1 dnl Autoconf script for GNU Emacs
2 dnl To rebuild the 'configure' script from this, execute the command
4 dnl in the directory containing this script.
5 dnl If you changed any AC_DEFINES, also run autoheader.
7 dnl Copyright (C) 1994-1996, 1999-2018 Free Software Foundation, Inc.
9 dnl This file is part of GNU Emacs.
11 dnl GNU Emacs is free software: you can redistribute it and/or modify
12 dnl it under the terms of the GNU General Public License as published by
13 dnl the Free Software Foundation, either version 3 of the License, or
14 dnl (at your option) any later version.
16 dnl GNU Emacs is distributed in the hope that it will be useful,
17 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
18 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 dnl GNU General Public License for more details.
21 dnl You should have received a copy of the GNU General Public License
22 dnl along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
25 dnl Note this is parsed by (at least) make-dist and lisp/cedet/ede/emacs.el.
26 AC_INIT(GNU Emacs, 27.0.50, bug-gnu-emacs@gnu.org, , https://www.gnu.org/software/emacs/)
28 dnl Set emacs_config_options to the options of 'configure', quoted for the shell,
29 dnl and then quoted again for a C string. Separate options with spaces.
30 dnl Add some environment variables, if they were passed via the environment
31 dnl rather than on the command-line.
34 dnl This is the documented way to record the args passed to configure,
35 dnl rather than $ac_configure_args.
36 for opt in "$@" CFLAGS CPPFLAGS LDFLAGS; do
38 -n | --no-create | --no-recursion)
40 CFLAGS | CPPFLAGS | LDFLAGS)
41 eval 'test "${'$opt'+set}" = set' || continue
43 *" $opt="*) continue ;;
45 eval opt=$opt=\$$opt ;;
48 emacs_shell_specials=$IFS\''"#$&()*;<>?@<:@\\`{|~'
50 *[["$emacs_shell_specials"]]*)
53 emacs_quote_apostrophes="s/'/'\\\\''/g"
54 opt=`AS_ECHO(["$opt"]) | sed "$emacs_quote_apostrophes"` ;;
59 emacs_quote_for_c='s/[["\\]]/\\&/g; $!s/$/\\n\\/'
60 opt=`AS_ECHO(["$opt"]) | sed "$emacs_quote_for_c"` ;;
63 AS_VAR_APPEND([emacs_config_options], ["$optsep$opt"])
67 AC_CONFIG_HEADERS(src/config.h:src/config.in)
68 AC_CONFIG_SRCDIR(src/lisp.h)
69 AC_CONFIG_AUX_DIR(build-aux)
70 AC_CONFIG_MACRO_DIR(m4)
73 AC_CHECK_PROGS(XCRUN, [xcrun])
74 if test -n "$XCRUN"; then
75 if test -z "$MAKE"; then
76 dnl Call the variable MAKE_PROG, not MAKE, to avoid confusion with
77 dnl the usual MAKE variable that 'make' itself uses.
78 AC_CHECK_PROG([MAKE_PROG], [make], [yes])
79 if test -z "$MAKE_PROG"; then
82 xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
87 dnl Check for GNU Make and possibly set MAKE.
88 [emacs_check_gnu_make ()
90 emacs_makeout=`($1 --version) 2>/dev/null` &&
91 case $emacs_makeout in
92 'GNU Make '3.8[1-9]* | 'GNU Make '3.9[0-9]* | \
93 'GNU Make '3.[1-9][0-9][0-9]* | 'GNU Make '[4-9]* | 'GNU Make '[1-9][0-9]* )
94 ac_path_MAKE_found=:;;
97 AC_CACHE_CHECK([for GNU Make], [ac_cv_path_MAKE],
98 [ac_path_MAKE_found=false
99 if test -n "$MAKE"; then
100 emacs_check_gnu_make "$MAKE"
101 ac_cv_path_MAKE=$MAKE
103 emacs_tried_make=false
104 emacs_tried_gmake=false
105 emacs_tried_gnumake=false
106 AC_PATH_PROGS_FEATURE_CHECK([MAKE], [make gmake gnumake],
107 [[emacs_check_gnu_make "$ac_path_MAKE"
108 if $ac_path_MAKE_found; then
109 # Use the fully-qualified program name only if the basename
110 # would not resolve to it.
111 if eval \$emacs_tried_$ac_prog; then
112 ac_cv_path_MAKE=$ac_path_MAKE
114 ac_cv_path_MAKE=$ac_prog
117 eval emacs_tried_$ac_prog=:]])
119 $ac_path_MAKE_found || {
120 AC_MSG_ERROR([[Building Emacs requires GNU Make, at least version 3.81.
121 If you have it installed under another name, configure with 'MAKE=...'.
122 For example, run '$0 MAKE=gnu-make'.]])
124 MAKE=$ac_cv_path_MAKE
127 dnl Canonicalize the configuration name.
133 if test -z "$host_alias"; then
135 # No --host argument was given to 'configure'; therefore $host
136 # was set to a default value based on the build platform. But
137 # this default value may be wrong if we are building from a
138 # 64-bit MSYS[2] pre-configured to build 32-bit MinGW programs.
139 # Therefore, we'll try to get the right host platform from the
142 AC_MSG_CHECKING([the compiler's target])
143 if test -z "$CC"; then
148 cc_target=`$cc -v 2>&1 | sed -n 's/Target: //p'`
152 "") AC_MSG_ERROR([Impossible to obtain $cc compiler target.
153 Please explicitly provide --host.])
155 *) AC_MSG_WARN([Compiler reported non-standard target.
156 Defaulting to $host.])
159 AC_MSG_RESULT([$host])
162 . $srcdir/nt/mingw-cfg.site
166 # srcdir is an absolute path. In this case, force the format
167 # "/c/foo/bar", to simplify later conversions to native Windows
168 # format ("c:/foo/bar").
169 srcdir=`cd "${srcdir}" && pwd -W`
170 # 'eval' pacifies strict POSIX non-MinGW shells (Bug#18612).
171 # We downcase the drive letter to avoid warnings when
172 # generating autoloads.
173 eval 'srcdir=/`echo ${srcdir:0:1} | sed "y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/"`"${srcdir:2}"'
179 configuration=${host_alias-${build_alias-$host}}
180 emacs_uname_r=`uname -r`
182 dnl Support for --program-prefix, --program-suffix and
183 dnl --program-transform-name options
186 dnl It is important that variables on the RHS not be expanded here,
187 dnl hence the single quotes. This is per the GNU coding standards, see
188 dnl (autoconf) Installation Directory Variables
189 dnl See also epaths.h below.
190 lispdir='${datadir}/emacs/${version}/lisp'
191 standardlisppath='${lispdir}'
192 locallisppath='${datadir}/emacs/${version}/site-lisp:'\
193 '${datadir}/emacs/site-lisp'
194 lisppath='${locallisppath}:${standardlisppath}'
195 etcdir='${datadir}/emacs/${version}/etc'
196 archlibdir='${libexecdir}/emacs/${version}/${configuration}'
197 etcdocdir='${datadir}/emacs/${version}/etc'
198 gamedir='${localstatedir}/games/emacs'
200 dnl Special option to disable the most of other options.
202 [AS_HELP_STRING([--without-all],
203 [omit almost all features and build
204 small executable with minimal dependencies])],
205 [with_features=$withval],
208 dnl OPTION_DEFAULT_OFF(NAME, HELP-STRING)
209 dnl Create a new --with option that defaults to being disabled.
210 dnl NAME is the base name of the option. The shell variable with_NAME
211 dnl will be set to either the user's value (if the option is
212 dnl specified; 'yes' for a plain --with-NAME) or to 'no' (if the
213 dnl option is not specified). Note that the shell variable name is
214 dnl constructed as autoconf does, by replacing non-alphanumeric
215 dnl characters with "_".
216 dnl HELP-STRING is the help text for the option.
217 AC_DEFUN([OPTION_DEFAULT_OFF], [dnl
218 AC_ARG_WITH([$1],[AS_HELP_STRING([--with-$1],[$2])],[],[dnl
219 m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=no])dnl
222 dnl OPTION_DEFAULT_ON(NAME, HELP-STRING)
223 dnl Create a new --with option that defaults to $with_features.
224 dnl NAME is the base name of the option. The shell variable with_NAME
225 dnl will be set either to 'no' (for a plain --without-NAME) or to
226 dnl 'yes' (if the option is not specified). Note that the shell
227 dnl variable name is constructed as autoconf does, by replacing
228 dnl non-alphanumeric characters with "_".
229 dnl HELP-STRING is the help text for the option.
230 AC_DEFUN([OPTION_DEFAULT_ON], [dnl
231 AC_ARG_WITH([$1],[AS_HELP_STRING([--without-$1],[$2])],[],[dnl
232 m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=$with_features])dnl
235 # For retrieving mail, unencrypted network connections are the default
236 # only on native MS-Windows platforms. (FIXME: These platforms should
237 # also be secure by default.)
239 AC_ARG_WITH([mailutils],
240 [AS_HELP_STRING([--with-mailutils],
241 [rely on GNU Mailutils, so that the --without-pop through --with-mailhost
242 options are irrelevant; this is the default if GNU Mailutils is
245 [with_mailutils=$with_features
246 if test "$with_mailutils" = yes; then
247 (movemail --version) >/dev/null 2>&1 || with_mailutils=no
249 if test "$with_mailutils" = no; then
252 AC_SUBST([with_mailutils])
255 [AS_HELP_STRING([--with-pop],
256 [Support POP mail retrieval if Emacs movemail is used (not recommended,
257 as Emacs movemail POP is insecure). This is the default only on
258 native MS-Windows.])],
261 *-mingw*) with_pop=yes;;
262 *) with_pop=no-by-default;;
264 if test "$with_pop" = yes; then
265 AC_DEFINE(MAIL_USE_POP)
267 AH_TEMPLATE(MAIL_USE_POP, [Define to support POP mail retrieval.])dnl
269 OPTION_DEFAULT_OFF([kerberos],[support Kerberos-authenticated POP])
270 if test "$with_kerberos" != no; then
273 AH_TEMPLATE(KERBEROS,
274 [Define to support Kerberos-authenticated POP mail retrieval.])dnl
276 OPTION_DEFAULT_OFF([kerberos5],[support Kerberos version 5 authenticated POP])
277 if test "${with_kerberos5}" != no; then
278 if test "${with_kerberos}" = no; then
282 AC_DEFINE(KERBEROS5, 1, [Define to use Kerberos 5 instead of Kerberos 4.])
285 OPTION_DEFAULT_OFF([hesiod],[support Hesiod to get the POP server host])
286 dnl FIXME hesiod support may not be present, so it seems like an error
287 dnl to define, or at least use, this unconditionally.
288 if test "$with_hesiod" != no; then
289 AC_DEFINE(HESIOD, 1, [Define to support using a Hesiod database to find the POP server.])
292 OPTION_DEFAULT_OFF([mail-unlink],[unlink, rather than empty, mail spool after reading])
293 if test "$with_mail_unlink" != no; then
294 AC_DEFINE(MAIL_UNLINK_SPOOL, 1, [Define to unlink, rather than empty, mail spool after reading.])
297 AC_ARG_WITH([mailhost],[AS_HELP_STRING([--with-mailhost=HOSTNAME],
298 [string giving default POP mail host])],
299 AC_DEFINE_UNQUOTED(MAILHOST, ["$withval"], [String giving fallback POP mail host.]))
301 AC_ARG_WITH([sound],[AS_HELP_STRING([--with-sound=VALUE],
302 [compile with sound support (VALUE one of: yes, alsa, oss, bsd-ossaudio, no;
303 default yes). Only for GNU/Linux, FreeBSD, NetBSD, MinGW, Cygwin.])],
304 [ case "${withval}" in
305 yes|no|alsa|oss|bsd-ossaudio) val=$withval ;;
306 *) AC_MSG_ERROR(['--with-sound=$withval' is invalid;
307 this option's value should be 'yes', 'no', 'alsa', 'oss', or 'bsd-ossaudio'.])
312 [with_sound=$with_features])
314 dnl FIXME currently it is not the last.
315 dnl This should be the last --with option, because --with-x is
316 dnl added later on when we find the file name of X, and it's best to
317 dnl keep them together visually.
318 AC_ARG_WITH([x-toolkit],[AS_HELP_STRING([--with-x-toolkit=KIT],
319 [use an X toolkit (KIT one of: yes or gtk, gtk2, gtk3, lucid or athena, motif, no)])],
320 [ case "${withval}" in
321 y | ye | yes ) val=gtk ;;
323 l | lu | luc | luci | lucid ) val=lucid ;;
324 a | at | ath | athe | athen | athena ) val=athena ;;
325 m | mo | mot | moti | motif ) val=motif ;;
326 g | gt | gtk ) val=gtk ;;
330 AC_MSG_ERROR(['--with-x-toolkit=$withval' is invalid;
331 this option's value should be 'yes', 'no', 'lucid', 'athena', 'motif', 'gtk',
332 'gtk2' or 'gtk3'. 'yes' and 'gtk' are synonyms.
333 'athena' and 'lucid' are synonyms.])
339 OPTION_DEFAULT_OFF([wide-int], [prefer wide Emacs integers (typically 62-bit); allows buffer and string size up to 2GB on 32-bit hosts, at the cost of 10% to 30% slowdown of Lisp interpreter and larger memory footprint])
340 if test "$with_wide_int" = yes; then
341 AC_DEFINE([WIDE_EMACS_INT], 1, [Use long long for EMACS_INT if available.])
344 dnl _ON results in a '--without' option in the --help output, so
345 dnl the help text should refer to "don't compile", etc.
346 with_xpm_set=${with_xpm+set}
347 OPTION_DEFAULT_ON([xpm],[don't compile with XPM image support])
348 OPTION_DEFAULT_ON([jpeg],[don't compile with JPEG image support])
349 OPTION_DEFAULT_ON([tiff],[don't compile with TIFF image support])
350 OPTION_DEFAULT_ON([gif],[don't compile with GIF image support])
351 OPTION_DEFAULT_ON([png],[don't compile with PNG image support])
352 OPTION_DEFAULT_ON([rsvg],[don't compile with SVG image support])
353 OPTION_DEFAULT_ON([lcms2],[don't compile with Little CMS support])
354 OPTION_DEFAULT_ON([libsystemd],[don't compile with libsystemd support])
355 OPTION_DEFAULT_OFF([cairo],[compile with Cairo drawing (experimental)])
356 OPTION_DEFAULT_ON([xml2],[don't compile with XML parsing support])
357 OPTION_DEFAULT_ON([imagemagick],[don't compile with ImageMagick image support])
358 OPTION_DEFAULT_ON([json], [don't compile with native JSON support])
360 OPTION_DEFAULT_ON([xft],[don't use XFT for anti aliased fonts])
361 OPTION_DEFAULT_ON([libotf],[don't use libotf for OpenType font support])
362 OPTION_DEFAULT_ON([m17n-flt],[don't use m17n-flt for text shaping])
364 OPTION_DEFAULT_ON([toolkit-scroll-bars],[don't use Motif or Xaw3d scroll bars])
365 OPTION_DEFAULT_ON([xaw3d],[don't use Xaw3d])
366 OPTION_DEFAULT_ON([xim],[don't use X11 XIM])
367 AC_ARG_WITH([ns],[AS_HELP_STRING([--with-ns],
368 [use Nextstep (macOS Cocoa or GNUstep) windowing system.
369 On by default on macOS.])],[],[with_ns=maybe])
370 OPTION_DEFAULT_OFF([w32], [use native MS Windows GUI in a Cygwin build])
372 OPTION_DEFAULT_ON([gpm],[don't use -lgpm for mouse support on a GNU/Linux console])
373 OPTION_DEFAULT_ON([dbus],[don't compile with D-Bus support])
374 AC_ARG_WITH([gconf],[AS_HELP_STRING([--with-gconf],
375 [compile with Gconf support (Gsettings replaces this)])],[],[with_gconf=maybe])
376 OPTION_DEFAULT_ON([gsettings],[don't compile with GSettings support])
377 OPTION_DEFAULT_ON([selinux],[don't compile with SELinux support])
378 OPTION_DEFAULT_ON([gnutls],[don't use -lgnutls for SSL/TLS support])
379 OPTION_DEFAULT_ON([zlib],[don't compile with zlib decompression support])
380 OPTION_DEFAULT_OFF([modules],[compile with dynamic modules support])
381 OPTION_DEFAULT_ON([threads],[don't compile with elisp threading support])
383 AC_ARG_WITH([file-notification],[AS_HELP_STRING([--with-file-notification=LIB],
384 [use a file notification library (LIB one of: yes, inotify, kqueue, gfile, w32, no)])],
385 [ case "${withval}" in
386 y | ye | yes ) val=yes ;;
388 i | in | ino | inot | inoti | inotif | inotify ) val=inotify ;;
389 k | kq | kqu | kque | kqueu | kqueue ) val=kqueue ;;
390 g | gf | gfi | gfil | gfile ) val=gfile ;;
391 w | w3 | w32 ) val=w32 ;;
392 * ) AC_MSG_ERROR(['--with-file-notification=$withval' is invalid;
393 this option's value should be 'yes', 'no', 'inotify', 'kqueue', 'gfile' or 'w32'.
394 'yes' is a synonym for 'w32' on MS-Windows, for 'no' on Nextstep,
395 otherwise for the first of 'inotify', 'kqueue' or 'gfile' that is usable.])
398 with_file_notification=$val
400 [with_file_notification=$with_features])
402 OPTION_DEFAULT_OFF([xwidgets],
403 [enable use of some gtk widgets in Emacs buffers (requires gtk3)])
405 ## For the times when you want to build Emacs but don't have
406 ## a suitable makeinfo, and can live without the manuals.
407 dnl https://lists.gnu.org/r/emacs-devel/2008-04/msg01844.html
408 OPTION_DEFAULT_ON([makeinfo],[don't require makeinfo for building manuals])
410 ## Makefile.in needs the cache file name.
413 ## This is an option because I do not know if all info/man support
414 ## compressed files, nor how to test if they do so.
415 OPTION_DEFAULT_ON([compress-install],
416 [don't compress some files (.el, .info, etc.) when installing. Equivalent to:
417 make GZIP_PROG= install])
419 AC_ARG_WITH(gameuser,dnl
420 [AS_HELP_STRING([--with-gameuser=USER_OR_GROUP],
421 [user for shared game score files.
422 An argument prefixed by ':' specifies a group instead.])])
425 case ${with_gameuser} in
427 yes) gamegroup=games ;;
428 :*) gamegroup=${with_gameuser#:} ;;
429 *) gameuser=${with_gameuser} ;;
432 AC_ARG_WITH([gnustep-conf],dnl
433 [AS_HELP_STRING([--with-gnustep-conf=FILENAME],
434 [name of GNUstep configuration file to use on systems where the command
435 'gnustep-config' does not work; default $GNUSTEP_CONFIG_FILE, or
436 /etc/GNUstep/GNUstep.conf])])
437 test "X${with_gnustep_conf}" != X && test "${with_gnustep_conf}" != yes && \
438 GNUSTEP_CONFIG_FILE="${with_gnustep_conf}"
439 test "X$GNUSTEP_CONFIG_FILE" = "X" && \
440 GNUSTEP_CONFIG_FILE=/etc/GNUstep/GNUstep.conf
442 AC_ARG_ENABLE(ns-self-contained,
443 [AS_HELP_STRING([--disable-ns-self-contained],
444 [disable self contained build under NeXTstep])],
445 EN_NS_SELF_CONTAINED=$enableval,
446 EN_NS_SELF_CONTAINED=yes)
449 AC_ARG_ENABLE(locallisppath,
450 [AS_HELP_STRING([--enable-locallisppath=PATH],
451 [directories Emacs should search for lisp files specific
453 if test "${enableval}" = "no"; then
455 elif test "${enableval}" != "yes"; then
456 locallisppath=${enableval} locallisppathset=yes
459 AC_ARG_ENABLE(checking,
460 [AS_HELP_STRING([--enable-checking@<:@=LIST@:>@],
461 [enable expensive run-time checks. With LIST,
462 enable only specific categories of checks.
463 Categories are: all,yes,no.
464 Flags are: stringbytes, stringoverrun, stringfreelist,
465 xmallocoverrun, conslist, glyphs])],
466 [ac_checking_flags="${enableval}"],[])
467 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
468 for check in $ac_checking_flags
471 # these set all the flags to specific states
472 yes) ac_enable_checking=1 ;;
473 no) ac_enable_checking= ;
474 ac_gc_check_stringbytes= ;
475 ac_gc_check_string_overrun= ;
476 ac_gc_check_string_free_list= ;
477 ac_xmalloc_overrun= ;
478 ac_gc_check_cons_list= ;
480 all) ac_enable_checking=1 ;
481 ac_gc_check_stringbytes=1 ;
482 ac_gc_check_string_overrun=1 ;
483 ac_gc_check_string_free_list=1 ;
484 ac_xmalloc_overrun=1 ;
485 ac_gc_check_cons_list=1 ;
487 # these enable particular checks
488 stringbytes) ac_gc_check_stringbytes=1 ;;
489 stringoverrun) ac_gc_check_string_overrun=1 ;;
490 stringfreelist) ac_gc_check_string_free_list=1 ;;
491 xmallocoverrun) ac_xmalloc_overrun=1 ;;
492 conslist) ac_gc_check_cons_list=1 ;;
493 glyphs) ac_glyphs_debug=1 ;;
494 *) AC_MSG_ERROR(unknown check category $check) ;;
499 if test x$ac_enable_checking != x ; then
500 AC_DEFINE(ENABLE_CHECKING, 1,
501 [Define to 1 if expensive run-time data type and consistency checks are enabled.])
503 if test x$ac_gc_check_stringbytes != x ; then
504 AC_DEFINE(GC_CHECK_STRING_BYTES, 1,
505 [Define this temporarily to hunt a bug. If defined, the size of
506 strings is redundantly recorded in sdata structures so that it can
507 be compared to the sizes recorded in Lisp strings.])
509 if test x$ac_gc_check_string_overrun != x ; then
510 AC_DEFINE(GC_CHECK_STRING_OVERRUN, 1,
511 [Define this to check for short string overrun.])
513 if test x$ac_gc_check_string_free_list != x ; then
514 AC_DEFINE(GC_CHECK_STRING_FREE_LIST, 1,
515 [Define this to check the string free list.])
517 if test x$ac_xmalloc_overrun != x ; then
518 AC_DEFINE(XMALLOC_OVERRUN_CHECK, 1,
519 [Define this to check for malloc buffer overrun.])
521 if test x$ac_gc_check_cons_list != x ; then
522 AC_DEFINE(GC_CHECK_CONS_LIST, 1,
523 [Define this to check for errors in cons list.])
525 if test x$ac_glyphs_debug != x ; then
526 AC_DEFINE(GLYPH_DEBUG, 1,
527 [Define this to enable glyphs debugging code.])
530 dnl The name of this option is unfortunate. It predates, and has no
531 dnl relation to, the "sampling-based elisp profiler" added in 24.3.
532 dnl Actually, it stops it working.
533 dnl https://lists.gnu.org/r/emacs-devel/2012-11/msg00393.html
534 AC_ARG_ENABLE(profiling,
535 [AS_HELP_STRING([--enable-profiling],
536 [build emacs with low-level, gprof profiling support.
537 Mainly useful for debugging Emacs itself. May not work on
538 all platforms. Stops profiler.el working.])],
539 [ac_enable_profiling="${enableval}"],[])
540 if test x$ac_enable_profiling != x ; then
541 PROFILING_CFLAGS="-DPROFILING=1 -pg"
545 AC_SUBST(PROFILING_CFLAGS)
547 AC_ARG_ENABLE(autodepend,
548 [AS_HELP_STRING([--enable-autodepend],
549 [automatically generate dependencies to .h-files.
550 Requires gcc, enabled if found.])],
551 [ac_enable_autodepend="${enableval}"],[ac_enable_autodepend=yes])
553 AC_ARG_ENABLE(gtk-deprecation-warnings,
554 [AS_HELP_STRING([--enable-gtk-deprecation-warnings],
555 [Show Gtk+/Gdk deprecation warnings for Gtk+ >= 3.0])],
556 [ac_enable_gtk_deprecation_warnings="${enableval}"],[])
559 AC_ARG_ENABLE([build-details],
560 [AS_HELP_STRING([--disable-build-details],
561 [Make the build more deterministic by omitting host
562 names, time stamps, etc. from the output.])],
563 [test "$enableval" = no && BUILD_DETAILS=--no-build-details])
564 AC_SUBST([BUILD_DETAILS])
566 dnl This used to use changequote, but, apart from 'changequote is evil'
567 dnl per the autoconf manual, we can speed up autoconf somewhat by quoting
568 dnl the great gob of text. Thus it's not processed for possible expansion.
569 dnl Just make sure the brackets remain balanced.
571 dnl Since Emacs can't find matching pairs of quotes, boundaries are
572 dnl indicated by comments.
576 ### If you add support for a new configuration, add code to this
577 ### switch statement to recognize your configuration name and select
578 ### the appropriate opsys.
580 ### As far as handling version numbers on operating systems is
581 ### concerned, make sure things will fail in a fixable way. If
582 ### /etc/MACHINES doesn't say anything about version numbers, be
583 ### prepared to handle anything reasonably. If version numbers
584 ### matter, be sure /etc/MACHINES says something about it.
587 case "${canonical}" in
589 ## GNU/Linux and similar ports
604 ## FreeBSD kernel + glibc based userland
615 *-*-openbsd* | *-*-mirbsd* )
619 ## Apple Darwin / macOS
621 case "${canonical}" in
622 *-apple-darwin[0-9].*) unported=yes ;;
623 i[3456]86-* | x86_64-* ) ;;
627 ## FIXME: Find a way to use Fink if available (Bug#11507).
630 ## Chromium Native Client
640 ## HP 9000 series 700 and 800, running HP/UX
644 hppa*-hp-hpux1[1-9]* )
646 CFLAGS="-D_INCLUDE__STDC_A1_SOURCE $CFLAGS"
650 rs6000-ibm-aix4.[23]* )
653 powerpc-ibm-aix4.[23]* )
656 rs6000-ibm-aix[56]* )
659 powerpc-ibm-aix[5-9]* | powerpc-ibm-aix[1-9][0-9]* )
665 | i[3456]86-*-solaris2* | i[3456]86-*-sunos5* \
666 | x86_64-*-solaris2* | x86_64-*-sunos5*)
667 case "${canonical}" in
669 amd64-*-*|x86_64-*-*) ;;
673 case "${canonical}" in
674 *-sunos5.[1-9][0-9]* | *-solaris2.[1-9][0-9]* )
676 emacs_check_sunpro_c=yes
678 *-sunos5.[1-5]* | *-solaris2.[1-5]* ) unported=yes ;;
679 ## Note that Emacs 23.1's NEWS said the following would be dropped.
680 *-sunos5.6* | *-solaris2.6* )
684 ## 5.7 EOL Aug 2008, 5.8 EOL Mar 2012.
685 *-sunos5.[7-9]* | *-solaris2.[7-9]* )
687 emacs_check_sunpro_c=yes
690 ## Watch out for a compiler that we know will not work.
691 case "${canonical}" in
692 *-solaris* | *-sunos5* )
693 if [ "x$CC" = x/usr/ucb/cc ]; then
694 ## /usr/ucb/cc doesn't work;
695 ## we should find some other compiler that does work.
706 test -z "$CC" && CC=qcc
707 CFLAGS="$CFLAGS -D__NO_EXT_QNX"
708 LDFLAGS="-N2MB $LDFLAGS"
711 ## Intel 386 machines where we don't care about the manufacturer.
713 case "${canonical}" in
714 *-darwin* ) opsys=darwin ;;
717 # MinGW overrides and adds some system headers in nt/inc.
718 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
720 *-sysv4.2uw* ) opsys=unixware ;;
721 *-sysv5uw* ) opsys=unixware ;;
722 *-sysv5OpenUNIX* ) opsys=unixware ;;
723 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
729 case "${canonical}" in
732 # MinGW overrides and adds some system headers in nt/inc.
733 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
735 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
744 ### If the code above didn't choose an operating system, just choose
745 ### an operating system based on the configuration name. You really
746 ### only want to use this when you have no idea what the right
747 ### operating system is; if you know what operating systems a machine
748 ### runs, it's cleaner to make it explicit in the case statement
750 if test x"${opsys}" = x; then
751 case "${canonical}" in
752 *-gnu* ) opsys=gnu ;;
762 if test $unported = yes; then
763 AC_MSG_ERROR([Emacs does not support '${canonical}' systems.
764 If you think it should, please send a report to ${PACKAGE_BUGREPORT}.
765 Check 'etc/MACHINES' for recognized configuration names.])
768 #### Choose a compiler.
770 dnl Don't bother to test for C89.
771 AC_DEFUN([_AC_PROG_CC_C89], [$2])
773 dnl Sets GCC=yes if using gcc.
774 AC_PROG_CC([gcc cc cl clang "$XCRUN gcc" "$XCRUN clang"])
775 if test -n "$XCRUN"; then
776 AC_CHECK_PROGS(AR, [ar "$XCRUN ar"])
777 test -n "$AR" && export AR
780 dnl Emacs needs C99 or later.
785 if test x$GCC = xyes; then
786 test "x$GCC_TEST_OPTIONS" != x && CC="$CC $GCC_TEST_OPTIONS"
789 # Avoid gnulib's tests for -lcrypto, so that there's no static dependency on it.
790 AC_DEFUN([gl_CRYPTO_CHECK])
791 # Avoid gnulib's tests for HAVE_WORKING_O_NOATIME and HAVE_WORKING_O_NOFOLLOW,
792 # as we don't use them.
793 AC_DEFUN([gl_FCNTL_O_FLAGS])
794 # Avoid gnulib's test for pthread_sigmask.
796 for func in $ac_func_list; do
797 test $func = pthread_sigmask || AS_VAR_APPEND([funcs], [" $func"])
800 # Use the system putenv even if it lacks GNU features, as we don't need them,
801 # and the gnulib replacement runs afoul of a FreeBSD 10.1 bug; see Bug#19874.
802 AC_CHECK_FUNCS_ONCE([putenv])
803 AC_DEFUN([gl_FUNC_PUTENV],
804 [test "$ac_cv_func_putenv" = yes || REPLACE_PUTENV=1])
805 # Emacs does not use the wchar or wctype-h modules.
806 AC_DEFUN([gt_TYPE_WINT_T],
807 [GNULIB_OVERRIDES_WINT_T=0
808 AC_SUBST([GNULIB_OVERRIDES_WINT_T])])
810 # Initialize gnulib right after choosing the compiler.
811 dnl Amongst other things, this sets AR and ARFLAGS.
814 if test "$ac_test_CFLAGS" != set; then
815 # It's helpful to have C macros available to GDB, so prefer -g3 to -g
816 # if -g3 works and the user does not specify CFLAGS.
817 # This test must follow gl_EARLY; otherwise AC_LINK_IFELSE complains.
820 emacs_g3_CFLAGS='-g3';;
822 emacs_g3_CFLAGS='-g3 -O2';;
826 if test -n "$emacs_g3_CFLAGS"; then
827 emacs_save_CFLAGS=$CFLAGS
828 CFLAGS=$emacs_g3_CFLAGS
829 AC_CACHE_CHECK([whether $CC accepts $emacs_g3_CFLAGS],
830 [emacs_cv_prog_cc_g3],
831 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
832 [emacs_cv_prog_cc_g3=yes],
833 [emacs_cv_prog_cc_g3=no])])
834 if test $emacs_cv_prog_cc_g3 != yes; then
835 CFLAGS=$emacs_save_CFLAGS
837 if test $opsys = mingw32; then
838 CFLAGS="$CFLAGS -gdwarf-2"
845 # No optimization flag was inferred for this non-GCC compiler.
846 # Try -O. This is needed for xlc on AIX; see Bug#14258.
847 emacs_save_CFLAGS=$CFLAGS
848 test -z "$CFLAGS" || CFLAGS="$CFLAGS "
850 AC_CACHE_CHECK([whether $CC accepts -O],
851 [emacs_cv_prog_cc_o],
852 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
853 [emacs_cv_prog_cc_o=yes],
854 [emacs_cv_prog_cc_o=no])])
855 if test $emacs_cv_prog_cc_o != yes; then
856 CFLAGS=$emacs_save_CFLAGS
861 # gl_GCC_VERSION_IFELSE([major], [minor], [run-if-found], [run-if-not-found])
862 # ---------------------------------------------------------------------------
863 # If $CPP is gcc-MAJOR.MINOR or newer, then run RUN-IF-FOUND.
864 # Otherwise, run RUN-IF-NOT-FOUND.
865 AC_DEFUN([gl_GCC_VERSION_IFELSE],
869 #if ($1) < __GNUC__ || (($1) == __GNUC__ && ($2) <= __GNUC_MINOR__)
872 # error "your version of gcc is older than $1.$2"
879 AC_ARG_ENABLE([gcc-warnings],
880 [AS_HELP_STRING([--enable-gcc-warnings@<:@=TYPE@:>@],
881 [control generation of GCC warnings. The TYPE 'yes'
882 means to fail if any warnings are issued; 'warn-only'
883 means issue warnings without failing (default for
884 developer builds); 'no' means disable warnings
885 (default for non-developer builds).])],
888 *) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
890 gl_gcc_warnings=$enableval],
891 [# By default, use 'warn-only' if it looks like the invoker of 'configure'
892 # is a developer as opposed to a builder. This is most likely true
893 # if GCC is recent enough and there is a .git directory or file;
894 # however, if there is also a .tarball-version file it is probably
895 # just a release imported into Git for patch management.
897 if test -e "$srcdir"/.git && test ! -f "$srcdir"/.tarball-version; then
898 gl_GCC_VERSION_IFELSE([5], [3], [gl_gcc_warnings=warn-only])
901 AC_ARG_ENABLE([check-lisp-object-type],
902 [AS_HELP_STRING([--enable-check-lisp-object-type],
903 [Enable compile time checks for the Lisp_Object data type,
904 which can catch some bugs during development.])])
905 if test "$enable_check_lisp_object_type" = yes; then
906 AC_DEFINE([CHECK_LISP_OBJECT_TYPE], 1,
907 [Define to enable compile-time checks for the Lisp_Object data type.])
910 # clang is unduly picky about some things.
911 AC_CACHE_CHECK([whether the compiler is clang], [emacs_cv_clang],
918 [emacs_cv_clang=yes],
919 [emacs_cv_clang=no])])
922 # When compiling with GCC, prefer -isystem to -I when including system
923 # include files, to avoid generating useless diagnostics for the files.
924 AS_IF([test $gl_gcc_warnings = no],
927 AS_IF([test "$emacs_cv_clang" = yes],
929 # Turn off some warnings if supported.
930 gl_WARN_ADD([-Wno-switch])
931 gl_WARN_ADD([-Wno-pointer-sign])
932 gl_WARN_ADD([-Wno-string-plus-int])
933 gl_WARN_ADD([-Wno-unknown-attributes])
938 # This, $nw, is the list of warnings we disable.
941 case $with_x_toolkit in
942 lucid | athena | motif)
943 # Old toolkits mishandle 'const'.
944 nw="$nw -Wwrite-strings"
947 AS_IF([test $gl_gcc_warnings = yes],
948 [WERROR_CFLAGS=-Werror])
950 nw="$nw -Wduplicated-branches" # Too many false alarms
951 nw="$nw -Wformat-overflow=2" # False alarms due to GCC bug 80776
952 nw="$nw -Wsystem-headers" # Don't let system headers trigger warnings
953 nw="$nw -Woverlength-strings" # Not a problem these days
954 nw="$nw -Wformat-nonliteral" # we do this a lot
955 nw="$nw -Wvla" # Emacs uses <vla.h>.
956 nw="$nw -Wswitch-default" # Too many warnings for now
957 nw="$nw -Wunused-const-variable=2" # lisp.h declares const objects.
958 nw="$nw -Winline" # OK to ignore 'inline'
959 nw="$nw -Wstrict-overflow" # OK to optimize assuming that
960 # signed overflow has undefined behavior
961 nw="$nw -Wsync-nand" # irrelevant here, and provokes ObjC warning
962 nw="$nw -Wunsafe-loop-optimizations" # OK to suppress unsafe optimizations
963 nw="$nw -Wbad-function-cast" # These casts are no worse than others.
965 # Emacs doesn't care about shadowing; see
966 # <https://lists.gnu.org/r/emacs-diffs/2011-11/msg00265.html>.
969 # Emacs's use of alloca inhibits protecting the stack.
970 nw="$nw -Wstack-protector"
972 # Emacs's use of partly-const functions such as Fgnutls_available_p
973 # make this option problematic.
974 nw="$nw -Wsuggest-attribute=const"
976 # Emacs's use of partly-pure functions such as CHECK_TYPE make this
977 # option problematic.
978 nw="$nw -Wsuggest-attribute=pure"
980 # This part is merely for shortening the command line,
981 # since -Wall implies -Wswitch.
984 # This part is merely for shortening the command line,
985 # since -Wno-FOO needs to be added below regardless.
986 nw="$nw -Wmissing-field-initializers"
987 nw="$nw -Woverride-init"
988 nw="$nw -Wtype-limits"
989 nw="$nw -Wunused-parameter"
991 if test "$emacs_cv_clang" = yes; then
992 nw="$nw -Wcast-align"
993 nw="$nw -Wdouble-promotion"
994 nw="$nw -Wmissing-braces"
997 # These cause too much noise in the MinGW build
998 if test $opsys = mingw32; then
999 nw="$nw -Wpointer-sign"
1000 nw="$nw -Wsuggest-attribute=format"
1003 gl_MANYWARN_ALL_GCC([ws])
1004 gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
1008 gl_WARN_ADD([-Wredundant-decls]) # Prefer this, as we don't use Bison.
1009 gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
1010 gl_WARN_ADD([-Wno-override-init]) # More trouble than it is worth
1011 gl_WARN_ADD([-Wno-sign-compare]) # Too many warnings for now
1012 gl_WARN_ADD([-Wno-type-limits]) # Too many warnings for now
1013 gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
1014 gl_WARN_ADD([-Wno-format-nonliteral])
1016 # clang is unduly picky about braces.
1017 if test "$emacs_cv_clang" = yes; then
1018 gl_WARN_ADD([-Wno-missing-braces])
1021 # This causes too much noise in the MinGW build
1022 if test $opsys = mingw32; then
1023 gl_WARN_ADD([-Wno-pointer-sign])
1026 AC_DEFINE([GCC_LINT], [1], [Define to 1 if --enable-gcc-warnings.])
1027 AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
1028 AH_VERBATIM([GNULIB_PORTCHECK_FORTIFY_SOURCE],
1029 [/* Enable compile-time and run-time bounds-checking, and some warnings,
1030 without upsetting glibc 2.15+. */
1031 #if (defined GNULIB_PORTCHECK && !defined _FORTIFY_SOURCE \
1032 && defined __OPTIMIZE__ && __OPTIMIZE__)
1033 # define _FORTIFY_SOURCE 2
1038 # clang is picky about these regardless of whether
1039 # --enable-gcc-warnings is specified.
1040 if test "$emacs_cv_clang" = yes; then
1041 gl_WARN_ADD([-Wno-initializer-overrides])
1042 gl_WARN_ADD([-Wno-tautological-compare])
1043 gl_WARN_ADD([-Wno-tautological-constant-out-of-range-compare])
1046 # Use a slightly smaller set of warning options for lib/.
1048 nw="$nw -Wunused-macros"
1049 gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
1051 AC_SUBST([WERROR_CFLAGS])
1052 AC_SUBST([GNULIB_WARN_CFLAGS])
1061 AC_ARG_ENABLE(link-time-optimization,
1062 [AS_HELP_STRING([--enable-link-time-optimization],
1063 [build with link-time optimization
1064 (experimental; see INSTALL)])],
1065 if test "${enableval}" != "no"; then
1067 if test "$emacs_cv_clang" = yes; then
1068 AC_MSG_CHECKING([whether link-time optimization is supported by clang])
1069 GOLD_PLUGIN=`$CC -print-file-name=LLVMgold.so 2>/dev/null`
1070 if test -x "$GOLD_PLUGIN"; then
1073 elif test x$GCC = xyes; then
1074 AC_MSG_CHECKING([whether link-time optimization is supported by gcc])
1075 CPUS=`getconf _NPROCESSORS_ONLN 2>/dev/null`
1076 if test x$CPUS != x; then
1082 AC_MSG_ERROR([Link-time optimization is not supported with your compiler.])
1084 if test -z "$LTO"; then
1088 CFLAGS="$CFLAGS $LTO"
1089 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1090 [ac_lto_supported=yes], [ac_lto_supported=no])
1091 CFLAGS="$old_CFLAGS"
1093 AC_MSG_RESULT([$ac_lto_supported])
1094 if test "$ac_lto_supported" = "yes"; then
1095 CFLAGS="$CFLAGS $LTO"
1096 if test "$emacs_cv_clang" = yes; then
1097 AC_MSG_WARN([Please read INSTALL before using link-time optimization with clang])
1098 # WARNING: 'ar --plugin ...' doesn't work without
1099 # command, so plugin name is appended to ARFLAGS.
1100 ARFLAGS="cru --plugin $GOLD_PLUGIN"
1101 RANLIB="$RANLIB --plugin $GOLD_PLUGIN"
1103 dnl The following is needed for GCC 4.9.0. The GCC 4.9.0 release notes
1104 dnl suggest that instead of -ffat-lto-objects we should use gcc-ar and
1105 dnl gcc-ranlib in place of ar and ranlib, but gcc-ar makes /usr/bin/ar
1106 dnl dump core on Fedora 20, so play it safe for now.
1107 gl_COMPILER_OPTION_IF([-ffat-lto-objects],
1108 [CFLAGS="$CFLAGS -ffat-lto-objects"])
1114 dnl Automake replacements.
1115 AC_DEFUN([AM_CONDITIONAL],
1119 dnl Prefer silent make output. For verbose output, use
1120 dnl 'configure --disable-silent-rules' or 'make V=1' .
1121 dnl This code is adapted from Automake.
1122 dnl Although it can be simplified now that GNU Make is assumed,
1123 dnl the simplification hasn't been done yet.
1124 AC_ARG_ENABLE([silent-rules],
1126 [--disable-silent-rules],
1127 [verbose build output (undo: "make V=0")])])
1128 if test "$enable_silent_rules" = no; then
1129 AM_DEFAULT_VERBOSITY=1
1131 AM_DEFAULT_VERBOSITY=0
1134 AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
1136 AC_SUBST([AM_DEFAULT_V])
1137 AC_SUBST([AM_DEFAULT_VERBOSITY])
1139 dnl Some other nice autoconf tests.
1141 dnl These are commented out, since gl_EARLY and/or Autoconf already does them.
1143 dnl if test "x$RANLIB" = x; then
1148 dnl Sadly, AC_PROG_LN_S is too restrictive. It also tests whether links
1149 dnl can be made to directories. This is not relevant for our usage, and
1150 dnl excludes some cases that work fine for us. Eg MS Windows or files
1151 dnl hosted on AFS, both examples where simple links work, but links to
1152 dnl directories fail. We use a cut-down version instead.
1155 AC_CACHE_CHECK([command to symlink files in the same directory], [emacs_cv_ln_s_fileonly],
1156 [rm -f conf$$ conf$$.file
1158 emacs_cv_ln_s_fileonly='cp -p'
1160 dnl On MinGW, ensure we will call the MSYS /bin/ln.exe, not some
1161 dnl random program in the current directory.
1162 if (echo >conf$$.file) 2>/dev/null; then
1163 if ln -s conf$$.file conf$$ 2>/dev/null; then
1164 if test "$opsys" = "mingw32"; then
1165 emacs_cv_ln_s_fileonly='/bin/ln -s'
1167 emacs_cv_ln_s_fileonly='ln -s'
1169 elif ln conf$$.file conf$$ 2>/dev/null; then
1170 if test "$opsys" = "mingw32"; then
1171 emacs_cv_ln_s_fileonly=/bin/ln
1173 emacs_cv_ln_s_fileonly=ln
1178 rm -f conf$$ conf$$.file])
1179 LN_S_FILEONLY=$emacs_cv_ln_s_fileonly
1181 AC_SUBST(LN_S_FILEONLY)
1184 dnl AC_PROG_LN_S sets LN_S to 'cp -pR' for MinGW, on the premise that 'ln'
1185 dnl doesn't support links to directories, as in "ln file dir". But that
1186 dnl use is non-portable, and OTOH MinGW wants to use hard links for Emacs
1187 dnl executables at "make install" time.
1188 dnl See https://lists.gnu.org/r/emacs-devel/2013-04/msg00475.html
1189 dnl for more details.
1190 if test "$opsys" = "mingw32"; then
1194 dnl On some Debian versions, "install-info" prints irritating messages
1195 dnl "This is not dpkg install-info anymore, but GNU install-info"
1196 dnl if called via an absolute file name.
1197 dnl Use the entirely-identical-but-quieter ginstall-info instead if present.
1198 dnl Sadly some people may have an old ginstall-info installed on
1199 dnl non-Debian systems, so we can't use this.
1200 dnl AC_PATH_PROGS(INSTALL_INFO, [ginstall-info install-info], :,
1201 dnl $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1203 AC_PATH_PROG(INSTALL_INFO, install-info, :,
1204 $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1205 dnl Don't use GZIP, which is used by gzip for additional parameters.
1206 AC_PATH_PROG(GZIP_PROG, gzip)
1208 test $with_compress_install != yes && test -n "$GZIP_PROG" && \
1209 GZIP_PROG=" # $GZIP_PROG # (disabled by configure --without-compress-install)"
1211 AC_CACHE_CHECK([for 'find' args to delete a file],
1212 [emacs_cv_find_delete],
1213 [if touch conftest.tmp && find conftest.tmp -delete 2>/dev/null &&
1214 test ! -f conftest.tmp
1215 then emacs_cv_find_delete="-delete"
1216 else emacs_cv_find_delete="-exec rm -f {} ';'"
1218 FIND_DELETE=$emacs_cv_find_delete
1219 AC_SUBST([FIND_DELETE])
1223 if test $opsys = gnu-linux; then
1224 if test "${SETFATTR+set}" != set; then
1225 AC_CACHE_CHECK([for setfattr],
1226 [emacs_cv_prog_setfattr],
1228 if (setfattr -n user.pax.flags conftest.tmp) >/dev/null 2>&1; then
1229 emacs_cv_prog_setfattr=yes
1231 emacs_cv_prog_setfattr=no
1233 if test "$emacs_cv_prog_setfattr" = yes; then
1234 PAXCTL_notdumped='$(SETFATTR) -n user.pax.flags -v er'
1240 AC_SUBST([SETFATTR])
1243 case $opsys,$PAXCTL_notdumped,$emacs_uname_r in
1244 gnu-linux,,* | netbsd,,[0-7].*)
1245 AC_PATH_PROG([PAXCTL], [paxctl], [],
1246 [$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR/usr/sbin])
1247 if test -n "$PAXCTL"; then
1248 if test "$opsys" = netbsd; then
1249 PAXCTL_dumped='$(PAXCTL) +a'
1250 PAXCTL_notdumped=$PAXCTL_dumped
1252 AC_MSG_CHECKING([whether binaries have a PT_PAX_FLAGS header])
1253 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1254 [if $PAXCTL -v conftest$EXEEXT >/dev/null 2>&1; then
1255 AC_MSG_RESULT([yes])
1260 if test -n "$PAXCTL"; then
1261 PAXCTL_dumped='$(PAXCTL) -zex'
1262 PAXCTL_notdumped='$(PAXCTL) -r'
1267 AC_SUBST([PAXCTL_dumped])
1268 AC_SUBST([PAXCTL_notdumped])
1270 # Makeinfo on macOS is ancient, check whether there is a more recent
1271 # version installed by Homebrew.
1272 AC_CHECK_PROG(HAVE_BREW, [brew], [yes])
1273 if test -n "$HAVE_BREW"; then
1274 AC_PATH_PROG([MAKEINFO], [makeinfo], [],
1275 [`brew --prefix texinfo 2>/dev/null`/bin$PATH_SEPARATOR$PATH])
1278 ## Require makeinfo >= 4.13 (last of the 4.x series) to build the manuals.
1279 if test "${MAKEINFO:=makeinfo}" != "no"; then
1280 case `($MAKEINFO --version) 2>/dev/null` in
1281 *' (GNU texinfo) '4.1[[3-9]]* | \
1282 *' (GNU texinfo) '[[5-9]]* | \
1283 *' (GNU texinfo) '[[1-9][0-9]]* ) ;;
1288 ## Makeinfo is unusual. For a released Emacs, the manuals are
1289 ## pre-built, and not deleted by the normal clean rules. makeinfo is
1290 ## therefore in the category of "special tools" not normally required, which
1291 ## configure does not have to check for (eg autoconf itself).
1292 ## In a repository checkout on the other hand, the manuals are not included.
1293 ## So makeinfo is a requirement to build from the repository, and configure
1294 ## should test for it as it does for any other build requirement.
1295 ## We use the presence of $srcdir/info/emacs to distinguish a release,
1296 ## with pre-built manuals, from a repository checkout.
1299 if test "$MAKEINFO" = "no"; then
1301 if test "x${with_makeinfo}" = "xno"; then
1303 elif test ! -e "$srcdir/info/emacs" && test ! -e "$srcdir/info/emacs.info"; then
1304 AC_MSG_ERROR( [You do not seem to have makeinfo >= 4.13, and your
1305 source tree does not seem to have pre-built manuals in the 'info' directory.
1306 Either install a suitable version of makeinfo, or re-run configure
1307 with the '--without-makeinfo' option to build without the manuals.] )
1310 AC_SUBST([MAKEINFO])
1311 AC_SUBST(HAVE_MAKEINFO)
1313 if test $opsys = mingw32; then
1314 DOCMISC_W32=efaq-w32
1318 AC_SUBST(DOCMISC_W32)
1320 dnl Add our options to ac_link now, after it is set up.
1322 if test x$GCC = xyes; then
1323 test "x$GCC_LINK_TEST_OPTIONS" != x && \
1324 ac_link="$ac_link $GCC_LINK_TEST_OPTIONS"
1326 test "x$NON_GCC_LINK_TEST_OPTIONS" != x && \
1327 ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
1330 dnl We need -znocombreloc if we're using a relatively recent GNU ld.
1331 dnl If we can link with the flag, it shouldn't do any harm anyhow.
1332 dnl Treat GCC specially since it just gives a non-fatal 'unrecognized option'
1333 dnl if not built to support GNU ld.
1335 dnl For a long time, -znocombreloc was added to LDFLAGS rather than
1336 dnl LD_SWITCH_SYSTEM_TEMACS. That is:
1337 dnl * inappropriate, as LDFLAGS is a user option but this is essential.
1338 dnl Eg "make LDFLAGS=... all" could run into problems,
1339 dnl https://bugs.debian.org/684788
1340 dnl * unnecessary, since temacs is the only thing that actually needs it.
1341 dnl Indeed this is where it was originally, prior to:
1342 dnl https://lists.gnu.org/r/emacs-pretest-bug/2004-03/msg00170.html
1343 if test x$GCC = xyes; then
1344 LDFLAGS_NOCOMBRELOC="-Wl,-znocombreloc"
1346 LDFLAGS_NOCOMBRELOC="-znocombreloc"
1349 AC_CACHE_CHECK([for -znocombreloc], [emacs_cv_znocombreloc],
1350 [late_LDFLAGS="$LDFLAGS"
1351 LDFLAGS="$LDFLAGS $LDFLAGS_NOCOMBRELOC"
1353 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1354 [emacs_cv_znocombreloc=yes], [emacs_cv_znocombreloc=no])
1356 LDFLAGS="$late_LDFLAGS"])
1358 if test x$emacs_cv_znocombreloc = xno; then
1359 LDFLAGS_NOCOMBRELOC=
1363 AC_CACHE_CHECK([whether addresses are sanitized],
1364 [emacs_cv_sanitize_address],
1367 [[#ifndef __has_feature
1368 #define __has_feature(f) 0
1370 #if defined __SANITIZE_ADDRESS__ || __has_feature (address_sanitizer)
1372 error "Addresses are not sanitized.";
1375 [emacs_cv_sanitize_address=yes],
1376 [emacs_cv_sanitize_address=no])])
1378 dnl The function dump-emacs will not be defined and temacs will do
1379 dnl (load "loadup") automatically unless told otherwise.
1380 test "x$CANNOT_DUMP" = "x" && CANNOT_DUMP=no
1382 nacl) CANNOT_DUMP=yes ;;
1385 if test "$CANNOT_DUMP" = "yes"; then
1386 AC_DEFINE(CANNOT_DUMP, 1, [Define if Emacs cannot be dumped on your system.])
1387 elif test "$emacs_cv_sanitize_address" = yes; then
1388 AC_MSG_WARN([[Addresses are sanitized; suggest CANNOT_DUMP=yes]])
1391 AC_SUBST(CANNOT_DUMP)
1394 UNEXEC_OBJ=unexelf.o
1396 # MSDOS uses unexcoff.o
1398 UNEXEC_OBJ=unexaix.o
1404 UNEXEC_OBJ=unexmacosx.o
1407 UNEXEC_OBJ=unexhp9k800.o
1410 UNEXEC_OBJ=unexw32.o
1413 # Use the Solaris dldump() function, called from unexsol.c, to dump
1414 # emacs, instead of the generic ELF dump code found in unexelf.c.
1415 # The resulting binary has a complete symbol table, and is better
1416 # for debugging and other observability tools (debuggers, pstack, etc).
1418 # It is likely that dldump() works with older Solaris too, but this has
1419 # not been tested, so for now this change is for Solaris 10 or newer.
1420 UNEXEC_OBJ=unexsol.o
1423 test "$CANNOT_DUMP" = "yes" && UNEXEC_OBJ=
1428 ## Let 'ld' find image libs and similar things in /usr/local/lib.
1429 ## The system compiler, GCC, has apparently been modified to not
1430 ## look there, contrary to what a stock GCC would do.
1431 ### It's not our place to do this. See bug#10313#17.
1432 ### LD_SWITCH_SYSTEM=-L/usr/local/lib
1437 ## cpp test was "ifdef __mips__", but presumably this is equivalent...
1438 case $host_cpu in mips*) LD_SWITCH_SYSTEM="-G 0";; esac
1442 ### It's not our place to do this. See bug#10313#17.
1443 ### LD_SWITCH_SYSTEM="-Wl,-rpath,/usr/pkg/lib -L/usr/pkg/lib -Wl,-rpath,/usr/local/lib -L/usr/local/lib"
1448 ## Han Boetes <han@boetes.org> says this is necessary,
1449 ## otherwise Emacs dumps core on elf systems.
1450 LD_SWITCH_SYSTEM="-Z"
1453 AC_SUBST(LD_SWITCH_SYSTEM)
1455 ac_link="$ac_link $LD_SWITCH_SYSTEM"
1457 ## This setting of LD_SWITCH_SYSTEM references LD_SWITCH_X_SITE_RPATH,
1458 ## which has not been defined yet. When this was handled with cpp,
1459 ## it was expanded to null when configure sourced the s/*.h file.
1460 ## Thus LD_SWITCH_SYSTEM had different values in configure and the Makefiles.
1461 ## FIXME it would be cleaner to put this in LD_SWITCH_SYSTEM_TEMACS
1462 ## (or somesuch), but because it is supposed to go at the _front_
1463 ## of LD_SWITCH_SYSTEM, we cannot do that in exactly the same way.
1464 ## Compare with the gnu-linux case below, which added to the end
1465 ## of LD_SWITCH_SYSTEM, and so can instead go at the front of
1466 ## LD_SWITCH_SYSTEM_TEMACS.
1469 LD_SWITCH_SYSTEM="\$(LD_SWITCH_X_SITE_RPATH) $LD_SWITCH_SYSTEM" ;;
1476 AC_CHECK_DECL([__ELF__])
1477 if test "$ac_cv_have_decl___ELF__" = "yes"; then
1478 ## With ELF, make sure that all common symbols get allocated to in the
1479 ## data section. Otherwise, the dump of temacs may miss variables in
1480 ## the shared library that have been initialized. For example, with
1481 ## GNU libc, __malloc_initialized would normally be resolved to the
1482 ## shared library's .bss section, which is fatal.
1483 if test "x$GCC" = "xyes"; then
1484 C_SWITCH_MACHINE="-fno-common"
1486 AC_MSG_ERROR([Non-GCC compilers are not supported.])
1489 dnl This was the unexalpha.c case. Removed in 24.1, 2010-07-24,
1490 dnl albeit under the mistaken assumption that said file
1491 dnl was no longer used.
1492 AC_MSG_ERROR([Non-ELF systems are not supported since Emacs 24.1.])
1496 AC_SUBST(C_SWITCH_MACHINE)
1498 AC_SUBST(UNEXEC_OBJ)
1501 ## Some programs in src produce warnings saying certain subprograms
1502 ## are too complex and need a MAXMEM value greater than 2000 for
1503 ## additional optimization. --nils@exp-math.uni-essen.de
1504 test "$opsys" = "aix4.2" && test "x$GCC" != "xyes" && \
1505 C_SWITCH_SYSTEM="-ma -qmaxmem=4000"
1506 if test "$opsys" = "mingw32"; then
1507 case "$canonical" in
1508 x86_64-*-mingw*) C_SWITCH_SYSTEM="-mtune=generic" ;;
1509 *) C_SWITCH_SYSTEM="-mtune=pentium4" ;;
1512 ## gnu-linux might need -D_BSD_SOURCE on old libc5 systems.
1513 ## It is redundant in glibc2, since we define _GNU_SOURCE.
1514 AC_SUBST(C_SWITCH_SYSTEM)
1519 ## IBM's X11R5 uses -lIM and -liconv in AIX 3.2.2.
1520 aix4-2) LIBS_SYSTEM="-lrts -lIM -liconv" ;;
1522 freebsd|dragonfly) LIBS_SYSTEM="-lutil" ;;
1524 hpux*) LIBS_SYSTEM="-l:libdld.sl" ;;
1526 qnxnto) LIBS_SYSTEM="-lsocket" ;;
1528 sol2*) LIBS_SYSTEM="-lsocket -lnsl" ;;
1530 ## Motif needs -lgen.
1531 unixware) LIBS_SYSTEM="-lsocket -lnsl -lelf -lgen" ;;
1534 AC_SUBST(LIBS_SYSTEM)
1536 ### Make sure subsequent tests use flags consistent with the build flags.
1538 if test x"${OVERRIDE_CPPFLAGS}" != x; then
1539 CPPFLAGS="${OVERRIDE_CPPFLAGS}"
1541 CPPFLAGS="$C_SWITCH_SYSTEM $C_SWITCH_MACHINE $CPPFLAGS"
1544 # Suppress obsolescent Autoconf test for size_t; Emacs assumes C99 or better.
1545 AC_DEFUN([AC_TYPE_SIZE_T])
1546 # Likewise for obsolescent test for uid_t, gid_t; Emacs assumes them.
1547 AC_DEFUN([AC_TYPE_UID_T])
1549 # sqrt and other floating-point functions such as fmod and frexp
1550 # are found in -lm on many systems.
1552 AC_SEARCH_LIBS([sqrt], [m])
1553 if test "X$LIBS" = "X$OLD_LIBS"; then
1556 LIB_MATH=$ac_cv_search_sqrt
1560 dnl Current possibilities handled by sed (aix4-2 -> aix,
1561 dnl gnu-linux -> gnu/linux, etc.):
1562 dnl gnu, gnu/linux, gnu/kfreebsd, aix, cygwin, darwin, hpux.
1563 dnl And special cases: berkeley-unix, usg-unix-v, ms-dos, windows-nt.
1564 SYSTEM_TYPE=`echo $opsys | sed -e 's/[[0-9]].*//' -e 's|-|/|'`
1571 ## Adding -lm confuses the dynamic linker, so omit it.
1574 freebsd | dragonfly )
1575 SYSTEM_TYPE=berkeley-unix
1577 gnu-linux | gnu-kfreebsd )
1579 hpux10-20 | hpux11 )
1583 SYSTEM_TYPE=windows-nt
1585 dnl NB this may be adjusted below.
1587 SYSTEM_TYPE=berkeley-unix
1591 SYSTEM_TYPE=usg-unix-v
1597 AC_DEFINE_UNQUOTED(SYSTEM_TYPE, "$SYSTEM_TYPE",
1598 [The type of system you are compiling for; sets 'system-type'.])
1599 AC_SUBST([SYSTEM_TYPE])
1602 pre_PKG_CONFIG_CFLAGS=$CFLAGS
1603 pre_PKG_CONFIG_LIBS=$LIBS
1605 PKG_PROG_PKG_CONFIG(0.9.0)
1607 dnl EMACS_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4)
1608 dnl acts like PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4,
1609 dnl HAVE_GSTUFF=yes, HAVE_GSTUFF=no) -- see pkg-config man page --
1610 dnl except that it postprocesses CFLAGS as needed for --enable-gcc-warnings.
1611 dnl EMACS_CHECK_MODULES accepts optional 3rd and 4th arguments that
1612 dnl can take the place of the default HAVE_GSTUFF=yes and HAVE_GSTUFF=no
1614 AC_DEFUN([EMACS_CHECK_MODULES],
1615 [PKG_CHECK_MODULES([$1], [$2],
1616 [$1_CFLAGS=`AS_ECHO(["$$1_CFLAGS"]) | sed -e "$edit_cflags"`
1617 m4_default([$3], [HAVE_$1=yes])],
1618 [m4_default([$4], [HAVE_$1=no])])])
1621 if test "${with_sound}" != "no"; then
1622 # Sound support for GNU/Linux, the free BSDs, MinGW, and Cygwin.
1623 AC_CHECK_HEADERS([machine/soundcard.h sys/soundcard.h soundcard.h mmsystem.h],
1624 have_sound_header=yes, [], [
1626 #define WIN32_LEAN_AND_MEAN
1627 #include <windows.h>
1630 test "${with_sound}" = "oss" && test "${have_sound_header}" != "yes" && \
1631 AC_MSG_ERROR([OSS sound support requested but not found.])
1633 if test "${with_sound}" = "bsd-ossaudio" || test "${with_sound}" = "yes"; then
1634 # Emulation library used on NetBSD.
1635 AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
1636 test "${with_sound}" = "bsd-ossaudio" && test -z "$LIBSOUND" && \
1637 AC_MSG_ERROR([bsd-ossaudio sound support requested but not found.])
1638 dnl FIXME? If we did find ossaudio, should we set with_sound=bsd-ossaudio?
1639 dnl Traditionally, we go on to check for alsa too. Does that make sense?
1643 if test "${with_sound}" = "alsa" || test "${with_sound}" = "yes"; then
1645 ALSA_MODULES="alsa >= $ALSA_REQUIRED"
1646 EMACS_CHECK_MODULES([ALSA], [$ALSA_MODULES])
1647 if test $HAVE_ALSA = yes; then
1648 SAVE_CFLAGS="$CFLAGS"
1650 CFLAGS="$ALSA_CFLAGS $CFLAGS"
1651 LIBS="$ALSA_LIBS $LIBS"
1652 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <asoundlib.h>]], [[snd_lib_error_set_handler (0);]])],
1653 emacs_alsa_normal=yes,
1654 emacs_alsa_normal=no)
1655 if test "$emacs_alsa_normal" != yes; then
1656 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <alsa/asoundlib.h>]],
1657 [[snd_lib_error_set_handler (0);]])],
1658 emacs_alsa_subdir=yes,
1659 emacs_alsa_subdir=no)
1660 if test "$emacs_alsa_subdir" != yes; then
1661 AC_MSG_ERROR([pkg-config found alsa, but it does not compile. See config.log for error messages.])
1663 ALSA_CFLAGS="$ALSA_CFLAGS -DALSA_SUBDIR_INCLUDE"
1666 CFLAGS="$SAVE_CFLAGS"
1668 LIBSOUND="$LIBSOUND $ALSA_LIBS"
1669 CFLAGS_SOUND="$CFLAGS_SOUND $ALSA_CFLAGS"
1670 AC_DEFINE(HAVE_ALSA, 1, [Define to 1 if ALSA is available.])
1671 elif test "${with_sound}" = "alsa"; then
1672 AC_MSG_ERROR([ALSA sound support requested but not found.])
1674 fi dnl with_sound = alsa|yes
1676 dnl Define HAVE_SOUND if we have sound support. We know it works and
1677 dnl compiles only on the specified platforms. For others, it
1678 dnl probably doesn't make sense to try.
1679 dnl FIXME So surely we should bypass this whole section if not using
1680 dnl one of these platforms?
1681 if test x$have_sound_header = xyes || test $HAVE_ALSA = yes; then
1683 dnl defined __FreeBSD__ || defined __NetBSD__ || defined __linux__
1684 dnl Adjust the --with-sound help text if you change this.
1685 gnu-linux|freebsd|netbsd|mingw32|cygwin)
1686 AC_DEFINE(HAVE_SOUND, 1, [Define to 1 if you have sound support.])
1692 AC_SUBST(CFLAGS_SOUND)
1695 dnl checks for header files
1696 AC_CHECK_HEADERS_ONCE(
1703 sys/utsname.h pwd.h utmp.h util.h sys/prctl.h)
1705 AC_CACHE_CHECK([for ADDR_NO_RANDOMIZE],
1706 [emacs_cv_personality_addr_no_randomize],
1708 [AC_LANG_PROGRAM([[#include <sys/personality.h>]],
1709 [[personality (personality (0xffffffff)
1710 | ADDR_NO_RANDOMIZE)]])],
1711 [emacs_cv_personality_addr_no_randomize=yes],
1712 [emacs_cv_personality_addr_no_randomize=no])])
1713 if test $emacs_cv_personality_addr_no_randomize = yes; then
1714 AC_DEFINE([HAVE_PERSONALITY_ADDR_NO_RANDOMIZE], [1],
1715 [Define to 1 if personality flag ADDR_NO_RANDOMIZE exists.])
1718 # Note that Solaris has sys/sysinfo.h which defines struct
1719 # sysinfo as well. To make sure that we're using GNU/Linux
1720 # sysinfo, we explicitly set one of its fields.
1721 if test "$ac_cv_header_sys_sysinfo_h" = yes; then
1722 AC_CACHE_CHECK([if Linux sysinfo may be used], [emacs_cv_linux_sysinfo],
1723 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1724 [[struct sysinfo si;
1727 emacs_cv_linux_sysinfo=yes, emacs_cv_linux_sysinfo=no)])
1729 if test $emacs_cv_linux_sysinfo = yes; then
1730 AC_DEFINE([HAVE_LINUX_SYSINFO], 1, [Define to 1 if you have Linux sysinfo function.])
1731 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1732 [[struct sysinfo si; return si.mem_unit]])],
1733 AC_DEFINE(LINUX_SYSINFO_UNIT, 1,
1734 [Define to 1 if Linux sysinfo sizes are in multiples of mem_unit bytes.]))
1738 dnl On Solaris 8 there's a compilation warning for term.h because
1739 dnl it doesn't define 'bool'.
1740 AC_CHECK_HEADERS(term.h, , , -)
1742 AC_CHECK_DECLS([sys_siglist], [], [], [[#include <signal.h>
1744 if test $ac_cv_have_decl_sys_siglist != yes; then
1745 # For Tru64, at least:
1746 AC_CHECK_DECLS([__sys_siglist], [], [], [[#include <signal.h>
1751 AC_CHECK_HEADERS_ONCE(sys/socket.h)
1752 AC_CHECK_HEADERS(net/if.h, , , [AC_INCLUDES_DEFAULT
1753 #if HAVE_SYS_SOCKET_H
1754 #include <sys/socket.h>
1756 AC_CHECK_HEADERS(ifaddrs.h, , , [AC_INCLUDES_DEFAULT
1757 #if HAVE_SYS_SOCKET_H
1758 #include <sys/socket.h>
1760 AC_CHECK_HEADERS(net/if_dl.h, , , [AC_INCLUDES_DEFAULT
1761 #if HAVE_SYS_SOCKET_H
1762 #include <sys/socket.h>
1765 dnl checks for structure members
1766 AC_CHECK_MEMBERS([struct ifreq.ifr_flags, struct ifreq.ifr_hwaddr,
1767 struct ifreq.ifr_netmask, struct ifreq.ifr_broadaddr,
1768 struct ifreq.ifr_addr,
1769 struct ifreq.ifr_addr.sa_len], , ,
1770 [AC_INCLUDES_DEFAULT
1771 #if HAVE_SYS_SOCKET_H
1772 #include <sys/socket.h>
1778 dnl Check for endianness.
1779 dnl AC_C_BIGENDIAN is done by gnulib.
1781 dnl check for Make feature
1784 AUTODEPEND_PARENTS='lib src'
1785 dnl check if we have GCC and autodepend is on.
1786 if test "$GCC" = yes && test "$ac_enable_autodepend" = yes; then
1787 AC_CACHE_CHECK([whether gcc understands -MMD -MF], [emacs_cv_autodepend],
1788 [SAVE_CFLAGS="$CFLAGS"
1789 CFLAGS="$CFLAGS -MMD -MF deps.d -MP"
1790 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1791 [emacs_cv_autodepend=yes], [emacs_cv_autodepend=no])
1792 CFLAGS="$SAVE_CFLAGS"
1793 test -f deps.d || emacs_cv_autodepend=no
1795 if test $emacs_cv_autodepend = yes; then
1799 AC_SUBST(AUTO_DEPEND)
1801 #### Choose a window system.
1803 ## We leave window_system equal to none if
1804 ## we end up building without one. Any new window system should
1805 ## set window_system to an appropriate value and add objects to
1806 ## window-system-specific substs.
1810 if test "$no_x" != yes; then
1814 LD_SWITCH_X_SITE_RPATH=
1815 if test "${x_libraries}" != NONE; then
1816 if test -n "${x_libraries}"; then
1817 LD_SWITCH_X_SITE=-L`AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -L/g'`
1818 LD_SWITCH_X_SITE_RPATH=-Wl,-rpath,`
1819 AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -Wl,-rpath,/g'
1822 x_default_search_path=""
1823 x_search_path=${x_libraries}
1824 if test -z "${x_search_path}"; then
1825 x_search_path=/usr/lib
1827 for x_library in `AS_ECHO(["$x_search_path:"]) | \
1828 sed -e "s/:/ /g" -e p -e "s:/lib[[^ /]]* :/share :g"`; do
1830 ${x_library}/X11/%L/%T/%N%C%S:\
1831 ${x_library}/X11/%l/%T/%N%C%S:\
1832 ${x_library}/X11/%T/%N%C%S:\
1833 ${x_library}/X11/%L/%T/%N%S:\
1834 ${x_library}/X11/%l/%T/%N%S:\
1835 ${x_library}/X11/%T/%N%S"
1836 if test x"${x_default_search_path}" = x; then
1837 x_default_search_path=${x_search_path}
1839 x_default_search_path="${x_search_path}:${x_default_search_path}"
1843 AC_SUBST(LD_SWITCH_X_SITE_RPATH)
1845 if test "${x_includes}" != NONE && test -n "${x_includes}"; then
1846 C_SWITCH_X_SITE=$isystem`AS_ECHO(["$x_includes"]) | sed -e "s/:/ $isystem/g"`
1849 if test x"${x_includes}" = x; then
1850 bitmapdir=/usr/include/X11/bitmaps
1852 # accumulate include directories that have X11 bitmap subdirectories
1854 for bmd in `AS_ECHO(["$x_includes"]) | sed -e 's/:/ /g'`; do
1855 if test -d "${bmd}/X11/bitmaps"; then
1856 bmd_acc="${bmd_acc}:${bmd}/X11/bitmaps"
1858 if test -d "${bmd}/bitmaps"; then
1859 bmd_acc="${bmd_acc}:${bmd}/bitmaps"
1862 bitmapdir=${bmd_acc#:}
1865 test "${with_ns}" = maybe && test "${opsys}" != darwin && with_ns=no
1867 NS_GNUSTEP_CONFIG=no
1870 tmp_CPPFLAGS="$CPPFLAGS"
1871 tmp_CFLAGS="$CFLAGS"
1872 CPPFLAGS="$CPPFLAGS -x objective-c"
1873 CFLAGS="$CFLAGS -x objective-c"
1876 if test "${with_ns}" != no; then
1877 if test "${opsys}" = darwin; then
1879 ns_appdir=`pwd`/nextstep/Emacs.app
1880 ns_appbindir=${ns_appdir}/Contents/MacOS
1881 ns_appresdir=${ns_appdir}/Contents/Resources
1882 ns_appsrc=Cocoa/Emacs.base
1883 ns_fontfile=macfont.o
1884 elif flags=$( (gnustep-config --objc-flags) 2>/dev/null); then
1886 NS_GNUSTEP_CONFIG=yes
1887 GNU_OBJC_CFLAGS=$flags
1888 LIBS_GNUSTEP=$(gnustep-config --gui-libs) || exit
1889 elif test -f $GNUSTEP_CONFIG_FILE; then
1891 dnl FIXME sourcing this several times in subshells seems inefficient.
1892 GNUSTEP_SYSTEM_HEADERS=$(
1893 . $GNUSTEP_CONFIG_FILE
1894 AS_ECHO(["$GNUSTEP_SYSTEM_HEADERS"])
1896 GNUSTEP_SYSTEM_LIBRARIES=$(
1897 . $GNUSTEP_CONFIG_FILE
1898 AS_ECHO(["$GNUSTEP_SYSTEM_LIBRARIES"])
1900 dnl I seemed to need these as well with GNUstep-startup 0.25.
1901 GNUSTEP_LOCAL_HEADERS=$(
1902 . $GNUSTEP_CONFIG_FILE
1903 AS_ECHO(["$GNUSTEP_LOCAL_HEADERS"])
1905 GNUSTEP_LOCAL_LIBRARIES=$(
1906 . $GNUSTEP_CONFIG_FILE
1907 AS_ECHO(["$GNUSTEP_LOCAL_LIBRARIES"])
1909 test "x${GNUSTEP_LOCAL_HEADERS}" != "x" && \
1910 GNUSTEP_LOCAL_HEADERS="-I${GNUSTEP_LOCAL_HEADERS}"
1911 test "x${GNUSTEP_LOCAL_LIBRARIES}" != "x" && \
1912 GNUSTEP_LOCAL_LIBRARIES="-L${GNUSTEP_LOCAL_LIBRARIES}"
1913 CPPFLAGS="$CPPFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1914 CFLAGS="$CFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1915 LDFLAGS="$LDFLAGS -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES}"
1916 LIBS_GNUSTEP="-lgnustep-gui -lgnustep-base -lobjc -lpthread"
1917 dnl GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS to 0 or 1.
1918 dnl If they had chosen to either define it or not, we could have
1919 dnl just used AC_CHECK_DECL here.
1920 AC_CACHE_CHECK(if GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS,
1921 emacs_cv_objc_exceptions,
1922 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <GNUstepBase/GSConfig.h>]],
1923 [[#if defined BASE_NATIVE_OBJC_EXCEPTIONS && BASE_NATIVE_OBJC_EXCEPTIONS > 0
1927 #endif]])], emacs_cv_objc_exceptions=yes, emacs_cv_objc_exceptions=no ) )
1928 if test $emacs_cv_objc_exceptions = yes; then
1929 dnl _NATIVE_OBJC_EXCEPTIONS is used by the GNUstep headers.
1930 AC_DEFINE(_NATIVE_OBJC_EXCEPTIONS, 1,
1931 [Define if GNUstep uses ObjC exceptions.])
1932 GNU_OBJC_CFLAGS="-fobjc-exceptions"
1935 if test $NS_IMPL_GNUSTEP = yes; then
1936 ns_appdir=`pwd`/nextstep/Emacs.app
1937 ns_appbindir=${ns_appdir}
1938 ns_appresdir=${ns_appdir}/Resources
1939 ns_appsrc=GNUstep/Emacs.base
1940 ns_fontfile=nsfont.o
1943 dnl This is only used while we test the NS headers, it gets reset below.
1944 CPPFLAGS="$CPPFLAGS $GNU_OBJC_CFLAGS"
1945 CFLAGS="$CFLAGS $GNU_OBJC_CFLAGS"
1947 AC_CHECK_HEADER([AppKit/AppKit.h], [HAVE_NS=yes],
1948 [AC_MSG_ERROR([The include files (AppKit/AppKit.h etc) that
1949 are required for a Nextstep build are missing or cannot be compiled.
1950 Either fix this, or re-configure with the option '--without-ns'.])])
1953 if test "${NS_IMPL_COCOA}" = "yes"; then
1954 AC_MSG_CHECKING([for Mac OS X 10.6 or newer])
1955 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <AppKit/AppKit.h>],
1957 #ifdef MAC_OS_X_VERSION_MAX_ALLOWED
1958 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
1961 error "Mac OS X 10.6 or newer required";
1965 ns_osx_have_106=yes,
1967 AC_MSG_RESULT([$ns_osx_have_106])
1969 if test $ns_osx_have_106 = no; then
1970 AC_MSG_ERROR([Mac OS X 10.6 or newer is required]);
1975 AC_SUBST(LIBS_GNUSTEP)
1977 INSTALL_ARCH_INDEP_EXTRA=install-etc
1978 ns_self_contained=no
1981 if test "${HAVE_NS}" = yes; then
1982 if test "$with_toolkit_scroll_bars" = "no"; then
1983 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for Nextstep.])
1986 window_system=nextstep
1987 # set up packaging dirs
1988 if test "${EN_NS_SELF_CONTAINED}" = yes; then
1989 ns_self_contained=yes
1990 prefix=${ns_appresdir}
1991 exec_prefix=${ns_appbindir}
1992 dnl This one isn't really used, only archlibdir is.
1993 libexecdir="\${ns_appbindir}/libexec"
1994 archlibdir="\${ns_appbindir}/libexec"
1995 etcdocdir="\${ns_appresdir}/etc"
1996 etcdir="\${ns_appresdir}/etc"
1997 dnl FIXME maybe set datarootdir instead.
1998 dnl That would also get applications, icons, man.
1999 infodir="\${ns_appresdir}/info"
2000 mandir="\${ns_appresdir}/man"
2001 lispdir="\${ns_appresdir}/lisp"
2002 test "$locallisppathset" = no && locallisppath=""
2003 INSTALL_ARCH_INDEP_EXTRA=
2006 NS_OBJC_OBJ="nsterm.o nsfns.o nsmenu.o nsselect.o nsimage.o $ns_fontfile"
2008 CFLAGS="$tmp_CFLAGS"
2009 CPPFLAGS="$tmp_CPPFLAGS"
2010 AC_SUBST(INSTALL_ARCH_INDEP_EXTRA)
2011 AC_SUBST(ns_self_contained)
2013 AC_SUBST(NS_OBJC_OBJ)
2015 if test "${HAVE_NS}" = yes; then
2017 [if the Objective C compiler supports instancetype],
2018 [emacs_cv_objc_instancetype],
2019 [AC_LANG_PUSH([Objective C])
2021 [AC_LANG_SOURCE([[@interface Test
2022 + (instancetype)test;
2024 emacs_cv_objc_instancetype=yes,
2025 emacs_cv_objc_instancetype=no)
2026 AC_LANG_POP([Objective C])])
2028 if test x$emacs_cv_objc_instancetype = xyes ; then
2029 AC_DEFINE(NATIVE_OBJC_INSTANCETYPE, 1,
2030 [Define if ObjC compiler supports instancetype natively.])
2042 if test "${with_w32}" != no; then
2045 AC_CHECK_HEADER([windows.h], [HAVE_W32=yes],
2046 [AC_MSG_ERROR(['--with-w32' was specified, but windows.h
2047 cannot be found.])])
2050 ## Using --with-w32 with MinGW is a no-op, but we allow it.
2053 AC_MSG_ERROR([Using w32 with an autotools build is only supported for Cygwin and MinGW32.])
2058 if test "${opsys}" = "mingw32"; then
2059 AC_CACHE_CHECK([whether Windows API headers are recent enough], [emacs_cv_w32api],
2060 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2061 #include <windows.h>
2062 #include <usp10.h>]],
2063 [[PIMAGE_NT_HEADERS pHeader;
2064 PIMAGE_SECTION_HEADER pSection = IMAGE_FIRST_SECTION(pHeader)]])],
2065 [emacs_cv_w32api=yes], [emacs_cv_w32api=no])])
2066 if test "${emacs_cv_w32api}" = "no"; then
2067 AC_MSG_ERROR([the Windows API headers are too old to support this build.])
2069 HAVE_W32=${emacs_cv_w32api}
2079 if test "${HAVE_W32}" = "yes"; then
2080 AC_DEFINE(HAVE_NTGUI, 1, [Define to use native MS Windows GUI.])
2081 if test "$with_toolkit_scroll_bars" = "no"; then
2082 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for w32 build.])
2084 AC_CHECK_TOOL(WINDRES, [windres],
2085 [AC_MSG_ERROR([No resource compiler found.])])
2086 W32_OBJ="w32fns.o w32menu.o w32reg.o w32font.o w32term.o"
2087 W32_OBJ="$W32_OBJ w32xfns.o w32select.o w32uniscribe.o"
2088 EMACSRES="emacs.res"
2089 case "$canonical" in
2090 x86_64-*-*) EMACS_MANIFEST="emacs-x64.manifest" ;;
2091 *) EMACS_MANIFEST="emacs-x86.manifest" ;;
2093 dnl Construct something of the form "24,4,0,0" with 4 components.
2094 comma_version=`echo "${PACKAGE_VERSION}.0.0" | sed -e 's/\./,/g' -e 's/^\([[^,]]*,[[^,]]*,[[^,]]*,[[^,]]*\).*/\1/'`
2096 comma_space_version=`echo "$comma_version" | sed 's/,/, /g'`
2097 AC_SUBST(comma_version)
2098 AC_SUBST(comma_space_version)
2099 AC_CONFIG_FILES([nt/emacs.rc nt/emacsclient.rc])
2100 if test "${opsys}" = "cygwin"; then
2101 W32_LIBS="$W32_LIBS -lkernel32 -luser32 -lusp10 -lgdi32"
2102 W32_LIBS="$W32_LIBS -lole32 -lcomdlg32 -lcomctl32 -lwinspool"
2103 # Tell the linker that emacs.res is an object (which we compile from
2104 # the rc file), not a linker script.
2105 W32_RES_LINK="-Wl,emacs.res"
2107 W32_OBJ="$W32_OBJ w32.o w32console.o w32heap.o w32inevt.o w32proc.o"
2108 W32_LIBS="$W32_LIBS -lwinmm -lusp10 -lgdi32 -lcomdlg32"
2109 W32_LIBS="$W32_LIBS -lmpr -lwinspool -lole32 -lcomctl32"
2110 W32_RES_LINK="\$(EMACSRES)"
2111 CLIENTRES="emacsclient.res"
2112 CLIENTW="emacsclientw\$(EXEEXT)"
2113 FIRSTFILE_OBJ=firstfile.o
2116 LIBS_ECLIENT="-lcomctl32"
2117 LIB_WSOCK32="-lwsock32"
2118 NTLIB="ntlib.$ac_objext"
2119 XARGS_LIMIT="-s 10000"
2125 AC_SUBST(EMACS_MANIFEST)
2128 AC_SUBST(W32_RES_LINK)
2129 AC_SUBST(FIRSTFILE_OBJ)
2132 AC_SUBST(LIBS_ECLIENT)
2133 AC_SUBST(LIB_WSOCK32)
2135 AC_SUBST(XARGS_LIMIT)
2137 if test "${HAVE_W32}" = "yes"; then
2142 ## $window_system is now set to the window system we will
2150 case "${window_system}" in
2155 case "${with_x_toolkit}" in
2156 athena | lucid ) USE_X_TOOLKIT=LUCID ;;
2157 motif ) USE_X_TOOLKIT=MOTIF ;;
2159 term_header=gtkutil.h
2160 dnl Don't set this for GTK. A lot of tests below assumes Xt when
2161 dnl USE_X_TOOLKIT is set.
2162 USE_X_TOOLKIT=none ;;
2163 gtk2 ) with_gtk2=yes
2164 term_header=gtkutil.h
2165 USE_X_TOOLKIT=none ;;
2166 gtk3 ) with_gtk3=yes
2167 term_header=gtkutil.h
2168 USE_X_TOOLKIT=none ;;
2169 no ) USE_X_TOOLKIT=none ;;
2170 dnl If user did not say whether to use a toolkit, make this decision later:
2171 dnl use the toolkit if we have gtk, or X11R5 or newer.
2172 * ) USE_X_TOOLKIT=maybe ;;
2176 term_header=nsterm.h
2179 term_header=w32term.h
2183 if test "$window_system" = none && test "X$with_x" != "Xno"; then
2184 AC_CHECK_PROG(HAVE_XSERVER, X, true, false)
2185 if test "$HAVE_XSERVER" = true ||
2186 test -n "$DISPLAY" ||
2188 for emacs_libX11 in /usr/lib/libX11.*; do break; done
2189 test "$emacs_libX11" != '/usr/lib/libX11.*'
2192 AC_MSG_ERROR([You seem to be running X, but no X development libraries
2193 were found. You should install the relevant development files for X
2194 and for the toolkit you want, such as Gtk+ or Motif. Also make
2195 sure you have development files for image handling, i.e.
2196 tiff, gif, jpeg, png and xpm.
2197 If you are sure you want Emacs compiled without X window support, pass
2203 # Does the opsystem file prohibit the use of the GNU malloc?
2204 # Assume not, until told otherwise.
2208 [whether malloc is Doug Lea style],
2209 [emacs_cv_var_doug_lea_malloc],
2210 [emacs_cv_var_doug_lea_malloc=no
2211 dnl Hooks do not work with address sanitization.
2212 if test "$emacs_cv_sanitize_address" != yes; then
2215 [[#include <malloc.h>
2216 static void hook (void) {}]],
2217 [[malloc_set_state (malloc_get_state ());
2218 __after_morecore_hook = hook;
2219 __malloc_initialize_hook = hook;]])],
2220 [emacs_cv_var_doug_lea_malloc=yes])
2222 doug_lea_malloc=$emacs_cv_var_doug_lea_malloc
2227 test "$CANNOT_DUMP" = yes ||
2229 ## darwin ld insists on the use of malloc routines in the System framework.
2230 darwin | mingw32 | nacl | sol2-10) ;;
2231 cygwin | qnxnto | freebsd)
2234 *) test "$ac_cv_func_sbrk" = yes && system_malloc=$emacs_cv_sanitize_address;;
2237 if test "${system_malloc}" != yes && test "${doug_lea_malloc}" != yes \
2238 && test "${UNEXEC_OBJ}" = unexelf.o; then
2244 if test "${system_malloc}" = "yes"; then
2245 AC_DEFINE([SYSTEM_MALLOC], 1,
2246 [Define to 1 to use the system memory allocator, even if it is not
2250 (The GNU allocators don't work with this system configuration.)"
2252 elif test "$hybrid_malloc" = yes; then
2253 AC_DEFINE(HYBRID_MALLOC, 1,
2254 [Define to use gmalloc before dumping and the system malloc after.])
2257 GNU_MALLOC_reason=" (only before dumping)"
2258 GMALLOC_OBJ=gmalloc.o
2261 test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
2262 VMLIMIT_OBJ=vm-limit.o
2264 AC_CHECK_HEADERS([sys/vlimit.h])
2265 AC_CACHE_CHECK([for data_start], [emacs_cv_data_start],
2268 [[extern char data_start[]; char ch;]],
2269 [[return data_start < &ch;]])],
2270 [emacs_cv_data_start=yes],
2271 [emacs_cv_data_start=no])])
2272 if test $emacs_cv_data_start = yes; then
2273 AC_DEFINE([HAVE_DATA_START], 1,
2274 [Define to 1 if data_start is the address of the start
2275 of the main data segment.])
2278 AC_SUBST([HYBRID_MALLOC])
2279 AC_SUBST(GMALLOC_OBJ)
2280 AC_SUBST(VMLIMIT_OBJ)
2282 if test "$doug_lea_malloc" = "yes" && test "$hybrid_malloc" != yes; then
2283 if test "$GNU_MALLOC" = yes ; then
2285 (Using Doug Lea's new malloc from the GNU C Library.)"
2287 AC_DEFINE(DOUG_LEA_MALLOC, 1,
2288 [Define to 1 if the system memory allocator is Doug Lea style,
2289 with malloc hooks and malloc_set_state.])
2291 ## Use mmap directly for allocating larger buffers.
2292 ## FIXME this comes from src/s/{gnu,gnu-linux}.h:
2293 ## #ifdef DOUG_LEA_MALLOC; #undef REL_ALLOC; #endif
2294 ## Does the AC_FUNC_MMAP test below make this check unnecessary?
2296 mingw32|gnu*) REL_ALLOC=no ;;
2300 if test x"${REL_ALLOC}" = x; then
2301 REL_ALLOC=${GNU_MALLOC}
2304 use_mmap_for_buffers=no
2306 mingw32) use_mmap_for_buffers=yes ;;
2310 if test $use_mmap_for_buffers = yes; then
2311 AC_DEFINE(USE_MMAP_FOR_BUFFERS, 1, [Define to use mmap to allocate buffer text.])
2315 LIBS="$LIBS_SYSTEM $LIBS"
2317 dnl FIXME replace main with a function we actually want from this library.
2318 AC_CHECK_LIB(Xbsd, main, LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -lXbsd")
2320 dnl Check for the POSIX thread library.
2322 AC_CHECK_HEADERS_ONCE(pthread.h)
2323 if test "$ac_cv_header_pthread_h" && test "$opsys" != "mingw32"; then
2324 AC_CACHE_CHECK([for pthread library],
2325 [emacs_cv_pthread_lib],
2326 [emacs_cv_pthread_lib=no
2328 for emacs_pthread_lib in 'none needed' -lpthread; do
2329 case $emacs_pthread_lib in
2330 -*) LIBS="$OLD_LIBS $emacs_pthread_lib";;
2334 [[#include <pthread.h>
2336 sigset_t old_mask, new_mask;
2337 void noop (void) {}]],
2338 [[pthread_t th = pthread_self ();
2340 status += pthread_create (&th, 0, 0, 0);
2341 status += pthread_sigmask (SIG_BLOCK, &new_mask, &old_mask);
2342 status += pthread_kill (th, 0);
2343 #if ! (defined SYSTEM_MALLOC || defined HYBRID_MALLOC \
2344 || defined DOUG_LEA_MALLOC)
2345 /* Test for pthread_atfork only if gmalloc uses it,
2346 as older-style hosts like MirBSD 10 lack it. */
2347 status += pthread_atfork (noop, noop, noop);
2350 [emacs_cv_pthread_lib=$emacs_pthread_lib])
2352 if test "$emacs_cv_pthread_lib" != no; then
2356 if test "$emacs_cv_pthread_lib" != no; then
2357 AC_DEFINE([HAVE_PTHREAD], 1, [Define to 1 if you have POSIX threads.])
2358 case $emacs_cv_pthread_lib in
2359 -*) LIB_PTHREAD=$emacs_cv_pthread_lib;;
2361 ac_cv_func_pthread_sigmask=yes
2362 # Some systems optimize for single-threaded programs by default, and
2363 # need special flags to disable these optimizations. For example, the
2364 # definition of 'errno' in <errno.h>.
2367 AC_DEFINE([_REENTRANT], 1,
2368 [Define to 1 if your system requires this in multithreaded code.]);;
2370 AC_DEFINE([_THREAD_SAFE], 1,
2371 [Define to 1 if your system requires this in multithreaded code.]);;
2375 AC_SUBST([LIB_PTHREAD])
2377 AC_MSG_CHECKING([for thread support])
2379 if test "$with_threads" = yes; then
2380 if test "$emacs_cv_pthread_lib" != no; then
2381 AC_DEFINE(THREADS_ENABLED, 1,
2382 [Define to 1 if you want elisp thread support.])
2384 elif test "${opsys}" = "mingw32"; then
2385 dnl MinGW can do native Windows threads even without pthreads
2386 AC_DEFINE(THREADS_ENABLED, 1,
2387 [Define to 1 if you want elisp thread support.])
2391 AC_MSG_RESULT([$threads_enabled])
2393 dnl Check for need for bigtoc support on IBM AIX
2397 AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
2399 yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
2400 *) gdb_cv_bigtoc=-bbigtoc ;;
2403 LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
2404 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[int i;]])], [], [gdb_cv_bigtoc=])
2409 # Change CFLAGS, CPPFLAGS, and LIBS temporarily so that C_SWITCH_X_SITE
2410 # is for the tests that follow. We set them back later on.
2412 REAL_CFLAGS="$CFLAGS"
2413 REAL_CPPFLAGS="$CPPFLAGS"
2416 if test "${HAVE_X11}" = "yes"; then
2417 DEFS="$C_SWITCH_X_SITE $DEFS"
2418 LDFLAGS="$LDFLAGS $LD_SWITCH_X_SITE"
2420 CFLAGS="$C_SWITCH_X_SITE $CFLAGS"
2421 CPPFLAGS="$C_SWITCH_X_SITE $CPPFLAGS"
2423 # On Solaris, arrange for LD_RUN_PATH to point to the X libraries for tests.
2424 # This is handled by LD_SWITCH_X_SITE_RPATH during the real build,
2425 # but it's more convenient here to set LD_RUN_PATH since this
2426 # also works on hosts that don't understand LD_SWITCH_X_SITE_RPATH.
2427 if test "${x_libraries}" != NONE && test -n "${x_libraries}"; then
2428 LD_RUN_PATH=$x_libraries${LD_RUN_PATH+:}$LD_RUN_PATH
2432 if test "${opsys}" = "gnu-linux"; then
2433 AC_CACHE_CHECK([whether X on GNU/Linux needs -b to link], [emacs_cv_b_link],
2434 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2435 [[XOpenDisplay ("foo");]])],
2436 [xgnu_linux_first_failure=no],
2437 [xgnu_linux_first_failure=yes])
2438 if test "${xgnu_linux_first_failure}" = "yes"; then
2439 OLD_CPPFLAGS="$CPPFLAGS"
2441 CPPFLAGS="$CPPFLAGS -b i486-linuxaout"
2442 LIBS="$LIBS -b i486-linuxaout"
2443 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2444 [[XOpenDisplay ("foo");]])],
2445 [xgnu_linux_second_failure=no],
2446 [xgnu_linux_second_failure=yes])
2447 if test "${xgnu_linux_second_failure}" = "yes"; then
2448 # If we get the same failure with -b, there is no use adding -b.
2449 # So leave it out. This plays safe.
2454 CPPFLAGS=$OLD_CPPFLAGS
2459 if test "x$emacs_cv_b_link" = xyes ; then
2460 LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -b i486-linuxaout"
2461 C_SWITCH_X_SITE="$C_SWITCH_X_SITE -b i486-linuxaout"
2465 # Reportedly, some broken Solaris systems have XKBlib.h but are missing
2466 # header files included from there.
2467 AC_CACHE_CHECK([for Xkb], [emacs_cv_xkb],
2468 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>
2469 #include <X11/XKBlib.h>]],
2470 [[XkbDescPtr kb = XkbGetKeyboard (0, XkbAllComponentsMask, XkbUseCoreKbd);]])],
2471 emacs_cv_xkb=yes, emacs_cv_xkb=no)])
2472 if test $emacs_cv_xkb = yes; then
2473 AC_DEFINE(HAVE_XKB, 1, [Define to 1 if you have the Xkb extension.])
2476 AC_CHECK_FUNCS(XrmSetDatabase XScreenResourceString \
2477 XScreenNumberOfScreen)
2480 if test "${window_system}" = "x11"; then
2481 AC_MSG_CHECKING(X11 version 6)
2482 AC_CACHE_VAL(emacs_cv_x11_version_6,
2483 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]],
2484 [[#if XlibSpecificationRelease < 6
2487 ]])], emacs_cv_x11_version_6=yes, emacs_cv_x11_version_6=no)])
2488 if test $emacs_cv_x11_version_6 = yes; then
2489 AC_MSG_RESULT(6 or newer)
2490 AC_DEFINE(HAVE_X11R6, 1,
2491 [Define to 1 if you have the X11R6 or newer version of Xlib.])
2492 AC_DEFINE(HAVE_X_I18N, 1, [Define if you have usable i18n support.])
2493 ## inoue@ainet.or.jp says Solaris has a bug related to X11R6-style
2497 *) AC_DEFINE(HAVE_X11R6_XIM, 1,
2498 [Define if you have usable X11R6-style XIM support.])
2502 AC_MSG_RESULT(before 6)
2507 ### Use -lrsvg-2 if available, unless '--with-rsvg=no' is specified.
2509 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${opsys}" = "mingw32"; then
2510 if test "${with_rsvg}" != "no"; then
2511 RSVG_REQUIRED=2.11.0
2512 RSVG_MODULE="librsvg-2.0 >= $RSVG_REQUIRED"
2514 EMACS_CHECK_MODULES([RSVG], [$RSVG_MODULE])
2515 AC_SUBST(RSVG_CFLAGS)
2518 if test $HAVE_RSVG = yes; then
2519 AC_DEFINE(HAVE_RSVG, 1, [Define to 1 if using librsvg.])
2520 CFLAGS="$CFLAGS $RSVG_CFLAGS"
2521 # Windows loads librsvg dynamically
2522 if test "${opsys}" = "mingw32"; then
2530 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${HAVE_W32}" = "yes"; then
2531 if test "${with_imagemagick}" != "no"; then
2532 ## 6.3.5 is the earliest version known to work; see Bug#17339.
2533 ## 6.8.2 makes Emacs crash; see Bug#13867.
2534 ## 7 and later have not been ported to; See Bug#25967.
2535 IMAGEMAGICK_MODULE="Wand >= 6.3.5 Wand != 6.8.2 Wand < 7"
2536 EMACS_CHECK_MODULES([IMAGEMAGICK], [$IMAGEMAGICK_MODULE])
2538 if test $HAVE_IMAGEMAGICK = yes; then
2541 CFLAGS="$CFLAGS $IMAGEMAGICK_CFLAGS"
2542 LIBS="$IMAGEMAGICK_LIBS $LIBS"
2543 AC_CHECK_FUNCS([MagickRelinquishMemory MagickExportImagePixels \
2544 MagickMergeImageLayers MagickAutoOrientImage])
2547 # Check that ImageMagick links. It does not link on Fedora 25
2548 # with './configure CC=clang', as pkg-config outputs flags like
2549 # -lomp that work for GCC but not Clang.
2550 if test "$ac_cv_func_MagickRelinquishMemory" != yes; then
2554 if test $HAVE_IMAGEMAGICK = yes; then
2555 AC_DEFINE([HAVE_IMAGEMAGICK], 1, [Define to 1 if using ImageMagick.])
2560 AC_SUBST([IMAGEMAGICK_CFLAGS])
2561 AC_SUBST([IMAGEMAGICK_LIBS])
2565 AC_CHECK_LIB(anl, getaddrinfo_a, HAVE_GETADDRINFO_A=yes)
2566 if test "${HAVE_GETADDRINFO_A}" = "yes"; then
2567 AC_DEFINE(HAVE_GETADDRINFO_A, 1,
2568 [Define to 1 if you have getaddrinfo_a for asynchronous DNS resolution.])
2569 GETADDRINFO_A_LIBS="-lanl"
2570 AC_SUBST(GETADDRINFO_A_LIBS)
2575 gtk_term_header=$term_header
2578 if test "${opsys}" != "mingw32"; then
2579 if test "${with_gtk3}" = "yes" || test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
2582 GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2584 dnl Checks for libraries.
2585 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2586 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2587 if test "$pkg_check_gtk" = "no" && test "$with_gtk3" = "yes"; then
2588 AC_MSG_ERROR($GTK_PKG_ERRORS)
2590 if test "$pkg_check_gtk" = "yes"; then
2591 AC_DEFINE(HAVE_GTK3, 1, [Define to 1 if using GTK 3 or later.])
2592 GTK_OBJ=emacsgtkfixed.o
2593 gtk_term_header=gtkutil.h
2594 USE_GTK_TOOLKIT="GTK3"
2595 if test "x$ac_enable_gtk_deprecation_warnings" = x; then
2596 AC_DEFINE([GDK_DISABLE_DEPRECATION_WARNINGS], [1],
2597 [Define to 1 to disable GTK+/GDK deprecation warnings.])
2598 AC_DEFINE([GLIB_DISABLE_DEPRECATION_WARNINGS], [1],
2599 [Define to 1 to disable Glib deprecation warnings.])
2603 gtk3_pkg_errors="$GTK_PKG_ERRORS "
2607 if test "${with_gtk2}" = "yes" || test "$check_gtk2" = "yes"; then
2610 GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2612 dnl Checks for libraries.
2613 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2614 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2615 if test "$pkg_check_gtk" = "no" &&
2616 { test "$with_gtk" = yes || test "$with_gtk2" = "yes"; }
2618 AC_MSG_ERROR($gtk3_pkg_errors$GTK_PKG_ERRORS)
2620 test "$pkg_check_gtk" = "yes" && USE_GTK_TOOLKIT="GTK2"
2627 if test x"$pkg_check_gtk" = xyes; then
2630 CFLAGS="$CFLAGS $GTK_CFLAGS"
2631 LIBS="$GTK_LIBS $LIBS"
2632 dnl Try to compile a simple GTK program.
2633 AC_CACHE_CHECK([whether GTK compiles], [emacs_cv_gtk_compiles],
2636 [[/* Check the Gtk and Glib APIs. */
2637 #include <gtk/gtk.h>
2638 #include <glib-object.h>
2640 callback (GObject *go, GParamSpec *spec, gpointer user_data)
2644 GtkSettings *gs = 0;
2645 /* Use G_CALLBACK to make sure function pointers can be cast to void *;
2646 strict C prohibits this. Use gtk_main_iteration to test that the
2647 libraries are there. */
2648 if (g_signal_handler_find (G_OBJECT (gs), G_SIGNAL_MATCH_FUNC,
2649 0, 0, 0, G_CALLBACK (callback), 0))
2650 gtk_main_iteration ();
2652 [emacs_cv_gtk_compiles=yes], [emacs_cv_gtk_compiles=no])])
2653 if test "${emacs_cv_gtk_compiles}" != "yes"; then
2655 if test "$USE_X_TOOLKIT" != "maybe"; then
2656 AC_MSG_ERROR([Gtk+ wanted, but it does not compile, see config.log. Maybe some x11-devel files missing?]);
2659 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $GTK_CFLAGS"
2661 AC_DEFINE(USE_GTK, 1, [Define to 1 if using GTK.])
2662 GTK_OBJ="gtkutil.o $GTK_OBJ"
2663 term_header=$gtk_term_header
2665 AC_MSG_WARN([[Your version of Gtk+ will have problems with
2666 closing open displays. This is no problem if you just use
2667 one display, but if you use more than one and close one of them
2669 See https://bugzilla.gnome.org/show_bug.cgi?id=85715]])
2676 if test "${HAVE_GTK}" = "yes"; then
2678 dnl GTK scrollbars resemble toolkit scrollbars a lot, so to avoid
2679 dnl a lot if #ifdef:s, say we have toolkit scrollbars.
2680 if test "$with_toolkit_scroll_bars" != no; then
2681 with_toolkit_scroll_bars=yes
2684 dnl Check if we have the old file selection dialog declared and
2685 dnl in the link library. In 2.x it may be in the library,
2686 dnl but not declared if deprecated featured has been selected out.
2687 dnl AC_CHECK_DECL checks for a macro, so check for GTK_TYPE_FILE_SELECTION.
2688 HAVE_GTK_FILE_SELECTION=no
2689 AC_CHECK_DECL(GTK_TYPE_FILE_SELECTION, HAVE_GTK_FILE_SELECTION=yes,
2690 HAVE_GTK_FILE_SELECTION=no, [AC_INCLUDES_DEFAULT
2691 #include <gtk/gtk.h>])
2692 if test "$HAVE_GTK_FILE_SELECTION" = yes; then
2693 AC_CHECK_FUNCS(gtk_file_selection_new)
2696 dnl Same as above for gtk_handle_box.
2697 HAVE_GTK_HANDLE_BOX=no
2698 AC_CHECK_DECL(GTK_TYPE_HANDLE_BOX, HAVE_GTK_HANDLE_BOX=yes,
2699 HAVE_GTK_HANDLE_BOX=no, [AC_INCLUDES_DEFAULT
2700 #include <gtk/gtk.h>])
2701 if test "$HAVE_GTK_HANDLE_BOX" = yes; then
2702 AC_CHECK_FUNCS(gtk_handle_box_new)
2705 dnl Same as above for gtk_tearoff_menu_item.
2706 HAVE_GTK_TEAROFF_MENU_ITEM=no
2707 AC_CHECK_DECL(GTK_TYPE_TEAROFF_MENU_ITEM, HAVE_GTK_TEAROFF_MENU_ITEM=yes,
2708 HAVE_GTK_TEAROFF_MENU_ITEM=no, [AC_INCLUDES_DEFAULT
2709 #include <gtk/gtk.h>])
2710 if test "$HAVE_GTK_TEAROFF_MENU_ITEM" = yes; then
2711 AC_CHECK_FUNCS(gtk_tearoff_menu_item_new)
2714 dnl Check for functions introduced in 2.14 and later.
2715 AC_CHECK_FUNCS(gtk_widget_get_window gtk_widget_set_has_window \
2716 gtk_dialog_get_action_area gtk_widget_get_sensitive \
2717 gtk_widget_get_mapped gtk_adjustment_get_page_size \
2718 gtk_orientable_set_orientation \
2719 gtk_window_set_has_resize_grip)
2721 term_header=gtkutil.h
2725 dnl Enable xwidgets if GTK3 and WebKitGTK+ are available.
2728 if test "$with_xwidgets" != "no"; then
2729 test "$USE_GTK_TOOLKIT" = "GTK3" && test "$window_system" != "none" ||
2730 AC_MSG_ERROR([xwidgets requested but gtk3 not used.])
2732 WEBKIT_REQUIRED=2.12
2733 WEBKIT_MODULES="webkit2gtk-4.0 >= $WEBKIT_REQUIRED"
2734 EMACS_CHECK_MODULES([WEBKIT], [$WEBKIT_MODULES])
2735 HAVE_XWIDGETS=$HAVE_WEBKIT
2736 test $HAVE_XWIDGETS = yes ||
2737 AC_MSG_ERROR([xwidgets requested but WebKitGTK+ not found.])
2739 XWIDGETS_OBJ=xwidget.o
2740 AC_DEFINE([HAVE_XWIDGETS], 1, [Define to 1 if you have xwidgets support.])
2742 AC_SUBST(XWIDGETS_OBJ)
2747 dnl D-Bus has been tested under GNU/Linux only. Must be adapted for
2748 dnl other platforms.
2751 if test "${with_dbus}" = "yes"; then
2752 EMACS_CHECK_MODULES([DBUS], [dbus-1 >= 1.0])
2753 if test "$HAVE_DBUS" = yes; then
2754 AC_DEFINE(HAVE_DBUS, 1, [Define to 1 if using D-Bus.])
2755 dnl dbus_watch_get_unix_fd has been introduced in D-Bus 1.1.1.
2756 dnl dbus_type_is_valid and dbus_validate_* have been introduced in
2759 LIBS="$LIBS $DBUS_LIBS"
2760 AC_CHECK_FUNCS(dbus_watch_get_unix_fd \
2761 dbus_type_is_valid \
2762 dbus_validate_bus_name \
2763 dbus_validate_path \
2764 dbus_validate_interface \
2765 dbus_validate_member)
2770 AC_SUBST(DBUS_CFLAGS)
2774 dnl GSettings has been tested under GNU/Linux only.
2776 if test "${HAVE_X11}" = "yes" && test "${with_gsettings}" = "yes"; then
2777 EMACS_CHECK_MODULES([GSETTINGS], [gio-2.0 >= 2.26])
2778 if test "$HAVE_GSETTINGS" = "yes"; then
2780 CFLAGS="$CFLAGS $GSETTINGS_CFLAGS"
2782 LIBS="$LIBS $GSETTINGS_LIBS"
2783 AC_CACHE_CHECK([whether GSettings is in gio], [emacs_cv_gsettings_in_gio],
2786 [[/* Check that gsettings really is present. */
2787 #include <glib-object.h>
2788 #include <gio/gio.h>
2791 GSettings *settings;
2792 GVariant *val = g_settings_get_value (settings, "");
2794 [emacs_cv_gsettings_in_gio=yes], [emacs_cv_gsettings_in_gio=no])])
2796 if test "$emacs_cv_gsettings_in_gio" = "yes"; then
2797 AC_DEFINE(HAVE_GSETTINGS, 1, [Define to 1 if using GSettings.])
2798 SETTINGS_CFLAGS="$GSETTINGS_CFLAGS"
2799 SETTINGS_LIBS="$GSETTINGS_LIBS"
2800 test "$with_gconf" = "yes" || with_gconf=no
2807 dnl GConf has been tested under GNU/Linux only.
2808 dnl The version is really arbitrary, it is about the same age as Gtk+ 2.6.
2810 if test "${HAVE_X11}" = "yes" && test "${with_gconf}" != "no"; then
2811 EMACS_CHECK_MODULES([GCONF], [gconf-2.0 >= 2.13])
2812 if test "$HAVE_GCONF" = yes; then
2813 AC_DEFINE(HAVE_GCONF, 1, [Define to 1 if using GConf.])
2814 dnl Newer GConf doesn't link with g_objects, so this is not defined.
2815 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GCONF_CFLAGS"
2816 SETTINGS_LIBS="$SETTINGS_LIBS $GCONF_LIBS"
2820 if test "$HAVE_GSETTINGS" = "yes" || test "$HAVE_GCONF" = "yes"; then
2821 EMACS_CHECK_MODULES([GOBJECT], [gobject-2.0 >= 2.0])
2822 if test "$HAVE_GOBJECT" = "yes"; then
2823 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GOBJECT_CFLAGS"
2824 SETTINGS_LIBS="$SETTINGS_LIBS $GOBJECT_LIBS"
2826 SAVE_CFLAGS="$CFLAGS"
2828 CFLAGS="$SETTINGS_CFLAGS $CFLAGS"
2829 LIBS="$SETTINGS_LIBS $LIBS"
2830 CFLAGS="$SAVE_CFLAGS"
2833 AC_SUBST(SETTINGS_CFLAGS)
2834 AC_SUBST(SETTINGS_LIBS)
2837 dnl SELinux is available for GNU/Linux only.
2840 if test "${with_selinux}" = "yes"; then
2841 AC_CHECK_LIB([selinux], [lgetfilecon], HAVE_LIBSELINUX=yes, HAVE_LIBSELINUX=no)
2842 if test "$HAVE_LIBSELINUX" = yes; then
2843 AC_DEFINE(HAVE_LIBSELINUX, 1, [Define to 1 if using SELinux.])
2844 LIBSELINUX_LIBS=-lselinux
2847 AC_SUBST(LIBSELINUX_LIBS)
2850 if test "${with_gnutls}" = "yes" ; then
2851 EMACS_CHECK_MODULES([LIBGNUTLS], [gnutls >= 2.12.2],
2852 [HAVE_GNUTLS=yes], [HAVE_GNUTLS=no])
2853 if test "${HAVE_GNUTLS}" = "yes"; then
2854 AC_DEFINE(HAVE_GNUTLS, 1, [Define if using GnuTLS.])
2857 # Windows loads GnuTLS dynamically
2858 if test "${opsys}" = "mingw32"; then
2863 AC_SUBST(LIBGNUTLS_LIBS)
2864 AC_SUBST(LIBGNUTLS_CFLAGS)
2867 if test "${with_libsystemd}" = "yes" ; then
2868 dnl This code has been tested with libsystemd 222 and later.
2869 dnl FIXME: Find the earliest version number for which Emacs should work,
2870 dnl and change '222' to that number.
2871 EMACS_CHECK_MODULES([LIBSYSTEMD], [libsystemd >= 222],
2872 [HAVE_LIBSYSTEMD=yes], [HAVE_LIBSYSTEMD=no])
2873 if test "${HAVE_LIBSYSTEMD}" = "yes"; then
2874 AC_DEFINE(HAVE_LIBSYSTEMD, 1, [Define if using libsystemd.])
2878 AC_SUBST(LIBSYSTEMD_LIBS)
2879 AC_SUBST(LIBSYSTEMD_CFLAGS)
2884 if test "${with_json}" = yes; then
2885 EMACS_CHECK_MODULES([JSON], [jansson >= 2.7],
2886 [HAVE_JSON=yes], [HAVE_JSON=no])
2887 if test "${HAVE_JSON}" = yes; then
2888 AC_DEFINE(HAVE_JSON, 1, [Define if using Jansson.])
2892 # Windows loads libjansson dynamically
2893 if test "${opsys}" = "mingw32"; then
2899 AC_SUBST(JSON_CFLAGS)
2905 dnl MS Windows native file monitor is available for mingw32 only.
2906 case $with_file_notification,$opsys in
2908 AC_MSG_ERROR(['--with-file-notification=w32' was specified, but
2909 this is only supported on MS-Windows native and MinGW32 builds.
2910 Consider using gfile instead.])
2912 w32,* | yes,mingw32)
2913 AC_CHECK_HEADER(windows.h)
2914 if test "$ac_cv_header_windows_h" = yes ; then
2915 AC_DEFINE(HAVE_W32NOTIFY, 1, [Define to 1 to use w32notify.])
2916 NOTIFY_OBJ=w32notify.o
2917 NOTIFY_SUMMARY="yes (w32)"
2921 dnl inotify is available only on GNU/Linux.
2922 case $with_file_notification,$NOTIFY_OBJ in
2924 AC_CHECK_HEADER(sys/inotify.h)
2925 if test "$ac_cv_header_sys_inotify_h" = yes ; then
2926 AC_CHECK_FUNC(inotify_init1)
2927 if test "$ac_cv_func_inotify_init1" = yes; then
2928 AC_DEFINE(HAVE_INOTIFY, 1, [Define to 1 to use inotify.])
2929 NOTIFY_OBJ=inotify.o
2930 NOTIFY_SUMMARY="yes -lglibc (inotify)"
2935 dnl kqueue is available on BSD-like systems.
2936 case $with_file_notification,$NOTIFY_OBJ in
2938 EMACS_CHECK_MODULES([KQUEUE], [libkqueue])
2939 if test "$HAVE_KQUEUE" = "yes"; then
2940 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2941 CPPFLAGS="$CPPFLAGS -I/usr/include/kqueue"
2942 NOTIFY_CFLAGS=$KQUEUE_CFLAGS
2943 NOTIFY_LIBS=$KQUEUE_LIBS
2945 NOTIFY_SUMMARY="yes -lkqueue"
2947 AC_SEARCH_LIBS(kqueue, [])
2948 if test "$ac_cv_search_kqueue" != no; then
2949 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2951 NOTIFY_SUMMARY="yes (kqueue)"
2956 dnl g_file_monitor exists since glib 2.18. G_FILE_MONITOR_EVENT_MOVED
2957 dnl has been added in glib 2.24. It has been tested under
2959 case $with_file_notification,$NOTIFY_OBJ in
2961 if test "${HAVE_NS}" = yes; then
2962 AC_MSG_ERROR(['--with-file-notification=gfile' is not supported in NextStep builds.
2963 Consider kqueue instead.])
2965 EMACS_CHECK_MODULES([GFILENOTIFY], [gio-2.0 >= 2.24])
2966 if test "$HAVE_GFILENOTIFY" = "yes"; then
2967 AC_DEFINE(HAVE_GFILENOTIFY, 1, [Define to 1 if using GFile.])
2968 NOTIFY_CFLAGS=$GFILENOTIFY_CFLAGS
2969 NOTIFY_LIBS=$GFILENOTIFY_LIBS
2970 NOTIFY_OBJ=gfilenotify.o
2971 NOTIFY_SUMMARY="yes -lgio (gfile)"
2976 case $with_file_notification,$NOTIFY_OBJ in
2977 yes,* | no,* | *,?*) ;;
2978 *) AC_MSG_ERROR([File notification '$with_file_notification' requested but requirements not found.]) ;;
2981 if test -n "$NOTIFY_OBJ"; then
2982 AC_DEFINE(USE_FILE_NOTIFY, 1, [Define to 1 if using file notifications.])
2984 AC_SUBST(NOTIFY_CFLAGS)
2985 AC_SUBST(NOTIFY_LIBS)
2986 AC_SUBST(NOTIFY_OBJ)
2988 dnl Do not put whitespace before the #include statements below.
2989 dnl Older compilers (eg sunos4 cc) choke on it.
2992 if test x"${USE_X_TOOLKIT}" = xmaybe || test x"${USE_X_TOOLKIT}" = xLUCID; then
2993 if test "$with_xaw3d" != no; then
2994 AC_CACHE_VAL(emacs_cv_xaw3d,
2995 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
2996 #include <X11/Intrinsic.h>
2997 #include <X11/Xaw3d/Simple.h>]],
2999 [AC_CHECK_LIB(Xaw3d, XawScrollbarSetThumb,
3000 emacs_cv_xaw3d=yes, emacs_cv_xaw3d=no)],
3001 emacs_cv_xaw3d=no)])
3005 if test $emacs_cv_xaw3d = yes; then
3006 AC_MSG_CHECKING(for xaw3d)
3007 AC_MSG_RESULT([yes; using Lucid toolkit])
3011 AC_DEFINE(HAVE_XAW3D, 1,
3012 [Define to 1 if you have the Xaw3d library (-lXaw3d).])
3014 AC_MSG_CHECKING(for xaw3d)
3016 AC_MSG_CHECKING(for libXaw)
3017 AC_CACHE_VAL(emacs_cv_xaw,
3018 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
3019 #include <X11/Intrinsic.h>
3020 #include <X11/Xaw/Simple.h>]],
3024 if test $emacs_cv_xaw = yes; then
3025 AC_MSG_RESULT([yes; using Lucid toolkit])
3028 elif test x"${USE_X_TOOLKIT}" = xLUCID; then
3029 AC_MSG_ERROR([Lucid toolkit requires X11/Xaw include files])
3031 AC_MSG_ERROR([No X toolkit could be found.
3032 If you are sure you want Emacs compiled without an X toolkit, pass
3034 to configure. Otherwise, install the development libraries for the toolkit
3035 that you want to use (e.g. Gtk+) and re-run configure.])
3040 X_TOOLKIT_TYPE=$USE_X_TOOLKIT
3044 if test "${USE_X_TOOLKIT}" != "none"; then
3045 AC_MSG_CHECKING(X11 toolkit version)
3046 AC_CACHE_VAL(emacs_cv_x11_toolkit_version_6,
3047 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Intrinsic.h>]],
3048 [[#if XtSpecificationRelease < 6
3051 ]])], emacs_cv_x11_toolkit_version_6=yes, emacs_cv_x11_toolkit_version_6=no)])
3052 HAVE_X11XTR6=$emacs_cv_x11_toolkit_version_6
3053 if test $emacs_cv_x11_toolkit_version_6 = yes; then
3054 AC_MSG_RESULT(6 or newer)
3055 AC_DEFINE(HAVE_X11XTR6, 1,
3056 [Define to 1 if you have the X11R6 or newer version of Xt.])
3057 LIBXTR6="-lSM -lICE"
3059 ## Use libw.a along with X11R6 Xt.
3060 unixware) LIBXTR6="$LIBXTR6 -lw" ;;
3063 AC_MSG_RESULT(before 6)
3066 dnl If using toolkit, check whether libXmu.a exists.
3067 dnl tranle@intellicorp.com says libXmu.a can need XtMalloc in libXt.a to link.
3069 if test x$HAVE_X11XTR6 = xyes; then
3070 OTHERLIBS='-lXt -lSM -lICE'
3074 AC_SEARCH_LIBS([XmuConvertStandardSelection], [Xmu], [], [], [$OTHERLIBS])
3075 if test "X$LIBS" != "X$OLDLIBS"; then
3076 LIBXMU=$ac_cv_search_XmuConvertStandardSelection
3079 dnl ac_cv_search_XmuConvertStandardSelection is also referenced below.
3085 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3086 # OpenMotif may be installed in such a way on some GNU/Linux systems.
3087 if test -d /usr/include/openmotif; then
3088 CPPFLAGS="-I/usr/include/openmotif $CPPFLAGS"
3089 emacs_cv_openmotif=yes
3090 case "$canonical" in
3091 x86_64-*-linux-gnu* | powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*)
3092 test -d /usr/lib64/openmotif && LDFLAGS="-L/usr/lib64/openmotif $LDFLAGS"
3095 test -d /usr/lib/openmotif && LDFLAGS="-L/usr/lib/openmotif $LDFLAGS"
3098 emacs_cv_openmotif=no
3100 AC_CACHE_CHECK(for (Open)Motif version 2.1, emacs_cv_motif_version_2_1,
3101 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <Xm/Xm.h>]],
3102 [[#if XmVERSION > 2 || (XmVERSION == 2 && XmREVISION >= 1)
3105 Motif version prior to 2.1.
3107 emacs_cv_motif_version_2_1=yes, emacs_cv_motif_version_2_1=no)])
3108 if test $emacs_cv_motif_version_2_1 = yes; then
3109 AC_CHECK_LIB(Xp, XpCreateContext, LIBXP=-lXp)
3110 if test x$emacs_cv_openmotif = xyes; then
3111 REAL_CPPFLAGS="-I/usr/include/openmotif $REAL_CPPFLAGS"
3114 AC_CACHE_CHECK(for LessTif where some systems put it, emacs_cv_lesstif,
3115 # We put this in CFLAGS temporarily to precede other -I options
3116 # that might be in CFLAGS temporarily.
3117 # We put this in CPPFLAGS where it precedes the other -I options.
3118 OLD_CPPFLAGS=$CPPFLAGS
3120 CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CPPFLAGS"
3121 CFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CFLAGS"
3122 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include </usr/X11R6/LessTif/Motif1.2/include/Xm/Xm.h>]],
3124 emacs_cv_lesstif=yes, emacs_cv_lesstif=no)])
3125 if test $emacs_cv_lesstif = yes; then
3126 # Make sure this -I option remains in CPPFLAGS after it is set
3127 # back to REAL_CPPFLAGS.
3128 # There is no need to change REAL_CFLAGS, because REAL_CFLAGS does not
3129 # have those other -I options anyway. Ultimately, having this
3130 # directory ultimately in CPPFLAGS will be enough.
3131 REAL_CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $REAL_CPPFLAGS"
3132 LDFLAGS="-L/usr/X11R6/LessTif/Motif1.2/lib $LDFLAGS"
3135 CPPFLAGS=$OLD_CPPFLAGS
3138 AC_CHECK_HEADER([Xm/BulletinB.h], [],
3139 [AC_MSG_ERROR([Motif toolkit requested but requirements not found.])])
3142 dnl Use toolkit scroll bars if configured for GTK or X toolkit and either
3143 dnl using Motif or Xaw3d is available, and unless
3144 dnl --with-toolkit-scroll-bars=no was specified.
3146 AH_TEMPLATE(USE_TOOLKIT_SCROLL_BARS,
3147 [Define to 1 if we should use toolkit scroll bars.])dnl
3148 USE_TOOLKIT_SCROLL_BARS=no
3149 if test "${with_toolkit_scroll_bars}" != "no"; then
3150 if test "${USE_X_TOOLKIT}" != "none"; then
3151 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3152 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3154 USE_TOOLKIT_SCROLL_BARS=yes
3155 elif test "${HAVE_XAW3D}" = "yes" || test "${USE_X_TOOLKIT}" = "LUCID"; then
3156 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3157 USE_TOOLKIT_SCROLL_BARS=yes
3159 elif test "${HAVE_GTK}" = "yes"; then
3160 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3161 USE_TOOLKIT_SCROLL_BARS=yes
3162 elif test "${HAVE_NS}" = "yes"; then
3163 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3164 USE_TOOLKIT_SCROLL_BARS=yes
3165 elif test "${HAVE_W32}" = "yes"; then
3166 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3167 USE_TOOLKIT_SCROLL_BARS=yes
3171 dnl See if XIM is available.
3172 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3173 #include <X11/Xlib.h>
3174 #include <X11/Xresource.h>]],
3175 [[XIMProc callback;]])],
3177 AC_DEFINE(HAVE_XIM, 1, [Define to 1 if XIM is available])],
3180 dnl '--with-xim' now controls only the initial value of use_xim at run time.
3182 if test "${with_xim}" != "no"; then
3183 AC_DEFINE(USE_XIM, 1,
3184 [Define to 1 if we should use XIM, if it is available.])
3188 if test "${HAVE_XIM}" != "no"; then
3190 if test "$GCC" = yes; then
3191 CFLAGS="$CFLAGS --pedantic-errors"
3193 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3194 #include <X11/Xlib.h>
3195 #include <X11/Xresource.h>]],
3201 XPointer *client_data;
3203 /* If we're not using GCC, it's probably not XFree86, and this is
3204 probably right, but we can't use something like --pedantic-errors. */
3205 extern Bool XRegisterIMInstantiateCallback(Display*, XrmDatabase, char*,
3206 char*, XIMProc, XPointer*);
3208 (void)XRegisterIMInstantiateCallback(display, db, res_name, res_class, callback,
3210 [emacs_cv_arg6_star=yes])
3211 AH_TEMPLATE(XRegisterIMInstantiateCallback_arg6,
3212 [Define to the type of the 6th arg of XRegisterIMInstantiateCallback,
3213 either XPointer or XPointer*.])dnl
3214 if test "$emacs_cv_arg6_star" = yes; then
3215 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer*])
3217 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer])
3222 ### Start of font-backend (under any platform) section.
3223 # (nothing here yet -- this is a placeholder)
3224 ### End of font-backend (under any platform) section.
3226 ### Start of font-backend (under X11) section.
3227 if test "${HAVE_X11}" = "yes"; then
3228 ## Use -lXft if available, unless '--with-xft=no'.
3230 if test "x${with_x}" = "xno"; then
3234 if test "$with_xft" != no; then
3235 EMACS_CHECK_MODULES([FONTCONFIG], [fontconfig >= 2.2.0])
3236 with_xft=$HAVE_FONTCONFIG
3239 if test "x${with_xft}" != "xno"; then
3241 EMACS_CHECK_MODULES([XFT], [xft >= 0.13.0], [], [HAVE_XFT=no])
3242 ## Because xftfont.c uses XRenderQueryExtension, we also
3243 ## need to link to -lXrender.
3245 AC_CHECK_LIB(Xrender, XRenderQueryExtension, HAVE_XRENDER=yes)
3246 if test "$HAVE_XFT" != no && test "$HAVE_XRENDER" != no; then
3247 OLD_CPPFLAGS="$CPPFLAGS"
3248 OLD_CFLAGS="$CFLAGS"
3250 CPPFLAGS="$CPPFLAGS $XFT_CFLAGS"
3251 CFLAGS="$CFLAGS $XFT_CFLAGS"
3252 XFT_LIBS="-lXrender $XFT_LIBS"
3253 LIBS="$XFT_LIBS $LIBS"
3254 AC_CHECK_HEADER(X11/Xft/Xft.h,
3255 AC_CHECK_LIB(Xft, XftFontOpen, HAVE_XFT=yes, , $XFT_LIBS) , ,
3256 [[#include <X11/X.h>]])
3258 if test "${HAVE_XFT}" = "yes"; then
3259 AC_DEFINE(HAVE_XFT, 1, [Define to 1 if you have the Xft library.])
3261 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $XFT_CFLAGS"
3262 fi # "${HAVE_XFT}" = "yes"
3263 CPPFLAGS=$OLD_CPPFLAGS
3266 fi # "$HAVE_XFT" != no
3267 fi # "x${with_xft}" != "xno"
3269 ## We used to allow building with FreeType and without Xft.
3270 ## However, the ftx font backend driver is not in good shape.
3271 if test "$HAVE_XFT" != "yes"; then
3272 dnl For the "Does Emacs use" message at the end.
3276 dnl Strict linkers fail with
3277 dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
3278 dnl if -lfreetype is not specified.
3279 dnl The following is needed to set FREETYPE_LIBS.
3280 EMACS_CHECK_MODULES([FREETYPE], [freetype2])
3282 test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(libxft requires libfreetype)
3286 if test "${HAVE_FREETYPE}" = "yes"; then
3287 AC_DEFINE(HAVE_FREETYPE, 1,
3288 [Define to 1 if using the freetype and fontconfig libraries.])
3289 if test "${with_libotf}" != "no"; then
3290 EMACS_CHECK_MODULES([LIBOTF], [libotf])
3291 if test "$HAVE_LIBOTF" = "yes"; then
3292 AC_DEFINE(HAVE_LIBOTF, 1, [Define to 1 if using libotf.])
3293 AC_CHECK_LIB(otf, OTF_get_variation_glyphs,
3294 HAVE_OTF_GET_VARIATION_GLYPHS=yes,
3295 HAVE_OTF_GET_VARIATION_GLYPHS=no)
3296 if test "${HAVE_OTF_GET_VARIATION_GLYPHS}" = "yes"; then
3297 AC_DEFINE(HAVE_OTF_GET_VARIATION_GLYPHS, 1,
3298 [Define to 1 if libotf has OTF_get_variation_glyphs.])
3302 dnl FIXME should there be an error if HAVE_FREETYPE != yes?
3303 dnl Does the new font backend require it, or can it work without it?
3307 if test "${HAVE_LIBOTF}" = yes; then
3308 if test "${with_m17n_flt}" != "no"; then
3309 EMACS_CHECK_MODULES([M17N_FLT], [m17n-flt])
3310 if test "$HAVE_M17N_FLT" = "yes"; then
3311 AC_DEFINE(HAVE_M17N_FLT, 1, [Define to 1 if using libm17n-flt.])
3322 ### End of font-backend (under X11) section.
3324 AC_SUBST(FREETYPE_CFLAGS)
3325 AC_SUBST(FREETYPE_LIBS)
3326 AC_SUBST(FONTCONFIG_CFLAGS)
3327 AC_SUBST(FONTCONFIG_LIBS)
3328 AC_SUBST(LIBOTF_CFLAGS)
3329 AC_SUBST(LIBOTF_LIBS)
3330 AC_SUBST(M17N_FLT_CFLAGS)
3331 AC_SUBST(M17N_FLT_LIBS)
3334 if test "${HAVE_X11}" = "yes"; then
3335 if test "${with_cairo}" != "no"; then
3336 CAIRO_REQUIRED=1.12.0
3337 CAIRO_MODULE="cairo >= $CAIRO_REQUIRED"
3338 EMACS_CHECK_MODULES(CAIRO, $CAIRO_MODULE)
3339 if test $HAVE_CAIRO = yes; then
3340 AC_DEFINE(USE_CAIRO, 1, [Define to 1 if using cairo.])
3342 AC_MSG_ERROR([cairo requested but not found.])
3345 CFLAGS="$CFLAGS $CAIRO_CFLAGS"
3346 LIBS="$LIBS $CAIRO_LIBS"
3347 AC_SUBST(CAIRO_CFLAGS)
3348 AC_SUBST(CAIRO_LIBS)
3352 if test "${HAVE_X11}" = "yes"; then
3353 AC_CHECK_HEADER(X11/Xlib-xcb.h,
3354 AC_CHECK_LIB(xcb, xcb_translate_coordinates, HAVE_XCB=yes))
3355 if test "${HAVE_XCB}" = "yes"; then
3356 AC_CHECK_LIB(X11-xcb, XGetXCBConnection, HAVE_X11_XCB=yes)
3357 if test "${HAVE_X11_XCB}" = "yes"; then
3358 AC_DEFINE(USE_XCB, 1,
3359 [Define to 1 if you have the XCB library and X11-XCB library for mixed
3360 X11/XCB programming.])
3361 XCB_LIBS="-lX11-xcb -lxcb"
3367 ### Use -lXpm if available, unless '--with-xpm=no'.
3368 ### mingw32 doesn't use -lXpm, since it loads the library dynamically.
3369 ### The Cygwin-w32 build uses <noX/xpm.h> instead of <X11/xpm.h>, so
3370 ### we need to set LDFLAGS accordingly.
3373 if test "${HAVE_W32}" = "yes" && test "${opsys}" = "cygwin"; then
3374 if test "${with_xpm}" != "no"; then
3375 SAVE_LDFLAGS="$LDFLAGS"
3376 LDFLAGS="$LDFLAGS -L/usr/lib/noX"
3377 AC_CHECK_HEADER(noX/xpm.h,
3378 [AC_CHECK_LIB(Xpm, XpmReadFileToImage, HAVE_XPM=yes)])
3379 if test "${HAVE_XPM}" = "yes"; then
3380 AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
3381 [emacs_cv_cpp_xpm_return_alloc_pixels],
3382 [AC_EGREP_CPP(no_return_alloc_pixels,
3383 [#include "noX/xpm.h"
3384 #ifndef XpmReturnAllocPixels
3385 no_return_alloc_pixels
3387 ], emacs_cv_cpp_xpm_return_alloc_pixels=no,
3388 emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
3390 if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
3392 LDFLAGS="$SAVE_LDFLAGS"
3397 if test "${HAVE_XPM}" = "yes"; then
3398 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3403 if test "${HAVE_X11}" = "yes"; then
3404 dnl Avoid Xpm on AIX unless requested, as it crashes; see Bug#17598.
3405 test "$opsys$with_xpm_set" = aix4-2 && with_xpm=no
3407 if test "${with_xpm}" != "no"; then
3408 AC_CHECK_HEADER(X11/xpm.h,
3409 [AC_CHECK_LIB(Xpm, XpmReadFileToPixmap, HAVE_XPM=yes, , -lX11)])
3410 if test "${HAVE_XPM}" = "yes"; then
3411 AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
3412 [emacs_cv_cpp_xpm_return_alloc_pixels],
3413 [AC_EGREP_CPP(no_return_alloc_pixels,
3414 [#include "X11/xpm.h"
3415 #ifndef XpmReturnAllocPixels
3416 no_return_alloc_pixels
3418 ], emacs_cv_cpp_xpm_return_alloc_pixels=no,
3419 emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
3421 if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
3427 if test "${HAVE_XPM}" = "yes"; then
3428 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3430 elif test "$opsys,$LUCID_LIBW" = aix4-2,-lXaw; then
3431 dnl AIX -lXaw needs -lXpm linked too; see Bug#17598 Message#152.
3436 ### FIXME: Perhaps regroup to minimize code duplication due to MinGW's
3437 ### slightly different requirements wrt image libraries (it doesn't
3438 ### use -lXpm because it loads the xpm shared library dynamically at
3440 if test "${opsys}" = "mingw32"; then
3441 if test "${with_xpm}" != "no"; then
3442 AC_CHECK_HEADER(X11/xpm.h, HAVE_XPM=yes, HAVE_XPM=no, [
3446 if test "${HAVE_XPM}" = "yes"; then
3447 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3453 ### Use -ljpeg if available, unless '--with-jpeg=no'.
3456 if test "${NS_IMPL_COCOA}" = yes; then
3457 : # Cocoa provides its own jpeg support, so do nothing.
3458 elif test "${with_jpeg}" != "no"; then
3459 AC_CACHE_CHECK([for jpeglib 6b or later],
3462 for emacs_cv_jpeglib in yes -ljpeg no; do
3463 case $emacs_cv_jpeglib in
3466 *) LIBS="$LIBS $emacs_cv_jpeglib";;
3470 [[#undef HAVE_STDLIB_H /* Avoid config.h/jpeglib.h collision. */
3471 #include <stdio.h> /* jpeglib.h needs FILE and size_t. */
3472 #include <jpeglib.h>
3474 char verify[JPEG_LIB_VERSION < 62 ? -1 : 1];
3475 struct jpeg_decompress_struct cinfo;
3478 jpeg_create_decompress (&cinfo);
3479 WARNMS (&cinfo, JWRN_JPEG_EOF);
3480 jpeg_destroy_decompress (&cinfo);
3482 [emacs_link_ok=yes],
3485 test $emacs_link_ok = yes && break
3487 if test "$emacs_cv_jpeglib" != no; then
3489 AC_DEFINE([HAVE_JPEG], 1,
3490 [Define to 1 if you have the jpeg library (typically -ljpeg).])
3491 ### mingw32 doesn't use -ljpeg, since it loads the library
3492 ### dynamically when needed, and doesn't want a run-time
3493 ### dependency on the jpeglib DLL.
3494 test "$emacs_cv_jpeglib" != yes && test "${opsys}" != "mingw32" \
3495 && LIBJPEG=$emacs_cv_jpeglib
3502 if test "${with_lcms2}" != "no"; then
3504 AC_SEARCH_LIBS([cmsCreateTransform], [lcms2], [HAVE_LCMS2=yes])
3506 case $ac_cv_search_cmsCreateTransform in
3507 -*) LIBLCMS2=$ac_cv_search_cmsCreateTransform ;;
3510 if test "${HAVE_LCMS2}" = "yes"; then
3511 AC_DEFINE([HAVE_LCMS2], 1, [Define to 1 if you have the lcms2 library (-llcms2).])
3512 ### mingw32 doesn't use -llcms2, since it loads the library dynamically.
3513 if test "${opsys}" = "mingw32"; then
3521 if test "${with_zlib}" != "no"; then
3523 AC_SEARCH_LIBS([inflateEnd], [z], [HAVE_ZLIB=yes])
3525 case $ac_cv_search_inflateEnd in
3526 -*) LIBZ=$ac_cv_search_inflateEnd ;;
3529 if test "${HAVE_ZLIB}" = "yes"; then
3530 AC_DEFINE([HAVE_ZLIB], 1, [Define to 1 if you have the zlib library (-lz).])
3531 ### mingw32 doesn't use -lz, since it loads the library dynamically.
3532 if test "${opsys}" = "mingw32"; then
3538 ### Dynamic modules support
3543 cygwin|mingw32) MODULES_SUFFIX=".dll" ;;
3544 *) MODULES_SUFFIX=".so" ;;
3546 if test "${with_modules}" != "no"; then
3552 cygwin|mingw32|darwin)
3556 # BSD systems have dlopen in libc.
3557 AC_CHECK_FUNC([dlopen], [HAVE_MODULES=yes])
3561 if test "${HAVE_MODULES}" = no; then
3562 AC_MSG_ERROR([Dynamic modules are not supported on your system])
3565 LIBS="$LIBS $LIBMODULES"
3566 AC_CHECK_FUNCS([dladdr dlfunc])
3571 if test "${HAVE_MODULES}" = yes; then
3572 MODULES_OBJ="dynlib.o emacs-module.o"
3573 AC_DEFINE(HAVE_MODULES, 1, [Define to 1 if dynamic modules are enabled])
3574 AC_DEFINE_UNQUOTED(MODULES_SUFFIX, "$MODULES_SUFFIX",
3575 [System extension for dynamic libraries])
3577 AC_SUBST(MODULES_OBJ)
3578 AC_SUBST(LIBMODULES)
3579 AC_SUBST(HAVE_MODULES)
3580 AC_SUBST(MODULES_SUFFIX)
3582 AC_CONFIG_FILES([src/emacs-module.h])
3583 AC_SUBST_FILE([module_env_snippet_25])
3584 AC_SUBST_FILE([module_env_snippet_26])
3585 module_env_snippet_25="$srcdir/src/module-env-25.h"
3586 module_env_snippet_26="$srcdir/src/module-env-26.h"
3588 ### Use -lpng if available, unless '--with-png=no'.
3592 if test "${NS_IMPL_COCOA}" = yes; then
3593 : # Cocoa provides its own png support, so do nothing.
3594 elif test "${with_png}" != no; then
3595 # mingw32 loads the library dynamically.
3596 if test "$opsys" = mingw32; then
3597 AC_CHECK_HEADER([png.h], [HAVE_PNG=yes])
3598 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3599 AC_MSG_CHECKING([for png])
3600 png_cflags=`(libpng-config --cflags) 2>&AS_MESSAGE_LOG_FD` &&
3601 png_ldflags=`(libpng-config --ldflags) 2>&AS_MESSAGE_LOG_FD` || {
3602 # libpng-config does not work; configure by hand.
3603 # Debian unstable as of July 2003 has multiple libpngs, and puts png.h
3604 # in /usr/include/libpng.
3605 if test -r /usr/include/libpng/png.h &&
3606 test ! -r /usr/include/png.h; then
3607 png_cflags=-I/usr/include/libpng
3615 CFLAGS="$CFLAGS $png_cflags"
3616 LIBS="$png_ldflags -lz -lm $LIBS"
3618 [AC_LANG_PROGRAM([[#include <png.h>]],
3619 [[return !png_get_channels (0, 0);]])],
3621 PNG_CFLAGS=`AS_ECHO(["$png_cflags"]) | sed -e "$edit_cflags"`
3623 # $LIBPNG requires explicit -lz in some cases.
3624 # We don't know what those cases are, exactly, so play it safe and
3625 # append -lz to any nonempty $LIBPNG, unless we're already using LIBZ.
3626 if test -n "$LIBPNG" && test -z "$LIBZ"; then
3627 LIBPNG="$LIBPNG -lz"
3631 AC_MSG_RESULT([$HAVE_PNG])
3634 if test $HAVE_PNG = yes; then
3635 AC_DEFINE([HAVE_PNG], [1], [Define to 1 if you have the png library.])
3638 CFLAGS="$CFLAGS $PNG_CFLAGS"
3639 AC_CHECK_DECL([png_longjmp],
3641 [AC_DEFINE([PNG_DEPSTRUCT], [],
3642 [Define to empty to suppress deprecation warnings when building
3643 with --enable-gcc-warnings and with libpng versions before 1.5,
3644 which lack png_longjmp.])],
3650 AC_SUBST(PNG_CFLAGS)
3652 ### Use -ltiff if available, unless '--with-tiff=no'.
3653 ### mingw32 doesn't use -ltiff, since it loads the library dynamically.
3656 if test "${opsys}" = "mingw32"; then
3657 if test "${with_tiff}" != "no"; then
3658 AC_CHECK_HEADER(tiffio.h, HAVE_TIFF=yes, HAVE_TIFF=no)
3660 if test "${HAVE_TIFF}" = "yes"; then
3661 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3663 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3664 if test "${with_tiff}" != "no"; then
3665 AC_CHECK_HEADER(tiffio.h,
3667 # At least one tiff package requires the jpeg library.
3668 if test "${HAVE_JPEG}" = yes; then tifflibs="-ljpeg $tifflibs"; fi
3669 AC_CHECK_LIB(tiff, TIFFGetVersion, HAVE_TIFF=yes, , $tifflibs)])
3672 if test "${HAVE_TIFF}" = "yes"; then
3673 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3674 dnl FIXME -lz -lm, as per libpng?
3680 ### Use -lgif or -lungif if available, unless '--with-gif=no'.
3681 ### mingw32 doesn't use -lgif/-lungif, since it loads the library dynamically.
3684 if test "${opsys}" = "mingw32"; then
3685 if test "${with_gif}" != "no"; then
3686 AC_CHECK_HEADER(gif_lib.h, HAVE_GIF=yes, HAVE_GIF=no)
3688 if test "${HAVE_GIF}" = "yes"; then
3689 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3691 elif test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no" \
3692 || test "${HAVE_W32}" = "yes"; then
3693 AC_CHECK_HEADER(gif_lib.h,
3694 # EGifPutExtensionLast only exists from version libungif-4.1.0b1.
3695 # Earlier versions can crash Emacs, but version 5.0 removes EGifPutExtensionLast.
3696 [AC_CHECK_LIB(gif, GifMakeMapObject, HAVE_GIF=yes,
3697 [AC_CHECK_LIB(gif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=maybe)])])
3699 if test "$HAVE_GIF" = yes; then
3701 elif test "$HAVE_GIF" = maybe; then
3702 # If gif_lib.h but no libgif, try libungif.
3703 AC_CHECK_LIB(ungif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=no)
3704 test "$HAVE_GIF" = yes && LIBGIF=-lungif
3707 if test "${HAVE_GIF}" = "yes"; then
3708 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3713 dnl Check for required libraries.
3716 if test "${HAVE_X11}" = "yes"; then
3717 test "${with_xpm}" != "no" && test "${HAVE_XPM}" != "yes" &&
3718 MISSING="libXpm" && WITH_NO="--with-xpm=no"
3719 test "${with_jpeg}" != "no" && test "${HAVE_JPEG}" != "yes" &&
3720 MISSING="$MISSING libjpeg" && WITH_NO="$WITH_NO --with-jpeg=no"
3721 test "${with_png}" != "no" && test "${HAVE_PNG}" != "yes" &&
3722 MISSING="$MISSING libpng" && WITH_NO="$WITH_NO --with-png=no"
3723 test "${with_gif}" != "no" && test "${HAVE_GIF}" != "yes" &&
3724 MISSING="$MISSING libgif/libungif" && WITH_NO="$WITH_NO --with-gif=no"
3725 test "${with_tiff}" != "no" && test "${HAVE_TIFF}" != "yes" &&
3726 MISSING="$MISSING libtiff" && WITH_NO="$WITH_NO --with-tiff=no"
3728 test "${with_gnutls}" != "no" && test "${HAVE_GNUTLS}" != "yes" &&
3729 MISSING="$MISSING gnutls" && WITH_NO="$WITH_NO --with-gnutls=no"
3730 if test "X${MISSING}" != X; then
3731 AC_MSG_ERROR([The following required libraries were not found:
3733 Maybe some development libraries/packages are missing?
3734 If you don't want to link with them give
3736 as options to configure])
3739 ### Use -lgpm if available, unless '--with-gpm=no'.
3742 if test "${with_gpm}" != "no"; then
3743 AC_CHECK_HEADER(gpm.h,
3744 [AC_CHECK_LIB(gpm, Gpm_Open, HAVE_GPM=yes)])
3746 if test "${HAVE_GPM}" = "yes"; then
3747 AC_DEFINE(HAVE_GPM, 1, [Define to 1 if you have the gpm library (-lgpm).])
3753 dnl Check for malloc/malloc.h on darwin
3754 AC_CHECK_HEADERS_ONCE(malloc/malloc.h)
3757 ### Use NeXTstep API to implement GUI.
3758 if test "${HAVE_NS}" = "yes"; then
3759 AC_DEFINE(HAVE_NS, 1, [Define to 1 if you are using the NeXTstep API, either GNUstep or Cocoa on macOS.])
3760 if test "${NS_IMPL_COCOA}" = "yes"; then
3761 AC_DEFINE(NS_IMPL_COCOA, 1, [Define to 1 if you are using NS windowing under macOS.])
3763 if test "${NS_IMPL_GNUSTEP}" = "yes"; then
3764 AC_DEFINE(NS_IMPL_GNUSTEP, 1, [Define to 1 if you are using NS windowing under GNUstep.])
3765 if test $NS_GNUSTEP_CONFIG != yes; then
3766 # See also .m.o rule in src/Makefile.in. */
3767 # FIXME: are all these flags really needed? Document here why. */
3768 GNUSTEP_CFLAGS="-D_REENTRANT -fPIC -fno-strict-aliasing -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
3769 ## Extra CFLAGS applied to src/*.m files.
3770 GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -fgnu-runtime -Wno-import -fconstant-string-class=NSConstantString -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGSWARN -DGSDIAGNOSE"
3776 ### Use session management (-lSM -lICE) if available
3779 if test "${HAVE_X11}" = "yes"; then
3780 AC_CHECK_HEADER(X11/SM/SMlib.h,
3781 [AC_CHECK_LIB(SM, SmcOpenConnection, HAVE_X_SM=yes, , -lICE)])
3783 if test "${HAVE_X_SM}" = "yes"; then
3784 AC_DEFINE(HAVE_X_SM, 1, [Define to 1 if you have the SM library (-lSM).])
3790 ### Use XRandr (-lXrandr) if available
3792 if test "${HAVE_X11}" = "yes"; then
3793 XRANDR_REQUIRED=1.2.2
3794 XRANDR_MODULES="xrandr >= $XRANDR_REQUIRED"
3795 EMACS_CHECK_MODULES([XRANDR], [$XRANDR_MODULES])
3796 if test $HAVE_XRANDR = no; then
3797 # Test old way in case pkg-config doesn't have it (older machines).
3798 # Include Xrender.h by hand to work around bug in older Xrandr.h
3799 # (e.g. RHEL5) and silence (harmless) configure warning (bug#18465).
3800 AC_CHECK_HEADER(X11/extensions/Xrandr.h,
3801 [AC_CHECK_LIB(Xrandr, XRRGetScreenResources, HAVE_XRANDR=yes)],
3802 [], [AC_INCLUDES_DEFAULT
3803 #include <X11/extensions/Xrender.h>])
3804 if test $HAVE_XRANDR = yes; then
3805 XRANDR_LIBS=-lXrandr
3808 if test $HAVE_XRANDR = yes; then
3809 AC_DEFINE(HAVE_XRANDR, 1, [Define to 1 if you have the XRandr extension.])
3812 AC_SUBST(XRANDR_CFLAGS)
3813 AC_SUBST(XRANDR_LIBS)
3815 ### Use Xinerama (-lXinerama) if available
3817 if test "${HAVE_X11}" = "yes"; then
3818 XINERAMA_REQUIRED=1.0.2
3819 XINERAMA_MODULES="xinerama >= $XINERAMA_REQUIRED"
3820 EMACS_CHECK_MODULES([XINERAMA], [$XINERAMA_MODULES])
3821 if test $HAVE_XINERAMA = no; then
3822 # Test old way in case pkg-config doesn't have it (older machines).
3823 AC_CHECK_HEADER(X11/extensions/Xinerama.h,
3824 [AC_CHECK_LIB(Xinerama, XineramaQueryExtension, HAVE_XINERAMA=yes)])
3825 if test $HAVE_XINERAMA = yes; then
3826 XINERAMA_LIBS=-lXinerama
3829 if test $HAVE_XINERAMA = yes; then
3830 AC_DEFINE(HAVE_XINERAMA, 1, [Define to 1 if you have the Xinerama extension.])
3833 AC_SUBST(XINERAMA_CFLAGS)
3834 AC_SUBST(XINERAMA_LIBS)
3836 ### Use Xfixes (-lXfixes) if available
3838 if test "${HAVE_X11}" = "yes"; then
3839 XFIXES_REQUIRED=4.0.0
3840 XFIXES_MODULES="xfixes >= $XFIXES_REQUIRED"
3841 EMACS_CHECK_MODULES([XFIXES], [$XFIXES_MODULES])
3842 if test $HAVE_XFIXES = no; then
3843 # Test old way in case pkg-config doesn't have it (older machines).
3844 AC_CHECK_HEADER(X11/extensions/Xfixes.h,
3845 [AC_CHECK_LIB(Xfixes, XFixesHideCursor, HAVE_XFIXES=yes)])
3846 if test $HAVE_XFIXES = yes; then
3847 XFIXES_LIBS=-lXfixes
3850 if test $HAVE_XFIXES = yes; then
3851 AC_DEFINE(HAVE_XFIXES, 1, [Define to 1 if you have the Xfixes extension.])
3854 AC_SUBST(XFIXES_CFLAGS)
3855 AC_SUBST(XFIXES_LIBS)
3857 ### Use Xdbe (-lXdbe) if available
3859 if test "${HAVE_X11}" = "yes"; then
3860 AC_CHECK_HEADER(X11/extensions/Xdbe.h,
3861 [AC_CHECK_LIB(Xext, XdbeAllocateBackBufferName, HAVE_XDBE=yes)],
3863 [#include <X11/Xlib.h>
3865 if test $HAVE_XDBE = yes; then
3868 if test $HAVE_XDBE = yes; then
3869 AC_DEFINE(HAVE_XDBE, 1, [Define to 1 if you have the Xdbe extension.])
3872 AC_SUBST(XDBE_CFLAGS)
3875 ### Use libxml (-lxml2) if available
3876 ### mingw32 doesn't use -lxml2, since it loads the library dynamically.
3878 if test "${with_xml2}" != "no"; then
3879 ### I'm not sure what the version number should be, so I just guessed.
3880 EMACS_CHECK_MODULES([LIBXML2], [libxml-2.0 > 2.6.17])
3881 # Built-in libxml2 on OS X 10.8 lacks libxml-2.0.pc.
3882 if test "${HAVE_LIBXML2}" != "yes" && test "$opsys" = "darwin"; then
3883 SAVE_CPPFLAGS="$CPPFLAGS"
3884 if test -z "$xcsdkdir" -a -n "$XCRUN" -a ! -d /usr/include; then
3885 dnl /usr/include is not found. Try Xcode SDK dir if it is sane.
3886 xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
3888 *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
3892 CPPFLAGS="$CPPFLAGS -isystem${xcsdkdir}/usr/include/libxml2"
3893 AC_CHECK_HEADER(libxml/HTMLparser.h,
3894 [AC_CHECK_DECL(HTML_PARSE_RECOVER, HAVE_LIBXML2=yes, ,
3895 [#include <libxml/HTMLparser.h>])])
3896 CPPFLAGS="$SAVE_CPPFLAGS"
3897 if test "${HAVE_LIBXML2}" = "yes"; then
3898 LIBXML2_CFLAGS="-isystem${xcsdkdir}/usr/include/libxml2"
3899 LIBXML2_LIBS="-lxml2"
3902 if test "${HAVE_LIBXML2}" = "yes"; then
3903 if test "${opsys}" != "mingw32"; then
3904 AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no,
3909 if test "${HAVE_LIBXML2}" = "yes"; then
3910 AC_DEFINE(HAVE_LIBXML2, 1, [Define to 1 if you have the libxml library (-lxml2).])
3917 AC_SUBST(LIBXML2_LIBS)
3918 AC_SUBST(LIBXML2_CFLAGS)
3922 if test ! "$with_mailutils"; then
3923 # Check for mail-locking functions in a "mail" library. Probably this should
3924 # have the same check as for liblockfile below.
3925 AC_CHECK_LIB([mail], [maillock], [have_mail=yes], [have_mail=no])
3926 if test $have_mail = yes; then
3928 AC_DEFINE([HAVE_LIBMAIL], [1],
3929 [Define to 1 if you have the 'mail' library (-lmail).])
3932 LIBS="$LIBS_MAIL $LIBS"
3933 AC_CHECK_FUNCS([touchlock])
3936 dnl Debian, at least:
3937 AC_CHECK_LIB([lockfile], [maillock], [have_lockfile=yes], [have_lockfile=no])
3938 if test $have_lockfile = yes; then
3939 LIBS_MAIL=-llockfile
3940 AC_DEFINE([HAVE_LIBLOCKFILE], [1],
3941 [Define to 1 if you have the 'lockfile' library (-llockfile).])
3943 # If we have the shared liblockfile, assume we must use it for mail
3944 # locking (e.g. Debian). If we couldn't link against liblockfile
3945 # (no liblockfile.a installed), ensure that we don't need to.
3946 dnl This works for files generally, not just executables.
3947 dnl Should we look elsewhere for it? Maybe examine /etc/ld.so.conf?
3948 AC_CHECK_PROG([liblockfile], [liblockfile.so], [yes], [no],
3949 [/usr/lib:/lib:/usr/local/lib:$LD_LIBRARY_PATH])
3950 if test "$ac_cv_prog_liblockfile" = yes; then
3951 AC_MSG_ERROR([Shared liblockfile found but can't link against it.
3952 This probably means that movemail could lose mail.
3953 There may be a 'development' package to install containing liblockfile.])
3956 AC_CHECK_HEADERS([maillock.h])
3958 ## Define MAIL_USE_FLOCK (or LOCKF) if the mailer uses flock (or lockf) to
3959 ## interlock access to the mail spool. The alternative is a lock file named
3960 ## /usr/spool/mail/$USER.lock.
3963 aix4-2) mail_lock="lockf" ;;
3965 gnu|freebsd|dragonfly|netbsd|openbsd|darwin) mail_lock="flock" ;;
3967 ## On GNU/Linux systems, both methods are used by various mail programs.
3968 ## I assume most people are using newer mailers that have heard of flock.
3969 ## Change this if you need to.
3970 ## Debian contains a patch which says: "On Debian/GNU/Linux systems,
3971 ## configure gets the right answers, and that means *NOT* using flock.
3972 ## Using flock is guaranteed to be the wrong thing. See Debian Policy
3973 ## for details." and then uses '#ifdef DEBIAN'. Unfortunately the
3974 ## Debian maintainer hasn't provided a clean fix for Emacs.
3975 ## movemail.c will use 'maillock' when MAILDIR, HAVE_LIBMAIL and
3976 ## HAVE_MAILLOCK_H are defined, so the following appears to be the
3977 ## correct logic. -- fx
3978 ## We must check for HAVE_LIBLOCKFILE too, as movemail does.
3979 ## liblockfile is a Free Software replacement for libmail, used on
3980 ## Debian systems and elsewhere. -rfr.
3983 if test $have_mail = yes || test $have_lockfile = yes; then
3984 test $ac_cv_header_maillock_h = yes && mail_lock=no
3988 mail_lock="none-needed" ;;
3992 flock) AC_DEFINE([MAIL_USE_FLOCK], [1],
3993 [Define if the mailer uses flock to interlock the mail spool.]);;
3995 lockf) AC_DEFINE([MAIL_USE_LOCKF], [1],
3996 [Define if the mailer uses lockf to interlock the mail spool.]);;
4000 *) BLESSMAIL_TARGET="need-blessmail" ;;
4003 AC_SUBST([BLESSMAIL_TARGET])
4004 AC_SUBST([LIBS_MAIL])
4007 LIBS="$LIB_PTHREAD $LIB_MATH $LIBS"
4008 AC_CHECK_FUNCS(accept4 fchdir gethostname \
4009 getrusage get_current_dir_name \
4010 lrand48 random rint trunc \
4011 select getpagesize setlocale newlocale \
4012 getrlimit setrlimit shutdown \
4013 pthread_sigmask strsignal setitimer \
4014 sendto recvfrom getsockname getifaddrs freeifaddrs \
4016 getpwent endpwent getgrent endgrent \
4017 cfmakeraw cfsetspeed __executable_start log2 prctl)
4020 dnl No need to check for posix_memalign if aligned_alloc works.
4021 AC_CHECK_FUNCS([aligned_alloc posix_memalign], [break])
4022 AC_CHECK_DECLS([aligned_alloc], [], [], [[#include <stdlib.h>]])
4024 dnl Cannot use AC_CHECK_FUNCS
4025 AC_CACHE_CHECK([for __builtin_frame_address],
4026 [emacs_cv_func___builtin_frame_address],
4027 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_frame_address (0);])],
4028 [emacs_cv_func___builtin_frame_address=yes],
4029 [emacs_cv_func___builtin_frame_address=no])])
4030 if test $emacs_cv_func___builtin_frame_address = yes; then
4031 AC_DEFINE([HAVE___BUILTIN_FRAME_ADDRESS], 1,
4032 [Define to 1 if you have the '__builtin_frame_address' function.])
4034 AC_CACHE_CHECK([for __builtin_unwind_init],
4035 emacs_cv_func___builtin_unwind_init,
4036 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_unwind_init ();])],
4037 emacs_cv_func___builtin_unwind_init=yes,
4038 emacs_cv_func___builtin_unwind_init=no)])
4039 if test $emacs_cv_func___builtin_unwind_init = yes; then
4040 AC_DEFINE(HAVE___BUILTIN_UNWIND_INIT, 1,
4041 [Define to 1 if you have the '__builtin_unwind_init' function.])
4044 AC_CHECK_HEADERS_ONCE(sys/un.h)
4049 AC_CHECK_FUNCS(grantpt)
4051 # PTY-related GNU extensions.
4052 AC_CHECK_FUNCS(getpt posix_openpt)
4054 dnl Run a test program that contains a call to tputs, a call that is
4055 dnl never executed. This tests whether a pre-'main' dynamic linker
4056 dnl works with the library. It's too much trouble to actually call
4057 dnl tputs in the test program, due to portability hassles. When
4058 dnl cross-compiling, assume the test program will run if it links.
4059 AC_DEFUN([tputs_link_source], [
4061 [[extern void tputs (const char *, int, int (*)(int));
4062 int main (int argc, char **argv)
4065 tputs (argv[0], 0, 0);
4069 # Check this now, so that we will NOT find the above functions in ncurses.
4070 # That is because we have not set up to link ncurses in lib-src.
4071 # It's better to believe a function is not available
4072 # than to expect to find it in ncurses.
4073 # Also we need tputs and friends to be able to build at all.
4074 AC_CACHE_CHECK([for library containing tputs], [emacs_cv_tputs_lib],
4075 [if test "${opsys}" = "mingw32"; then
4076 emacs_cv_tputs_lib='none required'
4078 # curses precedes termcap because of AIX (Bug#9736#35) and OpenIndiana.
4079 for tputs_library in '' tinfo ncurses terminfo curses termcap; do
4081 if test -z "$tputs_library"; then
4082 emacs_cv_tputs_lib='none required'
4084 emacs_cv_tputs_lib=-l$tputs_library
4085 LIBS="$emacs_cv_tputs_lib $LIBS"
4087 AC_RUN_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no],
4088 [AC_LINK_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no])])
4090 if test "X$emacs_cv_tputs_lib" != Xno; then
4095 AS_CASE(["$emacs_cv_tputs_lib"],
4096 [no], [AC_MSG_ERROR([The required function 'tputs' was not found in any library.
4097 The following libraries were tried (in order):
4098 libtinfo, libncurses, libterminfo, libcurses, libtermcap
4099 Please try installing whichever of these libraries is most appropriate
4100 for your system, together with its header files.
4101 For example, a libncurses-dev(el) or similar package.])],
4102 [-l*], [LIBS_TERMCAP=$emacs_cv_tputs_lib],
4103 [*], [LIBS_TERMCAP=])
4105 ## Use termcap instead of terminfo?
4106 ## Only true for: freebsd < 40000, ms-w32, msdos, netbsd < 599002500.
4108 ## FIXME? In the cases below where we unconditionally set
4109 ## LIBS_TERMCAP="-lncurses", this overrides LIBS_TERMCAP = -ltinfo,
4110 ## if that was found above to have tputs.
4111 ## Should we use the gnu* logic everywhere?
4113 ## darwin: Prevents crashes when running Emacs in Terminal.app under 10.2.
4114 ## The ncurses library has been moved out of the System framework in
4115 ## Mac OS X 10.2. So if configure detects it, set the command-line
4116 ## option to use it.
4117 darwin) LIBS_TERMCAP="-lncurses" ;;
4119 gnu*) test -z "$LIBS_TERMCAP" && LIBS_TERMCAP="-lncurses" ;;
4122 AC_MSG_CHECKING([whether FreeBSD is new enough to use terminfo])
4123 AC_CACHE_VAL(emacs_cv_freebsd_terminfo,
4124 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <osreldate.h>]],
4125 [[#if __FreeBSD_version < 400000
4128 ]])], emacs_cv_freebsd_terminfo=yes, emacs_cv_freebsd_terminfo=no)])
4130 AC_MSG_RESULT($emacs_cv_freebsd_terminfo)
4132 if test $emacs_cv_freebsd_terminfo = yes; then
4133 LIBS_TERMCAP="-lncurses"
4136 LIBS_TERMCAP="-ltermcap"
4146 if test "x$LIBS_TERMCAP" != "x-lterminfo"; then
4148 LIBS_TERMCAP="-ltermcap"
4152 openbsd | dragonfly) LIBS_TERMCAP="-lncurses" ;;
4154 ## hpux: Make sure we get select from libc rather than from libcurses
4155 ## because libcurses on HPUX 10.10 has a broken version of select.
4156 ## We used to use -lc -lcurses, but this may be cleaner.
4157 ## FIXME? But TERMINFO = yes on hpux (it used to be explicitly
4158 # set that way, now it uses the default). Isn't this a contradiction?
4159 hpux*) LIBS_TERMCAP="-ltermcap" ;;
4163 TERMCAP_OBJ=tparam.o
4164 if test $TERMINFO = yes; then
4165 AC_DEFINE(TERMINFO, 1, [Define to 1 if you use terminfo instead of termcap.])
4166 TERMCAP_OBJ=terminfo.o
4168 if test "X$LIBS_TERMCAP" = "X-lncurses"; then
4169 AC_DEFINE(USE_NCURSES, 1, [Define to 1 if you use ncurses.])
4171 AC_SUBST(LIBS_TERMCAP)
4172 AC_SUBST(TERMCAP_OBJ)
4174 # GNU/Linux-specific timer functions.
4175 AC_CACHE_CHECK([for timerfd interface], [emacs_cv_have_timerfd],
4177 [AC_LANG_PROGRAM([[#include <sys/timerfd.h>
4179 [[timerfd_create (CLOCK_REALTIME,
4180 TFD_CLOEXEC | TFD_NONBLOCK);
4181 timerfd_settime (0, TFD_TIMER_ABSTIME, 0, 0);]])],
4182 [emacs_cv_have_timerfd=yes],
4183 [emacs_cv_have_timerfd=no])])
4184 if test "$emacs_cv_have_timerfd" = yes; then
4185 AC_DEFINE([HAVE_TIMERFD], 1,
4186 [Define to 1 if timerfd functions are supported as in GNU/Linux.])
4189 # Alternate stack for signal handlers.
4190 AC_CACHE_CHECK([whether signals can be handled on alternate stack],
4191 [emacs_cv_alternate_stack],
4193 [AC_LANG_PROGRAM([[#include <signal.h>
4196 struct sigaction sa;
4197 ss.ss_sp = malloc (SIGSTKSZ);
4198 ss.ss_size = SIGSTKSZ;
4199 sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
4200 sigaltstack (&ss, 0);
4201 sigaction (SIGSEGV, &sa, 0);]])],
4202 [emacs_cv_alternate_stack=yes],
4203 [emacs_cv_alternate_stack=no])])
4205 # Do we need the Hesiod library to provide the support routines?
4206 dnl FIXME? Should we be skipping this on Darwin too?
4209 if test "$with_hesiod" != no ; then
4210 # Don't set $LIBS here -- see comments above. FIXME which comments?
4212 AC_CHECK_FUNC(res_send, , [AC_CHECK_FUNC(__res_send, ,
4213 [AC_CHECK_LIB(resolv, res_send, resolv=yes,
4214 [AC_CHECK_LIB(resolv, __res_send, resolv=yes)])])])
4215 if test "$resolv" = yes ; then
4221 AC_CHECK_FUNC(hes_getmailhost, , [AC_CHECK_LIB(hesiod, hes_getmailhost,
4222 hesiod=yes, :, $RESOLVLIB)])
4224 if test x"$hesiod" = xyes; then
4226 LIBRESOLV=$RESOLVLIB
4232 # These tell us which Kerberos-related libraries to use.
4239 if test "${with_kerberos}" != no; then
4241 AC_CHECK_LIB(com_err, com_err, have_com_err=yes, have_com_err=no)
4242 if test $have_com_err = yes; then
4243 COM_ERRLIB=-lcom_err
4244 LIBS="$COM_ERRLIB $LIBS"
4246 AC_CHECK_LIB(crypto, mit_des_cbc_encrypt, have_crypto=yes, have_crypto=no)
4247 if test $have_crypto = yes; then
4249 LIBS="$CRYPTOLIB $LIBS"
4251 AC_CHECK_LIB(k5crypto, mit_des_cbc_encrypt, have_k5crypto=yes, have_k5crypto=no)
4252 if test $have_k5crypto = yes; then
4253 CRYPTOLIB=-lk5crypto
4254 LIBS="$CRYPTOLIB $LIBS"
4256 AC_CHECK_LIB(krb5, krb5_init_context, have_krb5=yes, have_krb5=no)
4257 if test $have_krb5=yes; then
4259 LIBS="$KRB5LIB $LIBS"
4261 dnl FIXME Simplify. Does not match 22 logic, thanks to default_off?
4262 if test "${with_kerberos5}" = no; then
4263 AC_CHECK_LIB(des425, des_cbc_encrypt, have_des425=yes, have_des425=no )
4264 if test $have_des425 = yes; then
4266 LIBS="$DESLIB $LIBS"
4268 AC_CHECK_LIB(des, des_cbc_encrypt, have_des=yes, have_des=no)
4269 if test $have_des = yes; then
4271 LIBS="$DESLIB $LIBS"
4274 AC_CHECK_LIB(krb4, krb_get_cred, have_krb4=yes, have_krb4=no)
4275 if test $have_krb4 = yes; then
4277 LIBS="$KRB4LIB $LIBS"
4279 AC_CHECK_LIB(krb, krb_get_cred, have_krb=yes, have_krb=no)
4280 if test $have_krb = yes; then
4282 LIBS="$KRB4LIB $LIBS"
4287 if test "${with_kerberos5}" != no; then
4288 AC_CHECK_HEADERS(krb5.h,
4289 [AC_CHECK_MEMBERS([krb5_error.text, krb5_error.e_text],,,
4290 [#include <krb5.h>])])
4292 AC_CHECK_HEADERS(krb.h,,
4293 [AC_CHECK_HEADERS(kerberosIV/krb.h,,
4294 [AC_CHECK_HEADERS(kerberos/krb.h)])])
4296 AC_CHECK_HEADERS(com_err.h)
4300 AC_SUBST(COM_ERRLIB)
4306 AC_CHECK_HEADERS(valgrind/valgrind.h)
4308 AC_CHECK_MEMBERS([struct unipair.unicode], [], [], [[#include <linux/kd.h>]])
4310 AC_CHECK_FUNCS_ONCE([sbrk])
4313 AC_CHECK_FUNC(socket, , ok_so_far=no)
4314 if test $ok_so_far = yes; then
4315 AC_CHECK_HEADER(netinet/in.h, , ok_so_far=no)
4317 if test $ok_so_far = yes; then
4318 AC_CHECK_HEADER(arpa/inet.h, , ok_so_far=no)
4320 if test $ok_so_far = yes; then
4321 dnl Fixme: Not used. Should this be HAVE_SOCKETS?
4322 AC_DEFINE(HAVE_INET_SOCKETS, 1,
4323 [Define to 1 if you have inet sockets.])
4328 AC_CHECK_FUNCS(snprintf)
4330 dnl Check for glib. This differs from other library checks in that
4331 dnl Emacs need not link to glib unless some other library is already
4332 dnl linking to glib. Although glib provides no facilities that Emacs
4333 dnl needs for its own purposes, when glib is present Emacs needs to
4334 dnl use primitives like g_main_context_query to avoid clashing with
4335 dnl glib at a low level.
4337 dnl Check this late, since it depends on $GTK_CFLAGS etc.
4339 AC_CACHE_CHECK([whether GLib is linked in], [emacs_cv_links_glib],
4340 [OLDCFLAGS="$CFLAGS"
4342 CFLAGS="$CFLAGS $GTK_CFLAGS $RSVG_CFLAGS $DBUS_CFLAGS $SETTINGS_CFLAGS"
4343 LIBS="$LIBS $GTK_LIBS $RSVG_LIBS $DBUS_LIBS $SETTINGS_LIBS"
4344 CFLAGS="$CFLAGS $NOTIFY_CFLAGS $CAIRO_CFLAGS"
4345 LIBS="$LIBS $NOTIFY_LIBS $CAIRO_LIBS"
4346 AC_LINK_IFELSE([AC_LANG_PROGRAM(
4349 [[g_print ("Hello world");]])],
4350 [emacs_cv_links_glib=yes],
4351 [emacs_cv_links_glib=no])
4354 if test "${emacs_cv_links_glib}" = "yes"; then
4355 AC_DEFINE(HAVE_GLIB, 1, [Define to 1 if GLib is linked in.])
4356 if test "$HAVE_NS" = no;then
4362 dnl Adapted from Haible's version.
4363 AC_CACHE_CHECK([for nl_langinfo and CODESET], emacs_cv_langinfo_codeset,
4364 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
4365 [[char* cs = nl_langinfo(CODESET);]])],
4366 emacs_cv_langinfo_codeset=yes,
4367 emacs_cv_langinfo_codeset=no)
4369 if test $emacs_cv_langinfo_codeset = yes; then
4370 AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
4371 [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
4376 dnl Fixme: AC_SYS_POSIX_TERMIOS should probably be used, but it's not clear
4377 dnl how the tty code is related to POSIX and/or other versions of termios.
4378 dnl The following looks like a useful start.
4380 dnl AC_SYS_POSIX_TERMIOS
4381 dnl if test $ac_cv_sys_posix_termios = yes; then
4382 dnl AC_DEFINE(HAVE_TERMIOS, 1, [Define to 1 if you have POSIX-style functions
4383 dnl and macros for terminal control.])
4384 dnl AC_DEFINE(HAVE_TCATTR, 1, [Define to 1 if you have tcgetattr and tcsetattr.])
4387 dnl Turned on June 1996 supposing nobody will mind it.
4388 dnl MinGW emulates passwd database, so this feature doesn't make sense there.
4389 if test "${opsys}" != "mingw32"; then
4390 AC_DEFINE(AMPERSAND_FULL_NAME, 1, [Define to use the convention that &
4391 in the full name stands for the login id.])
4394 dnl Everybody supports this, except MS.
4395 dnl Seems like the kind of thing we should be testing for, though.
4396 ## Note: PTYs are broken on darwin <6. Use at your own risk.
4397 if test "${opsys}" != "mingw32"; then
4398 AC_DEFINE(HAVE_PTYS, 1, [Define if the system supports pty devices.])
4401 dnl Everybody supports this, except MS-DOS.
4402 dnl Seems like the kind of thing we should be testing for, though.
4403 dnl Compare with HAVE_INET_SOCKETS (which is unused...) above.
4404 AC_DEFINE(HAVE_SOCKETS, 1, [Define if the system supports
4405 4.2-compatible sockets.])
4407 AH_TEMPLATE(INTERNAL_TERMINAL, [This is substituted when $TERM is "internal".])
4409 AH_TEMPLATE(NULL_DEVICE, [Name of the file to open to get
4410 a null file, or a data sink.])
4411 if test "${opsys}" = "mingw32"; then
4412 AC_DEFINE(NULL_DEVICE, ["NUL:"])
4414 AC_DEFINE(NULL_DEVICE, ["/dev/null"])
4417 if test "${opsys}" = "mingw32"; then
4422 AC_DEFINE_UNQUOTED(SEPCHAR, ['$SEPCHAR'], [Character that separates PATH elements.])
4423 dnl This is for MinGW, and is used in test/Makefile.in.
4424 dnl The MSYS Bash has heuristics for replacing ':' with ';' when it
4425 dnl decides that a command-line argument to be passed to a MinGW program
4426 dnl is a PATH-style list of directories. But that heuristics plays it
4427 dnl safe, and only does the replacement when it is _absolutely_ sure it
4428 dnl sees a colon-separated list of file names; e.g. ":." is left alone,
4429 dnl which breaks in-tree builds. So we do this manually instead.
4430 dnl Note that we cannot rely on PATH_SEPARATOR, as that one will always
4431 dnl be computed as ':' in MSYS Bash.
4434 dnl Everybody supports this, except MS-DOS.
4435 AC_DEFINE(subprocesses, 1, [Define to enable asynchronous subprocesses.])
4437 AC_DEFINE(USER_FULL_NAME, [pw->pw_gecos], [How to get a user's full name.])
4440 AC_DEFINE(DIRECTORY_SEP, ['/'],
4441 [Character that separates directories in a file name.])
4443 if test "${opsys}" = "mingw32"; then
4444 AC_DEFINE(IS_DEVICE_SEP(_c_), [((_c_) == ':')],
4445 [Returns true if character is a device separator.])
4447 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == '/' || (_c_) == '\\')],
4448 [Returns true if character is a directory separator.])
4450 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP(_c_))],
4451 [Returns true if character is any form of separator.])
4453 AC_DEFINE(IS_DEVICE_SEP(_c_), 0,
4454 [Returns true if character is a device separator.])
4456 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == DIRECTORY_SEP)],
4457 [Returns true if character is a directory separator.])
4459 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_))],
4460 [Returns true if character is any form of separator.])
4463 if test "$USE_X_TOOLKIT" != "none"; then
4467 dnl Assar Westerlund <assar@sics.se> says this is necessary
4468 dnl for HP-UX 10.20, and that it works for HP-UX 0 as well.
4472 if test "$have_editres" != no && test ! -z "$LIBXMU"; then
4474 dnl See libXmu.a check above.
4475 if test x$HAVE_X11XTR6 = xyes; then
4476 LIBS="-lXt -lSM -lICE $LIBXMU"
4478 OTHERLIBS="-lXt -$LIBXMU"
4481 [#include <X11/Intrinsic.h>
4482 #include <X11/Xmu/Editres.h>],
4483 [_XEditResCheckMessages (0, 0, 0, 0);],
4484 [AC_DEFINE([X_TOOLKIT_EDITRES], 1,
4485 [Define to 1 if we should use XEditRes.])])
4492 dnl Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
4493 dnl instead, there's a system variable _sys_nsig. Unfortunately, we
4494 dnl need the constant to dimension an array. So wire in the appropriate
4496 AC_DEFINE(NSIG_MINIMUM, 32, [Minimum value of NSIG.])
4500 emacs_broken_SIGIO=no
4503 dnl SIGIO exists, but the feature doesn't work in the way Emacs needs.
4504 hpux* | nacl | openbsd | sol2* | unixware )
4505 emacs_broken_SIGIO=yes
4509 dnl On AIX Emacs uses the gmalloc.c malloc implementation. But given
4510 dnl the way this system works, libc functions that return malloced
4511 dnl memory use the libc malloc implementation. Calling xfree or
4512 dnl xrealloc on the results of such functions results in a crash.
4514 dnl One solution for this could be to define SYSTEM_MALLOC in configure,
4515 dnl but that does not currently work on this system.
4517 dnl It is possible to completely override the malloc implementation on
4518 dnl AIX, but that involves putting the malloc functions in a shared
4519 dnl library and setting the MALLOCTYPE environment variable to point to
4520 dnl that shared library.
4522 dnl Emacs currently calls xrealloc on the results of get_current_dir name,
4523 dnl to avoid a crash just use the Emacs implementation for that function.
4525 dnl FIXME We could change the AC_CHECK_FUNCS call near the start
4526 dnl of this file, so that we do not check for get_current_dir_name
4527 dnl on AIX. But that might be fragile if something else ends
4528 dnl up testing for get_current_dir_name as a dependency.
4529 AC_DEFINE(BROKEN_GET_CURRENT_DIR_NAME, 1, [Define if
4530 get_current_dir_name should not be used.])
4534 dnl Circumvent a bug in FreeBSD. In the following sequence of
4535 dnl writes/reads on a PTY, read(2) returns bogus data:
4537 dnl write(2) 1022 bytes
4538 dnl write(2) 954 bytes, get EAGAIN
4539 dnl read(2) 1024 bytes in process_read_output
4540 dnl read(2) 11 bytes in process_read_output
4542 dnl That is, read(2) returns more bytes than have ever been written
4543 dnl successfully. The 1033 bytes read are the 1022 bytes written
4544 dnl successfully after processing (for example with CRs added if the
4545 dnl terminal is set up that way which it is here). The same bytes will
4546 dnl be seen again in a later read(2), without the CRs.
4547 AC_DEFINE(BROKEN_PTY_READ_AFTER_EAGAIN, 1, [Define on FreeBSD to
4548 work around an issue when reading from a PTY.])
4554 dnl FIXME Can't we test if this exists (eg /proc/$$)?
4555 AC_DEFINE(HAVE_PROCFS, 1, [Define if you have the /proc filesystem.])
4560 darwin | dragonfly | freebsd | netbsd | openbsd )
4561 AC_DEFINE(DONT_REOPEN_PTY, 1, [Define if process.c does not need to
4562 close a pty to make it a controlling terminal (it is already a
4563 controlling terminal of the subprocess, because we did ioctl TIOCSCTTY).])
4567 dnl FIXME Surely we can test for this rather than hard-code it.
4569 netbsd | openbsd) sound_device="/dev/audio" ;;
4570 *) sound_device="/dev/dsp" ;;
4574 AC_DEFINE_UNQUOTED(DEFAULT_SOUND_DEVICE, "$sound_device",
4575 [Name of the default sound device.])
4578 dnl Emacs can read input using SIGIO and buffering characters itself,
4579 dnl or using CBREAK mode and making C-g cause SIGINT.
4580 dnl The choice is controlled by the variable interrupt_input.
4582 dnl Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
4584 dnl Emacs uses the presence of the USABLE_SIGIO macro
4585 dnl to indicate whether or not signal-driven I/O is possible. It uses
4586 dnl INTERRUPT_INPUT to decide whether to use it by default.
4588 dnl SIGIO can be used only on systems that implement it (4.2 and 4.3).
4589 dnl CBREAK mode has two disadvantages
4590 dnl 1) At least in 4.2, it is impossible to handle the Meta key properly.
4591 dnl I hear that in system V this problem does not exist.
4592 dnl 2) Control-G causes output to be discarded.
4593 dnl I do not know whether this can be fixed in system V.
4595 dnl Another method of doing input is planned but not implemented.
4596 dnl It would have Emacs fork off a separate process
4597 dnl to read the input and send it to the true Emacs process
4600 darwin | gnu-linux | gnu-kfreebsd )
4601 AC_DEFINE(INTERRUPT_INPUT, 1, [Define to read input using SIGIO.])
4606 dnl If the system's imake configuration file defines 'NeedWidePrototypes'
4607 dnl as 'NO', we must define NARROWPROTO manually. Such a define is
4608 dnl generated in the Makefile generated by 'xmkmf'. If we don't define
4609 dnl NARROWPROTO, we will see the wrong function prototypes for X functions
4610 dnl taking float or double parameters.
4612 cygwin|gnu|gnu-linux|gnu-kfreebsd|freebsd|netbsd|openbsd)
4613 AC_DEFINE(NARROWPROTO, 1, [Define if system's imake configuration
4614 file defines 'NeedWidePrototypes' as 'NO'.])
4619 dnl Used in process.c, this must be a loop, even if it only runs once.
4620 AH_TEMPLATE(PTY_ITERATION, [How to iterate over PTYs.])
4621 dnl Only used if !PTY_ITERATION. Iterate from FIRST_PTY_LETTER to z,
4622 dnl trying suffixes 0-16.
4623 AH_TEMPLATE(FIRST_PTY_LETTER, [Letter to use in finding device name of
4624 first PTY, if PTYs are supported.])
4625 AH_TEMPLATE(PTY_OPEN, [How to open a PTY, if non-standard.])
4626 AH_TEMPLATE(PTY_NAME_SPRINTF, [How to get the device name of the control
4627 end of a PTY, if non-standard.])
4628 AH_TEMPLATE(PTY_TTY_NAME_SPRINTF, [How to get device name of the tty
4629 end of a PTY, if non-standard.])
4633 AC_DEFINE(PTY_ITERATION, [int c; for (c = 0; !c ; c++)])
4634 dnl You allocate a pty by opening /dev/ptc to get the master side.
4635 dnl To get the name of the slave side, you just ttyname() the master side.
4636 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptc");])
4637 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [strcpy (pty_name, ttyname (fd));])
4641 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4642 dnl multi-line AC_DEFINEs are hard. :(
4643 AC_DEFINE(PTY_OPEN, [ do { int dummy; sigset_t blocked, procmask; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, &procmask); if (-1 == openpty (&fd, &dummy, pty_name, 0, 0)) fd = -1; pthread_sigmask (SIG_SETMASK, &procmask, 0); if (fd >= 0) emacs_close (dummy); } while (false)])
4644 AC_DEFINE(PTY_NAME_SPRINTF, [])
4645 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
4648 gnu | openbsd | qnxnto )
4649 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4652 gnu-linux | gnu-kfreebsd | dragonfly | freebsd | netbsd | darwin | nacl )
4654 if test "x$ac_cv_func_grantpt" = xyes; then
4655 AC_DEFINE(UNIX98_PTYS, 1, [Define if the system has Unix98 PTYs.])
4656 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4657 dnl Note that grantpt and unlockpt may fork. We must block SIGCHLD
4658 dnl to prevent sigchld_handler from intercepting the child's death.
4659 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptyname = 0; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); if (grantpt (fd) != -1 && unlockpt (fd) != -1) ptyname = ptsname(fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (!ptyname) { emacs_close (fd); return -1; } snprintf (pty_name, PTY_NAME_SIZE, "%s", ptyname); }])
4660 dnl if HAVE_POSIX_OPENPT
4661 if test "x$ac_cv_func_posix_openpt" = xyes; then
4662 AC_DEFINE(PTY_OPEN, [do { fd = posix_openpt (O_RDWR | O_CLOEXEC | O_NOCTTY); if (fd < 0 && errno == EINVAL) fd = posix_openpt (O_RDWR | O_NOCTTY); } while (false)])
4663 AC_DEFINE(PTY_NAME_SPRINTF, [])
4665 elif test "x$ac_cv_func_getpt" = xyes; then
4666 AC_DEFINE(PTY_OPEN, [fd = getpt ()])
4667 AC_DEFINE(PTY_NAME_SPRINTF, [])
4669 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4672 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4677 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4678 AC_DEFINE(PTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/ptym/pty%c%x", c, i);])
4679 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/pty/tty%c%x", c, i);])
4683 dnl On SysVr4, grantpt(3) forks a subprocess, so do not use
4684 dnl O_CLOEXEC when opening the pty, and keep the SIGCHLD handler
4685 dnl from intercepting that death. If any child but grantpt's should die
4686 dnl within, it should be caught after sigrelse(2).
4687 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4688 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptsname (int), *ptyname; int grantpt_result; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); grantpt_result = grantpt (fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (grantpt_result == -1 || unlockpt (fd) == -1 || !(ptyname = ptsname (fd))) { emacs_close (fd); return -1; } snprintf (pty_name, PTY_NAME_SIZE, "%s", ptyname); }])
4692 dnl Comments are as per sol2*.
4693 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4694 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [{ char *ptsname (int), *ptyname; int grantpt_result; sigset_t blocked; sigemptyset (&blocked); sigaddset (&blocked, SIGCHLD); pthread_sigmask (SIG_BLOCK, &blocked, 0); grantpt_result = grantpt (fd); pthread_sigmask (SIG_UNBLOCK, &blocked, 0); if (grantpt_result == -1) fatal("could not grant slave pty"); if (unlockpt(fd) == -1) fatal("could not unlock slave pty"); if (!(ptyname = ptsname(fd))) fatal ("could not enable slave pty"); snprintf (pty_name, PTY_NAME_SIZE, "%s", ptyname); }])
4701 dnl This change means that we don't loop through allocate_pty too
4702 dnl many times in the (rare) event of a failure.
4703 AC_DEFINE(FIRST_PTY_LETTER, ['z'])
4704 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4705 dnl Push various streams modules onto a PTY channel. Used in process.c.
4706 AC_DEFINE(SETUP_SLAVE_PTY, [if (ioctl (forkin, I_PUSH, "ptem") == -1) fatal ("ioctl I_PUSH ptem"); if (ioctl (forkin, I_PUSH, "ldterm") == -1) fatal ("ioctl I_PUSH ldterm"); if (ioctl (forkin, I_PUSH, "ttcompat") == -1) fatal ("ioctl I_PUSH ttcompat");], [How to set up a slave PTY, if needed.])
4711 AH_TEMPLATE(SIGNALS_VIA_CHARACTERS, [Make process_send_signal work by
4712 "typing" a signal character on the pty.])
4715 dnl Perry Smith <pedz@ddivt1.austin.ibm.com> says this is correct for AIX.
4716 aix4-2 | cygwin | gnu | dragonfly | freebsd | netbsd | openbsd | darwin )
4717 AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4720 dnl 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works.
4721 dnl FIXME Does gnu-kfreebsd have linux/version.h? It seems unlikely...
4722 gnu-linux | gnu-kfreebsd )
4724 AC_CACHE_CHECK([for signals via characters], [emacs_cv_signals_via_chars],
4725 [AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4726 #include <linux/version.h>
4727 #if LINUX_VERSION_CODE < 0x20400
4728 # error "Linux version too old"
4730 ]], [[]])], emacs_cv_signals_via_chars=yes, emacs_cv_signals_via_chars=no)])
4732 test "$emacs_cv_signals_via_chars" = yes && AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4737 AH_TEMPLATE(TAB3, [Undocumented.])
4740 darwin) AC_DEFINE(TAB3, OXTABS) ;;
4742 gnu | dragonfly | freebsd | netbsd | openbsd )
4743 AC_DEFINE(TABDLY, OXTABS, [Undocumented.])
4744 AC_DEFINE(TAB3, OXTABS)
4747 gnu-linux | gnu-kfreebsd )
4748 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4752 ]], [[]])], AC_DEFINE(GC_MARK_SECONDARY_STACK(),
4753 [do { extern void *__libc_ia64_register_backing_store_base; __builtin_ia64_flushrs (); mark_memory (__libc_ia64_register_backing_store_base, __builtin_ia64_bsp ());} while (false)],
4754 [Mark a secondary stack, like the register stack on the ia64.]), [])
4758 AC_DEFINE(RUN_TIME_REMAP, 1, [Define if emacs.c needs to call
4759 run_time_remap; for HPUX.])
4764 dnl This won't be used automatically yet. We also need to know, at least,
4765 dnl that the stack is continuous.
4766 AH_TEMPLATE(GC_SETJMP_WORKS, [Define if setjmp is known to save all
4767 registers relevant for conservative garbage collection in the jmp_buf.])
4771 dnl Not all the architectures are tested, but there are Debian packages
4772 dnl for SCM and/or Guile on them, so the technique must work. See also
4773 dnl comments in alloc.c concerning setjmp and gcc.
4774 dnl Fixme: it's probably safe to just use the GCC conditional below.
4775 gnu-linux | gnu-kfreebsd )
4776 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4777 #if defined __i386__ || defined __sparc__ || defined __mc68000__ \
4778 || defined __alpha__ || defined __mips__ || defined __s390__ \
4779 || defined __arm__ || defined __powerpc__ || defined __amd64__ \
4780 || defined __ia64__ || defined __sh__
4783 # error "setjmp not known to work on this arch"
4785 ]], [[]])], AC_DEFINE(GC_SETJMP_WORKS, 1))
4790 if test x$GCC = xyes; then
4791 dnl GC_SETJMP_WORKS is nearly always appropriate for GCC.
4792 AC_DEFINE(GC_SETJMP_WORKS, 1)
4795 aix* | dragonfly | freebsd | netbsd | openbsd | sol2* )
4796 AC_DEFINE(GC_SETJMP_WORKS, 1)
4801 dnl In a weird quirk, MS runtime uses _setjmp and longjmp.
4802 AC_CACHE_CHECK([for _setjmp], [emacs_cv_func__setjmp],
4805 [[#include <setjmp.h>
4807 # define _longjmp longjmp
4812 _longjmp (j, 1);]])],
4813 [emacs_cv_func__setjmp=yes],
4814 [emacs_cv_func__setjmp=no])])
4815 if test $emacs_cv_func__setjmp = yes; then
4816 AC_DEFINE([HAVE__SETJMP], 1, [Define to 1 if _setjmp and _longjmp work.])
4819 # We need to preserve signal mask to handle C stack overflows.
4820 AC_CACHE_CHECK([for sigsetjmp], [emacs_cv_func_sigsetjmp],
4823 [[#include <setjmp.h>
4826 if (! sigsetjmp (j, 1))
4827 siglongjmp (j, 1);]])],
4828 [emacs_cv_func_sigsetjmp=yes],
4829 [emacs_cv_func_sigsetjmp=no])])
4830 if test $emacs_cv_func_sigsetjmp = yes; then
4831 AC_DEFINE([HAVE_SIGSETJMP], 1,
4832 [Define to 1 if sigsetjmp and siglongjmp work.])
4835 case $emacs_cv_func_sigsetjmp,$emacs_cv_alternate_stack,$opsys in
4836 yes,yes,* | *,*,mingw32)
4837 AC_DEFINE([HAVE_STACK_OVERFLOW_HANDLING], 1,
4838 [Define to 1 if C stack overflow can be handled in some cases.]);;
4843 dnl TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
4844 dnl subprocesses the usual way. But TIOCSIGNAL does work for PTYs,
4845 dnl and this is all we need.
4846 AC_DEFINE(TIOCSIGSEND, TIOCSIGNAL, [Some platforms redefine this.])
4853 dnl Used in xfaces.c.
4854 AC_DEFINE(XOS_NEEDS_TIME_H, 1, [Compensate for a bug in Xos.h on
4855 some systems, where it requires time.h.])
4860 dnl Define symbols to identify the version of Unix this is.
4861 dnl Define all the symbols that apply correctly.
4862 AH_TEMPLATE(DOS_NT, [Define if the system is MS DOS or MS Windows.])
4863 AH_TEMPLATE(MSDOS, [Define if the system is MS DOS.])
4864 AH_TEMPLATE(USG, [Define if the system is compatible with System III.])
4865 AH_TEMPLATE(USG5_4, [Define if the system is compatible with System V Release 4.])
4870 dnl This symbol should be defined on AIX Version 3 ???????
4871 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4873 # error "_AIX not defined"
4875 ]], [[]])], [], AC_DEFINE(_AIX, [], [Define if the system is AIX.]))
4879 AC_DEFINE(CYGWIN, 1, [Define if the system is Cygwin.])
4883 dnl Not __APPLE__, as this may not be defined on non-macOS Darwin.
4884 dnl Not DARWIN, because Panther and lower CoreFoundation.h use DARWIN to
4885 dnl distinguish macOS from pure Darwin.
4886 AC_DEFINE(DARWIN_OS, [], [Define if the system is Darwin.])
4889 gnu-linux | gnu-kfreebsd )
4891 AC_DEFINE(GNU_LINUX, [], [Define if ths system is compatible with GNU/Linux.])
4896 AC_DEFINE(HPUX, [], [Define if the system is HPUX.])
4900 AC_DEFINE(DOS_NT, [])
4901 AC_DEFINE(WINDOWSNT, 1, [Define if compiling for native MS Windows.])
4902 if test "x$ac_enable_checking" != "x" ; then
4903 AC_DEFINE(EMACSDEBUG, 1, [Define to 1 to enable w32 debug facilities.])
4909 AC_DEFINE(USG5_4, [])
4910 AC_DEFINE(SOLARIS2, [], [Define if the system is Solaris.])
4915 AC_DEFINE(USG5_4, [])
4919 AC_CACHE_CHECK([for usable FIONREAD], [emacs_cv_usable_FIONREAD],
4922 dnl BUILD 9008 - FIONREAD problem still exists in X-Windows.
4923 emacs_cv_usable_FIONREAD=no
4927 emacs_cv_usable_FIONREAD=yes
4932 [AC_LANG_PROGRAM([[#include <sys/types.h>
4933 #include <sys/ioctl.h>
4935 # include <sys/filio.h>
4938 [[int foo = ioctl (0, FIONREAD, &foo);]])],
4939 [emacs_cv_usable_FIONREAD=yes],
4940 [emacs_cv_usable_FIONREAD=no])
4943 if test $emacs_cv_usable_FIONREAD = yes; then
4944 AC_DEFINE([USABLE_FIONREAD], [1], [Define to 1 if FIONREAD is usable.])
4946 if test $emacs_broken_SIGIO = no; then
4947 AC_CACHE_CHECK([for usable SIGIO], [emacs_cv_usable_SIGIO],
4949 [AC_LANG_PROGRAM([[#include <fcntl.h>
4952 [[int foo = SIGIO | F_SETFL | FASYNC;]])],
4953 [emacs_cv_usable_SIGIO=yes],
4954 [emacs_cv_usable_SIGIO=no])],
4955 [emacs_cv_usable_SIGIO=yes],
4956 [emacs_cv_usable_SIGIO=no])
4957 if test $emacs_cv_usable_SIGIO = yes; then
4958 AC_DEFINE([USABLE_SIGIO], [1], [Define to 1 if SIGIO is usable.])
4965 dnl It works to open the pty's tty in the parent (Emacs), then
4966 dnl close and reopen it in the child.
4967 AC_DEFINE(USG_SUBTTY_WORKS, 1, [Define for USG systems where it
4968 works to open a pty's tty in the parent process, then close and
4969 reopen it in the child.])
4973 AC_DEFINE(_STRUCTURED_PROC, 1, [Needed for system_process_attributes
4978 # Set up the CFLAGS for real compilation, so we can substitute it.
4979 CFLAGS="$REAL_CFLAGS"
4980 CPPFLAGS="$REAL_CPPFLAGS"
4983 ## Hack to detect a buggy GCC version.
4984 if test "$GCC" = yes && \
4985 $CC --version 2> /dev/null | grep 'gcc.* 4.5.0' >/dev/null; then
4987 *-fno-optimize-sibling-calls*) ;;
4989 AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS.]);;
4993 version=$PACKAGE_VERSION
4995 copyright="Copyright (C) 2018 Free Software Foundation, Inc."
4996 AC_DEFINE_UNQUOTED(COPYRIGHT, ["$copyright"],
4997 [Short copyright string for this version of Emacs.])
5000 ### Specify what sort of things we'll be editing into Makefile and config.h.
5001 ### Use configuration here uncanonicalized to avoid exceeding size limits.
5003 AC_SUBST(configuration)
5008 AC_SUBST(exec_prefix)
5011 AC_SUBST(sharedstatedir)
5012 AC_SUBST(libexecdir)
5016 AC_SUBST(standardlisppath)
5017 AC_SUBST(locallisppath)
5019 AC_SUBST(x_default_search_path)
5021 AC_SUBST(archlibdir)
5027 ## FIXME? Nothing uses @LD_SWITCH_X_SITE@.
5028 ## src/Makefile.in did add LD_SWITCH_X_SITE (as a cpp define) to the
5029 ## end of LIBX_BASE, but nothing ever set it.
5030 AC_SUBST(LD_SWITCH_X_SITE)
5031 AC_SUBST(C_SWITCH_X_SITE)
5032 AC_SUBST(GNUSTEP_CFLAGS)
5034 ## Used in lwlib/Makefile.in.
5035 AC_SUBST(X_TOOLKIT_TYPE)
5037 AC_SUBST(ns_appbindir)
5038 AC_SUBST(ns_appresdir)
5040 AC_SUBST(GNU_OBJC_CFLAGS)
5041 AC_SUBST(OTHER_FILES)
5043 if test -n "${term_header}"; then
5044 AC_DEFINE_UNQUOTED(TERM_HEADER, "${term_header}",
5045 [Define to the header for the built-in window system.])
5048 AC_DEFINE_UNQUOTED(EMACS_CONFIGURATION, "${canonical}",
5049 [Define to the canonical Emacs configuration name.])
5050 AC_DEFINE_UNQUOTED(EMACS_CONFIG_OPTIONS, "${emacs_config_options}",
5051 [Define to the options passed to configure.])
5056 if test "${HAVE_X_WINDOWS}" = "yes" ; then
5057 AC_DEFINE(HAVE_X_WINDOWS, 1,
5058 [Define to 1 if you want to use the X window system.])
5060 XOBJ="xterm.o xfns.o xselect.o xrdb.o xsmfns.o xsettings.o"
5062 if test "$HAVE_CAIRO" = "yes"; then
5063 FONT_OBJ="ftfont.o ftcrfont.o"
5064 elif test "$HAVE_XFT" = "yes"; then
5065 FONT_OBJ="$FONT_OBJ ftfont.o xftfont.o ftxfont.o"
5066 elif test "$HAVE_FREETYPE" = "yes"; then
5067 FONT_OBJ="$FONT_OBJ ftfont.o ftxfont.o"
5077 if test "${USE_X_TOOLKIT}" != "none" ; then
5079 AC_DEFINE(USE_X_TOOLKIT, 1, [Define to 1 if using an X toolkit.])
5080 if test "${USE_X_TOOLKIT}" = "LUCID"; then
5081 AC_DEFINE(USE_LUCID, 1, [Define to 1 if using the Lucid X toolkit.])
5082 elif test "${USE_X_TOOLKIT}" = "MOTIF"; then
5083 AC_DEFINE(USE_MOTIF, 1, [Define to 1 if using the Motif X toolkit.])
5087 ## Paul Abrahams <abrahams at equinox.shaysnet.com> says this is needed.
5088 MOTIF_LIBW="$MOTIF_LIBW -lXpm"
5092 ## Richard Anthony Ryan <ryanr at ellingtn.ftc.nrcs.usda.gov>
5093 ## says -lXimp is needed in UNIX_SV ... 4.2 1.1.2.
5094 MOTIF_LIBW="MOTIF_LIBW -lXimp"
5098 ## olson@mcs.anl.gov says -li18n is needed by -lXm.
5099 MOTIF_LIBW="$MOTIF_LIBW -li18n"
5102 MOTIF_LIBW="$MOTIF_LIBW $LIBXP"
5105 AC_SUBST(WIDGET_OBJ)
5108 case "$USE_X_TOOLKIT" in
5109 MOTIF) TOOLKIT_LIBW="$MOTIF_LIBW" ;;
5110 LUCID) TOOLKIT_LIBW="$LUCID_LIBW" ;;
5111 none) test "x$HAVE_GTK" = "xyes" && TOOLKIT_LIBW="$GTK_LIBS" ;;
5113 if test "$HAVE_XWIDGETS" = "yes"; then
5114 TOOLKIT_LIBW="$TOOLKIT_LIBW -lXcomposite"
5116 AC_SUBST(TOOLKIT_LIBW)
5118 if test "${opsys}" != "mingw32"; then
5119 if test "$USE_X_TOOLKIT" = "none"; then
5120 LIBXT_OTHER="\$(LIBXSM)"
5122 LIBXT_OTHER="\$(LIBXMU) -lXt \$(LIBXTR6) -lXext"
5125 AC_SUBST(LIBXT_OTHER)
5127 if test "${HAVE_X11}" = "yes" ; then
5128 AC_DEFINE(HAVE_X11, 1,
5129 [Define to 1 if you want to use version 11 of X windows.])
5130 LIBX_OTHER="\$(LIBXT) \$(LIBX_EXTRA)"
5134 AC_SUBST(LIBX_OTHER)
5137 if test "$HAVE_GTK" = yes || test "$HAVE_X11" != yes; then
5139 elif test "$USE_X_TOOLKIT" = none; then
5141 LIBXMENU='$(oldXMenudir)/libXMenu11.a'
5142 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS oldXMenu"
5144 LIBXMENU='$(lwlibdir)/liblw.a'
5145 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS lwlib"
5149 if test "${GNU_MALLOC}" = "yes" ; then
5150 AC_DEFINE(GNU_MALLOC, 1,
5151 [Define to 1 if you want to use the GNU memory allocator.])
5155 if test "${REL_ALLOC}" = "yes" ; then
5156 AC_DEFINE(REL_ALLOC, 1,
5157 [Define REL_ALLOC if you want to use the relocating allocator for
5160 test "$system_malloc" != "yes" && RALLOC_OBJ=ralloc.o
5162 AC_SUBST(RALLOC_OBJ)
5164 if test "$opsys" = "cygwin"; then
5165 CYGWIN_OBJ="cygw32.o"
5166 ## Cygwin differs because of its unexec().
5168 POST_ALLOC_OBJ=lastfile.o
5169 elif test "$opsys" = "mingw32"; then
5172 POST_ALLOC_OBJ=lastfile.o
5175 PRE_ALLOC_OBJ=lastfile.o
5178 AC_SUBST(CYGWIN_OBJ)
5179 AC_SUBST(PRE_ALLOC_OBJ)
5180 AC_SUBST(POST_ALLOC_OBJ)
5182 dnl Call this 'FORTIFY_SOUR' so that it sorts before the 'FORTIFY_SOURCE'
5183 dnl verbatim defined above. The tricky name is apropos, as this hack
5184 dnl makes Fortify go sour!
5185 AH_VERBATIM([FORTIFY_SOUR],
5186 [/* Without the following workaround, Emacs runs slowly on OS X 10.8.
5187 The workaround disables some useful run-time checking, so it
5188 should be conditional to the platforms with the performance bug.
5189 Perhaps Apple will fix this some day; also see m4/extern-inline.m4. */
5190 #if defined __APPLE__ && defined __GNUC__
5191 # ifndef _DONT_USE_CTYPE_INLINE_
5192 # define _DONT_USE_CTYPE_INLINE_
5194 # ifndef _FORTIFY_SOURCE
5195 # define _FORTIFY_SOURCE 0
5200 # If user asks to omit features, disable optional features that gnulib
5201 # might otherwise enable.
5202 if test "$with_features" = no && test "$enable_acl" != yes; then
5206 # Configure gnulib. Although this does not affect CFLAGS or LIBS permanently.
5207 # it temporarily reverts them to their pre-pkg-config values,
5208 # because gnulib needs to work with both src (which uses the
5209 # pkg-config stuff) and lib-src (which does not). For example, gnulib
5210 # may need to determine whether LIB_CLOCK_GETTIME should contain -lrt,
5211 # and it therefore needs to run in an environment where LIBS does not
5212 # already contain -lrt merely because 'pkg-config --libs' printed '-lrt'
5213 # for some package unrelated to lib-src.
5216 CFLAGS=$pre_PKG_CONFIG_CFLAGS
5217 LIBS="$LIB_PTHREAD $pre_PKG_CONFIG_LIBS"
5218 gl_ASSERT_NO_GNULIB_POSIXCHECK
5219 gl_ASSERT_NO_GNULIB_TESTS
5224 if test "${opsys}" = "mingw32"; then
5225 CPPFLAGS="$CPPFLAGS -DUSE_CRT_DLL=1 -I \${abs_top_srcdir}/nt/inc"
5226 # Remove unneeded switches from the value of CC that goes to Makefiles
5227 CC=`AS_ECHO(["$CC"]) | sed -e "s,$GCC_TEST_OPTIONS,,"`
5231 aix4-2) LD_SWITCH_SYSTEM_TEMACS="-Wl,-bnodelcsect" ;;
5233 cygwin) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000" ;;
5236 ## The -headerpad option tells ld (see man page) to leave room at the
5237 ## end of the header for adding load commands. Needed for dumping.
5238 ## 0x1000 is enough for roughly 52 load commands on the x86_64
5239 ## architecture (where they are 78 bytes each). The actual number of
5240 ## load commands added is not consistent but normally ranges from
5241 ## about 14 to about 34. Setting it high gets us plenty of slop and
5242 ## only costs about 1.5K of wasted binary space.
5243 headerpad_extra=1000
5244 if test "$HAVE_NS" = "yes"; then
5245 libs_nsgui="-framework AppKit"
5246 if test "$NS_IMPL_COCOA" = "yes"; then
5247 libs_nsgui="$libs_nsgui -framework IOKit"
5252 LD_SWITCH_SYSTEM_TEMACS="-fno-pie -prebind $libs_nsgui -Xlinker -headerpad -Xlinker $headerpad_extra"
5254 ## This is here because src/Makefile.in did some extra fiddling around
5255 ## with LD_SWITCH_SYSTEM. It seems cleaner to put this in
5256 ## LD_SWITCH_SYSTEM_TEMACS instead,
5257 test "x$LD_SWITCH_SYSTEM" = "x" && test "x$GCC" != "xyes" && \
5258 LD_SWITCH_SYSTEM_TEMACS="-X $LD_SWITCH_SYSTEM_TEMACS"
5261 ## LD_SWITCH_X_SITE_RPATH is a -rpath option saying where to
5262 ## find X at run-time.
5263 ## When handled by cpp, this was in LD_SWITCH_SYSTEM. However, at the
5264 ## point where configure sourced the s/*.h file, LD_SWITCH_X_SITE_RPATH
5265 ## had not yet been defined and was expanded to null. Hence LD_SWITCH_SYSTEM
5266 ## had different values in configure (in ac_link) and src/Makefile.in.
5267 ## It seems clearer therefore to put this piece in LD_SWITCH_SYSTEM_TEMACS.
5268 gnu*) LD_SWITCH_SYSTEM_TEMACS="\$(LD_SWITCH_X_SITE_RPATH)" ;;
5271 ## Is it any better under MinGW64 to relocate emacs into higher addresses?
5272 case "$canonical" in
5273 x86_64-*-*) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x400000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5274 *) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x01000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5278 *) LD_SWITCH_SYSTEM_TEMACS= ;;
5281 # -no-pie or -nopie fixes a temacs segfault on Gentoo, OpenBSD,
5282 # Ubuntu, and other systems with "hardened" GCC configurations for
5283 # some reason (Bug#18784). We don't know why this works, but not
5284 # segfaulting is better than segfaulting. Use ac_c_werror_flag=yes
5285 # when trying the option, otherwise clang keeps warning that it does
5286 # not understand it, and pre-4.6 GCC has a similar problem
5287 # (Bug#20338). Prefer -no-pie to -nopie, as -no-pie is the
5288 # spelling used by GCC 6.1.0 and later (Bug#24682).
5290 [for $CC option to disable position independent executables],
5291 [emacs_cv_prog_cc_no_pie],
5292 [emacs_save_c_werror_flag=$ac_c_werror_flag
5293 emacs_save_LDFLAGS=$LDFLAGS
5294 ac_c_werror_flag=yes
5295 for emacs_cv_prog_cc_no_pie in -no-pie -nopie no; do
5296 test $emacs_cv_prog_cc_no_pie = no && break
5297 LDFLAGS="$emacs_save_LDFLAGS $emacs_cv_prog_cc_no_pie"
5298 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [break])
5300 ac_c_werror_flag=$emacs_save_c_werror_flag
5301 LDFLAGS=$emacs_save_LDFLAGS])
5302 if test "$emacs_cv_prog_cc_no_pie" != no; then
5303 LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS $emacs_cv_prog_cc_no_pie"
5306 if test x$ac_enable_profiling != x ; then
5308 *freebsd | gnu-linux) ;;
5309 *) LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -pg" ;;
5313 LD_SWITCH_SYSTEM_TEMACS="$LDFLAGS_NOCOMBRELOC $LD_SWITCH_SYSTEM_TEMACS"
5315 AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
5317 ## Common for all window systems
5318 if test "$window_system" != "none"; then
5319 AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])
5320 AC_DEFINE(POLL_FOR_INPUT, 1, [Define if you poll periodically to detect C-g.])
5321 WINDOW_SYSTEM_OBJ="fontset.o fringe.o image.o"
5324 AC_SUBST(WINDOW_SYSTEM_OBJ)
5326 AH_TOP([/* GNU Emacs site configuration template file.
5328 Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2018
5329 Free Software Foundation, Inc.
5331 This file is part of GNU Emacs.
5333 GNU Emacs is free software: you can redistribute it and/or modify
5334 it under the terms of the GNU General Public License as published by
5335 the Free Software Foundation, either version 3 of the License, or (at
5336 your option) any later version.
5338 GNU Emacs is distributed in the hope that it will be useful,
5339 but WITHOUT ANY WARRANTY; without even the implied warranty of
5340 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5341 GNU General Public License for more details.
5343 You should have received a copy of the GNU General Public License
5344 along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>. */
5347 /* No code in Emacs #includes config.h twice, but some bits of code
5348 intended to work with other packages as well (like gmalloc.c)
5349 think they can include it as many times as they like. */
5350 #ifndef EMACS_CONFIG_H
5351 #define EMACS_CONFIG_H
5354 AH_BOTTOM([#include <conf_post.h>
5356 #endif /* EMACS_CONFIG_H */
5365 #### Report on what we decided to do.
5366 #### Report GTK as a toolkit, even if it doesn't use Xt.
5367 #### It makes printing result more understandable as using GTK sets
5368 #### toolkit_scroll_bars to yes by default.
5369 if test "${HAVE_GTK}" = "yes"; then
5370 USE_X_TOOLKIT="$USE_GTK_TOOLKIT"
5373 if test $USE_ACL -ne 0; then
5374 ACL_SUMMARY="yes $LIB_ACL"
5379 emacs_standard_dirs='Standard dirs'
5381 Configured for '${canonical}'.
5383 Where should the build process find the source code? ${srcdir}
5384 What compiler should emacs be built with? ${CC} ${CFLAGS}
5385 Should Emacs use the GNU version of malloc? ${GNU_MALLOC}${GNU_MALLOC_reason}
5386 Should Emacs use a relocating allocator for buffers? ${REL_ALLOC}
5387 Should Emacs use mmap(2) for buffer allocation? $use_mmap_for_buffers
5388 What window system should Emacs use? ${window_system}
5389 What toolkit should Emacs use? ${USE_X_TOOLKIT}
5390 Where do we find X Windows header files? ${x_includes:-$emacs_standard_dirs}
5391 Where do we find X Windows libraries? ${x_libraries:-$emacs_standard_dirs}"])
5394 emacs_config_features=
5395 for opt in XAW3D XPM JPEG TIFF GIF PNG RSVG CAIRO IMAGEMAGICK SOUND GPM DBUS \
5396 GCONF GSETTINGS NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT \
5397 LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS X_TOOLKIT OLDXMENU X11 NS MODULES \
5398 XWIDGETS LIBSYSTEMD JSON CANNOT_DUMP LCMS2; do
5401 CANNOT_DUMP) eval val=\${$opt} ;;
5402 NOTIFY|ACL) eval val=\${${opt}_SUMMARY} ;;
5403 TOOLKIT_SCROLL_BARS|X_TOOLKIT) eval val=\${USE_$opt} ;;
5404 *) eval val=\${HAVE_$opt} ;;
5407 xno|xnone|x) continue ;;
5412 GTK*|LUCID|MOTIF) opt=$val ;;
5417 AS_VAR_APPEND([emacs_config_features], ["$optsep$opt"])
5420 AC_DEFINE_UNQUOTED(EMACS_CONFIG_FEATURES, "${emacs_config_features}",
5421 [Summary of some of the main features enabled by configure.])
5423 AS_ECHO([" Does Emacs use -lXaw3d? ${HAVE_XAW3D}
5424 Does Emacs use -lXpm? ${HAVE_XPM}
5425 Does Emacs use -ljpeg? ${HAVE_JPEG}
5426 Does Emacs use -ltiff? ${HAVE_TIFF}
5427 Does Emacs use a gif library? ${HAVE_GIF} $LIBGIF
5428 Does Emacs use a png library? ${HAVE_PNG} $LIBPNG
5429 Does Emacs use -lrsvg-2? ${HAVE_RSVG}
5430 Does Emacs use cairo? ${HAVE_CAIRO}
5431 Does Emacs use -llcms2? ${HAVE_LCMS2}
5432 Does Emacs use imagemagick (version 6)? ${HAVE_IMAGEMAGICK}
5433 Does Emacs support sound? ${HAVE_SOUND}
5434 Does Emacs use -lgpm? ${HAVE_GPM}
5435 Does Emacs use -ldbus? ${HAVE_DBUS}
5436 Does Emacs use -lgconf? ${HAVE_GCONF}
5437 Does Emacs use GSettings? ${HAVE_GSETTINGS}
5438 Does Emacs use a file notification library? ${NOTIFY_SUMMARY}
5439 Does Emacs use access control lists? ${ACL_SUMMARY}
5440 Does Emacs use -lselinux? ${HAVE_LIBSELINUX}
5441 Does Emacs use -lgnutls? ${HAVE_GNUTLS}
5442 Does Emacs use -lxml2? ${HAVE_LIBXML2}
5443 Does Emacs use -lfreetype? ${HAVE_FREETYPE}
5444 Does Emacs use -lm17n-flt? ${HAVE_M17N_FLT}
5445 Does Emacs use -lotf? ${HAVE_LIBOTF}
5446 Does Emacs use -lxft? ${HAVE_XFT}
5447 Does Emacs use -lsystemd? ${HAVE_LIBSYSTEMD}
5448 Does Emacs use -ljansson? ${HAVE_JSON}
5449 Does Emacs directly use zlib? ${HAVE_ZLIB}
5450 Does Emacs have dynamic modules support? ${HAVE_MODULES}
5451 Does Emacs use toolkit scroll bars? ${USE_TOOLKIT_SCROLL_BARS}
5452 Does Emacs support Xwidgets (requires gtk3)? ${HAVE_XWIDGETS}
5453 Does Emacs have threading support in lisp? ${threads_enabled}
5456 if test -n "${EMACSDATA}"; then
5457 AS_ECHO([" Environment variable EMACSDATA set to: $EMACSDATA"])
5459 if test -n "${EMACSDOC}"; then
5460 AS_ECHO([" Environment variable EMACSDOC set to: $EMACSDOC"])
5465 if test "$HAVE_NS" = "yes"; then
5467 AS_ECHO(["You must run \"${MAKE-make} install\" in order to test the built application.
5468 The installed application will go to nextstep/Emacs.app and can be
5469 run or moved from there."])
5470 if test "$EN_NS_SELF_CONTAINED" = "yes"; then
5471 echo "The application will be fully self-contained."
5473 AS_ECHO(["The lisp resources for the application will be installed under ${prefix}.
5474 You may need to run \"${MAKE-make} install\" with sudo. The application will fail
5475 to run if these resources are not installed."])
5480 case $opsys,$emacs_uname_r in
5482 AC_MSG_WARN([[building Emacs on Cygwin 1.5 is not supported.]])
5487 # Remove any trailing slashes in these variables.
5489 */) prefix=`AS_DIRNAME(["$prefix."])`;;
5491 case $exec_prefix in
5492 */) exec_prefix=`AS_DIRNAME(["$exec_prefix."])`;;
5495 if test "$HAVE_NS" = "yes"; then
5496 if test "$NS_IMPL_GNUSTEP" = yes; then
5497 AC_CONFIG_FILES([nextstep/GNUstep/Emacs.base/Resources/Info-gnustep.plist:nextstep/templates/Info-gnustep.plist.in \
5498 nextstep/GNUstep/Emacs.base/Resources/Emacs.desktop:nextstep/templates/Emacs.desktop.in])
5499 ns_check_file=Resources/Info-gnustep.plist
5501 AC_CONFIG_FILES([nextstep/Cocoa/Emacs.base/Contents/Info.plist:nextstep/templates/Info.plist.in \
5502 nextstep/Cocoa/Emacs.base/Contents/Resources/English.lproj/InfoPlist.strings:nextstep/templates/InfoPlist.strings.in])
5503 ns_check_file=Contents/Info.plist
5505 AC_SUBST(ns_check_file)
5508 AC_CONFIG_FILES([Makefile lib/gnulib.mk])
5510 dnl config.status treats $srcdir specially, so I think this is ok...
5511 AC_CONFIG_FILES([$srcdir/doc/man/emacs.1])
5513 m4_define([subdir_makefiles],
5514 [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])
5515 SUBDIR_MAKEFILES="subdir_makefiles"
5516 AC_CONFIG_FILES(subdir_makefiles)
5518 dnl test/ is not present in release tarfiles.
5519 opt_makefile=test/Makefile
5521 if test -f "$srcdir/$opt_makefile.in"; then
5522 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
5523 dnl Again, it's best not to use a variable. Though you can add
5524 dnl ", [], [opt_makefile='$opt_makefile']" and it should work.
5525 AC_CONFIG_FILES([test/Makefile])
5529 dnl The admin/ directory used to be excluded from tarfiles.
5530 if test -d $srcdir/admin; then
5531 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES admin/charsets/Makefile admin/unidata/Makefile admin/grammars/Makefile"
5532 AC_CONFIG_FILES([admin/charsets/Makefile])
5533 AC_CONFIG_FILES([admin/unidata/Makefile])
5534 AC_CONFIG_FILES([admin/grammars/Makefile])
5538 SUBDIR_MAKEFILES_IN=`echo " ${SUBDIR_MAKEFILES}" | sed -e 's| | $(srcdir)/|g' -e 's|Makefile|Makefile.in|g'`
5540 AC_SUBST(SUBDIR_MAKEFILES_IN)
5542 dnl You might wonder (I did) why epaths.h is generated by running make,
5543 dnl rather than just letting configure generate it from epaths.in.
5544 dnl One reason is that the various paths are not fully expanded (see above);
5545 dnl e.g., gamedir='${localstatedir}/games/emacs'.
5546 dnl Secondly, the GNU Coding standards require that one should be able
5547 dnl to run 'make prefix=/some/where/else' and override the values set
5548 dnl by configure. This also explains the 'move-if-change' test and
5549 dnl the use of force in the 'epaths-force' rule in Makefile.in.
5550 AC_CONFIG_COMMANDS([src/epaths.h], [
5551 if test "${opsys}" = "mingw32"; then
5552 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force-w32
5554 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force
5555 fi || AC_MSG_ERROR(['src/epaths.h' could not be made.])
5556 ], [GCC="$GCC" CPPFLAGS="$CPPFLAGS" opsys="$opsys"])
5558 dnl NB we have to cheat and use the ac_... version because abs_top_srcdir
5559 dnl is not yet set, sigh. Or we could use ../$srcdir/src/.gdbinit,
5561 AC_CONFIG_COMMANDS([src/.gdbinit], [
5562 if test ! -f src/.gdbinit && test -f "$srcdir/src/.gdbinit"; then
5563 AS_ECHO(["source $ac_abs_top_srcdir/src/.gdbinit"]) > src/.gdbinit
5567 dnl Perhaps this would be better named doc-emacs-emacsver.texi?
5568 dnl See comments for etc-refcards-emacsver.tex.
5569 dnl Since we get a doc/emacs directory generated anyway, for the Makefile,
5570 dnl it is not quite the same. But we are generating in $srcdir.
5571 AC_CONFIG_COMMANDS([doc/emacs/emacsver.texi], [
5572 ${MAKE-make} -s --no-print-directory -C doc/emacs doc-emacsver || \
5573 AC_MSG_ERROR(['doc/emacs/emacsver.texi' could not be made.])
5576 dnl If we give this the more natural name, etc/refcards/emacsver.texi,
5577 dnl then a directory etc/refcards is created in the build directory,
5578 dnl which is probably harmless, but confusing (in out-of-tree builds).
5579 dnl (If we were to generate etc/refcards/Makefile, this might change.)
5580 dnl It is really $srcdir/etc/refcards/emacsver.tex that we generate.
5581 AC_CONFIG_COMMANDS([etc-refcards-emacsver.tex], [
5582 ${MAKE-make} -s MAKEFILE_NAME=do-not-make-Makefile etc-emacsver || \
5583 AC_MSG_ERROR(['etc/refcards/emacsver.tex' could not be made.])
5586 if test $AUTO_DEPEND = yes; then
5587 for dir in $AUTODEPEND_PARENTS; do
5588 AS_MKDIR_P([$dir/deps])
5594 if test ! "$with_mailutils"; then
5595 if test "$with_pop" = yes; then
5596 AC_MSG_WARN([This configuration installs a 'movemail' program
5597 that retrieves POP3 email via only insecure channels.
5598 To omit insecure POP3, you can use '$0 --without-pop'.])
5599 elif test "$with_pop" = no-by-default; then
5600 AC_MSG_WARN([This configuration installs a 'movemail' program
5601 that does not retrieve POP3 email. By default, Emacs 25 and earlier
5602 installed a 'movemail' program that retrieved POP3 email via only
5603 insecure channels, a practice that is no longer recommended but that
5604 you can continue to support by using '$0 --with-pop'.])
5609 # Don't suggest GNU Mailutils, as it hasn't been ported.
5612 emacs_fix_movemail="use '$0 --with-mailutils'"
5613 case `(movemail --version) 2>/dev/null` in
5615 *) emacs_fix_movemail="install GNU Mailutils
5616 <https://mailutils.org> and $emacs_fix_movemail";;
5618 AC_MSG_NOTICE([You might want to $emacs_fix_movemail.]);;
5622 test "$MAKE" = make || AC_MSG_NOTICE([Now you can run '$MAKE'.])