config.h.in revision 1.9
1/* config.h.in.  Generated from configure.ac by autoheader.  */
2
3/* Define if building universal (internal helper macro) */
4#undef AC_APPLE_UNIVERSAL_BUILD
5
6/* Define if you cannot bind() before connect() for TCP sockets. */
7#undef BROKEN_TCP_BIND_BEFORE_CONNECT
8
9/* dnsrps $librpz_name */
10#undef DNSRPS_LIBRPZ_PATH
11
12/* 0=no DNSRPS 1=static link 2=dlopen() */
13#undef DNSRPS_LIB_OPEN
14
15/* Define to enable "rrset-order fixed" syntax. */
16#undef DNS_RDATASET_FIXED
17
18/* Define to enable American Fuzzy Lop test harness */
19#undef ENABLE_AFL
20
21/* define if you want TCP_FASTOPEN enabled if available */
22#undef ENABLE_TCP_FASTOPEN
23
24/* Solaris hack to get select_large_fdset. */
25#undef FD_SETSIZE
26
27/* Define to nothing if C supports flexible array members, and to 1 if it does
28   not. That way, with a declaration like `struct s { int n; double
29   d[FLEXIBLE_ARRAY_MEMBER]; };', the struct hack can be used with pre-C99
30   compilers. When computing the size of such an object, don't use 'sizeof
31   (struct s)' as it overestimates the size. Use 'offsetof (struct s, d)'
32   instead. Don't use 'offsetof (struct s, d[0])', as this doesn't work with
33   MSVC and with C++ compilers. */
34#undef FLEXIBLE_ARRAY_MEMBER
35
36/* Define to 1 if you have the `arc4random' function. */
37#undef HAVE_ARC4RANDOM
38
39/* Define to 1 if you have the `arc4random_buf' function. */
40#undef HAVE_ARC4RANDOM_BUF
41
42/* Define to 1 if you have the `arc4random_uniform' function. */
43#undef HAVE_ARC4RANDOM_UNIFORM
44
45/* define if the ARM yield instruction is available */
46#undef HAVE_ARM_YIELD
47
48/* Define to 1 if the compiler supports __builtin_clz. */
49#undef HAVE_BUILTIN_CLZ
50
51/* Define to 1 if the compiler supports __builtin_expect. */
52#undef HAVE_BUILTIN_EXPECT
53
54/* define if the compiler supports __builtin_unreachable(). */
55#undef HAVE_BUILTIN_UNREACHABLE
56
57/* Define to 1 if you have the `chroot' function. */
58#undef HAVE_CHROOT
59
60/* Define if clock_gettime is available. */
61#undef HAVE_CLOCK_GETTIME
62
63/* Use CMocka */
64#undef HAVE_CMOCKA
65
66/* Define to 1 if you have the `cpuset_setaffinity' function. */
67#undef HAVE_CPUSET_SETAFFINITY
68
69/* Define to 1 if you have the `CRYPTO_zalloc' function. */
70#undef HAVE_CRYPTO_ZALLOC
71
72/* Define to 1 if you have the <devpoll.h> header file. */
73#undef HAVE_DEVPOLL_H
74
75/* Define to 1 if you have the `DH_get0_key' function. */
76#undef HAVE_DH_GET0_KEY
77
78/* Define to 1 if you have the `dlclose' function. */
79#undef HAVE_DLCLOSE
80
81/* Define to 1 if you have the <dlfcn.h> header file. */
82#undef HAVE_DLFCN_H
83
84/* Define to 1 if you have the `dlopen' function. */
85#undef HAVE_DLOPEN
86
87/* Define to 1 if you have the `dlsym' function. */
88#undef HAVE_DLSYM
89
90/* Define to 1 to enable dnstap support */
91#undef HAVE_DNSTAP
92
93/* Define to 1 if you have the `ECDSA_sign' function. */
94#undef HAVE_ECDSA_SIGN
95
96/* Define to 1 if you have the `ECDSA_SIG_get0' function. */
97#undef HAVE_ECDSA_SIG_GET0
98
99/* Define to 1 if you have the `ECDSA_verify' function. */
100#undef HAVE_ECDSA_VERIFY
101
102/* Define to 1 if you have the <editline/readline.h> header file. */
103#undef HAVE_EDITLINE_READLINE_H
104
105/* Define to 1 if you have the <edit/readline/history.h> header file. */
106#undef HAVE_EDIT_READLINE_HISTORY_H
107
108/* Define to 1 if you have the <edit/readline/readline.h> header file. */
109#undef HAVE_EDIT_READLINE_READLINE_H
110
111/* Define to 1 if you have the `epoll_create1' function. */
112#undef HAVE_EPOLL_CREATE1
113
114/* Define to 1 if you have the `EVP_aes_128_ecb' function. */
115#undef HAVE_EVP_AES_128_ECB
116
117/* Define to 1 if you have the `EVP_aes_192_ecb' function. */
118#undef HAVE_EVP_AES_192_ECB
119
120/* Define to 1 if you have the `EVP_aes_256_ecb' function. */
121#undef HAVE_EVP_AES_256_ECB
122
123/* Define to 1 if you have the `EVP_CIPHER_CTX_free' function. */
124#undef HAVE_EVP_CIPHER_CTX_FREE
125
126/* Define to 1 if you have the `EVP_CIPHER_CTX_new' function. */
127#undef HAVE_EVP_CIPHER_CTX_NEW
128
129/* Define to 1 if you have the `EVP_MD_CTX_free' function. */
130#undef HAVE_EVP_MD_CTX_FREE
131
132/* Define to 1 if you have the `EVP_MD_CTX_new' function. */
133#undef HAVE_EVP_MD_CTX_NEW
134
135/* Define to 1 if you have the `EVP_MD_CTX_reset' function. */
136#undef HAVE_EVP_MD_CTX_RESET
137
138/* Define to 1 if you have the `EVP_sha1' function. */
139#undef HAVE_EVP_SHA1
140
141/* Define to 1 if you have the `EVP_sha224' function. */
142#undef HAVE_EVP_SHA224
143
144/* Define to 1 if you have the `EVP_sha256' function. */
145#undef HAVE_EVP_SHA256
146
147/* Define to 1 if you have the `EVP_sha384' function. */
148#undef HAVE_EVP_SHA384
149
150/* Define to 1 if you have the `EVP_sha512' function. */
151#undef HAVE_EVP_SHA512
152
153/* Define to 1 if you have the `explicit_bzero' function. */
154#undef HAVE_EXPLICIT_BZERO
155
156/* Define to 1 if you have the <fcntl.h> header file. */
157#undef HAVE_FCNTL_H
158
159/* Define to 1 if you have the `FIPS_mode' function. */
160#undef HAVE_FIPS_MODE
161
162/* Define to 1 if you have the `flockfile' function. */
163#undef HAVE_FLOCKFILE
164
165/* Define to 1 if fseeko (and presumably ftello) exists and is declared. */
166#undef HAVE_FSEEKO
167
168/* Build with GeoIP2 support */
169#undef HAVE_GEOIP2
170
171/* Define to 1 if you have the `getc_unlocked' function. */
172#undef HAVE_GETC_UNLOCKED
173
174/* Define to 1 if you have the `getpassphrase' function. */
175#undef HAVE_GETPASSPHRASE
176
177/* Define to 1 if you have the `getrandom' function. */
178#undef HAVE_GETRANDOM
179
180/* Define to use gperftools CPU profiler. */
181#undef HAVE_GPERFTOOLS_PROFILER
182
183/* Define to 1 if you have the <gssapi/gssapi.h> header file. */
184#undef HAVE_GSSAPI_GSSAPI_H
185
186/* Define to 1 if you have the <gssapi/gssapi_krb5.h> header file. */
187#undef HAVE_GSSAPI_GSSAPI_KRB5_H
188
189/* Define to 1 if you have the <gssapi.h> header file. */
190#undef HAVE_GSSAPI_H
191
192/* Define to 1 if you have the <gssapi_krb5.h> header file. */
193#undef HAVE_GSSAPI_KRB5_H
194
195/* Define to 1 if you have the `HMAC_CTX_free' function. */
196#undef HAVE_HMAC_CTX_FREE
197
198/* Define to 1 if you have the `HMAC_CTX_get_md' function. */
199#undef HAVE_HMAC_CTX_GET_MD
200
201/* Define to 1 if you have the `HMAC_CTX_new' function. */
202#undef HAVE_HMAC_CTX_NEW
203
204/* Define to 1 if you have the `HMAC_CTX_reset' function. */
205#undef HAVE_HMAC_CTX_RESET
206
207/* Define to 1 if you have the <idn2.h> header file. */
208#undef HAVE_IDN2_H
209
210/* Define to 1 if you have the `if_nametoindex' function. */
211#undef HAVE_IF_NAMETOINDEX
212
213/* Define to 1 if you have the <inttypes.h> header file. */
214#undef HAVE_INTTYPES_H
215
216/* Use json-c library */
217#undef HAVE_JSON_C
218
219/* Define to 1 if you have the <kerberosv5/krb5.h> header file. */
220#undef HAVE_KERBEROSV5_KRB5_H
221
222/* Define to 1 if you have the `kqueue' function. */
223#undef HAVE_KQUEUE
224
225/* Define to 1 if you have the <krb5.h> header file. */
226#undef HAVE_KRB5_H
227
228/* Define to 1 if you have the <krb5/krb5.h> header file. */
229#undef HAVE_KRB5_KRB5_H
230
231/* define if system have backtrace function */
232#undef HAVE_LIBCTRACE
233
234/* Define if libidn2 was found */
235#undef HAVE_LIBIDN2
236
237/* Define to 1 if you have the `nsl' library (-lnsl). */
238#undef HAVE_LIBNSL
239
240/* Define to 1 if you have the `scf' library (-lscf). */
241#undef HAVE_LIBSCF
242
243/* Define to 1 if you have the `socket' library (-lsocket). */
244#undef HAVE_LIBSOCKET
245
246/* Use libxml2 library */
247#undef HAVE_LIBXML2
248
249/* Define to 1 if you have the <linux/netlink.h> header file. */
250#undef HAVE_LINUX_NETLINK_H
251
252/* Define to 1 if you have the <linux/rtnetlink.h> header file. */
253#undef HAVE_LINUX_RTNETLINK_H
254
255/* Define if lmdb was found */
256#undef HAVE_LMDB
257
258/* Define to 1 if you have the <locale.h> header file. */
259#undef HAVE_LOCALE_H
260
261/* Define to 1 if you have the <memory.h> header file. */
262#undef HAVE_MEMORY_H
263
264/* Define to 1 if you have the `mmap' function. */
265#undef HAVE_MMAP
266
267/* Define to 1 if you have the `nanosleep' function. */
268#undef HAVE_NANOSLEEP
269
270/* Define to 1 if you have the <net/if6.h> header file. */
271#undef HAVE_NET_IF6_H
272
273/* Define to 1 if you have the <net/route.h> header file. */
274#undef HAVE_NET_ROUTE_H
275
276/* define if OpenSSL supports Ed25519 */
277#undef HAVE_OPENSSL_ED25519
278
279/* define if OpenSSL supports Ed448 */
280#undef HAVE_OPENSSL_ED448
281
282/* Define to 1 if you have the `processor_bind' function. */
283#undef HAVE_PROCESSOR_BIND
284
285/* Define if you have POSIX threads libraries and header files. */
286#undef HAVE_PTHREAD
287
288/* Define to 1 if you have the `pthread_attr_getstacksize' function. */
289#undef HAVE_PTHREAD_ATTR_GETSTACKSIZE
290
291/* Define to 1 if you have the `pthread_attr_setstacksize' function. */
292#undef HAVE_PTHREAD_ATTR_SETSTACKSIZE
293
294/* Support for PTHREAD_MUTEX_ADAPTIVE_NP */
295#undef HAVE_PTHREAD_MUTEX_ADAPTIVE_NP
296
297/* Define to 1 if you have the <pthread_np.h> header file. */
298#undef HAVE_PTHREAD_NP_H
299
300/* Have PTHREAD_PRIO_INHERIT. */
301#undef HAVE_PTHREAD_PRIO_INHERIT
302
303/* Define to 1 if you have the `pthread_rwlock_rdlock' function. */
304#undef HAVE_PTHREAD_RWLOCK_RDLOCK
305
306/* Define to 1 if you have the `pthread_setaffinity_np' function. */
307#undef HAVE_PTHREAD_SETAFFINITY_NP
308
309/* Define to 1 if you have the `pthread_setname_np' function. */
310#undef HAVE_PTHREAD_SETNAME_NP
311
312/* Define to 1 if you have the `pthread_set_name_np' function. */
313#undef HAVE_PTHREAD_SET_NAME_NP
314
315/* Define to 1 if you have the `pthread_yield' function. */
316#undef HAVE_PTHREAD_YIELD
317
318/* Define to 1 if you have the `pthread_yield_np' function. */
319#undef HAVE_PTHREAD_YIELD_NP
320
321/* Define to 1 if you have the `readline' function. */
322#undef HAVE_READLINE
323
324/* Define to 1 if you have the <readline/history.h> header file. */
325#undef HAVE_READLINE_HISTORY_H
326
327/* Define to 1 if you have the <readline/readline.h> header file. */
328#undef HAVE_READLINE_READLINE_H
329
330/* Define to 1 if you have the <regex.h> header file. */
331#undef HAVE_REGEX_H
332
333/* Define to 1 if you have the `RSA_set0_key' function. */
334#undef HAVE_RSA_SET0_KEY
335
336/* Define to 1 if you have the <sched.h> header file. */
337#undef HAVE_SCHED_H
338
339/* Define to 1 if you have the `sched_setaffinity' function. */
340#undef HAVE_SCHED_SETAFFINITY
341
342/* Define to 1 if you have the `sched_yield' function. */
343#undef HAVE_SCHED_YIELD
344
345/* Define to 1 if you have the `setegid' function. */
346#undef HAVE_SETEGID
347
348/* Define to 1 if you have the `seteuid' function. */
349#undef HAVE_SETEUID
350
351/* Define to 1 if you have the `setlocale' function. */
352#undef HAVE_SETLOCALE
353
354/* Define to 1 if you have the `setresgid' function. */
355#undef HAVE_SETRESGID
356
357/* Define to 1 if you have the `setresuid' function. */
358#undef HAVE_SETRESUID
359
360/* define if the SPARC pause instruction is available */
361#undef HAVE_SPARC_PAUSE
362
363/* define if struct stat has st_mtim.tv_nsec field */
364#undef HAVE_STAT_NSEC
365
366/* Define to 1 if you have the <stdalign.h> header file. */
367#undef HAVE_STDALIGN_H
368
369/* Define to 1 if you have the <stdatomic.h> header file. */
370#undef HAVE_STDATOMIC_H
371
372/* Define to 1 if you have the <stdint.h> header file. */
373#undef HAVE_STDINT_H
374
375/* Define to 1 if you have the <stdlib.h> header file. */
376#undef HAVE_STDLIB_H
377
378/* Define to 1 if you have the <strings.h> header file. */
379#undef HAVE_STRINGS_H
380
381/* Define to 1 if you have the <string.h> header file. */
382#undef HAVE_STRING_H
383
384/* Define to 1 if you have the `strlcat' function. */
385#undef HAVE_STRLCAT
386
387/* Define to 1 if you have the `strlcpy' function. */
388#undef HAVE_STRLCPY
389
390/* Define to 1 if you have the `sysconf' function. */
391#undef HAVE_SYSCONF
392
393/* Define to 1 if you have the `sysctlbyname' function. */
394#undef HAVE_SYSCTLBYNAME
395
396/* Define to 1 if you have the <sys/capability.h> header file. */
397#undef HAVE_SYS_CAPABILITY_H
398
399/* Define to 1 if you have the <sys/cpuset.h> header file. */
400#undef HAVE_SYS_CPUSET_H
401
402/* Define to 1 if you have the <sys/devpoll.h> header file. */
403#undef HAVE_SYS_DEVPOLL_H
404
405/* Define to 1 if you have the <sys/mman.h> header file. */
406#undef HAVE_SYS_MMAN_H
407
408/* Define to 1 if you have the <sys/param.h> header file. */
409#undef HAVE_SYS_PARAM_H
410
411/* Define to 1 if you have the <sys/procset.h> header file. */
412#undef HAVE_SYS_PROCSET_H
413
414/* Define to 1 if you have the <sys/select.h> header file. */
415#undef HAVE_SYS_SELECT_H
416
417/* Define to 1 if you have the <sys/socket.h> header file. */
418#undef HAVE_SYS_SOCKET_H
419
420/* Define to 1 if you have the <sys/sockio.h> header file. */
421#undef HAVE_SYS_SOCKIO_H
422
423/* Define to 1 if you have the <sys/stat.h> header file. */
424#undef HAVE_SYS_STAT_H
425
426/* Define to 1 if you have the <sys/sysctl.h> header file. */
427#undef HAVE_SYS_SYSCTL_H
428
429/* Define to 1 if you have the <sys/time.h> header file. */
430#undef HAVE_SYS_TIME_H
431
432/* Define to 1 if you have the <sys/types.h> header file. */
433#undef HAVE_SYS_TYPES_H
434
435/* Define to 1 if you have the <sys/un.h> header file. */
436#undef HAVE_SYS_UN_H
437
438/* Define to 1 if you have the <threads.h> header file. */
439#undef HAVE_THREADS_H
440
441/* Define if thread_local keyword is available */
442#undef HAVE_THREAD_LOCAL
443
444/* Define if Thread-Local Storage is available */
445#undef HAVE_TLS
446
447/* Define to 1 if you have the `TLS_server_method' function. */
448#undef HAVE_TLS_SERVER_METHOD
449
450/* Define to 1 if you have the `tzset' function. */
451#undef HAVE_TZSET
452
453/* Define to 1 if you have the <uchar.h> header file. */
454#undef HAVE_UCHAR_H
455
456/* Define to 1 if the system has the type `uintptr_t'. */
457#undef HAVE_UINTPTR_T
458
459/* define if uname is available */
460#undef HAVE_UNAME
461
462/* Define to 1 if you have the <unistd.h> header file. */
463#undef HAVE_UNISTD_H
464
465/* define if the compiler supports _Unwind_Backtrace() */
466#undef HAVE_UNWIND_BACKTRACE
467
468/* Define to 1 if you have the `usleep' function. */
469#undef HAVE_USLEEP
470
471/* Define to 1 if you have the `uv_handle_get_data' function. */
472#undef HAVE_UV_HANDLE_GET_DATA
473
474/* Define to 1 if you have the `uv_handle_set_data' function. */
475#undef HAVE_UV_HANDLE_SET_DATA
476
477/* Define to 1 if you have the `uv_import' function. */
478#undef HAVE_UV_IMPORT
479
480/* Define to 1 if you have the `uv_translate_sys_error' function. */
481#undef HAVE_UV_TRANSLATE_SYS_ERROR
482
483/* Define to 1 if you have the `uv_udp_connect' function. */
484#undef HAVE_UV_UDP_CONNECT
485
486/* Use zlib library */
487#undef HAVE_ZLIB
488
489/* define if __atomic builtins are not available */
490#undef HAVE___ATOMIC
491
492/* Define if __thread keyword is available */
493#undef HAVE___THREAD
494
495/* Define if you want to use inline buffers */
496#undef ISC_BUFFER_USEINLINE
497
498/* Define to allow building of objects for dlopen(). */
499#undef ISC_DLZ_DLOPEN
500
501/* Define to emulate atomic variables with mutexes. */
502#undef ISC_MUTEX_ATOMICS
503
504/* define if the linker supports --wrap option */
505#undef LD_WRAP
506
507/* have __attribute__s used in librpz.h */
508#undef LIBRPZ_HAVE_ATTR
509
510/* Define to the sub-directory where libtool stores uninstalled libraries. */
511#undef LT_OBJDIR
512
513/* Defined if extern char *optarg is not declared. */
514#undef NEED_OPTARG
515
516/* Define if connect does not honour the permission on the UNIX domain socket.
517   */
518#undef NEED_SECURE_DIRECTORY
519
520/* Define to the address where bug reports for this package should be sent. */
521#undef PACKAGE_BUGREPORT
522
523/* Define to the full name of this package. */
524#undef PACKAGE_NAME
525
526/* Define to the full name and version of this package. */
527#undef PACKAGE_STRING
528
529/* Define to the one symbol short name of this package. */
530#undef PACKAGE_TARNAME
531
532/* Define to the home page for this package. */
533#undef PACKAGE_URL
534
535/* Define to the version of this package. */
536#undef PACKAGE_VERSION
537
538/* define the default PKCS11 library path */
539#undef PK11_LIB_LOCATION
540
541/* Sets which flag to pass to open/fcntl to make non-blocking
542   (O_NDELAY/O_NONBLOCK). */
543#undef PORT_NONBLOCK
544
545/* Define to necessary symbol if this constant uses a non-standard name on
546   your system. */
547#undef PTHREAD_CREATE_JOINABLE
548
549/* Define to 1 if you have the ANSI C header files. */
550#undef STDC_HEADERS
551
552/* Define to 1 if you can safely include both <sys/time.h> and <time.h>. */
553#undef TIME_WITH_SYS_TIME
554
555/* Define to use default system tuning. */
556#undef TUNE_LARGE
557
558/* define if we can use backtrace */
559#undef USE_BACKTRACE
560
561/* Enable DNS Response Policy Service API */
562#undef USE_DNSRPS
563
564/* Defined if you need to use ioctl(FIONBIO) instead a fcntl call to make
565   non-blocking. */
566#undef USE_FIONBIO_IOCTL
567
568/* Define if libtool is used for compilation */
569#undef USE_LIBTOOL
570
571/* define if OpenSSL is used for Public-Key Cryptography */
572#undef USE_OPENSSL
573
574/* define if PKCS11 is used for Public-Key Cryptography */
575#undef USE_PKCS11
576
577/* Define if you want to use pthread rwlock implementation */
578#undef USE_PTHREAD_RWLOCK
579
580/* Enable extensions on AIX 3, Interix.  */
581#ifndef _ALL_SOURCE
582# undef _ALL_SOURCE
583#endif
584/* Enable GNU extensions on systems that have them.  */
585#ifndef _GNU_SOURCE
586# undef _GNU_SOURCE
587#endif
588/* Enable threading extensions on Solaris.  */
589#ifndef _POSIX_PTHREAD_SEMANTICS
590# undef _POSIX_PTHREAD_SEMANTICS
591#endif
592/* Enable extensions on HP NonStop.  */
593#ifndef _TANDEM_SOURCE
594# undef _TANDEM_SOURCE
595#endif
596/* Enable general extensions on Solaris.  */
597#ifndef __EXTENSIONS__
598# undef __EXTENSIONS__
599#endif
600
601
602/* the default value of dnssec-validation option */
603#undef VALIDATION_DEFAULT
604
605/* Define to enable very verbose query trace logging. */
606#undef WANT_QUERYTRACE
607
608/* Define WORDS_BIGENDIAN to 1 if your processor stores words with the most
609   significant byte first (like Motorola and SPARC, unlike Intel). */
610#if defined AC_APPLE_UNIVERSAL_BUILD
611# if defined __BIG_ENDIAN__
612#  define WORDS_BIGENDIAN 1
613# endif
614#else
615# ifndef WORDS_BIGENDIAN
616#  undef WORDS_BIGENDIAN
617# endif
618#endif
619
620/* Enable large inode numbers on Mac OS X 10.5.  */
621#ifndef _DARWIN_USE_64_BIT_INODE
622# define _DARWIN_USE_64_BIT_INODE 1
623#endif
624
625/* Number of bits in a file offset, on hosts where this is settable. */
626#undef _FILE_OFFSET_BITS
627
628/* Define to 1 to make fseeko visible on some hosts (e.g. glibc 2.2). */
629#undef _LARGEFILE_SOURCE
630
631/* Define for large files, on AIX-style hosts. */
632#undef _LARGE_FILES
633
634/* Define to 1 if on MINIX. */
635#undef _MINIX
636
637/* Define to 2 if the system does not provide POSIX.1 features except with
638   this defined. */
639#undef _POSIX_1_SOURCE
640
641/* Define to 1 if you need to in order for `stat' and other things to work. */
642#undef _POSIX_SOURCE
643
644/* Select RFC3542 IPv6 API on macOS */
645#undef __APPLE_USE_RFC_3542
646
647/* Define to empty if `const' does not conform to ANSI C. */
648#undef const
649
650/* Define to `__inline__' or `__inline' if that's what the C compiler
651   calls it, or to nothing if 'inline' is not supported under any name.  */
652#ifndef __cplusplus
653#undef inline
654#endif
655
656/* Define to `unsigned int' if <sys/types.h> does not define. */
657#undef size_t
658
659/* Define to `int' if <sys/types.h> does not define. */
660#undef ssize_t
661
662/* Define to the type of an unsigned integer type wide enough to hold a
663   pointer, if such a type exists, and if the system does not define it. */
664#undef uintptr_t
665
666/* Define to empty if the keyword `volatile' does not work. Warning: valid
667   code using `volatile' can become incorrect without. Disable with care. */
668#undef volatile
669