2 * PostgreSQL configuration-settings file.
4 * pg_config.h.in is processed by configure to produce pg_config.h.
6 * If you want to modify any of the tweakable settings in Part 2
7 * of this file, you can do it in pg_config.h.in before running configure,
8 * or in pg_config.h afterwards. Of course, if you edit pg_config.h, then your
9 * changes will be overwritten the next time you run configure.
11 * $Id: pg_config.h.in,v 1.21 2002/04/10 22:47:09 petere Exp $
19 *------------------------------------------------------------------------
20 * Part 1: feature symbols and limits that are set by configure based on
21 * user-supplied switches. This is first so that stuff in Part 2 can
22 * depend on these values.
24 * Beware of "fixing" configure-time mistakes by editing these values,
25 * since configure may have inserted the settings in other files as well
26 * as here. Best to rerun configure if you forgot --enable-multibyte
28 *------------------------------------------------------------------------
31 /* The version number is actually hard-coded into configure.in */
33 /* A canonical string containing the version number, platform, and C compiler */
36 /* Set to 1 if you want cyrillic recode (--enable-recode) */
39 /* Set to 1 if you want to use multibyte characters (--enable-multibyte) */
43 /* --enable-multibyte implies UNICODE_CONVERSION */
44 #define UNICODE_CONVERSION
47 /* Set to 1 if you want ASSERT checking (--enable-cassert) */
48 #undef USE_ASSERT_CHECKING
50 /* Set to 1 to use syslog() to write postmaster log (--enable-syslog) */
53 /* Define to build with Kerberos 4 support (--with-krb4[=DIR]) */
56 /* Define to build with Kerberos 5 support (--with-krb5[=DIR]) */
59 /* Kerberos name of the Postgres service principal (--with-krb-srvnam=NAME) */
62 /* Define to build with (Open)SSL support (--with-openssl[=DIR]) */
65 /* Define to build with PAM Support */
69 * DEF_PGPORT is the TCP port number on which the Postmaster listens and
70 * which clients will try to connect to. This is just a default value;
71 * it can be overridden at postmaster or client startup. It's awfully
72 * convenient if your clients have the right default compiled in, though.
73 * (--with-pgport=PORTNUM)
76 /* ... and once more as a string constant instead */
80 * Default soft limit on number of backend server processes per postmaster;
81 * this is just the default setting for the postmaster's -N switch.
82 * (--with-maxbackends=N)
84 #undef DEF_MAXBACKENDS
89 /* location of locale files */
92 /* Define to build the ODBC driver for unixODBC */
95 /* Define to build the ODBC driver for iODBC */
100 *------------------------------------------------------------------------
101 * Part 2: feature symbols and limits that are user-configurable, but
102 * only by editing this file ... there's no configure support for them.
104 * Editing this file and doing a full rebuild (and an initdb if noted)
105 * should be sufficient to change any of these.
106 *------------------------------------------------------------------------
110 * Default number of buffers in shared buffer pool (each of size BLCKSZ).
111 * This is just the default setting for the postmaster's -B switch.
112 * Perhaps it ought to be configurable from a configure switch.
113 * NOTE: default setting corresponds to the minimum number of buffers
114 * that postmaster.c will allow for the default MaxBackends value.
116 #define DEF_NBUFFERS (DEF_MAXBACKENDS > 8 ? DEF_MAXBACKENDS * 2 : 16)
119 * Size of a disk block --- this also limits the size of a tuple.
120 * You can set it bigger if you need bigger tuples (although TOAST
121 * should reduce the need to have large tuples, since fields can now
122 * be spread across multiple tuples).
124 * BLCKSZ must be a power of 2.
125 * The maximum possible value of BLCKSZ is currently 2^15 (32768).
126 * This is determined by the 15-bit widths of the lp_off and lp_len
127 * fields in ItemIdData (see include/storage/itemid.h).
129 * CAUTION: changing BLCKSZ requires an initdb.
134 * RELSEG_SIZE is the maximum number of blocks allowed in one disk file.
135 * Thus, the maximum size of a single file is RELSEG_SIZE * BLCKSZ;
136 * relations bigger than that are divided into multiple files.
138 * CAUTION: RELSEG_SIZE * BLCKSZ must be less than your OS' limit on file
139 * size. This is typically 2Gb or 4Gb in a 32-bit operating system. By
140 * default, we make the limit 1Gb to avoid any possible integer-overflow
141 * problems within the OS. A limit smaller than necessary only means we
142 * divide a large relation into more chunks than necessary, so it seems
143 * best to err in the direction of a small limit. (Besides, a power-of-2
144 * value saves a few cycles in md.c.)
146 * CAUTION: changing RELSEG_SIZE requires an initdb.
148 #define RELSEG_SIZE (0x40000000 / BLCKSZ)
151 * Maximum number of columns in an index and maximum number of arguments
152 * to a function. They must be the same value.
154 * The minimum value is 8 (index creation uses 8-argument functions).
155 * There is no specific upper limit, although large values will waste
156 * system-table space and processing time.
158 * CAUTION: changing these requires an initdb.
160 * BTW: if you need to call dynamically-loaded old-style C functions that
161 * have more than 16 arguments, you will also need to add cases to the
162 * switch statement in fmgr_oldstyle() in src/backend/utils/fmgr/fmgr.c.
163 * But consider converting such functions to new-style instead...
165 #define INDEX_MAX_KEYS 16
166 #define FUNC_MAX_ARGS INDEX_MAX_KEYS
169 * System default value for pg_attribute.attstattarget
171 #define DEFAULT_ATTSTATTARGET 10
174 * Define this to make libpgtcl's "pg_result -assign" command process C-style
175 * backslash sequences in returned tuple data and convert Postgres array
176 * attributes into Tcl lists. CAUTION: this conversion is *wrong* unless
177 * you install the routines in contrib/string/string_io to make the backend
178 * produce C-style backslash sequences in the first place.
180 /* #define TCL_ARRAYS */
183 * User locks are handled totally on the application side as long term
184 * cooperative locks which extend beyond the normal transaction boundaries.
185 * Their purpose is to indicate to an application that someone is `working'
186 * on an item. Define this flag to enable user locks. You will need the
187 * loadable module user-locks.c to use this feature.
192 * Define this if you want psql to _always_ ask for a username and a password
193 * for password authentication.
195 /* #define PSQL_ALWAYS_GET_PASSWORDS */
198 * Define this if you want to allow the lo_import and lo_export SQL functions
199 * to be executed by ordinary users. By default these functions are only
200 * available to the Postgres superuser. CAUTION: these functions are
201 * SECURITY HOLES since they can read and write any file that the Postgres
202 * backend has permission to access. If you turn this on, don't say we
205 /* #define ALLOW_DANGEROUS_LO_FUNCTIONS */
208 * Use btree bulkload code:
209 * this code is moderately slow (~10% slower) compared to the regular
210 * btree (insertion) build code on sorted or well-clustered data. on
211 * random data, however, the insertion build code is unusable -- the
212 * difference on a 60MB heap is a factor of 15 because the random
213 * probes into the btree thrash the buffer pool.
215 * Great thanks to Paul M. Aoki (aoki@CS.Berkeley.EDU)
217 #define FASTBUILD /* access/nbtree/nbtsort.c */
220 * MAXPGPATH: standard size of a pathname buffer in Postgres (hence,
221 * maximum usable pathname length is one less).
223 * We'd use a standard system header symbol for this, if there weren't
224 * so many to choose from: MAXPATHLEN, _POSIX_PATH_MAX, MAX_PATH, PATH_MAX
225 * are all defined by different "standards", and often have different
226 * values on the same platform! So we just punt and use a reasonably
227 * generous setting here.
229 #define MAXPGPATH 1024
232 * DEFAULT_MAX_EXPR_DEPTH: default value of max_expr_depth SET variable.
234 #define DEFAULT_MAX_EXPR_DEPTH 10000
237 * PG_SOMAXCONN: maximum accept-queue length limit passed to listen(2).
238 * You'd think we should use SOMAXCONN from <sys/socket.h>, but on many
239 * systems that symbol is much smaller than the kernel's actual limit.
240 * In any case, this symbol need be twiddled only if you have a kernel
241 * that refuses large limit values, rather than silently reducing the
242 * value to what it can handle (which is what most if not all Unixen do).
244 #define PG_SOMAXCONN 10000
247 * You can try changing this if you have a machine with bytes of another
248 * size, but no guarantee...
250 #define BITS_PER_BYTE 8
253 * Define this if your operating system supports AF_UNIX family sockets.
255 #if !defined(__QNX__) && !defined(__BEOS__)
256 # define HAVE_UNIX_SOCKETS 1
260 * This is the default directory in which AF_UNIX socket files are placed.
261 * Caution: changing this risks breaking your existing client applications,
262 * which are likely to continue to look in the old directory. But if you
263 * just hate the idea of sockets in /tmp, here's where to twiddle it.
264 * You can also override this at runtime with the postmaster's -k switch.
266 #define DEFAULT_PGSOCKET_DIR "/tmp"
270 *------------------------------------------------------------------------
271 * These hand-configurable symbols are for enabling debugging code,
272 * not for controlling user-visible features or resource limits.
273 *------------------------------------------------------------------------
276 /* Define this to cause pfree()'d memory to be cleared immediately,
277 * to facilitate catching bugs that refer to already-freed values.
278 * XXX For 7.1 development, define this automatically if --enable-cassert.
279 * In the long term it probably doesn't need to be on by default.
281 #ifdef USE_ASSERT_CHECKING
282 #define CLOBBER_FREED_MEMORY
285 /* Define this to check memory allocation errors (scribbling on more
286 * bytes than were allocated).
287 * XXX For 7.1 development, define this automatically if --enable-cassert.
288 * In the long term it probably doesn't need to be on by default.
290 #ifdef USE_ASSERT_CHECKING
291 #define MEMORY_CONTEXT_CHECKING
294 /* Define this to force all parse and plan trees to be passed through
295 * copyObject(), to facilitate catching errors and omissions in copyObject().
297 /* #define COPY_PARSE_PLAN_TREES */
299 /* Enable debugging print statements in the date/time support routines. */
300 /* #define DATEDEBUG */
302 /* Enable debugging print statements for lock-related operations. */
303 /* #define LOCK_DEBUG */
306 * Other debug #defines (documentation, anyone?)
308 /* #define IPORTAL_DEBUG */
309 /* #define HEAPDEBUGALL */
310 /* #define ISTRATDEBUG */
311 /* #define ACLDEBUG */
312 /* #define RTDEBUG */
313 /* #define GISTDEBUG */
316 * defining unsafe floats will make float4 and float8 ops faster
317 * by suppressing overflow/underflow checks.
319 /* #define UNSAFE_FLOATS */
323 *------------------------------------------------------------------------
324 * Part 3: system configuration information that is auto-detected by
325 * configure. In theory you shouldn't have to touch any of this stuff
326 * by hand. In the real world, configure might get it wrong...
327 *------------------------------------------------------------------------
330 /* Define const as empty if your compiler doesn't grok const. */
333 /* Define as your compiler's spelling of "inline", or empty if no inline. */
336 /* Define as empty if the C compiler doesn't understand "signed". */
339 /* Define as empty if the C compiler doesn't understand "volatile". */
342 /* Define if your cpp understands the ANSI stringizing operators in macros */
343 #undef HAVE_STRINGIZE
345 /* Set to 1 if you have <crypt.h> */
348 /* Set to 1 if you have <dld.h> */
351 /* Set to 1 if you have <endian.h> */
354 /* Set to 1 if you have <fp_class.h> */
355 #undef HAVE_FP_CLASS_H
357 /* Set to 1 if you have <getopt.h> */
360 /* Set to 1 if you have <history.h> */
361 #undef HAVE_HISTORY_H
363 /* Set to 1 if you have <ieeefp.h> */
366 /* Set to 1 if you have <netinet/tcp.h> */
367 #undef HAVE_NETINET_TCP_H
369 /* Set to 1 if you have <readline.h> */
370 #undef HAVE_READLINE_H
372 /* Set to 1 if you have <readline/history.h> */
373 #undef HAVE_READLINE_HISTORY_H
375 /* Set to 1 if you have <readline/readline.h> */
376 #undef HAVE_READLINE_READLINE_H
378 /* Set to 1 if you have <sys/ipc.h> */
379 #undef HAVE_SYS_IPC_H
381 /* Set to 1 if you have <sys/select.h> */
382 #undef HAVE_SYS_SELECT_H
384 /* Set to 1 if you have <sys/un.h> */
387 /* Set to 1 if you have <sys/sem.h> */
388 #undef HAVE_SYS_SEM_H
390 /* Set to 1 if you have <sys/shm.h> */
391 #undef HAVE_SYS_SHM_H
393 /* Set to 1 if you have <kernel/OS.h> */
394 #undef HAVE_KERNEL_OS_H
396 /* Set to 1 if you have <SupportDefs.h> */
397 #undef HAVE_SUPPORTDEFS_H
399 /* Set to 1 if you have <kernel/image.h> */
400 #undef HAVE_KERNEL_IMAGE_H
402 /* Set to 1 if you have <termios.h> */
403 #undef HAVE_TERMIOS_H
405 /* Set to 1 if you have <sys/pstat.h> */
406 #undef HAVE_SYS_PSTAT_H
408 /* Define to 1 if you have strings.h */
409 #undef HAVE_STRINGS_H
411 /* Define if you have the setproctitle function. */
412 #undef HAVE_SETPROCTITLE
414 /* Define if you have the pstat function. */
417 /* Define if the PS_STRINGS thing exists. */
418 #undef HAVE_PS_STRINGS
420 /* Define if you have the stricmp function. */
423 /* Set to 1 if you have <pwd.h> */
426 /* Set to 1 if you have gettimeofday(a) instead of gettimeofday(a,b) */
427 #undef GETTIMEOFDAY_1ARG
428 #ifdef GETTIMEOFDAY_1ARG
429 # define gettimeofday(a,b) gettimeofday(a)
432 /* Set to 1 if you have snprintf() in the C library */
435 /* Set to 1 if your standard system headers declare snprintf() */
436 #undef HAVE_DECL_SNPRINTF
438 /* Set to 1 if you have vsnprintf() in the C library */
439 #undef HAVE_VSNPRINTF
441 /* Set to 1 if your standard system headers declare vsnprintf() */
442 #undef HAVE_DECL_VSNPRINTF
444 /* Set to 1 if you have strerror() */
447 /* Set to 1 if you have isinf() */
450 extern int isinf(double x);
454 * These are all related to port/isinf.c
458 #undef HAVE_FP_CLASS_H
459 #undef HAVE_FP_CLASS_D
462 /* Set to 1 if you have gethostname() */
463 #undef HAVE_GETHOSTNAME
464 #ifndef HAVE_GETHOSTNAME
465 extern int gethostname(char *name, int namelen);
468 /* Set to 1 if struct tm has a tm_zone member */
471 /* Set to 1 if you have int timezone.
472 * NOTE: if both tm_zone and a global timezone variable exist,
473 * using the tm_zone field should probably be preferred,
474 * since global variables are inherently not thread-safe.
476 #undef HAVE_INT_TIMEZONE
478 /* Set to 1 if you have cbrt() */
481 /* Set to 1 if you have inet_aton() */
482 #undef HAVE_INET_ATON
484 #ifndef HAVE_INET_ATON
485 # include <sys/types.h>
486 # include <netinet/in.h>
487 # include <arpa/inet.h>
488 extern int inet_aton(const char *cp, struct in_addr * addr);
491 /* Set to 1 if you have fcvt() */
494 /* Set to 1 if you have rint() */
497 /* Set to 1 if you have finite() */
500 /* Set to 1 if you have memmove() */
503 /* Set to 1 if you have sigsetjmp() */
504 #undef HAVE_SIGSETJMP
507 * When there is no sigsetjmp, its functionality is provided by plain
508 * setjmp. Incidentally, nothing provides setjmp's functionality in
511 #ifndef HAVE_SIGSETJMP
512 # define sigjmp_buf jmp_buf
513 # define sigsetjmp(x,y) setjmp(x)
514 # define siglongjmp longjmp
517 /* Set to 1 if you have sysconf() */
520 /* Set to 1 if you have getrusage() */
521 #undef HAVE_GETRUSAGE
523 /* Set to 1 if you have waitpid() */
526 /* Set to 1 if you have setsid() */
529 /* Set to 1 if you have sigprocmask() */
530 #undef HAVE_SIGPROCMASK
532 /* Set to 1 if you have sigprocmask() */
533 #undef HAVE_STRCASECMP
534 #ifndef HAVE_STRCASECMP
535 extern int strcasecmp(char *s1, char *s2);
538 /* Set to 1 if you have strtol() */
541 /* Set to 1 if you have strtoul() */
544 /* Set to 1 if you have strdup() */
547 extern char *strdup(char const *);
550 /* Set to 1 if you have random() */
553 extern long random(void);
556 /* Set to 1 if you have srandom() */
559 extern void srandom(unsigned int seed);
562 /* The random() function is expected to yield values 0 .. MAX_RANDOM_VALUE */
563 /* Currently, all known implementations yield 0..2^31-1, so we just hardwire
564 * this constant. We could do a configure test if it proves to be necessary.
565 * CAUTION: Think not to replace this with RAND_MAX. RAND_MAX defines the
566 * maximum value of the older rand() function, which is often different from
567 * --- and considerably inferior to --- random().
569 #define MAX_RANDOM_VALUE (0x7FFFFFFF)
571 /* Define if you have dlopen() */
574 /* Define if you have fdatasync() */
575 #undef HAVE_FDATASYNC
577 /* Define if the standard header unistd.h declares fdatasync() */
578 #undef HAVE_DECL_FDATASYNC
580 #if defined(HAVE_FDATASYNC) && !HAVE_DECL_FDATASYNC
581 extern int fdatasync(int fildes);
584 /* Set to 1 if you have libz.a */
587 /* Set to 1 if you have libreadline.a */
588 #undef HAVE_LIBREADLINE
590 /* Set to 1 if your libreadline defines rl_completion_append_character */
591 #undef HAVE_RL_COMPLETION_APPEND_CHARACTER
593 /* Set to 1 if you have rl_completion_matches */
594 #undef HAVE_RL_COMPLETION_MATCHES
596 /* Set to 1 if you have rl_filename_completion_function */
597 #undef HAVE_RL_FILENAME_COMPLETION_FUNCTION
599 /* Set to 1 if you have getopt_long() (GNU long options) */
600 #undef HAVE_GETOPT_LONG
602 /* Set to 1 if you have union semun */
603 #undef HAVE_UNION_SEMUN
605 /* Set to 1 if you have struct cmsgcred */
606 #undef HAVE_STRUCT_CMSGCRED
608 /* Set to 1 if you have struct fcred */
609 #undef HAVE_STRUCT_FCRED
611 /* Set to 1 if you have struct sockcred */
612 #undef HAVE_STRUCT_SOCKCRED
614 /* Set to 1 if you have struct sockaddr_un */
615 #undef HAVE_STRUCT_SOCKADDR_UN
617 /* Set to 1 if you have krb5_ticket.enc_part2 */
618 #undef HAVE_KRB5_TICKET_ENC_PART2
620 /* Set to 1 if you have krb5_ticket.client */
621 #undef HAVE_KRB5_TICKET_CLIENT
623 /* Set to 1 if you have krb5_error.text.data */
624 #undef HAVE_KRB5_ERROR_TEXT_DATA
626 /* Set to 1 if you have krb5_ticket.e_data */
627 #undef HAVE_KRB5_ERROR_E_DATA
629 /* Set to 1 if type "long int" works and is 64 bits */
630 #undef HAVE_LONG_INT_64
632 /* Set to 1 if type "long long int" works and is 64 bits */
633 #undef HAVE_LONG_LONG_INT_64
635 /* Set to 1 if type "long long int" constants should be suffixed by LL */
636 #undef HAVE_LL_CONSTANTS
638 /* Define this as the appropriate snprintf format for 64-bit ints, if any */
642 * We need a #define symbol for sizeof(Datum) for use in some #if tests.
647 * These must be defined as the alignment requirement (NOT the size) of
648 * each of the basic C data types (except char, which we assume has align 1).
649 * MAXIMUM_ALIGNOF is the largest alignment requirement for any C data type.
650 * ALIGNOF_LONG_LONG_INT need only be defined if HAVE_LONG_LONG_INT_64 is.
655 #undef ALIGNOF_LONG_LONG_INT
656 #undef ALIGNOF_DOUBLE
657 #undef MAXIMUM_ALIGNOF
659 /* Define as the type of the 3rd argument to accept() */
660 #undef ACCEPT_TYPE_ARG3
662 /* Define if POSIX signal interface is available */
663 #undef HAVE_POSIX_SIGNALS
665 /* Define if C++ compiler accepts "using namespace std" */
666 #undef HAVE_NAMESPACE_STD
668 /* Define if C++ compiler accepts "#include <string>" */
669 #undef HAVE_CXX_STRING_HEADER
671 /* Define if you have the optreset variable */
672 #undef HAVE_INT_OPTRESET
674 /* Define if you have strtoll() */
677 /* Define if you have strtoq() */
680 /* If strtoq() exists, rename it to the more standard strtoll() */
681 #if defined(HAVE_LONG_LONG_INT_64) && !defined(HAVE_STRTOLL) && defined(HAVE_STRTOQ)
682 # define strtoll strtoq
683 # define HAVE_STRTOLL 1
686 /* Define if you have strtoull() */
689 /* Define if you have strtouq() */
692 /* If strtouq() exists, rename it to the more standard strtoull() */
693 #if defined(HAVE_LONG_LONG_INT_64) && !defined(HAVE_STRTOULL) && defined(HAVE_STRTOUQ)
694 # define strtoull strtouq
695 # define HAVE_STRTOULL 1
698 /* Define if you have atexit() */
701 /* Define if you have on_exit() */
704 /* Define if the corresponding types are defined in standard headers */
709 #undef HAVE_SIG_ATOMIC_T
713 *------------------------------------------------------------------------
714 * Part 4: pull in system-specific declarations.
716 * This is still configure's responsibility, because it picks where
717 * the "pg_config_os.h" symlink points...
718 *------------------------------------------------------------------------
722 * Pull in OS-specific declarations (using link created by configure)
725 #include "pg_config_os.h"
728 * Provide default definitions for things that port-specific pg_config_os.h
729 * files can set, but typically don't.
733 #define DLLIMPORT /* no special DLL markers on most ports */
737 * The following is used as the arg list for signal handlers. Any ports
738 * that take something other than an int argument should override this in
739 * their pg_config_os.h file. Note that variable names are required
740 * because it is used in both the prototypes as well as the definitions.
741 * Note also the long name. We expect that this won't collide with
742 * other names causing compiler warnings.
746 #define SIGNAL_ARGS int postgres_signal_arg
750 #endif /* PG_CONFIG_H */