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 # These cause too much noise in the MinGW build
980 if test $opsys = mingw32; then
981 nw="$nw -Wpointer-sign"
982 nw="$nw -Wsuggest-attribute=format"
985 gl_MANYWARN_ALL_GCC([ws])
986 gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
990 gl_WARN_ADD([-Wredundant-decls]) # Prefer this, as we don't use Bison.
991 gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
992 gl_WARN_ADD([-Wno-override-init]) # More trouble than it is worth
993 gl_WARN_ADD([-Wno-sign-compare]) # Too many warnings for now
994 gl_WARN_ADD([-Wno-type-limits]) # Too many warnings for now
995 gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
996 gl_WARN_ADD([-Wno-format-nonliteral])
998 # clang is unduly picky about braces.
999 if test "$emacs_cv_clang" = yes; then
1000 gl_WARN_ADD([-Wno-missing-braces])
1003 # This causes too much noise in the MinGW build
1004 if test $opsys = mingw32; then
1005 gl_WARN_ADD([-Wno-pointer-sign])
1008 AC_DEFINE([GCC_LINT], [1], [Define to 1 if --enable-gcc-warnings.])
1009 AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
1010 AH_VERBATIM([GNULIB_PORTCHECK_FORTIFY_SOURCE],
1011 [/* Enable compile-time and run-time bounds-checking, and some warnings,
1012 without upsetting glibc 2.15+. */
1013 #if (defined GNULIB_PORTCHECK && !defined _FORTIFY_SOURCE \
1014 && defined __OPTIMIZE__ && __OPTIMIZE__)
1015 # define _FORTIFY_SOURCE 2
1020 # clang is picky about these regardless of whether
1021 # --enable-gcc-warnings is specified.
1022 if test "$emacs_cv_clang" = yes; then
1023 gl_WARN_ADD([-Wno-initializer-overrides])
1024 gl_WARN_ADD([-Wno-tautological-compare])
1025 gl_WARN_ADD([-Wno-tautological-constant-out-of-range-compare])
1028 # Use a slightly smaller set of warning options for lib/.
1030 nw="$nw -Wunused-macros"
1031 gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
1033 AC_SUBST([WERROR_CFLAGS])
1034 AC_SUBST([GNULIB_WARN_CFLAGS])
1043 AC_ARG_ENABLE(link-time-optimization,
1044 [AS_HELP_STRING([--enable-link-time-optimization],
1045 [build with link-time optimization
1046 (experimental; see INSTALL)])],
1047 if test "${enableval}" != "no"; then
1049 if test "$emacs_cv_clang" = yes; then
1050 AC_MSG_CHECKING([whether link-time optimization is supported by clang])
1051 GOLD_PLUGIN=`$CC -print-file-name=LLVMgold.so 2>/dev/null`
1052 if test -x "$GOLD_PLUGIN"; then
1055 elif test x$GCC = xyes; then
1056 AC_MSG_CHECKING([whether link-time optimization is supported by gcc])
1057 CPUS=`getconf _NPROCESSORS_ONLN 2>/dev/null`
1058 if test x$CPUS != x; then
1064 AC_MSG_ERROR([Link-time optimization is not supported with your compiler.])
1066 if test -z "$LTO"; then
1070 CFLAGS="$CFLAGS $LTO"
1071 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1072 [ac_lto_supported=yes], [ac_lto_supported=no])
1073 CFLAGS="$old_CFLAGS"
1075 AC_MSG_RESULT([$ac_lto_supported])
1076 if test "$ac_lto_supported" = "yes"; then
1077 CFLAGS="$CFLAGS $LTO"
1078 if test "$emacs_cv_clang" = yes; then
1079 AC_MSG_WARN([Please read INSTALL before using link-time optimization with clang])
1080 # WARNING: 'ar --plugin ...' doesn't work without
1081 # command, so plugin name is appended to ARFLAGS.
1082 ARFLAGS="cru --plugin $GOLD_PLUGIN"
1083 RANLIB="$RANLIB --plugin $GOLD_PLUGIN"
1085 dnl The following is needed for GCC 4.9.0. The GCC 4.9.0 release notes
1086 dnl suggest that instead of -ffat-lto-objects we should use gcc-ar and
1087 dnl gcc-ranlib in place of ar and ranlib, but gcc-ar makes /usr/bin/ar
1088 dnl dump core on Fedora 20, so play it safe for now.
1089 gl_COMPILER_OPTION_IF([-ffat-lto-objects],
1090 [CFLAGS="$CFLAGS -ffat-lto-objects"])
1096 dnl Automake replacements.
1097 AC_DEFUN([AM_CONDITIONAL],
1101 dnl Prefer silent make output. For verbose output, use
1102 dnl 'configure --disable-silent-rules' or 'make V=1' .
1103 dnl This code is adapted from Automake.
1104 dnl Although it can be simplified now that GNU Make is assumed,
1105 dnl the simplification hasn't been done yet.
1106 AC_ARG_ENABLE([silent-rules],
1108 [--disable-silent-rules],
1109 [verbose build output (undo: "make V=0")])])
1110 if test "$enable_silent_rules" = no; then
1111 AM_DEFAULT_VERBOSITY=1
1113 AM_DEFAULT_VERBOSITY=0
1116 AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
1118 AC_SUBST([AM_DEFAULT_V])
1119 AC_SUBST([AM_DEFAULT_VERBOSITY])
1121 dnl Some other nice autoconf tests.
1123 dnl These are commented out, since gl_EARLY and/or Autoconf already does them.
1125 dnl if test "x$RANLIB" = x; then
1130 dnl Sadly, AC_PROG_LN_S is too restrictive. It also tests whether links
1131 dnl can be made to directories. This is not relevant for our usage, and
1132 dnl excludes some cases that work fine for us. Eg MS Windows or files
1133 dnl hosted on AFS, both examples where simple links work, but links to
1134 dnl directories fail. We use a cut-down version instead.
1137 AC_CACHE_CHECK([command to symlink files in the same directory], [emacs_cv_ln_s_fileonly],
1138 [rm -f conf$$ conf$$.file
1140 emacs_cv_ln_s_fileonly='cp -p'
1142 dnl On MinGW, ensure we will call the MSYS /bin/ln.exe, not some
1143 dnl random program in the current directory.
1144 if (echo >conf$$.file) 2>/dev/null; then
1145 if ln -s conf$$.file conf$$ 2>/dev/null; then
1146 if test "$opsys" = "mingw32"; then
1147 emacs_cv_ln_s_fileonly='/bin/ln -s'
1149 emacs_cv_ln_s_fileonly='ln -s'
1151 elif ln conf$$.file conf$$ 2>/dev/null; then
1152 if test "$opsys" = "mingw32"; then
1153 emacs_cv_ln_s_fileonly=/bin/ln
1155 emacs_cv_ln_s_fileonly=ln
1160 rm -f conf$$ conf$$.file])
1161 LN_S_FILEONLY=$emacs_cv_ln_s_fileonly
1163 AC_SUBST(LN_S_FILEONLY)
1166 dnl AC_PROG_LN_S sets LN_S to 'cp -pR' for MinGW, on the premise that 'ln'
1167 dnl doesn't support links to directories, as in "ln file dir". But that
1168 dnl use is non-portable, and OTOH MinGW wants to use hard links for Emacs
1169 dnl executables at "make install" time.
1170 dnl See http://lists.gnu.org/archive/html/emacs-devel/2013-04/msg00475.html
1171 dnl for more details.
1172 if test "$opsys" = "mingw32"; then
1176 dnl On some Debian versions, "install-info" prints irritating messages
1177 dnl "This is not dpkg install-info anymore, but GNU install-info"
1178 dnl if called via an absolute file name.
1179 dnl Use the entirely-identical-but-quieter ginstall-info instead if present.
1180 dnl Sadly some people may have an old ginstall-info installed on
1181 dnl non-Debian systems, so we can't use this.
1182 dnl AC_PATH_PROGS(INSTALL_INFO, [ginstall-info install-info], :,
1183 dnl $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1185 AC_PATH_PROG(INSTALL_INFO, install-info, :,
1186 $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1187 dnl Don't use GZIP, which is used by gzip for additional parameters.
1188 AC_PATH_PROG(GZIP_PROG, gzip)
1190 test $with_compress_install != yes && test -n "$GZIP_PROG" && \
1191 GZIP_PROG=" # $GZIP_PROG # (disabled by configure --without-compress-install)"
1193 AC_CACHE_CHECK([for 'find' args to delete a file],
1194 [emacs_cv_find_delete],
1195 [if touch conftest.tmp && find conftest.tmp -delete 2>/dev/null &&
1196 test ! -f conftest.tmp
1197 then emacs_cv_find_delete="-delete"
1198 else emacs_cv_find_delete="-exec rm -f {} ';'"
1200 FIND_DELETE=$emacs_cv_find_delete
1201 AC_SUBST([FIND_DELETE])
1205 if test $opsys = gnu-linux; then
1206 if test "${SETFATTR+set}" != set; then
1207 AC_CACHE_CHECK([for setfattr],
1208 [emacs_cv_prog_setfattr],
1210 if (setfattr -n user.pax.flags conftest.tmp) >/dev/null 2>&1; then
1211 emacs_cv_prog_setfattr=yes
1213 emacs_cv_prog_setfattr=no
1215 if test "$emacs_cv_prog_setfattr" = yes; then
1216 PAXCTL_notdumped='$(SETFATTR) -n user.pax.flags -v er'
1222 AC_SUBST([SETFATTR])
1225 case $opsys,$PAXCTL_notdumped,$emacs_uname_r in
1226 gnu-linux,,* | netbsd,,[0-7].*)
1227 AC_PATH_PROG([PAXCTL], [paxctl], [],
1228 [$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR/usr/sbin])
1229 if test -n "$PAXCTL"; then
1230 if test "$opsys" = netbsd; then
1231 PAXCTL_dumped='$(PAXCTL) +a'
1232 PAXCTL_notdumped=$PAXCTL_dumped
1234 AC_MSG_CHECKING([whether binaries have a PT_PAX_FLAGS header])
1235 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1236 [if $PAXCTL -v conftest$EXEEXT >/dev/null 2>&1; then
1237 AC_MSG_RESULT([yes])
1242 if test -n "$PAXCTL"; then
1243 PAXCTL_dumped='$(PAXCTL) -zex'
1244 PAXCTL_notdumped='$(PAXCTL) -r'
1249 AC_SUBST([PAXCTL_dumped])
1250 AC_SUBST([PAXCTL_notdumped])
1252 ## Require makeinfo >= 4.13 (last of the 4.x series) to build the manuals.
1253 if test "${MAKEINFO:=makeinfo}" != "no"; then
1254 case `($MAKEINFO --version) 2>/dev/null` in
1255 *' (GNU texinfo) '4.1[[3-9]]* | \
1256 *' (GNU texinfo) '[[5-9]]* | \
1257 *' (GNU texinfo) '[[1-9][0-9]]* ) ;;
1262 ## Makeinfo is unusual. For a released Emacs, the manuals are
1263 ## pre-built, and not deleted by the normal clean rules. makeinfo is
1264 ## therefore in the category of "special tools" not normally required, which
1265 ## configure does not have to check for (eg autoconf itself).
1266 ## In a repository checkout on the other hand, the manuals are not included.
1267 ## So makeinfo is a requirement to build from the repository, and configure
1268 ## should test for it as it does for any other build requirement.
1269 ## We use the presence of $srcdir/info/emacs to distinguish a release,
1270 ## with pre-built manuals, from a repository checkout.
1273 if test "$MAKEINFO" = "no"; then
1275 if test "x${with_makeinfo}" = "xno"; then
1277 elif test ! -e "$srcdir/info/emacs" && test ! -e "$srcdir/info/emacs.info"; then
1278 AC_MSG_ERROR( [You do not seem to have makeinfo >= 4.13, and your
1279 source tree does not seem to have pre-built manuals in the 'info' directory.
1280 Either install a suitable version of makeinfo, or re-run configure
1281 with the '--without-makeinfo' option to build without the manuals.] )
1284 AC_SUBST([MAKEINFO])
1285 AC_SUBST(HAVE_MAKEINFO)
1287 if test $opsys = mingw32; then
1288 DOCMISC_W32=efaq-w32
1292 AC_SUBST(DOCMISC_W32)
1294 dnl Add our options to ac_link now, after it is set up.
1296 if test x$GCC = xyes; then
1297 test "x$GCC_LINK_TEST_OPTIONS" != x && \
1298 ac_link="$ac_link $GCC_LINK_TEST_OPTIONS"
1300 test "x$NON_GCC_LINK_TEST_OPTIONS" != x && \
1301 ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
1304 dnl We need -znocombreloc if we're using a relatively recent GNU ld.
1305 dnl If we can link with the flag, it shouldn't do any harm anyhow.
1306 dnl Treat GCC specially since it just gives a non-fatal 'unrecognized option'
1307 dnl if not built to support GNU ld.
1309 dnl For a long time, -znocombreloc was added to LDFLAGS rather than
1310 dnl LD_SWITCH_SYSTEM_TEMACS. That is:
1311 dnl * inappropriate, as LDFLAGS is a user option but this is essential.
1312 dnl Eg "make LDFLAGS=... all" could run into problems,
1313 dnl http://bugs.debian.org/684788
1314 dnl * unnecessary, since temacs is the only thing that actually needs it.
1315 dnl Indeed this is where it was originally, prior to:
1316 dnl http://lists.gnu.org/archive/html/emacs-pretest-bug/2004-03/msg00170.html
1317 if test x$GCC = xyes; then
1318 LDFLAGS_NOCOMBRELOC="-Wl,-znocombreloc"
1320 LDFLAGS_NOCOMBRELOC="-znocombreloc"
1323 AC_CACHE_CHECK([for -znocombreloc], [emacs_cv_znocombreloc],
1324 [late_LDFLAGS="$LDFLAGS"
1325 LDFLAGS="$LDFLAGS $LDFLAGS_NOCOMBRELOC"
1327 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1328 [emacs_cv_znocombreloc=yes], [emacs_cv_znocombreloc=no])
1330 LDFLAGS="$late_LDFLAGS"])
1332 if test x$emacs_cv_znocombreloc = xno; then
1333 LDFLAGS_NOCOMBRELOC=
1337 AC_CACHE_CHECK([whether addresses are sanitized],
1338 [emacs_cv_sanitize_address],
1341 [[#ifndef __has_feature
1342 #define __has_feature(f) 0
1344 #if defined __SANITIZE_ADDRESS__ || __has_feature (address_sanitizer)
1346 error "Addresses are not sanitized.";
1349 [emacs_cv_sanitize_address=yes],
1350 [emacs_cv_sanitize_address=no])])
1352 dnl The function dump-emacs will not be defined and temacs will do
1353 dnl (load "loadup") automatically unless told otherwise.
1354 test "x$CANNOT_DUMP" = "x" && CANNOT_DUMP=no
1356 nacl) CANNOT_DUMP=yes ;;
1359 if test "$CANNOT_DUMP" = "yes"; then
1360 AC_DEFINE(CANNOT_DUMP, 1, [Define if Emacs cannot be dumped on your system.])
1361 elif test "$emacs_cv_sanitize_address" = yes; then
1362 AC_MSG_WARN([[Addresses are sanitized; suggest CANNOT_DUMP=yes]])
1365 AC_SUBST(CANNOT_DUMP)
1368 UNEXEC_OBJ=unexelf.o
1370 # MSDOS uses unexcoff.o
1372 UNEXEC_OBJ=unexaix.o
1378 UNEXEC_OBJ=unexmacosx.o
1381 UNEXEC_OBJ=unexhp9k800.o
1384 UNEXEC_OBJ=unexw32.o
1387 # Use the Solaris dldump() function, called from unexsol.c, to dump
1388 # emacs, instead of the generic ELF dump code found in unexelf.c.
1389 # The resulting binary has a complete symbol table, and is better
1390 # for debugging and other observability tools (debuggers, pstack, etc).
1392 # If you encounter a problem using dldump(), please consider sending
1393 # a message to the OpenSolaris tools-linking mailing list:
1394 # http://mail.opensolaris.org/mailman/listinfo/tools-linking
1396 # It is likely that dldump() works with older Solaris too, but this has
1397 # not been tested, so for now this change is for Solaris 10 or newer.
1398 UNEXEC_OBJ=unexsol.o
1401 test "$CANNOT_DUMP" = "yes" && UNEXEC_OBJ=
1406 ## Let 'ld' find image libs and similar things in /usr/local/lib.
1407 ## The system compiler, GCC, has apparently been modified to not
1408 ## look there, contrary to what a stock GCC would do.
1409 ### It's not our place to do this. See bug#10313#17.
1410 ### LD_SWITCH_SYSTEM=-L/usr/local/lib
1415 ## cpp test was "ifdef __mips__", but presumably this is equivalent...
1416 case $host_cpu in mips*) LD_SWITCH_SYSTEM="-G 0";; esac
1420 ### It's not our place to do this. See bug#10313#17.
1421 ### LD_SWITCH_SYSTEM="-Wl,-rpath,/usr/pkg/lib -L/usr/pkg/lib -Wl,-rpath,/usr/local/lib -L/usr/local/lib"
1426 ## Han Boetes <han@boetes.org> says this is necessary,
1427 ## otherwise Emacs dumps core on elf systems.
1428 LD_SWITCH_SYSTEM="-Z"
1431 AC_SUBST(LD_SWITCH_SYSTEM)
1433 ac_link="$ac_link $LD_SWITCH_SYSTEM"
1435 ## This setting of LD_SWITCH_SYSTEM references LD_SWITCH_X_SITE_RPATH,
1436 ## which has not been defined yet. When this was handled with cpp,
1437 ## it was expanded to null when configure sourced the s/*.h file.
1438 ## Thus LD_SWITCH_SYSTEM had different values in configure and the Makefiles.
1439 ## FIXME it would be cleaner to put this in LD_SWITCH_SYSTEM_TEMACS
1440 ## (or somesuch), but because it is supposed to go at the _front_
1441 ## of LD_SWITCH_SYSTEM, we cannot do that in exactly the same way.
1442 ## Compare with the gnu-linux case below, which added to the end
1443 ## of LD_SWITCH_SYSTEM, and so can instead go at the front of
1444 ## LD_SWITCH_SYSTEM_TEMACS.
1447 LD_SWITCH_SYSTEM="\$(LD_SWITCH_X_SITE_RPATH) $LD_SWITCH_SYSTEM" ;;
1454 AC_CHECK_DECL([__ELF__])
1455 if test "$ac_cv_have_decl___ELF__" = "yes"; then
1456 ## With ELF, make sure that all common symbols get allocated to in the
1457 ## data section. Otherwise, the dump of temacs may miss variables in
1458 ## the shared library that have been initialized. For example, with
1459 ## GNU libc, __malloc_initialized would normally be resolved to the
1460 ## shared library's .bss section, which is fatal.
1461 if test "x$GCC" = "xyes"; then
1462 C_SWITCH_MACHINE="-fno-common"
1464 AC_MSG_ERROR([Non-GCC compilers are not supported.])
1467 dnl This was the unexalpha.c case. Removed in 24.1, 2010-07-24,
1468 dnl albeit under the mistaken assumption that said file
1469 dnl was no longer used.
1470 AC_MSG_ERROR([Non-ELF systems are not supported since Emacs 24.1.])
1474 AC_SUBST(C_SWITCH_MACHINE)
1476 AC_SUBST(UNEXEC_OBJ)
1479 ## Some programs in src produce warnings saying certain subprograms
1480 ## are too complex and need a MAXMEM value greater than 2000 for
1481 ## additional optimization. --nils@exp-math.uni-essen.de
1482 test "$opsys" = "aix4.2" && test "x$GCC" != "xyes" && \
1483 C_SWITCH_SYSTEM="-ma -qmaxmem=4000"
1484 if test "$opsys" = "mingw32"; then
1485 case "$canonical" in
1486 x86_64-*-mingw*) C_SWITCH_SYSTEM="-mtune=generic" ;;
1487 *) C_SWITCH_SYSTEM="-mtune=pentium4" ;;
1490 ## gnu-linux might need -D_BSD_SOURCE on old libc5 systems.
1491 ## It is redundant in glibc2, since we define _GNU_SOURCE.
1492 AC_SUBST(C_SWITCH_SYSTEM)
1497 ## IBM's X11R5 uses -lIM and -liconv in AIX 3.2.2.
1498 aix4-2) LIBS_SYSTEM="-lrts -lIM -liconv" ;;
1500 freebsd|dragonfly) LIBS_SYSTEM="-lutil" ;;
1502 hpux*) LIBS_SYSTEM="-l:libdld.sl" ;;
1504 sol2*) LIBS_SYSTEM="-lsocket -lnsl" ;;
1506 ## Motif needs -lgen.
1507 unixware) LIBS_SYSTEM="-lsocket -lnsl -lelf -lgen" ;;
1510 AC_SUBST(LIBS_SYSTEM)
1512 ### Make sure subsequent tests use flags consistent with the build flags.
1514 if test x"${OVERRIDE_CPPFLAGS}" != x; then
1515 CPPFLAGS="${OVERRIDE_CPPFLAGS}"
1517 CPPFLAGS="$C_SWITCH_SYSTEM $C_SWITCH_MACHINE $CPPFLAGS"
1520 # Suppress obsolescent Autoconf test for size_t; Emacs assumes C99 or better.
1521 AC_DEFUN([AC_TYPE_SIZE_T])
1522 # Likewise for obsolescent test for uid_t, gid_t; Emacs assumes them.
1523 AC_DEFUN([AC_TYPE_UID_T])
1525 # sqrt and other floating-point functions such as fmod and frexp
1526 # are found in -lm on many systems.
1528 AC_SEARCH_LIBS([sqrt], [m])
1529 if test "X$LIBS" = "X$OLD_LIBS"; then
1532 LIB_MATH=$ac_cv_search_sqrt
1536 dnl Current possibilities handled by sed (aix4-2 -> aix,
1537 dnl gnu-linux -> gnu/linux, etc.):
1538 dnl gnu, gnu/linux, gnu/kfreebsd, aix, cygwin, darwin, hpux.
1539 dnl And special cases: berkeley-unix, usg-unix-v, ms-dos, windows-nt.
1540 SYSTEM_TYPE=`echo $opsys | sed -e 's/[[0-9]].*//' -e 's|-|/|'`
1547 ## Adding -lm confuses the dynamic linker, so omit it.
1550 freebsd | dragonfly )
1551 SYSTEM_TYPE=berkeley-unix
1553 gnu-linux | gnu-kfreebsd )
1555 hpux10-20 | hpux11 )
1559 SYSTEM_TYPE=windows-nt
1561 dnl NB this may be adjusted below.
1563 SYSTEM_TYPE=berkeley-unix
1567 SYSTEM_TYPE=usg-unix-v
1573 AC_DEFINE_UNQUOTED(SYSTEM_TYPE, "$SYSTEM_TYPE",
1574 [The type of system you are compiling for; sets 'system-type'.])
1575 AC_SUBST([SYSTEM_TYPE])
1578 pre_PKG_CONFIG_CFLAGS=$CFLAGS
1579 pre_PKG_CONFIG_LIBS=$LIBS
1581 PKG_PROG_PKG_CONFIG(0.9.0)
1583 dnl EMACS_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4)
1584 dnl acts like PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4,
1585 dnl HAVE_GSTUFF=yes, HAVE_GSTUFF=no) -- see pkg-config man page --
1586 dnl except that it postprocesses CFLAGS as needed for --enable-gcc-warnings.
1587 dnl EMACS_CHECK_MODULES accepts optional 3rd and 4th arguments that
1588 dnl can take the place of the default HAVE_GSTUFF=yes and HAVE_GSTUFF=no
1590 AC_DEFUN([EMACS_CHECK_MODULES],
1591 [PKG_CHECK_MODULES([$1], [$2],
1592 [$1_CFLAGS=`AS_ECHO(["$$1_CFLAGS"]) | sed -e "$edit_cflags"`
1593 m4_default([$3], [HAVE_$1=yes])],
1594 [m4_default([$4], [HAVE_$1=no])])])
1597 if test "${with_sound}" != "no"; then
1598 # Sound support for GNU/Linux, the free BSDs, MinGW, and Cygwin.
1599 AC_CHECK_HEADERS([machine/soundcard.h sys/soundcard.h soundcard.h mmsystem.h],
1600 have_sound_header=yes, [], [
1602 #define WIN32_LEAN_AND_MEAN
1603 #include <windows.h>
1606 test "${with_sound}" = "oss" && test "${have_sound_header}" != "yes" && \
1607 AC_MSG_ERROR([OSS sound support requested but not found.])
1609 if test "${with_sound}" = "bsd-ossaudio" || test "${with_sound}" = "yes"; then
1610 # Emulation library used on NetBSD.
1611 AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
1612 test "${with_sound}" = "bsd-ossaudio" && test -z "$LIBSOUND" && \
1613 AC_MSG_ERROR([bsd-ossaudio sound support requested but not found.])
1614 dnl FIXME? If we did find ossaudio, should we set with_sound=bsd-ossaudio?
1615 dnl Traditionally, we go on to check for alsa too. Does that make sense?
1619 if test "${with_sound}" = "alsa" || test "${with_sound}" = "yes"; then
1621 ALSA_MODULES="alsa >= $ALSA_REQUIRED"
1622 EMACS_CHECK_MODULES([ALSA], [$ALSA_MODULES])
1623 if test $HAVE_ALSA = yes; then
1624 SAVE_CFLAGS="$CFLAGS"
1626 CFLAGS="$ALSA_CFLAGS $CFLAGS"
1627 LIBS="$ALSA_LIBS $LIBS"
1628 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <asoundlib.h>]], [[snd_lib_error_set_handler (0);]])],
1629 emacs_alsa_normal=yes,
1630 emacs_alsa_normal=no)
1631 if test "$emacs_alsa_normal" != yes; then
1632 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <alsa/asoundlib.h>]],
1633 [[snd_lib_error_set_handler (0);]])],
1634 emacs_alsa_subdir=yes,
1635 emacs_alsa_subdir=no)
1636 if test "$emacs_alsa_subdir" != yes; then
1637 AC_MSG_ERROR([pkg-config found alsa, but it does not compile. See config.log for error messages.])
1639 ALSA_CFLAGS="$ALSA_CFLAGS -DALSA_SUBDIR_INCLUDE"
1642 CFLAGS="$SAVE_CFLAGS"
1644 LIBSOUND="$LIBSOUND $ALSA_LIBS"
1645 CFLAGS_SOUND="$CFLAGS_SOUND $ALSA_CFLAGS"
1646 AC_DEFINE(HAVE_ALSA, 1, [Define to 1 if ALSA is available.])
1647 elif test "${with_sound}" = "alsa"; then
1648 AC_MSG_ERROR([ALSA sound support requested but not found.])
1650 fi dnl with_sound = alsa|yes
1652 dnl Define HAVE_SOUND if we have sound support. We know it works and
1653 dnl compiles only on the specified platforms. For others, it
1654 dnl probably doesn't make sense to try.
1655 dnl FIXME So surely we should bypass this whole section if not using
1656 dnl one of these platforms?
1657 if test x$have_sound_header = xyes || test $HAVE_ALSA = yes; then
1659 dnl defined __FreeBSD__ || defined __NetBSD__ || defined __linux__
1660 dnl Adjust the --with-sound help text if you change this.
1661 gnu-linux|freebsd|netbsd|mingw32|cygwin)
1662 AC_DEFINE(HAVE_SOUND, 1, [Define to 1 if you have sound support.])
1668 AC_SUBST(CFLAGS_SOUND)
1671 dnl checks for header files
1672 AC_CHECK_HEADERS_ONCE(
1679 sys/utsname.h pwd.h utmp.h util.h sys/prctl.h)
1681 AC_CACHE_CHECK([for ADDR_NO_RANDOMIZE],
1682 [emacs_cv_personality_addr_no_randomize],
1684 [AC_LANG_PROGRAM([[#include <sys/personality.h>]],
1685 [[personality (personality (0xffffffff)
1686 | ADDR_NO_RANDOMIZE)]])],
1687 [emacs_cv_personality_addr_no_randomize=yes],
1688 [emacs_cv_personality_addr_no_randomize=no])])
1689 if test $emacs_cv_personality_addr_no_randomize = yes; then
1690 AC_DEFINE([HAVE_PERSONALITY_ADDR_NO_RANDOMIZE], [1],
1691 [Define to 1 if personality flag ADDR_NO_RANDOMIZE exists.])
1694 # Note that Solaris has sys/sysinfo.h which defines struct
1695 # sysinfo as well. To make sure that we're using GNU/Linux
1696 # sysinfo, we explicitly set one of its fields.
1697 if test "$ac_cv_header_sys_sysinfo_h" = yes; then
1698 AC_CACHE_CHECK([if Linux sysinfo may be used], [emacs_cv_linux_sysinfo],
1699 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1700 [[struct sysinfo si;
1703 emacs_cv_linux_sysinfo=yes, emacs_cv_linux_sysinfo=no)])
1705 if test $emacs_cv_linux_sysinfo = yes; then
1706 AC_DEFINE([HAVE_LINUX_SYSINFO], 1, [Define to 1 if you have Linux sysinfo function.])
1707 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1708 [[struct sysinfo si; return si.mem_unit]])],
1709 AC_DEFINE(LINUX_SYSINFO_UNIT, 1,
1710 [Define to 1 if Linux sysinfo sizes are in multiples of mem_unit bytes.]))
1714 dnl On Solaris 8 there's a compilation warning for term.h because
1715 dnl it doesn't define 'bool'.
1716 AC_CHECK_HEADERS(term.h, , , -)
1718 AC_CHECK_DECLS([sys_siglist], [], [], [[#include <signal.h>
1720 if test $ac_cv_have_decl_sys_siglist != yes; then
1721 # For Tru64, at least:
1722 AC_CHECK_DECLS([__sys_siglist], [], [], [[#include <signal.h>
1727 AC_CHECK_HEADERS_ONCE(sys/socket.h)
1728 AC_CHECK_HEADERS(net/if.h, , , [AC_INCLUDES_DEFAULT
1729 #if HAVE_SYS_SOCKET_H
1730 #include <sys/socket.h>
1732 AC_CHECK_HEADERS(ifaddrs.h, , , [AC_INCLUDES_DEFAULT
1733 #if HAVE_SYS_SOCKET_H
1734 #include <sys/socket.h>
1736 AC_CHECK_HEADERS(net/if_dl.h, , , [AC_INCLUDES_DEFAULT
1737 #if HAVE_SYS_SOCKET_H
1738 #include <sys/socket.h>
1741 dnl checks for structure members
1742 AC_CHECK_MEMBERS([struct ifreq.ifr_flags, struct ifreq.ifr_hwaddr,
1743 struct ifreq.ifr_netmask, struct ifreq.ifr_broadaddr,
1744 struct ifreq.ifr_addr,
1745 struct ifreq.ifr_addr.sa_len], , ,
1746 [AC_INCLUDES_DEFAULT
1747 #if HAVE_SYS_SOCKET_H
1748 #include <sys/socket.h>
1754 dnl Check for endianness.
1755 dnl AC_C_BIGENDIAN is done by gnulib.
1757 dnl check for Make feature
1760 AUTODEPEND_PARENTS='lib src'
1761 dnl check if we have GCC and autodepend is on.
1762 if test "$GCC" = yes && test "$ac_enable_autodepend" = yes; then
1763 AC_CACHE_CHECK([whether gcc understands -MMD -MF], [emacs_cv_autodepend],
1764 [SAVE_CFLAGS="$CFLAGS"
1765 CFLAGS="$CFLAGS -MMD -MF deps.d -MP"
1766 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1767 [emacs_cv_autodepend=yes], [emacs_cv_autodepend=no])
1768 CFLAGS="$SAVE_CFLAGS"
1769 test -f deps.d || emacs_cv_autodepend=no
1771 if test $emacs_cv_autodepend = yes; then
1775 AC_SUBST(AUTO_DEPEND)
1777 #### Choose a window system.
1779 ## We leave window_system equal to none if
1780 ## we end up building without one. Any new window system should
1781 ## set window_system to an appropriate value and add objects to
1782 ## window-system-specific substs.
1786 if test "$no_x" != yes; then
1790 LD_SWITCH_X_SITE_RPATH=
1791 if test "${x_libraries}" != NONE; then
1792 if test -n "${x_libraries}"; then
1793 LD_SWITCH_X_SITE=-L`AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -L/g'`
1794 LD_SWITCH_X_SITE_RPATH=-Wl,-rpath,`
1795 AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -Wl,-rpath,/g'
1798 x_default_search_path=""
1799 x_search_path=${x_libraries}
1800 if test -z "${x_search_path}"; then
1801 x_search_path=/usr/lib
1803 for x_library in `AS_ECHO(["$x_search_path:"]) | \
1804 sed -e "s/:/ /g" -e p -e "s:/lib[[^ /]]* :/share :g"`; do
1806 ${x_library}/X11/%L/%T/%N%C%S:\
1807 ${x_library}/X11/%l/%T/%N%C%S:\
1808 ${x_library}/X11/%T/%N%C%S:\
1809 ${x_library}/X11/%L/%T/%N%S:\
1810 ${x_library}/X11/%l/%T/%N%S:\
1811 ${x_library}/X11/%T/%N%S"
1812 if test x"${x_default_search_path}" = x; then
1813 x_default_search_path=${x_search_path}
1815 x_default_search_path="${x_search_path}:${x_default_search_path}"
1819 AC_SUBST(LD_SWITCH_X_SITE_RPATH)
1821 if test "${x_includes}" != NONE && test -n "${x_includes}"; then
1822 C_SWITCH_X_SITE=$isystem`AS_ECHO(["$x_includes"]) | sed -e "s/:/ $isystem/g"`
1825 if test x"${x_includes}" = x; then
1826 bitmapdir=/usr/include/X11/bitmaps
1828 # accumulate include directories that have X11 bitmap subdirectories
1830 for bmd in `AS_ECHO(["$x_includes"]) | sed -e 's/:/ /g'`; do
1831 if test -d "${bmd}/X11/bitmaps"; then
1832 bmd_acc="${bmd_acc}:${bmd}/X11/bitmaps"
1834 if test -d "${bmd}/bitmaps"; then
1835 bmd_acc="${bmd_acc}:${bmd}/bitmaps"
1838 bitmapdir=${bmd_acc#:}
1841 test "${with_ns}" = maybe && test "${opsys}" != darwin && with_ns=no
1843 NS_GNUSTEP_CONFIG=no
1846 tmp_CPPFLAGS="$CPPFLAGS"
1847 tmp_CFLAGS="$CFLAGS"
1848 CPPFLAGS="$CPPFLAGS -x objective-c"
1849 CFLAGS="$CFLAGS -x objective-c"
1852 if test "${with_ns}" != no; then
1853 if test "${opsys}" = darwin; then
1855 ns_appdir=`pwd`/nextstep/Emacs.app
1856 ns_appbindir=${ns_appdir}/Contents/MacOS
1857 ns_appresdir=${ns_appdir}/Contents/Resources
1858 ns_appsrc=Cocoa/Emacs.base
1859 ns_fontfile=macfont.o
1860 elif flags=$( (gnustep-config --objc-flags) 2>/dev/null); then
1862 NS_GNUSTEP_CONFIG=yes
1863 GNU_OBJC_CFLAGS=$flags
1864 LIBS_GNUSTEP=$(gnustep-config --gui-libs) || exit
1865 elif test -f $GNUSTEP_CONFIG_FILE; then
1867 dnl FIXME sourcing this several times in subshells seems inefficient.
1868 GNUSTEP_SYSTEM_HEADERS=$(
1869 . $GNUSTEP_CONFIG_FILE
1870 AS_ECHO(["$GNUSTEP_SYSTEM_HEADERS"])
1872 GNUSTEP_SYSTEM_LIBRARIES=$(
1873 . $GNUSTEP_CONFIG_FILE
1874 AS_ECHO(["$GNUSTEP_SYSTEM_LIBRARIES"])
1876 dnl I seemed to need these as well with GNUstep-startup 0.25.
1877 GNUSTEP_LOCAL_HEADERS=$(
1878 . $GNUSTEP_CONFIG_FILE
1879 AS_ECHO(["$GNUSTEP_LOCAL_HEADERS"])
1881 GNUSTEP_LOCAL_LIBRARIES=$(
1882 . $GNUSTEP_CONFIG_FILE
1883 AS_ECHO(["$GNUSTEP_LOCAL_LIBRARIES"])
1885 test "x${GNUSTEP_LOCAL_HEADERS}" != "x" && \
1886 GNUSTEP_LOCAL_HEADERS="-I${GNUSTEP_LOCAL_HEADERS}"
1887 test "x${GNUSTEP_LOCAL_LIBRARIES}" != "x" && \
1888 GNUSTEP_LOCAL_LIBRARIES="-L${GNUSTEP_LOCAL_LIBRARIES}"
1889 CPPFLAGS="$CPPFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1890 CFLAGS="$CFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1891 LDFLAGS="$LDFLAGS -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES}"
1892 LIBS_GNUSTEP="-lgnustep-gui -lgnustep-base -lobjc -lpthread"
1893 dnl GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS to 0 or 1.
1894 dnl If they had chosen to either define it or not, we could have
1895 dnl just used AC_CHECK_DECL here.
1896 AC_CACHE_CHECK(if GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS,
1897 emacs_cv_objc_exceptions,
1898 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <GNUstepBase/GSConfig.h>]],
1899 [[#if defined BASE_NATIVE_OBJC_EXCEPTIONS && BASE_NATIVE_OBJC_EXCEPTIONS > 0
1903 #endif]])], emacs_cv_objc_exceptions=yes, emacs_cv_objc_exceptions=no ) )
1904 if test $emacs_cv_objc_exceptions = yes; then
1905 dnl _NATIVE_OBJC_EXCEPTIONS is used by the GNUstep headers.
1906 AC_DEFINE(_NATIVE_OBJC_EXCEPTIONS, 1,
1907 [Define if GNUstep uses ObjC exceptions.])
1908 GNU_OBJC_CFLAGS="-fobjc-exceptions"
1911 if test $NS_IMPL_GNUSTEP = yes; then
1912 ns_appdir=`pwd`/nextstep/Emacs.app
1913 ns_appbindir=${ns_appdir}
1914 ns_appresdir=${ns_appdir}/Resources
1915 ns_appsrc=GNUstep/Emacs.base
1916 ns_fontfile=nsfont.o
1919 dnl This is only used while we test the NS headers, it gets reset below.
1920 CPPFLAGS="$CPPFLAGS $GNU_OBJC_CFLAGS"
1921 CFLAGS="$CFLAGS $GNU_OBJC_CFLAGS"
1923 AC_CHECK_HEADER([AppKit/AppKit.h], [HAVE_NS=yes],
1924 [AC_MSG_ERROR([The include files (AppKit/AppKit.h etc) that
1925 are required for a Nextstep build are missing or cannot be compiled.
1926 Either fix this, or re-configure with the option '--without-ns'.])])
1929 if test "${NS_IMPL_COCOA}" = "yes"; then
1930 AC_MSG_CHECKING([for Mac OS X 10.6 or newer])
1931 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <AppKit/AppKit.h>],
1933 #ifdef MAC_OS_X_VERSION_MAX_ALLOWED
1934 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
1937 error "Mac OS X 10.6 or newer required";
1941 ns_osx_have_106=yes,
1943 AC_MSG_RESULT([$ns_osx_have_106])
1945 if test $ns_osx_have_106 = no; then
1946 AC_MSG_ERROR([Mac OS X 10.6 or newer is required]);
1951 AC_SUBST(LIBS_GNUSTEP)
1953 INSTALL_ARCH_INDEP_EXTRA=install-etc
1954 ns_self_contained=no
1957 if test "${HAVE_NS}" = yes; then
1958 if test "$with_toolkit_scroll_bars" = "no"; then
1959 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for Nextstep.])
1962 window_system=nextstep
1963 # set up packaging dirs
1964 if test "${EN_NS_SELF_CONTAINED}" = yes; then
1965 ns_self_contained=yes
1966 prefix=${ns_appresdir}
1967 exec_prefix=${ns_appbindir}
1968 dnl This one isn't really used, only archlibdir is.
1969 libexecdir="\${ns_appbindir}/libexec"
1970 archlibdir="\${ns_appbindir}/libexec"
1971 etcdocdir="\${ns_appresdir}/etc"
1972 etcdir="\${ns_appresdir}/etc"
1973 dnl FIXME maybe set datarootdir instead.
1974 dnl That would also get applications, icons, man.
1975 infodir="\${ns_appresdir}/info"
1976 mandir="\${ns_appresdir}/man"
1977 lispdir="\${ns_appresdir}/lisp"
1978 test "$locallisppathset" = no && locallisppath=""
1979 INSTALL_ARCH_INDEP_EXTRA=
1982 NS_OBJC_OBJ="nsterm.o nsfns.o nsmenu.o nsselect.o nsimage.o $ns_fontfile"
1984 CFLAGS="$tmp_CFLAGS"
1985 CPPFLAGS="$tmp_CPPFLAGS"
1986 AC_SUBST(INSTALL_ARCH_INDEP_EXTRA)
1987 AC_SUBST(ns_self_contained)
1989 AC_SUBST(NS_OBJC_OBJ)
1991 if test "${HAVE_NS}" = yes; then
1993 [if the Objective C compiler supports instancetype],
1994 [emacs_cv_objc_instancetype],
1995 [AC_LANG_PUSH([Objective C])
1997 [AC_LANG_SOURCE([[@interface Test
1998 + (instancetype)test;
2000 emacs_cv_objc_instancetype=yes,
2001 emacs_cv_objc_instancetype=no)
2002 AC_LANG_POP([Objective C])])
2004 if test x$emacs_cv_objc_instancetype = xyes ; then
2005 AC_DEFINE(NATIVE_OBJC_INSTANCETYPE, 1,
2006 [Define if ObjC compiler supports instancetype natively.])
2018 if test "${with_w32}" != no; then
2021 AC_CHECK_HEADER([windows.h], [HAVE_W32=yes],
2022 [AC_MSG_ERROR(['--with-w32' was specified, but windows.h
2023 cannot be found.])])
2026 ## Using --with-w32 with MinGW is a no-op, but we allow it.
2029 AC_MSG_ERROR([Using w32 with an autotools build is only supported for Cygwin and MinGW32.])
2034 if test "${opsys}" = "mingw32"; then
2035 AC_CACHE_CHECK([whether Windows API headers are recent enough], [emacs_cv_w32api],
2036 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2037 #include <windows.h>
2038 #include <usp10.h>]],
2039 [[PIMAGE_NT_HEADERS pHeader;
2040 PIMAGE_SECTION_HEADER pSection = IMAGE_FIRST_SECTION(pHeader)]])],
2041 [emacs_cv_w32api=yes], [emacs_cv_w32api=no])])
2042 if test "${emacs_cv_w32api}" = "no"; then
2043 AC_MSG_ERROR([the Windows API headers are too old to support this build.])
2045 HAVE_W32=${emacs_cv_w32api}
2055 if test "${HAVE_W32}" = "yes"; then
2056 AC_DEFINE(HAVE_NTGUI, 1, [Define to use native MS Windows GUI.])
2057 if test "$with_toolkit_scroll_bars" = "no"; then
2058 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for w32 build.])
2060 AC_CHECK_TOOL(WINDRES, [windres],
2061 [AC_MSG_ERROR([No resource compiler found.])])
2062 W32_OBJ="w32fns.o w32menu.o w32reg.o w32font.o w32term.o"
2063 W32_OBJ="$W32_OBJ w32xfns.o w32select.o w32uniscribe.o"
2064 EMACSRES="emacs.res"
2065 case "$canonical" in
2066 x86_64-*-*) EMACS_MANIFEST="emacs-x64.manifest" ;;
2067 *) EMACS_MANIFEST="emacs-x86.manifest" ;;
2069 dnl Construct something of the form "24,4,0,0" with 4 components.
2070 comma_version=`echo "${PACKAGE_VERSION}.0.0" | sed -e 's/\./,/g' -e 's/^\([[^,]]*,[[^,]]*,[[^,]]*,[[^,]]*\).*/\1/'`
2072 comma_space_version=`echo "$comma_version" | sed 's/,/, /g'`
2073 AC_SUBST(comma_version)
2074 AC_SUBST(comma_space_version)
2075 AC_CONFIG_FILES([nt/emacs.rc nt/emacsclient.rc])
2076 if test "${opsys}" = "cygwin"; then
2077 W32_LIBS="$W32_LIBS -lkernel32 -luser32 -lgdi32 -lole32 -lcomdlg32"
2078 W32_LIBS="$W32_LIBS -lusp10 -lcomctl32 -lwinspool"
2079 # Tell the linker that emacs.res is an object (which we compile from
2080 # the rc file), not a linker script.
2081 W32_RES_LINK="-Wl,emacs.res"
2083 W32_OBJ="$W32_OBJ w32.o w32console.o w32heap.o w32inevt.o w32proc.o"
2084 W32_LIBS="$W32_LIBS -lwinmm -lgdi32 -lcomdlg32"
2085 W32_LIBS="$W32_LIBS -lmpr -lwinspool -lole32 -lcomctl32 -lusp10"
2086 W32_RES_LINK="\$(EMACSRES)"
2087 CLIENTRES="emacsclient.res"
2088 CLIENTW="emacsclientw\$(EXEEXT)"
2089 FIRSTFILE_OBJ=firstfile.o
2092 LIBS_ECLIENT="-lcomctl32"
2093 LIB_WSOCK32="-lwsock32"
2094 NTLIB="ntlib.$ac_objext"
2095 XARGS_LIMIT="-s 10000"
2101 AC_SUBST(EMACS_MANIFEST)
2104 AC_SUBST(W32_RES_LINK)
2105 AC_SUBST(FIRSTFILE_OBJ)
2108 AC_SUBST(LIBS_ECLIENT)
2109 AC_SUBST(LIB_WSOCK32)
2111 AC_SUBST(XARGS_LIMIT)
2113 if test "${HAVE_W32}" = "yes"; then
2118 ## $window_system is now set to the window system we will
2126 case "${window_system}" in
2131 case "${with_x_toolkit}" in
2132 athena | lucid ) USE_X_TOOLKIT=LUCID ;;
2133 motif ) USE_X_TOOLKIT=MOTIF ;;
2135 term_header=gtkutil.h
2136 dnl Don't set this for GTK. A lot of tests below assumes Xt when
2137 dnl USE_X_TOOLKIT is set.
2138 USE_X_TOOLKIT=none ;;
2139 gtk2 ) with_gtk2=yes
2140 term_header=gtkutil.h
2141 USE_X_TOOLKIT=none ;;
2142 gtk3 ) with_gtk3=yes
2143 term_header=gtkutil.h
2144 USE_X_TOOLKIT=none ;;
2145 no ) USE_X_TOOLKIT=none ;;
2146 dnl If user did not say whether to use a toolkit, make this decision later:
2147 dnl use the toolkit if we have gtk, or X11R5 or newer.
2148 * ) USE_X_TOOLKIT=maybe ;;
2152 term_header=nsterm.h
2155 term_header=w32term.h
2159 if test "$window_system" = none && test "X$with_x" != "Xno"; then
2160 AC_CHECK_PROG(HAVE_XSERVER, X, true, false)
2161 if test "$HAVE_XSERVER" = true ||
2162 test -n "$DISPLAY" ||
2164 for emacs_libX11 in /usr/lib/libX11.*; do break; done
2165 test "$emacs_libX11" != '/usr/lib/libX11.*'
2168 AC_MSG_ERROR([You seem to be running X, but no X development libraries
2169 were found. You should install the relevant development files for X
2170 and for the toolkit you want, such as Gtk+ or Motif. Also make
2171 sure you have development files for image handling, i.e.
2172 tiff, gif, jpeg, png and xpm.
2173 If you are sure you want Emacs compiled without X window support, pass
2179 # Does the opsystem file prohibit the use of the GNU malloc?
2180 # Assume not, until told otherwise.
2184 [whether malloc is Doug Lea style],
2185 [emacs_cv_var_doug_lea_malloc],
2186 [emacs_cv_var_doug_lea_malloc=no
2187 dnl Hooks do not work with address sanitization.
2188 if test "$emacs_cv_sanitize_address" != yes; then
2191 [[#include <malloc.h>
2192 static void hook (void) {}]],
2193 [[malloc_set_state (malloc_get_state ());
2194 __after_morecore_hook = hook;
2195 __malloc_initialize_hook = hook;]])],
2196 [emacs_cv_var_doug_lea_malloc=yes])
2198 doug_lea_malloc=$emacs_cv_var_doug_lea_malloc
2203 test "$CANNOT_DUMP" = yes ||
2205 ## darwin ld insists on the use of malloc routines in the System framework.
2206 darwin | mingw32 | nacl | sol2-10) ;;
2207 cygwin) hybrid_malloc=yes
2209 *) test "$ac_cv_func_sbrk" = yes && system_malloc=$emacs_cv_sanitize_address;;
2212 if test "${system_malloc}" != yes && test "${doug_lea_malloc}" != yes \
2213 && test "${UNEXEC_OBJ}" = unexelf.o; then
2219 if test "${system_malloc}" = "yes"; then
2220 AC_DEFINE([SYSTEM_MALLOC], 1,
2221 [Define to 1 to use the system memory allocator, even if it is not
2225 (The GNU allocators don't work with this system configuration.)"
2227 elif test "$hybrid_malloc" = yes; then
2228 AC_DEFINE(HYBRID_MALLOC, 1,
2229 [Define to use gmalloc before dumping and the system malloc after.])
2232 GNU_MALLOC_reason=" (only before dumping)"
2233 GMALLOC_OBJ=gmalloc.o
2236 test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
2237 VMLIMIT_OBJ=vm-limit.o
2239 AC_CHECK_HEADERS([sys/vlimit.h])
2240 AC_CACHE_CHECK([for data_start], [emacs_cv_data_start],
2243 [[extern char data_start[]; char ch;]],
2244 [[return data_start < &ch;]])],
2245 [emacs_cv_data_start=yes],
2246 [emacs_cv_data_start=no])])
2247 if test $emacs_cv_data_start = yes; then
2248 AC_DEFINE([HAVE_DATA_START], 1,
2249 [Define to 1 if data_start is the address of the start
2250 of the main data segment.])
2253 AC_SUBST([HYBRID_MALLOC])
2254 AC_SUBST(GMALLOC_OBJ)
2255 AC_SUBST(VMLIMIT_OBJ)
2257 if test "$doug_lea_malloc" = "yes" && test "$hybrid_malloc" != yes; then
2258 if test "$GNU_MALLOC" = yes ; then
2260 (Using Doug Lea's new malloc from the GNU C Library.)"
2262 AC_DEFINE(DOUG_LEA_MALLOC, 1,
2263 [Define to 1 if the system memory allocator is Doug Lea style,
2264 with malloc hooks and malloc_set_state.])
2266 ## Use mmap directly for allocating larger buffers.
2267 ## FIXME this comes from src/s/{gnu,gnu-linux}.h:
2268 ## #ifdef DOUG_LEA_MALLOC; #undef REL_ALLOC; #endif
2269 ## Does the AC_FUNC_MMAP test below make this check unnecessary?
2271 mingw32|gnu*) REL_ALLOC=no ;;
2275 if test x"${REL_ALLOC}" = x; then
2276 REL_ALLOC=${GNU_MALLOC}
2279 use_mmap_for_buffers=no
2281 mingw32) use_mmap_for_buffers=yes ;;
2285 if test $use_mmap_for_buffers = yes; then
2286 AC_DEFINE(USE_MMAP_FOR_BUFFERS, 1, [Define to use mmap to allocate buffer text.])
2290 LIBS="$LIBS_SYSTEM $LIBS"
2292 dnl FIXME replace main with a function we actually want from this library.
2293 AC_CHECK_LIB(Xbsd, main, LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -lXbsd")
2295 dnl Check for the POSIX thread library.
2297 AC_CHECK_HEADERS_ONCE(pthread.h)
2298 if test "$ac_cv_header_pthread_h" && test "$opsys" != "mingw32"; then
2299 AC_CACHE_CHECK([for pthread library],
2300 [emacs_cv_pthread_lib],
2301 [emacs_cv_pthread_lib=no
2303 for emacs_pthread_lib in 'none needed' -lpthread; do
2304 case $emacs_pthread_lib in
2305 -*) LIBS="$OLD_LIBS $emacs_pthread_lib";;
2309 [[#include <pthread.h>
2311 sigset_t old_mask, new_mask;
2312 void noop (void) {}]],
2313 [[pthread_t th = pthread_self ();
2315 status += pthread_create (&th, 0, 0, 0);
2316 status += pthread_sigmask (SIG_BLOCK, &new_mask, &old_mask);
2317 status += pthread_kill (th, 0);
2318 #if ! (defined SYSTEM_MALLOC || defined HYBRID_MALLOC \
2319 || defined DOUG_LEA_MALLOC)
2320 /* Test for pthread_atfork only if gmalloc uses it,
2321 as older-style hosts like MirBSD 10 lack it. */
2322 status += pthread_atfork (noop, noop, noop);
2325 [emacs_cv_pthread_lib=$emacs_pthread_lib])
2327 if test "$emacs_cv_pthread_lib" != no; then
2331 if test "$emacs_cv_pthread_lib" != no; then
2332 AC_DEFINE([HAVE_PTHREAD], 1, [Define to 1 if you have POSIX threads.])
2333 case $emacs_cv_pthread_lib in
2334 -*) LIB_PTHREAD=$emacs_cv_pthread_lib;;
2336 ac_cv_func_pthread_sigmask=yes
2337 # Some systems optimize for single-threaded programs by default, and
2338 # need special flags to disable these optimizations. For example, the
2339 # definition of 'errno' in <errno.h>.
2342 AC_DEFINE([_REENTRANT], 1,
2343 [Define to 1 if your system requires this in multithreaded code.]);;
2345 AC_DEFINE([_THREAD_SAFE], 1,
2346 [Define to 1 if your system requires this in multithreaded code.]);;
2350 AC_SUBST([LIB_PTHREAD])
2352 AC_MSG_CHECKING([for thread support])
2354 if test "$with_threads" = yes; then
2355 if test "$emacs_cv_pthread_lib" != no; then
2356 AC_DEFINE(THREADS_ENABLED, 1,
2357 [Define to 1 if you want elisp thread support.])
2359 elif test "${opsys}" = "mingw32"; then
2360 dnl MinGW can do native Windows threads even without pthreads
2361 AC_DEFINE(THREADS_ENABLED, 1,
2362 [Define to 1 if you want elisp thread support.])
2366 AC_MSG_RESULT([$threads_enabled])
2368 dnl Check for need for bigtoc support on IBM AIX
2372 AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
2374 yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
2375 *) gdb_cv_bigtoc=-bbigtoc ;;
2378 LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
2379 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[int i;]])], [], [gdb_cv_bigtoc=])
2384 # Change CFLAGS, CPPFLAGS, and LIBS temporarily so that C_SWITCH_X_SITE
2385 # is for the tests that follow. We set them back later on.
2387 REAL_CFLAGS="$CFLAGS"
2388 REAL_CPPFLAGS="$CPPFLAGS"
2391 if test "${HAVE_X11}" = "yes"; then
2392 DEFS="$C_SWITCH_X_SITE $DEFS"
2393 LDFLAGS="$LDFLAGS $LD_SWITCH_X_SITE"
2395 CFLAGS="$C_SWITCH_X_SITE $CFLAGS"
2396 CPPFLAGS="$C_SWITCH_X_SITE $CPPFLAGS"
2398 # On Solaris, arrange for LD_RUN_PATH to point to the X libraries for tests.
2399 # This is handled by LD_SWITCH_X_SITE_RPATH during the real build,
2400 # but it's more convenient here to set LD_RUN_PATH since this
2401 # also works on hosts that don't understand LD_SWITCH_X_SITE_RPATH.
2402 if test "${x_libraries}" != NONE && test -n "${x_libraries}"; then
2403 LD_RUN_PATH=$x_libraries${LD_RUN_PATH+:}$LD_RUN_PATH
2407 if test "${opsys}" = "gnu-linux"; then
2408 AC_CACHE_CHECK([whether X on GNU/Linux needs -b to link], [emacs_cv_b_link],
2409 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2410 [[XOpenDisplay ("foo");]])],
2411 [xgnu_linux_first_failure=no],
2412 [xgnu_linux_first_failure=yes])
2413 if test "${xgnu_linux_first_failure}" = "yes"; then
2414 OLD_CPPFLAGS="$CPPFLAGS"
2416 CPPFLAGS="$CPPFLAGS -b i486-linuxaout"
2417 LIBS="$LIBS -b i486-linuxaout"
2418 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2419 [[XOpenDisplay ("foo");]])],
2420 [xgnu_linux_second_failure=no],
2421 [xgnu_linux_second_failure=yes])
2422 if test "${xgnu_linux_second_failure}" = "yes"; then
2423 # If we get the same failure with -b, there is no use adding -b.
2424 # So leave it out. This plays safe.
2429 CPPFLAGS=$OLD_CPPFLAGS
2434 if test "x$emacs_cv_b_link" = xyes ; then
2435 LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -b i486-linuxaout"
2436 C_SWITCH_X_SITE="$C_SWITCH_X_SITE -b i486-linuxaout"
2440 # Reportedly, some broken Solaris systems have XKBlib.h but are missing
2441 # header files included from there.
2442 AC_CACHE_CHECK([for Xkb], [emacs_cv_xkb],
2443 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>
2444 #include <X11/XKBlib.h>]],
2445 [[XkbDescPtr kb = XkbGetKeyboard (0, XkbAllComponentsMask, XkbUseCoreKbd);]])],
2446 emacs_cv_xkb=yes, emacs_cv_xkb=no)])
2447 if test $emacs_cv_xkb = yes; then
2448 AC_DEFINE(HAVE_XKB, 1, [Define to 1 if you have the Xkb extension.])
2451 AC_CHECK_FUNCS(XrmSetDatabase XScreenResourceString \
2452 XScreenNumberOfScreen)
2455 if test "${window_system}" = "x11"; then
2456 AC_MSG_CHECKING(X11 version 6)
2457 AC_CACHE_VAL(emacs_cv_x11_version_6,
2458 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]],
2459 [[#if XlibSpecificationRelease < 6
2462 ]])], emacs_cv_x11_version_6=yes, emacs_cv_x11_version_6=no)])
2463 if test $emacs_cv_x11_version_6 = yes; then
2464 AC_MSG_RESULT(6 or newer)
2465 AC_DEFINE(HAVE_X11R6, 1,
2466 [Define to 1 if you have the X11R6 or newer version of Xlib.])
2467 AC_DEFINE(HAVE_X_I18N, 1, [Define if you have usable i18n support.])
2468 ## inoue@ainet.or.jp says Solaris has a bug related to X11R6-style
2472 *) AC_DEFINE(HAVE_X11R6_XIM, 1,
2473 [Define if you have usable X11R6-style XIM support.])
2477 AC_MSG_RESULT(before 6)
2482 ### Use -lrsvg-2 if available, unless '--with-rsvg=no' is specified.
2484 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${opsys}" = "mingw32"; then
2485 if test "${with_rsvg}" != "no"; then
2486 RSVG_REQUIRED=2.11.0
2487 RSVG_MODULE="librsvg-2.0 >= $RSVG_REQUIRED"
2489 EMACS_CHECK_MODULES([RSVG], [$RSVG_MODULE])
2490 AC_SUBST(RSVG_CFLAGS)
2493 if test $HAVE_RSVG = yes; then
2494 AC_DEFINE(HAVE_RSVG, 1, [Define to 1 if using librsvg.])
2495 CFLAGS="$CFLAGS $RSVG_CFLAGS"
2496 # Windows loads librsvg dynamically
2497 if test "${opsys}" = "mingw32"; then
2505 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${HAVE_W32}" = "yes"; then
2506 if test "${with_imagemagick}" != "no"; then
2507 ## 6.3.5 is the earliest version known to work; see Bug#17339.
2508 ## 6.8.2 makes Emacs crash; see Bug#13867.
2509 ## 7 and later have not been ported to; See Bug#25967.
2510 IMAGEMAGICK_MODULE="Wand >= 6.3.5 Wand != 6.8.2 Wand < 7"
2511 EMACS_CHECK_MODULES([IMAGEMAGICK], [$IMAGEMAGICK_MODULE])
2513 if test $HAVE_IMAGEMAGICK = yes; then
2516 CFLAGS="$CFLAGS $IMAGEMAGICK_CFLAGS"
2517 LIBS="$IMAGEMAGICK_LIBS $LIBS"
2518 AC_CHECK_FUNCS([MagickRelinquishMemory MagickExportImagePixels \
2519 MagickMergeImageLayers MagickAutoOrientImage])
2522 # Check that ImageMagick links. It does not link on Fedora 25
2523 # with './configure CC=clang', as pkg-config outputs flags like
2524 # -lomp that work for GCC but not Clang.
2525 if test "$ac_cv_func_MagickRelinquishMemory" != yes; then
2529 if test $HAVE_IMAGEMAGICK = yes; then
2530 AC_DEFINE([HAVE_IMAGEMAGICK], 1, [Define to 1 if using ImageMagick.])
2535 AC_SUBST([IMAGEMAGICK_CFLAGS])
2536 AC_SUBST([IMAGEMAGICK_LIBS])
2540 AC_CHECK_LIB(anl, getaddrinfo_a, HAVE_GETADDRINFO_A=yes)
2541 if test "${HAVE_GETADDRINFO_A}" = "yes"; then
2542 AC_DEFINE(HAVE_GETADDRINFO_A, 1,
2543 [Define to 1 if you have getaddrinfo_a for asynchronous DNS resolution.])
2544 GETADDRINFO_A_LIBS="-lanl"
2545 AC_SUBST(GETADDRINFO_A_LIBS)
2550 gtk_term_header=$term_header
2553 if test "${opsys}" != "mingw32"; then
2554 if test "${with_gtk3}" = "yes" || test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
2557 GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2559 dnl Checks for libraries.
2560 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2561 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2562 if test "$pkg_check_gtk" = "no" && test "$with_gtk3" = "yes"; then
2563 AC_MSG_ERROR($GTK_PKG_ERRORS)
2565 if test "$pkg_check_gtk" = "yes"; then
2566 AC_DEFINE(HAVE_GTK3, 1, [Define to 1 if using GTK 3 or later.])
2567 GTK_OBJ=emacsgtkfixed.o
2568 gtk_term_header=gtkutil.h
2569 USE_GTK_TOOLKIT="GTK3"
2570 if test "x$ac_enable_gtk_deprecation_warnings" = x; then
2571 AC_DEFINE([GDK_DISABLE_DEPRECATION_WARNINGS], [1],
2572 [Define to 1 to disable GTK+/GDK deprecation warnings.])
2573 AC_DEFINE([GLIB_DISABLE_DEPRECATION_WARNINGS], [1],
2574 [Define to 1 to disable Glib deprecation warnings.])
2578 gtk3_pkg_errors="$GTK_PKG_ERRORS "
2582 if test "${with_gtk2}" = "yes" || test "$check_gtk2" = "yes"; then
2585 GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2587 dnl Checks for libraries.
2588 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2589 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2590 if test "$pkg_check_gtk" = "no" &&
2591 { test "$with_gtk" = yes || test "$with_gtk2" = "yes"; }
2593 AC_MSG_ERROR($gtk3_pkg_errors$GTK_PKG_ERRORS)
2595 test "$pkg_check_gtk" = "yes" && USE_GTK_TOOLKIT="GTK2"
2602 if test x"$pkg_check_gtk" = xyes; then
2605 CFLAGS="$CFLAGS $GTK_CFLAGS"
2606 LIBS="$GTK_LIBS $LIBS"
2607 dnl Try to compile a simple GTK program.
2608 AC_CACHE_CHECK([whether GTK compiles], [emacs_cv_gtk_compiles],
2611 [[/* Check the Gtk and Glib APIs. */
2612 #include <gtk/gtk.h>
2613 #include <glib-object.h>
2615 callback (GObject *go, GParamSpec *spec, gpointer user_data)
2619 GtkSettings *gs = 0;
2620 /* Use G_CALLBACK to make sure function pointers can be cast to void *;
2621 strict C prohibits this. Use gtk_main_iteration to test that the
2622 libraries are there. */
2623 if (g_signal_handler_find (G_OBJECT (gs), G_SIGNAL_MATCH_FUNC,
2624 0, 0, 0, G_CALLBACK (callback), 0))
2625 gtk_main_iteration ();
2627 [emacs_cv_gtk_compiles=yes], [emacs_cv_gtk_compiles=no])])
2628 if test "${emacs_cv_gtk_compiles}" != "yes"; then
2630 if test "$USE_X_TOOLKIT" != "maybe"; then
2631 AC_MSG_ERROR([Gtk+ wanted, but it does not compile, see config.log. Maybe some x11-devel files missing?]);
2634 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $GTK_CFLAGS"
2636 AC_DEFINE(USE_GTK, 1, [Define to 1 if using GTK.])
2637 GTK_OBJ="gtkutil.o $GTK_OBJ"
2638 term_header=$gtk_term_header
2640 AC_MSG_WARN([[Your version of Gtk+ will have problems with
2641 closing open displays. This is no problem if you just use
2642 one display, but if you use more than one and close one of them
2644 See http://bugzilla.gnome.org/show_bug.cgi?id=85715]])
2651 if test "${HAVE_GTK}" = "yes"; then
2653 dnl GTK scrollbars resemble toolkit scrollbars a lot, so to avoid
2654 dnl a lot if #ifdef:s, say we have toolkit scrollbars.
2655 if test "$with_toolkit_scroll_bars" != no; then
2656 with_toolkit_scroll_bars=yes
2659 dnl Check if we have the old file selection dialog declared and
2660 dnl in the link library. In 2.x it may be in the library,
2661 dnl but not declared if deprecated featured has been selected out.
2662 dnl AC_CHECK_DECL checks for a macro, so check for GTK_TYPE_FILE_SELECTION.
2663 HAVE_GTK_FILE_SELECTION=no
2664 AC_CHECK_DECL(GTK_TYPE_FILE_SELECTION, HAVE_GTK_FILE_SELECTION=yes,
2665 HAVE_GTK_FILE_SELECTION=no, [AC_INCLUDES_DEFAULT
2666 #include <gtk/gtk.h>])
2667 if test "$HAVE_GTK_FILE_SELECTION" = yes; then
2668 AC_CHECK_FUNCS(gtk_file_selection_new)
2671 dnl Same as above for gtk_handle_box.
2672 HAVE_GTK_HANDLE_BOX=no
2673 AC_CHECK_DECL(GTK_TYPE_HANDLE_BOX, HAVE_GTK_HANDLE_BOX=yes,
2674 HAVE_GTK_HANDLE_BOX=no, [AC_INCLUDES_DEFAULT
2675 #include <gtk/gtk.h>])
2676 if test "$HAVE_GTK_HANDLE_BOX" = yes; then
2677 AC_CHECK_FUNCS(gtk_handle_box_new)
2680 dnl Same as above for gtk_tearoff_menu_item.
2681 HAVE_GTK_TEAROFF_MENU_ITEM=no
2682 AC_CHECK_DECL(GTK_TYPE_TEAROFF_MENU_ITEM, HAVE_GTK_TEAROFF_MENU_ITEM=yes,
2683 HAVE_GTK_TEAROFF_MENU_ITEM=no, [AC_INCLUDES_DEFAULT
2684 #include <gtk/gtk.h>])
2685 if test "$HAVE_GTK_TEAROFF_MENU_ITEM" = yes; then
2686 AC_CHECK_FUNCS(gtk_tearoff_menu_item_new)
2689 dnl Check for functions introduced in 2.14 and later.
2690 AC_CHECK_FUNCS(gtk_widget_get_window gtk_widget_set_has_window \
2691 gtk_dialog_get_action_area gtk_widget_get_sensitive \
2692 gtk_widget_get_mapped gtk_adjustment_get_page_size \
2693 gtk_orientable_set_orientation \
2694 gtk_window_set_has_resize_grip)
2696 term_header=gtkutil.h
2700 dnl Enable xwidgets if GTK3 and WebKitGTK+ are available.
2703 if test "$with_xwidgets" != "no"; then
2704 test "$USE_GTK_TOOLKIT" = "GTK3" && test "$window_system" != "none" ||
2705 AC_MSG_ERROR([xwidgets requested but gtk3 not used.])
2707 WEBKIT_REQUIRED=2.12
2708 WEBKIT_MODULES="webkit2gtk-4.0 >= $WEBKIT_REQUIRED"
2709 EMACS_CHECK_MODULES([WEBKIT], [$WEBKIT_MODULES])
2710 HAVE_XWIDGETS=$HAVE_WEBKIT
2711 test $HAVE_XWIDGETS = yes ||
2712 AC_MSG_ERROR([xwidgets requested but WebKitGTK+ not found.])
2714 XWIDGETS_OBJ=xwidget.o
2715 AC_DEFINE([HAVE_XWIDGETS], 1, [Define to 1 if you have xwidgets support.])
2717 AC_SUBST(XWIDGETS_OBJ)
2722 dnl D-Bus has been tested under GNU/Linux only. Must be adapted for
2723 dnl other platforms.
2726 if test "${with_dbus}" = "yes"; then
2727 EMACS_CHECK_MODULES([DBUS], [dbus-1 >= 1.0])
2728 if test "$HAVE_DBUS" = yes; then
2729 AC_DEFINE(HAVE_DBUS, 1, [Define to 1 if using D-Bus.])
2730 dnl dbus_watch_get_unix_fd has been introduced in D-Bus 1.1.1.
2731 dnl dbus_type_is_valid and dbus_validate_* have been introduced in
2734 LIBS="$LIBS $DBUS_LIBS"
2735 AC_CHECK_FUNCS(dbus_watch_get_unix_fd \
2736 dbus_type_is_valid \
2737 dbus_validate_bus_name \
2738 dbus_validate_path \
2739 dbus_validate_interface \
2740 dbus_validate_member)
2745 AC_SUBST(DBUS_CFLAGS)
2749 dnl GSettings has been tested under GNU/Linux only.
2751 if test "${HAVE_X11}" = "yes" && test "${with_gsettings}" = "yes"; then
2752 EMACS_CHECK_MODULES([GSETTINGS], [gio-2.0 >= 2.26])
2753 if test "$HAVE_GSETTINGS" = "yes"; then
2755 CFLAGS="$CFLAGS $GSETTINGS_CFLAGS"
2757 LIBS="$LIBS $GSETTINGS_LIBS"
2758 AC_CACHE_CHECK([whether GSettings is in gio], [emacs_cv_gsettings_in_gio],
2761 [[/* Check that gsettings really is present. */
2762 #include <glib-object.h>
2763 #include <gio/gio.h>
2766 GSettings *settings;
2767 GVariant *val = g_settings_get_value (settings, "");
2769 [emacs_cv_gsettings_in_gio=yes], [emacs_cv_gsettings_in_gio=no])])
2771 if test "$emacs_cv_gsettings_in_gio" = "yes"; then
2772 AC_DEFINE(HAVE_GSETTINGS, 1, [Define to 1 if using GSettings.])
2773 SETTINGS_CFLAGS="$GSETTINGS_CFLAGS"
2774 SETTINGS_LIBS="$GSETTINGS_LIBS"
2775 test "$with_gconf" = "yes" || with_gconf=no
2782 dnl GConf has been tested under GNU/Linux only.
2783 dnl The version is really arbitrary, it is about the same age as Gtk+ 2.6.
2785 if test "${HAVE_X11}" = "yes" && test "${with_gconf}" != "no"; then
2786 EMACS_CHECK_MODULES([GCONF], [gconf-2.0 >= 2.13])
2787 if test "$HAVE_GCONF" = yes; then
2788 AC_DEFINE(HAVE_GCONF, 1, [Define to 1 if using GConf.])
2789 dnl Newer GConf doesn't link with g_objects, so this is not defined.
2790 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GCONF_CFLAGS"
2791 SETTINGS_LIBS="$SETTINGS_LIBS $GCONF_LIBS"
2795 if test "$HAVE_GSETTINGS" = "yes" || test "$HAVE_GCONF" = "yes"; then
2796 EMACS_CHECK_MODULES([GOBJECT], [gobject-2.0 >= 2.0])
2797 if test "$HAVE_GOBJECT" = "yes"; then
2798 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GOBJECT_CFLAGS"
2799 SETTINGS_LIBS="$SETTINGS_LIBS $GOBJECT_LIBS"
2801 SAVE_CFLAGS="$CFLAGS"
2803 CFLAGS="$SETTINGS_CFLAGS $CFLAGS"
2804 LIBS="$SETTINGS_LIBS $LIBS"
2805 CFLAGS="$SAVE_CFLAGS"
2808 AC_SUBST(SETTINGS_CFLAGS)
2809 AC_SUBST(SETTINGS_LIBS)
2812 dnl SELinux is available for GNU/Linux only.
2815 if test "${with_selinux}" = "yes"; then
2816 AC_CHECK_LIB([selinux], [lgetfilecon], HAVE_LIBSELINUX=yes, HAVE_LIBSELINUX=no)
2817 if test "$HAVE_LIBSELINUX" = yes; then
2818 AC_DEFINE(HAVE_LIBSELINUX, 1, [Define to 1 if using SELinux.])
2819 LIBSELINUX_LIBS=-lselinux
2822 AC_SUBST(LIBSELINUX_LIBS)
2825 if test "${with_gnutls}" = "yes" ; then
2826 EMACS_CHECK_MODULES([LIBGNUTLS], [gnutls >= 2.12.2],
2827 [HAVE_GNUTLS=yes], [HAVE_GNUTLS=no])
2828 if test "${HAVE_GNUTLS}" = "yes"; then
2829 AC_DEFINE(HAVE_GNUTLS, 1, [Define if using GnuTLS.])
2832 # Windows loads GnuTLS dynamically
2833 if test "${opsys}" = "mingw32"; then
2838 AC_SUBST(LIBGNUTLS_LIBS)
2839 AC_SUBST(LIBGNUTLS_CFLAGS)
2842 if test "${with_libsystemd}" = "yes" ; then
2843 dnl This code has been tested with libsystemd 222 and later.
2844 dnl FIXME: Find the earliest version number for which Emacs should work,
2845 dnl and change '222' to that number.
2846 EMACS_CHECK_MODULES([LIBSYSTEMD], [libsystemd >= 222],
2847 [HAVE_LIBSYSTEMD=yes], [HAVE_LIBSYSTEMD=no])
2848 if test "${HAVE_LIBSYSTEMD}" = "yes"; then
2849 AC_DEFINE(HAVE_LIBSYSTEMD, 1, [Define if using libsystemd.])
2853 AC_SUBST(LIBSYSTEMD_LIBS)
2854 AC_SUBST(LIBSYSTEMD_CFLAGS)
2859 dnl MS Windows native file monitor is available for mingw32 only.
2860 case $with_file_notification,$opsys in
2862 AC_MSG_ERROR(['--with-file-notification=w32' was specified, but
2863 this is only supported on MS-Windows native and MinGW32 builds.
2864 Consider using gfile instead.])
2866 w32,* | yes,mingw32)
2867 AC_CHECK_HEADER(windows.h)
2868 if test "$ac_cv_header_windows_h" = yes ; then
2869 AC_DEFINE(HAVE_W32NOTIFY, 1, [Define to 1 to use w32notify.])
2870 NOTIFY_OBJ=w32notify.o
2871 NOTIFY_SUMMARY="yes (w32)"
2875 dnl inotify is available only on GNU/Linux.
2876 case $with_file_notification,$NOTIFY_OBJ in
2878 AC_CHECK_HEADER(sys/inotify.h)
2879 if test "$ac_cv_header_sys_inotify_h" = yes ; then
2880 AC_CHECK_FUNC(inotify_init1)
2881 if test "$ac_cv_func_inotify_init1" = yes; then
2882 AC_DEFINE(HAVE_INOTIFY, 1, [Define to 1 to use inotify.])
2883 NOTIFY_OBJ=inotify.o
2884 NOTIFY_SUMMARY="yes -lglibc (inotify)"
2889 dnl kqueue is available on BSD-like systems.
2890 case $with_file_notification,$NOTIFY_OBJ in
2892 EMACS_CHECK_MODULES([KQUEUE], [libkqueue])
2893 if test "$HAVE_KQUEUE" = "yes"; then
2894 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2895 CPPFLAGS="$CPPFLAGS -I/usr/include/kqueue"
2896 NOTIFY_CFLAGS=$KQUEUE_CFLAGS
2897 NOTIFY_LIBS=$KQUEUE_LIBS
2899 NOTIFY_SUMMARY="yes -lkqueue"
2901 AC_SEARCH_LIBS(kqueue, [])
2902 if test "$ac_cv_search_kqueue" != no; then
2903 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2905 NOTIFY_SUMMARY="yes (kqueue)"
2910 dnl g_file_monitor exists since glib 2.18. G_FILE_MONITOR_EVENT_MOVED
2911 dnl has been added in glib 2.24. It has been tested under
2913 case $with_file_notification,$NOTIFY_OBJ in
2915 if test "${HAVE_NS}" = yes; then
2916 AC_MSG_ERROR(['--with-file-notification=gfile' is not supported in NextStep builds.
2917 Consider kqueue instead.])
2919 EMACS_CHECK_MODULES([GFILENOTIFY], [gio-2.0 >= 2.24])
2920 if test "$HAVE_GFILENOTIFY" = "yes"; then
2921 AC_DEFINE(HAVE_GFILENOTIFY, 1, [Define to 1 if using GFile.])
2922 NOTIFY_CFLAGS=$GFILENOTIFY_CFLAGS
2923 NOTIFY_LIBS=$GFILENOTIFY_LIBS
2924 NOTIFY_OBJ=gfilenotify.o
2925 NOTIFY_SUMMARY="yes -lgio (gfile)"
2930 case $with_file_notification,$NOTIFY_OBJ in
2931 yes,* | no,* | *,?*) ;;
2932 *) AC_MSG_ERROR([File notification '$with_file_notification' requested but requirements not found.]) ;;
2935 if test -n "$NOTIFY_OBJ"; then
2936 AC_DEFINE(USE_FILE_NOTIFY, 1, [Define to 1 if using file notifications.])
2938 AC_SUBST(NOTIFY_CFLAGS)
2939 AC_SUBST(NOTIFY_LIBS)
2940 AC_SUBST(NOTIFY_OBJ)
2942 dnl Do not put whitespace before the #include statements below.
2943 dnl Older compilers (eg sunos4 cc) choke on it.
2946 if test x"${USE_X_TOOLKIT}" = xmaybe || test x"${USE_X_TOOLKIT}" = xLUCID; then
2947 if test "$with_xaw3d" != no; then
2948 AC_CACHE_VAL(emacs_cv_xaw3d,
2949 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
2950 #include <X11/Intrinsic.h>
2951 #include <X11/Xaw3d/Simple.h>]],
2953 [AC_CHECK_LIB(Xaw3d, XawScrollbarSetThumb,
2954 emacs_cv_xaw3d=yes, emacs_cv_xaw3d=no)],
2955 emacs_cv_xaw3d=no)])
2959 if test $emacs_cv_xaw3d = yes; then
2960 AC_MSG_CHECKING(for xaw3d)
2961 AC_MSG_RESULT([yes; using Lucid toolkit])
2965 AC_DEFINE(HAVE_XAW3D, 1,
2966 [Define to 1 if you have the Xaw3d library (-lXaw3d).])
2968 AC_MSG_CHECKING(for xaw3d)
2970 AC_MSG_CHECKING(for libXaw)
2971 AC_CACHE_VAL(emacs_cv_xaw,
2972 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
2973 #include <X11/Intrinsic.h>
2974 #include <X11/Xaw/Simple.h>]],
2978 if test $emacs_cv_xaw = yes; then
2979 AC_MSG_RESULT([yes; using Lucid toolkit])
2982 elif test x"${USE_X_TOOLKIT}" = xLUCID; then
2983 AC_MSG_ERROR([Lucid toolkit requires X11/Xaw include files])
2985 AC_MSG_ERROR([No X toolkit could be found.
2986 If you are sure you want Emacs compiled without an X toolkit, pass
2988 to configure. Otherwise, install the development libraries for the toolkit
2989 that you want to use (e.g. Gtk+) and re-run configure.])
2994 X_TOOLKIT_TYPE=$USE_X_TOOLKIT
2998 if test "${USE_X_TOOLKIT}" != "none"; then
2999 AC_MSG_CHECKING(X11 toolkit version)
3000 AC_CACHE_VAL(emacs_cv_x11_toolkit_version_6,
3001 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Intrinsic.h>]],
3002 [[#if XtSpecificationRelease < 6
3005 ]])], emacs_cv_x11_toolkit_version_6=yes, emacs_cv_x11_toolkit_version_6=no)])
3006 HAVE_X11XTR6=$emacs_cv_x11_toolkit_version_6
3007 if test $emacs_cv_x11_toolkit_version_6 = yes; then
3008 AC_MSG_RESULT(6 or newer)
3009 AC_DEFINE(HAVE_X11XTR6, 1,
3010 [Define to 1 if you have the X11R6 or newer version of Xt.])
3011 LIBXTR6="-lSM -lICE"
3013 ## Use libw.a along with X11R6 Xt.
3014 unixware) LIBXTR6="$LIBXTR6 -lw" ;;
3017 AC_MSG_RESULT(before 6)
3020 dnl If using toolkit, check whether libXmu.a exists.
3021 dnl tranle@intellicorp.com says libXmu.a can need XtMalloc in libXt.a to link.
3023 if test x$HAVE_X11XTR6 = xyes; then
3024 OTHERLIBS='-lXt -lSM -lICE'
3028 AC_SEARCH_LIBS([XmuConvertStandardSelection], [Xmu], [], [], [$OTHERLIBS])
3029 if test "X$LIBS" != "X$OLDLIBS"; then
3030 LIBXMU=$ac_cv_search_XmuConvertStandardSelection
3033 dnl ac_cv_search_XmuConvertStandardSelection is also referenced below.
3039 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3040 # OpenMotif may be installed in such a way on some GNU/Linux systems.
3041 if test -d /usr/include/openmotif; then
3042 CPPFLAGS="-I/usr/include/openmotif $CPPFLAGS"
3043 emacs_cv_openmotif=yes
3044 case "$canonical" in
3045 x86_64-*-linux-gnu* | powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*)
3046 test -d /usr/lib64/openmotif && LDFLAGS="-L/usr/lib64/openmotif $LDFLAGS"
3049 test -d /usr/lib/openmotif && LDFLAGS="-L/usr/lib/openmotif $LDFLAGS"
3052 emacs_cv_openmotif=no
3054 AC_CACHE_CHECK(for (Open)Motif version 2.1, emacs_cv_motif_version_2_1,
3055 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <Xm/Xm.h>]],
3056 [[#if XmVERSION > 2 || (XmVERSION == 2 && XmREVISION >= 1)
3059 Motif version prior to 2.1.
3061 emacs_cv_motif_version_2_1=yes, emacs_cv_motif_version_2_1=no)])
3062 if test $emacs_cv_motif_version_2_1 = yes; then
3063 AC_CHECK_LIB(Xp, XpCreateContext, LIBXP=-lXp)
3064 if test x$emacs_cv_openmotif = xyes; then
3065 REAL_CPPFLAGS="-I/usr/include/openmotif $REAL_CPPFLAGS"
3068 AC_CACHE_CHECK(for LessTif where some systems put it, emacs_cv_lesstif,
3069 # We put this in CFLAGS temporarily to precede other -I options
3070 # that might be in CFLAGS temporarily.
3071 # We put this in CPPFLAGS where it precedes the other -I options.
3072 OLD_CPPFLAGS=$CPPFLAGS
3074 CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CPPFLAGS"
3075 CFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CFLAGS"
3076 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include </usr/X11R6/LessTif/Motif1.2/include/Xm/Xm.h>]],
3078 emacs_cv_lesstif=yes, emacs_cv_lesstif=no)])
3079 if test $emacs_cv_lesstif = yes; then
3080 # Make sure this -I option remains in CPPFLAGS after it is set
3081 # back to REAL_CPPFLAGS.
3082 # There is no need to change REAL_CFLAGS, because REAL_CFLAGS does not
3083 # have those other -I options anyway. Ultimately, having this
3084 # directory ultimately in CPPFLAGS will be enough.
3085 REAL_CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $REAL_CPPFLAGS"
3086 LDFLAGS="-L/usr/X11R6/LessTif/Motif1.2/lib $LDFLAGS"
3089 CPPFLAGS=$OLD_CPPFLAGS
3092 AC_CHECK_HEADER([Xm/BulletinB.h], [],
3093 [AC_MSG_ERROR([Motif toolkit requested but requirements not found.])])
3096 dnl Use toolkit scroll bars if configured for GTK or X toolkit and either
3097 dnl using Motif or Xaw3d is available, and unless
3098 dnl --with-toolkit-scroll-bars=no was specified.
3100 AH_TEMPLATE(USE_TOOLKIT_SCROLL_BARS,
3101 [Define to 1 if we should use toolkit scroll bars.])dnl
3102 USE_TOOLKIT_SCROLL_BARS=no
3103 if test "${with_toolkit_scroll_bars}" != "no"; then
3104 if test "${USE_X_TOOLKIT}" != "none"; then
3105 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3106 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3108 USE_TOOLKIT_SCROLL_BARS=yes
3109 elif test "${HAVE_XAW3D}" = "yes" || test "${USE_X_TOOLKIT}" = "LUCID"; then
3110 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3111 USE_TOOLKIT_SCROLL_BARS=yes
3113 elif test "${HAVE_GTK}" = "yes"; then
3114 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3115 USE_TOOLKIT_SCROLL_BARS=yes
3116 elif test "${HAVE_NS}" = "yes"; then
3117 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3118 USE_TOOLKIT_SCROLL_BARS=yes
3119 elif test "${HAVE_W32}" = "yes"; then
3120 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3121 USE_TOOLKIT_SCROLL_BARS=yes
3125 dnl See if XIM is available.
3126 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3127 #include <X11/Xlib.h>
3128 #include <X11/Xresource.h>]],
3129 [[XIMProc callback;]])],
3131 AC_DEFINE(HAVE_XIM, 1, [Define to 1 if XIM is available])],
3134 dnl '--with-xim' now controls only the initial value of use_xim at run time.
3136 if test "${with_xim}" != "no"; then
3137 AC_DEFINE(USE_XIM, 1,
3138 [Define to 1 if we should use XIM, if it is available.])
3142 if test "${HAVE_XIM}" != "no"; then
3144 if test "$GCC" = yes; then
3145 CFLAGS="$CFLAGS --pedantic-errors"
3147 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3148 #include <X11/Xlib.h>
3149 #include <X11/Xresource.h>]],
3155 XPointer *client_data;
3157 /* If we're not using GCC, it's probably not XFree86, and this is
3158 probably right, but we can't use something like --pedantic-errors. */
3159 extern Bool XRegisterIMInstantiateCallback(Display*, XrmDatabase, char*,
3160 char*, XIMProc, XPointer*);
3162 (void)XRegisterIMInstantiateCallback(display, db, res_name, res_class, callback,
3164 [emacs_cv_arg6_star=yes])
3165 AH_TEMPLATE(XRegisterIMInstantiateCallback_arg6,
3166 [Define to the type of the 6th arg of XRegisterIMInstantiateCallback,
3167 either XPointer or XPointer*.])dnl
3168 if test "$emacs_cv_arg6_star" = yes; then
3169 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer*])
3171 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer])
3176 ### Start of font-backend (under any platform) section.
3177 # (nothing here yet -- this is a placeholder)
3178 ### End of font-backend (under any platform) section.
3180 ### Start of font-backend (under X11) section.
3181 if test "${HAVE_X11}" = "yes"; then
3182 ## Use -lXft if available, unless '--with-xft=no'.
3184 if test "x${with_x}" = "xno"; then
3188 if test "$with_xft" != no; then
3189 EMACS_CHECK_MODULES([FONTCONFIG], [fontconfig >= 2.2.0])
3190 with_xft=$HAVE_FONTCONFIG
3193 if test "x${with_xft}" != "xno"; then
3195 EMACS_CHECK_MODULES([XFT], [xft >= 0.13.0], [], [HAVE_XFT=no])
3196 ## Because xftfont.c uses XRenderQueryExtension, we also
3197 ## need to link to -lXrender.
3199 AC_CHECK_LIB(Xrender, XRenderQueryExtension, HAVE_XRENDER=yes)
3200 if test "$HAVE_XFT" != no && test "$HAVE_XRENDER" != no; then
3201 OLD_CPPFLAGS="$CPPFLAGS"
3202 OLD_CFLAGS="$CFLAGS"
3204 CPPFLAGS="$CPPFLAGS $XFT_CFLAGS"
3205 CFLAGS="$CFLAGS $XFT_CFLAGS"
3206 XFT_LIBS="-lXrender $XFT_LIBS"
3207 LIBS="$XFT_LIBS $LIBS"
3208 AC_CHECK_HEADER(X11/Xft/Xft.h,
3209 AC_CHECK_LIB(Xft, XftFontOpen, HAVE_XFT=yes, , $XFT_LIBS) , ,
3210 [[#include <X11/X.h>]])
3212 if test "${HAVE_XFT}" = "yes"; then
3213 AC_DEFINE(HAVE_XFT, 1, [Define to 1 if you have the Xft library.])
3215 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $XFT_CFLAGS"
3216 fi # "${HAVE_XFT}" = "yes"
3217 CPPFLAGS=$OLD_CPPFLAGS
3220 fi # "$HAVE_XFT" != no
3221 fi # "x${with_xft}" != "xno"
3223 ## We used to allow building with FreeType and without Xft.
3224 ## However, the ftx font backend driver is not in good shape.
3225 if test "$HAVE_XFT" != "yes"; then
3226 dnl For the "Does Emacs use" message at the end.
3230 dnl Strict linkers fail with
3231 dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
3232 dnl if -lfreetype is not specified.
3233 dnl The following is needed to set FREETYPE_LIBS.
3234 EMACS_CHECK_MODULES([FREETYPE], [freetype2])
3236 test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(libxft requires libfreetype)
3240 if test "${HAVE_FREETYPE}" = "yes"; then
3241 AC_DEFINE(HAVE_FREETYPE, 1,
3242 [Define to 1 if using the freetype and fontconfig libraries.])
3243 if test "${with_libotf}" != "no"; then
3244 EMACS_CHECK_MODULES([LIBOTF], [libotf])
3245 if test "$HAVE_LIBOTF" = "yes"; then
3246 AC_DEFINE(HAVE_LIBOTF, 1, [Define to 1 if using libotf.])
3247 AC_CHECK_LIB(otf, OTF_get_variation_glyphs,
3248 HAVE_OTF_GET_VARIATION_GLYPHS=yes,
3249 HAVE_OTF_GET_VARIATION_GLYPHS=no)
3250 if test "${HAVE_OTF_GET_VARIATION_GLYPHS}" = "yes"; then
3251 AC_DEFINE(HAVE_OTF_GET_VARIATION_GLYPHS, 1,
3252 [Define to 1 if libotf has OTF_get_variation_glyphs.])
3256 dnl FIXME should there be an error if HAVE_FREETYPE != yes?
3257 dnl Does the new font backend require it, or can it work without it?
3261 if test "${HAVE_LIBOTF}" = yes; then
3262 if test "${with_m17n_flt}" != "no"; then
3263 EMACS_CHECK_MODULES([M17N_FLT], [m17n-flt])
3264 if test "$HAVE_M17N_FLT" = "yes"; then
3265 AC_DEFINE(HAVE_M17N_FLT, 1, [Define to 1 if using libm17n-flt.])
3276 ### End of font-backend (under X11) section.
3278 AC_SUBST(FREETYPE_CFLAGS)
3279 AC_SUBST(FREETYPE_LIBS)
3280 AC_SUBST(FONTCONFIG_CFLAGS)
3281 AC_SUBST(FONTCONFIG_LIBS)
3282 AC_SUBST(LIBOTF_CFLAGS)
3283 AC_SUBST(LIBOTF_LIBS)
3284 AC_SUBST(M17N_FLT_CFLAGS)
3285 AC_SUBST(M17N_FLT_LIBS)
3288 if test "${HAVE_X11}" = "yes"; then
3289 if test "${with_cairo}" != "no"; then
3290 CAIRO_REQUIRED=1.12.0
3291 CAIRO_MODULE="cairo >= $CAIRO_REQUIRED"
3292 EMACS_CHECK_MODULES(CAIRO, $CAIRO_MODULE)
3293 if test $HAVE_CAIRO = yes; then
3294 AC_DEFINE(USE_CAIRO, 1, [Define to 1 if using cairo.])
3296 AC_MSG_ERROR([cairo requested but not found.])
3299 CFLAGS="$CFLAGS $CAIRO_CFLAGS"
3300 LIBS="$LIBS $CAIRO_LIBS"
3301 AC_SUBST(CAIRO_CFLAGS)
3302 AC_SUBST(CAIRO_LIBS)
3306 if test "${HAVE_X11}" = "yes"; then
3307 AC_CHECK_HEADER(X11/Xlib-xcb.h,
3308 AC_CHECK_LIB(xcb, xcb_translate_coordinates, HAVE_XCB=yes))
3309 if test "${HAVE_XCB}" = "yes"; then
3310 AC_CHECK_LIB(X11-xcb, XGetXCBConnection, HAVE_X11_XCB=yes)
3311 if test "${HAVE_X11_XCB}" = "yes"; then
3312 AC_DEFINE(USE_XCB, 1,
3313 [Define to 1 if you have the XCB library and X11-XCB library for mixed
3314 X11/XCB programming.])
3315 XCB_LIBS="-lX11-xcb -lxcb"
3321 ### Use -lXpm if available, unless '--with-xpm=no'.
3322 ### mingw32 doesn't use -lXpm, since it loads the library dynamically.
3323 ### The Cygwin-w32 build uses <noX/xpm.h> instead of <X11/xpm.h>, so
3324 ### we need to set LDFLAGS accordingly.
3327 if test "${HAVE_W32}" = "yes" && test "${opsys}" = "cygwin"; then
3328 if test "${with_xpm}" != "no"; then
3329 SAVE_LDFLAGS="$LDFLAGS"
3330 LDFLAGS="$LDFLAGS -L/usr/lib/noX"
3331 AC_CHECK_HEADER(noX/xpm.h,
3332 [AC_CHECK_LIB(Xpm, XpmReadFileToImage, HAVE_XPM=yes)])
3333 if test "${HAVE_XPM}" = "yes"; then
3334 AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
3335 [emacs_cv_cpp_xpm_return_alloc_pixels],
3336 [AC_EGREP_CPP(no_return_alloc_pixels,
3337 [#include "noX/xpm.h"
3338 #ifndef XpmReturnAllocPixels
3339 no_return_alloc_pixels
3341 ], emacs_cv_cpp_xpm_return_alloc_pixels=no,
3342 emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
3344 if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
3346 LDFLAGS="$SAVE_LDFLAGS"
3351 if test "${HAVE_XPM}" = "yes"; then
3352 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3357 if test "${HAVE_X11}" = "yes"; then
3358 dnl Avoid Xpm on AIX unless requested, as it crashes; see Bug#17598.
3359 test "$opsys$with_xpm_set" = aix4-2 && with_xpm=no
3361 if test "${with_xpm}" != "no"; then
3362 AC_CHECK_HEADER(X11/xpm.h,
3363 [AC_CHECK_LIB(Xpm, XpmReadFileToPixmap, HAVE_XPM=yes, , -lX11)])
3364 if test "${HAVE_XPM}" = "yes"; then
3365 AC_CACHE_CHECK([for XpmReturnAllocPixels preprocessor define],
3366 [emacs_cv_cpp_xpm_return_alloc_pixels],
3367 [AC_EGREP_CPP(no_return_alloc_pixels,
3368 [#include "X11/xpm.h"
3369 #ifndef XpmReturnAllocPixels
3370 no_return_alloc_pixels
3372 ], emacs_cv_cpp_xpm_return_alloc_pixels=no,
3373 emacs_cv_cpp_xpm_return_alloc_pixels=yes)])
3375 if test "$emacs_cv_cpp_xpm_return_alloc_pixels" = "no"; then
3381 if test "${HAVE_XPM}" = "yes"; then
3382 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3384 elif test "$opsys,$LUCID_LIBW" = aix4-2,-lXaw; then
3385 dnl AIX -lXaw needs -lXpm linked too; see Bug#17598 Message#152.
3390 ### FIXME: Perhaps regroup to minimize code duplication due to MinGW's
3391 ### slightly different requirements wrt image libraries (it doesn't
3392 ### use -lXpm because it loads the xpm shared library dynamically at
3394 if test "${opsys}" = "mingw32"; then
3395 if test "${with_xpm}" != "no"; then
3396 AC_CHECK_HEADER(X11/xpm.h, HAVE_XPM=yes, HAVE_XPM=no, [
3400 if test "${HAVE_XPM}" = "yes"; then
3401 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3407 ### Use -ljpeg if available, unless '--with-jpeg=no'.
3410 if test "${with_jpeg}" != "no"; then
3411 AC_CACHE_CHECK([for jpeglib 6b or later],
3414 for emacs_cv_jpeglib in yes -ljpeg no; do
3415 case $emacs_cv_jpeglib in
3418 *) LIBS="$LIBS $emacs_cv_jpeglib";;
3422 [[#undef HAVE_STDLIB_H /* Avoid config.h/jpeglib.h collision. */
3423 #include <stdio.h> /* jpeglib.h needs FILE and size_t. */
3424 #include <jpeglib.h>
3426 char verify[JPEG_LIB_VERSION < 62 ? -1 : 1];
3427 struct jpeg_decompress_struct cinfo;
3430 jpeg_create_decompress (&cinfo);
3431 WARNMS (&cinfo, JWRN_JPEG_EOF);
3432 jpeg_destroy_decompress (&cinfo);
3434 [emacs_link_ok=yes],
3437 test $emacs_link_ok = yes && break
3439 if test "$emacs_cv_jpeglib" != no; then
3441 AC_DEFINE([HAVE_JPEG], 1,
3442 [Define to 1 if you have the jpeg library (typically -ljpeg).])
3443 ### mingw32 doesn't use -ljpeg, since it loads the library
3444 ### dynamically when needed, and doesn't want a run-time
3445 ### dependency on the jpeglib DLL.
3446 test "$emacs_cv_jpeglib" != yes && test "${opsys}" != "mingw32" \
3447 && LIBJPEG=$emacs_cv_jpeglib
3454 if test "${with_zlib}" != "no"; then
3456 AC_SEARCH_LIBS([inflateEnd], [z], [HAVE_ZLIB=yes])
3458 case $ac_cv_search_inflateEnd in
3459 -*) LIBZ=$ac_cv_search_inflateEnd ;;
3462 if test "${HAVE_ZLIB}" = "yes"; then
3463 AC_DEFINE([HAVE_ZLIB], 1, [Define to 1 if you have the zlib library (-lz).])
3464 ### mingw32 doesn't use -lz, since it loads the library dynamically.
3465 if test "${opsys}" = "mingw32"; then
3471 ### Dynamic modules support
3476 cygwin|mingw32) MODULES_SUFFIX=".dll" ;;
3477 *) MODULES_SUFFIX=".so" ;;
3479 if test "${with_modules}" != "no"; then
3485 cygwin|mingw32|darwin)
3489 # BSD systems have dlopen in libc.
3490 AC_CHECK_FUNC([dlopen], [HAVE_MODULES=yes])
3494 if test "${HAVE_MODULES}" = no; then
3495 AC_MSG_ERROR([Dynamic modules are not supported on your system])
3498 LIBS="$LIBS $LIBMODULES"
3499 AC_CHECK_FUNCS([dladdr dlfunc])
3504 if test "${HAVE_MODULES}" = yes; then
3505 MODULES_OBJ="dynlib.o emacs-module.o"
3506 AC_DEFINE(HAVE_MODULES, 1, [Define to 1 if dynamic modules are enabled])
3507 AC_DEFINE_UNQUOTED(MODULES_SUFFIX, "$MODULES_SUFFIX",
3508 [System extension for dynamic libraries])
3510 AC_SUBST(MODULES_OBJ)
3511 AC_SUBST(LIBMODULES)
3512 AC_SUBST(HAVE_MODULES)
3513 AC_SUBST(MODULES_SUFFIX)
3515 AC_CONFIG_FILES([src/emacs-module.h])
3516 AC_SUBST_FILE([module_env_snippet_25])
3517 AC_SUBST_FILE([module_env_snippet_26])
3518 module_env_snippet_25="$srcdir/src/module-env-25.h"
3519 module_env_snippet_26="$srcdir/src/module-env-26.h"
3521 ### Use -lpng if available, unless '--with-png=no'.
3525 if test "${NS_IMPL_COCOA}" = yes; then
3527 elif test "${with_png}" != no; then
3528 # mingw32 loads the library dynamically.
3529 if test "$opsys" = mingw32; then
3530 AC_CHECK_HEADER([png.h], [HAVE_PNG=yes])
3531 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3532 AC_MSG_CHECKING([for png])
3533 png_cflags=`(libpng-config --cflags) 2>&AS_MESSAGE_LOG_FD` &&
3534 png_ldflags=`(libpng-config --ldflags) 2>&AS_MESSAGE_LOG_FD` || {
3535 # libpng-config does not work; configure by hand.
3536 # Debian unstable as of July 2003 has multiple libpngs, and puts png.h
3537 # in /usr/include/libpng.
3538 if test -r /usr/include/libpng/png.h &&
3539 test ! -r /usr/include/png.h; then
3540 png_cflags=-I/usr/include/libpng
3548 CFLAGS="$CFLAGS $png_cflags"
3549 LIBS="$png_ldflags -lz -lm $LIBS"
3551 [AC_LANG_PROGRAM([[#include <png.h>]],
3552 [[return !png_get_channels (0, 0);]])],
3554 PNG_CFLAGS=`AS_ECHO(["$png_cflags"]) | sed -e "$edit_cflags"`
3556 # $LIBPNG requires explicit -lz in some cases.
3557 # We don't know what those cases are, exactly, so play it safe and
3558 # append -lz to any nonempty $LIBPNG, unless we're already using LIBZ.
3559 if test -n "$LIBPNG" && test -z "$LIBZ"; then
3560 LIBPNG="$LIBPNG -lz"
3564 AC_MSG_RESULT([$HAVE_PNG])
3567 if test $HAVE_PNG = yes; then
3568 AC_DEFINE([HAVE_PNG], [1], [Define to 1 if you have the png library.])
3571 CFLAGS="$CFLAGS $PNG_CFLAGS"
3572 AC_CHECK_DECL([png_longjmp],
3574 [AC_DEFINE([PNG_DEPSTRUCT], [],
3575 [Define to empty to suppress deprecation warnings when building
3576 with --enable-gcc-warnings and with libpng versions before 1.5,
3577 which lack png_longjmp.])],
3583 AC_SUBST(PNG_CFLAGS)
3585 ### Use -ltiff if available, unless '--with-tiff=no'.
3586 ### mingw32 doesn't use -ltiff, since it loads the library dynamically.
3589 if test "${opsys}" = "mingw32"; then
3590 if test "${with_tiff}" != "no"; then
3591 AC_CHECK_HEADER(tiffio.h, HAVE_TIFF=yes, HAVE_TIFF=no)
3593 if test "${HAVE_TIFF}" = "yes"; then
3594 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3596 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3597 if test "${with_tiff}" != "no"; then
3598 AC_CHECK_HEADER(tiffio.h,
3600 # At least one tiff package requires the jpeg library.
3601 if test "${HAVE_JPEG}" = yes; then tifflibs="-ljpeg $tifflibs"; fi
3602 AC_CHECK_LIB(tiff, TIFFGetVersion, HAVE_TIFF=yes, , $tifflibs)])
3605 if test "${HAVE_TIFF}" = "yes"; then
3606 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3607 dnl FIXME -lz -lm, as per libpng?
3613 ### Use -lgif or -lungif if available, unless '--with-gif=no'.
3614 ### mingw32 doesn't use -lgif/-lungif, since it loads the library dynamically.
3617 if test "${opsys}" = "mingw32"; then
3618 if test "${with_gif}" != "no"; then
3619 AC_CHECK_HEADER(gif_lib.h, HAVE_GIF=yes, HAVE_GIF=no)
3621 if test "${HAVE_GIF}" = "yes"; then
3622 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3624 elif test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no" \
3625 || test "${HAVE_W32}" = "yes"; then
3626 AC_CHECK_HEADER(gif_lib.h,
3627 # EGifPutExtensionLast only exists from version libungif-4.1.0b1.
3628 # Earlier versions can crash Emacs, but version 5.0 removes EGifPutExtensionLast.
3629 [AC_CHECK_LIB(gif, GifMakeMapObject, HAVE_GIF=yes,
3630 [AC_CHECK_LIB(gif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=maybe)])])
3632 if test "$HAVE_GIF" = yes; then
3634 elif test "$HAVE_GIF" = maybe; then
3635 # If gif_lib.h but no libgif, try libungif.
3636 AC_CHECK_LIB(ungif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=no)
3637 test "$HAVE_GIF" = yes && LIBGIF=-lungif
3640 if test "${HAVE_GIF}" = "yes"; then
3641 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3646 dnl Check for required libraries.
3649 if test "${HAVE_X11}" = "yes"; then
3650 test "${with_xpm}" != "no" && test "${HAVE_XPM}" != "yes" &&
3651 MISSING="libXpm" && WITH_NO="--with-xpm=no"
3652 test "${with_jpeg}" != "no" && test "${HAVE_JPEG}" != "yes" &&
3653 MISSING="$MISSING libjpeg" && WITH_NO="$WITH_NO --with-jpeg=no"
3654 test "${with_png}" != "no" && test "${HAVE_PNG}" != "yes" &&
3655 MISSING="$MISSING libpng" && WITH_NO="$WITH_NO --with-png=no"
3656 test "${with_gif}" != "no" && test "${HAVE_GIF}" != "yes" &&
3657 MISSING="$MISSING libgif/libungif" && WITH_NO="$WITH_NO --with-gif=no"
3658 test "${with_tiff}" != "no" && test "${HAVE_TIFF}" != "yes" &&
3659 MISSING="$MISSING libtiff" && WITH_NO="$WITH_NO --with-tiff=no"
3661 test "${with_gnutls}" != "no" && test "${HAVE_GNUTLS}" != "yes" &&
3662 MISSING="$MISSING gnutls" && WITH_NO="$WITH_NO --with-gnutls=no"
3663 if test "X${MISSING}" != X; then
3664 AC_MSG_ERROR([The following required libraries were not found:
3666 Maybe some development libraries/packages are missing?
3667 If you don't want to link with them give
3669 as options to configure])
3672 ### Use -lgpm if available, unless '--with-gpm=no'.
3675 if test "${with_gpm}" != "no"; then
3676 AC_CHECK_HEADER(gpm.h,
3677 [AC_CHECK_LIB(gpm, Gpm_Open, HAVE_GPM=yes)])
3679 if test "${HAVE_GPM}" = "yes"; then
3680 AC_DEFINE(HAVE_GPM, 1, [Define to 1 if you have the gpm library (-lgpm).])
3686 dnl Check for malloc/malloc.h on darwin
3687 AC_CHECK_HEADERS_ONCE(malloc/malloc.h)
3690 ### Use NeXTstep API to implement GUI.
3691 if test "${HAVE_NS}" = "yes"; then
3692 AC_DEFINE(HAVE_NS, 1, [Define to 1 if you are using the NeXTstep API, either GNUstep or Cocoa on macOS.])
3693 if test "${NS_IMPL_COCOA}" = "yes"; then
3694 AC_DEFINE(NS_IMPL_COCOA, 1, [Define to 1 if you are using NS windowing under macOS.])
3696 if test "${NS_IMPL_GNUSTEP}" = "yes"; then
3697 AC_DEFINE(NS_IMPL_GNUSTEP, 1, [Define to 1 if you are using NS windowing under GNUstep.])
3698 if test $NS_GNUSTEP_CONFIG != yes; then
3699 # See also .m.o rule in src/Makefile.in. */
3700 # FIXME: are all these flags really needed? Document here why. */
3701 GNUSTEP_CFLAGS="-D_REENTRANT -fPIC -fno-strict-aliasing -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
3702 ## Extra CFLAGS applied to src/*.m files.
3703 GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -fgnu-runtime -Wno-import -fconstant-string-class=NSConstantString -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGSWARN -DGSDIAGNOSE"
3709 ### Use session management (-lSM -lICE) if available
3712 if test "${HAVE_X11}" = "yes"; then
3713 AC_CHECK_HEADER(X11/SM/SMlib.h,
3714 [AC_CHECK_LIB(SM, SmcOpenConnection, HAVE_X_SM=yes, , -lICE)])
3716 if test "${HAVE_X_SM}" = "yes"; then
3717 AC_DEFINE(HAVE_X_SM, 1, [Define to 1 if you have the SM library (-lSM).])
3723 ### Use XRandr (-lXrandr) if available
3725 if test "${HAVE_X11}" = "yes"; then
3726 XRANDR_REQUIRED=1.2.2
3727 XRANDR_MODULES="xrandr >= $XRANDR_REQUIRED"
3728 EMACS_CHECK_MODULES([XRANDR], [$XRANDR_MODULES])
3729 if test $HAVE_XRANDR = no; then
3730 # Test old way in case pkg-config doesn't have it (older machines).
3731 # Include Xrender.h by hand to work around bug in older Xrandr.h
3732 # (e.g. RHEL5) and silence (harmless) configure warning (bug#18465).
3733 AC_CHECK_HEADER(X11/extensions/Xrandr.h,
3734 [AC_CHECK_LIB(Xrandr, XRRGetScreenResources, HAVE_XRANDR=yes)],
3735 [], [AC_INCLUDES_DEFAULT
3736 #include <X11/extensions/Xrender.h>])
3737 if test $HAVE_XRANDR = yes; then
3738 XRANDR_LIBS=-lXrandr
3741 if test $HAVE_XRANDR = yes; then
3742 AC_DEFINE(HAVE_XRANDR, 1, [Define to 1 if you have the XRandr extension.])
3745 AC_SUBST(XRANDR_CFLAGS)
3746 AC_SUBST(XRANDR_LIBS)
3748 ### Use Xinerama (-lXinerama) if available
3750 if test "${HAVE_X11}" = "yes"; then
3751 XINERAMA_REQUIRED=1.0.2
3752 XINERAMA_MODULES="xinerama >= $XINERAMA_REQUIRED"
3753 EMACS_CHECK_MODULES([XINERAMA], [$XINERAMA_MODULES])
3754 if test $HAVE_XINERAMA = no; then
3755 # Test old way in case pkg-config doesn't have it (older machines).
3756 AC_CHECK_HEADER(X11/extensions/Xinerama.h,
3757 [AC_CHECK_LIB(Xinerama, XineramaQueryExtension, HAVE_XINERAMA=yes)])
3758 if test $HAVE_XINERAMA = yes; then
3759 XINERAMA_LIBS=-lXinerama
3762 if test $HAVE_XINERAMA = yes; then
3763 AC_DEFINE(HAVE_XINERAMA, 1, [Define to 1 if you have the Xinerama extension.])
3766 AC_SUBST(XINERAMA_CFLAGS)
3767 AC_SUBST(XINERAMA_LIBS)
3769 ### Use Xfixes (-lXfixes) if available
3771 if test "${HAVE_X11}" = "yes"; then
3772 XFIXES_REQUIRED=4.0.0
3773 XFIXES_MODULES="xfixes >= $XFIXES_REQUIRED"
3774 EMACS_CHECK_MODULES([XFIXES], [$XFIXES_MODULES])
3775 if test $HAVE_XFIXES = no; then
3776 # Test old way in case pkg-config doesn't have it (older machines).
3777 AC_CHECK_HEADER(X11/extensions/Xfixes.h,
3778 [AC_CHECK_LIB(Xfixes, XFixesHideCursor, HAVE_XFIXES=yes)])
3779 if test $HAVE_XFIXES = yes; then
3780 XFIXES_LIBS=-lXfixes
3783 if test $HAVE_XFIXES = yes; then
3784 AC_DEFINE(HAVE_XFIXES, 1, [Define to 1 if you have the Xfixes extension.])
3787 AC_SUBST(XFIXES_CFLAGS)
3788 AC_SUBST(XFIXES_LIBS)
3790 ### Use Xdbe (-lXdbe) if available
3792 if test "${HAVE_X11}" = "yes"; then
3793 AC_CHECK_HEADER(X11/extensions/Xdbe.h,
3794 [AC_CHECK_LIB(Xext, XdbeAllocateBackBufferName, HAVE_XDBE=yes)],
3796 [#include <X11/Xlib.h>
3798 if test $HAVE_XDBE = yes; then
3801 if test $HAVE_XDBE = yes; then
3802 AC_DEFINE(HAVE_XDBE, 1, [Define to 1 if you have the Xdbe extension.])
3805 AC_SUBST(XDBE_CFLAGS)
3808 ### Use libxml (-lxml2) if available
3809 ### mingw32 doesn't use -lxml2, since it loads the library dynamically.
3811 if test "${with_xml2}" != "no"; then
3812 ### I'm not sure what the version number should be, so I just guessed.
3813 EMACS_CHECK_MODULES([LIBXML2], [libxml-2.0 > 2.6.17])
3814 # Built-in libxml2 on OS X 10.8 lacks libxml-2.0.pc.
3815 if test "${HAVE_LIBXML2}" != "yes" && test "$opsys" = "darwin"; then
3816 SAVE_CPPFLAGS="$CPPFLAGS"
3817 if test -z "$xcsdkdir" -a -n "$XCRUN" -a ! -d /usr/include; then
3818 dnl /usr/include is not found. Try Xcode SDK dir if it is sane.
3819 xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
3821 *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
3825 CPPFLAGS="$CPPFLAGS -I$xcsdkdir/usr/include/libxml2"
3826 AC_CHECK_HEADER(libxml/HTMLparser.h,
3827 [AC_CHECK_DECL(HTML_PARSE_RECOVER, HAVE_LIBXML2=yes, ,
3828 [#include <libxml/HTMLparser.h>])])
3829 CPPFLAGS="$SAVE_CPPFLAGS"
3830 if test "${HAVE_LIBXML2}" = "yes"; then
3831 LIBXML2_CFLAGS="-I'$xcsdkdir/usr/include/libxml2'"
3832 LIBXML2_LIBS="-lxml2"
3835 if test "${HAVE_LIBXML2}" = "yes"; then
3836 if test "${opsys}" != "mingw32"; then
3837 AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no,
3842 if test "${HAVE_LIBXML2}" = "yes"; then
3843 AC_DEFINE(HAVE_LIBXML2, 1, [Define to 1 if you have the libxml library (-lxml2).])
3850 AC_SUBST(LIBXML2_LIBS)
3851 AC_SUBST(LIBXML2_CFLAGS)
3855 if test ! "$with_mailutils"; then
3856 # Check for mail-locking functions in a "mail" library. Probably this should
3857 # have the same check as for liblockfile below.
3858 AC_CHECK_LIB([mail], [maillock], [have_mail=yes], [have_mail=no])
3859 if test $have_mail = yes; then
3861 AC_DEFINE([HAVE_LIBMAIL], [1],
3862 [Define to 1 if you have the 'mail' library (-lmail).])
3865 LIBS="$LIBS_MAIL $LIBS"
3866 AC_CHECK_FUNCS([touchlock])
3869 dnl Debian, at least:
3870 AC_CHECK_LIB([lockfile], [maillock], [have_lockfile=yes], [have_lockfile=no])
3871 if test $have_lockfile = yes; then
3872 LIBS_MAIL=-llockfile
3873 AC_DEFINE([HAVE_LIBLOCKFILE], [1],
3874 [Define to 1 if you have the 'lockfile' library (-llockfile).])
3876 # If we have the shared liblockfile, assume we must use it for mail
3877 # locking (e.g. Debian). If we couldn't link against liblockfile
3878 # (no liblockfile.a installed), ensure that we don't need to.
3879 dnl This works for files generally, not just executables.
3880 dnl Should we look elsewhere for it? Maybe examine /etc/ld.so.conf?
3881 AC_CHECK_PROG([liblockfile], [liblockfile.so], [yes], [no],
3882 [/usr/lib:/lib:/usr/local/lib:$LD_LIBRARY_PATH])
3883 if test "$ac_cv_prog_liblockfile" = yes; then
3884 AC_MSG_ERROR([Shared liblockfile found but can't link against it.
3885 This probably means that movemail could lose mail.
3886 There may be a 'development' package to install containing liblockfile.])
3889 AC_CHECK_HEADERS([maillock.h])
3891 ## Define MAIL_USE_FLOCK (or LOCKF) if the mailer uses flock (or lockf) to
3892 ## interlock access to the mail spool. The alternative is a lock file named
3893 ## /usr/spool/mail/$USER.lock.
3896 aix4-2) mail_lock="lockf" ;;
3898 gnu|freebsd|dragonfly|netbsd|openbsd|darwin) mail_lock="flock" ;;
3900 ## On GNU/Linux systems, both methods are used by various mail programs.
3901 ## I assume most people are using newer mailers that have heard of flock.
3902 ## Change this if you need to.
3903 ## Debian contains a patch which says: "On Debian/GNU/Linux systems,
3904 ## configure gets the right answers, and that means *NOT* using flock.
3905 ## Using flock is guaranteed to be the wrong thing. See Debian Policy
3906 ## for details." and then uses '#ifdef DEBIAN'. Unfortunately the
3907 ## Debian maintainer hasn't provided a clean fix for Emacs.
3908 ## movemail.c will use 'maillock' when MAILDIR, HAVE_LIBMAIL and
3909 ## HAVE_MAILLOCK_H are defined, so the following appears to be the
3910 ## correct logic. -- fx
3911 ## We must check for HAVE_LIBLOCKFILE too, as movemail does.
3912 ## liblockfile is a Free Software replacement for libmail, used on
3913 ## Debian systems and elsewhere. -rfr.
3916 if test $have_mail = yes || test $have_lockfile = yes; then
3917 test $ac_cv_header_maillock_h = yes && mail_lock=no
3921 mail_lock="none-needed" ;;
3925 flock) AC_DEFINE([MAIL_USE_FLOCK], [1],
3926 [Define if the mailer uses flock to interlock the mail spool.]);;
3928 lockf) AC_DEFINE([MAIL_USE_LOCKF], [1],
3929 [Define if the mailer uses lockf to interlock the mail spool.]);;
3933 *) BLESSMAIL_TARGET="need-blessmail" ;;
3936 AC_SUBST([BLESSMAIL_TARGET])
3937 AC_SUBST([LIBS_MAIL])
3940 LIBS="$LIB_PTHREAD $LIB_MATH $LIBS"
3941 AC_CHECK_FUNCS(accept4 fchdir gethostname \
3942 getrusage get_current_dir_name \
3943 lrand48 random rint trunc \
3944 select getpagesize setlocale newlocale \
3945 getrlimit setrlimit shutdown \
3946 pthread_sigmask strsignal setitimer \
3947 sendto recvfrom getsockname getifaddrs freeifaddrs \
3949 getpwent endpwent getgrent endgrent \
3950 cfmakeraw cfsetspeed __executable_start log2 prctl)
3953 dnl No need to check for posix_memalign if aligned_alloc works.
3954 AC_CHECK_FUNCS([aligned_alloc posix_memalign], [break])
3955 AC_CHECK_DECLS([aligned_alloc], [], [], [[#include <stdlib.h>]])
3957 dnl Cannot use AC_CHECK_FUNCS
3958 AC_CACHE_CHECK([for __builtin_frame_address],
3959 [emacs_cv_func___builtin_frame_address],
3960 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_frame_address (0);])],
3961 [emacs_cv_func___builtin_frame_address=yes],
3962 [emacs_cv_func___builtin_frame_address=no])])
3963 if test $emacs_cv_func___builtin_frame_address = yes; then
3964 AC_DEFINE([HAVE___BUILTIN_FRAME_ADDRESS], 1,
3965 [Define to 1 if you have the '__builtin_frame_address' function.])
3967 AC_CACHE_CHECK([for __builtin_unwind_init],
3968 emacs_cv_func___builtin_unwind_init,
3969 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_unwind_init ();])],
3970 emacs_cv_func___builtin_unwind_init=yes,
3971 emacs_cv_func___builtin_unwind_init=no)])
3972 if test $emacs_cv_func___builtin_unwind_init = yes; then
3973 AC_DEFINE(HAVE___BUILTIN_UNWIND_INIT, 1,
3974 [Define to 1 if you have the '__builtin_unwind_init' function.])
3977 AC_CHECK_HEADERS_ONCE(sys/un.h)
3982 AC_CHECK_FUNCS(grantpt)
3984 # PTY-related GNU extensions.
3985 AC_CHECK_FUNCS(getpt posix_openpt)
3987 dnl Run a test program that contains a call to tputs, a call that is
3988 dnl never executed. This tests whether a pre-'main' dynamic linker
3989 dnl works with the library. It's too much trouble to actually call
3990 dnl tputs in the test program, due to portability hassles. When
3991 dnl cross-compiling, assume the test program will run if it links.
3992 AC_DEFUN([tputs_link_source], [
3994 [[extern void tputs (const char *, int, int (*)(int));
3995 int main (int argc, char **argv)
3998 tputs (argv[0], 0, 0);
4002 # Check this now, so that we will NOT find the above functions in ncurses.
4003 # That is because we have not set up to link ncurses in lib-src.
4004 # It's better to believe a function is not available
4005 # than to expect to find it in ncurses.
4006 # Also we need tputs and friends to be able to build at all.
4007 AC_CACHE_CHECK([for library containing tputs], [emacs_cv_tputs_lib],
4008 [if test "${opsys}" = "mingw32"; then
4009 emacs_cv_tputs_lib='none required'
4011 # Maybe curses should be tried earlier?
4012 # See http://debbugs.gnu.org/cgi/bugreport.cgi?bug=9736#35
4013 for tputs_library in '' tinfo ncurses terminfo termcap curses; do
4015 if test -z "$tputs_library"; then
4016 emacs_cv_tputs_lib='none required'
4018 emacs_cv_tputs_lib=-l$tputs_library
4019 LIBS="$emacs_cv_tputs_lib $LIBS"
4021 AC_RUN_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no],
4022 [AC_LINK_IFELSE([tputs_link_source], [], [emacs_cv_tputs_lib=no])])
4024 if test "X$emacs_cv_tputs_lib" != Xno; then
4029 AS_CASE(["$emacs_cv_tputs_lib"],
4030 [no], [AC_MSG_ERROR([The required function 'tputs' was not found in any library.
4031 The following libraries were tried (in order):
4032 libtinfo, libncurses, libterminfo, libtermcap, libcurses
4033 Please try installing whichever of these libraries is most appropriate
4034 for your system, together with its header files.
4035 For example, a libncurses-dev(el) or similar package.])],
4036 [-l*], [LIBS_TERMCAP=$emacs_cv_tputs_lib],
4037 [*], [LIBS_TERMCAP=])
4039 ## Use termcap instead of terminfo?
4040 ## Only true for: freebsd < 40000, ms-w32, msdos, netbsd < 599002500.
4042 ## FIXME? In the cases below where we unconditionally set
4043 ## LIBS_TERMCAP="-lncurses", this overrides LIBS_TERMCAP = -ltinfo,
4044 ## if that was found above to have tputs.
4045 ## Should we use the gnu* logic everywhere?
4047 ## darwin: Prevents crashes when running Emacs in Terminal.app under 10.2.
4048 ## The ncurses library has been moved out of the System framework in
4049 ## Mac OS X 10.2. So if configure detects it, set the command-line
4050 ## option to use it.
4051 darwin) LIBS_TERMCAP="-lncurses" ;;
4053 gnu*) test -z "$LIBS_TERMCAP" && LIBS_TERMCAP="-lncurses" ;;
4056 AC_MSG_CHECKING([whether FreeBSD is new enough to use terminfo])
4057 AC_CACHE_VAL(emacs_cv_freebsd_terminfo,
4058 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <osreldate.h>]],
4059 [[#if __FreeBSD_version < 400000
4062 ]])], emacs_cv_freebsd_terminfo=yes, emacs_cv_freebsd_terminfo=no)])
4064 AC_MSG_RESULT($emacs_cv_freebsd_terminfo)
4066 if test $emacs_cv_freebsd_terminfo = yes; then
4067 LIBS_TERMCAP="-lncurses"
4070 LIBS_TERMCAP="-ltermcap"
4080 if test "x$LIBS_TERMCAP" != "x-lterminfo"; then
4082 LIBS_TERMCAP="-ltermcap"
4086 openbsd | dragonfly) LIBS_TERMCAP="-lncurses" ;;
4088 ## hpux: Make sure we get select from libc rather than from libcurses
4089 ## because libcurses on HPUX 10.10 has a broken version of select.
4090 ## We used to use -lc -lcurses, but this may be cleaner.
4091 ## FIXME? But TERMINFO = yes on hpux (it used to be explicitly
4092 # set that way, now it uses the default). Isn't this a contradiction?
4093 hpux*) LIBS_TERMCAP="-ltermcap" ;;
4097 TERMCAP_OBJ=tparam.o
4098 if test $TERMINFO = yes; then
4099 AC_DEFINE(TERMINFO, 1, [Define to 1 if you use terminfo instead of termcap.])
4100 TERMCAP_OBJ=terminfo.o
4102 if test "X$LIBS_TERMCAP" = "X-lncurses"; then
4103 AC_DEFINE(USE_NCURSES, 1, [Define to 1 if you use ncurses.])
4105 AC_SUBST(LIBS_TERMCAP)
4106 AC_SUBST(TERMCAP_OBJ)
4108 # GNU/Linux-specific timer functions.
4109 AC_CACHE_CHECK([for timerfd interface], [emacs_cv_have_timerfd],
4111 [AC_LANG_PROGRAM([[#include <sys/timerfd.h>
4113 [[timerfd_create (CLOCK_REALTIME,
4114 TFD_CLOEXEC | TFD_NONBLOCK);
4115 timerfd_settime (0, TFD_TIMER_ABSTIME, 0, 0);]])],
4116 [emacs_cv_have_timerfd=yes],
4117 [emacs_cv_have_timerfd=no])])
4118 if test "$emacs_cv_have_timerfd" = yes; then
4119 AC_DEFINE([HAVE_TIMERFD], 1,
4120 [Define to 1 if timerfd functions are supported as in GNU/Linux.])
4123 # Alternate stack for signal handlers.
4124 AC_CACHE_CHECK([whether signals can be handled on alternate stack],
4125 [emacs_cv_alternate_stack],
4127 [AC_LANG_PROGRAM([[#include <signal.h>
4130 struct sigaction sa;
4131 ss.ss_sp = malloc (SIGSTKSZ);
4132 ss.ss_size = SIGSTKSZ;
4133 sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
4134 sigaltstack (&ss, 0);
4135 sigaction (SIGSEGV, &sa, 0);]])],
4136 [emacs_cv_alternate_stack=yes],
4137 [emacs_cv_alternate_stack=no])])
4139 # Do we need the Hesiod library to provide the support routines?
4140 dnl FIXME? Should we be skipping this on Darwin too?
4143 if test "$with_hesiod" != no ; then
4144 # Don't set $LIBS here -- see comments above. FIXME which comments?
4146 AC_CHECK_FUNC(res_send, , [AC_CHECK_FUNC(__res_send, ,
4147 [AC_CHECK_LIB(resolv, res_send, resolv=yes,
4148 [AC_CHECK_LIB(resolv, __res_send, resolv=yes)])])])
4149 if test "$resolv" = yes ; then
4155 AC_CHECK_FUNC(hes_getmailhost, , [AC_CHECK_LIB(hesiod, hes_getmailhost,
4156 hesiod=yes, :, $RESOLVLIB)])
4158 if test x"$hesiod" = xyes; then
4160 LIBRESOLV=$RESOLVLIB
4166 # These tell us which Kerberos-related libraries to use.
4173 if test "${with_kerberos}" != no; then
4175 AC_CHECK_LIB(com_err, com_err, have_com_err=yes, have_com_err=no)
4176 if test $have_com_err = yes; then
4177 COM_ERRLIB=-lcom_err
4178 LIBS="$COM_ERRLIB $LIBS"
4180 AC_CHECK_LIB(crypto, mit_des_cbc_encrypt, have_crypto=yes, have_crypto=no)
4181 if test $have_crypto = yes; then
4183 LIBS="$CRYPTOLIB $LIBS"
4185 AC_CHECK_LIB(k5crypto, mit_des_cbc_encrypt, have_k5crypto=yes, have_k5crypto=no)
4186 if test $have_k5crypto = yes; then
4187 CRYPTOLIB=-lk5crypto
4188 LIBS="$CRYPTOLIB $LIBS"
4190 AC_CHECK_LIB(krb5, krb5_init_context, have_krb5=yes, have_krb5=no)
4191 if test $have_krb5=yes; then
4193 LIBS="$KRB5LIB $LIBS"
4195 dnl FIXME Simplify. Does not match 22 logic, thanks to default_off?
4196 if test "${with_kerberos5}" = no; then
4197 AC_CHECK_LIB(des425, des_cbc_encrypt, have_des425=yes, have_des425=no )
4198 if test $have_des425 = yes; then
4200 LIBS="$DESLIB $LIBS"
4202 AC_CHECK_LIB(des, des_cbc_encrypt, have_des=yes, have_des=no)
4203 if test $have_des = yes; then
4205 LIBS="$DESLIB $LIBS"
4208 AC_CHECK_LIB(krb4, krb_get_cred, have_krb4=yes, have_krb4=no)
4209 if test $have_krb4 = yes; then
4211 LIBS="$KRB4LIB $LIBS"
4213 AC_CHECK_LIB(krb, krb_get_cred, have_krb=yes, have_krb=no)
4214 if test $have_krb = yes; then
4216 LIBS="$KRB4LIB $LIBS"
4221 if test "${with_kerberos5}" != no; then
4222 AC_CHECK_HEADERS(krb5.h,
4223 [AC_CHECK_MEMBERS([krb5_error.text, krb5_error.e_text],,,
4224 [#include <krb5.h>])])
4226 AC_CHECK_HEADERS(krb.h,,
4227 [AC_CHECK_HEADERS(kerberosIV/krb.h,,
4228 [AC_CHECK_HEADERS(kerberos/krb.h)])])
4230 AC_CHECK_HEADERS(com_err.h)
4234 AC_SUBST(COM_ERRLIB)
4240 AC_CHECK_HEADERS(valgrind/valgrind.h)
4242 AC_CHECK_MEMBERS([struct unipair.unicode], [], [], [[#include <linux/kd.h>]])
4244 AC_CHECK_FUNCS_ONCE([sbrk])
4247 AC_CHECK_FUNC(socket, , ok_so_far=no)
4248 if test $ok_so_far = yes; then
4249 AC_CHECK_HEADER(netinet/in.h, , ok_so_far=no)
4251 if test $ok_so_far = yes; then
4252 AC_CHECK_HEADER(arpa/inet.h, , ok_so_far=no)
4254 if test $ok_so_far = yes; then
4255 dnl Fixme: Not used. Should this be HAVE_SOCKETS?
4256 AC_DEFINE(HAVE_INET_SOCKETS, 1,
4257 [Define to 1 if you have inet sockets.])
4262 AC_CHECK_FUNCS(snprintf)
4264 dnl Check for glib. This differs from other library checks in that
4265 dnl Emacs need not link to glib unless some other library is already
4266 dnl linking to glib. Although glib provides no facilities that Emacs
4267 dnl needs for its own purposes, when glib is present Emacs needs to
4268 dnl use primitives like g_main_context_query to avoid clashing with
4269 dnl glib at a low level.
4271 dnl Check this late, since it depends on $GTK_CFLAGS etc.
4273 AC_CACHE_CHECK([whether GLib is linked in], [emacs_cv_links_glib],
4274 [OLDCFLAGS="$CFLAGS"
4276 CFLAGS="$CFLAGS $GTK_CFLAGS $RSVG_CFLAGS $DBUS_CFLAGS $SETTINGS_CFLAGS"
4277 LIBS="$LIBS $GTK_LIBS $RSVG_LIBS $DBUS_LIBS $SETTINGS_LIBS"
4278 CFLAGS="$CFLAGS $NOTIFY_CFLAGS $CAIRO_CFLAGS"
4279 LIBS="$LIBS $NOTIFY_LIBS $CAIRO_LIBS"
4280 AC_LINK_IFELSE([AC_LANG_PROGRAM(
4283 [[g_print ("Hello world");]])],
4284 [emacs_cv_links_glib=yes],
4285 [emacs_cv_links_glib=no])
4288 if test "${emacs_cv_links_glib}" = "yes"; then
4289 AC_DEFINE(HAVE_GLIB, 1, [Define to 1 if GLib is linked in.])
4290 if test "$HAVE_NS" = no;then
4296 dnl Adapted from Haible's version.
4297 AC_CACHE_CHECK([for nl_langinfo and CODESET], emacs_cv_langinfo_codeset,
4298 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
4299 [[char* cs = nl_langinfo(CODESET);]])],
4300 emacs_cv_langinfo_codeset=yes,
4301 emacs_cv_langinfo_codeset=no)
4303 if test $emacs_cv_langinfo_codeset = yes; then
4304 AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
4305 [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
4310 dnl Fixme: AC_SYS_POSIX_TERMIOS should probably be used, but it's not clear
4311 dnl how the tty code is related to POSIX and/or other versions of termios.
4312 dnl The following looks like a useful start.
4314 dnl AC_SYS_POSIX_TERMIOS
4315 dnl if test $ac_cv_sys_posix_termios = yes; then
4316 dnl AC_DEFINE(HAVE_TERMIOS, 1, [Define to 1 if you have POSIX-style functions
4317 dnl and macros for terminal control.])
4318 dnl AC_DEFINE(HAVE_TCATTR, 1, [Define to 1 if you have tcgetattr and tcsetattr.])
4321 dnl Turned on June 1996 supposing nobody will mind it.
4322 dnl MinGW emulates passwd database, so this feature doesn't make sense there.
4323 if test "${opsys}" != "mingw32"; then
4324 AC_DEFINE(AMPERSAND_FULL_NAME, 1, [Define to use the convention that &
4325 in the full name stands for the login id.])
4328 dnl Everybody supports this, except MS.
4329 dnl Seems like the kind of thing we should be testing for, though.
4330 ## Note: PTYs are broken on darwin <6. Use at your own risk.
4331 if test "${opsys}" != "mingw32"; then
4332 AC_DEFINE(HAVE_PTYS, 1, [Define if the system supports pty devices.])
4335 dnl Everybody supports this, except MS-DOS.
4336 dnl Seems like the kind of thing we should be testing for, though.
4337 dnl Compare with HAVE_INET_SOCKETS (which is unused...) above.
4338 AC_DEFINE(HAVE_SOCKETS, 1, [Define if the system supports
4339 4.2-compatible sockets.])
4341 AH_TEMPLATE(INTERNAL_TERMINAL, [This is substituted when $TERM is "internal".])
4343 AH_TEMPLATE(NULL_DEVICE, [Name of the file to open to get
4344 a null file, or a data sink.])
4345 if test "${opsys}" = "mingw32"; then
4346 AC_DEFINE(NULL_DEVICE, ["NUL:"])
4348 AC_DEFINE(NULL_DEVICE, ["/dev/null"])
4351 if test "${opsys}" = "mingw32"; then
4356 AC_DEFINE_UNQUOTED(SEPCHAR, ['$SEPCHAR'], [Character that separates PATH elements.])
4357 dnl This is for MinGW, and is used in test/Makefile.in.
4358 dnl The MSYS Bash has heuristics for replacing ':' with ';' when it
4359 dnl decides that a command-line argument to be passed to a MinGW program
4360 dnl is a PATH-style list of directories. But that heuristics plays it
4361 dnl safe, and only does the replacement when it is _absolutely_ sure it
4362 dnl sees a colon-separated list of file names; e.g. ":." is left alone,
4363 dnl which breaks in-tree builds. So we do this manually instead.
4364 dnl Note that we cannot rely on PATH_SEPARATOR, as that one will always
4365 dnl be computed as ':' in MSYS Bash.
4368 dnl Everybody supports this, except MS-DOS.
4369 AC_DEFINE(subprocesses, 1, [Define to enable asynchronous subprocesses.])
4371 AC_DEFINE(USER_FULL_NAME, [pw->pw_gecos], [How to get a user's full name.])
4374 AC_DEFINE(DIRECTORY_SEP, ['/'],
4375 [Character that separates directories in a file name.])
4377 if test "${opsys}" = "mingw32"; then
4378 AC_DEFINE(IS_DEVICE_SEP(_c_), [((_c_) == ':')],
4379 [Returns true if character is a device separator.])
4381 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == '/' || (_c_) == '\\')],
4382 [Returns true if character is a directory separator.])
4384 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP(_c_))],
4385 [Returns true if character is any form of separator.])
4387 AC_DEFINE(IS_DEVICE_SEP(_c_), 0,
4388 [Returns true if character is a device separator.])
4390 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == DIRECTORY_SEP)],
4391 [Returns true if character is a directory separator.])
4393 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_))],
4394 [Returns true if character is any form of separator.])
4397 if test "$USE_X_TOOLKIT" != "none"; then
4401 dnl Assar Westerlund <assar@sics.se> says this is necessary
4402 dnl for HP-UX 10.20, and that it works for HP-UX 0 as well.
4406 if test "$have_editres" != no && test ! -z "$LIBXMU"; then
4408 dnl See libXmu.a check above.
4409 if test x$HAVE_X11XTR6 = xyes; then
4410 LIBS="-lXt -lSM -lICE $LIBXMU"
4412 OTHERLIBS="-lXt -$LIBXMU"
4415 [#include <X11/Intrinsic.h>
4416 #include <X11/Xmu/Editres.h>],
4417 [_XEditResCheckMessages (0, 0, 0, 0);],
4418 [AC_DEFINE([X_TOOLKIT_EDITRES], 1,
4419 [Define to 1 if we should use XEditRes.])])
4426 dnl Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
4427 dnl instead, there's a system variable _sys_nsig. Unfortunately, we
4428 dnl need the constant to dimension an array. So wire in the appropriate
4430 AC_DEFINE(NSIG_MINIMUM, 32, [Minimum value of NSIG.])
4434 emacs_broken_SIGIO=no
4437 dnl SIGIO exists, but the feature doesn't work in the way Emacs needs.
4438 dnl See eg <http://article.gmane.org/gmane.os.openbsd.ports/46831>.
4439 hpux* | nacl | openbsd | sol2* | unixware )
4440 emacs_broken_SIGIO=yes
4444 dnl On AIX Emacs uses the gmalloc.c malloc implementation. But given
4445 dnl the way this system works, libc functions that return malloced
4446 dnl memory use the libc malloc implementation. Calling xfree or
4447 dnl xrealloc on the results of such functions results in a crash.
4449 dnl One solution for this could be to define SYSTEM_MALLOC in configure,
4450 dnl but that does not currently work on this system.
4452 dnl It is possible to completely override the malloc implementation on
4453 dnl AIX, but that involves putting the malloc functions in a shared
4454 dnl library and setting the MALLOCTYPE environment variable to point to
4455 dnl that shared library.
4457 dnl Emacs currently calls xrealloc on the results of get_current_dir name,
4458 dnl to avoid a crash just use the Emacs implementation for that function.
4460 dnl FIXME We could change the AC_CHECK_FUNCS call near the start
4461 dnl of this file, so that we do not check for get_current_dir_name
4462 dnl on AIX. But that might be fragile if something else ends
4463 dnl up testing for get_current_dir_name as a dependency.
4464 AC_DEFINE(BROKEN_GET_CURRENT_DIR_NAME, 1, [Define if
4465 get_current_dir_name should not be used.])
4469 dnl Circumvent a bug in FreeBSD. In the following sequence of
4470 dnl writes/reads on a PTY, read(2) returns bogus data:
4472 dnl write(2) 1022 bytes
4473 dnl write(2) 954 bytes, get EAGAIN
4474 dnl read(2) 1024 bytes in process_read_output
4475 dnl read(2) 11 bytes in process_read_output
4477 dnl That is, read(2) returns more bytes than have ever been written
4478 dnl successfully. The 1033 bytes read are the 1022 bytes written
4479 dnl successfully after processing (for example with CRs added if the
4480 dnl terminal is set up that way which it is here). The same bytes will
4481 dnl be seen again in a later read(2), without the CRs.
4482 AC_DEFINE(BROKEN_PTY_READ_AFTER_EAGAIN, 1, [Define on FreeBSD to
4483 work around an issue when reading from a PTY.])
4489 dnl FIXME Can't we test if this exists (eg /proc/$$)?
4490 AC_DEFINE(HAVE_PROCFS, 1, [Define if you have the /proc filesystem.])
4495 darwin | dragonfly | freebsd | netbsd | openbsd )
4496 AC_DEFINE(DONT_REOPEN_PTY, 1, [Define if process.c does not need to
4497 close a pty to make it a controlling terminal (it is already a
4498 controlling terminal of the subprocess, because we did ioctl TIOCSCTTY).])
4502 dnl FIXME Surely we can test for this rather than hard-code it.
4504 netbsd | openbsd) sound_device="/dev/audio" ;;
4505 *) sound_device="/dev/dsp" ;;
4509 AC_DEFINE_UNQUOTED(DEFAULT_SOUND_DEVICE, "$sound_device",
4510 [Name of the default sound device.])
4513 dnl Emacs can read input using SIGIO and buffering characters itself,
4514 dnl or using CBREAK mode and making C-g cause SIGINT.
4515 dnl The choice is controlled by the variable interrupt_input.
4517 dnl Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
4519 dnl Emacs uses the presence of the USABLE_SIGIO macro
4520 dnl to indicate whether or not signal-driven I/O is possible. It uses
4521 dnl INTERRUPT_INPUT to decide whether to use it by default.
4523 dnl SIGIO can be used only on systems that implement it (4.2 and 4.3).
4524 dnl CBREAK mode has two disadvantages
4525 dnl 1) At least in 4.2, it is impossible to handle the Meta key properly.
4526 dnl I hear that in system V this problem does not exist.
4527 dnl 2) Control-G causes output to be discarded.
4528 dnl I do not know whether this can be fixed in system V.
4530 dnl Another method of doing input is planned but not implemented.
4531 dnl It would have Emacs fork off a separate process
4532 dnl to read the input and send it to the true Emacs process
4535 darwin | gnu-linux | gnu-kfreebsd )
4536 AC_DEFINE(INTERRUPT_INPUT, 1, [Define to read input using SIGIO.])
4541 dnl If the system's imake configuration file defines 'NeedWidePrototypes'
4542 dnl as 'NO', we must define NARROWPROTO manually. Such a define is
4543 dnl generated in the Makefile generated by 'xmkmf'. If we don't define
4544 dnl NARROWPROTO, we will see the wrong function prototypes for X functions
4545 dnl taking float or double parameters.
4547 cygwin|gnu|gnu-linux|gnu-kfreebsd|freebsd|netbsd|openbsd)
4548 AC_DEFINE(NARROWPROTO, 1, [Define if system's imake configuration
4549 file defines 'NeedWidePrototypes' as 'NO'.])
4554 dnl Used in process.c, this must be a loop, even if it only runs once.
4555 AH_TEMPLATE(PTY_ITERATION, [How to iterate over PTYs.])
4556 dnl Only used if !PTY_ITERATION. Iterate from FIRST_PTY_LETTER to z,
4557 dnl trying suffixes 0-16.
4558 AH_TEMPLATE(FIRST_PTY_LETTER, [Letter to use in finding device name of
4559 first PTY, if PTYs are supported.])
4560 AH_TEMPLATE(PTY_OPEN, [How to open a PTY, if non-standard.])
4561 AH_TEMPLATE(PTY_NAME_SPRINTF, [How to get the device name of the control
4562 end of a PTY, if non-standard.])
4563 AH_TEMPLATE(PTY_TTY_NAME_SPRINTF, [How to get device name of the tty
4564 end of a PTY, if non-standard.])
4568 AC_DEFINE(PTY_ITERATION, [int c; for (c = 0; !c ; c++)])
4569 dnl You allocate a pty by opening /dev/ptc to get the master side.
4570 dnl To get the name of the slave side, you just ttyname() the master side.
4571 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptc");])
4572 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [strcpy (pty_name, ttyname (fd));])
4576 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4577 dnl multi-line AC_DEFINEs are hard. :(
4578 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)])
4579 AC_DEFINE(PTY_NAME_SPRINTF, [])
4580 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
4584 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4587 gnu-linux | gnu-kfreebsd | dragonfly | freebsd | netbsd | darwin | nacl )
4589 if test "x$ac_cv_func_grantpt" = xyes; then
4590 AC_DEFINE(UNIX98_PTYS, 1, [Define if the system has Unix98 PTYs.])
4591 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4592 dnl Note that grantpt and unlockpt may fork. We must block SIGCHLD
4593 dnl to prevent sigchld_handler from intercepting the child's death.
4594 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); }])
4595 dnl if HAVE_POSIX_OPENPT
4596 if test "x$ac_cv_func_posix_openpt" = xyes; then
4597 AC_DEFINE(PTY_OPEN, [do { fd = posix_openpt (O_RDWR | O_CLOEXEC | O_NOCTTY); if (fd < 0 && errno == EINVAL) fd = posix_openpt (O_RDWR | O_NOCTTY); } while (false)])
4598 AC_DEFINE(PTY_NAME_SPRINTF, [])
4600 elif test "x$ac_cv_func_getpt" = xyes; then
4601 AC_DEFINE(PTY_OPEN, [fd = getpt ()])
4602 AC_DEFINE(PTY_NAME_SPRINTF, [])
4604 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4607 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4612 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4613 AC_DEFINE(PTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/ptym/pty%c%x", c, i);])
4614 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/pty/tty%c%x", c, i);])
4618 dnl On SysVr4, grantpt(3) forks a subprocess, so do not use
4619 dnl O_CLOEXEC when opening the pty, and keep the SIGCHLD handler
4620 dnl from intercepting that death. If any child but grantpt's should die
4621 dnl within, it should be caught after sigrelse(2).
4622 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4623 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); }])
4627 dnl Comments are as per sol2*.
4628 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4629 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); }])
4636 dnl This change means that we don't loop through allocate_pty too
4637 dnl many times in the (rare) event of a failure.
4638 AC_DEFINE(FIRST_PTY_LETTER, ['z'])
4639 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4640 dnl Push various streams modules onto a PTY channel. Used in process.c.
4641 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.])
4646 AH_TEMPLATE(SIGNALS_VIA_CHARACTERS, [Make process_send_signal work by
4647 "typing" a signal character on the pty.])
4650 dnl Perry Smith <pedz@ddivt1.austin.ibm.com> says this is correct for AIX.
4651 aix4-2 | cygwin | gnu | dragonfly | freebsd | netbsd | openbsd | darwin )
4652 AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4655 dnl 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works.
4656 dnl FIXME Does gnu-kfreebsd have linux/version.h? It seems unlikely...
4657 gnu-linux | gnu-kfreebsd )
4659 AC_CACHE_CHECK([for signals via characters], [emacs_cv_signals_via_chars],
4660 [AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4661 #include <linux/version.h>
4662 #if LINUX_VERSION_CODE < 0x20400
4663 # error "Linux version too old"
4665 ]], [[]])], emacs_cv_signals_via_chars=yes, emacs_cv_signals_via_chars=no)])
4667 test "$emacs_cv_signals_via_chars" = yes && AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4672 AH_TEMPLATE(TAB3, [Undocumented.])
4675 darwin) AC_DEFINE(TAB3, OXTABS) ;;
4677 gnu | dragonfly | freebsd | netbsd | openbsd )
4678 AC_DEFINE(TABDLY, OXTABS, [Undocumented.])
4679 AC_DEFINE(TAB3, OXTABS)
4682 gnu-linux | gnu-kfreebsd )
4683 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4687 ]], [[]])], AC_DEFINE(GC_MARK_SECONDARY_STACK(),
4688 [do { extern void *__libc_ia64_register_backing_store_base; __builtin_ia64_flushrs (); mark_memory (__libc_ia64_register_backing_store_base, __builtin_ia64_bsp ());} while (false)],
4689 [Mark a secondary stack, like the register stack on the ia64.]), [])
4693 AC_DEFINE(RUN_TIME_REMAP, 1, [Define if emacs.c needs to call
4694 run_time_remap; for HPUX.])
4699 dnl This won't be used automatically yet. We also need to know, at least,
4700 dnl that the stack is continuous.
4701 AH_TEMPLATE(GC_SETJMP_WORKS, [Define if setjmp is known to save all
4702 registers relevant for conservative garbage collection in the jmp_buf.])
4706 dnl Not all the architectures are tested, but there are Debian packages
4707 dnl for SCM and/or Guile on them, so the technique must work. See also
4708 dnl comments in alloc.c concerning setjmp and gcc.
4709 dnl Fixme: it's probably safe to just use the GCC conditional below.
4710 gnu-linux | gnu-kfreebsd )
4711 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4712 #if defined __i386__ || defined __sparc__ || defined __mc68000__ \
4713 || defined __alpha__ || defined __mips__ || defined __s390__ \
4714 || defined __arm__ || defined __powerpc__ || defined __amd64__ \
4715 || defined __ia64__ || defined __sh__
4718 # error "setjmp not known to work on this arch"
4720 ]], [[]])], AC_DEFINE(GC_SETJMP_WORKS, 1))
4725 if test x$GCC = xyes; then
4726 dnl GC_SETJMP_WORKS is nearly always appropriate for GCC.
4727 AC_DEFINE(GC_SETJMP_WORKS, 1)
4730 aix* | dragonfly | freebsd | netbsd | openbsd | sol2* )
4731 AC_DEFINE(GC_SETJMP_WORKS, 1)
4736 dnl In a weird quirk, MS runtime uses _setjmp and longjmp.
4737 AC_CACHE_CHECK([for _setjmp], [emacs_cv_func__setjmp],
4740 [[#include <setjmp.h>
4742 # define _longjmp longjmp
4747 _longjmp (j, 1);]])],
4748 [emacs_cv_func__setjmp=yes],
4749 [emacs_cv_func__setjmp=no])])
4750 if test $emacs_cv_func__setjmp = yes; then
4751 AC_DEFINE([HAVE__SETJMP], 1, [Define to 1 if _setjmp and _longjmp work.])
4754 # We need to preserve signal mask to handle C stack overflows.
4755 AC_CACHE_CHECK([for sigsetjmp], [emacs_cv_func_sigsetjmp],
4758 [[#include <setjmp.h>
4761 if (! sigsetjmp (j, 1))
4762 siglongjmp (j, 1);]])],
4763 [emacs_cv_func_sigsetjmp=yes],
4764 [emacs_cv_func_sigsetjmp=no])])
4765 if test $emacs_cv_func_sigsetjmp = yes; then
4766 AC_DEFINE([HAVE_SIGSETJMP], 1,
4767 [Define to 1 if sigsetjmp and siglongjmp work.])
4770 case $emacs_cv_func_sigsetjmp,$emacs_cv_alternate_stack,$opsys in
4771 yes,yes,* | *,*,mingw32)
4772 AC_DEFINE([HAVE_STACK_OVERFLOW_HANDLING], 1,
4773 [Define to 1 if C stack overflow can be handled in some cases.]);;
4778 dnl TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
4779 dnl subprocesses the usual way. But TIOCSIGNAL does work for PTYs,
4780 dnl and this is all we need.
4781 AC_DEFINE(TIOCSIGSEND, TIOCSIGNAL, [Some platforms redefine this.])
4788 dnl Used in xfaces.c.
4789 AC_DEFINE(XOS_NEEDS_TIME_H, 1, [Compensate for a bug in Xos.h on
4790 some systems, where it requires time.h.])
4795 dnl Define symbols to identify the version of Unix this is.
4796 dnl Define all the symbols that apply correctly.
4797 AH_TEMPLATE(DOS_NT, [Define if the system is MS DOS or MS Windows.])
4798 AH_TEMPLATE(MSDOS, [Define if the system is MS DOS.])
4799 AH_TEMPLATE(USG, [Define if the system is compatible with System III.])
4800 AH_TEMPLATE(USG5_4, [Define if the system is compatible with System V Release 4.])
4805 dnl This symbol should be defined on AIX Version 3 ???????
4806 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4808 # error "_AIX not defined"
4810 ]], [[]])], [], AC_DEFINE(_AIX, [], [Define if the system is AIX.]))
4814 AC_DEFINE(CYGWIN, 1, [Define if the system is Cygwin.])
4818 dnl Not __APPLE__, as this may not be defined on non-macOS Darwin.
4819 dnl Not DARWIN, because Panther and lower CoreFoundation.h use DARWIN to
4820 dnl distinguish macOS from pure Darwin.
4821 AC_DEFINE(DARWIN_OS, [], [Define if the system is Darwin.])
4824 gnu-linux | gnu-kfreebsd )
4826 AC_DEFINE(GNU_LINUX, [], [Define if ths system is compatible with GNU/Linux.])
4831 AC_DEFINE(HPUX, [], [Define if the system is HPUX.])
4835 AC_DEFINE(DOS_NT, [])
4836 AC_DEFINE(WINDOWSNT, 1, [Define if compiling for native MS Windows.])
4837 if test "x$ac_enable_checking" != "x" ; then
4838 AC_DEFINE(EMACSDEBUG, 1, [Define to 1 to enable w32 debug facilities.])
4844 AC_DEFINE(USG5_4, [])
4845 AC_DEFINE(SOLARIS2, [], [Define if the system is Solaris.])
4850 AC_DEFINE(USG5_4, [])
4854 AC_CACHE_CHECK([for usable FIONREAD], [emacs_cv_usable_FIONREAD],
4857 dnl BUILD 9008 - FIONREAD problem still exists in X-Windows.
4858 emacs_cv_usable_FIONREAD=no
4862 emacs_cv_usable_FIONREAD=yes
4867 [AC_LANG_PROGRAM([[#include <sys/types.h>
4868 #include <sys/ioctl.h>
4870 # include <sys/filio.h>
4873 [[int foo = ioctl (0, FIONREAD, &foo);]])],
4874 [emacs_cv_usable_FIONREAD=yes],
4875 [emacs_cv_usable_FIONREAD=no])
4878 if test $emacs_cv_usable_FIONREAD = yes; then
4879 AC_DEFINE([USABLE_FIONREAD], [1], [Define to 1 if FIONREAD is usable.])
4881 if test $emacs_broken_SIGIO = no; then
4882 AC_CACHE_CHECK([for usable SIGIO], [emacs_cv_usable_SIGIO],
4884 [AC_LANG_PROGRAM([[#include <fcntl.h>
4887 [[int foo = SIGIO | F_SETFL | FASYNC;]])],
4888 [emacs_cv_usable_SIGIO=yes],
4889 [emacs_cv_usable_SIGIO=no])],
4890 [emacs_cv_usable_SIGIO=yes],
4891 [emacs_cv_usable_SIGIO=no])
4892 if test $emacs_cv_usable_SIGIO = yes; then
4893 AC_DEFINE([USABLE_SIGIO], [1], [Define to 1 if SIGIO is usable.])
4900 dnl It works to open the pty's tty in the parent (Emacs), then
4901 dnl close and reopen it in the child.
4902 AC_DEFINE(USG_SUBTTY_WORKS, 1, [Define for USG systems where it
4903 works to open a pty's tty in the parent process, then close and
4904 reopen it in the child.])
4908 AC_DEFINE(_STRUCTURED_PROC, 1, [Needed for system_process_attributes
4913 # Set up the CFLAGS for real compilation, so we can substitute it.
4914 CFLAGS="$REAL_CFLAGS"
4915 CPPFLAGS="$REAL_CPPFLAGS"
4918 ## Hack to detect a buggy GCC version.
4919 if test "$GCC" = yes && \
4920 $CC --version 2> /dev/null | grep 'gcc.* 4.5.0' >/dev/null; then
4922 *-fno-optimize-sibling-calls*) ;;
4924 AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS.]);;
4928 version=$PACKAGE_VERSION
4930 copyright="Copyright (C) 2017 Free Software Foundation, Inc."
4931 AC_DEFINE_UNQUOTED(COPYRIGHT, ["$copyright"],
4932 [Short copyright string for this version of Emacs.])
4935 ### Specify what sort of things we'll be editing into Makefile and config.h.
4936 ### Use configuration here uncanonicalized to avoid exceeding size limits.
4938 AC_SUBST(configuration)
4943 AC_SUBST(exec_prefix)
4946 AC_SUBST(sharedstatedir)
4947 AC_SUBST(libexecdir)
4951 AC_SUBST(standardlisppath)
4952 AC_SUBST(locallisppath)
4954 AC_SUBST(x_default_search_path)
4956 AC_SUBST(archlibdir)
4962 ## FIXME? Nothing uses @LD_SWITCH_X_SITE@.
4963 ## src/Makefile.in did add LD_SWITCH_X_SITE (as a cpp define) to the
4964 ## end of LIBX_BASE, but nothing ever set it.
4965 AC_SUBST(LD_SWITCH_X_SITE)
4966 AC_SUBST(C_SWITCH_X_SITE)
4967 AC_SUBST(GNUSTEP_CFLAGS)
4969 ## Used in lwlib/Makefile.in.
4970 AC_SUBST(X_TOOLKIT_TYPE)
4972 AC_SUBST(ns_appbindir)
4973 AC_SUBST(ns_appresdir)
4975 AC_SUBST(GNU_OBJC_CFLAGS)
4976 AC_SUBST(OTHER_FILES)
4978 if test -n "${term_header}"; then
4979 AC_DEFINE_UNQUOTED(TERM_HEADER, "${term_header}",
4980 [Define to the header for the built-in window system.])
4983 AC_DEFINE_UNQUOTED(EMACS_CONFIGURATION, "${canonical}",
4984 [Define to the canonical Emacs configuration name.])
4985 AC_DEFINE_UNQUOTED(EMACS_CONFIG_OPTIONS, "${emacs_config_options}",
4986 [Define to the options passed to configure.])
4991 if test "${HAVE_X_WINDOWS}" = "yes" ; then
4992 AC_DEFINE(HAVE_X_WINDOWS, 1,
4993 [Define to 1 if you want to use the X window system.])
4995 XOBJ="xterm.o xfns.o xselect.o xrdb.o xsmfns.o xsettings.o"
4997 if test "$HAVE_CAIRO" = "yes"; then
4998 FONT_OBJ="ftfont.o ftcrfont.o"
4999 elif test "$HAVE_XFT" = "yes"; then
5000 FONT_OBJ="$FONT_OBJ ftfont.o xftfont.o ftxfont.o"
5001 elif test "$HAVE_FREETYPE" = "yes"; then
5002 FONT_OBJ="$FONT_OBJ ftfont.o ftxfont.o"
5012 if test "${USE_X_TOOLKIT}" != "none" ; then
5014 AC_DEFINE(USE_X_TOOLKIT, 1, [Define to 1 if using an X toolkit.])
5015 if test "${USE_X_TOOLKIT}" = "LUCID"; then
5016 AC_DEFINE(USE_LUCID, 1, [Define to 1 if using the Lucid X toolkit.])
5017 elif test "${USE_X_TOOLKIT}" = "MOTIF"; then
5018 AC_DEFINE(USE_MOTIF, 1, [Define to 1 if using the Motif X toolkit.])
5022 ## Paul Abrahams <abrahams at equinox.shaysnet.com> says this is needed.
5023 MOTIF_LIBW="$MOTIF_LIBW -lXpm"
5027 ## Richard Anthony Ryan <ryanr at ellingtn.ftc.nrcs.usda.gov>
5028 ## says -lXimp is needed in UNIX_SV ... 4.2 1.1.2.
5029 MOTIF_LIBW="MOTIF_LIBW -lXimp"
5033 ## olson@mcs.anl.gov says -li18n is needed by -lXm.
5034 MOTIF_LIBW="$MOTIF_LIBW -li18n"
5037 MOTIF_LIBW="$MOTIF_LIBW $LIBXP"
5040 AC_SUBST(WIDGET_OBJ)
5043 case "$USE_X_TOOLKIT" in
5044 MOTIF) TOOLKIT_LIBW="$MOTIF_LIBW" ;;
5045 LUCID) TOOLKIT_LIBW="$LUCID_LIBW" ;;
5046 none) test "x$HAVE_GTK" = "xyes" && TOOLKIT_LIBW="$GTK_LIBS" ;;
5048 if test "$HAVE_XWIDGETS" = "yes"; then
5049 TOOLKIT_LIBW="$TOOLKIT_LIBW -lXcomposite"
5051 AC_SUBST(TOOLKIT_LIBW)
5053 if test "${opsys}" != "mingw32"; then
5054 if test "$USE_X_TOOLKIT" = "none"; then
5055 LIBXT_OTHER="\$(LIBXSM)"
5057 LIBXT_OTHER="\$(LIBXMU) -lXt \$(LIBXTR6) -lXext"
5060 AC_SUBST(LIBXT_OTHER)
5062 if test "${HAVE_X11}" = "yes" ; then
5063 AC_DEFINE(HAVE_X11, 1,
5064 [Define to 1 if you want to use version 11 of X windows.])
5065 LIBX_OTHER="\$(LIBXT) \$(LIBX_EXTRA)"
5069 AC_SUBST(LIBX_OTHER)
5072 if test "$HAVE_GTK" = yes || test "$HAVE_X11" != yes; then
5074 elif test "$USE_X_TOOLKIT" = none; then
5076 LIBXMENU='$(oldXMenudir)/libXMenu11.a'
5077 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS oldXMenu"
5079 LIBXMENU='$(lwlibdir)/liblw.a'
5080 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS lwlib"
5084 AC_CACHE_CHECK([for struct alignment],
5085 [emacs_cv_struct_alignment],
5087 [AC_LANG_PROGRAM([[#include <stddef.h>
5088 struct __attribute__ ((aligned (8))) s { char c; };
5089 struct t { char c; struct s s; };
5090 char verify[offsetof (struct t, s) == 8 ? 1 : -1];
5092 [emacs_cv_struct_alignment=yes],
5093 [emacs_cv_struct_alignment=no])])
5094 if test "$emacs_cv_struct_alignment" = yes; then
5095 AC_DEFINE([HAVE_STRUCT_ATTRIBUTE_ALIGNED], 1,
5096 [Define to 1 if 'struct __attribute__ ((aligned (N)))' aligns the
5097 structure to an N-byte boundary.])
5100 if test "${GNU_MALLOC}" = "yes" ; then
5101 AC_DEFINE(GNU_MALLOC, 1,
5102 [Define to 1 if you want to use the GNU memory allocator.])
5106 if test "${REL_ALLOC}" = "yes" ; then
5107 AC_DEFINE(REL_ALLOC, 1,
5108 [Define REL_ALLOC if you want to use the relocating allocator for
5111 test "$system_malloc" != "yes" && RALLOC_OBJ=ralloc.o
5113 AC_SUBST(RALLOC_OBJ)
5115 if test "$opsys" = "cygwin"; then
5116 CYGWIN_OBJ="cygw32.o"
5117 ## Cygwin differs because of its unexec().
5119 POST_ALLOC_OBJ=lastfile.o
5120 elif test "$opsys" = "mingw32"; then
5123 POST_ALLOC_OBJ=lastfile.o
5126 PRE_ALLOC_OBJ=lastfile.o
5129 AC_SUBST(CYGWIN_OBJ)
5130 AC_SUBST(PRE_ALLOC_OBJ)
5131 AC_SUBST(POST_ALLOC_OBJ)
5133 dnl Call this 'FORTIFY_SOUR' so that it sorts before the 'FORTIFY_SOURCE'
5134 dnl verbatim defined above. The tricky name is apropos, as this hack
5135 dnl makes Fortify go sour!
5136 AH_VERBATIM([FORTIFY_SOUR],
5137 [/* Without the following workaround, Emacs runs slowly on OS X 10.8.
5138 The workaround disables some useful run-time checking, so it
5139 should be conditional to the platforms with the performance bug.
5140 Perhaps Apple will fix this some day; also see m4/extern-inline.m4. */
5141 #if defined __APPLE__ && defined __GNUC__
5142 # ifndef _DONT_USE_CTYPE_INLINE_
5143 # define _DONT_USE_CTYPE_INLINE_
5145 # ifndef _FORTIFY_SOURCE
5146 # define _FORTIFY_SOURCE 0
5151 # If user asks to omit features, disable optional features that gnulib
5152 # might otherwise enable.
5153 if test "$with_features" = no && test "$enable_acl" != yes; then
5157 # Configure gnulib. Although this does not affect CFLAGS or LIBS permanently.
5158 # it temporarily reverts them to their pre-pkg-config values,
5159 # because gnulib needs to work with both src (which uses the
5160 # pkg-config stuff) and lib-src (which does not). For example, gnulib
5161 # may need to determine whether LIB_CLOCK_GETTIME should contain -lrt,
5162 # and it therefore needs to run in an environment where LIBS does not
5163 # already contain -lrt merely because 'pkg-config --libs' printed '-lrt'
5164 # for some package unrelated to lib-src.
5167 CFLAGS=$pre_PKG_CONFIG_CFLAGS
5168 LIBS="$LIB_PTHREAD $pre_PKG_CONFIG_LIBS"
5169 gl_ASSERT_NO_GNULIB_POSIXCHECK
5170 gl_ASSERT_NO_GNULIB_TESTS
5175 if test "${opsys}" = "mingw32"; then
5176 CPPFLAGS="$CPPFLAGS -DUSE_CRT_DLL=1 -I \${abs_top_srcdir}/nt/inc"
5177 # Remove unneeded switches from the value of CC that goes to Makefiles
5178 CC=`AS_ECHO(["$CC"]) | sed -e "s,$GCC_TEST_OPTIONS,,"`
5182 aix4-2) LD_SWITCH_SYSTEM_TEMACS="-Wl,-bnodelcsect" ;;
5184 cygwin) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000" ;;
5187 ## The -headerpad option tells ld (see man page) to leave room at the
5188 ## end of the header for adding load commands. Needed for dumping.
5189 ## 0x1000 is enough for roughly 52 load commands on the x86_64
5190 ## architecture (where they are 78 bytes each). The actual number of
5191 ## load commands added is not consistent but normally ranges from
5192 ## about 14 to about 34. Setting it high gets us plenty of slop and
5193 ## only costs about 1.5K of wasted binary space.
5194 headerpad_extra=1000
5195 if test "$HAVE_NS" = "yes"; then
5196 libs_nsgui="-framework AppKit"
5197 if test "$NS_IMPL_COCOA" = "yes"; then
5198 libs_nsgui="$libs_nsgui -framework IOKit"
5203 LD_SWITCH_SYSTEM_TEMACS="-fno-pie -prebind $libs_nsgui -Xlinker -headerpad -Xlinker $headerpad_extra"
5205 ## This is here because src/Makefile.in did some extra fiddling around
5206 ## with LD_SWITCH_SYSTEM. It seems cleaner to put this in
5207 ## LD_SWITCH_SYSTEM_TEMACS instead,
5208 test "x$LD_SWITCH_SYSTEM" = "x" && test "x$GCC" != "xyes" && \
5209 LD_SWITCH_SYSTEM_TEMACS="-X $LD_SWITCH_SYSTEM_TEMACS"
5212 ## LD_SWITCH_X_SITE_RPATH is a -rpath option saying where to
5213 ## find X at run-time.
5214 ## When handled by cpp, this was in LD_SWITCH_SYSTEM. However, at the
5215 ## point where configure sourced the s/*.h file, LD_SWITCH_X_SITE_RPATH
5216 ## had not yet been defined and was expanded to null. Hence LD_SWITCH_SYSTEM
5217 ## had different values in configure (in ac_link) and src/Makefile.in.
5218 ## It seems clearer therefore to put this piece in LD_SWITCH_SYSTEM_TEMACS.
5219 gnu*) LD_SWITCH_SYSTEM_TEMACS="\$(LD_SWITCH_X_SITE_RPATH)" ;;
5222 ## Is it any better under MinGW64 to relocate emacs into higher addresses?
5223 case "$canonical" in
5224 x86_64-*-*) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x400000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5225 *) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x01000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5229 *) LD_SWITCH_SYSTEM_TEMACS= ;;
5232 # -no-pie or -nopie fixes a temacs segfault on Gentoo, OpenBSD,
5233 # Ubuntu, and other systems with "hardened" GCC configurations for
5234 # some reason (Bug#18784). We don't know why this works, but not
5235 # segfaulting is better than segfaulting. Use ac_c_werror_flag=yes
5236 # when trying the option, otherwise clang keeps warning that it does
5237 # not understand it, and pre-4.6 GCC has a similar problem
5238 # (Bug#20338). Prefer -no-pie to -nopie, as -no-pie is the
5239 # spelling used by GCC 6.1.0 and later (Bug#24682).
5241 [for $CC option to disable position independent executables],
5242 [emacs_cv_prog_cc_no_pie],
5243 [emacs_save_c_werror_flag=$ac_c_werror_flag
5244 emacs_save_LDFLAGS=$LDFLAGS
5245 ac_c_werror_flag=yes
5246 for emacs_cv_prog_cc_no_pie in -no-pie -nopie no; do
5247 test $emacs_cv_prog_cc_no_pie = no && break
5248 LDFLAGS="$emacs_save_LDFLAGS $emacs_cv_prog_cc_no_pie"
5249 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [break])
5251 ac_c_werror_flag=$emacs_save_c_werror_flag
5252 LDFLAGS=$emacs_save_LDFLAGS])
5253 if test "$emacs_cv_prog_cc_no_pie" != no; then
5254 LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS $emacs_cv_prog_cc_no_pie"
5257 if test x$ac_enable_profiling != x ; then
5259 *freebsd | gnu-linux) ;;
5260 *) LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -pg" ;;
5264 LD_SWITCH_SYSTEM_TEMACS="$LDFLAGS_NOCOMBRELOC $LD_SWITCH_SYSTEM_TEMACS"
5266 AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
5268 ## Common for all window systems
5269 if test "$window_system" != "none"; then
5270 AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])
5271 AC_DEFINE(POLL_FOR_INPUT, 1, [Define if you poll periodically to detect C-g.])
5272 WINDOW_SYSTEM_OBJ="fontset.o fringe.o image.o"
5275 AC_SUBST(WINDOW_SYSTEM_OBJ)
5277 AH_TOP([/* GNU Emacs site configuration template file.
5279 Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2017
5280 Free Software Foundation, Inc.
5282 This file is part of GNU Emacs.
5284 GNU Emacs is free software: you can redistribute it and/or modify
5285 it under the terms of the GNU General Public License as published by
5286 the Free Software Foundation, either version 3 of the License, or (at
5287 your option) any later version.
5289 GNU Emacs is distributed in the hope that it will be useful,
5290 but WITHOUT ANY WARRANTY; without even the implied warranty of
5291 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5292 GNU General Public License for more details.
5294 You should have received a copy of the GNU General Public License
5295 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
5298 /* No code in Emacs #includes config.h twice, but some bits of code
5299 intended to work with other packages as well (like gmalloc.c)
5300 think they can include it as many times as they like. */
5301 #ifndef EMACS_CONFIG_H
5302 #define EMACS_CONFIG_H
5305 AH_BOTTOM([#include <conf_post.h>
5307 #endif /* EMACS_CONFIG_H */
5316 #### Report on what we decided to do.
5317 #### Report GTK as a toolkit, even if it doesn't use Xt.
5318 #### It makes printing result more understandable as using GTK sets
5319 #### toolkit_scroll_bars to yes by default.
5320 if test "${HAVE_GTK}" = "yes"; then
5321 USE_X_TOOLKIT="$USE_GTK_TOOLKIT"
5324 if test $USE_ACL -ne 0; then
5325 ACL_SUMMARY="yes $LIB_ACL"
5330 emacs_standard_dirs='Standard dirs'
5332 Configured for '${canonical}'.
5334 Where should the build process find the source code? ${srcdir}
5335 What compiler should emacs be built with? ${CC} ${CFLAGS}
5336 Should Emacs use the GNU version of malloc? ${GNU_MALLOC}${GNU_MALLOC_reason}
5337 Should Emacs use a relocating allocator for buffers? ${REL_ALLOC}
5338 Should Emacs use mmap(2) for buffer allocation? $use_mmap_for_buffers
5339 What window system should Emacs use? ${window_system}
5340 What toolkit should Emacs use? ${USE_X_TOOLKIT}
5341 Where do we find X Windows header files? ${x_includes:-$emacs_standard_dirs}
5342 Where do we find X Windows libraries? ${x_libraries:-$emacs_standard_dirs}"])
5345 emacs_config_features=
5346 for opt in XAW3D XPM JPEG TIFF GIF PNG RSVG CAIRO IMAGEMAGICK SOUND GPM DBUS \
5347 GCONF GSETTINGS NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT \
5348 LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS X_TOOLKIT OLDXMENU X11 NS MODULES \
5349 XWIDGETS LIBSYSTEMD CANNOT_DUMP; do
5352 CANNOT_DUMP) eval val=\${$opt} ;;
5353 NOTIFY|ACL) eval val=\${${opt}_SUMMARY} ;;
5354 TOOLKIT_SCROLL_BARS|X_TOOLKIT) eval val=\${USE_$opt} ;;
5355 *) eval val=\${HAVE_$opt} ;;
5358 xno|xnone|x) continue ;;
5363 GTK*|LUCID|MOTIF) opt=$val ;;
5368 AS_VAR_APPEND([emacs_config_features], ["$optsep$opt"])
5371 AC_DEFINE_UNQUOTED(EMACS_CONFIG_FEATURES, "${emacs_config_features}",
5372 [Summary of some of the main features enabled by configure.])
5374 AS_ECHO([" Does Emacs use -lXaw3d? ${HAVE_XAW3D}
5375 Does Emacs use -lXpm? ${HAVE_XPM}
5376 Does Emacs use -ljpeg? ${HAVE_JPEG}
5377 Does Emacs use -ltiff? ${HAVE_TIFF}
5378 Does Emacs use a gif library? ${HAVE_GIF} $LIBGIF
5379 Does Emacs use a png library? ${HAVE_PNG} $LIBPNG
5380 Does Emacs use -lrsvg-2? ${HAVE_RSVG}
5381 Does Emacs use cairo? ${HAVE_CAIRO}
5382 Does Emacs use imagemagick (version 6)? ${HAVE_IMAGEMAGICK}
5383 Does Emacs support sound? ${HAVE_SOUND}
5384 Does Emacs use -lgpm? ${HAVE_GPM}
5385 Does Emacs use -ldbus? ${HAVE_DBUS}
5386 Does Emacs use -lgconf? ${HAVE_GCONF}
5387 Does Emacs use GSettings? ${HAVE_GSETTINGS}
5388 Does Emacs use a file notification library? ${NOTIFY_SUMMARY}
5389 Does Emacs use access control lists? ${ACL_SUMMARY}
5390 Does Emacs use -lselinux? ${HAVE_LIBSELINUX}
5391 Does Emacs use -lgnutls? ${HAVE_GNUTLS}
5392 Does Emacs use -lxml2? ${HAVE_LIBXML2}
5393 Does Emacs use -lfreetype? ${HAVE_FREETYPE}
5394 Does Emacs use -lm17n-flt? ${HAVE_M17N_FLT}
5395 Does Emacs use -lotf? ${HAVE_LIBOTF}
5396 Does Emacs use -lxft? ${HAVE_XFT}
5397 Does Emacs use -lsystemd? ${HAVE_LIBSYSTEMD}
5398 Does Emacs directly use zlib? ${HAVE_ZLIB}
5399 Does Emacs have dynamic modules support? ${HAVE_MODULES}
5400 Does Emacs use toolkit scroll bars? ${USE_TOOLKIT_SCROLL_BARS}
5401 Does Emacs support Xwidgets (requires gtk3)? ${HAVE_XWIDGETS}
5402 Does Emacs have threading support in lisp? ${threads_enabled}
5405 if test -n "${EMACSDATA}"; then
5406 AS_ECHO([" Environment variable EMACSDATA set to: $EMACSDATA"])
5408 if test -n "${EMACSDOC}"; then
5409 AS_ECHO([" Environment variable EMACSDOC set to: $EMACSDOC"])
5414 if test "$HAVE_NS" = "yes"; then
5416 AS_ECHO(["You must run \"${MAKE-make} install\" in order to test the built application.
5417 The installed application will go to nextstep/Emacs.app and can be
5418 run or moved from there."])
5419 if test "$EN_NS_SELF_CONTAINED" = "yes"; then
5420 echo "The application will be fully self-contained."
5422 AS_ECHO(["The lisp resources for the application will be installed under ${prefix}.
5423 You may need to run \"${MAKE-make} install\" with sudo. The application will fail
5424 to run if these resources are not installed."])
5429 case $opsys,$emacs_uname_r in
5431 AC_MSG_WARN([[building Emacs on Cygwin 1.5 is not supported.]])
5436 # Remove any trailing slashes in these variables.
5438 */) prefix=`AS_DIRNAME(["$prefix."])`;;
5440 case $exec_prefix in
5441 */) exec_prefix=`AS_DIRNAME(["$exec_prefix."])`;;
5444 if test "$HAVE_NS" = "yes"; then
5445 if test "$NS_IMPL_GNUSTEP" = yes; then
5446 AC_CONFIG_FILES([nextstep/GNUstep/Emacs.base/Resources/Info-gnustep.plist:nextstep/templates/Info-gnustep.plist.in \
5447 nextstep/GNUstep/Emacs.base/Resources/Emacs.desktop:nextstep/templates/Emacs.desktop.in])
5448 ns_check_file=Resources/Info-gnustep.plist
5450 AC_CONFIG_FILES([nextstep/Cocoa/Emacs.base/Contents/Info.plist:nextstep/templates/Info.plist.in \
5451 nextstep/Cocoa/Emacs.base/Contents/Resources/English.lproj/InfoPlist.strings:nextstep/templates/InfoPlist.strings.in])
5452 ns_check_file=Contents/Info.plist
5454 AC_SUBST(ns_check_file)
5457 AC_CONFIG_FILES([Makefile lib/gnulib.mk])
5459 dnl config.status treats $srcdir specially, so I think this is ok...
5460 AC_CONFIG_FILES([$srcdir/doc/man/emacs.1])
5462 m4_define([subdir_makefiles],
5463 [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])
5464 SUBDIR_MAKEFILES="subdir_makefiles"
5465 AC_CONFIG_FILES(subdir_makefiles)
5467 dnl test/ is not present in release tarfiles.
5468 opt_makefile=test/Makefile
5470 if test -f "$srcdir/$opt_makefile.in"; then
5471 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
5472 dnl Again, it's best not to use a variable. Though you can add
5473 dnl ", [], [opt_makefile='$opt_makefile']" and it should work.
5474 AC_CONFIG_FILES([test/Makefile])
5478 dnl The admin/ directory used to be excluded from tarfiles.
5479 if test -d $srcdir/admin; then
5480 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES admin/charsets/Makefile admin/unidata/Makefile admin/grammars/Makefile"
5481 AC_CONFIG_FILES([admin/charsets/Makefile])
5482 AC_CONFIG_FILES([admin/unidata/Makefile])
5483 AC_CONFIG_FILES([admin/grammars/Makefile])
5487 SUBDIR_MAKEFILES_IN=`echo " ${SUBDIR_MAKEFILES}" | sed -e 's| | $(srcdir)/|g' -e 's|Makefile|Makefile.in|g'`
5489 AC_SUBST(SUBDIR_MAKEFILES_IN)
5491 dnl You might wonder (I did) why epaths.h is generated by running make,
5492 dnl rather than just letting configure generate it from epaths.in.
5493 dnl One reason is that the various paths are not fully expanded (see above);
5494 dnl e.g., gamedir='${localstatedir}/games/emacs'.
5495 dnl Secondly, the GNU Coding standards require that one should be able
5496 dnl to run 'make prefix=/some/where/else' and override the values set
5497 dnl by configure. This also explains the 'move-if-change' test and
5498 dnl the use of force in the 'epaths-force' rule in Makefile.in.
5499 AC_CONFIG_COMMANDS([src/epaths.h], [
5500 if test "${opsys}" = "mingw32"; then
5501 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force-w32
5503 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force
5504 fi || AC_MSG_ERROR(['src/epaths.h' could not be made.])
5505 ], [GCC="$GCC" CPPFLAGS="$CPPFLAGS" opsys="$opsys"])
5507 dnl NB we have to cheat and use the ac_... version because abs_top_srcdir
5508 dnl is not yet set, sigh. Or we could use ../$srcdir/src/.gdbinit,
5510 AC_CONFIG_COMMANDS([src/.gdbinit], [
5511 if test ! -f src/.gdbinit && test -f "$srcdir/src/.gdbinit"; then
5512 AS_ECHO(["source $ac_abs_top_srcdir/src/.gdbinit"]) > src/.gdbinit
5516 dnl Perhaps this would be better named doc-emacs-emacsver.texi?
5517 dnl See comments for etc-refcards-emacsver.tex.
5518 dnl Since we get a doc/emacs directory generated anyway, for the Makefile,
5519 dnl it is not quite the same. But we are generating in $srcdir.
5520 AC_CONFIG_COMMANDS([doc/emacs/emacsver.texi], [
5521 ${MAKE-make} -s --no-print-directory -C doc/emacs doc-emacsver || \
5522 AC_MSG_ERROR(['doc/emacs/emacsver.texi' could not be made.])
5525 dnl If we give this the more natural name, etc/refcards/emacsver.texi,
5526 dnl then a directory etc/refcards is created in the build directory,
5527 dnl which is probably harmless, but confusing (in out-of-tree builds).
5528 dnl (If we were to generate etc/refcards/Makefile, this might change.)
5529 dnl It is really $srcdir/etc/refcards/emacsver.tex that we generate.
5530 AC_CONFIG_COMMANDS([etc-refcards-emacsver.tex], [
5531 ${MAKE-make} -s MAKEFILE_NAME=do-not-make-Makefile etc-emacsver || \
5532 AC_MSG_ERROR(['etc/refcards/emacsver.tex' could not be made.])
5535 if test $AUTO_DEPEND = yes; then
5536 for dir in $AUTODEPEND_PARENTS; do
5537 AS_MKDIR_P([$dir/deps])
5543 if test ! "$with_mailutils"; then
5544 if test "$with_pop" = yes; then
5545 AC_MSG_WARN([This configuration installs a 'movemail' program
5546 that retrieves POP3 email via only insecure channels.
5547 To omit insecure POP3, you can use '$0 --without-pop'.])
5552 # Don't suggest GNU Mailutils, as it hasn't been ported.
5555 emacs_fix_movemail="use '$0 --with-mailutils'"
5556 case `(movemail --version) 2>/dev/null` in
5558 *) emacs_fix_movemail="install GNU Mailutils
5559 <http://mailutils.org> and $emacs_fix_movemail";;
5561 AC_MSG_NOTICE([You might want to $emacs_fix_movemail.]);;
5565 test "$MAKE" = make || AC_MSG_NOTICE([Now you can run '$MAKE'.])