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-$host}}
179 dnl Support for --program-prefix, --program-suffix and
180 dnl --program-transform-name options
183 dnl It is important that variables on the RHS not be expanded here,
184 dnl hence the single quotes. This is per the GNU coding standards, see
185 dnl (autoconf) Installation Directory Variables
186 dnl See also epaths.h below.
187 lispdir='${datadir}/emacs/${version}/lisp'
188 standardlisppath='${lispdir}'
189 locallisppath='${datadir}/emacs/${version}/site-lisp:'\
190 '${datadir}/emacs/site-lisp'
191 lisppath='${locallisppath}:${standardlisppath}'
192 etcdir='${datadir}/emacs/${version}/etc'
193 archlibdir='${libexecdir}/emacs/${version}/${configuration}'
194 etcdocdir='${datadir}/emacs/${version}/etc'
195 gamedir='${localstatedir}/games/emacs'
197 dnl Special option to disable the most of other options.
199 [AS_HELP_STRING([--without-all],
200 [omit almost all features and build
201 small executable with minimal dependencies])],
202 [with_features=$withval],
205 dnl OPTION_DEFAULT_OFF(NAME, HELP-STRING)
206 dnl Create a new --with option that defaults to being disabled.
207 dnl NAME is the base name of the option. The shell variable with_NAME
208 dnl will be set to either the user's value (if the option is
209 dnl specified; 'yes' for a plain --with-NAME) or to 'no' (if the
210 dnl option is not specified). Note that the shell variable name is
211 dnl constructed as autoconf does, by replacing non-alphanumeric
212 dnl characters with "_".
213 dnl HELP-STRING is the help text for the option.
214 AC_DEFUN([OPTION_DEFAULT_OFF], [dnl
215 AC_ARG_WITH([$1],[AS_HELP_STRING([--with-$1],[$2])],[],[dnl
216 m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=no])dnl
219 dnl OPTION_DEFAULT_ON(NAME, HELP-STRING)
220 dnl Create a new --with option that defaults to $with_features.
221 dnl NAME is the base name of the option. The shell variable with_NAME
222 dnl will be set either to 'no' (for a plain --without-NAME) or to
223 dnl 'yes' (if the option is not specified). Note that the shell
224 dnl variable name is constructed as autoconf does, by replacing
225 dnl non-alphanumeric characters with "_".
226 dnl HELP-STRING is the help text for the option.
227 AC_DEFUN([OPTION_DEFAULT_ON], [dnl
228 AC_ARG_WITH([$1],[AS_HELP_STRING([--without-$1],[$2])],[],[dnl
229 m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=$with_features])dnl
232 # FIXME: The default options '--without-mailutils --with-pop' result
233 # in a movemail implementation that supports only unencrypted POP3
234 # connections. Encrypted connections should be the default.
236 OPTION_DEFAULT_OFF([mailutils],
237 [rely on GNU Mailutils, so that the --without-pop through --with-mailhost
238 options are irrelevant])
239 if test "$with_mailutils" = no; then
242 AC_SUBST([with_mailutils])
244 OPTION_DEFAULT_ON([pop],
245 [don't support POP mail retrieval with movemail (--without-pop or
246 --with-mailutils is recommended, as movemail POP is insecure)])
247 if test "$with_pop" = yes; then
248 AC_DEFINE(MAIL_USE_POP)
250 AH_TEMPLATE(MAIL_USE_POP, [Define to support POP mail retrieval.])dnl
252 OPTION_DEFAULT_OFF([kerberos],[support Kerberos-authenticated POP])
253 if test "$with_kerberos" != no; then
256 AH_TEMPLATE(KERBEROS,
257 [Define to support Kerberos-authenticated POP mail retrieval.])dnl
259 OPTION_DEFAULT_OFF([kerberos5],[support Kerberos version 5 authenticated POP])
260 if test "${with_kerberos5}" != no; then
261 if test "${with_kerberos}" = no; then
265 AC_DEFINE(KERBEROS5, 1, [Define to use Kerberos 5 instead of Kerberos 4.])
268 OPTION_DEFAULT_OFF([hesiod],[support Hesiod to get the POP server host])
269 dnl FIXME hesiod support may not be present, so it seems like an error
270 dnl to define, or at least use, this unconditionally.
271 if test "$with_hesiod" != no; then
272 AC_DEFINE(HESIOD, 1, [Define to support using a Hesiod database to find the POP server.])
275 OPTION_DEFAULT_OFF([mail-unlink],[unlink, rather than empty, mail spool after reading])
276 if test "$with_mail_unlink" != no; then
277 AC_DEFINE(MAIL_UNLINK_SPOOL, 1, [Define to unlink, rather than empty, mail spool after reading.])
280 AC_ARG_WITH([mailhost],[AS_HELP_STRING([--with-mailhost=HOSTNAME],
281 [string giving default POP mail host])],
282 AC_DEFINE_UNQUOTED(MAILHOST, ["$withval"], [String giving fallback POP mail host.]))
284 AC_ARG_WITH([sound],[AS_HELP_STRING([--with-sound=VALUE],
285 [compile with sound support (VALUE one of: yes, alsa, oss, bsd-ossaudio, no;
286 default yes). Only for GNU/Linux, FreeBSD, NetBSD, MinGW, Cygwin.])],
287 [ case "${withval}" in
288 yes|no|alsa|oss|bsd-ossaudio) val=$withval ;;
289 *) AC_MSG_ERROR(['--with-sound=$withval' is invalid;
290 this option's value should be 'yes', 'no', 'alsa', 'oss', or 'bsd-ossaudio'.])
295 [with_sound=$with_features])
297 dnl FIXME currently it is not the last.
298 dnl This should be the last --with option, because --with-x is
299 dnl added later on when we find the file name of X, and it's best to
300 dnl keep them together visually.
301 AC_ARG_WITH([x-toolkit],[AS_HELP_STRING([--with-x-toolkit=KIT],
302 [use an X toolkit (KIT one of: yes or gtk, gtk2, gtk3, lucid or athena, motif, no)])],
303 [ case "${withval}" in
304 y | ye | yes ) val=gtk ;;
306 l | lu | luc | luci | lucid ) val=lucid ;;
307 a | at | ath | athe | athen | athena ) val=athena ;;
308 m | mo | mot | moti | motif ) val=motif ;;
309 g | gt | gtk ) val=gtk ;;
313 AC_MSG_ERROR(['--with-x-toolkit=$withval' is invalid;
314 this option's value should be 'yes', 'no', 'lucid', 'athena', 'motif', 'gtk',
315 'gtk2' or 'gtk3'. 'yes' and 'gtk' are synonyms.
316 'athena' and 'lucid' are synonyms.])
322 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])
323 if test "$with_wide_int" = yes; then
324 AC_DEFINE([WIDE_EMACS_INT], 1, [Use long long for EMACS_INT if available.])
327 dnl _ON results in a '--without' option in the --help output, so
328 dnl the help text should refer to "don't compile", etc.
329 with_xpm_set=${with_xpm+set}
330 OPTION_DEFAULT_ON([xpm],[don't compile with XPM image support])
331 OPTION_DEFAULT_ON([jpeg],[don't compile with JPEG image support])
332 OPTION_DEFAULT_ON([tiff],[don't compile with TIFF image support])
333 OPTION_DEFAULT_ON([gif],[don't compile with GIF image support])
334 OPTION_DEFAULT_ON([png],[don't compile with PNG image support])
335 OPTION_DEFAULT_ON([rsvg],[don't compile with SVG image support])
336 OPTION_DEFAULT_ON([libsystemd],[don't compile with libsystemd support])
337 OPTION_DEFAULT_OFF([cairo],[compile with Cairo drawing (experimental)])
338 OPTION_DEFAULT_ON([xml2],[don't compile with XML parsing support])
339 OPTION_DEFAULT_ON([imagemagick],[don't compile with ImageMagick image support])
341 OPTION_DEFAULT_ON([xft],[don't use XFT for anti aliased fonts])
342 OPTION_DEFAULT_ON([libotf],[don't use libotf for OpenType font support])
343 OPTION_DEFAULT_ON([m17n-flt],[don't use m17n-flt for text shaping])
345 OPTION_DEFAULT_ON([toolkit-scroll-bars],[don't use Motif or Xaw3d scroll bars])
346 OPTION_DEFAULT_ON([xaw3d],[don't use Xaw3d])
347 OPTION_DEFAULT_ON([xim],[don't use X11 XIM])
348 AC_ARG_WITH([ns],[AS_HELP_STRING([--with-ns],
349 [use Nextstep (macOS Cocoa or GNUstep) windowing system.
350 On by default on macOS.])],[],[with_ns=maybe])
351 OPTION_DEFAULT_OFF([w32], [use native MS Windows GUI in a Cygwin build])
353 OPTION_DEFAULT_ON([gpm],[don't use -lgpm for mouse support on a GNU/Linux console])
354 OPTION_DEFAULT_ON([dbus],[don't compile with D-Bus support])
355 OPTION_DEFAULT_ON([gconf],[don't compile with GConf support])
356 OPTION_DEFAULT_ON([gsettings],[don't compile with GSettings support])
357 OPTION_DEFAULT_ON([selinux],[don't compile with SELinux support])
358 OPTION_DEFAULT_ON([gnutls],[don't use -lgnutls for SSL/TLS support])
359 OPTION_DEFAULT_ON([zlib],[don't compile with zlib decompression support])
360 OPTION_DEFAULT_OFF([modules],[compile with dynamic modules support])
361 OPTION_DEFAULT_ON([threads],[don't compile with elisp threading support])
363 AC_ARG_WITH([file-notification],[AS_HELP_STRING([--with-file-notification=LIB],
364 [use a file notification library (LIB one of: yes, inotify, kqueue, gfile, w32, no)])],
365 [ case "${withval}" in
366 y | ye | yes ) val=yes ;;
368 i | in | ino | inot | inoti | inotif | inotify ) val=inotify ;;
369 k | kq | kqu | kque | kqueu | kqueue ) val=kqueue ;;
370 g | gf | gfi | gfil | gfile ) val=gfile ;;
371 w | w3 | w32 ) val=w32 ;;
372 * ) AC_MSG_ERROR(['--with-file-notification=$withval' is invalid;
373 this option's value should be 'yes', 'no', 'inotify', 'kqueue', 'gfile' or 'w32'.
374 'yes' is a synonym for 'w32' on MS-Windows, for 'no' on Nextstep,
375 otherwise for the first of 'inotify', 'kqueue' or 'gfile' that is usable.])
378 with_file_notification=$val
380 [with_file_notification=$with_features])
382 OPTION_DEFAULT_OFF([xwidgets],
383 [enable use of some gtk widgets in Emacs buffers (requires gtk3)])
385 ## For the times when you want to build Emacs but don't have
386 ## a suitable makeinfo, and can live without the manuals.
387 dnl http://lists.gnu.org/archive/html/emacs-devel/2008-04/msg01844.html
388 OPTION_DEFAULT_ON([makeinfo],[don't require makeinfo for building manuals])
390 ## Makefile.in needs the cache file name.
393 ## This is an option because I do not know if all info/man support
394 ## compressed files, nor how to test if they do so.
395 OPTION_DEFAULT_ON([compress-install],
396 [don't compress some files (.el, .info, etc.) when installing. Equivalent to:
397 make GZIP_PROG= install])
399 AC_ARG_WITH(gameuser,dnl
400 [AS_HELP_STRING([--with-gameuser=USER_OR_GROUP],
401 [user for shared game score files.
402 An argument prefixed by ':' specifies a group instead.])])
405 case ${with_gameuser} in
407 yes) gamegroup=games ;;
408 :*) gamegroup=${with_gameuser#:} ;;
409 *) gameuser=${with_gameuser} ;;
412 AC_ARG_WITH([gnustep-conf],dnl
413 [AS_HELP_STRING([--with-gnustep-conf=FILENAME],
414 [name of GNUstep configuration file to use on systems where the command
415 'gnustep-config' does not work; default $GNUSTEP_CONFIG_FILE, or
416 /etc/GNUstep/GNUstep.conf])])
417 test "X${with_gnustep_conf}" != X && test "${with_gnustep_conf}" != yes && \
418 GNUSTEP_CONFIG_FILE="${with_gnustep_conf}"
419 test "X$GNUSTEP_CONFIG_FILE" = "X" && \
420 GNUSTEP_CONFIG_FILE=/etc/GNUstep/GNUstep.conf
422 AC_ARG_ENABLE(ns-self-contained,
423 [AS_HELP_STRING([--disable-ns-self-contained],
424 [disable self contained build under NeXTstep])],
425 EN_NS_SELF_CONTAINED=$enableval,
426 EN_NS_SELF_CONTAINED=yes)
429 AC_ARG_ENABLE(locallisppath,
430 [AS_HELP_STRING([--enable-locallisppath=PATH],
431 [directories Emacs should search for lisp files specific
433 if test "${enableval}" = "no"; then
435 elif test "${enableval}" != "yes"; then
436 locallisppath=${enableval} locallisppathset=yes
439 AC_ARG_ENABLE(checking,
440 [AS_HELP_STRING([--enable-checking@<:@=LIST@:>@],
441 [enable expensive run-time checks. With LIST,
442 enable only specific categories of checks.
443 Categories are: all,yes,no.
444 Flags are: stringbytes, stringoverrun, stringfreelist,
445 xmallocoverrun, conslist, glyphs])],
446 [ac_checking_flags="${enableval}"],[])
447 IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
448 for check in $ac_checking_flags
451 # these set all the flags to specific states
452 yes) ac_enable_checking=1 ;;
453 no) ac_enable_checking= ;
454 ac_gc_check_stringbytes= ;
455 ac_gc_check_string_overrun= ;
456 ac_gc_check_string_free_list= ;
457 ac_xmalloc_overrun= ;
458 ac_gc_check_cons_list= ;
460 all) ac_enable_checking=1 ;
461 ac_gc_check_stringbytes=1 ;
462 ac_gc_check_string_overrun=1 ;
463 ac_gc_check_string_free_list=1 ;
464 ac_xmalloc_overrun=1 ;
465 ac_gc_check_cons_list=1 ;
467 # these enable particular checks
468 stringbytes) ac_gc_check_stringbytes=1 ;;
469 stringoverrun) ac_gc_check_string_overrun=1 ;;
470 stringfreelist) ac_gc_check_string_free_list=1 ;;
471 xmallocoverrun) ac_xmalloc_overrun=1 ;;
472 conslist) ac_gc_check_cons_list=1 ;;
473 glyphs) ac_glyphs_debug=1 ;;
474 *) AC_MSG_ERROR(unknown check category $check) ;;
479 if test x$ac_enable_checking != x ; then
480 AC_DEFINE(ENABLE_CHECKING, 1,
481 [Define to 1 if expensive run-time data type and consistency checks are enabled.])
483 if test x$ac_gc_check_stringbytes != x ; then
484 AC_DEFINE(GC_CHECK_STRING_BYTES, 1,
485 [Define this temporarily to hunt a bug. If defined, the size of
486 strings is redundantly recorded in sdata structures so that it can
487 be compared to the sizes recorded in Lisp strings.])
489 if test x$ac_gc_check_string_overrun != x ; then
490 AC_DEFINE(GC_CHECK_STRING_OVERRUN, 1,
491 [Define this to check for short string overrun.])
493 if test x$ac_gc_check_string_free_list != x ; then
494 AC_DEFINE(GC_CHECK_STRING_FREE_LIST, 1,
495 [Define this to check the string free list.])
497 if test x$ac_xmalloc_overrun != x ; then
498 AC_DEFINE(XMALLOC_OVERRUN_CHECK, 1,
499 [Define this to check for malloc buffer overrun.])
501 if test x$ac_gc_check_cons_list != x ; then
502 AC_DEFINE(GC_CHECK_CONS_LIST, 1,
503 [Define this to check for errors in cons list.])
505 if test x$ac_glyphs_debug != x ; then
506 AC_DEFINE(GLYPH_DEBUG, 1,
507 [Define this to enable glyphs debugging code.])
510 dnl The name of this option is unfortunate. It predates, and has no
511 dnl relation to, the "sampling-based elisp profiler" added in 24.3.
512 dnl Actually, it stops it working.
513 dnl http://lists.gnu.org/archive/html/emacs-devel/2012-11/msg00393.html
514 AC_ARG_ENABLE(profiling,
515 [AS_HELP_STRING([--enable-profiling],
516 [build emacs with low-level, gprof profiling support.
517 Mainly useful for debugging Emacs itself. May not work on
518 all platforms. Stops profiler.el working.])],
519 [ac_enable_profiling="${enableval}"],[])
520 if test x$ac_enable_profiling != x ; then
521 PROFILING_CFLAGS="-DPROFILING=1 -pg"
525 AC_SUBST(PROFILING_CFLAGS)
527 AC_ARG_ENABLE(autodepend,
528 [AS_HELP_STRING([--enable-autodepend],
529 [automatically generate dependencies to .h-files.
530 Requires gcc, enabled if found.])],
531 [ac_enable_autodepend="${enableval}"],[ac_enable_autodepend=yes])
533 AC_ARG_ENABLE(gtk-deprecation-warnings,
534 [AS_HELP_STRING([--enable-gtk-deprecation-warnings],
535 [Show Gtk+/Gdk deprecation warnings for Gtk+ >= 3.0])],
536 [ac_enable_gtk_deprecation_warnings="${enableval}"],[])
539 AC_ARG_ENABLE([build-details],
540 [AS_HELP_STRING([--disable-build-details],
541 [Make the build more deterministic by omitting host
542 names, time stamps, etc. from the output.])],
543 [test "$enableval" = no && BUILD_DETAILS=--no-build-details])
544 AC_SUBST([BUILD_DETAILS])
546 dnl This used to use changequote, but, apart from 'changequote is evil'
547 dnl per the autoconf manual, we can speed up autoconf somewhat by quoting
548 dnl the great gob of text. Thus it's not processed for possible expansion.
549 dnl Just make sure the brackets remain balanced.
551 dnl Since Emacs can't find matching pairs of quotes, boundaries are
552 dnl indicated by comments.
556 ### If you add support for a new configuration, add code to this
557 ### switch statement to recognize your configuration name and select
558 ### the appropriate opsys.
560 ### As far as handling version numbers on operating systems is
561 ### concerned, make sure things will fail in a fixable way. If
562 ### /etc/MACHINES doesn't say anything about version numbers, be
563 ### prepared to handle anything reasonably. If version numbers
564 ### matter, be sure /etc/MACHINES says something about it.
567 case "${canonical}" in
569 ## GNU/Linux and similar ports
584 ## FreeBSD kernel + glibc based userland
595 *-*-openbsd* | *-*-mirbsd* )
599 ## Apple Darwin / macOS
601 case "${canonical}" in
602 *-apple-darwin[0-9].*) unported=yes ;;
603 i[3456]86-* | x86_64-* ) ;;
607 ## FIXME: Find a way to use Fink if available (Bug#11507).
610 ## Chromium Native Client
620 ## HP 9000 series 700 and 800, running HP/UX
624 hppa*-hp-hpux1[1-9]* )
626 CFLAGS="-D_INCLUDE__STDC_A1_SOURCE $CFLAGS"
630 rs6000-ibm-aix4.[23]* )
633 powerpc-ibm-aix4.[23]* )
636 rs6000-ibm-aix[56]* )
639 powerpc-ibm-aix[5-9]* | powerpc-ibm-aix[1-9][0-9]* )
645 | i[3456]86-*-solaris2* | i[3456]86-*-sunos5* \
646 | x86_64-*-solaris2* | x86_64-*-sunos5*)
647 case "${canonical}" in
649 amd64-*-*|x86_64-*-*) ;;
653 case "${canonical}" in
654 *-sunos5.[1-9][0-9]* | *-solaris2.[1-9][0-9]* )
656 emacs_check_sunpro_c=yes
658 *-sunos5.[1-5]* | *-solaris2.[1-5]* ) unported=yes ;;
659 ## Note that Emacs 23.1's NEWS said the following would be dropped.
660 *-sunos5.6* | *-solaris2.6* )
664 ## 5.7 EOL Aug 2008, 5.8 EOL Mar 2012.
665 *-sunos5.[7-9]* | *-solaris2.[7-9]* )
667 emacs_check_sunpro_c=yes
670 ## Watch out for a compiler that we know will not work.
671 case "${canonical}" in
672 *-solaris* | *-sunos5* )
673 if [ "x$CC" = x/usr/ucb/cc ]; then
674 ## /usr/ucb/cc doesn't work;
675 ## we should find some other compiler that does work.
683 ## Intel 386 machines where we don't care about the manufacturer.
685 case "${canonical}" in
686 *-darwin* ) opsys=darwin ;;
689 # MinGW overrides and adds some system headers in nt/inc.
690 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
692 *-sysv4.2uw* ) opsys=unixware ;;
693 *-sysv5uw* ) opsys=unixware ;;
694 *-sysv5OpenUNIX* ) opsys=unixware ;;
695 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
701 case "${canonical}" in
704 # MinGW overrides and adds some system headers in nt/inc.
705 GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
707 ## Otherwise, we'll fall through to the generic opsys code at the bottom.
716 ### If the code above didn't choose an operating system, just choose
717 ### an operating system based on the configuration name. You really
718 ### only want to use this when you have no idea what the right
719 ### operating system is; if you know what operating systems a machine
720 ### runs, it's cleaner to make it explicit in the case statement
722 if test x"${opsys}" = x; then
723 case "${canonical}" in
724 *-gnu* ) opsys=gnu ;;
734 if test $unported = yes; then
735 AC_MSG_ERROR([Emacs does not support '${canonical}' systems.
736 If you think it should, please send a report to ${PACKAGE_BUGREPORT}.
737 Check 'etc/MACHINES' for recognized configuration names.])
740 #### Choose a compiler.
742 dnl Don't bother to test for C89.
743 AC_DEFUN([_AC_PROG_CC_C89], [$2])
745 dnl Sets GCC=yes if using gcc.
746 AC_PROG_CC([gcc cc cl clang "$XCRUN gcc" "$XCRUN clang"])
747 if test -n "$XCRUN"; then
748 AC_CHECK_PROGS(AR, [ar "$XCRUN ar"])
749 test -n "$AR" && export AR
752 dnl Emacs needs C99 or later.
757 if test x$GCC = xyes; then
758 test "x$GCC_TEST_OPTIONS" != x && CC="$CC $GCC_TEST_OPTIONS"
761 # Avoid gnulib's tests for -lcrypto, so that there's no static dependency on it.
762 AC_DEFUN([gl_CRYPTO_CHECK])
763 # Avoid gnulib's tests for HAVE_WORKING_O_NOATIME and HAVE_WORKING_O_NOFOLLOW,
764 # as we don't use them.
765 AC_DEFUN([gl_FCNTL_O_FLAGS])
766 # Avoid gnulib's test for pthread_sigmask.
768 for func in $ac_func_list; do
769 test $func = pthread_sigmask || AS_VAR_APPEND([funcs], [" $func"])
772 # Use the system putenv even if it lacks GNU features, as we don't need them,
773 # and the gnulib replacement runs afoul of a FreeBSD 10.1 bug; see Bug#19874.
774 AC_CHECK_FUNCS_ONCE([putenv])
775 AC_DEFUN([gl_FUNC_PUTENV],
776 [test "$ac_cv_func_putenv" = yes || REPLACE_PUTENV=1])
777 # Emacs does not use the wchar or wctype-h modules.
778 AC_DEFUN([gt_TYPE_WINT_T],
779 [GNULIB_OVERRIDES_WINT_T=0
780 AC_SUBST([GNULIB_OVERRIDES_WINT_T])])
782 # Initialize gnulib right after choosing the compiler.
783 dnl Amongst other things, this sets AR and ARFLAGS.
786 if test "$ac_test_CFLAGS" != set; then
787 # It's helpful to have C macros available to GDB, so prefer -g3 to -g
788 # if -g3 works and the user does not specify CFLAGS.
789 # This test must follow gl_EARLY; otherwise AC_LINK_IFELSE complains.
792 emacs_g3_CFLAGS='-g3';;
794 emacs_g3_CFLAGS='-g3 -O2';;
798 if test -n "$emacs_g3_CFLAGS"; then
799 emacs_save_CFLAGS=$CFLAGS
800 CFLAGS=$emacs_g3_CFLAGS
801 AC_CACHE_CHECK([whether $CC accepts $emacs_g3_CFLAGS],
802 [emacs_cv_prog_cc_g3],
803 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
804 [emacs_cv_prog_cc_g3=yes],
805 [emacs_cv_prog_cc_g3=no])])
806 if test $emacs_cv_prog_cc_g3 != yes; then
807 CFLAGS=$emacs_save_CFLAGS
809 if test $opsys = mingw32; then
810 CFLAGS="$CFLAGS -gdwarf-2"
817 # No optimization flag was inferred for this non-GCC compiler.
818 # Try -O. This is needed for xlc on AIX; see Bug#14258.
819 emacs_save_CFLAGS=$CFLAGS
820 test -z "$CFLAGS" || CFLAGS="$CFLAGS "
822 AC_CACHE_CHECK([whether $CC accepts -O],
823 [emacs_cv_prog_cc_o],
824 [AC_LINK_IFELSE([AC_LANG_PROGRAM()],
825 [emacs_cv_prog_cc_o=yes],
826 [emacs_cv_prog_cc_o=no])])
827 if test $emacs_cv_prog_cc_o != yes; then
828 CFLAGS=$emacs_save_CFLAGS
833 # gl_GCC_VERSION_IFELSE([major], [minor], [run-if-found], [run-if-not-found])
834 # ---------------------------------------------------------------------------
835 # If $CPP is gcc-MAJOR.MINOR or newer, then run RUN-IF-FOUND.
836 # Otherwise, run RUN-IF-NOT-FOUND.
837 AC_DEFUN([gl_GCC_VERSION_IFELSE],
841 #if ($1) < __GNUC__ || (($1) == __GNUC__ && ($2) <= __GNUC_MINOR__)
844 # error "your version of gcc is older than $1.$2"
851 AC_ARG_ENABLE([gcc-warnings],
852 [AS_HELP_STRING([--enable-gcc-warnings@<:@=TYPE@:>@],
853 [control generation of GCC warnings. The TYPE 'yes'
854 means to fail if any warnings are issued; 'warn-only'
855 means issue warnings without failing (default for
856 developer builds); 'no' means disable warnings
857 (default for non-developer builds).])],
860 *) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
862 gl_gcc_warnings=$enableval],
863 [# By default, use 'warn-only' if it looks like the invoker of 'configure'
864 # is a developer as opposed to a builder. This is most likely true
865 # if GCC is recent enough and there is a .git directory or file;
866 # however, if there is also a .tarball-version file it is probably
867 # just a release imported into Git for patch management.
869 if test -e "$srcdir"/.git && test ! -f "$srcdir"/.tarball-version; then
870 gl_GCC_VERSION_IFELSE([5], [3], [gl_gcc_warnings=warn-only])
873 AC_ARG_ENABLE([check-lisp-object-type],
874 [AS_HELP_STRING([--enable-check-lisp-object-type],
875 [Enable compile-time checks for the Lisp_Object data type,
876 which can catch some bugs during development.
877 The default is "no" if --enable-gcc-warnings is "no".])])
878 if test "${enable_check_lisp_object_type-$gl_gcc_warnings}" != "no"; then
879 AC_DEFINE([CHECK_LISP_OBJECT_TYPE], 1,
880 [Define to enable compile-time checks for the Lisp_Object data type.])
883 # clang is unduly picky about some things.
884 AC_CACHE_CHECK([whether the compiler is clang], [emacs_cv_clang],
891 [emacs_cv_clang=yes],
892 [emacs_cv_clang=no])])
895 # When compiling with GCC, prefer -isystem to -I when including system
896 # include files, to avoid generating useless diagnostics for the files.
897 AS_IF([test $gl_gcc_warnings = no],
900 AS_IF([test "$emacs_cv_clang" = yes],
902 # Turn off some warnings if supported.
903 gl_WARN_ADD([-Wno-switch])
904 gl_WARN_ADD([-Wno-pointer-sign])
905 gl_WARN_ADD([-Wno-string-plus-int])
906 gl_WARN_ADD([-Wno-unknown-attributes])
911 # This, $nw, is the list of warnings we disable.
914 case $with_x_toolkit in
915 lucid | athena | motif)
916 # Old toolkits mishandle 'const'.
917 nw="$nw -Wwrite-strings"
920 AS_IF([test $gl_gcc_warnings = yes],
921 [WERROR_CFLAGS=-Werror])
923 nw="$nw -Wduplicated-branches" # Too many false alarms
924 nw="$nw -Wformat-overflow=2" # False alarms due to GCC bug 80776
925 nw="$nw -Wsystem-headers" # Don't let system headers trigger warnings
926 nw="$nw -Woverlength-strings" # Not a problem these days
927 nw="$nw -Wformat-nonliteral" # we do this a lot
928 nw="$nw -Wvla" # Emacs uses <vla.h>.
929 nw="$nw -Wswitch-default" # Too many warnings for now
930 nw="$nw -Wunused-const-variable=2" # lisp.h declares const objects.
931 nw="$nw -Winline" # OK to ignore 'inline'
932 nw="$nw -Wstrict-overflow" # OK to optimize assuming that
933 # signed overflow has undefined behavior
934 nw="$nw -Wsync-nand" # irrelevant here, and provokes ObjC warning
935 nw="$nw -Wunsafe-loop-optimizations" # OK to suppress unsafe optimizations
936 nw="$nw -Wbad-function-cast" # These casts are no worse than others.
938 # Emacs doesn't care about shadowing; see
939 # <http://lists.gnu.org/archive/html/emacs-diffs/2011-11/msg00265.html>.
942 # Emacs's use of alloca inhibits protecting the stack.
943 nw="$nw -Wstack-protector"
945 # Emacs's use of partly-const functions such as Fgnutls_available_p
946 # make this option problematic.
947 nw="$nw -Wsuggest-attribute=const"
949 # Emacs's use of partly-pure functions such as CHECK_TYPE make this
950 # option problematic.
951 nw="$nw -Wsuggest-attribute=pure"
953 # This part is merely for shortening the command line,
954 # since -Wall implies -Wswitch.
957 # This part is merely for shortening the command line,
958 # since -Wno-FOO needs to be added below regardless.
959 nw="$nw -Wmissing-field-initializers"
960 nw="$nw -Woverride-init"
961 nw="$nw -Wtype-limits"
962 nw="$nw -Wunused-parameter"
964 if test "$emacs_cv_clang" = yes; then
965 nw="$nw -Wcast-align"
966 nw="$nw -Wdouble-promotion"
967 nw="$nw -Wmissing-braces"
970 # This causes too much noise in the MinGW build
971 if test $opsys = mingw32; then
972 nw="$nw -Wpointer-sign"
975 gl_MANYWARN_ALL_GCC([ws])
976 gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
980 gl_WARN_ADD([-Wredundant-decls]) # Prefer this, as we don't use Bison.
981 gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
982 gl_WARN_ADD([-Wno-override-init]) # More trouble than it is worth
983 gl_WARN_ADD([-Wno-sign-compare]) # Too many warnings for now
984 gl_WARN_ADD([-Wno-type-limits]) # Too many warnings for now
985 gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
986 gl_WARN_ADD([-Wno-format-nonliteral])
988 # clang is unduly picky about braces.
989 if test "$emacs_cv_clang" = yes; then
990 gl_WARN_ADD([-Wno-missing-braces])
993 # This causes too much noise in the MinGW build
994 if test $opsys = mingw32; then
995 gl_WARN_ADD([-Wno-pointer-sign])
998 AC_DEFINE([GCC_LINT], [1], [Define to 1 if --enable-gcc-warnings.])
999 AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
1000 AH_VERBATIM([GNULIB_PORTCHECK_FORTIFY_SOURCE],
1001 [/* Enable compile-time and run-time bounds-checking, and some warnings,
1002 without upsetting glibc 2.15+. */
1003 #if (defined GNULIB_PORTCHECK && !defined _FORTIFY_SOURCE \
1004 && defined __OPTIMIZE__ && __OPTIMIZE__)
1005 # define _FORTIFY_SOURCE 2
1010 # clang is picky about these regardless of whether
1011 # --enable-gcc-warnings is specified.
1012 if test "$emacs_cv_clang" = yes; then
1013 gl_WARN_ADD([-Wno-initializer-overrides])
1014 gl_WARN_ADD([-Wno-tautological-compare])
1015 gl_WARN_ADD([-Wno-tautological-constant-out-of-range-compare])
1018 # Use a slightly smaller set of warning options for lib/.
1020 nw="$nw -Wunused-macros"
1021 gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
1023 AC_SUBST([WERROR_CFLAGS])
1024 AC_SUBST([GNULIB_WARN_CFLAGS])
1033 AC_ARG_ENABLE(link-time-optimization,
1034 [AS_HELP_STRING([--enable-link-time-optimization],
1035 [build emacs with link-time optimization.
1036 This requires GCC 4.5.0 or later, or clang.
1037 (Note that clang support is experimental - see INSTALL.)
1038 It also makes Emacs harder to debug, and when we tried it
1039 with GCC 4.9.0 x86-64 it made Emacs slower, so it's not
1040 recommended for typical use.])],
1041 if test "${enableval}" != "no"; then
1043 if test "$emacs_cv_clang" = yes; then
1044 AC_MSG_CHECKING([whether link-time optimization is supported by clang])
1045 GOLD_PLUGIN=`$CC -print-file-name=LLVMgold.so 2>/dev/null`
1046 if test -x "$GOLD_PLUGIN"; then
1049 elif test x$GCC = xyes; then
1050 AC_MSG_CHECKING([whether link-time optimization is supported by gcc])
1051 CPUS=`getconf _NPROCESSORS_ONLN 2>/dev/null`
1052 if test x$CPUS != x; then
1058 AC_MSG_ERROR([Link-time optimization is not supported with your compiler.])
1060 if test -z "$LTO"; then
1064 CFLAGS="$CFLAGS $LTO"
1065 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
1066 [ac_lto_supported=yes], [ac_lto_supported=no])
1067 CFLAGS="$old_CFLAGS"
1069 AC_MSG_RESULT([$ac_lto_supported])
1070 if test "$ac_lto_supported" = "yes"; then
1071 CFLAGS="$CFLAGS $LTO"
1072 if test "$emacs_cv_clang" = yes; then
1073 AC_MSG_WARN([Please read INSTALL before using link-time optimization with clang])
1074 # WARNING: 'ar --plugin ...' doesn't work without
1075 # command, so plugin name is appended to ARFLAGS.
1076 ARFLAGS="cru --plugin $GOLD_PLUGIN"
1077 RANLIB="$RANLIB --plugin $GOLD_PLUGIN"
1079 dnl The following is needed for GCC 4.9.0. The GCC 4.9.0 release notes
1080 dnl suggest that instead of -ffat-lto-objects we should use gcc-ar and
1081 dnl gcc-ranlib in place of ar and ranlib, but gcc-ar makes /usr/bin/ar
1082 dnl dump core on Fedora 20, so play it safe for now.
1083 gl_COMPILER_OPTION_IF([-ffat-lto-objects],
1084 [CFLAGS="$CFLAGS -ffat-lto-objects"])
1090 dnl Automake replacements.
1091 AC_DEFUN([AM_CONDITIONAL],
1095 dnl Prefer silent make output. For verbose output, use
1096 dnl 'configure --disable-silent-rules' or 'make V=1' .
1097 dnl This code is adapted from Automake.
1098 dnl Although it can be simplified now that GNU Make is assumed,
1099 dnl the simplification hasn't been done yet.
1100 AC_ARG_ENABLE([silent-rules],
1102 [--disable-silent-rules],
1103 [verbose build output (undo: "make V=0")])])
1104 if test "$enable_silent_rules" = no; then
1105 AM_DEFAULT_VERBOSITY=1
1107 AM_DEFAULT_VERBOSITY=0
1110 AM_DEFAULT_V='$(AM_DEFAULT_VERBOSITY)'
1112 AC_SUBST([AM_DEFAULT_V])
1113 AC_SUBST([AM_DEFAULT_VERBOSITY])
1115 dnl Some other nice autoconf tests.
1117 dnl These are commented out, since gl_EARLY and/or Autoconf already does them.
1119 dnl if test "x$RANLIB" = x; then
1124 dnl Sadly, AC_PROG_LN_S is too restrictive. It also tests whether links
1125 dnl can be made to directories. This is not relevant for our usage, and
1126 dnl excludes some cases that work fine for us. Eg MS Windows or files
1127 dnl hosted on AFS, both examples where simple links work, but links to
1128 dnl directories fail. We use a cut-down version instead.
1131 AC_MSG_CHECKING([whether ln -s works for files in the same directory])
1132 rm -f conf$$ conf$$.file
1134 LN_S_FILEONLY='cp -p'
1136 dnl On MinGW, ensure we will call the MSYS /bin/ln.exe, not some
1137 dnl random program in the current directory.
1138 if (echo >conf$$.file) 2>/dev/null; then
1139 if ln -s conf$$.file conf$$ 2>/dev/null; then
1140 if test "$opsys" = "mingw32"; then
1141 LN_S_FILEONLY='/bin/ln -s'
1143 LN_S_FILEONLY='ln -s'
1145 elif ln conf$$.file conf$$ 2>/dev/null; then
1146 if test "$opsys" = "mingw32"; then
1147 LN_S_FILEONLY=/bin/ln
1154 rm -f conf$$ conf$$.file
1156 if test "$LN_S_FILEONLY" = "ln -s"; then
1157 AC_MSG_RESULT([yes])
1159 AC_MSG_RESULT([no, using $LN_S_FILEONLY])
1162 AC_SUBST(LN_S_FILEONLY)
1165 dnl AC_PROG_LN_S sets LN_S to 'cp -pR' for MinGW, on the premise that 'ln'
1166 dnl doesn't support links to directories, as in "ln file dir". But that
1167 dnl use is non-portable, and OTOH MinGW wants to use hard links for Emacs
1168 dnl executables at "make install" time.
1169 dnl See http://lists.gnu.org/archive/html/emacs-devel/2013-04/msg00475.html
1170 dnl for more details.
1171 if test "$opsys" = "mingw32"; then
1175 dnl On some Debian versions, "install-info" prints irritating messages
1176 dnl "This is not dpkg install-info anymore, but GNU install-info"
1177 dnl if called via an absolute file name.
1178 dnl Use the entirely-identical-but-quieter ginstall-info instead if present.
1179 dnl Sadly some people may have an old ginstall-info installed on
1180 dnl non-Debian systems, so we can't use this.
1181 dnl AC_PATH_PROGS(INSTALL_INFO, [ginstall-info install-info], :,
1182 dnl $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1184 AC_PATH_PROG(INSTALL_INFO, install-info, :,
1185 $PATH$PATH_SEPARATOR/usr/sbin$PATH_SEPARATOR/sbin)
1186 dnl Don't use GZIP, which is used by gzip for additional parameters.
1187 AC_PATH_PROG(GZIP_PROG, gzip)
1189 test $with_compress_install != yes && test -n "$GZIP_PROG" && \
1190 GZIP_PROG=" # $GZIP_PROG # (disabled by configure --without-compress-install)"
1192 AC_CACHE_CHECK([for 'find' args to delete a file],
1193 [emacs_cv_find_delete],
1194 [if touch conftest.tmp && find conftest.tmp -delete 2>/dev/null &&
1195 test ! -f conftest.tmp
1196 then emacs_cv_find_delete="-delete"
1197 else emacs_cv_find_delete="-exec rm -f {} ';'"
1199 FIND_DELETE=$emacs_cv_find_delete
1200 AC_SUBST([FIND_DELETE])
1204 if test $opsys = gnu-linux; then
1205 if test "${SETFATTR+set}" != set; then
1206 AC_CACHE_CHECK([for setfattr],
1207 [emacs_cv_prog_setfattr],
1209 if (setfattr -n user.pax.flags conftest.tmp) >/dev/null 2>&1; then
1210 emacs_cv_prog_setfattr=yes
1212 emacs_cv_prog_setfattr=no
1214 if test "$emacs_cv_prog_setfattr" = yes; then
1215 PAXCTL_notdumped='$(SETFATTR) -n user.pax.flags -v er'
1221 AC_SUBST([SETFATTR])
1224 case $opsys,$PAXCTL_notdumped in
1225 gnu-linux, | netbsd,)
1226 AC_PATH_PROG([PAXCTL], [paxctl], [],
1227 [$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR/usr/sbin])
1228 if test -n "$PAXCTL"; then
1229 if test "$opsys" = netbsd; then
1230 PAXCTL_dumped='$(PAXCTL) +a'
1231 PAXCTL_notdumped=$PAXCTL_dumped
1233 AC_MSG_CHECKING([whether binaries have a PT_PAX_FLAGS header])
1234 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1235 [if $PAXCTL -v conftest$EXEEXT >/dev/null 2>&1; then
1236 AC_MSG_RESULT([yes])
1241 if test -n "$PAXCTL"; then
1242 PAXCTL_dumped='$(PAXCTL) -zex'
1243 PAXCTL_notdumped='$(PAXCTL) -r'
1248 AC_SUBST([PAXCTL_dumped])
1249 AC_SUBST([PAXCTL_notdumped])
1251 ## Require makeinfo >= 4.13 (last of the 4.x series) to build the manuals.
1252 if test "${MAKEINFO:=makeinfo}" != "no"; then
1253 case `($MAKEINFO --version) 2>/dev/null` in
1254 *' (GNU texinfo) '4.1[[3-9]]* | \
1255 *' (GNU texinfo) '[[5-9]]* | \
1256 *' (GNU texinfo) '[[1-9][0-9]]* ) ;;
1261 ## Makeinfo is unusual. For a released Emacs, the manuals are
1262 ## pre-built, and not deleted by the normal clean rules. makeinfo is
1263 ## therefore in the category of "special tools" not normally required, which
1264 ## configure does not have to check for (eg autoconf itself).
1265 ## In a repository checkout on the other hand, the manuals are not included.
1266 ## So makeinfo is a requirement to build from the repository, and configure
1267 ## should test for it as it does for any other build requirement.
1268 ## We use the presence of $srcdir/info/emacs to distinguish a release,
1269 ## with pre-built manuals, from a repository checkout.
1272 if test "$MAKEINFO" = "no"; then
1274 if test "x${with_makeinfo}" = "xno"; then
1276 elif test ! -e "$srcdir/info/emacs" && test ! -e "$srcdir/info/emacs.info"; then
1277 AC_MSG_ERROR( [You do not seem to have makeinfo >= 4.13, and your
1278 source tree does not seem to have pre-built manuals in the 'info' directory.
1279 Either install a suitable version of makeinfo, or re-run configure
1280 with the '--without-makeinfo' option to build without the manuals.] )
1283 AC_SUBST([MAKEINFO])
1284 AC_SUBST(HAVE_MAKEINFO)
1286 if test $opsys = mingw32; then
1287 DOCMISC_W32=efaq-w32
1291 AC_SUBST(DOCMISC_W32)
1293 dnl Add our options to ac_link now, after it is set up.
1295 if test x$GCC = xyes; then
1296 test "x$GCC_LINK_TEST_OPTIONS" != x && \
1297 ac_link="$ac_link $GCC_LINK_TEST_OPTIONS"
1299 test "x$NON_GCC_LINK_TEST_OPTIONS" != x && \
1300 ac_link="$ac_link $NON_GCC_LINK_TEST_OPTIONS"
1303 dnl We need -znocombreloc if we're using a relatively recent GNU ld.
1304 dnl If we can link with the flag, it shouldn't do any harm anyhow.
1305 dnl Treat GCC specially since it just gives a non-fatal 'unrecognized option'
1306 dnl if not built to support GNU ld.
1308 dnl For a long time, -znocombreloc was added to LDFLAGS rather than
1309 dnl LD_SWITCH_SYSTEM_TEMACS. That is:
1310 dnl * inappropriate, as LDFLAGS is a user option but this is essential.
1311 dnl Eg "make LDFLAGS=... all" could run into problems,
1312 dnl http://bugs.debian.org/684788
1313 dnl * unnecessary, since temacs is the only thing that actually needs it.
1314 dnl Indeed this is where it was originally, prior to:
1315 dnl http://lists.gnu.org/archive/html/emacs-pretest-bug/2004-03/msg00170.html
1316 late_LDFLAGS="$LDFLAGS"
1317 if test x$GCC = xyes; then
1318 LDFLAGS_NOCOMBRELOC="-Wl,-znocombreloc"
1320 LDFLAGS_NOCOMBRELOC="-znocombreloc"
1323 LDFLAGS="$LDFLAGS $LDFLAGS_NOCOMBRELOC"
1325 AC_MSG_CHECKING([for -znocombreloc])
1326 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])],
1327 [AC_MSG_RESULT(yes)],
1328 LDFLAGS_NOCOMBRELOC=
1329 [AC_MSG_RESULT(no)])
1331 LDFLAGS="$late_LDFLAGS"
1333 AC_CACHE_CHECK([whether addresses are sanitized],
1334 [emacs_cv_sanitize_address],
1337 [[#ifndef __has_feature
1338 #define __has_feature(f) 0
1340 #if defined __SANITIZE_ADDRESS__ || __has_feature (address_sanitizer)
1342 error "Addresses are not sanitized.";
1345 [emacs_cv_sanitize_address=yes],
1346 [emacs_cv_sanitize_address=no])])
1348 dnl The function dump-emacs will not be defined and temacs will do
1349 dnl (load "loadup") automatically unless told otherwise.
1350 test "x$CANNOT_DUMP" = "x" && CANNOT_DUMP=no
1352 nacl) CANNOT_DUMP=yes ;;
1355 if test "$CANNOT_DUMP" = "yes"; then
1356 AC_DEFINE(CANNOT_DUMP, 1, [Define if Emacs cannot be dumped on your system.])
1357 elif test "$emacs_cv_sanitize_address" = yes; then
1358 AC_MSG_WARN([[Addresses are sanitized; suggest CANNOT_DUMP=yes]])
1361 AC_SUBST(CANNOT_DUMP)
1364 UNEXEC_OBJ=unexelf.o
1366 # MSDOS uses unexcoff.o
1368 UNEXEC_OBJ=unexaix.o
1374 UNEXEC_OBJ=unexmacosx.o
1377 UNEXEC_OBJ=unexhp9k800.o
1380 UNEXEC_OBJ=unexw32.o
1383 # Use the Solaris dldump() function, called from unexsol.c, to dump
1384 # emacs, instead of the generic ELF dump code found in unexelf.c.
1385 # The resulting binary has a complete symbol table, and is better
1386 # for debugging and other observability tools (debuggers, pstack, etc).
1388 # If you encounter a problem using dldump(), please consider sending
1389 # a message to the OpenSolaris tools-linking mailing list:
1390 # http://mail.opensolaris.org/mailman/listinfo/tools-linking
1392 # It is likely that dldump() works with older Solaris too, but this has
1393 # not been tested, so for now this change is for Solaris 10 or newer.
1394 UNEXEC_OBJ=unexsol.o
1397 test "$CANNOT_DUMP" = "yes" && UNEXEC_OBJ=
1402 ## Let 'ld' find image libs and similar things in /usr/local/lib.
1403 ## The system compiler, GCC, has apparently been modified to not
1404 ## look there, contrary to what a stock GCC would do.
1405 ### It's not our place to do this. See bug#10313#17.
1406 ### LD_SWITCH_SYSTEM=-L/usr/local/lib
1411 ## cpp test was "ifdef __mips__", but presumably this is equivalent...
1412 case $host_cpu in mips*) LD_SWITCH_SYSTEM="-G 0";; esac
1416 ### It's not our place to do this. See bug#10313#17.
1417 ### LD_SWITCH_SYSTEM="-Wl,-rpath,/usr/pkg/lib -L/usr/pkg/lib -Wl,-rpath,/usr/local/lib -L/usr/local/lib"
1422 ## Han Boetes <han@boetes.org> says this is necessary,
1423 ## otherwise Emacs dumps core on elf systems.
1424 LD_SWITCH_SYSTEM="-Z"
1427 AC_SUBST(LD_SWITCH_SYSTEM)
1429 ac_link="$ac_link $LD_SWITCH_SYSTEM"
1431 ## This setting of LD_SWITCH_SYSTEM references LD_SWITCH_X_SITE_RPATH,
1432 ## which has not been defined yet. When this was handled with cpp,
1433 ## it was expanded to null when configure sourced the s/*.h file.
1434 ## Thus LD_SWITCH_SYSTEM had different values in configure and the Makefiles.
1435 ## FIXME it would be cleaner to put this in LD_SWITCH_SYSTEM_TEMACS
1436 ## (or somesuch), but because it is supposed to go at the _front_
1437 ## of LD_SWITCH_SYSTEM, we cannot do that in exactly the same way.
1438 ## Compare with the gnu-linux case below, which added to the end
1439 ## of LD_SWITCH_SYSTEM, and so can instead go at the front of
1440 ## LD_SWITCH_SYSTEM_TEMACS.
1443 LD_SWITCH_SYSTEM="\$(LD_SWITCH_X_SITE_RPATH) $LD_SWITCH_SYSTEM" ;;
1450 AC_CHECK_DECL([__ELF__])
1451 if test "$ac_cv_have_decl___ELF__" = "yes"; then
1452 ## With ELF, make sure that all common symbols get allocated to in the
1453 ## data section. Otherwise, the dump of temacs may miss variables in
1454 ## the shared library that have been initialized. For example, with
1455 ## GNU libc, __malloc_initialized would normally be resolved to the
1456 ## shared library's .bss section, which is fatal.
1457 if test "x$GCC" = "xyes"; then
1458 C_SWITCH_MACHINE="-fno-common"
1460 AC_MSG_ERROR([Non-GCC compilers are not supported.])
1463 dnl This was the unexalpha.c case. Removed in 24.1, 2010-07-24,
1464 dnl albeit under the mistaken assumption that said file
1465 dnl was no longer used.
1466 AC_MSG_ERROR([Non-ELF systems are not supported since Emacs 24.1.])
1470 AC_SUBST(C_SWITCH_MACHINE)
1472 AC_SUBST(UNEXEC_OBJ)
1475 ## Some programs in src produce warnings saying certain subprograms
1476 ## are too complex and need a MAXMEM value greater than 2000 for
1477 ## additional optimization. --nils@exp-math.uni-essen.de
1478 test "$opsys" = "aix4.2" && test "x$GCC" != "xyes" && \
1479 C_SWITCH_SYSTEM="-ma -qmaxmem=4000"
1480 if test "$opsys" = "mingw32"; then
1481 case "$canonical" in
1482 x86_64-*-mingw*) C_SWITCH_SYSTEM="-mtune=generic" ;;
1483 *) C_SWITCH_SYSTEM="-mtune=pentium4" ;;
1486 ## gnu-linux might need -D_BSD_SOURCE on old libc5 systems.
1487 ## It is redundant in glibc2, since we define _GNU_SOURCE.
1488 AC_SUBST(C_SWITCH_SYSTEM)
1493 ## IBM's X11R5 uses -lIM and -liconv in AIX 3.2.2.
1494 aix4-2) LIBS_SYSTEM="-lrts -lIM -liconv" ;;
1496 freebsd|dragonfly) LIBS_SYSTEM="-lutil" ;;
1498 hpux*) LIBS_SYSTEM="-l:libdld.sl" ;;
1500 sol2*) LIBS_SYSTEM="-lsocket -lnsl" ;;
1502 ## Motif needs -lgen.
1503 unixware) LIBS_SYSTEM="-lsocket -lnsl -lelf -lgen" ;;
1506 AC_SUBST(LIBS_SYSTEM)
1508 ### Make sure subsequent tests use flags consistent with the build flags.
1510 if test x"${OVERRIDE_CPPFLAGS}" != x; then
1511 CPPFLAGS="${OVERRIDE_CPPFLAGS}"
1513 CPPFLAGS="$C_SWITCH_SYSTEM $C_SWITCH_MACHINE $CPPFLAGS"
1516 # Suppress obsolescent Autoconf test for size_t; Emacs assumes C99 or better.
1517 AC_DEFUN([AC_TYPE_SIZE_T])
1518 # Likewise for obsolescent test for uid_t, gid_t; Emacs assumes them.
1519 AC_DEFUN([AC_TYPE_UID_T])
1521 # sqrt and other floating-point functions such as fmod and frexp
1522 # are found in -lm on many systems.
1524 AC_SEARCH_LIBS([sqrt], [m])
1525 if test "X$LIBS" = "X$OLD_LIBS"; then
1528 LIB_MATH=$ac_cv_search_sqrt
1532 dnl Current possibilities handled by sed (aix4-2 -> aix,
1533 dnl gnu-linux -> gnu/linux, etc.):
1534 dnl gnu, gnu/linux, gnu/kfreebsd, aix, cygwin, darwin, hpux.
1535 dnl And special cases: berkeley-unix, usg-unix-v, ms-dos, windows-nt.
1536 SYSTEM_TYPE=`echo $opsys | sed -e 's/[[0-9]].*//' -e 's|-|/|'`
1543 ## Adding -lm confuses the dynamic linker, so omit it.
1546 freebsd | dragonfly )
1547 SYSTEM_TYPE=berkeley-unix
1549 gnu-linux | gnu-kfreebsd )
1551 hpux10-20 | hpux11 )
1555 SYSTEM_TYPE=windows-nt
1557 dnl NB this may be adjusted below.
1559 SYSTEM_TYPE=berkeley-unix
1563 SYSTEM_TYPE=usg-unix-v
1569 AC_DEFINE_UNQUOTED(SYSTEM_TYPE, "$SYSTEM_TYPE",
1570 [The type of system you are compiling for; sets 'system-type'.])
1571 AC_SUBST([SYSTEM_TYPE])
1574 pre_PKG_CONFIG_CFLAGS=$CFLAGS
1575 pre_PKG_CONFIG_LIBS=$LIBS
1577 PKG_PROG_PKG_CONFIG(0.9.0)
1579 dnl EMACS_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4)
1580 dnl acts like PKG_CHECK_MODULES(GSTUFF, gtk+-2.0 >= 1.3 glib = 1.3.4,
1581 dnl HAVE_GSTUFF=yes, HAVE_GSTUFF=no) -- see pkg-config man page --
1582 dnl except that it postprocesses CFLAGS as needed for --enable-gcc-warnings.
1583 dnl EMACS_CHECK_MODULES accepts optional 3rd and 4th arguments that
1584 dnl can take the place of the default HAVE_GSTUFF=yes and HAVE_GSTUFF=no
1586 AC_DEFUN([EMACS_CHECK_MODULES],
1587 [PKG_CHECK_MODULES([$1], [$2],
1588 [$1_CFLAGS=`AS_ECHO(["$$1_CFLAGS"]) | sed -e "$edit_cflags"`
1589 m4_default([$3], [HAVE_$1=yes])],
1590 [m4_default([$4], [HAVE_$1=no])])])
1593 if test "${with_sound}" != "no"; then
1594 # Sound support for GNU/Linux, the free BSDs, MinGW, and Cygwin.
1595 AC_CHECK_HEADERS([machine/soundcard.h sys/soundcard.h soundcard.h mmsystem.h],
1596 have_sound_header=yes, [], [
1598 #define WIN32_LEAN_AND_MEAN
1599 #include <windows.h>
1602 test "${with_sound}" = "oss" && test "${have_sound_header}" != "yes" && \
1603 AC_MSG_ERROR([OSS sound support requested but not found.])
1605 if test "${with_sound}" = "bsd-ossaudio" || test "${with_sound}" = "yes"; then
1606 # Emulation library used on NetBSD.
1607 AC_CHECK_LIB(ossaudio, _oss_ioctl, LIBSOUND=-lossaudio, LIBSOUND=)
1608 test "${with_sound}" = "bsd-ossaudio" && test -z "$LIBSOUND" && \
1609 AC_MSG_ERROR([bsd-ossaudio sound support requested but not found.])
1610 dnl FIXME? If we did find ossaudio, should we set with_sound=bsd-ossaudio?
1611 dnl Traditionally, we go on to check for alsa too. Does that make sense?
1615 if test "${with_sound}" = "alsa" || test "${with_sound}" = "yes"; then
1617 ALSA_MODULES="alsa >= $ALSA_REQUIRED"
1618 EMACS_CHECK_MODULES([ALSA], [$ALSA_MODULES])
1619 if test $HAVE_ALSA = yes; then
1620 SAVE_CFLAGS="$CFLAGS"
1622 CFLAGS="$ALSA_CFLAGS $CFLAGS"
1623 LIBS="$ALSA_LIBS $LIBS"
1624 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <asoundlib.h>]], [[snd_lib_error_set_handler (0);]])],
1625 emacs_alsa_normal=yes,
1626 emacs_alsa_normal=no)
1627 if test "$emacs_alsa_normal" != yes; then
1628 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <alsa/asoundlib.h>]],
1629 [[snd_lib_error_set_handler (0);]])],
1630 emacs_alsa_subdir=yes,
1631 emacs_alsa_subdir=no)
1632 if test "$emacs_alsa_subdir" != yes; then
1633 AC_MSG_ERROR([pkg-config found alsa, but it does not compile. See config.log for error messages.])
1635 ALSA_CFLAGS="$ALSA_CFLAGS -DALSA_SUBDIR_INCLUDE"
1638 CFLAGS="$SAVE_CFLAGS"
1640 LIBSOUND="$LIBSOUND $ALSA_LIBS"
1641 CFLAGS_SOUND="$CFLAGS_SOUND $ALSA_CFLAGS"
1642 AC_DEFINE(HAVE_ALSA, 1, [Define to 1 if ALSA is available.])
1643 elif test "${with_sound}" = "alsa"; then
1644 AC_MSG_ERROR([ALSA sound support requested but not found.])
1646 fi dnl with_sound = alsa|yes
1648 dnl Define HAVE_SOUND if we have sound support. We know it works and
1649 dnl compiles only on the specified platforms. For others, it
1650 dnl probably doesn't make sense to try.
1651 dnl FIXME So surely we should bypass this whole section if not using
1652 dnl one of these platforms?
1653 if test x$have_sound_header = xyes || test $HAVE_ALSA = yes; then
1655 dnl defined __FreeBSD__ || defined __NetBSD__ || defined __linux__
1656 dnl Adjust the --with-sound help text if you change this.
1657 gnu-linux|freebsd|netbsd|mingw32|cygwin)
1658 AC_DEFINE(HAVE_SOUND, 1, [Define to 1 if you have sound support.])
1664 AC_SUBST(CFLAGS_SOUND)
1667 dnl checks for header files
1668 AC_CHECK_HEADERS_ONCE(
1675 sys/utsname.h pwd.h utmp.h util.h sys/prctl.h)
1677 AC_CACHE_CHECK([for ADDR_NO_RANDOMIZE],
1678 [emacs_cv_personality_addr_no_randomize],
1680 [AC_LANG_PROGRAM([[#include <sys/personality.h>]],
1681 [[personality (personality (0xffffffff)
1682 | ADDR_NO_RANDOMIZE)]])],
1683 [emacs_cv_personality_addr_no_randomize=yes],
1684 [emacs_cv_personality_addr_no_randomize=no])])
1685 if test $emacs_cv_personality_addr_no_randomize = yes; then
1686 AC_DEFINE([HAVE_PERSONALITY_ADDR_NO_RANDOMIZE], [1],
1687 [Define to 1 if personality flag ADDR_NO_RANDOMIZE exists.])
1690 # Note that Solaris has sys/sysinfo.h which defines struct
1691 # sysinfo as well. To make sure that we're using GNU/Linux
1692 # sysinfo, we explicitly set one of its fields.
1693 if test "$ac_cv_header_sys_sysinfo_h" = yes; then
1694 AC_MSG_CHECKING([if Linux sysinfo may be used])
1695 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1696 [[struct sysinfo si;
1699 emacs_cv_linux_sysinfo=yes, emacs_cv_linux_sysinfo=no)
1700 AC_MSG_RESULT($emacs_cv_linux_sysinfo)
1701 if test $emacs_cv_linux_sysinfo = yes; then
1702 AC_DEFINE([HAVE_LINUX_SYSINFO], 1, [Define to 1 if you have Linux sysinfo function.])
1703 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <sys/sysinfo.h>]],
1704 [[struct sysinfo si; return si.mem_unit]])],
1705 AC_DEFINE(LINUX_SYSINFO_UNIT, 1,
1706 [Define to 1 if Linux sysinfo sizes are in multiples of mem_unit bytes.]))
1710 dnl On Solaris 8 there's a compilation warning for term.h because
1711 dnl it doesn't define 'bool'.
1712 AC_CHECK_HEADERS(term.h, , , -)
1714 AC_CHECK_DECLS([sys_siglist], [], [], [[#include <signal.h>
1716 if test $ac_cv_have_decl_sys_siglist != yes; then
1717 # For Tru64, at least:
1718 AC_CHECK_DECLS([__sys_siglist], [], [], [[#include <signal.h>
1723 AC_CHECK_HEADERS_ONCE(sys/socket.h)
1724 AC_CHECK_HEADERS(net/if.h, , , [AC_INCLUDES_DEFAULT
1725 #if HAVE_SYS_SOCKET_H
1726 #include <sys/socket.h>
1728 AC_CHECK_HEADERS(ifaddrs.h, , , [AC_INCLUDES_DEFAULT
1729 #if HAVE_SYS_SOCKET_H
1730 #include <sys/socket.h>
1732 AC_CHECK_HEADERS(net/if_dl.h, , , [AC_INCLUDES_DEFAULT
1733 #if HAVE_SYS_SOCKET_H
1734 #include <sys/socket.h>
1737 dnl checks for structure members
1738 AC_CHECK_MEMBERS([struct ifreq.ifr_flags, struct ifreq.ifr_hwaddr,
1739 struct ifreq.ifr_netmask, struct ifreq.ifr_broadaddr,
1740 struct ifreq.ifr_addr,
1741 struct ifreq.ifr_addr.sa_len], , ,
1742 [AC_INCLUDES_DEFAULT
1743 #if HAVE_SYS_SOCKET_H
1744 #include <sys/socket.h>
1750 dnl Check for endianness.
1751 dnl AC_C_BIGENDIAN is done by gnulib.
1753 dnl check for Make feature
1756 AUTODEPEND_PARENTS='lib src'
1757 dnl check if we have GCC and autodepend is on.
1758 if test "$GCC" = yes && test "$ac_enable_autodepend" = yes; then
1759 AC_MSG_CHECKING([whether gcc understands -MMD -MF])
1760 SAVE_CFLAGS="$CFLAGS"
1761 CFLAGS="$CFLAGS -MMD -MF deps.d -MP"
1762 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[]], [[]])], , ac_enable_autodepend=no)
1763 CFLAGS="$SAVE_CFLAGS"
1764 test -f deps.d || ac_enable_autodepend=no
1766 AC_MSG_RESULT([$ac_enable_autodepend])
1767 if test $ac_enable_autodepend = yes; then
1771 AC_SUBST(AUTO_DEPEND)
1773 dnl checks for operating system services
1774 AC_SYS_LONG_FILE_NAMES
1776 #### Choose a window system.
1778 ## We leave window_system equal to none if
1779 ## we end up building without one. Any new window system should
1780 ## set window_system to an appropriate value and add objects to
1781 ## window-system-specific substs.
1785 if test "$no_x" != yes; then
1789 LD_SWITCH_X_SITE_RPATH=
1790 if test "${x_libraries}" != NONE; then
1791 if test -n "${x_libraries}"; then
1792 LD_SWITCH_X_SITE=-L`AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -L/g'`
1793 LD_SWITCH_X_SITE_RPATH=-Wl,-rpath,`
1794 AS_ECHO(["$x_libraries"]) | sed -e 's/:/ -Wl,-rpath,/g'
1797 x_default_search_path=""
1798 x_search_path=${x_libraries}
1799 if test -z "${x_search_path}"; then
1800 x_search_path=/usr/lib
1802 for x_library in `AS_ECHO(["$x_search_path:"]) | \
1803 sed -e "s/:/ /g" -e p -e "s:/lib[[^ /]]* :/share :g"`; do
1805 ${x_library}/X11/%L/%T/%N%C%S:\
1806 ${x_library}/X11/%l/%T/%N%C%S:\
1807 ${x_library}/X11/%T/%N%C%S:\
1808 ${x_library}/X11/%L/%T/%N%S:\
1809 ${x_library}/X11/%l/%T/%N%S:\
1810 ${x_library}/X11/%T/%N%S"
1811 if test x"${x_default_search_path}" = x; then
1812 x_default_search_path=${x_search_path}
1814 x_default_search_path="${x_search_path}:${x_default_search_path}"
1818 AC_SUBST(LD_SWITCH_X_SITE_RPATH)
1820 if test "${x_includes}" != NONE && test -n "${x_includes}"; then
1821 C_SWITCH_X_SITE=$isystem`AS_ECHO(["$x_includes"]) | sed -e "s/:/ $isystem/g"`
1824 if test x"${x_includes}" = x; then
1825 bitmapdir=/usr/include/X11/bitmaps
1827 # accumulate include directories that have X11 bitmap subdirectories
1829 for bmd in `AS_ECHO(["$x_includes"]) | sed -e 's/:/ /g'`; do
1830 if test -d "${bmd}/X11/bitmaps"; then
1831 bmd_acc="${bmd_acc}:${bmd}/X11/bitmaps"
1833 if test -d "${bmd}/bitmaps"; then
1834 bmd_acc="${bmd_acc}:${bmd}/bitmaps"
1837 bitmapdir=${bmd_acc#:}
1840 test "${with_ns}" = maybe && test "${opsys}" != darwin && with_ns=no
1842 NS_GNUSTEP_CONFIG=no
1845 tmp_CPPFLAGS="$CPPFLAGS"
1846 tmp_CFLAGS="$CFLAGS"
1847 CPPFLAGS="$CPPFLAGS -x objective-c"
1848 CFLAGS="$CFLAGS -x objective-c"
1851 if test "${with_ns}" != no; then
1852 if test "${opsys}" = darwin; then
1854 ns_appdir=`pwd`/nextstep/Emacs.app
1855 ns_appbindir=${ns_appdir}/Contents/MacOS
1856 ns_appresdir=${ns_appdir}/Contents/Resources
1857 ns_appsrc=Cocoa/Emacs.base
1858 ns_fontfile=macfont.o
1859 elif flags=$( (gnustep-config --objc-flags) 2>/dev/null); then
1861 NS_GNUSTEP_CONFIG=yes
1862 GNU_OBJC_CFLAGS=$flags
1863 LIBS_GNUSTEP=$(gnustep-config --gui-libs) || exit
1864 elif test -f $GNUSTEP_CONFIG_FILE; then
1866 dnl FIXME sourcing this several times in subshells seems inefficient.
1867 GNUSTEP_SYSTEM_HEADERS=$(
1868 . $GNUSTEP_CONFIG_FILE
1869 AS_ECHO(["$GNUSTEP_SYSTEM_HEADERS"])
1871 GNUSTEP_SYSTEM_LIBRARIES=$(
1872 . $GNUSTEP_CONFIG_FILE
1873 AS_ECHO(["$GNUSTEP_SYSTEM_LIBRARIES"])
1875 dnl I seemed to need these as well with GNUstep-startup 0.25.
1876 GNUSTEP_LOCAL_HEADERS=$(
1877 . $GNUSTEP_CONFIG_FILE
1878 AS_ECHO(["$GNUSTEP_LOCAL_HEADERS"])
1880 GNUSTEP_LOCAL_LIBRARIES=$(
1881 . $GNUSTEP_CONFIG_FILE
1882 AS_ECHO(["$GNUSTEP_LOCAL_LIBRARIES"])
1884 test "x${GNUSTEP_LOCAL_HEADERS}" != "x" && \
1885 GNUSTEP_LOCAL_HEADERS="-I${GNUSTEP_LOCAL_HEADERS}"
1886 test "x${GNUSTEP_LOCAL_LIBRARIES}" != "x" && \
1887 GNUSTEP_LOCAL_LIBRARIES="-L${GNUSTEP_LOCAL_LIBRARIES}"
1888 CPPFLAGS="$CPPFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1889 CFLAGS="$CFLAGS -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
1890 LDFLAGS="$LDFLAGS -L${GNUSTEP_SYSTEM_LIBRARIES} ${GNUSTEP_LOCAL_LIBRARIES}"
1891 LIBS_GNUSTEP="-lgnustep-gui -lgnustep-base -lobjc -lpthread"
1892 dnl GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS to 0 or 1.
1893 dnl If they had chosen to either define it or not, we could have
1894 dnl just used AC_CHECK_DECL here.
1895 AC_CACHE_CHECK(if GNUstep defines BASE_NATIVE_OBJC_EXCEPTIONS,
1896 emacs_cv_objc_exceptions,
1897 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <GNUstepBase/GSConfig.h>]],
1898 [[#if defined BASE_NATIVE_OBJC_EXCEPTIONS && BASE_NATIVE_OBJC_EXCEPTIONS > 0
1902 #endif]])], emacs_cv_objc_exceptions=yes, emacs_cv_objc_exceptions=no ) )
1903 if test $emacs_cv_objc_exceptions = yes; then
1904 dnl _NATIVE_OBJC_EXCEPTIONS is used by the GNUstep headers.
1905 AC_DEFINE(_NATIVE_OBJC_EXCEPTIONS, 1,
1906 [Define if GNUstep uses ObjC exceptions.])
1907 GNU_OBJC_CFLAGS="-fobjc-exceptions"
1910 if test $NS_IMPL_GNUSTEP = yes; then
1911 ns_appdir=`pwd`/nextstep/Emacs.app
1912 ns_appbindir=${ns_appdir}
1913 ns_appresdir=${ns_appdir}/Resources
1914 ns_appsrc=GNUstep/Emacs.base
1915 ns_fontfile=nsfont.o
1918 dnl This is only used while we test the NS headers, it gets reset below.
1919 CPPFLAGS="$CPPFLAGS $GNU_OBJC_CFLAGS"
1920 CFLAGS="$CFLAGS $GNU_OBJC_CFLAGS"
1922 AC_CHECK_HEADER([AppKit/AppKit.h], [HAVE_NS=yes],
1923 [AC_MSG_ERROR([The include files (AppKit/AppKit.h etc) that
1924 are required for a Nextstep build are missing or cannot be compiled.
1925 Either fix this, or re-configure with the option '--without-ns'.])])
1928 if test "${NS_IMPL_COCOA}" = "yes"; then
1929 AC_MSG_CHECKING([for Mac OS X 10.6 or newer])
1930 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([#include <AppKit/AppKit.h>],
1932 #ifdef MAC_OS_X_VERSION_MAX_ALLOWED
1933 #if MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
1936 error "Mac OS X 10.6 or newer required";
1940 ns_osx_have_106=yes,
1942 AC_MSG_RESULT([$ns_osx_have_106])
1944 if test $ns_osx_have_106 = no; then
1945 AC_MSG_ERROR([Mac OS X 10.6 or newer is required]);
1950 AC_SUBST(LIBS_GNUSTEP)
1952 INSTALL_ARCH_INDEP_EXTRA=install-etc
1953 ns_self_contained=no
1956 if test "${HAVE_NS}" = yes; then
1957 if test "$with_toolkit_scroll_bars" = "no"; then
1958 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for Nextstep.])
1961 window_system=nextstep
1962 # set up packaging dirs
1963 if test "${EN_NS_SELF_CONTAINED}" = yes; then
1964 ns_self_contained=yes
1965 prefix=${ns_appresdir}
1966 exec_prefix=${ns_appbindir}
1967 dnl This one isn't really used, only archlibdir is.
1968 libexecdir="\${ns_appbindir}/libexec"
1969 archlibdir="\${ns_appbindir}/libexec"
1970 etcdocdir="\${ns_appresdir}/etc"
1971 etcdir="\${ns_appresdir}/etc"
1972 dnl FIXME maybe set datarootdir instead.
1973 dnl That would also get applications, icons, man.
1974 infodir="\${ns_appresdir}/info"
1975 mandir="\${ns_appresdir}/man"
1976 lispdir="\${ns_appresdir}/lisp"
1977 test "$locallisppathset" = no && locallisppath=""
1978 INSTALL_ARCH_INDEP_EXTRA=
1981 NS_OBJC_OBJ="nsterm.o nsfns.o nsmenu.o nsselect.o nsimage.o $ns_fontfile"
1983 CFLAGS="$tmp_CFLAGS"
1984 CPPFLAGS="$tmp_CPPFLAGS"
1985 AC_SUBST(INSTALL_ARCH_INDEP_EXTRA)
1986 AC_SUBST(ns_self_contained)
1988 AC_SUBST(NS_OBJC_OBJ)
1990 if test "${HAVE_NS}" = yes; then
1992 [if the Objective C compiler supports instancetype],
1993 [emacs_cv_objc_instancetype],
1994 [AC_LANG_PUSH([Objective C])
1996 [AC_LANG_SOURCE([[@interface Test
1997 + (instancetype)test;
1999 emacs_cv_objc_instancetype=yes,
2000 emacs_cv_objc_instancetype=no)
2001 AC_LANG_POP([Objective C])])
2003 if test x$emacs_cv_objc_instancetype = xyes ; then
2004 AC_DEFINE(NATIVE_OBJC_INSTANCETYPE, 1,
2005 [Define if ObjC compiler supports instancetype natively.])
2017 if test "${with_w32}" != no; then
2020 AC_CHECK_HEADER([windows.h], [HAVE_W32=yes],
2021 [AC_MSG_ERROR(['--with-w32' was specified, but windows.h
2022 cannot be found.])])
2025 ## Using --with-w32 with MinGW is a no-op, but we allow it.
2028 AC_MSG_ERROR([Using w32 with an autotools build is only supported for Cygwin and MinGW32.])
2033 if test "${opsys}" = "mingw32"; then
2034 AC_MSG_CHECKING([whether Windows API headers are recent enough])
2035 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2036 #include <windows.h>
2037 #include <usp10.h>]],
2038 [[PIMAGE_NT_HEADERS pHeader;
2039 PIMAGE_SECTION_HEADER pSection = IMAGE_FIRST_SECTION(pHeader)]])],
2040 [emacs_cv_w32api=yes
2043 AC_MSG_RESULT($emacs_cv_w32api)
2044 if test "${emacs_cv_w32api}" = "no"; then
2045 AC_MSG_ERROR([the Windows API headers are too old to support this build.])
2056 if test "${HAVE_W32}" = "yes"; then
2057 AC_DEFINE(HAVE_NTGUI, 1, [Define to use native MS Windows GUI.])
2058 if test "$with_toolkit_scroll_bars" = "no"; then
2059 AC_MSG_ERROR([Non-toolkit scroll bars are not implemented for w32 build.])
2061 AC_CHECK_TOOL(WINDRES, [windres],
2062 [AC_MSG_ERROR([No resource compiler found.])])
2063 W32_OBJ="w32fns.o w32menu.o w32reg.o w32font.o w32term.o"
2064 W32_OBJ="$W32_OBJ w32xfns.o w32select.o w32uniscribe.o"
2065 EMACSRES="emacs.res"
2066 case "$canonical" in
2067 x86_64-*-*) EMACS_MANIFEST="emacs-x64.manifest" ;;
2068 *) EMACS_MANIFEST="emacs-x86.manifest" ;;
2070 dnl Construct something of the form "24,4,0,0" with 4 components.
2071 comma_version=`echo "${PACKAGE_VERSION}.0.0" | sed -e 's/\./,/g' -e 's/^\([[^,]]*,[[^,]]*,[[^,]]*,[[^,]]*\).*/\1/'`
2073 comma_space_version=`echo "$comma_version" | sed 's/,/, /g'`
2074 AC_SUBST(comma_version)
2075 AC_SUBST(comma_space_version)
2076 AC_CONFIG_FILES([nt/emacs.rc nt/emacsclient.rc])
2077 if test "${opsys}" = "cygwin"; then
2078 W32_LIBS="$W32_LIBS -lkernel32 -luser32 -lgdi32 -lole32 -lcomdlg32"
2079 W32_LIBS="$W32_LIBS -lusp10 -lcomctl32 -lwinspool"
2080 # Tell the linker that emacs.res is an object (which we compile from
2081 # the rc file), not a linker script.
2082 W32_RES_LINK="-Wl,emacs.res"
2084 W32_OBJ="$W32_OBJ w32.o w32console.o w32heap.o w32inevt.o w32proc.o"
2085 W32_LIBS="$W32_LIBS -lwinmm -lgdi32 -lcomdlg32"
2086 W32_LIBS="$W32_LIBS -lmpr -lwinspool -lole32 -lcomctl32 -lusp10"
2087 W32_RES_LINK="\$(EMACSRES)"
2088 CLIENTRES="emacsclient.res"
2089 CLIENTW="emacsclientw\$(EXEEXT)"
2090 FIRSTFILE_OBJ=firstfile.o
2093 LIBS_ECLIENT="-lcomctl32"
2094 LIB_WSOCK32="-lwsock32"
2095 NTLIB="ntlib.$ac_objext"
2096 XARGS_LIMIT="-s 10000"
2102 AC_SUBST(EMACS_MANIFEST)
2105 AC_SUBST(W32_RES_LINK)
2106 AC_SUBST(FIRSTFILE_OBJ)
2109 AC_SUBST(LIBS_ECLIENT)
2110 AC_SUBST(LIB_WSOCK32)
2112 AC_SUBST(XARGS_LIMIT)
2114 if test "${HAVE_W32}" = "yes"; then
2119 ## $window_system is now set to the window system we will
2127 case "${window_system}" in
2132 case "${with_x_toolkit}" in
2133 athena | lucid ) USE_X_TOOLKIT=LUCID ;;
2134 motif ) USE_X_TOOLKIT=MOTIF ;;
2136 term_header=gtkutil.h
2137 dnl Don't set this for GTK. A lot of tests below assumes Xt when
2138 dnl USE_X_TOOLKIT is set.
2139 USE_X_TOOLKIT=none ;;
2140 gtk2 ) with_gtk2=yes
2141 term_header=gtkutil.h
2142 USE_X_TOOLKIT=none ;;
2143 gtk3 ) with_gtk3=yes
2144 term_header=gtkutil.h
2145 USE_X_TOOLKIT=none ;;
2146 no ) USE_X_TOOLKIT=none ;;
2147 dnl If user did not say whether to use a toolkit, make this decision later:
2148 dnl use the toolkit if we have gtk, or X11R5 or newer.
2149 * ) USE_X_TOOLKIT=maybe ;;
2153 term_header=nsterm.h
2156 term_header=w32term.h
2160 if test "$window_system" = none && test "X$with_x" != "Xno"; then
2161 AC_CHECK_PROG(HAVE_XSERVER, X, true, false)
2162 if test "$HAVE_XSERVER" = true ||
2163 test -n "$DISPLAY" ||
2165 for emacs_libX11 in /usr/lib/libX11.*; do break; done
2166 test "$emacs_libX11" != '/usr/lib/libX11.*'
2169 AC_MSG_ERROR([You seem to be running X, but no X development libraries
2170 were found. You should install the relevant development files for X
2171 and for the toolkit you want, such as Gtk+ or Motif. Also make
2172 sure you have development files for image handling, i.e.
2173 tiff, gif, jpeg, png and xpm.
2174 If you are sure you want Emacs compiled without X window support, pass
2180 # Does the opsystem file prohibit the use of the GNU malloc?
2181 # Assume not, until told otherwise.
2185 [whether malloc is Doug Lea style],
2186 [emacs_cv_var_doug_lea_malloc],
2187 [emacs_cv_var_doug_lea_malloc=no
2188 dnl Hooks do not work with address sanitization.
2189 if test "$emacs_cv_sanitize_address" != yes; then
2192 [[#include <malloc.h>
2193 static void hook (void) {}]],
2194 [[malloc_set_state (malloc_get_state ());
2195 __after_morecore_hook = hook;
2196 __malloc_initialize_hook = hook;]])],
2197 [emacs_cv_var_doug_lea_malloc=yes])
2199 doug_lea_malloc=$emacs_cv_var_doug_lea_malloc
2204 test "$CANNOT_DUMP" = yes ||
2206 ## darwin ld insists on the use of malloc routines in the System framework.
2207 darwin | mingw32 | nacl | sol2-10) ;;
2208 cygwin) hybrid_malloc=yes
2210 *) test "$ac_cv_func_sbrk" = yes && system_malloc=$emacs_cv_sanitize_address;;
2213 if test "${system_malloc}" != yes && test "${doug_lea_malloc}" != yes \
2214 && test "${UNEXEC_OBJ}" = unexelf.o; then
2220 if test "${system_malloc}" = "yes"; then
2221 AC_DEFINE([SYSTEM_MALLOC], 1,
2222 [Define to 1 to use the system memory allocator, even if it is not
2226 (The GNU allocators don't work with this system configuration.)"
2228 elif test "$hybrid_malloc" = yes; then
2229 AC_DEFINE(HYBRID_MALLOC, 1,
2230 [Define to use gmalloc before dumping and the system malloc after.])
2233 GNU_MALLOC_reason=" (only before dumping)"
2234 GMALLOC_OBJ=gmalloc.o
2237 test "$doug_lea_malloc" != "yes" && GMALLOC_OBJ=gmalloc.o
2238 VMLIMIT_OBJ=vm-limit.o
2240 AC_CHECK_HEADERS([sys/vlimit.h])
2241 AC_CACHE_CHECK([for data_start], [emacs_cv_data_start],
2244 [[extern char data_start[]; char ch;]],
2245 [[return data_start < &ch;]])],
2246 [emacs_cv_data_start=yes],
2247 [emacs_cv_data_start=no])])
2248 if test $emacs_cv_data_start = yes; then
2249 AC_DEFINE([HAVE_DATA_START], 1,
2250 [Define to 1 if data_start is the address of the start
2251 of the main data segment.])
2254 AC_SUBST([HYBRID_MALLOC])
2255 AC_SUBST(GMALLOC_OBJ)
2256 AC_SUBST(VMLIMIT_OBJ)
2258 if test "$doug_lea_malloc" = "yes" && test "$hybrid_malloc" != yes; then
2259 if test "$GNU_MALLOC" = yes ; then
2261 (Using Doug Lea's new malloc from the GNU C Library.)"
2263 AC_DEFINE(DOUG_LEA_MALLOC, 1,
2264 [Define to 1 if the system memory allocator is Doug Lea style,
2265 with malloc hooks and malloc_set_state.])
2267 ## Use mmap directly for allocating larger buffers.
2268 ## FIXME this comes from src/s/{gnu,gnu-linux}.h:
2269 ## #ifdef DOUG_LEA_MALLOC; #undef REL_ALLOC; #endif
2270 ## Does the AC_FUNC_MMAP test below make this check unnecessary?
2272 mingw32|gnu*) REL_ALLOC=no ;;
2276 if test x"${REL_ALLOC}" = x; then
2277 REL_ALLOC=${GNU_MALLOC}
2280 use_mmap_for_buffers=no
2282 mingw32) use_mmap_for_buffers=yes ;;
2286 if test $use_mmap_for_buffers = yes; then
2287 AC_DEFINE(USE_MMAP_FOR_BUFFERS, 1, [Define to use mmap to allocate buffer text.])
2291 LIBS="$LIBS_SYSTEM $LIBS"
2293 dnl FIXME replace main with a function we actually want from this library.
2294 AC_CHECK_LIB(Xbsd, main, LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -lXbsd")
2296 dnl Check for the POSIX thread library.
2298 AC_CHECK_HEADERS_ONCE(pthread.h)
2299 if test "$ac_cv_header_pthread_h" && test "$opsys" != "mingw32"; then
2300 AC_CACHE_CHECK([for pthread library],
2301 [emacs_cv_pthread_lib],
2302 [emacs_cv_pthread_lib=no
2304 for emacs_pthread_lib in 'none needed' -lpthread; do
2305 case $emacs_pthread_lib in
2306 -*) LIBS="$OLD_LIBS $emacs_pthread_lib";;
2310 [[#include <pthread.h>
2312 sigset_t old_mask, new_mask;
2313 void noop (void) {}]],
2314 [[pthread_t th = pthread_self ();
2316 status += pthread_create (&th, 0, 0, 0);
2317 status += pthread_sigmask (SIG_BLOCK, &new_mask, &old_mask);
2318 status += pthread_kill (th, 0);
2319 #if ! (defined SYSTEM_MALLOC || defined HYBRID_MALLOC \
2320 || defined DOUG_LEA_MALLOC)
2321 /* Test for pthread_atfork only if gmalloc uses it,
2322 as older-style hosts like MirBSD 10 lack it. */
2323 status += pthread_atfork (noop, noop, noop);
2326 [emacs_cv_pthread_lib=$emacs_pthread_lib])
2328 if test "$emacs_cv_pthread_lib" != no; then
2332 if test "$emacs_cv_pthread_lib" != no; then
2333 AC_DEFINE([HAVE_PTHREAD], 1, [Define to 1 if you have POSIX threads.])
2334 case $emacs_cv_pthread_lib in
2335 -*) LIB_PTHREAD=$emacs_cv_pthread_lib;;
2337 ac_cv_func_pthread_sigmask=yes
2338 # Some systems optimize for single-threaded programs by default, and
2339 # need special flags to disable these optimizations. For example, the
2340 # definition of 'errno' in <errno.h>.
2343 AC_DEFINE([_REENTRANT], 1,
2344 [Define to 1 if your system requires this in multithreaded code.]);;
2346 AC_DEFINE([_THREAD_SAFE], 1,
2347 [Define to 1 if your system requires this in multithreaded code.]);;
2351 AC_SUBST([LIB_PTHREAD])
2353 AC_MSG_CHECKING([for thread support])
2355 if test "$with_threads" = yes; then
2356 if test "$emacs_cv_pthread_lib" != no; then
2357 AC_DEFINE(THREADS_ENABLED, 1,
2358 [Define to 1 if you want elisp thread support.])
2360 elif test "${opsys}" = "mingw32"; then
2361 dnl MinGW can do native Windows threads even without pthreads
2362 AC_DEFINE(THREADS_ENABLED, 1,
2363 [Define to 1 if you want elisp thread support.])
2367 AC_MSG_RESULT([$threads_enabled])
2369 dnl Check for need for bigtoc support on IBM AIX
2373 AC_CACHE_CHECK([for -bbigtoc option], [gdb_cv_bigtoc], [
2375 yes) gdb_cv_bigtoc=-Wl,-bbigtoc ;;
2376 *) gdb_cv_bigtoc=-bbigtoc ;;
2379 LDFLAGS=$LDFLAGS\ $gdb_cv_bigtoc
2380 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[int i;]])], [], [gdb_cv_bigtoc=])
2385 # Change CFLAGS, CPPFLAGS, and LIBS temporarily so that C_SWITCH_X_SITE
2386 # is for the tests that follow. We set them back later on.
2388 REAL_CFLAGS="$CFLAGS"
2389 REAL_CPPFLAGS="$CPPFLAGS"
2392 if test "${HAVE_X11}" = "yes"; then
2393 DEFS="$C_SWITCH_X_SITE $DEFS"
2394 LDFLAGS="$LDFLAGS $LD_SWITCH_X_SITE"
2396 CFLAGS="$C_SWITCH_X_SITE $CFLAGS"
2397 CPPFLAGS="$C_SWITCH_X_SITE $CPPFLAGS"
2399 # On Solaris, arrange for LD_RUN_PATH to point to the X libraries for tests.
2400 # This is handled by LD_SWITCH_X_SITE_RPATH during the real build,
2401 # but it's more convenient here to set LD_RUN_PATH since this
2402 # also works on hosts that don't understand LD_SWITCH_X_SITE_RPATH.
2403 if test "${x_libraries}" != NONE && test -n "${x_libraries}"; then
2404 LD_RUN_PATH=$x_libraries${LD_RUN_PATH+:}$LD_RUN_PATH
2408 if test "${opsys}" = "gnu-linux"; then
2409 AC_MSG_CHECKING(whether X on GNU/Linux needs -b to link)
2410 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2411 [[XOpenDisplay ("foo");]])],
2412 [xgnu_linux_first_failure=no],
2413 [xgnu_linux_first_failure=yes])
2414 if test "${xgnu_linux_first_failure}" = "yes"; then
2415 OLD_CPPFLAGS="$CPPFLAGS"
2417 CPPFLAGS="$CPPFLAGS -b i486-linuxaout"
2418 LIBS="$LIBS -b i486-linuxaout"
2419 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],
2420 [[XOpenDisplay ("foo");]])],
2421 [xgnu_linux_second_failure=no],
2422 [xgnu_linux_second_failure=yes])
2423 if test "${xgnu_linux_second_failure}" = "yes"; then
2424 # If we get the same failure with -b, there is no use adding -b.
2425 # So leave it out. This plays safe.
2428 LD_SWITCH_X_SITE="$LD_SWITCH_X_SITE -b i486-linuxaout"
2429 C_SWITCH_X_SITE="$C_SWITCH_X_SITE -b i486-linuxaout"
2432 CPPFLAGS=$OLD_CPPFLAGS
2439 # Reportedly, some broken Solaris systems have XKBlib.h but are missing
2440 # header files included from there.
2441 AC_MSG_CHECKING(for Xkb)
2442 AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>
2443 #include <X11/XKBlib.h>]],
2444 [[XkbDescPtr kb = XkbGetKeyboard (0, XkbAllComponentsMask, XkbUseCoreKbd);]])],
2445 emacs_xkb=yes, emacs_xkb=no)
2446 AC_MSG_RESULT($emacs_xkb)
2447 if test $emacs_xkb = yes; then
2448 AC_DEFINE(HAVE_XKB, 1, [Define to 1 if you have the Xkb extension.])
2451 AC_CHECK_FUNCS(XrmSetDatabase XScreenResourceString \
2452 XScreenNumberOfScreen)
2455 if test "${window_system}" = "x11"; then
2456 AC_MSG_CHECKING(X11 version 6)
2457 AC_CACHE_VAL(emacs_cv_x11_version_6,
2458 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Xlib.h>]],
2459 [[#if XlibSpecificationRelease < 6
2462 ]])], emacs_cv_x11_version_6=yes, emacs_cv_x11_version_6=no)])
2463 if test $emacs_cv_x11_version_6 = yes; then
2464 AC_MSG_RESULT(6 or newer)
2465 AC_DEFINE(HAVE_X11R6, 1,
2466 [Define to 1 if you have the X11R6 or newer version of Xlib.])
2467 AC_DEFINE(HAVE_X_I18N, 1, [Define if you have usable i18n support.])
2468 ## inoue@ainet.or.jp says Solaris has a bug related to X11R6-style
2472 *) AC_DEFINE(HAVE_X11R6_XIM, 1,
2473 [Define if you have usable X11R6-style XIM support.])
2477 AC_MSG_RESULT(before 6)
2482 ### Use -lrsvg-2 if available, unless '--with-rsvg=no' is specified.
2484 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${opsys}" = "mingw32"; then
2485 if test "${with_rsvg}" != "no"; then
2486 RSVG_REQUIRED=2.11.0
2487 RSVG_MODULE="librsvg-2.0 >= $RSVG_REQUIRED"
2489 EMACS_CHECK_MODULES([RSVG], [$RSVG_MODULE])
2490 AC_SUBST(RSVG_CFLAGS)
2493 if test $HAVE_RSVG = yes; then
2494 AC_DEFINE(HAVE_RSVG, 1, [Define to 1 if using librsvg.])
2495 CFLAGS="$CFLAGS $RSVG_CFLAGS"
2496 # Windows loads librsvg dynamically
2497 if test "${opsys}" = "mingw32"; then
2505 if test "${HAVE_X11}" = "yes" || test "${HAVE_NS}" = "yes" || test "${HAVE_W32}" = "yes"; then
2506 if test "${with_imagemagick}" != "no"; then
2507 ## 6.3.5 is the earliest version known to work; see Bug#17339.
2508 ## 6.8.2 makes Emacs crash; see Bug#13867.
2509 IMAGEMAGICK_MODULE="Wand >= 6.3.5 Wand != 6.8.2"
2510 EMACS_CHECK_MODULES([IMAGEMAGICK], [$IMAGEMAGICK_MODULE])
2512 if test $HAVE_IMAGEMAGICK = yes; then
2515 CFLAGS="$CFLAGS $IMAGEMAGICK_CFLAGS"
2516 LIBS="$IMAGEMAGICK_LIBS $LIBS"
2517 AC_CHECK_FUNCS([MagickRelinquishMemory MagickExportImagePixels \
2518 MagickMergeImageLayers MagickAutoOrientImage])
2521 # Check that ImageMagick links. It does not link on Fedora 25
2522 # with './configure CC=clang', as pkg-config outputs flags like
2523 # -lomp that work for GCC but not Clang.
2524 if test "$ac_cv_func_MagickRelinquishMemory" != yes; then
2528 if test $HAVE_IMAGEMAGICK = yes; then
2529 AC_DEFINE([HAVE_IMAGEMAGICK], 1, [Define to 1 if using ImageMagick.])
2534 AC_SUBST([IMAGEMAGICK_CFLAGS])
2535 AC_SUBST([IMAGEMAGICK_LIBS])
2539 AC_CHECK_LIB(anl, getaddrinfo_a, HAVE_GETADDRINFO_A=yes)
2540 if test "${HAVE_GETADDRINFO_A}" = "yes"; then
2541 AC_DEFINE(HAVE_GETADDRINFO_A, 1,
2542 [Define to 1 if you have getaddrinfo_a for asynchronous DNS resolution.])
2543 GETADDRINFO_A_LIBS="-lanl"
2544 AC_SUBST(GETADDRINFO_A_LIBS)
2549 gtk_term_header=$term_header
2552 if test "${opsys}" != "mingw32"; then
2553 if test "${with_gtk3}" = "yes" || test "${with_gtk}" = "yes" || test "$USE_X_TOOLKIT" = "maybe"; then
2556 GTK_MODULES="gtk+-3.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2558 dnl Checks for libraries.
2559 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2560 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2561 if test "$pkg_check_gtk" = "no" && test "$with_gtk3" = "yes"; then
2562 AC_MSG_ERROR($GTK_PKG_ERRORS)
2564 if test "$pkg_check_gtk" = "yes"; then
2565 AC_DEFINE(HAVE_GTK3, 1, [Define to 1 if using GTK 3 or later.])
2566 GTK_OBJ=emacsgtkfixed.o
2567 gtk_term_header=gtkutil.h
2568 USE_GTK_TOOLKIT="GTK3"
2569 if test "x$ac_enable_gtk_deprecation_warnings" = x; then
2570 AC_DEFINE([GDK_DISABLE_DEPRECATION_WARNINGS], [1],
2571 [Define to 1 to disable GTK+/GDK deprecation warnings.])
2572 AC_DEFINE([GLIB_DISABLE_DEPRECATION_WARNINGS], [1],
2573 [Define to 1 to disable Glib deprecation warnings.])
2577 gtk3_pkg_errors="$GTK_PKG_ERRORS "
2581 if test "${with_gtk2}" = "yes" || test "$check_gtk2" = "yes"; then
2584 GTK_MODULES="gtk+-2.0 >= $GTK_REQUIRED glib-2.0 >= $GLIB_REQUIRED"
2586 dnl Checks for libraries.
2587 EMACS_CHECK_MODULES([GTK], [$GTK_MODULES],
2588 [pkg_check_gtk=yes], [pkg_check_gtk=no])
2589 if test "$pkg_check_gtk" = "no" &&
2590 { test "$with_gtk" = yes || test "$with_gtk2" = "yes"; }
2592 AC_MSG_ERROR($gtk3_pkg_errors$GTK_PKG_ERRORS)
2594 test "$pkg_check_gtk" = "yes" && USE_GTK_TOOLKIT="GTK2"
2601 if test x"$pkg_check_gtk" = xyes; then
2604 CFLAGS="$CFLAGS $GTK_CFLAGS"
2605 LIBS="$GTK_LIBS $LIBS"
2606 dnl Try to compile a simple GTK program.
2607 AC_MSG_CHECKING([whether GTK compiles])
2611 [[/* Check the Gtk and Glib APIs. */
2612 #include <gtk/gtk.h>
2613 #include <glib-object.h>
2615 callback (GObject *go, GParamSpec *spec, gpointer user_data)
2619 GtkSettings *gs = 0;
2620 /* Use G_CALLBACK to make sure function pointers can be cast to void *;
2621 strict C prohibits this. Use gtk_main_iteration to test that the
2622 libraries are there. */
2623 if (g_signal_handler_find (G_OBJECT (gs), G_SIGNAL_MATCH_FUNC,
2624 0, 0, 0, G_CALLBACK (callback), 0))
2625 gtk_main_iteration ();
2628 AC_MSG_RESULT([$GTK_COMPILES])
2629 if test "${GTK_COMPILES}" != "yes"; then
2631 if test "$USE_X_TOOLKIT" != "maybe"; then
2632 AC_MSG_ERROR([Gtk+ wanted, but it does not compile, see config.log. Maybe some x11-devel files missing?]);
2635 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $GTK_CFLAGS"
2637 AC_DEFINE(USE_GTK, 1, [Define to 1 if using GTK.])
2638 GTK_OBJ="gtkutil.o $GTK_OBJ"
2639 term_header=$gtk_term_header
2641 AC_MSG_WARN([[Your version of Gtk+ will have problems with
2642 closing open displays. This is no problem if you just use
2643 one display, but if you use more than one and close one of them
2645 See http://bugzilla.gnome.org/show_bug.cgi?id=85715]])
2653 if test "${HAVE_GTK}" = "yes"; then
2655 dnl GTK scrollbars resemble toolkit scrollbars a lot, so to avoid
2656 dnl a lot if #ifdef:s, say we have toolkit scrollbars.
2657 if test "$with_toolkit_scroll_bars" != no; then
2658 with_toolkit_scroll_bars=yes
2661 dnl Check if we have the old file selection dialog declared and
2662 dnl in the link library. In 2.x it may be in the library,
2663 dnl but not declared if deprecated featured has been selected out.
2664 dnl AC_CHECK_DECL checks for a macro, so check for GTK_TYPE_FILE_SELECTION.
2665 HAVE_GTK_FILE_SELECTION=no
2666 AC_CHECK_DECL(GTK_TYPE_FILE_SELECTION, HAVE_GTK_FILE_SELECTION=yes,
2667 HAVE_GTK_FILE_SELECTION=no, [AC_INCLUDES_DEFAULT
2668 #include <gtk/gtk.h>])
2669 if test "$HAVE_GTK_FILE_SELECTION" = yes; then
2670 AC_CHECK_FUNCS(gtk_file_selection_new)
2673 dnl Same as above for gtk_handle_box.
2674 HAVE_GTK_HANDLE_BOX=no
2675 AC_CHECK_DECL(GTK_TYPE_HANDLE_BOX, HAVE_GTK_HANDLE_BOX=yes,
2676 HAVE_GTK_HANDLE_BOX=no, [AC_INCLUDES_DEFAULT
2677 #include <gtk/gtk.h>])
2678 if test "$HAVE_GTK_HANDLE_BOX" = yes; then
2679 AC_CHECK_FUNCS(gtk_handle_box_new)
2682 dnl Same as above for gtk_tearoff_menu_item.
2683 HAVE_GTK_TEAROFF_MENU_ITEM=no
2684 AC_CHECK_DECL(GTK_TYPE_TEAROFF_MENU_ITEM, HAVE_GTK_TEAROFF_MENU_ITEM=yes,
2685 HAVE_GTK_TEAROFF_MENU_ITEM=no, [AC_INCLUDES_DEFAULT
2686 #include <gtk/gtk.h>])
2687 if test "$HAVE_GTK_TEAROFF_MENU_ITEM" = yes; then
2688 AC_CHECK_FUNCS(gtk_tearoff_menu_item_new)
2691 dnl Check for functions introduced in 2.14 and later.
2692 AC_CHECK_FUNCS(gtk_widget_get_window gtk_widget_set_has_window \
2693 gtk_dialog_get_action_area gtk_widget_get_sensitive \
2694 gtk_widget_get_mapped gtk_adjustment_get_page_size \
2695 gtk_orientable_set_orientation \
2696 gtk_window_set_has_resize_grip)
2698 term_header=gtkutil.h
2702 dnl Enable xwidgets if GTK3 and WebKitGTK+ are available.
2705 if test "$with_xwidgets" != "no"; then
2706 test "$USE_GTK_TOOLKIT" = "GTK3" && test "$window_system" != "none" ||
2707 AC_MSG_ERROR([xwidgets requested but gtk3 not used.])
2709 WEBKIT_REQUIRED=2.12
2710 WEBKIT_MODULES="webkit2gtk-4.0 >= $WEBKIT_REQUIRED"
2711 EMACS_CHECK_MODULES([WEBKIT], [$WEBKIT_MODULES])
2712 HAVE_XWIDGETS=$HAVE_WEBKIT
2713 test $HAVE_XWIDGETS = yes ||
2714 AC_MSG_ERROR([xwidgets requested but WebKitGTK+ not found.])
2716 XWIDGETS_OBJ=xwidget.o
2717 AC_DEFINE([HAVE_XWIDGETS], 1, [Define to 1 if you have xwidgets support.])
2719 AC_SUBST(XWIDGETS_OBJ)
2724 dnl D-Bus has been tested under GNU/Linux only. Must be adapted for
2725 dnl other platforms.
2728 if test "${with_dbus}" = "yes"; then
2729 EMACS_CHECK_MODULES([DBUS], [dbus-1 >= 1.0])
2730 if test "$HAVE_DBUS" = yes; then
2731 AC_DEFINE(HAVE_DBUS, 1, [Define to 1 if using D-Bus.])
2732 dnl dbus_watch_get_unix_fd has been introduced in D-Bus 1.1.1.
2733 dnl dbus_type_is_valid and dbus_validate_* have been introduced in
2736 LIBS="$LIBS $DBUS_LIBS"
2737 AC_CHECK_FUNCS(dbus_watch_get_unix_fd \
2738 dbus_type_is_valid \
2739 dbus_validate_bus_name \
2740 dbus_validate_path \
2741 dbus_validate_interface \
2742 dbus_validate_member)
2747 AC_SUBST(DBUS_CFLAGS)
2751 dnl GSettings has been tested under GNU/Linux only.
2753 if test "${HAVE_X11}" = "yes" && test "${with_gsettings}" = "yes"; then
2754 EMACS_CHECK_MODULES([GSETTINGS], [gio-2.0 >= 2.26])
2755 if test "$HAVE_GSETTINGS" = "yes"; then
2757 CFLAGS="$CFLAGS $GSETTINGS_CFLAGS"
2759 LIBS="$LIBS $GSETTINGS_LIBS"
2760 AC_MSG_CHECKING([whether GSettings is in gio])
2763 [[/* Check that gsettings really is present. */
2764 #include <glib-object.h>
2765 #include <gio/gio.h>
2768 GSettings *settings;
2769 GVariant *val = g_settings_get_value (settings, "");
2771 [], HAVE_GSETTINGS=no)
2772 AC_MSG_RESULT([$HAVE_GSETTINGS])
2774 if test "$HAVE_GSETTINGS" = "yes"; then
2775 AC_DEFINE(HAVE_GSETTINGS, 1, [Define to 1 if using GSettings.])
2776 SETTINGS_CFLAGS="$GSETTINGS_CFLAGS"
2777 SETTINGS_LIBS="$GSETTINGS_LIBS"
2784 dnl GConf has been tested under GNU/Linux only.
2785 dnl The version is really arbitrary, it is about the same age as Gtk+ 2.6.
2787 if test "${HAVE_X11}" = "yes" && test "${with_gconf}" = "yes"; then
2788 EMACS_CHECK_MODULES([GCONF], [gconf-2.0 >= 2.13])
2789 if test "$HAVE_GCONF" = yes; then
2790 AC_DEFINE(HAVE_GCONF, 1, [Define to 1 if using GConf.])
2791 dnl Newer GConf doesn't link with g_objects, so this is not defined.
2792 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GCONF_CFLAGS"
2793 SETTINGS_LIBS="$SETTINGS_LIBS $GCONF_LIBS"
2797 if test "$HAVE_GSETTINGS" = "yes" || test "$HAVE_GCONF" = "yes"; then
2798 EMACS_CHECK_MODULES([GOBJECT], [gobject-2.0 >= 2.0])
2799 if test "$HAVE_GOBJECT" = "yes"; then
2800 SETTINGS_CFLAGS="$SETTINGS_CFLAGS $GOBJECT_CFLAGS"
2801 SETTINGS_LIBS="$SETTINGS_LIBS $GOBJECT_LIBS"
2803 SAVE_CFLAGS="$CFLAGS"
2805 CFLAGS="$SETTINGS_CFLAGS $CFLAGS"
2806 LIBS="$SETTINGS_LIBS $LIBS"
2807 CFLAGS="$SAVE_CFLAGS"
2810 AC_SUBST(SETTINGS_CFLAGS)
2811 AC_SUBST(SETTINGS_LIBS)
2814 dnl SELinux is available for GNU/Linux only.
2817 if test "${with_selinux}" = "yes"; then
2818 AC_CHECK_LIB([selinux], [lgetfilecon], HAVE_LIBSELINUX=yes, HAVE_LIBSELINUX=no)
2819 if test "$HAVE_LIBSELINUX" = yes; then
2820 AC_DEFINE(HAVE_LIBSELINUX, 1, [Define to 1 if using SELinux.])
2821 LIBSELINUX_LIBS=-lselinux
2824 AC_SUBST(LIBSELINUX_LIBS)
2827 if test "${with_gnutls}" = "yes" ; then
2828 EMACS_CHECK_MODULES([LIBGNUTLS], [gnutls >= 2.12.2],
2829 [HAVE_GNUTLS=yes], [HAVE_GNUTLS=no])
2830 if test "${HAVE_GNUTLS}" = "yes"; then
2831 AC_DEFINE(HAVE_GNUTLS, 1, [Define if using GnuTLS.])
2832 EMACS_CHECK_MODULES([LIBGNUTLS3], [gnutls >= 3.0.0],
2833 [AC_DEFINE(HAVE_GNUTLS3, 1, [Define if using GnuTLS v3.])], [])
2835 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2836 #include <gnutls/gnutls.h>
2837 #include <gnutls/crypto.h>
2840 int main (int argc, char **argv)
2842 gnutls_hmac_hd_t handle;
2843 gnutls_hmac_deinit(handle, NULL);
2846 [AC_DEFINE(HAVE_GNUTLS3_HMAC, 1, [Define if using GnuTLS v3 with HMAC support.])])
2848 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2849 #include <gnutls/gnutls.h>
2850 #include <gnutls/crypto.h>
2853 int main (int argc, char **argv)
2855 gnutls_aead_cipher_hd_t handle;
2856 gnutls_aead_cipher_deinit(handle);
2859 [AC_DEFINE(HAVE_GNUTLS3_AEAD, 1, [Define if using GnuTLS v3 with AEAD support.])])
2861 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2862 #include <gnutls/gnutls.h>
2863 #include <gnutls/crypto.h>
2866 int main (int argc, char **argv)
2868 gnutls_cipher_hd_t handle;
2869 gnutls_cipher_encrypt2 (handle,
2872 gnutls_cipher_deinit(handle);
2875 [AC_DEFINE(HAVE_GNUTLS3_CIPHER, 1, [Define if using GnuTLS v3 with cipher support.])])
2877 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
2878 #include <gnutls/gnutls.h>
2879 #include <gnutls/crypto.h>
2882 int main (int argc, char **argv)
2884 gnutls_hash_hd_t handle;
2885 gnutls_hash_deinit(handle, NULL);
2888 [AC_DEFINE(HAVE_GNUTLS3_DIGEST, 1, [Define if using GnuTLS v3 with digest support.])])
2891 # Windows loads GnuTLS dynamically
2892 if test "${opsys}" = "mingw32"; then
2897 AC_SUBST(LIBGNUTLS_LIBS)
2898 AC_SUBST(LIBGNUTLS_CFLAGS)
2901 if test "${with_libsystemd}" = "yes" ; then
2902 dnl This code has been tested with libsystemd 222 and later.
2903 dnl FIXME: Find the earliest version number for which Emacs should work,
2904 dnl and change '222' to that number.
2905 EMACS_CHECK_MODULES([LIBSYSTEMD], [libsystemd >= 222],
2906 [HAVE_LIBSYSTEMD=yes], [HAVE_LIBSYSTEMD=no])
2907 if test "${HAVE_LIBSYSTEMD}" = "yes"; then
2908 AC_DEFINE(HAVE_LIBSYSTEMD, 1, [Define if using libsystemd.])
2912 AC_SUBST(LIBSYSTEMD_LIBS)
2913 AC_SUBST(LIBSYSTEMD_CFLAGS)
2918 dnl MS Windows native file monitor is available for mingw32 only.
2919 case $with_file_notification,$opsys in
2921 AC_MSG_ERROR(['--with-file-notification=w32' was specified, but
2922 this is only supported on MS-Windows native and MinGW32 builds.
2923 Consider using gfile instead.])
2925 w32,* | yes,mingw32)
2926 AC_CHECK_HEADER(windows.h)
2927 if test "$ac_cv_header_windows_h" = yes ; then
2928 AC_DEFINE(HAVE_W32NOTIFY, 1, [Define to 1 to use w32notify.])
2929 NOTIFY_OBJ=w32notify.o
2930 NOTIFY_SUMMARY="yes (w32)"
2934 dnl inotify is available only on GNU/Linux.
2935 case $with_file_notification,$NOTIFY_OBJ in
2937 AC_CHECK_HEADER(sys/inotify.h)
2938 if test "$ac_cv_header_sys_inotify_h" = yes ; then
2939 AC_CHECK_FUNC(inotify_init1)
2940 if test "$ac_cv_func_inotify_init1" = yes; then
2941 AC_DEFINE(HAVE_INOTIFY, 1, [Define to 1 to use inotify.])
2942 NOTIFY_OBJ=inotify.o
2943 NOTIFY_SUMMARY="yes -lglibc (inotify)"
2948 dnl kqueue is available on BSD-like systems.
2949 case $with_file_notification,$NOTIFY_OBJ in
2951 EMACS_CHECK_MODULES([KQUEUE], [libkqueue])
2952 if test "$HAVE_KQUEUE" = "yes"; then
2953 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2954 CPPFLAGS="$CPPFLAGS -I/usr/include/kqueue"
2955 NOTIFY_CFLAGS=$KQUEUE_CFLAGS
2956 NOTIFY_LIBS=$KQUEUE_LIBS
2958 NOTIFY_SUMMARY="yes -lkqueue"
2960 AC_SEARCH_LIBS(kqueue, [])
2961 if test "$ac_cv_search_kqueue" != no; then
2962 AC_DEFINE(HAVE_KQUEUE, 1, [Define to 1 to use kqueue.])
2964 NOTIFY_SUMMARY="yes (kqueue)"
2969 dnl g_file_monitor exists since glib 2.18. G_FILE_MONITOR_EVENT_MOVED
2970 dnl has been added in glib 2.24. It has been tested under
2972 case $with_file_notification,$NOTIFY_OBJ in
2974 if test "${HAVE_NS}" = yes; then
2975 AC_MSG_ERROR(['--with-file-notification=gfile' is not supported in NextStep builds.
2976 Consider kqueue instead.])
2978 EMACS_CHECK_MODULES([GFILENOTIFY], [gio-2.0 >= 2.24])
2979 if test "$HAVE_GFILENOTIFY" = "yes"; then
2980 AC_DEFINE(HAVE_GFILENOTIFY, 1, [Define to 1 if using GFile.])
2981 NOTIFY_CFLAGS=$GFILENOTIFY_CFLAGS
2982 NOTIFY_LIBS=$GFILENOTIFY_LIBS
2983 NOTIFY_OBJ=gfilenotify.o
2984 NOTIFY_SUMMARY="yes -lgio (gfile)"
2989 case $with_file_notification,$NOTIFY_OBJ in
2990 yes,* | no,* | *,?*) ;;
2991 *) AC_MSG_ERROR([File notification '$with_file_notification' requested but requirements not found.]) ;;
2994 if test -n "$NOTIFY_OBJ"; then
2995 AC_DEFINE(USE_FILE_NOTIFY, 1, [Define to 1 if using file notifications.])
2997 AC_SUBST(NOTIFY_CFLAGS)
2998 AC_SUBST(NOTIFY_LIBS)
2999 AC_SUBST(NOTIFY_OBJ)
3001 dnl Do not put whitespace before the #include statements below.
3002 dnl Older compilers (eg sunos4 cc) choke on it.
3005 if test x"${USE_X_TOOLKIT}" = xmaybe || test x"${USE_X_TOOLKIT}" = xLUCID; then
3006 if test "$with_xaw3d" != no; then
3007 AC_CACHE_VAL(emacs_cv_xaw3d,
3008 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
3009 #include <X11/Intrinsic.h>
3010 #include <X11/Xaw3d/Simple.h>]],
3012 [AC_CHECK_LIB(Xaw3d, XawScrollbarSetThumb,
3013 emacs_cv_xaw3d=yes, emacs_cv_xaw3d=no)],
3014 emacs_cv_xaw3d=no)])
3018 if test $emacs_cv_xaw3d = yes; then
3019 AC_MSG_CHECKING(for xaw3d)
3020 AC_MSG_RESULT([yes; using Lucid toolkit])
3024 AC_DEFINE(HAVE_XAW3D, 1,
3025 [Define to 1 if you have the Xaw3d library (-lXaw3d).])
3027 AC_MSG_CHECKING(for xaw3d)
3029 AC_MSG_CHECKING(for libXaw)
3030 AC_CACHE_VAL(emacs_cv_xaw,
3031 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[
3032 #include <X11/Intrinsic.h>
3033 #include <X11/Xaw/Simple.h>]],
3037 if test $emacs_cv_xaw = yes; then
3038 AC_MSG_RESULT([yes; using Lucid toolkit])
3041 elif test x"${USE_X_TOOLKIT}" = xLUCID; then
3042 AC_MSG_ERROR([Lucid toolkit requires X11/Xaw include files])
3044 AC_MSG_ERROR([No X toolkit could be found.
3045 If you are sure you want Emacs compiled without an X toolkit, pass
3047 to configure. Otherwise, install the development libraries for the toolkit
3048 that you want to use (e.g. Gtk+) and re-run configure.])
3053 X_TOOLKIT_TYPE=$USE_X_TOOLKIT
3057 if test "${USE_X_TOOLKIT}" != "none"; then
3058 AC_MSG_CHECKING(X11 toolkit version)
3059 AC_CACHE_VAL(emacs_cv_x11_toolkit_version_6,
3060 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <X11/Intrinsic.h>]],
3061 [[#if XtSpecificationRelease < 6
3064 ]])], emacs_cv_x11_toolkit_version_6=yes, emacs_cv_x11_toolkit_version_6=no)])
3065 HAVE_X11XTR6=$emacs_cv_x11_toolkit_version_6
3066 if test $emacs_cv_x11_toolkit_version_6 = yes; then
3067 AC_MSG_RESULT(6 or newer)
3068 AC_DEFINE(HAVE_X11XTR6, 1,
3069 [Define to 1 if you have the X11R6 or newer version of Xt.])
3070 LIBXTR6="-lSM -lICE"
3072 ## Use libw.a along with X11R6 Xt.
3073 unixware) LIBXTR6="$LIBXTR6 -lw" ;;
3076 AC_MSG_RESULT(before 6)
3079 dnl If using toolkit, check whether libXmu.a exists.
3080 dnl tranle@intellicorp.com says libXmu.a can need XtMalloc in libXt.a to link.
3082 if test x$HAVE_X11XTR6 = xyes; then
3083 OTHERLIBS='-lXt -lSM -lICE'
3087 AC_SEARCH_LIBS([XmuConvertStandardSelection], [Xmu], [], [], [$OTHERLIBS])
3088 if test "X$LIBS" != "X$OLDLIBS"; then
3089 LIBXMU=$ac_cv_search_XmuConvertStandardSelection
3092 dnl ac_cv_search_XmuConvertStandardSelection is also referenced below.
3098 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3099 # OpenMotif may be installed in such a way on some GNU/Linux systems.
3100 if test -d /usr/include/openmotif; then
3101 CPPFLAGS="-I/usr/include/openmotif $CPPFLAGS"
3102 emacs_cv_openmotif=yes
3103 case "$canonical" in
3104 x86_64-*-linux-gnu* | powerpc64-*-linux-gnu* | sparc64-*-linux-gnu*)
3105 test -d /usr/lib64/openmotif && LDFLAGS="-L/usr/lib64/openmotif $LDFLAGS"
3108 test -d /usr/lib/openmotif && LDFLAGS="-L/usr/lib/openmotif $LDFLAGS"
3111 emacs_cv_openmotif=no
3113 AC_CACHE_CHECK(for (Open)Motif version 2.1, emacs_cv_motif_version_2_1,
3114 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <Xm/Xm.h>]],
3115 [[#if XmVERSION > 2 || (XmVERSION == 2 && XmREVISION >= 1)
3118 Motif version prior to 2.1.
3120 emacs_cv_motif_version_2_1=yes, emacs_cv_motif_version_2_1=no)])
3121 if test $emacs_cv_motif_version_2_1 = yes; then
3122 AC_CHECK_LIB(Xp, XpCreateContext, LIBXP=-lXp)
3123 if test x$emacs_cv_openmotif = xyes; then
3124 REAL_CPPFLAGS="-I/usr/include/openmotif $REAL_CPPFLAGS"
3127 AC_CACHE_CHECK(for LessTif where some systems put it, emacs_cv_lesstif,
3128 # We put this in CFLAGS temporarily to precede other -I options
3129 # that might be in CFLAGS temporarily.
3130 # We put this in CPPFLAGS where it precedes the other -I options.
3131 OLD_CPPFLAGS=$CPPFLAGS
3133 CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CPPFLAGS"
3134 CFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $CFLAGS"
3135 [AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include </usr/X11R6/LessTif/Motif1.2/include/Xm/Xm.h>]],
3137 emacs_cv_lesstif=yes, emacs_cv_lesstif=no)])
3138 if test $emacs_cv_lesstif = yes; then
3139 # Make sure this -I option remains in CPPFLAGS after it is set
3140 # back to REAL_CPPFLAGS.
3141 # There is no need to change REAL_CFLAGS, because REAL_CFLAGS does not
3142 # have those other -I options anyway. Ultimately, having this
3143 # directory ultimately in CPPFLAGS will be enough.
3144 REAL_CPPFLAGS="-I/usr/X11R6/LessTif/Motif1.2/include $REAL_CPPFLAGS"
3145 LDFLAGS="-L/usr/X11R6/LessTif/Motif1.2/lib $LDFLAGS"
3148 CPPFLAGS=$OLD_CPPFLAGS
3151 AC_CHECK_HEADER([Xm/BulletinB.h], [],
3152 [AC_MSG_ERROR([Motif toolkit requested but requirements not found.])])
3155 dnl Use toolkit scroll bars if configured for GTK or X toolkit and either
3156 dnl using Motif or Xaw3d is available, and unless
3157 dnl --with-toolkit-scroll-bars=no was specified.
3159 AH_TEMPLATE(USE_TOOLKIT_SCROLL_BARS,
3160 [Define to 1 if we should use toolkit scroll bars.])dnl
3161 USE_TOOLKIT_SCROLL_BARS=no
3162 if test "${with_toolkit_scroll_bars}" != "no"; then
3163 if test "${USE_X_TOOLKIT}" != "none"; then
3164 if test "${USE_X_TOOLKIT}" = "MOTIF"; then
3165 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3167 USE_TOOLKIT_SCROLL_BARS=yes
3168 elif test "${HAVE_XAW3D}" = "yes" || test "${USE_X_TOOLKIT}" = "LUCID"; then
3169 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3170 USE_TOOLKIT_SCROLL_BARS=yes
3172 elif test "${HAVE_GTK}" = "yes"; then
3173 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3174 USE_TOOLKIT_SCROLL_BARS=yes
3175 elif test "${HAVE_NS}" = "yes"; then
3176 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3177 USE_TOOLKIT_SCROLL_BARS=yes
3178 elif test "${HAVE_W32}" = "yes"; then
3179 AC_DEFINE(USE_TOOLKIT_SCROLL_BARS)
3180 USE_TOOLKIT_SCROLL_BARS=yes
3184 dnl See if XIM is available.
3185 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3186 #include <X11/Xlib.h>
3187 #include <X11/Xresource.h>]],
3188 [[XIMProc callback;]])],
3190 AC_DEFINE(HAVE_XIM, 1, [Define to 1 if XIM is available])],
3193 dnl '--with-xim' now controls only the initial value of use_xim at run time.
3195 if test "${with_xim}" != "no"; then
3196 AC_DEFINE(USE_XIM, 1,
3197 [Define to 1 if we should use XIM, if it is available.])
3201 if test "${HAVE_XIM}" != "no"; then
3203 if test "$GCC" = yes; then
3204 CFLAGS="$CFLAGS --pedantic-errors"
3206 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
3207 #include <X11/Xlib.h>
3208 #include <X11/Xresource.h>]],
3214 XPointer *client_data;
3216 /* If we're not using GCC, it's probably not XFree86, and this is
3217 probably right, but we can't use something like --pedantic-errors. */
3218 extern Bool XRegisterIMInstantiateCallback(Display*, XrmDatabase, char*,
3219 char*, XIMProc, XPointer*);
3221 (void)XRegisterIMInstantiateCallback(display, db, res_name, res_class, callback,
3223 [emacs_cv_arg6_star=yes])
3224 AH_TEMPLATE(XRegisterIMInstantiateCallback_arg6,
3225 [Define to the type of the 6th arg of XRegisterIMInstantiateCallback,
3226 either XPointer or XPointer*.])dnl
3227 if test "$emacs_cv_arg6_star" = yes; then
3228 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer*])
3230 AC_DEFINE(XRegisterIMInstantiateCallback_arg6, [XPointer])
3235 ### Start of font-backend (under any platform) section.
3236 # (nothing here yet -- this is a placeholder)
3237 ### End of font-backend (under any platform) section.
3239 ### Start of font-backend (under X11) section.
3240 if test "${HAVE_X11}" = "yes"; then
3241 ## Use -lXft if available, unless '--with-xft=no'.
3243 if test "x${with_x}" = "xno"; then
3247 if test "$with_xft" != no; then
3248 EMACS_CHECK_MODULES([FONTCONFIG], [fontconfig >= 2.2.0])
3249 with_xft=$HAVE_FONTCONFIG
3252 if test "x${with_xft}" != "xno"; then
3254 EMACS_CHECK_MODULES([XFT], [xft >= 0.13.0], [], [HAVE_XFT=no])
3255 ## Because xftfont.c uses XRenderQueryExtension, we also
3256 ## need to link to -lXrender.
3258 AC_CHECK_LIB(Xrender, XRenderQueryExtension, HAVE_XRENDER=yes)
3259 if test "$HAVE_XFT" != no && test "$HAVE_XRENDER" != no; then
3260 OLD_CPPFLAGS="$CPPFLAGS"
3261 OLD_CFLAGS="$CFLAGS"
3263 CPPFLAGS="$CPPFLAGS $XFT_CFLAGS"
3264 CFLAGS="$CFLAGS $XFT_CFLAGS"
3265 XFT_LIBS="-lXrender $XFT_LIBS"
3266 LIBS="$XFT_LIBS $LIBS"
3267 AC_CHECK_HEADER(X11/Xft/Xft.h,
3268 AC_CHECK_LIB(Xft, XftFontOpen, HAVE_XFT=yes, , $XFT_LIBS) , ,
3269 [[#include <X11/X.h>]])
3271 if test "${HAVE_XFT}" = "yes"; then
3272 AC_DEFINE(HAVE_XFT, 1, [Define to 1 if you have the Xft library.])
3274 C_SWITCH_X_SITE="$C_SWITCH_X_SITE $XFT_CFLAGS"
3275 fi # "${HAVE_XFT}" = "yes"
3276 CPPFLAGS=$OLD_CPPFLAGS
3279 fi # "$HAVE_XFT" != no
3280 fi # "x${with_xft}" != "xno"
3282 ## We used to allow building with FreeType and without Xft.
3283 ## However, the ftx font backend driver is not in good shape.
3284 if test "$HAVE_XFT" != "yes"; then
3285 dnl For the "Does Emacs use" message at the end.
3289 dnl Strict linkers fail with
3290 dnl ftfont.o: undefined reference to symbol 'FT_New_Face'
3291 dnl if -lfreetype is not specified.
3292 dnl The following is needed to set FREETYPE_LIBS.
3293 EMACS_CHECK_MODULES([FREETYPE], [freetype2])
3295 test "$HAVE_FREETYPE" = "no" && AC_MSG_ERROR(libxft requires libfreetype)
3299 if test "${HAVE_FREETYPE}" = "yes"; then
3300 AC_DEFINE(HAVE_FREETYPE, 1,
3301 [Define to 1 if using the freetype and fontconfig libraries.])
3302 if test "${with_libotf}" != "no"; then
3303 EMACS_CHECK_MODULES([LIBOTF], [libotf])
3304 if test "$HAVE_LIBOTF" = "yes"; then
3305 AC_DEFINE(HAVE_LIBOTF, 1, [Define to 1 if using libotf.])
3306 AC_CHECK_LIB(otf, OTF_get_variation_glyphs,
3307 HAVE_OTF_GET_VARIATION_GLYPHS=yes,
3308 HAVE_OTF_GET_VARIATION_GLYPHS=no)
3309 if test "${HAVE_OTF_GET_VARIATION_GLYPHS}" = "yes"; then
3310 AC_DEFINE(HAVE_OTF_GET_VARIATION_GLYPHS, 1,
3311 [Define to 1 if libotf has OTF_get_variation_glyphs.])
3315 dnl FIXME should there be an error if HAVE_FREETYPE != yes?
3316 dnl Does the new font backend require it, or can it work without it?
3320 if test "${HAVE_LIBOTF}" = yes; then
3321 if test "${with_m17n_flt}" != "no"; then
3322 EMACS_CHECK_MODULES([M17N_FLT], [m17n-flt])
3323 if test "$HAVE_M17N_FLT" = "yes"; then
3324 AC_DEFINE(HAVE_M17N_FLT, 1, [Define to 1 if using libm17n-flt.])
3335 ### End of font-backend (under X11) section.
3337 AC_SUBST(FREETYPE_CFLAGS)
3338 AC_SUBST(FREETYPE_LIBS)
3339 AC_SUBST(FONTCONFIG_CFLAGS)
3340 AC_SUBST(FONTCONFIG_LIBS)
3341 AC_SUBST(LIBOTF_CFLAGS)
3342 AC_SUBST(LIBOTF_LIBS)
3343 AC_SUBST(M17N_FLT_CFLAGS)
3344 AC_SUBST(M17N_FLT_LIBS)
3347 if test "${HAVE_X11}" = "yes"; then
3348 if test "${with_cairo}" != "no"; then
3349 CAIRO_REQUIRED=1.12.0
3350 CAIRO_MODULE="cairo >= $CAIRO_REQUIRED"
3351 EMACS_CHECK_MODULES(CAIRO, $CAIRO_MODULE)
3352 if test $HAVE_CAIRO = yes; then
3353 AC_DEFINE(USE_CAIRO, 1, [Define to 1 if using cairo.])
3355 AC_MSG_ERROR([cairo requested but not found.])
3358 CFLAGS="$CFLAGS $CAIRO_CFLAGS"
3359 LIBS="$LIBS $CAIRO_LIBS"
3360 AC_SUBST(CAIRO_CFLAGS)
3361 AC_SUBST(CAIRO_LIBS)
3365 if test "${HAVE_X11}" = "yes"; then
3366 AC_CHECK_HEADER(X11/Xlib-xcb.h,
3367 AC_CHECK_LIB(xcb, xcb_translate_coordinates, HAVE_XCB=yes))
3368 if test "${HAVE_XCB}" = "yes"; then
3369 AC_CHECK_LIB(X11-xcb, XGetXCBConnection, HAVE_X11_XCB=yes)
3370 if test "${HAVE_X11_XCB}" = "yes"; then
3371 AC_DEFINE(USE_XCB, 1,
3372 [Define to 1 if you have the XCB library and X11-XCB library for mixed
3373 X11/XCB programming.])
3374 XCB_LIBS="-lX11-xcb -lxcb"
3380 ### Use -lXpm if available, unless '--with-xpm=no'.
3381 ### mingw32 doesn't use -lXpm, since it loads the library dynamically.
3382 ### The Cygwin-w32 build uses <noX/xpm.h> instead of <X11/xpm.h>, so
3383 ### we need to set LDFLAGS accordingly.
3386 if test "${HAVE_W32}" = "yes" && test "${opsys}" = "cygwin"; then
3387 if test "${with_xpm}" != "no"; then
3388 SAVE_LDFLAGS="$LDFLAGS"
3389 LDFLAGS="$LDFLAGS -L/usr/lib/noX"
3390 AC_CHECK_HEADER(noX/xpm.h,
3391 [AC_CHECK_LIB(Xpm, XpmReadFileToImage, HAVE_XPM=yes)])
3392 if test "${HAVE_XPM}" = "yes"; then
3393 AC_MSG_CHECKING(for XpmReturnAllocPixels preprocessor define)
3394 AC_EGREP_CPP(no_return_alloc_pixels,
3395 [#include "noX/xpm.h"
3396 #ifndef XpmReturnAllocPixels
3397 no_return_alloc_pixels
3399 ], HAVE_XPM=no, HAVE_XPM=yes)
3401 if test "${HAVE_XPM}" = "yes"; then
3405 LDFLAGS="$SAVE_LDFLAGS"
3410 if test "${HAVE_XPM}" = "yes"; then
3411 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3416 if test "${HAVE_X11}" = "yes"; then
3417 dnl Avoid Xpm on AIX unless requested, as it crashes; see Bug#17598.
3418 test "$opsys$with_xpm_set" = aix4-2 && with_xpm=no
3420 if test "${with_xpm}" != "no"; then
3421 AC_CHECK_HEADER(X11/xpm.h,
3422 [AC_CHECK_LIB(Xpm, XpmReadFileToPixmap, HAVE_XPM=yes, , -lX11)])
3423 if test "${HAVE_XPM}" = "yes"; then
3424 AC_MSG_CHECKING(for XpmReturnAllocPixels preprocessor define)
3425 AC_EGREP_CPP(no_return_alloc_pixels,
3426 [#include "X11/xpm.h"
3427 #ifndef XpmReturnAllocPixels
3428 no_return_alloc_pixels
3430 ], HAVE_XPM=no, HAVE_XPM=yes)
3432 if test "${HAVE_XPM}" = "yes"; then
3440 if test "${HAVE_XPM}" = "yes"; then
3441 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3443 elif test "$opsys,$LUCID_LIBW" = aix4-2,-lXaw; then
3444 dnl AIX -lXaw needs -lXpm linked too; see Bug#17598 Message#152.
3449 ### FIXME: Perhaps regroup to minimize code duplication due to MinGW's
3450 ### slightly different requirements wrt image libraries (it doesn't
3451 ### use -lXpm because it loads the xpm shared library dynamically at
3453 if test "${opsys}" = "mingw32"; then
3454 if test "${with_xpm}" != "no"; then
3455 AC_CHECK_HEADER(X11/xpm.h, HAVE_XPM=yes, HAVE_XPM=no, [
3459 if test "${HAVE_XPM}" = "yes"; then
3460 AC_DEFINE(HAVE_XPM, 1, [Define to 1 if you have the Xpm library (-lXpm).])
3466 ### Use -ljpeg if available, unless '--with-jpeg=no'.
3469 if test "${with_jpeg}" != "no"; then
3470 AC_CACHE_CHECK([for jpeglib 6b or later],
3473 for emacs_cv_jpeglib in yes -ljpeg no; do
3474 case $emacs_cv_jpeglib in
3477 *) LIBS="$LIBS $emacs_cv_jpeglib";;
3481 [[#undef HAVE_STDLIB_H /* Avoid config.h/jpeglib.h collision. */
3482 #include <stdio.h> /* jpeglib.h needs FILE and size_t. */
3483 #include <jpeglib.h>
3485 char verify[JPEG_LIB_VERSION < 62 ? -1 : 1];
3486 struct jpeg_decompress_struct cinfo;
3489 jpeg_create_decompress (&cinfo);
3490 WARNMS (&cinfo, JWRN_JPEG_EOF);
3491 jpeg_destroy_decompress (&cinfo);
3493 [emacs_link_ok=yes],
3496 test $emacs_link_ok = yes && break
3498 if test "$emacs_cv_jpeglib" != no; then
3500 AC_DEFINE([HAVE_JPEG], 1,
3501 [Define to 1 if you have the jpeg library (typically -ljpeg).])
3502 ### mingw32 doesn't use -ljpeg, since it loads the library
3503 ### dynamically when needed, and doesn't want a run-time
3504 ### dependency on the jpeglib DLL.
3505 test "$emacs_cv_jpeglib" != yes && test "${opsys}" != "mingw32" \
3506 && LIBJPEG=$emacs_cv_jpeglib
3513 if test "${with_zlib}" != "no"; then
3515 AC_SEARCH_LIBS([inflateEnd], [z], [HAVE_ZLIB=yes])
3517 case $ac_cv_search_inflateEnd in
3518 -*) LIBZ=$ac_cv_search_inflateEnd ;;
3521 if test "${HAVE_ZLIB}" = "yes"; then
3522 AC_DEFINE([HAVE_ZLIB], 1, [Define to 1 if you have the zlib library (-lz).])
3523 ### mingw32 doesn't use -lz, since it loads the library dynamically.
3524 if test "${opsys}" = "mingw32"; then
3530 ### Dynamic modules support
3535 if test "${with_modules}" != "no"; then
3539 MODULES_SUFFIX=".so"
3543 MODULES_SUFFIX=".dll"
3547 MODULES_SUFFIX=".so"
3551 # BSD systems have dlopen in libc.
3552 AC_CHECK_FUNC([dlopen],
3553 [MODULES_SUFFIX=".so"
3558 if test "${HAVE_MODULES}" = no; then
3559 AC_MSG_ERROR([Dynamic modules are not supported on your system])
3562 LIBS="$LIBS $LIBMODULES"
3563 AC_CHECK_FUNCS([dladdr dlfunc])
3568 if test "${HAVE_MODULES}" = yes; then
3569 MODULES_OBJ="dynlib.o emacs-module.o"
3570 AC_DEFINE(HAVE_MODULES, 1, [Define to 1 if dynamic modules are enabled])
3571 AC_DEFINE_UNQUOTED(MODULES_SUFFIX, "$MODULES_SUFFIX",
3572 [System extension for dynamic libraries])
3574 AC_SUBST(MODULES_OBJ)
3575 AC_SUBST(LIBMODULES)
3576 AC_SUBST(HAVE_MODULES)
3577 AC_SUBST(MODULES_SUFFIX)
3579 AC_CONFIG_FILES([src/emacs-module.h])
3580 AC_SUBST_FILE([module_env_snippet_25])
3581 AC_SUBST_FILE([module_env_snippet_26])
3582 module_env_snippet_25="$srcdir/src/module-env-25.h"
3583 module_env_snippet_26="$srcdir/src/module-env-26.h"
3585 ### Use -lpng if available, unless '--with-png=no'.
3589 if test "${NS_IMPL_COCOA}" = yes; then
3591 elif test "${with_png}" != no; then
3592 # mingw32 loads the library dynamically.
3593 if test "$opsys" = mingw32; then
3594 AC_CHECK_HEADER([png.h], [HAVE_PNG=yes])
3595 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3596 AC_MSG_CHECKING([for png])
3597 png_cflags=`(libpng-config --cflags) 2>&AS_MESSAGE_LOG_FD` &&
3598 png_ldflags=`(libpng-config --ldflags) 2>&AS_MESSAGE_LOG_FD` || {
3599 # libpng-config does not work; configure by hand.
3600 # Debian unstable as of July 2003 has multiple libpngs, and puts png.h
3601 # in /usr/include/libpng.
3602 if test -r /usr/include/libpng/png.h &&
3603 test ! -r /usr/include/png.h; then
3604 png_cflags=-I/usr/include/libpng
3612 CFLAGS="$CFLAGS $png_cflags"
3613 LIBS="$png_ldflags -lz -lm $LIBS"
3615 [AC_LANG_PROGRAM([[#include <png.h>]],
3616 [[return !png_get_channels (0, 0);]])],
3618 PNG_CFLAGS=`AS_ECHO(["$png_cflags"]) | sed -e "$edit_cflags"`
3620 # $LIBPNG requires explicit -lz in some cases.
3621 # We don't know what those cases are, exactly, so play it safe and
3622 # append -lz to any nonempty $LIBPNG, unless we're already using LIBZ.
3623 if test -n "$LIBPNG" && test -z "$LIBZ"; then
3624 LIBPNG="$LIBPNG -lz"
3628 AC_MSG_RESULT([$HAVE_PNG])
3631 if test $HAVE_PNG = yes; then
3632 AC_DEFINE([HAVE_PNG], [1], [Define to 1 if you have the png library.])
3635 CFLAGS="$CFLAGS $PNG_CFLAGS"
3636 AC_CHECK_DECL([png_longjmp],
3638 [AC_DEFINE([PNG_DEPSTRUCT], [],
3639 [Define to empty to suppress deprecation warnings when building
3640 with --enable-gcc-warnings and with libpng versions before 1.5,
3641 which lack png_longjmp.])],
3647 AC_SUBST(PNG_CFLAGS)
3649 ### Use -ltiff if available, unless '--with-tiff=no'.
3650 ### mingw32 doesn't use -ltiff, since it loads the library dynamically.
3653 if test "${opsys}" = "mingw32"; then
3654 if test "${with_tiff}" != "no"; then
3655 AC_CHECK_HEADER(tiffio.h, HAVE_TIFF=yes, HAVE_TIFF=no)
3657 if test "${HAVE_TIFF}" = "yes"; then
3658 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3660 elif test "${HAVE_X11}" = "yes" || test "${HAVE_W32}" = "yes"; then
3661 if test "${with_tiff}" != "no"; then
3662 AC_CHECK_HEADER(tiffio.h,
3664 # At least one tiff package requires the jpeg library.
3665 if test "${HAVE_JPEG}" = yes; then tifflibs="-ljpeg $tifflibs"; fi
3666 AC_CHECK_LIB(tiff, TIFFGetVersion, HAVE_TIFF=yes, , $tifflibs)])
3669 if test "${HAVE_TIFF}" = "yes"; then
3670 AC_DEFINE(HAVE_TIFF, 1, [Define to 1 if you have the tiff library (-ltiff).])
3671 dnl FIXME -lz -lm, as per libpng?
3677 ### Use -lgif or -lungif if available, unless '--with-gif=no'.
3678 ### mingw32 doesn't use -lgif/-lungif, since it loads the library dynamically.
3681 if test "${opsys}" = "mingw32"; then
3682 if test "${with_gif}" != "no"; then
3683 AC_CHECK_HEADER(gif_lib.h, HAVE_GIF=yes, HAVE_GIF=no)
3685 if test "${HAVE_GIF}" = "yes"; then
3686 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3688 elif test "${HAVE_X11}" = "yes" && test "${with_gif}" != "no" \
3689 || test "${HAVE_W32}" = "yes"; then
3690 AC_CHECK_HEADER(gif_lib.h,
3691 # EGifPutExtensionLast only exists from version libungif-4.1.0b1.
3692 # Earlier versions can crash Emacs, but version 5.0 removes EGifPutExtensionLast.
3693 [AC_CHECK_LIB(gif, GifMakeMapObject, HAVE_GIF=yes,
3694 [AC_CHECK_LIB(gif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=maybe)])])
3696 if test "$HAVE_GIF" = yes; then
3698 elif test "$HAVE_GIF" = maybe; then
3699 # If gif_lib.h but no libgif, try libungif.
3700 AC_CHECK_LIB(ungif, EGifPutExtensionLast, HAVE_GIF=yes, HAVE_GIF=no)
3701 test "$HAVE_GIF" = yes && LIBGIF=-lungif
3704 if test "${HAVE_GIF}" = "yes"; then
3705 AC_DEFINE(HAVE_GIF, 1, [Define to 1 if you have a gif (or ungif) library.])
3710 dnl Check for required libraries.
3713 if test "${HAVE_X11}" = "yes"; then
3714 test "${with_xpm}" != "no" && test "${HAVE_XPM}" != "yes" &&
3715 MISSING="libXpm" && WITH_NO="--with-xpm=no"
3716 test "${with_jpeg}" != "no" && test "${HAVE_JPEG}" != "yes" &&
3717 MISSING="$MISSING libjpeg" && WITH_NO="$WITH_NO --with-jpeg=no"
3718 test "${with_png}" != "no" && test "${HAVE_PNG}" != "yes" &&
3719 MISSING="$MISSING libpng" && WITH_NO="$WITH_NO --with-png=no"
3720 test "${with_gif}" != "no" && test "${HAVE_GIF}" != "yes" &&
3721 MISSING="$MISSING libgif/libungif" && WITH_NO="$WITH_NO --with-gif=no"
3722 test "${with_tiff}" != "no" && test "${HAVE_TIFF}" != "yes" &&
3723 MISSING="$MISSING libtiff" && WITH_NO="$WITH_NO --with-tiff=no"
3725 test "${with_gnutls}" != "no" && test "${HAVE_GNUTLS}" != "yes" &&
3726 MISSING="$MISSING gnutls" && WITH_NO="$WITH_NO --with-gnutls=no"
3727 if test "X${MISSING}" != X; then
3728 AC_MSG_ERROR([The following required libraries were not found:
3730 Maybe some development libraries/packages are missing?
3731 If you don't want to link with them give
3733 as options to configure])
3736 ### Use -lgpm if available, unless '--with-gpm=no'.
3739 if test "${with_gpm}" != "no"; then
3740 AC_CHECK_HEADER(gpm.h,
3741 [AC_CHECK_LIB(gpm, Gpm_Open, HAVE_GPM=yes)])
3743 if test "${HAVE_GPM}" = "yes"; then
3744 AC_DEFINE(HAVE_GPM, 1, [Define to 1 if you have the gpm library (-lgpm).])
3750 dnl Check for malloc/malloc.h on darwin
3751 AC_CHECK_HEADERS_ONCE(malloc/malloc.h)
3754 ### Use NeXTstep API to implement GUI.
3755 if test "${HAVE_NS}" = "yes"; then
3756 AC_DEFINE(HAVE_NS, 1, [Define to 1 if you are using the NeXTstep API, either GNUstep or Cocoa on macOS.])
3757 if test "${NS_IMPL_COCOA}" = "yes"; then
3758 AC_DEFINE(NS_IMPL_COCOA, 1, [Define to 1 if you are using NS windowing under macOS.])
3760 if test "${NS_IMPL_GNUSTEP}" = "yes"; then
3761 AC_DEFINE(NS_IMPL_GNUSTEP, 1, [Define to 1 if you are using NS windowing under GNUstep.])
3762 if test $NS_GNUSTEP_CONFIG != yes; then
3763 # See also .m.o rule in src/Makefile.in. */
3764 # FIXME: are all these flags really needed? Document here why. */
3765 GNUSTEP_CFLAGS="-D_REENTRANT -fPIC -fno-strict-aliasing -I${GNUSTEP_SYSTEM_HEADERS} ${GNUSTEP_LOCAL_HEADERS}"
3766 ## Extra CFLAGS applied to src/*.m files.
3767 GNU_OBJC_CFLAGS="$GNU_OBJC_CFLAGS -fgnu-runtime -Wno-import -fconstant-string-class=NSConstantString -DGNUSTEP_BASE_LIBRARY=1 -DGNU_GUI_LIBRARY=1 -DGNU_RUNTIME=1 -DGSWARN -DGSDIAGNOSE"
3773 ### Use session management (-lSM -lICE) if available
3776 if test "${HAVE_X11}" = "yes"; then
3777 AC_CHECK_HEADER(X11/SM/SMlib.h,
3778 [AC_CHECK_LIB(SM, SmcOpenConnection, HAVE_X_SM=yes, , -lICE)])
3780 if test "${HAVE_X_SM}" = "yes"; then
3781 AC_DEFINE(HAVE_X_SM, 1, [Define to 1 if you have the SM library (-lSM).])
3787 ### Use XRandr (-lXrandr) if available
3789 if test "${HAVE_X11}" = "yes"; then
3790 XRANDR_REQUIRED=1.2.2
3791 XRANDR_MODULES="xrandr >= $XRANDR_REQUIRED"
3792 EMACS_CHECK_MODULES([XRANDR], [$XRANDR_MODULES])
3793 if test $HAVE_XRANDR = no; then
3794 # Test old way in case pkg-config doesn't have it (older machines).
3795 # Include Xrender.h by hand to work around bug in older Xrandr.h
3796 # (e.g. RHEL5) and silence (harmless) configure warning (bug#18465).
3797 AC_CHECK_HEADER(X11/extensions/Xrandr.h,
3798 [AC_CHECK_LIB(Xrandr, XRRGetScreenResources, HAVE_XRANDR=yes)],
3799 [], [AC_INCLUDES_DEFAULT
3800 #include <X11/extensions/Xrender.h>])
3801 if test $HAVE_XRANDR = yes; then
3802 XRANDR_LIBS=-lXrandr
3805 if test $HAVE_XRANDR = yes; then
3806 AC_DEFINE(HAVE_XRANDR, 1, [Define to 1 if you have the XRandr extension.])
3809 AC_SUBST(XRANDR_CFLAGS)
3810 AC_SUBST(XRANDR_LIBS)
3812 ### Use Xinerama (-lXinerama) if available
3814 if test "${HAVE_X11}" = "yes"; then
3815 XINERAMA_REQUIRED=1.0.2
3816 XINERAMA_MODULES="xinerama >= $XINERAMA_REQUIRED"
3817 EMACS_CHECK_MODULES([XINERAMA], [$XINERAMA_MODULES])
3818 if test $HAVE_XINERAMA = no; then
3819 # Test old way in case pkg-config doesn't have it (older machines).
3820 AC_CHECK_HEADER(X11/extensions/Xinerama.h,
3821 [AC_CHECK_LIB(Xinerama, XineramaQueryExtension, HAVE_XINERAMA=yes)])
3822 if test $HAVE_XINERAMA = yes; then
3823 XINERAMA_LIBS=-lXinerama
3826 if test $HAVE_XINERAMA = yes; then
3827 AC_DEFINE(HAVE_XINERAMA, 1, [Define to 1 if you have the Xinerama extension.])
3830 AC_SUBST(XINERAMA_CFLAGS)
3831 AC_SUBST(XINERAMA_LIBS)
3833 ### Use Xfixes (-lXfixes) if available
3835 if test "${HAVE_X11}" = "yes"; then
3836 XFIXES_REQUIRED=4.0.0
3837 XFIXES_MODULES="xfixes >= $XFIXES_REQUIRED"
3838 EMACS_CHECK_MODULES([XFIXES], [$XFIXES_MODULES])
3839 if test $HAVE_XFIXES = no; then
3840 # Test old way in case pkg-config doesn't have it (older machines).
3841 AC_CHECK_HEADER(X11/extensions/Xfixes.h,
3842 [AC_CHECK_LIB(Xfixes, XFixesHideCursor, HAVE_XFIXES=yes)])
3843 if test $HAVE_XFIXES = yes; then
3844 XFIXES_LIBS=-lXfixes
3847 if test $HAVE_XFIXES = yes; then
3848 AC_DEFINE(HAVE_XFIXES, 1, [Define to 1 if you have the Xfixes extension.])
3851 AC_SUBST(XFIXES_CFLAGS)
3852 AC_SUBST(XFIXES_LIBS)
3854 ### Use Xdbe (-lXdbe) if available
3856 if test "${HAVE_X11}" = "yes"; then
3857 AC_CHECK_HEADER(X11/extensions/Xdbe.h,
3858 [AC_CHECK_LIB(Xext, XdbeAllocateBackBufferName, HAVE_XDBE=yes)],
3860 [#include <X11/Xlib.h>
3862 if test $HAVE_XDBE = yes; then
3865 if test $HAVE_XDBE = yes; then
3866 AC_DEFINE(HAVE_XDBE, 1, [Define to 1 if you have the Xdbe extension.])
3869 AC_SUBST(XDBE_CFLAGS)
3872 ### Use libxml (-lxml2) if available
3873 ### mingw32 doesn't use -lxml2, since it loads the library dynamically.
3875 if test "${with_xml2}" != "no"; then
3876 ### I'm not sure what the version number should be, so I just guessed.
3877 EMACS_CHECK_MODULES([LIBXML2], [libxml-2.0 > 2.6.17])
3878 # Built-in libxml2 on OS X 10.8 lacks libxml-2.0.pc.
3879 if test "${HAVE_LIBXML2}" != "yes" && test "$opsys" = "darwin"; then
3880 SAVE_CPPFLAGS="$CPPFLAGS"
3881 if test -z "$xcsdkdir" -a -n "$XCRUN" -a ! -d /usr/include; then
3882 dnl /usr/include is not found. Try Xcode SDK dir if it is sane.
3883 xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
3885 *[[\\\"\#\$\&\'\`$am_lf\ \ ]]*)
3889 CPPFLAGS="$CPPFLAGS -I$xcsdkdir/usr/include/libxml2"
3890 AC_CHECK_HEADER(libxml/HTMLparser.h,
3891 [AC_CHECK_DECL(HTML_PARSE_RECOVER, HAVE_LIBXML2=yes, ,
3892 [#include <libxml/HTMLparser.h>])])
3893 CPPFLAGS="$SAVE_CPPFLAGS"
3894 if test "${HAVE_LIBXML2}" = "yes"; then
3895 LIBXML2_CFLAGS="-I'$xcsdkdir/usr/include/libxml2'"
3896 LIBXML2_LIBS="-lxml2"
3899 if test "${HAVE_LIBXML2}" = "yes"; then
3900 if test "${opsys}" != "mingw32"; then
3901 AC_CHECK_LIB(xml2, htmlReadMemory, HAVE_LIBXML2=yes, HAVE_LIBXML2=no,
3906 if test "${HAVE_LIBXML2}" = "yes"; then
3907 AC_DEFINE(HAVE_LIBXML2, 1, [Define to 1 if you have the libxml library (-lxml2).])
3914 AC_SUBST(LIBXML2_LIBS)
3915 AC_SUBST(LIBXML2_CFLAGS)
3919 if test ! "$with_mailutils"; then
3920 # Check for mail-locking functions in a "mail" library. Probably this should
3921 # have the same check as for liblockfile below.
3922 AC_CHECK_LIB([mail], [maillock], [have_mail=yes], [have_mail=no])
3923 if test $have_mail = yes; then
3925 AC_DEFINE([HAVE_LIBMAIL], [1],
3926 [Define to 1 if you have the 'mail' library (-lmail).])
3929 LIBS="$LIBS_MAIL $LIBS"
3930 AC_CHECK_FUNCS([touchlock])
3933 dnl Debian, at least:
3934 AC_CHECK_LIB([lockfile], [maillock], [have_lockfile=yes], [have_lockfile=no])
3935 if test $have_lockfile = yes; then
3936 LIBS_MAIL=-llockfile
3937 AC_DEFINE([HAVE_LIBLOCKFILE], [1],
3938 [Define to 1 if you have the 'lockfile' library (-llockfile).])
3940 # If we have the shared liblockfile, assume we must use it for mail
3941 # locking (e.g. Debian). If we couldn't link against liblockfile
3942 # (no liblockfile.a installed), ensure that we don't need to.
3943 dnl This works for files generally, not just executables.
3944 dnl Should we look elsewhere for it? Maybe examine /etc/ld.so.conf?
3945 AC_CHECK_PROG([liblockfile], [liblockfile.so], [yes], [no],
3946 [/usr/lib:/lib:/usr/local/lib:$LD_LIBRARY_PATH])
3947 if test "$ac_cv_prog_liblockfile" = yes; then
3948 AC_MSG_ERROR([Shared liblockfile found but can't link against it.
3949 This probably means that movemail could lose mail.
3950 There may be a 'development' package to install containing liblockfile.])
3953 AC_CHECK_HEADERS([maillock.h])
3955 ## Define MAIL_USE_FLOCK (or LOCKF) if the mailer uses flock (or lockf) to
3956 ## interlock access to the mail spool. The alternative is a lock file named
3957 ## /usr/spool/mail/$USER.lock.
3960 aix4-2) mail_lock="lockf" ;;
3962 gnu|freebsd|dragonfly|netbsd|openbsd|darwin) mail_lock="flock" ;;
3964 ## On GNU/Linux systems, both methods are used by various mail programs.
3965 ## I assume most people are using newer mailers that have heard of flock.
3966 ## Change this if you need to.
3967 ## Debian contains a patch which says: "On Debian/GNU/Linux systems,
3968 ## configure gets the right answers, and that means *NOT* using flock.
3969 ## Using flock is guaranteed to be the wrong thing. See Debian Policy
3970 ## for details." and then uses '#ifdef DEBIAN'. Unfortunately the
3971 ## Debian maintainer hasn't provided a clean fix for Emacs.
3972 ## movemail.c will use 'maillock' when MAILDIR, HAVE_LIBMAIL and
3973 ## HAVE_MAILLOCK_H are defined, so the following appears to be the
3974 ## correct logic. -- fx
3975 ## We must check for HAVE_LIBLOCKFILE too, as movemail does.
3976 ## liblockfile is a Free Software replacement for libmail, used on
3977 ## Debian systems and elsewhere. -rfr.
3980 if test $have_mail = yes || test $have_lockfile = yes; then
3981 test $ac_cv_header_maillock_h = yes && mail_lock=no
3985 mail_lock="none-needed" ;;
3989 flock) AC_DEFINE([MAIL_USE_FLOCK], [1],
3990 [Define if the mailer uses flock to interlock the mail spool.]);;
3992 lockf) AC_DEFINE([MAIL_USE_LOCKF], [1],
3993 [Define if the mailer uses lockf to interlock the mail spool.]);;
3997 *) BLESSMAIL_TARGET="need-blessmail" ;;
4000 AC_SUBST([BLESSMAIL_TARGET])
4001 AC_SUBST([LIBS_MAIL])
4004 LIBS="$LIB_PTHREAD $LIB_MATH $LIBS"
4005 AC_CHECK_FUNCS(accept4 fchdir gethostname \
4006 getrusage get_current_dir_name \
4007 lrand48 random rint trunc \
4008 select getpagesize setlocale newlocale \
4009 getrlimit setrlimit shutdown \
4010 pthread_sigmask strsignal setitimer \
4011 sendto recvfrom getsockname getifaddrs freeifaddrs \
4013 getpwent endpwent getgrent endgrent \
4014 cfmakeraw cfsetspeed __executable_start log2 prctl)
4017 dnl No need to check for posix_memalign if aligned_alloc works.
4018 AC_CHECK_FUNCS([aligned_alloc posix_memalign], [break])
4019 AC_CHECK_DECLS([aligned_alloc], [], [], [[#include <stdlib.h>]])
4021 dnl Cannot use AC_CHECK_FUNCS
4022 AC_CACHE_CHECK([for __builtin_unwind_init],
4023 emacs_cv_func___builtin_unwind_init,
4024 [AC_LINK_IFELSE([AC_LANG_PROGRAM([], [__builtin_unwind_init ();])],
4025 emacs_cv_func___builtin_unwind_init=yes,
4026 emacs_cv_func___builtin_unwind_init=no)])
4027 if test $emacs_cv_func___builtin_unwind_init = yes; then
4028 AC_DEFINE(HAVE___BUILTIN_UNWIND_INIT, 1,
4029 [Define to 1 if you have the '__builtin_unwind_init' function.])
4032 AC_CHECK_HEADERS_ONCE(sys/un.h)
4037 AC_CHECK_FUNCS(grantpt)
4039 # PTY-related GNU extensions.
4040 AC_CHECK_FUNCS(getpt posix_openpt)
4042 # Check this now, so that we will NOT find the above functions in ncurses.
4043 # That is because we have not set up to link ncurses in lib-src.
4044 # It's better to believe a function is not available
4045 # than to expect to find it in ncurses.
4046 # Also we need tputs and friends to be able to build at all.
4047 AC_MSG_CHECKING([for library containing tputs])
4048 # Run a test program that contains a call to tputs, a call that is
4049 # never executed. This tests whether a pre-'main' dynamic linker
4050 # works with the library. It's too much trouble to actually call
4051 # tputs in the test program, due to portability hassles. When
4052 # cross-compiling, assume the test program will run if it links.
4053 AC_DEFUN([tputs_link_source], [
4055 [[extern void tputs (const char *, int, int (*)(int));
4056 int main (int argc, char **argv)
4059 tputs (argv[0], 0, 0);
4063 if test "${opsys}" = "mingw32"; then
4066 # Maybe curses should be tried earlier?
4067 # See http://debbugs.gnu.org/cgi/bugreport.cgi?bug=9736#35
4068 for tputs_library in '' tinfo ncurses terminfo termcap curses; do
4070 if test -z "$tputs_library"; then
4074 LIBS_TERMCAP=-l$tputs_library
4076 LIBS="$LIBS_TERMCAP $LIBS"
4078 AC_RUN_IFELSE([tputs_link_source], [], [msg=no],
4079 [AC_LINK_IFELSE([tputs_link_source], [], [msg=no])])
4081 if test "X$msg" != Xno; then
4086 AC_MSG_RESULT([$msg])
4087 if test "X$msg" = Xno; then
4088 AC_MSG_ERROR([The required function 'tputs' was not found in any library.
4089 The following libraries were tried (in order):
4090 libtinfo, libncurses, libterminfo, libtermcap, libcurses
4091 Please try installing whichever of these libraries is most appropriate
4092 for your system, together with its header files.
4093 For example, a libncurses-dev(el) or similar package.])
4096 ## Use termcap instead of terminfo?
4097 ## Only true for: freebsd < 40000, ms-w32, msdos, netbsd < 599002500.
4099 ## FIXME? In the cases below where we unconditionally set
4100 ## LIBS_TERMCAP="-lncurses", this overrides LIBS_TERMCAP = -ltinfo,
4101 ## if that was found above to have tputs.
4102 ## Should we use the gnu* logic everywhere?
4104 ## darwin: Prevents crashes when running Emacs in Terminal.app under 10.2.
4105 ## The ncurses library has been moved out of the System framework in
4106 ## Mac OS X 10.2. So if configure detects it, set the command-line
4107 ## option to use it.
4108 darwin) LIBS_TERMCAP="-lncurses" ;;
4110 gnu*) test -z "$LIBS_TERMCAP" && LIBS_TERMCAP="-lncurses" ;;
4113 AC_MSG_CHECKING([whether FreeBSD is new enough to use terminfo])
4114 AC_CACHE_VAL(emacs_cv_freebsd_terminfo,
4115 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <osreldate.h>]],
4116 [[#if __FreeBSD_version < 400000
4119 ]])], emacs_cv_freebsd_terminfo=yes, emacs_cv_freebsd_terminfo=no)])
4121 AC_MSG_RESULT($emacs_cv_freebsd_terminfo)
4123 if test $emacs_cv_freebsd_terminfo = yes; then
4124 LIBS_TERMCAP="-lncurses"
4127 LIBS_TERMCAP="-ltermcap"
4137 if test "x$LIBS_TERMCAP" != "x-lterminfo"; then
4139 LIBS_TERMCAP="-ltermcap"
4143 openbsd | dragonfly) LIBS_TERMCAP="-lncurses" ;;
4145 ## hpux: Make sure we get select from libc rather than from libcurses
4146 ## because libcurses on HPUX 10.10 has a broken version of select.
4147 ## We used to use -lc -lcurses, but this may be cleaner.
4148 ## FIXME? But TERMINFO = yes on hpux (it used to be explicitly
4149 # set that way, now it uses the default). Isn't this a contradiction?
4150 hpux*) LIBS_TERMCAP="-ltermcap" ;;
4154 TERMCAP_OBJ=tparam.o
4155 if test $TERMINFO = yes; then
4156 AC_DEFINE(TERMINFO, 1, [Define to 1 if you use terminfo instead of termcap.])
4157 TERMCAP_OBJ=terminfo.o
4159 if test "X$LIBS_TERMCAP" = "X-lncurses"; then
4160 AC_DEFINE(USE_NCURSES, 1, [Define to 1 if you use ncurses.])
4162 AC_SUBST(LIBS_TERMCAP)
4163 AC_SUBST(TERMCAP_OBJ)
4165 # GNU/Linux-specific timer functions.
4166 AC_CACHE_CHECK([for timerfd interface], [emacs_cv_have_timerfd],
4168 [AC_LANG_PROGRAM([[#include <sys/timerfd.h>
4170 [[timerfd_create (CLOCK_REALTIME,
4171 TFD_CLOEXEC | TFD_NONBLOCK);
4172 timerfd_settime (0, TFD_TIMER_ABSTIME, 0, 0);]])],
4173 [emacs_cv_have_timerfd=yes],
4174 [emacs_cv_have_timerfd=no])])
4175 if test "$emacs_cv_have_timerfd" = yes; then
4176 AC_DEFINE([HAVE_TIMERFD], 1,
4177 [Define to 1 if timerfd functions are supported as in GNU/Linux.])
4180 # Alternate stack for signal handlers.
4181 AC_CACHE_CHECK([whether signals can be handled on alternate stack],
4182 [emacs_cv_alternate_stack],
4184 [AC_LANG_PROGRAM([[#include <signal.h>
4187 struct sigaction sa;
4188 ss.ss_sp = malloc (SIGSTKSZ);
4189 ss.ss_size = SIGSTKSZ;
4190 sa.sa_flags = SA_SIGINFO | SA_ONSTACK;
4191 sigaltstack (&ss, 0);
4192 sigaction (SIGSEGV, &sa, 0);]])],
4193 [emacs_cv_alternate_stack=yes],
4194 [emacs_cv_alternate_stack=no])])
4196 # Do we need the Hesiod library to provide the support routines?
4197 dnl FIXME? Should we be skipping this on Darwin too?
4200 if test "$with_hesiod" != no ; then
4201 # Don't set $LIBS here -- see comments above. FIXME which comments?
4203 AC_CHECK_FUNC(res_send, , [AC_CHECK_FUNC(__res_send, ,
4204 [AC_CHECK_LIB(resolv, res_send, resolv=yes,
4205 [AC_CHECK_LIB(resolv, __res_send, resolv=yes)])])])
4206 if test "$resolv" = yes ; then
4212 AC_CHECK_FUNC(hes_getmailhost, , [AC_CHECK_LIB(hesiod, hes_getmailhost,
4213 hesiod=yes, :, $RESOLVLIB)])
4215 if test x"$hesiod" = xyes; then
4217 LIBRESOLV=$RESOLVLIB
4223 # These tell us which Kerberos-related libraries to use.
4230 if test "${with_kerberos}" != no; then
4232 AC_CHECK_LIB(com_err, com_err, have_com_err=yes, have_com_err=no)
4233 if test $have_com_err = yes; then
4234 COM_ERRLIB=-lcom_err
4235 LIBS="$COM_ERRLIB $LIBS"
4237 AC_CHECK_LIB(crypto, mit_des_cbc_encrypt, have_crypto=yes, have_crypto=no)
4238 if test $have_crypto = yes; then
4240 LIBS="$CRYPTOLIB $LIBS"
4242 AC_CHECK_LIB(k5crypto, mit_des_cbc_encrypt, have_k5crypto=yes, have_k5crypto=no)
4243 if test $have_k5crypto = yes; then
4244 CRYPTOLIB=-lk5crypto
4245 LIBS="$CRYPTOLIB $LIBS"
4247 AC_CHECK_LIB(krb5, krb5_init_context, have_krb5=yes, have_krb5=no)
4248 if test $have_krb5=yes; then
4250 LIBS="$KRB5LIB $LIBS"
4252 dnl FIXME Simplify. Does not match 22 logic, thanks to default_off?
4253 if test "${with_kerberos5}" = no; then
4254 AC_CHECK_LIB(des425, des_cbc_encrypt, have_des425=yes, have_des425=no )
4255 if test $have_des425 = yes; then
4257 LIBS="$DESLIB $LIBS"
4259 AC_CHECK_LIB(des, des_cbc_encrypt, have_des=yes, have_des=no)
4260 if test $have_des = yes; then
4262 LIBS="$DESLIB $LIBS"
4265 AC_CHECK_LIB(krb4, krb_get_cred, have_krb4=yes, have_krb4=no)
4266 if test $have_krb4 = yes; then
4268 LIBS="$KRB4LIB $LIBS"
4270 AC_CHECK_LIB(krb, krb_get_cred, have_krb=yes, have_krb=no)
4271 if test $have_krb = yes; then
4273 LIBS="$KRB4LIB $LIBS"
4278 if test "${with_kerberos5}" != no; then
4279 AC_CHECK_HEADERS(krb5.h,
4280 [AC_CHECK_MEMBERS([krb5_error.text, krb5_error.e_text],,,
4281 [#include <krb5.h>])])
4283 AC_CHECK_HEADERS(krb.h,,
4284 [AC_CHECK_HEADERS(kerberosIV/krb.h,,
4285 [AC_CHECK_HEADERS(kerberos/krb.h)])])
4287 AC_CHECK_HEADERS(com_err.h)
4291 AC_SUBST(COM_ERRLIB)
4297 AC_CHECK_HEADERS(valgrind/valgrind.h)
4299 AC_CHECK_MEMBERS([struct unipair.unicode], [], [], [[#include <linux/kd.h>]])
4301 AC_CHECK_FUNCS_ONCE([sbrk])
4304 AC_CHECK_FUNC(socket, , ok_so_far=no)
4305 if test $ok_so_far = yes; then
4306 AC_CHECK_HEADER(netinet/in.h, , ok_so_far=no)
4308 if test $ok_so_far = yes; then
4309 AC_CHECK_HEADER(arpa/inet.h, , ok_so_far=no)
4311 if test $ok_so_far = yes; then
4312 dnl Fixme: Not used. Should this be HAVE_SOCKETS?
4313 AC_DEFINE(HAVE_INET_SOCKETS, 1,
4314 [Define to 1 if you have inet sockets.])
4319 AC_CHECK_FUNCS(snprintf)
4321 dnl Check for glib. This differs from other library checks in that
4322 dnl Emacs need not link to glib unless some other library is already
4323 dnl linking to glib. Although glib provides no facilities that Emacs
4324 dnl needs for its own purposes, when glib is present Emacs needs to
4325 dnl use primitives like g_main_context_query to avoid clashing with
4326 dnl glib at a low level.
4328 dnl Check this late, since it depends on $GTK_CFLAGS etc.
4332 CFLAGS="$CFLAGS $GTK_CFLAGS $RSVG_CFLAGS $DBUS_CFLAGS $SETTINGS_CFLAGS"
4333 LIBS="$LIBS $GTK_LIBS $RSVG_LIBS $DBUS_LIBS $SETTINGS_LIBS"
4334 CFLAGS="$CFLAGS $NOTIFY_CFLAGS $CAIRO_CFLAGS"
4335 LIBS="$LIBS $NOTIFY_LIBS $CAIRO_LIBS"
4336 AC_MSG_CHECKING([whether GLib is linked in])
4337 AC_LINK_IFELSE([AC_LANG_PROGRAM(
4340 [[g_print ("Hello world");]])],
4343 AC_MSG_RESULT([$links_glib])
4344 if test "${links_glib}" = "yes"; then
4345 AC_DEFINE(HAVE_GLIB, 1, [Define to 1 if GLib is linked in.])
4346 if test "$HAVE_NS" = no;then
4354 dnl Adapted from Haible's version.
4355 AC_CACHE_CHECK([for nl_langinfo and CODESET], emacs_cv_langinfo_codeset,
4356 [AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <langinfo.h>]],
4357 [[char* cs = nl_langinfo(CODESET);]])],
4358 emacs_cv_langinfo_codeset=yes,
4359 emacs_cv_langinfo_codeset=no)
4361 if test $emacs_cv_langinfo_codeset = yes; then
4362 AC_DEFINE(HAVE_LANGINFO_CODESET, 1,
4363 [Define if you have <langinfo.h> and nl_langinfo(CODESET).])
4368 dnl Fixme: AC_SYS_POSIX_TERMIOS should probably be used, but it's not clear
4369 dnl how the tty code is related to POSIX and/or other versions of termios.
4370 dnl The following looks like a useful start.
4372 dnl AC_SYS_POSIX_TERMIOS
4373 dnl if test $ac_cv_sys_posix_termios = yes; then
4374 dnl AC_DEFINE(HAVE_TERMIOS, 1, [Define to 1 if you have POSIX-style functions
4375 dnl and macros for terminal control.])
4376 dnl AC_DEFINE(HAVE_TCATTR, 1, [Define to 1 if you have tcgetattr and tcsetattr.])
4379 dnl Turned on June 1996 supposing nobody will mind it.
4380 dnl MinGW emulates passwd database, so this feature doesn't make sense there.
4381 if test "${opsys}" != "mingw32"; then
4382 AC_DEFINE(AMPERSAND_FULL_NAME, 1, [Define to use the convention that &
4383 in the full name stands for the login id.])
4386 dnl Everybody supports this, except MS.
4387 dnl Seems like the kind of thing we should be testing for, though.
4388 ## Note: PTYs are broken on darwin <6. Use at your own risk.
4389 if test "${opsys}" != "mingw32"; then
4390 AC_DEFINE(HAVE_PTYS, 1, [Define if the system supports pty devices.])
4393 dnl Everybody supports this, except MS-DOS.
4394 dnl Seems like the kind of thing we should be testing for, though.
4395 dnl Compare with HAVE_INET_SOCKETS (which is unused...) above.
4396 AC_DEFINE(HAVE_SOCKETS, 1, [Define if the system supports
4397 4.2-compatible sockets.])
4399 AH_TEMPLATE(INTERNAL_TERMINAL, [This is substituted when $TERM is "internal".])
4401 AH_TEMPLATE(NULL_DEVICE, [Name of the file to open to get
4402 a null file, or a data sink.])
4403 if test "${opsys}" = "mingw32"; then
4404 AC_DEFINE(NULL_DEVICE, ["NUL:"])
4406 AC_DEFINE(NULL_DEVICE, ["/dev/null"])
4409 if test "${opsys}" = "mingw32"; then
4414 AC_DEFINE_UNQUOTED(SEPCHAR, ['$SEPCHAR'], [Character that separates PATH elements.])
4415 dnl This is for MinGW, and is used in test/Makefile.in.
4416 dnl The MSYS Bash has heuristics for replacing ':' with ';' when it
4417 dnl decides that a command-line argument to be passed to a MinGW program
4418 dnl is a PATH-style list of directories. But that heuristics plays it
4419 dnl safe, and only does the replacement when it is _absolutely_ sure it
4420 dnl sees a colon-separated list of file names; e.g. ":." is left alone,
4421 dnl which breaks in-tree builds. So we do this manually instead.
4422 dnl Note that we cannot rely on PATH_SEPARATOR, as that one will always
4423 dnl be computed as ':' in MSYS Bash.
4426 dnl Everybody supports this, except MS-DOS.
4427 AC_DEFINE(subprocesses, 1, [Define to enable asynchronous subprocesses.])
4429 AC_DEFINE(USER_FULL_NAME, [pw->pw_gecos], [How to get a user's full name.])
4432 AC_DEFINE(DIRECTORY_SEP, ['/'],
4433 [Character that separates directories in a file name.])
4435 if test "${opsys}" = "mingw32"; then
4436 AC_DEFINE(IS_DEVICE_SEP(_c_), [((_c_) == ':')],
4437 [Returns true if character is a device separator.])
4439 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == '/' || (_c_) == '\\')],
4440 [Returns true if character is a directory separator.])
4442 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_) || IS_DEVICE_SEP(_c_))],
4443 [Returns true if character is any form of separator.])
4445 AC_DEFINE(IS_DEVICE_SEP(_c_), 0,
4446 [Returns true if character is a device separator.])
4448 AC_DEFINE(IS_DIRECTORY_SEP(_c_), [((_c_) == DIRECTORY_SEP)],
4449 [Returns true if character is a directory separator.])
4451 AC_DEFINE(IS_ANY_SEP(_c_), [(IS_DIRECTORY_SEP (_c_))],
4452 [Returns true if character is any form of separator.])
4455 if test "$USE_X_TOOLKIT" != "none"; then
4459 dnl Assar Westerlund <assar@sics.se> says this is necessary
4460 dnl for HP-UX 10.20, and that it works for HP-UX 0 as well.
4464 if test "$have_editres" != no && test ! -z "$LIBXMU"; then
4466 dnl See libXmu.a check above.
4467 if test x$HAVE_X11XTR6 = xyes; then
4468 LIBS="-lXt -lSM -lICE $LIBXMU"
4470 OTHERLIBS="-lXt -$LIBXMU"
4473 [#include <X11/Intrinsic.h>
4474 #include <X11/Xmu/Editres.h>],
4475 [_XEditResCheckMessages (0, 0, 0, 0);],
4476 [AC_DEFINE([X_TOOLKIT_EDITRES], 1,
4477 [Define to 1 if we should use XEditRes.])])
4484 dnl Some SVr4s don't define NSIG in sys/signal.h for ANSI environments;
4485 dnl instead, there's a system variable _sys_nsig. Unfortunately, we
4486 dnl need the constant to dimension an array. So wire in the appropriate
4488 AC_DEFINE(NSIG_MINIMUM, 32, [Minimum value of NSIG.])
4492 emacs_broken_SIGIO=no
4495 dnl SIGIO exists, but the feature doesn't work in the way Emacs needs.
4496 dnl See eg <http://article.gmane.org/gmane.os.openbsd.ports/46831>.
4497 hpux* | nacl | openbsd | sol2* | unixware )
4498 emacs_broken_SIGIO=yes
4502 dnl On AIX Emacs uses the gmalloc.c malloc implementation. But given
4503 dnl the way this system works, libc functions that return malloced
4504 dnl memory use the libc malloc implementation. Calling xfree or
4505 dnl xrealloc on the results of such functions results in a crash.
4507 dnl One solution for this could be to define SYSTEM_MALLOC in configure,
4508 dnl but that does not currently work on this system.
4510 dnl It is possible to completely override the malloc implementation on
4511 dnl AIX, but that involves putting the malloc functions in a shared
4512 dnl library and setting the MALLOCTYPE environment variable to point to
4513 dnl that shared library.
4515 dnl Emacs currently calls xrealloc on the results of get_current_dir name,
4516 dnl to avoid a crash just use the Emacs implementation for that function.
4518 dnl FIXME We could change the AC_CHECK_FUNCS call near the start
4519 dnl of this file, so that we do not check for get_current_dir_name
4520 dnl on AIX. But that might be fragile if something else ends
4521 dnl up testing for get_current_dir_name as a dependency.
4522 AC_DEFINE(BROKEN_GET_CURRENT_DIR_NAME, 1, [Define if
4523 get_current_dir_name should not be used.])
4527 dnl Circumvent a bug in FreeBSD. In the following sequence of
4528 dnl writes/reads on a PTY, read(2) returns bogus data:
4530 dnl write(2) 1022 bytes
4531 dnl write(2) 954 bytes, get EAGAIN
4532 dnl read(2) 1024 bytes in process_read_output
4533 dnl read(2) 11 bytes in process_read_output
4535 dnl That is, read(2) returns more bytes than have ever been written
4536 dnl successfully. The 1033 bytes read are the 1022 bytes written
4537 dnl successfully after processing (for example with CRs added if the
4538 dnl terminal is set up that way which it is here). The same bytes will
4539 dnl be seen again in a later read(2), without the CRs.
4540 AC_DEFINE(BROKEN_PTY_READ_AFTER_EAGAIN, 1, [Define on FreeBSD to
4541 work around an issue when reading from a PTY.])
4547 dnl FIXME Can't we test if this exists (eg /proc/$$)?
4548 AC_DEFINE(HAVE_PROCFS, 1, [Define if you have the /proc filesystem.])
4553 darwin | dragonfly | freebsd | netbsd | openbsd )
4554 AC_DEFINE(DONT_REOPEN_PTY, 1, [Define if process.c does not need to
4555 close a pty to make it a controlling terminal (it is already a
4556 controlling terminal of the subprocess, because we did ioctl TIOCSCTTY).])
4560 dnl FIXME Surely we can test for this rather than hard-code it.
4562 netbsd | openbsd) sound_device="/dev/audio" ;;
4563 *) sound_device="/dev/dsp" ;;
4567 AC_DEFINE_UNQUOTED(DEFAULT_SOUND_DEVICE, "$sound_device",
4568 [Name of the default sound device.])
4571 dnl Emacs can read input using SIGIO and buffering characters itself,
4572 dnl or using CBREAK mode and making C-g cause SIGINT.
4573 dnl The choice is controlled by the variable interrupt_input.
4575 dnl Define INTERRUPT_INPUT to make interrupt_input = 1 the default (use SIGIO)
4577 dnl Emacs uses the presence of the USABLE_SIGIO macro
4578 dnl to indicate whether or not signal-driven I/O is possible. It uses
4579 dnl INTERRUPT_INPUT to decide whether to use it by default.
4581 dnl SIGIO can be used only on systems that implement it (4.2 and 4.3).
4582 dnl CBREAK mode has two disadvantages
4583 dnl 1) At least in 4.2, it is impossible to handle the Meta key properly.
4584 dnl I hear that in system V this problem does not exist.
4585 dnl 2) Control-G causes output to be discarded.
4586 dnl I do not know whether this can be fixed in system V.
4588 dnl Another method of doing input is planned but not implemented.
4589 dnl It would have Emacs fork off a separate process
4590 dnl to read the input and send it to the true Emacs process
4593 darwin | gnu-linux | gnu-kfreebsd )
4594 AC_DEFINE(INTERRUPT_INPUT, 1, [Define to read input using SIGIO.])
4599 dnl If the system's imake configuration file defines 'NeedWidePrototypes'
4600 dnl as 'NO', we must define NARROWPROTO manually. Such a define is
4601 dnl generated in the Makefile generated by 'xmkmf'. If we don't define
4602 dnl NARROWPROTO, we will see the wrong function prototypes for X functions
4603 dnl taking float or double parameters.
4605 cygwin|gnu|gnu-linux|gnu-kfreebsd|freebsd|netbsd|openbsd)
4606 AC_DEFINE(NARROWPROTO, 1, [Define if system's imake configuration
4607 file defines 'NeedWidePrototypes' as 'NO'.])
4612 dnl Used in process.c, this must be a loop, even if it only runs once.
4613 AH_TEMPLATE(PTY_ITERATION, [How to iterate over PTYs.])
4614 dnl Only used if !PTY_ITERATION. Iterate from FIRST_PTY_LETTER to z,
4615 dnl trying suffixes 0-16.
4616 AH_TEMPLATE(FIRST_PTY_LETTER, [Letter to use in finding device name of
4617 first PTY, if PTYs are supported.])
4618 AH_TEMPLATE(PTY_OPEN, [How to open a PTY, if non-standard.])
4619 AH_TEMPLATE(PTY_NAME_SPRINTF, [How to get the device name of the control
4620 end of a PTY, if non-standard.])
4621 AH_TEMPLATE(PTY_TTY_NAME_SPRINTF, [How to get device name of the tty
4622 end of a PTY, if non-standard.])
4626 AC_DEFINE(PTY_ITERATION, [int c; for (c = 0; !c ; c++)])
4627 dnl You allocate a pty by opening /dev/ptc to get the master side.
4628 dnl To get the name of the slave side, you just ttyname() the master side.
4629 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptc");])
4630 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [strcpy (pty_name, ttyname (fd));])
4634 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4635 dnl multi-line AC_DEFINEs are hard. :(
4636 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)])
4637 AC_DEFINE(PTY_NAME_SPRINTF, [])
4638 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [])
4642 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4645 gnu-linux | gnu-kfreebsd | dragonfly | freebsd | netbsd | darwin | nacl )
4647 if test "x$ac_cv_func_grantpt" = xyes; then
4648 AC_DEFINE(UNIX98_PTYS, 1, [Define if the system has Unix98 PTYs.])
4649 AC_DEFINE(PTY_ITERATION, [int i; for (i = 0; i < 1; i++)])
4650 dnl Note that grantpt and unlockpt may fork. We must block SIGCHLD
4651 dnl to prevent sigchld_handler from intercepting the child's death.
4652 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); }])
4653 dnl if HAVE_POSIX_OPENPT
4654 if test "x$ac_cv_func_posix_openpt" = xyes; then
4655 AC_DEFINE(PTY_OPEN, [do { fd = posix_openpt (O_RDWR | O_CLOEXEC | O_NOCTTY); if (fd < 0 && errno == EINVAL) fd = posix_openpt (O_RDWR | O_NOCTTY); } while (false)])
4656 AC_DEFINE(PTY_NAME_SPRINTF, [])
4658 elif test "x$ac_cv_func_getpt" = xyes; then
4659 AC_DEFINE(PTY_OPEN, [fd = getpt ()])
4660 AC_DEFINE(PTY_NAME_SPRINTF, [])
4662 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4665 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4670 AC_DEFINE(FIRST_PTY_LETTER, ['p'])
4671 AC_DEFINE(PTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/ptym/pty%c%x", c, i);])
4672 AC_DEFINE(PTY_TTY_NAME_SPRINTF, [sprintf (pty_name, "/dev/pty/tty%c%x", c, i);])
4676 dnl On SysVr4, grantpt(3) forks a subprocess, so do not use
4677 dnl O_CLOEXEC when opening the pty, and keep the SIGCHLD handler
4678 dnl from intercepting that death. If any child but grantpt's should die
4679 dnl within, it should be caught after sigrelse(2).
4680 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4681 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); }])
4685 dnl Comments are as per sol2*.
4686 AC_DEFINE(PTY_OPEN, [fd = open (pty_name, O_RDWR | O_NONBLOCK)])
4687 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); }])
4694 dnl This change means that we don't loop through allocate_pty too
4695 dnl many times in the (rare) event of a failure.
4696 AC_DEFINE(FIRST_PTY_LETTER, ['z'])
4697 AC_DEFINE(PTY_NAME_SPRINTF, [strcpy (pty_name, "/dev/ptmx");])
4698 dnl Push various streams modules onto a PTY channel. Used in process.c.
4699 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.])
4704 AH_TEMPLATE(SIGNALS_VIA_CHARACTERS, [Make process_send_signal work by
4705 "typing" a signal character on the pty.])
4708 dnl Perry Smith <pedz@ddivt1.austin.ibm.com> says this is correct for AIX.
4709 aix4-2 | cygwin | gnu | dragonfly | freebsd | netbsd | openbsd | darwin )
4710 AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4713 dnl 21 Jun 06: Eric Hanchrow <offby1@blarg.net> says this works.
4714 dnl FIXME Does gnu-kfreebsd have linux/version.h? It seems unlikely...
4715 gnu-linux | gnu-kfreebsd )
4717 AC_MSG_CHECKING([for signals via characters])
4718 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4719 #include <linux/version.h>
4720 #if LINUX_VERSION_CODE < 0x20400
4721 # error "Linux version too old"
4723 ]], [[]])], emacs_signals_via_chars=yes, emacs_signals_via_chars=no)
4725 AC_MSG_RESULT([$emacs_signals_via_chars])
4726 test $emacs_signals_via_chars = yes && AC_DEFINE(SIGNALS_VIA_CHARACTERS, 1)
4731 AH_TEMPLATE(TAB3, [Undocumented.])
4734 darwin) AC_DEFINE(TAB3, OXTABS) ;;
4736 gnu | dragonfly | freebsd | netbsd | openbsd )
4737 AC_DEFINE(TABDLY, OXTABS, [Undocumented.])
4738 AC_DEFINE(TAB3, OXTABS)
4741 gnu-linux | gnu-kfreebsd )
4742 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4746 ]], [[]])], AC_DEFINE(GC_MARK_SECONDARY_STACK(),
4747 [do { extern void *__libc_ia64_register_backing_store_base; __builtin_ia64_flushrs (); mark_memory (__libc_ia64_register_backing_store_base, __builtin_ia64_bsp ());} while (false)],
4748 [Mark a secondary stack, like the register stack on the ia64.]), [])
4752 AC_DEFINE(RUN_TIME_REMAP, 1, [Define if emacs.c needs to call
4753 run_time_remap; for HPUX.])
4758 dnl This won't be used automatically yet. We also need to know, at least,
4759 dnl that the stack is continuous.
4760 AH_TEMPLATE(GC_SETJMP_WORKS, [Define if setjmp is known to save all
4761 registers relevant for conservative garbage collection in the jmp_buf.])
4765 dnl Not all the architectures are tested, but there are Debian packages
4766 dnl for SCM and/or Guile on them, so the technique must work. See also
4767 dnl comments in alloc.c concerning setjmp and gcc.
4768 dnl Fixme: it's probably safe to just use the GCC conditional below.
4769 gnu-linux | gnu-kfreebsd )
4770 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4771 #if defined __i386__ || defined __sparc__ || defined __mc68000__ \
4772 || defined __alpha__ || defined __mips__ || defined __s390__ \
4773 || defined __arm__ || defined __powerpc__ || defined __amd64__ \
4774 || defined __ia64__ || defined __sh__
4777 # error "setjmp not known to work on this arch"
4779 ]], [[]])], AC_DEFINE(GC_SETJMP_WORKS, 1))
4784 if test x$GCC = xyes; then
4785 dnl GC_SETJMP_WORKS is nearly always appropriate for GCC.
4786 AC_DEFINE(GC_SETJMP_WORKS, 1)
4789 aix* | dragonfly | freebsd | netbsd | openbsd | sol2* )
4790 AC_DEFINE(GC_SETJMP_WORKS, 1)
4795 dnl In a weird quirk, MS runtime uses _setjmp and longjmp.
4796 AC_CACHE_CHECK([for _setjmp], [emacs_cv_func__setjmp],
4799 [[#include <setjmp.h>
4801 # define _longjmp longjmp
4806 _longjmp (j, 1);]])],
4807 [emacs_cv_func__setjmp=yes],
4808 [emacs_cv_func__setjmp=no])])
4809 if test $emacs_cv_func__setjmp = yes; then
4810 AC_DEFINE([HAVE__SETJMP], 1, [Define to 1 if _setjmp and _longjmp work.])
4813 # We need to preserve signal mask to handle C stack overflows.
4814 AC_CACHE_CHECK([for sigsetjmp], [emacs_cv_func_sigsetjmp],
4817 [[#include <setjmp.h>
4820 if (! sigsetjmp (j, 1))
4821 siglongjmp (j, 1);]])],
4822 [emacs_cv_func_sigsetjmp=yes],
4823 [emacs_cv_func_sigsetjmp=no])])
4824 if test $emacs_cv_func_sigsetjmp = yes; then
4825 AC_DEFINE([HAVE_SIGSETJMP], 1,
4826 [Define to 1 if sigsetjmp and siglongjmp work.])
4829 case $emacs_cv_func_sigsetjmp,$emacs_cv_alternate_stack,$opsys in
4830 yes,yes,* | *,*,mingw32)
4831 AC_DEFINE([HAVE_STACK_OVERFLOW_HANDLING], 1,
4832 [Define to 1 if C stack overflow can be handled in some cases.]);;
4837 dnl TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
4838 dnl subprocesses the usual way. But TIOCSIGNAL does work for PTYs,
4839 dnl and this is all we need.
4840 AC_DEFINE(TIOCSIGSEND, TIOCSIGNAL, [Some platforms redefine this.])
4847 dnl Used in xfaces.c.
4848 AC_DEFINE(XOS_NEEDS_TIME_H, 1, [Compensate for a bug in Xos.h on
4849 some systems, where it requires time.h.])
4854 dnl Define symbols to identify the version of Unix this is.
4855 dnl Define all the symbols that apply correctly.
4856 AH_TEMPLATE(DOS_NT, [Define if the system is MS DOS or MS Windows.])
4857 AH_TEMPLATE(MSDOS, [Define if the system is MS DOS.])
4858 AH_TEMPLATE(USG, [Define if the system is compatible with System III.])
4859 AH_TEMPLATE(USG5_4, [Define if the system is compatible with System V Release 4.])
4864 dnl This symbol should be defined on AIX Version 3 ???????
4865 AC_PREPROC_IFELSE([AC_LANG_PROGRAM([[
4867 # error "_AIX not defined"
4869 ]], [[]])], [], AC_DEFINE(_AIX, [], [Define if the system is AIX.]))
4873 AC_DEFINE(CYGWIN, 1, [Define if the system is Cygwin.])
4877 dnl Not __APPLE__, as this may not be defined on non-macOS Darwin.
4878 dnl Not DARWIN, because Panther and lower CoreFoundation.h use DARWIN to
4879 dnl distinguish macOS from pure Darwin.
4880 AC_DEFINE(DARWIN_OS, [], [Define if the system is Darwin.])
4883 gnu-linux | gnu-kfreebsd )
4885 AC_DEFINE(GNU_LINUX, [], [Define if ths system is compatible with GNU/Linux.])
4890 AC_DEFINE(HPUX, [], [Define if the system is HPUX.])
4894 AC_DEFINE(DOS_NT, [])
4895 AC_DEFINE(WINDOWSNT, 1, [Define if compiling for native MS Windows.])
4896 if test "x$ac_enable_checking" != "x" ; then
4897 AC_DEFINE(EMACSDEBUG, 1, [Define to 1 to enable w32 debug facilities.])
4903 AC_DEFINE(USG5_4, [])
4904 AC_DEFINE(SOLARIS2, [], [Define if the system is Solaris.])
4909 AC_DEFINE(USG5_4, [])
4913 AC_CACHE_CHECK([for usable FIONREAD], [emacs_cv_usable_FIONREAD],
4916 dnl BUILD 9008 - FIONREAD problem still exists in X-Windows.
4917 emacs_cv_usable_FIONREAD=no
4921 emacs_cv_usable_FIONREAD=yes
4926 [AC_LANG_PROGRAM([[#include <sys/types.h>
4927 #include <sys/ioctl.h>
4929 # include <sys/filio.h>
4932 [[int foo = ioctl (0, FIONREAD, &foo);]])],
4933 [emacs_cv_usable_FIONREAD=yes],
4934 [emacs_cv_usable_FIONREAD=no])
4937 if test $emacs_cv_usable_FIONREAD = yes; then
4938 AC_DEFINE([USABLE_FIONREAD], [1], [Define to 1 if FIONREAD is usable.])
4940 if test $emacs_broken_SIGIO = no; then
4941 AC_CACHE_CHECK([for usable SIGIO], [emacs_cv_usable_SIGIO],
4943 [AC_LANG_PROGRAM([[#include <fcntl.h>
4946 [[int foo = SIGIO | F_SETFL | FASYNC;]])],
4947 [emacs_cv_usable_SIGIO=yes],
4948 [emacs_cv_usable_SIGIO=no])],
4949 [emacs_cv_usable_SIGIO=yes],
4950 [emacs_cv_usable_SIGIO=no])
4951 if test $emacs_cv_usable_SIGIO = yes; then
4952 AC_DEFINE([USABLE_SIGIO], [1], [Define to 1 if SIGIO is usable.])
4959 dnl It works to open the pty's tty in the parent (Emacs), then
4960 dnl close and reopen it in the child.
4961 AC_DEFINE(USG_SUBTTY_WORKS, 1, [Define for USG systems where it
4962 works to open a pty's tty in the parent process, then close and
4963 reopen it in the child.])
4967 AC_DEFINE(_STRUCTURED_PROC, 1, [Needed for system_process_attributes
4972 # Set up the CFLAGS for real compilation, so we can substitute it.
4973 CFLAGS="$REAL_CFLAGS"
4974 CPPFLAGS="$REAL_CPPFLAGS"
4977 ## Hack to detect a buggy GCC version.
4978 if test "$GCC" = yes && \
4979 $CC --version 2> /dev/null | grep 'gcc.* 4.5.0' >/dev/null; then
4981 *-fno-optimize-sibling-calls*) ;;
4983 AC_MSG_ERROR([GCC 4.5.0 has problems compiling Emacs; see etc/PROBLEMS.]);;
4987 version=$PACKAGE_VERSION
4989 copyright="Copyright (C) 2017 Free Software Foundation, Inc."
4990 AC_DEFINE_UNQUOTED(COPYRIGHT, ["$copyright"],
4991 [Short copyright string for this version of Emacs.])
4994 ### Specify what sort of things we'll be editing into Makefile and config.h.
4995 ### Use configuration here uncanonicalized to avoid exceeding size limits.
4997 AC_SUBST(configuration)
5002 AC_SUBST(exec_prefix)
5005 AC_SUBST(sharedstatedir)
5006 AC_SUBST(libexecdir)
5010 AC_SUBST(standardlisppath)
5011 AC_SUBST(locallisppath)
5013 AC_SUBST(x_default_search_path)
5015 AC_SUBST(archlibdir)
5021 ## FIXME? Nothing uses @LD_SWITCH_X_SITE@.
5022 ## src/Makefile.in did add LD_SWITCH_X_SITE (as a cpp define) to the
5023 ## end of LIBX_BASE, but nothing ever set it.
5024 AC_SUBST(LD_SWITCH_X_SITE)
5025 AC_SUBST(C_SWITCH_X_SITE)
5026 AC_SUBST(GNUSTEP_CFLAGS)
5028 ## Used in lwlib/Makefile.in.
5029 AC_SUBST(X_TOOLKIT_TYPE)
5031 AC_SUBST(ns_appbindir)
5032 AC_SUBST(ns_appresdir)
5034 AC_SUBST(GNU_OBJC_CFLAGS)
5035 AC_SUBST(OTHER_FILES)
5037 if test -n "${term_header}"; then
5038 AC_DEFINE_UNQUOTED(TERM_HEADER, "${term_header}",
5039 [Define to the header for the built-in window system.])
5042 AC_DEFINE_UNQUOTED(EMACS_CONFIGURATION, "${canonical}",
5043 [Define to the canonical Emacs configuration name.])
5044 AC_DEFINE_UNQUOTED(EMACS_CONFIG_OPTIONS, "${emacs_config_options}",
5045 [Define to the options passed to configure.])
5050 if test "${HAVE_X_WINDOWS}" = "yes" ; then
5051 AC_DEFINE(HAVE_X_WINDOWS, 1,
5052 [Define to 1 if you want to use the X window system.])
5054 XOBJ="xterm.o xfns.o xselect.o xrdb.o xsmfns.o xsettings.o"
5056 if test "$HAVE_CAIRO" = "yes"; then
5057 FONT_OBJ="ftfont.o ftcrfont.o"
5058 elif test "$HAVE_XFT" = "yes"; then
5059 FONT_OBJ="$FONT_OBJ ftfont.o xftfont.o ftxfont.o"
5060 elif test "$HAVE_FREETYPE" = "yes"; then
5061 FONT_OBJ="$FONT_OBJ ftfont.o ftxfont.o"
5071 if test "${USE_X_TOOLKIT}" != "none" ; then
5073 AC_DEFINE(USE_X_TOOLKIT, 1, [Define to 1 if using an X toolkit.])
5074 if test "${USE_X_TOOLKIT}" = "LUCID"; then
5075 AC_DEFINE(USE_LUCID, 1, [Define to 1 if using the Lucid X toolkit.])
5076 elif test "${USE_X_TOOLKIT}" = "MOTIF"; then
5077 AC_DEFINE(USE_MOTIF, 1, [Define to 1 if using the Motif X toolkit.])
5081 ## Paul Abrahams <abrahams at equinox.shaysnet.com> says this is needed.
5082 MOTIF_LIBW="$MOTIF_LIBW -lXpm"
5086 ## Richard Anthony Ryan <ryanr at ellingtn.ftc.nrcs.usda.gov>
5087 ## says -lXimp is needed in UNIX_SV ... 4.2 1.1.2.
5088 MOTIF_LIBW="MOTIF_LIBW -lXimp"
5092 ## olson@mcs.anl.gov says -li18n is needed by -lXm.
5093 MOTIF_LIBW="$MOTIF_LIBW -li18n"
5096 MOTIF_LIBW="$MOTIF_LIBW $LIBXP"
5099 AC_SUBST(WIDGET_OBJ)
5102 case "$USE_X_TOOLKIT" in
5103 MOTIF) TOOLKIT_LIBW="$MOTIF_LIBW" ;;
5104 LUCID) TOOLKIT_LIBW="$LUCID_LIBW" ;;
5105 none) test "x$HAVE_GTK" = "xyes" && TOOLKIT_LIBW="$GTK_LIBS" ;;
5107 if test "$HAVE_XWIDGETS" = "yes"; then
5108 TOOLKIT_LIBW="$TOOLKIT_LIBW -lXcomposite"
5110 AC_SUBST(TOOLKIT_LIBW)
5112 if test "${opsys}" != "mingw32"; then
5113 if test "$USE_X_TOOLKIT" = "none"; then
5114 LIBXT_OTHER="\$(LIBXSM)"
5116 LIBXT_OTHER="\$(LIBXMU) -lXt \$(LIBXTR6) -lXext"
5119 AC_SUBST(LIBXT_OTHER)
5121 if test "${HAVE_X11}" = "yes" ; then
5122 AC_DEFINE(HAVE_X11, 1,
5123 [Define to 1 if you want to use version 11 of X windows.])
5124 LIBX_OTHER="\$(LIBXT) \$(LIBX_EXTRA)"
5128 AC_SUBST(LIBX_OTHER)
5131 if test "$HAVE_GTK" = yes || test "$HAVE_X11" != yes; then
5133 elif test "$USE_X_TOOLKIT" = none; then
5135 LIBXMENU='$(oldXMenudir)/libXMenu11.a'
5136 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS oldXMenu"
5138 LIBXMENU='$(lwlibdir)/liblw.a'
5139 AUTODEPEND_PARENTS="$AUTODEPEND_PARENTS lwlib"
5143 AC_CACHE_CHECK([for struct alignment],
5144 [emacs_cv_struct_alignment],
5146 [AC_LANG_PROGRAM([[#include <stddef.h>
5147 struct __attribute__ ((aligned (8))) s { char c; };
5148 struct t { char c; struct s s; };
5149 char verify[offsetof (struct t, s) == 8 ? 1 : -1];
5151 [emacs_cv_struct_alignment=yes],
5152 [emacs_cv_struct_alignment=no])])
5153 if test "$emacs_cv_struct_alignment" = yes; then
5154 AC_DEFINE([HAVE_STRUCT_ATTRIBUTE_ALIGNED], 1,
5155 [Define to 1 if 'struct __attribute__ ((aligned (N)))' aligns the
5156 structure to an N-byte boundary.])
5159 if test "${GNU_MALLOC}" = "yes" ; then
5160 AC_DEFINE(GNU_MALLOC, 1,
5161 [Define to 1 if you want to use the GNU memory allocator.])
5165 if test "${REL_ALLOC}" = "yes" ; then
5166 AC_DEFINE(REL_ALLOC, 1,
5167 [Define REL_ALLOC if you want to use the relocating allocator for
5170 test "$system_malloc" != "yes" && RALLOC_OBJ=ralloc.o
5172 AC_SUBST(RALLOC_OBJ)
5174 if test "$opsys" = "cygwin"; then
5175 CYGWIN_OBJ="cygw32.o"
5176 ## Cygwin differs because of its unexec().
5178 POST_ALLOC_OBJ=lastfile.o
5179 elif test "$opsys" = "mingw32"; then
5182 POST_ALLOC_OBJ=lastfile.o
5185 PRE_ALLOC_OBJ=lastfile.o
5188 AC_SUBST(CYGWIN_OBJ)
5189 AC_SUBST(PRE_ALLOC_OBJ)
5190 AC_SUBST(POST_ALLOC_OBJ)
5192 dnl Call this 'FORTIFY_SOUR' so that it sorts before the 'FORTIFY_SOURCE'
5193 dnl verbatim defined above. The tricky name is apropos, as this hack
5194 dnl makes Fortify go sour!
5195 AH_VERBATIM([FORTIFY_SOUR],
5196 [/* Without the following workaround, Emacs runs slowly on OS X 10.8.
5197 The workaround disables some useful run-time checking, so it
5198 should be conditional to the platforms with the performance bug.
5199 Perhaps Apple will fix this some day; also see m4/extern-inline.m4. */
5200 #if defined __APPLE__ && defined __GNUC__
5201 # ifndef _DONT_USE_CTYPE_INLINE_
5202 # define _DONT_USE_CTYPE_INLINE_
5204 # ifndef _FORTIFY_SOURCE
5205 # define _FORTIFY_SOURCE 0
5210 # If user asks to omit features, disable optional features that gnulib
5211 # might otherwise enable.
5212 if test "$with_features" = no && test "$enable_acl" != yes; then
5216 # Configure gnulib. Although this does not affect CFLAGS or LIBS permanently.
5217 # it temporarily reverts them to their pre-pkg-config values,
5218 # because gnulib needs to work with both src (which uses the
5219 # pkg-config stuff) and lib-src (which does not). For example, gnulib
5220 # may need to determine whether LIB_CLOCK_GETTIME should contain -lrt,
5221 # and it therefore needs to run in an environment where LIBS does not
5222 # already contain -lrt merely because 'pkg-config --libs' printed '-lrt'
5223 # for some package unrelated to lib-src.
5226 CFLAGS=$pre_PKG_CONFIG_CFLAGS
5227 LIBS="$LIB_PTHREAD $pre_PKG_CONFIG_LIBS"
5228 gl_ASSERT_NO_GNULIB_POSIXCHECK
5229 gl_ASSERT_NO_GNULIB_TESTS
5234 if test "${opsys}" = "mingw32"; then
5235 CPPFLAGS="$CPPFLAGS -DUSE_CRT_DLL=1 -I \${abs_top_srcdir}/nt/inc"
5236 # Remove unneeded switches from the value of CC that goes to Makefiles
5237 CC=`AS_ECHO(["$CC"]) | sed -e "s,$GCC_TEST_OPTIONS,,"`
5241 aix4-2) LD_SWITCH_SYSTEM_TEMACS="-Wl,-bnodelcsect" ;;
5243 cygwin) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000" ;;
5246 ## The -headerpad option tells ld (see man page) to leave room at the
5247 ## end of the header for adding load commands. Needed for dumping.
5248 ## 0x1000 is enough for roughly 52 load commands on the x86_64
5249 ## architecture (where they are 78 bytes each). The actual number of
5250 ## load commands added is not consistent but normally ranges from
5251 ## about 14 to about 34. Setting it high gets us plenty of slop and
5252 ## only costs about 1.5K of wasted binary space.
5253 headerpad_extra=1000
5254 if test "$HAVE_NS" = "yes"; then
5255 libs_nsgui="-framework AppKit"
5256 if test "$NS_IMPL_COCOA" = "yes"; then
5257 libs_nsgui="$libs_nsgui -framework IOKit"
5262 LD_SWITCH_SYSTEM_TEMACS="-fno-pie -prebind $libs_nsgui -Xlinker -headerpad -Xlinker $headerpad_extra"
5264 ## This is here because src/Makefile.in did some extra fiddling around
5265 ## with LD_SWITCH_SYSTEM. It seems cleaner to put this in
5266 ## LD_SWITCH_SYSTEM_TEMACS instead,
5267 test "x$LD_SWITCH_SYSTEM" = "x" && test "x$GCC" != "xyes" && \
5268 LD_SWITCH_SYSTEM_TEMACS="-X $LD_SWITCH_SYSTEM_TEMACS"
5271 ## LD_SWITCH_X_SITE_RPATH is a -rpath option saying where to
5272 ## find X at run-time.
5273 ## When handled by cpp, this was in LD_SWITCH_SYSTEM. However, at the
5274 ## point where configure sourced the s/*.h file, LD_SWITCH_X_SITE_RPATH
5275 ## had not yet been defined and was expanded to null. Hence LD_SWITCH_SYSTEM
5276 ## had different values in configure (in ac_link) and src/Makefile.in.
5277 ## It seems clearer therefore to put this piece in LD_SWITCH_SYSTEM_TEMACS.
5278 gnu*) LD_SWITCH_SYSTEM_TEMACS="\$(LD_SWITCH_X_SITE_RPATH)" ;;
5281 ## Is it any better under MinGW64 to relocate emacs into higher addresses?
5282 case "$canonical" in
5283 x86_64-*-*) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x400000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5284 *) LD_SWITCH_SYSTEM_TEMACS="-Wl,-stack,0x00800000 -Wl,-heap,0x00100000 -Wl,-image-base,0x01000000 -Wl,-entry,__start -Wl,-Map,./temacs.map" ;;
5288 *) LD_SWITCH_SYSTEM_TEMACS= ;;
5291 # -no-pie or -nopie fixes a temacs segfault on Gentoo, OpenBSD,
5292 # Ubuntu, and other systems with "hardened" GCC configurations for
5293 # some reason (Bug#18784). We don't know why this works, but not
5294 # segfaulting is better than segfaulting. Use ac_c_werror_flag=yes
5295 # when trying the option, otherwise clang keeps warning that it does
5296 # not understand it, and pre-4.6 GCC has a similar problem
5297 # (Bug#20338). Prefer -no-pie to -nopie, as -no-pie is the
5298 # spelling used by GCC 6.1.0 and later (Bug#24682).
5300 [for $CC option to disable position independent executables],
5301 [emacs_cv_prog_cc_no_pie],
5302 [emacs_save_c_werror_flag=$ac_c_werror_flag
5303 emacs_save_LDFLAGS=$LDFLAGS
5304 ac_c_werror_flag=yes
5305 for emacs_cv_prog_cc_no_pie in -no-pie -nopie no; do
5306 test $emacs_cv_prog_cc_no_pie = no && break
5307 LDFLAGS="$emacs_save_LDFLAGS $emacs_cv_prog_cc_no_pie"
5308 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [break])
5310 ac_c_werror_flag=$emacs_save_c_werror_flag
5311 LDFLAGS=$emacs_save_LDFLAGS])
5312 if test "$emacs_cv_prog_cc_no_pie" != no; then
5313 LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS $emacs_cv_prog_cc_no_pie"
5316 if test x$ac_enable_profiling != x ; then
5318 *freebsd | gnu-linux) ;;
5319 *) LD_SWITCH_SYSTEM_TEMACS="$LD_SWITCH_SYSTEM_TEMACS -pg" ;;
5323 LD_SWITCH_SYSTEM_TEMACS="$LDFLAGS_NOCOMBRELOC $LD_SWITCH_SYSTEM_TEMACS"
5325 AC_SUBST(LD_SWITCH_SYSTEM_TEMACS)
5327 ## Common for all window systems
5328 if test "$window_system" != "none"; then
5329 AC_DEFINE(HAVE_WINDOW_SYSTEM, 1, [Define if you have a window system.])
5330 AC_DEFINE(POLL_FOR_INPUT, 1, [Define if you poll periodically to detect C-g.])
5331 WINDOW_SYSTEM_OBJ="fontset.o fringe.o image.o"
5334 AC_SUBST(WINDOW_SYSTEM_OBJ)
5336 AH_TOP([/* GNU Emacs site configuration template file.
5338 Copyright (C) 1988, 1993-1994, 1999-2002, 2004-2017
5339 Free Software Foundation, Inc.
5341 This file is part of GNU Emacs.
5343 GNU Emacs is free software: you can redistribute it and/or modify
5344 it under the terms of the GNU General Public License as published by
5345 the Free Software Foundation, either version 3 of the License, or (at
5346 your option) any later version.
5348 GNU Emacs is distributed in the hope that it will be useful,
5349 but WITHOUT ANY WARRANTY; without even the implied warranty of
5350 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
5351 GNU General Public License for more details.
5353 You should have received a copy of the GNU General Public License
5354 along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. */
5357 /* No code in Emacs #includes config.h twice, but some bits of code
5358 intended to work with other packages as well (like gmalloc.c)
5359 think they can include it as many times as they like. */
5360 #ifndef EMACS_CONFIG_H
5361 #define EMACS_CONFIG_H
5364 AH_BOTTOM([#include <conf_post.h>
5366 #endif /* EMACS_CONFIG_H */
5375 #### Report on what we decided to do.
5376 #### Report GTK as a toolkit, even if it doesn't use Xt.
5377 #### It makes printing result more understandable as using GTK sets
5378 #### toolkit_scroll_bars to yes by default.
5379 if test "${HAVE_GTK}" = "yes"; then
5380 USE_X_TOOLKIT="$USE_GTK_TOOLKIT"
5383 if test $USE_ACL -ne 0; then
5384 ACL_SUMMARY="yes $LIB_ACL"
5389 emacs_standard_dirs='Standard dirs'
5391 Configured for '${canonical}'.
5393 Where should the build process find the source code? ${srcdir}
5394 What compiler should emacs be built with? ${CC} ${CFLAGS}
5395 Should Emacs use the GNU version of malloc? ${GNU_MALLOC}${GNU_MALLOC_reason}
5396 Should Emacs use a relocating allocator for buffers? ${REL_ALLOC}
5397 Should Emacs use mmap(2) for buffer allocation? $use_mmap_for_buffers
5398 What window system should Emacs use? ${window_system}
5399 What toolkit should Emacs use? ${USE_X_TOOLKIT}
5400 Where do we find X Windows header files? ${x_includes:-$emacs_standard_dirs}
5401 Where do we find X Windows libraries? ${x_libraries:-$emacs_standard_dirs}"])
5404 emacs_config_features=
5405 for opt in XAW3D XPM JPEG TIFF GIF PNG RSVG CAIRO IMAGEMAGICK SOUND GPM DBUS \
5406 GCONF GSETTINGS NOTIFY ACL LIBSELINUX GNUTLS LIBXML2 FREETYPE M17N_FLT \
5407 LIBOTF XFT ZLIB TOOLKIT_SCROLL_BARS X_TOOLKIT OLDXMENU X11 NS MODULES \
5408 XWIDGETS LIBSYSTEMD CANNOT_DUMP; do
5411 CANNOT_DUMP) eval val=\${$opt} ;;
5412 NOTIFY|ACL) eval val=\${${opt}_SUMMARY} ;;
5413 TOOLKIT_SCROLL_BARS|X_TOOLKIT) eval val=\${USE_$opt} ;;
5414 *) eval val=\${HAVE_$opt} ;;
5417 xno|xnone|x) continue ;;
5422 GTK*|LUCID|MOTIF) opt=$val ;;
5427 AS_VAR_APPEND([emacs_config_features], ["$optsep$opt"])
5430 AC_DEFINE_UNQUOTED(EMACS_CONFIG_FEATURES, "${emacs_config_features}",
5431 [Summary of some of the main features enabled by configure.])
5433 AS_ECHO([" Does Emacs use -lXaw3d? ${HAVE_XAW3D}
5434 Does Emacs use -lXpm? ${HAVE_XPM}
5435 Does Emacs use -ljpeg? ${HAVE_JPEG}
5436 Does Emacs use -ltiff? ${HAVE_TIFF}
5437 Does Emacs use a gif library? ${HAVE_GIF} $LIBGIF
5438 Does Emacs use a png library? ${HAVE_PNG} $LIBPNG
5439 Does Emacs use -lrsvg-2? ${HAVE_RSVG}
5440 Does Emacs use cairo? ${HAVE_CAIRO}
5441 Does Emacs use imagemagick? ${HAVE_IMAGEMAGICK}
5442 Does Emacs support sound? ${HAVE_SOUND}
5443 Does Emacs use -lgpm? ${HAVE_GPM}
5444 Does Emacs use -ldbus? ${HAVE_DBUS}
5445 Does Emacs use -lgconf? ${HAVE_GCONF}
5446 Does Emacs use GSettings? ${HAVE_GSETTINGS}
5447 Does Emacs use a file notification library? ${NOTIFY_SUMMARY}
5448 Does Emacs use access control lists? ${ACL_SUMMARY}
5449 Does Emacs use -lselinux? ${HAVE_LIBSELINUX}
5450 Does Emacs use -lgnutls? ${HAVE_GNUTLS}
5451 Does Emacs use -lxml2? ${HAVE_LIBXML2}
5452 Does Emacs use -lfreetype? ${HAVE_FREETYPE}
5453 Does Emacs use -lm17n-flt? ${HAVE_M17N_FLT}
5454 Does Emacs use -lotf? ${HAVE_LIBOTF}
5455 Does Emacs use -lxft? ${HAVE_XFT}
5456 Does Emacs use -lsystemd? ${HAVE_LIBSYSTEMD}
5457 Does Emacs directly use zlib? ${HAVE_ZLIB}
5458 Does Emacs have dynamic modules support? ${HAVE_MODULES}
5459 Does Emacs use toolkit scroll bars? ${USE_TOOLKIT_SCROLL_BARS}
5460 Does Emacs support Xwidgets (requires gtk3)? ${HAVE_XWIDGETS}
5461 Does Emacs have threading support in lisp? ${threads_enabled}
5464 if test -n "${EMACSDATA}"; then
5465 AS_ECHO([" Environment variable EMACSDATA set to: $EMACSDATA"])
5467 if test -n "${EMACSDOC}"; then
5468 AS_ECHO([" Environment variable EMACSDOC set to: $EMACSDOC"])
5473 if test "$HAVE_NS" = "yes"; then
5475 AS_ECHO(["You must run \"${MAKE-make} install\" in order to test the built application.
5476 The installed application will go to nextstep/Emacs.app and can be
5477 run or moved from there."])
5478 if test "$EN_NS_SELF_CONTAINED" = "yes"; then
5479 echo "The application will be fully self-contained."
5481 AS_ECHO(["The lisp resources for the application will be installed under ${prefix}.
5482 You may need to run \"${MAKE-make} install\" with sudo. The application will fail
5483 to run if these resources are not installed."])
5488 if test "${opsys}" = "cygwin"; then
5490 1.5.*) AC_MSG_WARN([[building Emacs on Cygwin 1.5 is not supported.]])
5496 # Remove any trailing slashes in these variables.
5498 */) prefix=`AS_DIRNAME(["$prefix."])`;;
5500 case $exec_prefix in
5501 */) exec_prefix=`AS_DIRNAME(["$exec_prefix."])`;;
5504 if test "$HAVE_NS" = "yes"; then
5505 if test "$NS_IMPL_GNUSTEP" = yes; then
5506 AC_CONFIG_FILES([nextstep/GNUstep/Emacs.base/Resources/Info-gnustep.plist:nextstep/templates/Info-gnustep.plist.in \
5507 nextstep/GNUstep/Emacs.base/Resources/Emacs.desktop:nextstep/templates/Emacs.desktop.in])
5508 ns_check_file=Resources/Info-gnustep.plist
5510 AC_CONFIG_FILES([nextstep/Cocoa/Emacs.base/Contents/Info.plist:nextstep/templates/Info.plist.in \
5511 nextstep/Cocoa/Emacs.base/Contents/Resources/English.lproj/InfoPlist.strings:nextstep/templates/InfoPlist.strings.in])
5512 ns_check_file=Contents/Info.plist
5514 AC_SUBST(ns_check_file)
5517 AC_CONFIG_FILES([Makefile lib/gnulib.mk])
5519 dnl config.status treats $srcdir specially, so I think this is ok...
5520 AC_CONFIG_FILES([$srcdir/doc/man/emacs.1])
5522 m4_define([subdir_makefiles],
5523 [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])
5524 SUBDIR_MAKEFILES="subdir_makefiles"
5525 AC_CONFIG_FILES(subdir_makefiles)
5527 dnl test/ is not present in release tarfiles.
5528 opt_makefile=test/Makefile
5530 if test -f "$srcdir/$opt_makefile.in"; then
5531 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES $opt_makefile"
5532 dnl Again, it's best not to use a variable. Though you can add
5533 dnl ", [], [opt_makefile='$opt_makefile']" and it should work.
5534 AC_CONFIG_FILES([test/Makefile])
5538 dnl The admin/ directory used to be excluded from tarfiles.
5539 if test -d $srcdir/admin; then
5540 SUBDIR_MAKEFILES="$SUBDIR_MAKEFILES admin/charsets/Makefile admin/unidata/Makefile admin/grammars/Makefile"
5541 AC_CONFIG_FILES([admin/charsets/Makefile])
5542 AC_CONFIG_FILES([admin/unidata/Makefile])
5543 AC_CONFIG_FILES([admin/grammars/Makefile])
5547 SUBDIR_MAKEFILES_IN=`echo " ${SUBDIR_MAKEFILES}" | sed -e 's| | $(srcdir)/|g' -e 's|Makefile|Makefile.in|g'`
5549 AC_SUBST(SUBDIR_MAKEFILES_IN)
5551 dnl You might wonder (I did) why epaths.h is generated by running make,
5552 dnl rather than just letting configure generate it from epaths.in.
5553 dnl One reason is that the various paths are not fully expanded (see above);
5554 dnl e.g., gamedir='${localstatedir}/games/emacs'.
5555 dnl Secondly, the GNU Coding standards require that one should be able
5556 dnl to run 'make prefix=/some/where/else' and override the values set
5557 dnl by configure. This also explains the 'move-if-change' test and
5558 dnl the use of force in the 'epaths-force' rule in Makefile.in.
5559 AC_CONFIG_COMMANDS([src/epaths.h], [
5560 if test "${opsys}" = "mingw32"; then
5561 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force-w32
5563 ${MAKE-make} MAKEFILE_NAME=do-not-make-Makefile epaths-force
5564 fi || AC_MSG_ERROR(['src/epaths.h' could not be made.])
5565 ], [GCC="$GCC" CPPFLAGS="$CPPFLAGS" opsys="$opsys"])
5567 dnl NB we have to cheat and use the ac_... version because abs_top_srcdir
5568 dnl is not yet set, sigh. Or we could use ../$srcdir/src/.gdbinit,
5570 AC_CONFIG_COMMANDS([src/.gdbinit], [
5571 if test ! -f src/.gdbinit && test -f "$srcdir/src/.gdbinit"; then
5572 AS_ECHO(["source $ac_abs_top_srcdir/src/.gdbinit"]) > src/.gdbinit
5576 dnl Perhaps this would be better named doc-emacs-emacsver.texi?
5577 dnl See comments for etc-refcards-emacsver.tex.
5578 dnl Since we get a doc/emacs directory generated anyway, for the Makefile,
5579 dnl it is not quite the same. But we are generating in $srcdir.
5580 AC_CONFIG_COMMANDS([doc/emacs/emacsver.texi], [
5581 ${MAKE-make} -s --no-print-directory -C doc/emacs doc-emacsver || \
5582 AC_MSG_ERROR(['doc/emacs/emacsver.texi' could not be made.])
5585 dnl If we give this the more natural name, etc/refcards/emacsver.texi,
5586 dnl then a directory etc/refcards is created in the build directory,
5587 dnl which is probably harmless, but confusing (in out-of-tree builds).
5588 dnl (If we were to generate etc/refcards/Makefile, this might change.)
5589 dnl It is really $srcdir/etc/refcards/emacsver.tex that we generate.
5590 AC_CONFIG_COMMANDS([etc-refcards-emacsver.tex], [
5591 ${MAKE-make} -s MAKEFILE_NAME=do-not-make-Makefile etc-emacsver || \
5592 AC_MSG_ERROR(['etc/refcards/emacsver.tex' could not be made.])
5595 if test $AUTO_DEPEND = yes; then
5596 for dir in $AUTODEPEND_PARENTS; do
5597 AS_MKDIR_P([$dir/deps])
5603 if test ! "$with_mailutils"; then
5604 if test "$with_pop" = yes; then
5605 AC_MSG_WARN([This configuration installs a 'movemail' program
5606 that retrieves POP3 email via only insecure channels.
5607 To omit insecure POP3, you can use '$0 --without-pop'.])
5612 # Don't suggest GNU Mailutils, as it hasn't been ported.
5615 emacs_fix_movemail="use '$0 --with-mailutils'"
5616 case `(movemail --version) 2>/dev/null` in
5618 *) emacs_fix_movemail="install GNU Mailutils
5619 <http://mailutils.org> and $emacs_fix_movemail";;
5621 AC_MSG_NOTICE([You might want to $emacs_fix_movemail.]);;
5625 test "$MAKE" = make || AC_MSG_NOTICE([Now you can run '$MAKE'.])