/
configure.ac
5506 lines (4942 loc) · 183 KB
/
configure.ac
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
dnl Autoconf script for GNU Emacs
dnl To rebuild the 'configure' script from this, execute the command
dnl autoconf
dnl in the directory containing this script.
dnl If you changed any AC_DEFINES, also run autoheader.
dnl
dnl Copyright (C) 1994-1996, 1999-2017 Free Software Foundation, Inc.
dnl
dnl This file is part of GNU Emacs.
dnl
dnl GNU Emacs is free software: you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation, either version 3 of the License, or
dnl (at your option) any later version.
dnl
dnl GNU Emacs is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
dnl GNU General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License
dnl along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
AC_PREREQ(2.65)
dnl Note this is parsed by (at least) make-dist and lisp/cedet/ede/emacs.el.
AC_INIT(GNU Emacs, 25.3.50, bug-gnu-emacs@gnu.org)
dnl Set emacs_config_options to the options of 'configure', quoted for the shell,
dnl and then quoted again for a C string. Separate options with spaces.
dnl Add some environment variables, if they were passed via the environment
dnl rather than on the command-line.
emacs_config_options=
optsep=
dnl This is the documented way to record the args passed to configure,
dnl rather than $ac_configure_args.
for opt in "$@" CFLAGS CPPFLAGS LDFLAGS; do
case $opt in
-n | --no-create | --no-recursion)
continue ;;
CFLAGS | CPPFLAGS | LDFLAGS)
eval 'test "${'$opt'+set}" = set' || continue
case " $*" in
*" $opt="*) continue ;;
esac
eval opt=$opt=\$$opt ;;
esac
emacs_shell_specials=$IFS\''"#$&()*;<>?@<:@\\`{|~'
case $opt in
*[["$emacs_shell_specials"]]*)
case $opt in
*\'*)
emacs_quote_apostrophes="s/'/'\\\\''/g"
opt=`AS_ECHO(["$opt"]) | sed "$emacs_quote_apostrophes"` ;;
esac
opt="'$opt'"
case $opt in
*[['"\\']]*)
emacs_quote_for_c='s/[["\\]]/\\&/g; $!s/$/\\n\\/'
opt=`AS_ECHO(["$opt"]) | sed "$emacs_quote_for_c"` ;;
esac ;;
esac
AS_VAR_APPEND([emacs_config_options], ["$optsep$opt"])
optsep=' '
done
AC_CONFIG_HEADERS(src/config.h:src/config.in)
AC_CONFIG_SRCDIR(src/lisp.h)
AC_CONFIG_AUX_DIR(build-aux)
dnl automake 1.13 and later understand this, making -I m4 unnecessary.
dnl With older versions this is a no-op.
AC_CONFIG_MACRO_DIR(m4)
xcsdkdir=
AC_CHECK_PROGS(XCRUN, [xcrun])
if test -n "$XCRUN"; then
if test -z "$MAKE"; then
dnl Call the variable MAKE_PROG, not MAKE, to avoid confusion with
dnl the usual MAKE variable that 'make' itself uses.
AC_CHECK_PROG([MAKE_PROG], [make], [yes])
if test -z "$MAKE_PROG"; then
MAKE="$XCRUN MAKE"
export MAKE
xcsdkdir=`$XCRUN --show-sdk-path 2>/dev/null`
fi
fi
fi
dnl GNU Make is required, so don't test for its individual features.
am_cv_make_support_nested_variables=yes
AC_DEFUN([AC_PROG_MAKE_SET],
[SET_MAKE=
AC_SUBST([SET_MAKE])])
dnl Check for GNU Make and possibly set MAKE before running AM_INIT_AUTOMAKE.
[emacs_check_gnu_make ()
{
emacs_makeout=`($1 --version) 2>/dev/null` &&
case $emacs_makeout in
'GNU Make '3.8[1-9]* | 'GNU Make '3.9[0-9]* | \
'GNU Make '3.[1-9][0-9][0-9]* | 'GNU Make '[4-9]* | 'GNU Make '[1-9][0-9]* )
ac_path_MAKE_found=:;;
esac
}]
AC_CACHE_CHECK([for GNU Make], [ac_cv_path_MAKE],
[ac_path_MAKE_found=false
if test -n "$MAKE"; then
emacs_check_gnu_make "$MAKE"
ac_cv_path_MAKE=$MAKE
else
emacs_tried_make=false
emacs_tried_gmake=false
emacs_tried_gnumake=false
AC_PATH_PROGS_FEATURE_CHECK([MAKE], [make gmake gnumake],
[[emacs_check_gnu_make "$ac_path_MAKE"
if $ac_path_MAKE_found; then
# Use the fully-qualified program name only if the basename
# would not resolve to it.
if eval \$emacs_tried_$ac_prog; then
ac_cv_path_MAKE=$ac_path_MAKE
else
ac_cv_path_MAKE=$ac_prog
fi
fi
eval emacs_tried_$ac_prog=:]])
fi])
$ac_path_MAKE_found || {
AC_MSG_ERROR([[Building Emacs requires GNU Make, at least version 3.81.
If you have it installed under another name, configure with 'MAKE=...'.
For example, run '$0 MAKE=gnu-make'.]])
}
MAKE=$ac_cv_path_MAKE
export MAKE
dnl Fairly arbitrary, older versions might work too.
AM_INIT_AUTOMAKE(1.11)
dnl Canonicalize the configuration name.
AC_CANONICAL_HOST
case $host in
*-mingw*)
if test -z "$host_alias"; then
# No --host argument was given to 'configure'; therefore $host
# was set to a default value based on the build platform. But
# this default value may be wrong if we are building from a
# 64-bit MSYS[2] pre-configured to build 32-bit MinGW programs.
# Therefore, we'll try to get the right host platform from the
# compiler's target.
AC_MSG_CHECKING([the compiler's target])
if test -z "$CC"; then
cc=gcc
else
cc=$CC
fi
cc_target=`$cc -v 2>&1 | sed -n 's/Target: //p'`
case "$cc_target" in
*-*) host=$cc_target
;;
"") AC_MSG_ERROR([Impossible to obtain $cc compiler target.
Please explicitly provide --host.])
;;
*) AC_MSG_WARN([Compiler reported non-standard target.
Defaulting to $host.])
;;
esac
AC_MSG_RESULT([$host])
fi
. $srcdir/nt/mingw-cfg.site
case $srcdir in
/* | ?:*)
# srcdir is an absolute path. In this case, force the format
# "/c/foo/bar", to simplify later conversions to native Windows
# format ("c:/foo/bar").
srcdir=`cd "${srcdir}" && pwd -W`
# 'eval' pacifies strict POSIX non-MinGW shells (Bug#18612).
eval 'srcdir="/${srcdir:0:1}${srcdir:2}"'
;;
esac;;
esac
canonical=$host
configuration=${host_alias-${build_alias-$host}}
dnl Support for --program-prefix, --program-suffix and
dnl --program-transform-name options
AC_ARG_PROGRAM
dnl It is important that variables on the RHS not be expanded here,
dnl hence the single quotes. This is per the GNU coding standards, see
dnl (autoconf) Installation Directory Variables
dnl See also epaths.h below.
lispdir='${datadir}/emacs/${version}/lisp'
standardlisppath='${lispdir}'
locallisppath='${datadir}/emacs/${version}/site-lisp:'\
'${datadir}/emacs/site-lisp'
lisppath='${locallisppath}:${standardlisppath}'
etcdir='${datadir}/emacs/${version}/etc'
archlibdir='${libexecdir}/emacs/${version}/${configuration}'
etcdocdir='${datadir}/emacs/${version}/etc'
gamedir='${localstatedir}/games/emacs'
dnl Special option to disable the most of other options.
AC_ARG_WITH(all,
[AS_HELP_STRING([--without-all],
[omit almost all features and build
small executable with minimal dependencies])],
[with_features=$withval],
[with_features=yes])
dnl OPTION_DEFAULT_OFF(NAME, HELP-STRING)
dnl Create a new --with option that defaults to being disabled.
dnl NAME is the base name of the option. The shell variable with_NAME
dnl will be set to either the user's value (if the option is
dnl specified; 'yes' for a plain --with-NAME) or to 'no' (if the
dnl option is not specified). Note that the shell variable name is
dnl constructed as autoconf does, by replacing non-alphanumeric
dnl characters with "_".
dnl HELP-STRING is the help text for the option.
AC_DEFUN([OPTION_DEFAULT_OFF], [dnl
AC_ARG_WITH([$1],[AS_HELP_STRING([--with-$1],[$2])],[],[dnl
m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=no])dnl
])dnl
dnl OPTION_DEFAULT_ON(NAME, HELP-STRING)
dnl Create a new --with option that defaults to $with_features.
dnl NAME is the base name of the option. The shell variable with_NAME
dnl will be set either to 'no' (for a plain --without-NAME) or to
dnl 'yes' (if the option is not specified). Note that the shell
dnl variable name is constructed as autoconf does, by replacing
dnl non-alphanumeric characters with "_".
dnl HELP-STRING is the help text for the option.
AC_DEFUN([OPTION_DEFAULT_ON], [dnl
AC_ARG_WITH([$1],[AS_HELP_STRING([--without-$1],[$2])],[],[dnl
m4_bpatsubst([with_$1], [[^0-9a-z]], [_])=$with_features])dnl
])dnl
OPTION_DEFAULT_ON([pop],[don't support POP mail retrieval with movemail])
if test "$with_pop" = yes; then
AC_DEFINE(MAIL_USE_POP)
fi
AH_TEMPLATE(MAIL_USE_POP, [Define to support POP mail retrieval.])dnl
OPTION_DEFAULT_OFF([kerberos],[support Kerberos-authenticated POP])
if test "$with_kerberos" != no; then
AC_DEFINE(KERBEROS)
fi
AH_TEMPLATE(KERBEROS,
[Define to support Kerberos-authenticated POP mail retrieval.])dnl
OPTION_DEFAULT_OFF([kerberos5],[support Kerberos version 5 authenticated POP])
if test "${with_kerberos5}" != no; then
if test "${with_kerberos}" = no; then
with_kerberos=yes
AC_DEFINE(KERBEROS)
fi
AC_DEFINE(KERBEROS5, 1, [Define to use Kerberos 5 instead of Kerberos 4.])
fi
OPTION_DEFAULT_OFF([hesiod],[support Hesiod to get the POP server host])
dnl FIXME hesiod support may not be present, so it seems like an error
dnl to define, or at least use, this unconditionally.
if test "$with_hesiod" != no; then
AC_DEFINE(HESIOD, 1, [Define to support using a Hesiod database to find the POP server.])
fi
OPTION_DEFAULT_OFF([mail-unlink],[unlink, rather than empty, mail spool after reading])
if test "$with_mail_unlink" != no; then
AC_DEFINE(MAIL_UNLINK_SPOOL, 1, [Define to unlink, rather than empty, mail spool after reading.])
fi
AC_ARG_WITH([mailhost],[AS_HELP_STRING([--with-mailhost=HOSTNAME],
[string giving default POP mail host])],
AC_DEFINE_UNQUOTED(MAILHOST, ["$withval"], [String giving fallback POP mail host.]))
AC_ARG_WITH([sound],[AS_HELP_STRING([--with-sound=VALUE],
[compile with sound support (VALUE one of: yes, alsa, oss, bsd-ossaudio, no;
default yes). Only for GNU/Linux, FreeBSD, NetBSD, MinGW, Cygwin.])],
[ case "${withval}" in
yes|no|alsa|oss|bsd-ossaudio) val=$withval ;;
*) AC_MSG_ERROR(['--with-sound=$withval' is invalid;
this option's value should be 'yes', 'no', 'alsa', 'oss', or 'bsd-ossaudio'.])
;;
esac
with_sound=$val
],
[with_sound=$with_features])
dnl FIXME currently it is not the last.
dnl This should be the last --with option, because --with-x is
dnl added later on when we find the file name of X, and it's best to
dnl keep them together visually.
AC_ARG_WITH([x-toolkit],[AS_HELP_STRING([--with-x-toolkit=KIT],
[use an X toolkit (KIT one of: yes or gtk, gtk2, gtk3, lucid or athena, motif, no)])],
[ case "${withval}" in
y | ye | yes ) val=gtk ;;
n | no ) val=no ;;
l | lu | luc | luci | lucid ) val=lucid ;;
a | at | ath | athe | athen | athena ) val=athena ;;
m | mo | mot | moti | motif ) val=motif ;;
g | gt | gtk ) val=gtk ;;
gtk2 ) val=gtk2 ;;
gtk3 ) val=gtk3 ;;
* )
AC_MSG_ERROR(['--with-x-toolkit=$withval' is invalid;
this option's value should be 'yes', 'no', 'lucid', 'athena', 'motif', 'gtk',
'gtk2' or 'gtk3'. 'yes' and 'gtk' are synonyms.
'athena' and 'lucid' are synonyms.])
;;
esac
with_x_toolkit=$val
])
OPTION_DEFAULT_OFF([wide-int], [prefer wide Emacs integers (typically 62-bit); allows buffer and string size up to 2GB on 32-bit hosts, at the cost of 10% to 30% slowdown of Lisp interpreter and larger memory footprint])
if test "$with_wide_int" = yes; then
AC_DEFINE([WIDE_EMACS_INT], 1, [Use long long for EMACS_INT if available.])
fi
dnl _ON results in a '--without' option in the --help output, so
dnl the help text should refer to "don't compile", etc.
with_xpm_set=${with_xpm+set}
OPTION_DEFAULT_ON([xpm],[don't compile with XPM image support])
OPTION_DEFAULT_ON([jpeg],[don't compile with JPEG image support])
OPTION_DEFAULT_ON([tiff],[don't compile with TIFF image support])
OPTION_DEFAULT_ON([gif],[don't compile with GIF image support])
OPTION_DEFAULT_ON([png],[don't compile with PNG image support])
OPTION_DEFAULT_ON([rsvg],[don't compile with SVG image support])
OPTION_DEFAULT_OFF([cairo],[compile with Cairo drawing (experimental)])
OPTION_DEFAULT_ON([xml2],[don't compile with XML parsing support])
OPTION_DEFAULT_ON([imagemagick],[don't compile with ImageMagick image support])
OPTION_DEFAULT_ON([xft],[don't use XFT for anti aliased fonts])
OPTION_DEFAULT_ON([libotf],[don't use libotf for OpenType font support])
OPTION_DEFAULT_ON([m17n-flt],[don't use m17n-flt for text shaping])
OPTION_DEFAULT_ON([toolkit-scroll-bars],[don't use Motif or Xaw3d scroll bars])
OPTION_DEFAULT_ON([xaw3d],[don't use Xaw3d])
OPTION_DEFAULT_ON([xim],[don't use X11 XIM])
AC_ARG_WITH([ns],[AS_HELP_STRING([--with-ns],
[use Nextstep (macOS Cocoa or GNUstep) windowing system.
On by default on macOS.])],[],[with_ns=maybe])
OPTION_DEFAULT_OFF([w32], [use native MS Windows GUI in a Cygwin build])
OPTION_DEFAULT_ON([gpm],[don't use -lgpm for mouse support on a GNU/Linux console])
OPTION_DEFAULT_ON([dbus],[don't compile with D-Bus support])
OPTION_DEFAULT_ON([gconf],[don't compile with GConf support])
OPTION_DEFAULT_ON([gsettings],[don't compile with GSettings support])
OPTION_DEFAULT_ON([selinux],[don't compile with SELinux support])
OPTION_DEFAULT_ON([gnutls],[don't use -lgnutls for SSL/TLS support])
OPTION_DEFAULT_ON([zlib],[don't compile with zlib decompression support])
OPTION_DEFAULT_OFF([modules],[compile with dynamic modules support])
AC_ARG_WITH([file-notification],[AS_HELP_STRING([--with-file-notification=LIB],
[use a file notification library (LIB one of: yes, inotify, kqueue, gfile, w32, no)])],
[ case "${withval}" in
y | ye | yes ) val=yes ;;
n | no ) val=no ;;
i | in | ino | inot | inoti | inotif | inotify ) val=inotify ;;
k | kq | kqu | kque | kqueu | kqueue ) val=kqueue ;;
g | gf | gfi | gfil | gfile ) val=gfile ;;
w | w3 | w32 ) val=w32 ;;
* ) AC_MSG_ERROR(['--with-file-notification=$withval' is invalid;
this option's value should be 'yes', 'no', 'inotify', 'kqueue', 'gfile' or 'w32'.
'yes' is a synonym for 'w32' on MS-Windows, for 'no' on Nextstep,
otherwise for the first of 'inotify', 'kqueue' or 'gfile' that is usable.])
;;
esac
with_file_notification=$val
],
[with_file_notification=$with_features])
OPTION_DEFAULT_OFF([xwidgets],
[enable use of some gtk widgets in Emacs buffers (requires gtk3)])
## For the times when you want to build Emacs but don't have
## a suitable makeinfo, and can live without the manuals.
dnl http://lists.gnu.org/archive/html/emacs-devel/2008-04/msg01844.html
OPTION_DEFAULT_ON([makeinfo],[don't require makeinfo for building manuals])
## This might be a 'configure' arg.
AC_SUBST([ACLOCAL_PATH])
## Makefile.in needs the cache file name.
AC_SUBST(cache_file)
## This is an option because I do not know if all info/man support
## compressed files, nor how to test if they do so.
OPTION_DEFAULT_ON([compress-install],
[don't compress some files (.el, .info, etc.) when installing. Equivalent to:
make GZIP_PROG= install])
AC_ARG_WITH(gameuser,dnl
[AS_HELP_STRING([--with-gameuser=USER_OR_GROUP],
[user for shared game score files.
An argument prefixed by ':' specifies a group instead.])])
gameuser=
gamegroup=
# We don't test if we can actually chown/chgrp here, because configure
# may run without root privileges. lib-src/Makefile.in will handle
# any errors due to missing user/group gracefully.
case ${with_gameuser} in
no) ;;
"" | yes) gamegroup=games ;;
:*) gamegroup=${with_gameuser#:} ;;
*) gameuser=${with_gameuser} ;;
esac
AC_ARG_WITH([gnustep-conf],dnl
[AS_HELP_STRING([--with-gnustep-conf=FILENAME],
[name of GNUstep configuration file to use on systems where the command
'gnustep-config' does not work; default $GNUSTEP_CONFIG_FILE, or
/etc/GNUstep/GNUstep.conf])])
test "X${with_gnustep_conf}" != X && test "${with_gnustep_conf}" != yes && \
GNUSTEP_CONFIG_FILE="${with_gnustep_conf}"
test "X$GNUSTEP_CONFIG_FILE" = "X" && \
GNUSTEP_CONFIG_FILE=/etc/GNUstep/GNUstep.conf
AC_ARG_ENABLE(ns-self-contained,
[AS_HELP_STRING([--disable-ns-self-contained],
[disable self contained build under NeXTstep])],
EN_NS_SELF_CONTAINED=$enableval,
EN_NS_SELF_CONTAINED=yes)
locallisppathset=no
AC_ARG_ENABLE(locallisppath,
[AS_HELP_STRING([--enable-locallisppath=PATH],
[directories Emacs should search for lisp files specific
to this site])],
if test "${enableval}" = "no"; then
locallisppath=
elif test "${enableval}" != "yes"; then
locallisppath=${enableval} locallisppathset=yes
fi)
AC_ARG_ENABLE(checking,
[AS_HELP_STRING([--enable-checking@<:@=LIST@:>@],
[enable expensive run-time checks. With LIST,
enable only specific categories of checks.
Categories are: all,yes,no.
Flags are: stringbytes, stringoverrun, stringfreelist,
xmallocoverrun, conslist, glyphs])],
[ac_checking_flags="${enableval}"],[])
IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
for check in $ac_checking_flags
do
case $check in
# these set all the flags to specific states
yes) ac_enable_checking=1 ;;
no) ac_enable_checking= ;
ac_gc_check_stringbytes= ;
ac_gc_check_string_overrun= ;
ac_gc_check_string_free_list= ;
ac_xmalloc_overrun= ;
ac_gc_check_cons_list= ;
ac_glyphs_debug= ;;
all) ac_enable_checking=1 ;
ac_gc_check_stringbytes=1 ;
ac_gc_check_string_overrun=1 ;
ac_gc_check_string_free_list=1 ;
ac_xmalloc_overrun=1 ;
ac_gc_check_cons_list=1 ;
ac_glyphs_debug=1 ;;
# these enable particular checks
stringbytes) ac_gc_check_stringbytes=1 ;;
stringoverrun) ac_gc_check_string_overrun=1 ;;
stringfreelist) ac_gc_check_string_free_list=1 ;;
xmallocoverrun) ac_xmalloc_overrun=1 ;;
conslist) ac_gc_check_cons_list=1 ;;
glyphs) ac_glyphs_debug=1 ;;
*) AC_MSG_ERROR(unknown check category $check) ;;
esac
done
IFS="$ac_save_IFS"
if test x$ac_enable_checking != x ; then
AC_DEFINE(ENABLE_CHECKING, 1,
[Define to 1 if expensive run-time data type and consistency checks are enabled.])
fi
if test x$ac_gc_check_stringbytes != x ; then
AC_DEFINE(GC_CHECK_STRING_BYTES, 1,
[Define this temporarily to hunt a bug. If defined, the size of
strings is redundantly recorded in sdata structures so that it can
be compared to the sizes recorded in Lisp strings.])
fi
if test x$ac_gc_check_string_overrun != x ; then
AC_DEFINE(GC_CHECK_STRING_OVERRUN, 1,
[Define this to check for short string overrun.])
fi
if test x$ac_gc_check_string_free_list != x ; then
AC_DEFINE(GC_CHECK_STRING_FREE_LIST, 1,
[Define this to check the string free list.])
fi
if test x$ac_xmalloc_overrun != x ; then
AC_DEFINE(XMALLOC_OVERRUN_CHECK, 1,
[Define this to check for malloc buffer overrun.])
fi
if test x$ac_gc_check_cons_list != x ; then
AC_DEFINE(GC_CHECK_CONS_LIST, 1,
[Define this to check for errors in cons list.])
fi
if test x$ac_glyphs_debug != x ; then
AC_DEFINE(GLYPH_DEBUG, 1,
[Define this to enable glyphs debugging code.])
fi
AC_ARG_ENABLE(check-lisp-object-type,
[AS_HELP_STRING([--enable-check-lisp-object-type],
[enable compile time checks for the Lisp_Object data type.
This is useful for development for catching certain types of bugs.])],
if test "${enableval}" != "no"; then
AC_DEFINE(CHECK_LISP_OBJECT_TYPE, 1,
[Define this to enable compile time checks for the Lisp_Object data type.])
fi)
dnl The name of this option is unfortunate. It predates, and has no
dnl relation to, the "sampling-based elisp profiler" added in 24.3.
dnl Actually, it stops it working.
dnl http://lists.gnu.org/archive/html/emacs-devel/2012-11/msg00393.html
AC_ARG_ENABLE(profiling,
[AS_HELP_STRING([--enable-profiling],
[build emacs with low-level, gprof profiling support.
Mainly useful for debugging Emacs itself. May not work on
all platforms. Stops profiler.el working.])],
[ac_enable_profiling="${enableval}"],[])
if test x$ac_enable_profiling != x ; then
PROFILING_CFLAGS="-DPROFILING=1 -pg"
else
PROFILING_CFLAGS=
fi
AC_SUBST(PROFILING_CFLAGS)
AC_ARG_ENABLE(autodepend,
[AS_HELP_STRING([--enable-autodepend],
[automatically generate dependencies to .h-files.
Requires gcc, enabled if found.])],
[ac_enable_autodepend="${enableval}"],[ac_enable_autodepend=yes])
AC_ARG_ENABLE(gtk-deprecation-warnings,
[AS_HELP_STRING([--enable-gtk-deprecation-warnings],
[Show Gtk+/Gdk deprecation warnings for Gtk+ >= 3.0])],
[ac_enable_gtk_deprecation_warnings="${enableval}"],[])
dnl This used to use changequote, but, apart from 'changequote is evil'
dnl per the autoconf manual, we can speed up autoconf somewhat by quoting
dnl the great gob of text. Thus it's not processed for possible expansion.
dnl Just make sure the brackets remain balanced.
dnl
dnl Since Emacs can't find matching pairs of quotes, boundaries are
dnl indicated by comments.
dnl quotation begins
[
### If you add support for a new configuration, add code to this
### switch statement to recognize your configuration name and select
### the appropriate opsys.
### As far as handling version numbers on operating systems is
### concerned, make sure things will fail in a fixable way. If
### /etc/MACHINES doesn't say anything about version numbers, be
### prepared to handle anything reasonably. If version numbers
### matter, be sure /etc/MACHINES says something about it.
opsys='' unported=no
case "${canonical}" in
## GNU/Linux and similar ports
*-*-linux* )
opsys=gnu-linux
;;
## FreeBSD ports
*-*-freebsd* )
opsys=freebsd
;;
## DragonFly ports
*-*-dragonfly* )
opsys=dragonfly
;;
## FreeBSD kernel + glibc based userland
*-*-kfreebsd*gnu* )
opsys=gnu-kfreebsd
;;
## NetBSD ports
*-*-netbsd* )
opsys=netbsd
;;
## OpenBSD ports
*-*-openbsd* | *-*-mirbsd* )
opsys=openbsd
;;
## Apple Darwin / macOS
*-apple-darwin* )
case "${canonical}" in
*-apple-darwin[0-9].*) unported=yes ;;
i[3456]86-* | x86_64-* ) ;;
* ) unported=yes ;;
esac
opsys=darwin
## Use fink packages if available.
## FIXME find a better way to do this: http://debbugs.gnu.org/11507
## if test -d /sw/include && test -d /sw/lib; then
## GCC_TEST_OPTIONS="-I/sw/include -L/sw/lib"
## NON_GCC_TEST_OPTIONS=${GCC_TEST_OPTIONS}
## fi
;;
## Chromium Native Client
*-nacl )
opsys=nacl
;;
## Cygwin ports
*-*-cygwin )
opsys=cygwin
;;
## HP 9000 series 700 and 800, running HP/UX
hppa*-hp-hpux10.2* )
opsys=hpux10-20
;;
hppa*-hp-hpux1[1-9]* )
opsys=hpux11
CFLAGS="-D_INCLUDE__STDC_A1_SOURCE $CFLAGS"
;;
## IBM machines
rs6000-ibm-aix4.[23]* )
opsys=aix4-2
;;
powerpc-ibm-aix4.[23]* )
opsys=aix4-2
;;
rs6000-ibm-aix[56]* )
opsys=aix4-2
;;
powerpc-ibm-aix[5-9]* | powerpc-ibm-aix[1-9][0-9]* )
opsys=aix4-2
;;
## Silicon Graphics machines
## Iris 4D
mips-sgi-irix6.5 )
opsys=irix6-5
# Without defining _LANGUAGE_C, things get masked out in the headers
# so that, for instance, grepping for 'free' in stdlib.h fails and
# AC_HEADER_STD_C fails. (MIPSPro 7.2.1.2m compilers, Irix 6.5.3m).
NON_GCC_TEST_OPTIONS="-D_LANGUAGE_C"
;;
## Suns
*-sun-solaris* \
| i[3456]86-*-solaris2* | i[3456]86-*-sunos5* \
| x86_64-*-solaris2* | x86_64-*-sunos5*)
case "${canonical}" in
i[3456]86-*-* ) ;;
amd64-*-*|x86_64-*-*) ;;
sparc* ) ;;
* ) unported=yes ;;
esac
case "${canonical}" in
*-sunos5.[1-9][0-9]* | *-solaris2.[1-9][0-9]* )
opsys=sol2-10
emacs_check_sunpro_c=yes
;;
*-sunos5.[1-5]* | *-solaris2.[1-5]* ) unported=yes ;;
## Note that Emacs 23.1's NEWS said the following would be dropped.
*-sunos5.6* | *-solaris2.6* )
opsys=sol2-6
RANLIB="ar -ts"
;;
## 5.7 EOL Aug 2008, 5.8 EOL Mar 2012.
*-sunos5.[7-9]* | *-solaris2.[7-9]* )
opsys=sol2-6
emacs_check_sunpro_c=yes
;;
esac
## Watch out for a compiler that we know will not work.
case "${canonical}" in
*-solaris* | *-sunos5* )
if [ "x$CC" = x/usr/ucb/cc ]; then
## /usr/ucb/cc doesn't work;
## we should find some other compiler that does work.
unset CC
fi
;;
*) ;;
esac
;;
## Intel 386 machines where we don't care about the manufacturer.
i[3456]86-*-* )
case "${canonical}" in
*-darwin* ) opsys=darwin ;;
*-mingw* )
opsys=mingw32
# MinGW overrides and adds some system headers in nt/inc.
GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
;;
*-sysv4.2uw* ) opsys=unixware ;;
*-sysv5uw* ) opsys=unixware ;;
*-sysv5OpenUNIX* ) opsys=unixware ;;
## Otherwise, we'll fall through to the generic opsys code at the bottom.
esac
;;
# MinGW64
x86_64-*-* )
case "${canonical}" in
*-mingw* )
opsys=mingw32
# MinGW overrides and adds some system headers in nt/inc.
GCC_TEST_OPTIONS="-I $srcdir/nt/inc"
;;
## Otherwise, we'll fall through to the generic opsys code at the bottom.
esac
;;
* )
unported=yes
;;
esac
### If the code above didn't choose an operating system, just choose
### an operating system based on the configuration name. You really
### only want to use this when you have no idea what the right
### operating system is; if you know what operating systems a machine
### runs, it's cleaner to make it explicit in the case statement
### above.
if test x"${opsys}" = x; then
case "${canonical}" in
*-gnu* ) opsys=gnu ;;
* )
unported=yes
;;
esac
fi
]
dnl quotation ends
if test $unported = yes; then
AC_MSG_ERROR([Emacs does not support '${canonical}' systems.
If you think it should, please send a report to ${PACKAGE_BUGREPORT}.
Check 'etc/MACHINES' for recognized configuration names.])
fi
#### Choose a compiler.
dnl Don't bother to test for C89.
AC_DEFUN([_AC_PROG_CC_C89], [$2])
dnl Sets GCC=yes if using gcc.
AC_PROG_CC([gcc cc cl clang "$XCRUN gcc" "$XCRUN clang"])
if test -n "$XCRUN"; then
AC_CHECK_PROGS(AR, [ar "$XCRUN ar"])
test -n "$AR" && export AR
fi
dnl Emacs needs C99 or later.
gl_PROG_CC_C99
AM_PROG_CC_C_O
if test x$GCC = xyes; then
test "x$GCC_TEST_OPTIONS" != x && CC="$CC $GCC_TEST_OPTIONS"
else
test "x$NON_GCC_TEST_OPTIONS" != x && CC="$CC $NON_GCC_TEST_OPTIONS"
fi
dnl This is used in lib/Makefile.am to use nt/gnulib.mk, the
dnl alternative to lib/gnulib.mk, so as to avoid generating header files
dnl that clash with MinGW.
AM_CONDITIONAL([BUILDING_FOR_WINDOWSNT], [test "x$opsys" = "xmingw32"])
# Avoid gnulib's tests for -lcrypto, so that there's no static dependency on it.
AC_DEFUN([gl_CRYPTO_CHECK])
# Avoid gnulib's tests for HAVE_WORKING_O_NOATIME and HAVE_WORKING_O_NOFOLLOW,
# as we don't use them.
AC_DEFUN([gl_FCNTL_O_FLAGS])
# Avoid gnulib's test for pthread_sigmask.
funcs=
for func in $ac_func_list; do
test $func = pthread_sigmask || AS_VAR_APPEND([funcs], [" $func"])
done
ac_func_list=$funcs
# Use the system putenv even if it lacks GNU features, as we don't need them,
# and the gnulib replacement runs afoul of a FreeBSD 10.1 bug; see Bug#19874.
AC_CHECK_FUNCS_ONCE([putenv])
AC_DEFUN([gl_FUNC_PUTENV],
[test "$ac_cv_func_putenv" = yes || REPLACE_PUTENV=1])
# Initialize gnulib right after choosing the compiler.
dnl Amongst other things, this sets AR and ARFLAGS.
gl_EARLY
if test "$ac_test_CFLAGS" != set; then
# It's helpful to have C macros available to GDB, so prefer -g3 to -g
# if -g3 works and the user does not specify CFLAGS.
# This test must follow gl_EARLY; otherwise AC_LINK_IFELSE complains.
case $CFLAGS in
'-g')
emacs_g3_CFLAGS='-g3';;
'-g -O2')
emacs_g3_CFLAGS='-g3 -O2';;
*)
emacs_g3_CFLAGS='';;
esac
if test -n "$emacs_g3_CFLAGS"; then
emacs_save_CFLAGS=$CFLAGS
CFLAGS=$emacs_g3_CFLAGS
AC_CACHE_CHECK([whether $CC accepts $emacs_g3_CFLAGS],
[emacs_cv_prog_cc_g3],
[AC_LINK_IFELSE([AC_LANG_PROGRAM()],
[emacs_cv_prog_cc_g3=yes],
[emacs_cv_prog_cc_g3=no])])
if test $emacs_cv_prog_cc_g3 != yes; then
CFLAGS=$emacs_save_CFLAGS
fi
if test $opsys = mingw32; then
CFLAGS="$CFLAGS -gdwarf-2"
fi
fi
case $CFLAGS in
*-O*) ;;
*)
# No optimization flag was inferred for this non-GCC compiler.
# Try -O. This is needed for xlc on AIX; see Bug#14258.
emacs_save_CFLAGS=$CFLAGS
test -z "$CFLAGS" || CFLAGS="$CFLAGS "
CFLAGS=${CFLAGS}-O
AC_CACHE_CHECK([whether $CC accepts -O],
[emacs_cv_prog_cc_o],
[AC_LINK_IFELSE([AC_LANG_PROGRAM()],
[emacs_cv_prog_cc_o=yes],
[emacs_cv_prog_cc_o=no])])
if test $emacs_cv_prog_cc_o != yes; then
CFLAGS=$emacs_save_CFLAGS
fi ;;
esac
fi
AC_ARG_ENABLE([gcc-warnings],
[AS_HELP_STRING([--enable-gcc-warnings],
[turn on lots of GCC warnings/errors. This is intended for
developers, and may generate false alarms when used
with older or non-GNU development tools.])],
[case $enableval in
yes|no) ;;
*) AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
esac
gl_gcc_warnings=$enableval],
[gl_gcc_warnings=no]
)
# clang is unduly picky about some things.
AC_CACHE_CHECK([whether the compiler is clang], [emacs_cv_clang],
[AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[
#ifndef __clang__
error "not clang";
#endif
]])],
[emacs_cv_clang=yes],
[emacs_cv_clang=no])])
# When compiling with GCC, prefer -isystem to -I when including system
# include files, to avoid generating useless diagnostics for the files.
AS_IF([test "$gl_gcc_warnings" != yes],
[
isystem='-I'
AS_IF([test "$emacs_cv_clang" = yes],
[
# Turn off some warnings if supported.
gl_WARN_ADD([-Wno-switch])
gl_WARN_ADD([-Wno-tautological-constant-out-of-range-compare])
gl_WARN_ADD([-Wno-pointer-sign])
gl_WARN_ADD([-Wno-string-plus-int])
gl_WARN_ADD([-Wno-unknown-attributes])
])
],[
isystem='-isystem '
# This, $nw, is the list of warnings we disable.
nw=
case $with_x_toolkit in
lucid | athena | motif)
# Old toolkits mishandle 'const'.
nw="$nw -Wwrite-strings"
;;
esac
AS_IF([test -z "$nw"],
[gl_WARN_ADD([-Werror], [WERROR_CFLAGS])])
AC_SUBST([WERROR_CFLAGS])
nw="$nw -Wsystem-headers" # Don't let system headers trigger warnings
nw="$nw -Woverlength-strings" # Not a problem these days
nw="$nw -Wformat-nonliteral" # we do this a lot
nw="$nw -Wvla" # Emacs uses <vla.h>.
nw="$nw -Wswitch-default" # Too many warnings for now
nw="$nw -Winline" # OK to ignore 'inline'
nw="$nw -Wjump-misses-init" # We sometimes safely jump over init.
nw="$nw -Wstrict-overflow" # OK to optimize assuming that
# signed overflow has undefined behavior
nw="$nw -Wsync-nand" # irrelevant here, and provokes ObjC warning
nw="$nw -Wunsafe-loop-optimizations" # OK to suppress unsafe optimizations
nw="$nw -Wbad-function-cast" # These casts are no worse than others.
# Emacs doesn't care about shadowing; see
# <http://lists.gnu.org/archive/html/emacs-diffs/2011-11/msg00265.html>.
nw="$nw -Wshadow"
# Emacs's use of alloca inhibits protecting the stack.
nw="$nw -Wstack-protector"
# Emacs's use of partly-const functions such as Fgnutls_available_p
# make this option problematic.
nw="$nw -Wsuggest-attribute=const"
# Emacs's use of partly-pure functions such as CHECK_TYPE make this
# option problematic.
nw="$nw -Wsuggest-attribute=pure"
# This part is merely for shortening the command line,
# since -Wall implies -Wswitch.
nw="$nw -Wswitch"
# This part is merely for shortening the command line,
# since -Wno-FOO needs to be added below regardless.
nw="$nw -Wmissing-field-initializers"
nw="$nw -Wtype-limits"
nw="$nw -Wunused-parameter"
if test $emacs_cv_clang = yes; then
nw="$nw -Wcast-align"
fi
gl_MANYWARN_ALL_GCC([ws])
gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
for w in $ws; do
gl_WARN_ADD([$w])
done
gl_WARN_ADD([-Wredundant-decls]) # Prefer this, as we don't use Bison.
gl_WARN_ADD([-Wno-bool-operation]) # Emacs 26 is clean, 25 is not.
gl_WARN_ADD([-Wno-implicit-fallthrough]) # Emacs 26 is clean, 25 is not.
gl_WARN_ADD([-Wno-missing-field-initializers]) # We need this one
gl_WARN_ADD([-Wno-sign-compare]) # Too many warnings for now
gl_WARN_ADD([-Wno-type-limits]) # Too many warnings for now
gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
gl_WARN_ADD([-Wno-format-nonliteral])
# More things that clang is unduly picky about.
if test $emacs_cv_clang = yes; then
gl_WARN_ADD([-Wno-format-extra-args])
gl_WARN_ADD([-Wno-tautological-constant-out-of-range-compare])
gl_WARN_ADD([-Wno-unused-command-line-argument])
gl_WARN_ADD([-Wno-unused-value])
fi
AC_DEFINE([lint], [1], [Define to 1 if the compiler is checking for lint.])
AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
AH_VERBATIM([GNULIB_PORTCHECK_FORTIFY_SOURCE],
[/* Enable compile-time and run-time bounds-checking, and some warnings,
without upsetting glibc 2.15+. */
#if (defined GNULIB_PORTCHECK && !defined _FORTIFY_SOURCE \
&& defined __OPTIMIZE__ && __OPTIMIZE__)
# define _FORTIFY_SOURCE 2
#endif
])
# We use a slightly smaller set of warning options for lib/.
# Remove the following and save the result in GNULIB_WARN_CFLAGS.
nw=
nw="$nw -Wunused-macros"
gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
AC_SUBST([GNULIB_WARN_CFLAGS])
])
edit_cflags="
s,///*,/,g
s/^/ /
s/ -I/ $isystem/g
s/^ //
"
AC_ARG_ENABLE(link-time-optimization,
[AS_HELP_STRING([--enable-link-time-optimization],