1 dnl Autoconf script for GNU Emacs
2 dnl To rebuild the 'configure' script from this, execute the command
4 dnl in the directory containing this script.
5 dnl If you changed any AC_DEFINES, also run autoheader.
7 dnl Copyright (C) 1994-1996, 1999-2017 Free Software Foundation, Inc.
9 dnl This file is part of GNU Emacs.
11 dnl GNU Emacs is free software: you can redistribute it and/or modify
12 dnl it under the terms of the GNU General Public License as published by
13 dnl the Free Software Foundation, either version 3 of the License, or
14 dnl (at your option) any later version.
16 dnl GNU Emacs is distributed in the hope that it will be useful,
17 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
18 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 dnl GNU General Public License for more details.
21 dnl You should have received a copy of the GNU General Public License
22 dnl along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
25 dnl Note this is parsed by (at least) make-dist and lisp/cedet/ede/emacs.el.
26 AC_INIT(GNU Emacs, 26.0.50, bug-gnu-emacs@gnu.org)
28 dnl Set emacs_config_options to the options of 'configure', quoted for the shell,
29 dnl and then quoted again for a C string. Separate options with spaces.
30 dnl Add some environment variables, if they were passed via the environment
31 dnl rather than on the command-line.
34 dnl This is the documented way to record the args passed to configure,
35 dnl rather than $ac_configure_args.
36 for opt in "$@" CFLAGS CPPFLAGS LDFLAGS; do
38 -n | --no-create | --no-recursion)
40 CFLAGS | CPPFLAGS | LDFLAGS)
41 eval 'test "${'$opt'+set}" = set' || continue
43 *" $opt="*) continue ;;
45 eval opt=$opt=\$$opt ;;
48 emacs_shell_specials=$IFS\''"#$&()*;<>?@<:@\\`{|~'
50 *[["$emacs_shell_specials"]]*)
53 emacs_quote_apostrophes="s/'/'\\\\''/g"
54 opt=`AS_ECHO(["$opt"]) | sed "$emacs_quote_apostrophes"` ;;
59 emacs_quote_for_c='s/[["\\]]/\\&/g; $!s/$/\\n\\/'
60 opt=`AS_ECHO(["$opt"]) | sed "$emacs_quote_for_c"` ;;
63 AS_VAR_APPEND([emacs_config_options], ["$optsep$opt"])
67 AC_CONFIG_HEADERS(src/config.h:src/config.in)
68 AC_CONFIG_SRCDIR(src/lisp.h)
69 AC_CONFIG_AUX_DIR(build-aux)
70 AC_CONFIG_MACRO_DIR(m4)
73 AC_CHECK_PROGS(XCRUN, [xcrun])
74 if test -n "$XCRUN"; then
75 if test -z "$MAKE"; then
76 dnl Call the variable MAKE_PROG, not MAKE, to avoid confusion with
77 dnl the usual MAKE variable that 'make' itself uses.
78 AC_CHECK_PROG([MAKE_PROG], [make], [yes])
79 if test -z "$MAKE_PROG"; then
82 xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
87 dnl Check for GNU Make and possibly set MAKE.
88 [emacs_check_gnu_make ()
90 emacs_makeout=`($1 --version) 2>/dev/null` &&
91 case $emacs_makeout in
92 'GNU Make '3.8[1-9]* | 'GNU Make '3.9[0-9]* | \
93 'GNU Make '3.[1-9][0-9][0-9]* | 'GNU Make '[4-9]* | 'GNU Make '[1-9][0-9]* )
94 ac_path_MAKE_found=:;;
97 AC_CACHE_CHECK([for GNU Make], [ac_cv_path_MAKE],
98 [ac_path_MAKE_found=false
99 if test -n "$MAKE"; then
100 emacs_check_gnu_make "$MAKE"
101 ac_cv_path_MAKE=$MAKE
103 emacs_tried_make=false
104 emacs_tried_gmake=false
105 emacs_tried_gnumake=false
106 AC_PATH_PROGS_FEATURE_CHECK([MAKE], [make gmake gnumake],
107 [[emacs_check_gnu_make "$ac_path_MAKE"
108 if $ac_path_MAKE_found; then
109 # Use the fully-qualified program name only if the basename
110 # would not resolve to it.
111 if eval \$emacs_tried_$ac_prog; then
112 ac_cv_path_MAKE=$ac_path_MAKE
114 ac_cv_path_MAKE=$ac_prog
117 eval emacs_tried_$ac_prog=:]])
119 $ac_path_MAKE_found || {
120 AC_MSG_ERROR([[Building Emacs requires GNU Make, at least version 3.81.
121 If you have it installed under another name, configure with 'MAKE=...'.
122 For example, run '$0 MAKE=gnu-make'.]])
124 MAKE=$ac_cv_path_MAKE
127 dnl Canonicalize the configuration name.
133 if test -z "$host_alias"; then
135 # No --host argument was given to 'configure'; therefore $host
136 # was set to a default value based on the build platform. But
137 # this default value may be wrong if we are building from a
138 # 64-bit MSYS[2] pre-configured to build 32-bit MinGW programs.
139 # Therefore, we'll try to get the right host platform from the
142 AC_MSG_CHECKING([the compiler's target])
143 if test -z "$CC"; then
148 cc_target=`$cc -v 2>&1 | sed -n 's/Target: //p'`
152 "") AC_MSG_ERROR([Impossible to obtain $cc compiler target.
153 Please explicitly provide --host.])
155 *) AC_MSG_WARN([Compiler reported non-standard target.
156 Defaulting to $host.])
159 AC_MSG_RESULT([$host])
162 . $srcdir/nt/mingw-cfg.site
166 # srcdir is an absolute path. In this case, force the format
167 # "/c/foo/bar", to simplify later conversions to native Windows
168 # format ("c:/foo/bar").
169 srcdir=`cd "${srcdir}" && pwd -W`
170 # 'eval' pacifies strict POSIX non-MinGW shells (Bug#18612).
171 eval 'srcdir="/${srcdir:0:1}${srcdir:2}"'
177 configuration=${host_alias-${build_alias-$host}}
178 emacs_uname_r=`uname -r`
180 dnl Support for --program-prefix, --program-suffix and
181 dnl --program-transform-name options
184 dnl It is important that variables on the RHS not be expanded here,
185 dnl hence the single quotes. This is per the GNU coding standards, see
186 dnl (autoconf) Installation Directory Variables
187 dnl See also epaths.h below.
188 lispdir='${datadir}/emacs/${version}/lisp'
189 standardlisppath='${lispdir}'
190 locallisppath='${datadir}/emacs/${version}/site-lisp:'\
191 '${datadir}/emacs/site-lisp'
192 lisppath='${locallisppath}:${standardlisppath}'
193 etcdir='${datadir}/emacs/${version}/etc'
194 archlibdir='${libexecdir}/emacs/${version}/${configuration}'
195 etcdocdir='${datadir}/emacs/${version}/etc'
196 gamedir='${localstatedir}/games/emacs'
198 dnl Special option to disable the most of other options.
200 [AS_HELP_STRING([--without-all],
201 [omit almost all features and build
202 small executable with minimal dependencies])],
203 [with_features=$withval],
206 dnl OPTION_DEFAULT_OFF(NAME, HELP-STRING)
207 dnl Create a new --with option that defaults to being disabled.
208 dnl NAME is the base name of the option. The shell variable with_NAME
209 dnl will be set to either the user's value (if the option is
210 dnl specified; 'yes' for a plain --with-NAME) or to 'no' (if the
211 dnl option is not specified). Note that the shell variable name is
212 dnl constructed as autoconf does, by replacing non-alphanumeric
213 dnl characters with "_".
214 dnl HELP-STRING is the help text for the option.
215 AC_DEFUN([OPTION_DEFAULT_OFF], [dnl
216 AC_ARG_WITH([$1],[AS_HELP_STRING([--with-$1],[$2])],[],[dnl
217 m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=no])dnl
220 dnl OPTION_DEFAULT_ON(NAME, HELP-STRING)
221 dnl Create a new --with option that defaults to $with_features.
222 dnl NAME is the base name of the option. The shell variable with_NAME
223 dnl will be set either to 'no' (for a plain --without-NAME) or to
224 dnl 'yes' (if the option is not specified). Note that the shell
225 dnl variable name is constructed as autoconf does, by replacing
226 dnl non-alphanumeric characters with "_".
227 dnl HELP-STRING is the help text for the option.
228 AC_DEFUN([OPTION_DEFAULT_ON], [dnl
229 AC_ARG_WITH([$1],[AS_HELP_STRING([--without-$1],[$2])],[],[dnl
230 m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=$with_features])dnl
233 # FIXME: The default options '--without-mailutils --with-pop' result
234 # in a movemail implementation that supports only unencrypted POP3
235 # connections. Encrypted connections should be the default.
237 AC_ARG_WITH([mailutils],
238 [AS_HELP_STRING([--with-mailutils],
239 [rely on GNU Mailutils, so that the --without-pop through --with-mailhost
240 options are irrelevant; this is the default if GNU Mailutils is
243 [with_mailutils=$with_features
244 if test "$with_mailutils" = yes; then
245 (movemail --version) >/dev/null 2>&1 || with_mailutils=no
247 if test "$with_mailutils" = no; then
250 AC_SUBST([with_mailutils])
252 OPTION_DEFAULT_ON([pop],
253 [don't support POP mail retrieval with movemail (--without-pop or
254 --with-mailutils is recommended, as movemail POP is insecure)])
255 if test "$with_pop" = yes; then
256 AC_DEFINE(MAIL_USE_POP)
258 AH_TEMPLATE(MAIL_USE_POP, [Define to support POP mail retrieval.])dnl
260 OPTION_DEFAULT_OFF([kerberos],[support Kerberos-authenticated POP])
261 if test "$with_kerberos" != no; then
264 AH_TEMPLATE(KERBEROS,
265 [Define to support Kerberos-authenticated POP mail retrieval.])dnl
267 OPTION_DEFAULT_OFF([kerberos5],[support Kerberos version 5 authenticated POP])
268 if test "${with_kerberos5}" != no; then
269 if test "${with_kerberos}" = no; then
273 AC_DEFINE(KERBEROS5, 1, [Define to use Kerberos 5 instead of Kerberos 4.])
276 OPTION_DEFAULT_OFF([hesiod],[support Hesiod to get the POP server host])
277 dnl FIXME hesiod support may not be present, so it seems like an error
278 dnl to define, or at least use, this unconditionally.
279 if test "$with_hesiod" != no; then
280 AC_DEFINE(HESIOD, 1, [Define to support using a Hesiod database to find the POP server.])
283 OPTION_DEFAULT_OFF([mail-unlink],[unlink, rather than empty, mail spool after reading])
284 if test "$with_mail_unlink" != no; then
285 AC_DEFINE(MAIL_UNLINK_SPOOL, 1, [Define to unlink, rather than empty, mail spool after reading.])
288 AC_ARG_WITH([mailhost],[AS_HELP_STRING([--with-mailhost=HOSTNAME],
289 [string giving default POP mail host])],
290 AC_DEFINE_UNQUOTED(MAILHOST, ["$withval"], [String giving fallback POP mail host.]))
292 AC_ARG_WITH([sound],[AS_HELP_STRING([--with-sound=VALUE],
293 [compile with sound support (VALUE one of: yes, alsa, oss, bsd-ossaudio, no;
294 default yes). Only for GNU/Linux, FreeBSD, NetBSD, MinGW, Cygwin.])],
295 [ case "${withval}" in
296 yes|no|alsa|oss|bsd-ossaudio) val=$withval ;;
297 *) AC_MSG_ERROR(['--with-sound=$withval' is invalid;
298 this option's value should be 'yes', 'no', 'alsa', 'oss', or 'bsd-ossaudio'.])
303 [with_sound=$with_features])
305 dnl FIXME currently it is not the last.
306 dnl This should be the last --with option, because --with-x is
307 dnl added later on when we find the file name of X, and it's best to
308 dnl keep them together visually.
309 AC_ARG_WITH([x-toolkit],[AS_HELP_STRING([--with-x-toolkit=KIT],
310 [use an X toolkit (KIT one of: yes or gtk, gtk2, gtk3, lucid or athena, motif, no)])],
311 [ case "${withval}" in
312 y | ye | yes ) val=gtk ;;
314 l | lu | luc | luci | lucid ) val=lucid ;;
315 a | at | ath | athe | athen | athena ) val=athena ;;
316 m | mo | mot | moti | motif ) val=motif ;;
317 g | gt | gtk ) val=gtk ;;
321 AC_MSG_ERROR(['--with-x-toolkit=$withval' is invalid;
322 this option's value should be 'yes', 'no', 'lucid', 'athena', 'motif', 'gtk',
323 'gtk2' or 'gtk3'. 'yes' and 'gtk' are synonyms.
324 'athena' and 'lucid' are synonyms.])
330 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])
331 if test "$with_wide_int" = yes; then
332 AC_DEFINE([WIDE_EMACS_INT], 1, [Use long long for EMACS_INT if available.])
335 dnl _ON results in a '--without' option in the --help output, so
336 dnl the help text should refer to "don't compile", etc.
337 with_xpm_set=${with_xpm+set}
338 OPTION_DEFAULT_ON([xpm],[don't compile with XPM image support])
339 OPTION_DEFAULT_ON([jpeg],[don't compile with JPEG image support])
340 OPTION_DEFAULT_ON([tiff],[don't compile with TIFF image support])
341 OPTION_DEFAULT_ON([gif],[don't compile with GIF image support])
342 OPTION_DEFAULT_ON([png],[don't compile with PNG image support])
343 OPTION_DEFAULT_ON([rsvg],[don't compile with SVG image support])
344 OPTION_DEFAULT_ON([libsystemd],[don't compile with libsystemd support])
345 OPTION_DEFAULT_OFF([cairo],[compile with Cairo drawing (experimental)])
346 OPTION_DEFAULT_ON([xml2],[don't compile with XML parsing support])
347 OPTION_DEFAULT_ON([imagemagick],[don't compile with ImageMagick image support])
349 OPTION_DEFAULT_ON([xft],[don't use XFT for anti aliased fonts])
350 OPTION_DEFAULT_ON([libotf],[don't use libotf for OpenType font support])
351 OPTION_DEFAULT_ON([m17n-flt],[don't use m17n-flt for text shaping])
353 OPTION_DEFAULT_ON([toolkit-scroll-bars],[don't use Motif or Xaw3d scroll bars])
354 OPTION_DEFAULT_ON([xaw3d],[don't use Xaw3d])
355 OPTION_DEFAULT_ON([xim],[don't use X11 XIM])
356 AC_ARG_WITH([ns],[AS_HELP_STRING([--with-ns],
357 [use Nextstep (macOS Cocoa or GNUstep) windowing system.
358 On by default on macOS.])],[],[with_ns=maybe])
359 OPTION_DEFAULT_OFF([w32], [use native MS Windows GUI in a Cygwin build])
361 OPTION_DEFAULT_ON([gpm],[don't use -lgpm for mouse support on a GNU/Linux console])
362 OPTION_DEFAULT_ON([dbus],[don't compile with D-Bus support])
363 AC_ARG_WITH([gconf],[AS_HELP_STRING([--with-gconf],
364 [compile with Gconf support (Gsettings replaces this)])],[],[with_gconf=maybe])
365 OPTION_DEFAULT_ON([gsettings],[don't compile with GSettings support])
366 OPTION_DEFAULT_ON([selinux],[don't compile with SELinux support])
367 OPTION_DEFAULT_ON([gnutls],[don't use -lgnutls for SSL/TLS support])
368 OPTION_DEFAULT_ON([zlib],[don't compile with zlib decompression support])
369 OPTION_DEFAULT_OFF([modules],[compile with dynamic modules support])
370 OPTION_DEFAULT_ON([threads],[don't compile with elisp threading support])
372 AC_ARG_WITH([file-notification],[AS_HELP_STRING([--with-file-notification=LIB],
373 [use a file notification library (LIB one of: yes, inotify, kqueue, gfile, w32, no)])],
374 [ case "${withval}" in
375 y | ye | yes ) val=yes ;;
377 i | in | ino | inot | inoti | inotif | inotify ) val=inotify ;;
378 k | kq | kqu | kque | kqueu | kqueue ) val=kqueue ;;
379 g | gf | gfi | gfil | gfile ) val=gfile ;;
380 w | w3 | w32 ) val=w32 ;;
381 * ) AC_MSG_ERROR(['--with-file-notification=$withval' is invalid;
382 this option's value should be 'yes', 'no', 'inotify', 'kqueue', 'gfile' or 'w32'.
383 'yes' is a synonym for 'w32' on MS-Windows, for 'no' on Nextstep,
384 otherwise for the first of 'inotify', 'kqueue' or 'gfile' that is usable.])
387 with_file_notification=$val
389 [with_file_notification=$with_features])
391 OPTION_DEFAULT_OFF([xwidgets],
392 [enable use of some gtk widgets in Emacs buffers (requires gtk3)])
394 ## For the times when you want to build Emacs but don't have
395 ## a suitable makeinfo, and can live without the manuals.
396 dnl http://lists.gnu.org/archive/html/emacs-devel/2008-04/msg01844.html
397 OPTION_DEFAULT_ON([makeinfo],[don't require makeinfo for building manuals])
399 ## Makefile.in needs the cache file name.
402 ## This is an option because I do not know if all info/man support
403 ## compressed files, nor how to test if they do so.
404 OPTION_DEFAULT_ON([compress-install],
405 [don't compress some files (.el, .info, etc.) when installing. Equivalent to:
406 make GZIP_PROG= install])
408 AC_ARG_WITH(gameuser,dnl
409 [AS_HELP_STRING([--with-gameuser=USER_OR_GROUP],
410 [user for shared game score files.
411 An argument prefixed by ':' specifies a group instead.])])
414 case ${with_gameuser} in
416 yes) gamegroup=games ;;
417 :*) gamegroup=${with_gameuser#:} ;;
418 *) gameuser=${with_gameuser} ;;
421 AC_ARG_WITH([gnustep-conf],dnl
422 [AS_HELP_STRING([--with-gnustep-conf=FILENAME],
423 [name of GNUstep configuration file to use on systems where the command
424 'gnustep-config' does not work; default $GNUSTEP_CONFIG_FILE, or
425 /etc/GNUstep/GNUstep.conf])])
426 test "X${with_gnustep_conf}" != X && test "${with_gnustep_conf}" != yes && \
427 GNUSTEP_CONFIG_FILE="${with_gnustep_conf}"
428 test "X$GNUSTEP_CONFIG_FILE" = "X" && \
429 GNUSTEP_CONFIG_FILE=/etc/GNUstep/GNUstep.conf
431 AC_ARG_ENABLE(ns-self-contained,
432 [AS_HELP_STRING([--disable-ns-self-contained],
433 [disable self contained build under NeXTstep])],
434 EN_NS_SELF_CONTAINED=$enableval,
435 EN_NS_SELF_CONTAINED=yes)
438 AC_ARG_ENABLE(locallisppath,
439 [AS_HELP_STRING([--enable-locallisppath=PATH],
440 [directories Emacs should search for lisp files specific
442 if test "${enableval}" = "no"; then
444 elif test "${enableval}" != "yes"; then
445 locallisppath=${enableval} locallisppathset=yes
448 AC_ARG_ENABLE(checking,
449 [AS_HELP_STRING([--enable-checking@<:@=LIST@:>@],
450 [enable expensive run-time checks. With LIST,
451 enable only specific categories of checks.
452 Categories are: all,yes,no.
453 Flags are: stringbytes, stringoverrun, stringfreelist,
454 xmallocoverrun, conslist, glyphs])],
455 [ac_checking_flags="${enableval}"],[])
456 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
457 for check in $ac_checking_flags
460 # these set all the flags to specific states
461 yes) ac_enable_checking=1 ;;
462 no) ac_enable_checking= ;
463 ac_gc_check_stringbytes= ;
464 ac_gc_check_string_overrun= ;
465 ac_gc_check_string_free_list= ;
466 ac_xmalloc_overrun= ;
467 ac_gc_check_cons_list= ;
469 all) ac_enable_checking=1 ;
470 ac_gc_check_stringbytes=1 ;
471 ac_gc_check_string_overrun=1 ;
472 ac_gc_check_string_free_list=1 ;
473 ac_xmalloc_overrun=1 ;
474 ac_gc_check_cons_list=1 ;
476 # these enable particular checks
477 stringbytes) ac_gc_check_stringbytes=1 ;;
478 stringoverrun) ac_gc_check_string_overrun=1 ;;
479 stringfreelist) ac_gc_check_string_free_list=1 ;;
480 xmallocoverrun) ac_xmalloc_overrun=1 ;;
481 conslist) ac_gc_check_cons_list=1 ;;
482 glyphs) ac_glyphs_debug=1 ;;
483 *) AC_MSG_ERROR(unknown check category $check) ;;
488 if test x$ac_enable_checking != x ; then
489 AC_DEFINE(ENABLE_CHECKING, 1,
490 [Define to 1 if expensive run-time data type and consistency checks are enabled.])
492 if test x$ac_gc_check_stringbytes != x ; then
493 AC_DEFINE(GC_CHECK_STRING_BYTES, 1,
494 [Define this temporarily to hunt a bug. If defined, the size of
495 strings is redundantly recorded in sdata structures so that it can
496 be compared to the sizes recorded in Lisp strings.])
498 if test x$ac_gc_check_string_overrun != x ; then
499 AC_DEFINE(GC_CHECK_STRING_OVERRUN, 1,
500 [Define this to check for short string overrun.])
502 if test x$ac_gc_check_string_free_list != x ; then
503 AC_DEFINE(GC_CHECK_STRING_FREE_LIST, 1,
504 [Define this to check the string free list.])
506 if test x$ac_xmalloc_overrun != x ; then
507 AC_DEFINE(XMALLOC_OVERRUN_CHECK, 1,
508 [Define this to check for malloc buffer overrun.])
510 if test x$ac_gc_check_cons_list != x ; then
511 AC_DEFINE(GC_CHECK_CONS_LIST, 1,
512 [Define this to check for errors in cons list.])
514 if test x$ac_glyphs_debug != x ; then
515 AC_DEFINE(GLYPH_DEBUG, 1,
516 [Define this to enable glyphs debugging code.])
519 dnl The name of this option is unfortunate. It predates, and has no
520 dnl relation to, the "sampling-based elisp profiler" added in 24.3.
521 dnl Actually, it stops it working.
522 dnl http://lists.gnu.org/archive/html/emacs-devel/2012-11/msg00393.html
523 AC_ARG_ENABLE(profiling,
524 [AS_HELP_STRING([--enable-profiling],
525 [build emacs with low-level, gprof profiling support.
526 Mainly useful for debugging Emacs itself. May not work on
527 all platforms. Stops profiler.el working.])],
528 [ac_enable_profiling="${enableval}"],[])
529 if test x$ac_enable_profiling != x ; then
530 PROFILING_CFLAGS="-DPROFILING=1 -pg"
534 AC_SUBST(PROFILING_CFLAGS)
536 AC_ARG_ENABLE(autodepend,
537 [AS_HELP_STRING([--enable-autodepend],
538 [automatically generate dependencies to .h-files.
539 Requires gcc, enabled if found.])],
540 [ac_enable_autodepend="${enableval}"],[ac_enable_autodepend=yes])
542 AC_ARG_ENABLE(gtk-deprecation-warnings,
543 [AS_HELP_STRING([--enable-gtk-deprecation-warnings],
544 [Show Gtk+/Gdk deprecation warnings for Gtk+ >= 3.0])],
545 [ac_enable_gtk_deprecation_warnings="${enableval}"],[])
548 AC_ARG_ENABLE([build-details],
549 [AS_HELP_STRING([--disable-build-details],
550 [Make the build more deterministic by omitting host
551 names, time stamps, etc. from the output.])],
552 [test "$enableval" = no && BUILD_DETAILS=--no-build-details])
553 AC_SUBST([BUILD_DETAILS])
555 dnl This used to use changequote, but, apart from 'changequote is evil'
556 dnl per the autoconf manual, we can speed up autoconf somewhat by quoting
557 dnl the great gob of text. Thus it's not processed for possible expansion.
558 dnl Just make sure the brackets remain balanced.
560 dnl Since Emacs can't find matching pairs of quotes, boundaries are
561 dnl indicated by comments.
565 ### If you add support for a new configuration, add code to this
566 ### switch statement to recognize your configuration name and select
567 ### the appropriate opsys.
569 ### As far as handling version numbers on operating systems is
570 ### concerned, make sure things will fail in a fixable way. If
571 ### /etc/MACHINES doesn't say anything about version numbers, be
572 ### prepared to handle anything reasonably. If version numbers
573 ### matter, be sure /etc/MACHINES says something about it.
576 case "${canonical}" in
578 ## GNU/Linux and similar ports
593 ## FreeBSD kernel + glibc based userland
604 *-*-openbsd* | *-*-mirbsd* )
608 ## Apple Darwin / macOS
610 case "${canonical}" in
611 *-apple-darwin[0-9].*) unported=yes ;;
612 i[3456]86-* | x86_64-* ) ;;
616 ## FIXME: Find a way to use Fink if available (Bug#11507).
619 ## Chromium Native Client
629 ## HP 9000 series 700 and 800, running HP/UX
633 hppa*-hp-hpux1[1-9]* )
635 CFLAGS="-D_INCLUDE__STDC_A1_SOURCE $CFLAGS"
639 rs6000-ibm-aix4.[23]* )
642 powerpc-ibm-aix4.[23]* )
645 rs6000-ibm-aix[56]* )
648 powerpc-ibm-aix[5-9]* | powerpc-ibm-aix[1-9][0-9]* )
654 | i[3456]86-*-solaris2* | i[3456]86-*-sunos5* \
655 | x86_64-*-solaris2* | x86_64-*-sunos5*)
656 case "${canonical}" in
658 amd64-*-*|x86_64-*-*) ;;
662 case "${canonical}" in
663 *-sunos5.[1-9][0-9]* | *-solaris2.[1-9][0-9]* )
665 emacs_check_sunpro_c=yes
667 *-sunos5.[1-5]* | *-solaris2.[1-5]* ) unported=yes ;;
668 ## Note that Emacs 23.1's NEWS said the following would be dropped.
669 *-sunos5.6* | *-solaris2.6* )
673 ## 5.7 EOL Aug 2008, 5.8 EOL Mar 2012.
674 *-sunos5.[7-9]* | *-solaris2.[7-9]* )
676 emacs_check_sunpro_c=yes
679 ## Watch out for a compiler that we know will not work.
680 case "${canonical}" in
681 *-solaris* | *-sunos5* )
682 if [ "x$CC" = x/usr/ucb/cc ]; then
683 ## /usr/ucb/cc doesn't work;
684 ## we should find some other compiler that does work.
692 ## Intel 386 machines where we don't care about the manufacturer.
694 case "${canonical}" in
695 *-darwin* ) opsys=darwin ;;
698 # MinGW overrides and adds some system headers in nt/inc.
699 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
701 *-sysv4.2uw* ) opsys=unixware ;;
702 *-sysv5uw* ) opsys=unixware ;;
703 *-sysv5OpenUNIX* ) opsys=unixware ;;
704 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
710 case "${canonical}" in
713 # MinGW overrides and adds some system headers in nt/inc.
714 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
716 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
725 ### If the code above didn't choose an operating system, just choose
726 ### an operating system based on the configuration name. You really
727 ### only want to use this when you have no idea what the right
728 ### operating system is; if you know what operating systems a machine
729 ### runs, it's cleaner to make it explicit in the case statement
731 if test x"${opsys}" = x; then
732 case "${canonical}" in
733 *-gnu* ) opsys=gnu ;;
743 if test $unported = yes; then
744 AC_MSG_ERROR([Emacs does not support '${canonical}' systems.
745 If you think it should, please send a report to ${PACKAGE_BUGREPORT}.
746 Check 'etc/MACHINES' for recognized configuration names.])
749 #### Choose a compiler.
751 dnl Don't bother to test for C89.
752 AC_DEFUN([_AC_PROG_CC_C89], [$2])
754 dnl Sets GCC=yes if using gcc.
755 AC_PROG_CC([gcc cc cl clang "$XCRUN gcc" "$XCRUN clang"])
756 if test -n "$XCRUN"; then
757 AC_CHECK_PROGS(AR, [ar "$XCRUN ar"])
758 test -n "$AR" && export AR
761 dnl Emacs needs C99 or later.
766 if test x$GCC = xyes; then
767 test "x$GCC_TEST_OPTIONS" != x && CC="$CC $GCC_TEST_OPTIONS"
770 # Avoid gnulib's tests for -lcrypto, so that there's no static dependency on it.
771 AC_DEFUN([gl_CRYPTO_CHECK])
772 # Avoid gnulib's tests for HAVE_WORKING_O_NOATIME and HAVE_WORKING_O_NOFOLLOW,
773 # as we don't use them.
774 AC_DEFUN([gl_FCNTL_O_FLAGS])
775 # Avoid gnulib's test for pthread_sigmask.
777 for func in $ac_func_list; do
778 test $func = pthread_sigmask || AS_VAR_APPEND([funcs], [" $func"])
781 # Use the system putenv even if it lacks GNU features, as we don't need them,
782 # and the gnulib replacement runs afoul of a FreeBSD 10.1 bug; see Bug#19874.
783 AC_CHECK_FUNCS_ONCE([putenv])
784 AC_DEFUN([gl_FUNC_PUTENV],
785 [test "$ac_cv_func_putenv" = yes || REPLACE_PUTENV=1])
786 # Emacs does not use the wchar or wctype-h modules.
787 AC_DEFUN([gt_TYPE_WINT_T],
788 [GNULIB_OVERRIDES_WINT_T=0
789 AC_SUBST([GNULIB_OVERRIDES_WINT_T])])
791 # Initialize gnulib right after choosing the compiler.
792 dnl Amongst other things, this sets AR and ARFLAGS.
795 if test "$ac_test_CFLAGS" != set; then
796 # It's helpful to have C macros available to GDB, so prefer -g3 to -g
797 # if -g3 works and the user does not specify CFLAGS.
798 # This test must follow gl_EARLY; otherwise AC_LINK_IFELSE complains.
801 emacs_g3_CFLAGS='-g3';;
803 emacs_g3_CFLAGS='-g3 -O2';;
807 if test -n "$emacs_g3_CFLAGS"; then
808 emacs_save_CFLAGS=$CFLAGS
809 CFLAGS=$emacs_g3_CFLAGS
810 AC_CACHE_CHECK([whether $CC accepts $emacs_g3_CFLAGS],
811 [emacs_cv_prog_cc_g3],
812 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
813 [emacs_cv_prog_cc_g3=yes],
814 [emacs_cv_prog_cc_g3=no])])
815 if test $emacs_cv_prog_cc_g3 != yes; then
816 CFLAGS=$emacs_save_CFLAGS
818 if test $opsys = mingw32; then
819 CFLAGS="$CFLAGS -gdwarf-2"
826 # No optimization flag was inferred for this non-GCC compiler.
827 # Try -O. This is needed for xlc on AIX; see Bug#14258.
828 emacs_save_CFLAGS=$CFLAGS
829 test -z "$CFLAGS" || CFLAGS="$CFLAGS "
831 AC_CACHE_CHECK([whether $CC accepts -O],
832 [emacs_cv_prog_cc_o],
833 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
834 [emacs_cv_prog_cc_o=yes],
835 [emacs_cv_prog_cc_o=no])])
836 if test $emacs_cv_prog_cc_o != yes; then
837 CFLAGS=$emacs_save_CFLAGS
842 # gl_GCC_VERSION_IFELSE([major], [minor], [run-if-found], [run-if-not-found])
843 # ---------------------------------------------------------------------------
844 # If $CPP is gcc-MAJOR.MINOR or newer, then run RUN-IF-FOUND.
845 # Otherwise, run RUN-IF-NOT-FOUND.
846 AC_DEFUN([gl_GCC_VERSION_IFELSE],
850 #if ($1) < __GNUC__ || (($1) == __GNUC__ && ($2) <= __GNUC_MINOR__)
853 # error "your version of gcc is older than $1.$2"
860 AC_ARG_ENABLE([gcc-warnings],
861 [AS_HELP_STRING([--enable-gcc-warnings@<:@=TYPE@:>@],
862 [control generation of GCC warnings. The TYPE 'yes'
863 means to fail if any warnings are issued; 'warn-only'
864 means issue warnings without failing (default for
865 developer builds); 'no' means disable warnings
866 (default for non-developer builds).])],
869 *) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
871 gl_gcc_warnings=$enableval],
872 [# By default, use 'warn-only' if it looks like the invoker of 'configure'
873 # is a developer as opposed to a builder. This is most likely true
874 # if GCC is recent enough and there is a .git directory or file;
875 # however, if there is also a .tarball-version file it is probably
876 # just a release imported into Git for patch management.
878 if test -e "$srcdir"/.git && test ! -f "$srcdir"/.tarball-version; then
879 gl_GCC_VERSION_IFELSE([5], [3], [gl_gcc_warnings=warn-only])
882 AC_ARG_ENABLE([check-lisp-object-type],
883 [AS_HELP_STRING([--enable-check-lisp-object-type],
884 [Enable compile-time checks for the Lisp_Object data type,
885 which can catch some bugs during development.
886 The default is "no" if --enable-gcc-warnings is "no".])])
887 if test "${enable_check_lisp_object_type-$gl_gcc_warnings}" != "no"; then
888 AC_DEFINE([CHECK_LISP_OBJECT_TYPE], 1,
889 [Define to enable compile-time checks for the Lisp_Object data type.])
892 # clang is unduly picky about some things.
893 AC_CACHE_CHECK([whether the compiler is clang], [emacs_cv_clang],
900 [emacs_cv_clang=yes],
901 [emacs_cv_clang=no])])
904 # When compiling with GCC, prefer -isystem to -I when including system
905 # include files, to avoid generating useless diagnostics for the files.
906 AS_IF([test $gl_gcc_warnings = no],
909 AS_IF([test "$emacs_cv_clang" = yes],
911 # Turn off some warnings if supported.
912 gl_WARN_ADD([-Wno-switch])
913 gl_WARN_ADD([-Wno-pointer-sign])
914 gl_WARN_ADD([-Wno-string-plus-int])
915 gl_WARN_ADD([-Wno-unknown-attributes])
920 # This, $nw, is the list of warnings we disable.
923 case $with_x_toolkit in
924 lucid | athena | motif)
925 # Old toolkits mishandle 'const'.
926 nw="$nw -Wwrite-strings"
929 AS_IF([test $gl_gcc_warnings = yes],
930 [WERROR_CFLAGS=-Werror])
932 nw="$nw -Wduplicated-branches" # Too many false alarms
933 nw="$nw -Wformat-overflow=2" # False alarms due to GCC bug 80776
934 nw="$nw -Wsystem-headers" # Don't let system headers trigger warnings
935 nw="$nw -Woverlength-strings" # Not a problem these days
936 nw="$nw -Wformat-nonliteral" # we do this a lot
937 nw="$nw -Wvla" # Emacs uses <vla.h>.
938 nw="$nw -Wswitch-default" # Too many warnings for now
939 nw="$nw -Wunused-const-variable=2" # lisp.h declares const objects.
940 nw="$nw -Winline" # OK to ignore 'inline'
941 nw="$nw -Wstrict-overflow" # OK to optimize assuming that
942 # signed overflow has undefined behavior
943 nw="$nw -Wsync-nand" # irrelevant here, and provokes ObjC warning
944 nw="$nw -Wunsafe-loop-optimizations" # OK to suppress unsafe optimizations
945 nw="$nw -Wbad-function-cast" # These casts are no worse than others.
947 # Emacs doesn't care about shadowing; see
948 # <http://lists.gnu.org/archive/html/emacs-diffs/2011-11/msg00265.html>.
951 # Emacs's use of alloca inhibits protecting the stack.
952 nw="$nw -Wstack-protector"
954 # Emacs's use of partly-const functions such as Fgnutls_available_p
955 # make this option problematic.
956 nw="$nw -Wsuggest-attribute=const"
958 # Emacs's use of partly-pure functions such as CHECK_TYPE make this
959 # option problematic.
960 nw="$nw -Wsuggest-attribute=pure"
962 # This part is merely for shortening the command line,
963 # since -Wall implies -Wswitch.
966 # This part is merely for shortening the command line,
967 # since -Wno-FOO needs to be added below regardless.
968 nw="$nw -Wmissing-field-initializers"
969 nw="$nw -Woverride-init"
970 nw="$nw -Wtype-limits"
971 nw="$nw -Wunused-parameter"
973 if test "$emacs_cv_clang" = yes; then
974 nw="$nw -Wcast-align"
975 nw="$nw -Wdouble-promotion"
976 nw="$nw -Wmissing-braces"
979 # This causes too much noise in the MinGW build
980 if test $opsys = mingw32; then
981 nw="$nw -Wpointer-sign"
984 gl_MANYWARN_ALL_GCC([ws])
985 gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
989 gl_WARN_ADD([-Wredundant-decls]) # Prefer this, as we don't use Bison.
990 gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
991 gl_WARN_ADD([-Wno-override-init]) # More trouble than it is worth
992 gl_WARN_ADD([-Wno-sign-compare]) # Too many warnings for now
993 gl_WARN_ADD([-Wno-type-limits]) # Too many warnings for now
994 gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
995 gl_WARN_ADD([-Wno-format-nonliteral])
997 # clang is unduly picky about braces.
998 if test "$emacs_cv_clang" = yes; then
999 gl_WARN_ADD([-Wno-missing-braces])
1002 # This causes too much noise in the MinGW build
1003 if test $opsys = mingw32; then
1004 gl_WARN_ADD([-Wno-pointer-sign])
1007 AC_DEFINE([GCC_LINT], [1], [Define to 1 if --enable-gcc-warnings.])
1008 AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
1009 AH_VERBATIM([GNULIB_PORTCHECK_FORTIFY_SOURCE],
1010 [/* Enable compile-time and run-time bounds-checking, and some warnings,
1011 without upsetting glibc 2.15+. */
1012 #if (defined GNULIB_PORTCHECK && !defined _FORTIFY_SOURCE \
1013 && defined __OPTIMIZE__ && __OPTIMIZE__)
1014 # define _FORTIFY_SOURCE 2
1019 # clang is picky about these regardless of whether
1020 # --enable-gcc-warnings is specified.
1021 if test "$emacs_cv_clang" = yes; then
1022 gl_WARN_ADD([-Wno-initializer-overrides])
1023 gl_WARN_ADD([-Wno-tautological-compare])
1024 gl_WARN_ADD([-Wno-tautological-constant-out-of-range-compare])
1027 # Use a slightly smaller set of warning options for lib/.
1029 nw="$nw -Wunused-macros"
1030 gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
1032 AC_SUBST([WERROR_CFLAGS])
1033 AC_SUBST([GNULIB_WARN_CFLAGS])
1042 AC_ARG_ENABLE(link-time-optimization,
1043 [AS_HELP_STRING([--enable-link-time-optimization],
1044 [build emacs with link-time optimization.
1045 This requires GCC 4.5.0 or later, or clang.
1046 (Note that clang support is experimental - see INSTALL.)
1047 It also makes Emacs harder to debug, and when we tried it
1048 with GCC 4.9.0 x86-64 it made Emacs slower, so it's not
1049 recommended for typical use.])],
1050 if test "${enableval}" != "no"; then
1052 if test "$emacs_cv_clang" = yes; then
1053 AC_MSG_CHECKING([whether link-time optimization is supported by clang])
1054 GOLD_PLUGIN=`$CC -print-file-name=LLVMgold.so 2>/dev/null`
1055 if test -x "$GOLD_PLUGIN"; then
1058 elif test x$GCC = xyes; then
1059 AC_MSG_CHECKING([whether link-time optimization is supported by gcc])
1060 CPUS=`getconf _NPROCESSORS_ONLN 2>/dev/null`
1061 if test x$CPUS != x; then
1067 AC_MSG_ERROR([Link-time optimization is not supported with your compiler.])
1069 if test -z "$LTO"; then
1073 CFLAGS="$CFLAGS $LTO"
1074 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1075 [ac_lto_supported=yes], [ac_lto_supported=no])
1076 CFLAGS="$old_CFLAGS"
1078 AC_MSG_RESULT([$ac_lto_supported])
1079 if test "$ac_lto_supported" = "yes"; then
1080 CFLAGS="$CFLAGS $LTO"
1081 if test "$emacs_cv_clang" = yes; then
1082 AC_MSG_WARN([Please read INSTALL before using link-time optimization with clang])
1083 # WARNING: 'ar --plugin ...' doesn't work without
1084 # command, so plugin name is appended to ARFLAGS.
1085 ARFLAGS="cru --plugin $GOLD_PLUGIN"
1086 RANLIB="$RANLIB --plugin $GOLD_PLUGIN"
1088 dnl The following is needed for GCC 4.9.0. The GCC 4.9.0 release notes
1089 dnl suggest that instead of -ffat-lto-objects we should use gcc-ar and
1090 dnl gcc-ranlib in place of ar and ranlib, but gcc-ar makes /usr/bin/ar
1091 dnl dump core on Fedora 20, so play it safe for now.
1092 gl_COMPILER_OPTION_IF([-ffat-lto-objects],
1093 [CFLAGS="$CFLAGS -ffat-lto-objects"])
1099 dnl Automake replacements.
1100 AC_DEFUN([AM_CONDITIONAL],
1104 dnl Prefer silent make output. For verbose output, use
1105 dnl 'configure --disable-silent-rules' or 'make V=1' .
1106 dnl This code is adapted from Automake.
1107 dnl Although it can be simplified now that GNU Make is assumed,
1108 dnl the simplification hasn't been done yet.
1109 AC_ARG_ENABLE([silent-rules],
1111 [--disable-silent-rules],
1112 [verbose build output (undo: "make V=0")])])
1113 if test "$enable_silent_rules" = no; then
1114 AM_DEFAULT_VERBOSITY=1
1116 AM_DEFAULT_VERBOSITY=0
1119 AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
1121 AC_SUBST([AM_DEFAULT_V])
1122 AC_SUBST([AM_DEFAULT_VERBOSITY])
1124 dnl Some other nice autoconf tests.
1126 dnl These are commented out, since gl_EARLY and/or Autoconf already does them.
1128 dnl if test "x$RANLIB" = x; then
1133 dnl Sadly, AC_PROG_LN_S is too restrictive. It also tests whether links
1134 dnl can be made to directories. This is not relevant for our usage, and
1135 dnl excludes some cases that work fine for us. Eg MS Windows or files
1136 dnl hosted on AFS, both examples where simple links work, but links to
1137 dnl directories fail. We use a cut-down version instead.
1140 AC_MSG_CHECKING([whether ln -s works for files in the same directory])
1141 rm -f conf$$ conf$$.file
1143 LN_S_FILEONLY='cp -p'
1145 dnl On MinGW, ensure we will call the MSYS /bin/ln.exe, not some
1146 dnl random program in the current directory.
1147 if (echo >conf$$.file) 2>/dev/null; then
1148 if ln -s conf$$.file conf$$ 2>/dev/null; then
1149 if test "$opsys" = "mingw32"; then
1150 LN_S_FILEONLY='/bin/ln -s'
1152 LN_S_FILEONLY='ln -s'
1154 elif ln conf$$.file conf$$ 2>/dev/null; then
1155 if test "$opsys" = "mingw32"; then
1156 LN_S_FILEONLY=/bin/ln
1163 rm -f conf$$ conf$$.file
1165 if test "$LN_S_FILEONLY" = "ln -s"; then
1166 AC_MSG_RESULT([yes])
1168 AC_MSG_RESULT([no, using $LN_S_FILEONLY])
1171 AC_SUBST(LN_S_FILEONLY)
1174 dnl AC_PROG_LN_S sets LN_S to 'cp -pR' for MinGW, on the premise that 'ln'
1175 dnl doesn't support links to directories, as in "ln file dir". But that
1176 dnl use is non-portable, and OTOH MinGW wants to use hard links for Emacs
1177 dnl executables at "make install" time.
1178 dnl See http://lists.gnu.org/archive/html/emacs-devel/2013-04/msg00475.html
1179 dnl for more details.
1180 if test "$opsys" = "mingw32"; then
1184 dnl On some Debian versions, "install-info" prints irritating messages
1185 dnl "This is not dpkg install-info anymore, but GNU install-info"
1186 dnl if called via an absolute file name.
1187 dnl Use the entirely-identical-but-quieter ginstall-info instead if present.
1188 dnl Sadly some people may have an old ginstall-info installed on
1189 dnl non-Debian systems, so we can't use this.
1190 dnl AC_PATH_PROGS(INSTALL_INFO, [ginstall-info install-info], :,
1191 dnl $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1193 AC_PATH_PROG(INSTALL_INFO, install-info, :,
1194 $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1195 dnl Don't use GZIP, which is used by gzip for additional parameters.
1196 AC_PATH_PROG(GZIP_PROG, gzip)
1198 test $with_compress_install != yes && test -n "$GZIP_PROG" && \
1199 GZIP_PROG=" # $GZIP_PROG # (disabled by configure --without-compress-install)"
1201 AC_CACHE_CHECK([for 'find' args to delete a file],
1202 [emacs_cv_find_delete],
1203 [if touch conftest.tmp && find conftest.tmp -delete 2>/dev/null &&
1204 test ! -f conftest.tmp
1205 then emacs_cv_find_delete="-delete"
1206 else emacs_cv_find_delete="-exec rm -f {} ';'"
1208 FIND_DELETE=$emacs_cv_find_delete
1209 AC_SUBST([FIND_DELETE])
1213 if test $opsys = gnu-linux; then
1214 if test "${SETFATTR+set}" != set; then
1215 AC_CACHE_CHECK([for setfattr],
1216 [emacs_cv_prog_setfattr],
1218 if (setfattr -n user.pax.flags conftest.tmp) >/dev/null 2>&1; then
1219 emacs_cv_prog_setfattr=yes
1221 emacs_cv_prog_setfattr=no
1223 if test "$emacs_cv_prog_setfattr" = yes; then
1224 PAXCTL_notdumped='$(SETFATTR) -n user.pax.flags -v er'
1230 AC_SUBST([SETFATTR])
1233 case $opsys,$PAXCTL_notdumped,$emacs_uname_r in
1234 gnu-linux,,* | netbsd,,[0-7].*)
1235 AC_PATH_PROG([PAXCTL], [paxctl], [],
1236 [$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR/usr/sbin])
1237 if test -n "$PAXCTL"; then
1238 if test "$opsys" = netbsd; then
1239 PAXCTL_dumped='$(PAXCTL) +a'
1240 PAXCTL_notdumped=$PAXCTL_dumped
1242 AC_MSG_CHECKING([whether binaries have a PT_PAX_FLAGS header])
1243 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1244 [if $PAXCTL -v conftest$EXEEXT >/dev/null 2>&1; then
1245 AC_MSG_RESULT([yes])
1250 if test -n "$PAXCTL"; then
1251 PAXCTL_dumped='$(PAXCTL) -zex'
1252 PAXCTL_notdumped='$(PAXCTL) -r'
1257 AC_SUBST([PAXCTL_dumped])
1258 AC_SUBST([PAXCTL_notdumped])
1260 ## Require makeinfo >= 4.13 (last of the 4.x series) to build the manuals.
1261 if test "${MAKEINFO:=makeinfo}" != "no"; then
1262 case `($MAKEINFO --version) 2>/dev/null` in
1263 *' (GNU texinfo) '4.1[[3-9]]* | \
1264 *' (GNU texinfo) '[[5-9]]* | \
1265 *' (GNU texinfo) '[[1-9][0-9]]* ) ;;
1270 ## Makeinfo is unusual. For a released Emacs, the manuals are
1271 ## pre-built, and not deleted by the normal clean rules. makeinfo is
1272 ## therefore in the category of "special tools" not normally required, which
1273 ## configure does not have to check for (eg autoconf itself).
1274 ## In a repository checkout on the other hand, the manuals are not included.
1275 ## So makeinfo is a requirement to build from the repository, and configure
1276 ## should test for it as it does for any other build requirement.
1277 ## We use the presence of $srcdir/info/emacs to distinguish a release,
1278 ## with pre-built manuals, from a repository checkout.
1281 if test "$MAKEINFO" = "no"; then
1283 if test "x${with_makeinfo}" = "xno"; then
1285 elif test ! -e "$srcdir/info/emacs" && test ! -e "$srcdir/info/emacs.info"; then
1286 AC_MSG_ERROR( [You do not seem to have makeinfo >= 4.13, and your
1287 source tree does not seem to have pre-built manuals in the 'info' directory.
1288 Either install a suitable version of makeinfo, or re-run configure
1289 with the '--without-makeinfo' option to build without the manuals.] )
1292 AC_SUBST([MAKEINFO])
1293 AC_SUBST(HAVE_MAKEINFO)
1295 if test $opsys = mingw32; then
1296 DOCMISC_W32=efaq-w32
1300 AC_SUBST(DOCMISC_W32)
1302 dnl Add our options to ac_link now, after it is set up.
1304 if test x$GCC = xyes; then
1305 test "x$GCC_LINK_TEST_OPTIONS" != x && \
1306 ac_link="$ac_link $GCC_LINK_TEST_OPTIONS"
1308 test "x$NON_GCC_LINK_TEST_OPTIONS" != x && \
1309 ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
1312 dnl We need -znocombreloc if we're using a relatively recent GNU ld.
1313 dnl If we can link with the flag, it shouldn't do any harm anyhow.
1314 dnl Treat GCC specially since it just gives a non-fatal 'unrecognized option'
1315 dnl if not built to support GNU ld.
1317 dnl For a long time, -znocombreloc was added to LDFLAGS rather than
1318 dnl LD_SWITCH_SYSTEM_TEMACS. That is:
1319 dnl * inappropriate, as LDFLAGS is a user option but this is essential.
1320 dnl Eg "make LDFLAGS=... all" could run into problems,
1321 dnl http://bugs.debian.org/684788
1322 dnl * unnecessary, since temacs is the only thing that actually needs it.
1323 dnl Indeed this is where it was originally, prior to:
1324 dnl http://lists.gnu.org/archive/html/emacs-pretest-bug/2004-03/msg00170.html
1325 late_LDFLAGS="$LDFLAGS"
1326 if test x$GCC = xyes; then
1327 LDFLAGS_NOCOMBRELOC="-Wl,-znocombreloc"
1329 LDFLAGS_NOCOMBRELOC="-znocombreloc"
1332 LDFLAGS="$LDFLAGS $LDFLAGS_NOCOMBRELOC"
1334 AC_MSG_CHECKING([for -znocombreloc])
1335 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1336 [AC_MSG_RESULT(yes)],
1337 LDFLAGS_NOCOMBRELOC=
1338 [AC_MSG_RESULT(no)])
1340 LDFLAGS="$late_LDFLAGS"
1342 AC_CACHE_CHECK([whether addresses are sanitized],
1343 [emacs_cv_sanitize_address],
1346 [[#ifndef __has_feature
1347 #define __has_feature(f) 0
1349 #if defined __SANITIZE_ADDRESS__ || __has_feature (address_sanitizer)
1351 error "Addresses are not sanitized.";
1354 [emacs_cv_sanitize_address=yes],
1355 [emacs_cv_sanitize_address=no])])
1357 dnl The function dump-emacs will not be defined and temacs will do
1358 dnl (load "loadup") automatically unless told otherwise.
1359 test "x$CANNOT_DUMP" = "x" && CANNOT_DUMP=no
1361 nacl) CANNOT_DUMP=yes ;;
1364 if test "$CANNOT_DUMP" = "yes"; then
1365 AC_DEFINE(CANNOT_DUMP, 1, [Define if Emacs cannot be dumped on your system.])
1366 elif test "$emacs_cv_sanitize_address" = yes; then
1367 AC_MSG_WARN([[Addresses are sanitized; suggest CANNOT_DUMP=yes]])
1370 AC_SUBST(CANNOT_DUMP)
1373 UNEXEC_OBJ=unexelf.o
1375 # MSDOS uses unexcoff.o
1377 UNEXEC_OBJ=unexaix.o
1383 UNEXEC_OBJ=unexmacosx.o
1386 UNEXEC_OBJ=unexhp9k800.o
1389 UNEXEC_OBJ=unexw32.o
1392 # Use the Solaris dldump() function, called from unexsol.c, to dump
1393 # emacs, instead of the generic ELF dump code found in unexelf.c.
1394 # The resulting binary has a complete symbol table, and is better
1395 # for debugging and other observability tools (debuggers, pstack, etc).
1397 # If you encounter a problem using dldump(), please consider sending
1398 # a message to the OpenSolaris tools-linking mailing list:
1399 # http://mail.opensolaris.org/mailman/listinfo/tools-linking
1401 # It is likely that dldump() works with older Solaris too, but this has
1402 # not been tested, so for now this change is for Solaris 10 or newer.
1403 UNEXEC_OBJ=unexsol.o
1406 test "$CANNOT_DUMP" = "yes" && UNEXEC_OBJ=
1411 ## Let 'ld' find image libs and similar things in /usr/local/lib.
1412 ## The system compiler, GCC, has apparently been modified to not
1413 ## look there, contrary to what a stock GCC would do.
1414 ### It's not our place to do this. See bug#10313#17.
1415 ### LD_SWITCH_SYSTEM=-L/usr/local/lib
1420 ## cpp test was "ifdef __mips__", but presumably this is equivalent...
1421 case $host_cpu in mips*) LD_SWITCH_SYSTEM="-G 0";; esac
1425 ### It's not our place to do this. See bug#10313#17.
1426 ### LD_SWITCH_SYSTEM="-Wl,-rpath,/usr/pkg/lib -L/usr/pkg/lib -Wl,-rpath,/usr/local/lib -L/usr/local/lib"
1431 ## Han Boetes <han@boetes.org> says this is necessary,
1432 ## otherwise Emacs dumps core on elf systems.
1433 LD_SWITCH_SYSTEM="-Z"
1436 AC_SUBST(LD_SWITCH_SYSTEM)
1438 ac_link="$ac_link $LD_SWITCH_SYSTEM"
1440 ## This setting of LD_SWITCH_SYSTEM references LD_SWITCH_X_SITE_RPATH,
1441 ## which has not been defined yet. When this was handled with cpp,
1442 ## it was expanded to null when configure sourced the s/*.h file.
1443 ## Thus LD_SWITCH_SYSTEM had different values in configure and the Makefiles.
1444 ## FIXME it would be cleaner to put this in LD_SWITCH_SYSTEM_TEMACS
1445 ## (or somesuch), but because it is supposed to go at the _front_
1446 ## of LD_SWITCH_SYSTEM, we cannot do that in exactly the same way.
1447 ## Compare with the gnu-linux case below, which added to the end
1448 ## of LD_SWITCH_SYSTEM, and so can instead go at the front of
1449 ## LD_SWITCH_SYSTEM_TEMACS.
1452 LD_SWITCH_SYSTEM="\$(LD_SWITCH_X_SITE_RPATH) $LD_SWITCH_SYSTEM" ;;
1459 AC_CHECK_DECL([__ELF__])
1460 if test "$ac_cv_have_decl___ELF__" = "yes"; then
1461 ## With ELF, make sure that all common symbols get allocated to in the
1462 ## data section. Otherwise, the dump of temacs may miss variables in
1463 ## the shared library that have been initialized. For example, with
1464 ## GNU libc, __malloc_initialized would normally be resolved to the
1465 ## shared library's .bss section, which is fatal.
1466 if test "x$GCC" = "xyes"; then
1467 C_SWITCH_MACHINE="-fno-common"
1469 AC_MSG_ERROR([Non-GCC compilers are not supported.])
1472 dnl This was the unexalpha.c case. Removed in 24.1, 2010-07-24,
1473 dnl albeit under the mistaken assumption that said file
1474 dnl was no longer used.
1475 AC_MSG_ERROR([Non-ELF systems are not supported since Emacs 24.1.])
1479 AC_SUBST(C_SWITCH_MACHINE)
1481 AC_SUBST(UNEXEC_OBJ)
1484 ## Some programs in src produce warnings saying certain subprograms
1485 ## are too complex and need a MAXMEM value greater than 2000 for
1486 ## additional optimization. --nils@exp-math.uni-essen.de
1487 test "$opsys" = "aix4.2" && test "x$GCC" != "xyes" && \
1488 C_SWITCH_SYSTEM="-ma -qmaxmem=4000"
1489 if test "$opsys" = "mingw32"; then
1490 case "$canonical" in
1491 x86_64-*-mingw*) C_SWITCH_SYSTEM="-mtune=generic" ;;
1492 *) C_SWITCH_SYSTEM="-mtune=pentium4" ;;
1495 ## gnu-linux might need -D_BSD_SOURCE on old libc5 systems.
1496 ## It is redundant in glibc2, since we define _GNU_SOURCE.
1497 AC_SUBST(C_SWITCH_SYSTEM)
1502 ## IBM's X11R5 uses -lIM and -liconv in AIX 3.2.2.
1503 aix4-2) LIBS_SYSTEM="-lrts -lIM -liconv" ;;
1505 freebsd|dragonfly) LIBS_SYSTEM="-lutil" ;;
1507 hpux*) LIBS_SYSTEM="-l:libdld.sl" ;;
1509 sol2*) LIBS_SYSTEM="-lsocket -lnsl" ;;
1511 ## Motif needs -lgen.
1512 unixware) LIBS_SYSTEM="-lsocket -lnsl -lelf -lgen" ;;
1515 AC_SUBST(LIBS_SYSTEM)
1517 ### Make sure subsequent tests use flags consistent with the build flags.
1519 if test x"${OVERRIDE_CPPFLAGS}" != x; then
1520 CPPFLAGS="${OVERRIDE_CPPFLAGS}"
1522 CPPFLAGS="$C_SWITCH_SYSTEM $C_SWITCH_MACHINE $CPPFLAGS"
1525 # Suppress obsolescent Autoconf test for size_t; Emacs assumes C99 or better.
1526 AC_DEFUN([AC_TYPE_SIZE_T])
1527 # Likewise for obsolescent test for uid_t, gid_t; Emacs assumes them.
1528 AC_DEFUN([AC_TYPE_UID_T])
1530 # sqrt and other floating-point functions such as fmod and frexp
1531 # are found in -lm on many systems.
1533 AC_SEARCH_LIBS([sqrt], [m])
1534 if test "X$LIBS" = "X$OLD_LIBS"; then
1537 LIB_MATH=$ac_cv_search_sqrt
1541 dnl Current possibilities handled by sed (aix4-2 -> aix,
1542 dnl gnu-linux -> gnu/linux, etc.):
1543 dnl gnu, gnu/linux, gnu/kfreebsd, aix, cygwin, darwin, hpux.
1544 dnl And special cases: berkeley-unix, usg-unix-v, ms-dos, windows-nt.
1545 SYSTEM_TYPE=`echo $opsys | sed -e 's/[[0-9]].*//' -e 's|-|/|'`
1552 ## Adding -lm confuses the dynamic linker, so omit it.
1555 freebsd | dragonfly )
1556 SYSTEM_TYPE=berkeley-unix
1558 gnu-linux | gnu-kfreebsd )
1560 hpux10-20 | hpux11 )
1564 SYSTEM_TYPE=windows-nt
1566 dnl NB this may be adjusted below.
1568 SYSTEM_TYPE=berkeley-unix
1572 SYSTEM_TYPE=usg-unix-v
1578 AC_DEFINE_UNQUOTED(SYSTEM_TYPE, "$SYSTEM_TYPE",
1579 [The type of system you are compiling for; sets 'system-type'.])
1580 AC_SUBST([SYSTEM_TYPE])
1583 pre_PKG_CONFIG_CFLAGS=$CFLAGS
1584 pre_PKG_CONFIG_LIBS=$LIBS
1586 PKG_PROG_PKG_CONFIG(0.9.0)
1588 dnl EMACS_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4)
1589 dnl acts like PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4,
1590 dnl HAVE_GSTUFF=yes, HAVE_GSTUFF=no) -- see pkg-config man page --
1591 dnl except that it postprocesses CFLAGS as needed for --enable-gcc-warnings.
1592 dnl EMACS_CHECK_MODULES accepts optional 3rd and 4th arguments that
1593 dnl can take the place of the default HAVE_GSTUFF=yes and HAVE_GSTUFF=no
1595 AC_DEFUN([EMACS_CHECK_MODULES],
1596 [PKG_CHECK_MODULES([$1], [$2],
1597 [$1_CFLAGS=`AS_ECHO(["$$1_CFLAGS"]) | sed -e "$edit_cflags"`
1598 m4_default([$3], [HAVE_$1=yes])],
1599 [m4_default([$4], [HAVE_$1=no])])])
1602 if test "${with_sound}" != "no"; then
1603 # Sound support for GNU/Linux, the free BSDs, MinGW, and Cygwin.
1604 AC_CHECK_HEADERS([machine/soundcard.h sys/soundcard.h soundcard.h mmsystem.h],
1605 have_sound_header=yes, [], [
1607 #define WIN32_LEAN_AND_MEAN
1608 #include <windows.h>
1611 test "${with_sound}" = "oss" && test "${have_sound_header}" != "yes" && \
1612 AC_MSG_ERROR([OSS sound support requested but not found.])
1614 if test "${with_sound}" = "bsd-ossaudio" || test "${with_sound}" = "yes"; then
1615 # Emulation library used on NetBSD.
1616 AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
1617 test "${with_sound}" = "bsd-ossaudio" && test -z "$LIBSOUND" && \
1618 AC_MSG_ERROR([bsd-ossaudio sound support requested but not found.])
1619 dnl FIXME? If we did find ossaudio, should we set with_sound=bsd-ossaudio?
1620 dnl Traditionally, we go on to check for alsa too. Does that make sense?
1624 if test "${with_sound}" = "alsa" || test "${with_sound}" = "yes"; then
1626 ALSA_MODULES="alsa >= $ALSA_REQUIRED"
1627 EMACS_CHECK_MODULES([ALSA], [$ALSA_MODULES])
1628 if test $HAVE_ALSA = yes; then
1629 SAVE_CFLAGS="$CFLAGS"
1631 CFLAGS="$ALSA_CFLAGS $CFLAGS"
1632 LIBS="$ALSA_LIBS $LIBS"
1633 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <asoundlib.h>]], [[snd_lib_error_set_handler (0);]])],
1634 emacs_alsa_normal=yes,
1635 emacs_alsa_normal=no)
1636 if test "$emacs_alsa_normal" != yes; then
1637 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <alsa/asoundlib.h>]],
1638 [[snd_lib_error_set_handler (0);]])],
1639 emacs_alsa_subdir=yes,
1640 emacs_alsa_subdir=no)
1641 if test "$emacs_alsa_subdir" != yes; then
1642 AC_MSG_ERROR([pkg-config found alsa, but it does not compile. See config.log for error messages.])
1644 ALSA_CFLAGS="$ALSA_CFLAGS -DALSA_SUBDIR_INCLUDE"
1647 CFLAGS="$SAVE_CFLAGS"
1649 LIBSOUND="$LIBSOUND $ALSA_LIBS"
1650 CFLAGS_SOUND="$CFLAGS_SOUND $ALSA_CFLAGS"
1651 AC_DEFINE(HAVE_ALSA, 1, [Define to 1 if ALSA is available.])
1652 elif test "${with_sound}" = "alsa"; then
1653 AC_MSG_ERROR([ALSA sound support requested but not found.])
1655 fi dnl with_sound = alsa|yes
1657 dnl Define HAVE_SOUND if we have sound support. We know it works and
1658 dnl compiles only on the specified platforms. For others, it
1659 dnl probably doesn't make sense to try.
1660 dnl FIXME So surely we should bypass this whole section if not using
1661 dnl one of these platforms?
1662 if test x$have_sound_header = xyes || test $HAVE_ALSA = yes; then
1664 dnl defined __FreeBSD__ || defined __NetBSD__ || defined __linux__
1665 dnl Adjust the --with-sound help text if you change this.
1666 gnu-linux|freebsd|netbsd|mingw32|cygwin)
1667 AC_DEFINE(HAVE_SOUND, 1, [Define to 1 if you have sound support.])
1673 AC_SUBST(CFLAGS_SOUND)
1676 dnl checks for header files
1677 AC_CHECK_HEADERS_ONCE(
1684 sys/utsname.h pwd.h utmp.h util.h sys/prctl.h)
1686 AC_CACHE_CHECK([for ADDR_NO_RANDOMIZE],
1687 [emacs_cv_personality_addr_no_randomize],
1689 [AC_LANG_PROGRAM([[#include <sys/personality.h>]],
1690 [[personality (personality (0xffffffff)
1691 | ADDR_NO_RANDOMIZE)]])],
1692 [emacs_cv_personality_addr_no_randomize=yes],
1693 [emacs_cv_personality_addr_no_randomize=no])])
1694 if test $emacs_cv_personality_addr_no_randomize = yes; then
1695 AC_DEFINE([HAVE_PERSONALITY_ADDR_NO_RANDOMIZE], [1],
1696 [Define to 1 if personality flag ADDR_NO_RANDOMIZE exists.])
1699 # Note that Solaris has sys/sysinfo.h which defines struct
1700 # sysinfo as well. To make sure that we're using GNU/Linux
1701 # sysinfo, we explicitly set one of its fields.
1702 if test "$ac_cv_header_sys_sysinfo_h" = yes; then
1703 AC_MSG_CHECKING([if Linux sysinfo may be used])
1704 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1705 [[struct sysinfo si;
1708 emacs_cv_linux_sysinfo=yes, emacs_cv_linux_sysinfo=no)
1709 AC_MSG_RESULT($emacs_cv_linux_sysinfo)
1710 if test $emacs_cv_linux_sysinfo = yes; then
1711 AC_DEFINE([HAVE_LINUX_SYSINFO], 1, [Define to 1 if you have Linux sysinfo function.])
1712 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1713 [[struct sysinfo si; return si.mem_unit]])],
1714 AC_DEFINE(LINUX_SYSINFO_UNIT, 1,
1715 [Define to 1 if Linux sysinfo sizes are in multiples of mem_unit bytes.]))
1719 dnl On Solaris 8 there's a compilation warning for term.h because
1720 dnl it doesn't define 'bool'.
1721 AC_CHECK_HEADERS(term.h, , , -)
1723 AC_CHECK_DECLS([sys_siglist], [], [], [[#include <signal.h>
1725 if test $ac_cv_have_decl_sys_siglist != yes; then
1726 # For Tru64, at least:
1727 AC_CHECK_DECLS([__sys_siglist], [], [], [[#include <signal.h>
1732 AC_CHECK_HEADERS_ONCE(sys/socket.h)
1733 AC_CHECK_HEADERS(net/if.h, , , [AC_INCLUDES_DEFAULT
1734 #if HAVE_SYS_SOCKET_H
1735 #include <sys/socket.h>
1737 AC_CHECK_HEADERS(ifaddrs.h, , , [AC_INCLUDES_DEFAULT
1738 #if HAVE_SYS_SOCKET_H
1739 #include <sys/socket.h>
1741 AC_CHECK_HEADERS(net/if_dl.h, , , [AC_INCLUDES_DEFAULT
1742 #if HAVE_SYS_SOCKET_H
1743 #include <sys/socket.h>
1746 dnl checks for structure members
1747 AC_CHECK_MEMBERS([struct ifreq.ifr_flags, struct ifreq.ifr_hwaddr,
1748 struct ifreq.ifr_netmask, struct ifreq.ifr_broadaddr,
1749 struct ifreq.ifr_addr,
1750 struct ifreq.ifr_addr.sa_len], , ,
1751 [AC_INCLUDES_DEFAULT
1752 #if HAVE_SYS_SOCKET_H
1753 #include <sys/socket.h>
1759 dnl Check for endianness.
1760 dnl AC_C_BIGENDIAN is done by gnulib.
1762 dnl check for Make feature
1765 AUTODEPEND_PARENTS='lib src'
1766 dnl check if we have GCC and autodepend is on.
1767 if test "$GCC" = yes && test "$ac_enable_autodepend" = yes; then
1768 AC_MSG_CHECKING([whether gcc understands -MMD -MF])
1769 SAVE_CFLAGS="$CFLAGS"
1770 CFLAGS="$CFLAGS -MMD -MF deps.d -MP"
1771 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])], , ac_enable_autodepend=no)
1772 CFLAGS="$SAVE_CFLAGS"
1773 test -f deps.d || ac_enable_autodepend=no
1775 AC_MSG_RESULT([$ac_enable_autodepend])
1776 if test $ac_enable_autodepend = yes; then
1780 AC_SUBST(AUTO_DEPEND)
1782 dnl checks for operating system services
1783 AC_SYS_LONG_FILE_NAMES
1785 #### Choose a window system.
1787 ## We leave window_system equal to none if
1788 ## we end up building without one. Any new window system should
1789 ## set window_system to an appropriate value and add objects to
1790 ## window-system-specific substs.
1794 if test "$no_x" != yes; then
1798 LD_SWITCH_X_SITE_RPATH=
1799 if test "${x_libraries}" != NONE; then
1800 if test -n "${x_libraries}"; then
1801 LD_SWITCH_X_SITE=-L`AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -L/g'`
1802 LD_SWITCH_X_SITE_RPATH=-Wl,-rpath,`
1803 AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -Wl,-rpath,/g'
1806 x_default_search_path=""
1807 x_search_path=${x_libraries}
1808 if test -z "${x_search_path}"; then
1809 x_search_path=/usr/lib
1811 for x_library in `AS_ECHO(["$x_search_path:"]) | \
1812 sed -e "s/:/ /g" -e p -e "s:/lib[[^ /]]* :/share :g"`; do
1814 ${x_library}/X11/%L/%T/%N%C%S:\
1815 ${x_library}/X11/%l/%T/%N%C%S:\
1816 ${x_library}/X11/%T/%N%C%S:\
1817 ${x_library}/X11/%L/%T/%N%S:\
1818 ${x_library}/X11/%l/%T/%N%S:\
1819 ${x_library}/X11/%T/%N%S"
1820 if test x"${x_default_search_path}" = x; then
1821 x_default_search_path=${x_search_path}
1823 x_default_search_path="${x_search_path}:${x_default_search_path}"
1827 AC_SUBST(LD_SWITCH_X_SITE_RPATH)
1829 if test "${x_includes}" != NONE && test -n "${x_includes}"; then
1830 C_SWITCH_X_SITE=$isystem`AS_ECHO(["$x_includes"]) | sed -e "s/:/ $isystem/g"`
1833 if test x"${x_includes}" = x; then
1834 bitmapdir=/usr/include/X11/bitmaps
1836 # accumulate include directories that have X11 bitmap subdirectories
1838 for bmd in `AS_ECHO(["$x_includes"]) | sed -e 's/:/ /g'`; do
1839 if test -d "${bmd}/X11/bitmaps"; then
1840 bmd_acc="${bmd_acc}:${bmd}/X11/bitmaps"
1842 if test -d "${bmd}/bitmaps"; then
1843 bmd_acc="${bmd_acc}:${bmd}/bitmaps"
1846 bitmapdir=${bmd_acc#:}
1849 test "${with_ns}" = maybe && test "${opsys}" != darwin && with_ns=no
1851 NS_GNUSTEP_CONFIG=no
1854 tmp_CPPFLAGS="$CPPFLAGS"
1855 tmp_CFLAGS="$CFLAGS"
1856 CPPFLAGS="$CPPFLAGS -x objective-c"
1857 CFLAGS="$CFLAGS -x objective-c"
1860 if test "${with_ns}" != no; then
1861 if test "${opsys}" = darwin; then
1863 ns_appdir=`pwd`/nextstep/Emacs.app
1864 ns_appbindir=${ns_appdir}/Contents/MacOS
1865 ns_appresdir=${ns_appdir}/Contents/Resources
1866 ns_appsrc=Cocoa/Emacs.base
1867 ns_fontfile=macfont.o
1868 elif flags=$( (gnustep-config --objc-flags) 2>/dev/null); then
1870 NS_GNUSTEP_CONFIG=yes
1871 GNU_OBJC_CFLAGS=$flags
1872 LIBS_GNUSTEP=$(gnustep-config --gui-libs) || exit
1873 elif test -f $GNUSTEP_CONFIG_FILE; then
1875 dnl FIXME sourcing this several times in subshells seems inefficient.
1876 GNUSTEP_SYSTEM_HEADERS=$(
1877 . $GNUSTEP_CONFIG_FILE
1878 AS_ECHO(["$GNUSTEP_SYSTEM_HEADERS"])
1880 GNUSTEP_SYSTEM_LIBRARIES=$(
1881 . $GNUSTEP_CONFIG_FILE
1882 AS_ECHO(["$GNUSTEP_SYSTEM_LIBRARIES"])
1884 dnl I seemed to need these as well with GNUstep-startup 0.25.
1885 GNUSTEP_LOCAL_HEADERS=$(
1886 . $GNUSTEP_CONFIG_FILE
1887 AS_ECHO(["$GNUSTEP_LOCAL_HEADERS"])
1889 GNUSTEP_LOCAL_LIBRARIES=$(
1890 . $GNUSTEP_CONFIG_FILE
1891 AS_ECHO(["$GNUSTEP_LOCAL_LIBRARIES"])
1893 test "x${GNUSTEP_LOCAL_HEADERS}" != "x" && \
1894 GNUSTEP_LOCAL_HEADERS="-I${GNUSTEP_LOCAL_HEADERS}"
1895 test "x${GNUSTEP_LOCAL_LIBRARIES}" != "x" && \
1896 GNUSTEP_LOCAL_LIBRARIES="-L${GNUSTEP_LOCAL_LIBRARIES}"
1897 CPPFLAGS="$CPPFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1898 CFLAGS="$CFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1899 LDFLAGS="$LDFLAGS -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES}"
1900 LIBS_GNUSTEP="-lgnustep-gui -lgnustep-base -lobjc -lpthread"
1901 dnl GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS to 0 or 1.
1902 dnl If they had chosen to either define it or not, we could have
1903 dnl just used AC_CHECK_DECL here.
1904 AC_CACHE_CHECK(if GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS,
1905 emacs_cv_objc_exceptions,
1906 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <GNUstepBase/GSConfig.h>]],
1907 [[#if defined BASE_NATIVE_OBJC_EXCEPTIONS && BASE_NATIVE_OBJC_EXCEPTIONS > 0
1911 #endif]])], emacs_cv_objc_exceptions=yes, emacs_cv_objc_exceptions=no ) )
1912 if test $emacs_cv_objc_exceptions = yes; then
1913 dnl _NATIVE_OBJC_EXCEPTIONS is used by the GNUstep headers.
1914 AC_DEFINE(_NATIVE_OBJC_EXCEPTIONS, 1,
1915 [Define if GNUstep uses ObjC exceptions.])
1916 GNU_OBJC_CFLAGS="-fobjc-exceptions"
1919 if test $NS_IMPL_GNUSTEP = yes; then
1920 ns_appdir=`pwd`/nextstep/Emacs.app
1921 ns_appbindir=${ns_appdir}
1922 ns_appresdir=${ns_appdir}/Resources
1923 ns_appsrc=GNUstep/Emacs.base
1924 ns_fontfile=nsfont.o
1927 dnl This is only used while we test the NS headers, it gets reset below.
1928 CPPFLAGS="$CPPFLAGS $GNU_OBJC_CFLAGS"
1929 CFLAGS="$CFLAGS $GNU_OBJC_CFLAGS"
1931 AC_CHECK_HEADER([AppKit/AppKit.h], [HAVE_NS=yes],
1932 [AC_MSG_ERROR([The include files (AppKit/AppKit.h etc) that
1933 are required for a Nextstep build are missing or cannot be compiled.
1934 Either fix this, or re-configure with the option '--without-ns'.])])
1937 if test "${NS_IMPL_COCOA}" = "yes"; then
1938 AC_MSG_CHECKING([for Mac OS X 10.6 or newer])
1939 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <AppKit/AppKit.h>],
1941 #ifdef MAC_OS_X_VERSION_MAX_ALLOWED
1942 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
1945 error "Mac OS X 10.6 or newer required";
1949 ns_osx_have_106=yes,
1951 AC_MSG_RESULT([$ns_osx_have_106])
1953 if test $ns_osx_have_106 = no; then
1954 AC_MSG_ERROR([Mac OS X 10.6 or newer is required]);
1959 AC_SUBST(LIBS_GNUSTEP)
1961 INSTALL_ARCH_INDEP_EXTRA=install-etc
1962 ns_self_contained=no
1965 if test "${HAVE_NS}" = yes; then
1966 if test "$with_toolkit_scroll_bars" = "no"; then
1967 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for Nextstep.])
1970 window_system=nextstep
1971 # set up packaging dirs
1972 if test "${EN_NS_SELF_CONTAINED}" = yes; then
1973 ns_self_contained=yes
1974 prefix=${ns_appresdir}
1975 exec_prefix=${ns_appbindir}
1976 dnl This one isn't really used, only archlibdir is.
1977 libexecdir="\${ns_appbindir}/libexec"
1978 archlibdir="\${ns_appbindir}/libexec"
1979 etcdocdir="\${ns_appresdir}/etc"
1980 etcdir="\${ns_appresdir}/etc"
1981 dnl FIXME maybe set datarootdir instead.
1982 dnl That would also get applications, icons, man.
1983 infodir="\${ns_appresdir}/info"
1984 mandir="\${ns_appresdir}/man"
1985 lispdir="\${ns_appresdir}/lisp"
1986 test "$locallisppathset" = no && locallisppath=""
1987 INSTALL_ARCH_INDEP_EXTRA=
1990 NS_OBJC_OBJ="nsterm.o nsfns.o nsmenu.o nsselect.o nsimage.o $ns_fontfile"
1992 CFLAGS="$tmp_CFLAGS"
1993 CPPFLAGS="$tmp_CPPFLAGS"
1994 AC_SUBST(INSTALL_ARCH_INDEP_EXTRA)
1995 AC_SUBST(ns_self_contained)
1997 AC_SUBST(NS_OBJC_OBJ)
1999 if test "${HAVE_NS}" = yes; then
2001 [if the Objective C compiler supports instancetype],
2002 [emacs_cv_objc_instancetype],
2003 [AC_LANG_PUSH([Objective C])
2005 [AC_LANG_SOURCE([[@interface Test
2006 + (instancetype)test;
2008 emacs_cv_objc_instancetype=yes,
2009 emacs_cv_objc_instancetype=no)
2010 AC_LANG_POP([Objective C])])
2012 if test x$emacs_cv_objc_instancetype = xyes ; then
2013 AC_DEFINE(NATIVE_OBJC_INSTANCETYPE, 1,
2014 [Define if ObjC compiler supports instancetype natively.])
2026 if test "${with_w32}" != no; then
2029 AC_CHECK_HEADER([windows.h], [HAVE_W32=yes],
2030 [AC_MSG_ERROR(['--with-w32' was specified, but windows.h
2031 cannot be found.])])
2034 ## Using --with-w32 with MinGW is a no-op, but we allow it.
2037 AC_MSG_ERROR([Using w32 with an autotools build is only supported for Cygwin and MinGW32.])
2042 if test "${opsys}" = "mingw32"; then
2043 AC_MSG_CHECKING([whether Windows API headers are recent enough])
2044 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2045 #include <windows.h>
2046 #include <usp10.h>]],
2047 [[PIMAGE_NT_HEADERS pHeader;
2048 PIMAGE_SECTION_HEADER pSection = IMAGE_FIRST_SECTION(pHeader)]])],
2049 [emacs_cv_w32api=yes
2052 AC_MSG_RESULT($emacs_cv_w32api)
2053 if test "${emacs_cv_w32api}" = "no"; then
2054 AC_MSG_ERROR([the Windows API headers are too old to support this build.])
2065 if test "${HAVE_W32}" = "yes"; then
2066 AC_DEFINE(HAVE_NTGUI, 1, [Define to use native MS Windows GUI.])
2067 if test "$with_toolkit_scroll_bars" = "no"; then
2068 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for w32 build.])
2070 AC_CHECK_TOOL(WINDRES, [windres],
2071 [AC_MSG_ERROR([No resource compiler found.])])
2072 W32_OBJ="w32fns.o w32menu.o w32reg.o w32font.o w32term.o"
2073 W32_OBJ="$W32_OBJ w32xfns.o w32select.o w32uniscribe.o"
2074 EMACSRES="emacs.res"
2075 case "$canonical" in
2076 x86_64-*-*) EMACS_MANIFEST="emacs-x64.manifest" ;;
2077 *) EMACS_MANIFEST="emacs-x86.manifest" ;;
2079 dnl Construct something of the form "24,4,0,0" with 4 components.
2080 comma_version=`echo "${PACKAGE_VERSION}.0.0" | sed -e 's/\./,/g' -e 's/^\([[^,]]*,[[^,]]*,[[^,]]*,[[^,]]*\).*/\1/'`
2082 comma_space_version=`echo "$comma_version" | sed 's/,/, /g'`
2083 AC_SUBST(comma_version)
2084 AC_SUBST(comma_space_version)
2085 AC_CONFIG_FILES([nt/emacs.rc nt/emacsclient.rc])
2086 if test "${opsys}" = "cygwin"; then
2087 W32_LIBS="$W32_LIBS -lkernel32 -luser32 -lgdi32 -lole32 -lcomdlg32"
2088 W32_LIBS="$W32_LIBS -lusp10 -lcomctl32 -lwinspool"
2089 # Tell the linker that emacs.res is an object (which we compile from
2090 # the rc file), not a linker script.
2091 W32_RES_LINK="-Wl,emacs.res"
2093 W32_OBJ="$W32_OBJ w32.o w32console.o w32heap.o w32inevt.o w32proc.o"
2094 W32_LIBS="$W32_LIBS -lwinmm -lgdi32 -lcomdlg32"
2095 W32_LIBS="$W32_LIBS -lmpr -lwinspool -lole32 -lcomctl32 -lusp10"
2096 W32_RES_LINK="\$(EMACSRES)"
2097 CLIENTRES="emacsclient.res"
2098 CLIENTW="emacsclientw\$(EXEEXT)"
2099 FIRSTFILE_OBJ=firstfile.o
2102 LIBS_ECLIENT="-lcomctl32"
2103 LIB_WSOCK32="-lwsock32"
2104 NTLIB="ntlib.$ac_objext"
2105 XARGS_LIMIT="-s 10000"
2111 AC_SUBST(EMACS_MANIFEST)
2114 AC_SUBST(W32_RES_LINK)
2115 AC_SUBST(FIRSTFILE_OBJ)
2118 AC_SUBST(LIBS_ECLIENT)
2119 AC_SUBST(LIB_WSOCK32)
2121 AC_SUBST(XARGS_LIMIT)
2123 if test "${HAVE_W32}" = "yes"; then
2128 ## $window_system is now set to the window system we will
2136 case "${window_system}" in
2141 case "${with_x_toolkit}" in
2142 athena | lucid ) USE_X_TOOLKIT=LUCID ;;
2143 motif ) USE_X_TOOLKIT=MOTIF ;;
2145 term_header=gtkutil.h
2146 dnl Don't set this for GTK. A lot of tests below assumes Xt when
2147 dnl USE_X_TOOLKIT is set.
2148 USE_X_TOOLKIT=none ;;
2149 gtk2 ) with_gtk2=yes
2150 term_header=gtkutil.h
2151 USE_X_TOOLKIT=none ;;
2152 gtk3 ) with_gtk3=yes
2153 term_header=gtkutil.h
2154 USE_X_TOOLKIT=none ;;
2155 no ) USE_X_TOOLKIT=none ;;
2156 dnl If user did not say whether to use a toolkit, make this decision later:
2157 dnl use the toolkit if we have gtk, or X11R5 or newer.
2158 * ) USE_X_TOOLKIT=maybe ;;
2162 term_header=nsterm.h
2165 term_header=w32term.h
2169 if test "$window_system" = none && test "X$with_x" != "Xno"; then
2170 AC_CHECK_PROG(HAVE_XSERVER, X, true, false)
2171 if test "$HAVE_XSERVER" = true ||
2172 test -n "$DISPLAY" ||
2174 for emacs_libX11 in /usr/lib/libX11.*; do break; done
2175 test "$emacs_libX11" != '/usr/lib/libX11.*'
2178 AC_MSG_ERROR([You seem to be running X, but no X development libraries
2179 were found. You should install the relevant development files for X
2180 and for the toolkit you want, such as Gtk+ or Motif. Also make
2181 sure you have development files for image handling, i.e.
2182 tiff, gif, jpeg, png and xpm.
2183 If you are sure you want Emacs compiled without X window support, pass
2189 # Does the opsystem file prohibit the use of the GNU malloc?
2190 # Assume not, until told otherwise.
2194 [whether malloc is Doug Lea style],
2195 [emacs_cv_var_doug_lea_malloc],
2196 [emacs_cv_var_doug_lea_malloc=no
2197 dnl Hooks do not work with address sanitization.
2198 if test "$emacs_cv_sanitize_address" != yes; then
2201 [[#include <malloc.h>
2202 static void hook (void) {}]],
2203 [[malloc_set_state (malloc_get_state ());
2204 __after_morecore_hook = hook;
2205 __malloc_initialize_hook = hook;]])],
2206 [emacs_cv_var_doug_lea_malloc=yes])
2208 doug_lea_malloc=$emacs_cv_var_doug_lea_malloc
2213 test "$CANNOT_DUMP" = yes ||
2215 ## darwin ld insists on the use of malloc routines in the System framework.
2216 darwin | mingw32 | nacl | sol2-10) ;;
2217 cygwin) hybrid_malloc=yes
2219 *) test "$ac_cv_func_sbrk" = yes && system_malloc=$emacs_cv_sanitize_address;;
2222 if test "${system_malloc}" != yes && test "${doug_lea_malloc}" != yes \
2223 && test "${UNEXEC_OBJ}" = unexelf.o; then
2229 if test "${system_malloc}" = "yes"; then
2230 AC_DEFINE([SYSTEM_MALLOC], 1,
2231 [Define to 1 to use the system memory allocator, even if it is not
2235 (The GNU allocators don't work with this system configuration.)"
2237 elif test "$hybrid_malloc" = yes; then
2238 AC_DEFINE(HYBRID_MALLOC, 1,
2239 [Define to use gmalloc before dumping and the system malloc after.])
2242 GNU_MALLOC_reason=" (only before dumping)"
2243 GMALLOC_OBJ=gmalloc.o
2246 test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
2247 VMLIMIT_OBJ=vm-limit.o
2249 AC_CHECK_HEADERS([sys/vlimit.h])
2250 AC_CACHE_CHECK([for data_start], [emacs_cv_data_start],
2253 [[extern char data_start[]; char ch;]],
2254 [[return data_start < &ch;]])],
2255 [emacs_cv_data_start=yes],
2256 [emacs_cv_data_start=no])])
2257 if test $emacs_cv_data_start = yes; then
2258 AC_DEFINE([HAVE_DATA_START], 1,
2259 [Define to 1 if data_start is the address of the start
2260 of the main data segment.])
2263 AC_SUBST([HYBRID_MALLOC])
2264 AC_SUBST(GMALLOC_OBJ)
2265 AC_SUBST(VMLIMIT_OBJ)
2267 if test "$doug_lea_malloc" = "yes" && test "$hybrid_malloc" != yes; then
2268 if test "$GNU_MALLOC" = yes ; then
2270 (Using Doug Lea's new malloc from the GNU C Library.)"
2272 AC_DEFINE(DOUG_LEA_MALLOC, 1,
2273 [Define to 1 if the system memory allocator is Doug Lea style,
2274 with malloc hooks and malloc_set_state.])
2276 ## Use mmap directly for allocating larger buffers.
2277 ## FIXME this comes from src/s/{gnu,gnu-linux}.h:
2278 ## #ifdef DOUG_LEA_MALLOC; #undef REL_ALLOC; #endif
2279 ## Does the AC_FUNC_MMAP test below make this check unnecessary?
2281 mingw32|gnu*) REL_ALLOC=no ;;
2285 if test x"${REL_ALLOC}" = x; then
2286 REL_ALLOC=${GNU_MALLOC}
2289 use_mmap_for_buffers=no
2291 mingw32) use_mmap_for_buffers=yes ;;
2295 if test $use_mmap_for_buffers = yes; then
2296 AC_DEFINE(USE_MMAP_FOR_BUFFERS, 1, [Define to use mmap to allocate buffer text.])
2300 LIBS="$LIBS_SYSTEM $LIBS"
2302 dnl FIXME replace main with a function we actually want from this library.
2303 AC_CHECK_LIB(Xbsd, main, LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -lXbsd")
2305 dnl Check for the POSIX thread library.
2307 AC_CHECK_HEADERS_ONCE(pthread.h)
2308 if test "$ac_cv_header_pthread_h" && test "$opsys" != "mingw32"; then
2309 AC_CACHE_CHECK([for pthread library],
2310 [emacs_cv_pthread_lib],
2311 [emacs_cv_pthread_lib=no
2313 for emacs_pthread_lib in 'none needed' -lpthread; do
2314 case $emacs_pthread_lib in
2315 -*) LIBS="$OLD_LIBS $emacs_pthread_lib";;
2319 [[#include <pthread.h>
2321 sigset_t old_mask, new_mask;
2322 void noop (void) {}]],
2323 [[pthread_t th = pthread_self ();
2325 status += pthread_create (&th, 0, 0, 0);
2326 status += pthread_sigmask (SIG_BLOCK, &new_mask, &old_mask);
2327 status += pthread_kill (th, 0);
2328 #if ! (defined SYSTEM_MALLOC || defined HYBRID_MALLOC \
2329 || defined DOUG_LEA_MALLOC)
2330 /* Test for pthread_atfork only if gmalloc uses it,
2331 as older-style hosts like MirBSD 10 lack it. */
2332 status += pthread_atfork (noop, noop, noop);
2335 [emacs_cv_pthread_lib=$emacs_pthread_lib])
2337 if test "$emacs_cv_pthread_lib" != no; then
2341 if test "$emacs_cv_pthread_lib" != no; then
2342 AC_DEFINE([HAVE_PTHREAD], 1, [Define to 1 if you have POSIX threads.])
2343 case $emacs_cv_pthread_lib in
2344 -*) LIB_PTHREAD=$emacs_cv_pthread_lib;;
2346 ac_cv_func_pthread_sigmask=yes
2347 # Some systems optimize for single-threaded programs by default, and
2348 # need special flags to disable these optimizations. For example, the
2349 # definition of 'errno' in <errno.h>.
2352 AC_DEFINE([_REENTRANT], 1,
2353 [Define to 1 if your system requires this in multithreaded code.]);;
2355 AC_DEFINE([_THREAD_SAFE], 1,
2356 [Define to 1 if your system requires this in multithreaded code.]);;
2360 AC_SUBST([LIB_PTHREAD])
2362 AC_MSG_CHECKING([for thread support])
2364 if test "$with_threads" = yes; then
2365 if test "$emacs_cv_pthread_lib" != no; then
2366 AC_DEFINE(THREADS_ENABLED, 1,
2367 [Define to 1 if you want elisp thread support.])
2369 elif test "${opsys}" = "mingw32"; then
2370 dnl MinGW can do native Windows threads even without pthreads
2371 AC_DEFINE(THREADS_ENABLED, 1,
2372 [Define to 1 if you want elisp thread support.])
2376 AC_MSG_RESULT([$threads_enabled])
2378 dnl Check for need for bigtoc support on IBM AIX
2382 AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
2384 yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
2385 *) gdb_cv_bigtoc=-bbigtoc ;;
2388 LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
2389 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[int i;]])], [], [gdb_cv_bigtoc=])
2394 # Change CFLAGS, CPPFLAGS, and LIBS temporarily so that C_SWITCH_X_SITE
2395 # is for the tests that follow. We set them back later on.
2397 REAL_CFLAGS="$CFLAGS"
2398 REAL_CPPFLAGS="$CPPFLAGS"
2401 if test "${HAVE_X11}" = "yes"; then
2402 DEFS="$C_SWITCH_X_SITE $DEFS"
2403 LDFLAGS="$LDFLAGS $LD_SWITCH_X_SITE"
2405 CFLAGS="$C_SWITCH_X_SITE $CFLAGS"
2406 CPPFLAGS="$C_SWITCH_X_SITE $CPPFLAGS"
2408 # On Solaris, arrange for LD_RUN_PATH to point to the X libraries for tests.
2409 # This is handled by LD_SWITCH_X_SITE_RPATH during the real build,
2410 # but it's more convenient here to set LD_RUN_PATH since this
2411 # also works on hosts that don't understand LD_SWITCH_X_SITE_RPATH.
2412 if test "${x_libraries}" != NONE && test -n "${x_libraries}"; then
2413 LD_RUN_PATH=$x_libraries${LD_RUN_PATH+:}$LD_RUN_PATH
2417 if test "${opsys}" = "gnu-linux"; then
2418 AC_MSG_CHECKING(whether X on GNU/Linux needs -b to link)
2419 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2420 [[XOpenDisplay ("foo");]])],
2421 [xgnu_linux_first_failure=no],
2422 [xgnu_linux_first_failure=yes])
2423 if test "${xgnu_linux_first_failure}" = "yes"; then
2424 OLD_CPPFLAGS="$CPPFLAGS"
2426 CPPFLAGS="$CPPFLAGS -b i486-linuxaout"
2427 LIBS="$LIBS -b i486-linuxaout"
2428 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2429 [[XOpenDisplay ("foo");]])],
2430 [xgnu_linux_second_failure=no],
2431 [xgnu_linux_second_failure=yes])
2432 if test "${xgnu_linux_second_failure}" = "yes"; then
2433 # If we get the same failure with -b, there is no use adding -b.
2434 # So leave it out. This plays safe.
2437 LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -b i486-linuxaout"
2438 C_SWITCH_X_SITE="$C_SWITCH_X_SITE -b i486-linuxaout"
2441 CPPFLAGS=$OLD_CPPFLAGS
2448 # Reportedly, some broken Solaris systems have XKBlib.h but are missing
2449 # header files included from there.
2450 AC_MSG_CHECKING(for Xkb)
2451 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>
2452 #include <X11/XKBlib.h>]],
2453 [[XkbDescPtr kb = XkbGetKeyboard (0, XkbAllComponentsMask, XkbUseCoreKbd);]])],
2454 emacs_xkb=yes, emacs_xkb=no)
2455 AC_MSG_RESULT($emacs_xkb)
2456 if test $emacs_xkb = yes; then
2457 AC_DEFINE(HAVE_XKB, 1, [Define to 1 if you have the Xkb extension.])
2460 AC_CHECK_FUNCS(XrmSetDatabase XScreenResourceString \
2461 XScreenNumberOfScreen)
2464 if test "${window_system}" = "x11"; then
2465 AC_MSG_CHECKING(X11 version 6)
2466 AC_CACHE_VAL(emacs_cv_x11_version_6,
2467 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]],
2468 [[#if XlibSpecificationRelease < 6
2471 ]])], emacs_cv_x11_version_6=yes, emacs_cv_x11_version_6=no)])
2472 if test $emacs_cv_x11_version_6 = yes; then
2473 AC_MSG_RESULT(6 or newer)
2474 AC_DEFINE(HAVE_X11R6, 1,
2475 [Define to 1 if you have the X11R6 or newer version of Xlib.])
2476 AC_DEFINE(HAVE_X_I18N, 1, [Define if you have usable i18n support.])
2477 ## inoue@ainet.or.jp says Solaris has a bug related to X11R6-style
2481 *) AC_DEFINE(HAVE_X11R6_XIM, 1,
2482 [Define if you have usable X11R6-style XIM support.])
2486 AC_MSG_RESULT(before 6)
2491 ### Use -lrsvg-2 if available, unless '--with-rsvg=no' is specified.
2493 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${opsys}" = "mingw32"; then
2494 if test "${with_rsvg}" != "no"; then
2495 RSVG_REQUIRED=2.11.0
2496 RSVG_MODULE="librsvg-2.0 >= $RSVG_REQUIRED"
2498 EMACS_CHECK_MODULES([RSVG], [$RSVG_MODULE])
2499 AC_SUBST(RSVG_CFLAGS)
2502 if test $HAVE_RSVG = yes; then
2503 AC_DEFINE(HAVE_RSVG, 1, [Define to 1 if using librsvg.])
2504 CFLAGS="$CFLAGS $RSVG_CFLAGS"
2505 # Windows loads librsvg dynamically
2506 if test "${opsys}" = "mingw32"; then
2514 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${HAVE_W32}" = "yes"; then
2515 if test "${with_imagemagick}" != "no"; then
2516 ## 6.3.5 is the earliest version known to work; see Bug#17339.
2517 ## 6.8.2 makes Emacs crash; see Bug#13867.
2518 ## 7 and later have not been ported to; See Bug#25967.
2519 IMAGEMAGICK_MODULE="Wand >= 6.3.5 Wand != 6.8.2 Wand < 7"
2520 EMACS_CHECK_MODULES([IMAGEMAGICK], [$IMAGEMAGICK_MODULE])
2522 if test $HAVE_IMAGEMAGICK = yes; then
2525 CFLAGS="$CFLAGS $IMAGEMAGICK_CFLAGS"
2526 LIBS="$IMAGEMAGICK_LIBS $LIBS"
2527 AC_CHECK_FUNCS([MagickRelinquishMemory MagickExportImagePixels \
2528 MagickMergeImageLayers MagickAutoOrientImage])
2531 # Check that ImageMagick links. It does not link on Fedora 25
2532 # with './configure CC=clang', as pkg-config outputs flags like
2533 # -lomp that work for GCC but not Clang.
2534 if test "$ac_cv_func_MagickRelinquishMemory" != yes; then
2538 if test $HAVE_IMAGEMAGICK = yes; then
2539 AC_DEFINE([HAVE_IMAGEMAGICK], 1, [Define to 1 if using ImageMagick.])
2544 AC_SUBST([IMAGEMAGICK_CFLAGS])
2545 AC_SUBST([IMAGEMAGICK_LIBS])
2549 AC_CHECK_LIB(anl, getaddrinfo_a, HAVE_GETADDRINFO_A=yes)
2550 if test "${HAVE_GETADDRINFO_A}" = "yes"; then
2551 AC_DEFINE(HAVE_GETADDRINFO_A, 1,
2552 [Define to 1 if you have getaddrinfo_a for asynchronous DNS resolution.])
2553 GETADDRINFO_A_LIBS="-lanl"
2554 AC_SUBST(GETADDRINFO_A_LIBS)
2559 gtk_term_header=$term_header
2562 if test "${opsys}" != "mingw32"; then
2563 if test "${with_gtk3}" = "yes" || test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
2566 GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2568 dnl Checks for libraries.
2569 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2570 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2571 if test "$pkg_check_gtk" = "no" && test "$with_gtk3" = "yes"; then
2572 AC_MSG_ERROR($GTK_PKG_ERRORS)
2574 if test "$pkg_check_gtk" = "yes"; then
2575 AC_DEFINE(HAVE_GTK3, 1, [Define to 1 if using GTK 3 or later.])
2576 GTK_OBJ=emacsgtkfixed.o
2577 gtk_term_header=gtkutil.h
2578 USE_GTK_TOOLKIT="GTK3"
2579 if test "x$ac_enable_gtk_deprecation_warnings" = x; then
2580 AC_DEFINE([GDK_DISABLE_DEPRECATION_WARNINGS], [1],
2581 [Define to 1 to disable GTK+/GDK deprecation warnings.])
2582 AC_DEFINE([GLIB_DISABLE_DEPRECATION_WARNINGS], [1],
2583 [Define to 1 to disable Glib deprecation warnings.])
2587 gtk3_pkg_errors="$GTK_PKG_ERRORS "
2591 if test "${with_gtk2}" = "yes" || test "$check_gtk2" = "yes"; then
2594 GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2596 dnl Checks for libraries.
2597 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2598 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2599 if test "$pkg_check_gtk" = "no" &&
2600 { test "$with_gtk" = yes || test "$with_gtk2" = "yes"; }
2602 AC_MSG_ERROR($gtk3_pkg_errors$GTK_PKG_ERRORS)
2604 test "$pkg_check_gtk" = "yes" && USE_GTK_TOOLKIT="GTK2"
2611 if test x"$pkg_check_gtk" = xyes; then
2614 CFLAGS="$CFLAGS $GTK_CFLAGS"
2615 LIBS="$GTK_LIBS $LIBS"
2616 dnl Try to compile a simple GTK program.
2617 AC_MSG_CHECKING([whether GTK compiles])
2621 [[/* Check the Gtk and Glib APIs. */
2622 #include <gtk/gtk.h>
2623 #include <glib-object.h>
2625 callback (GObject *go, GParamSpec *spec, gpointer user_data)
2629 GtkSettings *gs = 0;
2630 /* Use G_CALLBACK to make sure function pointers can be cast to void *;
2631 strict C prohibits this. Use gtk_main_iteration to test that the
2632 libraries are there. */
2633 if (g_signal_handler_find (G_OBJECT (gs), G_SIGNAL_MATCH_FUNC,
2634 0, 0, 0, G_CALLBACK (callback), 0))
2635 gtk_main_iteration ();
2638 AC_MSG_RESULT([$GTK_COMPILES])
2639 if test "${GTK_COMPILES}" != "yes"; then
2641 if test "$USE_X_TOOLKIT" != "maybe"; then
2642 AC_MSG_ERROR([Gtk+ wanted, but it does not compile, see config.log. Maybe some x11-devel files missing?]);
2645 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $GTK_CFLAGS"
2647 AC_DEFINE(USE_GTK, 1, [Define to 1 if using GTK.])
2648 GTK_OBJ="gtkutil.o $GTK_OBJ"
2649 term_header=$gtk_term_header
2651 AC_MSG_WARN([[Your version of Gtk+ will have problems with
2652 closing open displays. This is no problem if you just use
2653 one display, but if you use more than one and close one of them
2655 See http://bugzilla.gnome.org/show_bug.cgi?id=85715]])
2663 if test "${HAVE_GTK}" = "yes"; then
2665 dnl GTK scrollbars resemble toolkit scrollbars a lot, so to avoid
2666 dnl a lot if #ifdef:s, say we have toolkit scrollbars.
2667 if test "$with_toolkit_scroll_bars" != no; then
2668 with_toolkit_scroll_bars=yes
2671 dnl Check if we have the old file selection dialog declared and
2672 dnl in the link library. In 2.x it may be in the library,
2673 dnl but not declared if deprecated featured has been selected out.
2674 dnl AC_CHECK_DECL checks for a macro, so check for GTK_TYPE_FILE_SELECTION.
2675 HAVE_GTK_FILE_SELECTION=no
2676 AC_CHECK_DECL(GTK_TYPE_FILE_SELECTION, HAVE_GTK_FILE_SELECTION=yes,
2677 HAVE_GTK_FILE_SELECTION=no, [AC_INCLUDES_DEFAULT
2678 #include <gtk/gtk.h>])
2679 if test "$HAVE_GTK_FILE_SELECTION" = yes; then
2680 AC_CHECK_FUNCS(gtk_file_selection_new)
2683 dnl Same as above for gtk_handle_box.
2684 HAVE_GTK_HANDLE_BOX=no
2685 AC_CHECK_DECL(GTK_TYPE_HANDLE_BOX, HAVE_GTK_HANDLE_BOX=yes,
2686 HAVE_GTK_HANDLE_BOX=no, [AC_INCLUDES_DEFAULT
2687 #include <gtk/gtk.h>])
2688 if test "$HAVE_GTK_HANDLE_BOX" = yes; then
2689 AC_CHECK_FUNCS(gtk_handle_box_new)
2692 dnl Same as above for gtk_tearoff_menu_item.
2693 HAVE_GTK_TEAROFF_MENU_ITEM=no
2694 AC_CHECK_DECL(GTK_TYPE_TEAROFF_MENU_ITEM, HAVE_GTK_TEAROFF_MENU_ITEM=yes,
2695 HAVE_GTK_TEAROFF_MENU_ITEM=no, [AC_INCLUDES_DEFAULT
2696 #include <gtk/gtk.h>])
2697 if test "$HAVE_GTK_TEAROFF_MENU_ITEM" = yes; then
2698 AC_CHECK_FUNCS(gtk_tearoff_menu_item_new)
2701 dnl Check for functions introduced in 2.14 and later.
2702 AC_CHECK_FUNCS(gtk_widget_get_window gtk_widget_set_has_window \
2703 gtk_dialog_get_action_area gtk_widget_get_sensitive \
2704 gtk_widget_get_mapped gtk_adjustment_get_page_size \
2705 gtk_orientable_set_orientation \
2706 gtk_window_set_has_resize_grip)
2708 term_header=gtkutil.h
2712 dnl Enable xwidgets if GTK3 and WebKitGTK+ are available.
2715 if test "$with_xwidgets" != "no"; then
2716 test "$USE_GTK_TOOLKIT" = "GTK3" && test "$window_system" != "none" ||
2717 AC_MSG_ERROR([xwidgets requested but gtk3 not used.])
2719 WEBKIT_REQUIRED=2.12
2720 WEBKIT_MODULES="webkit2gtk-4.0 >= $WEBKIT_REQUIRED"
2721 EMACS_CHECK_MODULES([WEBKIT], [$WEBKIT_MODULES])
2722 HAVE_XWIDGETS=$HAVE_WEBKIT
2723 test $HAVE_XWIDGETS = yes ||
2724 AC_MSG_ERROR([xwidgets requested but WebKitGTK+ not found.])
2726 XWIDGETS_OBJ=xwidget.o
2727 AC_DEFINE([HAVE_XWIDGETS], 1, [Define to 1 if you have xwidgets support.])
2729 AC_SUBST(XWIDGETS_OBJ)
2734 dnl D-Bus has been tested under GNU/Linux only. Must be adapted for
2735 dnl other platforms.
2738 if test "${with_dbus}" = "yes"; then
2739 EMACS_CHECK_MODULES([DBUS], [dbus-1 >= 1.0])
2740 if test "$HAVE_DBUS" = yes; then
2741 AC_DEFINE(HAVE_DBUS, 1, [Define to 1 if using D-Bus.])
2742 dnl dbus_watch_get_unix_fd has been introduced in D-Bus 1.1.1.
2743 dnl dbus_type_is_valid and dbus_validate_* have been introduced in
2746 LIBS="$LIBS $DBUS_LIBS"
2747 AC_CHECK_FUNCS(dbus_watch_get_unix_fd \
2748 dbus_type_is_valid \
2749 dbus_validate_bus_name \
2750 dbus_validate_path \
2751 dbus_validate_interface \
2752 dbus_validate_member)
2757 AC_SUBST(DBUS_CFLAGS)
2761 dnl GSettings has been tested under GNU/Linux only.
2763 if test "${HAVE_X11}" = "yes" && test "${with_gsettings}" = "yes"; then
2764 EMACS_CHECK_MODULES([GSETTINGS], [gio-2.0 >= 2.26])
2765 if test "$HAVE_GSETTINGS" = "yes"; then
2767 CFLAGS="$CFLAGS $GSETTINGS_CFLAGS"
2769 LIBS="$LIBS $GSETTINGS_LIBS"
2770 AC_MSG_CHECKING([whether GSettings is in gio])
2773 [[/* Check that gsettings really is present. */
2774 #include <glib-object.h>
2775 #include <gio/gio.h>
2778 GSettings *settings;
2779 GVariant *val = g_settings_get_value (settings, "");
2781 [], HAVE_GSETTINGS=no)
2782 AC_MSG_RESULT([$HAVE_GSETTINGS])
2784 if test "$HAVE_GSETTINGS" = "yes"; then
2785 AC_DEFINE(HAVE_GSETTINGS, 1, [Define to 1 if using GSettings.])
2786 SETTINGS_CFLAGS="$GSETTINGS_CFLAGS"
2787 SETTINGS_LIBS="$GSETTINGS_LIBS"
2788 test "$with_gconf" = "yes" || with_gconf=no
2795 dnl GConf has been tested under GNU/Linux only.
2796 dnl The version is really arbitrary, it is about the same age as Gtk+ 2.6.
2798 if test "${HAVE_X11}" = "yes" && test "${with_gconf}" != "no"; then
2799 EMACS_CHECK_MODULES([GCONF], [gconf-2.0 >= 2.13])
2800 if test "$HAVE_GCONF" = yes; then
2801 AC_DEFINE(HAVE_GCONF, 1, [Define to 1 if using GConf.])
2802 dnl Newer GConf doesn't link with g_objects, so this is not defined.
2803 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GCONF_CFLAGS"
2804 SETTINGS_LIBS="$SETTINGS_LIBS $GCONF_LIBS"
2808 if test "$HAVE_GSETTINGS" = "yes" || test "$HAVE_GCONF" = "yes"; then
2809 EMACS_CHECK_MODULES([GOBJECT], [gobject-2.0 >= 2.0])
2810 if test "$HAVE_GOBJECT" = "yes"; then
2811 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GOBJECT_CFLAGS"
2812 SETTINGS_LIBS="$SETTINGS_LIBS $GOBJECT_LIBS"
2814 SAVE_CFLAGS="$CFLAGS"
2816 CFLAGS="$SETTINGS_CFLAGS $CFLAGS"
2817 LIBS="$SETTINGS_LIBS $LIBS"
2818 CFLAGS="$SAVE_CFLAGS"
2821 AC_SUBST(SETTINGS_CFLAGS)
2822 AC_SUBST(SETTINGS_LIBS)
2825 dnl SELinux is available for GNU/Linux only.
2828 if test "${with_selinux}" = "yes"; then
2829 AC_CHECK_LIB([selinux], [lgetfilecon], HAVE_LIBSELINUX=yes, HAVE_LIBSELINUX=no)
2830 if test "$HAVE_LIBSELINUX" = yes; then
2831 AC_DEFINE(HAVE_LIBSELINUX, 1, [Define to 1 if using SELinux.])
2832 LIBSELINUX_LIBS=-lselinux
2835 AC_SUBST(LIBSELINUX_LIBS)
2838 if test "${with_gnutls}" = "yes" ; then
2839 EMACS_CHECK_MODULES([LIBGNUTLS], [gnutls >= 2.12.2],
2840 [HAVE_GNUTLS=yes], [HAVE_GNUTLS=no])
2841 if test "${HAVE_GNUTLS}" = "yes"; then
2842 AC_DEFINE(HAVE_GNUTLS, 1, [Define if using GnuTLS.])
2843 EMACS_CHECK_MODULES([LIBGNUTLS3], [gnutls >= 3.0.0],
2844 [AC_DEFINE(HAVE_GNUTLS3, 1, [Define if using GnuTLS v3.])], [])
2846 AC_CACHE_CHECK([for GnuTLS v3 with HMAC], [emacs_cv_gnutls3_hmac],
2849 #include <gnutls/gnutls.h>
2850 #include <gnutls/crypto.h>
2855 gnutls_hmac_hd_t handle;
2856 gnutls_hmac_deinit (handle, NULL);
2859 [emacs_cv_gnutls3_hmac=yes],
2860 [emacs_cv_gnutls3_hmac=no])])
2861 if test "$emacs_cv_gnutls3_hmac" = yes; then
2862 AC_DEFINE([HAVE_GNUTLS3_HMAC], [1],
2863 [Define if using GnuTLS v3 with HMAC support.])
2866 AC_CACHE_CHECK([for GnuTLS v3 with AEAD], [emacs_cv_gnutls3_aead],
2869 #include <gnutls/gnutls.h>
2870 #include <gnutls/crypto.h>
2875 gnutls_aead_cipher_hd_t handle;
2876 gnutls_aead_cipher_deinit (handle);
2879 [emacs_cv_gnutls3_aead=yes],
2880 [emacs_cv_gnutls3_aead=no])])
2881 if test "$emacs_cv_gnutls3_aead" = yes; then
2882 AC_DEFINE([HAVE_GNUTLS3_AEAD], [1],
2883 [Define if using GnuTLS v3 with AEAD support.])
2886 AC_CACHE_CHECK([for GnuTLS v3 with cipher], [emacs_cv_gnutls3_cipher],
2889 #include <gnutls/gnutls.h>
2890 #include <gnutls/crypto.h>
2895 gnutls_cipher_hd_t handle;
2896 gnutls_cipher_encrypt2 (handle, NULL, 0, NULL, 0);
2897 gnutls_cipher_deinit (handle);
2900 [emacs_cv_gnutls3_cipher=yes],
2901 [emacs_cv_gnutls3_cipher=no])])
2902 if test "$emacs_cv_gnutls3_cipher" = yes; then
2903 AC_DEFINE([HAVE_GNUTLS3_CIPHER], [1],
2904 [Define if using GnuTLS v3 with cipher support.])
2907 AC_CACHE_CHECK([for GnuTLS v3 with digest], [emacs_cv_gnutls3_digest],
2910 #include <gnutls/gnutls.h>
2911 #include <gnutls/crypto.h>
2916 gnutls_hash_hd_t handle;
2917 gnutls_hash_deinit (handle, NULL);
2920 [emacs_cv_gnutls3_digest=yes],
2921 [emacs_cv_gnutls3_digest=no])])
2922 if test "$emacs_cv_gnutls3_digest" = yes; then
2923 AC_DEFINE([HAVE_GNUTLS3_DIGEST], [1],
2924 [Define if using GnuTLS v3 with digest support.])
2928 # Windows loads GnuTLS dynamically
2929 if test "${opsys}" = "mingw32"; then
2934 AC_SUBST(LIBGNUTLS_LIBS)
2935 AC_SUBST(LIBGNUTLS_CFLAGS)
2938 if test "${with_libsystemd}" = "yes" ; then
2939 dnl This code has been tested with libsystemd 222 and later.
2940 dnl FIXME: Find the earliest version number for which Emacs should work,
2941 dnl and change '222' to that number.
2942 EMACS_CHECK_MODULES([LIBSYSTEMD], [libsystemd >= 222],
2943 [HAVE_LIBSYSTEMD=yes], [HAVE_LIBSYSTEMD=no])
2944 if test "${HAVE_LIBSYSTEMD}" = "yes"; then
2945 AC_DEFINE(HAVE_LIBSYSTEMD, 1, [Define if using libsystemd.])
2949 AC_SUBST(LIBSYSTEMD_LIBS)
2950 AC_SUBST(LIBSYSTEMD_CFLAGS)
2955 dnl MS Windows native file monitor is available for mingw32 only.
2956 case $with_file_notification,$opsys in
2958 AC_MSG_ERROR(['--with-file-notification=w32' was specified, but
2959 this is only supported on MS-Windows native and MinGW32 builds.
2960 Consider using gfile instead.])
2962 w32,* | yes,mingw32)
2963 AC_CHECK_HEADER(windows.h)
2964 if test "$ac_cv_header_windows_h" = yes ; then
2965 AC_DEFINE(HAVE_W32NOTIFY, 1, [Define to 1 to use w32notify.])
2966 NOTIFY_OBJ=w32notify.o
2967 NOTIFY_SUMMARY="yes (w32)"
2971 dnl inotify is available only on GNU/Linux.
2972 case $with_file_notification,$NOTIFY_OBJ in
2974 AC_CHECK_HEADER(sys/inotify.h)
2975 if test "$ac_cv_header_sys_inotify_h" = yes ; then
2976 AC_CHECK_FUNC(inotify_init1)
2977 if test "$ac_cv_func_inotify_init1" = yes; then
2978 AC_DEFINE(HAVE_INOTIFY, 1, [Define to 1 to use inotify.])
2979 NOTIFY_OBJ=inotify.o
2980 NOTIFY_SUMMARY="yes -lglibc (inotify)"
2985 dnl kqueue is available on BSD-like systems.
2986 case $with_file_notification,$NOTIFY_OBJ in
2988 EMACS_CHECK_MODULES([KQUEUE], [libkqueue])
2989 if test "$HAVE_KQUEUE" = "yes"; then
2990 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2991 CPPFLAGS="$CPPFLAGS -I/usr/include/kqueue"
2992 NOTIFY_CFLAGS=$KQUEUE_CFLAGS
2993 NOTIFY_LIBS=$KQUEUE_LIBS
2995 NOTIFY_SUMMARY="yes -lkqueue"
2997 AC_SEARCH_LIBS(kqueue, [])
2998 if test "$ac_cv_search_kqueue" != no; then
2999 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
3001 NOTIFY_SUMMARY="yes (kqueue)"
3006 dnl g_file_monitor exists since glib 2.18. G_FILE_MONITOR_EVENT_MOVED
3007 dnl has been added in glib 2.24. It has been tested under
3009 case $with_file_notification,$NOTIFY_OBJ in
3011 if test "${HAVE_NS}" = yes; then
3012 AC_MSG_ERROR(['--with-file-notification=gfile' is not supported in NextStep builds.
3013 Consider kqueue instead.])
3015 EMACS_CHECK_MODULES([GFILENOTIFY], [gio-2.0 >= 2.24])
3016 if test "$HAVE_GFILENOTIFY" = "yes"; then
3017 AC_DEFINE(HAVE_GFILENOTIFY, 1, [Define to 1 if using GFile.])
3018 NOTIFY_CFLAGS=$GFILENOTIFY_CFLAGS
3019 NOTIFY_LIBS=$GFILENOTIFY_LIBS
3020 NOTIFY_OBJ=gfilenotify.o
3021 NOTIFY_SUMMARY="yes -lgio (gfile)"
3026 case $with_file_notification,$NOTIFY_OBJ in
3027 yes,* | no,* | *,?*) ;;
3028 *) AC_MSG_ERROR([File notification '$with_file_notification' requested but requirements not found.]) ;;
3031 if test -n "$NOTIFY_OBJ"; then
3032 AC_DEFINE(USE_FILE_NOTIFY, 1, [Define to 1 if using file notifications.])
3034 AC_SUBST(NOTIFY_CFLAGS)
3035 AC_SUBST(NOTIFY_LIBS)
3036 AC_SUBST(NOTIFY_OBJ)
3038 dnl Do not put whitespace before the #include statements below.
3039 dnl Older compilers (eg sunos4 cc) choke on it.
3042 if test x"${USE_X_TOOLKIT}" = xmaybe || test x"${USE_X_TOOLKIT}" = xLUCID; then
3043 if test "$with_xaw3d" != no; then
3044 AC_CACHE_VAL(emacs_cv_xaw3d,
3045 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
3046 #include <X11/Intrinsic.h>
3047 #include <X11/Xaw3d/Simple.h>]],
3049 [AC_CHECK_LIB(Xaw3d, XawScrollbarSetThumb,
3050 emacs_cv_xaw3d=yes, emacs_cv_xaw3d=no)],
3051 emacs_cv_xaw3d=no)])
3055 if test $emacs_cv_xaw3d = yes; then
3056 AC_MSG_CHECKING(for xaw3d)
3057 AC_MSG_RESULT([yes; using Lucid toolkit])
3061 AC_DEFINE(HAVE_XAW3D, 1,
3062 [Define to 1 if you have the Xaw3d library (-lXaw3d).])
3064 AC_MSG_CHECKING(for xaw3d)
3066 AC_MSG_CHECKING(for libXaw)
3067 AC_CACHE_VAL(emacs_cv_xaw,
3068 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
3069 #include <X11/Intrinsic.h>
3070 #include <X11/Xaw/Simple.h>]],
3074 if test $emacs_cv_xaw = yes; then
3075 AC_MSG_RESULT([yes; using Lucid toolkit])
3078 elif test x"${USE_X_TOOLKIT}" = xLUCID; then
3079 AC_MSG_ERROR([Lucid toolkit requires X11/Xaw include files])
3081 AC_MSG_ERROR([No X toolkit could be found.
3082 If you are sure you want Emacs compiled without an X toolkit, pass
3084 to configure. Otherwise, install the development libraries for the toolkit
3085 that you want to use (e.g. Gtk+) and re-run configure.])
3090 X_TOOLKIT_TYPE=$USE_X_TOOLKIT
3094 if test "${USE_X_TOOLKIT}" != "none"; then
3095 AC_MSG_CHECKING(X11 toolkit version)
3096 AC_CACHE_VAL(emacs_cv_x11_toolkit_version_6,
3097 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Intrinsic.h>]],
3098 [[#if XtSpecificationRelease < 6
3101 ]])], emacs_cv_x11_toolkit_version_6=yes, emacs_cv_x11_toolkit_version_6=no)])
3102 HAVE_X11XTR6=$emacs_cv_x11_toolkit_version_6
3103 if test $emacs_cv_x11_toolkit_version_6 = yes; then
3104 AC_MSG_RESULT(6 or newer)
3105 AC_DEFINE(HAVE_X11XTR6, 1,
3106 [Define to 1 if you have the X11R6 or newer version of Xt.])
3107 LIBXTR6="-lSM -lICE"
3109 ## Use libw.a along with X11R6 Xt.
3110 unixware) LIBXTR6="$LIBXTR6 -lw" ;;
3113 AC_MSG_RESULT(before 6)
3116 dnl If using toolkit, check whether libXmu.a exists.
3117 dnl tranle@intellicorp.com says libXmu.a can need XtMalloc in libXt.a to link.
3119 if test x$HAVE_X11XTR6 = xyes; then
3120 OTHERLIBS='-lXt -lSM -lICE'
3124 AC_SEARCH_LIBS([XmuConvertStandardSelection], [Xmu], [], [], [$OTHERLIBS])
3125 if test "X$LIBS" != "X$OLDLIBS"; then
3126 LIBXMU=$ac_cv_search_XmuConvertStandardSelection
3129 dnl ac_cv_search_XmuConvertStandardSelection is also referenced below.
3135 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3136 # OpenMotif may be installed in such a way on some GNU/Linux systems.
3137 if test -d /usr/include/openmotif; then
3138 CPPFLAGS="-I/usr/include/openmotif $CPPFLAGS"
3139 emacs_cv_openmotif=yes
3140 case "$canonical" in
3141 x86_64-*-linux-gnu* | powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*)
3142 test -d /usr/lib64/openmotif && LDFLAGS="-L/usr/lib64/openmotif $LDFLAGS"
3145 test -d /usr/lib/openmotif && LDFLAGS="-L/usr/lib/openmotif $LDFLAGS"
3148 emacs_cv_openmotif=no
3150 AC_CACHE_CHECK(for (Open)Motif version 2.1, emacs_cv_motif_version_2_1,
3151 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <Xm/Xm.h>]],
3152 [[#if XmVERSION > 2 || (XmVERSION == 2 && XmREVISION >= 1)
3155 Motif version prior to 2.1.
3157 emacs_cv_motif_version_2_1=yes, emacs_cv_motif_version_2_1=no)])
3158 if test $emacs_cv_motif_version_2_1 = yes; then
3159 AC_CHECK_LIB(Xp, XpCreateContext, LIBXP=-lXp)
3160 if test x$emacs_cv_openmotif = xyes; then
3161 REAL_CPPFLAGS="-I/usr/include/openmotif $REAL_CPPFLAGS"
3164 AC_CACHE_CHECK(for LessTif where some systems put it, emacs_cv_lesstif,
3165 # We put this in CFLAGS temporarily to precede other -I options
3166 # that might be in CFLAGS temporarily.
3167 # We put this in CPPFLAGS where it precedes the other -I options.
3168 OLD_CPPFLAGS=$CPPFLAGS
3170 CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CPPFLAGS"
3171 CFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CFLAGS"
3172 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include </usr/X11R6/LessTif/Motif1.2/include/Xm/Xm.h>]],
3174 emacs_cv_lesstif=yes, emacs_cv_lesstif=no)])
3175 if test $emacs_cv_lesstif = yes; then
3176 # Make sure this -I option remains in CPPFLAGS after it is set
3177 # back to REAL_CPPFLAGS.
3178 # There is no need to change REAL_CFLAGS, because REAL_CFLAGS does not
3179 # have those other -I options anyway. Ultimately, having this
3180 # directory ultimately in CPPFLAGS will be enough.
3181 REAL_CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $REAL_CPPFLAGS"
3182 LDFLAGS="-L/usr/X11R6/LessTif/Motif1.2/lib $LDFLAGS"
3185 CPPFLAGS=$OLD_CPPFLAGS
3188 AC_CHECK_HEADER([Xm/BulletinB.h], [],
3189 [AC_MSG_ERROR([Motif toolkit requested but requirements not found.])])
3192 dnl Use toolkit scroll bars if configured for GTK or X toolkit and either
3193 dnl using Motif or Xaw3d is available, and unless
3194 dnl --with-toolkit-scroll-bars=no was specified.
3196 AH_TEMPLATE(USE_TOOLKIT_SCROLL_BARS,
3197 [Define to 1 if we should use toolkit scroll bars.])dnl
3198 USE_TOOLKIT_SCROLL_BARS=no
3199 if test "${with_toolkit_scroll_bars}" != "no"; then
3200 if test "${USE_X_TOOLKIT}" != "none"; then
3201 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3202 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3204 USE_TOOLKIT_SCROLL_BARS=yes
3205 elif test "${HAVE_XAW3D}" = "yes" || test "${USE_X_TOOLKIT}" = "LUCID"; then
3206 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3207 USE_TOOLKIT_SCROLL_BARS=yes
3209 elif test "${HAVE_GTK}" = "yes"; then
3210 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3211 USE_TOOLKIT_SCROLL_BARS=yes
3212 elif test "${HAVE_NS}" = "yes"; then
3213 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3214 USE_TOOLKIT_SCROLL_BARS=yes
3215 elif test "${HAVE_W32}" = "yes"; then
3216 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3217 USE_TOOLKIT_SCROLL_BARS=yes
3221 dnl See if XIM is available.
3222 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3223 #include <X11/Xlib.h>
3224 #include <X11/Xresource.h>]],
3225 [[XIMProc callback;]])],
3227 AC_DEFINE(HAVE_XIM, 1, [Define to 1 if XIM is available])],
3230 dnl '--with-xim' now controls only the initial value of use_xim at run time.
3232 if test "${with_xim}" != "no"; then
3233 AC_DEFINE(USE_XIM, 1,
3234 [Define to 1 if we should use XIM, if it is available.])
3238 if test "${HAVE_XIM}" != "no"; then
3240 if test "$GCC" = yes; then
3241 CFLAGS="$CFLAGS --pedantic-errors"
3243 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3244 #include <X11/Xlib.h>
3245 #include <X11/Xresource.h>]],
3251 XPointer *client_data;
3253 /* If we're not using GCC, it's probably not XFree86, and this is
3254 probably right, but we can't use something like --pedantic-errors. */
3255 extern Bool XRegisterIMInstantiateCallback(Display*, XrmDatabase, char*,
3256 char*, XIMProc, XPointer*);
3258 (void)XRegisterIMInstantiateCallback(display, db, res_name, res_class, callback,
3260 [emacs_cv_arg6_star=yes])
3261 AH_TEMPLATE(XRegisterIMInstantiateCallback_arg6,
3262 [Define to the type of the 6th arg of XRegisterIMInstantiateCallback,
3263 either XPointer or XPointer*.])dnl
3264 if test "$emacs_cv_arg6_star" = yes; then
3265 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer*])
3267 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer])
3272 ### Start of font-backend (under any platform) section.
3273 # (nothing here yet -- this is a placeholder)
3274 ### End of font-backend (under any platform) section.
3276 ### Start of font-backend (under X11) section.
3277 if test "${HAVE_X11}" = "yes"; then
3278 ## Use -lXft if available, unless '--with-xft=no'.
3280 if test "x${with_x}" = "xno"; then
3284 if test "$with_xft" != no; then
3285 EMACS_CHECK_MODULES([FONTCONFIG], [fontconfig >= 2.2.0])
3286 with_xft=$HAVE_FONTCONFIG
3289 if test "x${with_xft}" != "xno"; then
3291 EMACS_CHECK_MODULES([XFT], [xft >= 0.13.0], [], [HAVE_XFT=no])
3292 ## Because xftfont.c uses XRenderQueryExtension, we also
3293 ## need to link to -lXrender.
3295 AC_CHECK_LIB(Xrender, XRenderQueryExtension, HAVE_XRENDER=yes)
3296 if test "$HAVE_XFT" != no && test "$HAVE_XRENDER" != no; then
3297 OLD_CPPFLAGS="$CPPFLAGS"
3298 OLD_CFLAGS="$CFLAGS"
3300 CPPFLAGS="$CPPFLAGS $XFT_CFLAGS"
3301 CFLAGS="$CFLAGS $XFT_CFLAGS"
3302 XFT_LIBS="-lXrender $XFT_LIBS"
3303 LIBS="$XFT_LIBS $LIBS"
3304 AC_CHECK_HEADER(X11/Xft/Xft.h,
3305 AC_CHECK_LIB(Xft, XftFontOpen, HAVE_XFT=yes, , $XFT_LIBS) , ,
3306 [[#include <X11/X.h>]])
3308 if test "${HAVE_XFT}" = "yes"; then
3309 AC_DEFINE(HAVE_XFT, 1, [Define to 1 if you have the Xft library.])
3311 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $XFT_CFLAGS"
3312 fi # "${HAVE_XFT}" = "yes"
3313 CPPFLAGS=$OLD_CPPFLAGS
3316 fi # "$HAVE_XFT" != no
3317 fi # "x${with_xft}" != "xno"
3319 ## We used to allow building with FreeType and without Xft.
3320 ## However, the ftx font backend driver is not in good shape.
3321 if test "$HAVE_XFT" != "yes"; then
3322 dnl For the "Does Emacs use" message at the end.
3326 dnl Strict linkers fail with
3327 dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
3328 dnl if -lfreetype is not specified.
3329 dnl The following is needed to set FREETYPE_LIBS.
3330 EMACS_CHECK_MODULES([FREETYPE], [freetype2])
3332 test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(libxft requires libfreetype)
3336 if test "${HAVE_FREETYPE}" = "yes"; then
3337 AC_DEFINE(HAVE_FREETYPE, 1,
3338 [Define to 1 if using the freetype and fontconfig libraries.])
3339 if test "${with_libotf}" != "no"; then
3340 EMACS_CHECK_MODULES([LIBOTF], [libotf])
3341 if test "$HAVE_LIBOTF" = "yes"; then
3342 AC_DEFINE(HAVE_LIBOTF, 1, [Define to 1 if using libotf.])
3343 AC_CHECK_LIB(otf, OTF_get_variation_glyphs,
3344 HAVE_OTF_GET_VARIATION_GLYPHS=yes,
3345 HAVE_OTF_GET_VARIATION_GLYPHS=no)
3346 if test "${HAVE_OTF_GET_VARIATION_GLYPHS}" = "yes"; then
3347 AC_DEFINE(HAVE_OTF_GET_VARIATION_GLYPHS, 1,
3348 [Define to 1 if libotf has OTF_get_variation_glyphs.])
3352 dnl FIXME should there be an error if HAVE_FREETYPE != yes?
3353 dnl Does the new font backend require it, or can it work without it?
3357 if test "${HAVE_LIBOTF}" = yes; then
3358 if test "${with_m17n_flt}" != "no"; then
3359 EMACS_CHECK_MODULES([M17N_FLT], [m17n-flt])
3360 if test "$HAVE_M17N_FLT" = "yes"; then
3361 AC_DEFINE(HAVE_M17N_FLT, 1, [Define to 1 if using libm17n-flt.])
3372 ### End of font-backend (under X11) section.
3374 AC_SUBST(FREETYPE_CFLAGS)
3375 AC_SUBST(FREETYPE_LIBS)
3376 AC_SUBST(FONTCONFIG_CFLAGS)
3377 AC_SUBST(FONTCONFIG_LIBS)
3378 AC_SUBST(LIBOTF_CFLAGS)
3379 AC_SUBST(LIBOTF_LIBS)
3380 AC_SUBST(M17N_FLT_CFLAGS)
3381 AC_SUBST(M17N_FLT_LIBS)
3384 if test "${HAVE_X11}" = "yes"; then
3385 if test "${with_cairo}" != "no"; then
3386 CAIRO_REQUIRED=1.12.0
3387 CAIRO_MODULE="cairo >= $CAIRO_REQUIRED"
3388 EMACS_CHECK_MODULES(CAIRO, $CAIRO_MODULE)
3389 if test $HAVE_CAIRO = yes; then
3390 AC_DEFINE(USE_CAIRO, 1, [Define to 1 if using cairo.])
3392 AC_MSG_ERROR([cairo requested but not found.])
3395 CFLAGS="$CFLAGS $CAIRO_CFLAGS"
3396 LIBS="$LIBS $CAIRO_LIBS"
3397 AC_SUBST(CAIRO_CFLAGS)
3398 AC_SUBST(CAIRO_LIBS)
3402 if test "${HAVE_X11}" = "yes"; then
3403 AC_CHECK_HEADER(X11/Xlib-xcb.h,
3404 AC_CHECK_LIB(xcb, xcb_translate_coordinates, HAVE_XCB=yes))
3405 if test "${HAVE_XCB}" = "yes"; then
3406 AC_CHECK_LIB(X11-xcb, XGetXCBConnection, HAVE_X11_XCB=yes)
3407 if test "${HAVE_X11_XCB}" = "yes"; then
3408 AC_DEFINE(USE_XCB, 1,
3409 [Define to 1 if you have the XCB library and X11-XCB library for mixed
3410 X11/XCB programming.])
3411 XCB_LIBS="-lX11-xcb -lxcb"
3417 ### Use -lXpm if available, unless '--with-xpm=no'.
3418 ### mingw32 doesn't use -lXpm, since it loads the library dynamically.
3419 ### The Cygwin-w32 build uses <noX/xpm.h> instead of <X11/xpm.h>, so
3420 ### we need to set LDFLAGS accordingly.
3423 if test "${HAVE_W32}" = "yes" && test "${opsys}" = "cygwin"; then
3424 if test "${with_xpm}" != "no"; then
3425 SAVE_LDFLAGS="$LDFLAGS"
3426 LDFLAGS="$LDFLAGS -L/usr/lib/noX"
3427 AC_CHECK_HEADER(noX/xpm.h,
3428 [AC_CHECK_LIB(Xpm, XpmReadFileToImage, HAVE_XPM=yes)])
3429 if test "${HAVE_XPM}" = "yes"; then
3430 AC_MSG_CHECKING(for XpmReturnAllocPixels preprocessor define)
3431 AC_EGREP_CPP(no_return_alloc_pixels,
3432 [#include "noX/xpm.h"
3433 #ifndef XpmReturnAllocPixels
3434 no_return_alloc_pixels
3436 ], HAVE_XPM=no, HAVE_XPM=yes)
3438 if test "${HAVE_XPM}" = "yes"; then
3442 LDFLAGS="$SAVE_LDFLAGS"
3447 if test "${HAVE_XPM}" = "yes"; then
3448 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3453 if test "${HAVE_X11}" = "yes"; then
3454 dnl Avoid Xpm on AIX unless requested, as it crashes; see Bug#17598.
3455 test "$opsys$with_xpm_set" = aix4-2 && with_xpm=no
3457 if test "${with_xpm}" != "no"; then
3458 AC_CHECK_HEADER(X11/xpm.h,
3459 [AC_CHECK_LIB(Xpm, XpmReadFileToPixmap, HAVE_XPM=yes, , -lX11)])
3460 if test "${HAVE_XPM}" = "yes"; then
3461 AC_MSG_CHECKING(for XpmReturnAllocPixels preprocessor define)
3462 AC_EGREP_CPP(no_return_alloc_pixels,
3463 [#include "X11/xpm.h"
3464 #ifndef XpmReturnAllocPixels
3465 no_return_alloc_pixels
3467 ], HAVE_XPM=no, HAVE_XPM=yes)
3469 if test "${HAVE_XPM}" = "yes"; then
3477 if test "${HAVE_XPM}" = "yes"; then
3478 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3480 elif test "$opsys,$LUCID_LIBW" = aix4-2,-lXaw; then
3481 dnl AIX -lXaw needs -lXpm linked too; see Bug#17598 Message#152.
3486 ### FIXME: Perhaps regroup to minimize code duplication due to MinGW's
3487 ### slightly different requirements wrt image libraries (it doesn't
3488 ### use -lXpm because it loads the xpm shared library dynamically at
3490 if test "${opsys}" = "mingw32"; then
3491 if test "${with_xpm}" != "no"; then
3492 AC_CHECK_HEADER(X11/xpm.h, HAVE_XPM=yes, HAVE_XPM=no, [
3496 if test "${HAVE_XPM}" = "yes"; then
3497 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3503 ### Use -ljpeg if available, unless '--with-jpeg=no'.
3506 if test "${with_jpeg}" != "no"; then
3507 AC_CACHE_CHECK([for jpeglib 6b or later],
3510 for emacs_cv_jpeglib in yes -ljpeg no; do
3511 case $emacs_cv_jpeglib in
3514 *) LIBS="$LIBS $emacs_cv_jpeglib";;
3518 [[#undef HAVE_STDLIB_H /* Avoid config.h/jpeglib.h collision. */
3519 #include <stdio.h> /* jpeglib.h needs FILE and size_t. */
3520 #include <jpeglib.h>
3522 char verify[JPEG_LIB_VERSION < 62 ? -1 : 1];
3523 struct jpeg_decompress_struct cinfo;
3526 jpeg_create_decompress (&cinfo);
3527 WARNMS (&cinfo, JWRN_JPEG_EOF);
3528 jpeg_destroy_decompress (&cinfo);
3530 [emacs_link_ok=yes],
3533 test $emacs_link_ok = yes && break
3535 if test "$emacs_cv_jpeglib" != no; then
3537 AC_DEFINE([HAVE_JPEG], 1,
3538 [Define to 1 if you have the jpeg library (typically -ljpeg).])
3539 ### mingw32 doesn't use -ljpeg, since it loads the library
3540 ### dynamically when needed, and doesn't want a run-time
3541 ### dependency on the jpeglib DLL.
3542 test "$emacs_cv_jpeglib" != yes && test "${opsys}" != "mingw32" \
3543 && LIBJPEG=$emacs_cv_jpeglib
3550 if test "${with_zlib}" != "no"; then
3552 AC_SEARCH_LIBS([inflateEnd], [z], [HAVE_ZLIB=yes])
3554 case $ac_cv_search_inflateEnd in
3555 -*) LIBZ=$ac_cv_search_inflateEnd ;;
3558 if test "${HAVE_ZLIB}" = "yes"; then
3559 AC_DEFINE([HAVE_ZLIB], 1, [Define to 1 if you have the zlib library (-lz).])
3560 ### mingw32 doesn't use -lz, since it loads the library dynamically.
3561 if test "${opsys}" = "mingw32"; then
3567 ### Dynamic modules support
3572 cygwin|mingw32) MODULES_SUFFIX=".dll" ;;
3573 *) MODULES_SUFFIX=".so" ;;
3575 if test "${with_modules}" != "no"; then
3581 cygwin|mingw32|darwin)
3585 # BSD systems have dlopen in libc.
3586 AC_CHECK_FUNC([dlopen], [HAVE_MODULES=yes])
3590 if test "${HAVE_MODULES}" = no; then
3591 AC_MSG_ERROR([Dynamic modules are not supported on your system])
3594 LIBS="$LIBS $LIBMODULES"
3595 AC_CHECK_FUNCS([dladdr dlfunc])
3600 if test "${HAVE_MODULES}" = yes; then
3601 MODULES_OBJ="dynlib.o emacs-module.o"
3602 AC_DEFINE(HAVE_MODULES, 1, [Define to 1 if dynamic modules are enabled])
3603 AC_DEFINE_UNQUOTED(MODULES_SUFFIX, "$MODULES_SUFFIX",
3604 [System extension for dynamic libraries])
3606 AC_SUBST(MODULES_OBJ)
3607 AC_SUBST(LIBMODULES)
3608 AC_SUBST(HAVE_MODULES)
3609 AC_SUBST(MODULES_SUFFIX)
3611 AC_CONFIG_FILES([src/emacs-module.h])
3612 AC_SUBST_FILE([module_env_snippet_25])
3613 AC_SUBST_FILE([module_env_snippet_26])
3614 module_env_snippet_25="$srcdir/src/module-env-25.h"
3615 module_env_snippet_26="$srcdir/src/module-env-26.h"
3617 ### Use -lpng if available, unless '--with-png=no'.
3621 if test "${NS_IMPL_COCOA}" = yes; then
3623 elif test "${with_png}" != no; then
3624 # mingw32 loads the library dynamically.
3625 if test "$opsys" = mingw32; then
3626 AC_CHECK_HEADER([png.h], [HAVE_PNG=yes])
3627 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3628 AC_MSG_CHECKING([for png])
3629 png_cflags=`(libpng-config --cflags) 2>&AS_MESSAGE_LOG_FD` &&
3630 png_ldflags=`(libpng-config --ldflags) 2>&AS_MESSAGE_LOG_FD` || {
3631 # libpng-config does not work; configure by hand.
3632 # Debian unstable as of July 2003 has multiple libpngs, and puts png.h
3633 # in /usr/include/libpng.
3634 if test -r /usr/include/libpng/png.h &&
3635 test ! -r /usr/include/png.h; then
3636 png_cflags=-I/usr/include/libpng
3644 CFLAGS="$CFLAGS $png_cflags"
3645 LIBS="$png_ldflags -lz -lm $LIBS"
3647 [AC_LANG_PROGRAM([[#include <png.h>]],
3648 [[return !png_get_channels (0, 0);]])],
3650 PNG_CFLAGS=`AS_ECHO(["$png_cflags"]) | sed -e "$edit_cflags"`
3652 # $LIBPNG requires explicit -lz in some cases.
3653 # We don't know what those cases are, exactly, so play it safe and
3654 # append -lz to any nonempty $LIBPNG, unless we're already using LIBZ.
3655 if test -n "$LIBPNG" && test -z "$LIBZ"; then
3656 LIBPNG="$LIBPNG -lz"
3660 AC_MSG_RESULT([$HAVE_PNG])
3663 if test $HAVE_PNG = yes; then
3664 AC_DEFINE([HAVE_PNG], [1], [Define to 1 if you have the png library.])
3667 CFLAGS="$CFLAGS $PNG_CFLAGS"
3668 AC_CHECK_DECL([png_longjmp],
3670 [AC_DEFINE([PNG_DEPSTRUCT], [],
3671 [Define to empty to suppress deprecation warnings when building
3672 with --enable-gcc-warnings and with libpng versions before 1.5,
3673 which lack png_longjmp.])],
3679 AC_SUBST(PNG_CFLAGS)
3681 ### Use -ltiff if available, unless '--with-tiff=no'.
3682 ### mingw32 doesn't use -ltiff, since it loads the library dynamically.
3685 if test "${opsys}" = "mingw32"; then
3686 if test "${with_tiff}" != "no"; then
3687 AC_CHECK_HEADER(tiffio.h, HAVE_TIFF=yes, HAVE_TIFF=no)
3689 if test "${HAVE_TIFF}" = "yes"; then
3690 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3692 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3693 if test "${with_tiff}" != "no"; then
3694 AC_CHECK_HEADER(tiffio.h,
3696 # At least one tiff package requires the jpeg library.
3697 if test "${HAVE_JPEG}" = yes; then tifflibs="-ljpeg $tifflibs"; fi
3698 AC_CHECK_LIB(tiff, TIFFGetVersion, HAVE_TIFF=yes, , $tifflibs)])
3701 if test "${HAVE_TIFF}" = "yes"; then
3702 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3703 dnl FIXME -lz -lm, as per libpng?
3709 ### Use -lgif or -lungif if available, unless '--with-gif=no'.
3710 ### mingw32 doesn't use -lgif/-lungif, since it loads the library dynamically.
3713 if test "${opsys}" = "mingw32"; then
3714 if test "${with_gif}" != "no"; then
3715 AC_CHECK_HEADER(gif_lib.h, HAVE_GIF=yes, HAVE_GIF=no)
3717 if test "${HAVE_GIF}" = "yes"; then
3718 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3720 elif test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no" \
3721 || test "${HAVE_W32}" = "yes"; then
3722 AC_CHECK_HEADER(gif_lib.h,
3723 # EGifPutExtensionLast only exists from version libungif-4.1.0b1.
3724 # Earlier versions can crash Emacs, but version 5.0 removes EGifPutExtensionLast.
3725 [AC_CHECK_LIB(gif, GifMakeMapObject, HAVE_GIF=yes,
3726 [AC_CHECK_LIB(gif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=maybe)])])
3728 if test "$HAVE_GIF" = yes; then
3730 elif test "$HAVE_GIF" = maybe; then
3731 # If gif_lib.h but no libgif, try libungif.
3732 AC_CHECK_LIB(ungif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=no)
3733 test "$HAVE_GIF" = yes && LIBGIF=-lungif
3736 if test "${HAVE_GIF}" = "yes"; then
3737 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3742 dnl Check for required libraries.
3745 if test "${HAVE_X11}" = "yes"; then
3746 test "${with_xpm}" != "no" && test "${HAVE_XPM}" != "yes" &&
3747 MISSING="libXpm" && WITH_NO="--with-xpm=no"
3748 test "${with_jpeg}" != "no" && test "${HAVE_JPEG}" != "yes" &&
3749 MISSING="$MISSING libjpeg" && WITH_NO="$WITH_NO --with-jpeg=no"
3750 test "${with_png}" != "no" && test "${HAVE_PNG}" != "yes" &&
3751 MISSING="$MISSING libpng" && WITH_NO="$WITH_NO --with-png=no"
3752 test "${with_gif}" != "no" && test "${HAVE_GIF}" != "yes" &&
3753 MISSING="$MISSING libgif/libungif" && WITH_NO="$WITH_NO --with-gif=no"
3754 test "${with_tiff}" != "no" && test "${HAVE_TIFF}" != "yes" &&
3755 MISSING="$MISSING libtiff" && WITH_NO="$WITH_NO --with-tiff=no"
3757 test "${with_gnutls}" != "no" && test "${HAVE_GNUTLS}" != "yes" &&
3758 MISSING="$MISSING gnutls" && WITH_NO="$WITH_NO --with-gnutls=no"
3759 if test "X${MISSING}" != X; then
3760 AC_MSG_ERROR([The following required libraries were not found:
3762 Maybe some development libraries/packages are missing?
3763 If you don't want to link with them give
3765 as options to configure])
3768 ### Use -lgpm if available, unless '--with-gpm=no'.
3771 if test "${with_gpm}" != "no"; then
3772 AC_CHECK_HEADER(gpm.h,
3773 [AC_CHECK_LIB(gpm, Gpm_Open, HAVE_GPM=yes)])
3775 if test "${HAVE_GPM}" = "yes"; then
3776 AC_DEFINE(HAVE_GPM, 1, [Define to 1 if you have the gpm library (-lgpm).])
3782 dnl Check for malloc/malloc.h on darwin
3783 AC_CHECK_HEADERS_ONCE(malloc/malloc.h)
3786 ### Use NeXTstep API to implement GUI.
3787 if test "${HAVE_NS}" = "yes"; then
3788 AC_DEFINE(HAVE_NS, 1, [Define to 1 if you are using the NeXTstep API, either GNUstep or Cocoa on macOS.])
3789 if test "${NS_IMPL_COCOA}" = "yes"; then
3790 AC_DEFINE(NS_IMPL_COCOA, 1, [Define to 1 if you are using NS windowing under macOS.])
3792 if test "${NS_IMPL_GNUSTEP}" = "yes"; then
3793 AC_DEFINE(NS_IMPL_GNUSTEP, 1, [Define to 1 if you are using NS windowing under GNUstep.])
3794 if test $NS_GNUSTEP_CONFIG != yes; then
3795 # See also .m.o rule in src/Makefile.in. */
3796 # FIXME: are all these flags really needed? Document here why. */
3797 GNUSTEP_CFLAGS="-D_REENTRANT -fPIC -fno-strict-aliasing -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
3798 ## Extra CFLAGS applied to src/*.m files.
3799 GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -fgnu-runtime -Wno-import -fconstant-string-class=NSConstantString -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGSWARN -DGSDIAGNOSE"
3805 ### Use session management (-lSM -lICE) if available
3808 if test "${HAVE_X11}" = "yes"; then
3809 AC_CHECK_HEADER(X11/SM/SMlib.h,
3810 [AC_CHECK_LIB(SM, SmcOpenConnection, HAVE_X_SM=yes, , -lICE)])
3812 if test "${HAVE_X_SM}" = "yes"; then
3813 AC_DEFINE(HAVE_X_SM, 1, [Define to 1 if you have the SM library (-lSM).])
3819 ### Use XRandr (-lXrandr) if available
3821 if test "${HAVE_X11}" = "yes"; then
3822 XRANDR_REQUIRED=1.2.2
3823 XRANDR_MODULES="xrandr >= $XRANDR_REQUIRED"
3824 EMACS_CHECK_MODULES([XRANDR], [$XRANDR_MODULES])
3825 if test $HAVE_XRANDR = no; then
3826 # Test old way in case pkg-config doesn't have it (older machines).
3827 # Include Xrender.h by hand to work around bug in older Xrandr.h
3828 # (e.g. RHEL5) and silence (harmless) configure warning (bug#18465).
3829 AC_CHECK_HEADER(X11/extensions/Xrandr.h,
3830 [AC_CHECK_LIB(Xrandr, XRRGetScreenResources, HAVE_XRANDR=yes)],
3831 [], [AC_INCLUDES_DEFAULT
3832 #include <X11/extensions/Xrender.h>])
3833 if test $HAVE_XRANDR = yes; then
3834 XRANDR_LIBS=-lXrandr
3837 if test $HAVE_XRANDR = yes; then
3838 AC_DEFINE(HAVE_XRANDR, 1, [Define to 1 if you have the XRandr extension.])
3841 AC_SUBST(XRANDR_CFLAGS)
3842 AC_SUBST(XRANDR_LIBS)
3844 ### Use Xinerama (-lXinerama) if available
3846 if test "${HAVE_X11}" = "yes"; then
3847 XINERAMA_REQUIRED=1.0.2
3848 XINERAMA_MODULES="xinerama >= $XINERAMA_REQUIRED"
3849 EMACS_CHECK_MODULES([XINERAMA], [$XINERAMA_MODULES])
3850 if test $HAVE_XINERAMA = no; then
3851 # Test old way in case pkg-config doesn't have it (older machines).
3852 AC_CHECK_HEADER(X11/extensions/Xinerama.h,
3853 [AC_CHECK_LIB(Xinerama, XineramaQueryExtension, HAVE_XINERAMA=yes)])
3854 if test $HAVE_XINERAMA = yes; then
3855 XINERAMA_LIBS=-lXinerama
3858 if test $HAVE_XINERAMA = yes; then
3859 AC_DEFINE(HAVE_XINERAMA, 1, [Define to 1 if you have the Xinerama extension.])
3862 AC_SUBST(XINERAMA_CFLAGS)
3863 AC_SUBST(XINERAMA_LIBS)
3865 ### Use Xfixes (-lXfixes) if available
3867 if test "${HAVE_X11}" = "yes"; then
3868 XFIXES_REQUIRED=4.0.0
3869 XFIXES_MODULES="xfixes >= $XFIXES_REQUIRED"
3870 EMACS_CHECK_MODULES([XFIXES], [$XFIXES_MODULES])
3871 if test $HAVE_XFIXES = no; then
3872 # Test old way in case pkg-config doesn't have it (older machines).
3873 AC_CHECK_HEADER(X11/extensions/Xfixes.h,
3874 [AC_CHECK_LIB(Xfixes, XFixesHideCursor, HAVE_XFIXES=yes)])
3875 if test $HAVE_XFIXES = yes; then
3876 XFIXES_LIBS=-lXfixes
3879 if test $HAVE_XFIXES = yes; then
3880 AC_DEFINE(HAVE_XFIXES, 1, [Define to 1 if you have the Xfixes extension.])
3883 AC_SUBST(XFIXES_CFLAGS)
3884 AC_SUBST(XFIXES_LIBS)
3886 ### Use Xdbe (-lXdbe) if available
3888 if test "${HAVE_X11}" = "yes"; then
3889 AC_CHECK_HEADER(X11/extensions/Xdbe.h,
3890 [AC_CHECK_LIB(Xext, XdbeAllocateBackBufferName, HAVE_XDBE=yes)],
3892 [#include <X11/Xlib.h>
3894 if test $HAVE_XDBE = yes; then
3897 if test $HAVE_XDBE = yes; then
3898 AC_DEFINE(HAVE_XDBE, 1, [Define to 1 if you have the Xdbe extension.])
3901 AC_SUBST(XDBE_CFLAGS)
3904 ### Use libxml (-lxml2) if available
3905 ### mingw32 doesn't use -lxml2, since it loads the library dynamically.
3907 if test "${with_xml2}" != "no"; then
3908 ### I'm not sure what the version number should be, so I just guessed.
3909 EMACS_CHECK_MODULES([LIBXML2], [libxml-2.0 > 2.6.17])
3910 # Built-in libxml2 on OS X 10.8 lacks libxml-2.0.pc.
3911 if test "${HAVE_LIBXML2}" != "yes" && test "$opsys" = "darwin"; then
3912 SAVE_CPPFLAGS="$CPPFLAGS"
3913 if test -z "$xcsdkdir" -a -n "$XCRUN" -a ! -d /usr/include; then
3914 dnl /usr/include is not found. Try Xcode SDK dir if it is sane.
3915 xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
3917 *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
3921 CPPFLAGS="$CPPFLAGS -I$xcsdkdir/usr/include/libxml2"
3922 AC_CHECK_HEADER(libxml/HTMLparser.h,
3923 [AC_CHECK_DECL(HTML_PARSE_RECOVER, HAVE_LIBXML2=yes, ,
3924 [#include <libxml/HTMLparser.h>])])
3925 CPPFLAGS="$SAVE_CPPFLAGS"
3926 if test "${HAVE_LIBXML2}" = "yes"; then
3927 LIBXML2_CFLAGS="-I'$xcsdkdir/usr/include/libxml2'"
3928 LIBXML2_LIBS="-lxml2"
3931 if test "${HAVE_LIBXML2}" = "yes"; then
3932 if test "${opsys}" != "mingw32"; then
3933 AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no,
3938 if test "${HAVE_LIBXML2}" = "yes"; then
3939 AC_DEFINE(HAVE_LIBXML2, 1, [Define to 1 if you have the libxml library (-lxml2).])
3946 AC_SUBST(LIBXML2_LIBS)
3947 AC_SUBST(LIBXML2_CFLAGS)
3951 if test ! "$with_mailutils"; then
3952 # Check for mail-locking functions in a "mail" library. Probably this should
3953 # have the same check as for liblockfile below.
3954 AC_CHECK_LIB([mail], [maillock], [have_mail=yes], [have_mail=no])
3955 if test $have_mail = yes; then
3957 AC_DEFINE([HAVE_LIBMAIL], [1],
3958 [Define to 1 if you have the 'mail' library (-lmail).])
3961 LIBS="$LIBS_MAIL $LIBS"
3962 AC_CHECK_FUNCS([touchlock])
3965 dnl Debian, at least:
3966 AC_CHECK_LIB([lockfile], [maillock], [have_lockfile=yes], [have_lockfile=no])
3967 if test $have_lockfile = yes; then
3968 LIBS_MAIL=-llockfile
3969 AC_DEFINE([HAVE_LIBLOCKFILE], [1],
3970 [Define to 1 if you have the 'lockfile' library (-llockfile).])
3972 # If we have the shared liblockfile, assume we must use it for mail
3973 # locking (e.g. Debian). If we couldn't link against liblockfile
3974 # (no liblockfile.a installed), ensure that we don't need to.
3975 dnl This works for files generally, not just executables.
3976 dnl Should we look elsewhere for it? Maybe examine /etc/ld.so.conf?
3977 AC_CHECK_PROG([liblockfile], [liblockfile.so], [yes], [no],
3978 [/usr/lib:/lib:/usr/local/lib:$LD_LIBRARY_PATH])
3979 if test "$ac_cv_prog_liblockfile" = yes; then
3980 AC_MSG_ERROR([Shared liblockfile found but can't link against it.
3981 This probably means that movemail could lose mail.
3982 There may be a 'development' package to install containing liblockfile.])
3985 AC_CHECK_HEADERS([maillock.h])
3987 ## Define MAIL_USE_FLOCK (or LOCKF) if the mailer uses flock (or lockf) to
3988 ## interlock access to the mail spool. The alternative is a lock file named
3989 ## /usr/spool/mail/$USER.lock.
3992 aix4-2) mail_lock="lockf" ;;
3994 gnu|freebsd|dragonfly|netbsd|openbsd|darwin) mail_lock="flock" ;;
3996 ## On GNU/Linux systems, both methods are used by various mail programs.
3997 ## I assume most people are using newer mailers that have heard of flock.
3998 ## Change this if you need to.
3999 ## Debian contains a patch which says: "On Debian/GNU/Linux systems,
4000 ## configure gets the right answers, and that means *NOT* using flock.
4001 ## Using flock is guaranteed to be the wrong thing. See Debian Policy
4002 ## for details." and then uses '#ifdef DEBIAN'. Unfortunately the
4003 ## Debian maintainer hasn't provided a clean fix for Emacs.
4004 ## movemail.c will use 'maillock' when MAILDIR, HAVE_LIBMAIL and
4005 ## HAVE_MAILLOCK_H are defined, so the following appears to be the
4006 ## correct logic. -- fx
4007 ## We must check for HAVE_LIBLOCKFILE too, as movemail does.
4008 ## liblockfile is a Free Software replacement for libmail, used on
4009 ## Debian systems and elsewhere. -rfr.
4012 if test $have_mail = yes || test $have_lockfile = yes; then
4013 test $ac_cv_header_maillock_h = yes && mail_lock=no
4017 mail_lock="none-needed" ;;
4021 flock) AC_DEFINE([MAIL_USE_FLOCK], [1],
4022 [Define if the mailer uses flock to interlock the mail spool.]);;
4024 lockf) AC_DEFINE([MAIL_USE_LOCKF], [1],
4025 [Define if the mailer uses lockf to interlock the mail spool.]);;
4029 *) BLESSMAIL_TARGET="need-blessmail" ;;
4032 AC_SUBST([BLESSMAIL_TARGET])
4033 AC_SUBST([LIBS_MAIL])
4036 LIBS="$LIB_PTHREAD $LIB_MATH $LIBS"
4037 AC_CHECK_FUNCS(accept4 fchdir gethostname \
4038 getrusage get_current_dir_name \
4039 lrand48 random rint trunc \
4040 select getpagesize setlocale newlocale \
4041 getrlimit setrlimit shutdown \
4042 pthread_sigmask strsignal setitimer \
4043 sendto recvfrom getsockname getifaddrs freeifaddrs \
4045 getpwent endpwent getgrent endgrent \
4046 cfmakeraw cfsetspeed __executable_start log2 prctl)
4049 dnl No need to check for posix_memalign if aligned_alloc works.
4050 AC_CHECK_FUNCS([aligned_alloc posix_memalign], [break])
4051 AC_CHECK_DECLS([aligned_alloc], [], [], [[#include <stdlib.h>]])
4053 dnl Cannot use AC_CHECK_FUNCS
4054 AC_CACHE_CHECK([for __builtin_unwind_init],
4055 emacs_cv_func___builtin_unwind_init,
4056 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_unwind_init ();])],
4057 emacs_cv_func___builtin_unwind_init=yes,
4058 emacs_cv_func___builtin_unwind_init=no)])
4059 if test $emacs_cv_func___builtin_unwind_init = yes; then
4060 AC_DEFINE(HAVE___BUILTIN_UNWIND_INIT, 1,
4061 [Define to 1 if you have the '__builtin_unwind_init' function.])
4064 AC_CHECK_HEADERS_ONCE(sys/un.h)
4069 AC_CHECK_FUNCS(grantpt)
4071 # PTY-related GNU extensions.
4072 AC_CHECK_FUNCS(getpt posix_openpt)
4074 # Check this now, so that we will NOT find the above functions in ncurses.
4075 # That is because we have not set up to link ncurses in lib-src.
4076 # It's better to believe a function is not available
4077 # than to expect to find it in ncurses.
4078 # Also we need tputs and friends to be able to build at all.
4079 AC_MSG_CHECKING([for library containing tputs])
4080 # Run a test program that contains a call to tputs, a call that is
4081 # never executed. This tests whether a pre-'main' dynamic linker
4082 # works with the library. It's too much trouble to actually call
4083 # tputs in the test program, due to portability hassles. When
4084 # cross-compiling, assume the test program will run if it links.
4085 AC_DEFUN([tputs_link_source], [
4087 [[extern void tputs (const char *, int, int (*)(int));
4088 int main (int argc, char **argv)
4091 tputs (argv[0], 0, 0);
4095 if test "${opsys}" = "mingw32"; then
4098 # Maybe curses should be tried earlier?
4099 # See http://debbugs.gnu.org/cgi/bugreport.cgi?bug=9736#35
4100 for tputs_library in '' tinfo ncurses terminfo termcap curses; do
4102 if test -z "$tputs_library"; then
4106 LIBS_TERMCAP=-l$tputs_library
4108 LIBS="$LIBS_TERMCAP $LIBS"
4110 AC_RUN_IFELSE([tputs_link_source], [], [msg=no],
4111 [AC_LINK_IFELSE([tputs_link_source], [], [msg=no])])
4113 if test "X$msg" != Xno; then
4118 AC_MSG_RESULT([$msg])
4119 if test "X$msg" = Xno; then
4120 AC_MSG_ERROR([The required function 'tputs' was not found in any library.
4121 The following libraries were tried (in order):
4122 libtinfo, libncurses, libterminfo, libtermcap, libcurses
4123 Please try installing whichever of these libraries is most appropriate
4124 for your system, together with its header files.
4125 For example, a libncurses-dev(el) or similar package.])
4128 ## Use termcap instead of terminfo?
4129 ## Only true for: freebsd < 40000, ms-w32, msdos, netbsd < 599002500.
4131 ## FIXME? In the cases below where we unconditionally set
4132 ## LIBS_TERMCAP="-lncurses", this overrides LIBS_TERMCAP = -ltinfo,
4133 ## if that was found above to have tputs.
4134 ## Should we use the gnu* logic everywhere?
4136 ## darwin: Prevents crashes when running Emacs in Terminal.app under 10.2.
4137 ## The ncurses library has been moved out of the System framework in
4138 ## Mac OS X 10.2. So if configure detects it, set the command-line
4139 ## option to use it.
4140 darwin) LIBS_TERMCAP="-lncurses" ;;
4142 gnu*) test -z "$LIBS_TERMCAP" && LIBS_TERMCAP="-lncurses" ;;
4145 AC_MSG_CHECKING([whether FreeBSD is new enough to use terminfo])
4146 AC_CACHE_VAL(emacs_cv_freebsd_terminfo,
4147 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <osreldate.h>]],
4148 [[#if __FreeBSD_version < 400000
4151 ]])], emacs_cv_freebsd_terminfo=yes, emacs_cv_freebsd_terminfo=no)])
4153 AC_MSG_RESULT($emacs_cv_freebsd_terminfo)
4155 if test $emacs_cv_freebsd_terminfo = yes; then
4156 LIBS_TERMCAP="-lncurses"
4159 LIBS_TERMCAP="-ltermcap"
4169 if test "x$LIBS_TERMCAP" != "x-lterminfo"; then
4171 LIBS_TERMCAP="-ltermcap"
4175 openbsd | dragonfly) LIBS_TERMCAP="-lncurses" ;;
4177 ## hpux: Make sure we get select from libc rather than from libcurses
4178 ## because libcurses on HPUX 10.10 has a broken version of select.
4179 ## We used to use -lc -lcurses, but this may be cleaner.
4180 ## FIXME? But TERMINFO = yes on hpux (it used to be explicitly
4181 # set that way, now it uses the default). Isn't this a contradiction?
4182 hpux*) LIBS_TERMCAP="-ltermcap" ;;
4186 TERMCAP_OBJ=tparam.o
4187 if test $TERMINFO = yes; then
4188 AC_DEFINE(TERMINFO, 1, [Define to 1 if you use terminfo instead of termcap.])
4189 TERMCAP_OBJ=terminfo.o
4191 if test "X$LIBS_TERMCAP" = "X-lncurses"; then
4192 AC_DEFINE(USE_NCURSES, 1, [Define to 1 if you use ncurses.])
4194 AC_SUBST(LIBS_TERMCAP)
4195 AC_SUBST(TERMCAP_OBJ)
4197 # GNU/Linux-specific timer functions.
4198 AC_CACHE_CHECK([for timerfd interface], [emacs_cv_have_timerfd],
4200 [AC_LANG_PROGRAM([[#include <sys/timerfd.h>
4202 [[timerfd_create (CLOCK_REALTIME,
4203 TFD_CLOEXEC | TFD_NONBLOCK);
4204 timerfd_settime (0, TFD_TIMER_ABSTIME, 0, 0);]])],
4205 [emacs_cv_have_timerfd=yes],
4206 [emacs_cv_have_timerfd=no])])
4207 if test "$emacs_cv_have_timerfd" = yes; then
4208 AC_DEFINE([HAVE_TIMERFD], 1,
4209 [Define to 1 if timerfd functions are supported as in GNU/Linux.])
4212 # Alternate stack for signal handlers.
4213 AC_CACHE_CHECK([whether signals can be handled on alternate stack],
4214 [emacs_cv_alternate_stack],
4216 [AC_LANG_PROGRAM([[#include <signal.h>
4219 struct sigaction sa;
4220 ss.ss_sp = malloc (SIGSTKSZ);
4221 ss.ss_size = SIGSTKSZ;
4222 sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
4223 sigaltstack (&ss, 0);
4224 sigaction (SIGSEGV, &sa, 0);]])],
4225 [emacs_cv_alternate_stack=yes],
4226 [emacs_cv_alternate_stack=no])])
4228 # Do we need the Hesiod library to provide the support routines?
4229 dnl FIXME? Should we be skipping this on Darwin too?
4232 if test "$with_hesiod" != no ; then
4233 # Don't set $LIBS here -- see comments above. FIXME which comments?
4235 AC_CHECK_FUNC(res_send, , [AC_CHECK_FUNC(__res_send, ,
4236 [AC_CHECK_LIB(resolv, res_send, resolv=yes,
4237 [AC_CHECK_LIB(resolv, __res_send, resolv=yes)])])])
4238 if test "$resolv" = yes ; then
4244 AC_CHECK_FUNC(hes_getmailhost, , [AC_CHECK_LIB(hesiod, hes_getmailhost,
4245 hesiod=yes, :, $RESOLVLIB)])
4247 if test x"$hesiod" = xyes; then
4249 LIBRESOLV=$RESOLVLIB
4255 # These tell us which Kerberos-related libraries to use.
4262 if test "${with_kerberos}" != no; then
4264 AC_CHECK_LIB(com_err, com_err, have_com_err=yes, have_com_err=no)
4265 if test $have_com_err = yes; then
4266 COM_ERRLIB=-lcom_err
4267 LIBS="$COM_ERRLIB $LIBS"
4269 AC_CHECK_LIB(crypto, mit_des_cbc_encrypt, have_crypto=yes, have_crypto=no)
4270 if test $have_crypto = yes; then
4272 LIBS="$CRYPTOLIB $LIBS"
4274 AC_CHECK_LIB(k5crypto, mit_des_cbc_encrypt, have_k5crypto=yes, have_k5crypto=no)
4275 if test $have_k5crypto = yes; then
4276 CRYPTOLIB=-lk5crypto
4277 LIBS="$CRYPTOLIB $LIBS"
4279 AC_CHECK_LIB(krb5, krb5_init_context, have_krb5=yes, have_krb5=no)
4280 if test $have_krb5=yes; then
4282 LIBS="$KRB5LIB $LIBS"
4284 dnl FIXME Simplify. Does not match 22 logic, thanks to default_off?
4285 if test "${with_kerberos5}" = no; then
4286 AC_CHECK_LIB(des425, des_cbc_encrypt, have_des425=yes, have_des425=no )
4287 if test $have_des425 = yes; then
4289 LIBS="$DESLIB $LIBS"
4291 AC_CHECK_LIB(des, des_cbc_encrypt, have_des=yes, have_des=no)
4292 if test $have_des = yes; then
4294 LIBS="$DESLIB $LIBS"
4297 AC_CHECK_LIB(krb4, krb_get_cred, have_krb4=yes, have_krb4=no)
4298 if test $have_krb4 = yes; then
4300 LIBS="$KRB4LIB $LIBS"
4302 AC_CHECK_LIB(krb, krb_get_cred, have_krb=yes, have_krb=no)
4303 if test $have_krb = yes; then
4305 LIBS="$KRB4LIB $LIBS"
4310 if test "${with_kerberos5}" != no; then
4311 AC_CHECK_HEADERS(krb5.h,
4312 [AC_CHECK_MEMBERS([krb5_error.text, krb5_error.e_text],,,
4313 [#include <krb5.h>])])
4315 AC_CHECK_HEADERS(krb.h,,
4316 [AC_CHECK_HEADERS(kerberosIV/krb.h,,
4317 [AC_CHECK_HEADERS(kerberos/krb.h)])])
4319 AC_CHECK_HEADERS(com_err.h)
4323 AC_SUBST(COM_ERRLIB)
4329 AC_CHECK_HEADERS(valgrind/valgrind.h)
4331 AC_CHECK_MEMBERS([struct unipair.unicode], [], [], [[#include <linux/kd.h>]])
4333 AC_CHECK_FUNCS_ONCE([sbrk])
4336 AC_CHECK_FUNC(socket, , ok_so_far=no)
4337 if test $ok_so_far = yes; then
4338 AC_CHECK_HEADER(netinet/in.h, , ok_so_far=no)
4340 if test $ok_so_far = yes; then
4341 AC_CHECK_HEADER(arpa/inet.h, , ok_so_far=no)
4343 if test $ok_so_far = yes; then
4344 dnl Fixme: Not used. Should this be HAVE_SOCKETS?
4345 AC_DEFINE(HAVE_INET_SOCKETS, 1,
4346 [Define to 1 if you have inet sockets.])
4351 AC_CHECK_FUNCS(snprintf)
4353 dnl Check for glib. This differs from other library checks in that
4354 dnl Emacs need not link to glib unless some other library is already
4355 dnl linking to glib. Although glib provides no facilities that Emacs
4356 dnl needs for its own purposes, when glib is present Emacs needs to
4357 dnl use primitives like g_main_context_query to avoid clashing with
4358 dnl glib at a low level.
4360 dnl Check this late, since it depends on $GTK_CFLAGS etc.
4364 CFLAGS="$CFLAGS $GTK_CFLAGS $RSVG_CFLAGS $DBUS_CFLAGS $SETTINGS_CFLAGS"
4365 LIBS="$LIBS $GTK_LIBS $RSVG_LIBS $DBUS_LIBS $SETTINGS_LIBS"
4366 CFLAGS="$CFLAGS $NOTIFY_CFLAGS $CAIRO_CFLAGS"
4367 LIBS="$LIBS $NOTIFY_LIBS $CAIRO_LIBS"
4368 AC_MSG_CHECKING([whether GLib is linked in])
4369 AC_LINK_IFELSE([AC_LANG_PROGRAM(
4372 [[g_print ("Hello world");]])],
4375 AC_MSG_RESULT([$links_glib])
4376 if test "${links_glib}" = "yes"; then
4377 AC_DEFINE(HAVE_GLIB, 1, [Define to 1 if GLib is linked in.])
4378 if test "$HAVE_NS" = no;then
4386 dnl Adapted from Haible's version.
4387 AC_CACHE_CHECK([for nl_langinfo and CODESET], emacs_cv_langinfo_codeset,
4388 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
4389 [[char* cs = nl_langinfo(CODESET);]])],
4390 emacs_cv_langinfo_codeset=yes,
4391 emacs_cv_langinfo_codeset=no)
4393 if test $emacs_cv_langinfo_codeset = yes; then
4394 AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
4395 [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
4400 dnl Fixme: AC_SYS_POSIX_TERMIOS should probably be used, but it's not clear
4401 dnl how the tty code is related to POSIX and/or other versions of termios.
4402 dnl The following looks like a useful start.
4404 dnl AC_SYS_POSIX_TERMIOS
4405 dnl if test $ac_cv_sys_posix_termios = yes; then
4406 dnl AC_DEFINE(HAVE_TERMIOS, 1, [Define to 1 if you have POSIX-style functions
4407 dnl and macros for terminal control.])
4408 dnl AC_DEFINE(HAVE_TCATTR, 1, [Define to 1 if you have tcgetattr and tcsetattr.])
4411 dnl Turned on June 1996 supposing nobody will mind it.
4412 dnl MinGW emulates passwd database, so this feature doesn't make sense there.
4413 if test "${opsys}" != "mingw32"; then
4414 AC_DEFINE(AMPERSAND_FULL_NAME, 1, [Define to use the convention that &
4415 in the full name stands for the login id.])
4418 dnl Everybody supports this, except MS.
4419 dnl Seems like the kind of thing we should be testing for, though.
4420 ## Note: PTYs are broken on darwin <6. Use at your own risk.
4421 if test "${opsys}" != "mingw32"; then
4422 AC_DEFINE(HAVE_PTYS, 1, [Define if the system supports pty devices.])
4425 dnl Everybody supports this, except MS-DOS.
4426 dnl Seems like the kind of thing we should be testing for, though.
4427 dnl Compare with HAVE_INET_SOCKETS (which is unused...) above.
4428 AC_DEFINE(HAVE_SOCKETS, 1, [Define if the system supports
4429 4.2-compatible sockets.])
4431 AH_TEMPLATE(INTERNAL_TERMINAL, [This is substituted when $TERM is "internal".])
4433 AH_TEMPLATE(NULL_DEVICE, [Name of the file to open to get
4434 a null file, or a data sink.])
4435 if test "${opsys}" = "mingw32"; then
4436 AC_DEFINE(NULL_DEVICE, ["NUL:"])
4438 AC_DEFINE(NULL_DEVICE, ["/dev/null"])
4441 if test "${opsys}" = "mingw32"; then
4446 AC_DEFINE_UNQUOTED(SEPCHAR, ['$SEPCHAR'], [Character that separates PATH elements.])
4447 dnl This is for MinGW, and is used in test/Makefile.in.
4448 dnl The MSYS Bash has heuristics for replacing ':' with ';' when it
4449 dnl decides that a command-line argument to be passed to a MinGW program
4450 dnl is a PATH-style list of directories. But that heuristics plays it
4451 dnl safe, and only does the replacement when it is _absolutely_ sure it
4452 dnl sees a colon-separated list of file names; e.g. ":." is left alone,
4453 dnl which breaks in-tree builds. So we do this manually instead.
4454 dnl Note that we cannot rely on PATH_SEPARATOR, as that one will always
4455 dnl be computed as ':' in MSYS Bash.
4458 dnl Everybody supports this, except MS-DOS.
4459 AC_DEFINE(subprocesses, 1, [Define to enable asynchronous subprocesses.])
4461 AC_DEFINE(USER_FULL_NAME, [pw->pw_gecos], [How to get a user's full name.])
4464 AC_DEFINE(DIRECTORY_SEP, ['/'],
4465 [Character that separates directories in a file name.])
4467 if test "${opsys}" = "mingw32"; then
4468 AC_DEFINE(IS_DEVICE_SEP(_c_), [((_c_) == ':')],
4469 [Returns true if character is a device separator.])
4471 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == '/' || (_c_) == '\\')],
4472 [Returns true if character is a directory separator.])
4474 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP(_c_))],
4475 [Returns true if character is any form of separator.])
4477 AC_DEFINE(IS_DEVICE_SEP(_c_), 0,
4478 [Returns true if character is a device separator.])
4480 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == DIRECTORY_SEP)],
4481 [Returns true if character is a directory separator.])
4483 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_))],
4484 [Returns true if character is any form of separator.])
4487 if test "$USE_X_TOOLKIT" != "none"; then
4491 dnl Assar Westerlund <assar@sics.se> says this is necessary
4492 dnl for HP-UX 10.20, and that it works for HP-UX 0 as well.
4496 if test "$have_editres" != no && test ! -z "$LIBXMU"; then
4498 dnl See libXmu.a check above.
4499 if test x$HAVE_X11XTR6 = xyes; then
4500 LIBS="-lXt -lSM -lICE $LIBXMU"
4502 OTHERLIBS="-lXt -$LIBXMU"
4505 [#include <X11/Intrinsic.h>
4506 #include <X11/Xmu/Editres.h>],
4507 [_XEditResCheckMessages (0, 0, 0, 0);],
4508 [AC_DEFINE([X_TOOLKIT_EDITRES], 1,
4509 [Define to 1 if we should use XEditRes.])])
4516 dnl Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
4517 dnl instead, there's a system variable _sys_nsig. Unfortunately, we
4518 dnl need the constant to dimension an array. So wire in the appropriate
4520 AC_DEFINE(NSIG_MINIMUM, 32, [Minimum value of NSIG.])
4524 emacs_broken_SIGIO=no
4527 dnl SIGIO exists, but the feature doesn't work in the way Emacs needs.
4528 dnl See eg <http://article.gmane.org/gmane.os.openbsd.ports/46831>.
4529 hpux* | nacl | openbsd | sol2* | unixware )
4530 emacs_broken_SIGIO=yes
4534 dnl On AIX Emacs uses the gmalloc.c malloc implementation. But given
4535 dnl the way this system works, libc functions that return malloced
4536 dnl memory use the libc malloc implementation. Calling xfree or
4537 dnl xrealloc on the results of such functions results in a crash.
4539 dnl One solution for this could be to define SYSTEM_MALLOC in configure,
4540 dnl but that does not currently work on this system.
4542 dnl It is possible to completely override the malloc implementation on
4543 dnl AIX, but that involves putting the malloc functions in a shared
4544 dnl library and setting the MALLOCTYPE environment variable to point to
4545 dnl that shared library.
4547 dnl Emacs currently calls xrealloc on the results of get_current_dir name,
4548 dnl to avoid a crash just use the Emacs implementation for that function.
4550 dnl FIXME We could change the AC_CHECK_FUNCS call near the start
4551 dnl of this file, so that we do not check for get_current_dir_name
4552 dnl on AIX. But that might be fragile if something else ends
4553 dnl up testing for get_current_dir_name as a dependency.
4554 AC_DEFINE(BROKEN_GET_CURRENT_DIR_NAME, 1, [Define if
4555 get_current_dir_name should not be used.])
4559 dnl Circumvent a bug in FreeBSD. In the following sequence of
4560 dnl writes/reads on a PTY, read(2) returns bogus data:
4562 dnl write(2) 1022 bytes
4563 dnl write(2) 954 bytes, get EAGAIN
4564 dnl read(2) 1024 bytes in process_read_output
4565 dnl read(2) 11 bytes in process_read_output
4567 dnl That is, read(2) returns more bytes than have ever been written
4568 dnl successfully. The 1033 bytes read are the 1022 bytes written
4569 dnl successfully after processing (for example with CRs added if the
4570 dnl terminal is set up that way which it is here). The same bytes will
4571 dnl be seen again in a later read(2), without the CRs.
4572 AC_DEFINE(BROKEN_PTY_READ_AFTER_EAGAIN, 1, [Define on FreeBSD to
4573 work around an issue when reading from a PTY.])
4579 dnl FIXME Can't we test if this exists (eg /proc/$$)?
4580 AC_DEFINE(HAVE_PROCFS, 1, [Define if you have the /proc filesystem.])
4585 darwin | dragonfly | freebsd | netbsd | openbsd )
4586 AC_DEFINE(DONT_REOPEN_PTY, 1, [Define if process.c does not need to
4587 close a pty to make it a controlling terminal (it is already a
4588 controlling terminal of the subprocess, because we did ioctl TIOCSCTTY).])
4592 dnl FIXME Surely we can test for this rather than hard-code it.
4594 netbsd | openbsd) sound_device="/dev/audio" ;;
4595 *) sound_device="/dev/dsp" ;;
4599 AC_DEFINE_UNQUOTED(DEFAULT_SOUND_DEVICE, "$sound_device",
4600 [Name of the default sound device.])
4603 dnl Emacs can read input using SIGIO and buffering characters itself,
4604 dnl or using CBREAK mode and making C-g cause SIGINT.
4605 dnl The choice is controlled by the variable interrupt_input.
4607 dnl Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
4609 dnl Emacs uses the presence of the USABLE_SIGIO macro
4610 dnl to indicate whether or not signal-driven I/O is possible. It uses
4611 dnl INTERRUPT_INPUT to decide whether to use it by default.
4613 dnl SIGIO can be used only on systems that implement it (4.2 and 4.3).
4614 dnl CBREAK mode has two disadvantages
4615 dnl 1) At least in 4.2, it is impossible to handle the Meta key properly.
4616 dnl I hear that in system V this problem does not exist.
4617 dnl 2) Control-G causes output to be discarded.
4618 dnl I do not know whether this can be fixed in system V.
4620 dnl Another method of doing input is planned but not implemented.
4621 dnl It would have Emacs fork off a separate process
4622 dnl to read the input and send it to the true Emacs process
4625 darwin | gnu-linux | gnu-kfreebsd )
4626 AC_DEFINE(INTERRUPT_INPUT, 1, [Define to read input using SIGIO.])
4631 dnl If the system's imake configuration file defines 'NeedWidePrototypes'
4632 dnl as 'NO', we must define NARROWPROTO manually. Such a define is
4633 dnl generated in the Makefile generated by 'xmkmf'. If we don't define
4634 dnl NARROWPROTO, we will see the wrong function prototypes for X functions
4635 dnl taking float or double parameters.
4637 cygwin|gnu|gnu-linux|gnu-kfreebsd|freebsd|netbsd|openbsd)
4638 AC_DEFINE(NARROWPROTO, 1, [Define if system's imake configuration
4639 file defines 'NeedWidePrototypes' as 'NO'.])
4644 dnl Used in process.c, this must be a loop, even if it only runs once.
4645 AH_TEMPLATE(PTY_ITERATION, [How to iterate over PTYs.])
4646 dnl Only used if !PTY_ITERATION. Iterate from FIRST_PTY_LETTER to z,
4647 dnl trying suffixes 0-16.
4648 AH_TEMPLATE(FIRST_PTY_LETTER, [Letter to use in finding device name of
4649 first PTY, if PTYs are supported.])
4650 AH_TEMPLATE(PTY_OPEN, [How to open a PTY, if non-standard.])
4651 AH_TEMPLATE(PTY_NAME_SPRINTF, [How to get the device name of the control
4652 end of a PTY, if non-standard.])
4653 AH_TEMPLATE(PTY_TTY_NAME_SPRINTF, [How to get device name of the tty
4654 end of a PTY, if non-standard.])
4658 AC_DEFINE(PTY_ITERATION, [int c; for (c = 0; !c ; c++)])
4659 dnl You allocate a pty by opening /dev/ptc to get the master side.
4660 dnl To get the name of the slave side, you just ttyname() the master side.
4661 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptc");])
4662 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [strcpy (pty_name, ttyname (fd));])
4666 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4667 dnl multi-line AC_DEFINEs are hard. :(
4668 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)])
4669 AC_DEFINE(PTY_NAME_SPRINTF, [])
4670 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
4674 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4677 gnu-linux | gnu-kfreebsd | dragonfly | freebsd | netbsd | darwin | nacl )
4679 if test "x$ac_cv_func_grantpt" = xyes; then
4680 AC_DEFINE(UNIX98_PTYS, 1, [Define if the system has Unix98 PTYs.])
4681 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4682 dnl Note that grantpt and unlockpt may fork. We must block SIGCHLD
4683 dnl to prevent sigchld_handler from intercepting the child's death.
4684 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); }])
4685 dnl if HAVE_POSIX_OPENPT
4686 if test "x$ac_cv_func_posix_openpt" = xyes; then
4687 AC_DEFINE(PTY_OPEN, [do { fd = posix_openpt (O_RDWR | O_CLOEXEC | O_NOCTTY); if (fd < 0 && errno == EINVAL) fd = posix_openpt (O_RDWR | O_NOCTTY); } while (false)])
4688 AC_DEFINE(PTY_NAME_SPRINTF, [])
4690 elif test "x$ac_cv_func_getpt" = xyes; then
4691 AC_DEFINE(PTY_OPEN, [fd = getpt ()])
4692 AC_DEFINE(PTY_NAME_SPRINTF, [])
4694 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4697 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4702 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4703 AC_DEFINE(PTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/ptym/pty%c%x", c, i);])
4704 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/pty/tty%c%x", c, i);])
4708 dnl On SysVr4, grantpt(3) forks a subprocess, so do not use
4709 dnl O_CLOEXEC when opening the pty, and keep the SIGCHLD handler
4710 dnl from intercepting that death. If any child but grantpt's should die
4711 dnl within, it should be caught after sigrelse(2).
4712 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4713 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); }])
4717 dnl Comments are as per sol2*.
4718 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4719 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); }])
4726 dnl This change means that we don't loop through allocate_pty too
4727 dnl many times in the (rare) event of a failure.
4728 AC_DEFINE(FIRST_PTY_LETTER, ['z'])
4729 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4730 dnl Push various streams modules onto a PTY channel. Used in process.c.
4731 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.])
4736 AH_TEMPLATE(SIGNALS_VIA_CHARACTERS, [Make process_send_signal work by
4737 "typing" a signal character on the pty.])
4740 dnl Perry Smith <pedz@ddivt1.austin.ibm.com> says this is correct for AIX.
4741 aix4-2 | cygwin | gnu | dragonfly | freebsd | netbsd | openbsd | darwin )
4742 AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4745 dnl 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works.
4746 dnl FIXME Does gnu-kfreebsd have linux/version.h? It seems unlikely...
4747 gnu-linux | gnu-kfreebsd )
4749 AC_MSG_CHECKING([for signals via characters])
4750 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4751 #include <linux/version.h>
4752 #if LINUX_VERSION_CODE < 0x20400
4753 # error "Linux version too old"
4755 ]], [[]])], emacs_signals_via_chars=yes, emacs_signals_via_chars=no)
4757 AC_MSG_RESULT([$emacs_signals_via_chars])
4758 test $emacs_signals_via_chars = yes && AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4763 AH_TEMPLATE(TAB3, [Undocumented.])
4766 darwin) AC_DEFINE(TAB3, OXTABS) ;;
4768 gnu | dragonfly | freebsd | netbsd | openbsd )
4769 AC_DEFINE(TABDLY, OXTABS, [Undocumented.])
4770 AC_DEFINE(TAB3, OXTABS)
4773 gnu-linux | gnu-kfreebsd )
4774 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4778 ]], [[]])], AC_DEFINE(GC_MARK_SECONDARY_STACK(),
4779 [do { extern void *__libc_ia64_register_backing_store_base; __builtin_ia64_flushrs (); mark_memory (__libc_ia64_register_backing_store_base, __builtin_ia64_bsp ());} while (false)],
4780 [Mark a secondary stack, like the register stack on the ia64.]), [])
4784 AC_DEFINE(RUN_TIME_REMAP, 1, [Define if emacs.c needs to call
4785 run_time_remap; for HPUX.])
4790 dnl This won't be used automatically yet. We also need to know, at least,
4791 dnl that the stack is continuous.
4792 AH_TEMPLATE(GC_SETJMP_WORKS, [Define if setjmp is known to save all
4793 registers relevant for conservative garbage collection in the jmp_buf.])
4797 dnl Not all the architectures are tested, but there are Debian packages
4798 dnl for SCM and/or Guile on them, so the technique must work. See also
4799 dnl comments in alloc.c concerning setjmp and gcc.
4800 dnl Fixme: it's probably safe to just use the GCC conditional below.
4801 gnu-linux | gnu-kfreebsd )
4802 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4803 #if defined __i386__ || defined __sparc__ || defined __mc68000__ \
4804 || defined __alpha__ || defined __mips__ || defined __s390__ \
4805 || defined __arm__ || defined __powerpc__ || defined __amd64__ \
4806 || defined __ia64__ || defined __sh__
4809 # error "setjmp not known to work on this arch"
4811 ]], [[]])], AC_DEFINE(GC_SETJMP_WORKS, 1))
4816 if test x$GCC = xyes; then
4817 dnl GC_SETJMP_WORKS is nearly always appropriate for GCC.
4818 AC_DEFINE(GC_SETJMP_WORKS, 1)
4821 aix* | dragonfly | freebsd | netbsd | openbsd | sol2* )
4822 AC_DEFINE(GC_SETJMP_WORKS, 1)
4827 dnl In a weird quirk, MS runtime uses _setjmp and longjmp.
4828 AC_CACHE_CHECK([for _setjmp], [emacs_cv_func__setjmp],
4831 [[#include <setjmp.h>
4833 # define _longjmp longjmp
4838 _longjmp (j, 1);]])],
4839 [emacs_cv_func__setjmp=yes],
4840 [emacs_cv_func__setjmp=no])])
4841 if test $emacs_cv_func__setjmp = yes; then
4842 AC_DEFINE([HAVE__SETJMP], 1, [Define to 1 if _setjmp and _longjmp work.])
4845 # We need to preserve signal mask to handle C stack overflows.
4846 AC_CACHE_CHECK([for sigsetjmp], [emacs_cv_func_sigsetjmp],
4849 [[#include <setjmp.h>
4852 if (! sigsetjmp (j, 1))
4853 siglongjmp (j, 1);]])],
4854 [emacs_cv_func_sigsetjmp=yes],
4855 [emacs_cv_func_sigsetjmp=no])])
4856 if test $emacs_cv_func_sigsetjmp = yes; then
4857 AC_DEFINE([HAVE_SIGSETJMP], 1,
4858 [Define to 1 if sigsetjmp and siglongjmp work.])
4861 case $emacs_cv_func_sigsetjmp,$emacs_cv_alternate_stack,$opsys in
4862 yes,yes,* | *,*,mingw32)
4863 AC_DEFINE([HAVE_STACK_OVERFLOW_HANDLING], 1,
4864 [Define to 1 if C stack overflow can be handled in some cases.]);;
4869 dnl TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
4870 dnl subprocesses the usual way. But TIOCSIGNAL does work for PTYs,
4871 dnl and this is all we need.
4872 AC_DEFINE(TIOCSIGSEND, TIOCSIGNAL, [Some platforms redefine this.])
4879 dnl Used in xfaces.c.
4880 AC_DEFINE(XOS_NEEDS_TIME_H, 1, [Compensate for a bug in Xos.h on
4881 some systems, where it requires time.h.])
4886 dnl Define symbols to identify the version of Unix this is.
4887 dnl Define all the symbols that apply correctly.
4888 AH_TEMPLATE(DOS_NT, [Define if the system is MS DOS or MS Windows.])
4889 AH_TEMPLATE(MSDOS, [Define if the system is MS DOS.])
4890 AH_TEMPLATE(USG, [Define if the system is compatible with System III.])
4891 AH_TEMPLATE(USG5_4, [Define if the system is compatible with System V Release 4.])
4896 dnl This symbol should be defined on AIX Version 3 ???????
4897 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4899 # error "_AIX not defined"
4901 ]], [[]])], [], AC_DEFINE(_AIX, [], [Define if the system is AIX.]))
4905 AC_DEFINE(CYGWIN, 1, [Define if the system is Cygwin.])
4909 dnl Not __APPLE__, as this may not be defined on non-macOS Darwin.
4910 dnl Not DARWIN, because Panther and lower CoreFoundation.h use DARWIN to
4911 dnl distinguish macOS from pure Darwin.
4912 AC_DEFINE(DARWIN_OS, [], [Define if the system is Darwin.])
4915 gnu-linux | gnu-kfreebsd )
4917 AC_DEFINE(GNU_LINUX, [], [Define if ths system is compatible with GNU/Linux.])
4922 AC_DEFINE(HPUX, [], [Define if the system is HPUX.])
4926 AC_DEFINE(DOS_NT, [])
4927 AC_DEFINE(WINDOWSNT, 1, [Define if compiling for native MS Windows.])
4928 if test "x$ac_enable_checking" != "x" ; then
4929 AC_DEFINE(EMACSDEBUG, 1, [Define to 1 to enable w32 debug facilities.])
4935 AC_DEFINE(USG5_4, [])
4936 AC_DEFINE(SOLARIS2, [], [Define if the system is Solaris.])
4941 AC_DEFINE(USG5_4, [])
4945 AC_CACHE_CHECK([for usable FIONREAD], [emacs_cv_usable_FIONREAD],
4948 dnl BUILD 9008 - FIONREAD problem still exists in X-Windows.
4949 emacs_cv_usable_FIONREAD=no
4953 emacs_cv_usable_FIONREAD=yes
4958 [AC_LANG_PROGRAM([[#include <sys/types.h>
4959 #include <sys/ioctl.h>
4961 # include <sys/filio.h>
4964 [[int foo = ioctl (0, FIONREAD, &foo);]])],
4965 [emacs_cv_usable_FIONREAD=yes],
4966 [emacs_cv_usable_FIONREAD=no])
4969 if test $emacs_cv_usable_FIONREAD = yes; then
4970 AC_DEFINE([USABLE_FIONREAD], [1], [Define to 1 if FIONREAD is usable.])
4972 if test $emacs_broken_SIGIO = no; then
4973 AC_CACHE_CHECK([for usable SIGIO], [emacs_cv_usable_SIGIO],
4975 [AC_LANG_PROGRAM([[#include <fcntl.h>
4978 [[int foo = SIGIO | F_SETFL | FASYNC;]])],
4979 [emacs_cv_usable_SIGIO=yes],
4980 [emacs_cv_usable_SIGIO=no])],
4981 [emacs_cv_usable_SIGIO=yes],
4982 [emacs_cv_usable_SIGIO=no])
4983 if test $emacs_cv_usable_SIGIO = yes; then
4984 AC_DEFINE([USABLE_SIGIO], [1], [Define to 1 if SIGIO is usable.])
4991 dnl It works to open the pty's tty in the parent (Emacs), then
4992 dnl close and reopen it in the child.
4993 AC_DEFINE(USG_SUBTTY_WORKS, 1, [Define for USG systems where it
4994 works to open a pty's tty in the parent process, then close and
4995 reopen it in the child.])
4999 AC_DEFINE(_STRUCTURED_PROC, 1, [Needed for system_process_attributes
5004 # Set up the CFLAGS for real compilation, so we can substitute it.
5005 CFLAGS="$REAL_CFLAGS"
5006 CPPFLAGS="$REAL_CPPFLAGS"
5009 ## Hack to detect a buggy GCC version.
5010 if test "$GCC" = yes && \
5011 $CC --version 2> /dev/null | grep 'gcc.* 4.5.0' >/dev/null; then
5013 *-fno-optimize-sibling-calls*) ;;
5015 AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS.]);;
5019 version=$PACKAGE_VERSION
5021 copyright="Copyright (C) 2017 Free Software Foundation, Inc."
5022 AC_DEFINE_UNQUOTED(COPYRIGHT, ["$copyright"],
5023 [Short copyright string for this version of Emacs.])
5026 ### Specify what sort of things we'll be editing into Makefile and config.h.
5027 ### Use configuration here uncanonicalized to avoid exceeding size limits.
5029 AC_SUBST(configuration)
5034 AC_SUBST(exec_prefix)
5037 AC_SUBST(sharedstatedir)
5038 AC_SUBST(libexecdir)
5042 AC_SUBST(standardlisppath)
5043 AC_SUBST(locallisppath)
5045 AC_SUBST(x_default_search_path)
5047 AC_SUBST(archlibdir)
5053 ## FIXME? Nothing uses @LD_SWITCH_X_SITE@.
5054 ## src/Makefile.in did add LD_SWITCH_X_SITE (as a cpp define) to the
5055 ## end of LIBX_BASE, but nothing ever set it.
5056 AC_SUBST(LD_SWITCH_X_SITE)
5057 AC_SUBST(C_SWITCH_X_SITE)
5058 AC_SUBST(GNUSTEP_CFLAGS)
5060 ## Used in lwlib/Makefile.in.
5061 AC_SUBST(X_TOOLKIT_TYPE)
5063 AC_SUBST(ns_appbindir)
5064 AC_SUBST(ns_appresdir)
5066 AC_SUBST(GNU_OBJC_CFLAGS)
5067 AC_SUBST(OTHER_FILES)
5069 if test -n "${term_header}"; then
5070 AC_DEFINE_UNQUOTED(TERM_HEADER, "${term_header}",
5071 [Define to the header for the built-in window system.])
5074 AC_DEFINE_UNQUOTED(EMACS_CONFIGURATION, "${canonical}",
5075 [Define to the canonical Emacs configuration name.])
5076 AC_DEFINE_UNQUOTED(EMACS_CONFIG_OPTIONS, "${emacs_config_options}",
5077 [Define to the options passed to configure.])
5082 if test "${HAVE_X_WINDOWS}" = "yes" ; then
5083 AC_DEFINE(HAVE_X_WINDOWS, 1,
5084 [Define to 1 if you want to use the X window system.])
5086 XOBJ="xterm.o xfns.o xselect.o xrdb.o xsmfns.o xsettings.o"
5088 if test "$HAVE_CAIRO" = "yes"; then
5089 FONT_OBJ="ftfont.o ftcrfont.o"
5090 elif test "$HAVE_XFT" = "yes"; then
5091 FONT_OBJ="$FONT_OBJ ftfont.o xftfont.o ftxfont.o"
5092 elif test "$HAVE_FREETYPE" = "yes"; then
5093 FONT_OBJ="$FONT_OBJ ftfont.o ftxfont.o"
5103 if test "${USE_X_TOOLKIT}" != "none" ; then
5105 AC_DEFINE(USE_X_TOOLKIT, 1, [Define to 1 if using an X toolkit.])
5106 if test "${USE_X_TOOLKIT}" = "LUCID"; then
5107 AC_DEFINE(USE_LUCID, 1, [Define to 1 if using the Lucid X toolkit.])
5108 elif test "${USE_X_TOOLKIT}" = "MOTIF"; then
5109 AC_DEFINE(USE_MOTIF, 1, [Define to 1 if using the Motif X toolkit.])
5113 ## Paul Abrahams <abrahams at equinox.shaysnet.com> says this is needed.
5114 MOTIF_LIBW="$MOTIF_LIBW -lXpm"
5118 ## Richard Anthony Ryan <ryanr at ellingtn.ftc.nrcs.usda.gov>
5119 ## says -lXimp is needed in UNIX_SV ... 4.2 1.1.2.
5120 MOTIF_LIBW="MOTIF_LIBW -lXimp"
5124 ## olson@mcs.anl.gov says -li18n is needed by -lXm.
5125 MOTIF_LIBW="$MOTIF_LIBW -li18n"
5128 MOTIF_LIBW="$MOTIF_LIBW $LIBXP"
5131 AC_SUBST(WIDGET_OBJ)
5134 case "$USE_X_TOOLKIT" in
5135 MOTIF) TOOLKIT_LIBW="$MOTIF_LIBW" ;;
5136 LUCID) TOOLKIT_LIBW="$LUCID_LIBW" ;;
5137 none) test "x$HAVE_GTK" = "xyes" && TOOLKIT_LIBW="$GTK_LIBS" ;;
5139 if test "$HAVE_XWIDGETS" = "yes"; then
5140 TOOLKIT_LIBW="$TOOLKIT_LIBW -lXcomposite"
5142 AC_SUBST(TOOLKIT_LIBW)
5144 if test "${opsys}" != "mingw32"; then
5145 if test "$USE_X_TOOLKIT" = "none"; then
5146 LIBXT_OTHER="\$(LIBXSM)"
5148 LIBXT_OTHER="\$(LIBXMU) -lXt \$(LIBXTR6) -lXext"
5151 AC_SUBST(LIBXT_OTHER)
5153 if test "${HAVE_X11}" = "yes" ; then
5154 AC_DEFINE(HAVE_X11, 1,
5155 [Define to 1 if you want to use version 11 of X windows.])
5156 LIBX_OTHER="\$(LIBXT) \$(LIBX_EXTRA)"
5160 AC_SUBST(LIBX_OTHER)
5163 if test "$HAVE_GTK" = yes || test "$HAVE_X11" != yes; then
5165 elif test "$USE_X_TOOLKIT" = none; then
5167 LIBXMENU='$(oldXMenudir)/libXMenu11.a'
5168 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS oldXMenu"
5170 LIBXMENU='$(lwlibdir)/liblw.a'
5171 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS lwlib"
5175 AC_CACHE_CHECK([for struct alignment],
5176 [emacs_cv_struct_alignment],
5178 [AC_LANG_PROGRAM([[#include <stddef.h>
5179 struct __attribute__ ((aligned (8))) s { char c; };
5180 struct t { char c; struct s s; };
5181 char verify[offsetof (struct t, s) == 8 ? 1 : -1];
5183 [emacs_cv_struct_alignment=yes],
5184 [emacs_cv_struct_alignment=no])])
5185 if test "$emacs_cv_struct_alignment" = yes; then
5186 AC_DEFINE([HAVE_STRUCT_ATTRIBUTE_ALIGNED], 1,
5187 [Define to 1 if 'struct __attribute__ ((aligned (N)))' aligns the
5188 structure to an N-byte boundary.])
5191 if test "${GNU_MALLOC}" = "yes" ; then
5192 AC_DEFINE(GNU_MALLOC, 1,
5193 [Define to 1 if you want to use the GNU memory allocator.])
5197 if test "${REL_ALLOC}" = "yes" ; then
5198 AC_DEFINE(REL_ALLOC, 1,
5199 [Define REL_ALLOC if you want to use the relocating allocator for
5202 test "$system_malloc" != "yes" && RALLOC_OBJ=ralloc.o
5204 AC_SUBST(RALLOC_OBJ)
5206 if test "$opsys" = "cygwin"; then
5207 CYGWIN_OBJ="cygw32.o"
5208 ## Cygwin differs because of its unexec().
5210 POST_ALLOC_OBJ=lastfile.o
5211 elif test "$opsys" = "mingw32"; then
5214 POST_ALLOC_OBJ=lastfile.o
5217 PRE_ALLOC_OBJ=lastfile.o
5220 AC_SUBST(CYGWIN_OBJ)
5221 AC_SUBST(PRE_ALLOC_OBJ)
5222 AC_SUBST(POST_ALLOC_OBJ)
5224 dnl Call this 'FORTIFY_SOUR' so that it sorts before the 'FORTIFY_SOURCE'
5225 dnl verbatim defined above. The tricky name is apropos, as this hack
5226 dnl makes Fortify go sour!
5227 AH_VERBATIM([FORTIFY_SOUR],
5228 [/* Without the following workaround, Emacs runs slowly on OS X 10.8.
5229 The workaround disables some useful run-time checking, so it
5230 should be conditional to the platforms with the performance bug.
5231 Perhaps Apple will fix this some day; also see m4/extern-inline.m4. */
5232 #if defined __APPLE__ && defined __GNUC__
5233 # ifndef _DONT_USE_CTYPE_INLINE_
5234 # define _DONT_USE_CTYPE_INLINE_
5236 # ifndef _FORTIFY_SOURCE
5237 # define _FORTIFY_SOURCE 0
5242 # If user asks to omit features, disable optional features that gnulib
5243 # might otherwise enable.
5244 if test "$with_features" = no && test "$enable_acl" != yes; then
5248 # Configure gnulib. Although this does not affect CFLAGS or LIBS permanently.
5249 # it temporarily reverts them to their pre-pkg-config values,
5250 # because gnulib needs to work with both src (which uses the
5251 # pkg-config stuff) and lib-src (which does not). For example, gnulib
5252 # may need to determine whether LIB_CLOCK_GETTIME should contain -lrt,
5253 # and it therefore needs to run in an environment where LIBS does not
5254 # already contain -lrt merely because 'pkg-config --libs' printed '-lrt'
5255 # for some package unrelated to lib-src.
5258 CFLAGS=$pre_PKG_CONFIG_CFLAGS
5259 LIBS="$LIB_PTHREAD $pre_PKG_CONFIG_LIBS"
5260 gl_ASSERT_NO_GNULIB_POSIXCHECK
5261 gl_ASSERT_NO_GNULIB_TESTS
5266 if test "${opsys}" = "mingw32"; then
5267 CPPFLAGS="$CPPFLAGS -DUSE_CRT_DLL=1 -I \${abs_top_srcdir}/nt/inc"
5268 # Remove unneeded switches from the value of CC that goes to Makefiles
5269 CC=`AS_ECHO(["$CC"]) | sed -e "s,$GCC_TEST_OPTIONS,,"`
5273 aix4-2) LD_SWITCH_SYSTEM_TEMACS="-Wl,-bnodelcsect" ;;
5275 cygwin) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000" ;;
5278 ## The -headerpad option tells ld (see man page) to leave room at the
5279 ## end of the header for adding load commands. Needed for dumping.
5280 ## 0x1000 is enough for roughly 52 load commands on the x86_64
5281 ## architecture (where they are 78 bytes each). The actual number of
5282 ## load commands added is not consistent but normally ranges from
5283 ## about 14 to about 34. Setting it high gets us plenty of slop and
5284 ## only costs about 1.5K of wasted binary space.
5285 headerpad_extra=1000
5286 if test "$HAVE_NS" = "yes"; then
5287 libs_nsgui="-framework AppKit"
5288 if test "$NS_IMPL_COCOA" = "yes"; then
5289 libs_nsgui="$libs_nsgui -framework IOKit"
5294 LD_SWITCH_SYSTEM_TEMACS="-fno-pie -prebind $libs_nsgui -Xlinker -headerpad -Xlinker $headerpad_extra"
5296 ## This is here because src/Makefile.in did some extra fiddling around
5297 ## with LD_SWITCH_SYSTEM. It seems cleaner to put this in
5298 ## LD_SWITCH_SYSTEM_TEMACS instead,
5299 test "x$LD_SWITCH_SYSTEM" = "x" && test "x$GCC" != "xyes" && \
5300 LD_SWITCH_SYSTEM_TEMACS="-X $LD_SWITCH_SYSTEM_TEMACS"
5303 ## LD_SWITCH_X_SITE_RPATH is a -rpath option saying where to
5304 ## find X at run-time.
5305 ## When handled by cpp, this was in LD_SWITCH_SYSTEM. However, at the
5306 ## point where configure sourced the s/*.h file, LD_SWITCH_X_SITE_RPATH
5307 ## had not yet been defined and was expanded to null. Hence LD_SWITCH_SYSTEM
5308 ## had different values in configure (in ac_link) and src/Makefile.in.
5309 ## It seems clearer therefore to put this piece in LD_SWITCH_SYSTEM_TEMACS.
5310 gnu*) LD_SWITCH_SYSTEM_TEMACS="\$(LD_SWITCH_X_SITE_RPATH)" ;;
5313 ## Is it any better under MinGW64 to relocate emacs into higher addresses?
5314 case "$canonical" in
5315 x86_64-*-*) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x400000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5316 *) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x01000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5320 *) LD_SWITCH_SYSTEM_TEMACS= ;;
5323 # -no-pie or -nopie fixes a temacs segfault on Gentoo, OpenBSD,
5324 # Ubuntu, and other systems with "hardened" GCC configurations for
5325 # some reason (Bug#18784). We don't know why this works, but not
5326 # segfaulting is better than segfaulting. Use ac_c_werror_flag=yes
5327 # when trying the option, otherwise clang keeps warning that it does
5328 # not understand it, and pre-4.6 GCC has a similar problem
5329 # (Bug#20338). Prefer -no-pie to -nopie, as -no-pie is the
5330 # spelling used by GCC 6.1.0 and later (Bug#24682).
5332 [for $CC option to disable position independent executables],
5333 [emacs_cv_prog_cc_no_pie],
5334 [emacs_save_c_werror_flag=$ac_c_werror_flag
5335 emacs_save_LDFLAGS=$LDFLAGS
5336 ac_c_werror_flag=yes
5337 for emacs_cv_prog_cc_no_pie in -no-pie -nopie no; do
5338 test $emacs_cv_prog_cc_no_pie = no && break
5339 LDFLAGS="$emacs_save_LDFLAGS $emacs_cv_prog_cc_no_pie"
5340 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [break])
5342 ac_c_werror_flag=$emacs_save_c_werror_flag
5343 LDFLAGS=$emacs_save_LDFLAGS])
5344 if test "$emacs_cv_prog_cc_no_pie" != no; then
5345 LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS $emacs_cv_prog_cc_no_pie"
5348 if test x$ac_enable_profiling != x ; then
5350 *freebsd | gnu-linux) ;;
5351 *) LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -pg" ;;
5355 LD_SWITCH_SYSTEM_TEMACS="$LDFLAGS_NOCOMBRELOC $LD_SWITCH_SYSTEM_TEMACS"
5357 AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
5359 ## Common for all window systems
5360 if test "$window_system" != "none"; then
5361 AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])
5362 AC_DEFINE(POLL_FOR_INPUT, 1, [Define if you poll periodically to detect C-g.])
5363 WINDOW_SYSTEM_OBJ="fontset.o fringe.o image.o"
5366 AC_SUBST(WINDOW_SYSTEM_OBJ)
5368 AH_TOP([/* GNU Emacs site configuration template file.
5370 Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2017
5371 Free Software Foundation, Inc.
5373 This file is part of GNU Emacs.
5375 GNU Emacs is free software: you can redistribute it and/or modify
5376 it under the terms of the GNU General Public License as published by
5377 the Free Software Foundation, either version 3 of the License, or (at
5378 your option) any later version.
5380 GNU Emacs is distributed in the hope that it will be useful,
5381 but WITHOUT ANY WARRANTY; without even the implied warranty of
5382 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5383 GNU General Public License for more details.
5385 You should have received a copy of the GNU General Public License
5386 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
5389 /* No code in Emacs #includes config.h twice, but some bits of code
5390 intended to work with other packages as well (like gmalloc.c)
5391 think they can include it as many times as they like. */
5392 #ifndef EMACS_CONFIG_H
5393 #define EMACS_CONFIG_H
5396 AH_BOTTOM([#include <conf_post.h>
5398 #endif /* EMACS_CONFIG_H */
5407 #### Report on what we decided to do.
5408 #### Report GTK as a toolkit, even if it doesn't use Xt.
5409 #### It makes printing result more understandable as using GTK sets
5410 #### toolkit_scroll_bars to yes by default.
5411 if test "${HAVE_GTK}" = "yes"; then
5412 USE_X_TOOLKIT="$USE_GTK_TOOLKIT"
5415 if test $USE_ACL -ne 0; then
5416 ACL_SUMMARY="yes $LIB_ACL"
5421 emacs_standard_dirs='Standard dirs'
5423 Configured for '${canonical}'.
5425 Where should the build process find the source code? ${srcdir}
5426 What compiler should emacs be built with? ${CC} ${CFLAGS}
5427 Should Emacs use the GNU version of malloc? ${GNU_MALLOC}${GNU_MALLOC_reason}
5428 Should Emacs use a relocating allocator for buffers? ${REL_ALLOC}
5429 Should Emacs use mmap(2) for buffer allocation? $use_mmap_for_buffers
5430 What window system should Emacs use? ${window_system}
5431 What toolkit should Emacs use? ${USE_X_TOOLKIT}
5432 Where do we find X Windows header files? ${x_includes:-$emacs_standard_dirs}
5433 Where do we find X Windows libraries? ${x_libraries:-$emacs_standard_dirs}"])
5436 emacs_config_features=
5437 for opt in XAW3D XPM JPEG TIFF GIF PNG RSVG CAIRO IMAGEMAGICK SOUND GPM DBUS \
5438 GCONF GSETTINGS NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT \
5439 LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS X_TOOLKIT OLDXMENU X11 NS MODULES \
5440 XWIDGETS LIBSYSTEMD CANNOT_DUMP; do
5443 CANNOT_DUMP) eval val=\${$opt} ;;
5444 NOTIFY|ACL) eval val=\${${opt}_SUMMARY} ;;
5445 TOOLKIT_SCROLL_BARS|X_TOOLKIT) eval val=\${USE_$opt} ;;
5446 *) eval val=\${HAVE_$opt} ;;
5449 xno|xnone|x) continue ;;
5454 GTK*|LUCID|MOTIF) opt=$val ;;
5459 AS_VAR_APPEND([emacs_config_features], ["$optsep$opt"])
5462 AC_DEFINE_UNQUOTED(EMACS_CONFIG_FEATURES, "${emacs_config_features}",
5463 [Summary of some of the main features enabled by configure.])
5465 AS_ECHO([" Does Emacs use -lXaw3d? ${HAVE_XAW3D}
5466 Does Emacs use -lXpm? ${HAVE_XPM}
5467 Does Emacs use -ljpeg? ${HAVE_JPEG}
5468 Does Emacs use -ltiff? ${HAVE_TIFF}
5469 Does Emacs use a gif library? ${HAVE_GIF} $LIBGIF
5470 Does Emacs use a png library? ${HAVE_PNG} $LIBPNG
5471 Does Emacs use -lrsvg-2? ${HAVE_RSVG}
5472 Does Emacs use cairo? ${HAVE_CAIRO}
5473 Does Emacs use imagemagick (version 6)? ${HAVE_IMAGEMAGICK}
5474 Does Emacs support sound? ${HAVE_SOUND}
5475 Does Emacs use -lgpm? ${HAVE_GPM}
5476 Does Emacs use -ldbus? ${HAVE_DBUS}
5477 Does Emacs use -lgconf? ${HAVE_GCONF}
5478 Does Emacs use GSettings? ${HAVE_GSETTINGS}
5479 Does Emacs use a file notification library? ${NOTIFY_SUMMARY}
5480 Does Emacs use access control lists? ${ACL_SUMMARY}
5481 Does Emacs use -lselinux? ${HAVE_LIBSELINUX}
5482 Does Emacs use -lgnutls? ${HAVE_GNUTLS}
5483 Does Emacs use -lxml2? ${HAVE_LIBXML2}
5484 Does Emacs use -lfreetype? ${HAVE_FREETYPE}
5485 Does Emacs use -lm17n-flt? ${HAVE_M17N_FLT}
5486 Does Emacs use -lotf? ${HAVE_LIBOTF}
5487 Does Emacs use -lxft? ${HAVE_XFT}
5488 Does Emacs use -lsystemd? ${HAVE_LIBSYSTEMD}
5489 Does Emacs directly use zlib? ${HAVE_ZLIB}
5490 Does Emacs have dynamic modules support? ${HAVE_MODULES}
5491 Does Emacs use toolkit scroll bars? ${USE_TOOLKIT_SCROLL_BARS}
5492 Does Emacs support Xwidgets (requires gtk3)? ${HAVE_XWIDGETS}
5493 Does Emacs have threading support in lisp? ${threads_enabled}
5496 if test -n "${EMACSDATA}"; then
5497 AS_ECHO([" Environment variable EMACSDATA set to: $EMACSDATA"])
5499 if test -n "${EMACSDOC}"; then
5500 AS_ECHO([" Environment variable EMACSDOC set to: $EMACSDOC"])
5505 if test "$HAVE_NS" = "yes"; then
5507 AS_ECHO(["You must run \"${MAKE-make} install\" in order to test the built application.
5508 The installed application will go to nextstep/Emacs.app and can be
5509 run or moved from there."])
5510 if test "$EN_NS_SELF_CONTAINED" = "yes"; then
5511 echo "The application will be fully self-contained."
5513 AS_ECHO(["The lisp resources for the application will be installed under ${prefix}.
5514 You may need to run \"${MAKE-make} install\" with sudo. The application will fail
5515 to run if these resources are not installed."])
5520 case $opsys,$emacs_uname_r in
5522 AC_MSG_WARN([[building Emacs on Cygwin 1.5 is not supported.]])
5527 # Remove any trailing slashes in these variables.
5529 */) prefix=`AS_DIRNAME(["$prefix."])`;;
5531 case $exec_prefix in
5532 */) exec_prefix=`AS_DIRNAME(["$exec_prefix."])`;;
5535 if test "$HAVE_NS" = "yes"; then
5536 if test "$NS_IMPL_GNUSTEP" = yes; then
5537 AC_CONFIG_FILES([nextstep/GNUstep/Emacs.base/Resources/Info-gnustep.plist:nextstep/templates/Info-gnustep.plist.in \
5538 nextstep/GNUstep/Emacs.base/Resources/Emacs.desktop:nextstep/templates/Emacs.desktop.in])
5539 ns_check_file=Resources/Info-gnustep.plist
5541 AC_CONFIG_FILES([nextstep/Cocoa/Emacs.base/Contents/Info.plist:nextstep/templates/Info.plist.in \
5542 nextstep/Cocoa/Emacs.base/Contents/Resources/English.lproj/InfoPlist.strings:nextstep/templates/InfoPlist.strings.in])
5543 ns_check_file=Contents/Info.plist
5545 AC_SUBST(ns_check_file)
5548 AC_CONFIG_FILES([Makefile lib/gnulib.mk])
5550 dnl config.status treats $srcdir specially, so I think this is ok...
5551 AC_CONFIG_FILES([$srcdir/doc/man/emacs.1])
5553 m4_define([subdir_makefiles],
5554 [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])
5555 SUBDIR_MAKEFILES="subdir_makefiles"
5556 AC_CONFIG_FILES(subdir_makefiles)
5558 dnl test/ is not present in release tarfiles.
5559 opt_makefile=test/Makefile
5561 if test -f "$srcdir/$opt_makefile.in"; then
5562 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
5563 dnl Again, it's best not to use a variable. Though you can add
5564 dnl ", [], [opt_makefile='$opt_makefile']" and it should work.
5565 AC_CONFIG_FILES([test/Makefile])
5569 dnl The admin/ directory used to be excluded from tarfiles.
5570 if test -d $srcdir/admin; then
5571 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES admin/charsets/Makefile admin/unidata/Makefile admin/grammars/Makefile"
5572 AC_CONFIG_FILES([admin/charsets/Makefile])
5573 AC_CONFIG_FILES([admin/unidata/Makefile])
5574 AC_CONFIG_FILES([admin/grammars/Makefile])
5578 SUBDIR_MAKEFILES_IN=`echo " ${SUBDIR_MAKEFILES}" | sed -e 's| | $(srcdir)/|g' -e 's|Makefile|Makefile.in|g'`
5580 AC_SUBST(SUBDIR_MAKEFILES_IN)
5582 dnl You might wonder (I did) why epaths.h is generated by running make,
5583 dnl rather than just letting configure generate it from epaths.in.
5584 dnl One reason is that the various paths are not fully expanded (see above);
5585 dnl e.g., gamedir='${localstatedir}/games/emacs'.
5586 dnl Secondly, the GNU Coding standards require that one should be able
5587 dnl to run 'make prefix=/some/where/else' and override the values set
5588 dnl by configure. This also explains the 'move-if-change' test and
5589 dnl the use of force in the 'epaths-force' rule in Makefile.in.
5590 AC_CONFIG_COMMANDS([src/epaths.h], [
5591 if test "${opsys}" = "mingw32"; then
5592 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force-w32
5594 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force
5595 fi || AC_MSG_ERROR(['src/epaths.h' could not be made.])
5596 ], [GCC="$GCC" CPPFLAGS="$CPPFLAGS" opsys="$opsys"])
5598 dnl NB we have to cheat and use the ac_... version because abs_top_srcdir
5599 dnl is not yet set, sigh. Or we could use ../$srcdir/src/.gdbinit,
5601 AC_CONFIG_COMMANDS([src/.gdbinit], [
5602 if test ! -f src/.gdbinit && test -f "$srcdir/src/.gdbinit"; then
5603 AS_ECHO(["source $ac_abs_top_srcdir/src/.gdbinit"]) > src/.gdbinit
5607 dnl Perhaps this would be better named doc-emacs-emacsver.texi?
5608 dnl See comments for etc-refcards-emacsver.tex.
5609 dnl Since we get a doc/emacs directory generated anyway, for the Makefile,
5610 dnl it is not quite the same. But we are generating in $srcdir.
5611 AC_CONFIG_COMMANDS([doc/emacs/emacsver.texi], [
5612 ${MAKE-make} -s --no-print-directory -C doc/emacs doc-emacsver || \
5613 AC_MSG_ERROR(['doc/emacs/emacsver.texi' could not be made.])
5616 dnl If we give this the more natural name, etc/refcards/emacsver.texi,
5617 dnl then a directory etc/refcards is created in the build directory,
5618 dnl which is probably harmless, but confusing (in out-of-tree builds).
5619 dnl (If we were to generate etc/refcards/Makefile, this might change.)
5620 dnl It is really $srcdir/etc/refcards/emacsver.tex that we generate.
5621 AC_CONFIG_COMMANDS([etc-refcards-emacsver.tex], [
5622 ${MAKE-make} -s MAKEFILE_NAME=do-not-make-Makefile etc-emacsver || \
5623 AC_MSG_ERROR(['etc/refcards/emacsver.tex' could not be made.])
5626 if test $AUTO_DEPEND = yes; then
5627 for dir in $AUTODEPEND_PARENTS; do
5628 AS_MKDIR_P([$dir/deps])
5634 if test ! "$with_mailutils"; then
5635 if test "$with_pop" = yes; then
5636 AC_MSG_WARN([This configuration installs a 'movemail' program
5637 that retrieves POP3 email via only insecure channels.
5638 To omit insecure POP3, you can use '$0 --without-pop'.])
5643 # Don't suggest GNU Mailutils, as it hasn't been ported.
5646 emacs_fix_movemail="use '$0 --with-mailutils'"
5647 case `(movemail --version) 2>/dev/null` in
5649 *) emacs_fix_movemail="install GNU Mailutils
5650 <http://mailutils.org> and $emacs_fix_movemail";;
5652 AC_MSG_NOTICE([You might want to $emacs_fix_movemail.]);;
5656 test "$MAKE" = make || AC_MSG_NOTICE([Now you can run '$MAKE'.])