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, 26.0.50, 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 # FIXME: The default options '--without-mailutils --with-pop' result
236 # in a movemail implementation that supports only unencrypted POP3
237 # connections. Encrypted connections should be the 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 "$with_mailutils" = no; then
252 AC_SUBST([with_mailutils])
254 OPTION_DEFAULT_ON([pop],
255 [don't support POP mail retrieval with movemail (--without-pop or
256 --with-mailutils is recommended, as movemail POP is insecure)])
257 if test "$with_pop" = yes; then
258 AC_DEFINE(MAIL_USE_POP)
260 AH_TEMPLATE(MAIL_USE_POP, [Define to support POP mail retrieval.])dnl
262 OPTION_DEFAULT_OFF([kerberos],[support Kerberos-authenticated POP])
263 if test "$with_kerberos" != no; then
266 AH_TEMPLATE(KERBEROS,
267 [Define to support Kerberos-authenticated POP mail retrieval.])dnl
269 OPTION_DEFAULT_OFF([kerberos5],[support Kerberos version 5 authenticated POP])
270 if test "${with_kerberos5}" != no; then
271 if test "${with_kerberos}" = no; then
275 AC_DEFINE(KERBEROS5, 1, [Define to use Kerberos 5 instead of Kerberos 4.])
278 OPTION_DEFAULT_OFF([hesiod],[support Hesiod to get the POP server host])
279 dnl FIXME hesiod support may not be present, so it seems like an error
280 dnl to define, or at least use, this unconditionally.
281 if test "$with_hesiod" != no; then
282 AC_DEFINE(HESIOD, 1, [Define to support using a Hesiod database to find the POP server.])
285 OPTION_DEFAULT_OFF([mail-unlink],[unlink, rather than empty, mail spool after reading])
286 if test "$with_mail_unlink" != no; then
287 AC_DEFINE(MAIL_UNLINK_SPOOL, 1, [Define to unlink, rather than empty, mail spool after reading.])
290 AC_ARG_WITH([mailhost],[AS_HELP_STRING([--with-mailhost=HOSTNAME],
291 [string giving default POP mail host])],
292 AC_DEFINE_UNQUOTED(MAILHOST, ["$withval"], [String giving fallback POP mail host.]))
294 AC_ARG_WITH([sound],[AS_HELP_STRING([--with-sound=VALUE],
295 [compile with sound support (VALUE one of: yes, alsa, oss, bsd-ossaudio, no;
296 default yes). Only for GNU/Linux, FreeBSD, NetBSD, MinGW, Cygwin.])],
297 [ case "${withval}" in
298 yes|no|alsa|oss|bsd-ossaudio) val=$withval ;;
299 *) AC_MSG_ERROR(['--with-sound=$withval' is invalid;
300 this option's value should be 'yes', 'no', 'alsa', 'oss', or 'bsd-ossaudio'.])
305 [with_sound=$with_features])
307 dnl FIXME currently it is not the last.
308 dnl This should be the last --with option, because --with-x is
309 dnl added later on when we find the file name of X, and it's best to
310 dnl keep them together visually.
311 AC_ARG_WITH([x-toolkit],[AS_HELP_STRING([--with-x-toolkit=KIT],
312 [use an X toolkit (KIT one of: yes or gtk, gtk2, gtk3, lucid or athena, motif, no)])],
313 [ case "${withval}" in
314 y | ye | yes ) val=gtk ;;
316 l | lu | luc | luci | lucid ) val=lucid ;;
317 a | at | ath | athe | athen | athena ) val=athena ;;
318 m | mo | mot | moti | motif ) val=motif ;;
319 g | gt | gtk ) val=gtk ;;
323 AC_MSG_ERROR(['--with-x-toolkit=$withval' is invalid;
324 this option's value should be 'yes', 'no', 'lucid', 'athena', 'motif', 'gtk',
325 'gtk2' or 'gtk3'. 'yes' and 'gtk' are synonyms.
326 'athena' and 'lucid' are synonyms.])
332 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])
333 if test "$with_wide_int" = yes; then
334 AC_DEFINE([WIDE_EMACS_INT], 1, [Use long long for EMACS_INT if available.])
337 dnl _ON results in a '--without' option in the --help output, so
338 dnl the help text should refer to "don't compile", etc.
339 with_xpm_set=${with_xpm+set}
340 OPTION_DEFAULT_ON([xpm],[don't compile with XPM image support])
341 OPTION_DEFAULT_ON([jpeg],[don't compile with JPEG image support])
342 OPTION_DEFAULT_ON([tiff],[don't compile with TIFF image support])
343 OPTION_DEFAULT_ON([gif],[don't compile with GIF image support])
344 OPTION_DEFAULT_ON([png],[don't compile with PNG image support])
345 OPTION_DEFAULT_ON([rsvg],[don't compile with SVG image support])
346 OPTION_DEFAULT_ON([libsystemd],[don't compile with libsystemd support])
347 OPTION_DEFAULT_OFF([cairo],[compile with Cairo drawing (experimental)])
348 OPTION_DEFAULT_ON([xml2],[don't compile with XML parsing support])
349 OPTION_DEFAULT_ON([imagemagick],[don't compile with ImageMagick image support])
351 OPTION_DEFAULT_ON([xft],[don't use XFT for anti aliased fonts])
352 OPTION_DEFAULT_ON([libotf],[don't use libotf for OpenType font support])
353 OPTION_DEFAULT_ON([m17n-flt],[don't use m17n-flt for text shaping])
355 OPTION_DEFAULT_ON([toolkit-scroll-bars],[don't use Motif or Xaw3d scroll bars])
356 OPTION_DEFAULT_ON([xaw3d],[don't use Xaw3d])
357 OPTION_DEFAULT_ON([xim],[don't use X11 XIM])
358 AC_ARG_WITH([ns],[AS_HELP_STRING([--with-ns],
359 [use Nextstep (macOS Cocoa or GNUstep) windowing system.
360 On by default on macOS.])],[],[with_ns=maybe])
361 OPTION_DEFAULT_OFF([w32], [use native MS Windows GUI in a Cygwin build])
363 OPTION_DEFAULT_ON([gpm],[don't use -lgpm for mouse support on a GNU/Linux console])
364 OPTION_DEFAULT_ON([dbus],[don't compile with D-Bus support])
365 AC_ARG_WITH([gconf],[AS_HELP_STRING([--with-gconf],
366 [compile with Gconf support (Gsettings replaces this)])],[],[with_gconf=maybe])
367 OPTION_DEFAULT_ON([gsettings],[don't compile with GSettings support])
368 OPTION_DEFAULT_ON([selinux],[don't compile with SELinux support])
369 OPTION_DEFAULT_ON([gnutls],[don't use -lgnutls for SSL/TLS support])
370 OPTION_DEFAULT_ON([zlib],[don't compile with zlib decompression support])
371 OPTION_DEFAULT_OFF([modules],[compile with dynamic modules support])
372 OPTION_DEFAULT_ON([threads],[don't compile with elisp threading support])
374 AC_ARG_WITH([file-notification],[AS_HELP_STRING([--with-file-notification=LIB],
375 [use a file notification library (LIB one of: yes, inotify, kqueue, gfile, w32, no)])],
376 [ case "${withval}" in
377 y | ye | yes ) val=yes ;;
379 i | in | ino | inot | inoti | inotif | inotify ) val=inotify ;;
380 k | kq | kqu | kque | kqueu | kqueue ) val=kqueue ;;
381 g | gf | gfi | gfil | gfile ) val=gfile ;;
382 w | w3 | w32 ) val=w32 ;;
383 * ) AC_MSG_ERROR(['--with-file-notification=$withval' is invalid;
384 this option's value should be 'yes', 'no', 'inotify', 'kqueue', 'gfile' or 'w32'.
385 'yes' is a synonym for 'w32' on MS-Windows, for 'no' on Nextstep,
386 otherwise for the first of 'inotify', 'kqueue' or 'gfile' that is usable.])
389 with_file_notification=$val
391 [with_file_notification=$with_features])
393 OPTION_DEFAULT_OFF([xwidgets],
394 [enable use of some gtk widgets in Emacs buffers (requires gtk3)])
396 ## For the times when you want to build Emacs but don't have
397 ## a suitable makeinfo, and can live without the manuals.
398 dnl http://lists.gnu.org/archive/html/emacs-devel/2008-04/msg01844.html
399 OPTION_DEFAULT_ON([makeinfo],[don't require makeinfo for building manuals])
401 ## Makefile.in needs the cache file name.
404 ## This is an option because I do not know if all info/man support
405 ## compressed files, nor how to test if they do so.
406 OPTION_DEFAULT_ON([compress-install],
407 [don't compress some files (.el, .info, etc.) when installing. Equivalent to:
408 make GZIP_PROG= install])
410 AC_ARG_WITH(gameuser,dnl
411 [AS_HELP_STRING([--with-gameuser=USER_OR_GROUP],
412 [user for shared game score files.
413 An argument prefixed by ':' specifies a group instead.])])
416 case ${with_gameuser} in
418 yes) gamegroup=games ;;
419 :*) gamegroup=${with_gameuser#:} ;;
420 *) gameuser=${with_gameuser} ;;
423 AC_ARG_WITH([gnustep-conf],dnl
424 [AS_HELP_STRING([--with-gnustep-conf=FILENAME],
425 [name of GNUstep configuration file to use on systems where the command
426 'gnustep-config' does not work; default $GNUSTEP_CONFIG_FILE, or
427 /etc/GNUstep/GNUstep.conf])])
428 test "X${with_gnustep_conf}" != X && test "${with_gnustep_conf}" != yes && \
429 GNUSTEP_CONFIG_FILE="${with_gnustep_conf}"
430 test "X$GNUSTEP_CONFIG_FILE" = "X" && \
431 GNUSTEP_CONFIG_FILE=/etc/GNUstep/GNUstep.conf
433 AC_ARG_ENABLE(ns-self-contained,
434 [AS_HELP_STRING([--disable-ns-self-contained],
435 [disable self contained build under NeXTstep])],
436 EN_NS_SELF_CONTAINED=$enableval,
437 EN_NS_SELF_CONTAINED=yes)
440 AC_ARG_ENABLE(locallisppath,
441 [AS_HELP_STRING([--enable-locallisppath=PATH],
442 [directories Emacs should search for lisp files specific
444 if test "${enableval}" = "no"; then
446 elif test "${enableval}" != "yes"; then
447 locallisppath=${enableval} locallisppathset=yes
450 AC_ARG_ENABLE(checking,
451 [AS_HELP_STRING([--enable-checking@<:@=LIST@:>@],
452 [enable expensive run-time checks. With LIST,
453 enable only specific categories of checks.
454 Categories are: all,yes,no.
455 Flags are: stringbytes, stringoverrun, stringfreelist,
456 xmallocoverrun, conslist, glyphs])],
457 [ac_checking_flags="${enableval}"],[])
458 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
459 for check in $ac_checking_flags
462 # these set all the flags to specific states
463 yes) ac_enable_checking=1 ;;
464 no) ac_enable_checking= ;
465 ac_gc_check_stringbytes= ;
466 ac_gc_check_string_overrun= ;
467 ac_gc_check_string_free_list= ;
468 ac_xmalloc_overrun= ;
469 ac_gc_check_cons_list= ;
471 all) ac_enable_checking=1 ;
472 ac_gc_check_stringbytes=1 ;
473 ac_gc_check_string_overrun=1 ;
474 ac_gc_check_string_free_list=1 ;
475 ac_xmalloc_overrun=1 ;
476 ac_gc_check_cons_list=1 ;
478 # these enable particular checks
479 stringbytes) ac_gc_check_stringbytes=1 ;;
480 stringoverrun) ac_gc_check_string_overrun=1 ;;
481 stringfreelist) ac_gc_check_string_free_list=1 ;;
482 xmallocoverrun) ac_xmalloc_overrun=1 ;;
483 conslist) ac_gc_check_cons_list=1 ;;
484 glyphs) ac_glyphs_debug=1 ;;
485 *) AC_MSG_ERROR(unknown check category $check) ;;
490 if test x$ac_enable_checking != x ; then
491 AC_DEFINE(ENABLE_CHECKING, 1,
492 [Define to 1 if expensive run-time data type and consistency checks are enabled.])
494 if test x$ac_gc_check_stringbytes != x ; then
495 AC_DEFINE(GC_CHECK_STRING_BYTES, 1,
496 [Define this temporarily to hunt a bug. If defined, the size of
497 strings is redundantly recorded in sdata structures so that it can
498 be compared to the sizes recorded in Lisp strings.])
500 if test x$ac_gc_check_string_overrun != x ; then
501 AC_DEFINE(GC_CHECK_STRING_OVERRUN, 1,
502 [Define this to check for short string overrun.])
504 if test x$ac_gc_check_string_free_list != x ; then
505 AC_DEFINE(GC_CHECK_STRING_FREE_LIST, 1,
506 [Define this to check the string free list.])
508 if test x$ac_xmalloc_overrun != x ; then
509 AC_DEFINE(XMALLOC_OVERRUN_CHECK, 1,
510 [Define this to check for malloc buffer overrun.])
512 if test x$ac_gc_check_cons_list != x ; then
513 AC_DEFINE(GC_CHECK_CONS_LIST, 1,
514 [Define this to check for errors in cons list.])
516 if test x$ac_glyphs_debug != x ; then
517 AC_DEFINE(GLYPH_DEBUG, 1,
518 [Define this to enable glyphs debugging code.])
521 dnl The name of this option is unfortunate. It predates, and has no
522 dnl relation to, the "sampling-based elisp profiler" added in 24.3.
523 dnl Actually, it stops it working.
524 dnl http://lists.gnu.org/archive/html/emacs-devel/2012-11/msg00393.html
525 AC_ARG_ENABLE(profiling,
526 [AS_HELP_STRING([--enable-profiling],
527 [build emacs with low-level, gprof profiling support.
528 Mainly useful for debugging Emacs itself. May not work on
529 all platforms. Stops profiler.el working.])],
530 [ac_enable_profiling="${enableval}"],[])
531 if test x$ac_enable_profiling != x ; then
532 PROFILING_CFLAGS="-DPROFILING=1 -pg"
536 AC_SUBST(PROFILING_CFLAGS)
538 AC_ARG_ENABLE(autodepend,
539 [AS_HELP_STRING([--enable-autodepend],
540 [automatically generate dependencies to .h-files.
541 Requires gcc, enabled if found.])],
542 [ac_enable_autodepend="${enableval}"],[ac_enable_autodepend=yes])
544 AC_ARG_ENABLE(gtk-deprecation-warnings,
545 [AS_HELP_STRING([--enable-gtk-deprecation-warnings],
546 [Show Gtk+/Gdk deprecation warnings for Gtk+ >= 3.0])],
547 [ac_enable_gtk_deprecation_warnings="${enableval}"],[])
550 AC_ARG_ENABLE([build-details],
551 [AS_HELP_STRING([--disable-build-details],
552 [Make the build more deterministic by omitting host
553 names, time stamps, etc. from the output.])],
554 [test "$enableval" = no && BUILD_DETAILS=--no-build-details])
555 AC_SUBST([BUILD_DETAILS])
557 dnl This used to use changequote, but, apart from 'changequote is evil'
558 dnl per the autoconf manual, we can speed up autoconf somewhat by quoting
559 dnl the great gob of text. Thus it's not processed for possible expansion.
560 dnl Just make sure the brackets remain balanced.
562 dnl Since Emacs can't find matching pairs of quotes, boundaries are
563 dnl indicated by comments.
567 ### If you add support for a new configuration, add code to this
568 ### switch statement to recognize your configuration name and select
569 ### the appropriate opsys.
571 ### As far as handling version numbers on operating systems is
572 ### concerned, make sure things will fail in a fixable way. If
573 ### /etc/MACHINES doesn't say anything about version numbers, be
574 ### prepared to handle anything reasonably. If version numbers
575 ### matter, be sure /etc/MACHINES says something about it.
578 case "${canonical}" in
580 ## GNU/Linux and similar ports
595 ## FreeBSD kernel + glibc based userland
606 *-*-openbsd* | *-*-mirbsd* )
610 ## Apple Darwin / macOS
612 case "${canonical}" in
613 *-apple-darwin[0-9].*) unported=yes ;;
614 i[3456]86-* | x86_64-* ) ;;
618 ## FIXME: Find a way to use Fink if available (Bug#11507).
621 ## Chromium Native Client
631 ## HP 9000 series 700 and 800, running HP/UX
635 hppa*-hp-hpux1[1-9]* )
637 CFLAGS="-D_INCLUDE__STDC_A1_SOURCE $CFLAGS"
641 rs6000-ibm-aix4.[23]* )
644 powerpc-ibm-aix4.[23]* )
647 rs6000-ibm-aix[56]* )
650 powerpc-ibm-aix[5-9]* | powerpc-ibm-aix[1-9][0-9]* )
656 | i[3456]86-*-solaris2* | i[3456]86-*-sunos5* \
657 | x86_64-*-solaris2* | x86_64-*-sunos5*)
658 case "${canonical}" in
660 amd64-*-*|x86_64-*-*) ;;
664 case "${canonical}" in
665 *-sunos5.[1-9][0-9]* | *-solaris2.[1-9][0-9]* )
667 emacs_check_sunpro_c=yes
669 *-sunos5.[1-5]* | *-solaris2.[1-5]* ) unported=yes ;;
670 ## Note that Emacs 23.1's NEWS said the following would be dropped.
671 *-sunos5.6* | *-solaris2.6* )
675 ## 5.7 EOL Aug 2008, 5.8 EOL Mar 2012.
676 *-sunos5.[7-9]* | *-solaris2.[7-9]* )
678 emacs_check_sunpro_c=yes
681 ## Watch out for a compiler that we know will not work.
682 case "${canonical}" in
683 *-solaris* | *-sunos5* )
684 if [ "x$CC" = x/usr/ucb/cc ]; then
685 ## /usr/ucb/cc doesn't work;
686 ## we should find some other compiler that does work.
694 ## Intel 386 machines where we don't care about the manufacturer.
696 case "${canonical}" in
697 *-darwin* ) opsys=darwin ;;
700 # MinGW overrides and adds some system headers in nt/inc.
701 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
703 *-sysv4.2uw* ) opsys=unixware ;;
704 *-sysv5uw* ) opsys=unixware ;;
705 *-sysv5OpenUNIX* ) opsys=unixware ;;
706 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
712 case "${canonical}" in
715 # MinGW overrides and adds some system headers in nt/inc.
716 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
718 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
727 ### If the code above didn't choose an operating system, just choose
728 ### an operating system based on the configuration name. You really
729 ### only want to use this when you have no idea what the right
730 ### operating system is; if you know what operating systems a machine
731 ### runs, it's cleaner to make it explicit in the case statement
733 if test x"${opsys}" = x; then
734 case "${canonical}" in
735 *-gnu* ) opsys=gnu ;;
745 if test $unported = yes; then
746 AC_MSG_ERROR([Emacs does not support '${canonical}' systems.
747 If you think it should, please send a report to ${PACKAGE_BUGREPORT}.
748 Check 'etc/MACHINES' for recognized configuration names.])
751 #### Choose a compiler.
753 dnl Don't bother to test for C89.
754 AC_DEFUN([_AC_PROG_CC_C89], [$2])
756 dnl Sets GCC=yes if using gcc.
757 AC_PROG_CC([gcc cc cl clang "$XCRUN gcc" "$XCRUN clang"])
758 if test -n "$XCRUN"; then
759 AC_CHECK_PROGS(AR, [ar "$XCRUN ar"])
760 test -n "$AR" && export AR
763 dnl Emacs needs C99 or later.
768 if test x$GCC = xyes; then
769 test "x$GCC_TEST_OPTIONS" != x && CC="$CC $GCC_TEST_OPTIONS"
772 # Avoid gnulib's tests for -lcrypto, so that there's no static dependency on it.
773 AC_DEFUN([gl_CRYPTO_CHECK])
774 # Avoid gnulib's tests for HAVE_WORKING_O_NOATIME and HAVE_WORKING_O_NOFOLLOW,
775 # as we don't use them.
776 AC_DEFUN([gl_FCNTL_O_FLAGS])
777 # Avoid gnulib's test for pthread_sigmask.
779 for func in $ac_func_list; do
780 test $func = pthread_sigmask || AS_VAR_APPEND([funcs], [" $func"])
783 # Use the system putenv even if it lacks GNU features, as we don't need them,
784 # and the gnulib replacement runs afoul of a FreeBSD 10.1 bug; see Bug#19874.
785 AC_CHECK_FUNCS_ONCE([putenv])
786 AC_DEFUN([gl_FUNC_PUTENV],
787 [test "$ac_cv_func_putenv" = yes || REPLACE_PUTENV=1])
788 # Emacs does not use the wchar or wctype-h modules.
789 AC_DEFUN([gt_TYPE_WINT_T],
790 [GNULIB_OVERRIDES_WINT_T=0
791 AC_SUBST([GNULIB_OVERRIDES_WINT_T])])
793 # Initialize gnulib right after choosing the compiler.
794 dnl Amongst other things, this sets AR and ARFLAGS.
797 if test "$ac_test_CFLAGS" != set; then
798 # It's helpful to have C macros available to GDB, so prefer -g3 to -g
799 # if -g3 works and the user does not specify CFLAGS.
800 # This test must follow gl_EARLY; otherwise AC_LINK_IFELSE complains.
803 emacs_g3_CFLAGS='-g3';;
805 emacs_g3_CFLAGS='-g3 -O2';;
809 if test -n "$emacs_g3_CFLAGS"; then
810 emacs_save_CFLAGS=$CFLAGS
811 CFLAGS=$emacs_g3_CFLAGS
812 AC_CACHE_CHECK([whether $CC accepts $emacs_g3_CFLAGS],
813 [emacs_cv_prog_cc_g3],
814 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
815 [emacs_cv_prog_cc_g3=yes],
816 [emacs_cv_prog_cc_g3=no])])
817 if test $emacs_cv_prog_cc_g3 != yes; then
818 CFLAGS=$emacs_save_CFLAGS
820 if test $opsys = mingw32; then
821 CFLAGS="$CFLAGS -gdwarf-2"
828 # No optimization flag was inferred for this non-GCC compiler.
829 # Try -O. This is needed for xlc on AIX; see Bug#14258.
830 emacs_save_CFLAGS=$CFLAGS
831 test -z "$CFLAGS" || CFLAGS="$CFLAGS "
833 AC_CACHE_CHECK([whether $CC accepts -O],
834 [emacs_cv_prog_cc_o],
835 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
836 [emacs_cv_prog_cc_o=yes],
837 [emacs_cv_prog_cc_o=no])])
838 if test $emacs_cv_prog_cc_o != yes; then
839 CFLAGS=$emacs_save_CFLAGS
844 # gl_GCC_VERSION_IFELSE([major], [minor], [run-if-found], [run-if-not-found])
845 # ---------------------------------------------------------------------------
846 # If $CPP is gcc-MAJOR.MINOR or newer, then run RUN-IF-FOUND.
847 # Otherwise, run RUN-IF-NOT-FOUND.
848 AC_DEFUN([gl_GCC_VERSION_IFELSE],
852 #if ($1) < __GNUC__ || (($1) == __GNUC__ && ($2) <= __GNUC_MINOR__)
855 # error "your version of gcc is older than $1.$2"
862 AC_ARG_ENABLE([gcc-warnings],
863 [AS_HELP_STRING([--enable-gcc-warnings@<:@=TYPE@:>@],
864 [control generation of GCC warnings. The TYPE 'yes'
865 means to fail if any warnings are issued; 'warn-only'
866 means issue warnings without failing (default for
867 developer builds); 'no' means disable warnings
868 (default for non-developer builds).])],
871 *) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
873 gl_gcc_warnings=$enableval],
874 [# By default, use 'warn-only' if it looks like the invoker of 'configure'
875 # is a developer as opposed to a builder. This is most likely true
876 # if GCC is recent enough and there is a .git directory or file;
877 # however, if there is also a .tarball-version file it is probably
878 # just a release imported into Git for patch management.
880 if test -e "$srcdir"/.git && test ! -f "$srcdir"/.tarball-version; then
881 gl_GCC_VERSION_IFELSE([5], [3], [gl_gcc_warnings=warn-only])
884 AC_ARG_ENABLE([check-lisp-object-type],
885 [AS_HELP_STRING([--enable-check-lisp-object-type],
886 [Enable compile-time checks for the Lisp_Object data type,
887 which can catch some bugs during development.
888 The default is "no" if --enable-gcc-warnings is "no".])])
889 if test "${enable_check_lisp_object_type-$gl_gcc_warnings}" != "no"; then
890 AC_DEFINE([CHECK_LISP_OBJECT_TYPE], 1,
891 [Define to enable compile-time checks for the Lisp_Object data type.])
894 # clang is unduly picky about some things.
895 AC_CACHE_CHECK([whether the compiler is clang], [emacs_cv_clang],
902 [emacs_cv_clang=yes],
903 [emacs_cv_clang=no])])
906 # When compiling with GCC, prefer -isystem to -I when including system
907 # include files, to avoid generating useless diagnostics for the files.
908 AS_IF([test $gl_gcc_warnings = no],
911 AS_IF([test "$emacs_cv_clang" = yes],
913 # Turn off some warnings if supported.
914 gl_WARN_ADD([-Wno-switch])
915 gl_WARN_ADD([-Wno-pointer-sign])
916 gl_WARN_ADD([-Wno-string-plus-int])
917 gl_WARN_ADD([-Wno-unknown-attributes])
922 # This, $nw, is the list of warnings we disable.
925 case $with_x_toolkit in
926 lucid | athena | motif)
927 # Old toolkits mishandle 'const'.
928 nw="$nw -Wwrite-strings"
931 AS_IF([test $gl_gcc_warnings = yes],
932 [WERROR_CFLAGS=-Werror])
934 nw="$nw -Wduplicated-branches" # Too many false alarms
935 nw="$nw -Wformat-overflow=2" # False alarms due to GCC bug 80776
936 nw="$nw -Wsystem-headers" # Don't let system headers trigger warnings
937 nw="$nw -Woverlength-strings" # Not a problem these days
938 nw="$nw -Wformat-nonliteral" # we do this a lot
939 nw="$nw -Wvla" # Emacs uses <vla.h>.
940 nw="$nw -Wswitch-default" # Too many warnings for now
941 nw="$nw -Wunused-const-variable=2" # lisp.h declares const objects.
942 nw="$nw -Winline" # OK to ignore 'inline'
943 nw="$nw -Wstrict-overflow" # OK to optimize assuming that
944 # signed overflow has undefined behavior
945 nw="$nw -Wsync-nand" # irrelevant here, and provokes ObjC warning
946 nw="$nw -Wunsafe-loop-optimizations" # OK to suppress unsafe optimizations
947 nw="$nw -Wbad-function-cast" # These casts are no worse than others.
949 # Emacs doesn't care about shadowing; see
950 # <http://lists.gnu.org/archive/html/emacs-diffs/2011-11/msg00265.html>.
953 # Emacs's use of alloca inhibits protecting the stack.
954 nw="$nw -Wstack-protector"
956 # Emacs's use of partly-const functions such as Fgnutls_available_p
957 # make this option problematic.
958 nw="$nw -Wsuggest-attribute=const"
960 # Emacs's use of partly-pure functions such as CHECK_TYPE make this
961 # option problematic.
962 nw="$nw -Wsuggest-attribute=pure"
964 # This part is merely for shortening the command line,
965 # since -Wall implies -Wswitch.
968 # This part is merely for shortening the command line,
969 # since -Wno-FOO needs to be added below regardless.
970 nw="$nw -Wmissing-field-initializers"
971 nw="$nw -Woverride-init"
972 nw="$nw -Wtype-limits"
973 nw="$nw -Wunused-parameter"
975 if test "$emacs_cv_clang" = yes; then
976 nw="$nw -Wcast-align"
977 nw="$nw -Wdouble-promotion"
978 nw="$nw -Wmissing-braces"
981 # These cause too much noise in the MinGW build
982 if test $opsys = mingw32; then
983 nw="$nw -Wpointer-sign"
984 nw="$nw -Wsuggest-attribute=format"
987 gl_MANYWARN_ALL_GCC([ws])
988 gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
992 gl_WARN_ADD([-Wredundant-decls]) # Prefer this, as we don't use Bison.
993 gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
994 gl_WARN_ADD([-Wno-override-init]) # More trouble than it is worth
995 gl_WARN_ADD([-Wno-sign-compare]) # Too many warnings for now
996 gl_WARN_ADD([-Wno-type-limits]) # Too many warnings for now
997 gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
998 gl_WARN_ADD([-Wno-format-nonliteral])
1000 # clang is unduly picky about braces.
1001 if test "$emacs_cv_clang" = yes; then
1002 gl_WARN_ADD([-Wno-missing-braces])
1005 # This causes too much noise in the MinGW build
1006 if test $opsys = mingw32; then
1007 gl_WARN_ADD([-Wno-pointer-sign])
1010 AC_DEFINE([GCC_LINT], [1], [Define to 1 if --enable-gcc-warnings.])
1011 AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
1012 AH_VERBATIM([GNULIB_PORTCHECK_FORTIFY_SOURCE],
1013 [/* Enable compile-time and run-time bounds-checking, and some warnings,
1014 without upsetting glibc 2.15+. */
1015 #if (defined GNULIB_PORTCHECK && !defined _FORTIFY_SOURCE \
1016 && defined __OPTIMIZE__ && __OPTIMIZE__)
1017 # define _FORTIFY_SOURCE 2
1022 # clang is picky about these regardless of whether
1023 # --enable-gcc-warnings is specified.
1024 if test "$emacs_cv_clang" = yes; then
1025 gl_WARN_ADD([-Wno-initializer-overrides])
1026 gl_WARN_ADD([-Wno-tautological-compare])
1027 gl_WARN_ADD([-Wno-tautological-constant-out-of-range-compare])
1030 # Use a slightly smaller set of warning options for lib/.
1032 nw="$nw -Wunused-macros"
1033 gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
1035 AC_SUBST([WERROR_CFLAGS])
1036 AC_SUBST([GNULIB_WARN_CFLAGS])
1045 AC_ARG_ENABLE(link-time-optimization,
1046 [AS_HELP_STRING([--enable-link-time-optimization],
1047 [build with link-time optimization
1048 (experimental; see INSTALL)])],
1049 if test "${enableval}" != "no"; then
1051 if test "$emacs_cv_clang" = yes; then
1052 AC_MSG_CHECKING([whether link-time optimization is supported by clang])
1053 GOLD_PLUGIN=`$CC -print-file-name=LLVMgold.so 2>/dev/null`
1054 if test -x "$GOLD_PLUGIN"; then
1057 elif test x$GCC = xyes; then
1058 AC_MSG_CHECKING([whether link-time optimization is supported by gcc])
1059 CPUS=`getconf _NPROCESSORS_ONLN 2>/dev/null`
1060 if test x$CPUS != x; then
1066 AC_MSG_ERROR([Link-time optimization is not supported with your compiler.])
1068 if test -z "$LTO"; then
1072 CFLAGS="$CFLAGS $LTO"
1073 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1074 [ac_lto_supported=yes], [ac_lto_supported=no])
1075 CFLAGS="$old_CFLAGS"
1077 AC_MSG_RESULT([$ac_lto_supported])
1078 if test "$ac_lto_supported" = "yes"; then
1079 CFLAGS="$CFLAGS $LTO"
1080 if test "$emacs_cv_clang" = yes; then
1081 AC_MSG_WARN([Please read INSTALL before using link-time optimization with clang])
1082 # WARNING: 'ar --plugin ...' doesn't work without
1083 # command, so plugin name is appended to ARFLAGS.
1084 ARFLAGS="cru --plugin $GOLD_PLUGIN"
1085 RANLIB="$RANLIB --plugin $GOLD_PLUGIN"
1087 dnl The following is needed for GCC 4.9.0. The GCC 4.9.0 release notes
1088 dnl suggest that instead of -ffat-lto-objects we should use gcc-ar and
1089 dnl gcc-ranlib in place of ar and ranlib, but gcc-ar makes /usr/bin/ar
1090 dnl dump core on Fedora 20, so play it safe for now.
1091 gl_COMPILER_OPTION_IF([-ffat-lto-objects],
1092 [CFLAGS="$CFLAGS -ffat-lto-objects"])
1098 dnl Automake replacements.
1099 AC_DEFUN([AM_CONDITIONAL],
1103 dnl Prefer silent make output. For verbose output, use
1104 dnl 'configure --disable-silent-rules' or 'make V=1' .
1105 dnl This code is adapted from Automake.
1106 dnl Although it can be simplified now that GNU Make is assumed,
1107 dnl the simplification hasn't been done yet.
1108 AC_ARG_ENABLE([silent-rules],
1110 [--disable-silent-rules],
1111 [verbose build output (undo: "make V=0")])])
1112 if test "$enable_silent_rules" = no; then
1113 AM_DEFAULT_VERBOSITY=1
1115 AM_DEFAULT_VERBOSITY=0
1118 AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
1120 AC_SUBST([AM_DEFAULT_V])
1121 AC_SUBST([AM_DEFAULT_VERBOSITY])
1123 dnl Some other nice autoconf tests.
1125 dnl These are commented out, since gl_EARLY and/or Autoconf already does them.
1127 dnl if test "x$RANLIB" = x; then
1132 dnl Sadly, AC_PROG_LN_S is too restrictive. It also tests whether links
1133 dnl can be made to directories. This is not relevant for our usage, and
1134 dnl excludes some cases that work fine for us. Eg MS Windows or files
1135 dnl hosted on AFS, both examples where simple links work, but links to
1136 dnl directories fail. We use a cut-down version instead.
1139 AC_CACHE_CHECK([command to symlink files in the same directory], [emacs_cv_ln_s_fileonly],
1140 [rm -f conf$$ conf$$.file
1142 emacs_cv_ln_s_fileonly='cp -p'
1144 dnl On MinGW, ensure we will call the MSYS /bin/ln.exe, not some
1145 dnl random program in the current directory.
1146 if (echo >conf$$.file) 2>/dev/null; then
1147 if ln -s conf$$.file conf$$ 2>/dev/null; then
1148 if test "$opsys" = "mingw32"; then
1149 emacs_cv_ln_s_fileonly='/bin/ln -s'
1151 emacs_cv_ln_s_fileonly='ln -s'
1153 elif ln conf$$.file conf$$ 2>/dev/null; then
1154 if test "$opsys" = "mingw32"; then
1155 emacs_cv_ln_s_fileonly=/bin/ln
1157 emacs_cv_ln_s_fileonly=ln
1162 rm -f conf$$ conf$$.file])
1163 LN_S_FILEONLY=$emacs_cv_ln_s_fileonly
1165 AC_SUBST(LN_S_FILEONLY)
1168 dnl AC_PROG_LN_S sets LN_S to 'cp -pR' for MinGW, on the premise that 'ln'
1169 dnl doesn't support links to directories, as in "ln file dir". But that
1170 dnl use is non-portable, and OTOH MinGW wants to use hard links for Emacs
1171 dnl executables at "make install" time.
1172 dnl See http://lists.gnu.org/archive/html/emacs-devel/2013-04/msg00475.html
1173 dnl for more details.
1174 if test "$opsys" = "mingw32"; then
1178 dnl On some Debian versions, "install-info" prints irritating messages
1179 dnl "This is not dpkg install-info anymore, but GNU install-info"
1180 dnl if called via an absolute file name.
1181 dnl Use the entirely-identical-but-quieter ginstall-info instead if present.
1182 dnl Sadly some people may have an old ginstall-info installed on
1183 dnl non-Debian systems, so we can't use this.
1184 dnl AC_PATH_PROGS(INSTALL_INFO, [ginstall-info install-info], :,
1185 dnl $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1187 AC_PATH_PROG(INSTALL_INFO, install-info, :,
1188 $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1189 dnl Don't use GZIP, which is used by gzip for additional parameters.
1190 AC_PATH_PROG(GZIP_PROG, gzip)
1192 test $with_compress_install != yes && test -n "$GZIP_PROG" && \
1193 GZIP_PROG=" # $GZIP_PROG # (disabled by configure --without-compress-install)"
1195 AC_CACHE_CHECK([for 'find' args to delete a file],
1196 [emacs_cv_find_delete],
1197 [if touch conftest.tmp && find conftest.tmp -delete 2>/dev/null &&
1198 test ! -f conftest.tmp
1199 then emacs_cv_find_delete="-delete"
1200 else emacs_cv_find_delete="-exec rm -f {} ';'"
1202 FIND_DELETE=$emacs_cv_find_delete
1203 AC_SUBST([FIND_DELETE])
1207 if test $opsys = gnu-linux; then
1208 if test "${SETFATTR+set}" != set; then
1209 AC_CACHE_CHECK([for setfattr],
1210 [emacs_cv_prog_setfattr],
1212 if (setfattr -n user.pax.flags conftest.tmp) >/dev/null 2>&1; then
1213 emacs_cv_prog_setfattr=yes
1215 emacs_cv_prog_setfattr=no
1217 if test "$emacs_cv_prog_setfattr" = yes; then
1218 PAXCTL_notdumped='$(SETFATTR) -n user.pax.flags -v er'
1224 AC_SUBST([SETFATTR])
1227 case $opsys,$PAXCTL_notdumped,$emacs_uname_r in
1228 gnu-linux,,* | netbsd,,[0-7].*)
1229 AC_PATH_PROG([PAXCTL], [paxctl], [],
1230 [$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR/usr/sbin])
1231 if test -n "$PAXCTL"; then
1232 if test "$opsys" = netbsd; then
1233 PAXCTL_dumped='$(PAXCTL) +a'
1234 PAXCTL_notdumped=$PAXCTL_dumped
1236 AC_MSG_CHECKING([whether binaries have a PT_PAX_FLAGS header])
1237 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1238 [if $PAXCTL -v conftest$EXEEXT >/dev/null 2>&1; then
1239 AC_MSG_RESULT([yes])
1244 if test -n "$PAXCTL"; then
1245 PAXCTL_dumped='$(PAXCTL) -zex'
1246 PAXCTL_notdumped='$(PAXCTL) -r'
1251 AC_SUBST([PAXCTL_dumped])
1252 AC_SUBST([PAXCTL_notdumped])
1254 ## Require makeinfo >= 4.13 (last of the 4.x series) to build the manuals.
1255 if test "${MAKEINFO:=makeinfo}" != "no"; then
1256 case `($MAKEINFO --version) 2>/dev/null` in
1257 *' (GNU texinfo) '4.1[[3-9]]* | \
1258 *' (GNU texinfo) '[[5-9]]* | \
1259 *' (GNU texinfo) '[[1-9][0-9]]* ) ;;
1264 ## Makeinfo is unusual. For a released Emacs, the manuals are
1265 ## pre-built, and not deleted by the normal clean rules. makeinfo is
1266 ## therefore in the category of "special tools" not normally required, which
1267 ## configure does not have to check for (eg autoconf itself).
1268 ## In a repository checkout on the other hand, the manuals are not included.
1269 ## So makeinfo is a requirement to build from the repository, and configure
1270 ## should test for it as it does for any other build requirement.
1271 ## We use the presence of $srcdir/info/emacs to distinguish a release,
1272 ## with pre-built manuals, from a repository checkout.
1275 if test "$MAKEINFO" = "no"; then
1277 if test "x${with_makeinfo}" = "xno"; then
1279 elif test ! -e "$srcdir/info/emacs" && test ! -e "$srcdir/info/emacs.info"; then
1280 AC_MSG_ERROR( [You do not seem to have makeinfo >= 4.13, and your
1281 source tree does not seem to have pre-built manuals in the 'info' directory.
1282 Either install a suitable version of makeinfo, or re-run configure
1283 with the '--without-makeinfo' option to build without the manuals.] )
1286 AC_SUBST([MAKEINFO])
1287 AC_SUBST(HAVE_MAKEINFO)
1289 if test $opsys = mingw32; then
1290 DOCMISC_W32=efaq-w32
1294 AC_SUBST(DOCMISC_W32)
1296 dnl Add our options to ac_link now, after it is set up.
1298 if test x$GCC = xyes; then
1299 test "x$GCC_LINK_TEST_OPTIONS" != x && \
1300 ac_link="$ac_link $GCC_LINK_TEST_OPTIONS"
1302 test "x$NON_GCC_LINK_TEST_OPTIONS" != x && \
1303 ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
1306 dnl We need -znocombreloc if we're using a relatively recent GNU ld.
1307 dnl If we can link with the flag, it shouldn't do any harm anyhow.
1308 dnl Treat GCC specially since it just gives a non-fatal 'unrecognized option'
1309 dnl if not built to support GNU ld.
1311 dnl For a long time, -znocombreloc was added to LDFLAGS rather than
1312 dnl LD_SWITCH_SYSTEM_TEMACS. That is:
1313 dnl * inappropriate, as LDFLAGS is a user option but this is essential.
1314 dnl Eg "make LDFLAGS=... all" could run into problems,
1315 dnl http://bugs.debian.org/684788
1316 dnl * unnecessary, since temacs is the only thing that actually needs it.
1317 dnl Indeed this is where it was originally, prior to:
1318 dnl http://lists.gnu.org/archive/html/emacs-pretest-bug/2004-03/msg00170.html
1319 if test x$GCC = xyes; then
1320 LDFLAGS_NOCOMBRELOC="-Wl,-znocombreloc"
1322 LDFLAGS_NOCOMBRELOC="-znocombreloc"
1325 AC_CACHE_CHECK([for -znocombreloc], [emacs_cv_znocombreloc],
1326 [late_LDFLAGS="$LDFLAGS"
1327 LDFLAGS="$LDFLAGS $LDFLAGS_NOCOMBRELOC"
1329 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1330 [emacs_cv_znocombreloc=yes], [emacs_cv_znocombreloc=no])
1332 LDFLAGS="$late_LDFLAGS"])
1334 if test x$emacs_cv_znocombreloc = xno; then
1335 LDFLAGS_NOCOMBRELOC=
1339 AC_CACHE_CHECK([whether addresses are sanitized],
1340 [emacs_cv_sanitize_address],
1343 [[#ifndef __has_feature
1344 #define __has_feature(f) 0
1346 #if defined __SANITIZE_ADDRESS__ || __has_feature (address_sanitizer)
1348 error "Addresses are not sanitized.";
1351 [emacs_cv_sanitize_address=yes],
1352 [emacs_cv_sanitize_address=no])])
1354 dnl The function dump-emacs will not be defined and temacs will do
1355 dnl (load "loadup") automatically unless told otherwise.
1356 test "x$CANNOT_DUMP" = "x" && CANNOT_DUMP=no
1358 nacl) CANNOT_DUMP=yes ;;
1361 if test "$CANNOT_DUMP" = "yes"; then
1362 AC_DEFINE(CANNOT_DUMP, 1, [Define if Emacs cannot be dumped on your system.])
1363 elif test "$emacs_cv_sanitize_address" = yes; then
1364 AC_MSG_WARN([[Addresses are sanitized; suggest CANNOT_DUMP=yes]])
1367 AC_SUBST(CANNOT_DUMP)
1370 UNEXEC_OBJ=unexelf.o
1372 # MSDOS uses unexcoff.o
1374 UNEXEC_OBJ=unexaix.o
1380 UNEXEC_OBJ=unexmacosx.o
1383 UNEXEC_OBJ=unexhp9k800.o
1386 UNEXEC_OBJ=unexw32.o
1389 # Use the Solaris dldump() function, called from unexsol.c, to dump
1390 # emacs, instead of the generic ELF dump code found in unexelf.c.
1391 # The resulting binary has a complete symbol table, and is better
1392 # for debugging and other observability tools (debuggers, pstack, etc).
1394 # If you encounter a problem using dldump(), please consider sending
1395 # a message to the OpenSolaris tools-linking mailing list:
1396 # http://mail.opensolaris.org/mailman/listinfo/tools-linking
1398 # It is likely that dldump() works with older Solaris too, but this has
1399 # not been tested, so for now this change is for Solaris 10 or newer.
1400 UNEXEC_OBJ=unexsol.o
1403 test "$CANNOT_DUMP" = "yes" && UNEXEC_OBJ=
1408 ## Let 'ld' find image libs and similar things in /usr/local/lib.
1409 ## The system compiler, GCC, has apparently been modified to not
1410 ## look there, contrary to what a stock GCC would do.
1411 ### It's not our place to do this. See bug#10313#17.
1412 ### LD_SWITCH_SYSTEM=-L/usr/local/lib
1417 ## cpp test was "ifdef __mips__", but presumably this is equivalent...
1418 case $host_cpu in mips*) LD_SWITCH_SYSTEM="-G 0";; esac
1422 ### It's not our place to do this. See bug#10313#17.
1423 ### LD_SWITCH_SYSTEM="-Wl,-rpath,/usr/pkg/lib -L/usr/pkg/lib -Wl,-rpath,/usr/local/lib -L/usr/local/lib"
1428 ## Han Boetes <han@boetes.org> says this is necessary,
1429 ## otherwise Emacs dumps core on elf systems.
1430 LD_SWITCH_SYSTEM="-Z"
1433 AC_SUBST(LD_SWITCH_SYSTEM)
1435 ac_link="$ac_link $LD_SWITCH_SYSTEM"
1437 ## This setting of LD_SWITCH_SYSTEM references LD_SWITCH_X_SITE_RPATH,
1438 ## which has not been defined yet. When this was handled with cpp,
1439 ## it was expanded to null when configure sourced the s/*.h file.
1440 ## Thus LD_SWITCH_SYSTEM had different values in configure and the Makefiles.
1441 ## FIXME it would be cleaner to put this in LD_SWITCH_SYSTEM_TEMACS
1442 ## (or somesuch), but because it is supposed to go at the _front_
1443 ## of LD_SWITCH_SYSTEM, we cannot do that in exactly the same way.
1444 ## Compare with the gnu-linux case below, which added to the end
1445 ## of LD_SWITCH_SYSTEM, and so can instead go at the front of
1446 ## LD_SWITCH_SYSTEM_TEMACS.
1449 LD_SWITCH_SYSTEM="\$(LD_SWITCH_X_SITE_RPATH) $LD_SWITCH_SYSTEM" ;;
1456 AC_CHECK_DECL([__ELF__])
1457 if test "$ac_cv_have_decl___ELF__" = "yes"; then
1458 ## With ELF, make sure that all common symbols get allocated to in the
1459 ## data section. Otherwise, the dump of temacs may miss variables in
1460 ## the shared library that have been initialized. For example, with
1461 ## GNU libc, __malloc_initialized would normally be resolved to the
1462 ## shared library's .bss section, which is fatal.
1463 if test "x$GCC" = "xyes"; then
1464 C_SWITCH_MACHINE="-fno-common"
1466 AC_MSG_ERROR([Non-GCC compilers are not supported.])
1469 dnl This was the unexalpha.c case. Removed in 24.1, 2010-07-24,
1470 dnl albeit under the mistaken assumption that said file
1471 dnl was no longer used.
1472 AC_MSG_ERROR([Non-ELF systems are not supported since Emacs 24.1.])
1476 AC_SUBST(C_SWITCH_MACHINE)
1478 AC_SUBST(UNEXEC_OBJ)
1481 ## Some programs in src produce warnings saying certain subprograms
1482 ## are too complex and need a MAXMEM value greater than 2000 for
1483 ## additional optimization. --nils@exp-math.uni-essen.de
1484 test "$opsys" = "aix4.2" && test "x$GCC" != "xyes" && \
1485 C_SWITCH_SYSTEM="-ma -qmaxmem=4000"
1486 if test "$opsys" = "mingw32"; then
1487 case "$canonical" in
1488 x86_64-*-mingw*) C_SWITCH_SYSTEM="-mtune=generic" ;;
1489 *) C_SWITCH_SYSTEM="-mtune=pentium4" ;;
1492 ## gnu-linux might need -D_BSD_SOURCE on old libc5 systems.
1493 ## It is redundant in glibc2, since we define _GNU_SOURCE.
1494 AC_SUBST(C_SWITCH_SYSTEM)
1499 ## IBM's X11R5 uses -lIM and -liconv in AIX 3.2.2.
1500 aix4-2) LIBS_SYSTEM="-lrts -lIM -liconv" ;;
1502 freebsd|dragonfly) LIBS_SYSTEM="-lutil" ;;
1504 hpux*) LIBS_SYSTEM="-l:libdld.sl" ;;
1506 sol2*) LIBS_SYSTEM="-lsocket -lnsl" ;;
1508 ## Motif needs -lgen.
1509 unixware) LIBS_SYSTEM="-lsocket -lnsl -lelf -lgen" ;;
1512 AC_SUBST(LIBS_SYSTEM)
1514 ### Make sure subsequent tests use flags consistent with the build flags.
1516 if test x"${OVERRIDE_CPPFLAGS}" != x; then
1517 CPPFLAGS="${OVERRIDE_CPPFLAGS}"
1519 CPPFLAGS="$C_SWITCH_SYSTEM $C_SWITCH_MACHINE $CPPFLAGS"
1522 # Suppress obsolescent Autoconf test for size_t; Emacs assumes C99 or better.
1523 AC_DEFUN([AC_TYPE_SIZE_T])
1524 # Likewise for obsolescent test for uid_t, gid_t; Emacs assumes them.
1525 AC_DEFUN([AC_TYPE_UID_T])
1527 # sqrt and other floating-point functions such as fmod and frexp
1528 # are found in -lm on many systems.
1530 AC_SEARCH_LIBS([sqrt], [m])
1531 if test "X$LIBS" = "X$OLD_LIBS"; then
1534 LIB_MATH=$ac_cv_search_sqrt
1538 dnl Current possibilities handled by sed (aix4-2 -> aix,
1539 dnl gnu-linux -> gnu/linux, etc.):
1540 dnl gnu, gnu/linux, gnu/kfreebsd, aix, cygwin, darwin, hpux.
1541 dnl And special cases: berkeley-unix, usg-unix-v, ms-dos, windows-nt.
1542 SYSTEM_TYPE=`echo $opsys | sed -e 's/[[0-9]].*//' -e 's|-|/|'`
1549 ## Adding -lm confuses the dynamic linker, so omit it.
1552 freebsd | dragonfly )
1553 SYSTEM_TYPE=berkeley-unix
1555 gnu-linux | gnu-kfreebsd )
1557 hpux10-20 | hpux11 )
1561 SYSTEM_TYPE=windows-nt
1563 dnl NB this may be adjusted below.
1565 SYSTEM_TYPE=berkeley-unix
1569 SYSTEM_TYPE=usg-unix-v
1575 AC_DEFINE_UNQUOTED(SYSTEM_TYPE, "$SYSTEM_TYPE",
1576 [The type of system you are compiling for; sets 'system-type'.])
1577 AC_SUBST([SYSTEM_TYPE])
1580 pre_PKG_CONFIG_CFLAGS=$CFLAGS
1581 pre_PKG_CONFIG_LIBS=$LIBS
1583 PKG_PROG_PKG_CONFIG(0.9.0)
1585 dnl EMACS_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4)
1586 dnl acts like PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4,
1587 dnl HAVE_GSTUFF=yes, HAVE_GSTUFF=no) -- see pkg-config man page --
1588 dnl except that it postprocesses CFLAGS as needed for --enable-gcc-warnings.
1589 dnl EMACS_CHECK_MODULES accepts optional 3rd and 4th arguments that
1590 dnl can take the place of the default HAVE_GSTUFF=yes and HAVE_GSTUFF=no
1592 AC_DEFUN([EMACS_CHECK_MODULES],
1593 [PKG_CHECK_MODULES([$1], [$2],
1594 [$1_CFLAGS=`AS_ECHO(["$$1_CFLAGS"]) | sed -e "$edit_cflags"`
1595 m4_default([$3], [HAVE_$1=yes])],
1596 [m4_default([$4], [HAVE_$1=no])])])
1599 if test "${with_sound}" != "no"; then
1600 # Sound support for GNU/Linux, the free BSDs, MinGW, and Cygwin.
1601 AC_CHECK_HEADERS([machine/soundcard.h sys/soundcard.h soundcard.h mmsystem.h],
1602 have_sound_header=yes, [], [
1604 #define WIN32_LEAN_AND_MEAN
1605 #include <windows.h>
1608 test "${with_sound}" = "oss" && test "${have_sound_header}" != "yes" && \
1609 AC_MSG_ERROR([OSS sound support requested but not found.])
1611 if test "${with_sound}" = "bsd-ossaudio" || test "${with_sound}" = "yes"; then
1612 # Emulation library used on NetBSD.
1613 AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
1614 test "${with_sound}" = "bsd-ossaudio" && test -z "$LIBSOUND" && \
1615 AC_MSG_ERROR([bsd-ossaudio sound support requested but not found.])
1616 dnl FIXME? If we did find ossaudio, should we set with_sound=bsd-ossaudio?
1617 dnl Traditionally, we go on to check for alsa too. Does that make sense?
1621 if test "${with_sound}" = "alsa" || test "${with_sound}" = "yes"; then
1623 ALSA_MODULES="alsa >= $ALSA_REQUIRED"
1624 EMACS_CHECK_MODULES([ALSA], [$ALSA_MODULES])
1625 if test $HAVE_ALSA = yes; then
1626 SAVE_CFLAGS="$CFLAGS"
1628 CFLAGS="$ALSA_CFLAGS $CFLAGS"
1629 LIBS="$ALSA_LIBS $LIBS"
1630 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <asoundlib.h>]], [[snd_lib_error_set_handler (0);]])],
1631 emacs_alsa_normal=yes,
1632 emacs_alsa_normal=no)
1633 if test "$emacs_alsa_normal" != yes; then
1634 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <alsa/asoundlib.h>]],
1635 [[snd_lib_error_set_handler (0);]])],
1636 emacs_alsa_subdir=yes,
1637 emacs_alsa_subdir=no)
1638 if test "$emacs_alsa_subdir" != yes; then
1639 AC_MSG_ERROR([pkg-config found alsa, but it does not compile. See config.log for error messages.])
1641 ALSA_CFLAGS="$ALSA_CFLAGS -DALSA_SUBDIR_INCLUDE"
1644 CFLAGS="$SAVE_CFLAGS"
1646 LIBSOUND="$LIBSOUND $ALSA_LIBS"
1647 CFLAGS_SOUND="$CFLAGS_SOUND $ALSA_CFLAGS"
1648 AC_DEFINE(HAVE_ALSA, 1, [Define to 1 if ALSA is available.])
1649 elif test "${with_sound}" = "alsa"; then
1650 AC_MSG_ERROR([ALSA sound support requested but not found.])
1652 fi dnl with_sound = alsa|yes
1654 dnl Define HAVE_SOUND if we have sound support. We know it works and
1655 dnl compiles only on the specified platforms. For others, it
1656 dnl probably doesn't make sense to try.
1657 dnl FIXME So surely we should bypass this whole section if not using
1658 dnl one of these platforms?
1659 if test x$have_sound_header = xyes || test $HAVE_ALSA = yes; then
1661 dnl defined __FreeBSD__ || defined __NetBSD__ || defined __linux__
1662 dnl Adjust the --with-sound help text if you change this.
1663 gnu-linux|freebsd|netbsd|mingw32|cygwin)
1664 AC_DEFINE(HAVE_SOUND, 1, [Define to 1 if you have sound support.])
1670 AC_SUBST(CFLAGS_SOUND)
1673 dnl checks for header files
1674 AC_CHECK_HEADERS_ONCE(
1681 sys/utsname.h pwd.h utmp.h util.h sys/prctl.h)
1683 AC_CACHE_CHECK([for ADDR_NO_RANDOMIZE],
1684 [emacs_cv_personality_addr_no_randomize],
1686 [AC_LANG_PROGRAM([[#include <sys/personality.h>]],
1687 [[personality (personality (0xffffffff)
1688 | ADDR_NO_RANDOMIZE)]])],
1689 [emacs_cv_personality_addr_no_randomize=yes],
1690 [emacs_cv_personality_addr_no_randomize=no])])
1691 if test $emacs_cv_personality_addr_no_randomize = yes; then
1692 AC_DEFINE([HAVE_PERSONALITY_ADDR_NO_RANDOMIZE], [1],
1693 [Define to 1 if personality flag ADDR_NO_RANDOMIZE exists.])
1696 # Note that Solaris has sys/sysinfo.h which defines struct
1697 # sysinfo as well. To make sure that we're using GNU/Linux
1698 # sysinfo, we explicitly set one of its fields.
1699 if test "$ac_cv_header_sys_sysinfo_h" = yes; then
1700 AC_CACHE_CHECK([if Linux sysinfo may be used], [emacs_cv_linux_sysinfo],
1701 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1702 [[struct sysinfo si;
1705 emacs_cv_linux_sysinfo=yes, emacs_cv_linux_sysinfo=no)])
1707 if test $emacs_cv_linux_sysinfo = yes; then
1708 AC_DEFINE([HAVE_LINUX_SYSINFO], 1, [Define to 1 if you have Linux sysinfo function.])
1709 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1710 [[struct sysinfo si; return si.mem_unit]])],
1711 AC_DEFINE(LINUX_SYSINFO_UNIT, 1,
1712 [Define to 1 if Linux sysinfo sizes are in multiples of mem_unit bytes.]))
1716 dnl On Solaris 8 there's a compilation warning for term.h because
1717 dnl it doesn't define 'bool'.
1718 AC_CHECK_HEADERS(term.h, , , -)
1720 AC_CHECK_DECLS([sys_siglist], [], [], [[#include <signal.h>
1722 if test $ac_cv_have_decl_sys_siglist != yes; then
1723 # For Tru64, at least:
1724 AC_CHECK_DECLS([__sys_siglist], [], [], [[#include <signal.h>
1729 AC_CHECK_HEADERS_ONCE(sys/socket.h)
1730 AC_CHECK_HEADERS(net/if.h, , , [AC_INCLUDES_DEFAULT
1731 #if HAVE_SYS_SOCKET_H
1732 #include <sys/socket.h>
1734 AC_CHECK_HEADERS(ifaddrs.h, , , [AC_INCLUDES_DEFAULT
1735 #if HAVE_SYS_SOCKET_H
1736 #include <sys/socket.h>
1738 AC_CHECK_HEADERS(net/if_dl.h, , , [AC_INCLUDES_DEFAULT
1739 #if HAVE_SYS_SOCKET_H
1740 #include <sys/socket.h>
1743 dnl checks for structure members
1744 AC_CHECK_MEMBERS([struct ifreq.ifr_flags, struct ifreq.ifr_hwaddr,
1745 struct ifreq.ifr_netmask, struct ifreq.ifr_broadaddr,
1746 struct ifreq.ifr_addr,
1747 struct ifreq.ifr_addr.sa_len], , ,
1748 [AC_INCLUDES_DEFAULT
1749 #if HAVE_SYS_SOCKET_H
1750 #include <sys/socket.h>
1756 dnl Check for endianness.
1757 dnl AC_C_BIGENDIAN is done by gnulib.
1759 dnl check for Make feature
1762 AUTODEPEND_PARENTS='lib src'
1763 dnl check if we have GCC and autodepend is on.
1764 if test "$GCC" = yes && test "$ac_enable_autodepend" = yes; then
1765 AC_CACHE_CHECK([whether gcc understands -MMD -MF], [emacs_cv_autodepend],
1766 [SAVE_CFLAGS="$CFLAGS"
1767 CFLAGS="$CFLAGS -MMD -MF deps.d -MP"
1768 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1769 [emacs_cv_autodepend=yes], [emacs_cv_autodepend=no])
1770 CFLAGS="$SAVE_CFLAGS"
1771 test -f deps.d || emacs_cv_autodepend=no
1773 if test $emacs_cv_autodepend = yes; then
1777 AC_SUBST(AUTO_DEPEND)
1779 #### Choose a window system.
1781 ## We leave window_system equal to none if
1782 ## we end up building without one. Any new window system should
1783 ## set window_system to an appropriate value and add objects to
1784 ## window-system-specific substs.
1788 if test "$no_x" != yes; then
1792 LD_SWITCH_X_SITE_RPATH=
1793 if test "${x_libraries}" != NONE; then
1794 if test -n "${x_libraries}"; then
1795 LD_SWITCH_X_SITE=-L`AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -L/g'`
1796 LD_SWITCH_X_SITE_RPATH=-Wl,-rpath,`
1797 AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -Wl,-rpath,/g'
1800 x_default_search_path=""
1801 x_search_path=${x_libraries}
1802 if test -z "${x_search_path}"; then
1803 x_search_path=/usr/lib
1805 for x_library in `AS_ECHO(["$x_search_path:"]) | \
1806 sed -e "s/:/ /g" -e p -e "s:/lib[[^ /]]* :/share :g"`; do
1808 ${x_library}/X11/%L/%T/%N%C%S:\
1809 ${x_library}/X11/%l/%T/%N%C%S:\
1810 ${x_library}/X11/%T/%N%C%S:\
1811 ${x_library}/X11/%L/%T/%N%S:\
1812 ${x_library}/X11/%l/%T/%N%S:\
1813 ${x_library}/X11/%T/%N%S"
1814 if test x"${x_default_search_path}" = x; then
1815 x_default_search_path=${x_search_path}
1817 x_default_search_path="${x_search_path}:${x_default_search_path}"
1821 AC_SUBST(LD_SWITCH_X_SITE_RPATH)
1823 if test "${x_includes}" != NONE && test -n "${x_includes}"; then
1824 C_SWITCH_X_SITE=$isystem`AS_ECHO(["$x_includes"]) | sed -e "s/:/ $isystem/g"`
1827 if test x"${x_includes}" = x; then
1828 bitmapdir=/usr/include/X11/bitmaps
1830 # accumulate include directories that have X11 bitmap subdirectories
1832 for bmd in `AS_ECHO(["$x_includes"]) | sed -e 's/:/ /g'`; do
1833 if test -d "${bmd}/X11/bitmaps"; then
1834 bmd_acc="${bmd_acc}:${bmd}/X11/bitmaps"
1836 if test -d "${bmd}/bitmaps"; then
1837 bmd_acc="${bmd_acc}:${bmd}/bitmaps"
1840 bitmapdir=${bmd_acc#:}
1843 test "${with_ns}" = maybe && test "${opsys}" != darwin && with_ns=no
1845 NS_GNUSTEP_CONFIG=no
1848 tmp_CPPFLAGS="$CPPFLAGS"
1849 tmp_CFLAGS="$CFLAGS"
1850 CPPFLAGS="$CPPFLAGS -x objective-c"
1851 CFLAGS="$CFLAGS -x objective-c"
1854 if test "${with_ns}" != no; then
1855 if test "${opsys}" = darwin; then
1857 ns_appdir=`pwd`/nextstep/Emacs.app
1858 ns_appbindir=${ns_appdir}/Contents/MacOS
1859 ns_appresdir=${ns_appdir}/Contents/Resources
1860 ns_appsrc=Cocoa/Emacs.base
1861 ns_fontfile=macfont.o
1862 elif flags=$( (gnustep-config --objc-flags) 2>/dev/null); then
1864 NS_GNUSTEP_CONFIG=yes
1865 GNU_OBJC_CFLAGS=$flags
1866 LIBS_GNUSTEP=$(gnustep-config --gui-libs) || exit
1867 elif test -f $GNUSTEP_CONFIG_FILE; then
1869 dnl FIXME sourcing this several times in subshells seems inefficient.
1870 GNUSTEP_SYSTEM_HEADERS=$(
1871 . $GNUSTEP_CONFIG_FILE
1872 AS_ECHO(["$GNUSTEP_SYSTEM_HEADERS"])
1874 GNUSTEP_SYSTEM_LIBRARIES=$(
1875 . $GNUSTEP_CONFIG_FILE
1876 AS_ECHO(["$GNUSTEP_SYSTEM_LIBRARIES"])
1878 dnl I seemed to need these as well with GNUstep-startup 0.25.
1879 GNUSTEP_LOCAL_HEADERS=$(
1880 . $GNUSTEP_CONFIG_FILE
1881 AS_ECHO(["$GNUSTEP_LOCAL_HEADERS"])
1883 GNUSTEP_LOCAL_LIBRARIES=$(
1884 . $GNUSTEP_CONFIG_FILE
1885 AS_ECHO(["$GNUSTEP_LOCAL_LIBRARIES"])
1887 test "x${GNUSTEP_LOCAL_HEADERS}" != "x" && \
1888 GNUSTEP_LOCAL_HEADERS="-I${GNUSTEP_LOCAL_HEADERS}"
1889 test "x${GNUSTEP_LOCAL_LIBRARIES}" != "x" && \
1890 GNUSTEP_LOCAL_LIBRARIES="-L${GNUSTEP_LOCAL_LIBRARIES}"
1891 CPPFLAGS="$CPPFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1892 CFLAGS="$CFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1893 LDFLAGS="$LDFLAGS -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES}"
1894 LIBS_GNUSTEP="-lgnustep-gui -lgnustep-base -lobjc -lpthread"
1895 dnl GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS to 0 or 1.
1896 dnl If they had chosen to either define it or not, we could have
1897 dnl just used AC_CHECK_DECL here.
1898 AC_CACHE_CHECK(if GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS,
1899 emacs_cv_objc_exceptions,
1900 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <GNUstepBase/GSConfig.h>]],
1901 [[#if defined BASE_NATIVE_OBJC_EXCEPTIONS && BASE_NATIVE_OBJC_EXCEPTIONS > 0
1905 #endif]])], emacs_cv_objc_exceptions=yes, emacs_cv_objc_exceptions=no ) )
1906 if test $emacs_cv_objc_exceptions = yes; then
1907 dnl _NATIVE_OBJC_EXCEPTIONS is used by the GNUstep headers.
1908 AC_DEFINE(_NATIVE_OBJC_EXCEPTIONS, 1,
1909 [Define if GNUstep uses ObjC exceptions.])
1910 GNU_OBJC_CFLAGS="-fobjc-exceptions"
1913 if test $NS_IMPL_GNUSTEP = yes; then
1914 ns_appdir=`pwd`/nextstep/Emacs.app
1915 ns_appbindir=${ns_appdir}
1916 ns_appresdir=${ns_appdir}/Resources
1917 ns_appsrc=GNUstep/Emacs.base
1918 ns_fontfile=nsfont.o
1921 dnl This is only used while we test the NS headers, it gets reset below.
1922 CPPFLAGS="$CPPFLAGS $GNU_OBJC_CFLAGS"
1923 CFLAGS="$CFLAGS $GNU_OBJC_CFLAGS"
1925 AC_CHECK_HEADER([AppKit/AppKit.h], [HAVE_NS=yes],
1926 [AC_MSG_ERROR([The include files (AppKit/AppKit.h etc) that
1927 are required for a Nextstep build are missing or cannot be compiled.
1928 Either fix this, or re-configure with the option '--without-ns'.])])
1931 if test "${NS_IMPL_COCOA}" = "yes"; then
1932 AC_MSG_CHECKING([for Mac OS X 10.6 or newer])
1933 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <AppKit/AppKit.h>],
1935 #ifdef MAC_OS_X_VERSION_MAX_ALLOWED
1936 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
1939 error "Mac OS X 10.6 or newer required";
1943 ns_osx_have_106=yes,
1945 AC_MSG_RESULT([$ns_osx_have_106])
1947 if test $ns_osx_have_106 = no; then
1948 AC_MSG_ERROR([Mac OS X 10.6 or newer is required]);
1953 AC_SUBST(LIBS_GNUSTEP)
1955 INSTALL_ARCH_INDEP_EXTRA=install-etc
1956 ns_self_contained=no
1959 if test "${HAVE_NS}" = yes; then
1960 if test "$with_toolkit_scroll_bars" = "no"; then
1961 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for Nextstep.])
1964 window_system=nextstep
1965 # set up packaging dirs
1966 if test "${EN_NS_SELF_CONTAINED}" = yes; then
1967 ns_self_contained=yes
1968 prefix=${ns_appresdir}
1969 exec_prefix=${ns_appbindir}
1970 dnl This one isn't really used, only archlibdir is.
1971 libexecdir="\${ns_appbindir}/libexec"
1972 archlibdir="\${ns_appbindir}/libexec"
1973 etcdocdir="\${ns_appresdir}/etc"
1974 etcdir="\${ns_appresdir}/etc"
1975 dnl FIXME maybe set datarootdir instead.
1976 dnl That would also get applications, icons, man.
1977 infodir="\${ns_appresdir}/info"
1978 mandir="\${ns_appresdir}/man"
1979 lispdir="\${ns_appresdir}/lisp"
1980 test "$locallisppathset" = no && locallisppath=""
1981 INSTALL_ARCH_INDEP_EXTRA=
1984 NS_OBJC_OBJ="nsterm.o nsfns.o nsmenu.o nsselect.o nsimage.o $ns_fontfile"
1986 CFLAGS="$tmp_CFLAGS"
1987 CPPFLAGS="$tmp_CPPFLAGS"
1988 AC_SUBST(INSTALL_ARCH_INDEP_EXTRA)
1989 AC_SUBST(ns_self_contained)
1991 AC_SUBST(NS_OBJC_OBJ)
1993 if test "${HAVE_NS}" = yes; then
1995 [if the Objective C compiler supports instancetype],
1996 [emacs_cv_objc_instancetype],
1997 [AC_LANG_PUSH([Objective C])
1999 [AC_LANG_SOURCE([[@interface Test
2000 + (instancetype)test;
2002 emacs_cv_objc_instancetype=yes,
2003 emacs_cv_objc_instancetype=no)
2004 AC_LANG_POP([Objective C])])
2006 if test x$emacs_cv_objc_instancetype = xyes ; then
2007 AC_DEFINE(NATIVE_OBJC_INSTANCETYPE, 1,
2008 [Define if ObjC compiler supports instancetype natively.])
2020 if test "${with_w32}" != no; then
2023 AC_CHECK_HEADER([windows.h], [HAVE_W32=yes],
2024 [AC_MSG_ERROR(['--with-w32' was specified, but windows.h
2025 cannot be found.])])
2028 ## Using --with-w32 with MinGW is a no-op, but we allow it.
2031 AC_MSG_ERROR([Using w32 with an autotools build is only supported for Cygwin and MinGW32.])
2036 if test "${opsys}" = "mingw32"; then
2037 AC_CACHE_CHECK([whether Windows API headers are recent enough], [emacs_cv_w32api],
2038 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2039 #include <windows.h>
2040 #include <usp10.h>]],
2041 [[PIMAGE_NT_HEADERS pHeader;
2042 PIMAGE_SECTION_HEADER pSection = IMAGE_FIRST_SECTION(pHeader)]])],
2043 [emacs_cv_w32api=yes], [emacs_cv_w32api=no])])
2044 if test "${emacs_cv_w32api}" = "no"; then
2045 AC_MSG_ERROR([the Windows API headers are too old to support this build.])
2047 HAVE_W32=${emacs_cv_w32api}
2057 if test "${HAVE_W32}" = "yes"; then
2058 AC_DEFINE(HAVE_NTGUI, 1, [Define to use native MS Windows GUI.])
2059 if test "$with_toolkit_scroll_bars" = "no"; then
2060 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for w32 build.])
2062 AC_CHECK_TOOL(WINDRES, [windres],
2063 [AC_MSG_ERROR([No resource compiler found.])])
2064 W32_OBJ="w32fns.o w32menu.o w32reg.o w32font.o w32term.o"
2065 W32_OBJ="$W32_OBJ w32xfns.o w32select.o w32uniscribe.o"
2066 EMACSRES="emacs.res"
2067 case "$canonical" in
2068 x86_64-*-*) EMACS_MANIFEST="emacs-x64.manifest" ;;
2069 *) EMACS_MANIFEST="emacs-x86.manifest" ;;
2071 dnl Construct something of the form "24,4,0,0" with 4 components.
2072 comma_version=`echo "${PACKAGE_VERSION}.0.0" | sed -e 's/\./,/g' -e 's/^\([[^,]]*,[[^,]]*,[[^,]]*,[[^,]]*\).*/\1/'`
2074 comma_space_version=`echo "$comma_version" | sed 's/,/, /g'`
2075 AC_SUBST(comma_version)
2076 AC_SUBST(comma_space_version)
2077 AC_CONFIG_FILES([nt/emacs.rc nt/emacsclient.rc])
2078 if test "${opsys}" = "cygwin"; then
2079 W32_LIBS="$W32_LIBS -lkernel32 -luser32 -lgdi32 -lole32 -lcomdlg32"
2080 W32_LIBS="$W32_LIBS -lusp10 -lcomctl32 -lwinspool"
2081 # Tell the linker that emacs.res is an object (which we compile from
2082 # the rc file), not a linker script.
2083 W32_RES_LINK="-Wl,emacs.res"
2085 W32_OBJ="$W32_OBJ w32.o w32console.o w32heap.o w32inevt.o w32proc.o"
2086 W32_LIBS="$W32_LIBS -lwinmm -lgdi32 -lcomdlg32"
2087 W32_LIBS="$W32_LIBS -lmpr -lwinspool -lole32 -lcomctl32 -lusp10"
2088 W32_RES_LINK="\$(EMACSRES)"
2089 CLIENTRES="emacsclient.res"
2090 CLIENTW="emacsclientw\$(EXEEXT)"
2091 FIRSTFILE_OBJ=firstfile.o
2094 LIBS_ECLIENT="-lcomctl32"
2095 LIB_WSOCK32="-lwsock32"
2096 NTLIB="ntlib.$ac_objext"
2097 XARGS_LIMIT="-s 10000"
2103 AC_SUBST(EMACS_MANIFEST)
2106 AC_SUBST(W32_RES_LINK)
2107 AC_SUBST(FIRSTFILE_OBJ)
2110 AC_SUBST(LIBS_ECLIENT)
2111 AC_SUBST(LIB_WSOCK32)
2113 AC_SUBST(XARGS_LIMIT)
2115 if test "${HAVE_W32}" = "yes"; then
2120 ## $window_system is now set to the window system we will
2128 case "${window_system}" in
2133 case "${with_x_toolkit}" in
2134 athena | lucid ) USE_X_TOOLKIT=LUCID ;;
2135 motif ) USE_X_TOOLKIT=MOTIF ;;
2137 term_header=gtkutil.h
2138 dnl Don't set this for GTK. A lot of tests below assumes Xt when
2139 dnl USE_X_TOOLKIT is set.
2140 USE_X_TOOLKIT=none ;;
2141 gtk2 ) with_gtk2=yes
2142 term_header=gtkutil.h
2143 USE_X_TOOLKIT=none ;;
2144 gtk3 ) with_gtk3=yes
2145 term_header=gtkutil.h
2146 USE_X_TOOLKIT=none ;;
2147 no ) USE_X_TOOLKIT=none ;;
2148 dnl If user did not say whether to use a toolkit, make this decision later:
2149 dnl use the toolkit if we have gtk, or X11R5 or newer.
2150 * ) USE_X_TOOLKIT=maybe ;;
2154 term_header=nsterm.h
2157 term_header=w32term.h
2161 if test "$window_system" = none && test "X$with_x" != "Xno"; then
2162 AC_CHECK_PROG(HAVE_XSERVER, X, true, false)
2163 if test "$HAVE_XSERVER" = true ||
2164 test -n "$DISPLAY" ||
2166 for emacs_libX11 in /usr/lib/libX11.*; do break; done
2167 test "$emacs_libX11" != '/usr/lib/libX11.*'
2170 AC_MSG_ERROR([You seem to be running X, but no X development libraries
2171 were found. You should install the relevant development files for X
2172 and for the toolkit you want, such as Gtk+ or Motif. Also make
2173 sure you have development files for image handling, i.e.
2174 tiff, gif, jpeg, png and xpm.
2175 If you are sure you want Emacs compiled without X window support, pass
2181 # Does the opsystem file prohibit the use of the GNU malloc?
2182 # Assume not, until told otherwise.
2186 [whether malloc is Doug Lea style],
2187 [emacs_cv_var_doug_lea_malloc],
2188 [emacs_cv_var_doug_lea_malloc=no
2189 dnl Hooks do not work with address sanitization.
2190 if test "$emacs_cv_sanitize_address" != yes; then
2193 [[#include <malloc.h>
2194 static void hook (void) {}]],
2195 [[malloc_set_state (malloc_get_state ());
2196 __after_morecore_hook = hook;
2197 __malloc_initialize_hook = hook;]])],
2198 [emacs_cv_var_doug_lea_malloc=yes])
2200 doug_lea_malloc=$emacs_cv_var_doug_lea_malloc
2205 test "$CANNOT_DUMP" = yes ||
2207 ## darwin ld insists on the use of malloc routines in the System framework.
2208 darwin | mingw32 | nacl | sol2-10) ;;
2209 cygwin) hybrid_malloc=yes
2211 *) test "$ac_cv_func_sbrk" = yes && system_malloc=$emacs_cv_sanitize_address;;
2214 if test "${system_malloc}" != yes && test "${doug_lea_malloc}" != yes \
2215 && test "${UNEXEC_OBJ}" = unexelf.o; then
2221 if test "${system_malloc}" = "yes"; then
2222 AC_DEFINE([SYSTEM_MALLOC], 1,
2223 [Define to 1 to use the system memory allocator, even if it is not
2227 (The GNU allocators don't work with this system configuration.)"
2229 elif test "$hybrid_malloc" = yes; then
2230 AC_DEFINE(HYBRID_MALLOC, 1,
2231 [Define to use gmalloc before dumping and the system malloc after.])
2234 GNU_MALLOC_reason=" (only before dumping)"
2235 GMALLOC_OBJ=gmalloc.o
2238 test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
2239 VMLIMIT_OBJ=vm-limit.o
2241 AC_CHECK_HEADERS([sys/vlimit.h])
2242 AC_CACHE_CHECK([for data_start], [emacs_cv_data_start],
2245 [[extern char data_start[]; char ch;]],
2246 [[return data_start < &ch;]])],
2247 [emacs_cv_data_start=yes],
2248 [emacs_cv_data_start=no])])
2249 if test $emacs_cv_data_start = yes; then
2250 AC_DEFINE([HAVE_DATA_START], 1,
2251 [Define to 1 if data_start is the address of the start
2252 of the main data segment.])
2255 AC_SUBST([HYBRID_MALLOC])
2256 AC_SUBST(GMALLOC_OBJ)
2257 AC_SUBST(VMLIMIT_OBJ)
2259 if test "$doug_lea_malloc" = "yes" && test "$hybrid_malloc" != yes; then
2260 if test "$GNU_MALLOC" = yes ; then
2262 (Using Doug Lea's new malloc from the GNU C Library.)"
2264 AC_DEFINE(DOUG_LEA_MALLOC, 1,
2265 [Define to 1 if the system memory allocator is Doug Lea style,
2266 with malloc hooks and malloc_set_state.])
2268 ## Use mmap directly for allocating larger buffers.
2269 ## FIXME this comes from src/s/{gnu,gnu-linux}.h:
2270 ## #ifdef DOUG_LEA_MALLOC; #undef REL_ALLOC; #endif
2271 ## Does the AC_FUNC_MMAP test below make this check unnecessary?
2273 mingw32|gnu*) REL_ALLOC=no ;;
2277 if test x"${REL_ALLOC}" = x; then
2278 REL_ALLOC=${GNU_MALLOC}
2281 use_mmap_for_buffers=no
2283 mingw32) use_mmap_for_buffers=yes ;;
2287 if test $use_mmap_for_buffers = yes; then
2288 AC_DEFINE(USE_MMAP_FOR_BUFFERS, 1, [Define to use mmap to allocate buffer text.])
2292 LIBS="$LIBS_SYSTEM $LIBS"
2294 dnl FIXME replace main with a function we actually want from this library.
2295 AC_CHECK_LIB(Xbsd, main, LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -lXbsd")
2297 dnl Check for the POSIX thread library.
2299 AC_CHECK_HEADERS_ONCE(pthread.h)
2300 if test "$ac_cv_header_pthread_h" && test "$opsys" != "mingw32"; then
2301 AC_CACHE_CHECK([for pthread library],
2302 [emacs_cv_pthread_lib],
2303 [emacs_cv_pthread_lib=no
2305 for emacs_pthread_lib in 'none needed' -lpthread; do
2306 case $emacs_pthread_lib in
2307 -*) LIBS="$OLD_LIBS $emacs_pthread_lib";;
2311 [[#include <pthread.h>
2313 sigset_t old_mask, new_mask;
2314 void noop (void) {}]],
2315 [[pthread_t th = pthread_self ();
2317 status += pthread_create (&th, 0, 0, 0);
2318 status += pthread_sigmask (SIG_BLOCK, &new_mask, &old_mask);
2319 status += pthread_kill (th, 0);
2320 #if ! (defined SYSTEM_MALLOC || defined HYBRID_MALLOC \
2321 || defined DOUG_LEA_MALLOC)
2322 /* Test for pthread_atfork only if gmalloc uses it,
2323 as older-style hosts like MirBSD 10 lack it. */
2324 status += pthread_atfork (noop, noop, noop);
2327 [emacs_cv_pthread_lib=$emacs_pthread_lib])
2329 if test "$emacs_cv_pthread_lib" != no; then
2333 if test "$emacs_cv_pthread_lib" != no; then
2334 AC_DEFINE([HAVE_PTHREAD], 1, [Define to 1 if you have POSIX threads.])
2335 case $emacs_cv_pthread_lib in
2336 -*) LIB_PTHREAD=$emacs_cv_pthread_lib;;
2338 ac_cv_func_pthread_sigmask=yes
2339 # Some systems optimize for single-threaded programs by default, and
2340 # need special flags to disable these optimizations. For example, the
2341 # definition of 'errno' in <errno.h>.
2344 AC_DEFINE([_REENTRANT], 1,
2345 [Define to 1 if your system requires this in multithreaded code.]);;
2347 AC_DEFINE([_THREAD_SAFE], 1,
2348 [Define to 1 if your system requires this in multithreaded code.]);;
2352 AC_SUBST([LIB_PTHREAD])
2354 AC_MSG_CHECKING([for thread support])
2356 if test "$with_threads" = yes; then
2357 if test "$emacs_cv_pthread_lib" != no; then
2358 AC_DEFINE(THREADS_ENABLED, 1,
2359 [Define to 1 if you want elisp thread support.])
2361 elif test "${opsys}" = "mingw32"; then
2362 dnl MinGW can do native Windows threads even without pthreads
2363 AC_DEFINE(THREADS_ENABLED, 1,
2364 [Define to 1 if you want elisp thread support.])
2368 AC_MSG_RESULT([$threads_enabled])
2370 dnl Check for need for bigtoc support on IBM AIX
2374 AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
2376 yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
2377 *) gdb_cv_bigtoc=-bbigtoc ;;
2380 LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
2381 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[int i;]])], [], [gdb_cv_bigtoc=])
2386 # Change CFLAGS, CPPFLAGS, and LIBS temporarily so that C_SWITCH_X_SITE
2387 # is for the tests that follow. We set them back later on.
2389 REAL_CFLAGS="$CFLAGS"
2390 REAL_CPPFLAGS="$CPPFLAGS"
2393 if test "${HAVE_X11}" = "yes"; then
2394 DEFS="$C_SWITCH_X_SITE $DEFS"
2395 LDFLAGS="$LDFLAGS $LD_SWITCH_X_SITE"
2397 CFLAGS="$C_SWITCH_X_SITE $CFLAGS"
2398 CPPFLAGS="$C_SWITCH_X_SITE $CPPFLAGS"
2400 # On Solaris, arrange for LD_RUN_PATH to point to the X libraries for tests.
2401 # This is handled by LD_SWITCH_X_SITE_RPATH during the real build,
2402 # but it's more convenient here to set LD_RUN_PATH since this
2403 # also works on hosts that don't understand LD_SWITCH_X_SITE_RPATH.
2404 if test "${x_libraries}" != NONE && test -n "${x_libraries}"; then
2405 LD_RUN_PATH=$x_libraries${LD_RUN_PATH+:}$LD_RUN_PATH
2409 if test "${opsys}" = "gnu-linux"; then
2410 AC_CACHE_CHECK([whether X on GNU/Linux needs -b to link], [emacs_cv_b_link],
2411 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2412 [[XOpenDisplay ("foo");]])],
2413 [xgnu_linux_first_failure=no],
2414 [xgnu_linux_first_failure=yes])
2415 if test "${xgnu_linux_first_failure}" = "yes"; then
2416 OLD_CPPFLAGS="$CPPFLAGS"
2418 CPPFLAGS="$CPPFLAGS -b i486-linuxaout"
2419 LIBS="$LIBS -b i486-linuxaout"
2420 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2421 [[XOpenDisplay ("foo");]])],
2422 [xgnu_linux_second_failure=no],
2423 [xgnu_linux_second_failure=yes])
2424 if test "${xgnu_linux_second_failure}" = "yes"; then
2425 # If we get the same failure with -b, there is no use adding -b.
2426 # So leave it out. This plays safe.
2431 CPPFLAGS=$OLD_CPPFLAGS
2436 if test "x$emacs_cv_b_link" = xyes ; then
2437 LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -b i486-linuxaout"
2438 C_SWITCH_X_SITE="$C_SWITCH_X_SITE -b i486-linuxaout"
2442 # Reportedly, some broken Solaris systems have XKBlib.h but are missing
2443 # header files included from there.
2444 AC_CACHE_CHECK([for Xkb], [emacs_cv_xkb],
2445 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>
2446 #include <X11/XKBlib.h>]],
2447 [[XkbDescPtr kb = XkbGetKeyboard (0, XkbAllComponentsMask, XkbUseCoreKbd);]])],
2448 emacs_cv_xkb=yes, emacs_cv_xkb=no)])
2449 if test $emacs_cv_xkb = yes; then
2450 AC_DEFINE(HAVE_XKB, 1, [Define to 1 if you have the Xkb extension.])
2453 AC_CHECK_FUNCS(XrmSetDatabase XScreenResourceString \
2454 XScreenNumberOfScreen)
2457 if test "${window_system}" = "x11"; then
2458 AC_MSG_CHECKING(X11 version 6)
2459 AC_CACHE_VAL(emacs_cv_x11_version_6,
2460 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]],
2461 [[#if XlibSpecificationRelease < 6
2464 ]])], emacs_cv_x11_version_6=yes, emacs_cv_x11_version_6=no)])
2465 if test $emacs_cv_x11_version_6 = yes; then
2466 AC_MSG_RESULT(6 or newer)
2467 AC_DEFINE(HAVE_X11R6, 1,
2468 [Define to 1 if you have the X11R6 or newer version of Xlib.])
2469 AC_DEFINE(HAVE_X_I18N, 1, [Define if you have usable i18n support.])
2470 ## inoue@ainet.or.jp says Solaris has a bug related to X11R6-style
2474 *) AC_DEFINE(HAVE_X11R6_XIM, 1,
2475 [Define if you have usable X11R6-style XIM support.])
2479 AC_MSG_RESULT(before 6)
2484 ### Use -lrsvg-2 if available, unless '--with-rsvg=no' is specified.
2486 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${opsys}" = "mingw32"; then
2487 if test "${with_rsvg}" != "no"; then
2488 RSVG_REQUIRED=2.11.0
2489 RSVG_MODULE="librsvg-2.0 >= $RSVG_REQUIRED"
2491 EMACS_CHECK_MODULES([RSVG], [$RSVG_MODULE])
2492 AC_SUBST(RSVG_CFLAGS)
2495 if test $HAVE_RSVG = yes; then
2496 AC_DEFINE(HAVE_RSVG, 1, [Define to 1 if using librsvg.])
2497 CFLAGS="$CFLAGS $RSVG_CFLAGS"
2498 # Windows loads librsvg dynamically
2499 if test "${opsys}" = "mingw32"; then
2507 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${HAVE_W32}" = "yes"; then
2508 if test "${with_imagemagick}" != "no"; then
2509 ## 6.3.5 is the earliest version known to work; see Bug#17339.
2510 ## 6.8.2 makes Emacs crash; see Bug#13867.
2511 ## 7 and later have not been ported to; See Bug#25967.
2512 IMAGEMAGICK_MODULE="Wand >= 6.3.5 Wand != 6.8.2 Wand < 7"
2513 EMACS_CHECK_MODULES([IMAGEMAGICK], [$IMAGEMAGICK_MODULE])
2515 if test $HAVE_IMAGEMAGICK = yes; then
2518 CFLAGS="$CFLAGS $IMAGEMAGICK_CFLAGS"
2519 LIBS="$IMAGEMAGICK_LIBS $LIBS"
2520 AC_CHECK_FUNCS([MagickRelinquishMemory MagickExportImagePixels \
2521 MagickMergeImageLayers MagickAutoOrientImage])
2524 # Check that ImageMagick links. It does not link on Fedora 25
2525 # with './configure CC=clang', as pkg-config outputs flags like
2526 # -lomp that work for GCC but not Clang.
2527 if test "$ac_cv_func_MagickRelinquishMemory" != yes; then
2531 if test $HAVE_IMAGEMAGICK = yes; then
2532 AC_DEFINE([HAVE_IMAGEMAGICK], 1, [Define to 1 if using ImageMagick.])
2537 AC_SUBST([IMAGEMAGICK_CFLAGS])
2538 AC_SUBST([IMAGEMAGICK_LIBS])
2542 AC_CHECK_LIB(anl, getaddrinfo_a, HAVE_GETADDRINFO_A=yes)
2543 if test "${HAVE_GETADDRINFO_A}" = "yes"; then
2544 AC_DEFINE(HAVE_GETADDRINFO_A, 1,
2545 [Define to 1 if you have getaddrinfo_a for asynchronous DNS resolution.])
2546 GETADDRINFO_A_LIBS="-lanl"
2547 AC_SUBST(GETADDRINFO_A_LIBS)
2552 gtk_term_header=$term_header
2555 if test "${opsys}" != "mingw32"; then
2556 if test "${with_gtk3}" = "yes" || test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
2559 GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2561 dnl Checks for libraries.
2562 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2563 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2564 if test "$pkg_check_gtk" = "no" && test "$with_gtk3" = "yes"; then
2565 AC_MSG_ERROR($GTK_PKG_ERRORS)
2567 if test "$pkg_check_gtk" = "yes"; then
2568 AC_DEFINE(HAVE_GTK3, 1, [Define to 1 if using GTK 3 or later.])
2569 GTK_OBJ=emacsgtkfixed.o
2570 gtk_term_header=gtkutil.h
2571 USE_GTK_TOOLKIT="GTK3"
2572 if test "x$ac_enable_gtk_deprecation_warnings" = x; then
2573 AC_DEFINE([GDK_DISABLE_DEPRECATION_WARNINGS], [1],
2574 [Define to 1 to disable GTK+/GDK deprecation warnings.])
2575 AC_DEFINE([GLIB_DISABLE_DEPRECATION_WARNINGS], [1],
2576 [Define to 1 to disable Glib deprecation warnings.])
2580 gtk3_pkg_errors="$GTK_PKG_ERRORS "
2584 if test "${with_gtk2}" = "yes" || test "$check_gtk2" = "yes"; then
2587 GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2589 dnl Checks for libraries.
2590 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2591 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2592 if test "$pkg_check_gtk" = "no" &&
2593 { test "$with_gtk" = yes || test "$with_gtk2" = "yes"; }
2595 AC_MSG_ERROR($gtk3_pkg_errors$GTK_PKG_ERRORS)
2597 test "$pkg_check_gtk" = "yes" && USE_GTK_TOOLKIT="GTK2"
2604 if test x"$pkg_check_gtk" = xyes; then
2607 CFLAGS="$CFLAGS $GTK_CFLAGS"
2608 LIBS="$GTK_LIBS $LIBS"
2609 dnl Try to compile a simple GTK program.
2610 AC_CACHE_CHECK([whether GTK compiles], [emacs_cv_gtk_compiles],
2613 [[/* Check the Gtk and Glib APIs. */
2614 #include <gtk/gtk.h>
2615 #include <glib-object.h>
2617 callback (GObject *go, GParamSpec *spec, gpointer user_data)
2621 GtkSettings *gs = 0;
2622 /* Use G_CALLBACK to make sure function pointers can be cast to void *;
2623 strict C prohibits this. Use gtk_main_iteration to test that the
2624 libraries are there. */
2625 if (g_signal_handler_find (G_OBJECT (gs), G_SIGNAL_MATCH_FUNC,
2626 0, 0, 0, G_CALLBACK (callback), 0))
2627 gtk_main_iteration ();
2629 [emacs_cv_gtk_compiles=yes], [emacs_cv_gtk_compiles=no])])
2630 if test "${emacs_cv_gtk_compiles}" != "yes"; then
2632 if test "$USE_X_TOOLKIT" != "maybe"; then
2633 AC_MSG_ERROR([Gtk+ wanted, but it does not compile, see config.log. Maybe some x11-devel files missing?]);
2636 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $GTK_CFLAGS"
2638 AC_DEFINE(USE_GTK, 1, [Define to 1 if using GTK.])
2639 GTK_OBJ="gtkutil.o $GTK_OBJ"
2640 term_header=$gtk_term_header
2642 AC_MSG_WARN([[Your version of Gtk+ will have problems with
2643 closing open displays. This is no problem if you just use
2644 one display, but if you use more than one and close one of them
2646 See http://bugzilla.gnome.org/show_bug.cgi?id=85715]])
2653 if test "${HAVE_GTK}" = "yes"; then
2655 dnl GTK scrollbars resemble toolkit scrollbars a lot, so to avoid
2656 dnl a lot if #ifdef:s, say we have toolkit scrollbars.
2657 if test "$with_toolkit_scroll_bars" != no; then
2658 with_toolkit_scroll_bars=yes
2661 dnl Check if we have the old file selection dialog declared and
2662 dnl in the link library. In 2.x it may be in the library,
2663 dnl but not declared if deprecated featured has been selected out.
2664 dnl AC_CHECK_DECL checks for a macro, so check for GTK_TYPE_FILE_SELECTION.
2665 HAVE_GTK_FILE_SELECTION=no
2666 AC_CHECK_DECL(GTK_TYPE_FILE_SELECTION, HAVE_GTK_FILE_SELECTION=yes,
2667 HAVE_GTK_FILE_SELECTION=no, [AC_INCLUDES_DEFAULT
2668 #include <gtk/gtk.h>])
2669 if test "$HAVE_GTK_FILE_SELECTION" = yes; then
2670 AC_CHECK_FUNCS(gtk_file_selection_new)
2673 dnl Same as above for gtk_handle_box.
2674 HAVE_GTK_HANDLE_BOX=no
2675 AC_CHECK_DECL(GTK_TYPE_HANDLE_BOX, HAVE_GTK_HANDLE_BOX=yes,
2676 HAVE_GTK_HANDLE_BOX=no, [AC_INCLUDES_DEFAULT
2677 #include <gtk/gtk.h>])
2678 if test "$HAVE_GTK_HANDLE_BOX" = yes; then
2679 AC_CHECK_FUNCS(gtk_handle_box_new)
2682 dnl Same as above for gtk_tearoff_menu_item.
2683 HAVE_GTK_TEAROFF_MENU_ITEM=no
2684 AC_CHECK_DECL(GTK_TYPE_TEAROFF_MENU_ITEM, HAVE_GTK_TEAROFF_MENU_ITEM=yes,
2685 HAVE_GTK_TEAROFF_MENU_ITEM=no, [AC_INCLUDES_DEFAULT
2686 #include <gtk/gtk.h>])
2687 if test "$HAVE_GTK_TEAROFF_MENU_ITEM" = yes; then
2688 AC_CHECK_FUNCS(gtk_tearoff_menu_item_new)
2691 dnl Check for functions introduced in 2.14 and later.
2692 AC_CHECK_FUNCS(gtk_widget_get_window gtk_widget_set_has_window \
2693 gtk_dialog_get_action_area gtk_widget_get_sensitive \
2694 gtk_widget_get_mapped gtk_adjustment_get_page_size \
2695 gtk_orientable_set_orientation \
2696 gtk_window_set_has_resize_grip)
2698 term_header=gtkutil.h
2702 dnl Enable xwidgets if GTK3 and WebKitGTK+ are available.
2705 if test "$with_xwidgets" != "no"; then
2706 test "$USE_GTK_TOOLKIT" = "GTK3" && test "$window_system" != "none" ||
2707 AC_MSG_ERROR([xwidgets requested but gtk3 not used.])
2709 WEBKIT_REQUIRED=2.12
2710 WEBKIT_MODULES="webkit2gtk-4.0 >= $WEBKIT_REQUIRED"
2711 EMACS_CHECK_MODULES([WEBKIT], [$WEBKIT_MODULES])
2712 HAVE_XWIDGETS=$HAVE_WEBKIT
2713 test $HAVE_XWIDGETS = yes ||
2714 AC_MSG_ERROR([xwidgets requested but WebKitGTK+ not found.])
2716 XWIDGETS_OBJ=xwidget.o
2717 AC_DEFINE([HAVE_XWIDGETS], 1, [Define to 1 if you have xwidgets support.])
2719 AC_SUBST(XWIDGETS_OBJ)
2724 dnl D-Bus has been tested under GNU/Linux only. Must be adapted for
2725 dnl other platforms.
2728 if test "${with_dbus}" = "yes"; then
2729 EMACS_CHECK_MODULES([DBUS], [dbus-1 >= 1.0])
2730 if test "$HAVE_DBUS" = yes; then
2731 AC_DEFINE(HAVE_DBUS, 1, [Define to 1 if using D-Bus.])
2732 dnl dbus_watch_get_unix_fd has been introduced in D-Bus 1.1.1.
2733 dnl dbus_type_is_valid and dbus_validate_* have been introduced in
2736 LIBS="$LIBS $DBUS_LIBS"
2737 AC_CHECK_FUNCS(dbus_watch_get_unix_fd \
2738 dbus_type_is_valid \
2739 dbus_validate_bus_name \
2740 dbus_validate_path \
2741 dbus_validate_interface \
2742 dbus_validate_member)
2747 AC_SUBST(DBUS_CFLAGS)
2751 dnl GSettings has been tested under GNU/Linux only.
2753 if test "${HAVE_X11}" = "yes" && test "${with_gsettings}" = "yes"; then
2754 EMACS_CHECK_MODULES([GSETTINGS], [gio-2.0 >= 2.26])
2755 if test "$HAVE_GSETTINGS" = "yes"; then
2757 CFLAGS="$CFLAGS $GSETTINGS_CFLAGS"
2759 LIBS="$LIBS $GSETTINGS_LIBS"
2760 AC_CACHE_CHECK([whether GSettings is in gio], [emacs_cv_gsettings_in_gio],
2763 [[/* Check that gsettings really is present. */
2764 #include <glib-object.h>
2765 #include <gio/gio.h>
2768 GSettings *settings;
2769 GVariant *val = g_settings_get_value (settings, "");
2771 [emacs_cv_gsettings_in_gio=yes], [emacs_cv_gsettings_in_gio=no])])
2773 if test "$emacs_cv_gsettings_in_gio" = "yes"; then
2774 AC_DEFINE(HAVE_GSETTINGS, 1, [Define to 1 if using GSettings.])
2775 SETTINGS_CFLAGS="$GSETTINGS_CFLAGS"
2776 SETTINGS_LIBS="$GSETTINGS_LIBS"
2777 test "$with_gconf" = "yes" || with_gconf=no
2784 dnl GConf has been tested under GNU/Linux only.
2785 dnl The version is really arbitrary, it is about the same age as Gtk+ 2.6.
2787 if test "${HAVE_X11}" = "yes" && test "${with_gconf}" != "no"; then
2788 EMACS_CHECK_MODULES([GCONF], [gconf-2.0 >= 2.13])
2789 if test "$HAVE_GCONF" = yes; then
2790 AC_DEFINE(HAVE_GCONF, 1, [Define to 1 if using GConf.])
2791 dnl Newer GConf doesn't link with g_objects, so this is not defined.
2792 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GCONF_CFLAGS"
2793 SETTINGS_LIBS="$SETTINGS_LIBS $GCONF_LIBS"
2797 if test "$HAVE_GSETTINGS" = "yes" || test "$HAVE_GCONF" = "yes"; then
2798 EMACS_CHECK_MODULES([GOBJECT], [gobject-2.0 >= 2.0])
2799 if test "$HAVE_GOBJECT" = "yes"; then
2800 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GOBJECT_CFLAGS"
2801 SETTINGS_LIBS="$SETTINGS_LIBS $GOBJECT_LIBS"
2803 SAVE_CFLAGS="$CFLAGS"
2805 CFLAGS="$SETTINGS_CFLAGS $CFLAGS"
2806 LIBS="$SETTINGS_LIBS $LIBS"
2807 CFLAGS="$SAVE_CFLAGS"
2810 AC_SUBST(SETTINGS_CFLAGS)
2811 AC_SUBST(SETTINGS_LIBS)
2814 dnl SELinux is available for GNU/Linux only.
2817 if test "${with_selinux}" = "yes"; then
2818 AC_CHECK_LIB([selinux], [lgetfilecon], HAVE_LIBSELINUX=yes, HAVE_LIBSELINUX=no)
2819 if test "$HAVE_LIBSELINUX" = yes; then
2820 AC_DEFINE(HAVE_LIBSELINUX, 1, [Define to 1 if using SELinux.])
2821 LIBSELINUX_LIBS=-lselinux
2824 AC_SUBST(LIBSELINUX_LIBS)
2827 if test "${with_gnutls}" = "yes" ; then
2828 EMACS_CHECK_MODULES([LIBGNUTLS], [gnutls >= 2.12.2],
2829 [HAVE_GNUTLS=yes], [HAVE_GNUTLS=no])
2830 if test "${HAVE_GNUTLS}" = "yes"; then
2831 AC_DEFINE(HAVE_GNUTLS, 1, [Define if using GnuTLS.])
2834 # Windows loads GnuTLS dynamically
2835 if test "${opsys}" = "mingw32"; then
2840 AC_SUBST(LIBGNUTLS_LIBS)
2841 AC_SUBST(LIBGNUTLS_CFLAGS)
2844 if test "${with_libsystemd}" = "yes" ; then
2845 dnl This code has been tested with libsystemd 222 and later.
2846 dnl FIXME: Find the earliest version number for which Emacs should work,
2847 dnl and change '222' to that number.
2848 EMACS_CHECK_MODULES([LIBSYSTEMD], [libsystemd >= 222],
2849 [HAVE_LIBSYSTEMD=yes], [HAVE_LIBSYSTEMD=no])
2850 if test "${HAVE_LIBSYSTEMD}" = "yes"; then
2851 AC_DEFINE(HAVE_LIBSYSTEMD, 1, [Define if using libsystemd.])
2855 AC_SUBST(LIBSYSTEMD_LIBS)
2856 AC_SUBST(LIBSYSTEMD_CFLAGS)
2861 dnl MS Windows native file monitor is available for mingw32 only.
2862 case $with_file_notification,$opsys in
2864 AC_MSG_ERROR(['--with-file-notification=w32' was specified, but
2865 this is only supported on MS-Windows native and MinGW32 builds.
2866 Consider using gfile instead.])
2868 w32,* | yes,mingw32)
2869 AC_CHECK_HEADER(windows.h)
2870 if test "$ac_cv_header_windows_h" = yes ; then
2871 AC_DEFINE(HAVE_W32NOTIFY, 1, [Define to 1 to use w32notify.])
2872 NOTIFY_OBJ=w32notify.o
2873 NOTIFY_SUMMARY="yes (w32)"
2877 dnl inotify is available only on GNU/Linux.
2878 case $with_file_notification,$NOTIFY_OBJ in
2880 AC_CHECK_HEADER(sys/inotify.h)
2881 if test "$ac_cv_header_sys_inotify_h" = yes ; then
2882 AC_CHECK_FUNC(inotify_init1)
2883 if test "$ac_cv_func_inotify_init1" = yes; then
2884 AC_DEFINE(HAVE_INOTIFY, 1, [Define to 1 to use inotify.])
2885 NOTIFY_OBJ=inotify.o
2886 NOTIFY_SUMMARY="yes -lglibc (inotify)"
2891 dnl kqueue is available on BSD-like systems.
2892 case $with_file_notification,$NOTIFY_OBJ in
2894 EMACS_CHECK_MODULES([KQUEUE], [libkqueue])
2895 if test "$HAVE_KQUEUE" = "yes"; then
2896 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2897 CPPFLAGS="$CPPFLAGS -I/usr/include/kqueue"
2898 NOTIFY_CFLAGS=$KQUEUE_CFLAGS
2899 NOTIFY_LIBS=$KQUEUE_LIBS
2901 NOTIFY_SUMMARY="yes -lkqueue"
2903 AC_SEARCH_LIBS(kqueue, [])
2904 if test "$ac_cv_search_kqueue" != no; then
2905 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2907 NOTIFY_SUMMARY="yes (kqueue)"
2912 dnl g_file_monitor exists since glib 2.18. G_FILE_MONITOR_EVENT_MOVED
2913 dnl has been added in glib 2.24. It has been tested under
2915 case $with_file_notification,$NOTIFY_OBJ in
2917 if test "${HAVE_NS}" = yes; then
2918 AC_MSG_ERROR(['--with-file-notification=gfile' is not supported in NextStep builds.
2919 Consider kqueue instead.])
2921 EMACS_CHECK_MODULES([GFILENOTIFY], [gio-2.0 >= 2.24])
2922 if test "$HAVE_GFILENOTIFY" = "yes"; then
2923 AC_DEFINE(HAVE_GFILENOTIFY, 1, [Define to 1 if using GFile.])
2924 NOTIFY_CFLAGS=$GFILENOTIFY_CFLAGS
2925 NOTIFY_LIBS=$GFILENOTIFY_LIBS
2926 NOTIFY_OBJ=gfilenotify.o
2927 NOTIFY_SUMMARY="yes -lgio (gfile)"
2932 case $with_file_notification,$NOTIFY_OBJ in
2933 yes,* | no,* | *,?*) ;;
2934 *) AC_MSG_ERROR([File notification '$with_file_notification' requested but requirements not found.]) ;;
2937 if test -n "$NOTIFY_OBJ"; then
2938 AC_DEFINE(USE_FILE_NOTIFY, 1, [Define to 1 if using file notifications.])
2940 AC_SUBST(NOTIFY_CFLAGS)
2941 AC_SUBST(NOTIFY_LIBS)
2942 AC_SUBST(NOTIFY_OBJ)
2944 dnl Do not put whitespace before the #include statements below.
2945 dnl Older compilers (eg sunos4 cc) choke on it.
2948 if test x"${USE_X_TOOLKIT}" = xmaybe || test x"${USE_X_TOOLKIT}" = xLUCID; then
2949 if test "$with_xaw3d" != no; then
2950 AC_CACHE_VAL(emacs_cv_xaw3d,
2951 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
2952 #include <X11/Intrinsic.h>
2953 #include <X11/Xaw3d/Simple.h>]],
2955 [AC_CHECK_LIB(Xaw3d, XawScrollbarSetThumb,
2956 emacs_cv_xaw3d=yes, emacs_cv_xaw3d=no)],
2957 emacs_cv_xaw3d=no)])
2961 if test $emacs_cv_xaw3d = yes; then
2962 AC_MSG_CHECKING(for xaw3d)
2963 AC_MSG_RESULT([yes; using Lucid toolkit])
2967 AC_DEFINE(HAVE_XAW3D, 1,
2968 [Define to 1 if you have the Xaw3d library (-lXaw3d).])
2970 AC_MSG_CHECKING(for xaw3d)
2972 AC_MSG_CHECKING(for libXaw)
2973 AC_CACHE_VAL(emacs_cv_xaw,
2974 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
2975 #include <X11/Intrinsic.h>
2976 #include <X11/Xaw/Simple.h>]],
2980 if test $emacs_cv_xaw = yes; then
2981 AC_MSG_RESULT([yes; using Lucid toolkit])
2984 elif test x"${USE_X_TOOLKIT}" = xLUCID; then
2985 AC_MSG_ERROR([Lucid toolkit requires X11/Xaw include files])
2987 AC_MSG_ERROR([No X toolkit could be found.
2988 If you are sure you want Emacs compiled without an X toolkit, pass
2990 to configure. Otherwise, install the development libraries for the toolkit
2991 that you want to use (e.g. Gtk+) and re-run configure.])
2996 X_TOOLKIT_TYPE=$USE_X_TOOLKIT
3000 if test "${USE_X_TOOLKIT}" != "none"; then
3001 AC_MSG_CHECKING(X11 toolkit version)
3002 AC_CACHE_VAL(emacs_cv_x11_toolkit_version_6,
3003 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Intrinsic.h>]],
3004 [[#if XtSpecificationRelease < 6
3007 ]])], emacs_cv_x11_toolkit_version_6=yes, emacs_cv_x11_toolkit_version_6=no)])
3008 HAVE_X11XTR6=$emacs_cv_x11_toolkit_version_6
3009 if test $emacs_cv_x11_toolkit_version_6 = yes; then
3010 AC_MSG_RESULT(6 or newer)
3011 AC_DEFINE(HAVE_X11XTR6, 1,
3012 [Define to 1 if you have the X11R6 or newer version of Xt.])
3013 LIBXTR6="-lSM -lICE"
3015 ## Use libw.a along with X11R6 Xt.
3016 unixware) LIBXTR6="$LIBXTR6 -lw" ;;
3019 AC_MSG_RESULT(before 6)
3022 dnl If using toolkit, check whether libXmu.a exists.
3023 dnl tranle@intellicorp.com says libXmu.a can need XtMalloc in libXt.a to link.
3025 if test x$HAVE_X11XTR6 = xyes; then
3026 OTHERLIBS='-lXt -lSM -lICE'
3030 AC_SEARCH_LIBS([XmuConvertStandardSelection], [Xmu], [], [], [$OTHERLIBS])
3031 if test "X$LIBS" != "X$OLDLIBS"; then
3032 LIBXMU=$ac_cv_search_XmuConvertStandardSelection
3035 dnl ac_cv_search_XmuConvertStandardSelection is also referenced below.
3041 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3042 # OpenMotif may be installed in such a way on some GNU/Linux systems.
3043 if test -d /usr/include/openmotif; then
3044 CPPFLAGS="-I/usr/include/openmotif $CPPFLAGS"
3045 emacs_cv_openmotif=yes
3046 case "$canonical" in
3047 x86_64-*-linux-gnu* | powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*)
3048 test -d /usr/lib64/openmotif && LDFLAGS="-L/usr/lib64/openmotif $LDFLAGS"
3051 test -d /usr/lib/openmotif && LDFLAGS="-L/usr/lib/openmotif $LDFLAGS"
3054 emacs_cv_openmotif=no
3056 AC_CACHE_CHECK(for (Open)Motif version 2.1, emacs_cv_motif_version_2_1,
3057 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <Xm/Xm.h>]],
3058 [[#if XmVERSION > 2 || (XmVERSION == 2 && XmREVISION >= 1)
3061 Motif version prior to 2.1.
3063 emacs_cv_motif_version_2_1=yes, emacs_cv_motif_version_2_1=no)])
3064 if test $emacs_cv_motif_version_2_1 = yes; then
3065 AC_CHECK_LIB(Xp, XpCreateContext, LIBXP=-lXp)
3066 if test x$emacs_cv_openmotif = xyes; then
3067 REAL_CPPFLAGS="-I/usr/include/openmotif $REAL_CPPFLAGS"
3070 AC_CACHE_CHECK(for LessTif where some systems put it, emacs_cv_lesstif,
3071 # We put this in CFLAGS temporarily to precede other -I options
3072 # that might be in CFLAGS temporarily.
3073 # We put this in CPPFLAGS where it precedes the other -I options.
3074 OLD_CPPFLAGS=$CPPFLAGS
3076 CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CPPFLAGS"
3077 CFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CFLAGS"
3078 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include </usr/X11R6/LessTif/Motif1.2/include/Xm/Xm.h>]],
3080 emacs_cv_lesstif=yes, emacs_cv_lesstif=no)])
3081 if test $emacs_cv_lesstif = yes; then
3082 # Make sure this -I option remains in CPPFLAGS after it is set
3083 # back to REAL_CPPFLAGS.
3084 # There is no need to change REAL_CFLAGS, because REAL_CFLAGS does not
3085 # have those other -I options anyway. Ultimately, having this
3086 # directory ultimately in CPPFLAGS will be enough.
3087 REAL_CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $REAL_CPPFLAGS"
3088 LDFLAGS="-L/usr/X11R6/LessTif/Motif1.2/lib $LDFLAGS"
3091 CPPFLAGS=$OLD_CPPFLAGS
3094 AC_CHECK_HEADER([Xm/BulletinB.h], [],
3095 [AC_MSG_ERROR([Motif toolkit requested but requirements not found.])])
3098 dnl Use toolkit scroll bars if configured for GTK or X toolkit and either
3099 dnl using Motif or Xaw3d is available, and unless
3100 dnl --with-toolkit-scroll-bars=no was specified.
3102 AH_TEMPLATE(USE_TOOLKIT_SCROLL_BARS,
3103 [Define to 1 if we should use toolkit scroll bars.])dnl
3104 USE_TOOLKIT_SCROLL_BARS=no
3105 if test "${with_toolkit_scroll_bars}" != "no"; then
3106 if test "${USE_X_TOOLKIT}" != "none"; then
3107 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3108 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3110 USE_TOOLKIT_SCROLL_BARS=yes
3111 elif test "${HAVE_XAW3D}" = "yes" || test "${USE_X_TOOLKIT}" = "LUCID"; then
3112 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3113 USE_TOOLKIT_SCROLL_BARS=yes
3115 elif test "${HAVE_GTK}" = "yes"; then
3116 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3117 USE_TOOLKIT_SCROLL_BARS=yes
3118 elif test "${HAVE_NS}" = "yes"; then
3119 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3120 USE_TOOLKIT_SCROLL_BARS=yes
3121 elif test "${HAVE_W32}" = "yes"; then
3122 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3123 USE_TOOLKIT_SCROLL_BARS=yes
3127 dnl See if XIM is available.
3128 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3129 #include <X11/Xlib.h>
3130 #include <X11/Xresource.h>]],
3131 [[XIMProc callback;]])],
3133 AC_DEFINE(HAVE_XIM, 1, [Define to 1 if XIM is available])],
3136 dnl '--with-xim' now controls only the initial value of use_xim at run time.
3138 if test "${with_xim}" != "no"; then
3139 AC_DEFINE(USE_XIM, 1,
3140 [Define to 1 if we should use XIM, if it is available.])
3144 if test "${HAVE_XIM}" != "no"; then
3146 if test "$GCC" = yes; then
3147 CFLAGS="$CFLAGS --pedantic-errors"
3149 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3150 #include <X11/Xlib.h>
3151 #include <X11/Xresource.h>]],
3157 XPointer *client_data;
3159 /* If we're not using GCC, it's probably not XFree86, and this is
3160 probably right, but we can't use something like --pedantic-errors. */
3161 extern Bool XRegisterIMInstantiateCallback(Display*, XrmDatabase, char*,
3162 char*, XIMProc, XPointer*);
3164 (void)XRegisterIMInstantiateCallback(display, db, res_name, res_class, callback,
3166 [emacs_cv_arg6_star=yes])
3167 AH_TEMPLATE(XRegisterIMInstantiateCallback_arg6,
3168 [Define to the type of the 6th arg of XRegisterIMInstantiateCallback,
3169 either XPointer or XPointer*.])dnl
3170 if test "$emacs_cv_arg6_star" = yes; then
3171 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer*])
3173 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer])
3178 ### Start of font-backend (under any platform) section.
3179 # (nothing here yet -- this is a placeholder)
3180 ### End of font-backend (under any platform) section.
3182 ### Start of font-backend (under X11) section.
3183 if test "${HAVE_X11}" = "yes"; then
3184 ## Use -lXft if available, unless '--with-xft=no'.
3186 if test "x${with_x}" = "xno"; then
3190 if test "$with_xft" != no; then
3191 EMACS_CHECK_MODULES([FONTCONFIG], [fontconfig >= 2.2.0])
3192 with_xft=$HAVE_FONTCONFIG
3195 if test "x${with_xft}" != "xno"; then
3197 EMACS_CHECK_MODULES([XFT], [xft >= 0.13.0], [], [HAVE_XFT=no])
3198 ## Because xftfont.c uses XRenderQueryExtension, we also
3199 ## need to link to -lXrender.
3201 AC_CHECK_LIB(Xrender, XRenderQueryExtension, HAVE_XRENDER=yes)
3202 if test "$HAVE_XFT" != no && test "$HAVE_XRENDER" != no; then
3203 OLD_CPPFLAGS="$CPPFLAGS"
3204 OLD_CFLAGS="$CFLAGS"
3206 CPPFLAGS="$CPPFLAGS $XFT_CFLAGS"
3207 CFLAGS="$CFLAGS $XFT_CFLAGS"
3208 XFT_LIBS="-lXrender $XFT_LIBS"
3209 LIBS="$XFT_LIBS $LIBS"
3210 AC_CHECK_HEADER(X11/Xft/Xft.h,
3211 AC_CHECK_LIB(Xft, XftFontOpen, HAVE_XFT=yes, , $XFT_LIBS) , ,
3212 [[#include <X11/X.h>]])
3214 if test "${HAVE_XFT}" = "yes"; then
3215 AC_DEFINE(HAVE_XFT, 1, [Define to 1 if you have the Xft library.])
3217 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $XFT_CFLAGS"
3218 fi # "${HAVE_XFT}" = "yes"
3219 CPPFLAGS=$OLD_CPPFLAGS
3222 fi # "$HAVE_XFT" != no
3223 fi # "x${with_xft}" != "xno"
3225 ## We used to allow building with FreeType and without Xft.
3226 ## However, the ftx font backend driver is not in good shape.
3227 if test "$HAVE_XFT" != "yes"; then
3228 dnl For the "Does Emacs use" message at the end.
3232 dnl Strict linkers fail with
3233 dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
3234 dnl if -lfreetype is not specified.
3235 dnl The following is needed to set FREETYPE_LIBS.
3236 EMACS_CHECK_MODULES([FREETYPE], [freetype2])
3238 test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(libxft requires libfreetype)
3242 if test "${HAVE_FREETYPE}" = "yes"; then
3243 AC_DEFINE(HAVE_FREETYPE, 1,
3244 [Define to 1 if using the freetype and fontconfig libraries.])
3245 if test "${with_libotf}" != "no"; then
3246 EMACS_CHECK_MODULES([LIBOTF], [libotf])
3247 if test "$HAVE_LIBOTF" = "yes"; then
3248 AC_DEFINE(HAVE_LIBOTF, 1, [Define to 1 if using libotf.])
3249 AC_CHECK_LIB(otf, OTF_get_variation_glyphs,
3250 HAVE_OTF_GET_VARIATION_GLYPHS=yes,
3251 HAVE_OTF_GET_VARIATION_GLYPHS=no)
3252 if test "${HAVE_OTF_GET_VARIATION_GLYPHS}" = "yes"; then
3253 AC_DEFINE(HAVE_OTF_GET_VARIATION_GLYPHS, 1,
3254 [Define to 1 if libotf has OTF_get_variation_glyphs.])
3258 dnl FIXME should there be an error if HAVE_FREETYPE != yes?
3259 dnl Does the new font backend require it, or can it work without it?
3263 if test "${HAVE_LIBOTF}" = yes; then
3264 if test "${with_m17n_flt}" != "no"; then
3265 EMACS_CHECK_MODULES([M17N_FLT], [m17n-flt])
3266 if test "$HAVE_M17N_FLT" = "yes"; then
3267 AC_DEFINE(HAVE_M17N_FLT, 1, [Define to 1 if using libm17n-flt.])
3278 ### End of font-backend (under X11) section.
3280 AC_SUBST(FREETYPE_CFLAGS)
3281 AC_SUBST(FREETYPE_LIBS)
3282 AC_SUBST(FONTCONFIG_CFLAGS)
3283 AC_SUBST(FONTCONFIG_LIBS)
3284 AC_SUBST(LIBOTF_CFLAGS)
3285 AC_SUBST(LIBOTF_LIBS)
3286 AC_SUBST(M17N_FLT_CFLAGS)
3287 AC_SUBST(M17N_FLT_LIBS)
3290 if test "${HAVE_X11}" = "yes"; then
3291 if test "${with_cairo}" != "no"; then
3292 CAIRO_REQUIRED=1.12.0
3293 CAIRO_MODULE="cairo >= $CAIRO_REQUIRED"
3294 EMACS_CHECK_MODULES(CAIRO, $CAIRO_MODULE)
3295 if test $HAVE_CAIRO = yes; then
3296 AC_DEFINE(USE_CAIRO, 1, [Define to 1 if using cairo.])
3298 AC_MSG_ERROR([cairo requested but not found.])
3301 CFLAGS="$CFLAGS $CAIRO_CFLAGS"
3302 LIBS="$LIBS $CAIRO_LIBS"
3303 AC_SUBST(CAIRO_CFLAGS)
3304 AC_SUBST(CAIRO_LIBS)
3308 if test "${HAVE_X11}" = "yes"; then
3309 AC_CHECK_HEADER(X11/Xlib-xcb.h,
3310 AC_CHECK_LIB(xcb, xcb_translate_coordinates, HAVE_XCB=yes))
3311 if test "${HAVE_XCB}" = "yes"; then
3312 AC_CHECK_LIB(X11-xcb, XGetXCBConnection, HAVE_X11_XCB=yes)
3313 if test "${HAVE_X11_XCB}" = "yes"; then
3314 AC_DEFINE(USE_XCB, 1,
3315 [Define to 1 if you have the XCB library and X11-XCB library for mixed
3316 X11/XCB programming.])
3317 XCB_LIBS="-lX11-xcb -lxcb"
3323 ### Use -lXpm if available, unless '--with-xpm=no'.
3324 ### mingw32 doesn't use -lXpm, since it loads the library dynamically.
3325 ### The Cygwin-w32 build uses <noX/xpm.h> instead of <X11/xpm.h>, so
3326 ### we need to set LDFLAGS accordingly.
3329 if test "${HAVE_W32}" = "yes" && test "${opsys}" = "cygwin"; then
3330 if test "${with_xpm}" != "no"; then
3331 SAVE_LDFLAGS="$LDFLAGS"
3332 LDFLAGS="$LDFLAGS -L/usr/lib/noX"
3333 AC_CHECK_HEADER(noX/xpm.h,
3334 [AC_CHECK_LIB(Xpm, XpmReadFileToImage, HAVE_XPM=yes)])
3335 if test "${HAVE_XPM}" = "yes"; then
3336 AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
3337 [emacs_cv_cpp_xpm_return_alloc_pixels],
3338 [AC_EGREP_CPP(no_return_alloc_pixels,
3339 [#include "noX/xpm.h"
3340 #ifndef XpmReturnAllocPixels
3341 no_return_alloc_pixels
3343 ], emacs_cv_cpp_xpm_return_alloc_pixels=no,
3344 emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
3346 if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
3348 LDFLAGS="$SAVE_LDFLAGS"
3353 if test "${HAVE_XPM}" = "yes"; then
3354 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3359 if test "${HAVE_X11}" = "yes"; then
3360 dnl Avoid Xpm on AIX unless requested, as it crashes; see Bug#17598.
3361 test "$opsys$with_xpm_set" = aix4-2 && with_xpm=no
3363 if test "${with_xpm}" != "no"; then
3364 AC_CHECK_HEADER(X11/xpm.h,
3365 [AC_CHECK_LIB(Xpm, XpmReadFileToPixmap, HAVE_XPM=yes, , -lX11)])
3366 if test "${HAVE_XPM}" = "yes"; then
3367 AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
3368 [emacs_cv_cpp_xpm_return_alloc_pixels],
3369 [AC_EGREP_CPP(no_return_alloc_pixels,
3370 [#include "X11/xpm.h"
3371 #ifndef XpmReturnAllocPixels
3372 no_return_alloc_pixels
3374 ], emacs_cv_cpp_xpm_return_alloc_pixels=no,
3375 emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
3377 if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
3383 if test "${HAVE_XPM}" = "yes"; then
3384 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3386 elif test "$opsys,$LUCID_LIBW" = aix4-2,-lXaw; then
3387 dnl AIX -lXaw needs -lXpm linked too; see Bug#17598 Message#152.
3392 ### FIXME: Perhaps regroup to minimize code duplication due to MinGW's
3393 ### slightly different requirements wrt image libraries (it doesn't
3394 ### use -lXpm because it loads the xpm shared library dynamically at
3396 if test "${opsys}" = "mingw32"; then
3397 if test "${with_xpm}" != "no"; then
3398 AC_CHECK_HEADER(X11/xpm.h, HAVE_XPM=yes, HAVE_XPM=no, [
3402 if test "${HAVE_XPM}" = "yes"; then
3403 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3409 ### Use -ljpeg if available, unless '--with-jpeg=no'.
3412 if test "${with_jpeg}" != "no"; then
3413 AC_CACHE_CHECK([for jpeglib 6b or later],
3416 for emacs_cv_jpeglib in yes -ljpeg no; do
3417 case $emacs_cv_jpeglib in
3420 *) LIBS="$LIBS $emacs_cv_jpeglib";;
3424 [[#undef HAVE_STDLIB_H /* Avoid config.h/jpeglib.h collision. */
3425 #include <stdio.h> /* jpeglib.h needs FILE and size_t. */
3426 #include <jpeglib.h>
3428 char verify[JPEG_LIB_VERSION < 62 ? -1 : 1];
3429 struct jpeg_decompress_struct cinfo;
3432 jpeg_create_decompress (&cinfo);
3433 WARNMS (&cinfo, JWRN_JPEG_EOF);
3434 jpeg_destroy_decompress (&cinfo);
3436 [emacs_link_ok=yes],
3439 test $emacs_link_ok = yes && break
3441 if test "$emacs_cv_jpeglib" != no; then
3443 AC_DEFINE([HAVE_JPEG], 1,
3444 [Define to 1 if you have the jpeg library (typically -ljpeg).])
3445 ### mingw32 doesn't use -ljpeg, since it loads the library
3446 ### dynamically when needed, and doesn't want a run-time
3447 ### dependency on the jpeglib DLL.
3448 test "$emacs_cv_jpeglib" != yes && test "${opsys}" != "mingw32" \
3449 && LIBJPEG=$emacs_cv_jpeglib
3456 if test "${with_lcms2}" != "no"; then
3458 AC_SEARCH_LIBS([cmsCreateTransform], [lcms2], [HAVE_LCMS2=yes])
3460 case $ac_cv_search_cmsCreateTransform in
3461 -*) LIBLCMS2=$ac_cv_search_cmsCreateTransform ;;
3464 if test "${HAVE_LCMS2}" = "yes"; then
3465 AC_DEFINE([HAVE_LCMS2], 1, [Define to 1 if you have the lcms2 library (-llcms2).])
3467 if test "${opsys}" = "mingw32"; then
3475 if test "${with_zlib}" != "no"; then
3477 AC_SEARCH_LIBS([inflateEnd], [z], [HAVE_ZLIB=yes])
3479 case $ac_cv_search_inflateEnd in
3480 -*) LIBZ=$ac_cv_search_inflateEnd ;;
3483 if test "${HAVE_ZLIB}" = "yes"; then
3484 AC_DEFINE([HAVE_ZLIB], 1, [Define to 1 if you have the zlib library (-lz).])
3485 ### mingw32 doesn't use -lz, since it loads the library dynamically.
3486 if test "${opsys}" = "mingw32"; then
3492 ### Dynamic modules support
3497 cygwin|mingw32) MODULES_SUFFIX=".dll" ;;
3498 *) MODULES_SUFFIX=".so" ;;
3500 if test "${with_modules}" != "no"; then
3506 cygwin|mingw32|darwin)
3510 # BSD systems have dlopen in libc.
3511 AC_CHECK_FUNC([dlopen], [HAVE_MODULES=yes])
3515 if test "${HAVE_MODULES}" = no; then
3516 AC_MSG_ERROR([Dynamic modules are not supported on your system])
3519 LIBS="$LIBS $LIBMODULES"
3520 AC_CHECK_FUNCS([dladdr dlfunc])
3525 if test "${HAVE_MODULES}" = yes; then
3526 MODULES_OBJ="dynlib.o emacs-module.o"
3527 AC_DEFINE(HAVE_MODULES, 1, [Define to 1 if dynamic modules are enabled])
3528 AC_DEFINE_UNQUOTED(MODULES_SUFFIX, "$MODULES_SUFFIX",
3529 [System extension for dynamic libraries])
3531 AC_SUBST(MODULES_OBJ)
3532 AC_SUBST(LIBMODULES)
3533 AC_SUBST(HAVE_MODULES)
3534 AC_SUBST(MODULES_SUFFIX)
3536 AC_CONFIG_FILES([src/emacs-module.h])
3537 AC_SUBST_FILE([module_env_snippet_25])
3538 AC_SUBST_FILE([module_env_snippet_26])
3539 module_env_snippet_25="$srcdir/src/module-env-25.h"
3540 module_env_snippet_26="$srcdir/src/module-env-26.h"
3542 ### Use -lpng if available, unless '--with-png=no'.
3546 if test "${NS_IMPL_COCOA}" = yes; then
3548 elif test "${with_png}" != no; then
3549 # mingw32 loads the library dynamically.
3550 if test "$opsys" = mingw32; then
3551 AC_CHECK_HEADER([png.h], [HAVE_PNG=yes])
3552 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3553 AC_MSG_CHECKING([for png])
3554 png_cflags=`(libpng-config --cflags) 2>&AS_MESSAGE_LOG_FD` &&
3555 png_ldflags=`(libpng-config --ldflags) 2>&AS_MESSAGE_LOG_FD` || {
3556 # libpng-config does not work; configure by hand.
3557 # Debian unstable as of July 2003 has multiple libpngs, and puts png.h
3558 # in /usr/include/libpng.
3559 if test -r /usr/include/libpng/png.h &&
3560 test ! -r /usr/include/png.h; then
3561 png_cflags=-I/usr/include/libpng
3569 CFLAGS="$CFLAGS $png_cflags"
3570 LIBS="$png_ldflags -lz -lm $LIBS"
3572 [AC_LANG_PROGRAM([[#include <png.h>]],
3573 [[return !png_get_channels (0, 0);]])],
3575 PNG_CFLAGS=`AS_ECHO(["$png_cflags"]) | sed -e "$edit_cflags"`
3577 # $LIBPNG requires explicit -lz in some cases.
3578 # We don't know what those cases are, exactly, so play it safe and
3579 # append -lz to any nonempty $LIBPNG, unless we're already using LIBZ.
3580 if test -n "$LIBPNG" && test -z "$LIBZ"; then
3581 LIBPNG="$LIBPNG -lz"
3585 AC_MSG_RESULT([$HAVE_PNG])
3588 if test $HAVE_PNG = yes; then
3589 AC_DEFINE([HAVE_PNG], [1], [Define to 1 if you have the png library.])
3592 CFLAGS="$CFLAGS $PNG_CFLAGS"
3593 AC_CHECK_DECL([png_longjmp],
3595 [AC_DEFINE([PNG_DEPSTRUCT], [],
3596 [Define to empty to suppress deprecation warnings when building
3597 with --enable-gcc-warnings and with libpng versions before 1.5,
3598 which lack png_longjmp.])],
3604 AC_SUBST(PNG_CFLAGS)
3606 ### Use -ltiff if available, unless '--with-tiff=no'.
3607 ### mingw32 doesn't use -ltiff, since it loads the library dynamically.
3610 if test "${opsys}" = "mingw32"; then
3611 if test "${with_tiff}" != "no"; then
3612 AC_CHECK_HEADER(tiffio.h, HAVE_TIFF=yes, HAVE_TIFF=no)
3614 if test "${HAVE_TIFF}" = "yes"; then
3615 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3617 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3618 if test "${with_tiff}" != "no"; then
3619 AC_CHECK_HEADER(tiffio.h,
3621 # At least one tiff package requires the jpeg library.
3622 if test "${HAVE_JPEG}" = yes; then tifflibs="-ljpeg $tifflibs"; fi
3623 AC_CHECK_LIB(tiff, TIFFGetVersion, HAVE_TIFF=yes, , $tifflibs)])
3626 if test "${HAVE_TIFF}" = "yes"; then
3627 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3628 dnl FIXME -lz -lm, as per libpng?
3634 ### Use -lgif or -lungif if available, unless '--with-gif=no'.
3635 ### mingw32 doesn't use -lgif/-lungif, since it loads the library dynamically.
3638 if test "${opsys}" = "mingw32"; then
3639 if test "${with_gif}" != "no"; then
3640 AC_CHECK_HEADER(gif_lib.h, HAVE_GIF=yes, HAVE_GIF=no)
3642 if test "${HAVE_GIF}" = "yes"; then
3643 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3645 elif test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no" \
3646 || test "${HAVE_W32}" = "yes"; then
3647 AC_CHECK_HEADER(gif_lib.h,
3648 # EGifPutExtensionLast only exists from version libungif-4.1.0b1.
3649 # Earlier versions can crash Emacs, but version 5.0 removes EGifPutExtensionLast.
3650 [AC_CHECK_LIB(gif, GifMakeMapObject, HAVE_GIF=yes,
3651 [AC_CHECK_LIB(gif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=maybe)])])
3653 if test "$HAVE_GIF" = yes; then
3655 elif test "$HAVE_GIF" = maybe; then
3656 # If gif_lib.h but no libgif, try libungif.
3657 AC_CHECK_LIB(ungif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=no)
3658 test "$HAVE_GIF" = yes && LIBGIF=-lungif
3661 if test "${HAVE_GIF}" = "yes"; then
3662 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3667 dnl Check for required libraries.
3670 if test "${HAVE_X11}" = "yes"; then
3671 test "${with_xpm}" != "no" && test "${HAVE_XPM}" != "yes" &&
3672 MISSING="libXpm" && WITH_NO="--with-xpm=no"
3673 test "${with_jpeg}" != "no" && test "${HAVE_JPEG}" != "yes" &&
3674 MISSING="$MISSING libjpeg" && WITH_NO="$WITH_NO --with-jpeg=no"
3675 test "${with_png}" != "no" && test "${HAVE_PNG}" != "yes" &&
3676 MISSING="$MISSING libpng" && WITH_NO="$WITH_NO --with-png=no"
3677 test "${with_gif}" != "no" && test "${HAVE_GIF}" != "yes" &&
3678 MISSING="$MISSING libgif/libungif" && WITH_NO="$WITH_NO --with-gif=no"
3679 test "${with_tiff}" != "no" && test "${HAVE_TIFF}" != "yes" &&
3680 MISSING="$MISSING libtiff" && WITH_NO="$WITH_NO --with-tiff=no"
3682 test "${with_gnutls}" != "no" && test "${HAVE_GNUTLS}" != "yes" &&
3683 MISSING="$MISSING gnutls" && WITH_NO="$WITH_NO --with-gnutls=no"
3684 if test "X${MISSING}" != X; then
3685 AC_MSG_ERROR([The following required libraries were not found:
3687 Maybe some development libraries/packages are missing?
3688 If you don't want to link with them give
3690 as options to configure])
3693 ### Use -lgpm if available, unless '--with-gpm=no'.
3696 if test "${with_gpm}" != "no"; then
3697 AC_CHECK_HEADER(gpm.h,
3698 [AC_CHECK_LIB(gpm, Gpm_Open, HAVE_GPM=yes)])
3700 if test "${HAVE_GPM}" = "yes"; then
3701 AC_DEFINE(HAVE_GPM, 1, [Define to 1 if you have the gpm library (-lgpm).])
3707 dnl Check for malloc/malloc.h on darwin
3708 AC_CHECK_HEADERS_ONCE(malloc/malloc.h)
3711 ### Use NeXTstep API to implement GUI.
3712 if test "${HAVE_NS}" = "yes"; then
3713 AC_DEFINE(HAVE_NS, 1, [Define to 1 if you are using the NeXTstep API, either GNUstep or Cocoa on macOS.])
3714 if test "${NS_IMPL_COCOA}" = "yes"; then
3715 AC_DEFINE(NS_IMPL_COCOA, 1, [Define to 1 if you are using NS windowing under macOS.])
3717 if test "${NS_IMPL_GNUSTEP}" = "yes"; then
3718 AC_DEFINE(NS_IMPL_GNUSTEP, 1, [Define to 1 if you are using NS windowing under GNUstep.])
3719 if test $NS_GNUSTEP_CONFIG != yes; then
3720 # See also .m.o rule in src/Makefile.in. */
3721 # FIXME: are all these flags really needed? Document here why. */
3722 GNUSTEP_CFLAGS="-D_REENTRANT -fPIC -fno-strict-aliasing -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
3723 ## Extra CFLAGS applied to src/*.m files.
3724 GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -fgnu-runtime -Wno-import -fconstant-string-class=NSConstantString -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGSWARN -DGSDIAGNOSE"
3730 ### Use session management (-lSM -lICE) if available
3733 if test "${HAVE_X11}" = "yes"; then
3734 AC_CHECK_HEADER(X11/SM/SMlib.h,
3735 [AC_CHECK_LIB(SM, SmcOpenConnection, HAVE_X_SM=yes, , -lICE)])
3737 if test "${HAVE_X_SM}" = "yes"; then
3738 AC_DEFINE(HAVE_X_SM, 1, [Define to 1 if you have the SM library (-lSM).])
3744 ### Use XRandr (-lXrandr) if available
3746 if test "${HAVE_X11}" = "yes"; then
3747 XRANDR_REQUIRED=1.2.2
3748 XRANDR_MODULES="xrandr >= $XRANDR_REQUIRED"
3749 EMACS_CHECK_MODULES([XRANDR], [$XRANDR_MODULES])
3750 if test $HAVE_XRANDR = no; then
3751 # Test old way in case pkg-config doesn't have it (older machines).
3752 # Include Xrender.h by hand to work around bug in older Xrandr.h
3753 # (e.g. RHEL5) and silence (harmless) configure warning (bug#18465).
3754 AC_CHECK_HEADER(X11/extensions/Xrandr.h,
3755 [AC_CHECK_LIB(Xrandr, XRRGetScreenResources, HAVE_XRANDR=yes)],
3756 [], [AC_INCLUDES_DEFAULT
3757 #include <X11/extensions/Xrender.h>])
3758 if test $HAVE_XRANDR = yes; then
3759 XRANDR_LIBS=-lXrandr
3762 if test $HAVE_XRANDR = yes; then
3763 AC_DEFINE(HAVE_XRANDR, 1, [Define to 1 if you have the XRandr extension.])
3766 AC_SUBST(XRANDR_CFLAGS)
3767 AC_SUBST(XRANDR_LIBS)
3769 ### Use Xinerama (-lXinerama) if available
3771 if test "${HAVE_X11}" = "yes"; then
3772 XINERAMA_REQUIRED=1.0.2
3773 XINERAMA_MODULES="xinerama >= $XINERAMA_REQUIRED"
3774 EMACS_CHECK_MODULES([XINERAMA], [$XINERAMA_MODULES])
3775 if test $HAVE_XINERAMA = no; then
3776 # Test old way in case pkg-config doesn't have it (older machines).
3777 AC_CHECK_HEADER(X11/extensions/Xinerama.h,
3778 [AC_CHECK_LIB(Xinerama, XineramaQueryExtension, HAVE_XINERAMA=yes)])
3779 if test $HAVE_XINERAMA = yes; then
3780 XINERAMA_LIBS=-lXinerama
3783 if test $HAVE_XINERAMA = yes; then
3784 AC_DEFINE(HAVE_XINERAMA, 1, [Define to 1 if you have the Xinerama extension.])
3787 AC_SUBST(XINERAMA_CFLAGS)
3788 AC_SUBST(XINERAMA_LIBS)
3790 ### Use Xfixes (-lXfixes) if available
3792 if test "${HAVE_X11}" = "yes"; then
3793 XFIXES_REQUIRED=4.0.0
3794 XFIXES_MODULES="xfixes >= $XFIXES_REQUIRED"
3795 EMACS_CHECK_MODULES([XFIXES], [$XFIXES_MODULES])
3796 if test $HAVE_XFIXES = no; then
3797 # Test old way in case pkg-config doesn't have it (older machines).
3798 AC_CHECK_HEADER(X11/extensions/Xfixes.h,
3799 [AC_CHECK_LIB(Xfixes, XFixesHideCursor, HAVE_XFIXES=yes)])
3800 if test $HAVE_XFIXES = yes; then
3801 XFIXES_LIBS=-lXfixes
3804 if test $HAVE_XFIXES = yes; then
3805 AC_DEFINE(HAVE_XFIXES, 1, [Define to 1 if you have the Xfixes extension.])
3808 AC_SUBST(XFIXES_CFLAGS)
3809 AC_SUBST(XFIXES_LIBS)
3811 ### Use Xdbe (-lXdbe) if available
3813 if test "${HAVE_X11}" = "yes"; then
3814 AC_CHECK_HEADER(X11/extensions/Xdbe.h,
3815 [AC_CHECK_LIB(Xext, XdbeAllocateBackBufferName, HAVE_XDBE=yes)],
3817 [#include <X11/Xlib.h>
3819 if test $HAVE_XDBE = yes; then
3822 if test $HAVE_XDBE = yes; then
3823 AC_DEFINE(HAVE_XDBE, 1, [Define to 1 if you have the Xdbe extension.])
3826 AC_SUBST(XDBE_CFLAGS)
3829 ### Use libxml (-lxml2) if available
3830 ### mingw32 doesn't use -lxml2, since it loads the library dynamically.
3832 if test "${with_xml2}" != "no"; then
3833 ### I'm not sure what the version number should be, so I just guessed.
3834 EMACS_CHECK_MODULES([LIBXML2], [libxml-2.0 > 2.6.17])
3835 # Built-in libxml2 on OS X 10.8 lacks libxml-2.0.pc.
3836 if test "${HAVE_LIBXML2}" != "yes" && test "$opsys" = "darwin"; then
3837 SAVE_CPPFLAGS="$CPPFLAGS"
3838 if test -z "$xcsdkdir" -a -n "$XCRUN" -a ! -d /usr/include; then
3839 dnl /usr/include is not found. Try Xcode SDK dir if it is sane.
3840 xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
3842 *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
3846 CPPFLAGS="$CPPFLAGS -I$xcsdkdir/usr/include/libxml2"
3847 AC_CHECK_HEADER(libxml/HTMLparser.h,
3848 [AC_CHECK_DECL(HTML_PARSE_RECOVER, HAVE_LIBXML2=yes, ,
3849 [#include <libxml/HTMLparser.h>])])
3850 CPPFLAGS="$SAVE_CPPFLAGS"
3851 if test "${HAVE_LIBXML2}" = "yes"; then
3852 LIBXML2_CFLAGS="-I'$xcsdkdir/usr/include/libxml2'"
3853 LIBXML2_LIBS="-lxml2"
3856 if test "${HAVE_LIBXML2}" = "yes"; then
3857 if test "${opsys}" != "mingw32"; then
3858 AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no,
3863 if test "${HAVE_LIBXML2}" = "yes"; then
3864 AC_DEFINE(HAVE_LIBXML2, 1, [Define to 1 if you have the libxml library (-lxml2).])
3871 AC_SUBST(LIBXML2_LIBS)
3872 AC_SUBST(LIBXML2_CFLAGS)
3876 if test ! "$with_mailutils"; then
3877 # Check for mail-locking functions in a "mail" library. Probably this should
3878 # have the same check as for liblockfile below.
3879 AC_CHECK_LIB([mail], [maillock], [have_mail=yes], [have_mail=no])
3880 if test $have_mail = yes; then
3882 AC_DEFINE([HAVE_LIBMAIL], [1],
3883 [Define to 1 if you have the 'mail' library (-lmail).])
3886 LIBS="$LIBS_MAIL $LIBS"
3887 AC_CHECK_FUNCS([touchlock])
3890 dnl Debian, at least:
3891 AC_CHECK_LIB([lockfile], [maillock], [have_lockfile=yes], [have_lockfile=no])
3892 if test $have_lockfile = yes; then
3893 LIBS_MAIL=-llockfile
3894 AC_DEFINE([HAVE_LIBLOCKFILE], [1],
3895 [Define to 1 if you have the 'lockfile' library (-llockfile).])
3897 # If we have the shared liblockfile, assume we must use it for mail
3898 # locking (e.g. Debian). If we couldn't link against liblockfile
3899 # (no liblockfile.a installed), ensure that we don't need to.
3900 dnl This works for files generally, not just executables.
3901 dnl Should we look elsewhere for it? Maybe examine /etc/ld.so.conf?
3902 AC_CHECK_PROG([liblockfile], [liblockfile.so], [yes], [no],
3903 [/usr/lib:/lib:/usr/local/lib:$LD_LIBRARY_PATH])
3904 if test "$ac_cv_prog_liblockfile" = yes; then
3905 AC_MSG_ERROR([Shared liblockfile found but can't link against it.
3906 This probably means that movemail could lose mail.
3907 There may be a 'development' package to install containing liblockfile.])
3910 AC_CHECK_HEADERS([maillock.h])
3912 ## Define MAIL_USE_FLOCK (or LOCKF) if the mailer uses flock (or lockf) to
3913 ## interlock access to the mail spool. The alternative is a lock file named
3914 ## /usr/spool/mail/$USER.lock.
3917 aix4-2) mail_lock="lockf" ;;
3919 gnu|freebsd|dragonfly|netbsd|openbsd|darwin) mail_lock="flock" ;;
3921 ## On GNU/Linux systems, both methods are used by various mail programs.
3922 ## I assume most people are using newer mailers that have heard of flock.
3923 ## Change this if you need to.
3924 ## Debian contains a patch which says: "On Debian/GNU/Linux systems,
3925 ## configure gets the right answers, and that means *NOT* using flock.
3926 ## Using flock is guaranteed to be the wrong thing. See Debian Policy
3927 ## for details." and then uses '#ifdef DEBIAN'. Unfortunately the
3928 ## Debian maintainer hasn't provided a clean fix for Emacs.
3929 ## movemail.c will use 'maillock' when MAILDIR, HAVE_LIBMAIL and
3930 ## HAVE_MAILLOCK_H are defined, so the following appears to be the
3931 ## correct logic. -- fx
3932 ## We must check for HAVE_LIBLOCKFILE too, as movemail does.
3933 ## liblockfile is a Free Software replacement for libmail, used on
3934 ## Debian systems and elsewhere. -rfr.
3937 if test $have_mail = yes || test $have_lockfile = yes; then
3938 test $ac_cv_header_maillock_h = yes && mail_lock=no
3942 mail_lock="none-needed" ;;
3946 flock) AC_DEFINE([MAIL_USE_FLOCK], [1],
3947 [Define if the mailer uses flock to interlock the mail spool.]);;
3949 lockf) AC_DEFINE([MAIL_USE_LOCKF], [1],
3950 [Define if the mailer uses lockf to interlock the mail spool.]);;
3954 *) BLESSMAIL_TARGET="need-blessmail" ;;
3957 AC_SUBST([BLESSMAIL_TARGET])
3958 AC_SUBST([LIBS_MAIL])
3961 LIBS="$LIB_PTHREAD $LIB_MATH $LIBS"
3962 AC_CHECK_FUNCS(accept4 fchdir gethostname \
3963 getrusage get_current_dir_name \
3964 lrand48 random rint trunc \
3965 select getpagesize setlocale newlocale \
3966 getrlimit setrlimit shutdown \
3967 pthread_sigmask strsignal setitimer \
3968 sendto recvfrom getsockname getifaddrs freeifaddrs \
3970 getpwent endpwent getgrent endgrent \
3971 cfmakeraw cfsetspeed __executable_start log2 prctl)
3974 dnl No need to check for posix_memalign if aligned_alloc works.
3975 AC_CHECK_FUNCS([aligned_alloc posix_memalign], [break])
3976 AC_CHECK_DECLS([aligned_alloc], [], [], [[#include <stdlib.h>]])
3978 dnl Cannot use AC_CHECK_FUNCS
3979 AC_CACHE_CHECK([for __builtin_frame_address],
3980 [emacs_cv_func___builtin_frame_address],
3981 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_frame_address (0);])],
3982 [emacs_cv_func___builtin_frame_address=yes],
3983 [emacs_cv_func___builtin_frame_address=no])])
3984 if test $emacs_cv_func___builtin_frame_address = yes; then
3985 AC_DEFINE([HAVE___BUILTIN_FRAME_ADDRESS], 1,
3986 [Define to 1 if you have the '__builtin_frame_address' function.])
3988 AC_CACHE_CHECK([for __builtin_unwind_init],
3989 emacs_cv_func___builtin_unwind_init,
3990 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_unwind_init ();])],
3991 emacs_cv_func___builtin_unwind_init=yes,
3992 emacs_cv_func___builtin_unwind_init=no)])
3993 if test $emacs_cv_func___builtin_unwind_init = yes; then
3994 AC_DEFINE(HAVE___BUILTIN_UNWIND_INIT, 1,
3995 [Define to 1 if you have the '__builtin_unwind_init' function.])
3998 AC_CHECK_HEADERS_ONCE(sys/un.h)
4003 AC_CHECK_FUNCS(grantpt)
4005 # PTY-related GNU extensions.
4006 AC_CHECK_FUNCS(getpt posix_openpt)
4008 dnl Run a test program that contains a call to tputs, a call that is
4009 dnl never executed. This tests whether a pre-'main' dynamic linker
4010 dnl works with the library. It's too much trouble to actually call
4011 dnl tputs in the test program, due to portability hassles. When
4012 dnl cross-compiling, assume the test program will run if it links.
4013 AC_DEFUN([tputs_link_source], [
4015 [[extern void tputs (const char *, int, int (*)(int));
4016 int main (int argc, char **argv)
4019 tputs (argv[0], 0, 0);
4023 # Check this now, so that we will NOT find the above functions in ncurses.
4024 # That is because we have not set up to link ncurses in lib-src.
4025 # It's better to believe a function is not available
4026 # than to expect to find it in ncurses.
4027 # Also we need tputs and friends to be able to build at all.
4028 AC_CACHE_CHECK([for library containing tputs], [emacs_cv_tputs_lib],
4029 [if test "${opsys}" = "mingw32"; then
4030 emacs_cv_tputs_lib='none required'
4032 # Maybe curses should be tried earlier?
4033 # See https://debbugs.gnu.org/9736#35
4034 for tputs_library in '' tinfo ncurses terminfo termcap curses; do
4036 if test -z "$tputs_library"; then
4037 emacs_cv_tputs_lib='none required'
4039 emacs_cv_tputs_lib=-l$tputs_library
4040 LIBS="$emacs_cv_tputs_lib $LIBS"
4042 AC_RUN_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no],
4043 [AC_LINK_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no])])
4045 if test "X$emacs_cv_tputs_lib" != Xno; then
4050 AS_CASE(["$emacs_cv_tputs_lib"],
4051 [no], [AC_MSG_ERROR([The required function 'tputs' was not found in any library.
4052 The following libraries were tried (in order):
4053 libtinfo, libncurses, libterminfo, libtermcap, libcurses
4054 Please try installing whichever of these libraries is most appropriate
4055 for your system, together with its header files.
4056 For example, a libncurses-dev(el) or similar package.])],
4057 [-l*], [LIBS_TERMCAP=$emacs_cv_tputs_lib],
4058 [*], [LIBS_TERMCAP=])
4060 ## Use termcap instead of terminfo?
4061 ## Only true for: freebsd < 40000, ms-w32, msdos, netbsd < 599002500.
4063 ## FIXME? In the cases below where we unconditionally set
4064 ## LIBS_TERMCAP="-lncurses", this overrides LIBS_TERMCAP = -ltinfo,
4065 ## if that was found above to have tputs.
4066 ## Should we use the gnu* logic everywhere?
4068 ## darwin: Prevents crashes when running Emacs in Terminal.app under 10.2.
4069 ## The ncurses library has been moved out of the System framework in
4070 ## Mac OS X 10.2. So if configure detects it, set the command-line
4071 ## option to use it.
4072 darwin) LIBS_TERMCAP="-lncurses" ;;
4074 gnu*) test -z "$LIBS_TERMCAP" && LIBS_TERMCAP="-lncurses" ;;
4077 AC_MSG_CHECKING([whether FreeBSD is new enough to use terminfo])
4078 AC_CACHE_VAL(emacs_cv_freebsd_terminfo,
4079 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <osreldate.h>]],
4080 [[#if __FreeBSD_version < 400000
4083 ]])], emacs_cv_freebsd_terminfo=yes, emacs_cv_freebsd_terminfo=no)])
4085 AC_MSG_RESULT($emacs_cv_freebsd_terminfo)
4087 if test $emacs_cv_freebsd_terminfo = yes; then
4088 LIBS_TERMCAP="-lncurses"
4091 LIBS_TERMCAP="-ltermcap"
4101 if test "x$LIBS_TERMCAP" != "x-lterminfo"; then
4103 LIBS_TERMCAP="-ltermcap"
4107 openbsd | dragonfly) LIBS_TERMCAP="-lncurses" ;;
4109 ## hpux: Make sure we get select from libc rather than from libcurses
4110 ## because libcurses on HPUX 10.10 has a broken version of select.
4111 ## We used to use -lc -lcurses, but this may be cleaner.
4112 ## FIXME? But TERMINFO = yes on hpux (it used to be explicitly
4113 # set that way, now it uses the default). Isn't this a contradiction?
4114 hpux*) LIBS_TERMCAP="-ltermcap" ;;
4118 TERMCAP_OBJ=tparam.o
4119 if test $TERMINFO = yes; then
4120 AC_DEFINE(TERMINFO, 1, [Define to 1 if you use terminfo instead of termcap.])
4121 TERMCAP_OBJ=terminfo.o
4123 if test "X$LIBS_TERMCAP" = "X-lncurses"; then
4124 AC_DEFINE(USE_NCURSES, 1, [Define to 1 if you use ncurses.])
4126 AC_SUBST(LIBS_TERMCAP)
4127 AC_SUBST(TERMCAP_OBJ)
4129 # GNU/Linux-specific timer functions.
4130 AC_CACHE_CHECK([for timerfd interface], [emacs_cv_have_timerfd],
4132 [AC_LANG_PROGRAM([[#include <sys/timerfd.h>
4134 [[timerfd_create (CLOCK_REALTIME,
4135 TFD_CLOEXEC | TFD_NONBLOCK);
4136 timerfd_settime (0, TFD_TIMER_ABSTIME, 0, 0);]])],
4137 [emacs_cv_have_timerfd=yes],
4138 [emacs_cv_have_timerfd=no])])
4139 if test "$emacs_cv_have_timerfd" = yes; then
4140 AC_DEFINE([HAVE_TIMERFD], 1,
4141 [Define to 1 if timerfd functions are supported as in GNU/Linux.])
4144 # Alternate stack for signal handlers.
4145 AC_CACHE_CHECK([whether signals can be handled on alternate stack],
4146 [emacs_cv_alternate_stack],
4148 [AC_LANG_PROGRAM([[#include <signal.h>
4151 struct sigaction sa;
4152 ss.ss_sp = malloc (SIGSTKSZ);
4153 ss.ss_size = SIGSTKSZ;
4154 sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
4155 sigaltstack (&ss, 0);
4156 sigaction (SIGSEGV, &sa, 0);]])],
4157 [emacs_cv_alternate_stack=yes],
4158 [emacs_cv_alternate_stack=no])])
4160 # Do we need the Hesiod library to provide the support routines?
4161 dnl FIXME? Should we be skipping this on Darwin too?
4164 if test "$with_hesiod" != no ; then
4165 # Don't set $LIBS here -- see comments above. FIXME which comments?
4167 AC_CHECK_FUNC(res_send, , [AC_CHECK_FUNC(__res_send, ,
4168 [AC_CHECK_LIB(resolv, res_send, resolv=yes,
4169 [AC_CHECK_LIB(resolv, __res_send, resolv=yes)])])])
4170 if test "$resolv" = yes ; then
4176 AC_CHECK_FUNC(hes_getmailhost, , [AC_CHECK_LIB(hesiod, hes_getmailhost,
4177 hesiod=yes, :, $RESOLVLIB)])
4179 if test x"$hesiod" = xyes; then
4181 LIBRESOLV=$RESOLVLIB
4187 # These tell us which Kerberos-related libraries to use.
4194 if test "${with_kerberos}" != no; then
4196 AC_CHECK_LIB(com_err, com_err, have_com_err=yes, have_com_err=no)
4197 if test $have_com_err = yes; then
4198 COM_ERRLIB=-lcom_err
4199 LIBS="$COM_ERRLIB $LIBS"
4201 AC_CHECK_LIB(crypto, mit_des_cbc_encrypt, have_crypto=yes, have_crypto=no)
4202 if test $have_crypto = yes; then
4204 LIBS="$CRYPTOLIB $LIBS"
4206 AC_CHECK_LIB(k5crypto, mit_des_cbc_encrypt, have_k5crypto=yes, have_k5crypto=no)
4207 if test $have_k5crypto = yes; then
4208 CRYPTOLIB=-lk5crypto
4209 LIBS="$CRYPTOLIB $LIBS"
4211 AC_CHECK_LIB(krb5, krb5_init_context, have_krb5=yes, have_krb5=no)
4212 if test $have_krb5=yes; then
4214 LIBS="$KRB5LIB $LIBS"
4216 dnl FIXME Simplify. Does not match 22 logic, thanks to default_off?
4217 if test "${with_kerberos5}" = no; then
4218 AC_CHECK_LIB(des425, des_cbc_encrypt, have_des425=yes, have_des425=no )
4219 if test $have_des425 = yes; then
4221 LIBS="$DESLIB $LIBS"
4223 AC_CHECK_LIB(des, des_cbc_encrypt, have_des=yes, have_des=no)
4224 if test $have_des = yes; then
4226 LIBS="$DESLIB $LIBS"
4229 AC_CHECK_LIB(krb4, krb_get_cred, have_krb4=yes, have_krb4=no)
4230 if test $have_krb4 = yes; then
4232 LIBS="$KRB4LIB $LIBS"
4234 AC_CHECK_LIB(krb, krb_get_cred, have_krb=yes, have_krb=no)
4235 if test $have_krb = yes; then
4237 LIBS="$KRB4LIB $LIBS"
4242 if test "${with_kerberos5}" != no; then
4243 AC_CHECK_HEADERS(krb5.h,
4244 [AC_CHECK_MEMBERS([krb5_error.text, krb5_error.e_text],,,
4245 [#include <krb5.h>])])
4247 AC_CHECK_HEADERS(krb.h,,
4248 [AC_CHECK_HEADERS(kerberosIV/krb.h,,
4249 [AC_CHECK_HEADERS(kerberos/krb.h)])])
4251 AC_CHECK_HEADERS(com_err.h)
4255 AC_SUBST(COM_ERRLIB)
4261 AC_CHECK_HEADERS(valgrind/valgrind.h)
4263 AC_CHECK_MEMBERS([struct unipair.unicode], [], [], [[#include <linux/kd.h>]])
4265 AC_CHECK_FUNCS_ONCE([sbrk])
4268 AC_CHECK_FUNC(socket, , ok_so_far=no)
4269 if test $ok_so_far = yes; then
4270 AC_CHECK_HEADER(netinet/in.h, , ok_so_far=no)
4272 if test $ok_so_far = yes; then
4273 AC_CHECK_HEADER(arpa/inet.h, , ok_so_far=no)
4275 if test $ok_so_far = yes; then
4276 dnl Fixme: Not used. Should this be HAVE_SOCKETS?
4277 AC_DEFINE(HAVE_INET_SOCKETS, 1,
4278 [Define to 1 if you have inet sockets.])
4283 AC_CHECK_FUNCS(snprintf)
4285 dnl Check for glib. This differs from other library checks in that
4286 dnl Emacs need not link to glib unless some other library is already
4287 dnl linking to glib. Although glib provides no facilities that Emacs
4288 dnl needs for its own purposes, when glib is present Emacs needs to
4289 dnl use primitives like g_main_context_query to avoid clashing with
4290 dnl glib at a low level.
4292 dnl Check this late, since it depends on $GTK_CFLAGS etc.
4294 AC_CACHE_CHECK([whether GLib is linked in], [emacs_cv_links_glib],
4295 [OLDCFLAGS="$CFLAGS"
4297 CFLAGS="$CFLAGS $GTK_CFLAGS $RSVG_CFLAGS $DBUS_CFLAGS $SETTINGS_CFLAGS"
4298 LIBS="$LIBS $GTK_LIBS $RSVG_LIBS $DBUS_LIBS $SETTINGS_LIBS"
4299 CFLAGS="$CFLAGS $NOTIFY_CFLAGS $CAIRO_CFLAGS"
4300 LIBS="$LIBS $NOTIFY_LIBS $CAIRO_LIBS"
4301 AC_LINK_IFELSE([AC_LANG_PROGRAM(
4304 [[g_print ("Hello world");]])],
4305 [emacs_cv_links_glib=yes],
4306 [emacs_cv_links_glib=no])
4309 if test "${emacs_cv_links_glib}" = "yes"; then
4310 AC_DEFINE(HAVE_GLIB, 1, [Define to 1 if GLib is linked in.])
4311 if test "$HAVE_NS" = no;then
4317 dnl Adapted from Haible's version.
4318 AC_CACHE_CHECK([for nl_langinfo and CODESET], emacs_cv_langinfo_codeset,
4319 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
4320 [[char* cs = nl_langinfo(CODESET);]])],
4321 emacs_cv_langinfo_codeset=yes,
4322 emacs_cv_langinfo_codeset=no)
4324 if test $emacs_cv_langinfo_codeset = yes; then
4325 AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
4326 [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
4331 dnl Fixme: AC_SYS_POSIX_TERMIOS should probably be used, but it's not clear
4332 dnl how the tty code is related to POSIX and/or other versions of termios.
4333 dnl The following looks like a useful start.
4335 dnl AC_SYS_POSIX_TERMIOS
4336 dnl if test $ac_cv_sys_posix_termios = yes; then
4337 dnl AC_DEFINE(HAVE_TERMIOS, 1, [Define to 1 if you have POSIX-style functions
4338 dnl and macros for terminal control.])
4339 dnl AC_DEFINE(HAVE_TCATTR, 1, [Define to 1 if you have tcgetattr and tcsetattr.])
4342 dnl Turned on June 1996 supposing nobody will mind it.
4343 dnl MinGW emulates passwd database, so this feature doesn't make sense there.
4344 if test "${opsys}" != "mingw32"; then
4345 AC_DEFINE(AMPERSAND_FULL_NAME, 1, [Define to use the convention that &
4346 in the full name stands for the login id.])
4349 dnl Everybody supports this, except MS.
4350 dnl Seems like the kind of thing we should be testing for, though.
4351 ## Note: PTYs are broken on darwin <6. Use at your own risk.
4352 if test "${opsys}" != "mingw32"; then
4353 AC_DEFINE(HAVE_PTYS, 1, [Define if the system supports pty devices.])
4356 dnl Everybody supports this, except MS-DOS.
4357 dnl Seems like the kind of thing we should be testing for, though.
4358 dnl Compare with HAVE_INET_SOCKETS (which is unused...) above.
4359 AC_DEFINE(HAVE_SOCKETS, 1, [Define if the system supports
4360 4.2-compatible sockets.])
4362 AH_TEMPLATE(INTERNAL_TERMINAL, [This is substituted when $TERM is "internal".])
4364 AH_TEMPLATE(NULL_DEVICE, [Name of the file to open to get
4365 a null file, or a data sink.])
4366 if test "${opsys}" = "mingw32"; then
4367 AC_DEFINE(NULL_DEVICE, ["NUL:"])
4369 AC_DEFINE(NULL_DEVICE, ["/dev/null"])
4372 if test "${opsys}" = "mingw32"; then
4377 AC_DEFINE_UNQUOTED(SEPCHAR, ['$SEPCHAR'], [Character that separates PATH elements.])
4378 dnl This is for MinGW, and is used in test/Makefile.in.
4379 dnl The MSYS Bash has heuristics for replacing ':' with ';' when it
4380 dnl decides that a command-line argument to be passed to a MinGW program
4381 dnl is a PATH-style list of directories. But that heuristics plays it
4382 dnl safe, and only does the replacement when it is _absolutely_ sure it
4383 dnl sees a colon-separated list of file names; e.g. ":." is left alone,
4384 dnl which breaks in-tree builds. So we do this manually instead.
4385 dnl Note that we cannot rely on PATH_SEPARATOR, as that one will always
4386 dnl be computed as ':' in MSYS Bash.
4389 dnl Everybody supports this, except MS-DOS.
4390 AC_DEFINE(subprocesses, 1, [Define to enable asynchronous subprocesses.])
4392 AC_DEFINE(USER_FULL_NAME, [pw->pw_gecos], [How to get a user's full name.])
4395 AC_DEFINE(DIRECTORY_SEP, ['/'],
4396 [Character that separates directories in a file name.])
4398 if test "${opsys}" = "mingw32"; then
4399 AC_DEFINE(IS_DEVICE_SEP(_c_), [((_c_) == ':')],
4400 [Returns true if character is a device separator.])
4402 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == '/' || (_c_) == '\\')],
4403 [Returns true if character is a directory separator.])
4405 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP(_c_))],
4406 [Returns true if character is any form of separator.])
4408 AC_DEFINE(IS_DEVICE_SEP(_c_), 0,
4409 [Returns true if character is a device separator.])
4411 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == DIRECTORY_SEP)],
4412 [Returns true if character is a directory separator.])
4414 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_))],
4415 [Returns true if character is any form of separator.])
4418 if test "$USE_X_TOOLKIT" != "none"; then
4422 dnl Assar Westerlund <assar@sics.se> says this is necessary
4423 dnl for HP-UX 10.20, and that it works for HP-UX 0 as well.
4427 if test "$have_editres" != no && test ! -z "$LIBXMU"; then
4429 dnl See libXmu.a check above.
4430 if test x$HAVE_X11XTR6 = xyes; then
4431 LIBS="-lXt -lSM -lICE $LIBXMU"
4433 OTHERLIBS="-lXt -$LIBXMU"
4436 [#include <X11/Intrinsic.h>
4437 #include <X11/Xmu/Editres.h>],
4438 [_XEditResCheckMessages (0, 0, 0, 0);],
4439 [AC_DEFINE([X_TOOLKIT_EDITRES], 1,
4440 [Define to 1 if we should use XEditRes.])])
4447 dnl Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
4448 dnl instead, there's a system variable _sys_nsig. Unfortunately, we
4449 dnl need the constant to dimension an array. So wire in the appropriate
4451 AC_DEFINE(NSIG_MINIMUM, 32, [Minimum value of NSIG.])
4455 emacs_broken_SIGIO=no
4458 dnl SIGIO exists, but the feature doesn't work in the way Emacs needs.
4459 dnl See eg <http://article.gmane.org/gmane.os.openbsd.ports/46831>.
4460 hpux* | nacl | openbsd | sol2* | unixware )
4461 emacs_broken_SIGIO=yes
4465 dnl On AIX Emacs uses the gmalloc.c malloc implementation. But given
4466 dnl the way this system works, libc functions that return malloced
4467 dnl memory use the libc malloc implementation. Calling xfree or
4468 dnl xrealloc on the results of such functions results in a crash.
4470 dnl One solution for this could be to define SYSTEM_MALLOC in configure,
4471 dnl but that does not currently work on this system.
4473 dnl It is possible to completely override the malloc implementation on
4474 dnl AIX, but that involves putting the malloc functions in a shared
4475 dnl library and setting the MALLOCTYPE environment variable to point to
4476 dnl that shared library.
4478 dnl Emacs currently calls xrealloc on the results of get_current_dir name,
4479 dnl to avoid a crash just use the Emacs implementation for that function.
4481 dnl FIXME We could change the AC_CHECK_FUNCS call near the start
4482 dnl of this file, so that we do not check for get_current_dir_name
4483 dnl on AIX. But that might be fragile if something else ends
4484 dnl up testing for get_current_dir_name as a dependency.
4485 AC_DEFINE(BROKEN_GET_CURRENT_DIR_NAME, 1, [Define if
4486 get_current_dir_name should not be used.])
4490 dnl Circumvent a bug in FreeBSD. In the following sequence of
4491 dnl writes/reads on a PTY, read(2) returns bogus data:
4493 dnl write(2) 1022 bytes
4494 dnl write(2) 954 bytes, get EAGAIN
4495 dnl read(2) 1024 bytes in process_read_output
4496 dnl read(2) 11 bytes in process_read_output
4498 dnl That is, read(2) returns more bytes than have ever been written
4499 dnl successfully. The 1033 bytes read are the 1022 bytes written
4500 dnl successfully after processing (for example with CRs added if the
4501 dnl terminal is set up that way which it is here). The same bytes will
4502 dnl be seen again in a later read(2), without the CRs.
4503 AC_DEFINE(BROKEN_PTY_READ_AFTER_EAGAIN, 1, [Define on FreeBSD to
4504 work around an issue when reading from a PTY.])
4510 dnl FIXME Can't we test if this exists (eg /proc/$$)?
4511 AC_DEFINE(HAVE_PROCFS, 1, [Define if you have the /proc filesystem.])
4516 darwin | dragonfly | freebsd | netbsd | openbsd )
4517 AC_DEFINE(DONT_REOPEN_PTY, 1, [Define if process.c does not need to
4518 close a pty to make it a controlling terminal (it is already a
4519 controlling terminal of the subprocess, because we did ioctl TIOCSCTTY).])
4523 dnl FIXME Surely we can test for this rather than hard-code it.
4525 netbsd | openbsd) sound_device="/dev/audio" ;;
4526 *) sound_device="/dev/dsp" ;;
4530 AC_DEFINE_UNQUOTED(DEFAULT_SOUND_DEVICE, "$sound_device",
4531 [Name of the default sound device.])
4534 dnl Emacs can read input using SIGIO and buffering characters itself,
4535 dnl or using CBREAK mode and making C-g cause SIGINT.
4536 dnl The choice is controlled by the variable interrupt_input.
4538 dnl Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
4540 dnl Emacs uses the presence of the USABLE_SIGIO macro
4541 dnl to indicate whether or not signal-driven I/O is possible. It uses
4542 dnl INTERRUPT_INPUT to decide whether to use it by default.
4544 dnl SIGIO can be used only on systems that implement it (4.2 and 4.3).
4545 dnl CBREAK mode has two disadvantages
4546 dnl 1) At least in 4.2, it is impossible to handle the Meta key properly.
4547 dnl I hear that in system V this problem does not exist.
4548 dnl 2) Control-G causes output to be discarded.
4549 dnl I do not know whether this can be fixed in system V.
4551 dnl Another method of doing input is planned but not implemented.
4552 dnl It would have Emacs fork off a separate process
4553 dnl to read the input and send it to the true Emacs process
4556 darwin | gnu-linux | gnu-kfreebsd )
4557 AC_DEFINE(INTERRUPT_INPUT, 1, [Define to read input using SIGIO.])
4562 dnl If the system's imake configuration file defines 'NeedWidePrototypes'
4563 dnl as 'NO', we must define NARROWPROTO manually. Such a define is
4564 dnl generated in the Makefile generated by 'xmkmf'. If we don't define
4565 dnl NARROWPROTO, we will see the wrong function prototypes for X functions
4566 dnl taking float or double parameters.
4568 cygwin|gnu|gnu-linux|gnu-kfreebsd|freebsd|netbsd|openbsd)
4569 AC_DEFINE(NARROWPROTO, 1, [Define if system's imake configuration
4570 file defines 'NeedWidePrototypes' as 'NO'.])
4575 dnl Used in process.c, this must be a loop, even if it only runs once.
4576 AH_TEMPLATE(PTY_ITERATION, [How to iterate over PTYs.])
4577 dnl Only used if !PTY_ITERATION. Iterate from FIRST_PTY_LETTER to z,
4578 dnl trying suffixes 0-16.
4579 AH_TEMPLATE(FIRST_PTY_LETTER, [Letter to use in finding device name of
4580 first PTY, if PTYs are supported.])
4581 AH_TEMPLATE(PTY_OPEN, [How to open a PTY, if non-standard.])
4582 AH_TEMPLATE(PTY_NAME_SPRINTF, [How to get the device name of the control
4583 end of a PTY, if non-standard.])
4584 AH_TEMPLATE(PTY_TTY_NAME_SPRINTF, [How to get device name of the tty
4585 end of a PTY, if non-standard.])
4589 AC_DEFINE(PTY_ITERATION, [int c; for (c = 0; !c ; c++)])
4590 dnl You allocate a pty by opening /dev/ptc to get the master side.
4591 dnl To get the name of the slave side, you just ttyname() the master side.
4592 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptc");])
4593 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [strcpy (pty_name, ttyname (fd));])
4597 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4598 dnl multi-line AC_DEFINEs are hard. :(
4599 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)])
4600 AC_DEFINE(PTY_NAME_SPRINTF, [])
4601 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
4605 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4608 gnu-linux | gnu-kfreebsd | dragonfly | freebsd | netbsd | darwin | nacl )
4610 if test "x$ac_cv_func_grantpt" = xyes; then
4611 AC_DEFINE(UNIX98_PTYS, 1, [Define if the system has Unix98 PTYs.])
4612 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4613 dnl Note that grantpt and unlockpt may fork. We must block SIGCHLD
4614 dnl to prevent sigchld_handler from intercepting the child's death.
4615 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); }])
4616 dnl if HAVE_POSIX_OPENPT
4617 if test "x$ac_cv_func_posix_openpt" = xyes; then
4618 AC_DEFINE(PTY_OPEN, [do { fd = posix_openpt (O_RDWR | O_CLOEXEC | O_NOCTTY); if (fd < 0 && errno == EINVAL) fd = posix_openpt (O_RDWR | O_NOCTTY); } while (false)])
4619 AC_DEFINE(PTY_NAME_SPRINTF, [])
4621 elif test "x$ac_cv_func_getpt" = xyes; then
4622 AC_DEFINE(PTY_OPEN, [fd = getpt ()])
4623 AC_DEFINE(PTY_NAME_SPRINTF, [])
4625 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4628 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4633 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4634 AC_DEFINE(PTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/ptym/pty%c%x", c, i);])
4635 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/pty/tty%c%x", c, i);])
4639 dnl On SysVr4, grantpt(3) forks a subprocess, so do not use
4640 dnl O_CLOEXEC when opening the pty, and keep the SIGCHLD handler
4641 dnl from intercepting that death. If any child but grantpt's should die
4642 dnl within, it should be caught after sigrelse(2).
4643 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4644 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); }])
4648 dnl Comments are as per sol2*.
4649 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4650 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); }])
4657 dnl This change means that we don't loop through allocate_pty too
4658 dnl many times in the (rare) event of a failure.
4659 AC_DEFINE(FIRST_PTY_LETTER, ['z'])
4660 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4661 dnl Push various streams modules onto a PTY channel. Used in process.c.
4662 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.])
4667 AH_TEMPLATE(SIGNALS_VIA_CHARACTERS, [Make process_send_signal work by
4668 "typing" a signal character on the pty.])
4671 dnl Perry Smith <pedz@ddivt1.austin.ibm.com> says this is correct for AIX.
4672 aix4-2 | cygwin | gnu | dragonfly | freebsd | netbsd | openbsd | darwin )
4673 AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4676 dnl 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works.
4677 dnl FIXME Does gnu-kfreebsd have linux/version.h? It seems unlikely...
4678 gnu-linux | gnu-kfreebsd )
4680 AC_CACHE_CHECK([for signals via characters], [emacs_cv_signals_via_chars],
4681 [AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4682 #include <linux/version.h>
4683 #if LINUX_VERSION_CODE < 0x20400
4684 # error "Linux version too old"
4686 ]], [[]])], emacs_cv_signals_via_chars=yes, emacs_cv_signals_via_chars=no)])
4688 test "$emacs_cv_signals_via_chars" = yes && AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4693 AH_TEMPLATE(TAB3, [Undocumented.])
4696 darwin) AC_DEFINE(TAB3, OXTABS) ;;
4698 gnu | dragonfly | freebsd | netbsd | openbsd )
4699 AC_DEFINE(TABDLY, OXTABS, [Undocumented.])
4700 AC_DEFINE(TAB3, OXTABS)
4703 gnu-linux | gnu-kfreebsd )
4704 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4708 ]], [[]])], AC_DEFINE(GC_MARK_SECONDARY_STACK(),
4709 [do { extern void *__libc_ia64_register_backing_store_base; __builtin_ia64_flushrs (); mark_memory (__libc_ia64_register_backing_store_base, __builtin_ia64_bsp ());} while (false)],
4710 [Mark a secondary stack, like the register stack on the ia64.]), [])
4714 AC_DEFINE(RUN_TIME_REMAP, 1, [Define if emacs.c needs to call
4715 run_time_remap; for HPUX.])
4720 dnl This won't be used automatically yet. We also need to know, at least,
4721 dnl that the stack is continuous.
4722 AH_TEMPLATE(GC_SETJMP_WORKS, [Define if setjmp is known to save all
4723 registers relevant for conservative garbage collection in the jmp_buf.])
4727 dnl Not all the architectures are tested, but there are Debian packages
4728 dnl for SCM and/or Guile on them, so the technique must work. See also
4729 dnl comments in alloc.c concerning setjmp and gcc.
4730 dnl Fixme: it's probably safe to just use the GCC conditional below.
4731 gnu-linux | gnu-kfreebsd )
4732 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4733 #if defined __i386__ || defined __sparc__ || defined __mc68000__ \
4734 || defined __alpha__ || defined __mips__ || defined __s390__ \
4735 || defined __arm__ || defined __powerpc__ || defined __amd64__ \
4736 || defined __ia64__ || defined __sh__
4739 # error "setjmp not known to work on this arch"
4741 ]], [[]])], AC_DEFINE(GC_SETJMP_WORKS, 1))
4746 if test x$GCC = xyes; then
4747 dnl GC_SETJMP_WORKS is nearly always appropriate for GCC.
4748 AC_DEFINE(GC_SETJMP_WORKS, 1)
4751 aix* | dragonfly | freebsd | netbsd | openbsd | sol2* )
4752 AC_DEFINE(GC_SETJMP_WORKS, 1)
4757 dnl In a weird quirk, MS runtime uses _setjmp and longjmp.
4758 AC_CACHE_CHECK([for _setjmp], [emacs_cv_func__setjmp],
4761 [[#include <setjmp.h>
4763 # define _longjmp longjmp
4768 _longjmp (j, 1);]])],
4769 [emacs_cv_func__setjmp=yes],
4770 [emacs_cv_func__setjmp=no])])
4771 if test $emacs_cv_func__setjmp = yes; then
4772 AC_DEFINE([HAVE__SETJMP], 1, [Define to 1 if _setjmp and _longjmp work.])
4775 # We need to preserve signal mask to handle C stack overflows.
4776 AC_CACHE_CHECK([for sigsetjmp], [emacs_cv_func_sigsetjmp],
4779 [[#include <setjmp.h>
4782 if (! sigsetjmp (j, 1))
4783 siglongjmp (j, 1);]])],
4784 [emacs_cv_func_sigsetjmp=yes],
4785 [emacs_cv_func_sigsetjmp=no])])
4786 if test $emacs_cv_func_sigsetjmp = yes; then
4787 AC_DEFINE([HAVE_SIGSETJMP], 1,
4788 [Define to 1 if sigsetjmp and siglongjmp work.])
4791 case $emacs_cv_func_sigsetjmp,$emacs_cv_alternate_stack,$opsys in
4792 yes,yes,* | *,*,mingw32)
4793 AC_DEFINE([HAVE_STACK_OVERFLOW_HANDLING], 1,
4794 [Define to 1 if C stack overflow can be handled in some cases.]);;
4799 dnl TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
4800 dnl subprocesses the usual way. But TIOCSIGNAL does work for PTYs,
4801 dnl and this is all we need.
4802 AC_DEFINE(TIOCSIGSEND, TIOCSIGNAL, [Some platforms redefine this.])
4809 dnl Used in xfaces.c.
4810 AC_DEFINE(XOS_NEEDS_TIME_H, 1, [Compensate for a bug in Xos.h on
4811 some systems, where it requires time.h.])
4816 dnl Define symbols to identify the version of Unix this is.
4817 dnl Define all the symbols that apply correctly.
4818 AH_TEMPLATE(DOS_NT, [Define if the system is MS DOS or MS Windows.])
4819 AH_TEMPLATE(MSDOS, [Define if the system is MS DOS.])
4820 AH_TEMPLATE(USG, [Define if the system is compatible with System III.])
4821 AH_TEMPLATE(USG5_4, [Define if the system is compatible with System V Release 4.])
4826 dnl This symbol should be defined on AIX Version 3 ???????
4827 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4829 # error "_AIX not defined"
4831 ]], [[]])], [], AC_DEFINE(_AIX, [], [Define if the system is AIX.]))
4835 AC_DEFINE(CYGWIN, 1, [Define if the system is Cygwin.])
4839 dnl Not __APPLE__, as this may not be defined on non-macOS Darwin.
4840 dnl Not DARWIN, because Panther and lower CoreFoundation.h use DARWIN to
4841 dnl distinguish macOS from pure Darwin.
4842 AC_DEFINE(DARWIN_OS, [], [Define if the system is Darwin.])
4845 gnu-linux | gnu-kfreebsd )
4847 AC_DEFINE(GNU_LINUX, [], [Define if ths system is compatible with GNU/Linux.])
4852 AC_DEFINE(HPUX, [], [Define if the system is HPUX.])
4856 AC_DEFINE(DOS_NT, [])
4857 AC_DEFINE(WINDOWSNT, 1, [Define if compiling for native MS Windows.])
4858 if test "x$ac_enable_checking" != "x" ; then
4859 AC_DEFINE(EMACSDEBUG, 1, [Define to 1 to enable w32 debug facilities.])
4865 AC_DEFINE(USG5_4, [])
4866 AC_DEFINE(SOLARIS2, [], [Define if the system is Solaris.])
4871 AC_DEFINE(USG5_4, [])
4875 AC_CACHE_CHECK([for usable FIONREAD], [emacs_cv_usable_FIONREAD],
4878 dnl BUILD 9008 - FIONREAD problem still exists in X-Windows.
4879 emacs_cv_usable_FIONREAD=no
4883 emacs_cv_usable_FIONREAD=yes
4888 [AC_LANG_PROGRAM([[#include <sys/types.h>
4889 #include <sys/ioctl.h>
4891 # include <sys/filio.h>
4894 [[int foo = ioctl (0, FIONREAD, &foo);]])],
4895 [emacs_cv_usable_FIONREAD=yes],
4896 [emacs_cv_usable_FIONREAD=no])
4899 if test $emacs_cv_usable_FIONREAD = yes; then
4900 AC_DEFINE([USABLE_FIONREAD], [1], [Define to 1 if FIONREAD is usable.])
4902 if test $emacs_broken_SIGIO = no; then
4903 AC_CACHE_CHECK([for usable SIGIO], [emacs_cv_usable_SIGIO],
4905 [AC_LANG_PROGRAM([[#include <fcntl.h>
4908 [[int foo = SIGIO | F_SETFL | FASYNC;]])],
4909 [emacs_cv_usable_SIGIO=yes],
4910 [emacs_cv_usable_SIGIO=no])],
4911 [emacs_cv_usable_SIGIO=yes],
4912 [emacs_cv_usable_SIGIO=no])
4913 if test $emacs_cv_usable_SIGIO = yes; then
4914 AC_DEFINE([USABLE_SIGIO], [1], [Define to 1 if SIGIO is usable.])
4921 dnl It works to open the pty's tty in the parent (Emacs), then
4922 dnl close and reopen it in the child.
4923 AC_DEFINE(USG_SUBTTY_WORKS, 1, [Define for USG systems where it
4924 works to open a pty's tty in the parent process, then close and
4925 reopen it in the child.])
4929 AC_DEFINE(_STRUCTURED_PROC, 1, [Needed for system_process_attributes
4934 # Set up the CFLAGS for real compilation, so we can substitute it.
4935 CFLAGS="$REAL_CFLAGS"
4936 CPPFLAGS="$REAL_CPPFLAGS"
4939 ## Hack to detect a buggy GCC version.
4940 if test "$GCC" = yes && \
4941 $CC --version 2> /dev/null | grep 'gcc.* 4.5.0' >/dev/null; then
4943 *-fno-optimize-sibling-calls*) ;;
4945 AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS.]);;
4949 version=$PACKAGE_VERSION
4951 copyright="Copyright (C) 2017 Free Software Foundation, Inc."
4952 AC_DEFINE_UNQUOTED(COPYRIGHT, ["$copyright"],
4953 [Short copyright string for this version of Emacs.])
4956 ### Specify what sort of things we'll be editing into Makefile and config.h.
4957 ### Use configuration here uncanonicalized to avoid exceeding size limits.
4959 AC_SUBST(configuration)
4964 AC_SUBST(exec_prefix)
4967 AC_SUBST(sharedstatedir)
4968 AC_SUBST(libexecdir)
4972 AC_SUBST(standardlisppath)
4973 AC_SUBST(locallisppath)
4975 AC_SUBST(x_default_search_path)
4977 AC_SUBST(archlibdir)
4983 ## FIXME? Nothing uses @LD_SWITCH_X_SITE@.
4984 ## src/Makefile.in did add LD_SWITCH_X_SITE (as a cpp define) to the
4985 ## end of LIBX_BASE, but nothing ever set it.
4986 AC_SUBST(LD_SWITCH_X_SITE)
4987 AC_SUBST(C_SWITCH_X_SITE)
4988 AC_SUBST(GNUSTEP_CFLAGS)
4990 ## Used in lwlib/Makefile.in.
4991 AC_SUBST(X_TOOLKIT_TYPE)
4993 AC_SUBST(ns_appbindir)
4994 AC_SUBST(ns_appresdir)
4996 AC_SUBST(GNU_OBJC_CFLAGS)
4997 AC_SUBST(OTHER_FILES)
4999 if test -n "${term_header}"; then
5000 AC_DEFINE_UNQUOTED(TERM_HEADER, "${term_header}",
5001 [Define to the header for the built-in window system.])
5004 AC_DEFINE_UNQUOTED(EMACS_CONFIGURATION, "${canonical}",
5005 [Define to the canonical Emacs configuration name.])
5006 AC_DEFINE_UNQUOTED(EMACS_CONFIG_OPTIONS, "${emacs_config_options}",
5007 [Define to the options passed to configure.])
5012 if test "${HAVE_X_WINDOWS}" = "yes" ; then
5013 AC_DEFINE(HAVE_X_WINDOWS, 1,
5014 [Define to 1 if you want to use the X window system.])
5016 XOBJ="xterm.o xfns.o xselect.o xrdb.o xsmfns.o xsettings.o"
5018 if test "$HAVE_CAIRO" = "yes"; then
5019 FONT_OBJ="ftfont.o ftcrfont.o"
5020 elif test "$HAVE_XFT" = "yes"; then
5021 FONT_OBJ="$FONT_OBJ ftfont.o xftfont.o ftxfont.o"
5022 elif test "$HAVE_FREETYPE" = "yes"; then
5023 FONT_OBJ="$FONT_OBJ ftfont.o ftxfont.o"
5033 if test "${USE_X_TOOLKIT}" != "none" ; then
5035 AC_DEFINE(USE_X_TOOLKIT, 1, [Define to 1 if using an X toolkit.])
5036 if test "${USE_X_TOOLKIT}" = "LUCID"; then
5037 AC_DEFINE(USE_LUCID, 1, [Define to 1 if using the Lucid X toolkit.])
5038 elif test "${USE_X_TOOLKIT}" = "MOTIF"; then
5039 AC_DEFINE(USE_MOTIF, 1, [Define to 1 if using the Motif X toolkit.])
5043 ## Paul Abrahams <abrahams at equinox.shaysnet.com> says this is needed.
5044 MOTIF_LIBW="$MOTIF_LIBW -lXpm"
5048 ## Richard Anthony Ryan <ryanr at ellingtn.ftc.nrcs.usda.gov>
5049 ## says -lXimp is needed in UNIX_SV ... 4.2 1.1.2.
5050 MOTIF_LIBW="MOTIF_LIBW -lXimp"
5054 ## olson@mcs.anl.gov says -li18n is needed by -lXm.
5055 MOTIF_LIBW="$MOTIF_LIBW -li18n"
5058 MOTIF_LIBW="$MOTIF_LIBW $LIBXP"
5061 AC_SUBST(WIDGET_OBJ)
5064 case "$USE_X_TOOLKIT" in
5065 MOTIF) TOOLKIT_LIBW="$MOTIF_LIBW" ;;
5066 LUCID) TOOLKIT_LIBW="$LUCID_LIBW" ;;
5067 none) test "x$HAVE_GTK" = "xyes" && TOOLKIT_LIBW="$GTK_LIBS" ;;
5069 if test "$HAVE_XWIDGETS" = "yes"; then
5070 TOOLKIT_LIBW="$TOOLKIT_LIBW -lXcomposite"
5072 AC_SUBST(TOOLKIT_LIBW)
5074 if test "${opsys}" != "mingw32"; then
5075 if test "$USE_X_TOOLKIT" = "none"; then
5076 LIBXT_OTHER="\$(LIBXSM)"
5078 LIBXT_OTHER="\$(LIBXMU) -lXt \$(LIBXTR6) -lXext"
5081 AC_SUBST(LIBXT_OTHER)
5083 if test "${HAVE_X11}" = "yes" ; then
5084 AC_DEFINE(HAVE_X11, 1,
5085 [Define to 1 if you want to use version 11 of X windows.])
5086 LIBX_OTHER="\$(LIBXT) \$(LIBX_EXTRA)"
5090 AC_SUBST(LIBX_OTHER)
5093 if test "$HAVE_GTK" = yes || test "$HAVE_X11" != yes; then
5095 elif test "$USE_X_TOOLKIT" = none; then
5097 LIBXMENU='$(oldXMenudir)/libXMenu11.a'
5098 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS oldXMenu"
5100 LIBXMENU='$(lwlibdir)/liblw.a'
5101 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS lwlib"
5105 AC_CACHE_CHECK([for struct alignment],
5106 [emacs_cv_struct_alignment],
5108 [AC_LANG_PROGRAM([[#include <stddef.h>
5109 struct __attribute__ ((aligned (8))) s { char c; };
5110 struct t { char c; struct s s; };
5111 char verify[offsetof (struct t, s) == 8 ? 1 : -1];
5113 [emacs_cv_struct_alignment=yes],
5114 [emacs_cv_struct_alignment=no])])
5115 if test "$emacs_cv_struct_alignment" = yes; then
5116 AC_DEFINE([HAVE_STRUCT_ATTRIBUTE_ALIGNED], 1,
5117 [Define to 1 if 'struct __attribute__ ((aligned (N)))' aligns the
5118 structure to an N-byte boundary.])
5121 if test "${GNU_MALLOC}" = "yes" ; then
5122 AC_DEFINE(GNU_MALLOC, 1,
5123 [Define to 1 if you want to use the GNU memory allocator.])
5127 if test "${REL_ALLOC}" = "yes" ; then
5128 AC_DEFINE(REL_ALLOC, 1,
5129 [Define REL_ALLOC if you want to use the relocating allocator for
5132 test "$system_malloc" != "yes" && RALLOC_OBJ=ralloc.o
5134 AC_SUBST(RALLOC_OBJ)
5136 if test "$opsys" = "cygwin"; then
5137 CYGWIN_OBJ="cygw32.o"
5138 ## Cygwin differs because of its unexec().
5140 POST_ALLOC_OBJ=lastfile.o
5141 elif test "$opsys" = "mingw32"; then
5144 POST_ALLOC_OBJ=lastfile.o
5147 PRE_ALLOC_OBJ=lastfile.o
5150 AC_SUBST(CYGWIN_OBJ)
5151 AC_SUBST(PRE_ALLOC_OBJ)
5152 AC_SUBST(POST_ALLOC_OBJ)
5154 dnl Call this 'FORTIFY_SOUR' so that it sorts before the 'FORTIFY_SOURCE'
5155 dnl verbatim defined above. The tricky name is apropos, as this hack
5156 dnl makes Fortify go sour!
5157 AH_VERBATIM([FORTIFY_SOUR],
5158 [/* Without the following workaround, Emacs runs slowly on OS X 10.8.
5159 The workaround disables some useful run-time checking, so it
5160 should be conditional to the platforms with the performance bug.
5161 Perhaps Apple will fix this some day; also see m4/extern-inline.m4. */
5162 #if defined __APPLE__ && defined __GNUC__
5163 # ifndef _DONT_USE_CTYPE_INLINE_
5164 # define _DONT_USE_CTYPE_INLINE_
5166 # ifndef _FORTIFY_SOURCE
5167 # define _FORTIFY_SOURCE 0
5172 # If user asks to omit features, disable optional features that gnulib
5173 # might otherwise enable.
5174 if test "$with_features" = no && test "$enable_acl" != yes; then
5178 # Configure gnulib. Although this does not affect CFLAGS or LIBS permanently.
5179 # it temporarily reverts them to their pre-pkg-config values,
5180 # because gnulib needs to work with both src (which uses the
5181 # pkg-config stuff) and lib-src (which does not). For example, gnulib
5182 # may need to determine whether LIB_CLOCK_GETTIME should contain -lrt,
5183 # and it therefore needs to run in an environment where LIBS does not
5184 # already contain -lrt merely because 'pkg-config --libs' printed '-lrt'
5185 # for some package unrelated to lib-src.
5188 CFLAGS=$pre_PKG_CONFIG_CFLAGS
5189 LIBS="$LIB_PTHREAD $pre_PKG_CONFIG_LIBS"
5190 gl_ASSERT_NO_GNULIB_POSIXCHECK
5191 gl_ASSERT_NO_GNULIB_TESTS
5196 if test "${opsys}" = "mingw32"; then
5197 CPPFLAGS="$CPPFLAGS -DUSE_CRT_DLL=1 -I \${abs_top_srcdir}/nt/inc"
5198 # Remove unneeded switches from the value of CC that goes to Makefiles
5199 CC=`AS_ECHO(["$CC"]) | sed -e "s,$GCC_TEST_OPTIONS,,"`
5203 aix4-2) LD_SWITCH_SYSTEM_TEMACS="-Wl,-bnodelcsect" ;;
5205 cygwin) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000" ;;
5208 ## The -headerpad option tells ld (see man page) to leave room at the
5209 ## end of the header for adding load commands. Needed for dumping.
5210 ## 0x1000 is enough for roughly 52 load commands on the x86_64
5211 ## architecture (where they are 78 bytes each). The actual number of
5212 ## load commands added is not consistent but normally ranges from
5213 ## about 14 to about 34. Setting it high gets us plenty of slop and
5214 ## only costs about 1.5K of wasted binary space.
5215 headerpad_extra=1000
5216 if test "$HAVE_NS" = "yes"; then
5217 libs_nsgui="-framework AppKit"
5218 if test "$NS_IMPL_COCOA" = "yes"; then
5219 libs_nsgui="$libs_nsgui -framework IOKit"
5224 LD_SWITCH_SYSTEM_TEMACS="-fno-pie -prebind $libs_nsgui -Xlinker -headerpad -Xlinker $headerpad_extra"
5226 ## This is here because src/Makefile.in did some extra fiddling around
5227 ## with LD_SWITCH_SYSTEM. It seems cleaner to put this in
5228 ## LD_SWITCH_SYSTEM_TEMACS instead,
5229 test "x$LD_SWITCH_SYSTEM" = "x" && test "x$GCC" != "xyes" && \
5230 LD_SWITCH_SYSTEM_TEMACS="-X $LD_SWITCH_SYSTEM_TEMACS"
5233 ## LD_SWITCH_X_SITE_RPATH is a -rpath option saying where to
5234 ## find X at run-time.
5235 ## When handled by cpp, this was in LD_SWITCH_SYSTEM. However, at the
5236 ## point where configure sourced the s/*.h file, LD_SWITCH_X_SITE_RPATH
5237 ## had not yet been defined and was expanded to null. Hence LD_SWITCH_SYSTEM
5238 ## had different values in configure (in ac_link) and src/Makefile.in.
5239 ## It seems clearer therefore to put this piece in LD_SWITCH_SYSTEM_TEMACS.
5240 gnu*) LD_SWITCH_SYSTEM_TEMACS="\$(LD_SWITCH_X_SITE_RPATH)" ;;
5243 ## Is it any better under MinGW64 to relocate emacs into higher addresses?
5244 case "$canonical" in
5245 x86_64-*-*) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x400000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5246 *) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x01000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5250 *) LD_SWITCH_SYSTEM_TEMACS= ;;
5253 # -no-pie or -nopie fixes a temacs segfault on Gentoo, OpenBSD,
5254 # Ubuntu, and other systems with "hardened" GCC configurations for
5255 # some reason (Bug#18784). We don't know why this works, but not
5256 # segfaulting is better than segfaulting. Use ac_c_werror_flag=yes
5257 # when trying the option, otherwise clang keeps warning that it does
5258 # not understand it, and pre-4.6 GCC has a similar problem
5259 # (Bug#20338). Prefer -no-pie to -nopie, as -no-pie is the
5260 # spelling used by GCC 6.1.0 and later (Bug#24682).
5262 [for $CC option to disable position independent executables],
5263 [emacs_cv_prog_cc_no_pie],
5264 [emacs_save_c_werror_flag=$ac_c_werror_flag
5265 emacs_save_LDFLAGS=$LDFLAGS
5266 ac_c_werror_flag=yes
5267 for emacs_cv_prog_cc_no_pie in -no-pie -nopie no; do
5268 test $emacs_cv_prog_cc_no_pie = no && break
5269 LDFLAGS="$emacs_save_LDFLAGS $emacs_cv_prog_cc_no_pie"
5270 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [break])
5272 ac_c_werror_flag=$emacs_save_c_werror_flag
5273 LDFLAGS=$emacs_save_LDFLAGS])
5274 if test "$emacs_cv_prog_cc_no_pie" != no; then
5275 LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS $emacs_cv_prog_cc_no_pie"
5278 if test x$ac_enable_profiling != x ; then
5280 *freebsd | gnu-linux) ;;
5281 *) LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -pg" ;;
5285 LD_SWITCH_SYSTEM_TEMACS="$LDFLAGS_NOCOMBRELOC $LD_SWITCH_SYSTEM_TEMACS"
5287 AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
5289 ## Common for all window systems
5290 if test "$window_system" != "none"; then
5291 AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])
5292 AC_DEFINE(POLL_FOR_INPUT, 1, [Define if you poll periodically to detect C-g.])
5293 WINDOW_SYSTEM_OBJ="fontset.o fringe.o image.o"
5296 AC_SUBST(WINDOW_SYSTEM_OBJ)
5298 AH_TOP([/* GNU Emacs site configuration template file.
5300 Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2017
5301 Free Software Foundation, Inc.
5303 This file is part of GNU Emacs.
5305 GNU Emacs is free software: you can redistribute it and/or modify
5306 it under the terms of the GNU General Public License as published by
5307 the Free Software Foundation, either version 3 of the License, or (at
5308 your option) any later version.
5310 GNU Emacs is distributed in the hope that it will be useful,
5311 but WITHOUT ANY WARRANTY; without even the implied warranty of
5312 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5313 GNU General Public License for more details.
5315 You should have received a copy of the GNU General Public License
5316 along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
5319 /* No code in Emacs #includes config.h twice, but some bits of code
5320 intended to work with other packages as well (like gmalloc.c)
5321 think they can include it as many times as they like. */
5322 #ifndef EMACS_CONFIG_H
5323 #define EMACS_CONFIG_H
5326 AH_BOTTOM([#include <conf_post.h>
5328 #endif /* EMACS_CONFIG_H */
5337 #### Report on what we decided to do.
5338 #### Report GTK as a toolkit, even if it doesn't use Xt.
5339 #### It makes printing result more understandable as using GTK sets
5340 #### toolkit_scroll_bars to yes by default.
5341 if test "${HAVE_GTK}" = "yes"; then
5342 USE_X_TOOLKIT="$USE_GTK_TOOLKIT"
5345 if test $USE_ACL -ne 0; then
5346 ACL_SUMMARY="yes $LIB_ACL"
5351 emacs_standard_dirs='Standard dirs'
5353 Configured for '${canonical}'.
5355 Where should the build process find the source code? ${srcdir}
5356 What compiler should emacs be built with? ${CC} ${CFLAGS}
5357 Should Emacs use the GNU version of malloc? ${GNU_MALLOC}${GNU_MALLOC_reason}
5358 Should Emacs use a relocating allocator for buffers? ${REL_ALLOC}
5359 Should Emacs use mmap(2) for buffer allocation? $use_mmap_for_buffers
5360 What window system should Emacs use? ${window_system}
5361 What toolkit should Emacs use? ${USE_X_TOOLKIT}
5362 Where do we find X Windows header files? ${x_includes:-$emacs_standard_dirs}
5363 Where do we find X Windows libraries? ${x_libraries:-$emacs_standard_dirs}"])
5366 emacs_config_features=
5367 for opt in XAW3D XPM JPEG TIFF GIF PNG RSVG CAIRO IMAGEMAGICK SOUND GPM DBUS \
5368 GCONF GSETTINGS NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT \
5369 LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS X_TOOLKIT OLDXMENU X11 NS MODULES \
5370 XWIDGETS LIBSYSTEMD CANNOT_DUMP; do
5373 CANNOT_DUMP) eval val=\${$opt} ;;
5374 NOTIFY|ACL) eval val=\${${opt}_SUMMARY} ;;
5375 TOOLKIT_SCROLL_BARS|X_TOOLKIT) eval val=\${USE_$opt} ;;
5376 *) eval val=\${HAVE_$opt} ;;
5379 xno|xnone|x) continue ;;
5384 GTK*|LUCID|MOTIF) opt=$val ;;
5389 AS_VAR_APPEND([emacs_config_features], ["$optsep$opt"])
5392 AC_DEFINE_UNQUOTED(EMACS_CONFIG_FEATURES, "${emacs_config_features}",
5393 [Summary of some of the main features enabled by configure.])
5395 AS_ECHO([" Does Emacs use -lXaw3d? ${HAVE_XAW3D}
5396 Does Emacs use -lXpm? ${HAVE_XPM}
5397 Does Emacs use -ljpeg? ${HAVE_JPEG}
5398 Does Emacs use -ltiff? ${HAVE_TIFF}
5399 Does Emacs use a gif library? ${HAVE_GIF} $LIBGIF
5400 Does Emacs use a png library? ${HAVE_PNG} $LIBPNG
5401 Does Emacs use -lrsvg-2? ${HAVE_RSVG}
5402 Does Emacs use cairo? ${HAVE_CAIRO}
5403 Does Emacs use imagemagick (version 6)? ${HAVE_IMAGEMAGICK}
5404 Does Emacs support sound? ${HAVE_SOUND}
5405 Does Emacs use -lgpm? ${HAVE_GPM}
5406 Does Emacs use -ldbus? ${HAVE_DBUS}
5407 Does Emacs use -lgconf? ${HAVE_GCONF}
5408 Does Emacs use GSettings? ${HAVE_GSETTINGS}
5409 Does Emacs use a file notification library? ${NOTIFY_SUMMARY}
5410 Does Emacs use access control lists? ${ACL_SUMMARY}
5411 Does Emacs use -lselinux? ${HAVE_LIBSELINUX}
5412 Does Emacs use -lgnutls? ${HAVE_GNUTLS}
5413 Does Emacs use -lxml2? ${HAVE_LIBXML2}
5414 Does Emacs use -lfreetype? ${HAVE_FREETYPE}
5415 Does Emacs use -lm17n-flt? ${HAVE_M17N_FLT}
5416 Does Emacs use -lotf? ${HAVE_LIBOTF}
5417 Does Emacs use -lxft? ${HAVE_XFT}
5418 Does Emacs use -lsystemd? ${HAVE_LIBSYSTEMD}
5419 Does Emacs directly use zlib? ${HAVE_ZLIB}
5420 Does Emacs have dynamic modules support? ${HAVE_MODULES}
5421 Does Emacs use toolkit scroll bars? ${USE_TOOLKIT_SCROLL_BARS}
5422 Does Emacs support Xwidgets (requires gtk3)? ${HAVE_XWIDGETS}
5423 Does Emacs have threading support in lisp? ${threads_enabled}
5426 if test -n "${EMACSDATA}"; then
5427 AS_ECHO([" Environment variable EMACSDATA set to: $EMACSDATA"])
5429 if test -n "${EMACSDOC}"; then
5430 AS_ECHO([" Environment variable EMACSDOC set to: $EMACSDOC"])
5435 if test "$HAVE_NS" = "yes"; then
5437 AS_ECHO(["You must run \"${MAKE-make} install\" in order to test the built application.
5438 The installed application will go to nextstep/Emacs.app and can be
5439 run or moved from there."])
5440 if test "$EN_NS_SELF_CONTAINED" = "yes"; then
5441 echo "The application will be fully self-contained."
5443 AS_ECHO(["The lisp resources for the application will be installed under ${prefix}.
5444 You may need to run \"${MAKE-make} install\" with sudo. The application will fail
5445 to run if these resources are not installed."])
5450 case $opsys,$emacs_uname_r in
5452 AC_MSG_WARN([[building Emacs on Cygwin 1.5 is not supported.]])
5457 # Remove any trailing slashes in these variables.
5459 */) prefix=`AS_DIRNAME(["$prefix."])`;;
5461 case $exec_prefix in
5462 */) exec_prefix=`AS_DIRNAME(["$exec_prefix."])`;;
5465 if test "$HAVE_NS" = "yes"; then
5466 if test "$NS_IMPL_GNUSTEP" = yes; then
5467 AC_CONFIG_FILES([nextstep/GNUstep/Emacs.base/Resources/Info-gnustep.plist:nextstep/templates/Info-gnustep.plist.in \
5468 nextstep/GNUstep/Emacs.base/Resources/Emacs.desktop:nextstep/templates/Emacs.desktop.in])
5469 ns_check_file=Resources/Info-gnustep.plist
5471 AC_CONFIG_FILES([nextstep/Cocoa/Emacs.base/Contents/Info.plist:nextstep/templates/Info.plist.in \
5472 nextstep/Cocoa/Emacs.base/Contents/Resources/English.lproj/InfoPlist.strings:nextstep/templates/InfoPlist.strings.in])
5473 ns_check_file=Contents/Info.plist
5475 AC_SUBST(ns_check_file)
5478 AC_CONFIG_FILES([Makefile lib/gnulib.mk])
5480 dnl config.status treats $srcdir specially, so I think this is ok...
5481 AC_CONFIG_FILES([$srcdir/doc/man/emacs.1])
5483 m4_define([subdir_makefiles],
5484 [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])
5485 SUBDIR_MAKEFILES="subdir_makefiles"
5486 AC_CONFIG_FILES(subdir_makefiles)
5488 dnl test/ is not present in release tarfiles.
5489 opt_makefile=test/Makefile
5491 if test -f "$srcdir/$opt_makefile.in"; then
5492 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
5493 dnl Again, it's best not to use a variable. Though you can add
5494 dnl ", [], [opt_makefile='$opt_makefile']" and it should work.
5495 AC_CONFIG_FILES([test/Makefile])
5499 dnl The admin/ directory used to be excluded from tarfiles.
5500 if test -d $srcdir/admin; then
5501 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES admin/charsets/Makefile admin/unidata/Makefile admin/grammars/Makefile"
5502 AC_CONFIG_FILES([admin/charsets/Makefile])
5503 AC_CONFIG_FILES([admin/unidata/Makefile])
5504 AC_CONFIG_FILES([admin/grammars/Makefile])
5508 SUBDIR_MAKEFILES_IN=`echo " ${SUBDIR_MAKEFILES}" | sed -e 's| | $(srcdir)/|g' -e 's|Makefile|Makefile.in|g'`
5510 AC_SUBST(SUBDIR_MAKEFILES_IN)
5512 dnl You might wonder (I did) why epaths.h is generated by running make,
5513 dnl rather than just letting configure generate it from epaths.in.
5514 dnl One reason is that the various paths are not fully expanded (see above);
5515 dnl e.g., gamedir='${localstatedir}/games/emacs'.
5516 dnl Secondly, the GNU Coding standards require that one should be able
5517 dnl to run 'make prefix=/some/where/else' and override the values set
5518 dnl by configure. This also explains the 'move-if-change' test and
5519 dnl the use of force in the 'epaths-force' rule in Makefile.in.
5520 AC_CONFIG_COMMANDS([src/epaths.h], [
5521 if test "${opsys}" = "mingw32"; then
5522 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force-w32
5524 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force
5525 fi || AC_MSG_ERROR(['src/epaths.h' could not be made.])
5526 ], [GCC="$GCC" CPPFLAGS="$CPPFLAGS" opsys="$opsys"])
5528 dnl NB we have to cheat and use the ac_... version because abs_top_srcdir
5529 dnl is not yet set, sigh. Or we could use ../$srcdir/src/.gdbinit,
5531 AC_CONFIG_COMMANDS([src/.gdbinit], [
5532 if test ! -f src/.gdbinit && test -f "$srcdir/src/.gdbinit"; then
5533 AS_ECHO(["source $ac_abs_top_srcdir/src/.gdbinit"]) > src/.gdbinit
5537 dnl Perhaps this would be better named doc-emacs-emacsver.texi?
5538 dnl See comments for etc-refcards-emacsver.tex.
5539 dnl Since we get a doc/emacs directory generated anyway, for the Makefile,
5540 dnl it is not quite the same. But we are generating in $srcdir.
5541 AC_CONFIG_COMMANDS([doc/emacs/emacsver.texi], [
5542 ${MAKE-make} -s --no-print-directory -C doc/emacs doc-emacsver || \
5543 AC_MSG_ERROR(['doc/emacs/emacsver.texi' could not be made.])
5546 dnl If we give this the more natural name, etc/refcards/emacsver.texi,
5547 dnl then a directory etc/refcards is created in the build directory,
5548 dnl which is probably harmless, but confusing (in out-of-tree builds).
5549 dnl (If we were to generate etc/refcards/Makefile, this might change.)
5550 dnl It is really $srcdir/etc/refcards/emacsver.tex that we generate.
5551 AC_CONFIG_COMMANDS([etc-refcards-emacsver.tex], [
5552 ${MAKE-make} -s MAKEFILE_NAME=do-not-make-Makefile etc-emacsver || \
5553 AC_MSG_ERROR(['etc/refcards/emacsver.tex' could not be made.])
5556 if test $AUTO_DEPEND = yes; then
5557 for dir in $AUTODEPEND_PARENTS; do
5558 AS_MKDIR_P([$dir/deps])
5564 if test ! "$with_mailutils"; then
5565 if test "$with_pop" = yes; then
5566 AC_MSG_WARN([This configuration installs a 'movemail' program
5567 that retrieves POP3 email via only insecure channels.
5568 To omit insecure POP3, you can use '$0 --without-pop'.])
5573 # Don't suggest GNU Mailutils, as it hasn't been ported.
5576 emacs_fix_movemail="use '$0 --with-mailutils'"
5577 case `(movemail --version) 2>/dev/null` in
5579 *) emacs_fix_movemail="install GNU Mailutils
5580 <http://mailutils.org> and $emacs_fix_movemail";;
5582 AC_MSG_NOTICE([You might want to $emacs_fix_movemail.]);;
5586 test "$MAKE" = make || AC_MSG_NOTICE([Now you can run '$MAKE'.])