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 OPTION_DEFAULT_OFF([mailutils],
238 [rely on GNU Mailutils, so that the --without-pop through --with-mailhost
239 options are irrelevant])
240 if test "$with_mailutils" = no; then
243 AC_SUBST([with_mailutils])
245 OPTION_DEFAULT_ON([pop],
246 [don't support POP mail retrieval with movemail (--without-pop or
247 --with-mailutils is recommended, as movemail POP is insecure)])
248 if test "$with_pop" = yes; then
249 AC_DEFINE(MAIL_USE_POP)
251 AH_TEMPLATE(MAIL_USE_POP, [Define to support POP mail retrieval.])dnl
253 OPTION_DEFAULT_OFF([kerberos],[support Kerberos-authenticated POP])
254 if test "$with_kerberos" != no; then
257 AH_TEMPLATE(KERBEROS,
258 [Define to support Kerberos-authenticated POP mail retrieval.])dnl
260 OPTION_DEFAULT_OFF([kerberos5],[support Kerberos version 5 authenticated POP])
261 if test "${with_kerberos5}" != no; then
262 if test "${with_kerberos}" = no; then
266 AC_DEFINE(KERBEROS5, 1, [Define to use Kerberos 5 instead of Kerberos 4.])
269 OPTION_DEFAULT_OFF([hesiod],[support Hesiod to get the POP server host])
270 dnl FIXME hesiod support may not be present, so it seems like an error
271 dnl to define, or at least use, this unconditionally.
272 if test "$with_hesiod" != no; then
273 AC_DEFINE(HESIOD, 1, [Define to support using a Hesiod database to find the POP server.])
276 OPTION_DEFAULT_OFF([mail-unlink],[unlink, rather than empty, mail spool after reading])
277 if test "$with_mail_unlink" != no; then
278 AC_DEFINE(MAIL_UNLINK_SPOOL, 1, [Define to unlink, rather than empty, mail spool after reading.])
281 AC_ARG_WITH([mailhost],[AS_HELP_STRING([--with-mailhost=HOSTNAME],
282 [string giving default POP mail host])],
283 AC_DEFINE_UNQUOTED(MAILHOST, ["$withval"], [String giving fallback POP mail host.]))
285 AC_ARG_WITH([sound],[AS_HELP_STRING([--with-sound=VALUE],
286 [compile with sound support (VALUE one of: yes, alsa, oss, bsd-ossaudio, no;
287 default yes). Only for GNU/Linux, FreeBSD, NetBSD, MinGW, Cygwin.])],
288 [ case "${withval}" in
289 yes|no|alsa|oss|bsd-ossaudio) val=$withval ;;
290 *) AC_MSG_ERROR(['--with-sound=$withval' is invalid;
291 this option's value should be 'yes', 'no', 'alsa', 'oss', or 'bsd-ossaudio'.])
296 [with_sound=$with_features])
298 dnl FIXME currently it is not the last.
299 dnl This should be the last --with option, because --with-x is
300 dnl added later on when we find the file name of X, and it's best to
301 dnl keep them together visually.
302 AC_ARG_WITH([x-toolkit],[AS_HELP_STRING([--with-x-toolkit=KIT],
303 [use an X toolkit (KIT one of: yes or gtk, gtk2, gtk3, lucid or athena, motif, no)])],
304 [ case "${withval}" in
305 y | ye | yes ) val=gtk ;;
307 l | lu | luc | luci | lucid ) val=lucid ;;
308 a | at | ath | athe | athen | athena ) val=athena ;;
309 m | mo | mot | moti | motif ) val=motif ;;
310 g | gt | gtk ) val=gtk ;;
314 AC_MSG_ERROR(['--with-x-toolkit=$withval' is invalid;
315 this option's value should be 'yes', 'no', 'lucid', 'athena', 'motif', 'gtk',
316 'gtk2' or 'gtk3'. 'yes' and 'gtk' are synonyms.
317 'athena' and 'lucid' are synonyms.])
323 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])
324 if test "$with_wide_int" = yes; then
325 AC_DEFINE([WIDE_EMACS_INT], 1, [Use long long for EMACS_INT if available.])
328 dnl _ON results in a '--without' option in the --help output, so
329 dnl the help text should refer to "don't compile", etc.
330 with_xpm_set=${with_xpm+set}
331 OPTION_DEFAULT_ON([xpm],[don't compile with XPM image support])
332 OPTION_DEFAULT_ON([jpeg],[don't compile with JPEG image support])
333 OPTION_DEFAULT_ON([tiff],[don't compile with TIFF image support])
334 OPTION_DEFAULT_ON([gif],[don't compile with GIF image support])
335 OPTION_DEFAULT_ON([png],[don't compile with PNG image support])
336 OPTION_DEFAULT_ON([rsvg],[don't compile with SVG image support])
337 OPTION_DEFAULT_ON([libsystemd],[don't compile with libsystemd support])
338 OPTION_DEFAULT_OFF([cairo],[compile with Cairo drawing (experimental)])
339 OPTION_DEFAULT_ON([xml2],[don't compile with XML parsing support])
340 OPTION_DEFAULT_ON([imagemagick],[don't compile with ImageMagick image support])
342 OPTION_DEFAULT_ON([xft],[don't use XFT for anti aliased fonts])
343 OPTION_DEFAULT_ON([libotf],[don't use libotf for OpenType font support])
344 OPTION_DEFAULT_ON([m17n-flt],[don't use m17n-flt for text shaping])
346 OPTION_DEFAULT_ON([toolkit-scroll-bars],[don't use Motif or Xaw3d scroll bars])
347 OPTION_DEFAULT_ON([xaw3d],[don't use Xaw3d])
348 OPTION_DEFAULT_ON([xim],[don't use X11 XIM])
349 AC_ARG_WITH([ns],[AS_HELP_STRING([--with-ns],
350 [use Nextstep (macOS Cocoa or GNUstep) windowing system.
351 On by default on macOS.])],[],[with_ns=maybe])
352 OPTION_DEFAULT_OFF([w32], [use native MS Windows GUI in a Cygwin build])
354 OPTION_DEFAULT_ON([gpm],[don't use -lgpm for mouse support on a GNU/Linux console])
355 OPTION_DEFAULT_ON([dbus],[don't compile with D-Bus support])
356 AC_ARG_WITH([gconf],[AS_HELP_STRING([--with-gconf],
357 [compile with Gconf support (Gsettings replaces this)])],[],[with_gconf=maybe])
358 OPTION_DEFAULT_ON([gsettings],[don't compile with GSettings support])
359 OPTION_DEFAULT_ON([selinux],[don't compile with SELinux support])
360 OPTION_DEFAULT_ON([gnutls],[don't use -lgnutls for SSL/TLS support])
361 OPTION_DEFAULT_ON([zlib],[don't compile with zlib decompression support])
362 OPTION_DEFAULT_OFF([modules],[compile with dynamic modules support])
363 OPTION_DEFAULT_ON([threads],[don't compile with elisp threading support])
365 AC_ARG_WITH([file-notification],[AS_HELP_STRING([--with-file-notification=LIB],
366 [use a file notification library (LIB one of: yes, inotify, kqueue, gfile, w32, no)])],
367 [ case "${withval}" in
368 y | ye | yes ) val=yes ;;
370 i | in | ino | inot | inoti | inotif | inotify ) val=inotify ;;
371 k | kq | kqu | kque | kqueu | kqueue ) val=kqueue ;;
372 g | gf | gfi | gfil | gfile ) val=gfile ;;
373 w | w3 | w32 ) val=w32 ;;
374 * ) AC_MSG_ERROR(['--with-file-notification=$withval' is invalid;
375 this option's value should be 'yes', 'no', 'inotify', 'kqueue', 'gfile' or 'w32'.
376 'yes' is a synonym for 'w32' on MS-Windows, for 'no' on Nextstep,
377 otherwise for the first of 'inotify', 'kqueue' or 'gfile' that is usable.])
380 with_file_notification=$val
382 [with_file_notification=$with_features])
384 OPTION_DEFAULT_OFF([xwidgets],
385 [enable use of some gtk widgets in Emacs buffers (requires gtk3)])
387 ## For the times when you want to build Emacs but don't have
388 ## a suitable makeinfo, and can live without the manuals.
389 dnl http://lists.gnu.org/archive/html/emacs-devel/2008-04/msg01844.html
390 OPTION_DEFAULT_ON([makeinfo],[don't require makeinfo for building manuals])
392 ## Makefile.in needs the cache file name.
395 ## This is an option because I do not know if all info/man support
396 ## compressed files, nor how to test if they do so.
397 OPTION_DEFAULT_ON([compress-install],
398 [don't compress some files (.el, .info, etc.) when installing. Equivalent to:
399 make GZIP_PROG= install])
401 AC_ARG_WITH(gameuser,dnl
402 [AS_HELP_STRING([--with-gameuser=USER_OR_GROUP],
403 [user for shared game score files.
404 An argument prefixed by ':' specifies a group instead.])])
407 case ${with_gameuser} in
409 yes) gamegroup=games ;;
410 :*) gamegroup=${with_gameuser#:} ;;
411 *) gameuser=${with_gameuser} ;;
414 AC_ARG_WITH([gnustep-conf],dnl
415 [AS_HELP_STRING([--with-gnustep-conf=FILENAME],
416 [name of GNUstep configuration file to use on systems where the command
417 'gnustep-config' does not work; default $GNUSTEP_CONFIG_FILE, or
418 /etc/GNUstep/GNUstep.conf])])
419 test "X${with_gnustep_conf}" != X && test "${with_gnustep_conf}" != yes && \
420 GNUSTEP_CONFIG_FILE="${with_gnustep_conf}"
421 test "X$GNUSTEP_CONFIG_FILE" = "X" && \
422 GNUSTEP_CONFIG_FILE=/etc/GNUstep/GNUstep.conf
424 AC_ARG_ENABLE(ns-self-contained,
425 [AS_HELP_STRING([--disable-ns-self-contained],
426 [disable self contained build under NeXTstep])],
427 EN_NS_SELF_CONTAINED=$enableval,
428 EN_NS_SELF_CONTAINED=yes)
431 AC_ARG_ENABLE(locallisppath,
432 [AS_HELP_STRING([--enable-locallisppath=PATH],
433 [directories Emacs should search for lisp files specific
435 if test "${enableval}" = "no"; then
437 elif test "${enableval}" != "yes"; then
438 locallisppath=${enableval} locallisppathset=yes
441 AC_ARG_ENABLE(checking,
442 [AS_HELP_STRING([--enable-checking@<:@=LIST@:>@],
443 [enable expensive run-time checks. With LIST,
444 enable only specific categories of checks.
445 Categories are: all,yes,no.
446 Flags are: stringbytes, stringoverrun, stringfreelist,
447 xmallocoverrun, conslist, glyphs])],
448 [ac_checking_flags="${enableval}"],[])
449 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
450 for check in $ac_checking_flags
453 # these set all the flags to specific states
454 yes) ac_enable_checking=1 ;;
455 no) ac_enable_checking= ;
456 ac_gc_check_stringbytes= ;
457 ac_gc_check_string_overrun= ;
458 ac_gc_check_string_free_list= ;
459 ac_xmalloc_overrun= ;
460 ac_gc_check_cons_list= ;
462 all) ac_enable_checking=1 ;
463 ac_gc_check_stringbytes=1 ;
464 ac_gc_check_string_overrun=1 ;
465 ac_gc_check_string_free_list=1 ;
466 ac_xmalloc_overrun=1 ;
467 ac_gc_check_cons_list=1 ;
469 # these enable particular checks
470 stringbytes) ac_gc_check_stringbytes=1 ;;
471 stringoverrun) ac_gc_check_string_overrun=1 ;;
472 stringfreelist) ac_gc_check_string_free_list=1 ;;
473 xmallocoverrun) ac_xmalloc_overrun=1 ;;
474 conslist) ac_gc_check_cons_list=1 ;;
475 glyphs) ac_glyphs_debug=1 ;;
476 *) AC_MSG_ERROR(unknown check category $check) ;;
481 if test x$ac_enable_checking != x ; then
482 AC_DEFINE(ENABLE_CHECKING, 1,
483 [Define to 1 if expensive run-time data type and consistency checks are enabled.])
485 if test x$ac_gc_check_stringbytes != x ; then
486 AC_DEFINE(GC_CHECK_STRING_BYTES, 1,
487 [Define this temporarily to hunt a bug. If defined, the size of
488 strings is redundantly recorded in sdata structures so that it can
489 be compared to the sizes recorded in Lisp strings.])
491 if test x$ac_gc_check_string_overrun != x ; then
492 AC_DEFINE(GC_CHECK_STRING_OVERRUN, 1,
493 [Define this to check for short string overrun.])
495 if test x$ac_gc_check_string_free_list != x ; then
496 AC_DEFINE(GC_CHECK_STRING_FREE_LIST, 1,
497 [Define this to check the string free list.])
499 if test x$ac_xmalloc_overrun != x ; then
500 AC_DEFINE(XMALLOC_OVERRUN_CHECK, 1,
501 [Define this to check for malloc buffer overrun.])
503 if test x$ac_gc_check_cons_list != x ; then
504 AC_DEFINE(GC_CHECK_CONS_LIST, 1,
505 [Define this to check for errors in cons list.])
507 if test x$ac_glyphs_debug != x ; then
508 AC_DEFINE(GLYPH_DEBUG, 1,
509 [Define this to enable glyphs debugging code.])
512 dnl The name of this option is unfortunate. It predates, and has no
513 dnl relation to, the "sampling-based elisp profiler" added in 24.3.
514 dnl Actually, it stops it working.
515 dnl http://lists.gnu.org/archive/html/emacs-devel/2012-11/msg00393.html
516 AC_ARG_ENABLE(profiling,
517 [AS_HELP_STRING([--enable-profiling],
518 [build emacs with low-level, gprof profiling support.
519 Mainly useful for debugging Emacs itself. May not work on
520 all platforms. Stops profiler.el working.])],
521 [ac_enable_profiling="${enableval}"],[])
522 if test x$ac_enable_profiling != x ; then
523 PROFILING_CFLAGS="-DPROFILING=1 -pg"
527 AC_SUBST(PROFILING_CFLAGS)
529 AC_ARG_ENABLE(autodepend,
530 [AS_HELP_STRING([--enable-autodepend],
531 [automatically generate dependencies to .h-files.
532 Requires gcc, enabled if found.])],
533 [ac_enable_autodepend="${enableval}"],[ac_enable_autodepend=yes])
535 AC_ARG_ENABLE(gtk-deprecation-warnings,
536 [AS_HELP_STRING([--enable-gtk-deprecation-warnings],
537 [Show Gtk+/Gdk deprecation warnings for Gtk+ >= 3.0])],
538 [ac_enable_gtk_deprecation_warnings="${enableval}"],[])
541 AC_ARG_ENABLE([build-details],
542 [AS_HELP_STRING([--disable-build-details],
543 [Make the build more deterministic by omitting host
544 names, time stamps, etc. from the output.])],
545 [test "$enableval" = no && BUILD_DETAILS=--no-build-details])
546 AC_SUBST([BUILD_DETAILS])
548 dnl This used to use changequote, but, apart from 'changequote is evil'
549 dnl per the autoconf manual, we can speed up autoconf somewhat by quoting
550 dnl the great gob of text. Thus it's not processed for possible expansion.
551 dnl Just make sure the brackets remain balanced.
553 dnl Since Emacs can't find matching pairs of quotes, boundaries are
554 dnl indicated by comments.
558 ### If you add support for a new configuration, add code to this
559 ### switch statement to recognize your configuration name and select
560 ### the appropriate opsys.
562 ### As far as handling version numbers on operating systems is
563 ### concerned, make sure things will fail in a fixable way. If
564 ### /etc/MACHINES doesn't say anything about version numbers, be
565 ### prepared to handle anything reasonably. If version numbers
566 ### matter, be sure /etc/MACHINES says something about it.
569 case "${canonical}" in
571 ## GNU/Linux and similar ports
586 ## FreeBSD kernel + glibc based userland
597 *-*-openbsd* | *-*-mirbsd* )
601 ## Apple Darwin / macOS
603 case "${canonical}" in
604 *-apple-darwin[0-9].*) unported=yes ;;
605 i[3456]86-* | x86_64-* ) ;;
609 ## FIXME: Find a way to use Fink if available (Bug#11507).
612 ## Chromium Native Client
622 ## HP 9000 series 700 and 800, running HP/UX
626 hppa*-hp-hpux1[1-9]* )
628 CFLAGS="-D_INCLUDE__STDC_A1_SOURCE $CFLAGS"
632 rs6000-ibm-aix4.[23]* )
635 powerpc-ibm-aix4.[23]* )
638 rs6000-ibm-aix[56]* )
641 powerpc-ibm-aix[5-9]* | powerpc-ibm-aix[1-9][0-9]* )
647 | i[3456]86-*-solaris2* | i[3456]86-*-sunos5* \
648 | x86_64-*-solaris2* | x86_64-*-sunos5*)
649 case "${canonical}" in
651 amd64-*-*|x86_64-*-*) ;;
655 case "${canonical}" in
656 *-sunos5.[1-9][0-9]* | *-solaris2.[1-9][0-9]* )
658 emacs_check_sunpro_c=yes
660 *-sunos5.[1-5]* | *-solaris2.[1-5]* ) unported=yes ;;
661 ## Note that Emacs 23.1's NEWS said the following would be dropped.
662 *-sunos5.6* | *-solaris2.6* )
666 ## 5.7 EOL Aug 2008, 5.8 EOL Mar 2012.
667 *-sunos5.[7-9]* | *-solaris2.[7-9]* )
669 emacs_check_sunpro_c=yes
672 ## Watch out for a compiler that we know will not work.
673 case "${canonical}" in
674 *-solaris* | *-sunos5* )
675 if [ "x$CC" = x/usr/ucb/cc ]; then
676 ## /usr/ucb/cc doesn't work;
677 ## we should find some other compiler that does work.
685 ## Intel 386 machines where we don't care about the manufacturer.
687 case "${canonical}" in
688 *-darwin* ) opsys=darwin ;;
691 # MinGW overrides and adds some system headers in nt/inc.
692 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
694 *-sysv4.2uw* ) opsys=unixware ;;
695 *-sysv5uw* ) opsys=unixware ;;
696 *-sysv5OpenUNIX* ) opsys=unixware ;;
697 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
703 case "${canonical}" in
706 # MinGW overrides and adds some system headers in nt/inc.
707 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
709 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
718 ### If the code above didn't choose an operating system, just choose
719 ### an operating system based on the configuration name. You really
720 ### only want to use this when you have no idea what the right
721 ### operating system is; if you know what operating systems a machine
722 ### runs, it's cleaner to make it explicit in the case statement
724 if test x"${opsys}" = x; then
725 case "${canonical}" in
726 *-gnu* ) opsys=gnu ;;
736 if test $unported = yes; then
737 AC_MSG_ERROR([Emacs does not support '${canonical}' systems.
738 If you think it should, please send a report to ${PACKAGE_BUGREPORT}.
739 Check 'etc/MACHINES' for recognized configuration names.])
742 #### Choose a compiler.
744 dnl Don't bother to test for C89.
745 AC_DEFUN([_AC_PROG_CC_C89], [$2])
747 dnl Sets GCC=yes if using gcc.
748 AC_PROG_CC([gcc cc cl clang "$XCRUN gcc" "$XCRUN clang"])
749 if test -n "$XCRUN"; then
750 AC_CHECK_PROGS(AR, [ar "$XCRUN ar"])
751 test -n "$AR" && export AR
754 dnl Emacs needs C99 or later.
759 if test x$GCC = xyes; then
760 test "x$GCC_TEST_OPTIONS" != x && CC="$CC $GCC_TEST_OPTIONS"
763 # Avoid gnulib's tests for -lcrypto, so that there's no static dependency on it.
764 AC_DEFUN([gl_CRYPTO_CHECK])
765 # Avoid gnulib's tests for HAVE_WORKING_O_NOATIME and HAVE_WORKING_O_NOFOLLOW,
766 # as we don't use them.
767 AC_DEFUN([gl_FCNTL_O_FLAGS])
768 # Avoid gnulib's test for pthread_sigmask.
770 for func in $ac_func_list; do
771 test $func = pthread_sigmask || AS_VAR_APPEND([funcs], [" $func"])
774 # Use the system putenv even if it lacks GNU features, as we don't need them,
775 # and the gnulib replacement runs afoul of a FreeBSD 10.1 bug; see Bug#19874.
776 AC_CHECK_FUNCS_ONCE([putenv])
777 AC_DEFUN([gl_FUNC_PUTENV],
778 [test "$ac_cv_func_putenv" = yes || REPLACE_PUTENV=1])
779 # Emacs does not use the wchar or wctype-h modules.
780 AC_DEFUN([gt_TYPE_WINT_T],
781 [GNULIB_OVERRIDES_WINT_T=0
782 AC_SUBST([GNULIB_OVERRIDES_WINT_T])])
784 # Initialize gnulib right after choosing the compiler.
785 dnl Amongst other things, this sets AR and ARFLAGS.
788 if test "$ac_test_CFLAGS" != set; then
789 # It's helpful to have C macros available to GDB, so prefer -g3 to -g
790 # if -g3 works and the user does not specify CFLAGS.
791 # This test must follow gl_EARLY; otherwise AC_LINK_IFELSE complains.
794 emacs_g3_CFLAGS='-g3';;
796 emacs_g3_CFLAGS='-g3 -O2';;
800 if test -n "$emacs_g3_CFLAGS"; then
801 emacs_save_CFLAGS=$CFLAGS
802 CFLAGS=$emacs_g3_CFLAGS
803 AC_CACHE_CHECK([whether $CC accepts $emacs_g3_CFLAGS],
804 [emacs_cv_prog_cc_g3],
805 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
806 [emacs_cv_prog_cc_g3=yes],
807 [emacs_cv_prog_cc_g3=no])])
808 if test $emacs_cv_prog_cc_g3 != yes; then
809 CFLAGS=$emacs_save_CFLAGS
811 if test $opsys = mingw32; then
812 CFLAGS="$CFLAGS -gdwarf-2"
819 # No optimization flag was inferred for this non-GCC compiler.
820 # Try -O. This is needed for xlc on AIX; see Bug#14258.
821 emacs_save_CFLAGS=$CFLAGS
822 test -z "$CFLAGS" || CFLAGS="$CFLAGS "
824 AC_CACHE_CHECK([whether $CC accepts -O],
825 [emacs_cv_prog_cc_o],
826 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
827 [emacs_cv_prog_cc_o=yes],
828 [emacs_cv_prog_cc_o=no])])
829 if test $emacs_cv_prog_cc_o != yes; then
830 CFLAGS=$emacs_save_CFLAGS
835 # gl_GCC_VERSION_IFELSE([major], [minor], [run-if-found], [run-if-not-found])
836 # ---------------------------------------------------------------------------
837 # If $CPP is gcc-MAJOR.MINOR or newer, then run RUN-IF-FOUND.
838 # Otherwise, run RUN-IF-NOT-FOUND.
839 AC_DEFUN([gl_GCC_VERSION_IFELSE],
843 #if ($1) < __GNUC__ || (($1) == __GNUC__ && ($2) <= __GNUC_MINOR__)
846 # error "your version of gcc is older than $1.$2"
853 AC_ARG_ENABLE([gcc-warnings],
854 [AS_HELP_STRING([--enable-gcc-warnings@<:@=TYPE@:>@],
855 [control generation of GCC warnings. The TYPE 'yes'
856 means to fail if any warnings are issued; 'warn-only'
857 means issue warnings without failing (default for
858 developer builds); 'no' means disable warnings
859 (default for non-developer builds).])],
862 *) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
864 gl_gcc_warnings=$enableval],
865 [# By default, use 'warn-only' if it looks like the invoker of 'configure'
866 # is a developer as opposed to a builder. This is most likely true
867 # if GCC is recent enough and there is a .git directory or file;
868 # however, if there is also a .tarball-version file it is probably
869 # just a release imported into Git for patch management.
871 if test -e "$srcdir"/.git && test ! -f "$srcdir"/.tarball-version; then
872 gl_GCC_VERSION_IFELSE([5], [3], [gl_gcc_warnings=warn-only])
875 AC_ARG_ENABLE([check-lisp-object-type],
876 [AS_HELP_STRING([--enable-check-lisp-object-type],
877 [Enable compile-time checks for the Lisp_Object data type,
878 which can catch some bugs during development.
879 The default is "no" if --enable-gcc-warnings is "no".])])
880 if test "${enable_check_lisp_object_type-$gl_gcc_warnings}" != "no"; then
881 AC_DEFINE([CHECK_LISP_OBJECT_TYPE], 1,
882 [Define to enable compile-time checks for the Lisp_Object data type.])
885 # clang is unduly picky about some things.
886 AC_CACHE_CHECK([whether the compiler is clang], [emacs_cv_clang],
893 [emacs_cv_clang=yes],
894 [emacs_cv_clang=no])])
897 # When compiling with GCC, prefer -isystem to -I when including system
898 # include files, to avoid generating useless diagnostics for the files.
899 AS_IF([test $gl_gcc_warnings = no],
902 AS_IF([test "$emacs_cv_clang" = yes],
904 # Turn off some warnings if supported.
905 gl_WARN_ADD([-Wno-switch])
906 gl_WARN_ADD([-Wno-pointer-sign])
907 gl_WARN_ADD([-Wno-string-plus-int])
908 gl_WARN_ADD([-Wno-unknown-attributes])
913 # This, $nw, is the list of warnings we disable.
916 case $with_x_toolkit in
917 lucid | athena | motif)
918 # Old toolkits mishandle 'const'.
919 nw="$nw -Wwrite-strings"
922 AS_IF([test $gl_gcc_warnings = yes],
923 [WERROR_CFLAGS=-Werror])
925 nw="$nw -Wduplicated-branches" # Too many false alarms
926 nw="$nw -Wformat-overflow=2" # False alarms due to GCC bug 80776
927 nw="$nw -Wsystem-headers" # Don't let system headers trigger warnings
928 nw="$nw -Woverlength-strings" # Not a problem these days
929 nw="$nw -Wformat-nonliteral" # we do this a lot
930 nw="$nw -Wvla" # Emacs uses <vla.h>.
931 nw="$nw -Wswitch-default" # Too many warnings for now
932 nw="$nw -Wunused-const-variable=2" # lisp.h declares const objects.
933 nw="$nw -Winline" # OK to ignore 'inline'
934 nw="$nw -Wstrict-overflow" # OK to optimize assuming that
935 # signed overflow has undefined behavior
936 nw="$nw -Wsync-nand" # irrelevant here, and provokes ObjC warning
937 nw="$nw -Wunsafe-loop-optimizations" # OK to suppress unsafe optimizations
938 nw="$nw -Wbad-function-cast" # These casts are no worse than others.
940 # Emacs doesn't care about shadowing; see
941 # <http://lists.gnu.org/archive/html/emacs-diffs/2011-11/msg00265.html>.
944 # Emacs's use of alloca inhibits protecting the stack.
945 nw="$nw -Wstack-protector"
947 # Emacs's use of partly-const functions such as Fgnutls_available_p
948 # make this option problematic.
949 nw="$nw -Wsuggest-attribute=const"
951 # Emacs's use of partly-pure functions such as CHECK_TYPE make this
952 # option problematic.
953 nw="$nw -Wsuggest-attribute=pure"
955 # This part is merely for shortening the command line,
956 # since -Wall implies -Wswitch.
959 # This part is merely for shortening the command line,
960 # since -Wno-FOO needs to be added below regardless.
961 nw="$nw -Wmissing-field-initializers"
962 nw="$nw -Woverride-init"
963 nw="$nw -Wtype-limits"
964 nw="$nw -Wunused-parameter"
966 if test "$emacs_cv_clang" = yes; then
967 nw="$nw -Wcast-align"
968 nw="$nw -Wdouble-promotion"
969 nw="$nw -Wmissing-braces"
972 # This causes too much noise in the MinGW build
973 if test $opsys = mingw32; then
974 nw="$nw -Wpointer-sign"
977 gl_MANYWARN_ALL_GCC([ws])
978 gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
982 gl_WARN_ADD([-Wredundant-decls]) # Prefer this, as we don't use Bison.
983 gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
984 gl_WARN_ADD([-Wno-override-init]) # More trouble than it is worth
985 gl_WARN_ADD([-Wno-sign-compare]) # Too many warnings for now
986 gl_WARN_ADD([-Wno-type-limits]) # Too many warnings for now
987 gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
988 gl_WARN_ADD([-Wno-format-nonliteral])
990 # clang is unduly picky about braces.
991 if test "$emacs_cv_clang" = yes; then
992 gl_WARN_ADD([-Wno-missing-braces])
995 # This causes too much noise in the MinGW build
996 if test $opsys = mingw32; then
997 gl_WARN_ADD([-Wno-pointer-sign])
1000 AC_DEFINE([GCC_LINT], [1], [Define to 1 if --enable-gcc-warnings.])
1001 AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
1002 AH_VERBATIM([GNULIB_PORTCHECK_FORTIFY_SOURCE],
1003 [/* Enable compile-time and run-time bounds-checking, and some warnings,
1004 without upsetting glibc 2.15+. */
1005 #if (defined GNULIB_PORTCHECK && !defined _FORTIFY_SOURCE \
1006 && defined __OPTIMIZE__ && __OPTIMIZE__)
1007 # define _FORTIFY_SOURCE 2
1012 # clang is picky about these regardless of whether
1013 # --enable-gcc-warnings is specified.
1014 if test "$emacs_cv_clang" = yes; then
1015 gl_WARN_ADD([-Wno-initializer-overrides])
1016 gl_WARN_ADD([-Wno-tautological-compare])
1017 gl_WARN_ADD([-Wno-tautological-constant-out-of-range-compare])
1020 # Use a slightly smaller set of warning options for lib/.
1022 nw="$nw -Wunused-macros"
1023 gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
1025 AC_SUBST([WERROR_CFLAGS])
1026 AC_SUBST([GNULIB_WARN_CFLAGS])
1035 AC_ARG_ENABLE(link-time-optimization,
1036 [AS_HELP_STRING([--enable-link-time-optimization],
1037 [build emacs with link-time optimization.
1038 This requires GCC 4.5.0 or later, or clang.
1039 (Note that clang support is experimental - see INSTALL.)
1040 It also makes Emacs harder to debug, and when we tried it
1041 with GCC 4.9.0 x86-64 it made Emacs slower, so it's not
1042 recommended for typical use.])],
1043 if test "${enableval}" != "no"; then
1045 if test "$emacs_cv_clang" = yes; then
1046 AC_MSG_CHECKING([whether link-time optimization is supported by clang])
1047 GOLD_PLUGIN=`$CC -print-file-name=LLVMgold.so 2>/dev/null`
1048 if test -x "$GOLD_PLUGIN"; then
1051 elif test x$GCC = xyes; then
1052 AC_MSG_CHECKING([whether link-time optimization is supported by gcc])
1053 CPUS=`getconf _NPROCESSORS_ONLN 2>/dev/null`
1054 if test x$CPUS != x; then
1060 AC_MSG_ERROR([Link-time optimization is not supported with your compiler.])
1062 if test -z "$LTO"; then
1066 CFLAGS="$CFLAGS $LTO"
1067 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1068 [ac_lto_supported=yes], [ac_lto_supported=no])
1069 CFLAGS="$old_CFLAGS"
1071 AC_MSG_RESULT([$ac_lto_supported])
1072 if test "$ac_lto_supported" = "yes"; then
1073 CFLAGS="$CFLAGS $LTO"
1074 if test "$emacs_cv_clang" = yes; then
1075 AC_MSG_WARN([Please read INSTALL before using link-time optimization with clang])
1076 # WARNING: 'ar --plugin ...' doesn't work without
1077 # command, so plugin name is appended to ARFLAGS.
1078 ARFLAGS="cru --plugin $GOLD_PLUGIN"
1079 RANLIB="$RANLIB --plugin $GOLD_PLUGIN"
1081 dnl The following is needed for GCC 4.9.0. The GCC 4.9.0 release notes
1082 dnl suggest that instead of -ffat-lto-objects we should use gcc-ar and
1083 dnl gcc-ranlib in place of ar and ranlib, but gcc-ar makes /usr/bin/ar
1084 dnl dump core on Fedora 20, so play it safe for now.
1085 gl_COMPILER_OPTION_IF([-ffat-lto-objects],
1086 [CFLAGS="$CFLAGS -ffat-lto-objects"])
1092 dnl Automake replacements.
1093 AC_DEFUN([AM_CONDITIONAL],
1097 dnl Prefer silent make output. For verbose output, use
1098 dnl 'configure --disable-silent-rules' or 'make V=1' .
1099 dnl This code is adapted from Automake.
1100 dnl Although it can be simplified now that GNU Make is assumed,
1101 dnl the simplification hasn't been done yet.
1102 AC_ARG_ENABLE([silent-rules],
1104 [--disable-silent-rules],
1105 [verbose build output (undo: "make V=0")])])
1106 if test "$enable_silent_rules" = no; then
1107 AM_DEFAULT_VERBOSITY=1
1109 AM_DEFAULT_VERBOSITY=0
1112 AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
1114 AC_SUBST([AM_DEFAULT_V])
1115 AC_SUBST([AM_DEFAULT_VERBOSITY])
1117 dnl Some other nice autoconf tests.
1119 dnl These are commented out, since gl_EARLY and/or Autoconf already does them.
1121 dnl if test "x$RANLIB" = x; then
1126 dnl Sadly, AC_PROG_LN_S is too restrictive. It also tests whether links
1127 dnl can be made to directories. This is not relevant for our usage, and
1128 dnl excludes some cases that work fine for us. Eg MS Windows or files
1129 dnl hosted on AFS, both examples where simple links work, but links to
1130 dnl directories fail. We use a cut-down version instead.
1133 AC_MSG_CHECKING([whether ln -s works for files in the same directory])
1134 rm -f conf$$ conf$$.file
1136 LN_S_FILEONLY='cp -p'
1138 dnl On MinGW, ensure we will call the MSYS /bin/ln.exe, not some
1139 dnl random program in the current directory.
1140 if (echo >conf$$.file) 2>/dev/null; then
1141 if ln -s conf$$.file conf$$ 2>/dev/null; then
1142 if test "$opsys" = "mingw32"; then
1143 LN_S_FILEONLY='/bin/ln -s'
1145 LN_S_FILEONLY='ln -s'
1147 elif ln conf$$.file conf$$ 2>/dev/null; then
1148 if test "$opsys" = "mingw32"; then
1149 LN_S_FILEONLY=/bin/ln
1156 rm -f conf$$ conf$$.file
1158 if test "$LN_S_FILEONLY" = "ln -s"; then
1159 AC_MSG_RESULT([yes])
1161 AC_MSG_RESULT([no, using $LN_S_FILEONLY])
1164 AC_SUBST(LN_S_FILEONLY)
1167 dnl AC_PROG_LN_S sets LN_S to 'cp -pR' for MinGW, on the premise that 'ln'
1168 dnl doesn't support links to directories, as in "ln file dir". But that
1169 dnl use is non-portable, and OTOH MinGW wants to use hard links for Emacs
1170 dnl executables at "make install" time.
1171 dnl See http://lists.gnu.org/archive/html/emacs-devel/2013-04/msg00475.html
1172 dnl for more details.
1173 if test "$opsys" = "mingw32"; then
1177 dnl On some Debian versions, "install-info" prints irritating messages
1178 dnl "This is not dpkg install-info anymore, but GNU install-info"
1179 dnl if called via an absolute file name.
1180 dnl Use the entirely-identical-but-quieter ginstall-info instead if present.
1181 dnl Sadly some people may have an old ginstall-info installed on
1182 dnl non-Debian systems, so we can't use this.
1183 dnl AC_PATH_PROGS(INSTALL_INFO, [ginstall-info install-info], :,
1184 dnl $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1186 AC_PATH_PROG(INSTALL_INFO, install-info, :,
1187 $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1188 dnl Don't use GZIP, which is used by gzip for additional parameters.
1189 AC_PATH_PROG(GZIP_PROG, gzip)
1191 test $with_compress_install != yes && test -n "$GZIP_PROG" && \
1192 GZIP_PROG=" # $GZIP_PROG # (disabled by configure --without-compress-install)"
1194 AC_CACHE_CHECK([for 'find' args to delete a file],
1195 [emacs_cv_find_delete],
1196 [if touch conftest.tmp && find conftest.tmp -delete 2>/dev/null &&
1197 test ! -f conftest.tmp
1198 then emacs_cv_find_delete="-delete"
1199 else emacs_cv_find_delete="-exec rm -f {} ';'"
1201 FIND_DELETE=$emacs_cv_find_delete
1202 AC_SUBST([FIND_DELETE])
1206 if test $opsys = gnu-linux; then
1207 if test "${SETFATTR+set}" != set; then
1208 AC_CACHE_CHECK([for setfattr],
1209 [emacs_cv_prog_setfattr],
1211 if (setfattr -n user.pax.flags conftest.tmp) >/dev/null 2>&1; then
1212 emacs_cv_prog_setfattr=yes
1214 emacs_cv_prog_setfattr=no
1216 if test "$emacs_cv_prog_setfattr" = yes; then
1217 PAXCTL_notdumped='$(SETFATTR) -n user.pax.flags -v er'
1223 AC_SUBST([SETFATTR])
1226 case $opsys,$PAXCTL_notdumped,$emacs_uname_r in
1227 gnu-linux,,* | netbsd,,[0-7].*)
1228 AC_PATH_PROG([PAXCTL], [paxctl], [],
1229 [$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR/usr/sbin])
1230 if test -n "$PAXCTL"; then
1231 if test "$opsys" = netbsd; then
1232 PAXCTL_dumped='$(PAXCTL) +a'
1233 PAXCTL_notdumped=$PAXCTL_dumped
1235 AC_MSG_CHECKING([whether binaries have a PT_PAX_FLAGS header])
1236 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1237 [if $PAXCTL -v conftest$EXEEXT >/dev/null 2>&1; then
1238 AC_MSG_RESULT([yes])
1243 if test -n "$PAXCTL"; then
1244 PAXCTL_dumped='$(PAXCTL) -zex'
1245 PAXCTL_notdumped='$(PAXCTL) -r'
1250 AC_SUBST([PAXCTL_dumped])
1251 AC_SUBST([PAXCTL_notdumped])
1253 ## Require makeinfo >= 4.13 (last of the 4.x series) to build the manuals.
1254 if test "${MAKEINFO:=makeinfo}" != "no"; then
1255 case `($MAKEINFO --version) 2>/dev/null` in
1256 *' (GNU texinfo) '4.1[[3-9]]* | \
1257 *' (GNU texinfo) '[[5-9]]* | \
1258 *' (GNU texinfo) '[[1-9][0-9]]* ) ;;
1263 ## Makeinfo is unusual. For a released Emacs, the manuals are
1264 ## pre-built, and not deleted by the normal clean rules. makeinfo is
1265 ## therefore in the category of "special tools" not normally required, which
1266 ## configure does not have to check for (eg autoconf itself).
1267 ## In a repository checkout on the other hand, the manuals are not included.
1268 ## So makeinfo is a requirement to build from the repository, and configure
1269 ## should test for it as it does for any other build requirement.
1270 ## We use the presence of $srcdir/info/emacs to distinguish a release,
1271 ## with pre-built manuals, from a repository checkout.
1274 if test "$MAKEINFO" = "no"; then
1276 if test "x${with_makeinfo}" = "xno"; then
1278 elif test ! -e "$srcdir/info/emacs" && test ! -e "$srcdir/info/emacs.info"; then
1279 AC_MSG_ERROR( [You do not seem to have makeinfo >= 4.13, and your
1280 source tree does not seem to have pre-built manuals in the 'info' directory.
1281 Either install a suitable version of makeinfo, or re-run configure
1282 with the '--without-makeinfo' option to build without the manuals.] )
1285 AC_SUBST([MAKEINFO])
1286 AC_SUBST(HAVE_MAKEINFO)
1288 if test $opsys = mingw32; then
1289 DOCMISC_W32=efaq-w32
1293 AC_SUBST(DOCMISC_W32)
1295 dnl Add our options to ac_link now, after it is set up.
1297 if test x$GCC = xyes; then
1298 test "x$GCC_LINK_TEST_OPTIONS" != x && \
1299 ac_link="$ac_link $GCC_LINK_TEST_OPTIONS"
1301 test "x$NON_GCC_LINK_TEST_OPTIONS" != x && \
1302 ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
1305 dnl We need -znocombreloc if we're using a relatively recent GNU ld.
1306 dnl If we can link with the flag, it shouldn't do any harm anyhow.
1307 dnl Treat GCC specially since it just gives a non-fatal 'unrecognized option'
1308 dnl if not built to support GNU ld.
1310 dnl For a long time, -znocombreloc was added to LDFLAGS rather than
1311 dnl LD_SWITCH_SYSTEM_TEMACS. That is:
1312 dnl * inappropriate, as LDFLAGS is a user option but this is essential.
1313 dnl Eg "make LDFLAGS=... all" could run into problems,
1314 dnl http://bugs.debian.org/684788
1315 dnl * unnecessary, since temacs is the only thing that actually needs it.
1316 dnl Indeed this is where it was originally, prior to:
1317 dnl http://lists.gnu.org/archive/html/emacs-pretest-bug/2004-03/msg00170.html
1318 late_LDFLAGS="$LDFLAGS"
1319 if test x$GCC = xyes; then
1320 LDFLAGS_NOCOMBRELOC="-Wl,-znocombreloc"
1322 LDFLAGS_NOCOMBRELOC="-znocombreloc"
1325 LDFLAGS="$LDFLAGS $LDFLAGS_NOCOMBRELOC"
1327 AC_MSG_CHECKING([for -znocombreloc])
1328 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1329 [AC_MSG_RESULT(yes)],
1330 LDFLAGS_NOCOMBRELOC=
1331 [AC_MSG_RESULT(no)])
1333 LDFLAGS="$late_LDFLAGS"
1335 AC_CACHE_CHECK([whether addresses are sanitized],
1336 [emacs_cv_sanitize_address],
1339 [[#ifndef __has_feature
1340 #define __has_feature(f) 0
1342 #if defined __SANITIZE_ADDRESS__ || __has_feature (address_sanitizer)
1344 error "Addresses are not sanitized.";
1347 [emacs_cv_sanitize_address=yes],
1348 [emacs_cv_sanitize_address=no])])
1350 dnl The function dump-emacs will not be defined and temacs will do
1351 dnl (load "loadup") automatically unless told otherwise.
1352 test "x$CANNOT_DUMP" = "x" && CANNOT_DUMP=no
1354 nacl) CANNOT_DUMP=yes ;;
1357 if test "$CANNOT_DUMP" = "yes"; then
1358 AC_DEFINE(CANNOT_DUMP, 1, [Define if Emacs cannot be dumped on your system.])
1359 elif test "$emacs_cv_sanitize_address" = yes; then
1360 AC_MSG_WARN([[Addresses are sanitized; suggest CANNOT_DUMP=yes]])
1363 AC_SUBST(CANNOT_DUMP)
1366 UNEXEC_OBJ=unexelf.o
1368 # MSDOS uses unexcoff.o
1370 UNEXEC_OBJ=unexaix.o
1376 UNEXEC_OBJ=unexmacosx.o
1379 UNEXEC_OBJ=unexhp9k800.o
1382 UNEXEC_OBJ=unexw32.o
1385 # Use the Solaris dldump() function, called from unexsol.c, to dump
1386 # emacs, instead of the generic ELF dump code found in unexelf.c.
1387 # The resulting binary has a complete symbol table, and is better
1388 # for debugging and other observability tools (debuggers, pstack, etc).
1390 # If you encounter a problem using dldump(), please consider sending
1391 # a message to the OpenSolaris tools-linking mailing list:
1392 # http://mail.opensolaris.org/mailman/listinfo/tools-linking
1394 # It is likely that dldump() works with older Solaris too, but this has
1395 # not been tested, so for now this change is for Solaris 10 or newer.
1396 UNEXEC_OBJ=unexsol.o
1399 test "$CANNOT_DUMP" = "yes" && UNEXEC_OBJ=
1404 ## Let 'ld' find image libs and similar things in /usr/local/lib.
1405 ## The system compiler, GCC, has apparently been modified to not
1406 ## look there, contrary to what a stock GCC would do.
1407 ### It's not our place to do this. See bug#10313#17.
1408 ### LD_SWITCH_SYSTEM=-L/usr/local/lib
1413 ## cpp test was "ifdef __mips__", but presumably this is equivalent...
1414 case $host_cpu in mips*) LD_SWITCH_SYSTEM="-G 0";; esac
1418 ### It's not our place to do this. See bug#10313#17.
1419 ### LD_SWITCH_SYSTEM="-Wl,-rpath,/usr/pkg/lib -L/usr/pkg/lib -Wl,-rpath,/usr/local/lib -L/usr/local/lib"
1424 ## Han Boetes <han@boetes.org> says this is necessary,
1425 ## otherwise Emacs dumps core on elf systems.
1426 LD_SWITCH_SYSTEM="-Z"
1429 AC_SUBST(LD_SWITCH_SYSTEM)
1431 ac_link="$ac_link $LD_SWITCH_SYSTEM"
1433 ## This setting of LD_SWITCH_SYSTEM references LD_SWITCH_X_SITE_RPATH,
1434 ## which has not been defined yet. When this was handled with cpp,
1435 ## it was expanded to null when configure sourced the s/*.h file.
1436 ## Thus LD_SWITCH_SYSTEM had different values in configure and the Makefiles.
1437 ## FIXME it would be cleaner to put this in LD_SWITCH_SYSTEM_TEMACS
1438 ## (or somesuch), but because it is supposed to go at the _front_
1439 ## of LD_SWITCH_SYSTEM, we cannot do that in exactly the same way.
1440 ## Compare with the gnu-linux case below, which added to the end
1441 ## of LD_SWITCH_SYSTEM, and so can instead go at the front of
1442 ## LD_SWITCH_SYSTEM_TEMACS.
1445 LD_SWITCH_SYSTEM="\$(LD_SWITCH_X_SITE_RPATH) $LD_SWITCH_SYSTEM" ;;
1452 AC_CHECK_DECL([__ELF__])
1453 if test "$ac_cv_have_decl___ELF__" = "yes"; then
1454 ## With ELF, make sure that all common symbols get allocated to in the
1455 ## data section. Otherwise, the dump of temacs may miss variables in
1456 ## the shared library that have been initialized. For example, with
1457 ## GNU libc, __malloc_initialized would normally be resolved to the
1458 ## shared library's .bss section, which is fatal.
1459 if test "x$GCC" = "xyes"; then
1460 C_SWITCH_MACHINE="-fno-common"
1462 AC_MSG_ERROR([Non-GCC compilers are not supported.])
1465 dnl This was the unexalpha.c case. Removed in 24.1, 2010-07-24,
1466 dnl albeit under the mistaken assumption that said file
1467 dnl was no longer used.
1468 AC_MSG_ERROR([Non-ELF systems are not supported since Emacs 24.1.])
1472 AC_SUBST(C_SWITCH_MACHINE)
1474 AC_SUBST(UNEXEC_OBJ)
1477 ## Some programs in src produce warnings saying certain subprograms
1478 ## are too complex and need a MAXMEM value greater than 2000 for
1479 ## additional optimization. --nils@exp-math.uni-essen.de
1480 test "$opsys" = "aix4.2" && test "x$GCC" != "xyes" && \
1481 C_SWITCH_SYSTEM="-ma -qmaxmem=4000"
1482 if test "$opsys" = "mingw32"; then
1483 case "$canonical" in
1484 x86_64-*-mingw*) C_SWITCH_SYSTEM="-mtune=generic" ;;
1485 *) C_SWITCH_SYSTEM="-mtune=pentium4" ;;
1488 ## gnu-linux might need -D_BSD_SOURCE on old libc5 systems.
1489 ## It is redundant in glibc2, since we define _GNU_SOURCE.
1490 AC_SUBST(C_SWITCH_SYSTEM)
1495 ## IBM's X11R5 uses -lIM and -liconv in AIX 3.2.2.
1496 aix4-2) LIBS_SYSTEM="-lrts -lIM -liconv" ;;
1498 freebsd|dragonfly) LIBS_SYSTEM="-lutil" ;;
1500 hpux*) LIBS_SYSTEM="-l:libdld.sl" ;;
1502 sol2*) LIBS_SYSTEM="-lsocket -lnsl" ;;
1504 ## Motif needs -lgen.
1505 unixware) LIBS_SYSTEM="-lsocket -lnsl -lelf -lgen" ;;
1508 AC_SUBST(LIBS_SYSTEM)
1510 ### Make sure subsequent tests use flags consistent with the build flags.
1512 if test x"${OVERRIDE_CPPFLAGS}" != x; then
1513 CPPFLAGS="${OVERRIDE_CPPFLAGS}"
1515 CPPFLAGS="$C_SWITCH_SYSTEM $C_SWITCH_MACHINE $CPPFLAGS"
1518 # Suppress obsolescent Autoconf test for size_t; Emacs assumes C99 or better.
1519 AC_DEFUN([AC_TYPE_SIZE_T])
1520 # Likewise for obsolescent test for uid_t, gid_t; Emacs assumes them.
1521 AC_DEFUN([AC_TYPE_UID_T])
1523 # sqrt and other floating-point functions such as fmod and frexp
1524 # are found in -lm on many systems.
1526 AC_SEARCH_LIBS([sqrt], [m])
1527 if test "X$LIBS" = "X$OLD_LIBS"; then
1530 LIB_MATH=$ac_cv_search_sqrt
1534 dnl Current possibilities handled by sed (aix4-2 -> aix,
1535 dnl gnu-linux -> gnu/linux, etc.):
1536 dnl gnu, gnu/linux, gnu/kfreebsd, aix, cygwin, darwin, hpux.
1537 dnl And special cases: berkeley-unix, usg-unix-v, ms-dos, windows-nt.
1538 SYSTEM_TYPE=`echo $opsys | sed -e 's/[[0-9]].*//' -e 's|-|/|'`
1545 ## Adding -lm confuses the dynamic linker, so omit it.
1548 freebsd | dragonfly )
1549 SYSTEM_TYPE=berkeley-unix
1551 gnu-linux | gnu-kfreebsd )
1553 hpux10-20 | hpux11 )
1557 SYSTEM_TYPE=windows-nt
1559 dnl NB this may be adjusted below.
1561 SYSTEM_TYPE=berkeley-unix
1565 SYSTEM_TYPE=usg-unix-v
1571 AC_DEFINE_UNQUOTED(SYSTEM_TYPE, "$SYSTEM_TYPE",
1572 [The type of system you are compiling for; sets 'system-type'.])
1573 AC_SUBST([SYSTEM_TYPE])
1576 pre_PKG_CONFIG_CFLAGS=$CFLAGS
1577 pre_PKG_CONFIG_LIBS=$LIBS
1579 PKG_PROG_PKG_CONFIG(0.9.0)
1581 dnl EMACS_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4)
1582 dnl acts like PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4,
1583 dnl HAVE_GSTUFF=yes, HAVE_GSTUFF=no) -- see pkg-config man page --
1584 dnl except that it postprocesses CFLAGS as needed for --enable-gcc-warnings.
1585 dnl EMACS_CHECK_MODULES accepts optional 3rd and 4th arguments that
1586 dnl can take the place of the default HAVE_GSTUFF=yes and HAVE_GSTUFF=no
1588 AC_DEFUN([EMACS_CHECK_MODULES],
1589 [PKG_CHECK_MODULES([$1], [$2],
1590 [$1_CFLAGS=`AS_ECHO(["$$1_CFLAGS"]) | sed -e "$edit_cflags"`
1591 m4_default([$3], [HAVE_$1=yes])],
1592 [m4_default([$4], [HAVE_$1=no])])])
1595 if test "${with_sound}" != "no"; then
1596 # Sound support for GNU/Linux, the free BSDs, MinGW, and Cygwin.
1597 AC_CHECK_HEADERS([machine/soundcard.h sys/soundcard.h soundcard.h mmsystem.h],
1598 have_sound_header=yes, [], [
1600 #define WIN32_LEAN_AND_MEAN
1601 #include <windows.h>
1604 test "${with_sound}" = "oss" && test "${have_sound_header}" != "yes" && \
1605 AC_MSG_ERROR([OSS sound support requested but not found.])
1607 if test "${with_sound}" = "bsd-ossaudio" || test "${with_sound}" = "yes"; then
1608 # Emulation library used on NetBSD.
1609 AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
1610 test "${with_sound}" = "bsd-ossaudio" && test -z "$LIBSOUND" && \
1611 AC_MSG_ERROR([bsd-ossaudio sound support requested but not found.])
1612 dnl FIXME? If we did find ossaudio, should we set with_sound=bsd-ossaudio?
1613 dnl Traditionally, we go on to check for alsa too. Does that make sense?
1617 if test "${with_sound}" = "alsa" || test "${with_sound}" = "yes"; then
1619 ALSA_MODULES="alsa >= $ALSA_REQUIRED"
1620 EMACS_CHECK_MODULES([ALSA], [$ALSA_MODULES])
1621 if test $HAVE_ALSA = yes; then
1622 SAVE_CFLAGS="$CFLAGS"
1624 CFLAGS="$ALSA_CFLAGS $CFLAGS"
1625 LIBS="$ALSA_LIBS $LIBS"
1626 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <asoundlib.h>]], [[snd_lib_error_set_handler (0);]])],
1627 emacs_alsa_normal=yes,
1628 emacs_alsa_normal=no)
1629 if test "$emacs_alsa_normal" != yes; then
1630 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <alsa/asoundlib.h>]],
1631 [[snd_lib_error_set_handler (0);]])],
1632 emacs_alsa_subdir=yes,
1633 emacs_alsa_subdir=no)
1634 if test "$emacs_alsa_subdir" != yes; then
1635 AC_MSG_ERROR([pkg-config found alsa, but it does not compile. See config.log for error messages.])
1637 ALSA_CFLAGS="$ALSA_CFLAGS -DALSA_SUBDIR_INCLUDE"
1640 CFLAGS="$SAVE_CFLAGS"
1642 LIBSOUND="$LIBSOUND $ALSA_LIBS"
1643 CFLAGS_SOUND="$CFLAGS_SOUND $ALSA_CFLAGS"
1644 AC_DEFINE(HAVE_ALSA, 1, [Define to 1 if ALSA is available.])
1645 elif test "${with_sound}" = "alsa"; then
1646 AC_MSG_ERROR([ALSA sound support requested but not found.])
1648 fi dnl with_sound = alsa|yes
1650 dnl Define HAVE_SOUND if we have sound support. We know it works and
1651 dnl compiles only on the specified platforms. For others, it
1652 dnl probably doesn't make sense to try.
1653 dnl FIXME So surely we should bypass this whole section if not using
1654 dnl one of these platforms?
1655 if test x$have_sound_header = xyes || test $HAVE_ALSA = yes; then
1657 dnl defined __FreeBSD__ || defined __NetBSD__ || defined __linux__
1658 dnl Adjust the --with-sound help text if you change this.
1659 gnu-linux|freebsd|netbsd|mingw32|cygwin)
1660 AC_DEFINE(HAVE_SOUND, 1, [Define to 1 if you have sound support.])
1666 AC_SUBST(CFLAGS_SOUND)
1669 dnl checks for header files
1670 AC_CHECK_HEADERS_ONCE(
1677 sys/utsname.h pwd.h utmp.h util.h sys/prctl.h)
1679 AC_CACHE_CHECK([for ADDR_NO_RANDOMIZE],
1680 [emacs_cv_personality_addr_no_randomize],
1682 [AC_LANG_PROGRAM([[#include <sys/personality.h>]],
1683 [[personality (personality (0xffffffff)
1684 | ADDR_NO_RANDOMIZE)]])],
1685 [emacs_cv_personality_addr_no_randomize=yes],
1686 [emacs_cv_personality_addr_no_randomize=no])])
1687 if test $emacs_cv_personality_addr_no_randomize = yes; then
1688 AC_DEFINE([HAVE_PERSONALITY_ADDR_NO_RANDOMIZE], [1],
1689 [Define to 1 if personality flag ADDR_NO_RANDOMIZE exists.])
1692 # Note that Solaris has sys/sysinfo.h which defines struct
1693 # sysinfo as well. To make sure that we're using GNU/Linux
1694 # sysinfo, we explicitly set one of its fields.
1695 if test "$ac_cv_header_sys_sysinfo_h" = yes; then
1696 AC_MSG_CHECKING([if Linux sysinfo may be used])
1697 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1698 [[struct sysinfo si;
1701 emacs_cv_linux_sysinfo=yes, emacs_cv_linux_sysinfo=no)
1702 AC_MSG_RESULT($emacs_cv_linux_sysinfo)
1703 if test $emacs_cv_linux_sysinfo = yes; then
1704 AC_DEFINE([HAVE_LINUX_SYSINFO], 1, [Define to 1 if you have Linux sysinfo function.])
1705 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1706 [[struct sysinfo si; return si.mem_unit]])],
1707 AC_DEFINE(LINUX_SYSINFO_UNIT, 1,
1708 [Define to 1 if Linux sysinfo sizes are in multiples of mem_unit bytes.]))
1712 dnl On Solaris 8 there's a compilation warning for term.h because
1713 dnl it doesn't define 'bool'.
1714 AC_CHECK_HEADERS(term.h, , , -)
1716 AC_CHECK_DECLS([sys_siglist], [], [], [[#include <signal.h>
1718 if test $ac_cv_have_decl_sys_siglist != yes; then
1719 # For Tru64, at least:
1720 AC_CHECK_DECLS([__sys_siglist], [], [], [[#include <signal.h>
1725 AC_CHECK_HEADERS_ONCE(sys/socket.h)
1726 AC_CHECK_HEADERS(net/if.h, , , [AC_INCLUDES_DEFAULT
1727 #if HAVE_SYS_SOCKET_H
1728 #include <sys/socket.h>
1730 AC_CHECK_HEADERS(ifaddrs.h, , , [AC_INCLUDES_DEFAULT
1731 #if HAVE_SYS_SOCKET_H
1732 #include <sys/socket.h>
1734 AC_CHECK_HEADERS(net/if_dl.h, , , [AC_INCLUDES_DEFAULT
1735 #if HAVE_SYS_SOCKET_H
1736 #include <sys/socket.h>
1739 dnl checks for structure members
1740 AC_CHECK_MEMBERS([struct ifreq.ifr_flags, struct ifreq.ifr_hwaddr,
1741 struct ifreq.ifr_netmask, struct ifreq.ifr_broadaddr,
1742 struct ifreq.ifr_addr,
1743 struct ifreq.ifr_addr.sa_len], , ,
1744 [AC_INCLUDES_DEFAULT
1745 #if HAVE_SYS_SOCKET_H
1746 #include <sys/socket.h>
1752 dnl Check for endianness.
1753 dnl AC_C_BIGENDIAN is done by gnulib.
1755 dnl check for Make feature
1758 AUTODEPEND_PARENTS='lib src'
1759 dnl check if we have GCC and autodepend is on.
1760 if test "$GCC" = yes && test "$ac_enable_autodepend" = yes; then
1761 AC_MSG_CHECKING([whether gcc understands -MMD -MF])
1762 SAVE_CFLAGS="$CFLAGS"
1763 CFLAGS="$CFLAGS -MMD -MF deps.d -MP"
1764 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])], , ac_enable_autodepend=no)
1765 CFLAGS="$SAVE_CFLAGS"
1766 test -f deps.d || ac_enable_autodepend=no
1768 AC_MSG_RESULT([$ac_enable_autodepend])
1769 if test $ac_enable_autodepend = yes; then
1773 AC_SUBST(AUTO_DEPEND)
1775 dnl checks for operating system services
1776 AC_SYS_LONG_FILE_NAMES
1778 #### Choose a window system.
1780 ## We leave window_system equal to none if
1781 ## we end up building without one. Any new window system should
1782 ## set window_system to an appropriate value and add objects to
1783 ## window-system-specific substs.
1787 if test "$no_x" != yes; then
1791 LD_SWITCH_X_SITE_RPATH=
1792 if test "${x_libraries}" != NONE; then
1793 if test -n "${x_libraries}"; then
1794 LD_SWITCH_X_SITE=-L`AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -L/g'`
1795 LD_SWITCH_X_SITE_RPATH=-Wl,-rpath,`
1796 AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -Wl,-rpath,/g'
1799 x_default_search_path=""
1800 x_search_path=${x_libraries}
1801 if test -z "${x_search_path}"; then
1802 x_search_path=/usr/lib
1804 for x_library in `AS_ECHO(["$x_search_path:"]) | \
1805 sed -e "s/:/ /g" -e p -e "s:/lib[[^ /]]* :/share :g"`; do
1807 ${x_library}/X11/%L/%T/%N%C%S:\
1808 ${x_library}/X11/%l/%T/%N%C%S:\
1809 ${x_library}/X11/%T/%N%C%S:\
1810 ${x_library}/X11/%L/%T/%N%S:\
1811 ${x_library}/X11/%l/%T/%N%S:\
1812 ${x_library}/X11/%T/%N%S"
1813 if test x"${x_default_search_path}" = x; then
1814 x_default_search_path=${x_search_path}
1816 x_default_search_path="${x_search_path}:${x_default_search_path}"
1820 AC_SUBST(LD_SWITCH_X_SITE_RPATH)
1822 if test "${x_includes}" != NONE && test -n "${x_includes}"; then
1823 C_SWITCH_X_SITE=$isystem`AS_ECHO(["$x_includes"]) | sed -e "s/:/ $isystem/g"`
1826 if test x"${x_includes}" = x; then
1827 bitmapdir=/usr/include/X11/bitmaps
1829 # accumulate include directories that have X11 bitmap subdirectories
1831 for bmd in `AS_ECHO(["$x_includes"]) | sed -e 's/:/ /g'`; do
1832 if test -d "${bmd}/X11/bitmaps"; then
1833 bmd_acc="${bmd_acc}:${bmd}/X11/bitmaps"
1835 if test -d "${bmd}/bitmaps"; then
1836 bmd_acc="${bmd_acc}:${bmd}/bitmaps"
1839 bitmapdir=${bmd_acc#:}
1842 test "${with_ns}" = maybe && test "${opsys}" != darwin && with_ns=no
1844 NS_GNUSTEP_CONFIG=no
1847 tmp_CPPFLAGS="$CPPFLAGS"
1848 tmp_CFLAGS="$CFLAGS"
1849 CPPFLAGS="$CPPFLAGS -x objective-c"
1850 CFLAGS="$CFLAGS -x objective-c"
1853 if test "${with_ns}" != no; then
1854 if test "${opsys}" = darwin; then
1856 ns_appdir=`pwd`/nextstep/Emacs.app
1857 ns_appbindir=${ns_appdir}/Contents/MacOS
1858 ns_appresdir=${ns_appdir}/Contents/Resources
1859 ns_appsrc=Cocoa/Emacs.base
1860 ns_fontfile=macfont.o
1861 elif flags=$( (gnustep-config --objc-flags) 2>/dev/null); then
1863 NS_GNUSTEP_CONFIG=yes
1864 GNU_OBJC_CFLAGS=$flags
1865 LIBS_GNUSTEP=$(gnustep-config --gui-libs) || exit
1866 elif test -f $GNUSTEP_CONFIG_FILE; then
1868 dnl FIXME sourcing this several times in subshells seems inefficient.
1869 GNUSTEP_SYSTEM_HEADERS=$(
1870 . $GNUSTEP_CONFIG_FILE
1871 AS_ECHO(["$GNUSTEP_SYSTEM_HEADERS"])
1873 GNUSTEP_SYSTEM_LIBRARIES=$(
1874 . $GNUSTEP_CONFIG_FILE
1875 AS_ECHO(["$GNUSTEP_SYSTEM_LIBRARIES"])
1877 dnl I seemed to need these as well with GNUstep-startup 0.25.
1878 GNUSTEP_LOCAL_HEADERS=$(
1879 . $GNUSTEP_CONFIG_FILE
1880 AS_ECHO(["$GNUSTEP_LOCAL_HEADERS"])
1882 GNUSTEP_LOCAL_LIBRARIES=$(
1883 . $GNUSTEP_CONFIG_FILE
1884 AS_ECHO(["$GNUSTEP_LOCAL_LIBRARIES"])
1886 test "x${GNUSTEP_LOCAL_HEADERS}" != "x" && \
1887 GNUSTEP_LOCAL_HEADERS="-I${GNUSTEP_LOCAL_HEADERS}"
1888 test "x${GNUSTEP_LOCAL_LIBRARIES}" != "x" && \
1889 GNUSTEP_LOCAL_LIBRARIES="-L${GNUSTEP_LOCAL_LIBRARIES}"
1890 CPPFLAGS="$CPPFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1891 CFLAGS="$CFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1892 LDFLAGS="$LDFLAGS -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES}"
1893 LIBS_GNUSTEP="-lgnustep-gui -lgnustep-base -lobjc -lpthread"
1894 dnl GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS to 0 or 1.
1895 dnl If they had chosen to either define it or not, we could have
1896 dnl just used AC_CHECK_DECL here.
1897 AC_CACHE_CHECK(if GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS,
1898 emacs_cv_objc_exceptions,
1899 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <GNUstepBase/GSConfig.h>]],
1900 [[#if defined BASE_NATIVE_OBJC_EXCEPTIONS && BASE_NATIVE_OBJC_EXCEPTIONS > 0
1904 #endif]])], emacs_cv_objc_exceptions=yes, emacs_cv_objc_exceptions=no ) )
1905 if test $emacs_cv_objc_exceptions = yes; then
1906 dnl _NATIVE_OBJC_EXCEPTIONS is used by the GNUstep headers.
1907 AC_DEFINE(_NATIVE_OBJC_EXCEPTIONS, 1,
1908 [Define if GNUstep uses ObjC exceptions.])
1909 GNU_OBJC_CFLAGS="-fobjc-exceptions"
1912 if test $NS_IMPL_GNUSTEP = yes; then
1913 ns_appdir=`pwd`/nextstep/Emacs.app
1914 ns_appbindir=${ns_appdir}
1915 ns_appresdir=${ns_appdir}/Resources
1916 ns_appsrc=GNUstep/Emacs.base
1917 ns_fontfile=nsfont.o
1920 dnl This is only used while we test the NS headers, it gets reset below.
1921 CPPFLAGS="$CPPFLAGS $GNU_OBJC_CFLAGS"
1922 CFLAGS="$CFLAGS $GNU_OBJC_CFLAGS"
1924 AC_CHECK_HEADER([AppKit/AppKit.h], [HAVE_NS=yes],
1925 [AC_MSG_ERROR([The include files (AppKit/AppKit.h etc) that
1926 are required for a Nextstep build are missing or cannot be compiled.
1927 Either fix this, or re-configure with the option '--without-ns'.])])
1930 if test "${NS_IMPL_COCOA}" = "yes"; then
1931 AC_MSG_CHECKING([for Mac OS X 10.6 or newer])
1932 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <AppKit/AppKit.h>],
1934 #ifdef MAC_OS_X_VERSION_MAX_ALLOWED
1935 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
1938 error "Mac OS X 10.6 or newer required";
1942 ns_osx_have_106=yes,
1944 AC_MSG_RESULT([$ns_osx_have_106])
1946 if test $ns_osx_have_106 = no; then
1947 AC_MSG_ERROR([Mac OS X 10.6 or newer is required]);
1952 AC_SUBST(LIBS_GNUSTEP)
1954 INSTALL_ARCH_INDEP_EXTRA=install-etc
1955 ns_self_contained=no
1958 if test "${HAVE_NS}" = yes; then
1959 if test "$with_toolkit_scroll_bars" = "no"; then
1960 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for Nextstep.])
1963 window_system=nextstep
1964 # set up packaging dirs
1965 if test "${EN_NS_SELF_CONTAINED}" = yes; then
1966 ns_self_contained=yes
1967 prefix=${ns_appresdir}
1968 exec_prefix=${ns_appbindir}
1969 dnl This one isn't really used, only archlibdir is.
1970 libexecdir="\${ns_appbindir}/libexec"
1971 archlibdir="\${ns_appbindir}/libexec"
1972 etcdocdir="\${ns_appresdir}/etc"
1973 etcdir="\${ns_appresdir}/etc"
1974 dnl FIXME maybe set datarootdir instead.
1975 dnl That would also get applications, icons, man.
1976 infodir="\${ns_appresdir}/info"
1977 mandir="\${ns_appresdir}/man"
1978 lispdir="\${ns_appresdir}/lisp"
1979 test "$locallisppathset" = no && locallisppath=""
1980 INSTALL_ARCH_INDEP_EXTRA=
1983 NS_OBJC_OBJ="nsterm.o nsfns.o nsmenu.o nsselect.o nsimage.o $ns_fontfile"
1985 CFLAGS="$tmp_CFLAGS"
1986 CPPFLAGS="$tmp_CPPFLAGS"
1987 AC_SUBST(INSTALL_ARCH_INDEP_EXTRA)
1988 AC_SUBST(ns_self_contained)
1990 AC_SUBST(NS_OBJC_OBJ)
1992 if test "${HAVE_NS}" = yes; then
1994 [if the Objective C compiler supports instancetype],
1995 [emacs_cv_objc_instancetype],
1996 [AC_LANG_PUSH([Objective C])
1998 [AC_LANG_SOURCE([[@interface Test
1999 + (instancetype)test;
2001 emacs_cv_objc_instancetype=yes,
2002 emacs_cv_objc_instancetype=no)
2003 AC_LANG_POP([Objective C])])
2005 if test x$emacs_cv_objc_instancetype = xyes ; then
2006 AC_DEFINE(NATIVE_OBJC_INSTANCETYPE, 1,
2007 [Define if ObjC compiler supports instancetype natively.])
2019 if test "${with_w32}" != no; then
2022 AC_CHECK_HEADER([windows.h], [HAVE_W32=yes],
2023 [AC_MSG_ERROR(['--with-w32' was specified, but windows.h
2024 cannot be found.])])
2027 ## Using --with-w32 with MinGW is a no-op, but we allow it.
2030 AC_MSG_ERROR([Using w32 with an autotools build is only supported for Cygwin and MinGW32.])
2035 if test "${opsys}" = "mingw32"; then
2036 AC_MSG_CHECKING([whether Windows API headers are recent enough])
2037 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2038 #include <windows.h>
2039 #include <usp10.h>]],
2040 [[PIMAGE_NT_HEADERS pHeader;
2041 PIMAGE_SECTION_HEADER pSection = IMAGE_FIRST_SECTION(pHeader)]])],
2042 [emacs_cv_w32api=yes
2045 AC_MSG_RESULT($emacs_cv_w32api)
2046 if test "${emacs_cv_w32api}" = "no"; then
2047 AC_MSG_ERROR([the Windows API headers are too old to support this build.])
2058 if test "${HAVE_W32}" = "yes"; then
2059 AC_DEFINE(HAVE_NTGUI, 1, [Define to use native MS Windows GUI.])
2060 if test "$with_toolkit_scroll_bars" = "no"; then
2061 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for w32 build.])
2063 AC_CHECK_TOOL(WINDRES, [windres],
2064 [AC_MSG_ERROR([No resource compiler found.])])
2065 W32_OBJ="w32fns.o w32menu.o w32reg.o w32font.o w32term.o"
2066 W32_OBJ="$W32_OBJ w32xfns.o w32select.o w32uniscribe.o"
2067 EMACSRES="emacs.res"
2068 case "$canonical" in
2069 x86_64-*-*) EMACS_MANIFEST="emacs-x64.manifest" ;;
2070 *) EMACS_MANIFEST="emacs-x86.manifest" ;;
2072 dnl Construct something of the form "24,4,0,0" with 4 components.
2073 comma_version=`echo "${PACKAGE_VERSION}.0.0" | sed -e 's/\./,/g' -e 's/^\([[^,]]*,[[^,]]*,[[^,]]*,[[^,]]*\).*/\1/'`
2075 comma_space_version=`echo "$comma_version" | sed 's/,/, /g'`
2076 AC_SUBST(comma_version)
2077 AC_SUBST(comma_space_version)
2078 AC_CONFIG_FILES([nt/emacs.rc nt/emacsclient.rc])
2079 if test "${opsys}" = "cygwin"; then
2080 W32_LIBS="$W32_LIBS -lkernel32 -luser32 -lgdi32 -lole32 -lcomdlg32"
2081 W32_LIBS="$W32_LIBS -lusp10 -lcomctl32 -lwinspool"
2082 # Tell the linker that emacs.res is an object (which we compile from
2083 # the rc file), not a linker script.
2084 W32_RES_LINK="-Wl,emacs.res"
2086 W32_OBJ="$W32_OBJ w32.o w32console.o w32heap.o w32inevt.o w32proc.o"
2087 W32_LIBS="$W32_LIBS -lwinmm -lgdi32 -lcomdlg32"
2088 W32_LIBS="$W32_LIBS -lmpr -lwinspool -lole32 -lcomctl32 -lusp10"
2089 W32_RES_LINK="\$(EMACSRES)"
2090 CLIENTRES="emacsclient.res"
2091 CLIENTW="emacsclientw\$(EXEEXT)"
2092 FIRSTFILE_OBJ=firstfile.o
2095 LIBS_ECLIENT="-lcomctl32"
2096 LIB_WSOCK32="-lwsock32"
2097 NTLIB="ntlib.$ac_objext"
2098 XARGS_LIMIT="-s 10000"
2104 AC_SUBST(EMACS_MANIFEST)
2107 AC_SUBST(W32_RES_LINK)
2108 AC_SUBST(FIRSTFILE_OBJ)
2111 AC_SUBST(LIBS_ECLIENT)
2112 AC_SUBST(LIB_WSOCK32)
2114 AC_SUBST(XARGS_LIMIT)
2116 if test "${HAVE_W32}" = "yes"; then
2121 ## $window_system is now set to the window system we will
2129 case "${window_system}" in
2134 case "${with_x_toolkit}" in
2135 athena | lucid ) USE_X_TOOLKIT=LUCID ;;
2136 motif ) USE_X_TOOLKIT=MOTIF ;;
2138 term_header=gtkutil.h
2139 dnl Don't set this for GTK. A lot of tests below assumes Xt when
2140 dnl USE_X_TOOLKIT is set.
2141 USE_X_TOOLKIT=none ;;
2142 gtk2 ) with_gtk2=yes
2143 term_header=gtkutil.h
2144 USE_X_TOOLKIT=none ;;
2145 gtk3 ) with_gtk3=yes
2146 term_header=gtkutil.h
2147 USE_X_TOOLKIT=none ;;
2148 no ) USE_X_TOOLKIT=none ;;
2149 dnl If user did not say whether to use a toolkit, make this decision later:
2150 dnl use the toolkit if we have gtk, or X11R5 or newer.
2151 * ) USE_X_TOOLKIT=maybe ;;
2155 term_header=nsterm.h
2158 term_header=w32term.h
2162 if test "$window_system" = none && test "X$with_x" != "Xno"; then
2163 AC_CHECK_PROG(HAVE_XSERVER, X, true, false)
2164 if test "$HAVE_XSERVER" = true ||
2165 test -n "$DISPLAY" ||
2167 for emacs_libX11 in /usr/lib/libX11.*; do break; done
2168 test "$emacs_libX11" != '/usr/lib/libX11.*'
2171 AC_MSG_ERROR([You seem to be running X, but no X development libraries
2172 were found. You should install the relevant development files for X
2173 and for the toolkit you want, such as Gtk+ or Motif. Also make
2174 sure you have development files for image handling, i.e.
2175 tiff, gif, jpeg, png and xpm.
2176 If you are sure you want Emacs compiled without X window support, pass
2182 # Does the opsystem file prohibit the use of the GNU malloc?
2183 # Assume not, until told otherwise.
2187 [whether malloc is Doug Lea style],
2188 [emacs_cv_var_doug_lea_malloc],
2189 [emacs_cv_var_doug_lea_malloc=no
2190 dnl Hooks do not work with address sanitization.
2191 if test "$emacs_cv_sanitize_address" != yes; then
2194 [[#include <malloc.h>
2195 static void hook (void) {}]],
2196 [[malloc_set_state (malloc_get_state ());
2197 __after_morecore_hook = hook;
2198 __malloc_initialize_hook = hook;]])],
2199 [emacs_cv_var_doug_lea_malloc=yes])
2201 doug_lea_malloc=$emacs_cv_var_doug_lea_malloc
2206 test "$CANNOT_DUMP" = yes ||
2208 ## darwin ld insists on the use of malloc routines in the System framework.
2209 darwin | mingw32 | nacl | sol2-10) ;;
2210 cygwin) hybrid_malloc=yes
2212 *) test "$ac_cv_func_sbrk" = yes && system_malloc=$emacs_cv_sanitize_address;;
2215 if test "${system_malloc}" != yes && test "${doug_lea_malloc}" != yes \
2216 && test "${UNEXEC_OBJ}" = unexelf.o; then
2222 if test "${system_malloc}" = "yes"; then
2223 AC_DEFINE([SYSTEM_MALLOC], 1,
2224 [Define to 1 to use the system memory allocator, even if it is not
2228 (The GNU allocators don't work with this system configuration.)"
2230 elif test "$hybrid_malloc" = yes; then
2231 AC_DEFINE(HYBRID_MALLOC, 1,
2232 [Define to use gmalloc before dumping and the system malloc after.])
2235 GNU_MALLOC_reason=" (only before dumping)"
2236 GMALLOC_OBJ=gmalloc.o
2239 test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
2240 VMLIMIT_OBJ=vm-limit.o
2242 AC_CHECK_HEADERS([sys/vlimit.h])
2243 AC_CACHE_CHECK([for data_start], [emacs_cv_data_start],
2246 [[extern char data_start[]; char ch;]],
2247 [[return data_start < &ch;]])],
2248 [emacs_cv_data_start=yes],
2249 [emacs_cv_data_start=no])])
2250 if test $emacs_cv_data_start = yes; then
2251 AC_DEFINE([HAVE_DATA_START], 1,
2252 [Define to 1 if data_start is the address of the start
2253 of the main data segment.])
2256 AC_SUBST([HYBRID_MALLOC])
2257 AC_SUBST(GMALLOC_OBJ)
2258 AC_SUBST(VMLIMIT_OBJ)
2260 if test "$doug_lea_malloc" = "yes" && test "$hybrid_malloc" != yes; then
2261 if test "$GNU_MALLOC" = yes ; then
2263 (Using Doug Lea's new malloc from the GNU C Library.)"
2265 AC_DEFINE(DOUG_LEA_MALLOC, 1,
2266 [Define to 1 if the system memory allocator is Doug Lea style,
2267 with malloc hooks and malloc_set_state.])
2269 ## Use mmap directly for allocating larger buffers.
2270 ## FIXME this comes from src/s/{gnu,gnu-linux}.h:
2271 ## #ifdef DOUG_LEA_MALLOC; #undef REL_ALLOC; #endif
2272 ## Does the AC_FUNC_MMAP test below make this check unnecessary?
2274 mingw32|gnu*) REL_ALLOC=no ;;
2278 if test x"${REL_ALLOC}" = x; then
2279 REL_ALLOC=${GNU_MALLOC}
2282 use_mmap_for_buffers=no
2284 mingw32) use_mmap_for_buffers=yes ;;
2288 if test $use_mmap_for_buffers = yes; then
2289 AC_DEFINE(USE_MMAP_FOR_BUFFERS, 1, [Define to use mmap to allocate buffer text.])
2293 LIBS="$LIBS_SYSTEM $LIBS"
2295 dnl FIXME replace main with a function we actually want from this library.
2296 AC_CHECK_LIB(Xbsd, main, LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -lXbsd")
2298 dnl Check for the POSIX thread library.
2300 AC_CHECK_HEADERS_ONCE(pthread.h)
2301 if test "$ac_cv_header_pthread_h" && test "$opsys" != "mingw32"; then
2302 AC_CACHE_CHECK([for pthread library],
2303 [emacs_cv_pthread_lib],
2304 [emacs_cv_pthread_lib=no
2306 for emacs_pthread_lib in 'none needed' -lpthread; do
2307 case $emacs_pthread_lib in
2308 -*) LIBS="$OLD_LIBS $emacs_pthread_lib";;
2312 [[#include <pthread.h>
2314 sigset_t old_mask, new_mask;
2315 void noop (void) {}]],
2316 [[pthread_t th = pthread_self ();
2318 status += pthread_create (&th, 0, 0, 0);
2319 status += pthread_sigmask (SIG_BLOCK, &new_mask, &old_mask);
2320 status += pthread_kill (th, 0);
2321 #if ! (defined SYSTEM_MALLOC || defined HYBRID_MALLOC \
2322 || defined DOUG_LEA_MALLOC)
2323 /* Test for pthread_atfork only if gmalloc uses it,
2324 as older-style hosts like MirBSD 10 lack it. */
2325 status += pthread_atfork (noop, noop, noop);
2328 [emacs_cv_pthread_lib=$emacs_pthread_lib])
2330 if test "$emacs_cv_pthread_lib" != no; then
2334 if test "$emacs_cv_pthread_lib" != no; then
2335 AC_DEFINE([HAVE_PTHREAD], 1, [Define to 1 if you have POSIX threads.])
2336 case $emacs_cv_pthread_lib in
2337 -*) LIB_PTHREAD=$emacs_cv_pthread_lib;;
2339 ac_cv_func_pthread_sigmask=yes
2340 # Some systems optimize for single-threaded programs by default, and
2341 # need special flags to disable these optimizations. For example, the
2342 # definition of 'errno' in <errno.h>.
2345 AC_DEFINE([_REENTRANT], 1,
2346 [Define to 1 if your system requires this in multithreaded code.]);;
2348 AC_DEFINE([_THREAD_SAFE], 1,
2349 [Define to 1 if your system requires this in multithreaded code.]);;
2353 AC_SUBST([LIB_PTHREAD])
2355 AC_MSG_CHECKING([for thread support])
2357 if test "$with_threads" = yes; then
2358 if test "$emacs_cv_pthread_lib" != no; then
2359 AC_DEFINE(THREADS_ENABLED, 1,
2360 [Define to 1 if you want elisp thread support.])
2362 elif test "${opsys}" = "mingw32"; then
2363 dnl MinGW can do native Windows threads even without pthreads
2364 AC_DEFINE(THREADS_ENABLED, 1,
2365 [Define to 1 if you want elisp thread support.])
2369 AC_MSG_RESULT([$threads_enabled])
2371 dnl Check for need for bigtoc support on IBM AIX
2375 AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
2377 yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
2378 *) gdb_cv_bigtoc=-bbigtoc ;;
2381 LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
2382 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[int i;]])], [], [gdb_cv_bigtoc=])
2387 # Change CFLAGS, CPPFLAGS, and LIBS temporarily so that C_SWITCH_X_SITE
2388 # is for the tests that follow. We set them back later on.
2390 REAL_CFLAGS="$CFLAGS"
2391 REAL_CPPFLAGS="$CPPFLAGS"
2394 if test "${HAVE_X11}" = "yes"; then
2395 DEFS="$C_SWITCH_X_SITE $DEFS"
2396 LDFLAGS="$LDFLAGS $LD_SWITCH_X_SITE"
2398 CFLAGS="$C_SWITCH_X_SITE $CFLAGS"
2399 CPPFLAGS="$C_SWITCH_X_SITE $CPPFLAGS"
2401 # On Solaris, arrange for LD_RUN_PATH to point to the X libraries for tests.
2402 # This is handled by LD_SWITCH_X_SITE_RPATH during the real build,
2403 # but it's more convenient here to set LD_RUN_PATH since this
2404 # also works on hosts that don't understand LD_SWITCH_X_SITE_RPATH.
2405 if test "${x_libraries}" != NONE && test -n "${x_libraries}"; then
2406 LD_RUN_PATH=$x_libraries${LD_RUN_PATH+:}$LD_RUN_PATH
2410 if test "${opsys}" = "gnu-linux"; then
2411 AC_MSG_CHECKING(whether X on GNU/Linux needs -b to link)
2412 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2413 [[XOpenDisplay ("foo");]])],
2414 [xgnu_linux_first_failure=no],
2415 [xgnu_linux_first_failure=yes])
2416 if test "${xgnu_linux_first_failure}" = "yes"; then
2417 OLD_CPPFLAGS="$CPPFLAGS"
2419 CPPFLAGS="$CPPFLAGS -b i486-linuxaout"
2420 LIBS="$LIBS -b i486-linuxaout"
2421 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2422 [[XOpenDisplay ("foo");]])],
2423 [xgnu_linux_second_failure=no],
2424 [xgnu_linux_second_failure=yes])
2425 if test "${xgnu_linux_second_failure}" = "yes"; then
2426 # If we get the same failure with -b, there is no use adding -b.
2427 # So leave it out. This plays safe.
2430 LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -b i486-linuxaout"
2431 C_SWITCH_X_SITE="$C_SWITCH_X_SITE -b i486-linuxaout"
2434 CPPFLAGS=$OLD_CPPFLAGS
2441 # Reportedly, some broken Solaris systems have XKBlib.h but are missing
2442 # header files included from there.
2443 AC_MSG_CHECKING(for Xkb)
2444 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>
2445 #include <X11/XKBlib.h>]],
2446 [[XkbDescPtr kb = XkbGetKeyboard (0, XkbAllComponentsMask, XkbUseCoreKbd);]])],
2447 emacs_xkb=yes, emacs_xkb=no)
2448 AC_MSG_RESULT($emacs_xkb)
2449 if test $emacs_xkb = yes; then
2450 AC_DEFINE(HAVE_XKB, 1, [Define to 1 if you have the Xkb extension.])
2453 AC_CHECK_FUNCS(XrmSetDatabase XScreenResourceString \
2454 XScreenNumberOfScreen)
2457 if test "${window_system}" = "x11"; then
2458 AC_MSG_CHECKING(X11 version 6)
2459 AC_CACHE_VAL(emacs_cv_x11_version_6,
2460 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]],
2461 [[#if XlibSpecificationRelease < 6
2464 ]])], emacs_cv_x11_version_6=yes, emacs_cv_x11_version_6=no)])
2465 if test $emacs_cv_x11_version_6 = yes; then
2466 AC_MSG_RESULT(6 or newer)
2467 AC_DEFINE(HAVE_X11R6, 1,
2468 [Define to 1 if you have the X11R6 or newer version of Xlib.])
2469 AC_DEFINE(HAVE_X_I18N, 1, [Define if you have usable i18n support.])
2470 ## inoue@ainet.or.jp says Solaris has a bug related to X11R6-style
2474 *) AC_DEFINE(HAVE_X11R6_XIM, 1,
2475 [Define if you have usable X11R6-style XIM support.])
2479 AC_MSG_RESULT(before 6)
2484 ### Use -lrsvg-2 if available, unless '--with-rsvg=no' is specified.
2486 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${opsys}" = "mingw32"; then
2487 if test "${with_rsvg}" != "no"; then
2488 RSVG_REQUIRED=2.11.0
2489 RSVG_MODULE="librsvg-2.0 >= $RSVG_REQUIRED"
2491 EMACS_CHECK_MODULES([RSVG], [$RSVG_MODULE])
2492 AC_SUBST(RSVG_CFLAGS)
2495 if test $HAVE_RSVG = yes; then
2496 AC_DEFINE(HAVE_RSVG, 1, [Define to 1 if using librsvg.])
2497 CFLAGS="$CFLAGS $RSVG_CFLAGS"
2498 # Windows loads librsvg dynamically
2499 if test "${opsys}" = "mingw32"; then
2507 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${HAVE_W32}" = "yes"; then
2508 if test "${with_imagemagick}" != "no"; then
2509 ## 6.3.5 is the earliest version known to work; see Bug#17339.
2510 ## 6.8.2 makes Emacs crash; see Bug#13867.
2511 ## 7 and later have not been ported to; See Bug#25967.
2512 IMAGEMAGICK_MODULE="Wand >= 6.3.5 Wand != 6.8.2 Wand < 7"
2513 EMACS_CHECK_MODULES([IMAGEMAGICK], [$IMAGEMAGICK_MODULE])
2515 if test $HAVE_IMAGEMAGICK = yes; then
2518 CFLAGS="$CFLAGS $IMAGEMAGICK_CFLAGS"
2519 LIBS="$IMAGEMAGICK_LIBS $LIBS"
2520 AC_CHECK_FUNCS([MagickRelinquishMemory MagickExportImagePixels \
2521 MagickMergeImageLayers MagickAutoOrientImage])
2524 # Check that ImageMagick links. It does not link on Fedora 25
2525 # with './configure CC=clang', as pkg-config outputs flags like
2526 # -lomp that work for GCC but not Clang.
2527 if test "$ac_cv_func_MagickRelinquishMemory" != yes; then
2531 if test $HAVE_IMAGEMAGICK = yes; then
2532 AC_DEFINE([HAVE_IMAGEMAGICK], 1, [Define to 1 if using ImageMagick.])
2537 AC_SUBST([IMAGEMAGICK_CFLAGS])
2538 AC_SUBST([IMAGEMAGICK_LIBS])
2542 AC_CHECK_LIB(anl, getaddrinfo_a, HAVE_GETADDRINFO_A=yes)
2543 if test "${HAVE_GETADDRINFO_A}" = "yes"; then
2544 AC_DEFINE(HAVE_GETADDRINFO_A, 1,
2545 [Define to 1 if you have getaddrinfo_a for asynchronous DNS resolution.])
2546 GETADDRINFO_A_LIBS="-lanl"
2547 AC_SUBST(GETADDRINFO_A_LIBS)
2552 gtk_term_header=$term_header
2555 if test "${opsys}" != "mingw32"; then
2556 if test "${with_gtk3}" = "yes" || test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
2559 GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2561 dnl Checks for libraries.
2562 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2563 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2564 if test "$pkg_check_gtk" = "no" && test "$with_gtk3" = "yes"; then
2565 AC_MSG_ERROR($GTK_PKG_ERRORS)
2567 if test "$pkg_check_gtk" = "yes"; then
2568 AC_DEFINE(HAVE_GTK3, 1, [Define to 1 if using GTK 3 or later.])
2569 GTK_OBJ=emacsgtkfixed.o
2570 gtk_term_header=gtkutil.h
2571 USE_GTK_TOOLKIT="GTK3"
2572 if test "x$ac_enable_gtk_deprecation_warnings" = x; then
2573 AC_DEFINE([GDK_DISABLE_DEPRECATION_WARNINGS], [1],
2574 [Define to 1 to disable GTK+/GDK deprecation warnings.])
2575 AC_DEFINE([GLIB_DISABLE_DEPRECATION_WARNINGS], [1],
2576 [Define to 1 to disable Glib deprecation warnings.])
2580 gtk3_pkg_errors="$GTK_PKG_ERRORS "
2584 if test "${with_gtk2}" = "yes" || test "$check_gtk2" = "yes"; then
2587 GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2589 dnl Checks for libraries.
2590 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2591 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2592 if test "$pkg_check_gtk" = "no" &&
2593 { test "$with_gtk" = yes || test "$with_gtk2" = "yes"; }
2595 AC_MSG_ERROR($gtk3_pkg_errors$GTK_PKG_ERRORS)
2597 test "$pkg_check_gtk" = "yes" && USE_GTK_TOOLKIT="GTK2"
2604 if test x"$pkg_check_gtk" = xyes; then
2607 CFLAGS="$CFLAGS $GTK_CFLAGS"
2608 LIBS="$GTK_LIBS $LIBS"
2609 dnl Try to compile a simple GTK program.
2610 AC_MSG_CHECKING([whether GTK compiles])
2614 [[/* Check the Gtk and Glib APIs. */
2615 #include <gtk/gtk.h>
2616 #include <glib-object.h>
2618 callback (GObject *go, GParamSpec *spec, gpointer user_data)
2622 GtkSettings *gs = 0;
2623 /* Use G_CALLBACK to make sure function pointers can be cast to void *;
2624 strict C prohibits this. Use gtk_main_iteration to test that the
2625 libraries are there. */
2626 if (g_signal_handler_find (G_OBJECT (gs), G_SIGNAL_MATCH_FUNC,
2627 0, 0, 0, G_CALLBACK (callback), 0))
2628 gtk_main_iteration ();
2631 AC_MSG_RESULT([$GTK_COMPILES])
2632 if test "${GTK_COMPILES}" != "yes"; then
2634 if test "$USE_X_TOOLKIT" != "maybe"; then
2635 AC_MSG_ERROR([Gtk+ wanted, but it does not compile, see config.log. Maybe some x11-devel files missing?]);
2638 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $GTK_CFLAGS"
2640 AC_DEFINE(USE_GTK, 1, [Define to 1 if using GTK.])
2641 GTK_OBJ="gtkutil.o $GTK_OBJ"
2642 term_header=$gtk_term_header
2644 AC_MSG_WARN([[Your version of Gtk+ will have problems with
2645 closing open displays. This is no problem if you just use
2646 one display, but if you use more than one and close one of them
2648 See http://bugzilla.gnome.org/show_bug.cgi?id=85715]])
2656 if test "${HAVE_GTK}" = "yes"; then
2658 dnl GTK scrollbars resemble toolkit scrollbars a lot, so to avoid
2659 dnl a lot if #ifdef:s, say we have toolkit scrollbars.
2660 if test "$with_toolkit_scroll_bars" != no; then
2661 with_toolkit_scroll_bars=yes
2664 dnl Check if we have the old file selection dialog declared and
2665 dnl in the link library. In 2.x it may be in the library,
2666 dnl but not declared if deprecated featured has been selected out.
2667 dnl AC_CHECK_DECL checks for a macro, so check for GTK_TYPE_FILE_SELECTION.
2668 HAVE_GTK_FILE_SELECTION=no
2669 AC_CHECK_DECL(GTK_TYPE_FILE_SELECTION, HAVE_GTK_FILE_SELECTION=yes,
2670 HAVE_GTK_FILE_SELECTION=no, [AC_INCLUDES_DEFAULT
2671 #include <gtk/gtk.h>])
2672 if test "$HAVE_GTK_FILE_SELECTION" = yes; then
2673 AC_CHECK_FUNCS(gtk_file_selection_new)
2676 dnl Same as above for gtk_handle_box.
2677 HAVE_GTK_HANDLE_BOX=no
2678 AC_CHECK_DECL(GTK_TYPE_HANDLE_BOX, HAVE_GTK_HANDLE_BOX=yes,
2679 HAVE_GTK_HANDLE_BOX=no, [AC_INCLUDES_DEFAULT
2680 #include <gtk/gtk.h>])
2681 if test "$HAVE_GTK_HANDLE_BOX" = yes; then
2682 AC_CHECK_FUNCS(gtk_handle_box_new)
2685 dnl Same as above for gtk_tearoff_menu_item.
2686 HAVE_GTK_TEAROFF_MENU_ITEM=no
2687 AC_CHECK_DECL(GTK_TYPE_TEAROFF_MENU_ITEM, HAVE_GTK_TEAROFF_MENU_ITEM=yes,
2688 HAVE_GTK_TEAROFF_MENU_ITEM=no, [AC_INCLUDES_DEFAULT
2689 #include <gtk/gtk.h>])
2690 if test "$HAVE_GTK_TEAROFF_MENU_ITEM" = yes; then
2691 AC_CHECK_FUNCS(gtk_tearoff_menu_item_new)
2694 dnl Check for functions introduced in 2.14 and later.
2695 AC_CHECK_FUNCS(gtk_widget_get_window gtk_widget_set_has_window \
2696 gtk_dialog_get_action_area gtk_widget_get_sensitive \
2697 gtk_widget_get_mapped gtk_adjustment_get_page_size \
2698 gtk_orientable_set_orientation \
2699 gtk_window_set_has_resize_grip)
2701 term_header=gtkutil.h
2705 dnl Enable xwidgets if GTK3 and WebKitGTK+ are available.
2708 if test "$with_xwidgets" != "no"; then
2709 test "$USE_GTK_TOOLKIT" = "GTK3" && test "$window_system" != "none" ||
2710 AC_MSG_ERROR([xwidgets requested but gtk3 not used.])
2712 WEBKIT_REQUIRED=2.12
2713 WEBKIT_MODULES="webkit2gtk-4.0 >= $WEBKIT_REQUIRED"
2714 EMACS_CHECK_MODULES([WEBKIT], [$WEBKIT_MODULES])
2715 HAVE_XWIDGETS=$HAVE_WEBKIT
2716 test $HAVE_XWIDGETS = yes ||
2717 AC_MSG_ERROR([xwidgets requested but WebKitGTK+ not found.])
2719 XWIDGETS_OBJ=xwidget.o
2720 AC_DEFINE([HAVE_XWIDGETS], 1, [Define to 1 if you have xwidgets support.])
2722 AC_SUBST(XWIDGETS_OBJ)
2727 dnl D-Bus has been tested under GNU/Linux only. Must be adapted for
2728 dnl other platforms.
2731 if test "${with_dbus}" = "yes"; then
2732 EMACS_CHECK_MODULES([DBUS], [dbus-1 >= 1.0])
2733 if test "$HAVE_DBUS" = yes; then
2734 AC_DEFINE(HAVE_DBUS, 1, [Define to 1 if using D-Bus.])
2735 dnl dbus_watch_get_unix_fd has been introduced in D-Bus 1.1.1.
2736 dnl dbus_type_is_valid and dbus_validate_* have been introduced in
2739 LIBS="$LIBS $DBUS_LIBS"
2740 AC_CHECK_FUNCS(dbus_watch_get_unix_fd \
2741 dbus_type_is_valid \
2742 dbus_validate_bus_name \
2743 dbus_validate_path \
2744 dbus_validate_interface \
2745 dbus_validate_member)
2750 AC_SUBST(DBUS_CFLAGS)
2754 dnl GSettings has been tested under GNU/Linux only.
2756 if test "${HAVE_X11}" = "yes" && test "${with_gsettings}" = "yes"; then
2757 EMACS_CHECK_MODULES([GSETTINGS], [gio-2.0 >= 2.26])
2758 if test "$HAVE_GSETTINGS" = "yes"; then
2760 CFLAGS="$CFLAGS $GSETTINGS_CFLAGS"
2762 LIBS="$LIBS $GSETTINGS_LIBS"
2763 AC_MSG_CHECKING([whether GSettings is in gio])
2766 [[/* Check that gsettings really is present. */
2767 #include <glib-object.h>
2768 #include <gio/gio.h>
2771 GSettings *settings;
2772 GVariant *val = g_settings_get_value (settings, "");
2774 [], HAVE_GSETTINGS=no)
2775 AC_MSG_RESULT([$HAVE_GSETTINGS])
2777 if test "$HAVE_GSETTINGS" = "yes"; then
2778 AC_DEFINE(HAVE_GSETTINGS, 1, [Define to 1 if using GSettings.])
2779 SETTINGS_CFLAGS="$GSETTINGS_CFLAGS"
2780 SETTINGS_LIBS="$GSETTINGS_LIBS"
2781 test "$with_gconf" = "yes" || with_gconf=no
2788 dnl GConf has been tested under GNU/Linux only.
2789 dnl The version is really arbitrary, it is about the same age as Gtk+ 2.6.
2791 if test "${HAVE_X11}" = "yes" && test "${with_gconf}" != "no"; then
2792 EMACS_CHECK_MODULES([GCONF], [gconf-2.0 >= 2.13])
2793 if test "$HAVE_GCONF" = yes; then
2794 AC_DEFINE(HAVE_GCONF, 1, [Define to 1 if using GConf.])
2795 dnl Newer GConf doesn't link with g_objects, so this is not defined.
2796 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GCONF_CFLAGS"
2797 SETTINGS_LIBS="$SETTINGS_LIBS $GCONF_LIBS"
2801 if test "$HAVE_GSETTINGS" = "yes" || test "$HAVE_GCONF" = "yes"; then
2802 EMACS_CHECK_MODULES([GOBJECT], [gobject-2.0 >= 2.0])
2803 if test "$HAVE_GOBJECT" = "yes"; then
2804 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GOBJECT_CFLAGS"
2805 SETTINGS_LIBS="$SETTINGS_LIBS $GOBJECT_LIBS"
2807 SAVE_CFLAGS="$CFLAGS"
2809 CFLAGS="$SETTINGS_CFLAGS $CFLAGS"
2810 LIBS="$SETTINGS_LIBS $LIBS"
2811 CFLAGS="$SAVE_CFLAGS"
2814 AC_SUBST(SETTINGS_CFLAGS)
2815 AC_SUBST(SETTINGS_LIBS)
2818 dnl SELinux is available for GNU/Linux only.
2821 if test "${with_selinux}" = "yes"; then
2822 AC_CHECK_LIB([selinux], [lgetfilecon], HAVE_LIBSELINUX=yes, HAVE_LIBSELINUX=no)
2823 if test "$HAVE_LIBSELINUX" = yes; then
2824 AC_DEFINE(HAVE_LIBSELINUX, 1, [Define to 1 if using SELinux.])
2825 LIBSELINUX_LIBS=-lselinux
2828 AC_SUBST(LIBSELINUX_LIBS)
2831 if test "${with_gnutls}" = "yes" ; then
2832 EMACS_CHECK_MODULES([LIBGNUTLS], [gnutls >= 2.12.2],
2833 [HAVE_GNUTLS=yes], [HAVE_GNUTLS=no])
2834 if test "${HAVE_GNUTLS}" = "yes"; then
2835 AC_DEFINE(HAVE_GNUTLS, 1, [Define if using GnuTLS.])
2836 EMACS_CHECK_MODULES([LIBGNUTLS3], [gnutls >= 3.0.0],
2837 [AC_DEFINE(HAVE_GNUTLS3, 1, [Define if using GnuTLS v3.])], [])
2839 AC_CACHE_CHECK([for GnuTLS v3 with HMAC], [emacs_cv_gnutls3_hmac],
2842 #include <gnutls/gnutls.h>
2843 #include <gnutls/crypto.h>
2848 gnutls_hmac_hd_t handle;
2849 gnutls_hmac_deinit (handle, NULL);
2852 [emacs_cv_gnutls3_hmac=yes],
2853 [emacs_cv_gnutls3_hmac=no])])
2854 if test "$emacs_cv_gnutls3_hmac" = yes; then
2855 AC_DEFINE([HAVE_GNUTLS3_HMAC], [1],
2856 [Define if using GnuTLS v3 with HMAC support.])
2859 AC_CACHE_CHECK([for GnuTLS v3 with AEAD], [emacs_cv_gnutls3_aead],
2862 #include <gnutls/gnutls.h>
2863 #include <gnutls/crypto.h>
2868 gnutls_aead_cipher_hd_t handle;
2869 gnutls_aead_cipher_deinit (handle);
2872 [emacs_cv_gnutls3_aead=yes],
2873 [emacs_cv_gnutls3_aead=no])])
2874 if test "$emacs_cv_gnutls3_aead" = yes; then
2875 AC_DEFINE([HAVE_GNUTLS3_AEAD], [1],
2876 [Define if using GnuTLS v3 with AEAD support.])
2879 AC_CACHE_CHECK([for GnuTLS v3 with cipher], [emacs_cv_gnutls3_cipher],
2882 #include <gnutls/gnutls.h>
2883 #include <gnutls/crypto.h>
2888 gnutls_cipher_hd_t handle;
2889 gnutls_cipher_encrypt2 (handle, NULL, 0, NULL, 0);
2890 gnutls_cipher_deinit (handle);
2893 [emacs_cv_gnutls3_cipher=yes],
2894 [emacs_cv_gnutls3_cipher=no])])
2895 if test "$emacs_cv_gnutls3_cipher" = yes; then
2896 AC_DEFINE([HAVE_GNUTLS3_CIPHER], [1],
2897 [Define if using GnuTLS v3 with cipher support.])
2900 AC_CACHE_CHECK([for GnuTLS v3 with digest], [emacs_cv_gnutls3_digest],
2903 #include <gnutls/gnutls.h>
2904 #include <gnutls/crypto.h>
2909 gnutls_hash_hd_t handle;
2910 gnutls_hash_deinit (handle, NULL);
2913 [emacs_cv_gnutls3_digest=yes],
2914 [emacs_cv_gnutls3_digest=no])])
2915 if test "$emacs_cv_gnutls3_digest" = yes; then
2916 AC_DEFINE([HAVE_GNUTLS3_DIGEST], [1],
2917 [Define if using GnuTLS v3 with digest support.])
2921 # Windows loads GnuTLS dynamically
2922 if test "${opsys}" = "mingw32"; then
2927 AC_SUBST(LIBGNUTLS_LIBS)
2928 AC_SUBST(LIBGNUTLS_CFLAGS)
2931 if test "${with_libsystemd}" = "yes" ; then
2932 dnl This code has been tested with libsystemd 222 and later.
2933 dnl FIXME: Find the earliest version number for which Emacs should work,
2934 dnl and change '222' to that number.
2935 EMACS_CHECK_MODULES([LIBSYSTEMD], [libsystemd >= 222],
2936 [HAVE_LIBSYSTEMD=yes], [HAVE_LIBSYSTEMD=no])
2937 if test "${HAVE_LIBSYSTEMD}" = "yes"; then
2938 AC_DEFINE(HAVE_LIBSYSTEMD, 1, [Define if using libsystemd.])
2942 AC_SUBST(LIBSYSTEMD_LIBS)
2943 AC_SUBST(LIBSYSTEMD_CFLAGS)
2948 dnl MS Windows native file monitor is available for mingw32 only.
2949 case $with_file_notification,$opsys in
2951 AC_MSG_ERROR(['--with-file-notification=w32' was specified, but
2952 this is only supported on MS-Windows native and MinGW32 builds.
2953 Consider using gfile instead.])
2955 w32,* | yes,mingw32)
2956 AC_CHECK_HEADER(windows.h)
2957 if test "$ac_cv_header_windows_h" = yes ; then
2958 AC_DEFINE(HAVE_W32NOTIFY, 1, [Define to 1 to use w32notify.])
2959 NOTIFY_OBJ=w32notify.o
2960 NOTIFY_SUMMARY="yes (w32)"
2964 dnl inotify is available only on GNU/Linux.
2965 case $with_file_notification,$NOTIFY_OBJ in
2967 AC_CHECK_HEADER(sys/inotify.h)
2968 if test "$ac_cv_header_sys_inotify_h" = yes ; then
2969 AC_CHECK_FUNC(inotify_init1)
2970 if test "$ac_cv_func_inotify_init1" = yes; then
2971 AC_DEFINE(HAVE_INOTIFY, 1, [Define to 1 to use inotify.])
2972 NOTIFY_OBJ=inotify.o
2973 NOTIFY_SUMMARY="yes -lglibc (inotify)"
2978 dnl kqueue is available on BSD-like systems.
2979 case $with_file_notification,$NOTIFY_OBJ in
2981 EMACS_CHECK_MODULES([KQUEUE], [libkqueue])
2982 if test "$HAVE_KQUEUE" = "yes"; then
2983 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2984 CPPFLAGS="$CPPFLAGS -I/usr/include/kqueue"
2985 NOTIFY_CFLAGS=$KQUEUE_CFLAGS
2986 NOTIFY_LIBS=$KQUEUE_LIBS
2988 NOTIFY_SUMMARY="yes -lkqueue"
2990 AC_SEARCH_LIBS(kqueue, [])
2991 if test "$ac_cv_search_kqueue" != no; then
2992 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2994 NOTIFY_SUMMARY="yes (kqueue)"
2999 dnl g_file_monitor exists since glib 2.18. G_FILE_MONITOR_EVENT_MOVED
3000 dnl has been added in glib 2.24. It has been tested under
3002 case $with_file_notification,$NOTIFY_OBJ in
3004 if test "${HAVE_NS}" = yes; then
3005 AC_MSG_ERROR(['--with-file-notification=gfile' is not supported in NextStep builds.
3006 Consider kqueue instead.])
3008 EMACS_CHECK_MODULES([GFILENOTIFY], [gio-2.0 >= 2.24])
3009 if test "$HAVE_GFILENOTIFY" = "yes"; then
3010 AC_DEFINE(HAVE_GFILENOTIFY, 1, [Define to 1 if using GFile.])
3011 NOTIFY_CFLAGS=$GFILENOTIFY_CFLAGS
3012 NOTIFY_LIBS=$GFILENOTIFY_LIBS
3013 NOTIFY_OBJ=gfilenotify.o
3014 NOTIFY_SUMMARY="yes -lgio (gfile)"
3019 case $with_file_notification,$NOTIFY_OBJ in
3020 yes,* | no,* | *,?*) ;;
3021 *) AC_MSG_ERROR([File notification '$with_file_notification' requested but requirements not found.]) ;;
3024 if test -n "$NOTIFY_OBJ"; then
3025 AC_DEFINE(USE_FILE_NOTIFY, 1, [Define to 1 if using file notifications.])
3027 AC_SUBST(NOTIFY_CFLAGS)
3028 AC_SUBST(NOTIFY_LIBS)
3029 AC_SUBST(NOTIFY_OBJ)
3031 dnl Do not put whitespace before the #include statements below.
3032 dnl Older compilers (eg sunos4 cc) choke on it.
3035 if test x"${USE_X_TOOLKIT}" = xmaybe || test x"${USE_X_TOOLKIT}" = xLUCID; then
3036 if test "$with_xaw3d" != no; then
3037 AC_CACHE_VAL(emacs_cv_xaw3d,
3038 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
3039 #include <X11/Intrinsic.h>
3040 #include <X11/Xaw3d/Simple.h>]],
3042 [AC_CHECK_LIB(Xaw3d, XawScrollbarSetThumb,
3043 emacs_cv_xaw3d=yes, emacs_cv_xaw3d=no)],
3044 emacs_cv_xaw3d=no)])
3048 if test $emacs_cv_xaw3d = yes; then
3049 AC_MSG_CHECKING(for xaw3d)
3050 AC_MSG_RESULT([yes; using Lucid toolkit])
3054 AC_DEFINE(HAVE_XAW3D, 1,
3055 [Define to 1 if you have the Xaw3d library (-lXaw3d).])
3057 AC_MSG_CHECKING(for xaw3d)
3059 AC_MSG_CHECKING(for libXaw)
3060 AC_CACHE_VAL(emacs_cv_xaw,
3061 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
3062 #include <X11/Intrinsic.h>
3063 #include <X11/Xaw/Simple.h>]],
3067 if test $emacs_cv_xaw = yes; then
3068 AC_MSG_RESULT([yes; using Lucid toolkit])
3071 elif test x"${USE_X_TOOLKIT}" = xLUCID; then
3072 AC_MSG_ERROR([Lucid toolkit requires X11/Xaw include files])
3074 AC_MSG_ERROR([No X toolkit could be found.
3075 If you are sure you want Emacs compiled without an X toolkit, pass
3077 to configure. Otherwise, install the development libraries for the toolkit
3078 that you want to use (e.g. Gtk+) and re-run configure.])
3083 X_TOOLKIT_TYPE=$USE_X_TOOLKIT
3087 if test "${USE_X_TOOLKIT}" != "none"; then
3088 AC_MSG_CHECKING(X11 toolkit version)
3089 AC_CACHE_VAL(emacs_cv_x11_toolkit_version_6,
3090 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Intrinsic.h>]],
3091 [[#if XtSpecificationRelease < 6
3094 ]])], emacs_cv_x11_toolkit_version_6=yes, emacs_cv_x11_toolkit_version_6=no)])
3095 HAVE_X11XTR6=$emacs_cv_x11_toolkit_version_6
3096 if test $emacs_cv_x11_toolkit_version_6 = yes; then
3097 AC_MSG_RESULT(6 or newer)
3098 AC_DEFINE(HAVE_X11XTR6, 1,
3099 [Define to 1 if you have the X11R6 or newer version of Xt.])
3100 LIBXTR6="-lSM -lICE"
3102 ## Use libw.a along with X11R6 Xt.
3103 unixware) LIBXTR6="$LIBXTR6 -lw" ;;
3106 AC_MSG_RESULT(before 6)
3109 dnl If using toolkit, check whether libXmu.a exists.
3110 dnl tranle@intellicorp.com says libXmu.a can need XtMalloc in libXt.a to link.
3112 if test x$HAVE_X11XTR6 = xyes; then
3113 OTHERLIBS='-lXt -lSM -lICE'
3117 AC_SEARCH_LIBS([XmuConvertStandardSelection], [Xmu], [], [], [$OTHERLIBS])
3118 if test "X$LIBS" != "X$OLDLIBS"; then
3119 LIBXMU=$ac_cv_search_XmuConvertStandardSelection
3122 dnl ac_cv_search_XmuConvertStandardSelection is also referenced below.
3128 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3129 # OpenMotif may be installed in such a way on some GNU/Linux systems.
3130 if test -d /usr/include/openmotif; then
3131 CPPFLAGS="-I/usr/include/openmotif $CPPFLAGS"
3132 emacs_cv_openmotif=yes
3133 case "$canonical" in
3134 x86_64-*-linux-gnu* | powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*)
3135 test -d /usr/lib64/openmotif && LDFLAGS="-L/usr/lib64/openmotif $LDFLAGS"
3138 test -d /usr/lib/openmotif && LDFLAGS="-L/usr/lib/openmotif $LDFLAGS"
3141 emacs_cv_openmotif=no
3143 AC_CACHE_CHECK(for (Open)Motif version 2.1, emacs_cv_motif_version_2_1,
3144 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <Xm/Xm.h>]],
3145 [[#if XmVERSION > 2 || (XmVERSION == 2 && XmREVISION >= 1)
3148 Motif version prior to 2.1.
3150 emacs_cv_motif_version_2_1=yes, emacs_cv_motif_version_2_1=no)])
3151 if test $emacs_cv_motif_version_2_1 = yes; then
3152 AC_CHECK_LIB(Xp, XpCreateContext, LIBXP=-lXp)
3153 if test x$emacs_cv_openmotif = xyes; then
3154 REAL_CPPFLAGS="-I/usr/include/openmotif $REAL_CPPFLAGS"
3157 AC_CACHE_CHECK(for LessTif where some systems put it, emacs_cv_lesstif,
3158 # We put this in CFLAGS temporarily to precede other -I options
3159 # that might be in CFLAGS temporarily.
3160 # We put this in CPPFLAGS where it precedes the other -I options.
3161 OLD_CPPFLAGS=$CPPFLAGS
3163 CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CPPFLAGS"
3164 CFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CFLAGS"
3165 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include </usr/X11R6/LessTif/Motif1.2/include/Xm/Xm.h>]],
3167 emacs_cv_lesstif=yes, emacs_cv_lesstif=no)])
3168 if test $emacs_cv_lesstif = yes; then
3169 # Make sure this -I option remains in CPPFLAGS after it is set
3170 # back to REAL_CPPFLAGS.
3171 # There is no need to change REAL_CFLAGS, because REAL_CFLAGS does not
3172 # have those other -I options anyway. Ultimately, having this
3173 # directory ultimately in CPPFLAGS will be enough.
3174 REAL_CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $REAL_CPPFLAGS"
3175 LDFLAGS="-L/usr/X11R6/LessTif/Motif1.2/lib $LDFLAGS"
3178 CPPFLAGS=$OLD_CPPFLAGS
3181 AC_CHECK_HEADER([Xm/BulletinB.h], [],
3182 [AC_MSG_ERROR([Motif toolkit requested but requirements not found.])])
3185 dnl Use toolkit scroll bars if configured for GTK or X toolkit and either
3186 dnl using Motif or Xaw3d is available, and unless
3187 dnl --with-toolkit-scroll-bars=no was specified.
3189 AH_TEMPLATE(USE_TOOLKIT_SCROLL_BARS,
3190 [Define to 1 if we should use toolkit scroll bars.])dnl
3191 USE_TOOLKIT_SCROLL_BARS=no
3192 if test "${with_toolkit_scroll_bars}" != "no"; then
3193 if test "${USE_X_TOOLKIT}" != "none"; then
3194 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3195 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3197 USE_TOOLKIT_SCROLL_BARS=yes
3198 elif test "${HAVE_XAW3D}" = "yes" || test "${USE_X_TOOLKIT}" = "LUCID"; then
3199 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3200 USE_TOOLKIT_SCROLL_BARS=yes
3202 elif test "${HAVE_GTK}" = "yes"; then
3203 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3204 USE_TOOLKIT_SCROLL_BARS=yes
3205 elif test "${HAVE_NS}" = "yes"; then
3206 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3207 USE_TOOLKIT_SCROLL_BARS=yes
3208 elif test "${HAVE_W32}" = "yes"; then
3209 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3210 USE_TOOLKIT_SCROLL_BARS=yes
3214 dnl See if XIM is available.
3215 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3216 #include <X11/Xlib.h>
3217 #include <X11/Xresource.h>]],
3218 [[XIMProc callback;]])],
3220 AC_DEFINE(HAVE_XIM, 1, [Define to 1 if XIM is available])],
3223 dnl '--with-xim' now controls only the initial value of use_xim at run time.
3225 if test "${with_xim}" != "no"; then
3226 AC_DEFINE(USE_XIM, 1,
3227 [Define to 1 if we should use XIM, if it is available.])
3231 if test "${HAVE_XIM}" != "no"; then
3233 if test "$GCC" = yes; then
3234 CFLAGS="$CFLAGS --pedantic-errors"
3236 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3237 #include <X11/Xlib.h>
3238 #include <X11/Xresource.h>]],
3244 XPointer *client_data;
3246 /* If we're not using GCC, it's probably not XFree86, and this is
3247 probably right, but we can't use something like --pedantic-errors. */
3248 extern Bool XRegisterIMInstantiateCallback(Display*, XrmDatabase, char*,
3249 char*, XIMProc, XPointer*);
3251 (void)XRegisterIMInstantiateCallback(display, db, res_name, res_class, callback,
3253 [emacs_cv_arg6_star=yes])
3254 AH_TEMPLATE(XRegisterIMInstantiateCallback_arg6,
3255 [Define to the type of the 6th arg of XRegisterIMInstantiateCallback,
3256 either XPointer or XPointer*.])dnl
3257 if test "$emacs_cv_arg6_star" = yes; then
3258 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer*])
3260 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer])
3265 ### Start of font-backend (under any platform) section.
3266 # (nothing here yet -- this is a placeholder)
3267 ### End of font-backend (under any platform) section.
3269 ### Start of font-backend (under X11) section.
3270 if test "${HAVE_X11}" = "yes"; then
3271 ## Use -lXft if available, unless '--with-xft=no'.
3273 if test "x${with_x}" = "xno"; then
3277 if test "$with_xft" != no; then
3278 EMACS_CHECK_MODULES([FONTCONFIG], [fontconfig >= 2.2.0])
3279 with_xft=$HAVE_FONTCONFIG
3282 if test "x${with_xft}" != "xno"; then
3284 EMACS_CHECK_MODULES([XFT], [xft >= 0.13.0], [], [HAVE_XFT=no])
3285 ## Because xftfont.c uses XRenderQueryExtension, we also
3286 ## need to link to -lXrender.
3288 AC_CHECK_LIB(Xrender, XRenderQueryExtension, HAVE_XRENDER=yes)
3289 if test "$HAVE_XFT" != no && test "$HAVE_XRENDER" != no; then
3290 OLD_CPPFLAGS="$CPPFLAGS"
3291 OLD_CFLAGS="$CFLAGS"
3293 CPPFLAGS="$CPPFLAGS $XFT_CFLAGS"
3294 CFLAGS="$CFLAGS $XFT_CFLAGS"
3295 XFT_LIBS="-lXrender $XFT_LIBS"
3296 LIBS="$XFT_LIBS $LIBS"
3297 AC_CHECK_HEADER(X11/Xft/Xft.h,
3298 AC_CHECK_LIB(Xft, XftFontOpen, HAVE_XFT=yes, , $XFT_LIBS) , ,
3299 [[#include <X11/X.h>]])
3301 if test "${HAVE_XFT}" = "yes"; then
3302 AC_DEFINE(HAVE_XFT, 1, [Define to 1 if you have the Xft library.])
3304 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $XFT_CFLAGS"
3305 fi # "${HAVE_XFT}" = "yes"
3306 CPPFLAGS=$OLD_CPPFLAGS
3309 fi # "$HAVE_XFT" != no
3310 fi # "x${with_xft}" != "xno"
3312 ## We used to allow building with FreeType and without Xft.
3313 ## However, the ftx font backend driver is not in good shape.
3314 if test "$HAVE_XFT" != "yes"; then
3315 dnl For the "Does Emacs use" message at the end.
3319 dnl Strict linkers fail with
3320 dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
3321 dnl if -lfreetype is not specified.
3322 dnl The following is needed to set FREETYPE_LIBS.
3323 EMACS_CHECK_MODULES([FREETYPE], [freetype2])
3325 test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(libxft requires libfreetype)
3329 if test "${HAVE_FREETYPE}" = "yes"; then
3330 AC_DEFINE(HAVE_FREETYPE, 1,
3331 [Define to 1 if using the freetype and fontconfig libraries.])
3332 if test "${with_libotf}" != "no"; then
3333 EMACS_CHECK_MODULES([LIBOTF], [libotf])
3334 if test "$HAVE_LIBOTF" = "yes"; then
3335 AC_DEFINE(HAVE_LIBOTF, 1, [Define to 1 if using libotf.])
3336 AC_CHECK_LIB(otf, OTF_get_variation_glyphs,
3337 HAVE_OTF_GET_VARIATION_GLYPHS=yes,
3338 HAVE_OTF_GET_VARIATION_GLYPHS=no)
3339 if test "${HAVE_OTF_GET_VARIATION_GLYPHS}" = "yes"; then
3340 AC_DEFINE(HAVE_OTF_GET_VARIATION_GLYPHS, 1,
3341 [Define to 1 if libotf has OTF_get_variation_glyphs.])
3345 dnl FIXME should there be an error if HAVE_FREETYPE != yes?
3346 dnl Does the new font backend require it, or can it work without it?
3350 if test "${HAVE_LIBOTF}" = yes; then
3351 if test "${with_m17n_flt}" != "no"; then
3352 EMACS_CHECK_MODULES([M17N_FLT], [m17n-flt])
3353 if test "$HAVE_M17N_FLT" = "yes"; then
3354 AC_DEFINE(HAVE_M17N_FLT, 1, [Define to 1 if using libm17n-flt.])
3365 ### End of font-backend (under X11) section.
3367 AC_SUBST(FREETYPE_CFLAGS)
3368 AC_SUBST(FREETYPE_LIBS)
3369 AC_SUBST(FONTCONFIG_CFLAGS)
3370 AC_SUBST(FONTCONFIG_LIBS)
3371 AC_SUBST(LIBOTF_CFLAGS)
3372 AC_SUBST(LIBOTF_LIBS)
3373 AC_SUBST(M17N_FLT_CFLAGS)
3374 AC_SUBST(M17N_FLT_LIBS)
3377 if test "${HAVE_X11}" = "yes"; then
3378 if test "${with_cairo}" != "no"; then
3379 CAIRO_REQUIRED=1.12.0
3380 CAIRO_MODULE="cairo >= $CAIRO_REQUIRED"
3381 EMACS_CHECK_MODULES(CAIRO, $CAIRO_MODULE)
3382 if test $HAVE_CAIRO = yes; then
3383 AC_DEFINE(USE_CAIRO, 1, [Define to 1 if using cairo.])
3385 AC_MSG_ERROR([cairo requested but not found.])
3388 CFLAGS="$CFLAGS $CAIRO_CFLAGS"
3389 LIBS="$LIBS $CAIRO_LIBS"
3390 AC_SUBST(CAIRO_CFLAGS)
3391 AC_SUBST(CAIRO_LIBS)
3395 if test "${HAVE_X11}" = "yes"; then
3396 AC_CHECK_HEADER(X11/Xlib-xcb.h,
3397 AC_CHECK_LIB(xcb, xcb_translate_coordinates, HAVE_XCB=yes))
3398 if test "${HAVE_XCB}" = "yes"; then
3399 AC_CHECK_LIB(X11-xcb, XGetXCBConnection, HAVE_X11_XCB=yes)
3400 if test "${HAVE_X11_XCB}" = "yes"; then
3401 AC_DEFINE(USE_XCB, 1,
3402 [Define to 1 if you have the XCB library and X11-XCB library for mixed
3403 X11/XCB programming.])
3404 XCB_LIBS="-lX11-xcb -lxcb"
3410 ### Use -lXpm if available, unless '--with-xpm=no'.
3411 ### mingw32 doesn't use -lXpm, since it loads the library dynamically.
3412 ### The Cygwin-w32 build uses <noX/xpm.h> instead of <X11/xpm.h>, so
3413 ### we need to set LDFLAGS accordingly.
3416 if test "${HAVE_W32}" = "yes" && test "${opsys}" = "cygwin"; then
3417 if test "${with_xpm}" != "no"; then
3418 SAVE_LDFLAGS="$LDFLAGS"
3419 LDFLAGS="$LDFLAGS -L/usr/lib/noX"
3420 AC_CHECK_HEADER(noX/xpm.h,
3421 [AC_CHECK_LIB(Xpm, XpmReadFileToImage, HAVE_XPM=yes)])
3422 if test "${HAVE_XPM}" = "yes"; then
3423 AC_MSG_CHECKING(for XpmReturnAllocPixels preprocessor define)
3424 AC_EGREP_CPP(no_return_alloc_pixels,
3425 [#include "noX/xpm.h"
3426 #ifndef XpmReturnAllocPixels
3427 no_return_alloc_pixels
3429 ], HAVE_XPM=no, HAVE_XPM=yes)
3431 if test "${HAVE_XPM}" = "yes"; then
3435 LDFLAGS="$SAVE_LDFLAGS"
3440 if test "${HAVE_XPM}" = "yes"; then
3441 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3446 if test "${HAVE_X11}" = "yes"; then
3447 dnl Avoid Xpm on AIX unless requested, as it crashes; see Bug#17598.
3448 test "$opsys$with_xpm_set" = aix4-2 && with_xpm=no
3450 if test "${with_xpm}" != "no"; then
3451 AC_CHECK_HEADER(X11/xpm.h,
3452 [AC_CHECK_LIB(Xpm, XpmReadFileToPixmap, HAVE_XPM=yes, , -lX11)])
3453 if test "${HAVE_XPM}" = "yes"; then
3454 AC_MSG_CHECKING(for XpmReturnAllocPixels preprocessor define)
3455 AC_EGREP_CPP(no_return_alloc_pixels,
3456 [#include "X11/xpm.h"
3457 #ifndef XpmReturnAllocPixels
3458 no_return_alloc_pixels
3460 ], HAVE_XPM=no, HAVE_XPM=yes)
3462 if test "${HAVE_XPM}" = "yes"; then
3470 if test "${HAVE_XPM}" = "yes"; then
3471 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3473 elif test "$opsys,$LUCID_LIBW" = aix4-2,-lXaw; then
3474 dnl AIX -lXaw needs -lXpm linked too; see Bug#17598 Message#152.
3479 ### FIXME: Perhaps regroup to minimize code duplication due to MinGW's
3480 ### slightly different requirements wrt image libraries (it doesn't
3481 ### use -lXpm because it loads the xpm shared library dynamically at
3483 if test "${opsys}" = "mingw32"; then
3484 if test "${with_xpm}" != "no"; then
3485 AC_CHECK_HEADER(X11/xpm.h, HAVE_XPM=yes, HAVE_XPM=no, [
3489 if test "${HAVE_XPM}" = "yes"; then
3490 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3496 ### Use -ljpeg if available, unless '--with-jpeg=no'.
3499 if test "${with_jpeg}" != "no"; then
3500 AC_CACHE_CHECK([for jpeglib 6b or later],
3503 for emacs_cv_jpeglib in yes -ljpeg no; do
3504 case $emacs_cv_jpeglib in
3507 *) LIBS="$LIBS $emacs_cv_jpeglib";;
3511 [[#undef HAVE_STDLIB_H /* Avoid config.h/jpeglib.h collision. */
3512 #include <stdio.h> /* jpeglib.h needs FILE and size_t. */
3513 #include <jpeglib.h>
3515 char verify[JPEG_LIB_VERSION < 62 ? -1 : 1];
3516 struct jpeg_decompress_struct cinfo;
3519 jpeg_create_decompress (&cinfo);
3520 WARNMS (&cinfo, JWRN_JPEG_EOF);
3521 jpeg_destroy_decompress (&cinfo);
3523 [emacs_link_ok=yes],
3526 test $emacs_link_ok = yes && break
3528 if test "$emacs_cv_jpeglib" != no; then
3530 AC_DEFINE([HAVE_JPEG], 1,
3531 [Define to 1 if you have the jpeg library (typically -ljpeg).])
3532 ### mingw32 doesn't use -ljpeg, since it loads the library
3533 ### dynamically when needed, and doesn't want a run-time
3534 ### dependency on the jpeglib DLL.
3535 test "$emacs_cv_jpeglib" != yes && test "${opsys}" != "mingw32" \
3536 && LIBJPEG=$emacs_cv_jpeglib
3543 if test "${with_zlib}" != "no"; then
3545 AC_SEARCH_LIBS([inflateEnd], [z], [HAVE_ZLIB=yes])
3547 case $ac_cv_search_inflateEnd in
3548 -*) LIBZ=$ac_cv_search_inflateEnd ;;
3551 if test "${HAVE_ZLIB}" = "yes"; then
3552 AC_DEFINE([HAVE_ZLIB], 1, [Define to 1 if you have the zlib library (-lz).])
3553 ### mingw32 doesn't use -lz, since it loads the library dynamically.
3554 if test "${opsys}" = "mingw32"; then
3560 ### Dynamic modules support
3565 cygwin|mingw32) MODULES_SUFFIX=".dll" ;;
3566 *) MODULES_SUFFIX=".so" ;;
3568 if test "${with_modules}" != "no"; then
3574 cygwin|mingw32|darwin)
3578 # BSD systems have dlopen in libc.
3579 AC_CHECK_FUNC([dlopen], [HAVE_MODULES=yes])
3583 if test "${HAVE_MODULES}" = no; then
3584 AC_MSG_ERROR([Dynamic modules are not supported on your system])
3587 LIBS="$LIBS $LIBMODULES"
3588 AC_CHECK_FUNCS([dladdr dlfunc])
3593 if test "${HAVE_MODULES}" = yes; then
3594 MODULES_OBJ="dynlib.o emacs-module.o"
3595 AC_DEFINE(HAVE_MODULES, 1, [Define to 1 if dynamic modules are enabled])
3596 AC_DEFINE_UNQUOTED(MODULES_SUFFIX, "$MODULES_SUFFIX",
3597 [System extension for dynamic libraries])
3599 AC_SUBST(MODULES_OBJ)
3600 AC_SUBST(LIBMODULES)
3601 AC_SUBST(HAVE_MODULES)
3602 AC_SUBST(MODULES_SUFFIX)
3604 AC_CONFIG_FILES([src/emacs-module.h])
3605 AC_SUBST_FILE([module_env_snippet_25])
3606 AC_SUBST_FILE([module_env_snippet_26])
3607 module_env_snippet_25="$srcdir/src/module-env-25.h"
3608 module_env_snippet_26="$srcdir/src/module-env-26.h"
3610 ### Use -lpng if available, unless '--with-png=no'.
3614 if test "${NS_IMPL_COCOA}" = yes; then
3616 elif test "${with_png}" != no; then
3617 # mingw32 loads the library dynamically.
3618 if test "$opsys" = mingw32; then
3619 AC_CHECK_HEADER([png.h], [HAVE_PNG=yes])
3620 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3621 AC_MSG_CHECKING([for png])
3622 png_cflags=`(libpng-config --cflags) 2>&AS_MESSAGE_LOG_FD` &&
3623 png_ldflags=`(libpng-config --ldflags) 2>&AS_MESSAGE_LOG_FD` || {
3624 # libpng-config does not work; configure by hand.
3625 # Debian unstable as of July 2003 has multiple libpngs, and puts png.h
3626 # in /usr/include/libpng.
3627 if test -r /usr/include/libpng/png.h &&
3628 test ! -r /usr/include/png.h; then
3629 png_cflags=-I/usr/include/libpng
3637 CFLAGS="$CFLAGS $png_cflags"
3638 LIBS="$png_ldflags -lz -lm $LIBS"
3640 [AC_LANG_PROGRAM([[#include <png.h>]],
3641 [[return !png_get_channels (0, 0);]])],
3643 PNG_CFLAGS=`AS_ECHO(["$png_cflags"]) | sed -e "$edit_cflags"`
3645 # $LIBPNG requires explicit -lz in some cases.
3646 # We don't know what those cases are, exactly, so play it safe and
3647 # append -lz to any nonempty $LIBPNG, unless we're already using LIBZ.
3648 if test -n "$LIBPNG" && test -z "$LIBZ"; then
3649 LIBPNG="$LIBPNG -lz"
3653 AC_MSG_RESULT([$HAVE_PNG])
3656 if test $HAVE_PNG = yes; then
3657 AC_DEFINE([HAVE_PNG], [1], [Define to 1 if you have the png library.])
3660 CFLAGS="$CFLAGS $PNG_CFLAGS"
3661 AC_CHECK_DECL([png_longjmp],
3663 [AC_DEFINE([PNG_DEPSTRUCT], [],
3664 [Define to empty to suppress deprecation warnings when building
3665 with --enable-gcc-warnings and with libpng versions before 1.5,
3666 which lack png_longjmp.])],
3672 AC_SUBST(PNG_CFLAGS)
3674 ### Use -ltiff if available, unless '--with-tiff=no'.
3675 ### mingw32 doesn't use -ltiff, since it loads the library dynamically.
3678 if test "${opsys}" = "mingw32"; then
3679 if test "${with_tiff}" != "no"; then
3680 AC_CHECK_HEADER(tiffio.h, HAVE_TIFF=yes, HAVE_TIFF=no)
3682 if test "${HAVE_TIFF}" = "yes"; then
3683 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3685 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3686 if test "${with_tiff}" != "no"; then
3687 AC_CHECK_HEADER(tiffio.h,
3689 # At least one tiff package requires the jpeg library.
3690 if test "${HAVE_JPEG}" = yes; then tifflibs="-ljpeg $tifflibs"; fi
3691 AC_CHECK_LIB(tiff, TIFFGetVersion, HAVE_TIFF=yes, , $tifflibs)])
3694 if test "${HAVE_TIFF}" = "yes"; then
3695 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3696 dnl FIXME -lz -lm, as per libpng?
3702 ### Use -lgif or -lungif if available, unless '--with-gif=no'.
3703 ### mingw32 doesn't use -lgif/-lungif, since it loads the library dynamically.
3706 if test "${opsys}" = "mingw32"; then
3707 if test "${with_gif}" != "no"; then
3708 AC_CHECK_HEADER(gif_lib.h, HAVE_GIF=yes, HAVE_GIF=no)
3710 if test "${HAVE_GIF}" = "yes"; then
3711 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3713 elif test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no" \
3714 || test "${HAVE_W32}" = "yes"; then
3715 AC_CHECK_HEADER(gif_lib.h,
3716 # EGifPutExtensionLast only exists from version libungif-4.1.0b1.
3717 # Earlier versions can crash Emacs, but version 5.0 removes EGifPutExtensionLast.
3718 [AC_CHECK_LIB(gif, GifMakeMapObject, HAVE_GIF=yes,
3719 [AC_CHECK_LIB(gif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=maybe)])])
3721 if test "$HAVE_GIF" = yes; then
3723 elif test "$HAVE_GIF" = maybe; then
3724 # If gif_lib.h but no libgif, try libungif.
3725 AC_CHECK_LIB(ungif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=no)
3726 test "$HAVE_GIF" = yes && LIBGIF=-lungif
3729 if test "${HAVE_GIF}" = "yes"; then
3730 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3735 dnl Check for required libraries.
3738 if test "${HAVE_X11}" = "yes"; then
3739 test "${with_xpm}" != "no" && test "${HAVE_XPM}" != "yes" &&
3740 MISSING="libXpm" && WITH_NO="--with-xpm=no"
3741 test "${with_jpeg}" != "no" && test "${HAVE_JPEG}" != "yes" &&
3742 MISSING="$MISSING libjpeg" && WITH_NO="$WITH_NO --with-jpeg=no"
3743 test "${with_png}" != "no" && test "${HAVE_PNG}" != "yes" &&
3744 MISSING="$MISSING libpng" && WITH_NO="$WITH_NO --with-png=no"
3745 test "${with_gif}" != "no" && test "${HAVE_GIF}" != "yes" &&
3746 MISSING="$MISSING libgif/libungif" && WITH_NO="$WITH_NO --with-gif=no"
3747 test "${with_tiff}" != "no" && test "${HAVE_TIFF}" != "yes" &&
3748 MISSING="$MISSING libtiff" && WITH_NO="$WITH_NO --with-tiff=no"
3750 test "${with_gnutls}" != "no" && test "${HAVE_GNUTLS}" != "yes" &&
3751 MISSING="$MISSING gnutls" && WITH_NO="$WITH_NO --with-gnutls=no"
3752 if test "X${MISSING}" != X; then
3753 AC_MSG_ERROR([The following required libraries were not found:
3755 Maybe some development libraries/packages are missing?
3756 If you don't want to link with them give
3758 as options to configure])
3761 ### Use -lgpm if available, unless '--with-gpm=no'.
3764 if test "${with_gpm}" != "no"; then
3765 AC_CHECK_HEADER(gpm.h,
3766 [AC_CHECK_LIB(gpm, Gpm_Open, HAVE_GPM=yes)])
3768 if test "${HAVE_GPM}" = "yes"; then
3769 AC_DEFINE(HAVE_GPM, 1, [Define to 1 if you have the gpm library (-lgpm).])
3775 dnl Check for malloc/malloc.h on darwin
3776 AC_CHECK_HEADERS_ONCE(malloc/malloc.h)
3779 ### Use NeXTstep API to implement GUI.
3780 if test "${HAVE_NS}" = "yes"; then
3781 AC_DEFINE(HAVE_NS, 1, [Define to 1 if you are using the NeXTstep API, either GNUstep or Cocoa on macOS.])
3782 if test "${NS_IMPL_COCOA}" = "yes"; then
3783 AC_DEFINE(NS_IMPL_COCOA, 1, [Define to 1 if you are using NS windowing under macOS.])
3785 if test "${NS_IMPL_GNUSTEP}" = "yes"; then
3786 AC_DEFINE(NS_IMPL_GNUSTEP, 1, [Define to 1 if you are using NS windowing under GNUstep.])
3787 if test $NS_GNUSTEP_CONFIG != yes; then
3788 # See also .m.o rule in src/Makefile.in. */
3789 # FIXME: are all these flags really needed? Document here why. */
3790 GNUSTEP_CFLAGS="-D_REENTRANT -fPIC -fno-strict-aliasing -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
3791 ## Extra CFLAGS applied to src/*.m files.
3792 GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -fgnu-runtime -Wno-import -fconstant-string-class=NSConstantString -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGSWARN -DGSDIAGNOSE"
3798 ### Use session management (-lSM -lICE) if available
3801 if test "${HAVE_X11}" = "yes"; then
3802 AC_CHECK_HEADER(X11/SM/SMlib.h,
3803 [AC_CHECK_LIB(SM, SmcOpenConnection, HAVE_X_SM=yes, , -lICE)])
3805 if test "${HAVE_X_SM}" = "yes"; then
3806 AC_DEFINE(HAVE_X_SM, 1, [Define to 1 if you have the SM library (-lSM).])
3812 ### Use XRandr (-lXrandr) if available
3814 if test "${HAVE_X11}" = "yes"; then
3815 XRANDR_REQUIRED=1.2.2
3816 XRANDR_MODULES="xrandr >= $XRANDR_REQUIRED"
3817 EMACS_CHECK_MODULES([XRANDR], [$XRANDR_MODULES])
3818 if test $HAVE_XRANDR = no; then
3819 # Test old way in case pkg-config doesn't have it (older machines).
3820 # Include Xrender.h by hand to work around bug in older Xrandr.h
3821 # (e.g. RHEL5) and silence (harmless) configure warning (bug#18465).
3822 AC_CHECK_HEADER(X11/extensions/Xrandr.h,
3823 [AC_CHECK_LIB(Xrandr, XRRGetScreenResources, HAVE_XRANDR=yes)],
3824 [], [AC_INCLUDES_DEFAULT
3825 #include <X11/extensions/Xrender.h>])
3826 if test $HAVE_XRANDR = yes; then
3827 XRANDR_LIBS=-lXrandr
3830 if test $HAVE_XRANDR = yes; then
3831 AC_DEFINE(HAVE_XRANDR, 1, [Define to 1 if you have the XRandr extension.])
3834 AC_SUBST(XRANDR_CFLAGS)
3835 AC_SUBST(XRANDR_LIBS)
3837 ### Use Xinerama (-lXinerama) if available
3839 if test "${HAVE_X11}" = "yes"; then
3840 XINERAMA_REQUIRED=1.0.2
3841 XINERAMA_MODULES="xinerama >= $XINERAMA_REQUIRED"
3842 EMACS_CHECK_MODULES([XINERAMA], [$XINERAMA_MODULES])
3843 if test $HAVE_XINERAMA = no; then
3844 # Test old way in case pkg-config doesn't have it (older machines).
3845 AC_CHECK_HEADER(X11/extensions/Xinerama.h,
3846 [AC_CHECK_LIB(Xinerama, XineramaQueryExtension, HAVE_XINERAMA=yes)])
3847 if test $HAVE_XINERAMA = yes; then
3848 XINERAMA_LIBS=-lXinerama
3851 if test $HAVE_XINERAMA = yes; then
3852 AC_DEFINE(HAVE_XINERAMA, 1, [Define to 1 if you have the Xinerama extension.])
3855 AC_SUBST(XINERAMA_CFLAGS)
3856 AC_SUBST(XINERAMA_LIBS)
3858 ### Use Xfixes (-lXfixes) if available
3860 if test "${HAVE_X11}" = "yes"; then
3861 XFIXES_REQUIRED=4.0.0
3862 XFIXES_MODULES="xfixes >= $XFIXES_REQUIRED"
3863 EMACS_CHECK_MODULES([XFIXES], [$XFIXES_MODULES])
3864 if test $HAVE_XFIXES = no; then
3865 # Test old way in case pkg-config doesn't have it (older machines).
3866 AC_CHECK_HEADER(X11/extensions/Xfixes.h,
3867 [AC_CHECK_LIB(Xfixes, XFixesHideCursor, HAVE_XFIXES=yes)])
3868 if test $HAVE_XFIXES = yes; then
3869 XFIXES_LIBS=-lXfixes
3872 if test $HAVE_XFIXES = yes; then
3873 AC_DEFINE(HAVE_XFIXES, 1, [Define to 1 if you have the Xfixes extension.])
3876 AC_SUBST(XFIXES_CFLAGS)
3877 AC_SUBST(XFIXES_LIBS)
3879 ### Use Xdbe (-lXdbe) if available
3881 if test "${HAVE_X11}" = "yes"; then
3882 AC_CHECK_HEADER(X11/extensions/Xdbe.h,
3883 [AC_CHECK_LIB(Xext, XdbeAllocateBackBufferName, HAVE_XDBE=yes)],
3885 [#include <X11/Xlib.h>
3887 if test $HAVE_XDBE = yes; then
3890 if test $HAVE_XDBE = yes; then
3891 AC_DEFINE(HAVE_XDBE, 1, [Define to 1 if you have the Xdbe extension.])
3894 AC_SUBST(XDBE_CFLAGS)
3897 ### Use libxml (-lxml2) if available
3898 ### mingw32 doesn't use -lxml2, since it loads the library dynamically.
3900 if test "${with_xml2}" != "no"; then
3901 ### I'm not sure what the version number should be, so I just guessed.
3902 EMACS_CHECK_MODULES([LIBXML2], [libxml-2.0 > 2.6.17])
3903 # Built-in libxml2 on OS X 10.8 lacks libxml-2.0.pc.
3904 if test "${HAVE_LIBXML2}" != "yes" && test "$opsys" = "darwin"; then
3905 SAVE_CPPFLAGS="$CPPFLAGS"
3906 if test -z "$xcsdkdir" -a -n "$XCRUN" -a ! -d /usr/include; then
3907 dnl /usr/include is not found. Try Xcode SDK dir if it is sane.
3908 xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
3910 *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
3914 CPPFLAGS="$CPPFLAGS -I$xcsdkdir/usr/include/libxml2"
3915 AC_CHECK_HEADER(libxml/HTMLparser.h,
3916 [AC_CHECK_DECL(HTML_PARSE_RECOVER, HAVE_LIBXML2=yes, ,
3917 [#include <libxml/HTMLparser.h>])])
3918 CPPFLAGS="$SAVE_CPPFLAGS"
3919 if test "${HAVE_LIBXML2}" = "yes"; then
3920 LIBXML2_CFLAGS="-I'$xcsdkdir/usr/include/libxml2'"
3921 LIBXML2_LIBS="-lxml2"
3924 if test "${HAVE_LIBXML2}" = "yes"; then
3925 if test "${opsys}" != "mingw32"; then
3926 AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no,
3931 if test "${HAVE_LIBXML2}" = "yes"; then
3932 AC_DEFINE(HAVE_LIBXML2, 1, [Define to 1 if you have the libxml library (-lxml2).])
3939 AC_SUBST(LIBXML2_LIBS)
3940 AC_SUBST(LIBXML2_CFLAGS)
3944 if test ! "$with_mailutils"; then
3945 # Check for mail-locking functions in a "mail" library. Probably this should
3946 # have the same check as for liblockfile below.
3947 AC_CHECK_LIB([mail], [maillock], [have_mail=yes], [have_mail=no])
3948 if test $have_mail = yes; then
3950 AC_DEFINE([HAVE_LIBMAIL], [1],
3951 [Define to 1 if you have the 'mail' library (-lmail).])
3954 LIBS="$LIBS_MAIL $LIBS"
3955 AC_CHECK_FUNCS([touchlock])
3958 dnl Debian, at least:
3959 AC_CHECK_LIB([lockfile], [maillock], [have_lockfile=yes], [have_lockfile=no])
3960 if test $have_lockfile = yes; then
3961 LIBS_MAIL=-llockfile
3962 AC_DEFINE([HAVE_LIBLOCKFILE], [1],
3963 [Define to 1 if you have the 'lockfile' library (-llockfile).])
3965 # If we have the shared liblockfile, assume we must use it for mail
3966 # locking (e.g. Debian). If we couldn't link against liblockfile
3967 # (no liblockfile.a installed), ensure that we don't need to.
3968 dnl This works for files generally, not just executables.
3969 dnl Should we look elsewhere for it? Maybe examine /etc/ld.so.conf?
3970 AC_CHECK_PROG([liblockfile], [liblockfile.so], [yes], [no],
3971 [/usr/lib:/lib:/usr/local/lib:$LD_LIBRARY_PATH])
3972 if test "$ac_cv_prog_liblockfile" = yes; then
3973 AC_MSG_ERROR([Shared liblockfile found but can't link against it.
3974 This probably means that movemail could lose mail.
3975 There may be a 'development' package to install containing liblockfile.])
3978 AC_CHECK_HEADERS([maillock.h])
3980 ## Define MAIL_USE_FLOCK (or LOCKF) if the mailer uses flock (or lockf) to
3981 ## interlock access to the mail spool. The alternative is a lock file named
3982 ## /usr/spool/mail/$USER.lock.
3985 aix4-2) mail_lock="lockf" ;;
3987 gnu|freebsd|dragonfly|netbsd|openbsd|darwin) mail_lock="flock" ;;
3989 ## On GNU/Linux systems, both methods are used by various mail programs.
3990 ## I assume most people are using newer mailers that have heard of flock.
3991 ## Change this if you need to.
3992 ## Debian contains a patch which says: "On Debian/GNU/Linux systems,
3993 ## configure gets the right answers, and that means *NOT* using flock.
3994 ## Using flock is guaranteed to be the wrong thing. See Debian Policy
3995 ## for details." and then uses '#ifdef DEBIAN'. Unfortunately the
3996 ## Debian maintainer hasn't provided a clean fix for Emacs.
3997 ## movemail.c will use 'maillock' when MAILDIR, HAVE_LIBMAIL and
3998 ## HAVE_MAILLOCK_H are defined, so the following appears to be the
3999 ## correct logic. -- fx
4000 ## We must check for HAVE_LIBLOCKFILE too, as movemail does.
4001 ## liblockfile is a Free Software replacement for libmail, used on
4002 ## Debian systems and elsewhere. -rfr.
4005 if test $have_mail = yes || test $have_lockfile = yes; then
4006 test $ac_cv_header_maillock_h = yes && mail_lock=no
4010 mail_lock="none-needed" ;;
4014 flock) AC_DEFINE([MAIL_USE_FLOCK], [1],
4015 [Define if the mailer uses flock to interlock the mail spool.]);;
4017 lockf) AC_DEFINE([MAIL_USE_LOCKF], [1],
4018 [Define if the mailer uses lockf to interlock the mail spool.]);;
4022 *) BLESSMAIL_TARGET="need-blessmail" ;;
4025 AC_SUBST([BLESSMAIL_TARGET])
4026 AC_SUBST([LIBS_MAIL])
4029 LIBS="$LIB_PTHREAD $LIB_MATH $LIBS"
4030 AC_CHECK_FUNCS(accept4 fchdir gethostname \
4031 getrusage get_current_dir_name \
4032 lrand48 random rint trunc \
4033 select getpagesize setlocale newlocale \
4034 getrlimit setrlimit shutdown \
4035 pthread_sigmask strsignal setitimer \
4036 sendto recvfrom getsockname getifaddrs freeifaddrs \
4038 getpwent endpwent getgrent endgrent \
4039 cfmakeraw cfsetspeed __executable_start log2 prctl)
4042 dnl No need to check for posix_memalign if aligned_alloc works.
4043 AC_CHECK_FUNCS([aligned_alloc posix_memalign], [break])
4044 AC_CHECK_DECLS([aligned_alloc], [], [], [[#include <stdlib.h>]])
4046 dnl Cannot use AC_CHECK_FUNCS
4047 AC_CACHE_CHECK([for __builtin_unwind_init],
4048 emacs_cv_func___builtin_unwind_init,
4049 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_unwind_init ();])],
4050 emacs_cv_func___builtin_unwind_init=yes,
4051 emacs_cv_func___builtin_unwind_init=no)])
4052 if test $emacs_cv_func___builtin_unwind_init = yes; then
4053 AC_DEFINE(HAVE___BUILTIN_UNWIND_INIT, 1,
4054 [Define to 1 if you have the '__builtin_unwind_init' function.])
4057 AC_CHECK_HEADERS_ONCE(sys/un.h)
4062 AC_CHECK_FUNCS(grantpt)
4064 # PTY-related GNU extensions.
4065 AC_CHECK_FUNCS(getpt posix_openpt)
4067 # Check this now, so that we will NOT find the above functions in ncurses.
4068 # That is because we have not set up to link ncurses in lib-src.
4069 # It's better to believe a function is not available
4070 # than to expect to find it in ncurses.
4071 # Also we need tputs and friends to be able to build at all.
4072 AC_MSG_CHECKING([for library containing tputs])
4073 # Run a test program that contains a call to tputs, a call that is
4074 # never executed. This tests whether a pre-'main' dynamic linker
4075 # works with the library. It's too much trouble to actually call
4076 # tputs in the test program, due to portability hassles. When
4077 # cross-compiling, assume the test program will run if it links.
4078 AC_DEFUN([tputs_link_source], [
4080 [[extern void tputs (const char *, int, int (*)(int));
4081 int main (int argc, char **argv)
4084 tputs (argv[0], 0, 0);
4088 if test "${opsys}" = "mingw32"; then
4091 # Maybe curses should be tried earlier?
4092 # See http://debbugs.gnu.org/cgi/bugreport.cgi?bug=9736#35
4093 for tputs_library in '' tinfo ncurses terminfo termcap curses; do
4095 if test -z "$tputs_library"; then
4099 LIBS_TERMCAP=-l$tputs_library
4101 LIBS="$LIBS_TERMCAP $LIBS"
4103 AC_RUN_IFELSE([tputs_link_source], [], [msg=no],
4104 [AC_LINK_IFELSE([tputs_link_source], [], [msg=no])])
4106 if test "X$msg" != Xno; then
4111 AC_MSG_RESULT([$msg])
4112 if test "X$msg" = Xno; then
4113 AC_MSG_ERROR([The required function 'tputs' was not found in any library.
4114 The following libraries were tried (in order):
4115 libtinfo, libncurses, libterminfo, libtermcap, libcurses
4116 Please try installing whichever of these libraries is most appropriate
4117 for your system, together with its header files.
4118 For example, a libncurses-dev(el) or similar package.])
4121 ## Use termcap instead of terminfo?
4122 ## Only true for: freebsd < 40000, ms-w32, msdos, netbsd < 599002500.
4124 ## FIXME? In the cases below where we unconditionally set
4125 ## LIBS_TERMCAP="-lncurses", this overrides LIBS_TERMCAP = -ltinfo,
4126 ## if that was found above to have tputs.
4127 ## Should we use the gnu* logic everywhere?
4129 ## darwin: Prevents crashes when running Emacs in Terminal.app under 10.2.
4130 ## The ncurses library has been moved out of the System framework in
4131 ## Mac OS X 10.2. So if configure detects it, set the command-line
4132 ## option to use it.
4133 darwin) LIBS_TERMCAP="-lncurses" ;;
4135 gnu*) test -z "$LIBS_TERMCAP" && LIBS_TERMCAP="-lncurses" ;;
4138 AC_MSG_CHECKING([whether FreeBSD is new enough to use terminfo])
4139 AC_CACHE_VAL(emacs_cv_freebsd_terminfo,
4140 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <osreldate.h>]],
4141 [[#if __FreeBSD_version < 400000
4144 ]])], emacs_cv_freebsd_terminfo=yes, emacs_cv_freebsd_terminfo=no)])
4146 AC_MSG_RESULT($emacs_cv_freebsd_terminfo)
4148 if test $emacs_cv_freebsd_terminfo = yes; then
4149 LIBS_TERMCAP="-lncurses"
4152 LIBS_TERMCAP="-ltermcap"
4162 if test "x$LIBS_TERMCAP" != "x-lterminfo"; then
4164 LIBS_TERMCAP="-ltermcap"
4168 openbsd | dragonfly) LIBS_TERMCAP="-lncurses" ;;
4170 ## hpux: Make sure we get select from libc rather than from libcurses
4171 ## because libcurses on HPUX 10.10 has a broken version of select.
4172 ## We used to use -lc -lcurses, but this may be cleaner.
4173 ## FIXME? But TERMINFO = yes on hpux (it used to be explicitly
4174 # set that way, now it uses the default). Isn't this a contradiction?
4175 hpux*) LIBS_TERMCAP="-ltermcap" ;;
4179 TERMCAP_OBJ=tparam.o
4180 if test $TERMINFO = yes; then
4181 AC_DEFINE(TERMINFO, 1, [Define to 1 if you use terminfo instead of termcap.])
4182 TERMCAP_OBJ=terminfo.o
4184 if test "X$LIBS_TERMCAP" = "X-lncurses"; then
4185 AC_DEFINE(USE_NCURSES, 1, [Define to 1 if you use ncurses.])
4187 AC_SUBST(LIBS_TERMCAP)
4188 AC_SUBST(TERMCAP_OBJ)
4190 # GNU/Linux-specific timer functions.
4191 AC_CACHE_CHECK([for timerfd interface], [emacs_cv_have_timerfd],
4193 [AC_LANG_PROGRAM([[#include <sys/timerfd.h>
4195 [[timerfd_create (CLOCK_REALTIME,
4196 TFD_CLOEXEC | TFD_NONBLOCK);
4197 timerfd_settime (0, TFD_TIMER_ABSTIME, 0, 0);]])],
4198 [emacs_cv_have_timerfd=yes],
4199 [emacs_cv_have_timerfd=no])])
4200 if test "$emacs_cv_have_timerfd" = yes; then
4201 AC_DEFINE([HAVE_TIMERFD], 1,
4202 [Define to 1 if timerfd functions are supported as in GNU/Linux.])
4205 # Alternate stack for signal handlers.
4206 AC_CACHE_CHECK([whether signals can be handled on alternate stack],
4207 [emacs_cv_alternate_stack],
4209 [AC_LANG_PROGRAM([[#include <signal.h>
4212 struct sigaction sa;
4213 ss.ss_sp = malloc (SIGSTKSZ);
4214 ss.ss_size = SIGSTKSZ;
4215 sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
4216 sigaltstack (&ss, 0);
4217 sigaction (SIGSEGV, &sa, 0);]])],
4218 [emacs_cv_alternate_stack=yes],
4219 [emacs_cv_alternate_stack=no])])
4221 # Do we need the Hesiod library to provide the support routines?
4222 dnl FIXME? Should we be skipping this on Darwin too?
4225 if test "$with_hesiod" != no ; then
4226 # Don't set $LIBS here -- see comments above. FIXME which comments?
4228 AC_CHECK_FUNC(res_send, , [AC_CHECK_FUNC(__res_send, ,
4229 [AC_CHECK_LIB(resolv, res_send, resolv=yes,
4230 [AC_CHECK_LIB(resolv, __res_send, resolv=yes)])])])
4231 if test "$resolv" = yes ; then
4237 AC_CHECK_FUNC(hes_getmailhost, , [AC_CHECK_LIB(hesiod, hes_getmailhost,
4238 hesiod=yes, :, $RESOLVLIB)])
4240 if test x"$hesiod" = xyes; then
4242 LIBRESOLV=$RESOLVLIB
4248 # These tell us which Kerberos-related libraries to use.
4255 if test "${with_kerberos}" != no; then
4257 AC_CHECK_LIB(com_err, com_err, have_com_err=yes, have_com_err=no)
4258 if test $have_com_err = yes; then
4259 COM_ERRLIB=-lcom_err
4260 LIBS="$COM_ERRLIB $LIBS"
4262 AC_CHECK_LIB(crypto, mit_des_cbc_encrypt, have_crypto=yes, have_crypto=no)
4263 if test $have_crypto = yes; then
4265 LIBS="$CRYPTOLIB $LIBS"
4267 AC_CHECK_LIB(k5crypto, mit_des_cbc_encrypt, have_k5crypto=yes, have_k5crypto=no)
4268 if test $have_k5crypto = yes; then
4269 CRYPTOLIB=-lk5crypto
4270 LIBS="$CRYPTOLIB $LIBS"
4272 AC_CHECK_LIB(krb5, krb5_init_context, have_krb5=yes, have_krb5=no)
4273 if test $have_krb5=yes; then
4275 LIBS="$KRB5LIB $LIBS"
4277 dnl FIXME Simplify. Does not match 22 logic, thanks to default_off?
4278 if test "${with_kerberos5}" = no; then
4279 AC_CHECK_LIB(des425, des_cbc_encrypt, have_des425=yes, have_des425=no )
4280 if test $have_des425 = yes; then
4282 LIBS="$DESLIB $LIBS"
4284 AC_CHECK_LIB(des, des_cbc_encrypt, have_des=yes, have_des=no)
4285 if test $have_des = yes; then
4287 LIBS="$DESLIB $LIBS"
4290 AC_CHECK_LIB(krb4, krb_get_cred, have_krb4=yes, have_krb4=no)
4291 if test $have_krb4 = yes; then
4293 LIBS="$KRB4LIB $LIBS"
4295 AC_CHECK_LIB(krb, krb_get_cred, have_krb=yes, have_krb=no)
4296 if test $have_krb = yes; then
4298 LIBS="$KRB4LIB $LIBS"
4303 if test "${with_kerberos5}" != no; then
4304 AC_CHECK_HEADERS(krb5.h,
4305 [AC_CHECK_MEMBERS([krb5_error.text, krb5_error.e_text],,,
4306 [#include <krb5.h>])])
4308 AC_CHECK_HEADERS(krb.h,,
4309 [AC_CHECK_HEADERS(kerberosIV/krb.h,,
4310 [AC_CHECK_HEADERS(kerberos/krb.h)])])
4312 AC_CHECK_HEADERS(com_err.h)
4316 AC_SUBST(COM_ERRLIB)
4322 AC_CHECK_HEADERS(valgrind/valgrind.h)
4324 AC_CHECK_MEMBERS([struct unipair.unicode], [], [], [[#include <linux/kd.h>]])
4326 AC_CHECK_FUNCS_ONCE([sbrk])
4329 AC_CHECK_FUNC(socket, , ok_so_far=no)
4330 if test $ok_so_far = yes; then
4331 AC_CHECK_HEADER(netinet/in.h, , ok_so_far=no)
4333 if test $ok_so_far = yes; then
4334 AC_CHECK_HEADER(arpa/inet.h, , ok_so_far=no)
4336 if test $ok_so_far = yes; then
4337 dnl Fixme: Not used. Should this be HAVE_SOCKETS?
4338 AC_DEFINE(HAVE_INET_SOCKETS, 1,
4339 [Define to 1 if you have inet sockets.])
4344 AC_CHECK_FUNCS(snprintf)
4346 dnl Check for glib. This differs from other library checks in that
4347 dnl Emacs need not link to glib unless some other library is already
4348 dnl linking to glib. Although glib provides no facilities that Emacs
4349 dnl needs for its own purposes, when glib is present Emacs needs to
4350 dnl use primitives like g_main_context_query to avoid clashing with
4351 dnl glib at a low level.
4353 dnl Check this late, since it depends on $GTK_CFLAGS etc.
4357 CFLAGS="$CFLAGS $GTK_CFLAGS $RSVG_CFLAGS $DBUS_CFLAGS $SETTINGS_CFLAGS"
4358 LIBS="$LIBS $GTK_LIBS $RSVG_LIBS $DBUS_LIBS $SETTINGS_LIBS"
4359 CFLAGS="$CFLAGS $NOTIFY_CFLAGS $CAIRO_CFLAGS"
4360 LIBS="$LIBS $NOTIFY_LIBS $CAIRO_LIBS"
4361 AC_MSG_CHECKING([whether GLib is linked in])
4362 AC_LINK_IFELSE([AC_LANG_PROGRAM(
4365 [[g_print ("Hello world");]])],
4368 AC_MSG_RESULT([$links_glib])
4369 if test "${links_glib}" = "yes"; then
4370 AC_DEFINE(HAVE_GLIB, 1, [Define to 1 if GLib is linked in.])
4371 if test "$HAVE_NS" = no;then
4379 dnl Adapted from Haible's version.
4380 AC_CACHE_CHECK([for nl_langinfo and CODESET], emacs_cv_langinfo_codeset,
4381 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
4382 [[char* cs = nl_langinfo(CODESET);]])],
4383 emacs_cv_langinfo_codeset=yes,
4384 emacs_cv_langinfo_codeset=no)
4386 if test $emacs_cv_langinfo_codeset = yes; then
4387 AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
4388 [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
4393 dnl Fixme: AC_SYS_POSIX_TERMIOS should probably be used, but it's not clear
4394 dnl how the tty code is related to POSIX and/or other versions of termios.
4395 dnl The following looks like a useful start.
4397 dnl AC_SYS_POSIX_TERMIOS
4398 dnl if test $ac_cv_sys_posix_termios = yes; then
4399 dnl AC_DEFINE(HAVE_TERMIOS, 1, [Define to 1 if you have POSIX-style functions
4400 dnl and macros for terminal control.])
4401 dnl AC_DEFINE(HAVE_TCATTR, 1, [Define to 1 if you have tcgetattr and tcsetattr.])
4404 dnl Turned on June 1996 supposing nobody will mind it.
4405 dnl MinGW emulates passwd database, so this feature doesn't make sense there.
4406 if test "${opsys}" != "mingw32"; then
4407 AC_DEFINE(AMPERSAND_FULL_NAME, 1, [Define to use the convention that &
4408 in the full name stands for the login id.])
4411 dnl Everybody supports this, except MS.
4412 dnl Seems like the kind of thing we should be testing for, though.
4413 ## Note: PTYs are broken on darwin <6. Use at your own risk.
4414 if test "${opsys}" != "mingw32"; then
4415 AC_DEFINE(HAVE_PTYS, 1, [Define if the system supports pty devices.])
4418 dnl Everybody supports this, except MS-DOS.
4419 dnl Seems like the kind of thing we should be testing for, though.
4420 dnl Compare with HAVE_INET_SOCKETS (which is unused...) above.
4421 AC_DEFINE(HAVE_SOCKETS, 1, [Define if the system supports
4422 4.2-compatible sockets.])
4424 AH_TEMPLATE(INTERNAL_TERMINAL, [This is substituted when $TERM is "internal".])
4426 AH_TEMPLATE(NULL_DEVICE, [Name of the file to open to get
4427 a null file, or a data sink.])
4428 if test "${opsys}" = "mingw32"; then
4429 AC_DEFINE(NULL_DEVICE, ["NUL:"])
4431 AC_DEFINE(NULL_DEVICE, ["/dev/null"])
4434 if test "${opsys}" = "mingw32"; then
4439 AC_DEFINE_UNQUOTED(SEPCHAR, ['$SEPCHAR'], [Character that separates PATH elements.])
4440 dnl This is for MinGW, and is used in test/Makefile.in.
4441 dnl The MSYS Bash has heuristics for replacing ':' with ';' when it
4442 dnl decides that a command-line argument to be passed to a MinGW program
4443 dnl is a PATH-style list of directories. But that heuristics plays it
4444 dnl safe, and only does the replacement when it is _absolutely_ sure it
4445 dnl sees a colon-separated list of file names; e.g. ":." is left alone,
4446 dnl which breaks in-tree builds. So we do this manually instead.
4447 dnl Note that we cannot rely on PATH_SEPARATOR, as that one will always
4448 dnl be computed as ':' in MSYS Bash.
4451 dnl Everybody supports this, except MS-DOS.
4452 AC_DEFINE(subprocesses, 1, [Define to enable asynchronous subprocesses.])
4454 AC_DEFINE(USER_FULL_NAME, [pw->pw_gecos], [How to get a user's full name.])
4457 AC_DEFINE(DIRECTORY_SEP, ['/'],
4458 [Character that separates directories in a file name.])
4460 if test "${opsys}" = "mingw32"; then
4461 AC_DEFINE(IS_DEVICE_SEP(_c_), [((_c_) == ':')],
4462 [Returns true if character is a device separator.])
4464 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == '/' || (_c_) == '\\')],
4465 [Returns true if character is a directory separator.])
4467 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP(_c_))],
4468 [Returns true if character is any form of separator.])
4470 AC_DEFINE(IS_DEVICE_SEP(_c_), 0,
4471 [Returns true if character is a device separator.])
4473 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == DIRECTORY_SEP)],
4474 [Returns true if character is a directory separator.])
4476 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_))],
4477 [Returns true if character is any form of separator.])
4480 if test "$USE_X_TOOLKIT" != "none"; then
4484 dnl Assar Westerlund <assar@sics.se> says this is necessary
4485 dnl for HP-UX 10.20, and that it works for HP-UX 0 as well.
4489 if test "$have_editres" != no && test ! -z "$LIBXMU"; then
4491 dnl See libXmu.a check above.
4492 if test x$HAVE_X11XTR6 = xyes; then
4493 LIBS="-lXt -lSM -lICE $LIBXMU"
4495 OTHERLIBS="-lXt -$LIBXMU"
4498 [#include <X11/Intrinsic.h>
4499 #include <X11/Xmu/Editres.h>],
4500 [_XEditResCheckMessages (0, 0, 0, 0);],
4501 [AC_DEFINE([X_TOOLKIT_EDITRES], 1,
4502 [Define to 1 if we should use XEditRes.])])
4509 dnl Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
4510 dnl instead, there's a system variable _sys_nsig. Unfortunately, we
4511 dnl need the constant to dimension an array. So wire in the appropriate
4513 AC_DEFINE(NSIG_MINIMUM, 32, [Minimum value of NSIG.])
4517 emacs_broken_SIGIO=no
4520 dnl SIGIO exists, but the feature doesn't work in the way Emacs needs.
4521 dnl See eg <http://article.gmane.org/gmane.os.openbsd.ports/46831>.
4522 hpux* | nacl | openbsd | sol2* | unixware )
4523 emacs_broken_SIGIO=yes
4527 dnl On AIX Emacs uses the gmalloc.c malloc implementation. But given
4528 dnl the way this system works, libc functions that return malloced
4529 dnl memory use the libc malloc implementation. Calling xfree or
4530 dnl xrealloc on the results of such functions results in a crash.
4532 dnl One solution for this could be to define SYSTEM_MALLOC in configure,
4533 dnl but that does not currently work on this system.
4535 dnl It is possible to completely override the malloc implementation on
4536 dnl AIX, but that involves putting the malloc functions in a shared
4537 dnl library and setting the MALLOCTYPE environment variable to point to
4538 dnl that shared library.
4540 dnl Emacs currently calls xrealloc on the results of get_current_dir name,
4541 dnl to avoid a crash just use the Emacs implementation for that function.
4543 dnl FIXME We could change the AC_CHECK_FUNCS call near the start
4544 dnl of this file, so that we do not check for get_current_dir_name
4545 dnl on AIX. But that might be fragile if something else ends
4546 dnl up testing for get_current_dir_name as a dependency.
4547 AC_DEFINE(BROKEN_GET_CURRENT_DIR_NAME, 1, [Define if
4548 get_current_dir_name should not be used.])
4552 dnl Circumvent a bug in FreeBSD. In the following sequence of
4553 dnl writes/reads on a PTY, read(2) returns bogus data:
4555 dnl write(2) 1022 bytes
4556 dnl write(2) 954 bytes, get EAGAIN
4557 dnl read(2) 1024 bytes in process_read_output
4558 dnl read(2) 11 bytes in process_read_output
4560 dnl That is, read(2) returns more bytes than have ever been written
4561 dnl successfully. The 1033 bytes read are the 1022 bytes written
4562 dnl successfully after processing (for example with CRs added if the
4563 dnl terminal is set up that way which it is here). The same bytes will
4564 dnl be seen again in a later read(2), without the CRs.
4565 AC_DEFINE(BROKEN_PTY_READ_AFTER_EAGAIN, 1, [Define on FreeBSD to
4566 work around an issue when reading from a PTY.])
4572 dnl FIXME Can't we test if this exists (eg /proc/$$)?
4573 AC_DEFINE(HAVE_PROCFS, 1, [Define if you have the /proc filesystem.])
4578 darwin | dragonfly | freebsd | netbsd | openbsd )
4579 AC_DEFINE(DONT_REOPEN_PTY, 1, [Define if process.c does not need to
4580 close a pty to make it a controlling terminal (it is already a
4581 controlling terminal of the subprocess, because we did ioctl TIOCSCTTY).])
4585 dnl FIXME Surely we can test for this rather than hard-code it.
4587 netbsd | openbsd) sound_device="/dev/audio" ;;
4588 *) sound_device="/dev/dsp" ;;
4592 AC_DEFINE_UNQUOTED(DEFAULT_SOUND_DEVICE, "$sound_device",
4593 [Name of the default sound device.])
4596 dnl Emacs can read input using SIGIO and buffering characters itself,
4597 dnl or using CBREAK mode and making C-g cause SIGINT.
4598 dnl The choice is controlled by the variable interrupt_input.
4600 dnl Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
4602 dnl Emacs uses the presence of the USABLE_SIGIO macro
4603 dnl to indicate whether or not signal-driven I/O is possible. It uses
4604 dnl INTERRUPT_INPUT to decide whether to use it by default.
4606 dnl SIGIO can be used only on systems that implement it (4.2 and 4.3).
4607 dnl CBREAK mode has two disadvantages
4608 dnl 1) At least in 4.2, it is impossible to handle the Meta key properly.
4609 dnl I hear that in system V this problem does not exist.
4610 dnl 2) Control-G causes output to be discarded.
4611 dnl I do not know whether this can be fixed in system V.
4613 dnl Another method of doing input is planned but not implemented.
4614 dnl It would have Emacs fork off a separate process
4615 dnl to read the input and send it to the true Emacs process
4618 darwin | gnu-linux | gnu-kfreebsd )
4619 AC_DEFINE(INTERRUPT_INPUT, 1, [Define to read input using SIGIO.])
4624 dnl If the system's imake configuration file defines 'NeedWidePrototypes'
4625 dnl as 'NO', we must define NARROWPROTO manually. Such a define is
4626 dnl generated in the Makefile generated by 'xmkmf'. If we don't define
4627 dnl NARROWPROTO, we will see the wrong function prototypes for X functions
4628 dnl taking float or double parameters.
4630 cygwin|gnu|gnu-linux|gnu-kfreebsd|freebsd|netbsd|openbsd)
4631 AC_DEFINE(NARROWPROTO, 1, [Define if system's imake configuration
4632 file defines 'NeedWidePrototypes' as 'NO'.])
4637 dnl Used in process.c, this must be a loop, even if it only runs once.
4638 AH_TEMPLATE(PTY_ITERATION, [How to iterate over PTYs.])
4639 dnl Only used if !PTY_ITERATION. Iterate from FIRST_PTY_LETTER to z,
4640 dnl trying suffixes 0-16.
4641 AH_TEMPLATE(FIRST_PTY_LETTER, [Letter to use in finding device name of
4642 first PTY, if PTYs are supported.])
4643 AH_TEMPLATE(PTY_OPEN, [How to open a PTY, if non-standard.])
4644 AH_TEMPLATE(PTY_NAME_SPRINTF, [How to get the device name of the control
4645 end of a PTY, if non-standard.])
4646 AH_TEMPLATE(PTY_TTY_NAME_SPRINTF, [How to get device name of the tty
4647 end of a PTY, if non-standard.])
4651 AC_DEFINE(PTY_ITERATION, [int c; for (c = 0; !c ; c++)])
4652 dnl You allocate a pty by opening /dev/ptc to get the master side.
4653 dnl To get the name of the slave side, you just ttyname() the master side.
4654 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptc");])
4655 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [strcpy (pty_name, ttyname (fd));])
4659 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4660 dnl multi-line AC_DEFINEs are hard. :(
4661 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)])
4662 AC_DEFINE(PTY_NAME_SPRINTF, [])
4663 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
4667 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4670 gnu-linux | gnu-kfreebsd | dragonfly | freebsd | netbsd | darwin | nacl )
4672 if test "x$ac_cv_func_grantpt" = xyes; then
4673 AC_DEFINE(UNIX98_PTYS, 1, [Define if the system has Unix98 PTYs.])
4674 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4675 dnl Note that grantpt and unlockpt may fork. We must block SIGCHLD
4676 dnl to prevent sigchld_handler from intercepting the child's death.
4677 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); }])
4678 dnl if HAVE_POSIX_OPENPT
4679 if test "x$ac_cv_func_posix_openpt" = xyes; then
4680 AC_DEFINE(PTY_OPEN, [do { fd = posix_openpt (O_RDWR | O_CLOEXEC | O_NOCTTY); if (fd < 0 && errno == EINVAL) fd = posix_openpt (O_RDWR | O_NOCTTY); } while (false)])
4681 AC_DEFINE(PTY_NAME_SPRINTF, [])
4683 elif test "x$ac_cv_func_getpt" = xyes; then
4684 AC_DEFINE(PTY_OPEN, [fd = getpt ()])
4685 AC_DEFINE(PTY_NAME_SPRINTF, [])
4687 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4690 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4695 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4696 AC_DEFINE(PTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/ptym/pty%c%x", c, i);])
4697 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/pty/tty%c%x", c, i);])
4701 dnl On SysVr4, grantpt(3) forks a subprocess, so do not use
4702 dnl O_CLOEXEC when opening the pty, and keep the SIGCHLD handler
4703 dnl from intercepting that death. If any child but grantpt's should die
4704 dnl within, it should be caught after sigrelse(2).
4705 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4706 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); }])
4710 dnl Comments are as per sol2*.
4711 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4712 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); }])
4719 dnl This change means that we don't loop through allocate_pty too
4720 dnl many times in the (rare) event of a failure.
4721 AC_DEFINE(FIRST_PTY_LETTER, ['z'])
4722 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4723 dnl Push various streams modules onto a PTY channel. Used in process.c.
4724 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.])
4729 AH_TEMPLATE(SIGNALS_VIA_CHARACTERS, [Make process_send_signal work by
4730 "typing" a signal character on the pty.])
4733 dnl Perry Smith <pedz@ddivt1.austin.ibm.com> says this is correct for AIX.
4734 aix4-2 | cygwin | gnu | dragonfly | freebsd | netbsd | openbsd | darwin )
4735 AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4738 dnl 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works.
4739 dnl FIXME Does gnu-kfreebsd have linux/version.h? It seems unlikely...
4740 gnu-linux | gnu-kfreebsd )
4742 AC_MSG_CHECKING([for signals via characters])
4743 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4744 #include <linux/version.h>
4745 #if LINUX_VERSION_CODE < 0x20400
4746 # error "Linux version too old"
4748 ]], [[]])], emacs_signals_via_chars=yes, emacs_signals_via_chars=no)
4750 AC_MSG_RESULT([$emacs_signals_via_chars])
4751 test $emacs_signals_via_chars = yes && AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4756 AH_TEMPLATE(TAB3, [Undocumented.])
4759 darwin) AC_DEFINE(TAB3, OXTABS) ;;
4761 gnu | dragonfly | freebsd | netbsd | openbsd )
4762 AC_DEFINE(TABDLY, OXTABS, [Undocumented.])
4763 AC_DEFINE(TAB3, OXTABS)
4766 gnu-linux | gnu-kfreebsd )
4767 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4771 ]], [[]])], AC_DEFINE(GC_MARK_SECONDARY_STACK(),
4772 [do { extern void *__libc_ia64_register_backing_store_base; __builtin_ia64_flushrs (); mark_memory (__libc_ia64_register_backing_store_base, __builtin_ia64_bsp ());} while (false)],
4773 [Mark a secondary stack, like the register stack on the ia64.]), [])
4777 AC_DEFINE(RUN_TIME_REMAP, 1, [Define if emacs.c needs to call
4778 run_time_remap; for HPUX.])
4783 dnl This won't be used automatically yet. We also need to know, at least,
4784 dnl that the stack is continuous.
4785 AH_TEMPLATE(GC_SETJMP_WORKS, [Define if setjmp is known to save all
4786 registers relevant for conservative garbage collection in the jmp_buf.])
4790 dnl Not all the architectures are tested, but there are Debian packages
4791 dnl for SCM and/or Guile on them, so the technique must work. See also
4792 dnl comments in alloc.c concerning setjmp and gcc.
4793 dnl Fixme: it's probably safe to just use the GCC conditional below.
4794 gnu-linux | gnu-kfreebsd )
4795 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4796 #if defined __i386__ || defined __sparc__ || defined __mc68000__ \
4797 || defined __alpha__ || defined __mips__ || defined __s390__ \
4798 || defined __arm__ || defined __powerpc__ || defined __amd64__ \
4799 || defined __ia64__ || defined __sh__
4802 # error "setjmp not known to work on this arch"
4804 ]], [[]])], AC_DEFINE(GC_SETJMP_WORKS, 1))
4809 if test x$GCC = xyes; then
4810 dnl GC_SETJMP_WORKS is nearly always appropriate for GCC.
4811 AC_DEFINE(GC_SETJMP_WORKS, 1)
4814 aix* | dragonfly | freebsd | netbsd | openbsd | sol2* )
4815 AC_DEFINE(GC_SETJMP_WORKS, 1)
4820 dnl In a weird quirk, MS runtime uses _setjmp and longjmp.
4821 AC_CACHE_CHECK([for _setjmp], [emacs_cv_func__setjmp],
4824 [[#include <setjmp.h>
4826 # define _longjmp longjmp
4831 _longjmp (j, 1);]])],
4832 [emacs_cv_func__setjmp=yes],
4833 [emacs_cv_func__setjmp=no])])
4834 if test $emacs_cv_func__setjmp = yes; then
4835 AC_DEFINE([HAVE__SETJMP], 1, [Define to 1 if _setjmp and _longjmp work.])
4838 # We need to preserve signal mask to handle C stack overflows.
4839 AC_CACHE_CHECK([for sigsetjmp], [emacs_cv_func_sigsetjmp],
4842 [[#include <setjmp.h>
4845 if (! sigsetjmp (j, 1))
4846 siglongjmp (j, 1);]])],
4847 [emacs_cv_func_sigsetjmp=yes],
4848 [emacs_cv_func_sigsetjmp=no])])
4849 if test $emacs_cv_func_sigsetjmp = yes; then
4850 AC_DEFINE([HAVE_SIGSETJMP], 1,
4851 [Define to 1 if sigsetjmp and siglongjmp work.])
4854 case $emacs_cv_func_sigsetjmp,$emacs_cv_alternate_stack,$opsys in
4855 yes,yes,* | *,*,mingw32)
4856 AC_DEFINE([HAVE_STACK_OVERFLOW_HANDLING], 1,
4857 [Define to 1 if C stack overflow can be handled in some cases.]);;
4862 dnl TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
4863 dnl subprocesses the usual way. But TIOCSIGNAL does work for PTYs,
4864 dnl and this is all we need.
4865 AC_DEFINE(TIOCSIGSEND, TIOCSIGNAL, [Some platforms redefine this.])
4872 dnl Used in xfaces.c.
4873 AC_DEFINE(XOS_NEEDS_TIME_H, 1, [Compensate for a bug in Xos.h on
4874 some systems, where it requires time.h.])
4879 dnl Define symbols to identify the version of Unix this is.
4880 dnl Define all the symbols that apply correctly.
4881 AH_TEMPLATE(DOS_NT, [Define if the system is MS DOS or MS Windows.])
4882 AH_TEMPLATE(MSDOS, [Define if the system is MS DOS.])
4883 AH_TEMPLATE(USG, [Define if the system is compatible with System III.])
4884 AH_TEMPLATE(USG5_4, [Define if the system is compatible with System V Release 4.])
4889 dnl This symbol should be defined on AIX Version 3 ???????
4890 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4892 # error "_AIX not defined"
4894 ]], [[]])], [], AC_DEFINE(_AIX, [], [Define if the system is AIX.]))
4898 AC_DEFINE(CYGWIN, 1, [Define if the system is Cygwin.])
4902 dnl Not __APPLE__, as this may not be defined on non-macOS Darwin.
4903 dnl Not DARWIN, because Panther and lower CoreFoundation.h use DARWIN to
4904 dnl distinguish macOS from pure Darwin.
4905 AC_DEFINE(DARWIN_OS, [], [Define if the system is Darwin.])
4908 gnu-linux | gnu-kfreebsd )
4910 AC_DEFINE(GNU_LINUX, [], [Define if ths system is compatible with GNU/Linux.])
4915 AC_DEFINE(HPUX, [], [Define if the system is HPUX.])
4919 AC_DEFINE(DOS_NT, [])
4920 AC_DEFINE(WINDOWSNT, 1, [Define if compiling for native MS Windows.])
4921 if test "x$ac_enable_checking" != "x" ; then
4922 AC_DEFINE(EMACSDEBUG, 1, [Define to 1 to enable w32 debug facilities.])
4928 AC_DEFINE(USG5_4, [])
4929 AC_DEFINE(SOLARIS2, [], [Define if the system is Solaris.])
4934 AC_DEFINE(USG5_4, [])
4938 AC_CACHE_CHECK([for usable FIONREAD], [emacs_cv_usable_FIONREAD],
4941 dnl BUILD 9008 - FIONREAD problem still exists in X-Windows.
4942 emacs_cv_usable_FIONREAD=no
4946 emacs_cv_usable_FIONREAD=yes
4951 [AC_LANG_PROGRAM([[#include <sys/types.h>
4952 #include <sys/ioctl.h>
4954 # include <sys/filio.h>
4957 [[int foo = ioctl (0, FIONREAD, &foo);]])],
4958 [emacs_cv_usable_FIONREAD=yes],
4959 [emacs_cv_usable_FIONREAD=no])
4962 if test $emacs_cv_usable_FIONREAD = yes; then
4963 AC_DEFINE([USABLE_FIONREAD], [1], [Define to 1 if FIONREAD is usable.])
4965 if test $emacs_broken_SIGIO = no; then
4966 AC_CACHE_CHECK([for usable SIGIO], [emacs_cv_usable_SIGIO],
4968 [AC_LANG_PROGRAM([[#include <fcntl.h>
4971 [[int foo = SIGIO | F_SETFL | FASYNC;]])],
4972 [emacs_cv_usable_SIGIO=yes],
4973 [emacs_cv_usable_SIGIO=no])],
4974 [emacs_cv_usable_SIGIO=yes],
4975 [emacs_cv_usable_SIGIO=no])
4976 if test $emacs_cv_usable_SIGIO = yes; then
4977 AC_DEFINE([USABLE_SIGIO], [1], [Define to 1 if SIGIO is usable.])
4984 dnl It works to open the pty's tty in the parent (Emacs), then
4985 dnl close and reopen it in the child.
4986 AC_DEFINE(USG_SUBTTY_WORKS, 1, [Define for USG systems where it
4987 works to open a pty's tty in the parent process, then close and
4988 reopen it in the child.])
4992 AC_DEFINE(_STRUCTURED_PROC, 1, [Needed for system_process_attributes
4997 # Set up the CFLAGS for real compilation, so we can substitute it.
4998 CFLAGS="$REAL_CFLAGS"
4999 CPPFLAGS="$REAL_CPPFLAGS"
5002 ## Hack to detect a buggy GCC version.
5003 if test "$GCC" = yes && \
5004 $CC --version 2> /dev/null | grep 'gcc.* 4.5.0' >/dev/null; then
5006 *-fno-optimize-sibling-calls*) ;;
5008 AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS.]);;
5012 version=$PACKAGE_VERSION
5014 copyright="Copyright (C) 2017 Free Software Foundation, Inc."
5015 AC_DEFINE_UNQUOTED(COPYRIGHT, ["$copyright"],
5016 [Short copyright string for this version of Emacs.])
5019 ### Specify what sort of things we'll be editing into Makefile and config.h.
5020 ### Use configuration here uncanonicalized to avoid exceeding size limits.
5022 AC_SUBST(configuration)
5027 AC_SUBST(exec_prefix)
5030 AC_SUBST(sharedstatedir)
5031 AC_SUBST(libexecdir)
5035 AC_SUBST(standardlisppath)
5036 AC_SUBST(locallisppath)
5038 AC_SUBST(x_default_search_path)
5040 AC_SUBST(archlibdir)
5046 ## FIXME? Nothing uses @LD_SWITCH_X_SITE@.
5047 ## src/Makefile.in did add LD_SWITCH_X_SITE (as a cpp define) to the
5048 ## end of LIBX_BASE, but nothing ever set it.
5049 AC_SUBST(LD_SWITCH_X_SITE)
5050 AC_SUBST(C_SWITCH_X_SITE)
5051 AC_SUBST(GNUSTEP_CFLAGS)
5053 ## Used in lwlib/Makefile.in.
5054 AC_SUBST(X_TOOLKIT_TYPE)
5056 AC_SUBST(ns_appbindir)
5057 AC_SUBST(ns_appresdir)
5059 AC_SUBST(GNU_OBJC_CFLAGS)
5060 AC_SUBST(OTHER_FILES)
5062 if test -n "${term_header}"; then
5063 AC_DEFINE_UNQUOTED(TERM_HEADER, "${term_header}",
5064 [Define to the header for the built-in window system.])
5067 AC_DEFINE_UNQUOTED(EMACS_CONFIGURATION, "${canonical}",
5068 [Define to the canonical Emacs configuration name.])
5069 AC_DEFINE_UNQUOTED(EMACS_CONFIG_OPTIONS, "${emacs_config_options}",
5070 [Define to the options passed to configure.])
5075 if test "${HAVE_X_WINDOWS}" = "yes" ; then
5076 AC_DEFINE(HAVE_X_WINDOWS, 1,
5077 [Define to 1 if you want to use the X window system.])
5079 XOBJ="xterm.o xfns.o xselect.o xrdb.o xsmfns.o xsettings.o"
5081 if test "$HAVE_CAIRO" = "yes"; then
5082 FONT_OBJ="ftfont.o ftcrfont.o"
5083 elif test "$HAVE_XFT" = "yes"; then
5084 FONT_OBJ="$FONT_OBJ ftfont.o xftfont.o ftxfont.o"
5085 elif test "$HAVE_FREETYPE" = "yes"; then
5086 FONT_OBJ="$FONT_OBJ ftfont.o ftxfont.o"
5096 if test "${USE_X_TOOLKIT}" != "none" ; then
5098 AC_DEFINE(USE_X_TOOLKIT, 1, [Define to 1 if using an X toolkit.])
5099 if test "${USE_X_TOOLKIT}" = "LUCID"; then
5100 AC_DEFINE(USE_LUCID, 1, [Define to 1 if using the Lucid X toolkit.])
5101 elif test "${USE_X_TOOLKIT}" = "MOTIF"; then
5102 AC_DEFINE(USE_MOTIF, 1, [Define to 1 if using the Motif X toolkit.])
5106 ## Paul Abrahams <abrahams at equinox.shaysnet.com> says this is needed.
5107 MOTIF_LIBW="$MOTIF_LIBW -lXpm"
5111 ## Richard Anthony Ryan <ryanr at ellingtn.ftc.nrcs.usda.gov>
5112 ## says -lXimp is needed in UNIX_SV ... 4.2 1.1.2.
5113 MOTIF_LIBW="MOTIF_LIBW -lXimp"
5117 ## olson@mcs.anl.gov says -li18n is needed by -lXm.
5118 MOTIF_LIBW="$MOTIF_LIBW -li18n"
5121 MOTIF_LIBW="$MOTIF_LIBW $LIBXP"
5124 AC_SUBST(WIDGET_OBJ)
5127 case "$USE_X_TOOLKIT" in
5128 MOTIF) TOOLKIT_LIBW="$MOTIF_LIBW" ;;
5129 LUCID) TOOLKIT_LIBW="$LUCID_LIBW" ;;
5130 none) test "x$HAVE_GTK" = "xyes" && TOOLKIT_LIBW="$GTK_LIBS" ;;
5132 if test "$HAVE_XWIDGETS" = "yes"; then
5133 TOOLKIT_LIBW="$TOOLKIT_LIBW -lXcomposite"
5135 AC_SUBST(TOOLKIT_LIBW)
5137 if test "${opsys}" != "mingw32"; then
5138 if test "$USE_X_TOOLKIT" = "none"; then
5139 LIBXT_OTHER="\$(LIBXSM)"
5141 LIBXT_OTHER="\$(LIBXMU) -lXt \$(LIBXTR6) -lXext"
5144 AC_SUBST(LIBXT_OTHER)
5146 if test "${HAVE_X11}" = "yes" ; then
5147 AC_DEFINE(HAVE_X11, 1,
5148 [Define to 1 if you want to use version 11 of X windows.])
5149 LIBX_OTHER="\$(LIBXT) \$(LIBX_EXTRA)"
5153 AC_SUBST(LIBX_OTHER)
5156 if test "$HAVE_GTK" = yes || test "$HAVE_X11" != yes; then
5158 elif test "$USE_X_TOOLKIT" = none; then
5160 LIBXMENU='$(oldXMenudir)/libXMenu11.a'
5161 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS oldXMenu"
5163 LIBXMENU='$(lwlibdir)/liblw.a'
5164 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS lwlib"
5168 AC_CACHE_CHECK([for struct alignment],
5169 [emacs_cv_struct_alignment],
5171 [AC_LANG_PROGRAM([[#include <stddef.h>
5172 struct __attribute__ ((aligned (8))) s { char c; };
5173 struct t { char c; struct s s; };
5174 char verify[offsetof (struct t, s) == 8 ? 1 : -1];
5176 [emacs_cv_struct_alignment=yes],
5177 [emacs_cv_struct_alignment=no])])
5178 if test "$emacs_cv_struct_alignment" = yes; then
5179 AC_DEFINE([HAVE_STRUCT_ATTRIBUTE_ALIGNED], 1,
5180 [Define to 1 if 'struct __attribute__ ((aligned (N)))' aligns the
5181 structure to an N-byte boundary.])
5184 if test "${GNU_MALLOC}" = "yes" ; then
5185 AC_DEFINE(GNU_MALLOC, 1,
5186 [Define to 1 if you want to use the GNU memory allocator.])
5190 if test "${REL_ALLOC}" = "yes" ; then
5191 AC_DEFINE(REL_ALLOC, 1,
5192 [Define REL_ALLOC if you want to use the relocating allocator for
5195 test "$system_malloc" != "yes" && RALLOC_OBJ=ralloc.o
5197 AC_SUBST(RALLOC_OBJ)
5199 if test "$opsys" = "cygwin"; then
5200 CYGWIN_OBJ="cygw32.o"
5201 ## Cygwin differs because of its unexec().
5203 POST_ALLOC_OBJ=lastfile.o
5204 elif test "$opsys" = "mingw32"; then
5207 POST_ALLOC_OBJ=lastfile.o
5210 PRE_ALLOC_OBJ=lastfile.o
5213 AC_SUBST(CYGWIN_OBJ)
5214 AC_SUBST(PRE_ALLOC_OBJ)
5215 AC_SUBST(POST_ALLOC_OBJ)
5217 dnl Call this 'FORTIFY_SOUR' so that it sorts before the 'FORTIFY_SOURCE'
5218 dnl verbatim defined above. The tricky name is apropos, as this hack
5219 dnl makes Fortify go sour!
5220 AH_VERBATIM([FORTIFY_SOUR],
5221 [/* Without the following workaround, Emacs runs slowly on OS X 10.8.
5222 The workaround disables some useful run-time checking, so it
5223 should be conditional to the platforms with the performance bug.
5224 Perhaps Apple will fix this some day; also see m4/extern-inline.m4. */
5225 #if defined __APPLE__ && defined __GNUC__
5226 # ifndef _DONT_USE_CTYPE_INLINE_
5227 # define _DONT_USE_CTYPE_INLINE_
5229 # ifndef _FORTIFY_SOURCE
5230 # define _FORTIFY_SOURCE 0
5235 # If user asks to omit features, disable optional features that gnulib
5236 # might otherwise enable.
5237 if test "$with_features" = no && test "$enable_acl" != yes; then
5241 # Configure gnulib. Although this does not affect CFLAGS or LIBS permanently.
5242 # it temporarily reverts them to their pre-pkg-config values,
5243 # because gnulib needs to work with both src (which uses the
5244 # pkg-config stuff) and lib-src (which does not). For example, gnulib
5245 # may need to determine whether LIB_CLOCK_GETTIME should contain -lrt,
5246 # and it therefore needs to run in an environment where LIBS does not
5247 # already contain -lrt merely because 'pkg-config --libs' printed '-lrt'
5248 # for some package unrelated to lib-src.
5251 CFLAGS=$pre_PKG_CONFIG_CFLAGS
5252 LIBS="$LIB_PTHREAD $pre_PKG_CONFIG_LIBS"
5253 gl_ASSERT_NO_GNULIB_POSIXCHECK
5254 gl_ASSERT_NO_GNULIB_TESTS
5259 if test "${opsys}" = "mingw32"; then
5260 CPPFLAGS="$CPPFLAGS -DUSE_CRT_DLL=1 -I \${abs_top_srcdir}/nt/inc"
5261 # Remove unneeded switches from the value of CC that goes to Makefiles
5262 CC=`AS_ECHO(["$CC"]) | sed -e "s,$GCC_TEST_OPTIONS,,"`
5266 aix4-2) LD_SWITCH_SYSTEM_TEMACS="-Wl,-bnodelcsect" ;;
5268 cygwin) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000" ;;
5271 ## The -headerpad option tells ld (see man page) to leave room at the
5272 ## end of the header for adding load commands. Needed for dumping.
5273 ## 0x1000 is enough for roughly 52 load commands on the x86_64
5274 ## architecture (where they are 78 bytes each). The actual number of
5275 ## load commands added is not consistent but normally ranges from
5276 ## about 14 to about 34. Setting it high gets us plenty of slop and
5277 ## only costs about 1.5K of wasted binary space.
5278 headerpad_extra=1000
5279 if test "$HAVE_NS" = "yes"; then
5280 libs_nsgui="-framework AppKit"
5281 if test "$NS_IMPL_COCOA" = "yes"; then
5282 libs_nsgui="$libs_nsgui -framework IOKit"
5287 LD_SWITCH_SYSTEM_TEMACS="-fno-pie -prebind $libs_nsgui -Xlinker -headerpad -Xlinker $headerpad_extra"
5289 ## This is here because src/Makefile.in did some extra fiddling around
5290 ## with LD_SWITCH_SYSTEM. It seems cleaner to put this in
5291 ## LD_SWITCH_SYSTEM_TEMACS instead,
5292 test "x$LD_SWITCH_SYSTEM" = "x" && test "x$GCC" != "xyes" && \
5293 LD_SWITCH_SYSTEM_TEMACS="-X $LD_SWITCH_SYSTEM_TEMACS"
5296 ## LD_SWITCH_X_SITE_RPATH is a -rpath option saying where to
5297 ## find X at run-time.
5298 ## When handled by cpp, this was in LD_SWITCH_SYSTEM. However, at the
5299 ## point where configure sourced the s/*.h file, LD_SWITCH_X_SITE_RPATH
5300 ## had not yet been defined and was expanded to null. Hence LD_SWITCH_SYSTEM
5301 ## had different values in configure (in ac_link) and src/Makefile.in.
5302 ## It seems clearer therefore to put this piece in LD_SWITCH_SYSTEM_TEMACS.
5303 gnu*) LD_SWITCH_SYSTEM_TEMACS="\$(LD_SWITCH_X_SITE_RPATH)" ;;
5306 ## Is it any better under MinGW64 to relocate emacs into higher addresses?
5307 case "$canonical" in
5308 x86_64-*-*) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x400000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5309 *) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x01000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5313 *) LD_SWITCH_SYSTEM_TEMACS= ;;
5316 # -no-pie or -nopie fixes a temacs segfault on Gentoo, OpenBSD,
5317 # Ubuntu, and other systems with "hardened" GCC configurations for
5318 # some reason (Bug#18784). We don't know why this works, but not
5319 # segfaulting is better than segfaulting. Use ac_c_werror_flag=yes
5320 # when trying the option, otherwise clang keeps warning that it does
5321 # not understand it, and pre-4.6 GCC has a similar problem
5322 # (Bug#20338). Prefer -no-pie to -nopie, as -no-pie is the
5323 # spelling used by GCC 6.1.0 and later (Bug#24682).
5325 [for $CC option to disable position independent executables],
5326 [emacs_cv_prog_cc_no_pie],
5327 [emacs_save_c_werror_flag=$ac_c_werror_flag
5328 emacs_save_LDFLAGS=$LDFLAGS
5329 ac_c_werror_flag=yes
5330 for emacs_cv_prog_cc_no_pie in -no-pie -nopie no; do
5331 test $emacs_cv_prog_cc_no_pie = no && break
5332 LDFLAGS="$emacs_save_LDFLAGS $emacs_cv_prog_cc_no_pie"
5333 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [break])
5335 ac_c_werror_flag=$emacs_save_c_werror_flag
5336 LDFLAGS=$emacs_save_LDFLAGS])
5337 if test "$emacs_cv_prog_cc_no_pie" != no; then
5338 LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS $emacs_cv_prog_cc_no_pie"
5341 if test x$ac_enable_profiling != x ; then
5343 *freebsd | gnu-linux) ;;
5344 *) LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -pg" ;;
5348 LD_SWITCH_SYSTEM_TEMACS="$LDFLAGS_NOCOMBRELOC $LD_SWITCH_SYSTEM_TEMACS"
5350 AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
5352 ## Common for all window systems
5353 if test "$window_system" != "none"; then
5354 AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])
5355 AC_DEFINE(POLL_FOR_INPUT, 1, [Define if you poll periodically to detect C-g.])
5356 WINDOW_SYSTEM_OBJ="fontset.o fringe.o image.o"
5359 AC_SUBST(WINDOW_SYSTEM_OBJ)
5361 AH_TOP([/* GNU Emacs site configuration template file.
5363 Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2017
5364 Free Software Foundation, Inc.
5366 This file is part of GNU Emacs.
5368 GNU Emacs is free software: you can redistribute it and/or modify
5369 it under the terms of the GNU General Public License as published by
5370 the Free Software Foundation, either version 3 of the License, or (at
5371 your option) any later version.
5373 GNU Emacs is distributed in the hope that it will be useful,
5374 but WITHOUT ANY WARRANTY; without even the implied warranty of
5375 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5376 GNU General Public License for more details.
5378 You should have received a copy of the GNU General Public License
5379 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
5382 /* No code in Emacs #includes config.h twice, but some bits of code
5383 intended to work with other packages as well (like gmalloc.c)
5384 think they can include it as many times as they like. */
5385 #ifndef EMACS_CONFIG_H
5386 #define EMACS_CONFIG_H
5389 AH_BOTTOM([#include <conf_post.h>
5391 #endif /* EMACS_CONFIG_H */
5400 #### Report on what we decided to do.
5401 #### Report GTK as a toolkit, even if it doesn't use Xt.
5402 #### It makes printing result more understandable as using GTK sets
5403 #### toolkit_scroll_bars to yes by default.
5404 if test "${HAVE_GTK}" = "yes"; then
5405 USE_X_TOOLKIT="$USE_GTK_TOOLKIT"
5408 if test $USE_ACL -ne 0; then
5409 ACL_SUMMARY="yes $LIB_ACL"
5414 emacs_standard_dirs='Standard dirs'
5416 Configured for '${canonical}'.
5418 Where should the build process find the source code? ${srcdir}
5419 What compiler should emacs be built with? ${CC} ${CFLAGS}
5420 Should Emacs use the GNU version of malloc? ${GNU_MALLOC}${GNU_MALLOC_reason}
5421 Should Emacs use a relocating allocator for buffers? ${REL_ALLOC}
5422 Should Emacs use mmap(2) for buffer allocation? $use_mmap_for_buffers
5423 What window system should Emacs use? ${window_system}
5424 What toolkit should Emacs use? ${USE_X_TOOLKIT}
5425 Where do we find X Windows header files? ${x_includes:-$emacs_standard_dirs}
5426 Where do we find X Windows libraries? ${x_libraries:-$emacs_standard_dirs}"])
5429 emacs_config_features=
5430 for opt in XAW3D XPM JPEG TIFF GIF PNG RSVG CAIRO IMAGEMAGICK SOUND GPM DBUS \
5431 GCONF GSETTINGS NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT \
5432 LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS X_TOOLKIT OLDXMENU X11 NS MODULES \
5433 XWIDGETS LIBSYSTEMD CANNOT_DUMP; do
5436 CANNOT_DUMP) eval val=\${$opt} ;;
5437 NOTIFY|ACL) eval val=\${${opt}_SUMMARY} ;;
5438 TOOLKIT_SCROLL_BARS|X_TOOLKIT) eval val=\${USE_$opt} ;;
5439 *) eval val=\${HAVE_$opt} ;;
5442 xno|xnone|x) continue ;;
5447 GTK*|LUCID|MOTIF) opt=$val ;;
5452 AS_VAR_APPEND([emacs_config_features], ["$optsep$opt"])
5455 AC_DEFINE_UNQUOTED(EMACS_CONFIG_FEATURES, "${emacs_config_features}",
5456 [Summary of some of the main features enabled by configure.])
5458 AS_ECHO([" Does Emacs use -lXaw3d? ${HAVE_XAW3D}
5459 Does Emacs use -lXpm? ${HAVE_XPM}
5460 Does Emacs use -ljpeg? ${HAVE_JPEG}
5461 Does Emacs use -ltiff? ${HAVE_TIFF}
5462 Does Emacs use a gif library? ${HAVE_GIF} $LIBGIF
5463 Does Emacs use a png library? ${HAVE_PNG} $LIBPNG
5464 Does Emacs use -lrsvg-2? ${HAVE_RSVG}
5465 Does Emacs use cairo? ${HAVE_CAIRO}
5466 Does Emacs use imagemagick (version 6)? ${HAVE_IMAGEMAGICK}
5467 Does Emacs support sound? ${HAVE_SOUND}
5468 Does Emacs use -lgpm? ${HAVE_GPM}
5469 Does Emacs use -ldbus? ${HAVE_DBUS}
5470 Does Emacs use -lgconf? ${HAVE_GCONF}
5471 Does Emacs use GSettings? ${HAVE_GSETTINGS}
5472 Does Emacs use a file notification library? ${NOTIFY_SUMMARY}
5473 Does Emacs use access control lists? ${ACL_SUMMARY}
5474 Does Emacs use -lselinux? ${HAVE_LIBSELINUX}
5475 Does Emacs use -lgnutls? ${HAVE_GNUTLS}
5476 Does Emacs use -lxml2? ${HAVE_LIBXML2}
5477 Does Emacs use -lfreetype? ${HAVE_FREETYPE}
5478 Does Emacs use -lm17n-flt? ${HAVE_M17N_FLT}
5479 Does Emacs use -lotf? ${HAVE_LIBOTF}
5480 Does Emacs use -lxft? ${HAVE_XFT}
5481 Does Emacs use -lsystemd? ${HAVE_LIBSYSTEMD}
5482 Does Emacs directly use zlib? ${HAVE_ZLIB}
5483 Does Emacs have dynamic modules support? ${HAVE_MODULES}
5484 Does Emacs use toolkit scroll bars? ${USE_TOOLKIT_SCROLL_BARS}
5485 Does Emacs support Xwidgets (requires gtk3)? ${HAVE_XWIDGETS}
5486 Does Emacs have threading support in lisp? ${threads_enabled}
5489 if test -n "${EMACSDATA}"; then
5490 AS_ECHO([" Environment variable EMACSDATA set to: $EMACSDATA"])
5492 if test -n "${EMACSDOC}"; then
5493 AS_ECHO([" Environment variable EMACSDOC set to: $EMACSDOC"])
5498 if test "$HAVE_NS" = "yes"; then
5500 AS_ECHO(["You must run \"${MAKE-make} install\" in order to test the built application.
5501 The installed application will go to nextstep/Emacs.app and can be
5502 run or moved from there."])
5503 if test "$EN_NS_SELF_CONTAINED" = "yes"; then
5504 echo "The application will be fully self-contained."
5506 AS_ECHO(["The lisp resources for the application will be installed under ${prefix}.
5507 You may need to run \"${MAKE-make} install\" with sudo. The application will fail
5508 to run if these resources are not installed."])
5513 case $opsys,$emacs_uname_r in
5515 AC_MSG_WARN([[building Emacs on Cygwin 1.5 is not supported.]])
5520 # Remove any trailing slashes in these variables.
5522 */) prefix=`AS_DIRNAME(["$prefix."])`;;
5524 case $exec_prefix in
5525 */) exec_prefix=`AS_DIRNAME(["$exec_prefix."])`;;
5528 if test "$HAVE_NS" = "yes"; then
5529 if test "$NS_IMPL_GNUSTEP" = yes; then
5530 AC_CONFIG_FILES([nextstep/GNUstep/Emacs.base/Resources/Info-gnustep.plist:nextstep/templates/Info-gnustep.plist.in \
5531 nextstep/GNUstep/Emacs.base/Resources/Emacs.desktop:nextstep/templates/Emacs.desktop.in])
5532 ns_check_file=Resources/Info-gnustep.plist
5534 AC_CONFIG_FILES([nextstep/Cocoa/Emacs.base/Contents/Info.plist:nextstep/templates/Info.plist.in \
5535 nextstep/Cocoa/Emacs.base/Contents/Resources/English.lproj/InfoPlist.strings:nextstep/templates/InfoPlist.strings.in])
5536 ns_check_file=Contents/Info.plist
5538 AC_SUBST(ns_check_file)
5541 AC_CONFIG_FILES([Makefile lib/gnulib.mk])
5543 dnl config.status treats $srcdir specially, so I think this is ok...
5544 AC_CONFIG_FILES([$srcdir/doc/man/emacs.1])
5546 m4_define([subdir_makefiles],
5547 [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])
5548 SUBDIR_MAKEFILES="subdir_makefiles"
5549 AC_CONFIG_FILES(subdir_makefiles)
5551 dnl test/ is not present in release tarfiles.
5552 opt_makefile=test/Makefile
5554 if test -f "$srcdir/$opt_makefile.in"; then
5555 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
5556 dnl Again, it's best not to use a variable. Though you can add
5557 dnl ", [], [opt_makefile='$opt_makefile']" and it should work.
5558 AC_CONFIG_FILES([test/Makefile])
5562 dnl The admin/ directory used to be excluded from tarfiles.
5563 if test -d $srcdir/admin; then
5564 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES admin/charsets/Makefile admin/unidata/Makefile admin/grammars/Makefile"
5565 AC_CONFIG_FILES([admin/charsets/Makefile])
5566 AC_CONFIG_FILES([admin/unidata/Makefile])
5567 AC_CONFIG_FILES([admin/grammars/Makefile])
5571 SUBDIR_MAKEFILES_IN=`echo " ${SUBDIR_MAKEFILES}" | sed -e 's| | $(srcdir)/|g' -e 's|Makefile|Makefile.in|g'`
5573 AC_SUBST(SUBDIR_MAKEFILES_IN)
5575 dnl You might wonder (I did) why epaths.h is generated by running make,
5576 dnl rather than just letting configure generate it from epaths.in.
5577 dnl One reason is that the various paths are not fully expanded (see above);
5578 dnl e.g., gamedir='${localstatedir}/games/emacs'.
5579 dnl Secondly, the GNU Coding standards require that one should be able
5580 dnl to run 'make prefix=/some/where/else' and override the values set
5581 dnl by configure. This also explains the 'move-if-change' test and
5582 dnl the use of force in the 'epaths-force' rule in Makefile.in.
5583 AC_CONFIG_COMMANDS([src/epaths.h], [
5584 if test "${opsys}" = "mingw32"; then
5585 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force-w32
5587 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force
5588 fi || AC_MSG_ERROR(['src/epaths.h' could not be made.])
5589 ], [GCC="$GCC" CPPFLAGS="$CPPFLAGS" opsys="$opsys"])
5591 dnl NB we have to cheat and use the ac_... version because abs_top_srcdir
5592 dnl is not yet set, sigh. Or we could use ../$srcdir/src/.gdbinit,
5594 AC_CONFIG_COMMANDS([src/.gdbinit], [
5595 if test ! -f src/.gdbinit && test -f "$srcdir/src/.gdbinit"; then
5596 AS_ECHO(["source $ac_abs_top_srcdir/src/.gdbinit"]) > src/.gdbinit
5600 dnl Perhaps this would be better named doc-emacs-emacsver.texi?
5601 dnl See comments for etc-refcards-emacsver.tex.
5602 dnl Since we get a doc/emacs directory generated anyway, for the Makefile,
5603 dnl it is not quite the same. But we are generating in $srcdir.
5604 AC_CONFIG_COMMANDS([doc/emacs/emacsver.texi], [
5605 ${MAKE-make} -s --no-print-directory -C doc/emacs doc-emacsver || \
5606 AC_MSG_ERROR(['doc/emacs/emacsver.texi' could not be made.])
5609 dnl If we give this the more natural name, etc/refcards/emacsver.texi,
5610 dnl then a directory etc/refcards is created in the build directory,
5611 dnl which is probably harmless, but confusing (in out-of-tree builds).
5612 dnl (If we were to generate etc/refcards/Makefile, this might change.)
5613 dnl It is really $srcdir/etc/refcards/emacsver.tex that we generate.
5614 AC_CONFIG_COMMANDS([etc-refcards-emacsver.tex], [
5615 ${MAKE-make} -s MAKEFILE_NAME=do-not-make-Makefile etc-emacsver || \
5616 AC_MSG_ERROR(['etc/refcards/emacsver.tex' could not be made.])
5619 if test $AUTO_DEPEND = yes; then
5620 for dir in $AUTODEPEND_PARENTS; do
5621 AS_MKDIR_P([$dir/deps])
5627 if test ! "$with_mailutils"; then
5628 if test "$with_pop" = yes; then
5629 AC_MSG_WARN([This configuration installs a 'movemail' program
5630 that retrieves POP3 email via only insecure channels.
5631 To omit insecure POP3, you can use '$0 --without-pop'.])
5636 # Don't suggest GNU Mailutils, as it hasn't been ported.
5639 emacs_fix_movemail="use '$0 --with-mailutils'"
5640 case `(movemail --version) 2>/dev/null` in
5642 *) emacs_fix_movemail="install GNU Mailutils
5643 <http://mailutils.org> and $emacs_fix_movemail";;
5645 AC_MSG_NOTICE([You might want to $emacs_fix_movemail.]);;
5649 test "$MAKE" = make || AC_MSG_NOTICE([Now you can run '$MAKE'.])