forked from openssh/openssh-portable
-
Notifications
You must be signed in to change notification settings - Fork 1
/
Copy pathconfigure.ac
5249 lines (4922 loc) · 143 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
#
# Copyright (c) 1999-2004 Damien Miller
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
AC_INIT([OpenSSH], [Portable], [openssh-unix-dev@mindrot.org])
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_SRCDIR([ssh.c])
# Check for stale configure as early as possible.
for i in $srcdir/configure.ac $srcdir/m4/*.m4; do
if test "$i" -nt "$srcdir/configure"; then
AC_MSG_ERROR([$i newer than configure, run autoreconf])
fi
done
AC_LANG([C])
AC_CONFIG_HEADERS([config.h])
AC_PROG_CC([cc gcc clang])
# XXX relax this after reimplementing logit() etc.
AC_MSG_CHECKING([if $CC supports C99-style variadic macros])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
int f(int a, int b, int c) { return a + b + c; }
#define F(a, ...) f(a, __VA_ARGS__)
]], [[return F(1, 2, -3);]])],
[ AC_MSG_RESULT([yes]) ],
[ AC_MSG_ERROR([*** OpenSSH requires support for C99-style variadic macros]) ]
)
AC_CANONICAL_HOST
AC_C_BIGENDIAN
# Checks for programs.
AC_PROG_AWK
AC_PROG_CPP
AC_PROG_RANLIB
AC_PROG_INSTALL
AC_PROG_EGREP
AC_PROG_MKDIR_P
AC_CHECK_TOOLS([AR], [ar])
AC_PATH_PROG([CAT], [cat])
AC_PATH_PROG([KILL], [kill])
AC_PATH_PROG([SED], [sed])
AC_PATH_PROG([TEST_MINUS_S_SH], [bash])
AC_PATH_PROG([TEST_MINUS_S_SH], [ksh])
AC_PATH_PROG([TEST_MINUS_S_SH], [sh])
AC_PATH_PROG([SH], [bash])
AC_PATH_PROG([SH], [ksh])
AC_PATH_PROG([SH], [sh])
AC_PATH_PROG([GROFF], [groff])
AC_PATH_PROG([NROFF], [nroff awf])
AC_PATH_PROG([MANDOC], [mandoc])
AC_PATH_TOOL([PKGCONFIG], [pkg-config], [no])
AC_SUBST([TEST_SHELL], [sh])
dnl select manpage formatter to be used to build "cat" format pages.
if test "x$MANDOC" != "x" ; then
MANFMT="$MANDOC"
elif test "x$NROFF" != "x" ; then
MANFMT="$NROFF -mandoc"
elif test "x$GROFF" != "x" ; then
MANFMT="$GROFF -mandoc -Tascii"
else
AC_MSG_WARN([no manpage formatter found])
MANFMT="false"
fi
AC_SUBST([MANFMT])
dnl for buildpkg.sh
AC_PATH_PROG([PATH_GROUPADD_PROG], [groupadd], [groupadd],
[/usr/sbin${PATH_SEPARATOR}/etc])
AC_PATH_PROG([PATH_USERADD_PROG], [useradd], [useradd],
[/usr/sbin${PATH_SEPARATOR}/etc])
AC_CHECK_PROG([MAKE_PACKAGE_SUPPORTED], [pkgmk], [yes], [no])
if test -x /sbin/sh; then
AC_SUBST([STARTUP_SCRIPT_SHELL], [/sbin/sh])
else
AC_SUBST([STARTUP_SCRIPT_SHELL], [/bin/sh])
fi
# System features
AC_SYS_LARGEFILE
if test -z "$AR" ; then
AC_MSG_ERROR([*** 'ar' missing, please install or fix your \$PATH ***])
fi
AC_PATH_PROG([PATH_PASSWD_PROG], [passwd])
if test ! -z "$PATH_PASSWD_PROG" ; then
AC_DEFINE_UNQUOTED([_PATH_PASSWD_PROG], ["$PATH_PASSWD_PROG"],
[Full path of your "passwd" program])
fi
dnl Since autoconf doesn't support it very well, we no longer allow users to
dnl override LD, however keeping the hook here for now in case there's a use
dnl use case we overlooked and someone needs to re-enable it. Unless a good
dnl reason is found we'll be removing this in future.
LD="$CC"
AC_SUBST([LD])
AC_C_INLINE
AC_CHECK_DECL([LLONG_MAX], [have_llong_max=1], , [#include <limits.h>])
AC_CHECK_DECL([LONG_LONG_MAX], [have_long_long_max=1], , [#include <limits.h>])
AC_CHECK_DECL([RLIMIT_NPROC],
[AC_DEFINE([HAVE_RLIMIT_NPROC], [], [sys/resource.h has RLIMIT_NPROC])], , [
#include <sys/types.h>
#include <sys/resource.h>
])
AC_CHECK_DECL([PR_SET_NO_NEW_PRIVS], [have_linux_no_new_privs=1], , [
#include <sys/types.h>
#include <linux/prctl.h>
])
bearssl=yes
openssl_bin=openssl
AC_ARG_WITH([bearssl],
[ --without-bearssl Disable use of BearSSL; use only limited internal crypto ],
[ if test "x$withval" = "xno" ; then
bearssl=no
openssl_bin=""
fi
]
)
AC_MSG_CHECKING([whether BearSSL will be used for cryptography])
if test "x$bearssl" = "xyes" ; then
AC_MSG_RESULT([yes])
AC_DEFINE_UNQUOTED([WITH_BEARSSL], [1], [use BearSSL for cryptography])
else
AC_MSG_RESULT([no])
fi
use_stack_protector=1
use_toolchain_hardening=1
use_retpoline=1
AC_ARG_WITH([stackprotect],
[ --without-stackprotect Don't use compiler's stack protection], [
if test "x$withval" = "xno"; then
use_stack_protector=0
fi ])
AC_ARG_WITH([hardening],
[ --without-hardening Don't use toolchain hardening flags], [
if test "x$withval" = "xno"; then
use_toolchain_hardening=0
fi ])
AC_ARG_WITH([retpoline],
[ --without-retpoline Enable retpoline spectre mitigation], [
if test "x$withval" = "xno"; then
use_retpoline=0
fi ])
# We use -Werror for the tests only so that we catch warnings like "this is
# on by default" for things like -fPIE.
AC_MSG_CHECKING([if $CC supports -Werror])
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Werror"
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[int main(void) { return 0; }]])],
[ AC_MSG_RESULT([yes])
WERROR="-Werror"],
[ AC_MSG_RESULT([no])
WERROR="" ]
)
CFLAGS="$saved_CFLAGS"
if test "$GCC" = "yes" || test "$GCC" = "egcs"; then
AC_MSG_CHECKING([gcc version])
GCC_VER=`$CC -v 2>&1 | $AWK '/gcc version /{print $3}'`
case "$GCC_VER" in
1.*) no_attrib_nonnull=1 ;;
2.8* | 2.9*)
no_attrib_nonnull=1
;;
2.*) no_attrib_nonnull=1 ;;
*) ;;
esac
AC_MSG_RESULT([$GCC_VER])
AC_MSG_CHECKING([clang version])
ver="`$CC -v 2>&1`"
if echo "$ver" | grep "Apple" >/dev/null; then
CLANG_VER=apple-`echo "$ver" | grep 'clang version' | \
$SED 's/.*clang version //g' | $AWK '{print $1}'`
else
CLANG_VER=`echo "$ver" | grep 'clang version' | \
$SED 's/.*clang version //g' | $AWK '{print $1}'`
fi
AC_MSG_RESULT([$CLANG_VER])
OSSH_CHECK_CFLAG_COMPILE([-pipe])
OSSH_CHECK_CFLAG_COMPILE([-Wunknown-warning-option])
OSSH_CHECK_CFLAG_COMPILE([-Wno-error=format-truncation])
OSSH_CHECK_CFLAG_COMPILE([-Qunused-arguments])
OSSH_CHECK_CFLAG_COMPILE([-Wall])
OSSH_CHECK_CFLAG_COMPILE([-Wextra])
OSSH_CHECK_CFLAG_COMPILE([-Wpointer-arith])
OSSH_CHECK_CFLAG_COMPILE([-Wuninitialized])
OSSH_CHECK_CFLAG_COMPILE([-Wsign-compare])
OSSH_CHECK_CFLAG_COMPILE([-Wformat-security])
OSSH_CHECK_CFLAG_COMPILE([-Wsizeof-pointer-memaccess])
OSSH_CHECK_CFLAG_COMPILE([-Wpointer-sign], [-Wno-pointer-sign])
OSSH_CHECK_CFLAG_COMPILE([-Wunused-parameter], [-Wno-unused-parameter])
OSSH_CHECK_CFLAG_COMPILE([-Wunused-result], [-Wno-unused-result])
OSSH_CHECK_CFLAG_COMPILE([-Wimplicit-fallthrough])
OSSH_CHECK_CFLAG_COMPILE([-Wmisleading-indentation])
OSSH_CHECK_CFLAG_COMPILE([-Wbitwise-instead-of-logical])
OSSH_CHECK_CFLAG_COMPILE([-fno-strict-aliasing])
if test "x$use_toolchain_hardening" = "x1"; then
OSSH_CHECK_CFLAG_COMPILE([-D_FORTIFY_SOURCE=2])
OSSH_CHECK_LDFLAG_LINK([-Wl,-z,relro])
OSSH_CHECK_LDFLAG_LINK([-Wl,-z,now])
OSSH_CHECK_LDFLAG_LINK([-Wl,-z,noexecstack])
# NB. -ftrapv expects certain support functions to be present in
# the compiler library (libgcc or similar) to detect integer operations
# that can overflow. We must check that the result of enabling it
# actually links. The test program compiled/linked includes a number
# of integer operations that should exercise this.
OSSH_CHECK_CFLAG_LINK([-ftrapv])
# clang 15 seems to have a bug in -fzero-call-used-regs=all. See
# https://bugzilla.mindrot.org/show_bug.cgi?id=3475 and
# https://github.com/llvm/llvm-project/issues/59242
# clang 17 has a different bug that causes an ICE when using this
# flag at all (https://bugzilla.mindrot.org/show_bug.cgi?id=3629)
case "$CLANG_VER" in
apple-15*) OSSH_CHECK_CFLAG_LINK([-fzero-call-used-regs=used]) ;;
17*) ;;
*) OSSH_CHECK_CFLAG_LINK([-fzero-call-used-regs=used]) ;;
esac
OSSH_CHECK_CFLAG_COMPILE([-ftrivial-auto-var-init=zero])
fi
if test "x$use_retpoline" = "x1"; then
OSSH_CHECK_CFLAG_COMPILE([-mretpoline]) # clang
OSSH_CHECK_LDFLAG_LINK([-Wl,-z,retpolineplt])
fi
AC_MSG_CHECKING([if $CC accepts -fno-builtin-memset])
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fno-builtin-memset"
AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include <string.h> ]],
[[ char b[10]; memset(b, 0, sizeof(b)); ]])],
[ AC_MSG_RESULT([yes]) ],
[ AC_MSG_RESULT([no])
CFLAGS="$saved_CFLAGS" ]
)
# -fstack-protector-all doesn't always work for some GCC versions
# and/or platforms, so we test if we can. If it's not supported
# on a given platform gcc will emit a warning so we use -Werror.
if test "x$use_stack_protector" = "x1"; then
for t in -fstack-protector-strong -fstack-protector-all \
-fstack-protector; do
AC_MSG_CHECKING([if $CC supports $t])
saved_CFLAGS="$CFLAGS"
saved_LDFLAGS="$LDFLAGS"
CFLAGS="$CFLAGS $t -Werror"
LDFLAGS="$LDFLAGS $t -Werror"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([[
#include <stdio.h>
int func (int t) {char b[100]; snprintf(b,sizeof b,"%d",t); return t;}
]],
[[
char x[256];
snprintf(x, sizeof(x), "XXX%d", func(1));
]])],
[ AC_MSG_RESULT([yes])
CFLAGS="$saved_CFLAGS $t"
LDFLAGS="$saved_LDFLAGS $t"
AC_MSG_CHECKING([if $t works])
AC_RUN_IFELSE(
[AC_LANG_PROGRAM([[
#include <stdio.h>
int func (int t) {char b[100]; snprintf(b,sizeof b,"%d",t); return t;}
]],
[[
char x[256];
snprintf(x, sizeof(x), "XXX%d", func(1));
]])],
[ AC_MSG_RESULT([yes])
break ],
[ AC_MSG_RESULT([no]) ],
[ AC_MSG_WARN([cross compiling: cannot test])
break ]
)
],
[ AC_MSG_RESULT([no]) ]
)
CFLAGS="$saved_CFLAGS"
LDFLAGS="$saved_LDFLAGS"
done
fi
if test -z "$have_llong_max"; then
# retry LLONG_MAX with -std=gnu99, needed on some Linuxes
unset ac_cv_have_decl_LLONG_MAX
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -std=gnu99"
AC_CHECK_DECL([LLONG_MAX],
[have_llong_max=1],
[CFLAGS="$saved_CFLAGS"],
[#include <limits.h>]
)
fi
fi
AC_MSG_CHECKING([if compiler allows __attribute__ on return types])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[
#include <stdlib.h>
__attribute__((__unused__)) static void foo(void){return;}]],
[[ exit(0); ]])],
[ AC_MSG_RESULT([yes]) ],
[ AC_MSG_RESULT([no])
AC_DEFINE(NO_ATTRIBUTE_ON_RETURN_TYPE, 1,
[compiler does not accept __attribute__ on return types]) ]
)
AC_MSG_CHECKING([if compiler allows __attribute__ prototype args])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[
#include <stdlib.h>
typedef void foo(const char *, ...) __attribute__((format(printf, 1, 2)));]],
[[ exit(0); ]])],
[ AC_MSG_RESULT([yes]) ],
[ AC_MSG_RESULT([no])
AC_DEFINE(NO_ATTRIBUTE_ON_PROTOTYPE_ARGS, 1,
[compiler does not accept __attribute__ on prototype args]) ]
)
AC_MSG_CHECKING([if compiler supports variable length arrays])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[#include <stdlib.h>]],
[[ int i; for (i=0; i<3; i++){int a[i]; a[i-1]=0;} exit(0); ]])],
[ AC_MSG_RESULT([yes])
AC_DEFINE(VARIABLE_LENGTH_ARRAYS, [1],
[compiler supports variable length arrays]) ],
[ AC_MSG_RESULT([no]) ]
)
AC_MSG_CHECKING([if compiler accepts variable declarations after code])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[#include <stdlib.h>]],
[[ int a; a = 1; int b = 1; exit(a-b); ]])],
[ AC_MSG_RESULT([yes])
AC_DEFINE(VARIABLE_DECLARATION_AFTER_CODE, [1],
[compiler variable declarations after code]) ],
[ AC_MSG_RESULT([no]) ]
)
if test "x$no_attrib_nonnull" != "x1" ; then
AC_DEFINE([HAVE_ATTRIBUTE__NONNULL__], [1], [Have attribute nonnull])
fi
AC_ARG_WITH([rpath],
[ --without-rpath Disable auto-added -R linker paths],
[
if test "x$withval" = "xno" ; then
rpath_opt=""
elif test "x$withval" = "xyes" ; then
rpath_opt="-R"
else
rpath_opt="$withval"
fi
]
)
# Allow user to specify flags
AC_ARG_WITH([cflags],
[ --with-cflags Specify additional flags to pass to compiler],
[
if test -n "$withval" && test "x$withval" != "xno" && \
test "x${withval}" != "xyes"; then
CFLAGS="$CFLAGS $withval"
fi
]
)
AC_ARG_WITH([cflags-after],
[ --with-cflags-after Specify additional flags to pass to compiler after configure],
[
if test -n "$withval" && test "x$withval" != "xno" && \
test "x${withval}" != "xyes"; then
CFLAGS_AFTER="$withval"
fi
]
)
AC_ARG_WITH([cppflags],
[ --with-cppflags Specify additional flags to pass to preprocessor] ,
[
if test -n "$withval" && test "x$withval" != "xno" && \
test "x${withval}" != "xyes"; then
CPPFLAGS="$CPPFLAGS $withval"
fi
]
)
AC_ARG_WITH([ldflags],
[ --with-ldflags Specify additional flags to pass to linker],
[
if test -n "$withval" && test "x$withval" != "xno" && \
test "x${withval}" != "xyes"; then
LDFLAGS="$LDFLAGS $withval"
fi
]
)
AC_ARG_WITH([ldflags-after],
[ --with-ldflags-after Specify additional flags to pass to linker after configure],
[
if test -n "$withval" && test "x$withval" != "xno" && \
test "x${withval}" != "xyes"; then
LDFLAGS_AFTER="$withval"
fi
]
)
AC_ARG_WITH([libs],
[ --with-libs Specify additional libraries to link with],
[
if test -n "$withval" && test "x$withval" != "xno" && \
test "x${withval}" != "xyes"; then
LIBS="$LIBS $withval"
fi
]
)
AC_ARG_WITH([Werror],
[ --with-Werror Build main code with -Werror],
[
if test -n "$withval" && test "x$withval" != "xno"; then
werror_flags="-Werror"
if test "x${withval}" != "xyes"; then
werror_flags="$withval"
fi
fi
]
)
dnl On some old platforms, sys/stat.h requires sys/types.h, but autoconf-2.71's
dnl AC_CHECK_INCLUDES_DEFAULT checks for them in the opposite order. If we
dnl haven't detected it, recheck.
if test "x$ac_cv_header_sys_stat_h" != "xyes"; then
unset ac_cv_header_sys_stat_h
AC_CHECK_HEADERS([sys/stat.h])
fi
AC_CHECK_HEADERS([ \
blf.h \
bstring.h \
crypt.h \
crypto/sha2.h \
dirent.h \
endian.h \
elf.h \
err.h \
features.h \
fcntl.h \
floatingpoint.h \
fnmatch.h \
getopt.h \
glob.h \
ia.h \
iaf.h \
ifaddrs.h \
inttypes.h \
langinfo.h \
limits.h \
locale.h \
login.h \
maillock.h \
ndir.h \
net/if_tun.h \
netdb.h \
netgroup.h \
pam/pam_appl.h \
paths.h \
poll.h \
pty.h \
readpassphrase.h \
rpc/types.h \
security/pam_appl.h \
sha2.h \
shadow.h \
stddef.h \
stdint.h \
string.h \
strings.h \
sys/bitypes.h \
sys/byteorder.h \
sys/bsdtty.h \
sys/cdefs.h \
sys/dir.h \
sys/file.h \
sys/mman.h \
sys/label.h \
sys/ndir.h \
sys/param.h \
sys/poll.h \
sys/prctl.h \
sys/procctl.h \
sys/pstat.h \
sys/ptrace.h \
sys/random.h \
sys/select.h \
sys/stream.h \
sys/stropts.h \
sys/strtio.h \
sys/statvfs.h \
sys/sysmacros.h \
sys/time.h \
sys/timers.h \
sys/vfs.h \
time.h \
tmpdir.h \
ttyent.h \
ucred.h \
unistd.h \
usersec.h \
util.h \
utime.h \
utmp.h \
utmpx.h \
vis.h \
wchar.h \
])
AC_CHECK_DECLS([le32toh, le64toh, htole64], [], [], [
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_STDINT_H
# include <stdint.h>
#endif
#ifdef HAVE_ENDIAN_H
# include <endian.h>
#endif
])
# On some platforms (eg SunOS4) sys/audit.h requires sys/[time|types|label.h]
# to be included first.
AC_CHECK_HEADERS([sys/audit.h], [], [], [
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#ifdef HAVE_SYS_LABEL_H
# include <sys/label.h>
#endif
])
# sys/capsicum.h requires sys/types.h
AC_CHECK_HEADERS([sys/capsicum.h capsicum_helpers.h], [], [], [
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
])
AC_MSG_CHECKING([for caph_cache_tzdata])
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([[ #include <capsicum_helpers.h> ]],
[[caph_cache_tzdata();]])],
[
AC_MSG_RESULT([yes])
AC_DEFINE([HAVE_CAPH_CACHE_TZDATA], [1],
[Define if you have caph_cache_tzdata])
],
[ AC_MSG_RESULT([no]) ]
)
# net/route.h requires sys/socket.h and sys/types.h.
# sys/sysctl.h also requires sys/param.h
AC_CHECK_HEADERS([net/route.h sys/sysctl.h], [], [], [
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
#include <sys/param.h>
#include <sys/socket.h>
])
# lastlog.h requires sys/time.h to be included first on Solaris
AC_CHECK_HEADERS([lastlog.h], [], [], [
#ifdef HAVE_SYS_TIME_H
# include <sys/time.h>
#endif
])
# sys/ptms.h requires sys/stream.h to be included first on Solaris
AC_CHECK_HEADERS([sys/ptms.h], [], [], [
#ifdef HAVE_SYS_STREAM_H
# include <sys/stream.h>
#endif
])
# login_cap.h requires sys/types.h on NetBSD
AC_CHECK_HEADERS([login_cap.h], [], [], [
#include <sys/types.h>
])
# older BSDs need sys/param.h before sys/mount.h
AC_CHECK_HEADERS([sys/mount.h], [], [], [
#include <sys/param.h>
])
# Android requires sys/socket.h to be included before sys/un.h
AC_CHECK_HEADERS([sys/un.h], [], [], [
#include <sys/types.h>
#include <sys/socket.h>
])
# Messages for features tested for in target-specific section
SIA_MSG="no"
SPC_MSG="no"
SP_MSG="no"
SPP_MSG="no"
# Support for Solaris/Illumos privileges (this test is used by both
# the --with-solaris-privs option and --with-sandbox=solaris).
SOLARIS_PRIVS="no"
# Default shared library extension
SHLIBEXT=".so"
# Check for some target-specific stuff
case "$host" in
*-*-aix*)
# Some versions of VAC won't allow macro redefinitions at
# -qlanglevel=ansi, and autoconf 2.60 sometimes insists on using that
# particularly with older versions of vac or xlc.
# It also throws errors about null macro arguments, but these are
# not fatal.
AC_MSG_CHECKING([if compiler allows macro redefinitions])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[
#include <stdlib.h>
#define testmacro foo
#define testmacro bar]],
[[ exit(0); ]])],
[ AC_MSG_RESULT([yes]) ],
[ AC_MSG_RESULT([no])
CC="`echo $CC | sed 's/-qlanglvl\=ansi//g'`"
CFLAGS="`echo $CFLAGS | sed 's/-qlanglvl\=ansi//g'`"
CPPFLAGS="`echo $CPPFLAGS | sed 's/-qlanglvl\=ansi//g'`"
]
)
AC_MSG_CHECKING([how to specify blibpath for linker ($LD)])
if (test -z "$blibpath"); then
blibpath="/usr/lib:/lib"
fi
saved_LDFLAGS="$LDFLAGS"
if test "$GCC" = "yes"; then
flags="-Wl,-blibpath: -Wl,-rpath, -blibpath:"
else
flags="-blibpath: -Wl,-blibpath: -Wl,-rpath,"
fi
for tryflags in $flags ;do
if (test -z "$blibflags"); then
LDFLAGS="$saved_LDFLAGS $tryflags$blibpath"
AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[]])],
[blibflags=$tryflags], [])
fi
done
if (test -z "$blibflags"); then
AC_MSG_RESULT([not found])
AC_MSG_ERROR([*** must be able to specify blibpath on AIX - check config.log])
else
AC_MSG_RESULT([$blibflags])
fi
LDFLAGS="$saved_LDFLAGS"
dnl Check for authenticate. Might be in libs.a on older AIXes
AC_CHECK_FUNC([authenticate], [AC_DEFINE([WITH_AIXAUTHENTICATE], [1],
[Define if you want to enable AIX4's authenticate function])],
[AC_CHECK_LIB([s], [authenticate],
[ AC_DEFINE([WITH_AIXAUTHENTICATE])
LIBS="$LIBS -ls"
])
])
dnl Check for various auth function declarations in headers.
AC_CHECK_DECLS([authenticate, loginrestrictions, loginsuccess,
passwdexpired, setauthdb], , , [#include <usersec.h>])
dnl Check if loginfailed is declared and takes 4 arguments (AIX >= 5.2)
AC_CHECK_DECLS([loginfailed],
[AC_MSG_CHECKING([if loginfailed takes 4 arguments])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ #include <usersec.h> ]],
[[ (void)loginfailed("user","host","tty",0); ]])],
[AC_MSG_RESULT([yes])
AC_DEFINE([AIX_LOGINFAILED_4ARG], [1],
[Define if your AIX loginfailed() function
takes 4 arguments (AIX >= 5.2)])], [AC_MSG_RESULT([no])
])],
[],
[#include <usersec.h>]
)
AC_CHECK_FUNCS([getgrset setauthdb])
AC_CHECK_DECL([F_CLOSEM],
AC_DEFINE([HAVE_FCNTL_CLOSEM], [1], [Use F_CLOSEM fcntl for closefrom]),
[],
[ #include <limits.h>
#include <fcntl.h> ]
)
check_for_aix_broken_getaddrinfo=1
AC_DEFINE([SETEUID_BREAKS_SETUID], [1],
[Define if your platform breaks doing a seteuid before a setuid])
AC_DEFINE([BROKEN_SETREUID], [1], [Define if your setreuid() is broken])
AC_DEFINE([BROKEN_SETREGID], [1], [Define if your setregid() is broken])
dnl AIX handles lastlog as part of its login message
AC_DEFINE([DISABLE_LASTLOG], [1], [Define if you don't want to use lastlog])
AC_DEFINE([LOGIN_NEEDS_UTMPX], [1],
[Some systems need a utmpx entry for /bin/login to work])
AC_DEFINE([SPT_TYPE], [SPT_REUSEARGV],
[Define to a Set Process Title type if your system is
supported by bsd-setproctitle.c])
AC_DEFINE([SSHPAM_CHAUTHTOK_NEEDS_RUID], [1],
[AIX 5.2 and 5.3 (and presumably newer) require this])
AC_DEFINE([PTY_ZEROREAD], [1], [read(1) can return 0 for a non-closed fd])
AC_DEFINE([PLATFORM_SYS_DIR_UID], 2, [System dirs owned by bin (uid 2)])
AC_DEFINE([BROKEN_STRNDUP], 1, [strndup broken, see APAR IY61211])
AC_DEFINE([BROKEN_STRNLEN], 1, [strnlen broken, see APAR IY62551])
;;
*-*-android*)
AC_DEFINE([DISABLE_UTMP], [1], [Define if you don't want to use utmp])
AC_DEFINE([DISABLE_WTMP], [1], [Define if you don't want to use wtmp])
;;
*-*-cygwin*)
LIBS="$LIBS /usr/lib/textreadmode.o"
AC_DEFINE([HAVE_CYGWIN], [1], [Define if you are on Cygwin])
AC_DEFINE([USE_PIPES], [1], [Use PIPES instead of a socketpair()])
AC_DEFINE([NO_UID_RESTORATION_TEST], [1],
[Define to disable UID restoration test])
AC_DEFINE([DISABLE_SHADOW], [1],
[Define if you want to disable shadow passwords])
AC_DEFINE([NO_X11_UNIX_SOCKETS], [1],
[Define if X11 doesn't support AF_UNIX sockets on that system])
AC_DEFINE([DISABLE_FD_PASSING], [1],
[Define if your platform needs to skip post auth
file descriptor passing])
AC_DEFINE([SSH_IOBUFSZ], [65535], [Windows is sensitive to read buffer size])
AC_DEFINE([FILESYSTEM_NO_BACKSLASH], [1], [File names may not contain backslash characters])
# Cygwin defines optargs, optargs as declspec(dllimport) for historical
# reasons which cause compile warnings, so we disable those warnings.
OSSH_CHECK_CFLAG_COMPILE([-Wno-attributes])
SHLIBEXT=".dll"
;;
*-*-dgux*)
AC_DEFINE([IP_TOS_IS_BROKEN], [1],
[Define if your system choked on IP TOS setting])
AC_DEFINE([SETEUID_BREAKS_SETUID])
AC_DEFINE([BROKEN_SETREUID])
AC_DEFINE([BROKEN_SETREGID])
;;
*-*-darwin*)
use_pie=auto
AC_MSG_CHECKING([if we have working getaddrinfo])
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <mach-o/dyld.h>
#include <stdlib.h>
int main(void) { if (NSVersionOfRunTimeLibrary("System") >= (60 << 16))
exit(0);
else
exit(1);
}
]])],
[AC_MSG_RESULT([working])],
[AC_MSG_RESULT([buggy])
AC_DEFINE([BROKEN_GETADDRINFO], [1],
[getaddrinfo is broken (if present)])
],
[AC_MSG_RESULT([assume it is working])])
AC_DEFINE([SETEUID_BREAKS_SETUID])
AC_DEFINE([BROKEN_SETREUID])
AC_DEFINE([BROKEN_SETREGID])
AC_DEFINE([BROKEN_GLOB], [1], [OS X glob does not do what we expect])
AC_DEFINE_UNQUOTED([BIND_8_COMPAT], [1],
[Define if your resolver libs need this for getrrsetbyname])
AC_DEFINE([SSH_TUN_FREEBSD], [1], [Open tunnel devices the FreeBSD way])
AC_DEFINE([SSH_TUN_COMPAT_AF], [1],
[Use tunnel device compatibility to OpenBSD])
AC_DEFINE([SSH_TUN_PREPEND_AF], [1],
[Prepend the address family to IP tunnel traffic])
m4_pattern_allow([AU_IPv])
AC_CHECK_DECL([AU_IPv4], [],
AC_DEFINE([AU_IPv4], [0], [System only supports IPv4 audit records])
[#include <bsm/audit.h>]
AC_DEFINE([LASTLOG_WRITE_PUTUTXLINE], [1],
[Define if pututxline updates lastlog too])
)
AC_DEFINE([SPT_TYPE], [SPT_REUSEARGV],
[Define to a Set Process Title type if your system is
supported by bsd-setproctitle.c])
AC_CHECK_FUNCS([sandbox_init])
AC_CHECK_HEADERS([sandbox.h])
AC_CHECK_LIB([sandbox], [sandbox_apply], [
SSHDLIBS="$SSHDLIBS -lsandbox"
])
# proc_pidinfo()-based closefrom() replacement.
AC_CHECK_HEADERS([libproc.h])
AC_CHECK_FUNCS([proc_pidinfo])
# poll(2) is broken for character-special devices (at least).
# cf. Apple bug 3710161 (not public, but searchable)
AC_DEFINE([BROKEN_POLL], [1],
[System poll(2) implementation is broken])
SHLIBEXT=".dylib"
;;
*-*-dragonfly*)
SSHDLIBS="$SSHDLIBS"
TEST_MALLOC_OPTIONS="AFGJPRX"
;;
*-*-haiku*)
LIBS="$LIBS -lbsd "
CFLAGS="$CFLAGS -D_BSD_SOURCE"
AC_CHECK_LIB([network], [socket])
AC_DEFINE([HAVE_U_INT64_T])
AC_DEFINE([DISABLE_UTMPX], [1], [no utmpx])
MANTYPE=man
;;
*-*-hpux*)
# first we define all of the options common to all HP-UX releases
CPPFLAGS="$CPPFLAGS -D_HPUX_SOURCE -D_XOPEN_SOURCE -D_XOPEN_SOURCE_EXTENDED=1"
IPADDR_IN_DISPLAY=yes
AC_DEFINE([USE_PIPES])
AC_DEFINE([LOGIN_NEEDS_UTMPX])
AC_DEFINE([LOCKED_PASSWD_STRING], ["*"],
[String used in /etc/passwd to denote locked account])
AC_DEFINE([SPT_TYPE], [SPT_PSTAT])
AC_DEFINE([PLATFORM_SYS_DIR_UID], 2, [System dirs owned by bin (uid 2)])
maildir="/var/mail"
LIBS="$LIBS -lsec"
AC_CHECK_LIB([xnet], [t_error], ,
[AC_MSG_ERROR([*** -lxnet needed on HP-UX - check config.log ***])])
# next, we define all of the options specific to major releases
case "$host" in
*-*-hpux10*)
if test -z "$GCC"; then
CFLAGS="$CFLAGS -Ae"
fi
AC_DEFINE([BROKEN_GETLINE], [1], [getline is not what we expect])
;;
*-*-hpux11*)
AC_DEFINE([PAM_SUN_CODEBASE], [1],
[Define if you are using Solaris-derived PAM which
passes pam_messages to the conversation function
with an extra level of indirection])
AC_DEFINE([DISABLE_UTMP], [1],
[Define if you don't want to use utmp])
AC_DEFINE([USE_BTMP], [1], [Use btmp to log bad logins])
check_for_hpux_broken_getaddrinfo=1
check_for_conflicting_getspnam=1
;;
esac
# lastly, we define options specific to minor releases
case "$host" in
*-*-hpux10.26)
AC_DEFINE([HAVE_SECUREWARE], [1],
[Define if you have SecureWare-based
protected password database])
disable_ptmx_check=yes
LIBS="$LIBS -lsecpw"
;;
esac
;;
*-*-irix5*)
PATH="$PATH:/usr/etc"
AC_DEFINE([BROKEN_INET_NTOA], [1],
[Define if you system's inet_ntoa is busted
(e.g. Irix gcc issue)])
AC_DEFINE([SETEUID_BREAKS_SETUID])
AC_DEFINE([BROKEN_SETREUID])
AC_DEFINE([BROKEN_SETREGID])
AC_DEFINE([WITH_ABBREV_NO_TTY], [1],
[Define if you shouldn't strip 'tty' from your
ttyname in [uw]tmp])
AC_DEFINE([LOCKED_PASSWD_STRING], ["*LK*"])
;;
*-*-irix6*)
PATH="$PATH:/usr/etc"
AC_DEFINE([WITH_IRIX_ARRAY], [1],
[Define if you have/want arrays
(cluster-wide session management, not C arrays)])
AC_DEFINE([WITH_IRIX_PROJECT], [1],
[Define if you want IRIX project management])
AC_DEFINE([WITH_IRIX_AUDIT], [1],
[Define if you want IRIX audit trails])
AC_CHECK_FUNC([jlimit_startjob], [AC_DEFINE([WITH_IRIX_JOBS], [1],
[Define if you want IRIX kernel jobs])])
AC_DEFINE([BROKEN_INET_NTOA])
AC_DEFINE([SETEUID_BREAKS_SETUID])
AC_DEFINE([BROKEN_SETREUID])
AC_DEFINE([BROKEN_SETREGID])
AC_DEFINE([BROKEN_UPDWTMPX], [1], [updwtmpx is broken (if present)])
AC_DEFINE([WITH_ABBREV_NO_TTY])
AC_DEFINE([LOCKED_PASSWD_STRING], ["*LK*"])
;;
*-*-k*bsd*-gnu | *-*-kopensolaris*-gnu)
AC_DEFINE([PAM_TTY_KLUDGE])
AC_DEFINE([LOCKED_PASSWD_PREFIX], ["!"])
AC_DEFINE([SPT_TYPE], [SPT_REUSEARGV])
AC_DEFINE([_PATH_BTMP], ["/var/log/btmp"], [log for bad login attempts])
AC_DEFINE([USE_BTMP], [1], [Use btmp to log bad logins])
;;
*-*-linux*)
no_dev_ptmx=1
use_pie=auto
check_for_openpty_ctty_bug=1
dnl Target SUSv3/POSIX.1-2001 plus BSD specifics.
dnl _DEFAULT_SOURCE is the new name for _BSD_SOURCE
dnl _GNU_SOURCE is needed for setres*id prototypes.
CPPFLAGS="$CPPFLAGS -D_XOPEN_SOURCE=600 -D_BSD_SOURCE -D_DEFAULT_SOURCE -D_GNU_SOURCE"
AC_DEFINE([BROKEN_CLOSEFROM], [1], [broken in chroots on older kernels])
AC_DEFINE([PAM_TTY_KLUDGE], [1],
[Work around problematic Linux PAM modules handling of PAM_TTY])
AC_DEFINE([LOCKED_PASSWD_PREFIX], ["!"],
[String used in /etc/passwd to denote locked account])
AC_DEFINE([SPT_TYPE], [SPT_REUSEARGV])
AC_DEFINE([LINK_OPNOTSUPP_ERRNO], [EPERM],
[Define to whatever link() returns for "not supported"
if it doesn't return EOPNOTSUPP.])
AC_DEFINE([_PATH_BTMP], ["/var/log/btmp"], [log for bad login attempts])
AC_DEFINE([USE_BTMP])
AC_DEFINE([LINUX_OOM_ADJUST], [1], [Adjust Linux out-of-memory killer])
AC_ARG_WITH([linux-memlock-onfault],
[ --with-linux-memlock-onfault Enables memory locking on Linux],
[
if test "x$withval" != "xno" ; then
AC_MSG_CHECKING([for MCL_ONFAULT])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM(
[[ #include <sys/mman.h> ]],
[[ mlockall(MCL_FUTURE | MCL_ONFAULT); ]],
)],
[
AC_MSG_RESULT([supported])
AC_DEFINE([LINUX_MEMLOCK_ONFAULT], [1],
[Lock all memory to protect sshd against Linux kcompactd] )],
[
AC_MSG_RESULT([not supported])
AC_MSG_ERROR([MCL_ONFAULT is not available on your system])
])
fi
],
)
AC_DEFINE([SYSTEMD_NOTIFY], [1], [Have sshd notify systemd on start/reload])
inet6_default_4in6=yes
case `uname -r` in
1.*|2.0.*)
AC_DEFINE([BROKEN_CMSG_TYPE], [1],
[Define if cmsg_type is not passed correctly])
;;
esac
# tun(4) forwarding compat code
AC_CHECK_HEADERS([linux/if_tun.h])
if test "x$ac_cv_header_linux_if_tun_h" = "xyes" ; then
AC_DEFINE([SSH_TUN_LINUX], [1],
[Open tunnel devices the Linux tun/tap way])
AC_DEFINE([SSH_TUN_COMPAT_AF], [1],
[Use tunnel device compatibility to OpenBSD])
AC_DEFINE([SSH_TUN_PREPEND_AF], [1],
[Prepend the address family to IP tunnel traffic])
fi
AC_CHECK_HEADER([linux/if.h],
AC_DEFINE([SYS_RDOMAIN_LINUX], [1],
[Support routing domains using Linux VRF]), [], [
#ifdef HAVE_SYS_TYPES_H
# include <sys/types.h>
#endif
])
AC_CHECK_HEADERS([linux/seccomp.h linux/filter.h linux/audit.h], [],
[], [#include <linux/types.h>])
# Obtain MIPS ABI
case "$host" in
mips*)
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#if _MIPS_SIM != _ABIO32
#error
#endif
]])],[mips_abi="o32"],[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#if _MIPS_SIM != _ABIN32
#error
#endif
]])],[mips_abi="n32"],[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#if _MIPS_SIM != _ABI64
#error
#endif
]])],[mips_abi="n64"],[AC_MSG_ERROR([unknown MIPS ABI])
])
])
])
;;
esac
AC_MSG_CHECKING([for seccomp architecture])