forked from rathena/rathena
-
Notifications
You must be signed in to change notification settings - Fork 8
/
configure.ac
1374 lines (1249 loc) · 28.2 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
# -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
AC_INIT(rAthena)
AC_REVISION($Revision$)
AC_PREREQ([2.59])
AC_LANG([C++])
AC_LANG_COMPILER_REQUIRE
AC_CONFIG_SRCDIR([src/common/cbasetypes.hpp])
AC_CONFIG_FILES([Makefile src/common/Makefile])
AC_CONFIG_FILES([3rdparty/libconfig/Makefile 3rdparty/yaml-cpp/Makefile 3rdparty/rapidyaml/Makefile 3rdparty/httplib/Makefile])
AC_CONFIG_FILES([src/char/Makefile src/login/Makefile])
AC_CONFIG_FILES([src/map/Makefile src/tool/Makefile])
AC_CONFIG_FILES([src/web/Makefile])
AC_GNU_SOURCE
#
# Memory managers
#
AC_ARG_ENABLE(
[manager],
AC_HELP_STRING(
[--enable-manager=ARG],
[memory managers: no, builtin, memwatch, dmalloc, gcollect, bcheck (defaults to builtin)]
),
[
enable_manager="$enableval"
case $enableval in
"no");;
"builtin");;
"memwatch");;
"dmalloc");;
"gcollect");;
"bcheck");;
*) AC_MSG_ERROR([[unknown memory manager '$enableval'... stopping]]);;
esac
],
[enable_manager="builtin"]
)
#
# packetver
#
AC_ARG_ENABLE(
[packetver],
AC_HELP_STRING(
[--enable-packetver=ARG],
[Sets the PACKETVER define. (see src/common/mmo.hpp)]
),
[enable_packetver="$enableval"],
[enable_packetver=""]
)
#
# Epoll
#
AC_ARG_ENABLE(
[epoll],
AC_HELP_STRING(
[--enable-epoll],
[use epoll(4) on Linux]
),
[enable_epoll=$enableval],
[enable_epoll=no]
)
if test x$enable_epoll = xno; then
have_linux_epoll=no
else
AC_MSG_CHECKING([for Linux epoll(4)])
AC_LINK_IFELSE([AC_LANG_PROGRAM(
[
#ifndef __linux__
#error This is not Linux
#endif
#include <sys/epoll.h>
],
[epoll_create1 (EPOLL_CLOEXEC);])],
[have_linux_epoll=yes],
[have_linux_epoll=no]
)
AC_MSG_RESULT([$have_linux_epoll])
fi
if test x$enable_epoll,$have_linux_epoll = xyes,no; then
AC_MSG_ERROR([epoll support explicitly enabled but not available])
fi
#
# debug
#
AC_ARG_ENABLE(
[debug],
AC_HELP_STRING(
[--enable-debug@<:@=ARG@:>@],
[
Compiles extra debug code. (disabled by default)
(available options: yes, no, gdb)
]
),
[
enable_debug="$enableval"
case $enableval in
"no");;
"yes");;
"gdb");;
*) AC_MSG_ERROR([[invalid argument --enable-debug=$enableval... stopping]]);;
esac
],
[enable_debug="no"]
)
#
# renewal
#
AC_ARG_ENABLE(
[prere],
AC_HELP_STRING(
[--enable-prere@<:@=ARG@:>@],
[
Compiles serv in prere mode. (disabled by default)
(available options: yes, no)
]
),
[
enable_prere="$enableval"
case $enableval in
"no");;
"yes");;
*) AC_MSG_ERROR([[invalid argument --enable-prere=$enableval... stopping]]);;
esac
],
[enable_prere="no"]
)
#
# VIP
#
AC_ARG_ENABLE(
[vip],
AC_HELP_STRING(
[--enable-vip@<:@=ARG@:>@],
[
Compiles serv with vip features. (disabled by default)
(available options: yes, no)
]
),
[
enable_vip="$enableval"
case $enableval in
"no");;
"yes");;
*) AC_MSG_ERROR([[invalid argument --enable-vip=$enableval... stopping]]);;
esac
],
[enable_vip="no"]
)
#
# warn
#
AC_ARG_ENABLE(
[warn],
AC_HELP_STRING(
[--enable-warn@<:@=ARG@:>@],
[
Compiles with warnings. (disabled by default)
(available options: yes, no, extra)
]
),
[
enable_warn="$enableval"
case $enableval in
"no");;
"yes");;
"extra");;
*) AC_MSG_ERROR([[invalid argument --enable-warn=$enableval... stopping]]);;
esac
],
[enable_warn="no"]
)
#
# Buildbot
#
AC_ARG_ENABLE(
[buildbot],
AC_HELP_STRING(
[--enable-buildbot@<:@=ARG@:>@],
[(available options: yes, no)]
),
[
enable_buildbot="$enableval"
case $enableval in
"no");;
"yes");;
*) AC_MSG_ERROR([[invalid argument --enable-buildbot=$enableval... stopping]]);;
esac
],
[enable_buildbot="no"]
)
#
# RDTSC as Tick Source
#
AC_ARG_ENABLE(
[rdtsc],
AC_HELP_STRING(
[--enable-rdtsc],
[
Uses rdtsc as timing source (disabled by default)
Enable it when you've timing issues.
(For example: in conjunction with XEN or Other Virtualization mechanisms)
Note:
Please ensure that you've disabled dynamic CPU-Frequencys, such as power saving options.
(On the most modern Dedicated Servers cpufreq is preconfigured, see your distribution's manual
how to disable it)
]
),
[
enable_rdtsc=1
],
[enable_rdtsc=0]
)
#
# Profiler
#
AC_ARG_ENABLE(
[profiler],
AC_HELP_STRING(
[--enable-profiler=ARG],
[Profilers: no, gprof (disabled by default)]
),
[
enable_profiler="$enableval"
case $enableval in
"no");;
"gprof");;
*) AC_MSG_ERROR([[invalid argument --enable-profiler=$enableval... stopping]]);;
esac
],
[enable_profiler="no"]
)
#
# 64bit
#
AC_ARG_ENABLE(
[64bit],
AC_HELP_STRING(
[--disable-64bit],
[
Enforce 32bit output on x86_64 systems.
]
),
[
enable_64bit="$enableval"
case $enableval in
"no");;
"yes");;
*) AC_MSG_ERROR([[invalid argument --enable-64bit=$enableval... stopping]]);;
esac
],
[enable_64bit="yes"]
)
#
# LTO
#
AC_ARG_ENABLE(
[lto],
AC_HELP_STRING(
[--enable-lto],
[
Enables or Disables Linktime Code Optimization (LTO is enabled by default)
]
),
[
enable_lto="$enableval"
case $enableval in
"no");;
"yes");;
*) AC_MSG_ERROR([[invalid argument --enable-lto=$disableval... stopping]]);;
esac
],
[enable_lto="no"]
)
#
# Optionally set the maximum number of network connections
# the core will be able to handle
#
AC_ARG_WITH(
[maxconn],
AC_HELP_STRING(
[--with-maxconn@<:@=ARG@:>@],
[optionally set the maximum connections the core can handle. By default the system header value will be used.
This will only be the compile time limit, make sure you set the correct limit with ulimit on your OS.]
),
[
if ! test "$withval" -ge 0 -o "$withval" -lt 0 2>&- ; then
AC_MSG_ERROR([Invalid argument --with-maxconn=$withval ... stopping])
else
CPPFLAGS="$CPPFLAGS -DMAXCONN=$withval"
fi
],
[
CPPFLAGS="$CPPFLAGS"
]
)
#
# output bin name
#
AC_ARG_WITH(
[outputlogin],
AC_HELP_STRING(
[--with-outputlogin@<:@=ARG@:>@],
[Specify the login-serv output name (defaults to login-server)]
),
[output_login="$withval"],
[output_login="login-server"]
)
AC_SUBST([OLOG],$output_login)
AC_ARG_WITH(
[outputchar],
AC_HELP_STRING(
[--with-outputchar@<:@=ARG@:>@],
[Specify the char-serv output name (defaults to char-server)]
),
[output_char="$withval"],
[output_char="char-server"]
)
AC_SUBST([OCHR],$output_char)
AC_ARG_WITH(
[outputmap],
AC_HELP_STRING(
[--with-outputmap@<:@=ARG@:>@],
[Specify the map-serv output name (defaults to map-server)]
),
[output_map="$withval"],
[output_map="map-server"]
)
AC_SUBST([OMAP],$output_map)
AC_ARG_WITH(
[outputweb],
AC_HELP_STRING(
[--with-outputweb@<:@=ARG@:>@],
[Specify the web-serv output name (defaults to web-server)]
),
[output_web="$withval"],
[output_web="web-server"]
)
AC_SUBST([OWEB],$output_web)
#
# Optionally specify the path to mysql_config
#
AC_ARG_WITH(
[mysql],
AC_HELP_STRING(
[--with-mysql@<:@=ARG@:>@],
[optionally specify the path to the mysql_config executable]
),
[
if test "$withval" != "no" ; then
if test ! -x "$withval" ; then
AC_MSG_ERROR([$withval is not an executable file])
fi
MYSQL_CONFIG_HOME="$withval"
fi
]
)
#
# Manual MYSQL_CFLAGS (optional)
#
AC_ARG_WITH(
[MYSQL_CFLAGS],
AC_HELP_STRING(
[--with-MYSQL_CFLAGS=ARG],
[specify MYSQL_CFLAGS manually (instead of using "mysql_config --include")]
),
[
manual_MYSQL_CFLAGS="yes"
MYSQL_CFLAGS="$withval"
],
[manual_MYSQL_CFLAGS="no"]
)
#
# Manual MYSQL_LIBS (optional)
#
AC_ARG_WITH(
[MYSQL_LIBS],
AC_HELP_STRING(
[--with-MYSQL_LIBS=ARG],
[specify MYSQL_LIBS manually (instead of using "mysql_config --libs")]
),
[
manual_MYSQL_LIBS="yes"
MYSQL_LIBS="$withval"
],
[manual_MYSQL_LIBS="no"]
)
#
# Enable/disable PCRE and optionally specify the path (optional library)
#
AC_ARG_WITH(
[pcre],
AC_HELP_STRING(
[--with-pcre@<:@=ARG@:>@],
[use PCRE library, optionally specify the full path of pcre installation directory (by default pcre is used if found)]
),
[
if test "$withval" = "no" ; then
want_pcre="no"
else
want_pcre="yes"
require_pcre="yes"
if test "$withval" != "yes" ; then
if test ! -d "$withval" ; then
AC_MSG_ERROR([$withval is not a directoy])
fi
PCRE_HOME="$withval"
fi
fi
],
[want_pcre="yes" require_pcre="no"]
)
#
# Specify the path of the zlib library (required library)
#
AC_ARG_WITH(
[zlib],
AC_HELP_STRING(
[--with-zlib=DIR],
[root directory path of zlib installation (defaults to /usr/local or /usr if not found in /usr/local).
Assumes that the header files are in DIR/include and the library files are in DIR/lib]
),
[
test -n "$withval" && ZLIB_HOME="$withval"
],
[
ZLIB_HOME=/usr/local
test ! -f "${ZLIB_HOME}/include/zlib.h" && ZLIB_HOME=/usr
]
)
###############################################################################
# Check for programs and types.
#
AC_PROG_MAKE_SET
AC_PROG_CC
AC_PROG_CXX
AC_PATH_PROG(AR, ar)
AC_LANG([C++])
CFLAGS="$CFLAGS -pipe -ffast-math -Wall"
CPPFLAGS="$CPPFLAGS -I../common"
CXXFLAGS="$CXXFLAGS -std=c++17"
#CXXFLAGS="$CXXFLAGS -std=gnu++17"
CXXFLAG_CLEARS="-std=c++17"
AC_C_BIGENDIAN(
[AC_MSG_ERROR([[bigendian is not supported... stopping]])],
,
[AC_MSG_WARN([[unable to determine endianess, only little endian is supported]])]
)
if test "$enable_64bit" = "no" ; then
AC_MSG_CHECKING([whether pointers can be stored in ints (old code)])
pointers_fit_in_ints="no"
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[static int test_array[((long int)sizeof(int)) == ((long int)sizeof(void*)) ? 1 : -1];]])],
[pointers_fit_in_ints="yes"],
[]
)
if test "$pointers_fit_in_ints" = "no" ; then
CFLAGS="$CFLAGS -m32"
LDFLAGS="$LDFLAGS -m32"
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[static int test_array[((long int)sizeof(int)) == ((long int)sizeof(void *)) ? 1 : -1];]])],
[pointers_fit_in_ints="yes (with -m32)"],
[]
)
fi
AC_MSG_RESULT($pointers_fit_in_ints)
if test "$pointers_fit_in_ints" = "no" ; then
AC_MSG_ERROR([pointers cannot be stored in ints, required for old code... stopping])
fi
fi
#
# check if we're producing 32bit code - so well produce binarys for at least i686 (speedup: cmovs, and cmpchg8 support)
#
AC_MSG_CHECKING([whether $CC produces 32bit code])
AC_RUN_IFELSE(
[AC_LANG_SOURCE([
int main(int argc, char **argv){
if(sizeof(void*) == 4) return 0;
else return 1;
}
])],
[
AC_MSG_RESULT([yes])
AC_MSG_CHECKING([whether $CC supports -march=i686 (and we can run it)])
OLD_CFLAGS="$CFLAGS"
OLD_LDFLAGS="$LDFLAGS"
CFLAGS="$CFLAGS -march=i686"
LDFLAGS="$LDFLAGS -march=i686"
AC_RUN_IFELSE(
[AC_LANG_SOURCE([
int main(int argc, char **argv) { return 0; }
])],
[
AC_MSG_RESULT([yes])
],
[
AC_MSG_RESULT([no])
CFLAGS="$OLD_CFLAGS"
LDFLAGS="$OLD_LDFLAGS"
],
[
AC_MSG_RESULT([guessing no])
CFLAGS="$OLD_CFLAGS"
LDFLAGS="$OLD_LDFLAGS"
]
)
],
[
AC_MSG_RESULT([no])
],
[
AC_MSG_RESULT([guessing no])
]
)
#
# Check if CC supports __thread attribute (Thread Local Storage)
# (Usually our OSX friends 're lacking support of it in older llvm versions ..)
#
AC_MSG_CHECKING([whether $CC supports __thread specifier (TLS)])
AC_RUN_IFELSE(
[AC_LANG_SOURCE([
__thread int g_Test = -1;
int main(int argc, char **argv){
g_Test = 0;
return g_Test;
}
])],
[
AC_MSG_RESULT([yes])
CPPFLAGS="$CPPFLAGS -DHAS_TLS"
],
[
AC_MSG_RESULT([no])
]
)
#
# LTO Support test
#
if test "$enable_lto" != "no" ; then
OPT_LTO_AR=""
OPT_LTO=""
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -flto -fuse-linker-plugin -ffat-lto-objects"
OLD_LDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -flto -fuse-linker-plugin -ffat-lto-objects"
AC_MSG_CHECKING([whether $CC supports -ffat-lto-objects])
AC_RUN_IFELSE(
[AC_LANG_SOURCE([
int main(int argc, char **argv){
return 0;
}
])],
[
AC_MSG_RESULT([yes])
OPT_LTO_AR="-ffat-lto-objects"
],
[
AC_MSG_RESULT([no])
],
[
AC_MSG_RESULT([guessing no])
]
)
CFLAGS="$OLD_CFLAGS"
LDFLAGS="$OLD_LDFLAGS"
CFLAGS="$CFLAGS -flto -fuse-linker-plugin"
LDFLAGS="$LDFLAGS -flto -fuse-linker-plugin"
AC_MSG_CHECKING([whether $CC supports -flto -fuse-linker-plugin])
AC_RUN_IFELSE(
[AC_LANG_SOURCE([
int main(int argc, char **argv){
return 0;
}
])],
[
AC_MSG_RESULT([yes])
OPT_LTO_AR="-flto -fuse-linker-plugin $OPT_LTO_AR"
OPT_LTO="-flto -fuse-linker-plugin"
],
[
AC_MSG_RESULT([no])
],
[
AC_MSG_RESULT([guessing no])
]
)
CFLAGS="$OLD_CFLAGS"
LDFLAGS="$OLD_LDFLAGS"
fi
AC_DEFUN([AC_CHECK_COMPILER_WFLAG],
[
AC_MSG_CHECKING([whether $CC supports -W$1])
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Werror -W$1"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([int foo;])],
[
AC_MSG_RESULT([yes])
CFLAGS="$OLD_CFLAGS -W$1"
# Optionally, run a test
if test "x$2" != "x"; then
AC_MSG_CHECKING([whether $CC can actually use -W$1])
CFLAGS="$OLD_CFLAGS -Werror -W$1"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([$2])],
[
AC_MSG_RESULT([no])
CFLAGS="$OLD_CFLAGS"
]
[
AC_MSG_RESULT([yes])
CFLAGS="$OLD_CFLAGS -W$1"
],
)
fi
],
[
AC_MSG_RESULT([no])
CFLAGS="$OLD_CFLAGS"
]
)
]
)
AC_DEFUN([AC_CHECK_COMPILER_WNOFLAG],
[
AC_MSG_CHECKING([whether $CC supports -Wno-$1])
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Werror -Wno-$1"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([int foo;])],
[
# Recent versions of gcc don't fail if -Wno-foo is not recognized
# (unless there are also other warnings), so we also check for -Wfoo
# which always fails if not supported
CFLAGS="$OLD_CFLAGS -Werror -W$1"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([int foo;])],
[
AC_MSG_RESULT([yes])
CFLAGS="$OLD_CFLAGS -Wno-$1"
# Optionally, run a test
if test "x$2" != "x"; then
AC_MSG_CHECKING([whether $CC can actually use -Wno-$1])
CFLAGS="$OLD_CFLAGS -Werror -W$1"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([$2])],
[
AC_MSG_RESULT([not needed but enabled])
CFLAGS="$OLD_CFLAGS"
],
[
CFLAGS="$OLD_CFLAGS -Werror -Wno-$1"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([$2])],
[
AC_MSG_RESULT([yes])
CFLAGS="$OLD_CFLAGS -Wno-$1"
],
[
AC_MSG_RESULT([no])
CFLAGS="$OLD_CFLAGS"
]
)
]
)
fi
],
[
AC_MSG_RESULT([no])
CFLAGS="$OLD_CFLAGS"
]
)
],
[
AC_MSG_RESULT([no])
CFLAGS="$OLD_CFLAGS"
]
)
]
)
AC_CHECK_COMPILER_WNOFLAG(unused-parameter, [int foo(int bar) { return 0; }])
AC_CHECK_COMPILER_WFLAG(empty-body)
AC_CHECK_COMPILER_WNOFLAG(switch)
AC_CHECK_COMPILER_WNOFLAG(missing-field-initializers)
AC_MSG_CHECKING([whether compiler is clang])
if test -n "`$CC --version | grep -i clang`" ; then
AC_MSG_RESULT([yes, skipping some flags..])
else
AC_MSG_RESULT([no])
AC_CHECK_COMPILER_WNOFLAG(maybe-uninitialized)
AC_CHECK_COMPILER_WNOFLAG(clobbered)
fi
# Certain versions of gcc make -Wshadow completely useless by making it flood
# you with unnecessary warnings <https://lkml.org/lkml/2006/11/28/239>
# Let's check if we can really use it
SAVED_OLD_CFLAGS="$CFLAGS"
AC_CHECK_COMPILER_WFLAG(shadow)
if test "x$CFLAGS" != "x$SAVED_OLD_CFLAGS"; then
AC_MSG_CHECKING([whether $CC can efficiently use -Wshadow])
NEW_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Werror -Wshadow"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([
int foo(void) {
return 0;
}
int bar(void) {
int foo = 0;
return foo + 1;
}
])],
[
AC_MSG_RESULT([yes])
CFLAGS="$NEW_CFLAGS"
],
[
AC_MSG_RESULT([no])
CFLAGS="$SAVED_OLD_CFLAGS"
]
)
fi
AC_MSG_CHECKING([whether $CC supports -fPIC])
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fPIC"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([int foo;])],
[
AC_MSG_RESULT([yes])
compiler_supports_pic="yes"
],
[
AC_MSG_RESULT([no])
compiler_supports_pic="no"
]
)
CFLAGS="$OLD_CFLAGS"
#
# option for shared objects
#
AC_MSG_CHECKING([how to make shared objects])
OLD_CFLAGS="$CFLAGS"
compiler_shared_objects=""
compiler_supports_shared_objects="no"
if test "$compiler_supports_pic" = "yes" ; then
my_shared_test_flags="$CFLAGS -fPIC"
fi
# default
CFLAGS="$my_shared_test_flags -shared"
AC_LINK_IFELSE(
[AC_LANG_SOURCE([
int bar = 0;
int foo(void)
{
return bar;
}
])],
[
compiler_shared_objects="-shared"
compiler_supports_shared_objects="yes"
]
)
# BeOS specific
CFLAGS="$my_shared_test_flags -nostart"
AC_LINK_IFELSE(
[AC_LANG_SOURCE([
int bar = 0;
int foo(void)
{
return bar;
}
])],
[
compiler_shared_objects="-nostart"
compiler_supports_shared_objects="yes"
]
)
CFLAGS="$OLD_CFLAGS"
if test "$compiler_supports_shared_objects" = "no" ; then
AC_MSG_RESULT([not supported])
AC_MSG_NOTICE([compiler is unable to generate shared objects, disabled plugins (optional)])
WITH_PLUGINS="no"
else
AC_MSG_RESULT([$compiler_shared_objects $compiler_supports_shared_objects])
SOFLAGS="$SOFLAGS $compiler_shared_objects"
AC_SUBST([SOFLAGS])
#
# On certain platforms, undefined references on shared libraries won't be checked
# unless explicitly required with the --no-undefined linker option
#
AC_MSG_CHECKING([whether $CC needs -Wl,--no-undefined to check for undefined references in shared objects])
OLD_CFLAGS="$CFLAGS"
CFLAGS="$SOFLAGS"
AC_LINK_IFELSE(
[AC_LANG_SOURCE([
void foo(void) {
foobar();
}
])],
[
CFLAGS="$SOFLAGS -Wl,--no-undefined"
AC_LINK_IFELSE(
[AC_LANG_SOURCE([
int bar = 0;
int foo(void) {
return bar;
}
])],
[
AC_MSG_RESULT([yes])
SOFLAGS="$SOFLAGS -Wl,--no-undefined"
],
[
AC_MSG_RESULT([unsupported (undefined references check will be ignored)])
]
)
],
[
AC_MSG_RESULT([no])
]
)
CFLAGS="$OLD_CFLAGS"
#
# shared objects need position independent code; some platforms emit
# it always, others need -fPIC
#
AC_MSG_CHECKING([whether $CC needs -fPIC for shared objects])
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $SOFLAGS"
WITH_PLUGINS="yes"
AC_LINK_IFELSE(
[AC_LANG_SOURCE([
int bar = 0;
int foo(void)
{
return bar;
}
])],
[
AC_MSG_RESULT([no])
CFLAGS="$OLD_CFLAGS"
],
[
if test "$compiler_supports_pic" = "yes" ; then
# Verify if -shared really fails due to lack of -fPIC or something else
CFLAGS="$CFLAGS -fPIC"
AC_LINK_IFELSE(
[AC_LANG_SOURCE([
int bar = 0;
int foo(void)
{
return bar;
}
])],
[
AC_MSG_RESULT([yes])
CFLAGS="$OLD_CFLAGS -fPIC"
],
[
AC_MSG_RESULT([no, but fails for another reason])
AC_MSG_ERROR([compiler is unable to compile shared objects for an unhandled reason, please report this with attached config.log... stopping])
]
)
else
# Disable compilation of plugins (optional), so 'make all' does not fail
AC_MSG_RESULT([yes, but unsupported])
AC_MSG_NOTICE([compiler is unable to generate position independent code, disabled plugins (optional)])
WITH_PLUGINS="no"
fi
]
)
fi
my_shared_test_flags=""
AC_SUBST([WITH_PLUGINS])
#
# -O2 implies -fstrict-aliasing, but the code is not safe for that
#
AC_MSG_CHECKING([whether $CC supports -fno-strict-aliasing])
OLD_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS -fno-strict-aliasing"
AC_COMPILE_IFELSE(
[AC_LANG_SOURCE([int foo;])],
[AC_MSG_RESULT([yes])],
[
AC_MSG_RESULT([no])
CPPFLAGS="$OLD_CPPFLAGS"
]
)
###############################################################################
# Check for libraries and header files.
#
#
# setrlimit - used to set the socket limit
#
AC_CHECK_FUNC([setrlimit],[CPPFLAGS="$CPPFLAGS -DHAVE_SETRLIMIT"])
#
# strnlen - string length with upper scan bound
#
AC_CHECK_FUNC([strnlen],[CPPFLAGS="$CPPFLAGS -DHAVE_STRNLEN"])
# libconfig
AC_CHECK_FUNCS([uselocale])
AC_CHECK_FUNCS([newlocale])
AC_CHECK_FUNCS([freelocale])
AC_CHECK_HEADERS([xlocale.h], [], [], [
AC_LANG_SOURCE([#ifdef HAVE_XLOCALE_H
# include <xlocale.h>
#endif
])])
#
# Memory manager
#
case $enable_manager in
"no")
CPPFLAGS="$CPPFLAGS -DNO_MEMMGR"
;;
"builtin")
# enabled by default