS, 1,
4311 [Define to 1 if you have inet sockets.])
4316 AC_CHECK_FUNCS(snprintf)
4318 dnl Check for glib. This differs from other library checks in that
4319 dnl Emacs need not link to glib unless some other library is already
4320 dnl linking to glib. Although glib provides no facilities that Emacs
4321 dnl needs for its own purposes, when glib is present Emacs needs to
4322 dnl use primitives like g_main_context_query to avoid clashing with
4323 dnl glib at a low level.
4325 dnl Check this late, since it depends on $GTK_CFLAGS etc.
4327 AC_CACHE_CHECK([whether GLib is linked in], [emacs_cv_links_glib],
4328 [OLDCFLAGS="$CFLAGS"
4330 CFLAGS="$CFLAGS $GTK_CFLAGS $RSVG_CFLAGS $DBUS_CFLAGS $SETTINGS_CFLAGS"
4331 LIBS="$LIBS $GTK_LIBS $RSVG_LIBS $DBUS_LIBS $SETTINGS_LIBS"
4332 CFLAGS="$CFLAGS $NOTIFY_CFLAGS $CAIRO_CFLAGS"
4333 LIBS="$LIBS $NOTIFY_LIBS $CAIRO_LIBS"
4334 AC_LINK_IFELSE([AC_LANG_PROGRAM(
4337 [[g_print ("Hello world");]])],
4338 [emacs_cv_links_glib=yes],
4339 [emacs_cv_links_glib=no])
4342 if test "${emacs_cv_links_glib}" = "yes"; then
4343 AC_DEFINE(HAVE_GLIB, 1, [Define to 1 if GLib is linked in.])
4344 if test "$HAVE_NS" = no;then
4350 dnl Adapted from Haible's version.
4351 AC_CACHE_CHECK([for nl_langinfo and CODESET], emacs_cv_langinfo_codeset,
4352 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
4353 [[char* cs = nl_langinfo(CODESET);]])],
4354 emacs_cv_langinfo_codeset=yes,
4355 emacs_cv_langinfo_codeset=no)
4357 if test $emacs_cv_langinfo_codeset = yes; then
4358 AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
4359 [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
4364 dnl Fixme: AC_SYS_POSIX_TERMIOS should probably be used, but it's not clear
4365 dnl how the tty code is related to POSIX and/or other versions of termios.
4366 dnl The following looks like a useful start.
4368 dnl AC_SYS_POSIX_TERMIOS
4369 dnl if test $ac_cv_sys_posix_termios = yes; then
4370 dnl AC_DEFINE(HAVE_TERMIOS, 1, [Define to 1 if you have POSIX-style functions
4371 dnl and macros for terminal control.])
4372 dnl AC_DEFINE(HAVE_TCATTR, 1, [Define to 1 if you have tcgetattr and tcsetattr.])
4375 dnl Turned on June 1996 supposing nobody will mind it.
4376 dnl MinGW emulates passwd database, so this feature doesn't make sense there.
4377 if test "${opsys}" != "mingw32"; then
4378 AC_DEFINE(AMPERSAND_FULL_NAME, 1, [Define to use the convention that &
4379 in the full name stands for the login id.])
4382 dnl Everybody supports this, except MS.
4383 dnl Seems like the kind of thing we should be testing for, though.
4384 ## Note: PTYs are broken on darwin <6. Use at your own risk.
4385 if test "${opsys}" != "mingw32"; then
4386 AC_DEFINE(HAVE_PTYS, 1, [Define if the system supports pty devices.])
4389 dnl Everybody supports this, except MS-DOS.
4390 dnl Seems like the kind of thing we should be testing for, though.
4391 dnl Compare with HAVE_INET_SOCKETS (which is unused...) above.
4392 AC_DEFINE(HAVE_SOCKETS, 1, [Define if the system supports
4393 4.2-compatible sockets.])
4395 AH_TEMPLATE(INTERNAL_TERMINAL, [This is substituted when $TERM is "internal".])
4397 AH_TEMPLATE(NULL_DEVICE, [Name of the file to open to get
4398 a null file, or a data sink.])
4399 if test "${opsys}" = "mingw32"; then
4400 AC_DEFINE(NULL_DEVICE, ["NUL:"])
4402 AC_DEFINE(NULL_DEVICE, ["/dev/null"])
4405 if test "${opsys}" = "mingw32"; then
4410 AC_DEFINE_UNQUOTED(SEPCHAR, ['$SEPCHAR'], [Character that separates PATH elements.])
4411 dnl This is for MinGW, and is used in test/Makefile.in.
4412 dnl The MSYS Bash has heuristics for replacing ':' with ';' when it
4413 dnl decides that a command-line argument to be passed to a MinGW program
4414 dnl is a PATH-style list of directories. But that heuristics plays it
4415 dnl safe, and only does the replacement when it is _absolutely_ sure it
4416 dnl sees a colon-separated list of file names; e.g. ":." is left alone,
4417 dnl which breaks in-tree builds. So we do this manually instead.
4418 dnl Note that we cannot rely on PATH_SEPARATOR, as that one will always
4419 dnl be computed as ':' in MSYS Bash.
4422 dnl Everybody supports this, except MS-DOS.
4423 AC_DEFINE(subprocesses, 1, [Define to enable asynchronous subprocesses.])
4425 AC_DEFINE(USER_FULL_NAME, [pw->pw_gecos], [How to get a user's full name.])
4428 AC_DEFINE(DIRECTORY_SEP, ['/'],
4429 [Character that separates directories in a file name.])
4431 if test "${opsys}" = "mingw32"; then
4432 AC_DEFINE(IS_DEVICE_SEP(_c_), [((_c_) == ':')],
4433 [Returns true if character is a device separator.])
4435 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == '/' || (_c_) == '\\')],
4436 [Returns true if character is a directory separator.])
4438 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP(_c_))],
4439 [Returns true if character is any form of separator.])
4441 AC_DEFINE(IS_DEVICE_SEP(_c_), 0,
4442 [Returns true if character is a device separator.])
4444 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == DIRECTORY_SEP)],
4445 [Returns true if character is a directory separator.])
4447 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_))],
4448 [Returns true if character is any form of separator.])
4451 if test "$USE_X_TOOLKIT" != "none"; then
4455 dnl Assar Westerlund <assar@sics.se> says this is necessary
4456 dnl for HP-UX 10.20, and that it works for HP-UX 0 as well.
4460 if test "$have_editres" != no && test ! -z "$LIBXMU"; then
4462 dnl See libXmu.a check above.
4463 if test x$HAVE_X11XTR6 = xyes; then
4464 LIBS="-lXt -lSM -lICE $LIBXMU"
4466 OTHERLIBS="-lXt -$LIBXMU"
4469 [#include <X11/Intrinsic.h>
4470 #include <X11/Xmu/Editres.h>],
4471 [_XEditResCheckMessages (0, 0, 0, 0);],
4472 [AC_DEFINE([X_TOOLKIT_EDITRES], 1,
4473 [Define to 1 if we should use XEditRes.])])
4480 dnl Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
4481 dnl instead, there's a system variable _sys_nsig. Unfortunately, we
4482 dnl need the constant to dimension an array. So wire in the appropriate
4484 AC_DEFINE(NSIG_MINIMUM, 32, [Minimum value of NSIG.])
4488 emacs_broken_SIGIO=no
4491 dnl SIGIO exists, but the feature doesn't work in the way Emacs needs.
4492 hpux* | nacl | openbsd | sol2* | unixware )
4493 emacs_broken_SIGIO=yes
4497 dnl On AIX Emacs uses the gmalloc.c malloc implementation. But given
4498 dnl the way this system works, libc functions that return malloced
4499 dnl memory use the libc malloc implementation. Calling xfree or
4500 dnl xrealloc on the results of such functions results in a crash.
4502 dnl One solution for this could be to define SYSTEM_MALLOC in configure,
4503 dnl but that does not currently work on this system.
4505 dnl It is possible to completely override the malloc implementation on
4506 dnl AIX, but that involves putting the malloc functions in a shared
4507 dnl library and setting the MALLOCTYPE environment variable to point to
4508 dnl that shared library.
4510 dnl Emacs currently calls xrealloc on the results of get_current_dir name,
4511 dnl to avoid a crash just use the Emacs implementation for that function.
4513 dnl FIXME We could change the AC_CHECK_FUNCS call near the start
4514 dnl of this file, so that we do not check for get_current_dir_name
4515 dnl on AIX. But that might be fragile if something else ends
4516 dnl up testing for get_current_dir_name as a dependency.
4517 AC_DEFINE(BROKEN_GET_CURRENT_DIR_NAME, 1, [Define if
4518 get_current_dir_name should not be used.])
4522 dnl Circumvent a bug in FreeBSD. In the following sequence of
4523 dnl writes/reads on a PTY, read(2) returns bogus data:
4525 dnl write(2) 1022 bytes
4526 dnl write(2) 954 bytes, get EAGAIN
4527 dnl read(2) 1024 bytes in process_read_output
4528 dnl read(2) 11 bytes in process_read_output
4530 dnl That is, read(2) returns more bytes than have ever been written
4531 dnl successfully. The 1033 bytes read are the 1022 bytes written
4532 dnl successfully after processing (for example with CRs added if the
4533 dnl terminal is set up that way which it is here). The same bytes will
4534 dnl be seen again in a later read(2), without the CRs.
4535 AC_DEFINE(BROKEN_PTY_READ_AFTER_EAGAIN, 1, [Define on FreeBSD to
4536 work around an issue when reading from a PTY.])
4542 dnl FIXME Can't we test if this exists (eg /proc/$$)?
4543 AC_DEFINE(HAVE_PROCFS, 1, [Define if you have the /proc filesystem.])
4548 darwin | dragonfly | freebsd | netbsd | openbsd )
4549 AC_DEFINE(DONT_REOPEN_PTY, 1, [Define if process.c does not need to
4550 close a pty to make it a controlling terminal (it is already a
4551 controlling terminal of the subprocess, because we did ioctl TIOCSCTTY).])
4555 dnl FIXME Surely we can test for this rather than hard-code it.
4557 netbsd | openbsd) sound_device="/dev/audio" ;;
4558 *) sound_device="/dev/dsp" ;;
4562 AC_DEFINE_UNQUOTED(DEFAULT_SOUND_DEVICE, "$sound_device",
4563 [Name of the default sound device.])
4566 dnl Emacs can read input using SIGIO and buffering characters itself,
4567 dnl or using CBREAK mode and making C-g cause SIGINT.
4568 dnl The choice is controlled by the variable interrupt_input.
4570 dnl Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
4572 dnl Emacs uses the presence of the USABLE_SIGIO macro
4573 dnl to indicate whether or not signal-driven I/O is possible. It uses
4574 dnl INTERRUPT_INPUT to decide whether to use it by default.
4576 dnl SIGIO can be used only on systems that implement it (4.2 and 4.3).
4577 dnl CBREAK mode has two disadvantages
4578 dnl 1) At least in 4.2, it is impossible to handle the Meta key properly.
4579 dnl I hear that in system V this problem does not exist.
4580 dnl 2) Control-G causes output to be discarded.
4581 dnl I do not know whether this can be fixed in system V.
4583 dnl Another method of doing input is planned but not implemented.
4584 dnl It would have Emacs fork off a separate process
4585 dnl to read the input and send it to the true Emacs process
4588 darwin | gnu-linux | gnu-kfreebsd )
4589 AC_DEFINE(INTERRUPT_INPUT, 1, [Define to read input using SIGIO.])
4594 dnl If the system's imake configuration file defines 'NeedWidePrototypes'
4595 dnl as 'NO', we must define NARROWPROTO manually. Such a define is
4596 dnl generated in the Makefile generated by 'xmkmf'. If we don't define
4597 dnl NARROWPROTO, we will see the wrong function prototypes for X functions
4598 dnl taking float or double parameters.
4600 cygwin|gnu|gnu-linux|gnu-kfreebsd|freebsd|netbsd|openbsd)
4601 AC_DEFINE(NARROWPROTO, 1, [Define if system's imake configuration
4602 file defines 'NeedWidePrototypes' as 'NO'.])
4607 dnl Used in process.c, this must be a loop, even if it only runs once.
4608 AH_TEMPLATE(PTY_ITERATION, [How to iterate over PTYs.])
4609 dnl Only used if !PTY_ITERATION. Iterate from FIRST_PTY_LETTER to z,
4610 dnl trying suffixes 0-16.
4611 AH_TEMPLATE(FIRST_PTY_LETTER, [Letter to use in finding device name of
4612 first PTY, if PTYs are supported.])
4613 AH_TEMPLATE(PTY_OPEN, [How to open a PTY, if non-standard.])
4614 AH_TEMPLATE(PTY_NAME_SPRINTF, [How to get the device name of the control
4615 end of a PTY, if non-standard.])
4616 AH_TEMPLATE(PTY_TTY_NAME_SPRINTF, [How to get device name of the tty
4617 end of a PTY, if non-standard.])
4621 AC_DEFINE(PTY_ITERATION, [int c; for (c = 0; !c ; c++)])
4622 dnl You allocate a pty by opening /dev/ptc to get the master side.
4623 dnl To get the name of the slave side, you just ttyname() the master side.
4624 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptc");])
4625 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [strcpy (pty_name, ttyname (fd));])
4629 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4630 dnl multi-line AC_DEFINEs are hard. :(
4631 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)])
4632 AC_DEFINE(PTY_NAME_SPRINTF, [])
4633 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
4636 gnu | openbsd | qnxnto )
4637 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4640 gnu-linux | gnu-kfreebsd | dragonfly | freebsd | netbsd | darwin | nacl )
4642 if test "x$ac_cv_func_grantpt" = xyes; then
4643 AC_DEFINE(UNIX98_PTYS, 1, [Define if the system has Unix98 PTYs.])
4644 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4645 dnl Note that grantpt and unlockpt may fork. We must block SIGCHLD
4646 dnl to prevent sigchld_handler from intercepting the child's death.
4647 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); }])
4648 dnl if HAVE_POSIX_OPENPT
4649 if test "x$ac_cv_func_posix_openpt" = xyes; then
4650 AC_DEFINE(PTY_OPEN, [do { fd = posix_openpt (O_RDWR | O_CLOEXEC | O_NOCTTY); if (fd < 0 && errno == EINVAL) fd = posix_openpt (O_RDWR | O_NOCTTY); } while (false)])
4651 AC_DEFINE(PTY_NAME_SPRINTF, [])
4653 elif test "x$ac_cv_func_getpt" = xyes; then
4654 AC_DEFINE(PTY_OPEN, [fd = getpt ()])
4655 AC_DEFINE(PTY_NAME_SPRINTF, [])
4657 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4660 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4665 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4666 AC_DEFINE(PTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/ptym/pty%c%x", c, i);])
4667 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/pty/tty%c%x", c, i);])
4671 dnl On SysVr4, grantpt(3) forks a subprocess, so do not use
4672 dnl O_CLOEXEC when opening the pty, and keep the SIGCHLD handler
4673 dnl from intercepting that death. If any child but grantpt's should die
4674 dnl within, it should be caught after sigrelse(2).
4675 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4676 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); }])
4680 dnl Comments are as per sol2*.
4681 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4682 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); }])
4689 dnl This change means that we don't loop through allocate_pty too
4690 dnl many times in the (rare) event of a failure.
4691 AC_DEFINE(FIRST_PTY_LETTER, ['z'])
4692 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4693 dnl Push various streams modules onto a PTY channel. Used in process.c.
4694 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.])
4699 AH_TEMPLATE(SIGNALS_VIA_CHARACTERS, [Make process_send_signal work by
4700 "typing" a signal character on the pty.])
4703 dnl Perry Smith <pedz@ddivt1.austin.ibm.com> says this is correct for AIX.
4704 aix4-2 | cygwin | gnu | dragonfly | freebsd | netbsd | openbsd | darwin )
4705 AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4708 dnl 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works.
4709 dnl FIXME Does gnu-kfreebsd have linux/version.h? It seems unlikely...
4710 gnu-linux | gnu-kfreebsd )
4712 AC_CACHE_CHECK([for signals via characters], [emacs_cv_signals_via_chars],
4713 [AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4714 #include <linux/version.h>
4715 #if LINUX_VERSION_CODE < 0x20400
4716 # error "Linux version too old"
4718 ]], [[]])], emacs_cv_signals_via_chars=yes, emacs_cv_signals_via_chars=no)])
4720 test "$emacs_cv_signals_via_chars" = yes && AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4725 AH_TEMPLATE(TAB3, [Undocumented.])
4728 darwin) AC_DEFINE(TAB3, OXTABS) ;;
4730 gnu | dragonfly | freebsd | netbsd | openbsd )
4731 AC_DEFINE(TABDLY, OXTABS, [Undocumented.])
4732 AC_DEFINE(TAB3, OXTABS)
4735 gnu-linux | gnu-kfreebsd )
4736 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4740 ]], [[]])], AC_DEFINE(GC_MARK_SECONDARY_STACK(),
4741 [do { extern void *__libc_ia64_register_backing_store_base; __builtin_ia64_flushrs (); mark_memory (__libc_ia64_register_backing_store_base, __builtin_ia64_bsp ());} while (false)],
4742 [Mark a secondary stack, like the register stack on the ia64.]), [])
4746 AC_DEFINE(RUN_TIME_REMAP, 1, [Define if emacs.c needs to call
4747 run_time_remap; for HPUX.])
4752 dnl This won't be used automatically yet. We also need to know, at least,
4753 dnl that the stack is continuous.
4754 AH_TEMPLATE(GC_SETJMP_WORKS, [Define if setjmp is known to save all
4755 registers relevant for conservative garbage collection in the jmp_buf.])
4759 dnl Not all the architectures are tested, but there are Debian packages
4760 dnl for SCM and/or Guile on them, so the technique must work. See also
4761 dnl comments in alloc.c concerning setjmp and gcc.
4762 dnl Fixme: it's probably safe to just use the GCC conditional below.
4763 gnu-linux | gnu-kfreebsd )
4764 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4765 #if defined __i386__ || defined __sparc__ || defined __mc68000__ \
4766 || defined __alpha__ || defined __mips__ || defined __s390__ \
4767 || defined __arm__ || defined __powerpc__ || defined __amd64__ \
4768 || defined __ia64__ || defined __sh__
4771 # error "setjmp not known to work on this arch"
4773 ]], [[]])], AC_DEFINE(GC_SETJMP_WORKS, 1))
4778 if test x$GCC = xyes; then
4779 dnl GC_SETJMP_WORKS is nearly always appropriate for GCC.
4780 AC_DEFINE(GC_SETJMP_WORKS, 1)
4783 aix* | dragonfly | freebsd | netbsd | openbsd | sol2* )
4784 AC_DEFINE(GC_SETJMP_WORKS, 1)
4789 dnl In a weird quirk, MS runtime uses _setjmp and longjmp.
4790 AC_CACHE_CHECK([for _setjmp], [emacs_cv_func__setjmp],
4793 [[#include <setjmp.h>
4795 # define _longjmp longjmp
4800 _longjmp (j, 1);]])],
4801 [emacs_cv_func__setjmp=yes],
4802 [emacs_cv_func__setjmp=no])])
4803 if test $emacs_cv_func__setjmp = yes; then
4804 AC_DEFINE([HAVE__SETJMP], 1, [Define to 1 if _setjmp and _longjmp work.])
4807 # We need to preserve signal mask to handle C stack overflows.
4808 AC_CACHE_CHECK([for sigsetjmp], [emacs_cv_func_sigsetjmp],
4811 [[#include <setjmp.h>
4814 if (! sigsetjmp (j, 1))
4815 siglongjmp (j, 1);]])],
4816 [emacs_cv_func_sigsetjmp=yes],
4817 [emacs_cv_func_sigsetjmp=no])])
4818 if test $emacs_cv_func_sigsetjmp = yes; then
4819 AC_DEFINE([HAVE_SIGSETJMP], 1,
4820 [Define to 1 if sigsetjmp and siglongjmp work.])
4823 case $emacs_cv_func_sigsetjmp,$emacs_cv_alternate_stack,$opsys in
4824 yes,yes,* | *,*,mingw32)
4825 AC_DEFINE([HAVE_STACK_OVERFLOW_HANDLING], 1,
4826 [Define to 1 if C stack overflow can be handled in some cases.]);;
4831 dnl TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
4832 dnl subprocesses the usual way. But TIOCSIGNAL does work for PTYs,
4833 dnl and this is all we need.
4834 AC_DEFINE(TIOCSIGSEND, TIOCSIGNAL, [Some platforms redefine this.])
4841 dnl Used in xfaces.c.
4842 AC_DEFINE(XOS_NEEDS_TIME_H, 1, [Compensate for a bug in Xos.h on
4843 some systems, where it requires time.h.])
4848 dnl Define symbols to identify the version of Unix this is.
4849 dnl Define all the symbols that apply correctly.
4850 AH_TEMPLATE(DOS_NT, [Define if the system is MS DOS or MS Windows.])
4851 AH_TEMPLATE(MSDOS, [Define if the system is MS DOS.])
4852 AH_TEMPLATE(USG, [Define if the system is compatible with System III.])
4853 AH_TEMPLATE(USG5_4, [Define if the system is compatible with System V Release 4.])
4858 dnl This symbol should be defined on AIX Version 3 ???????
4859 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4861 # error "_AIX not defined"
4863 ]], [[]])], [], AC_DEFINE(_AIX, [], [Define if the system is AIX.]))
4867 AC_DEFINE(CYGWIN, 1, [Define if the system is Cygwin.])
4871 dnl Not __APPLE__, as this may not be defined on non-macOS Darwin.
4872 dnl Not DARWIN, because Panther and lower CoreFoundation.h use DARWIN to
4873 dnl distinguish macOS from pure Darwin.
4874 AC_DEFINE(DARWIN_OS, [], [Define if the system is Darwin.])
4877 gnu-linux | gnu-kfreebsd )
4879 AC_DEFINE(GNU_LINUX, [], [Define if ths system is compatible with GNU/Linux.])
4884 AC_DEFINE(HPUX, [], [Define if the system is HPUX.])
4888 AC_DEFINE(DOS_NT, [])
4889 AC_DEFINE(WINDOWSNT, 1, [Define if compiling for native MS Windows.])
4890 if test "x$ac_enable_checking" != "x" ; then
4891 AC_DEFINE(EMACSDEBUG, 1, [Define to 1 to enable w32 debug facilities.])
4897 AC_DEFINE(USG5_4, [])
4898 AC_DEFINE(SOLARIS2, [], [Define if the system is Solaris.])
4903 AC_DEFINE(USG5_4, [])
4907 AC_CACHE_CHECK([for usable FIONREAD], [emacs_cv_usable_FIONREAD],
4910 dnl BUILD 9008 - FIONREAD problem still exists in X-Windows.
4911 emacs_cv_usable_FIONREAD=no
4915 emacs_cv_usable_FIONREAD=yes
4920 [AC_LANG_PROGRAM([[#include <sys/types.h>
4921 #include <sys/ioctl.h>
4923 # include <sys/filio.h>
4926 [[int foo = ioctl (0, FIONREAD, &foo);]])],
4927 [emacs_cv_usable_FIONREAD=yes],
4928 [emacs_cv_usable_FIONREAD=no])
4931 if test $emacs_cv_usable_FIONREAD = yes; then
4932 AC_DEFINE([USABLE_FIONREAD], [1], [Define to 1 if FIONREAD is usable.])
4934 if test $emacs_broken_SIGIO = no; then
4935 AC_CACHE_CHECK([for usable SIGIO], [emacs_cv_usable_SIGIO],
4937 [AC_LANG_PROGRAM([[#include <fcntl.h>
4940 [[int foo = SIGIO | F_SETFL | FASYNC;]])],
4941 [emacs_cv_usable_SIGIO=yes],
4942 [emacs_cv_usable_SIGIO=no])],
4943 [emacs_cv_usable_SIGIO=yes],
4944 [emacs_cv_usable_SIGIO=no])
4945 if test $emacs_cv_usable_SIGIO = yes; then
4946 AC_DEFINE([USABLE_SIGIO], [1], [Define to 1 if SIGIO is usable.])
4953 dnl It works to open the pty's tty in the parent (Emacs), then
4954 dnl close and reopen it in the child.
4955 AC_DEFINE(USG_SUBTTY_WORKS, 1, [Define for USG systems where it
4956 works to open a pty's tty in the parent process, then close and
4957 reopen it in the child.])
4961 AC_DEFINE(_STRUCTURED_PROC, 1, [Needed for system_process_attributes
4966 # Set up the CFLAGS for real compilation, so we can substitute it.
4967 CFLAGS="$REAL_CFLAGS"
4968 CPPFLAGS="$REAL_CPPFLAGS"
4971 ## Hack to detect a buggy GCC version.
4972 if test "$GCC" = yes && \
4973 $CC --version 2> /dev/null | grep 'gcc.* 4.5.0' >/dev/null; then
4975 *-fno-optimize-sibling-calls*) ;;
4977 AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS.]);;
4981 version=$PACKAGE_VERSION
4983 copyright="Copyright (C) 2017 Free Software Foundation, Inc."
4984 AC_DEFINE_UNQUOTED(COPYRIGHT, ["$copyright"],
4985 [Short copyright string for this version of Emacs.])
4988 ### Specify what sort of things we'll be editing into Makefile and config.h.
4989 ### Use configuration here uncanonicalized to avoid exceeding size limits.
4991 AC_SUBST(configuration)
4996 AC_SUBST(exec_prefix)
4999 AC_SUBST(sharedstatedir)
5000 AC_SUBST(libexecdir)
5004 AC_SUBST(standardlisppath)
5005 AC_SUBST(locallisppath)
5007 AC_SUBST(x_default_search_path)
5009 AC_SUBST(archlibdir)
5015 ## FIXME? Nothing uses @LD_SWITCH_X_SITE@.
5016 ## src/Makefile.in did add LD_SWITCH_X_SITE (as a cpp define) to the
5017 ## end of LIBX_BASE, but nothing ever set it.
5018 AC_SUBST(LD_SWITCH_X_SITE)
5019 AC_SUBST(C_SWITCH_X_SITE)
5020 AC_SUBST(GNUSTEP_CFLAGS)
5022 ## Used in lwlib/Makefile.in.
5023 AC_SUBST(X_TOOLKIT_TYPE)
5025 AC_SUBST(ns_appbindir)
5026 AC_SUBST(ns_appresdir)
5028 AC_SUBST(GNU_OBJC_CFLAGS)
5029 AC_SUBST(OTHER_FILES)
5031 if test -n "${term_header}"; then
5032 AC_DEFINE_UNQUOTED(TERM_HEADER, "${term_header}",
5033 [Define to the header for the built-in window system.])
5036 AC_DEFINE_UNQUOTED(EMACS_CONFIGURATION, "${canonical}",
5037 [Define to the canonical Emacs configuration name.])
5038 AC_DEFINE_UNQUOTED(EMACS_CONFIG_OPTIONS, "${emacs_config_options}",
5039 [Define to the options passed to configure.])
5044 if test "${HAVE_X_WINDOWS}" = "yes" ; then
5045 AC_DEFINE(HAVE_X_WINDOWS, 1,
5046 [Define to 1 if you want to use the X window system.])
5048 XOBJ="xterm.o xfns.o xselect.o xrdb.o xsmfns.o xsettings.o"
5050 if test "$HAVE_CAIRO" = "yes"; then
5051 FONT_OBJ="ftfont.o ftcrfont.o"
5052 elif test "$HAVE_XFT" = "yes"; then
5053 FONT_OBJ="$FONT_OBJ ftfont.o xftfont.o ftxfont.o"
5054 elif test "$HAVE_FREETYPE" = "yes"; then
5055 FONT_OBJ="$FONT_OBJ ftfont.o ftxfont.o"
5065 if test "${USE_X_TOOLKIT}" != "none" ; then
5067 AC_DEFINE(USE_X_TOOLKIT, 1, [Define to 1 if using an X toolkit.])
5068 if test "${USE_X_TOOLKIT}" = "LUCID"; then
5069 AC_DEFINE(USE_LUCID, 1, [Define to 1 if using the Lucid X toolkit.])
5070 elif test "${USE_X_TOOLKIT}" = "MOTIF"; then
5071 AC_DEFINE(USE_MOTIF, 1, [Define to 1 if using the Motif X toolkit.])
5075 ## Paul Abrahams <abrahams at equinox.shaysnet.com> says this is needed.
5076 MOTIF_LIBW="$MOTIF_LIBW -lXpm"
5080 ## Richard Anthony Ryan <ryanr at ellingtn.ftc.nrcs.usda.gov>
5081 ## says -lXimp is needed in UNIX_SV ... 4.2 1.1.2.
5082 MOTIF_LIBW="MOTIF_LIBW -lXimp"
5086 ## olson@mcs.anl.gov says -li18n is needed by -lXm.
5087 MOTIF_LIBW="$MOTIF_LIBW -li18n"
5090 MOTIF_LIBW="$MOTIF_LIBW $LIBXP"
5093 AC_SUBST(WIDGET_OBJ)
5096 case "$USE_X_TOOLKIT" in
5097 MOTIF) TOOLKIT_LIBW="$MOTIF_LIBW" ;;
5098 LUCID) TOOLKIT_LIBW="$LUCID_LIBW" ;;
5099 none) test "x$HAVE_GTK" = "xyes" && TOOLKIT_LIBW="$GTK_LIBS" ;;
5101 if test "$HAVE_XWIDGETS" = "yes"; then
5102 TOOLKIT_LIBW="$TOOLKIT_LIBW -lXcomposite"
5104 AC_SUBST(TOOLKIT_LIBW)
5106 if test "${opsys}" != "mingw32"; then
5107 if test "$USE_X_TOOLKIT" = "none"; then
5108 LIBXT_OTHER="\$(LIBXSM)"
5110 LIBXT_OTHER="\$(LIBXMU) -lXt \$(LIBXTR6) -lXext"
5113 AC_SUBST(LIBXT_OTHER)
5115 if test "${HAVE_X11}" = "yes" ; then
5116 AC_DEFINE(HAVE_X11, 1,
5117 [Define to 1 if you want to use version 11 of X windows.])
5118 LIBX_OTHER="\$(LIBXT) \$(LIBX_EXTRA)"
5122 AC_SUBST(LIBX_OTHER)
5125 if test "$HAVE_GTK" = yes || test "$HAVE_X11" != yes; then
5127 elif test "$USE_X_TOOLKIT" = none; then
5129 LIBXMENU='$(oldXMenudir)/libXMenu11.a'
5130 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS oldXMenu"
5132 LIBXMENU='$(lwlibdir)/liblw.a'
5133 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS lwlib"
5137 if test "${GNU_MALLOC}" = "yes" ; then
5138 AC_DEFINE(GNU_MALLOC, 1,
5139 [Define to 1 if you want to use the GNU memory allocator.])
5143 if test "${REL_ALLOC}" = "yes" ; then
5144 AC_DEFINE(REL_ALLOC, 1,
5145 [Define REL_ALLOC if you want to use the relocating allocator for
5148 test "$system_malloc" != "yes" && RALLOC_OBJ=ralloc.o
5150 AC_SUBST(RALLOC_OBJ)
5152 if test "$opsys" = "cygwin"; then
5153 CYGWIN_OBJ="cygw32.o"
5154 ## Cygwin differs because of its unexec().
5156 POST_ALLOC_OBJ=lastfile.o
5157 elif test "$opsys" = "mingw32"; then
5160 POST_ALLOC_OBJ=lastfile.o
5163 PRE_ALLOC_OBJ=lastfile.o
5166 AC_SUBST(CYGWIN_OBJ)
5167 AC_SUBST(PRE_ALLOC_OBJ)
5168 AC_SUBST(POST_ALLOC_OBJ)
5170 dnl Call this 'FORTIFY_SOUR' so that it sorts before the 'FORTIFY_SOURCE'
5171 dnl verbatim defined above. The tricky name is apropos, as this hack
5172 dnl makes Fortify go sour!
5173 AH_VERBATIM([FORTIFY_SOUR],
5174 [/* Without the following workaround, Emacs runs slowly on OS X 10.8.
5175 The workaround disables some useful run-time checking, so it
5176 should be conditional to the platforms with the performance bug.
5177 Perhaps Apple will fix this some day; also see m4/extern-inline.m4. */
5178 #if defined __APPLE__ && defined __GNUC__
5179 # ifndef _DONT_USE_CTYPE_INLINE_
5180 # define _DONT_USE_CTYPE_INLINE_
5182 # ifndef _FORTIFY_SOURCE
5183 # define _FORTIFY_SOURCE 0
5188 # If user asks to omit features, disable optional features that gnulib
5189 # might otherwise enable.
5190 if test "$with_features" = no && test "$enable_acl" != yes; then
5194 # Configure gnulib. Although this does not affect CFLAGS or LIBS permanently.
5195 # it temporarily reverts them to their pre-pkg-config values,
5196 # because gnulib needs to work with both src (which uses the
5197 # pkg-config stuff) and lib-src (which does not). For example, gnulib
5198 # may need to determine whether LIB_CLOCK_GETTIME should contain -lrt,
5199 # and it therefore needs to run in an environment where LIBS does not
5200 # already contain -lrt merely because 'pkg-config --libs' printed '-lrt'
5201 # for some package unrelated to lib-src.
5204 CFLAGS=$pre_PKG_CONFIG_CFLAGS
5205 LIBS="$LIB_PTHREAD $pre_PKG_CONFIG_LIBS"
5206 gl_ASSERT_NO_GNULIB_POSIXCHECK
5207 gl_ASSERT_NO_GNULIB_TESTS
5212 if test "${opsys}" = "mingw32"; then
5213 CPPFLAGS="$CPPFLAGS -DUSE_CRT_DLL=1 -I \${abs_top_srcdir}/nt/inc"
5214 # Remove unneeded switches from the value of CC that goes to Makefiles
5215 CC=`AS_ECHO(["$CC"]) | sed -e "s,$GCC_TEST_OPTIONS,,"`
5219 aix4-2) LD_SWITCH_SYSTEM_TEMACS="-Wl,-bnodelcsect" ;;
5221 cygwin) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000" ;;
5224 ## The -headerpad option tells ld (see man page) to leave room at the
5225 ## end of the header for adding load commands. Needed for dumping.
5226 ## 0x1000 is enough for roughly 52 load commands on the x86_64
5227 ## architecture (where they are 78 bytes each). The actual number of
5228 ## load commands added is not consistent but normally ranges from
5229 ## about 14 to about 34. Setting it high gets us plenty of slop and
5230 ## only costs about 1.5K of wasted binary space.
5231 headerpad_extra=1000
5232 if test "$HAVE_NS" = "yes"; then
5233 libs_nsgui="-framework AppKit"
5234 if test "$NS_IMPL_COCOA" = "yes"; then
5235 libs_nsgui="$libs_nsgui -framework IOKit"
5240 LD_SWITCH_SYSTEM_TEMACS="-fno-pie -prebind $libs_nsgui -Xlinker -headerpad -Xlinker $headerpad_extra"
5242 ## This is here because src/Makefile.in did some extra fiddling around
5243 ## with LD_SWITCH_SYSTEM. It seems cleaner to put this in
5244 ## LD_SWITCH_SYSTEM_TEMACS instead,
5245 test "x$LD_SWITCH_SYSTEM" = "x" && test "x$GCC" != "xyes" && \
5246 LD_SWITCH_SYSTEM_TEMACS="-X $LD_SWITCH_SYSTEM_TEMACS"
5249 ## LD_SWITCH_X_SITE_RPATH is a -rpath option saying where to
5250 ## find X at run-time.
5251 ## When handled by cpp, this was in LD_SWITCH_SYSTEM. However, at the
5252 ## point where configure sourced the s/*.h file, LD_SWITCH_X_SITE_RPATH
5253 ## had not yet been defined and was expanded to null. Hence LD_SWITCH_SYSTEM
5254 ## had different values in configure (in ac_link) and src/Makefile.in.
5255 ## It seems clearer therefore to put this piece in LD_SWITCH_SYSTEM_TEMACS.
5256 gnu*) LD_SWITCH_SYSTEM_TEMACS="\$(LD_SWITCH_X_SITE_RPATH)" ;;
5259 ## Is it any better under MinGW64 to relocate emacs into higher addresses?
5260 case "$canonical" in
5261 x86_64-*-*) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x400000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5262 *) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x01000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5266 *) LD_SWITCH_SYSTEM_TEMACS= ;;
5269 # -no-pie or -nopie fixes a temacs segfault on Gentoo, OpenBSD,
5270 # Ubuntu, and other systems with "hardened" GCC configurations for
5271 # some reason (Bug#18784). We don't know why this works, but not
5272 # segfaulting is better than segfaulting. Use ac_c_werror_flag=yes
5273 # when trying the option, otherwise clang keeps warning that it does
5274 # not understand it, and pre-4.6 GCC has a similar problem
5275 # (Bug#20338). Prefer -no-pie to -nopie, as -no-pie is the
5276 # spelling used by GCC 6.1.0 and later (Bug#24682).
5278 [for $CC option to disable position independent executables],
5279 [emacs_cv_prog_cc_no_pie],
5280 [emacs_save_c_werror_flag=$ac_c_werror_flag
5281 emacs_save_LDFLAGS=$LDFLAGS
5282 ac_c_werror_flag=yes
5283 for emacs_cv_prog_cc_no_pie in -no-pie -nopie no; do
5284 test $emacs_cv_prog_cc_no_pie = no && break
5285 LDFLAGS="$emacs_save_LDFLAGS $emacs_cv_prog_cc_no_pie"
5286 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [break])
5288 ac_c_werror_flag=$emacs_save_c_werror_flag
5289 LDFLAGS=$emacs_save_LDFLAGS])
5290 if test "$emacs_cv_prog_cc_no_pie" != no; then
5291 LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS $emacs_cv_prog_cc_no_pie"
5294 if test x$ac_enable_profiling != x ; then
5296 *freebsd | gnu-linux) ;;
5297 *) LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -pg" ;;
5301 LD_SWITCH_SYSTEM_TEMACS="$LDFLAGS_NOCOMBRELOC $LD_SWITCH_SYSTEM_TEMACS"
5303 AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
5305 ## Common for all window systems
5306 if test "$window_system" != "none"; then
5307 AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])
5308 AC_DEFINE(POLL_FOR_INPUT, 1, [Define if you poll periodically to detect C-g.])
5309 WINDOW_SYSTEM_OBJ="fontset.o fringe.o image.o"
5312 AC_SUBST(WINDOW_SYSTEM_OBJ)
5314 AH_TOP([/* GNU Emacs site configuration template file.
5316 Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2017
5317 Free Software Foundation, Inc.
5319 This file is part of GNU Emacs.
5321 GNU Emacs is free software: you can redistribute it and/or modify
5322 it under the terms of the GNU General Public License as published by
5323 the Free Software Foundation, either version 3 of the License, or (at
5324 your option) any later version.
5326 GNU Emacs is distributed in the hope that it will be useful,
5327 but WITHOUT ANY WARRANTY; without even the implied warranty of
5328 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5329 GNU General Public License for more details.
5331 You should have received a copy of the GNU General Public License
5332 along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
5335 /* No code in Emacs #includes config.h twice, but some bits of code
5336 intended to work with other packages as well (like gmalloc.c)
5337 think they can include it as many times as they like. */
5338 #ifndef EMACS_CONFIG_H
5339 #define EMACS_CONFIG_H
5342 AH_BOTTOM([#include <conf_post.h>
5344 #endif /* EMACS_CONFIG_H */
5353 #### Report on what we decided to do.
5354 #### Report GTK as a toolkit, even if it doesn't use Xt.
5355 #### It makes printing result more understandable as using GTK sets
5356 #### toolkit_scroll_bars to yes by default.
5357 if test "${HAVE_GTK}" = "yes"; then
5358 USE_X_TOOLKIT="$USE_GTK_TOOLKIT"
5361 if test $USE_ACL -ne 0; then
5362 ACL_SUMMARY="yes $LIB_ACL"
5367 emacs_standard_dirs='Standard dirs'
5369 Configured for '${canonical}'.
5371 Where should the build process find the source code? ${srcdir}
5372 What compiler should emacs be built with? ${CC} ${CFLAGS}
5373 Should Emacs use the GNU version of malloc? ${GNU_MALLOC}${GNU_MALLOC_reason}
5374 Should Emacs use a relocating allocator for buffers? ${REL_ALLOC}
5375 Should Emacs use mmap(2) for buffer allocation? $use_mmap_for_buffers
5376 What window system should Emacs use? ${window_system}
5377 What toolkit should Emacs use? ${USE_X_TOOLKIT}
5378 Where do we find X Windows header files? ${x_includes:-$emacs_standard_dirs}
5379 Where do we find X Windows libraries? ${x_libraries:-$emacs_standard_dirs}"])
5382 emacs_config_features=
5383 for opt in XAW3D XPM JPEG TIFF GIF PNG RSVG CAIRO IMAGEMAGICK SOUND GPM DBUS \
5384 GCONF GSETTINGS NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT \
5385 LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS X_TOOLKIT OLDXMENU X11 NS MODULES \
5386 XWIDGETS LIBSYSTEMD JSON CANNOT_DUMP LCMS2; do
5389 CANNOT_DUMP) eval val=\${$opt} ;;
5390 NOTIFY|ACL) eval val=\${${opt}_SUMMARY} ;;
5391 TOOLKIT_SCROLL_BARS|X_TOOLKIT) eval val=\${USE_$opt} ;;
5392 *) eval val=\${HAVE_$opt} ;;
5395 xno|xnone|x) continue ;;
5400 GTK*|LUCID|MOTIF) opt=$val ;;
5405 AS_VAR_APPEND([emacs_config_features], ["$optsep$opt"])
5408 AC_DEFINE_UNQUOTED(EMACS_CONFIG_FEATURES, "${emacs_config_features}",
5409 [Summary of some of the main features enabled by configure.])
5411 AS_ECHO([" Does Emacs use -lXaw3d? ${HAVE_XAW3D}
5412 Does Emacs use -lXpm? ${HAVE_XPM}
5413 Does Emacs use -ljpeg? ${HAVE_JPEG}
5414 Does Emacs use -ltiff? ${HAVE_TIFF}
5415 Does Emacs use a gif library? ${HAVE_GIF} $LIBGIF
5416 Does Emacs use a png library? ${HAVE_PNG} $LIBPNG
5417 Does Emacs use -lrsvg-2? ${HAVE_RSVG}
5418 Does Emacs use cairo? ${HAVE_CAIRO}
5419 Does Emacs use -llcms2? ${HAVE_LCMS2}
5420 Does Emacs use imagemagick (version 6)? ${HAVE_IMAGEMAGICK}
5421 Does Emacs support sound? ${HAVE_SOUND}
5422 Does Emacs use -lgpm? ${HAVE_GPM}
5423 Does Emacs use -ldbus? ${HAVE_DBUS}
5424 Does Emacs use -lgconf? ${HAVE_GCONF}
5425 Does Emacs use GSettings? ${HAVE_GSETTINGS}
5426 Does Emacs use a file notification library? ${NOTIFY_SUMMARY}
5427 Does Emacs use access control lists? ${ACL_SUMMARY}
5428 Does Emacs use -lselinux? ${HAVE_LIBSELINUX}
5429 Does Emacs use -lgnutls? ${HAVE_GNUTLS}
5430 Does Emacs use -lxml2? ${HAVE_LIBXML2}
5431 Does Emacs use -lfreetype? ${HAVE_FREETYPE}
5432 Does Emacs use -lm17n-flt? ${HAVE_M17N_FLT}
5433 Does Emacs use -lotf? ${HAVE_LIBOTF}
5434 Does Emacs use -lxft? ${HAVE_XFT}
5435 Does Emacs use -lsystemd? ${HAVE_LIBSYSTEMD}
5436 Does Emacs use -ljansson? ${HAVE_JSON}
5437 Does Emacs directly use zlib? ${HAVE_ZLIB}
5438 Does Emacs have dynamic modules support? ${HAVE_MODULES}
5439 Does Emacs use toolkit scroll bars? ${USE_TOOLKIT_SCROLL_BARS}
5440 Does Emacs support Xwidgets (requires gtk3)? ${HAVE_XWIDGETS}
5441 Does Emacs have threading support in lisp? ${threads_enabled}
5444 if test -n "${EMACSDATA}"; then
5445 AS_ECHO([" Environment variable EMACSDATA set to: $EMACSDATA"])
5447 if test -n "${EMACSDOC}"; then
5448 AS_ECHO([" Environment variable EMACSDOC set to: $EMACSDOC"])
5453 if test "$HAVE_NS" = "yes"; then
5455 AS_ECHO(["You must run \"${MAKE-make} install\" in order to test the built application.
5456 The installed application will go to nextstep/Emacs.app and can be
5457 run or moved from there."])
5458 if test "$EN_NS_SELF_CONTAINED" = "yes"; then
5459 echo "The application will be fully self-contained."
5461 AS_ECHO(["The lisp resources for the application will be installed under ${prefix}.
5462 You may need to run \"${MAKE-make} install\" with sudo. The application will fail
5463 to run if these resources are not installed."])
5468 case $opsys,$emacs_uname_r in
5470 AC_MSG_WARN([[building Emacs on Cygwin 1.5 is not supported.]])
5475 # Remove any trailing slashes in these variables.
5477 */) prefix=`AS_DIRNAME(["$prefix."])`;;
5479 case $exec_prefix in
5480 */) exec_prefix=`AS_DIRNAME(["$exec_prefix."])`;;
5483 if test "$HAVE_NS" = "yes"; then
5484 if test "$NS_IMPL_GNUSTEP" = yes; then
5485 AC_CONFIG_FILES([nextstep/GNUstep/Emacs.base/Resources/Info-gnustep.plist:nextstep/templates/Info-gnustep.plist.in \
5486 nextstep/GNUstep/Emacs.base/Resources/Emacs.desktop:nextstep/templates/Emacs.desktop.in])
5487 ns_check_file=Resources/Info-gnustep.plist
5489 AC_CONFIG_FILES([nextstep/Cocoa/Emacs.base/Contents/Info.plist:nextstep/templates/Info.plist.in \
5490 nextstep/Cocoa/Emacs.base/Contents/Resources/English.lproj/InfoPlist.strings:nextstep/templates/InfoPlist.strings.in])
5491 ns_check_file=Contents/Info.plist
5493 AC_SUBST(ns_check_file)
5496 AC_CONFIG_FILES([Makefile lib/gnulib.mk])
5498 dnl config.status treats $srcdir specially, so I think this is ok...
5499 AC_CONFIG_FILES([$srcdir/doc/man/emacs.1])
5501 m4_define([subdir_makefiles],
5502 [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])
5503 SUBDIR_MAKEFILES="subdir_makefiles"
5504 AC_CONFIG_FILES(subdir_makefiles)
5506 dnl test/ is not present in release tarfiles.
5507 opt_makefile=test/Makefile
5509 if test -f "$srcdir/$opt_makefile.in"; then
5510 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
5511 dnl Again, it's best not to use a variable. Though you can add
5512 dnl ", [], [opt_makefile='$opt_makefile']" and it should work.
5513 AC_CONFIG_FILES([test/Makefile])
5517 dnl The admin/ directory used to be excluded from tarfiles.
5518 if test -d $srcdir/admin; then
5519 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES admin/charsets/Makefile admin/unidata/Makefile admin/grammars/Makefile"
5520 AC_CONFIG_FILES([admin/charsets/Makefile])
5521 AC_CONFIG_FILES([admin/unidata/Makefile])
5522 AC_CONFIG_FILES([admin/grammars/Makefile])
5526 SUBDIR_MAKEFILES_IN=`echo " ${SUBDIR_MAKEFILES}" | sed -e 's| | $(srcdir)/|g' -e 's|Makefile|Makefile.in|g'`
5528 AC_SUBST(SUBDIR_MAKEFILES_IN)
5530 dnl You might wonder (I did) why epaths.h is generated by running make,
5531 dnl rather than just letting configure generate it from epaths.in.
5532 dnl One reason is that the various paths are not fully expanded (see above);
5533 dnl e.g., gamedir='${localstatedir}/games/emacs'.
5534 dnl Secondly, the GNU Coding standards require that one should be able
5535 dnl to run 'make prefix=/some/where/else' and override the values set
5536 dnl by configure. This also explains the 'move-if-change' test and
5537 dnl the use of force in the 'epaths-force' rule in Makefile.in.
5538 AC_CONFIG_COMMANDS([src/epaths.h], [
5539 if test "${opsys}" = "mingw32"; then
5540 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force-w32
5542 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force
5543 fi || AC_MSG_ERROR(['src/epaths.h' could not be made.])
5544 ], [GCC="$GCC" CPPFLAGS="$CPPFLAGS" opsys="$opsys"])
5546 dnl NB we have to cheat and use the ac_... version because abs_top_srcdir
5547 dnl is not yet set, sigh. Or we could use ../$srcdir/src/.gdbinit,
5549 AC_CONFIG_COMMANDS([src/.gdbinit], [
5550 if test ! -f src/.gdbinit && test -f "$srcdir/src/.gdbinit"; then
5551 AS_ECHO(["source $ac_abs_top_srcdir/src/.gdbinit"]) > src/.gdbinit
5555 dnl Perhaps this would be better named doc-emacs-emacsver.texi?
5556 dnl See comments for etc-refcards-emacsver.tex.
5557 dnl Since we get a doc/emacs directory generated anyway, for the Makefile,
5558 dnl it is not quite the same. But we are generating in $srcdir.
5559 AC_CONFIG_COMMANDS([doc/emacs/emacsver.texi], [
5560 ${MAKE-make} -s --no-print-directory -C doc/emacs doc-emacsver || \
5561 AC_MSG_ERROR(['doc/emacs/emacsver.texi' could not be made.])
5564 dnl If we give this the more natural name, etc/refcards/emacsver.texi,
5565 dnl then a directory etc/refcards is created in the build directory,
5566 dnl which is probably harmless, but confusing (in out-of-tree builds).
5567 dnl (If we were to generate etc/refcards/Makefile, this might change.)
5568 dnl It is really $srcdir/etc/refcards/emacsver.tex that we generate.
5569 AC_CONFIG_COMMANDS([etc-refcards-emacsver.tex], [
5570 ${MAKE-make} -s MAKEFILE_NAME=do-not-make-Makefile etc-emacsver || \
5571 AC_MSG_ERROR(['etc/refcards/emacsver.tex' could not be made.])
5574 if test $AUTO_DEPEND = yes; then
5575 for dir in $AUTODEPEND_PARENTS; do
5576 AS_MKDIR_P([$dir/deps])
5582 if test ! "$with_mailutils"; then
5583 if test "$with_pop" = yes; then
5584 AC_MSG_WARN([This configuration installs a 'movemail' program
5585 that retrieves POP3 email via only insecure channels.
5586 To omit insecure POP3, you can use '$0 --without-pop'.])
5587 elif test "$with_pop" = no-by-default; then
5588 AC_MSG_WARN([This configuration installs a 'movemail' program
5589 that does not retrieve POP3 email. By default, Emacs 25 and earlier
5590 installed a 'movemail' program that retrieved POP3 email via only
5591 insecure channels, a practice that is no longer recommended but that
5592 you can continue to support by using '$0 --with-pop'.])
5597 # Don't suggest GNU Mailutils, as it hasn't been ported.
5600 emacs_fix_movemail="use '$0 --with-mailutils'"
5601 case `(movemail --version) 2>/dev/null` in
5603 *) emacs_fix_movemail="install GNU Mailutils
5604 <https://mailutils.org> and $emacs_fix_movemail";;
5606 AC_MSG_NOTICE([You might want to $emacs_fix_movemail.]);;
5610 test "$MAKE" = make || AC_MSG_NOTICE([Now you can run '$MAKE'.])