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, 26.0.60, bug-gnu-emacs@gnu.org)
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])
359 OPTION_DEFAULT_ON([xft],[don't use XFT for anti aliased fonts])
360 OPTION_DEFAULT_ON([libotf],[don't use libotf for OpenType font support])
361 OPTION_DEFAULT_ON([m17n-flt],[don't use m17n-flt for text shaping])
363 OPTION_DEFAULT_ON([toolkit-scroll-bars],[don't use Motif or Xaw3d scroll bars])
364 OPTION_DEFAULT_ON([xaw3d],[don't use Xaw3d])
365 OPTION_DEFAULT_ON([xim],[don't use X11 XIM])
366 AC_ARG_WITH([ns],[AS_HELP_STRING([--with-ns],
367 [use Nextstep (macOS Cocoa or GNUstep) windowing system.
368 On by default on macOS.])],[],[with_ns=maybe])
369 OPTION_DEFAULT_OFF([w32], [use native MS Windows GUI in a Cygwin build])
371 OPTION_DEFAULT_ON([gpm],[don't use -lgpm for mouse support on a GNU/Linux console])
372 OPTION_DEFAULT_ON([dbus],[don't compile with D-Bus support])
373 AC_ARG_WITH([gconf],[AS_HELP_STRING([--with-gconf],
374 [compile with Gconf support (Gsettings replaces this)])],[],[with_gconf=maybe])
375 OPTION_DEFAULT_ON([gsettings],[don't compile with GSettings support])
376 OPTION_DEFAULT_ON([selinux],[don't compile with SELinux support])
377 OPTION_DEFAULT_ON([gnutls],[don't use -lgnutls for SSL/TLS support])
378 OPTION_DEFAULT_ON([zlib],[don't compile with zlib decompression support])
379 OPTION_DEFAULT_OFF([modules],[compile with dynamic modules support])
380 OPTION_DEFAULT_ON([threads],[don't compile with elisp threading support])
382 AC_ARG_WITH([file-notification],[AS_HELP_STRING([--with-file-notification=LIB],
383 [use a file notification library (LIB one of: yes, inotify, kqueue, gfile, w32, no)])],
384 [ case "${withval}" in
385 y | ye | yes ) val=yes ;;
387 i | in | ino | inot | inoti | inotif | inotify ) val=inotify ;;
388 k | kq | kqu | kque | kqueu | kqueue ) val=kqueue ;;
389 g | gf | gfi | gfil | gfile ) val=gfile ;;
390 w | w3 | w32 ) val=w32 ;;
391 * ) AC_MSG_ERROR(['--with-file-notification=$withval' is invalid;
392 this option's value should be 'yes', 'no', 'inotify', 'kqueue', 'gfile' or 'w32'.
393 'yes' is a synonym for 'w32' on MS-Windows, for 'no' on Nextstep,
394 otherwise for the first of 'inotify', 'kqueue' or 'gfile' that is usable.])
397 with_file_notification=$val
399 [with_file_notification=$with_features])
401 OPTION_DEFAULT_OFF([xwidgets],
402 [enable use of some gtk widgets in Emacs buffers (requires gtk3)])
404 ## For the times when you want to build Emacs but don't have
405 ## a suitable makeinfo, and can live without the manuals.
406 dnl https://lists.gnu.org/archive/html/emacs-devel/2008-04/msg01844.html
407 OPTION_DEFAULT_ON([makeinfo],[don't require makeinfo for building manuals])
409 ## Makefile.in needs the cache file name.
412 ## This is an option because I do not know if all info/man support
413 ## compressed files, nor how to test if they do so.
414 OPTION_DEFAULT_ON([compress-install],
415 [don't compress some files (.el, .info, etc.) when installing. Equivalent to:
416 make GZIP_PROG= install])
418 AC_ARG_WITH(gameuser,dnl
419 [AS_HELP_STRING([--with-gameuser=USER_OR_GROUP],
420 [user for shared game score files.
421 An argument prefixed by ':' specifies a group instead.])])
424 case ${with_gameuser} in
426 yes) gamegroup=games ;;
427 :*) gamegroup=${with_gameuser#:} ;;
428 *) gameuser=${with_gameuser} ;;
431 AC_ARG_WITH([gnustep-conf],dnl
432 [AS_HELP_STRING([--with-gnustep-conf=FILENAME],
433 [name of GNUstep configuration file to use on systems where the command
434 'gnustep-config' does not work; default $GNUSTEP_CONFIG_FILE, or
435 /etc/GNUstep/GNUstep.conf])])
436 test "X${with_gnustep_conf}" != X && test "${with_gnustep_conf}" != yes && \
437 GNUSTEP_CONFIG_FILE="${with_gnustep_conf}"
438 test "X$GNUSTEP_CONFIG_FILE" = "X" && \
439 GNUSTEP_CONFIG_FILE=/etc/GNUstep/GNUstep.conf
441 AC_ARG_ENABLE(ns-self-contained,
442 [AS_HELP_STRING([--disable-ns-self-contained],
443 [disable self contained build under NeXTstep])],
444 EN_NS_SELF_CONTAINED=$enableval,
445 EN_NS_SELF_CONTAINED=yes)
448 AC_ARG_ENABLE(locallisppath,
449 [AS_HELP_STRING([--enable-locallisppath=PATH],
450 [directories Emacs should search for lisp files specific
452 if test "${enableval}" = "no"; then
454 elif test "${enableval}" != "yes"; then
455 locallisppath=${enableval} locallisppathset=yes
458 AC_ARG_ENABLE(checking,
459 [AS_HELP_STRING([--enable-checking@<:@=LIST@:>@],
460 [enable expensive run-time checks. With LIST,
461 enable only specific categories of checks.
462 Categories are: all,yes,no.
463 Flags are: stringbytes, stringoverrun, stringfreelist,
464 xmallocoverrun, conslist, glyphs])],
465 [ac_checking_flags="${enableval}"],[])
466 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
467 for check in $ac_checking_flags
470 # these set all the flags to specific states
471 yes) ac_enable_checking=1 ;;
472 no) ac_enable_checking= ;
473 ac_gc_check_stringbytes= ;
474 ac_gc_check_string_overrun= ;
475 ac_gc_check_string_free_list= ;
476 ac_xmalloc_overrun= ;
477 ac_gc_check_cons_list= ;
479 all) ac_enable_checking=1 ;
480 ac_gc_check_stringbytes=1 ;
481 ac_gc_check_string_overrun=1 ;
482 ac_gc_check_string_free_list=1 ;
483 ac_xmalloc_overrun=1 ;
484 ac_gc_check_cons_list=1 ;
486 # these enable particular checks
487 stringbytes) ac_gc_check_stringbytes=1 ;;
488 stringoverrun) ac_gc_check_string_overrun=1 ;;
489 stringfreelist) ac_gc_check_string_free_list=1 ;;
490 xmallocoverrun) ac_xmalloc_overrun=1 ;;
491 conslist) ac_gc_check_cons_list=1 ;;
492 glyphs) ac_glyphs_debug=1 ;;
493 *) AC_MSG_ERROR(unknown check category $check) ;;
498 if test x$ac_enable_checking != x ; then
499 AC_DEFINE(ENABLE_CHECKING, 1,
500 [Define to 1 if expensive run-time data type and consistency checks are enabled.])
502 if test x$ac_gc_check_stringbytes != x ; then
503 AC_DEFINE(GC_CHECK_STRING_BYTES, 1,
504 [Define this temporarily to hunt a bug. If defined, the size of
505 strings is redundantly recorded in sdata structures so that it can
506 be compared to the sizes recorded in Lisp strings.])
508 if test x$ac_gc_check_string_overrun != x ; then
509 AC_DEFINE(GC_CHECK_STRING_OVERRUN, 1,
510 [Define this to check for short string overrun.])
512 if test x$ac_gc_check_string_free_list != x ; then
513 AC_DEFINE(GC_CHECK_STRING_FREE_LIST, 1,
514 [Define this to check the string free list.])
516 if test x$ac_xmalloc_overrun != x ; then
517 AC_DEFINE(XMALLOC_OVERRUN_CHECK, 1,
518 [Define this to check for malloc buffer overrun.])
520 if test x$ac_gc_check_cons_list != x ; then
521 AC_DEFINE(GC_CHECK_CONS_LIST, 1,
522 [Define this to check for errors in cons list.])
524 if test x$ac_glyphs_debug != x ; then
525 AC_DEFINE(GLYPH_DEBUG, 1,
526 [Define this to enable glyphs debugging code.])
529 dnl The name of this option is unfortunate. It predates, and has no
530 dnl relation to, the "sampling-based elisp profiler" added in 24.3.
531 dnl Actually, it stops it working.
532 dnl https://lists.gnu.org/archive/html/emacs-devel/2012-11/msg00393.html
533 AC_ARG_ENABLE(profiling,
534 [AS_HELP_STRING([--enable-profiling],
535 [build emacs with low-level, gprof profiling support.
536 Mainly useful for debugging Emacs itself. May not work on
537 all platforms. Stops profiler.el working.])],
538 [ac_enable_profiling="${enableval}"],[])
539 if test x$ac_enable_profiling != x ; then
540 PROFILING_CFLAGS="-DPROFILING=1 -pg"
544 AC_SUBST(PROFILING_CFLAGS)
546 AC_ARG_ENABLE(autodepend,
547 [AS_HELP_STRING([--enable-autodepend],
548 [automatically generate dependencies to .h-files.
549 Requires gcc, enabled if found.])],
550 [ac_enable_autodepend="${enableval}"],[ac_enable_autodepend=yes])
552 AC_ARG_ENABLE(gtk-deprecation-warnings,
553 [AS_HELP_STRING([--enable-gtk-deprecation-warnings],
554 [Show Gtk+/Gdk deprecation warnings for Gtk+ >= 3.0])],
555 [ac_enable_gtk_deprecation_warnings="${enableval}"],[])
558 AC_ARG_ENABLE([build-details],
559 [AS_HELP_STRING([--disable-build-details],
560 [Make the build more deterministic by omitting host
561 names, time stamps, etc. from the output.])],
562 [test "$enableval" = no && BUILD_DETAILS=--no-build-details])
563 AC_SUBST([BUILD_DETAILS])
565 dnl This used to use changequote, but, apart from 'changequote is evil'
566 dnl per the autoconf manual, we can speed up autoconf somewhat by quoting
567 dnl the great gob of text. Thus it's not processed for possible expansion.
568 dnl Just make sure the brackets remain balanced.
570 dnl Since Emacs can't find matching pairs of quotes, boundaries are
571 dnl indicated by comments.
575 ### If you add support for a new configuration, add code to this
576 ### switch statement to recognize your configuration name and select
577 ### the appropriate opsys.
579 ### As far as handling version numbers on operating systems is
580 ### concerned, make sure things will fail in a fixable way. If
581 ### /etc/MACHINES doesn't say anything about version numbers, be
582 ### prepared to handle anything reasonably. If version numbers
583 ### matter, be sure /etc/MACHINES says something about it.
586 case "${canonical}" in
588 ## GNU/Linux and similar ports
603 ## FreeBSD kernel + glibc based userland
614 *-*-openbsd* | *-*-mirbsd* )
618 ## Apple Darwin / macOS
620 case "${canonical}" in
621 *-apple-darwin[0-9].*) unported=yes ;;
622 i[3456]86-* | x86_64-* ) ;;
626 ## FIXME: Find a way to use Fink if available (Bug#11507).
629 ## Chromium Native Client
639 ## HP 9000 series 700 and 800, running HP/UX
643 hppa*-hp-hpux1[1-9]* )
645 CFLAGS="-D_INCLUDE__STDC_A1_SOURCE $CFLAGS"
649 rs6000-ibm-aix4.[23]* )
652 powerpc-ibm-aix4.[23]* )
655 rs6000-ibm-aix[56]* )
658 powerpc-ibm-aix[5-9]* | powerpc-ibm-aix[1-9][0-9]* )
664 | i[3456]86-*-solaris2* | i[3456]86-*-sunos5* \
665 | x86_64-*-solaris2* | x86_64-*-sunos5*)
666 case "${canonical}" in
668 amd64-*-*|x86_64-*-*) ;;
672 case "${canonical}" in
673 *-sunos5.[1-9][0-9]* | *-solaris2.[1-9][0-9]* )
675 emacs_check_sunpro_c=yes
677 *-sunos5.[1-5]* | *-solaris2.[1-5]* ) unported=yes ;;
678 ## Note that Emacs 23.1's NEWS said the following would be dropped.
679 *-sunos5.6* | *-solaris2.6* )
683 ## 5.7 EOL Aug 2008, 5.8 EOL Mar 2012.
684 *-sunos5.[7-9]* | *-solaris2.[7-9]* )
686 emacs_check_sunpro_c=yes
689 ## Watch out for a compiler that we know will not work.
690 case "${canonical}" in
691 *-solaris* | *-sunos5* )
692 if [ "x$CC" = x/usr/ucb/cc ]; then
693 ## /usr/ucb/cc doesn't work;
694 ## we should find some other compiler that does work.
702 ## Intel 386 machines where we don't care about the manufacturer.
704 case "${canonical}" in
705 *-darwin* ) opsys=darwin ;;
708 # MinGW overrides and adds some system headers in nt/inc.
709 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
711 *-sysv4.2uw* ) opsys=unixware ;;
712 *-sysv5uw* ) opsys=unixware ;;
713 *-sysv5OpenUNIX* ) opsys=unixware ;;
714 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
720 case "${canonical}" in
723 # MinGW overrides and adds some system headers in nt/inc.
724 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
726 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
735 ### If the code above didn't choose an operating system, just choose
736 ### an operating system based on the configuration name. You really
737 ### only want to use this when you have no idea what the right
738 ### operating system is; if you know what operating systems a machine
739 ### runs, it's cleaner to make it explicit in the case statement
741 if test x"${opsys}" = x; then
742 case "${canonical}" in
743 *-gnu* ) opsys=gnu ;;
753 if test $unported = yes; then
754 AC_MSG_ERROR([Emacs does not support '${canonical}' systems.
755 If you think it should, please send a report to ${PACKAGE_BUGREPORT}.
756 Check 'etc/MACHINES' for recognized configuration names.])
759 #### Choose a compiler.
761 dnl Don't bother to test for C89.
762 AC_DEFUN([_AC_PROG_CC_C89], [$2])
764 dnl Sets GCC=yes if using gcc.
765 AC_PROG_CC([gcc cc cl clang "$XCRUN gcc" "$XCRUN clang"])
766 if test -n "$XCRUN"; then
767 AC_CHECK_PROGS(AR, [ar "$XCRUN ar"])
768 test -n "$AR" && export AR
771 dnl Emacs needs C99 or later.
776 if test x$GCC = xyes; then
777 test "x$GCC_TEST_OPTIONS" != x && CC="$CC $GCC_TEST_OPTIONS"
780 # Avoid gnulib's tests for -lcrypto, so that there's no static dependency on it.
781 AC_DEFUN([gl_CRYPTO_CHECK])
782 # Avoid gnulib's tests for HAVE_WORKING_O_NOATIME and HAVE_WORKING_O_NOFOLLOW,
783 # as we don't use them.
784 AC_DEFUN([gl_FCNTL_O_FLAGS])
785 # Avoid gnulib's test for pthread_sigmask.
787 for func in $ac_func_list; do
788 test $func = pthread_sigmask || AS_VAR_APPEND([funcs], [" $func"])
791 # Use the system putenv even if it lacks GNU features, as we don't need them,
792 # and the gnulib replacement runs afoul of a FreeBSD 10.1 bug; see Bug#19874.
793 AC_CHECK_FUNCS_ONCE([putenv])
794 AC_DEFUN([gl_FUNC_PUTENV],
795 [test "$ac_cv_func_putenv" = yes || REPLACE_PUTENV=1])
796 # Emacs does not use the wchar or wctype-h modules.
797 AC_DEFUN([gt_TYPE_WINT_T],
798 [GNULIB_OVERRIDES_WINT_T=0
799 AC_SUBST([GNULIB_OVERRIDES_WINT_T])])
801 # Initialize gnulib right after choosing the compiler.
802 dnl Amongst other things, this sets AR and ARFLAGS.
805 if test "$ac_test_CFLAGS" != set; then
806 # It's helpful to have C macros available to GDB, so prefer -g3 to -g
807 # if -g3 works and the user does not specify CFLAGS.
808 # This test must follow gl_EARLY; otherwise AC_LINK_IFELSE complains.
811 emacs_g3_CFLAGS='-g3';;
813 emacs_g3_CFLAGS='-g3 -O2';;
817 if test -n "$emacs_g3_CFLAGS"; then
818 emacs_save_CFLAGS=$CFLAGS
819 CFLAGS=$emacs_g3_CFLAGS
820 AC_CACHE_CHECK([whether $CC accepts $emacs_g3_CFLAGS],
821 [emacs_cv_prog_cc_g3],
822 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
823 [emacs_cv_prog_cc_g3=yes],
824 [emacs_cv_prog_cc_g3=no])])
825 if test $emacs_cv_prog_cc_g3 != yes; then
826 CFLAGS=$emacs_save_CFLAGS
828 if test $opsys = mingw32; then
829 CFLAGS="$CFLAGS -gdwarf-2"
836 # No optimization flag was inferred for this non-GCC compiler.
837 # Try -O. This is needed for xlc on AIX; see Bug#14258.
838 emacs_save_CFLAGS=$CFLAGS
839 test -z "$CFLAGS" || CFLAGS="$CFLAGS "
841 AC_CACHE_CHECK([whether $CC accepts -O],
842 [emacs_cv_prog_cc_o],
843 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
844 [emacs_cv_prog_cc_o=yes],
845 [emacs_cv_prog_cc_o=no])])
846 if test $emacs_cv_prog_cc_o != yes; then
847 CFLAGS=$emacs_save_CFLAGS
852 # gl_GCC_VERSION_IFELSE([major], [minor], [run-if-found], [run-if-not-found])
853 # ---------------------------------------------------------------------------
854 # If $CPP is gcc-MAJOR.MINOR or newer, then run RUN-IF-FOUND.
855 # Otherwise, run RUN-IF-NOT-FOUND.
856 AC_DEFUN([gl_GCC_VERSION_IFELSE],
860 #if ($1) < __GNUC__ || (($1) == __GNUC__ && ($2) <= __GNUC_MINOR__)
863 # error "your version of gcc is older than $1.$2"
870 AC_ARG_ENABLE([gcc-warnings],
871 [AS_HELP_STRING([--enable-gcc-warnings@<:@=TYPE@:>@],
872 [control generation of GCC warnings. The TYPE 'yes'
873 means to fail if any warnings are issued; 'warn-only'
874 means issue warnings without failing (default for
875 developer builds); 'no' means disable warnings
876 (default for non-developer builds).])],
879 *) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
881 gl_gcc_warnings=$enableval],
882 [# By default, use 'warn-only' if it looks like the invoker of 'configure'
883 # is a developer as opposed to a builder. This is most likely true
884 # if GCC is recent enough and there is a .git directory or file;
885 # however, if there is also a .tarball-version file it is probably
886 # just a release imported into Git for patch management.
888 if test -e "$srcdir"/.git && test ! -f "$srcdir"/.tarball-version; then
889 gl_GCC_VERSION_IFELSE([5], [3], [gl_gcc_warnings=warn-only])
892 AC_ARG_ENABLE([check-lisp-object-type],
893 [AS_HELP_STRING([--enable-check-lisp-object-type],
894 [Enable compile-time checks for the Lisp_Object data type,
895 which can catch some bugs during development.
896 The default is "no" if --enable-gcc-warnings is "no".])])
897 if test "${enable_check_lisp_object_type-$gl_gcc_warnings}" != "no"; then
898 AC_DEFINE([CHECK_LISP_OBJECT_TYPE], 1,
899 [Define to enable compile-time checks for the Lisp_Object data type.])
902 # clang is unduly picky about some things.
903 AC_CACHE_CHECK([whether the compiler is clang], [emacs_cv_clang],
910 [emacs_cv_clang=yes],
911 [emacs_cv_clang=no])])
914 # When compiling with GCC, prefer -isystem to -I when including system
915 # include files, to avoid generating useless diagnostics for the files.
916 AS_IF([test $gl_gcc_warnings = no],
919 AS_IF([test "$emacs_cv_clang" = yes],
921 # Turn off some warnings if supported.
922 gl_WARN_ADD([-Wno-switch])
923 gl_WARN_ADD([-Wno-pointer-sign])
924 gl_WARN_ADD([-Wno-string-plus-int])
925 gl_WARN_ADD([-Wno-unknown-attributes])
930 # This, $nw, is the list of warnings we disable.
933 case $with_x_toolkit in
934 lucid | athena | motif)
935 # Old toolkits mishandle 'const'.
936 nw="$nw -Wwrite-strings"
939 AS_IF([test $gl_gcc_warnings = yes],
940 [WERROR_CFLAGS=-Werror])
942 nw="$nw -Wduplicated-branches" # Too many false alarms
943 nw="$nw -Wformat-overflow=2" # False alarms due to GCC bug 80776
944 nw="$nw -Wsystem-headers" # Don't let system headers trigger warnings
945 nw="$nw -Woverlength-strings" # Not a problem these days
946 nw="$nw -Wformat-nonliteral" # we do this a lot
947 nw="$nw -Wvla" # Emacs uses <vla.h>.
948 nw="$nw -Wswitch-default" # Too many warnings for now
949 nw="$nw -Wunused-const-variable=2" # lisp.h declares const objects.
950 nw="$nw -Winline" # OK to ignore 'inline'
951 nw="$nw -Wstrict-overflow" # OK to optimize assuming that
952 # signed overflow has undefined behavior
953 nw="$nw -Wsync-nand" # irrelevant here, and provokes ObjC warning
954 nw="$nw -Wunsafe-loop-optimizations" # OK to suppress unsafe optimizations
955 nw="$nw -Wbad-function-cast" # These casts are no worse than others.
957 # Emacs doesn't care about shadowing; see
958 # <https://lists.gnu.org/archive/html/emacs-diffs/2011-11/msg00265.html>.
961 # Emacs's use of alloca inhibits protecting the stack.
962 nw="$nw -Wstack-protector"
964 # Emacs's use of partly-const functions such as Fgnutls_available_p
965 # make this option problematic.
966 nw="$nw -Wsuggest-attribute=const"
968 # Emacs's use of partly-pure functions such as CHECK_TYPE make this
969 # option problematic.
970 nw="$nw -Wsuggest-attribute=pure"
972 # This part is merely for shortening the command line,
973 # since -Wall implies -Wswitch.
976 # This part is merely for shortening the command line,
977 # since -Wno-FOO needs to be added below regardless.
978 nw="$nw -Wmissing-field-initializers"
979 nw="$nw -Woverride-init"
980 nw="$nw -Wtype-limits"
981 nw="$nw -Wunused-parameter"
983 if test "$emacs_cv_clang" = yes; then
984 nw="$nw -Wcast-align"
985 nw="$nw -Wdouble-promotion"
986 nw="$nw -Wmissing-braces"
989 # These cause too much noise in the MinGW build
990 if test $opsys = mingw32; then
991 nw="$nw -Wpointer-sign"
992 nw="$nw -Wsuggest-attribute=format"
995 gl_MANYWARN_ALL_GCC([ws])
996 gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
1000 gl_WARN_ADD([-Wredundant-decls]) # Prefer this, as we don't use Bison.
1001 gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
1002 gl_WARN_ADD([-Wno-override-init]) # More trouble than it is worth
1003 gl_WARN_ADD([-Wno-sign-compare]) # Too many warnings for now
1004 gl_WARN_ADD([-Wno-type-limits]) # Too many warnings for now
1005 gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
1006 gl_WARN_ADD([-Wno-format-nonliteral])
1008 # clang is unduly picky about braces.
1009 if test "$emacs_cv_clang" = yes; then
1010 gl_WARN_ADD([-Wno-missing-braces])
1013 # This causes too much noise in the MinGW build
1014 if test $opsys = mingw32; then
1015 gl_WARN_ADD([-Wno-pointer-sign])
1018 AC_DEFINE([GCC_LINT], [1], [Define to 1 if --enable-gcc-warnings.])
1019 AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
1020 AH_VERBATIM([GNULIB_PORTCHECK_FORTIFY_SOURCE],
1021 [/* Enable compile-time and run-time bounds-checking, and some warnings,
1022 without upsetting glibc 2.15+. */
1023 #if (defined GNULIB_PORTCHECK && !defined _FORTIFY_SOURCE \
1024 && defined __OPTIMIZE__ && __OPTIMIZE__)
1025 # define _FORTIFY_SOURCE 2
1030 # clang is picky about these regardless of whether
1031 # --enable-gcc-warnings is specified.
1032 if test "$emacs_cv_clang" = yes; then
1033 gl_WARN_ADD([-Wno-initializer-overrides])
1034 gl_WARN_ADD([-Wno-tautological-compare])
1035 gl_WARN_ADD([-Wno-tautological-constant-out-of-range-compare])
1038 # Use a slightly smaller set of warning options for lib/.
1040 nw="$nw -Wunused-macros"
1041 gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
1043 AC_SUBST([WERROR_CFLAGS])
1044 AC_SUBST([GNULIB_WARN_CFLAGS])
1053 AC_ARG_ENABLE(link-time-optimization,
1054 [AS_HELP_STRING([--enable-link-time-optimization],
1055 [build with link-time optimization
1056 (experimental; see INSTALL)])],
1057 if test "${enableval}" != "no"; then
1059 if test "$emacs_cv_clang" = yes; then
1060 AC_MSG_CHECKING([whether link-time optimization is supported by clang])
1061 GOLD_PLUGIN=`$CC -print-file-name=LLVMgold.so 2>/dev/null`
1062 if test -x "$GOLD_PLUGIN"; then
1065 elif test x$GCC = xyes; then
1066 AC_MSG_CHECKING([whether link-time optimization is supported by gcc])
1067 CPUS=`getconf _NPROCESSORS_ONLN 2>/dev/null`
1068 if test x$CPUS != x; then
1074 AC_MSG_ERROR([Link-time optimization is not supported with your compiler.])
1076 if test -z "$LTO"; then
1080 CFLAGS="$CFLAGS $LTO"
1081 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1082 [ac_lto_supported=yes], [ac_lto_supported=no])
1083 CFLAGS="$old_CFLAGS"
1085 AC_MSG_RESULT([$ac_lto_supported])
1086 if test "$ac_lto_supported" = "yes"; then
1087 CFLAGS="$CFLAGS $LTO"
1088 if test "$emacs_cv_clang" = yes; then
1089 AC_MSG_WARN([Please read INSTALL before using link-time optimization with clang])
1090 # WARNING: 'ar --plugin ...' doesn't work without
1091 # command, so plugin name is appended to ARFLAGS.
1092 ARFLAGS="cru --plugin $GOLD_PLUGIN"
1093 RANLIB="$RANLIB --plugin $GOLD_PLUGIN"
1095 dnl The following is needed for GCC 4.9.0. The GCC 4.9.0 release notes
1096 dnl suggest that instead of -ffat-lto-objects we should use gcc-ar and
1097 dnl gcc-ranlib in place of ar and ranlib, but gcc-ar makes /usr/bin/ar
1098 dnl dump core on Fedora 20, so play it safe for now.
1099 gl_COMPILER_OPTION_IF([-ffat-lto-objects],
1100 [CFLAGS="$CFLAGS -ffat-lto-objects"])
1106 dnl Automake replacements.
1107 AC_DEFUN([AM_CONDITIONAL],
1111 dnl Prefer silent make output. For verbose output, use
1112 dnl 'configure --disable-silent-rules' or 'make V=1' .
1113 dnl This code is adapted from Automake.
1114 dnl Although it can be simplified now that GNU Make is assumed,
1115 dnl the simplification hasn't been done yet.
1116 AC_ARG_ENABLE([silent-rules],
1118 [--disable-silent-rules],
1119 [verbose build output (undo: "make V=0")])])
1120 if test "$enable_silent_rules" = no; then
1121 AM_DEFAULT_VERBOSITY=1
1123 AM_DEFAULT_VERBOSITY=0
1126 AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
1128 AC_SUBST([AM_DEFAULT_V])
1129 AC_SUBST([AM_DEFAULT_VERBOSITY])
1131 dnl Some other nice autoconf tests.
1133 dnl These are commented out, since gl_EARLY and/or Autoconf already does them.
1135 dnl if test "x$RANLIB" = x; then
1140 dnl Sadly, AC_PROG_LN_S is too restrictive. It also tests whether links
1141 dnl can be made to directories. This is not relevant for our usage, and
1142 dnl excludes some cases that work fine for us. Eg MS Windows or files
1143 dnl hosted on AFS, both examples where simple links work, but links to
1144 dnl directories fail. We use a cut-down version instead.
1147 AC_CACHE_CHECK([command to symlink files in the same directory], [emacs_cv_ln_s_fileonly],
1148 [rm -f conf$$ conf$$.file
1150 emacs_cv_ln_s_fileonly='cp -p'
1152 dnl On MinGW, ensure we will call the MSYS /bin/ln.exe, not some
1153 dnl random program in the current directory.
1154 if (echo >conf$$.file) 2>/dev/null; then
1155 if ln -s conf$$.file conf$$ 2>/dev/null; then
1156 if test "$opsys" = "mingw32"; then
1157 emacs_cv_ln_s_fileonly='/bin/ln -s'
1159 emacs_cv_ln_s_fileonly='ln -s'
1161 elif ln conf$$.file conf$$ 2>/dev/null; then
1162 if test "$opsys" = "mingw32"; then
1163 emacs_cv_ln_s_fileonly=/bin/ln
1165 emacs_cv_ln_s_fileonly=ln
1170 rm -f conf$$ conf$$.file])
1171 LN_S_FILEONLY=$emacs_cv_ln_s_fileonly
1173 AC_SUBST(LN_S_FILEONLY)
1176 dnl AC_PROG_LN_S sets LN_S to 'cp -pR' for MinGW, on the premise that 'ln'
1177 dnl doesn't support links to directories, as in "ln file dir". But that
1178 dnl use is non-portable, and OTOH MinGW wants to use hard links for Emacs
1179 dnl executables at "make install" time.
1180 dnl See https://lists.gnu.org/archive/html/emacs-devel/2013-04/msg00475.html
1181 dnl for more details.
1182 if test "$opsys" = "mingw32"; then
1186 dnl On some Debian versions, "install-info" prints irritating messages
1187 dnl "This is not dpkg install-info anymore, but GNU install-info"
1188 dnl if called via an absolute file name.
1189 dnl Use the entirely-identical-but-quieter ginstall-info instead if present.
1190 dnl Sadly some people may have an old ginstall-info installed on
1191 dnl non-Debian systems, so we can't use this.
1192 dnl AC_PATH_PROGS(INSTALL_INFO, [ginstall-info install-info], :,
1193 dnl $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1195 AC_PATH_PROG(INSTALL_INFO, install-info, :,
1196 $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1197 dnl Don't use GZIP, which is used by gzip for additional parameters.
1198 AC_PATH_PROG(GZIP_PROG, gzip)
1200 test $with_compress_install != yes && test -n "$GZIP_PROG" && \
1201 GZIP_PROG=" # $GZIP_PROG # (disabled by configure --without-compress-install)"
1203 AC_CACHE_CHECK([for 'find' args to delete a file],
1204 [emacs_cv_find_delete],
1205 [if touch conftest.tmp && find conftest.tmp -delete 2>/dev/null &&
1206 test ! -f conftest.tmp
1207 then emacs_cv_find_delete="-delete"
1208 else emacs_cv_find_delete="-exec rm -f {} ';'"
1210 FIND_DELETE=$emacs_cv_find_delete
1211 AC_SUBST([FIND_DELETE])
1215 if test $opsys = gnu-linux; then
1216 if test "${SETFATTR+set}" != set; then
1217 AC_CACHE_CHECK([for setfattr],
1218 [emacs_cv_prog_setfattr],
1220 if (setfattr -n user.pax.flags conftest.tmp) >/dev/null 2>&1; then
1221 emacs_cv_prog_setfattr=yes
1223 emacs_cv_prog_setfattr=no
1225 if test "$emacs_cv_prog_setfattr" = yes; then
1226 PAXCTL_notdumped='$(SETFATTR) -n user.pax.flags -v er'
1232 AC_SUBST([SETFATTR])
1235 case $opsys,$PAXCTL_notdumped,$emacs_uname_r in
1236 gnu-linux,,* | netbsd,,[0-7].*)
1237 AC_PATH_PROG([PAXCTL], [paxctl], [],
1238 [$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR/usr/sbin])
1239 if test -n "$PAXCTL"; then
1240 if test "$opsys" = netbsd; then
1241 PAXCTL_dumped='$(PAXCTL) +a'
1242 PAXCTL_notdumped=$PAXCTL_dumped
1244 AC_MSG_CHECKING([whether binaries have a PT_PAX_FLAGS header])
1245 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1246 [if $PAXCTL -v conftest$EXEEXT >/dev/null 2>&1; then
1247 AC_MSG_RESULT([yes])
1252 if test -n "$PAXCTL"; then
1253 PAXCTL_dumped='$(PAXCTL) -zex'
1254 PAXCTL_notdumped='$(PAXCTL) -r'
1259 AC_SUBST([PAXCTL_dumped])
1260 AC_SUBST([PAXCTL_notdumped])
1262 ## Require makeinfo >= 4.13 (last of the 4.x series) to build the manuals.
1263 if test "${MAKEINFO:=makeinfo}" != "no"; then
1264 case `($MAKEINFO --version) 2>/dev/null` in
1265 *' (GNU texinfo) '4.1[[3-9]]* | \
1266 *' (GNU texinfo) '[[5-9]]* | \
1267 *' (GNU texinfo) '[[1-9][0-9]]* ) ;;
1272 ## Makeinfo is unusual. For a released Emacs, the manuals are
1273 ## pre-built, and not deleted by the normal clean rules. makeinfo is
1274 ## therefore in the category of "special tools" not normally required, which
1275 ## configure does not have to check for (eg autoconf itself).
1276 ## In a repository checkout on the other hand, the manuals are not included.
1277 ## So makeinfo is a requirement to build from the repository, and configure
1278 ## should test for it as it does for any other build requirement.
1279 ## We use the presence of $srcdir/info/emacs to distinguish a release,
1280 ## with pre-built manuals, from a repository checkout.
1283 if test "$MAKEINFO" = "no"; then
1285 if test "x${with_makeinfo}" = "xno"; then
1287 elif test ! -e "$srcdir/info/emacs" && test ! -e "$srcdir/info/emacs.info"; then
1288 AC_MSG_ERROR( [You do not seem to have makeinfo >= 4.13, and your
1289 source tree does not seem to have pre-built manuals in the 'info' directory.
1290 Either install a suitable version of makeinfo, or re-run configure
1291 with the '--without-makeinfo' option to build without the manuals.] )
1294 AC_SUBST([MAKEINFO])
1295 AC_SUBST(HAVE_MAKEINFO)
1297 if test $opsys = mingw32; then
1298 DOCMISC_W32=efaq-w32
1302 AC_SUBST(DOCMISC_W32)
1304 dnl Add our options to ac_link now, after it is set up.
1306 if test x$GCC = xyes; then
1307 test "x$GCC_LINK_TEST_OPTIONS" != x && \
1308 ac_link="$ac_link $GCC_LINK_TEST_OPTIONS"
1310 test "x$NON_GCC_LINK_TEST_OPTIONS" != x && \
1311 ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
1314 dnl We need -znocombreloc if we're using a relatively recent GNU ld.
1315 dnl If we can link with the flag, it shouldn't do any harm anyhow.
1316 dnl Treat GCC specially since it just gives a non-fatal 'unrecognized option'
1317 dnl if not built to support GNU ld.
1319 dnl For a long time, -znocombreloc was added to LDFLAGS rather than
1320 dnl LD_SWITCH_SYSTEM_TEMACS. That is:
1321 dnl * inappropriate, as LDFLAGS is a user option but this is essential.
1322 dnl Eg "make LDFLAGS=... all" could run into problems,
1323 dnl https://bugs.debian.org/684788
1324 dnl * unnecessary, since temacs is the only thing that actually needs it.
1325 dnl Indeed this is where it was originally, prior to:
1326 dnl https://lists.gnu.org/archive/html/emacs-pretest-bug/2004-03/msg00170.html
1327 if test x$GCC = xyes; then
1328 LDFLAGS_NOCOMBRELOC="-Wl,-znocombreloc"
1330 LDFLAGS_NOCOMBRELOC="-znocombreloc"
1333 AC_CACHE_CHECK([for -znocombreloc], [emacs_cv_znocombreloc],
1334 [late_LDFLAGS="$LDFLAGS"
1335 LDFLAGS="$LDFLAGS $LDFLAGS_NOCOMBRELOC"
1337 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1338 [emacs_cv_znocombreloc=yes], [emacs_cv_znocombreloc=no])
1340 LDFLAGS="$late_LDFLAGS"])
1342 if test x$emacs_cv_znocombreloc = xno; then
1343 LDFLAGS_NOCOMBRELOC=
1347 AC_CACHE_CHECK([whether addresses are sanitized],
1348 [emacs_cv_sanitize_address],
1351 [[#ifndef __has_feature
1352 #define __has_feature(f) 0
1354 #if defined __SANITIZE_ADDRESS__ || __has_feature (address_sanitizer)
1356 error "Addresses are not sanitized.";
1359 [emacs_cv_sanitize_address=yes],
1360 [emacs_cv_sanitize_address=no])])
1362 dnl The function dump-emacs will not be defined and temacs will do
1363 dnl (load "loadup") automatically unless told otherwise.
1364 test "x$CANNOT_DUMP" = "x" && CANNOT_DUMP=no
1366 nacl) CANNOT_DUMP=yes ;;
1369 if test "$CANNOT_DUMP" = "yes"; then
1370 AC_DEFINE(CANNOT_DUMP, 1, [Define if Emacs cannot be dumped on your system.])
1371 elif test "$emacs_cv_sanitize_address" = yes; then
1372 AC_MSG_WARN([[Addresses are sanitized; suggest CANNOT_DUMP=yes]])
1375 AC_SUBST(CANNOT_DUMP)
1378 UNEXEC_OBJ=unexelf.o
1380 # MSDOS uses unexcoff.o
1382 UNEXEC_OBJ=unexaix.o
1388 UNEXEC_OBJ=unexmacosx.o
1391 UNEXEC_OBJ=unexhp9k800.o
1394 UNEXEC_OBJ=unexw32.o
1397 # Use the Solaris dldump() function, called from unexsol.c, to dump
1398 # emacs, instead of the generic ELF dump code found in unexelf.c.
1399 # The resulting binary has a complete symbol table, and is better
1400 # for debugging and other observability tools (debuggers, pstack, etc).
1402 # It is likely that dldump() works with older Solaris too, but this has
1403 # not been tested, so for now this change is for Solaris 10 or newer.
1404 UNEXEC_OBJ=unexsol.o
1407 test "$CANNOT_DUMP" = "yes" && UNEXEC_OBJ=
1412 ## Let 'ld' find image libs and similar things in /usr/local/lib.
1413 ## The system compiler, GCC, has apparently been modified to not
1414 ## look there, contrary to what a stock GCC would do.
1415 ### It's not our place to do this. See bug#10313#17.
1416 ### LD_SWITCH_SYSTEM=-L/usr/local/lib
1421 ## cpp test was "ifdef __mips__", but presumably this is equivalent...
1422 case $host_cpu in mips*) LD_SWITCH_SYSTEM="-G 0";; esac
1426 ### It's not our place to do this. See bug#10313#17.
1427 ### LD_SWITCH_SYSTEM="-Wl,-rpath,/usr/pkg/lib -L/usr/pkg/lib -Wl,-rpath,/usr/local/lib -L/usr/local/lib"
1432 ## Han Boetes <han@boetes.org> says this is necessary,
1433 ## otherwise Emacs dumps core on elf systems.
1434 LD_SWITCH_SYSTEM="-Z"
1437 AC_SUBST(LD_SWITCH_SYSTEM)
1439 ac_link="$ac_link $LD_SWITCH_SYSTEM"
1441 ## This setting of LD_SWITCH_SYSTEM references LD_SWITCH_X_SITE_RPATH,
1442 ## which has not been defined yet. When this was handled with cpp,
1443 ## it was expanded to null when configure sourced the s/*.h file.
1444 ## Thus LD_SWITCH_SYSTEM had different values in configure and the Makefiles.
1445 ## FIXME it would be cleaner to put this in LD_SWITCH_SYSTEM_TEMACS
1446 ## (or somesuch), but because it is supposed to go at the _front_
1447 ## of LD_SWITCH_SYSTEM, we cannot do that in exactly the same way.
1448 ## Compare with the gnu-linux case below, which added to the end
1449 ## of LD_SWITCH_SYSTEM, and so can instead go at the front of
1450 ## LD_SWITCH_SYSTEM_TEMACS.
1453 LD_SWITCH_SYSTEM="\$(LD_SWITCH_X_SITE_RPATH) $LD_SWITCH_SYSTEM" ;;
1460 AC_CHECK_DECL([__ELF__])
1461 if test "$ac_cv_have_decl___ELF__" = "yes"; then
1462 ## With ELF, make sure that all common symbols get allocated to in the
1463 ## data section. Otherwise, the dump of temacs may miss variables in
1464 ## the shared library that have been initialized. For example, with
1465 ## GNU libc, __malloc_initialized would normally be resolved to the
1466 ## shared library's .bss section, which is fatal.
1467 if test "x$GCC" = "xyes"; then
1468 C_SWITCH_MACHINE="-fno-common"
1470 AC_MSG_ERROR([Non-GCC compilers are not supported.])
1473 dnl This was the unexalpha.c case. Removed in 24.1, 2010-07-24,
1474 dnl albeit under the mistaken assumption that said file
1475 dnl was no longer used.
1476 AC_MSG_ERROR([Non-ELF systems are not supported since Emacs 24.1.])
1480 AC_SUBST(C_SWITCH_MACHINE)
1482 AC_SUBST(UNEXEC_OBJ)
1485 ## Some programs in src produce warnings saying certain subprograms
1486 ## are too complex and need a MAXMEM value greater than 2000 for
1487 ## additional optimization. --nils@exp-math.uni-essen.de
1488 test "$opsys" = "aix4.2" && test "x$GCC" != "xyes" && \
1489 C_SWITCH_SYSTEM="-ma -qmaxmem=4000"
1490 if test "$opsys" = "mingw32"; then
1491 case "$canonical" in
1492 x86_64-*-mingw*) C_SWITCH_SYSTEM="-mtune=generic" ;;
1493 *) C_SWITCH_SYSTEM="-mtune=pentium4" ;;
1496 ## gnu-linux might need -D_BSD_SOURCE on old libc5 systems.
1497 ## It is redundant in glibc2, since we define _GNU_SOURCE.
1498 AC_SUBST(C_SWITCH_SYSTEM)
1503 ## IBM's X11R5 uses -lIM and -liconv in AIX 3.2.2.
1504 aix4-2) LIBS_SYSTEM="-lrts -lIM -liconv" ;;
1506 freebsd|dragonfly) LIBS_SYSTEM="-lutil" ;;
1508 hpux*) LIBS_SYSTEM="-l:libdld.sl" ;;
1510 sol2*) LIBS_SYSTEM="-lsocket -lnsl" ;;
1512 ## Motif needs -lgen.
1513 unixware) LIBS_SYSTEM="-lsocket -lnsl -lelf -lgen" ;;
1516 AC_SUBST(LIBS_SYSTEM)
1518 ### Make sure subsequent tests use flags consistent with the build flags.
1520 if test x"${OVERRIDE_CPPFLAGS}" != x; then
1521 CPPFLAGS="${OVERRIDE_CPPFLAGS}"
1523 CPPFLAGS="$C_SWITCH_SYSTEM $C_SWITCH_MACHINE $CPPFLAGS"
1526 # Suppress obsolescent Autoconf test for size_t; Emacs assumes C99 or better.
1527 AC_DEFUN([AC_TYPE_SIZE_T])
1528 # Likewise for obsolescent test for uid_t, gid_t; Emacs assumes them.
1529 AC_DEFUN([AC_TYPE_UID_T])
1531 # sqrt and other floating-point functions such as fmod and frexp
1532 # are found in -lm on many systems.
1534 AC_SEARCH_LIBS([sqrt], [m])
1535 if test "X$LIBS" = "X$OLD_LIBS"; then
1538 LIB_MATH=$ac_cv_search_sqrt
1542 dnl Current possibilities handled by sed (aix4-2 -> aix,
1543 dnl gnu-linux -> gnu/linux, etc.):
1544 dnl gnu, gnu/linux, gnu/kfreebsd, aix, cygwin, darwin, hpux.
1545 dnl And special cases: berkeley-unix, usg-unix-v, ms-dos, windows-nt.
1546 SYSTEM_TYPE=`echo $opsys | sed -e 's/[[0-9]].*//' -e 's|-|/|'`
1553 ## Adding -lm confuses the dynamic linker, so omit it.
1556 freebsd | dragonfly )
1557 SYSTEM_TYPE=berkeley-unix
1559 gnu-linux | gnu-kfreebsd )
1561 hpux10-20 | hpux11 )
1565 SYSTEM_TYPE=windows-nt
1567 dnl NB this may be adjusted below.
1569 SYSTEM_TYPE=berkeley-unix
1573 SYSTEM_TYPE=usg-unix-v
1579 AC_DEFINE_UNQUOTED(SYSTEM_TYPE, "$SYSTEM_TYPE",
1580 [The type of system you are compiling for; sets 'system-type'.])
1581 AC_SUBST([SYSTEM_TYPE])
1584 pre_PKG_CONFIG_CFLAGS=$CFLAGS
1585 pre_PKG_CONFIG_LIBS=$LIBS
1587 PKG_PROG_PKG_CONFIG(0.9.0)
1589 dnl EMACS_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4)
1590 dnl acts like PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4,
1591 dnl HAVE_GSTUFF=yes, HAVE_GSTUFF=no) -- see pkg-config man page --
1592 dnl except that it postprocesses CFLAGS as needed for --enable-gcc-warnings.
1593 dnl EMACS_CHECK_MODULES accepts optional 3rd and 4th arguments that
1594 dnl can take the place of the default HAVE_GSTUFF=yes and HAVE_GSTUFF=no
1596 AC_DEFUN([EMACS_CHECK_MODULES],
1597 [PKG_CHECK_MODULES([$1], [$2],
1598 [$1_CFLAGS=`AS_ECHO(["$$1_CFLAGS"]) | sed -e "$edit_cflags"`
1599 m4_default([$3], [HAVE_$1=yes])],
1600 [m4_default([$4], [HAVE_$1=no])])])
1603 if test "${with_sound}" != "no"; then
1604 # Sound support for GNU/Linux, the free BSDs, MinGW, and Cygwin.
1605 AC_CHECK_HEADERS([machine/soundcard.h sys/soundcard.h soundcard.h mmsystem.h],
1606 have_sound_header=yes, [], [
1608 #define WIN32_LEAN_AND_MEAN
1609 #include <windows.h>
1612 test "${with_sound}" = "oss" && test "${have_sound_header}" != "yes" && \
1613 AC_MSG_ERROR([OSS sound support requested but not found.])
1615 if test "${with_sound}" = "bsd-ossaudio" || test "${with_sound}" = "yes"; then
1616 # Emulation library used on NetBSD.
1617 AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
1618 test "${with_sound}" = "bsd-ossaudio" && test -z "$LIBSOUND" && \
1619 AC_MSG_ERROR([bsd-ossaudio sound support requested but not found.])
1620 dnl FIXME? If we did find ossaudio, should we set with_sound=bsd-ossaudio?
1621 dnl Traditionally, we go on to check for alsa too. Does that make sense?
1625 if test "${with_sound}" = "alsa" || test "${with_sound}" = "yes"; then
1627 ALSA_MODULES="alsa >= $ALSA_REQUIRED"
1628 EMACS_CHECK_MODULES([ALSA], [$ALSA_MODULES])
1629 if test $HAVE_ALSA = yes; then
1630 SAVE_CFLAGS="$CFLAGS"
1632 CFLAGS="$ALSA_CFLAGS $CFLAGS"
1633 LIBS="$ALSA_LIBS $LIBS"
1634 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <asoundlib.h>]], [[snd_lib_error_set_handler (0);]])],
1635 emacs_alsa_normal=yes,
1636 emacs_alsa_normal=no)
1637 if test "$emacs_alsa_normal" != yes; then
1638 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <alsa/asoundlib.h>]],
1639 [[snd_lib_error_set_handler (0);]])],
1640 emacs_alsa_subdir=yes,
1641 emacs_alsa_subdir=no)
1642 if test "$emacs_alsa_subdir" != yes; then
1643 AC_MSG_ERROR([pkg-config found alsa, but it does not compile. See config.log for error messages.])
1645 ALSA_CFLAGS="$ALSA_CFLAGS -DALSA_SUBDIR_INCLUDE"
1648 CFLAGS="$SAVE_CFLAGS"
1650 LIBSOUND="$LIBSOUND $ALSA_LIBS"
1651 CFLAGS_SOUND="$CFLAGS_SOUND $ALSA_CFLAGS"
1652 AC_DEFINE(HAVE_ALSA, 1, [Define to 1 if ALSA is available.])
1653 elif test "${with_sound}" = "alsa"; then
1654 AC_MSG_ERROR([ALSA sound support requested but not found.])
1656 fi dnl with_sound = alsa|yes
1658 dnl Define HAVE_SOUND if we have sound support. We know it works and
1659 dnl compiles only on the specified platforms. For others, it
1660 dnl probably doesn't make sense to try.
1661 dnl FIXME So surely we should bypass this whole section if not using
1662 dnl one of these platforms?
1663 if test x$have_sound_header = xyes || test $HAVE_ALSA = yes; then
1665 dnl defined __FreeBSD__ || defined __NetBSD__ || defined __linux__
1666 dnl Adjust the --with-sound help text if you change this.
1667 gnu-linux|freebsd|netbsd|mingw32|cygwin)
1668 AC_DEFINE(HAVE_SOUND, 1, [Define to 1 if you have sound support.])
1674 AC_SUBST(CFLAGS_SOUND)
1677 dnl checks for header files
1678 AC_CHECK_HEADERS_ONCE(
1685 sys/utsname.h pwd.h utmp.h util.h sys/prctl.h)
1687 AC_CACHE_CHECK([for ADDR_NO_RANDOMIZE],
1688 [emacs_cv_personality_addr_no_randomize],
1690 [AC_LANG_PROGRAM([[#include <sys/personality.h>]],
1691 [[personality (personality (0xffffffff)
1692 | ADDR_NO_RANDOMIZE)]])],
1693 [emacs_cv_personality_addr_no_randomize=yes],
1694 [emacs_cv_personality_addr_no_randomize=no])])
1695 if test $emacs_cv_personality_addr_no_randomize = yes; then
1696 AC_DEFINE([HAVE_PERSONALITY_ADDR_NO_RANDOMIZE], [1],
1697 [Define to 1 if personality flag ADDR_NO_RANDOMIZE exists.])
1700 # Note that Solaris has sys/sysinfo.h which defines struct
1701 # sysinfo as well. To make sure that we're using GNU/Linux
1702 # sysinfo, we explicitly set one of its fields.
1703 if test "$ac_cv_header_sys_sysinfo_h" = yes; then
1704 AC_CACHE_CHECK([if Linux sysinfo may be used], [emacs_cv_linux_sysinfo],
1705 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1706 [[struct sysinfo si;
1709 emacs_cv_linux_sysinfo=yes, emacs_cv_linux_sysinfo=no)])
1711 if test $emacs_cv_linux_sysinfo = yes; then
1712 AC_DEFINE([HAVE_LINUX_SYSINFO], 1, [Define to 1 if you have Linux sysinfo function.])
1713 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1714 [[struct sysinfo si; return si.mem_unit]])],
1715 AC_DEFINE(LINUX_SYSINFO_UNIT, 1,
1716 [Define to 1 if Linux sysinfo sizes are in multiples of mem_unit bytes.]))
1720 dnl On Solaris 8 there's a compilation warning for term.h because
1721 dnl it doesn't define 'bool'.
1722 AC_CHECK_HEADERS(term.h, , , -)
1724 AC_CHECK_DECLS([sys_siglist], [], [], [[#include <signal.h>
1726 if test $ac_cv_have_decl_sys_siglist != yes; then
1727 # For Tru64, at least:
1728 AC_CHECK_DECLS([__sys_siglist], [], [], [[#include <signal.h>
1733 AC_CHECK_HEADERS_ONCE(sys/socket.h)
1734 AC_CHECK_HEADERS(net/if.h, , , [AC_INCLUDES_DEFAULT
1735 #if HAVE_SYS_SOCKET_H
1736 #include <sys/socket.h>
1738 AC_CHECK_HEADERS(ifaddrs.h, , , [AC_INCLUDES_DEFAULT
1739 #if HAVE_SYS_SOCKET_H
1740 #include <sys/socket.h>
1742 AC_CHECK_HEADERS(net/if_dl.h, , , [AC_INCLUDES_DEFAULT
1743 #if HAVE_SYS_SOCKET_H
1744 #include <sys/socket.h>
1747 dnl checks for structure members
1748 AC_CHECK_MEMBERS([struct ifreq.ifr_flags, struct ifreq.ifr_hwaddr,
1749 struct ifreq.ifr_netmask, struct ifreq.ifr_broadaddr,
1750 struct ifreq.ifr_addr,
1751 struct ifreq.ifr_addr.sa_len], , ,
1752 [AC_INCLUDES_DEFAULT
1753 #if HAVE_SYS_SOCKET_H
1754 #include <sys/socket.h>
1760 dnl Check for endianness.
1761 dnl AC_C_BIGENDIAN is done by gnulib.
1763 dnl check for Make feature
1766 AUTODEPEND_PARENTS='lib src'
1767 dnl check if we have GCC and autodepend is on.
1768 if test "$GCC" = yes && test "$ac_enable_autodepend" = yes; then
1769 AC_CACHE_CHECK([whether gcc understands -MMD -MF], [emacs_cv_autodepend],
1770 [SAVE_CFLAGS="$CFLAGS"
1771 CFLAGS="$CFLAGS -MMD -MF deps.d -MP"
1772 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1773 [emacs_cv_autodepend=yes], [emacs_cv_autodepend=no])
1774 CFLAGS="$SAVE_CFLAGS"
1775 test -f deps.d || emacs_cv_autodepend=no
1777 if test $emacs_cv_autodepend = yes; then
1781 AC_SUBST(AUTO_DEPEND)
1783 #### Choose a window system.
1785 ## We leave window_system equal to none if
1786 ## we end up building without one. Any new window system should
1787 ## set window_system to an appropriate value and add objects to
1788 ## window-system-specific substs.
1792 if test "$no_x" != yes; then
1796 LD_SWITCH_X_SITE_RPATH=
1797 if test "${x_libraries}" != NONE; then
1798 if test -n "${x_libraries}"; then
1799 LD_SWITCH_X_SITE=-L`AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -L/g'`
1800 LD_SWITCH_X_SITE_RPATH=-Wl,-rpath,`
1801 AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -Wl,-rpath,/g'
1804 x_default_search_path=""
1805 x_search_path=${x_libraries}
1806 if test -z "${x_search_path}"; then
1807 x_search_path=/usr/lib
1809 for x_library in `AS_ECHO(["$x_search_path:"]) | \
1810 sed -e "s/:/ /g" -e p -e "s:/lib[[^ /]]* :/share :g"`; do
1812 ${x_library}/X11/%L/%T/%N%C%S:\
1813 ${x_library}/X11/%l/%T/%N%C%S:\
1814 ${x_library}/X11/%T/%N%C%S:\
1815 ${x_library}/X11/%L/%T/%N%S:\
1816 ${x_library}/X11/%l/%T/%N%S:\
1817 ${x_library}/X11/%T/%N%S"
1818 if test x"${x_default_search_path}" = x; then
1819 x_default_search_path=${x_search_path}
1821 x_default_search_path="${x_search_path}:${x_default_search_path}"
1825 AC_SUBST(LD_SWITCH_X_SITE_RPATH)
1827 if test "${x_includes}" != NONE && test -n "${x_includes}"; then
1828 C_SWITCH_X_SITE=$isystem`AS_ECHO(["$x_includes"]) | sed -e "s/:/ $isystem/g"`
1831 if test x"${x_includes}" = x; then
1832 bitmapdir=/usr/include/X11/bitmaps
1834 # accumulate include directories that have X11 bitmap subdirectories
1836 for bmd in `AS_ECHO(["$x_includes"]) | sed -e 's/:/ /g'`; do
1837 if test -d "${bmd}/X11/bitmaps"; then
1838 bmd_acc="${bmd_acc}:${bmd}/X11/bitmaps"
1840 if test -d "${bmd}/bitmaps"; then
1841 bmd_acc="${bmd_acc}:${bmd}/bitmaps"
1844 bitmapdir=${bmd_acc#:}
1847 test "${with_ns}" = maybe && test "${opsys}" != darwin && with_ns=no
1849 NS_GNUSTEP_CONFIG=no
1852 tmp_CPPFLAGS="$CPPFLAGS"
1853 tmp_CFLAGS="$CFLAGS"
1854 CPPFLAGS="$CPPFLAGS -x objective-c"
1855 CFLAGS="$CFLAGS -x objective-c"
1858 if test "${with_ns}" != no; then
1859 if test "${opsys}" = darwin; then
1861 ns_appdir=`pwd`/nextstep/Emacs.app
1862 ns_appbindir=${ns_appdir}/Contents/MacOS
1863 ns_appresdir=${ns_appdir}/Contents/Resources
1864 ns_appsrc=Cocoa/Emacs.base
1865 ns_fontfile=macfont.o
1866 elif flags=$( (gnustep-config --objc-flags) 2>/dev/null); then
1868 NS_GNUSTEP_CONFIG=yes
1869 GNU_OBJC_CFLAGS=$flags
1870 LIBS_GNUSTEP=$(gnustep-config --gui-libs) || exit
1871 elif test -f $GNUSTEP_CONFIG_FILE; then
1873 dnl FIXME sourcing this several times in subshells seems inefficient.
1874 GNUSTEP_SYSTEM_HEADERS=$(
1875 . $GNUSTEP_CONFIG_FILE
1876 AS_ECHO(["$GNUSTEP_SYSTEM_HEADERS"])
1878 GNUSTEP_SYSTEM_LIBRARIES=$(
1879 . $GNUSTEP_CONFIG_FILE
1880 AS_ECHO(["$GNUSTEP_SYSTEM_LIBRARIES"])
1882 dnl I seemed to need these as well with GNUstep-startup 0.25.
1883 GNUSTEP_LOCAL_HEADERS=$(
1884 . $GNUSTEP_CONFIG_FILE
1885 AS_ECHO(["$GNUSTEP_LOCAL_HEADERS"])
1887 GNUSTEP_LOCAL_LIBRARIES=$(
1888 . $GNUSTEP_CONFIG_FILE
1889 AS_ECHO(["$GNUSTEP_LOCAL_LIBRARIES"])
1891 test "x${GNUSTEP_LOCAL_HEADERS}" != "x" && \
1892 GNUSTEP_LOCAL_HEADERS="-I${GNUSTEP_LOCAL_HEADERS}"
1893 test "x${GNUSTEP_LOCAL_LIBRARIES}" != "x" && \
1894 GNUSTEP_LOCAL_LIBRARIES="-L${GNUSTEP_LOCAL_LIBRARIES}"
1895 CPPFLAGS="$CPPFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1896 CFLAGS="$CFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1897 LDFLAGS="$LDFLAGS -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES}"
1898 LIBS_GNUSTEP="-lgnustep-gui -lgnustep-base -lobjc -lpthread"
1899 dnl GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS to 0 or 1.
1900 dnl If they had chosen to either define it or not, we could have
1901 dnl just used AC_CHECK_DECL here.
1902 AC_CACHE_CHECK(if GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS,
1903 emacs_cv_objc_exceptions,
1904 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <GNUstepBase/GSConfig.h>]],
1905 [[#if defined BASE_NATIVE_OBJC_EXCEPTIONS && BASE_NATIVE_OBJC_EXCEPTIONS > 0
1909 #endif]])], emacs_cv_objc_exceptions=yes, emacs_cv_objc_exceptions=no ) )
1910 if test $emacs_cv_objc_exceptions = yes; then
1911 dnl _NATIVE_OBJC_EXCEPTIONS is used by the GNUstep headers.
1912 AC_DEFINE(_NATIVE_OBJC_EXCEPTIONS, 1,
1913 [Define if GNUstep uses ObjC exceptions.])
1914 GNU_OBJC_CFLAGS="-fobjc-exceptions"
1917 if test $NS_IMPL_GNUSTEP = yes; then
1918 ns_appdir=`pwd`/nextstep/Emacs.app
1919 ns_appbindir=${ns_appdir}
1920 ns_appresdir=${ns_appdir}/Resources
1921 ns_appsrc=GNUstep/Emacs.base
1922 ns_fontfile=nsfont.o
1925 dnl This is only used while we test the NS headers, it gets reset below.
1926 CPPFLAGS="$CPPFLAGS $GNU_OBJC_CFLAGS"
1927 CFLAGS="$CFLAGS $GNU_OBJC_CFLAGS"
1929 AC_CHECK_HEADER([AppKit/AppKit.h], [HAVE_NS=yes],
1930 [AC_MSG_ERROR([The include files (AppKit/AppKit.h etc) that
1931 are required for a Nextstep build are missing or cannot be compiled.
1932 Either fix this, or re-configure with the option '--without-ns'.])])
1935 if test "${NS_IMPL_COCOA}" = "yes"; then
1936 AC_MSG_CHECKING([for Mac OS X 10.6 or newer])
1937 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <AppKit/AppKit.h>],
1939 #ifdef MAC_OS_X_VERSION_MAX_ALLOWED
1940 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
1943 error "Mac OS X 10.6 or newer required";
1947 ns_osx_have_106=yes,
1949 AC_MSG_RESULT([$ns_osx_have_106])
1951 if test $ns_osx_have_106 = no; then
1952 AC_MSG_ERROR([Mac OS X 10.6 or newer is required]);
1957 AC_SUBST(LIBS_GNUSTEP)
1959 INSTALL_ARCH_INDEP_EXTRA=install-etc
1960 ns_self_contained=no
1963 if test "${HAVE_NS}" = yes; then
1964 if test "$with_toolkit_scroll_bars" = "no"; then
1965 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for Nextstep.])
1968 window_system=nextstep
1969 # set up packaging dirs
1970 if test "${EN_NS_SELF_CONTAINED}" = yes; then
1971 ns_self_contained=yes
1972 prefix=${ns_appresdir}
1973 exec_prefix=${ns_appbindir}
1974 dnl This one isn't really used, only archlibdir is.
1975 libexecdir="\${ns_appbindir}/libexec"
1976 archlibdir="\${ns_appbindir}/libexec"
1977 etcdocdir="\${ns_appresdir}/etc"
1978 etcdir="\${ns_appresdir}/etc"
1979 dnl FIXME maybe set datarootdir instead.
1980 dnl That would also get applications, icons, man.
1981 infodir="\${ns_appresdir}/info"
1982 mandir="\${ns_appresdir}/man"
1983 lispdir="\${ns_appresdir}/lisp"
1984 test "$locallisppathset" = no && locallisppath=""
1985 INSTALL_ARCH_INDEP_EXTRA=
1988 NS_OBJC_OBJ="nsterm.o nsfns.o nsmenu.o nsselect.o nsimage.o $ns_fontfile"
1990 CFLAGS="$tmp_CFLAGS"
1991 CPPFLAGS="$tmp_CPPFLAGS"
1992 AC_SUBST(INSTALL_ARCH_INDEP_EXTRA)
1993 AC_SUBST(ns_self_contained)
1995 AC_SUBST(NS_OBJC_OBJ)
1997 if test "${HAVE_NS}" = yes; then
1999 [if the Objective C compiler supports instancetype],
2000 [emacs_cv_objc_instancetype],
2001 [AC_LANG_PUSH([Objective C])
2003 [AC_LANG_SOURCE([[@interface Test
2004 + (instancetype)test;
2006 emacs_cv_objc_instancetype=yes,
2007 emacs_cv_objc_instancetype=no)
2008 AC_LANG_POP([Objective C])])
2010 if test x$emacs_cv_objc_instancetype = xyes ; then
2011 AC_DEFINE(NATIVE_OBJC_INSTANCETYPE, 1,
2012 [Define if ObjC compiler supports instancetype natively.])
2024 if test "${with_w32}" != no; then
2027 AC_CHECK_HEADER([windows.h], [HAVE_W32=yes],
2028 [AC_MSG_ERROR(['--with-w32' was specified, but windows.h
2029 cannot be found.])])
2032 ## Using --with-w32 with MinGW is a no-op, but we allow it.
2035 AC_MSG_ERROR([Using w32 with an autotools build is only supported for Cygwin and MinGW32.])
2040 if test "${opsys}" = "mingw32"; then
2041 AC_CACHE_CHECK([whether Windows API headers are recent enough], [emacs_cv_w32api],
2042 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2043 #include <windows.h>
2044 #include <usp10.h>]],
2045 [[PIMAGE_NT_HEADERS pHeader;
2046 PIMAGE_SECTION_HEADER pSection = IMAGE_FIRST_SECTION(pHeader)]])],
2047 [emacs_cv_w32api=yes], [emacs_cv_w32api=no])])
2048 if test "${emacs_cv_w32api}" = "no"; then
2049 AC_MSG_ERROR([the Windows API headers are too old to support this build.])
2051 HAVE_W32=${emacs_cv_w32api}
2061 if test "${HAVE_W32}" = "yes"; then
2062 AC_DEFINE(HAVE_NTGUI, 1, [Define to use native MS Windows GUI.])
2063 if test "$with_toolkit_scroll_bars" = "no"; then
2064 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for w32 build.])
2066 AC_CHECK_TOOL(WINDRES, [windres],
2067 [AC_MSG_ERROR([No resource compiler found.])])
2068 W32_OBJ="w32fns.o w32menu.o w32reg.o w32font.o w32term.o"
2069 W32_OBJ="$W32_OBJ w32xfns.o w32select.o w32uniscribe.o"
2070 EMACSRES="emacs.res"
2071 case "$canonical" in
2072 x86_64-*-*) EMACS_MANIFEST="emacs-x64.manifest" ;;
2073 *) EMACS_MANIFEST="emacs-x86.manifest" ;;
2075 dnl Construct something of the form "24,4,0,0" with 4 components.
2076 comma_version=`echo "${PACKAGE_VERSION}.0.0" | sed -e 's/\./,/g' -e 's/^\([[^,]]*,[[^,]]*,[[^,]]*,[[^,]]*\).*/\1/'`
2078 comma_space_version=`echo "$comma_version" | sed 's/,/, /g'`
2079 AC_SUBST(comma_version)
2080 AC_SUBST(comma_space_version)
2081 AC_CONFIG_FILES([nt/emacs.rc nt/emacsclient.rc])
2082 if test "${opsys}" = "cygwin"; then
2083 W32_LIBS="$W32_LIBS -lkernel32 -luser32 -lusp10 -lgdi32"
2084 W32_LIBS="$W32_LIBS -lole32 -lcomdlg32 -lcomctl32 -lwinspool"
2085 # Tell the linker that emacs.res is an object (which we compile from
2086 # the rc file), not a linker script.
2087 W32_RES_LINK="-Wl,emacs.res"
2089 W32_OBJ="$W32_OBJ w32.o w32console.o w32heap.o w32inevt.o w32proc.o"
2090 W32_LIBS="$W32_LIBS -lwinmm -lusp10 -lgdi32 -lcomdlg32"
2091 W32_LIBS="$W32_LIBS -lmpr -lwinspool -lole32 -lcomctl32"
2092 W32_RES_LINK="\$(EMACSRES)"
2093 CLIENTRES="emacsclient.res"
2094 CLIENTW="emacsclientw\$(EXEEXT)"
2095 FIRSTFILE_OBJ=firstfile.o
2098 LIBS_ECLIENT="-lcomctl32"
2099 LIB_WSOCK32="-lwsock32"
2100 NTLIB="ntlib.$ac_objext"
2101 XARGS_LIMIT="-s 10000"
2107 AC_SUBST(EMACS_MANIFEST)
2110 AC_SUBST(W32_RES_LINK)
2111 AC_SUBST(FIRSTFILE_OBJ)
2114 AC_SUBST(LIBS_ECLIENT)
2115 AC_SUBST(LIB_WSOCK32)
2117 AC_SUBST(XARGS_LIMIT)
2119 if test "${HAVE_W32}" = "yes"; then
2124 ## $window_system is now set to the window system we will
2132 case "${window_system}" in
2137 case "${with_x_toolkit}" in
2138 athena | lucid ) USE_X_TOOLKIT=LUCID ;;
2139 motif ) USE_X_TOOLKIT=MOTIF ;;
2141 term_header=gtkutil.h
2142 dnl Don't set this for GTK. A lot of tests below assumes Xt when
2143 dnl USE_X_TOOLKIT is set.
2144 USE_X_TOOLKIT=none ;;
2145 gtk2 ) with_gtk2=yes
2146 term_header=gtkutil.h
2147 USE_X_TOOLKIT=none ;;
2148 gtk3 ) with_gtk3=yes
2149 term_header=gtkutil.h
2150 USE_X_TOOLKIT=none ;;
2151 no ) USE_X_TOOLKIT=none ;;
2152 dnl If user did not say whether to use a toolkit, make this decision later:
2153 dnl use the toolkit if we have gtk, or X11R5 or newer.
2154 * ) USE_X_TOOLKIT=maybe ;;
2158 term_header=nsterm.h
2161 term_header=w32term.h
2165 if test "$window_system" = none && test "X$with_x" != "Xno"; then
2166 AC_CHECK_PROG(HAVE_XSERVER, X, true, false)
2167 if test "$HAVE_XSERVER" = true ||
2168 test -n "$DISPLAY" ||
2170 for emacs_libX11 in /usr/lib/libX11.*; do break; done
2171 test "$emacs_libX11" != '/usr/lib/libX11.*'
2174 AC_MSG_ERROR([You seem to be running X, but no X development libraries
2175 were found. You should install the relevant development files for X
2176 and for the toolkit you want, such as Gtk+ or Motif. Also make
2177 sure you have development files for image handling, i.e.
2178 tiff, gif, jpeg, png and xpm.
2179 If you are sure you want Emacs compiled without X window support, pass
2185 # Does the opsystem file prohibit the use of the GNU malloc?
2186 # Assume not, until told otherwise.
2190 [whether malloc is Doug Lea style],
2191 [emacs_cv_var_doug_lea_malloc],
2192 [emacs_cv_var_doug_lea_malloc=no
2193 dnl Hooks do not work with address sanitization.
2194 if test "$emacs_cv_sanitize_address" != yes; then
2197 [[#include <malloc.h>
2198 static void hook (void) {}]],
2199 [[malloc_set_state (malloc_get_state ());
2200 __after_morecore_hook = hook;
2201 __malloc_initialize_hook = hook;]])],
2202 [emacs_cv_var_doug_lea_malloc=yes])
2204 doug_lea_malloc=$emacs_cv_var_doug_lea_malloc
2209 test "$CANNOT_DUMP" = yes ||
2211 ## darwin ld insists on the use of malloc routines in the System framework.
2212 darwin | mingw32 | nacl | sol2-10) ;;
2213 cygwin) hybrid_malloc=yes
2215 *) test "$ac_cv_func_sbrk" = yes && system_malloc=$emacs_cv_sanitize_address;;
2218 if test "${system_malloc}" != yes && test "${doug_lea_malloc}" != yes \
2219 && test "${UNEXEC_OBJ}" = unexelf.o; then
2225 if test "${system_malloc}" = "yes"; then
2226 AC_DEFINE([SYSTEM_MALLOC], 1,
2227 [Define to 1 to use the system memory allocator, even if it is not
2231 (The GNU allocators don't work with this system configuration.)"
2233 elif test "$hybrid_malloc" = yes; then
2234 AC_DEFINE(HYBRID_MALLOC, 1,
2235 [Define to use gmalloc before dumping and the system malloc after.])
2238 GNU_MALLOC_reason=" (only before dumping)"
2239 GMALLOC_OBJ=gmalloc.o
2242 test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
2243 VMLIMIT_OBJ=vm-limit.o
2245 AC_CHECK_HEADERS([sys/vlimit.h])
2246 AC_CACHE_CHECK([for data_start], [emacs_cv_data_start],
2249 [[extern char data_start[]; char ch;]],
2250 [[return data_start < &ch;]])],
2251 [emacs_cv_data_start=yes],
2252 [emacs_cv_data_start=no])])
2253 if test $emacs_cv_data_start = yes; then
2254 AC_DEFINE([HAVE_DATA_START], 1,
2255 [Define to 1 if data_start is the address of the start
2256 of the main data segment.])
2259 AC_SUBST([HYBRID_MALLOC])
2260 AC_SUBST(GMALLOC_OBJ)
2261 AC_SUBST(VMLIMIT_OBJ)
2263 if test "$doug_lea_malloc" = "yes" && test "$hybrid_malloc" != yes; then
2264 if test "$GNU_MALLOC" = yes ; then
2266 (Using Doug Lea's new malloc from the GNU C Library.)"
2268 AC_DEFINE(DOUG_LEA_MALLOC, 1,
2269 [Define to 1 if the system memory allocator is Doug Lea style,
2270 with malloc hooks and malloc_set_state.])
2272 ## Use mmap directly for allocating larger buffers.
2273 ## FIXME this comes from src/s/{gnu,gnu-linux}.h:
2274 ## #ifdef DOUG_LEA_MALLOC; #undef REL_ALLOC; #endif
2275 ## Does the AC_FUNC_MMAP test below make this check unnecessary?
2277 mingw32|gnu*) REL_ALLOC=no ;;
2281 if test x"${REL_ALLOC}" = x; then
2282 REL_ALLOC=${GNU_MALLOC}
2285 use_mmap_for_buffers=no
2287 mingw32) use_mmap_for_buffers=yes ;;
2291 if test $use_mmap_for_buffers = yes; then
2292 AC_DEFINE(USE_MMAP_FOR_BUFFERS, 1, [Define to use mmap to allocate buffer text.])
2296 LIBS="$LIBS_SYSTEM $LIBS"
2298 dnl FIXME replace main with a function we actually want from this library.
2299 AC_CHECK_LIB(Xbsd, main, LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -lXbsd")
2301 dnl Check for the POSIX thread library.
2303 AC_CHECK_HEADERS_ONCE(pthread.h)
2304 if test "$ac_cv_header_pthread_h" && test "$opsys" != "mingw32"; then
2305 AC_CACHE_CHECK([for pthread library],
2306 [emacs_cv_pthread_lib],
2307 [emacs_cv_pthread_lib=no
2309 for emacs_pthread_lib in 'none needed' -lpthread; do
2310 case $emacs_pthread_lib in
2311 -*) LIBS="$OLD_LIBS $emacs_pthread_lib";;
2315 [[#include <pthread.h>
2317 sigset_t old_mask, new_mask;
2318 void noop (void) {}]],
2319 [[pthread_t th = pthread_self ();
2321 status += pthread_create (&th, 0, 0, 0);
2322 status += pthread_sigmask (SIG_BLOCK, &new_mask, &old_mask);
2323 status += pthread_kill (th, 0);
2324 #if ! (defined SYSTEM_MALLOC || defined HYBRID_MALLOC \
2325 || defined DOUG_LEA_MALLOC)
2326 /* Test for pthread_atfork only if gmalloc uses it,
2327 as older-style hosts like MirBSD 10 lack it. */
2328 status += pthread_atfork (noop, noop, noop);
2331 [emacs_cv_pthread_lib=$emacs_pthread_lib])
2333 if test "$emacs_cv_pthread_lib" != no; then
2337 if test "$emacs_cv_pthread_lib" != no; then
2338 AC_DEFINE([HAVE_PTHREAD], 1, [Define to 1 if you have POSIX threads.])
2339 case $emacs_cv_pthread_lib in
2340 -*) LIB_PTHREAD=$emacs_cv_pthread_lib;;
2342 ac_cv_func_pthread_sigmask=yes
2343 # Some systems optimize for single-threaded programs by default, and
2344 # need special flags to disable these optimizations. For example, the
2345 # definition of 'errno' in <errno.h>.
2348 AC_DEFINE([_REENTRANT], 1,
2349 [Define to 1 if your system requires this in multithreaded code.]);;
2351 AC_DEFINE([_THREAD_SAFE], 1,
2352 [Define to 1 if your system requires this in multithreaded code.]);;
2356 AC_SUBST([LIB_PTHREAD])
2358 AC_MSG_CHECKING([for thread support])
2360 if test "$with_threads" = yes; then
2361 if test "$emacs_cv_pthread_lib" != no; then
2362 AC_DEFINE(THREADS_ENABLED, 1,
2363 [Define to 1 if you want elisp thread support.])
2365 elif test "${opsys}" = "mingw32"; then
2366 dnl MinGW can do native Windows threads even without pthreads
2367 AC_DEFINE(THREADS_ENABLED, 1,
2368 [Define to 1 if you want elisp thread support.])
2372 AC_MSG_RESULT([$threads_enabled])
2374 dnl Check for need for bigtoc support on IBM AIX
2378 AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
2380 yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
2381 *) gdb_cv_bigtoc=-bbigtoc ;;
2384 LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
2385 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[int i;]])], [], [gdb_cv_bigtoc=])
2390 # Change CFLAGS, CPPFLAGS, and LIBS temporarily so that C_SWITCH_X_SITE
2391 # is for the tests that follow. We set them back later on.
2393 REAL_CFLAGS="$CFLAGS"
2394 REAL_CPPFLAGS="$CPPFLAGS"
2397 if test "${HAVE_X11}" = "yes"; then
2398 DEFS="$C_SWITCH_X_SITE $DEFS"
2399 LDFLAGS="$LDFLAGS $LD_SWITCH_X_SITE"
2401 CFLAGS="$C_SWITCH_X_SITE $CFLAGS"
2402 CPPFLAGS="$C_SWITCH_X_SITE $CPPFLAGS"
2404 # On Solaris, arrange for LD_RUN_PATH to point to the X libraries for tests.
2405 # This is handled by LD_SWITCH_X_SITE_RPATH during the real build,
2406 # but it's more convenient here to set LD_RUN_PATH since this
2407 # also works on hosts that don't understand LD_SWITCH_X_SITE_RPATH.
2408 if test "${x_libraries}" != NONE && test -n "${x_libraries}"; then
2409 LD_RUN_PATH=$x_libraries${LD_RUN_PATH+:}$LD_RUN_PATH
2413 if test "${opsys}" = "gnu-linux"; then
2414 AC_CACHE_CHECK([whether X on GNU/Linux needs -b to link], [emacs_cv_b_link],
2415 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2416 [[XOpenDisplay ("foo");]])],
2417 [xgnu_linux_first_failure=no],
2418 [xgnu_linux_first_failure=yes])
2419 if test "${xgnu_linux_first_failure}" = "yes"; then
2420 OLD_CPPFLAGS="$CPPFLAGS"
2422 CPPFLAGS="$CPPFLAGS -b i486-linuxaout"
2423 LIBS="$LIBS -b i486-linuxaout"
2424 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2425 [[XOpenDisplay ("foo");]])],
2426 [xgnu_linux_second_failure=no],
2427 [xgnu_linux_second_failure=yes])
2428 if test "${xgnu_linux_second_failure}" = "yes"; then
2429 # If we get the same failure with -b, there is no use adding -b.
2430 # So leave it out. This plays safe.
2435 CPPFLAGS=$OLD_CPPFLAGS
2440 if test "x$emacs_cv_b_link" = xyes ; then
2441 LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -b i486-linuxaout"
2442 C_SWITCH_X_SITE="$C_SWITCH_X_SITE -b i486-linuxaout"
2446 # Reportedly, some broken Solaris systems have XKBlib.h but are missing
2447 # header files included from there.
2448 AC_CACHE_CHECK([for Xkb], [emacs_cv_xkb],
2449 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>
2450 #include <X11/XKBlib.h>]],
2451 [[XkbDescPtr kb = XkbGetKeyboard (0, XkbAllComponentsMask, XkbUseCoreKbd);]])],
2452 emacs_cv_xkb=yes, emacs_cv_xkb=no)])
2453 if test $emacs_cv_xkb = yes; then
2454 AC_DEFINE(HAVE_XKB, 1, [Define to 1 if you have the Xkb extension.])
2457 AC_CHECK_FUNCS(XrmSetDatabase XScreenResourceString \
2458 XScreenNumberOfScreen)
2461 if test "${window_system}" = "x11"; then
2462 AC_MSG_CHECKING(X11 version 6)
2463 AC_CACHE_VAL(emacs_cv_x11_version_6,
2464 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]],
2465 [[#if XlibSpecificationRelease < 6
2468 ]])], emacs_cv_x11_version_6=yes, emacs_cv_x11_version_6=no)])
2469 if test $emacs_cv_x11_version_6 = yes; then
2470 AC_MSG_RESULT(6 or newer)
2471 AC_DEFINE(HAVE_X11R6, 1,
2472 [Define to 1 if you have the X11R6 or newer version of Xlib.])
2473 AC_DEFINE(HAVE_X_I18N, 1, [Define if you have usable i18n support.])
2474 ## inoue@ainet.or.jp says Solaris has a bug related to X11R6-style
2478 *) AC_DEFINE(HAVE_X11R6_XIM, 1,
2479 [Define if you have usable X11R6-style XIM support.])
2483 AC_MSG_RESULT(before 6)
2488 ### Use -lrsvg-2 if available, unless '--with-rsvg=no' is specified.
2490 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${opsys}" = "mingw32"; then
2491 if test "${with_rsvg}" != "no"; then
2492 RSVG_REQUIRED=2.11.0
2493 RSVG_MODULE="librsvg-2.0 >= $RSVG_REQUIRED"
2495 EMACS_CHECK_MODULES([RSVG], [$RSVG_MODULE])
2496 AC_SUBST(RSVG_CFLAGS)
2499 if test $HAVE_RSVG = yes; then
2500 AC_DEFINE(HAVE_RSVG, 1, [Define to 1 if using librsvg.])
2501 CFLAGS="$CFLAGS $RSVG_CFLAGS"
2502 # Windows loads librsvg dynamically
2503 if test "${opsys}" = "mingw32"; then
2511 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${HAVE_W32}" = "yes"; then
2512 if test "${with_imagemagick}" != "no"; then
2513 ## 6.3.5 is the earliest version known to work; see Bug#17339.
2514 ## 6.8.2 makes Emacs crash; see Bug#13867.
2515 ## 7 and later have not been ported to; See Bug#25967.
2516 IMAGEMAGICK_MODULE="Wand >= 6.3.5 Wand != 6.8.2 Wand < 7"
2517 EMACS_CHECK_MODULES([IMAGEMAGICK], [$IMAGEMAGICK_MODULE])
2519 if test $HAVE_IMAGEMAGICK = yes; then
2522 CFLAGS="$CFLAGS $IMAGEMAGICK_CFLAGS"
2523 LIBS="$IMAGEMAGICK_LIBS $LIBS"
2524 AC_CHECK_FUNCS([MagickRelinquishMemory MagickExportImagePixels \
2525 MagickMergeImageLayers MagickAutoOrientImage])
2528 # Check that ImageMagick links. It does not link on Fedora 25
2529 # with './configure CC=clang', as pkg-config outputs flags like
2530 # -lomp that work for GCC but not Clang.
2531 if test "$ac_cv_func_MagickRelinquishMemory" != yes; then
2535 if test $HAVE_IMAGEMAGICK = yes; then
2536 AC_DEFINE([HAVE_IMAGEMAGICK], 1, [Define to 1 if using ImageMagick.])
2541 AC_SUBST([IMAGEMAGICK_CFLAGS])
2542 AC_SUBST([IMAGEMAGICK_LIBS])
2546 AC_CHECK_LIB(anl, getaddrinfo_a, HAVE_GETADDRINFO_A=yes)
2547 if test "${HAVE_GETADDRINFO_A}" = "yes"; then
2548 AC_DEFINE(HAVE_GETADDRINFO_A, 1,
2549 [Define to 1 if you have getaddrinfo_a for asynchronous DNS resolution.])
2550 GETADDRINFO_A_LIBS="-lanl"
2551 AC_SUBST(GETADDRINFO_A_LIBS)
2556 gtk_term_header=$term_header
2559 if test "${opsys}" != "mingw32"; then
2560 if test "${with_gtk3}" = "yes" || test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
2563 GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2565 dnl Checks for libraries.
2566 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2567 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2568 if test "$pkg_check_gtk" = "no" && test "$with_gtk3" = "yes"; then
2569 AC_MSG_ERROR($GTK_PKG_ERRORS)
2571 if test "$pkg_check_gtk" = "yes"; then
2572 AC_DEFINE(HAVE_GTK3, 1, [Define to 1 if using GTK 3 or later.])
2573 GTK_OBJ=emacsgtkfixed.o
2574 gtk_term_header=gtkutil.h
2575 USE_GTK_TOOLKIT="GTK3"
2576 if test "x$ac_enable_gtk_deprecation_warnings" = x; then
2577 AC_DEFINE([GDK_DISABLE_DEPRECATION_WARNINGS], [1],
2578 [Define to 1 to disable GTK+/GDK deprecation warnings.])
2579 AC_DEFINE([GLIB_DISABLE_DEPRECATION_WARNINGS], [1],
2580 [Define to 1 to disable Glib deprecation warnings.])
2584 gtk3_pkg_errors="$GTK_PKG_ERRORS "
2588 if test "${with_gtk2}" = "yes" || test "$check_gtk2" = "yes"; then
2591 GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2593 dnl Checks for libraries.
2594 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2595 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2596 if test "$pkg_check_gtk" = "no" &&
2597 { test "$with_gtk" = yes || test "$with_gtk2" = "yes"; }
2599 AC_MSG_ERROR($gtk3_pkg_errors$GTK_PKG_ERRORS)
2601 test "$pkg_check_gtk" = "yes" && USE_GTK_TOOLKIT="GTK2"
2608 if test x"$pkg_check_gtk" = xyes; then
2611 CFLAGS="$CFLAGS $GTK_CFLAGS"
2612 LIBS="$GTK_LIBS $LIBS"
2613 dnl Try to compile a simple GTK program.
2614 AC_CACHE_CHECK([whether GTK compiles], [emacs_cv_gtk_compiles],
2617 [[/* Check the Gtk and Glib APIs. */
2618 #include <gtk/gtk.h>
2619 #include <glib-object.h>
2621 callback (GObject *go, GParamSpec *spec, gpointer user_data)
2625 GtkSettings *gs = 0;
2626 /* Use G_CALLBACK to make sure function pointers can be cast to void *;
2627 strict C prohibits this. Use gtk_main_iteration to test that the
2628 libraries are there. */
2629 if (g_signal_handler_find (G_OBJECT (gs), G_SIGNAL_MATCH_FUNC,
2630 0, 0, 0, G_CALLBACK (callback), 0))
2631 gtk_main_iteration ();
2633 [emacs_cv_gtk_compiles=yes], [emacs_cv_gtk_compiles=no])])
2634 if test "${emacs_cv_gtk_compiles}" != "yes"; then
2636 if test "$USE_X_TOOLKIT" != "maybe"; then
2637 AC_MSG_ERROR([Gtk+ wanted, but it does not compile, see config.log. Maybe some x11-devel files missing?]);
2640 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $GTK_CFLAGS"
2642 AC_DEFINE(USE_GTK, 1, [Define to 1 if using GTK.])
2643 GTK_OBJ="gtkutil.o $GTK_OBJ"
2644 term_header=$gtk_term_header
2646 AC_MSG_WARN([[Your version of Gtk+ will have problems with
2647 closing open displays. This is no problem if you just use
2648 one display, but if you use more than one and close one of them
2650 See https://bugzilla.gnome.org/show_bug.cgi?id=85715]])
2657 if test "${HAVE_GTK}" = "yes"; then
2659 dnl GTK scrollbars resemble toolkit scrollbars a lot, so to avoid
2660 dnl a lot if #ifdef:s, say we have toolkit scrollbars.
2661 if test "$with_toolkit_scroll_bars" != no; then
2662 with_toolkit_scroll_bars=yes
2665 dnl Check if we have the old file selection dialog declared and
2666 dnl in the link library. In 2.x it may be in the library,
2667 dnl but not declared if deprecated featured has been selected out.
2668 dnl AC_CHECK_DECL checks for a macro, so check for GTK_TYPE_FILE_SELECTION.
2669 HAVE_GTK_FILE_SELECTION=no
2670 AC_CHECK_DECL(GTK_TYPE_FILE_SELECTION, HAVE_GTK_FILE_SELECTION=yes,
2671 HAVE_GTK_FILE_SELECTION=no, [AC_INCLUDES_DEFAULT
2672 #include <gtk/gtk.h>])
2673 if test "$HAVE_GTK_FILE_SELECTION" = yes; then
2674 AC_CHECK_FUNCS(gtk_file_selection_new)
2677 dnl Same as above for gtk_handle_box.
2678 HAVE_GTK_HANDLE_BOX=no
2679 AC_CHECK_DECL(GTK_TYPE_HANDLE_BOX, HAVE_GTK_HANDLE_BOX=yes,
2680 HAVE_GTK_HANDLE_BOX=no, [AC_INCLUDES_DEFAULT
2681 #include <gtk/gtk.h>])
2682 if test "$HAVE_GTK_HANDLE_BOX" = yes; then
2683 AC_CHECK_FUNCS(gtk_handle_box_new)
2686 dnl Same as above for gtk_tearoff_menu_item.
2687 HAVE_GTK_TEAROFF_MENU_ITEM=no
2688 AC_CHECK_DECL(GTK_TYPE_TEAROFF_MENU_ITEM, HAVE_GTK_TEAROFF_MENU_ITEM=yes,
2689 HAVE_GTK_TEAROFF_MENU_ITEM=no, [AC_INCLUDES_DEFAULT
2690 #include <gtk/gtk.h>])
2691 if test "$HAVE_GTK_TEAROFF_MENU_ITEM" = yes; then
2692 AC_CHECK_FUNCS(gtk_tearoff_menu_item_new)
2695 dnl Check for functions introduced in 2.14 and later.
2696 AC_CHECK_FUNCS(gtk_widget_get_window gtk_widget_set_has_window \
2697 gtk_dialog_get_action_area gtk_widget_get_sensitive \
2698 gtk_widget_get_mapped gtk_adjustment_get_page_size \
2699 gtk_orientable_set_orientation \
2700 gtk_window_set_has_resize_grip)
2702 term_header=gtkutil.h
2706 dnl Enable xwidgets if GTK3 and WebKitGTK+ are available.
2709 if test "$with_xwidgets" != "no"; then
2710 test "$USE_GTK_TOOLKIT" = "GTK3" && test "$window_system" != "none" ||
2711 AC_MSG_ERROR([xwidgets requested but gtk3 not used.])
2713 WEBKIT_REQUIRED=2.12
2714 WEBKIT_MODULES="webkit2gtk-4.0 >= $WEBKIT_REQUIRED"
2715 EMACS_CHECK_MODULES([WEBKIT], [$WEBKIT_MODULES])
2716 HAVE_XWIDGETS=$HAVE_WEBKIT
2717 test $HAVE_XWIDGETS = yes ||
2718 AC_MSG_ERROR([xwidgets requested but WebKitGTK+ not found.])
2720 XWIDGETS_OBJ=xwidget.o
2721 AC_DEFINE([HAVE_XWIDGETS], 1, [Define to 1 if you have xwidgets support.])
2723 AC_SUBST(XWIDGETS_OBJ)
2728 dnl D-Bus has been tested under GNU/Linux only. Must be adapted for
2729 dnl other platforms.
2732 if test "${with_dbus}" = "yes"; then
2733 EMACS_CHECK_MODULES([DBUS], [dbus-1 >= 1.0])
2734 if test "$HAVE_DBUS" = yes; then
2735 AC_DEFINE(HAVE_DBUS, 1, [Define to 1 if using D-Bus.])
2736 dnl dbus_watch_get_unix_fd has been introduced in D-Bus 1.1.1.
2737 dnl dbus_type_is_valid and dbus_validate_* have been introduced in
2740 LIBS="$LIBS $DBUS_LIBS"
2741 AC_CHECK_FUNCS(dbus_watch_get_unix_fd \
2742 dbus_type_is_valid \
2743 dbus_validate_bus_name \
2744 dbus_validate_path \
2745 dbus_validate_interface \
2746 dbus_validate_member)
2751 AC_SUBST(DBUS_CFLAGS)
2755 dnl GSettings has been tested under GNU/Linux only.
2757 if test "${HAVE_X11}" = "yes" && test "${with_gsettings}" = "yes"; then
2758 EMACS_CHECK_MODULES([GSETTINGS], [gio-2.0 >= 2.26])
2759 if test "$HAVE_GSETTINGS" = "yes"; then
2761 CFLAGS="$CFLAGS $GSETTINGS_CFLAGS"
2763 LIBS="$LIBS $GSETTINGS_LIBS"
2764 AC_CACHE_CHECK([whether GSettings is in gio], [emacs_cv_gsettings_in_gio],
2767 [[/* Check that gsettings really is present. */
2768 #include <glib-object.h>
2769 #include <gio/gio.h>
2772 GSettings *settings;
2773 GVariant *val = g_settings_get_value (settings, "");
2775 [emacs_cv_gsettings_in_gio=yes], [emacs_cv_gsettings_in_gio=no])])
2777 if test "$emacs_cv_gsettings_in_gio" = "yes"; then
2778 AC_DEFINE(HAVE_GSETTINGS, 1, [Define to 1 if using GSettings.])
2779 SETTINGS_CFLAGS="$GSETTINGS_CFLAGS"
2780 SETTINGS_LIBS="$GSETTINGS_LIBS"
2781 test "$with_gconf" = "yes" || with_gconf=no
2788 dnl GConf has been tested under GNU/Linux only.
2789 dnl The version is really arbitrary, it is about the same age as Gtk+ 2.6.
2791 if test "${HAVE_X11}" = "yes" && test "${with_gconf}" != "no"; then
2792 EMACS_CHECK_MODULES([GCONF], [gconf-2.0 >= 2.13])
2793 if test "$HAVE_GCONF" = yes; then
2794 AC_DEFINE(HAVE_GCONF, 1, [Define to 1 if using GConf.])
2795 dnl Newer GConf doesn't link with g_objects, so this is not defined.
2796 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GCONF_CFLAGS"
2797 SETTINGS_LIBS="$SETTINGS_LIBS $GCONF_LIBS"
2801 if test "$HAVE_GSETTINGS" = "yes" || test "$HAVE_GCONF" = "yes"; then
2802 EMACS_CHECK_MODULES([GOBJECT], [gobject-2.0 >= 2.0])
2803 if test "$HAVE_GOBJECT" = "yes"; then
2804 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GOBJECT_CFLAGS"
2805 SETTINGS_LIBS="$SETTINGS_LIBS $GOBJECT_LIBS"
2807 SAVE_CFLAGS="$CFLAGS"
2809 CFLAGS="$SETTINGS_CFLAGS $CFLAGS"
2810 LIBS="$SETTINGS_LIBS $LIBS"
2811 CFLAGS="$SAVE_CFLAGS"
2814 AC_SUBST(SETTINGS_CFLAGS)
2815 AC_SUBST(SETTINGS_LIBS)
2818 dnl SELinux is available for GNU/Linux only.
2821 if test "${with_selinux}" = "yes"; then
2822 AC_CHECK_LIB([selinux], [lgetfilecon], HAVE_LIBSELINUX=yes, HAVE_LIBSELINUX=no)
2823 if test "$HAVE_LIBSELINUX" = yes; then
2824 AC_DEFINE(HAVE_LIBSELINUX, 1, [Define to 1 if using SELinux.])
2825 LIBSELINUX_LIBS=-lselinux
2828 AC_SUBST(LIBSELINUX_LIBS)
2831 if test "${with_gnutls}" = "yes" ; then
2832 EMACS_CHECK_MODULES([LIBGNUTLS], [gnutls >= 2.12.2],
2833 [HAVE_GNUTLS=yes], [HAVE_GNUTLS=no])
2834 if test "${HAVE_GNUTLS}" = "yes"; then
2835 AC_DEFINE(HAVE_GNUTLS, 1, [Define if using GnuTLS.])
2838 # Windows loads GnuTLS dynamically
2839 if test "${opsys}" = "mingw32"; then
2844 AC_SUBST(LIBGNUTLS_LIBS)
2845 AC_SUBST(LIBGNUTLS_CFLAGS)
2848 if test "${with_libsystemd}" = "yes" ; then
2849 dnl This code has been tested with libsystemd 222 and later.
2850 dnl FIXME: Find the earliest version number for which Emacs should work,
2851 dnl and change '222' to that number.
2852 EMACS_CHECK_MODULES([LIBSYSTEMD], [libsystemd >= 222],
2853 [HAVE_LIBSYSTEMD=yes], [HAVE_LIBSYSTEMD=no])
2854 if test "${HAVE_LIBSYSTEMD}" = "yes"; then
2855 AC_DEFINE(HAVE_LIBSYSTEMD, 1, [Define if using libsystemd.])
2859 AC_SUBST(LIBSYSTEMD_LIBS)
2860 AC_SUBST(LIBSYSTEMD_CFLAGS)
2865 dnl MS Windows native file monitor is available for mingw32 only.
2866 case $with_file_notification,$opsys in
2868 AC_MSG_ERROR(['--with-file-notification=w32' was specified, but
2869 this is only supported on MS-Windows native and MinGW32 builds.
2870 Consider using gfile instead.])
2872 w32,* | yes,mingw32)
2873 AC_CHECK_HEADER(windows.h)
2874 if test "$ac_cv_header_windows_h" = yes ; then
2875 AC_DEFINE(HAVE_W32NOTIFY, 1, [Define to 1 to use w32notify.])
2876 NOTIFY_OBJ=w32notify.o
2877 NOTIFY_SUMMARY="yes (w32)"
2881 dnl inotify is available only on GNU/Linux.
2882 case $with_file_notification,$NOTIFY_OBJ in
2884 AC_CHECK_HEADER(sys/inotify.h)
2885 if test "$ac_cv_header_sys_inotify_h" = yes ; then
2886 AC_CHECK_FUNC(inotify_init1)
2887 if test "$ac_cv_func_inotify_init1" = yes; then
2888 AC_DEFINE(HAVE_INOTIFY, 1, [Define to 1 to use inotify.])
2889 NOTIFY_OBJ=inotify.o
2890 NOTIFY_SUMMARY="yes -lglibc (inotify)"
2895 dnl kqueue is available on BSD-like systems.
2896 case $with_file_notification,$NOTIFY_OBJ in
2898 EMACS_CHECK_MODULES([KQUEUE], [libkqueue])
2899 if test "$HAVE_KQUEUE" = "yes"; then
2900 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2901 CPPFLAGS="$CPPFLAGS -I/usr/include/kqueue"
2902 NOTIFY_CFLAGS=$KQUEUE_CFLAGS
2903 NOTIFY_LIBS=$KQUEUE_LIBS
2905 NOTIFY_SUMMARY="yes -lkqueue"
2907 AC_SEARCH_LIBS(kqueue, [])
2908 if test "$ac_cv_search_kqueue" != no; then
2909 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2911 NOTIFY_SUMMARY="yes (kqueue)"
2916 dnl g_file_monitor exists since glib 2.18. G_FILE_MONITOR_EVENT_MOVED
2917 dnl has been added in glib 2.24. It has been tested under
2919 case $with_file_notification,$NOTIFY_OBJ in
2921 if test "${HAVE_NS}" = yes; then
2922 AC_MSG_ERROR(['--with-file-notification=gfile' is not supported in NextStep builds.
2923 Consider kqueue instead.])
2925 EMACS_CHECK_MODULES([GFILENOTIFY], [gio-2.0 >= 2.24])
2926 if test "$HAVE_GFILENOTIFY" = "yes"; then
2927 AC_DEFINE(HAVE_GFILENOTIFY, 1, [Define to 1 if using GFile.])
2928 NOTIFY_CFLAGS=$GFILENOTIFY_CFLAGS
2929 NOTIFY_LIBS=$GFILENOTIFY_LIBS
2930 NOTIFY_OBJ=gfilenotify.o
2931 NOTIFY_SUMMARY="yes -lgio (gfile)"
2936 case $with_file_notification,$NOTIFY_OBJ in
2937 yes,* | no,* | *,?*) ;;
2938 *) AC_MSG_ERROR([File notification '$with_file_notification' requested but requirements not found.]) ;;
2941 if test -n "$NOTIFY_OBJ"; then
2942 AC_DEFINE(USE_FILE_NOTIFY, 1, [Define to 1 if using file notifications.])
2944 AC_SUBST(NOTIFY_CFLAGS)
2945 AC_SUBST(NOTIFY_LIBS)
2946 AC_SUBST(NOTIFY_OBJ)
2948 dnl Do not put whitespace before the #include statements below.
2949 dnl Older compilers (eg sunos4 cc) choke on it.
2952 if test x"${USE_X_TOOLKIT}" = xmaybe || test x"${USE_X_TOOLKIT}" = xLUCID; then
2953 if test "$with_xaw3d" != no; then
2954 AC_CACHE_VAL(emacs_cv_xaw3d,
2955 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
2956 #include <X11/Intrinsic.h>
2957 #include <X11/Xaw3d/Simple.h>]],
2959 [AC_CHECK_LIB(Xaw3d, XawScrollbarSetThumb,
2960 emacs_cv_xaw3d=yes, emacs_cv_xaw3d=no)],
2961 emacs_cv_xaw3d=no)])
2965 if test $emacs_cv_xaw3d = yes; then
2966 AC_MSG_CHECKING(for xaw3d)
2967 AC_MSG_RESULT([yes; using Lucid toolkit])
2971 AC_DEFINE(HAVE_XAW3D, 1,
2972 [Define to 1 if you have the Xaw3d library (-lXaw3d).])
2974 AC_MSG_CHECKING(for xaw3d)
2976 AC_MSG_CHECKING(for libXaw)
2977 AC_CACHE_VAL(emacs_cv_xaw,
2978 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
2979 #include <X11/Intrinsic.h>
2980 #include <X11/Xaw/Simple.h>]],
2984 if test $emacs_cv_xaw = yes; then
2985 AC_MSG_RESULT([yes; using Lucid toolkit])
2988 elif test x"${USE_X_TOOLKIT}" = xLUCID; then
2989 AC_MSG_ERROR([Lucid toolkit requires X11/Xaw include files])
2991 AC_MSG_ERROR([No X toolkit could be found.
2992 If you are sure you want Emacs compiled without an X toolkit, pass
2994 to configure. Otherwise, install the development libraries for the toolkit
2995 that you want to use (e.g. Gtk+) and re-run configure.])
3000 X_TOOLKIT_TYPE=$USE_X_TOOLKIT
3004 if test "${USE_X_TOOLKIT}" != "none"; then
3005 AC_MSG_CHECKING(X11 toolkit version)
3006 AC_CACHE_VAL(emacs_cv_x11_toolkit_version_6,
3007 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Intrinsic.h>]],
3008 [[#if XtSpecificationRelease < 6
3011 ]])], emacs_cv_x11_toolkit_version_6=yes, emacs_cv_x11_toolkit_version_6=no)])
3012 HAVE_X11XTR6=$emacs_cv_x11_toolkit_version_6
3013 if test $emacs_cv_x11_toolkit_version_6 = yes; then
3014 AC_MSG_RESULT(6 or newer)
3015 AC_DEFINE(HAVE_X11XTR6, 1,
3016 [Define to 1 if you have the X11R6 or newer version of Xt.])
3017 LIBXTR6="-lSM -lICE"
3019 ## Use libw.a along with X11R6 Xt.
3020 unixware) LIBXTR6="$LIBXTR6 -lw" ;;
3023 AC_MSG_RESULT(before 6)
3026 dnl If using toolkit, check whether libXmu.a exists.
3027 dnl tranle@intellicorp.com says libXmu.a can need XtMalloc in libXt.a to link.
3029 if test x$HAVE_X11XTR6 = xyes; then
3030 OTHERLIBS='-lXt -lSM -lICE'
3034 AC_SEARCH_LIBS([XmuConvertStandardSelection], [Xmu], [], [], [$OTHERLIBS])
3035 if test "X$LIBS" != "X$OLDLIBS"; then
3036 LIBXMU=$ac_cv_search_XmuConvertStandardSelection
3039 dnl ac_cv_search_XmuConvertStandardSelection is also referenced below.
3045 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3046 # OpenMotif may be installed in such a way on some GNU/Linux systems.
3047 if test -d /usr/include/openmotif; then
3048 CPPFLAGS="-I/usr/include/openmotif $CPPFLAGS"
3049 emacs_cv_openmotif=yes
3050 case "$canonical" in
3051 x86_64-*-linux-gnu* | powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*)
3052 test -d /usr/lib64/openmotif && LDFLAGS="-L/usr/lib64/openmotif $LDFLAGS"
3055 test -d /usr/lib/openmotif && LDFLAGS="-L/usr/lib/openmotif $LDFLAGS"
3058 emacs_cv_openmotif=no
3060 AC_CACHE_CHECK(for (Open)Motif version 2.1, emacs_cv_motif_version_2_1,
3061 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <Xm/Xm.h>]],
3062 [[#if XmVERSION > 2 || (XmVERSION == 2 && XmREVISION >= 1)
3065 Motif version prior to 2.1.
3067 emacs_cv_motif_version_2_1=yes, emacs_cv_motif_version_2_1=no)])
3068 if test $emacs_cv_motif_version_2_1 = yes; then
3069 AC_CHECK_LIB(Xp, XpCreateContext, LIBXP=-lXp)
3070 if test x$emacs_cv_openmotif = xyes; then
3071 REAL_CPPFLAGS="-I/usr/include/openmotif $REAL_CPPFLAGS"
3074 AC_CACHE_CHECK(for LessTif where some systems put it, emacs_cv_lesstif,
3075 # We put this in CFLAGS temporarily to precede other -I options
3076 # that might be in CFLAGS temporarily.
3077 # We put this in CPPFLAGS where it precedes the other -I options.
3078 OLD_CPPFLAGS=$CPPFLAGS
3080 CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CPPFLAGS"
3081 CFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CFLAGS"
3082 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include </usr/X11R6/LessTif/Motif1.2/include/Xm/Xm.h>]],
3084 emacs_cv_lesstif=yes, emacs_cv_lesstif=no)])
3085 if test $emacs_cv_lesstif = yes; then
3086 # Make sure this -I option remains in CPPFLAGS after it is set
3087 # back to REAL_CPPFLAGS.
3088 # There is no need to change REAL_CFLAGS, because REAL_CFLAGS does not
3089 # have those other -I options anyway. Ultimately, having this
3090 # directory ultimately in CPPFLAGS will be enough.
3091 REAL_CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $REAL_CPPFLAGS"
3092 LDFLAGS="-L/usr/X11R6/LessTif/Motif1.2/lib $LDFLAGS"
3095 CPPFLAGS=$OLD_CPPFLAGS
3098 AC_CHECK_HEADER([Xm/BulletinB.h], [],
3099 [AC_MSG_ERROR([Motif toolkit requested but requirements not found.])])
3102 dnl Use toolkit scroll bars if configured for GTK or X toolkit and either
3103 dnl using Motif or Xaw3d is available, and unless
3104 dnl --with-toolkit-scroll-bars=no was specified.
3106 AH_TEMPLATE(USE_TOOLKIT_SCROLL_BARS,
3107 [Define to 1 if we should use toolkit scroll bars.])dnl
3108 USE_TOOLKIT_SCROLL_BARS=no
3109 if test "${with_toolkit_scroll_bars}" != "no"; then
3110 if test "${USE_X_TOOLKIT}" != "none"; then
3111 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3112 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3114 USE_TOOLKIT_SCROLL_BARS=yes
3115 elif test "${HAVE_XAW3D}" = "yes" || test "${USE_X_TOOLKIT}" = "LUCID"; then
3116 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3117 USE_TOOLKIT_SCROLL_BARS=yes
3119 elif test "${HAVE_GTK}" = "yes"; then
3120 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3121 USE_TOOLKIT_SCROLL_BARS=yes
3122 elif test "${HAVE_NS}" = "yes"; then
3123 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3124 USE_TOOLKIT_SCROLL_BARS=yes
3125 elif test "${HAVE_W32}" = "yes"; then
3126 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3127 USE_TOOLKIT_SCROLL_BARS=yes
3131 dnl See if XIM is available.
3132 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3133 #include <X11/Xlib.h>
3134 #include <X11/Xresource.h>]],
3135 [[XIMProc callback;]])],
3137 AC_DEFINE(HAVE_XIM, 1, [Define to 1 if XIM is available])],
3140 dnl '--with-xim' now controls only the initial value of use_xim at run time.
3142 if test "${with_xim}" != "no"; then
3143 AC_DEFINE(USE_XIM, 1,
3144 [Define to 1 if we should use XIM, if it is available.])
3148 if test "${HAVE_XIM}" != "no"; then
3150 if test "$GCC" = yes; then
3151 CFLAGS="$CFLAGS --pedantic-errors"
3153 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3154 #include <X11/Xlib.h>
3155 #include <X11/Xresource.h>]],
3161 XPointer *client_data;
3163 /* If we're not using GCC, it's probably not XFree86, and this is
3164 probably right, but we can't use something like --pedantic-errors. */
3165 extern Bool XRegisterIMInstantiateCallback(Display*, XrmDatabase, char*,
3166 char*, XIMProc, XPointer*);
3168 (void)XRegisterIMInstantiateCallback(display, db, res_name, res_class, callback,
3170 [emacs_cv_arg6_star=yes])
3171 AH_TEMPLATE(XRegisterIMInstantiateCallback_arg6,
3172 [Define to the type of the 6th arg of XRegisterIMInstantiateCallback,
3173 either XPointer or XPointer*.])dnl
3174 if test "$emacs_cv_arg6_star" = yes; then
3175 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer*])
3177 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer])
3182 ### Start of font-backend (under any platform) section.
3183 # (nothing here yet -- this is a placeholder)
3184 ### End of font-backend (under any platform) section.
3186 ### Start of font-backend (under X11) section.
3187 if test "${HAVE_X11}" = "yes"; then
3188 ## Use -lXft if available, unless '--with-xft=no'.
3190 if test "x${with_x}" = "xno"; then
3194 if test "$with_xft" != no; then
3195 EMACS_CHECK_MODULES([FONTCONFIG], [fontconfig >= 2.2.0])
3196 with_xft=$HAVE_FONTCONFIG
3199 if test "x${with_xft}" != "xno"; then
3201 EMACS_CHECK_MODULES([XFT], [xft >= 0.13.0], [], [HAVE_XFT=no])
3202 ## Because xftfont.c uses XRenderQueryExtension, we also
3203 ## need to link to -lXrender.
3205 AC_CHECK_LIB(Xrender, XRenderQueryExtension, HAVE_XRENDER=yes)
3206 if test "$HAVE_XFT" != no && test "$HAVE_XRENDER" != no; then
3207 OLD_CPPFLAGS="$CPPFLAGS"
3208 OLD_CFLAGS="$CFLAGS"
3210 CPPFLAGS="$CPPFLAGS $XFT_CFLAGS"
3211 CFLAGS="$CFLAGS $XFT_CFLAGS"
3212 XFT_LIBS="-lXrender $XFT_LIBS"
3213 LIBS="$XFT_LIBS $LIBS"
3214 AC_CHECK_HEADER(X11/Xft/Xft.h,
3215 AC_CHECK_LIB(Xft, XftFontOpen, HAVE_XFT=yes, , $XFT_LIBS) , ,
3216 [[#include <X11/X.h>]])
3218 if test "${HAVE_XFT}" = "yes"; then
3219 AC_DEFINE(HAVE_XFT, 1, [Define to 1 if you have the Xft library.])
3221 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $XFT_CFLAGS"
3222 fi # "${HAVE_XFT}" = "yes"
3223 CPPFLAGS=$OLD_CPPFLAGS
3226 fi # "$HAVE_XFT" != no
3227 fi # "x${with_xft}" != "xno"
3229 ## We used to allow building with FreeType and without Xft.
3230 ## However, the ftx font backend driver is not in good shape.
3231 if test "$HAVE_XFT" != "yes"; then
3232 dnl For the "Does Emacs use" message at the end.
3236 dnl Strict linkers fail with
3237 dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
3238 dnl if -lfreetype is not specified.
3239 dnl The following is needed to set FREETYPE_LIBS.
3240 EMACS_CHECK_MODULES([FREETYPE], [freetype2])
3242 test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(libxft requires libfreetype)
3246 if test "${HAVE_FREETYPE}" = "yes"; then
3247 AC_DEFINE(HAVE_FREETYPE, 1,
3248 [Define to 1 if using the freetype and fontconfig libraries.])
3249 if test "${with_libotf}" != "no"; then
3250 EMACS_CHECK_MODULES([LIBOTF], [libotf])
3251 if test "$HAVE_LIBOTF" = "yes"; then
3252 AC_DEFINE(HAVE_LIBOTF, 1, [Define to 1 if using libotf.])
3253 AC_CHECK_LIB(otf, OTF_get_variation_glyphs,
3254 HAVE_OTF_GET_VARIATION_GLYPHS=yes,
3255 HAVE_OTF_GET_VARIATION_GLYPHS=no)
3256 if test "${HAVE_OTF_GET_VARIATION_GLYPHS}" = "yes"; then
3257 AC_DEFINE(HAVE_OTF_GET_VARIATION_GLYPHS, 1,
3258 [Define to 1 if libotf has OTF_get_variation_glyphs.])
3262 dnl FIXME should there be an error if HAVE_FREETYPE != yes?
3263 dnl Does the new font backend require it, or can it work without it?
3267 if test "${HAVE_LIBOTF}" = yes; then
3268 if test "${with_m17n_flt}" != "no"; then
3269 EMACS_CHECK_MODULES([M17N_FLT], [m17n-flt])
3270 if test "$HAVE_M17N_FLT" = "yes"; then
3271 AC_DEFINE(HAVE_M17N_FLT, 1, [Define to 1 if using libm17n-flt.])
3282 ### End of font-backend (under X11) section.
3284 AC_SUBST(FREETYPE_CFLAGS)
3285 AC_SUBST(FREETYPE_LIBS)
3286 AC_SUBST(FONTCONFIG_CFLAGS)
3287 AC_SUBST(FONTCONFIG_LIBS)
3288 AC_SUBST(LIBOTF_CFLAGS)
3289 AC_SUBST(LIBOTF_LIBS)
3290 AC_SUBST(M17N_FLT_CFLAGS)
3291 AC_SUBST(M17N_FLT_LIBS)
3294 if test "${HAVE_X11}" = "yes"; then
3295 if test "${with_cairo}" != "no"; then
3296 CAIRO_REQUIRED=1.12.0
3297 CAIRO_MODULE="cairo >= $CAIRO_REQUIRED"
3298 EMACS_CHECK_MODULES(CAIRO, $CAIRO_MODULE)
3299 if test $HAVE_CAIRO = yes; then
3300 AC_DEFINE(USE_CAIRO, 1, [Define to 1 if using cairo.])
3302 AC_MSG_ERROR([cairo requested but not found.])
3305 CFLAGS="$CFLAGS $CAIRO_CFLAGS"
3306 LIBS="$LIBS $CAIRO_LIBS"
3307 AC_SUBST(CAIRO_CFLAGS)
3308 AC_SUBST(CAIRO_LIBS)
3312 if test "${HAVE_X11}" = "yes"; then
3313 AC_CHECK_HEADER(X11/Xlib-xcb.h,
3314 AC_CHECK_LIB(xcb, xcb_translate_coordinates, HAVE_XCB=yes))
3315 if test "${HAVE_XCB}" = "yes"; then
3316 AC_CHECK_LIB(X11-xcb, XGetXCBConnection, HAVE_X11_XCB=yes)
3317 if test "${HAVE_X11_XCB}" = "yes"; then
3318 AC_DEFINE(USE_XCB, 1,
3319 [Define to 1 if you have the XCB library and X11-XCB library for mixed
3320 X11/XCB programming.])
3321 XCB_LIBS="-lX11-xcb -lxcb"
3327 ### Use -lXpm if available, unless '--with-xpm=no'.
3328 ### mingw32 doesn't use -lXpm, since it loads the library dynamically.
3329 ### The Cygwin-w32 build uses <noX/xpm.h> instead of <X11/xpm.h>, so
3330 ### we need to set LDFLAGS accordingly.
3333 if test "${HAVE_W32}" = "yes" && test "${opsys}" = "cygwin"; then
3334 if test "${with_xpm}" != "no"; then
3335 SAVE_LDFLAGS="$LDFLAGS"
3336 LDFLAGS="$LDFLAGS -L/usr/lib/noX"
3337 AC_CHECK_HEADER(noX/xpm.h,
3338 [AC_CHECK_LIB(Xpm, XpmReadFileToImage, HAVE_XPM=yes)])
3339 if test "${HAVE_XPM}" = "yes"; then
3340 AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
3341 [emacs_cv_cpp_xpm_return_alloc_pixels],
3342 [AC_EGREP_CPP(no_return_alloc_pixels,
3343 [#include "noX/xpm.h"
3344 #ifndef XpmReturnAllocPixels
3345 no_return_alloc_pixels
3347 ], emacs_cv_cpp_xpm_return_alloc_pixels=no,
3348 emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
3350 if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
3352 LDFLAGS="$SAVE_LDFLAGS"
3357 if test "${HAVE_XPM}" = "yes"; then
3358 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3363 if test "${HAVE_X11}" = "yes"; then
3364 dnl Avoid Xpm on AIX unless requested, as it crashes; see Bug#17598.
3365 test "$opsys$with_xpm_set" = aix4-2 && with_xpm=no
3367 if test "${with_xpm}" != "no"; then
3368 AC_CHECK_HEADER(X11/xpm.h,
3369 [AC_CHECK_LIB(Xpm, XpmReadFileToPixmap, HAVE_XPM=yes, , -lX11)])
3370 if test "${HAVE_XPM}" = "yes"; then
3371 AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
3372 [emacs_cv_cpp_xpm_return_alloc_pixels],
3373 [AC_EGREP_CPP(no_return_alloc_pixels,
3374 [#include "X11/xpm.h"
3375 #ifndef XpmReturnAllocPixels
3376 no_return_alloc_pixels
3378 ], emacs_cv_cpp_xpm_return_alloc_pixels=no,
3379 emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
3381 if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
3387 if test "${HAVE_XPM}" = "yes"; then
3388 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3390 elif test "$opsys,$LUCID_LIBW" = aix4-2,-lXaw; then
3391 dnl AIX -lXaw needs -lXpm linked too; see Bug#17598 Message#152.
3396 ### FIXME: Perhaps regroup to minimize code duplication due to MinGW's
3397 ### slightly different requirements wrt image libraries (it doesn't
3398 ### use -lXpm because it loads the xpm shared library dynamically at
3400 if test "${opsys}" = "mingw32"; then
3401 if test "${with_xpm}" != "no"; then
3402 AC_CHECK_HEADER(X11/xpm.h, HAVE_XPM=yes, HAVE_XPM=no, [
3406 if test "${HAVE_XPM}" = "yes"; then
3407 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3413 ### Use -ljpeg if available, unless '--with-jpeg=no'.
3416 if test "${with_jpeg}" != "no"; then
3417 AC_CACHE_CHECK([for jpeglib 6b or later],
3420 for emacs_cv_jpeglib in yes -ljpeg no; do
3421 case $emacs_cv_jpeglib in
3424 *) LIBS="$LIBS $emacs_cv_jpeglib";;
3428 [[#undef HAVE_STDLIB_H /* Avoid config.h/jpeglib.h collision. */
3429 #include <stdio.h> /* jpeglib.h needs FILE and size_t. */
3430 #include <jpeglib.h>
3432 char verify[JPEG_LIB_VERSION < 62 ? -1 : 1];
3433 struct jpeg_decompress_struct cinfo;
3436 jpeg_create_decompress (&cinfo);
3437 WARNMS (&cinfo, JWRN_JPEG_EOF);
3438 jpeg_destroy_decompress (&cinfo);
3440 [emacs_link_ok=yes],
3443 test $emacs_link_ok = yes && break
3445 if test "$emacs_cv_jpeglib" != no; then
3447 AC_DEFINE([HAVE_JPEG], 1,
3448 [Define to 1 if you have the jpeg library (typically -ljpeg).])
3449 ### mingw32 doesn't use -ljpeg, since it loads the library
3450 ### dynamically when needed, and doesn't want a run-time
3451 ### dependency on the jpeglib DLL.
3452 test "$emacs_cv_jpeglib" != yes && test "${opsys}" != "mingw32" \
3453 && LIBJPEG=$emacs_cv_jpeglib
3460 if test "${with_lcms2}" != "no"; then
3462 AC_SEARCH_LIBS([cmsCreateTransform], [lcms2], [HAVE_LCMS2=yes])
3464 case $ac_cv_search_cmsCreateTransform in
3465 -*) LIBLCMS2=$ac_cv_search_cmsCreateTransform ;;
3468 if test "${HAVE_LCMS2}" = "yes"; then
3469 AC_DEFINE([HAVE_LCMS2], 1, [Define to 1 if you have the lcms2 library (-llcms2).])
3470 ### mingw32 doesn't use -llcms2, since it loads the library dynamically.
3471 if test "${opsys}" = "mingw32"; then
3479 if test "${with_zlib}" != "no"; then
3481 AC_SEARCH_LIBS([inflateEnd], [z], [HAVE_ZLIB=yes])
3483 case $ac_cv_search_inflateEnd in
3484 -*) LIBZ=$ac_cv_search_inflateEnd ;;
3487 if test "${HAVE_ZLIB}" = "yes"; then
3488 AC_DEFINE([HAVE_ZLIB], 1, [Define to 1 if you have the zlib library (-lz).])
3489 ### mingw32 doesn't use -lz, since it loads the library dynamically.
3490 if test "${opsys}" = "mingw32"; then
3496 ### Dynamic modules support
3501 cygwin|mingw32) MODULES_SUFFIX=".dll" ;;
3502 *) MODULES_SUFFIX=".so" ;;
3504 if test "${with_modules}" != "no"; then
3510 cygwin|mingw32|darwin)
3514 # BSD systems have dlopen in libc.
3515 AC_CHECK_FUNC([dlopen], [HAVE_MODULES=yes])
3519 if test "${HAVE_MODULES}" = no; then
3520 AC_MSG_ERROR([Dynamic modules are not supported on your system])
3523 LIBS="$LIBS $LIBMODULES"
3524 AC_CHECK_FUNCS([dladdr dlfunc])
3529 if test "${HAVE_MODULES}" = yes; then
3530 MODULES_OBJ="dynlib.o emacs-module.o"
3531 AC_DEFINE(HAVE_MODULES, 1, [Define to 1 if dynamic modules are enabled])
3532 AC_DEFINE_UNQUOTED(MODULES_SUFFIX, "$MODULES_SUFFIX",
3533 [System extension for dynamic libraries])
3535 AC_SUBST(MODULES_OBJ)
3536 AC_SUBST(LIBMODULES)
3537 AC_SUBST(HAVE_MODULES)
3538 AC_SUBST(MODULES_SUFFIX)
3540 AC_CONFIG_FILES([src/emacs-module.h])
3541 AC_SUBST_FILE([module_env_snippet_25])
3542 AC_SUBST_FILE([module_env_snippet_26])
3543 module_env_snippet_25="$srcdir/src/module-env-25.h"
3544 module_env_snippet_26="$srcdir/src/module-env-26.h"
3546 ### Use -lpng if available, unless '--with-png=no'.
3550 if test "${NS_IMPL_COCOA}" = yes; then
3552 elif test "${with_png}" != no; then
3553 # mingw32 loads the library dynamically.
3554 if test "$opsys" = mingw32; then
3555 AC_CHECK_HEADER([png.h], [HAVE_PNG=yes])
3556 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3557 AC_MSG_CHECKING([for png])
3558 png_cflags=`(libpng-config --cflags) 2>&AS_MESSAGE_LOG_FD` &&
3559 png_ldflags=`(libpng-config --ldflags) 2>&AS_MESSAGE_LOG_FD` || {
3560 # libpng-config does not work; configure by hand.
3561 # Debian unstable as of July 2003 has multiple libpngs, and puts png.h
3562 # in /usr/include/libpng.
3563 if test -r /usr/include/libpng/png.h &&
3564 test ! -r /usr/include/png.h; then
3565 png_cflags=-I/usr/include/libpng
3573 CFLAGS="$CFLAGS $png_cflags"
3574 LIBS="$png_ldflags -lz -lm $LIBS"
3576 [AC_LANG_PROGRAM([[#include <png.h>]],
3577 [[return !png_get_channels (0, 0);]])],
3579 PNG_CFLAGS=`AS_ECHO(["$png_cflags"]) | sed -e "$edit_cflags"`
3581 # $LIBPNG requires explicit -lz in some cases.
3582 # We don't know what those cases are, exactly, so play it safe and
3583 # append -lz to any nonempty $LIBPNG, unless we're already using LIBZ.
3584 if test -n "$LIBPNG" && test -z "$LIBZ"; then
3585 LIBPNG="$LIBPNG -lz"
3589 AC_MSG_RESULT([$HAVE_PNG])
3592 if test $HAVE_PNG = yes; then
3593 AC_DEFINE([HAVE_PNG], [1], [Define to 1 if you have the png library.])
3596 CFLAGS="$CFLAGS $PNG_CFLAGS"
3597 AC_CHECK_DECL([png_longjmp],
3599 [AC_DEFINE([PNG_DEPSTRUCT], [],
3600 [Define to empty to suppress deprecation warnings when building
3601 with --enable-gcc-warnings and with libpng versions before 1.5,
3602 which lack png_longjmp.])],
3608 AC_SUBST(PNG_CFLAGS)
3610 ### Use -ltiff if available, unless '--with-tiff=no'.
3611 ### mingw32 doesn't use -ltiff, since it loads the library dynamically.
3614 if test "${opsys}" = "mingw32"; then
3615 if test "${with_tiff}" != "no"; then
3616 AC_CHECK_HEADER(tiffio.h, HAVE_TIFF=yes, HAVE_TIFF=no)
3618 if test "${HAVE_TIFF}" = "yes"; then
3619 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3621 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3622 if test "${with_tiff}" != "no"; then
3623 AC_CHECK_HEADER(tiffio.h,
3625 # At least one tiff package requires the jpeg library.
3626 if test "${HAVE_JPEG}" = yes; then tifflibs="-ljpeg $tifflibs"; fi
3627 AC_CHECK_LIB(tiff, TIFFGetVersion, HAVE_TIFF=yes, , $tifflibs)])
3630 if test "${HAVE_TIFF}" = "yes"; then
3631 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3632 dnl FIXME -lz -lm, as per libpng?
3638 ### Use -lgif or -lungif if available, unless '--with-gif=no'.
3639 ### mingw32 doesn't use -lgif/-lungif, since it loads the library dynamically.
3642 if test "${opsys}" = "mingw32"; then
3643 if test "${with_gif}" != "no"; then
3644 AC_CHECK_HEADER(gif_lib.h, HAVE_GIF=yes, HAVE_GIF=no)
3646 if test "${HAVE_GIF}" = "yes"; then
3647 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3649 elif test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no" \
3650 || test "${HAVE_W32}" = "yes"; then
3651 AC_CHECK_HEADER(gif_lib.h,
3652 # EGifPutExtensionLast only exists from version libungif-4.1.0b1.
3653 # Earlier versions can crash Emacs, but version 5.0 removes EGifPutExtensionLast.
3654 [AC_CHECK_LIB(gif, GifMakeMapObject, HAVE_GIF=yes,
3655 [AC_CHECK_LIB(gif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=maybe)])])
3657 if test "$HAVE_GIF" = yes; then
3659 elif test "$HAVE_GIF" = maybe; then
3660 # If gif_lib.h but no libgif, try libungif.
3661 AC_CHECK_LIB(ungif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=no)
3662 test "$HAVE_GIF" = yes && LIBGIF=-lungif
3665 if test "${HAVE_GIF}" = "yes"; then
3666 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3671 dnl Check for required libraries.
3674 if test "${HAVE_X11}" = "yes"; then
3675 test "${with_xpm}" != "no" && test "${HAVE_XPM}" != "yes" &&
3676 MISSING="libXpm" && WITH_NO="--with-xpm=no"
3677 test "${with_jpeg}" != "no" && test "${HAVE_JPEG}" != "yes" &&
3678 MISSING="$MISSING libjpeg" && WITH_NO="$WITH_NO --with-jpeg=no"
3679 test "${with_png}" != "no" && test "${HAVE_PNG}" != "yes" &&
3680 MISSING="$MISSING libpng" && WITH_NO="$WITH_NO --with-png=no"
3681 test "${with_gif}" != "no" && test "${HAVE_GIF}" != "yes" &&
3682 MISSING="$MISSING libgif/libungif" && WITH_NO="$WITH_NO --with-gif=no"
3683 test "${with_tiff}" != "no" && test "${HAVE_TIFF}" != "yes" &&
3684 MISSING="$MISSING libtiff" && WITH_NO="$WITH_NO --with-tiff=no"
3686 test "${with_gnutls}" != "no" && test "${HAVE_GNUTLS}" != "yes" &&
3687 MISSING="$MISSING gnutls" && WITH_NO="$WITH_NO --with-gnutls=no"
3688 if test "X${MISSING}" != X; then
3689 AC_MSG_ERROR([The following required libraries were not found:
3691 Maybe some development libraries/packages are missing?
3692 If you don't want to link with them give
3694 as options to configure])
3697 ### Use -lgpm if available, unless '--with-gpm=no'.
3700 if test "${with_gpm}" != "no"; then
3701 AC_CHECK_HEADER(gpm.h,
3702 [AC_CHECK_LIB(gpm, Gpm_Open, HAVE_GPM=yes)])
3704 if test "${HAVE_GPM}" = "yes"; then
3705 AC_DEFINE(HAVE_GPM, 1, [Define to 1 if you have the gpm library (-lgpm).])
3711 dnl Check for malloc/malloc.h on darwin
3712 AC_CHECK_HEADERS_ONCE(malloc/malloc.h)
3715 ### Use NeXTstep API to implement GUI.
3716 if test "${HAVE_NS}" = "yes"; then
3717 AC_DEFINE(HAVE_NS, 1, [Define to 1 if you are using the NeXTstep API, either GNUstep or Cocoa on macOS.])
3718 if test "${NS_IMPL_COCOA}" = "yes"; then
3719 AC_DEFINE(NS_IMPL_COCOA, 1, [Define to 1 if you are using NS windowing under macOS.])
3721 if test "${NS_IMPL_GNUSTEP}" = "yes"; then
3722 AC_DEFINE(NS_IMPL_GNUSTEP, 1, [Define to 1 if you are using NS windowing under GNUstep.])
3723 if test $NS_GNUSTEP_CONFIG != yes; then
3724 # See also .m.o rule in src/Makefile.in. */
3725 # FIXME: are all these flags really needed? Document here why. */
3726 GNUSTEP_CFLAGS="-D_REENTRANT -fPIC -fno-strict-aliasing -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
3727 ## Extra CFLAGS applied to src/*.m files.
3728 GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -fgnu-runtime -Wno-import -fconstant-string-class=NSConstantString -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGSWARN -DGSDIAGNOSE"
3734 ### Use session management (-lSM -lICE) if available
3737 if test "${HAVE_X11}" = "yes"; then
3738 AC_CHECK_HEADER(X11/SM/SMlib.h,
3739 [AC_CHECK_LIB(SM, SmcOpenConnection, HAVE_X_SM=yes, , -lICE)])
3741 if test "${HAVE_X_SM}" = "yes"; then
3742 AC_DEFINE(HAVE_X_SM, 1, [Define to 1 if you have the SM library (-lSM).])
3748 ### Use XRandr (-lXrandr) if available
3750 if test "${HAVE_X11}" = "yes"; then
3751 XRANDR_REQUIRED=1.2.2
3752 XRANDR_MODULES="xrandr >= $XRANDR_REQUIRED"
3753 EMACS_CHECK_MODULES([XRANDR], [$XRANDR_MODULES])
3754 if test $HAVE_XRANDR = no; then
3755 # Test old way in case pkg-config doesn't have it (older machines).
3756 # Include Xrender.h by hand to work around bug in older Xrandr.h
3757 # (e.g. RHEL5) and silence (harmless) configure warning (bug#18465).
3758 AC_CHECK_HEADER(X11/extensions/Xrandr.h,
3759 [AC_CHECK_LIB(Xrandr, XRRGetScreenResources, HAVE_XRANDR=yes)],
3760 [], [AC_INCLUDES_DEFAULT
3761 #include <X11/extensions/Xrender.h>])
3762 if test $HAVE_XRANDR = yes; then
3763 XRANDR_LIBS=-lXrandr
3766 if test $HAVE_XRANDR = yes; then
3767 AC_DEFINE(HAVE_XRANDR, 1, [Define to 1 if you have the XRandr extension.])
3770 AC_SUBST(XRANDR_CFLAGS)
3771 AC_SUBST(XRANDR_LIBS)
3773 ### Use Xinerama (-lXinerama) if available
3775 if test "${HAVE_X11}" = "yes"; then
3776 XINERAMA_REQUIRED=1.0.2
3777 XINERAMA_MODULES="xinerama >= $XINERAMA_REQUIRED"
3778 EMACS_CHECK_MODULES([XINERAMA], [$XINERAMA_MODULES])
3779 if test $HAVE_XINERAMA = no; then
3780 # Test old way in case pkg-config doesn't have it (older machines).
3781 AC_CHECK_HEADER(X11/extensions/Xinerama.h,
3782 [AC_CHECK_LIB(Xinerama, XineramaQueryExtension, HAVE_XINERAMA=yes)])
3783 if test $HAVE_XINERAMA = yes; then
3784 XINERAMA_LIBS=-lXinerama
3787 if test $HAVE_XINERAMA = yes; then
3788 AC_DEFINE(HAVE_XINERAMA, 1, [Define to 1 if you have the Xinerama extension.])
3791 AC_SUBST(XINERAMA_CFLAGS)
3792 AC_SUBST(XINERAMA_LIBS)
3794 ### Use Xfixes (-lXfixes) if available
3796 if test "${HAVE_X11}" = "yes"; then
3797 XFIXES_REQUIRED=4.0.0
3798 XFIXES_MODULES="xfixes >= $XFIXES_REQUIRED"
3799 EMACS_CHECK_MODULES([XFIXES], [$XFIXES_MODULES])
3800 if test $HAVE_XFIXES = no; then
3801 # Test old way in case pkg-config doesn't have it (older machines).
3802 AC_CHECK_HEADER(X11/extensions/Xfixes.h,
3803 [AC_CHECK_LIB(Xfixes, XFixesHideCursor, HAVE_XFIXES=yes)])
3804 if test $HAVE_XFIXES = yes; then
3805 XFIXES_LIBS=-lXfixes
3808 if test $HAVE_XFIXES = yes; then
3809 AC_DEFINE(HAVE_XFIXES, 1, [Define to 1 if you have the Xfixes extension.])
3812 AC_SUBST(XFIXES_CFLAGS)
3813 AC_SUBST(XFIXES_LIBS)
3815 ### Use Xdbe (-lXdbe) if available
3817 if test "${HAVE_X11}" = "yes"; then
3818 AC_CHECK_HEADER(X11/extensions/Xdbe.h,
3819 [AC_CHECK_LIB(Xext, XdbeAllocateBackBufferName, HAVE_XDBE=yes)],
3821 [#include <X11/Xlib.h>
3823 if test $HAVE_XDBE = yes; then
3826 if test $HAVE_XDBE = yes; then
3827 AC_DEFINE(HAVE_XDBE, 1, [Define to 1 if you have the Xdbe extension.])
3830 AC_SUBST(XDBE_CFLAGS)
3833 ### Use libxml (-lxml2) if available
3834 ### mingw32 doesn't use -lxml2, since it loads the library dynamically.
3836 if test "${with_xml2}" != "no"; then
3837 ### I'm not sure what the version number should be, so I just guessed.
3838 EMACS_CHECK_MODULES([LIBXML2], [libxml-2.0 > 2.6.17])
3839 # Built-in libxml2 on OS X 10.8 lacks libxml-2.0.pc.
3840 if test "${HAVE_LIBXML2}" != "yes" && test "$opsys" = "darwin"; then
3841 SAVE_CPPFLAGS="$CPPFLAGS"
3842 if test -z "$xcsdkdir" -a -n "$XCRUN" -a ! -d /usr/include; then
3843 dnl /usr/include is not found. Try Xcode SDK dir if it is sane.
3844 xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
3846 *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
3850 CPPFLAGS="$CPPFLAGS -I$xcsdkdir/usr/include/libxml2"
3851 AC_CHECK_HEADER(libxml/HTMLparser.h,
3852 [AC_CHECK_DECL(HTML_PARSE_RECOVER, HAVE_LIBXML2=yes, ,
3853 [#include <libxml/HTMLparser.h>])])
3854 CPPFLAGS="$SAVE_CPPFLAGS"
3855 if test "${HAVE_LIBXML2}" = "yes"; then
3856 LIBXML2_CFLAGS="-I'$xcsdkdir/usr/include/libxml2'"
3857 LIBXML2_LIBS="-lxml2"
3860 if test "${HAVE_LIBXML2}" = "yes"; then
3861 if test "${opsys}" != "mingw32"; then
3862 AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no,
3867 if test "${HAVE_LIBXML2}" = "yes"; then
3868 AC_DEFINE(HAVE_LIBXML2, 1, [Define to 1 if you have the libxml library (-lxml2).])
3875 AC_SUBST(LIBXML2_LIBS)
3876 AC_SUBST(LIBXML2_CFLAGS)
3880 if test ! "$with_mailutils"; then
3881 # Check for mail-locking functions in a "mail" library. Probably this should
3882 # have the same check as for liblockfile below.
3883 AC_CHECK_LIB([mail], [maillock], [have_mail=yes], [have_mail=no])
3884 if test $have_mail = yes; then
3886 AC_DEFINE([HAVE_LIBMAIL], [1],
3887 [Define to 1 if you have the 'mail' library (-lmail).])
3890 LIBS="$LIBS_MAIL $LIBS"
3891 AC_CHECK_FUNCS([touchlock])
3894 dnl Debian, at least:
3895 AC_CHECK_LIB([lockfile], [maillock], [have_lockfile=yes], [have_lockfile=no])
3896 if test $have_lockfile = yes; then
3897 LIBS_MAIL=-llockfile
3898 AC_DEFINE([HAVE_LIBLOCKFILE], [1],
3899 [Define to 1 if you have the 'lockfile' library (-llockfile).])
3901 # If we have the shared liblockfile, assume we must use it for mail
3902 # locking (e.g. Debian). If we couldn't link against liblockfile
3903 # (no liblockfile.a installed), ensure that we don't need to.
3904 dnl This works for files generally, not just executables.
3905 dnl Should we look elsewhere for it? Maybe examine /etc/ld.so.conf?
3906 AC_CHECK_PROG([liblockfile], [liblockfile.so], [yes], [no],
3907 [/usr/lib:/lib:/usr/local/lib:$LD_LIBRARY_PATH])
3908 if test "$ac_cv_prog_liblockfile" = yes; then
3909 AC_MSG_ERROR([Shared liblockfile found but can't link against it.
3910 This probably means that movemail could lose mail.
3911 There may be a 'development' package to install containing liblockfile.])
3914 AC_CHECK_HEADERS([maillock.h])
3916 ## Define MAIL_USE_FLOCK (or LOCKF) if the mailer uses flock (or lockf) to
3917 ## interlock access to the mail spool. The alternative is a lock file named
3918 ## /usr/spool/mail/$USER.lock.
3921 aix4-2) mail_lock="lockf" ;;
3923 gnu|freebsd|dragonfly|netbsd|openbsd|darwin) mail_lock="flock" ;;
3925 ## On GNU/Linux systems, both methods are used by various mail programs.
3926 ## I assume most people are using newer mailers that have heard of flock.
3927 ## Change this if you need to.
3928 ## Debian contains a patch which says: "On Debian/GNU/Linux systems,
3929 ## configure gets the right answers, and that means *NOT* using flock.
3930 ## Using flock is guaranteed to be the wrong thing. See Debian Policy
3931 ## for details." and then uses '#ifdef DEBIAN'. Unfortunately the
3932 ## Debian maintainer hasn't provided a clean fix for Emacs.
3933 ## movemail.c will use 'maillock' when MAILDIR, HAVE_LIBMAIL and
3934 ## HAVE_MAILLOCK_H are defined, so the following appears to be the
3935 ## correct logic. -- fx
3936 ## We must check for HAVE_LIBLOCKFILE too, as movemail does.
3937 ## liblockfile is a Free Software replacement for libmail, used on
3938 ## Debian systems and elsewhere. -rfr.
3941 if test $have_mail = yes || test $have_lockfile = yes; then
3942 test $ac_cv_header_maillock_h = yes && mail_lock=no
3946 mail_lock="none-needed" ;;
3950 flock) AC_DEFINE([MAIL_USE_FLOCK], [1],
3951 [Define if the mailer uses flock to interlock the mail spool.]);;
3953 lockf) AC_DEFINE([MAIL_USE_LOCKF], [1],
3954 [Define if the mailer uses lockf to interlock the mail spool.]);;
3958 *) BLESSMAIL_TARGET="need-blessmail" ;;
3961 AC_SUBST([BLESSMAIL_TARGET])
3962 AC_SUBST([LIBS_MAIL])
3965 LIBS="$LIB_PTHREAD $LIB_MATH $LIBS"
3966 AC_CHECK_FUNCS(accept4 fchdir gethostname \
3967 getrusage get_current_dir_name \
3968 lrand48 random rint trunc \
3969 select getpagesize setlocale newlocale \
3970 getrlimit setrlimit shutdown \
3971 pthread_sigmask strsignal setitimer \
3972 sendto recvfrom getsockname getifaddrs freeifaddrs \
3974 getpwent endpwent getgrent endgrent \
3975 cfmakeraw cfsetspeed __executable_start log2 prctl)
3978 dnl No need to check for posix_memalign if aligned_alloc works.
3979 AC_CHECK_FUNCS([aligned_alloc posix_memalign], [break])
3980 AC_CHECK_DECLS([aligned_alloc], [], [], [[#include <stdlib.h>]])
3982 dnl Cannot use AC_CHECK_FUNCS
3983 AC_CACHE_CHECK([for __builtin_frame_address],
3984 [emacs_cv_func___builtin_frame_address],
3985 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_frame_address (0);])],
3986 [emacs_cv_func___builtin_frame_address=yes],
3987 [emacs_cv_func___builtin_frame_address=no])])
3988 if test $emacs_cv_func___builtin_frame_address = yes; then
3989 AC_DEFINE([HAVE___BUILTIN_FRAME_ADDRESS], 1,
3990 [Define to 1 if you have the '__builtin_frame_address' function.])
3992 AC_CACHE_CHECK([for __builtin_unwind_init],
3993 emacs_cv_func___builtin_unwind_init,
3994 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_unwind_init ();])],
3995 emacs_cv_func___builtin_unwind_init=yes,
3996 emacs_cv_func___builtin_unwind_init=no)])
3997 if test $emacs_cv_func___builtin_unwind_init = yes; then
3998 AC_DEFINE(HAVE___BUILTIN_UNWIND_INIT, 1,
3999 [Define to 1 if you have the '__builtin_unwind_init' function.])
4002 AC_CHECK_HEADERS_ONCE(sys/un.h)
4007 AC_CHECK_FUNCS(grantpt)
4009 # PTY-related GNU extensions.
4010 AC_CHECK_FUNCS(getpt posix_openpt)
4012 dnl Run a test program that contains a call to tputs, a call that is
4013 dnl never executed. This tests whether a pre-'main' dynamic linker
4014 dnl works with the library. It's too much trouble to actually call
4015 dnl tputs in the test program, due to portability hassles. When
4016 dnl cross-compiling, assume the test program will run if it links.
4017 AC_DEFUN([tputs_link_source], [
4019 [[extern void tputs (const char *, int, int (*)(int));
4020 int main (int argc, char **argv)
4023 tputs (argv[0], 0, 0);
4027 # Check this now, so that we will NOT find the above functions in ncurses.
4028 # That is because we have not set up to link ncurses in lib-src.
4029 # It's better to believe a function is not available
4030 # than to expect to find it in ncurses.
4031 # Also we need tputs and friends to be able to build at all.
4032 AC_CACHE_CHECK([for library containing tputs], [emacs_cv_tputs_lib],
4033 [if test "${opsys}" = "mingw32"; then
4034 emacs_cv_tputs_lib='none required'
4036 # Maybe curses should be tried earlier?
4037 # See https://debbugs.gnu.org/9736#35
4038 for tputs_library in '' tinfo ncurses terminfo termcap curses; do
4040 if test -z "$tputs_library"; then
4041 emacs_cv_tputs_lib='none required'
4043 emacs_cv_tputs_lib=-l$tputs_library
4044 LIBS="$emacs_cv_tputs_lib $LIBS"
4046 AC_RUN_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no],
4047 [AC_LINK_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no])])
4049 if test "X$emacs_cv_tputs_lib" != Xno; then
4054 AS_CASE(["$emacs_cv_tputs_lib"],
4055 [no], [AC_MSG_ERROR([The required function 'tputs' was not found in any library.
4056 The following libraries were tried (in order):
4057 libtinfo, libncurses, libterminfo, libtermcap, libcurses
4058 Please try installing whichever of these libraries is most appropriate
4059 for your system, together with its header files.
4060 For example, a libncurses-dev(el) or similar package.])],
4061 [-l*], [LIBS_TERMCAP=$emacs_cv_tputs_lib],
4062 [*], [LIBS_TERMCAP=])
4064 ## Use termcap instead of terminfo?
4065 ## Only true for: freebsd < 40000, ms-w32, msdos, netbsd < 599002500.
4067 ## FIXME? In the cases below where we unconditionally set
4068 ## LIBS_TERMCAP="-lncurses", this overrides LIBS_TERMCAP = -ltinfo,
4069 ## if that was found above to have tputs.
4070 ## Should we use the gnu* logic everywhere?
4072 ## darwin: Prevents crashes when running Emacs in Terminal.app under 10.2.
4073 ## The ncurses library has been moved out of the System framework in
4074 ## Mac OS X 10.2. So if configure detects it, set the command-line
4075 ## option to use it.
4076 darwin) LIBS_TERMCAP="-lncurses" ;;
4078 gnu*) test -z "$LIBS_TERMCAP" && LIBS_TERMCAP="-lncurses" ;;
4081 AC_MSG_CHECKING([whether FreeBSD is new enough to use terminfo])
4082 AC_CACHE_VAL(emacs_cv_freebsd_terminfo,
4083 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <osreldate.h>]],
4084 [[#if __FreeBSD_version < 400000
4087 ]])], emacs_cv_freebsd_terminfo=yes, emacs_cv_freebsd_terminfo=no)])
4089 AC_MSG_RESULT($emacs_cv_freebsd_terminfo)
4091 if test $emacs_cv_freebsd_terminfo = yes; then
4092 LIBS_TERMCAP="-lncurses"
4095 LIBS_TERMCAP="-ltermcap"
4105 if test "x$LIBS_TERMCAP" != "x-lterminfo"; then
4107 LIBS_TERMCAP="-ltermcap"
4111 openbsd | dragonfly) LIBS_TERMCAP="-lncurses" ;;
4113 ## hpux: Make sure we get select from libc rather than from libcurses
4114 ## because libcurses on HPUX 10.10 has a broken version of select.
4115 ## We used to use -lc -lcurses, but this may be cleaner.
4116 ## FIXME? But TERMINFO = yes on hpux (it used to be explicitly
4117 # set that way, now it uses the default). Isn't this a contradiction?
4118 hpux*) LIBS_TERMCAP="-ltermcap" ;;
4122 TERMCAP_OBJ=tparam.o
4123 if test $TERMINFO = yes; then
4124 AC_DEFINE(TERMINFO, 1, [Define to 1 if you use terminfo instead of termcap.])
4125 TERMCAP_OBJ=terminfo.o
4127 if test "X$LIBS_TERMCAP" = "X-lncurses"; then
4128 AC_DEFINE(USE_NCURSES, 1, [Define to 1 if you use ncurses.])
4130 AC_SUBST(LIBS_TERMCAP)
4131 AC_SUBST(TERMCAP_OBJ)
4133 # GNU/Linux-specific timer functions.
4134 AC_CACHE_CHECK([for timerfd interface], [emacs_cv_have_timerfd],
4136 [AC_LANG_PROGRAM([[#include <sys/timerfd.h>
4138 [[timerfd_create (CLOCK_REALTIME,
4139 TFD_CLOEXEC | TFD_NONBLOCK);
4140 timerfd_settime (0, TFD_TIMER_ABSTIME, 0, 0);]])],
4141 [emacs_cv_have_timerfd=yes],
4142 [emacs_cv_have_timerfd=no])])
4143 if test "$emacs_cv_have_timerfd" = yes; then
4144 AC_DEFINE([HAVE_TIMERFD], 1,
4145 [Define to 1 if timerfd functions are supported as in GNU/Linux.])
4148 # Alternate stack for signal handlers.
4149 AC_CACHE_CHECK([whether signals can be handled on alternate stack],
4150 [emacs_cv_alternate_stack],
4152 [AC_LANG_PROGRAM([[#include <signal.h>
4155 struct sigaction sa;
4156 ss.ss_sp = malloc (SIGSTKSZ);
4157 ss.ss_size = SIGSTKSZ;
4158 sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
4159 sigaltstack (&ss, 0);
4160 sigaction (SIGSEGV, &sa, 0);]])],
4161 [emacs_cv_alternate_stack=yes],
4162 [emacs_cv_alternate_stack=no])])
4164 # Do we need the Hesiod library to provide the support routines?
4165 dnl FIXME? Should we be skipping this on Darwin too?
4168 if test "$with_hesiod" != no ; then
4169 # Don't set $LIBS here -- see comments above. FIXME which comments?
4171 AC_CHECK_FUNC(res_send, , [AC_CHECK_FUNC(__res_send, ,
4172 [AC_CHECK_LIB(resolv, res_send, resolv=yes,
4173 [AC_CHECK_LIB(resolv, __res_send, resolv=yes)])])])
4174 if test "$resolv" = yes ; then
4180 AC_CHECK_FUNC(hes_getmailhost, , [AC_CHECK_LIB(hesiod, hes_getmailhost,
4181 hesiod=yes, :, $RESOLVLIB)])
4183 if test x"$hesiod" = xyes; then
4185 LIBRESOLV=$RESOLVLIB
4191 # These tell us which Kerberos-related libraries to use.
4198 if test "${with_kerberos}" != no; then
4200 AC_CHECK_LIB(com_err, com_err, have_com_err=yes, have_com_err=no)
4201 if test $have_com_err = yes; then
4202 COM_ERRLIB=-lcom_err
4203 LIBS="$COM_ERRLIB $LIBS"
4205 AC_CHECK_LIB(crypto, mit_des_cbc_encrypt, have_crypto=yes, have_crypto=no)
4206 if test $have_crypto = yes; then
4208 LIBS="$CRYPTOLIB $LIBS"
4210 AC_CHECK_LIB(k5crypto, mit_des_cbc_encrypt, have_k5crypto=yes, have_k5crypto=no)
4211 if test $have_k5crypto = yes; then
4212 CRYPTOLIB=-lk5crypto
4213 LIBS="$CRYPTOLIB $LIBS"
4215 AC_CHECK_LIB(krb5, krb5_init_context, have_krb5=yes, have_krb5=no)
4216 if test $have_krb5=yes; then
4218 LIBS="$KRB5LIB $LIBS"
4220 dnl FIXME Simplify. Does not match 22 logic, thanks to default_off?
4221 if test "${with_kerberos5}" = no; then
4222 AC_CHECK_LIB(des425, des_cbc_encrypt, have_des425=yes, have_des425=no )
4223 if test $have_des425 = yes; then
4225 LIBS="$DESLIB $LIBS"
4227 AC_CHECK_LIB(des, des_cbc_encrypt, have_des=yes, have_des=no)
4228 if test $have_des = yes; then
4230 LIBS="$DESLIB $LIBS"
4233 AC_CHECK_LIB(krb4, krb_get_cred, have_krb4=yes, have_krb4=no)
4234 if test $have_krb4 = yes; then
4236 LIBS="$KRB4LIB $LIBS"
4238 AC_CHECK_LIB(krb, krb_get_cred, have_krb=yes, have_krb=no)
4239 if test $have_krb = yes; then
4241 LIBS="$KRB4LIB $LIBS"
4246 if test "${with_kerberos5}" != no; then
4247 AC_CHECK_HEADERS(krb5.h,
4248 [AC_CHECK_MEMBERS([krb5_error.text, krb5_error.e_text],,,
4249 [#include <krb5.h>])])
4251 AC_CHECK_HEADERS(krb.h,,
4252 [AC_CHECK_HEADERS(kerberosIV/krb.h,,
4253 [AC_CHECK_HEADERS(kerberos/krb.h)])])
4255 AC_CHECK_HEADERS(com_err.h)
4259 AC_SUBST(COM_ERRLIB)
4265 AC_CHECK_HEADERS(valgrind/valgrind.h)
4267 AC_CHECK_MEMBERS([struct unipair.unicode], [], [], [[#include <linux/kd.h>]])
4269 AC_CHECK_FUNCS_ONCE([sbrk])
4272 AC_CHECK_FUNC(socket, , ok_so_far=no)
4273 if test $ok_so_far = yes; then
4274 AC_CHECK_HEADER(netinet/in.h, , ok_so_far=no)
4276 if test $ok_so_far = yes; then
4277 AC_CHECK_HEADER(arpa/inet.h, , ok_so_far=no)
4279 if test $ok_so_far = yes; then
4280 dnl Fixme: Not used. Should this be HAVE_SOCKETS?
4281 AC_DEFINE(HAVE_INET_SOCKETS, 1,
4282 [Define to 1 if you have inet sockets.])
4287 AC_CHECK_FUNCS(snprintf)
4289 dnl Check for glib. This differs from other library checks in that
4290 dnl Emacs need not link to glib unless some other library is already
4291 dnl linking to glib. Although glib provides no facilities that Emacs
4292 dnl needs for its own purposes, when glib is present Emacs needs to
4293 dnl use primitives like g_main_context_query to avoid clashing with
4294 dnl glib at a low level.
4296 dnl Check this late, since it depends on $GTK_CFLAGS etc.
4298 AC_CACHE_CHECK([whether GLib is linked in], [emacs_cv_links_glib],
4299 [OLDCFLAGS="$CFLAGS"
4301 CFLAGS="$CFLAGS $GTK_CFLAGS $RSVG_CFLAGS $DBUS_CFLAGS $SETTINGS_CFLAGS"
4302 LIBS="$LIBS $GTK_LIBS $RSVG_LIBS $DBUS_LIBS $SETTINGS_LIBS"
4303 CFLAGS="$CFLAGS $NOTIFY_CFLAGS $CAIRO_CFLAGS"
4304 LIBS="$LIBS $NOTIFY_LIBS $CAIRO_LIBS"
4305 AC_LINK_IFELSE([AC_LANG_PROGRAM(
4308 [[g_print ("Hello world");]])],
4309 [emacs_cv_links_glib=yes],
4310 [emacs_cv_links_glib=no])
4313 if test "${emacs_cv_links_glib}" = "yes"; then
4314 AC_DEFINE(HAVE_GLIB, 1, [Define to 1 if GLib is linked in.])
4315 if test "$HAVE_NS" = no;then
4321 dnl Adapted from Haible's version.
4322 AC_CACHE_CHECK([for nl_langinfo and CODESET], emacs_cv_langinfo_codeset,
4323 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
4324 [[char* cs = nl_langinfo(CODESET);]])],
4325 emacs_cv_langinfo_codeset=yes,
4326 emacs_cv_langinfo_codeset=no)
4328 if test $emacs_cv_langinfo_codeset = yes; then
4329 AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
4330 [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
4335 dnl Fixme: AC_SYS_POSIX_TERMIOS should probably be used, but it's not clear
4336 dnl how the tty code is related to POSIX and/or other versions of termios.
4337 dnl The following looks like a useful start.
4339 dnl AC_SYS_POSIX_TERMIOS
4340 dnl if test $ac_cv_sys_posix_termios = yes; then
4341 dnl AC_DEFINE(HAVE_TERMIOS, 1, [Define to 1 if you have POSIX-style functions
4342 dnl and macros for terminal control.])
4343 dnl AC_DEFINE(HAVE_TCATTR, 1, [Define to 1 if you have tcgetattr and tcsetattr.])
4346 dnl Turned on June 1996 supposing nobody will mind it.
4347 dnl MinGW emulates passwd database, so this feature doesn't make sense there.
4348 if test "${opsys}" != "mingw32"; then
4349 AC_DEFINE(AMPERSAND_FULL_NAME, 1, [Define to use the convention that &
4350 in the full name stands for the login id.])
4353 dnl Everybody supports this, except MS.
4354 dnl Seems like the kind of thing we should be testing for, though.
4355 ## Note: PTYs are broken on darwin <6. Use at your own risk.
4356 if test "${opsys}" != "mingw32"; then
4357 AC_DEFINE(HAVE_PTYS, 1, [Define if the system supports pty devices.])
4360 dnl Everybody supports this, except MS-DOS.
4361 dnl Seems like the kind of thing we should be testing for, though.
4362 dnl Compare with HAVE_INET_SOCKETS (which is unused...) above.
4363 AC_DEFINE(HAVE_SOCKETS, 1, [Define if the system supports
4364 4.2-compatible sockets.])
4366 AH_TEMPLATE(INTERNAL_TERMINAL, [This is substituted when $TERM is "internal".])
4368 AH_TEMPLATE(NULL_DEVICE, [Name of the file to open to get
4369 a null file, or a data sink.])
4370 if test "${opsys}" = "mingw32"; then
4371 AC_DEFINE(NULL_DEVICE, ["NUL:"])
4373 AC_DEFINE(NULL_DEVICE, ["/dev/null"])
4376 if test "${opsys}" = "mingw32"; then
4381 AC_DEFINE_UNQUOTED(SEPCHAR, ['$SEPCHAR'], [Character that separates PATH elements.])
4382 dnl This is for MinGW, and is used in test/Makefile.in.
4383 dnl The MSYS Bash has heuristics for replacing ':' with ';' when it
4384 dnl decides that a command-line argument to be passed to a MinGW program
4385 dnl is a PATH-style list of directories. But that heuristics plays it
4386 dnl safe, and only does the replacement when it is _absolutely_ sure it
4387 dnl sees a colon-separated list of file names; e.g. ":." is left alone,
4388 dnl which breaks in-tree builds. So we do this manually instead.
4389 dnl Note that we cannot rely on PATH_SEPARATOR, as that one will always
4390 dnl be computed as ':' in MSYS Bash.
4393 dnl Everybody supports this, except MS-DOS.
4394 AC_DEFINE(subprocesses, 1, [Define to enable asynchronous subprocesses.])
4396 AC_DEFINE(USER_FULL_NAME, [pw->pw_gecos], [How to get a user's full name.])
4399 AC_DEFINE(DIRECTORY_SEP, ['/'],
4400 [Character that separates directories in a file name.])
4402 if test "${opsys}" = "mingw32"; then
4403 AC_DEFINE(IS_DEVICE_SEP(_c_), [((_c_) == ':')],
4404 [Returns true if character is a device separator.])
4406 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == '/' || (_c_) == '\\')],
4407 [Returns true if character is a directory separator.])
4409 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP(_c_))],
4410 [Returns true if character is any form of separator.])
4412 AC_DEFINE(IS_DEVICE_SEP(_c_), 0,
4413 [Returns true if character is a device separator.])
4415 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == DIRECTORY_SEP)],
4416 [Returns true if character is a directory separator.])
4418 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_))],
4419 [Returns true if character is any form of separator.])
4422 if test "$USE_X_TOOLKIT" != "none"; then
4426 dnl Assar Westerlund <assar@sics.se> says this is necessary
4427 dnl for HP-UX 10.20, and that it works for HP-UX 0 as well.
4431 if test "$have_editres" != no && test ! -z "$LIBXMU"; then
4433 dnl See libXmu.a check above.
4434 if test x$HAVE_X11XTR6 = xyes; then
4435 LIBS="-lXt -lSM -lICE $LIBXMU"
4437 OTHERLIBS="-lXt -$LIBXMU"
4440 [#include <X11/Intrinsic.h>
4441 #include <X11/Xmu/Editres.h>],
4442 [_XEditResCheckMessages (0, 0, 0, 0);],
4443 [AC_DEFINE([X_TOOLKIT_EDITRES], 1,
4444 [Define to 1 if we should use XEditRes.])])
4451 dnl Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
4452 dnl instead, there's a system variable _sys_nsig. Unfortunately, we
4453 dnl need the constant to dimension an array. So wire in the appropriate
4455 AC_DEFINE(NSIG_MINIMUM, 32, [Minimum value of NSIG.])
4459 emacs_broken_SIGIO=no
4462 dnl SIGIO exists, but the feature doesn't work in the way Emacs needs.
4463 hpux* | nacl | openbsd | sol2* | unixware )
4464 emacs_broken_SIGIO=yes
4468 dnl On AIX Emacs uses the gmalloc.c malloc implementation. But given
4469 dnl the way this system works, libc functions that return malloced
4470 dnl memory use the libc malloc implementation. Calling xfree or
4471 dnl xrealloc on the results of such functions results in a crash.
4473 dnl One solution for this could be to define SYSTEM_MALLOC in configure,
4474 dnl but that does not currently work on this system.
4476 dnl It is possible to completely override the malloc implementation on
4477 dnl AIX, but that involves putting the malloc functions in a shared
4478 dnl library and setting the MALLOCTYPE environment variable to point to
4479 dnl that shared library.
4481 dnl Emacs currently calls xrealloc on the results of get_current_dir name,
4482 dnl to avoid a crash just use the Emacs implementation for that function.
4484 dnl FIXME We could change the AC_CHECK_FUNCS call near the start
4485 dnl of this file, so that we do not check for get_current_dir_name
4486 dnl on AIX. But that might be fragile if something else ends
4487 dnl up testing for get_current_dir_name as a dependency.
4488 AC_DEFINE(BROKEN_GET_CURRENT_DIR_NAME, 1, [Define if
4489 get_current_dir_name should not be used.])
4493 dnl Circumvent a bug in FreeBSD. In the following sequence of
4494 dnl writes/reads on a PTY, read(2) returns bogus data:
4496 dnl write(2) 1022 bytes
4497 dnl write(2) 954 bytes, get EAGAIN
4498 dnl read(2) 1024 bytes in process_read_output
4499 dnl read(2) 11 bytes in process_read_output
4501 dnl That is, read(2) returns more bytes than have ever been written
4502 dnl successfully. The 1033 bytes read are the 1022 bytes written
4503 dnl successfully after processing (for example with CRs added if the
4504 dnl terminal is set up that way which it is here). The same bytes will
4505 dnl be seen again in a later read(2), without the CRs.
4506 AC_DEFINE(BROKEN_PTY_READ_AFTER_EAGAIN, 1, [Define on FreeBSD to
4507 work around an issue when reading from a PTY.])
4513 dnl FIXME Can't we test if this exists (eg /proc/$$)?
4514 AC_DEFINE(HAVE_PROCFS, 1, [Define if you have the /proc filesystem.])
4519 darwin | dragonfly | freebsd | netbsd | openbsd )
4520 AC_DEFINE(DONT_REOPEN_PTY, 1, [Define if process.c does not need to
4521 close a pty to make it a controlling terminal (it is already a
4522 controlling terminal of the subprocess, because we did ioctl TIOCSCTTY).])
4526 dnl FIXME Surely we can test for this rather than hard-code it.
4528 netbsd | openbsd) sound_device="/dev/audio" ;;
4529 *) sound_device="/dev/dsp" ;;
4533 AC_DEFINE_UNQUOTED(DEFAULT_SOUND_DEVICE, "$sound_device",
4534 [Name of the default sound device.])
4537 dnl Emacs can read input using SIGIO and buffering characters itself,
4538 dnl or using CBREAK mode and making C-g cause SIGINT.
4539 dnl The choice is controlled by the variable interrupt_input.
4541 dnl Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
4543 dnl Emacs uses the presence of the USABLE_SIGIO macro
4544 dnl to indicate whether or not signal-driven I/O is possible. It uses
4545 dnl INTERRUPT_INPUT to decide whether to use it by default.
4547 dnl SIGIO can be used only on systems that implement it (4.2 and 4.3).
4548 dnl CBREAK mode has two disadvantages
4549 dnl 1) At least in 4.2, it is impossible to handle the Meta key properly.
4550 dnl I hear that in system V this problem does not exist.
4551 dnl 2) Control-G causes output to be discarded.
4552 dnl I do not know whether this can be fixed in system V.
4554 dnl Another method of doing input is planned but not implemented.
4555 dnl It would have Emacs fork off a separate process
4556 dnl to read the input and send it to the true Emacs process
4559 darwin | gnu-linux | gnu-kfreebsd )
4560 AC_DEFINE(INTERRUPT_INPUT, 1, [Define to read input using SIGIO.])
4565 dnl If the system's imake configuration file defines 'NeedWidePrototypes'
4566 dnl as 'NO', we must define NARROWPROTO manually. Such a define is
4567 dnl generated in the Makefile generated by 'xmkmf'. If we don't define
4568 dnl NARROWPROTO, we will see the wrong function prototypes for X functions
4569 dnl taking float or double parameters.
4571 cygwin|gnu|gnu-linux|gnu-kfreebsd|freebsd|netbsd|openbsd)
4572 AC_DEFINE(NARROWPROTO, 1, [Define if system's imake configuration
4573 file defines 'NeedWidePrototypes' as 'NO'.])
4578 dnl Used in process.c, this must be a loop, even if it only runs once.
4579 AH_TEMPLATE(PTY_ITERATION, [How to iterate over PTYs.])
4580 dnl Only used if !PTY_ITERATION. Iterate from FIRST_PTY_LETTER to z,
4581 dnl trying suffixes 0-16.
4582 AH_TEMPLATE(FIRST_PTY_LETTER, [Letter to use in finding device name of
4583 first PTY, if PTYs are supported.])
4584 AH_TEMPLATE(PTY_OPEN, [How to open a PTY, if non-standard.])
4585 AH_TEMPLATE(PTY_NAME_SPRINTF, [How to get the device name of the control
4586 end of a PTY, if non-standard.])
4587 AH_TEMPLATE(PTY_TTY_NAME_SPRINTF, [How to get device name of the tty
4588 end of a PTY, if non-standard.])
4592 AC_DEFINE(PTY_ITERATION, [int c; for (c = 0; !c ; c++)])
4593 dnl You allocate a pty by opening /dev/ptc to get the master side.
4594 dnl To get the name of the slave side, you just ttyname() the master side.
4595 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptc");])
4596 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [strcpy (pty_name, ttyname (fd));])
4600 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4601 dnl multi-line AC_DEFINEs are hard. :(
4602 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)])
4603 AC_DEFINE(PTY_NAME_SPRINTF, [])
4604 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
4608 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4611 gnu-linux | gnu-kfreebsd | dragonfly | freebsd | netbsd | darwin | nacl )
4613 if test "x$ac_cv_func_grantpt" = xyes; then
4614 AC_DEFINE(UNIX98_PTYS, 1, [Define if the system has Unix98 PTYs.])
4615 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4616 dnl Note that grantpt and unlockpt may fork. We must block SIGCHLD
4617 dnl to prevent sigchld_handler from intercepting the child's death.
4618 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); }])
4619 dnl if HAVE_POSIX_OPENPT
4620 if test "x$ac_cv_func_posix_openpt" = xyes; then
4621 AC_DEFINE(PTY_OPEN, [do { fd = posix_openpt (O_RDWR | O_CLOEXEC | O_NOCTTY); if (fd < 0 && errno == EINVAL) fd = posix_openpt (O_RDWR | O_NOCTTY); } while (false)])
4622 AC_DEFINE(PTY_NAME_SPRINTF, [])
4624 elif test "x$ac_cv_func_getpt" = xyes; then
4625 AC_DEFINE(PTY_OPEN, [fd = getpt ()])
4626 AC_DEFINE(PTY_NAME_SPRINTF, [])
4628 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4631 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4636 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4637 AC_DEFINE(PTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/ptym/pty%c%x", c, i);])
4638 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/pty/tty%c%x", c, i);])
4642 dnl On SysVr4, grantpt(3) forks a subprocess, so do not use
4643 dnl O_CLOEXEC when opening the pty, and keep the SIGCHLD handler
4644 dnl from intercepting that death. If any child but grantpt's should die
4645 dnl within, it should be caught after sigrelse(2).
4646 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4647 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); }])
4651 dnl Comments are as per sol2*.
4652 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4653 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); }])
4660 dnl This change means that we don't loop through allocate_pty too
4661 dnl many times in the (rare) event of a failure.
4662 AC_DEFINE(FIRST_PTY_LETTER, ['z'])
4663 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4664 dnl Push various streams modules onto a PTY channel. Used in process.c.
4665 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.])
4670 AH_TEMPLATE(SIGNALS_VIA_CHARACTERS, [Make process_send_signal work by
4671 "typing" a signal character on the pty.])
4674 dnl Perry Smith <pedz@ddivt1.austin.ibm.com> says this is correct for AIX.
4675 aix4-2 | cygwin | gnu | dragonfly | freebsd | netbsd | openbsd | darwin )
4676 AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4679 dnl 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works.
4680 dnl FIXME Does gnu-kfreebsd have linux/version.h? It seems unlikely...
4681 gnu-linux | gnu-kfreebsd )
4683 AC_CACHE_CHECK([for signals via characters], [emacs_cv_signals_via_chars],
4684 [AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4685 #include <linux/version.h>
4686 #if LINUX_VERSION_CODE < 0x20400
4687 # error "Linux version too old"
4689 ]], [[]])], emacs_cv_signals_via_chars=yes, emacs_cv_signals_via_chars=no)])
4691 test "$emacs_cv_signals_via_chars" = yes && AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4696 AH_TEMPLATE(TAB3, [Undocumented.])
4699 darwin) AC_DEFINE(TAB3, OXTABS) ;;
4701 gnu | dragonfly | freebsd | netbsd | openbsd )
4702 AC_DEFINE(TABDLY, OXTABS, [Undocumented.])
4703 AC_DEFINE(TAB3, OXTABS)
4706 gnu-linux | gnu-kfreebsd )
4707 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4711 ]], [[]])], AC_DEFINE(GC_MARK_SECONDARY_STACK(),
4712 [do { extern void *__libc_ia64_register_backing_store_base; __builtin_ia64_flushrs (); mark_memory (__libc_ia64_register_backing_store_base, __builtin_ia64_bsp ());} while (false)],
4713 [Mark a secondary stack, like the register stack on the ia64.]), [])
4717 AC_DEFINE(RUN_TIME_REMAP, 1, [Define if emacs.c needs to call
4718 run_time_remap; for HPUX.])
4723 dnl This won't be used automatically yet. We also need to know, at least,
4724 dnl that the stack is continuous.
4725 AH_TEMPLATE(GC_SETJMP_WORKS, [Define if setjmp is known to save all
4726 registers relevant for conservative garbage collection in the jmp_buf.])
4730 dnl Not all the architectures are tested, but there are Debian packages
4731 dnl for SCM and/or Guile on them, so the technique must work. See also
4732 dnl comments in alloc.c concerning setjmp and gcc.
4733 dnl Fixme: it's probably safe to just use the GCC conditional below.
4734 gnu-linux | gnu-kfreebsd )
4735 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4736 #if defined __i386__ || defined __sparc__ || defined __mc68000__ \
4737 || defined __alpha__ || defined __mips__ || defined __s390__ \
4738 || defined __arm__ || defined __powerpc__ || defined __amd64__ \
4739 || defined __ia64__ || defined __sh__
4742 # error "setjmp not known to work on this arch"
4744 ]], [[]])], AC_DEFINE(GC_SETJMP_WORKS, 1))
4749 if test x$GCC = xyes; then
4750 dnl GC_SETJMP_WORKS is nearly always appropriate for GCC.
4751 AC_DEFINE(GC_SETJMP_WORKS, 1)
4754 aix* | dragonfly | freebsd | netbsd | openbsd | sol2* )
4755 AC_DEFINE(GC_SETJMP_WORKS, 1)
4760 dnl In a weird quirk, MS runtime uses _setjmp and longjmp.
4761 AC_CACHE_CHECK([for _setjmp], [emacs_cv_func__setjmp],
4764 [[#include <setjmp.h>
4766 # define _longjmp longjmp
4771 _longjmp (j, 1);]])],
4772 [emacs_cv_func__setjmp=yes],
4773 [emacs_cv_func__setjmp=no])])
4774 if test $emacs_cv_func__setjmp = yes; then
4775 AC_DEFINE([HAVE__SETJMP], 1, [Define to 1 if _setjmp and _longjmp work.])
4778 # We need to preserve signal mask to handle C stack overflows.
4779 AC_CACHE_CHECK([for sigsetjmp], [emacs_cv_func_sigsetjmp],
4782 [[#include <setjmp.h>
4785 if (! sigsetjmp (j, 1))
4786 siglongjmp (j, 1);]])],
4787 [emacs_cv_func_sigsetjmp=yes],
4788 [emacs_cv_func_sigsetjmp=no])])
4789 if test $emacs_cv_func_sigsetjmp = yes; then
4790 AC_DEFINE([HAVE_SIGSETJMP], 1,
4791 [Define to 1 if sigsetjmp and siglongjmp work.])
4794 case $emacs_cv_func_sigsetjmp,$emacs_cv_alternate_stack,$opsys in
4795 yes,yes,* | *,*,mingw32)
4796 AC_DEFINE([HAVE_STACK_OVERFLOW_HANDLING], 1,
4797 [Define to 1 if C stack overflow can be handled in some cases.]);;
4802 dnl TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
4803 dnl subprocesses the usual way. But TIOCSIGNAL does work for PTYs,
4804 dnl and this is all we need.
4805 AC_DEFINE(TIOCSIGSEND, TIOCSIGNAL, [Some platforms redefine this.])
4812 dnl Used in xfaces.c.
4813 AC_DEFINE(XOS_NEEDS_TIME_H, 1, [Compensate for a bug in Xos.h on
4814 some systems, where it requires time.h.])
4819 dnl Define symbols to identify the version of Unix this is.
4820 dnl Define all the symbols that apply correctly.
4821 AH_TEMPLATE(DOS_NT, [Define if the system is MS DOS or MS Windows.])
4822 AH_TEMPLATE(MSDOS, [Define if the system is MS DOS.])
4823 AH_TEMPLATE(USG, [Define if the system is compatible with System III.])
4824 AH_TEMPLATE(USG5_4, [Define if the system is compatible with System V Release 4.])
4829 dnl This symbol should be defined on AIX Version 3 ???????
4830 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4832 # error "_AIX not defined"
4834 ]], [[]])], [], AC_DEFINE(_AIX, [], [Define if the system is AIX.]))
4838 AC_DEFINE(CYGWIN, 1, [Define if the system is Cygwin.])
4842 dnl Not __APPLE__, as this may not be defined on non-macOS Darwin.
4843 dnl Not DARWIN, because Panther and lower CoreFoundation.h use DARWIN to
4844 dnl distinguish macOS from pure Darwin.
4845 AC_DEFINE(DARWIN_OS, [], [Define if the system is Darwin.])
4848 gnu-linux | gnu-kfreebsd )
4850 AC_DEFINE(GNU_LINUX, [], [Define if ths system is compatible with GNU/Linux.])
4855 AC_DEFINE(HPUX, [], [Define if the system is HPUX.])
4859 AC_DEFINE(DOS_NT, [])
4860 AC_DEFINE(WINDOWSNT, 1, [Define if compiling for native MS Windows.])
4861 if test "x$ac_enable_checking" != "x" ; then
4862 AC_DEFINE(EMACSDEBUG, 1, [Define to 1 to enable w32 debug facilities.])
4868 AC_DEFINE(USG5_4, [])
4869 AC_DEFINE(SOLARIS2, [], [Define if the system is Solaris.])
4874 AC_DEFINE(USG5_4, [])
4878 AC_CACHE_CHECK([for usable FIONREAD], [emacs_cv_usable_FIONREAD],
4881 dnl BUILD 9008 - FIONREAD problem still exists in X-Windows.
4882 emacs_cv_usable_FIONREAD=no
4886 emacs_cv_usable_FIONREAD=yes
4891 [AC_LANG_PROGRAM([[#include <sys/types.h>
4892 #include <sys/ioctl.h>
4894 # include <sys/filio.h>
4897 [[int foo = ioctl (0, FIONREAD, &foo);]])],
4898 [emacs_cv_usable_FIONREAD=yes],
4899 [emacs_cv_usable_FIONREAD=no])
4902 if test $emacs_cv_usable_FIONREAD = yes; then
4903 AC_DEFINE([USABLE_FIONREAD], [1], [Define to 1 if FIONREAD is usable.])
4905 if test $emacs_broken_SIGIO = no; then
4906 AC_CACHE_CHECK([for usable SIGIO], [emacs_cv_usable_SIGIO],
4908 [AC_LANG_PROGRAM([[#include <fcntl.h>
4911 [[int foo = SIGIO | F_SETFL | FASYNC;]])],
4912 [emacs_cv_usable_SIGIO=yes],
4913 [emacs_cv_usable_SIGIO=no])],
4914 [emacs_cv_usable_SIGIO=yes],
4915 [emacs_cv_usable_SIGIO=no])
4916 if test $emacs_cv_usable_SIGIO = yes; then
4917 AC_DEFINE([USABLE_SIGIO], [1], [Define to 1 if SIGIO is usable.])
4924 dnl It works to open the pty's tty in the parent (Emacs), then
4925 dnl close and reopen it in the child.
4926 AC_DEFINE(USG_SUBTTY_WORKS, 1, [Define for USG systems where it
4927 works to open a pty's tty in the parent process, then close and
4928 reopen it in the child.])
4932 AC_DEFINE(_STRUCTURED_PROC, 1, [Needed for system_process_attributes
4937 # Set up the CFLAGS for real compilation, so we can substitute it.
4938 CFLAGS="$REAL_CFLAGS"
4939 CPPFLAGS="$REAL_CPPFLAGS"
4942 ## Hack to detect a buggy GCC version.
4943 if test "$GCC" = yes && \
4944 $CC --version 2> /dev/null | grep 'gcc.* 4.5.0' >/dev/null; then
4946 *-fno-optimize-sibling-calls*) ;;
4948 AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS.]);;
4952 version=$PACKAGE_VERSION
4954 copyright="Copyright (C) 2017 Free Software Foundation, Inc."
4955 AC_DEFINE_UNQUOTED(COPYRIGHT, ["$copyright"],
4956 [Short copyright string for this version of Emacs.])
4959 ### Specify what sort of things we'll be editing into Makefile and config.h.
4960 ### Use configuration here uncanonicalized to avoid exceeding size limits.
4962 AC_SUBST(configuration)
4967 AC_SUBST(exec_prefix)
4970 AC_SUBST(sharedstatedir)
4971 AC_SUBST(libexecdir)
4975 AC_SUBST(standardlisppath)
4976 AC_SUBST(locallisppath)
4978 AC_SUBST(x_default_search_path)
4980 AC_SUBST(archlibdir)
4986 ## FIXME? Nothing uses @LD_SWITCH_X_SITE@.
4987 ## src/Makefile.in did add LD_SWITCH_X_SITE (as a cpp define) to the
4988 ## end of LIBX_BASE, but nothing ever set it.
4989 AC_SUBST(LD_SWITCH_X_SITE)
4990 AC_SUBST(C_SWITCH_X_SITE)
4991 AC_SUBST(GNUSTEP_CFLAGS)
4993 ## Used in lwlib/Makefile.in.
4994 AC_SUBST(X_TOOLKIT_TYPE)
4996 AC_SUBST(ns_appbindir)
4997 AC_SUBST(ns_appresdir)
4999 AC_SUBST(GNU_OBJC_CFLAGS)
5000 AC_SUBST(OTHER_FILES)
5002 if test -n "${term_header}"; then
5003 AC_DEFINE_UNQUOTED(TERM_HEADER, "${term_header}",
5004 [Define to the header for the built-in window system.])
5007 AC_DEFINE_UNQUOTED(EMACS_CONFIGURATION, "${canonical}",
5008 [Define to the canonical Emacs configuration name.])
5009 AC_DEFINE_UNQUOTED(EMACS_CONFIG_OPTIONS, "${emacs_config_options}",
5010 [Define to the options passed to configure.])
5015 if test "${HAVE_X_WINDOWS}" = "yes" ; then
5016 AC_DEFINE(HAVE_X_WINDOWS, 1,
5017 [Define to 1 if you want to use the X window system.])
5019 XOBJ="xterm.o xfns.o xselect.o xrdb.o xsmfns.o xsettings.o"
5021 if test "$HAVE_CAIRO" = "yes"; then
5022 FONT_OBJ="ftfont.o ftcrfont.o"
5023 elif test "$HAVE_XFT" = "yes"; then
5024 FONT_OBJ="$FONT_OBJ ftfont.o xftfont.o ftxfont.o"
5025 elif test "$HAVE_FREETYPE" = "yes"; then
5026 FONT_OBJ="$FONT_OBJ ftfont.o ftxfont.o"
5036 if test "${USE_X_TOOLKIT}" != "none" ; then
5038 AC_DEFINE(USE_X_TOOLKIT, 1, [Define to 1 if using an X toolkit.])
5039 if test "${USE_X_TOOLKIT}" = "LUCID"; then
5040 AC_DEFINE(USE_LUCID, 1, [Define to 1 if using the Lucid X toolkit.])
5041 elif test "${USE_X_TOOLKIT}" = "MOTIF"; then
5042 AC_DEFINE(USE_MOTIF, 1, [Define to 1 if using the Motif X toolkit.])
5046 ## Paul Abrahams <abrahams at equinox.shaysnet.com> says this is needed.
5047 MOTIF_LIBW="$MOTIF_LIBW -lXpm"
5051 ## Richard Anthony Ryan <ryanr at ellingtn.ftc.nrcs.usda.gov>
5052 ## says -lXimp is needed in UNIX_SV ... 4.2 1.1.2.
5053 MOTIF_LIBW="MOTIF_LIBW -lXimp"
5057 ## olson@mcs.anl.gov says -li18n is needed by -lXm.
5058 MOTIF_LIBW="$MOTIF_LIBW -li18n"
5061 MOTIF_LIBW="$MOTIF_LIBW $LIBXP"
5064 AC_SUBST(WIDGET_OBJ)
5067 case "$USE_X_TOOLKIT" in
5068 MOTIF) TOOLKIT_LIBW="$MOTIF_LIBW" ;;
5069 LUCID) TOOLKIT_LIBW="$LUCID_LIBW" ;;
5070 none) test "x$HAVE_GTK" = "xyes" && TOOLKIT_LIBW="$GTK_LIBS" ;;
5072 if test "$HAVE_XWIDGETS" = "yes"; then
5073 TOOLKIT_LIBW="$TOOLKIT_LIBW -lXcomposite"
5075 AC_SUBST(TOOLKIT_LIBW)
5077 if test "${opsys}" != "mingw32"; then
5078 if test "$USE_X_TOOLKIT" = "none"; then
5079 LIBXT_OTHER="\$(LIBXSM)"
5081 LIBXT_OTHER="\$(LIBXMU) -lXt \$(LIBXTR6) -lXext"
5084 AC_SUBST(LIBXT_OTHER)
5086 if test "${HAVE_X11}" = "yes" ; then
5087 AC_DEFINE(HAVE_X11, 1,
5088 [Define to 1 if you want to use version 11 of X windows.])
5089 LIBX_OTHER="\$(LIBXT) \$(LIBX_EXTRA)"
5093 AC_SUBST(LIBX_OTHER)
5096 if test "$HAVE_GTK" = yes || test "$HAVE_X11" != yes; then
5098 elif test "$USE_X_TOOLKIT" = none; then
5100 LIBXMENU='$(oldXMenudir)/libXMenu11.a'
5101 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS oldXMenu"
5103 LIBXMENU='$(lwlibdir)/liblw.a'
5104 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS lwlib"
5108 AC_CACHE_CHECK([for struct alignment],
5109 [emacs_cv_struct_alignment],
5111 [AC_LANG_PROGRAM([[#include <stddef.h>
5112 struct __attribute__ ((aligned (8))) s { char c; };
5113 struct t { char c; struct s s; };
5114 char verify[offsetof (struct t, s) == 8 ? 1 : -1];
5116 [emacs_cv_struct_alignment=yes],
5117 [emacs_cv_struct_alignment=no])])
5118 if test "$emacs_cv_struct_alignment" = yes; then
5119 AC_DEFINE([HAVE_STRUCT_ATTRIBUTE_ALIGNED], 1,
5120 [Define to 1 if 'struct __attribute__ ((aligned (N)))' aligns the
5121 structure to an N-byte boundary.])
5124 if test "${GNU_MALLOC}" = "yes" ; then
5125 AC_DEFINE(GNU_MALLOC, 1,
5126 [Define to 1 if you want to use the GNU memory allocator.])
5130 if test "${REL_ALLOC}" = "yes" ; then
5131 AC_DEFINE(REL_ALLOC, 1,
5132 [Define REL_ALLOC if you want to use the relocating allocator for
5135 test "$system_malloc" != "yes" && RALLOC_OBJ=ralloc.o
5137 AC_SUBST(RALLOC_OBJ)
5139 if test "$opsys" = "cygwin"; then
5140 CYGWIN_OBJ="cygw32.o"
5141 ## Cygwin differs because of its unexec().
5143 POST_ALLOC_OBJ=lastfile.o
5144 elif test "$opsys" = "mingw32"; then
5147 POST_ALLOC_OBJ=lastfile.o
5150 PRE_ALLOC_OBJ=lastfile.o
5153 AC_SUBST(CYGWIN_OBJ)
5154 AC_SUBST(PRE_ALLOC_OBJ)
5155 AC_SUBST(POST_ALLOC_OBJ)
5157 dnl Call this 'FORTIFY_SOUR' so that it sorts before the 'FORTIFY_SOURCE'
5158 dnl verbatim defined above. The tricky name is apropos, as this hack
5159 dnl makes Fortify go sour!
5160 AH_VERBATIM([FORTIFY_SOUR],
5161 [/* Without the following workaround, Emacs runs slowly on OS X 10.8.
5162 The workaround disables some useful run-time checking, so it
5163 should be conditional to the platforms with the performance bug.
5164 Perhaps Apple will fix this some day; also see m4/extern-inline.m4. */
5165 #if defined __APPLE__ && defined __GNUC__
5166 # ifndef _DONT_USE_CTYPE_INLINE_
5167 # define _DONT_USE_CTYPE_INLINE_
5169 # ifndef _FORTIFY_SOURCE
5170 # define _FORTIFY_SOURCE 0
5175 # If user asks to omit features, disable optional features that gnulib
5176 # might otherwise enable.
5177 if test "$with_features" = no && test "$enable_acl" != yes; then
5181 # Configure gnulib. Although this does not affect CFLAGS or LIBS permanently.
5182 # it temporarily reverts them to their pre-pkg-config values,
5183 # because gnulib needs to work with both src (which uses the
5184 # pkg-config stuff) and lib-src (which does not). For example, gnulib
5185 # may need to determine whether LIB_CLOCK_GETTIME should contain -lrt,
5186 # and it therefore needs to run in an environment where LIBS does not
5187 # already contain -lrt merely because 'pkg-config --libs' printed '-lrt'
5188 # for some package unrelated to lib-src.
5191 CFLAGS=$pre_PKG_CONFIG_CFLAGS
5192 LIBS="$LIB_PTHREAD $pre_PKG_CONFIG_LIBS"
5193 gl_ASSERT_NO_GNULIB_POSIXCHECK
5194 gl_ASSERT_NO_GNULIB_TESTS
5199 if test "${opsys}" = "mingw32"; then
5200 CPPFLAGS="$CPPFLAGS -DUSE_CRT_DLL=1 -I \${abs_top_srcdir}/nt/inc"
5201 # Remove unneeded switches from the value of CC that goes to Makefiles
5202 CC=`AS_ECHO(["$CC"]) | sed -e "s,$GCC_TEST_OPTIONS,,"`
5206 aix4-2) LD_SWITCH_SYSTEM_TEMACS="-Wl,-bnodelcsect" ;;
5208 cygwin) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000" ;;
5211 ## The -headerpad option tells ld (see man page) to leave room at the
5212 ## end of the header for adding load commands. Needed for dumping.
5213 ## 0x1000 is enough for roughly 52 load commands on the x86_64
5214 ## architecture (where they are 78 bytes each). The actual number of
5215 ## load commands added is not consistent but normally ranges from
5216 ## about 14 to about 34. Setting it high gets us plenty of slop and
5217 ## only costs about 1.5K of wasted binary space.
5218 headerpad_extra=1000
5219 if test "$HAVE_NS" = "yes"; then
5220 libs_nsgui="-framework AppKit"
5221 if test "$NS_IMPL_COCOA" = "yes"; then
5222 libs_nsgui="$libs_nsgui -framework IOKit"
5227 LD_SWITCH_SYSTEM_TEMACS="-fno-pie -prebind $libs_nsgui -Xlinker -headerpad -Xlinker $headerpad_extra"
5229 ## This is here because src/Makefile.in did some extra fiddling around
5230 ## with LD_SWITCH_SYSTEM. It seems cleaner to put this in
5231 ## LD_SWITCH_SYSTEM_TEMACS instead,
5232 test "x$LD_SWITCH_SYSTEM" = "x" && test "x$GCC" != "xyes" && \
5233 LD_SWITCH_SYSTEM_TEMACS="-X $LD_SWITCH_SYSTEM_TEMACS"
5236 ## LD_SWITCH_X_SITE_RPATH is a -rpath option saying where to
5237 ## find X at run-time.
5238 ## When handled by cpp, this was in LD_SWITCH_SYSTEM. However, at the
5239 ## point where configure sourced the s/*.h file, LD_SWITCH_X_SITE_RPATH
5240 ## had not yet been defined and was expanded to null. Hence LD_SWITCH_SYSTEM
5241 ## had different values in configure (in ac_link) and src/Makefile.in.
5242 ## It seems clearer therefore to put this piece in LD_SWITCH_SYSTEM_TEMACS.
5243 gnu*) LD_SWITCH_SYSTEM_TEMACS="\$(LD_SWITCH_X_SITE_RPATH)" ;;
5246 ## Is it any better under MinGW64 to relocate emacs into higher addresses?
5247 case "$canonical" in
5248 x86_64-*-*) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x400000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5249 *) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x01000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5253 *) LD_SWITCH_SYSTEM_TEMACS= ;;
5256 # -no-pie or -nopie fixes a temacs segfault on Gentoo, OpenBSD,
5257 # Ubuntu, and other systems with "hardened" GCC configurations for
5258 # some reason (Bug#18784). We don't know why this works, but not
5259 # segfaulting is better than segfaulting. Use ac_c_werror_flag=yes
5260 # when trying the option, otherwise clang keeps warning that it does
5261 # not understand it, and pre-4.6 GCC has a similar problem
5262 # (Bug#20338). Prefer -no-pie to -nopie, as -no-pie is the
5263 # spelling used by GCC 6.1.0 and later (Bug#24682).
5265 [for $CC option to disable position independent executables],
5266 [emacs_cv_prog_cc_no_pie],
5267 [emacs_save_c_werror_flag=$ac_c_werror_flag
5268 emacs_save_LDFLAGS=$LDFLAGS
5269 ac_c_werror_flag=yes
5270 for emacs_cv_prog_cc_no_pie in -no-pie -nopie no; do
5271 test $emacs_cv_prog_cc_no_pie = no && break
5272 LDFLAGS="$emacs_save_LDFLAGS $emacs_cv_prog_cc_no_pie"
5273 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [break])
5275 ac_c_werror_flag=$emacs_save_c_werror_flag
5276 LDFLAGS=$emacs_save_LDFLAGS])
5277 if test "$emacs_cv_prog_cc_no_pie" != no; then
5278 LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS $emacs_cv_prog_cc_no_pie"
5281 if test x$ac_enable_profiling != x ; then
5283 *freebsd | gnu-linux) ;;
5284 *) LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -pg" ;;
5288 LD_SWITCH_SYSTEM_TEMACS="$LDFLAGS_NOCOMBRELOC $LD_SWITCH_SYSTEM_TEMACS"
5290 AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
5292 ## Common for all window systems
5293 if test "$window_system" != "none"; then
5294 AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])
5295 AC_DEFINE(POLL_FOR_INPUT, 1, [Define if you poll periodically to detect C-g.])
5296 WINDOW_SYSTEM_OBJ="fontset.o fringe.o image.o"
5299 AC_SUBST(WINDOW_SYSTEM_OBJ)
5301 AH_TOP([/* GNU Emacs site configuration template file.
5303 Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2017
5304 Free Software Foundation, Inc.
5306 This file is part of GNU Emacs.
5308 GNU Emacs is free software: you can redistribute it and/or modify
5309 it under the terms of the GNU General Public License as published by
5310 the Free Software Foundation, either version 3 of the License, or (at
5311 your option) any later version.
5313 GNU Emacs is distributed in the hope that it will be useful,
5314 but WITHOUT ANY WARRANTY; without even the implied warranty of
5315 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5316 GNU General Public License for more details.
5318 You should have received a copy of the GNU General Public License
5319 along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
5322 /* No code in Emacs #includes config.h twice, but some bits of code
5323 intended to work with other packages as well (like gmalloc.c)
5324 think they can include it as many times as they like. */
5325 #ifndef EMACS_CONFIG_H
5326 #define EMACS_CONFIG_H
5329 AH_BOTTOM([#include <conf_post.h>
5331 #endif /* EMACS_CONFIG_H */
5340 #### Report on what we decided to do.
5341 #### Report GTK as a toolkit, even if it doesn't use Xt.
5342 #### It makes printing result more understandable as using GTK sets
5343 #### toolkit_scroll_bars to yes by default.
5344 if test "${HAVE_GTK}" = "yes"; then
5345 USE_X_TOOLKIT="$USE_GTK_TOOLKIT"
5348 if test $USE_ACL -ne 0; then
5349 ACL_SUMMARY="yes $LIB_ACL"
5354 emacs_standard_dirs='Standard dirs'
5356 Configured for '${canonical}'.
5358 Where should the build process find the source code? ${srcdir}
5359 What compiler should emacs be built with? ${CC} ${CFLAGS}
5360 Should Emacs use the GNU version of malloc? ${GNU_MALLOC}${GNU_MALLOC_reason}
5361 Should Emacs use a relocating allocator for buffers? ${REL_ALLOC}
5362 Should Emacs use mmap(2) for buffer allocation? $use_mmap_for_buffers
5363 What window system should Emacs use? ${window_system}
5364 What toolkit should Emacs use? ${USE_X_TOOLKIT}
5365 Where do we find X Windows header files? ${x_includes:-$emacs_standard_dirs}
5366 Where do we find X Windows libraries? ${x_libraries:-$emacs_standard_dirs}"])
5369 emacs_config_features=
5370 for opt in XAW3D XPM JPEG TIFF GIF PNG RSVG CAIRO IMAGEMAGICK SOUND GPM DBUS \
5371 GCONF GSETTINGS NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT \
5372 LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS X_TOOLKIT OLDXMENU X11 NS MODULES \
5373 XWIDGETS LIBSYSTEMD CANNOT_DUMP LCMS2; do
5376 CANNOT_DUMP) eval val=\${$opt} ;;
5377 NOTIFY|ACL) eval val=\${${opt}_SUMMARY} ;;
5378 TOOLKIT_SCROLL_BARS|X_TOOLKIT) eval val=\${USE_$opt} ;;
5379 *) eval val=\${HAVE_$opt} ;;
5382 xno|xnone|x) continue ;;
5387 GTK*|LUCID|MOTIF) opt=$val ;;
5392 AS_VAR_APPEND([emacs_config_features], ["$optsep$opt"])
5395 AC_DEFINE_UNQUOTED(EMACS_CONFIG_FEATURES, "${emacs_config_features}",
5396 [Summary of some of the main features enabled by configure.])
5398 AS_ECHO([" Does Emacs use -lXaw3d? ${HAVE_XAW3D}
5399 Does Emacs use -lXpm? ${HAVE_XPM}
5400 Does Emacs use -ljpeg? ${HAVE_JPEG}
5401 Does Emacs use -ltiff? ${HAVE_TIFF}
5402 Does Emacs use a gif library? ${HAVE_GIF} $LIBGIF
5403 Does Emacs use a png library? ${HAVE_PNG} $LIBPNG
5404 Does Emacs use -lrsvg-2? ${HAVE_RSVG}
5405 Does Emacs use cairo? ${HAVE_CAIRO}
5406 Does Emacs use -llcms2? ${HAVE_LCMS2}
5407 Does Emacs use imagemagick (version 6)? ${HAVE_IMAGEMAGICK}
5408 Does Emacs support sound? ${HAVE_SOUND}
5409 Does Emacs use -lgpm? ${HAVE_GPM}
5410 Does Emacs use -ldbus? ${HAVE_DBUS}
5411 Does Emacs use -lgconf? ${HAVE_GCONF}
5412 Does Emacs use GSettings? ${HAVE_GSETTINGS}
5413 Does Emacs use a file notification library? ${NOTIFY_SUMMARY}
5414 Does Emacs use access control lists? ${ACL_SUMMARY}
5415 Does Emacs use -lselinux? ${HAVE_LIBSELINUX}
5416 Does Emacs use -lgnutls? ${HAVE_GNUTLS}
5417 Does Emacs use -lxml2? ${HAVE_LIBXML2}
5418 Does Emacs use -lfreetype? ${HAVE_FREETYPE}
5419 Does Emacs use -lm17n-flt? ${HAVE_M17N_FLT}
5420 Does Emacs use -lotf? ${HAVE_LIBOTF}
5421 Does Emacs use -lxft? ${HAVE_XFT}
5422 Does Emacs use -lsystemd? ${HAVE_LIBSYSTEMD}
5423 Does Emacs directly use zlib? ${HAVE_ZLIB}
5424 Does Emacs have dynamic modules support? ${HAVE_MODULES}
5425 Does Emacs use toolkit scroll bars? ${USE_TOOLKIT_SCROLL_BARS}
5426 Does Emacs support Xwidgets (requires gtk3)? ${HAVE_XWIDGETS}
5427 Does Emacs have threading support in lisp? ${threads_enabled}
5430 if test -n "${EMACSDATA}"; then
5431 AS_ECHO([" Environment variable EMACSDATA set to: $EMACSDATA"])
5433 if test -n "${EMACSDOC}"; then
5434 AS_ECHO([" Environment variable EMACSDOC set to: $EMACSDOC"])
5439 if test "$HAVE_NS" = "yes"; then
5441 AS_ECHO(["You must run \"${MAKE-make} install\" in order to test the built application.
5442 The installed application will go to nextstep/Emacs.app and can be
5443 run or moved from there."])
5444 if test "$EN_NS_SELF_CONTAINED" = "yes"; then
5445 echo "The application will be fully self-contained."
5447 AS_ECHO(["The lisp resources for the application will be installed under ${prefix}.
5448 You may need to run \"${MAKE-make} install\" with sudo. The application will fail
5449 to run if these resources are not installed."])
5454 case $opsys,$emacs_uname_r in
5456 AC_MSG_WARN([[building Emacs on Cygwin 1.5 is not supported.]])
5461 # Remove any trailing slashes in these variables.
5463 */) prefix=`AS_DIRNAME(["$prefix."])`;;
5465 case $exec_prefix in
5466 */) exec_prefix=`AS_DIRNAME(["$exec_prefix."])`;;
5469 if test "$HAVE_NS" = "yes"; then
5470 if test "$NS_IMPL_GNUSTEP" = yes; then
5471 AC_CONFIG_FILES([nextstep/GNUstep/Emacs.base/Resources/Info-gnustep.plist:nextstep/templates/Info-gnustep.plist.in \
5472 nextstep/GNUstep/Emacs.base/Resources/Emacs.desktop:nextstep/templates/Emacs.desktop.in])
5473 ns_check_file=Resources/Info-gnustep.plist
5475 AC_CONFIG_FILES([nextstep/Cocoa/Emacs.base/Contents/Info.plist:nextstep/templates/Info.plist.in \
5476 nextstep/Cocoa/Emacs.base/Contents/Resources/English.lproj/InfoPlist.strings:nextstep/templates/InfoPlist.strings.in])
5477 ns_check_file=Contents/Info.plist
5479 AC_SUBST(ns_check_file)
5482 AC_CONFIG_FILES([Makefile lib/gnulib.mk])
5484 dnl config.status treats $srcdir specially, so I think this is ok...
5485 AC_CONFIG_FILES([$srcdir/doc/man/emacs.1])
5487 m4_define([subdir_makefiles],
5488 [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])
5489 SUBDIR_MAKEFILES="subdir_makefiles"
5490 AC_CONFIG_FILES(subdir_makefiles)
5492 dnl test/ is not present in release tarfiles.
5493 opt_makefile=test/Makefile
5495 if test -f "$srcdir/$opt_makefile.in"; then
5496 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
5497 dnl Again, it's best not to use a variable. Though you can add
5498 dnl ", [], [opt_makefile='$opt_makefile']" and it should work.
5499 AC_CONFIG_FILES([test/Makefile])
5503 dnl The admin/ directory used to be excluded from tarfiles.
5504 if test -d $srcdir/admin; then
5505 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES admin/charsets/Makefile admin/unidata/Makefile admin/grammars/Makefile"
5506 AC_CONFIG_FILES([admin/charsets/Makefile])
5507 AC_CONFIG_FILES([admin/unidata/Makefile])
5508 AC_CONFIG_FILES([admin/grammars/Makefile])
5512 SUBDIR_MAKEFILES_IN=`echo " ${SUBDIR_MAKEFILES}" | sed -e 's| | $(srcdir)/|g' -e 's|Makefile|Makefile.in|g'`
5514 AC_SUBST(SUBDIR_MAKEFILES_IN)
5516 dnl You might wonder (I did) why epaths.h is generated by running make,
5517 dnl rather than just letting configure generate it from epaths.in.
5518 dnl One reason is that the various paths are not fully expanded (see above);
5519 dnl e.g., gamedir='${localstatedir}/games/emacs'.
5520 dnl Secondly, the GNU Coding standards require that one should be able
5521 dnl to run 'make prefix=/some/where/else' and override the values set
5522 dnl by configure. This also explains the 'move-if-change' test and
5523 dnl the use of force in the 'epaths-force' rule in Makefile.in.
5524 AC_CONFIG_COMMANDS([src/epaths.h], [
5525 if test "${opsys}" = "mingw32"; then
5526 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force-w32
5528 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force
5529 fi || AC_MSG_ERROR(['src/epaths.h' could not be made.])
5530 ], [GCC="$GCC" CPPFLAGS="$CPPFLAGS" opsys="$opsys"])
5532 dnl NB we have to cheat and use the ac_... version because abs_top_srcdir
5533 dnl is not yet set, sigh. Or we could use ../$srcdir/src/.gdbinit,
5535 AC_CONFIG_COMMANDS([src/.gdbinit], [
5536 if test ! -f src/.gdbinit && test -f "$srcdir/src/.gdbinit"; then
5537 AS_ECHO(["source $ac_abs_top_srcdir/src/.gdbinit"]) > src/.gdbinit
5541 dnl Perhaps this would be better named doc-emacs-emacsver.texi?
5542 dnl See comments for etc-refcards-emacsver.tex.
5543 dnl Since we get a doc/emacs directory generated anyway, for the Makefile,
5544 dnl it is not quite the same. But we are generating in $srcdir.
5545 AC_CONFIG_COMMANDS([doc/emacs/emacsver.texi], [
5546 ${MAKE-make} -s --no-print-directory -C doc/emacs doc-emacsver || \
5547 AC_MSG_ERROR(['doc/emacs/emacsver.texi' could not be made.])
5550 dnl If we give this the more natural name, etc/refcards/emacsver.texi,
5551 dnl then a directory etc/refcards is created in the build directory,
5552 dnl which is probably harmless, but confusing (in out-of-tree builds).
5553 dnl (If we were to generate etc/refcards/Makefile, this might change.)
5554 dnl It is really $srcdir/etc/refcards/emacsver.tex that we generate.
5555 AC_CONFIG_COMMANDS([etc-refcards-emacsver.tex], [
5556 ${MAKE-make} -s MAKEFILE_NAME=do-not-make-Makefile etc-emacsver || \
5557 AC_MSG_ERROR(['etc/refcards/emacsver.tex' could not be made.])
5560 if test $AUTO_DEPEND = yes; then
5561 for dir in $AUTODEPEND_PARENTS; do
5562 AS_MKDIR_P([$dir/deps])
5568 if test ! "$with_mailutils"; then
5569 if test "$with_pop" = yes; then
5570 AC_MSG_WARN([This configuration installs a 'movemail' program
5571 that retrieves POP3 email via only insecure channels.
5572 To omit insecure POP3, you can use '$0 --without-pop'.])
5573 elif test "$with_pop" = no-by-default; then
5574 AC_MSG_WARN([This configuration installs a 'movemail' program
5575 that does not retrieve POP3 email. By default, Emacs 25 and earlier
5576 installed a 'movemail' program that retrieved POP3 email via only
5577 insecure channels, a practice that is no longer recommended but that
5578 you can continue to support by using '$0 --with-pop'.])
5583 # Don't suggest GNU Mailutils, as it hasn't been ported.
5586 emacs_fix_movemail="use '$0 --with-mailutils'"
5587 case `(movemail --version) 2>/dev/null` in
5589 *) emacs_fix_movemail="install GNU Mailutils
5590 <https://mailutils.org> and $emacs_fix_movemail";;
5592 AC_MSG_NOTICE([You might want to $emacs_fix_movemail.]);;
5596 test "$MAKE" = make || AC_MSG_NOTICE([Now you can run '$MAKE'.])