1 dnl Process this file with autoconf to produce a configure script.
2 dnl $PostgreSQL: pgsql/configure.in,v 1.412 2005/06/04 20:42:41 momjian Exp $
4 dnl Developers, please strive to achieve this order:
6 dnl 0. Initialization and options processing
12 dnl 6. Compiler characteristics
13 dnl 7. Functions, global variables
14 dnl 8. System services
16 dnl Read the Autoconf manual for details.
18 m4_pattern_forbid(^PGAC_)dnl to catch undefined macros
20 AC_INIT([PostgreSQL], [8.1devel], [pgsql-bugs@postgresql.org])
23 AC_COPYRIGHT([Copyright (c) 1996-2005, PostgreSQL Global Development Group])
24 AC_CONFIG_SRCDIR([src/backend/access/common/heaptuple.c])
25 AC_CONFIG_AUX_DIR(config)
26 AC_PREFIX_DEFAULT(/usr/local/pgsql)
27 AC_SUBST(configure_args, [$ac_configure_args])
29 AC_DEFINE_UNQUOTED(PG_VERSION, "$PACKAGE_VERSION", [PostgreSQL version])
34 AC_MSG_CHECKING([which template to use])
36 PGAC_ARG_REQ(with, template, [],
39 list) echo; ls "$srcdir/src/template"; exit;;
40 *) if test -f "$srcdir/src/template/$with_template" ; then
43 AC_MSG_ERROR(['$withval' is not a valid template name. Use 'list' for a list.])
48 # --with-template not given
52 beos*) template=beos ;;
53 bsdi*) template=bsdi ;;
54 cygwin*) template=cygwin ;;
55 darwin*) template=darwin ;;
56 dgux*) template=dgux ;;
57 freebsd*) template=freebsd ;;
58 hpux*) template=hpux ;;
59 irix*) template=irix ;;
60 linux*|gnu*|k*bsd*-gnu)
62 mingw*) template=win32 ;;
63 netbsd*) template=netbsd ;;
64 nextstep*) template=nextstep ;;
65 openbsd*) template=openbsd ;;
67 qnx*) template=qnx4 ;;
69 solaris*) template=solaris ;;
70 sunos*) template=sunos4 ;;
73 univel) template=univel ;;
75 sysv4*) template=svr4 ;;
76 sysv5*) template=unixware ;;
77 ultrix*) template=ultrix4 ;;
80 if test x"$template" = x"" ; then
82 *******************************************************************
83 PostgreSQL has apparently not been ported to your platform yet.
84 To try a manual configuration, look into the src/template directory
85 for a similar platform and use the '--with-template=' option.
87 Please also contact <pgsql-ports@postgresql.org> to see about
88 rectifying this. Include the above 'checking host system type...'
90 *******************************************************************
96 AC_MSG_RESULT([$template])
101 # Initialize default assumption that we do not need separate assembly code
102 # for TAS (test-and-set). This can be overridden by the template file
103 # when it's executed.
110 ## Command line options
114 # Installation directory for documentation
116 PGAC_ARG(with, docdir, [ --with-docdir=DIR install the documentation in DIR [[PREFIX/doc]]
117 --without-docdir do not install the documentation],
118 [AC_MSG_ERROR([option --with-docdir requires an argument])],
121 [docdir='${prefix}/doc'])
126 # Add non-standard directories to the include path
128 PGAC_ARG_REQ(with, includes, [ --with-includes=DIRS look for additional header files in DIRS])
132 # Add non-standard directories to the library search path
134 PGAC_ARG_REQ(with, libraries, [ --with-libraries=DIRS look for additional libraries in DIRS],
135 [LIBRARY_DIRS=$withval])
137 PGAC_ARG_REQ(with, libs, [ --with-libs=DIRS alternative spelling of --with-libraries],
138 [LIBRARY_DIRS=$withval])
142 # 64-bit integer date/time storage (--enable-integer-datetimes)
144 AC_MSG_CHECKING([whether to build with 64-bit integer date/time support])
145 PGAC_ARG_BOOL(enable, integer-datetimes, no, [ --enable-integer-datetimes enable 64-bit integer date/time support],
146 [AC_DEFINE([USE_INTEGER_DATETIMES], 1,
147 [Define to 1 if you want 64-bit integer timestamp and interval support. (--enable-integer-datetimes)])])
148 AC_MSG_RESULT([$enable_integer_datetimes])
154 AC_MSG_CHECKING([whether NLS is wanted])
155 PGAC_ARG_OPTARG(enable, nls,
156 [[ --enable-nls[=LANGUAGES] enable Native Language Support]],
158 [WANTED_LANGUAGES=$enableval],
159 [AC_DEFINE(ENABLE_NLS, 1,
160 [Define to 1 if you want National Language Support. (--enable-nls)])])
161 AC_MSG_RESULT([$enable_nls])
163 AC_SUBST(WANTED_LANGUAGES)
166 # Default port number (--with-pgport), default 5432
168 AC_MSG_CHECKING([for default port number])
169 PGAC_ARG_REQ(with, pgport, [ --with-pgport=PORTNUM change default port number [5432]],
170 [default_port=$withval],
172 AC_MSG_RESULT([$default_port])
173 # Need both of these because some places want an integer and some a string
174 AC_DEFINE_UNQUOTED(DEF_PGPORT, ${default_port},
175 [Define to the default TCP port number on which the server listens and
176 to which clients will try to connect. This can be overridden at run-time,
177 but it's convenient if your clients have the right default compiled in.
178 (--with-pgport=PORTNUM)])
179 AC_DEFINE_UNQUOTED(DEF_PGPORT_STR, "${default_port}",
180 [Define to the default TCP port number as a string constant.])
181 AC_SUBST(default_port)
184 # Option to disable shared libraries
186 PGAC_ARG_BOOL(enable, shared, yes,
187 [ --disable-shared do not build shared libraries])
188 AC_SUBST(enable_shared)
191 # '-rpath'-like feature can be disabled
193 PGAC_ARG_BOOL(enable, rpath, yes,
194 [ --disable-rpath do not embed shared library search path in executables])
195 AC_SUBST(enable_rpath)
200 PGAC_ARG_BOOL(enable, spinlocks, yes,
201 [ --disable-spinlocks do not use spinlocks])
204 # --enable-debug adds -g to compiler flags
206 PGAC_ARG_BOOL(enable, debug, no,
207 [ --enable-debug build with debugging symbols (-g)])
208 AC_SUBST(enable_debug)
214 # For historical reasons you can also use --with-CC to specify the C compiler
215 # to use, although the standard way to do this is to set the CC environment
217 PGAC_ARG_REQ(with, CC, [], [CC=$with_CC])
220 aix) pgac_cc_list="gcc xlc";;
221 irix) pgac_cc_list="cc";; # no gcc
222 *) pgac_cc_list="gcc cc";;
225 AC_PROG_CC([$pgac_cc_list])
232 . "$srcdir/src/template/$template" || exit
234 # CFLAGS are selected so:
235 # If the user specifies something in the environment, that is used.
236 # else: If the template file set something, that is used.
237 # else: If the compiler is GCC, then we use -O2.
238 # else: If the compiler is something else, then we use -0.
240 if test "$ac_env_CFLAGS_set" = set; then
241 CFLAGS=$ac_env_CFLAGS_value
242 elif test "${CFLAGS+set}" = set; then
243 : # (keep what template set)
244 elif test "$GCC" = yes; then
247 # if the user selected debug mode, don't use -O
248 if test "$enable_debug" != yes; then
253 if test "$GCC" = yes; then
254 CFLAGS="$CFLAGS -Wall -Wmissing-prototypes -Wpointer-arith"
256 # Some versions of GCC support some additional useful warning flags.
257 # Check whether they are supported, and add them to CFLAGS if so.
258 PGAC_PROG_CC_CFLAGS_OPT([-Wdeclaration-after-statement])
259 PGAC_PROG_CC_CFLAGS_OPT([-Wold-style-definition])
260 PGAC_PROG_CC_CFLAGS_OPT([-Wendif-labels])
262 # Disable strict-aliasing rules; needed for gcc 3.3+
263 PGAC_PROG_CC_CFLAGS_OPT([-fno-strict-aliasing])
266 # supply -g if --enable-debug
267 if test "$enable_debug" = yes && test "$ac_cv_prog_cc_g" = yes; then
271 AC_MSG_NOTICE([using CFLAGS=$CFLAGS])
273 # We already have this in Makefile.win32, but configure needs it too
274 if test "$PORTNAME" = "win32"; then
275 CPPFLAGS="$CPPFLAGS -I$srcdir/src/include/port/win32 -DEXEC_BACKEND"
278 # Check if the compiler still works with the template settings
279 AC_MSG_CHECKING([whether the C compiler still works])
280 AC_TRY_LINK([], [return 0;],
281 [AC_MSG_RESULT(yes)],
283 AC_MSG_ERROR([cannot proceed])])
285 # Defend against gcc -ffast-math
286 if test "$GCC" = yes; then
287 AC_TRY_COMPILE([], [@%:@ifdef __FAST_MATH__
289 @%:@endif], [], [AC_MSG_ERROR([do not put -ffast-math in CFLAGS])])
295 # Create compiler version string
296 if test x"$GCC" = x"yes" ; then
297 cc_string="GCC `${CC} --version | sed q`"
301 AC_DEFINE_UNQUOTED(PG_VERSION_STR,
302 ["PostgreSQL $PACKAGE_VERSION on $host, compiled by $cc_string"],
303 [A string containing the version number, platform, and C compiler])
307 # Set up TAS assembly code if needed; the template file has now had its
308 # chance to request this.
310 AC_CONFIG_LINKS([src/backend/port/tas.s:src/backend/port/tas/${tas_file}])
312 if test "$need_tas" = yes ; then
321 # Automatic dependency tracking
323 PGAC_ARG_BOOL(enable, depend, no, [ --enable-depend turn on automatic dependency tracking],
329 # Enable assert checks
331 PGAC_ARG_BOOL(enable, cassert, no, [ --enable-cassert enable assertion checks (for debugging)],
332 [AC_DEFINE([USE_ASSERT_CHECKING], 1,
333 [Define to 1 to build with assertion checks. (--enable-cassert)])])
337 # Include directories
340 IFS="${IFS}${PATH_SEPARATOR}"
341 # SRCH_INC comes from the template file
342 for dir in $with_includes $SRCH_INC; do
343 if test -d "$dir"; then
344 INCLUDES="$INCLUDES -I$dir"
346 AC_MSG_WARN([*** Include directory $dir does not exist.])
354 # Library directories
357 IFS="${IFS}${PATH_SEPARATOR}"
358 # LIBRARY_DIRS comes from command line, SRCH_LIB from template file.
359 for dir in $LIBRARY_DIRS $SRCH_LIB; do
360 if test -d "$dir"; then
361 LIBDIRS="$LIBDIRS -L$dir"
363 AC_MSG_WARN([*** Library directory $dir does not exist.])
369 # Enable thread-safe client libraries
371 AC_MSG_CHECKING([allow thread-safe client libraries])
372 PGAC_ARG_BOOL(enable, thread-safety, no, [ --enable-thread-safety make client libraries thread-safe])
373 PGAC_ARG_BOOL(enable, thread-safety-force, no, [ --enable-thread-safety-force force thread-safety in spite of thread test failure])
374 if test "$enable_thread_safety" = yes -o \
375 "$enable_thread_safety_force" = yes; then
376 enable_thread_safety="yes" # for 'force'
377 AC_DEFINE([ENABLE_THREAD_SAFETY], 1,
378 [Define to 1 to build client libraries as thread-safe code. (--enable-thread-safety)])
380 AC_MSG_RESULT([$enable_thread_safety])
381 AC_SUBST(enable_thread_safety)
384 # Optionally build Tcl modules (PL/Tcl)
386 AC_MSG_CHECKING([whether to build with Tcl])
387 PGAC_ARG_BOOL(with, tcl, no, [ --with-tcl build Tcl modules (PL/Tcl)])
388 AC_MSG_RESULT([$with_tcl])
391 # We see if the path to the Tcl/Tk configuration scripts is specified.
392 # This will override the use of tclsh to find the paths to search.
394 PGAC_ARG_REQ(with, tclconfig, [ --with-tclconfig=DIR tclConfig.sh is in DIR])
397 # Optionally build Perl modules (PL/Perl)
399 AC_MSG_CHECKING([whether to build Perl modules])
400 PGAC_ARG_BOOL(with, perl, no, [ --with-perl build Perl modules (PL/Perl)])
401 AC_MSG_RESULT([$with_perl])
405 # Optionally build Python modules (PL/Python)
407 AC_MSG_CHECKING([whether to build Python modules])
408 PGAC_ARG_BOOL(with, python, no, [ --with-python build Python modules (PL/Python)])
409 AC_MSG_RESULT([$with_python])
410 AC_SUBST(with_python)
415 AC_MSG_CHECKING([whether to build with Kerberos 4 support])
416 PGAC_ARG_BOOL(with, krb4, no, [ --with-krb4 build with Kerberos 4 support],
418 AC_DEFINE(KRB4, 1, [Define to build with Kerberos 4 support. (--with-krb4)])
419 krb_srvtab="/etc/srvtab"
421 AC_MSG_RESULT([$with_krb4])
428 AC_MSG_CHECKING([whether to build with Kerberos 5 support])
429 PGAC_ARG_BOOL(with, krb5, no, [ --with-krb5 build with Kerberos 5 support],
431 AC_DEFINE(KRB5, 1, [Define to build with Kerberos 5 support. (--with-krb5)])
432 krb_srvtab="FILE:\$(sysconfdir)/krb5.keytab"
434 AC_MSG_RESULT([$with_krb5])
438 # Using both Kerberos 4 and Kerberos 5 at the same time isn't going to work.
439 if test "$with_krb4" = yes && test "$with_krb5" = yes ; then
440 AC_MSG_ERROR([Kerberos 4 and Kerberos 5 support cannot be combined])
447 # Kerberos configuration parameters
449 PGAC_ARG_REQ(with, krb-srvnam,
450 [ --with-krb-srvnam=NAME name of the default service principal in Kerberos [[postgres]]],
452 [with_krb_srvnam="postgres"])
453 AC_DEFINE_UNQUOTED([PG_KRB_SRVNAM], ["$with_krb_srvnam"],
454 [Define to the name of the default PostgreSQL service principal in Kerberos. (--with-krb-srvnam=NAME)])
460 AC_MSG_CHECKING([whether to build with PAM support])
461 PGAC_ARG_BOOL(with, pam, no,
462 [ --with-pam build with PAM support],
463 [AC_DEFINE([USE_PAM], 1, [Define to 1 to build with PAM support. (--with-pam)])])
464 AC_MSG_RESULT([$with_pam])
471 AC_MSG_CHECKING([whether to build with Bonjour support])
472 PGAC_ARG_BOOL(with, bonjour, no,
473 [ --with-bonjour build with Bonjour support],
474 [AC_DEFINE([USE_BONJOUR], 1, [Define to 1 to build with Bonjour support. (--with-bonjour)])])
475 AC_MSG_RESULT([$with_bonjour])
476 AC_SUBST(with_bonjour)
482 AC_MSG_CHECKING([whether to build with OpenSSL support])
483 PGAC_ARG_BOOL(with, openssl, no, [ --with-openssl build with OpenSSL support],
484 [AC_DEFINE([USE_SSL], 1, [Define to build with (Open)SSL support. (--with-openssl)])])
485 AC_MSG_RESULT([$with_openssl])
486 AC_SUBST(with_openssl)
492 PGAC_ARG_BOOL(with, readline, yes,
493 [ --without-readline do not use Readline])
494 # readline on MinGW has problems with backslashes in psql and other bugs.
495 # This is particularly a problem with non-US code pages.
496 # Therefore disable its use until we understand the cause. 2004-07-20
497 if test "$PORTNAME" = "win32"; then
498 if test "$with_readline" = yes; then
499 AC_MSG_WARN([*** Readline does not work on MinGW --- disabling])
508 PGAC_ARG_BOOL(with, zlib, yes,
509 [ --without-zlib do not use Zlib])
515 # Assume system is ELF if it predefines __ELF__ as 1,
516 # otherwise believe host_os based default.
518 freebsd1*|freebsd2*) elf=no;;
519 freebsd3*|freebsd4*) elf=yes;;
528 [if test "X$elf" = "Xyes" ; then
539 CPPFLAGS="$CPPFLAGS $INCLUDES"
540 LDFLAGS="$LDFLAGS $LIBDIRS"
542 AC_MSG_NOTICE([using CPPFLAGS=$CPPFLAGS])
543 AC_MSG_NOTICE([using LDFLAGS=$LDFLAGS])
545 AC_ARG_VAR(LDFLAGS_SL)
552 AC_SUBST(with_gnu_ld)
553 case $host_os in sysv5*)
554 AC_CACHE_CHECK([whether ld -R works], [pgac_cv_prog_ld_R],
556 pgac_save_LDFLAGS=$LDFLAGS; LDFLAGS="$LDFLAGS -Wl,-R/usr/lib"
557 AC_TRY_LINK([], [], [pgac_cv_prog_ld_R=yes], [pgac_cv_prog_ld_R=no])
558 LDFLAGS=$pgac_save_LDFLAGS
560 ld_R_works=$pgac_cv_prog_ld_R
564 AC_CHECK_PROGS(LORDER, lorder)
565 AC_PATH_PROG(TAR, tar)
568 AC_CHECK_PROGS(YACC, ['bison -y'])
570 if test "$YACC"; then
571 if $YACC --version | sed q | $AWK '{ if ($4 < 1.875) exit 0; else exit 1;}'; then
573 *** If you are going to modify the grammar files or build from CVS, the installed
574 *** version of Bison is too old. Bison version 1.875 or later is required.])
578 if test -z "$YACC"; then
580 *** Without Bison you will not be able to build PostgreSQL from CVS or
581 *** change any of the parser definition files. You can obtain Bison from
582 *** a GNU mirror site. (If you are using the official distribution of
583 *** PostgreSQL then you do not need to worry about this because the Bison
584 *** output is pre-generated.) To use a different yacc program (possible,
585 *** but not recommended), set the environment variable YACC before running
591 if test "$with_perl" = yes; then
592 PGAC_CHECK_PERL_CONFIGS([archlibexp,privlibexp,useshrplib])
593 PGAC_CHECK_PERL_EMBED_LDFLAGS
596 if test "$with_python" = yes; then
598 PGAC_CHECK_PYTHON_EMBED_SETUP
606 if test "$PORTNAME" != "aix" -a "$PORTNAME" != "alpha"
608 AC_CHECK_LIB(bsd, main)
610 AC_CHECK_LIB(util, setproctitle)
611 AC_CHECK_LIB(m, main)
612 AC_CHECK_LIB(dl, main)
613 AC_CHECK_LIB(nsl, main)
614 AC_CHECK_LIB(socket, main)
615 AC_CHECK_LIB(ipc, main)
616 AC_CHECK_LIB(IPC, main)
617 AC_CHECK_LIB(lc, main)
618 AC_CHECK_LIB(dld, main)
619 AC_CHECK_LIB(ld, main)
620 AC_CHECK_LIB(compat, main)
621 AC_CHECK_LIB(BSD, main)
622 AC_CHECK_LIB(gen, main)
623 AC_CHECK_LIB(PW, main)
624 AC_CHECK_LIB(resolv, main)
625 AC_SEARCH_LIBS(getopt_long, [getopt gnugetopt])
627 AC_CHECK_LIB(unix, main)
628 AC_SEARCH_LIBS(crypt, crypt)
630 if test "$PORTNAME" = "beos"
632 AC_CHECK_LIB(bind, __inet_ntoa)
635 AC_SEARCH_LIBS(fdatasync, [rt posix4])
637 AC_CHECK_LIB(cygipc, shmget)
639 if test "$PORTNAME" = "win32"
641 AC_CHECK_LIB(wsock32, main)
644 if test "$with_readline" = yes; then
646 if test x"$pgac_cv_check_readline" = x"no"; then
647 AC_MSG_ERROR([readline library not found
648 If you have readline already installed, see config.log for details on the
649 failure. It is possible the compiler isn't looking in the proper directory.
650 Use --without-readline to disable readline support.])
654 if test "$with_zlib" = yes; then
655 AC_CHECK_LIB(z, inflate, [],
656 [AC_MSG_ERROR([zlib library not found
657 If you have zlib already installed, see config.log for details on the
658 failure. It is possible the compiler isn't looking in the proper directory.
659 Use --without-zlib to disable zlib support.])])
662 if test "$enable_spinlocks" = yes; then
663 AC_DEFINE(HAVE_SPINLOCKS, 1, [Define to 1 if you have spinlocks.])
666 *** Not using spinlocks will cause poor performance.])
669 if test "$with_krb4" = yes ; then
670 AC_CHECK_LIB(des, des_encrypt, [], [AC_MSG_ERROR([library 'des' is required for Kerberos 4])])
671 AC_CHECK_LIB(krb, krb_sendauth, [], [AC_MSG_ERROR([library 'krb' is required for Kerberos 4])])
672 AC_REPLACE_FUNCS([gethostname])
675 if test "$with_krb5" = yes ; then
676 if test "$PORTNAME" != "win32"; then
677 AC_SEARCH_LIBS(com_err, [krb5 'krb5 -ldes -lasn1 -lroken' com_err], [],
678 [AC_MSG_ERROR([could not find function 'com_err' required for Kerberos 5])])
679 AC_SEARCH_LIBS(krb5_encrypt, [krb5 'krb5 -ldes -lasn1 -lroken' crypto k5crypto], [],
680 [AC_MSG_ERROR([could not find function 'krb5_encrypt' required for Kerberos 5])])
681 AC_SEARCH_LIBS(krb5_sendauth, [krb5 'krb5 -ldes -lasn1 -lroken'], [],
682 [AC_MSG_ERROR([could not find function 'krb5_sendauth' required for Kerberos 5])])
684 AC_SEARCH_LIBS(com_err, 'comerr32 -lkrb5_32', [],
685 [AC_MSG_ERROR([could not find function 'com_err' required for Kerberos 5])])
689 if test "$with_openssl" = yes ; then
691 if test "$PORTNAME" != "win32"; then
692 AC_CHECK_LIB(crypto, CRYPTO_new_ex_data, [], [AC_MSG_ERROR([library 'crypto' is required for OpenSSL])])
693 AC_CHECK_LIB(ssl, SSL_library_init, [], [AC_MSG_ERROR([library 'ssl' is required for OpenSSL])])
695 AC_CHECK_LIB(eay32, CRYPTO_new_ex_data, [], [AC_MSG_ERROR([library 'eay32' is required for OpenSSL])])
696 AC_CHECK_LIB(ssleay32, SSL_library_init, [], [AC_MSG_ERROR([library 'ssleay32' is required for OpenSSL])])
700 if test "$with_pam" = yes ; then
701 AC_CHECK_LIB(pam, pam_start, [], [AC_MSG_ERROR([library 'pam' is required for PAM])])
709 dnl sys/socket.h is required by AC_FUNC_ACCEPT_ARGTYPES
710 AC_CHECK_HEADERS([crypt.h dld.h endian.h fp_class.h getopt.h ieeefp.h langinfo.h poll.h pwd.h sys/ipc.h sys/poll.h sys/pstat.h sys/select.h sys/sem.h sys/socket.h sys/shm.h sys/time.h sys/un.h termios.h utime.h wchar.h wctype.h kernel/OS.h kernel/image.h SupportDefs.h])
712 # At least on IRIX, cpp test for netinet/tcp.h will fail unless
713 # netinet/in.h is included first.
714 AC_CHECK_HEADERS(netinet/in.h)
715 AC_CHECK_HEADERS(netinet/tcp.h, [], [],
717 #ifdef HAVE_NETINET_IN_H
718 #include <netinet/in.h>
722 if expr x"$pgac_cv_check_readline" : 'x-lreadline' >/dev/null ; then
723 AC_CHECK_HEADERS(readline/readline.h, [],
724 [AC_CHECK_HEADERS(readline.h, [],
725 [AC_MSG_ERROR([readline header not found
726 If you have readline already installed, see config.log for details on the
727 failure. It is possible the compiler isn't looking in the proper directory.
728 Use --without-readline to disable readline support.])])])
729 AC_CHECK_HEADERS(readline/history.h, [],
730 [AC_CHECK_HEADERS(history.h, [],
731 [AC_MSG_ERROR([history header not found
732 If you have readline already installed, see config.log for details on the
733 failure. It is possible the compiler isn't looking in the proper directory.
734 Use --without-readline to disable readline support.])])])
737 if expr x"$pgac_cv_check_readline" : 'x-ledit' >/dev/null ; then
738 # Some installations of libedit usurp /usr/include/readline/, which seems
739 # bad practice, since in combined installations readline will have its headers
740 # there. We might have to resort to AC_EGREP checks to make sure we found
741 # the proper header...
742 AC_CHECK_HEADERS(editline/readline.h, [],
743 [AC_CHECK_HEADERS(readline.h, [],
744 [AC_CHECK_HEADERS(readline/readline.h, [],
745 [AC_MSG_ERROR([readline header not found
746 If you have libedit already installed, see config.log for details on the
747 failure. It is possible the compiler isn't looking in the proper directory.
748 Use --without-readline to disable libedit support.])])])])
749 AC_CHECK_HEADERS(editline/history.h, [],
750 [AC_CHECK_HEADERS(history.h, [],
751 [AC_CHECK_HEADERS(readline/history.h, [],
752 [AC_MSG_ERROR([history header not found
753 If you have libedit already installed, see config.log for details on the
754 failure. It is possible the compiler isn't looking in the proper directory.
755 Use --without-readline to disable libedit support.])])])])
758 if test "$with_zlib" = yes; then
759 AC_CHECK_HEADER(zlib.h, [], [AC_MSG_ERROR([zlib header not found
760 If you have zlib already installed, see config.log for details on the
761 failure. It is possible the compiler isn't looking in the proper directory.
762 Use --without-zlib to disable zlib support.])])
765 if test "$with_krb4" = yes ; then
766 AC_CHECK_HEADER(krb.h, [], [AC_MSG_ERROR([header file <krb.h> is required for Kerberos 4])])
769 if test "$with_krb5" = yes ; then
770 AC_CHECK_HEADER(krb5.h, [], [AC_MSG_ERROR([header file <krb5.h> is required for Kerberos 5])])
773 if test "$with_openssl" = yes ; then
774 AC_CHECK_HEADER(openssl/ssl.h, [], [AC_MSG_ERROR([header file <openssl/ssl.h> is required for OpenSSL])])
775 AC_CHECK_HEADER(openssl/err.h, [], [AC_MSG_ERROR([header file <openssl/err.h> is required for OpenSSL])])
778 if test "$with_pam" = yes ; then
779 AC_CHECK_HEADERS(security/pam_appl.h, [],
780 [AC_CHECK_HEADERS(pam/pam_appl.h, [],
781 [AC_MSG_ERROR([header file <security/pam_appl.h> or <pam/pam_appl.h> is required for PAM.])])])
784 if test "$with_bonjour" = yes ; then
785 AC_CHECK_HEADER(DNSServiceDiscovery/DNSServiceDiscovery.h, [], [AC_MSG_ERROR([header file <DNSServiceDiscovery/DNSServiceDiscovery.h> is required for Bonjour])])
790 ## Types, structures, compiler characteristics
793 m4_defun([AC_PROG_CC_STDC], []) dnl We don't want that.
799 PGAC_C_FUNCNAME_SUPPORT
802 PGAC_STRUCT_SOCKADDR_UN
803 PGAC_STRUCT_SOCKADDR_STORAGE
804 PGAC_STRUCT_SOCKADDR_STORAGE_MEMBERS
807 AC_CHECK_TYPES([struct cmsgcred, struct fcred, struct sockcred], [], [],
808 [#include <sys/param.h>
809 #include <sys/types.h>
810 #include <sys/socket.h>
811 #include <sys/ucred.h>])
813 AC_CHECK_TYPES([struct option], [], [],
814 [#ifdef HAVE_GETOPT_H
818 if test "$with_zlib" = yes; then
819 # Check that <zlib.h> defines z_streamp (versions before about 1.0.4
820 # did not). While we could work around the lack of z_streamp, it
821 # seems unwise to encourage people to use such old zlib versions...
822 AC_CHECK_TYPE(z_streamp, [], [AC_MSG_ERROR([zlib version is too old
823 Use --without-zlib to disable zlib support.])],
827 if test "$with_krb5" = yes; then
828 # Check for differences between MIT and Heimdal (KTH) releases
829 AC_CHECK_MEMBERS(krb5_ticket.enc_part2, [],
830 [AC_CHECK_MEMBERS(krb5_ticket.client, [],
831 [AC_MSG_ERROR([could not determine how to get client name from Kerberos 5 ticket])],
832 [#include <krb5.h>])],
834 AC_CHECK_MEMBERS(krb5_error.text.data, [],
835 [AC_CHECK_MEMBERS(krb5_error.e_data, [],
836 [AC_MSG_ERROR([could not determine how to extract Kerberos 5 error messages])],
837 [#include <krb5.h>])],
842 ## Functions, global variables
845 PGAC_VAR_INT_TIMEZONE
846 AC_FUNC_ACCEPT_ARGTYPES
847 PGAC_FUNC_GETTIMEOFDAY_1ARG
849 AC_CHECK_FUNCS([cbrt dlopen fcvt fdatasync getpeereid memmove poll pstat readlink setproctitle setsid sigprocmask symlink sysconf towlower utime utimes waitpid wcstombs])
851 AC_CHECK_DECLS(fdatasync, [], [], [#include <unistd.h>])
854 AC_CHECK_TYPE([struct sockaddr_in6],
855 [AC_CHECK_FUNC(inet_ntop,
856 [AC_DEFINE(HAVE_IPV6, 1, [Define to 1 if you have support for IPv6.])
859 [$ac_includes_default
860 #include <netinet/in.h>])
863 AC_CACHE_CHECK([for PS_STRINGS], [pgac_cv_var_PS_STRINGS],
865 [#include <machine/vmparam.h>
866 #include <sys/exec.h>
868 [PS_STRINGS->ps_nargvstr = 1;
869 PS_STRINGS->ps_argvstr = "foo";],
870 [pgac_cv_var_PS_STRINGS=yes],
871 [pgac_cv_var_PS_STRINGS=no])])
872 if test "$pgac_cv_var_PS_STRINGS" = yes ; then
873 AC_DEFINE([HAVE_PS_STRINGS], [], [Define to 1 if the PS_STRINGS thing exists.])
877 # We use our snprintf.c emulation if either snprintf() or vsnprintf()
878 # is missing. Yes, there are machines that have only one. We may
879 # also decide to use snprintf.c if snprintf() is present but does not
880 # have all the features we need --- see below.
882 pgac_need_repl_snprintf=no
883 AC_CHECK_FUNCS(snprintf, [], pgac_need_repl_snprintf=yes)
884 AC_CHECK_FUNCS(vsnprintf, [], pgac_need_repl_snprintf=yes)
887 # Check whether <stdio.h> declares snprintf() and vsnprintf(); if not,
888 # include/c.h will provide declarations. Note this is a separate test
889 # from whether the functions exist in the C library --- there are
890 # systems that have the functions but don't bother to declare them :-(
892 AC_CHECK_DECLS([snprintf, vsnprintf])
895 # do this one the hard way in case isinf() is a macro
896 AC_CACHE_CHECK([for isinf], ac_cv_func_isinf,
900 [double x = 0.0; int res = isinf(x);],
901 [ac_cv_func_isinf=yes],
902 [ac_cv_func_isinf=no])])
904 if test $ac_cv_func_isinf = yes ; then
905 AC_DEFINE(HAVE_ISINF, 1, [Define to 1 if you have isinf().])
908 # Look for a way to implement a substitute for isinf()
909 AC_CHECK_FUNCS([fpclass fp_class fp_class_d class], [break])
912 AC_REPLACE_FUNCS([crypt fseeko getopt getrusage inet_aton random rint srandom strdup strerror strtol strtoul unsetenv])
914 # system's version of getaddrinfo(), if any, may be used only if we found
915 # a definition for struct addrinfo; see notes in src/include/getaddrinfo.h
916 if test x"$ac_cv_type_struct_addrinfo" = xyes ; then
917 AC_REPLACE_FUNCS([getaddrinfo])
919 AC_LIBOBJ(getaddrinfo)
922 # similarly, use system's getopt_long() only if system provides struct option.
923 if test x"$ac_cv_type_struct_option" = xyes ; then
924 AC_REPLACE_FUNCS([getopt_long])
926 AC_LIBOBJ(getopt_long)
929 # BSD/OS & NetBSD use a custom fseeko/ftello built on fsetpos/fgetpos
930 # We override the previous test that said fseeko/ftello didn't exist
931 # OS tests are also done in include/c.h and port/fseeko.c
932 case $host_os in bsdi*|netbsd*)
933 ac_cv_func_fseeko=yes
936 # Solaris has a very slow qsort in certain cases, so we replace it.
937 if test "$PORTNAME" = "solaris"; then
942 if test "$PORTNAME" = "win32"; then
944 AC_LIBOBJ(gettimeofday)
948 AC_DEFINE([HAVE_SYMLINK], 1,
949 [Define to 1 if you have the `symlink' function.])
952 if test "$with_readline" = yes; then
953 PGAC_VAR_RL_COMPLETION_APPEND_CHARACTER
954 AC_CHECK_FUNCS([rl_completion_matches rl_filename_completion_function])
955 AC_CHECK_FUNCS([replace_history_entry])
959 dnl Cannot use AC_CHECK_FUNC because finite may be a macro
960 AC_MSG_CHECKING(for finite)
961 AC_TRY_LINK([#include <math.h>],
962 [int dummy=finite(1.0);],
963 [AC_DEFINE(HAVE_FINITE, 1, [Define to 1 if you have finite().])
967 dnl Cannot use AC_CHECK_FUNC because sigsetjmp may be a macro
968 dnl (especially on GNU libc)
969 dnl See also comments in c.h.
970 AC_MSG_CHECKING(for sigsetjmp)
971 AC_TRY_LINK([#include <setjmp.h>],
972 [sigjmp_buf x; sigsetjmp(x, 1);],
973 [AC_DEFINE(HAVE_SIGSETJMP, 1, [Define to 1 if you have sigsetjmp().])
977 AC_CHECK_FUNC(syslog,
978 [AC_CHECK_HEADER(syslog.h,
979 [AC_DEFINE(HAVE_SYSLOG, 1, [Define to 1 if you have the syslog interface.])])])
981 AC_CACHE_CHECK([for optreset], pgac_cv_var_int_optreset,
982 [AC_TRY_LINK([#include <unistd.h>],
983 [extern int optreset; optreset = 1;],
984 [pgac_cv_var_int_optreset=yes],
985 [pgac_cv_var_int_optreset=no])])
986 if test x"$pgac_cv_var_int_optreset" = x"yes"; then
987 AC_DEFINE(HAVE_INT_OPTRESET, 1, [Define to 1 if you have the global variable 'int optreset'.])
990 AC_CHECK_FUNCS([strtoll strtoq], [break])
991 AC_CHECK_FUNCS([strtoull strtouq], [break])
993 # Check for one of atexit() or on_exit()
994 AC_CHECK_FUNCS(atexit, [],
995 [AC_CHECK_FUNCS(on_exit, [],
996 [AC_MSG_ERROR([neither atexit() nor on_exit() found])])])
1003 # For each platform, we need to know about any special compile and link
1004 # libraries, and whether the normal C function names are thread-safe.
1005 # See the comment at the top of src/port/thread.c for more information.
1007 if test "$enable_thread_safety" = yes; then
1008 ACX_PTHREAD # set thread flags
1010 # Some platforms use these, so just defineed them. They can't hurt if they
1011 # are not supported.
1012 PTHREAD_CFLAGS="$PTHREAD_CFLAGS -D_REENTRANT -D_THREAD_SAFE -D_POSIX_PTHREAD_SEMANTICS"
1015 # At this point, we don't want to muck with the compiler name for threading.
1016 # Let's see who fails, perhaps AIX. 2004-04-23
1017 if test "$PTHREAD_CC" != "$CC"; then
1019 PostgreSQL does not support platforms that require a special
1020 compiler binary for thread-safety.
1024 if test "$THREAD_SUPPORT" = no; then
1026 Cannot enable threads on your platform.
1027 Your platform is known to not support thread-safe programs.
1028 For details, compile and run src/bin/pg_thread_test.
1032 # Check for *_r functions
1035 CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
1036 LIBS="$LIBS $PTHREAD_LIBS"
1038 AC_CHECK_HEADER(pthread.h, [], [AC_MSG_ERROR([pthread.h not found, required for --enable-thread-safety])])
1040 AC_CHECK_FUNCS([strerror_r getpwuid_r gethostbyname_r])
1042 # Do test here with the proper thread flags
1043 PGAC_FUNC_GETPWUID_R_5ARG
1044 PGAC_FUNC_STRERROR_R_INT
1050 # do not use values from template file
1055 AC_SUBST(PTHREAD_CFLAGS)
1056 AC_SUBST(PTHREAD_LIBS)
1059 # This test makes sure that run tests work at all. Sometimes a shared
1060 # library is found by the linker, but the runtime linker can't find it.
1061 # This check should come after all modifications of compiler or linker
1062 # variables, and before any other run tests.
1063 AC_MSG_CHECKING([test program])
1064 AC_TRY_RUN([int main() { return 0; }],
1065 [AC_MSG_RESULT(ok)],
1066 [AC_MSG_RESULT(failed)
1068 *** Could not execute a simple test program. This may be a problem
1069 *** related to locating shared libraries. Check the file 'config.log'
1070 *** for the exact reason.]])],
1071 [AC_MSG_RESULT([cross-compiling])])
1074 # Force use of our snprintf if system's doesn't do arg control
1075 # This feature is used by NLS
1076 if test "$enable_nls" = yes &&
1077 test $pgac_need_repl_snprintf = no &&
1078 # On Win32, libintl replaces snprintf() with its own version that
1079 # understands arg control, so we don't need our own. In fact, it
1080 # also uses macros that conflict with ours, so we _can't_ use
1082 test "$PORTNAME" != "win32"; then
1083 PGAC_FUNC_PRINTF_ARG_CONTROL
1084 if test $pgac_cv_printf_arg_control != yes ; then
1085 pgac_need_repl_snprintf=yes
1090 dnl Check to see if we have a working 64-bit integer type.
1091 dnl This breaks down into two steps:
1092 dnl (1) figure out if the compiler has a 64-bit int type with working
1093 dnl arithmetic, and if so
1094 dnl (2) see whether snprintf() can format the type correctly. (Currently,
1095 dnl snprintf is the only library routine we really need for int8 support.)
1096 dnl It's entirely possible to have a compiler that handles a 64-bit type
1097 dnl when the C library doesn't; this is fairly likely when using gcc on
1098 dnl an older platform, for example.
1099 dnl If there is no native snprintf() or it does not handle the 64-bit type,
1100 dnl we force our own version of snprintf() to be used instead.
1101 dnl Note this test must be run after our initial check for snprintf/vsnprintf.
1103 PGAC_TYPE_64BIT_INT([long int])
1105 if test x"$HAVE_LONG_INT_64" = x"no" ; then
1106 PGAC_TYPE_64BIT_INT([long long int])
1110 dnl If we need to use "long long int", figure out whether nnnLL notation works.
1112 if test x"$HAVE_LONG_LONG_INT_64" = xyes ; then
1114 #define INT64CONST(x) x##LL
1115 long long int foo = INT64CONST(0x1234567890123456);
1118 [AC_DEFINE(HAVE_LL_CONSTANTS, 1, [Define to 1 if constants of type 'long long int' should have the suffix LL.])],
1123 # If we found "long int" is 64 bits, assume snprintf handles it. If
1124 # we found we need to use "long long int", better check. We cope with
1125 # snprintfs that use %lld, %qd, or %I64d as the format. If none of these
1126 # work, fall back to our own snprintf emulation (which we know uses %lld).
1128 if test "$HAVE_LONG_LONG_INT_64" = yes ; then
1129 if test $pgac_need_repl_snprintf = no; then
1130 PGAC_FUNC_SNPRINTF_LONG_LONG_INT_FORMAT
1131 if test "$LONG_LONG_INT_FORMAT" = ""; then
1132 # Force usage of our own snprintf, since system snprintf is broken
1133 pgac_need_repl_snprintf=yes
1134 LONG_LONG_INT_FORMAT='%lld'
1137 # Here if we previously decided we needed to use our own snprintf
1138 LONG_LONG_INT_FORMAT='%lld'
1140 LONG_LONG_UINT_FORMAT=`echo "$LONG_LONG_INT_FORMAT" | sed 's/d$/u/'`
1141 INT64_FORMAT="\"$LONG_LONG_INT_FORMAT\""
1142 UINT64_FORMAT="\"$LONG_LONG_UINT_FORMAT\""
1144 # Here if we are not using 'long long int' at all
1145 INT64_FORMAT='"%ld"'
1146 UINT64_FORMAT='"%lu"'
1149 AC_DEFINE_UNQUOTED(INT64_FORMAT, $INT64_FORMAT,
1150 [Define to the appropriate snprintf format for 64-bit ints, if any.])
1152 AC_DEFINE_UNQUOTED(UINT64_FORMAT, $UINT64_FORMAT,
1153 [Define to the appropriate snprintf format for unsigned 64-bit ints, if any.])
1155 # Now we have checked all the reasons to replace snprintf
1156 if test $pgac_need_repl_snprintf = yes; then
1157 AC_DEFINE(USE_SNPRINTF, 1, [Use replacement snprintf() functions.])
1161 # Need a #define for the size of Datum (unsigned long)
1162 AC_CHECK_SIZEOF([unsigned long])
1164 # Determine memory alignment requirements for the basic C data types.
1166 PGAC_CHECK_ALIGNOF(short)
1167 PGAC_CHECK_ALIGNOF(int)
1168 PGAC_CHECK_ALIGNOF(long)
1169 if test x"$HAVE_LONG_LONG_INT_64" = x"yes" ; then
1170 PGAC_CHECK_ALIGNOF(long long int)
1172 PGAC_CHECK_ALIGNOF(double)
1174 # Compute maximum alignment of any basic type.
1175 # We assume long's alignment is at least as strong as char, short, or int;
1176 # but we must check long long (if it exists) and double.
1178 MAX_ALIGNOF=$pgac_cv_alignof_long
1179 if test $MAX_ALIGNOF -lt $pgac_cv_alignof_double ; then
1180 MAX_ALIGNOF=$pgac_cv_alignof_double
1182 if test x"$HAVE_LONG_LONG_INT_64" = xyes && test $MAX_ALIGNOF -lt $pgac_cv_alignof_long_long_int ; then
1183 MAX_ALIGNOF="$pgac_cv_alignof_long_long_int"
1185 AC_DEFINE_UNQUOTED(MAXIMUM_ALIGNOF, $MAX_ALIGNOF, [Define as the maximum alignment requirement of any C data type.])
1188 # Some platforms predefine the types int8, int16, etc. Only check
1189 # a (hopefully) representative subset.
1190 AC_CHECK_TYPES([int8, uint8, int64, uint64], [], [],
1192 #ifdef HAVE_SUPPORTDEFS_H
1193 #include <SupportDefs.h>
1196 # We also check for sig_atomic_t, which *should* be defined per ANSI
1197 # C, but is missing on some old platforms.
1198 AC_CHECK_TYPES(sig_atomic_t, [], [], [#include <signal.h>])
1201 PGAC_FUNC_POSIX_SIGNALS
1202 if test "$pgac_cv_func_posix_signals" != yes -a "$enable_thread_safety" = yes; then
1204 *** Thread-safety requires POSIX signals, which are not supported by your
1205 *** operating system.
1209 if test $ac_cv_func_fseeko = yes; then
1213 # SunOS doesn't handle negative byte comparisons properly with +/- return
1217 # Select semaphore implementation type.
1218 if test x"$USE_NAMED_POSIX_SEMAPHORES" = x"1" ; then
1219 AC_DEFINE(USE_NAMED_POSIX_SEMAPHORES, 1, [Define to select named POSIX semaphores.])
1220 SEMA_IMPLEMENTATION="src/backend/port/posix_sema.c"
1222 if test x"$USE_UNNAMED_POSIX_SEMAPHORES" = x"1" ; then
1223 AC_DEFINE(USE_UNNAMED_POSIX_SEMAPHORES, 1, [Define to select unnamed POSIX semaphores.])
1224 SEMA_IMPLEMENTATION="src/backend/port/posix_sema.c"
1226 AC_DEFINE(USE_SYSV_SEMAPHORES, 1, [Define to select SysV-style semaphores.])
1227 SEMA_IMPLEMENTATION="src/backend/port/sysv_sema.c"
1232 # Select shared-memory implementation type.
1233 AC_DEFINE(USE_SYSV_SHARED_MEMORY, 1, [Define to select SysV-style shared memory.])
1234 SHMEM_IMPLEMENTATION="src/backend/port/sysv_shmem.c"
1237 if test "$enable_nls" = yes ; then
1241 # Check for Tcl configuration script tclConfig.sh
1242 if test "$with_tcl" = yes; then
1243 PGAC_PATH_TCLCONFIGSH([$with_tclconfig])
1244 PGAC_EVAL_TCLCONFIGSH([$TCL_CONFIG_SH],
1245 [TCL_INCLUDE_SPEC,TCL_LIB_FILE,TCL_LIBS,TCL_LIB_SPEC,TCL_SHARED_BUILD])
1246 AC_SUBST(TCL_SHLIB_LD_LIBS)dnl don't want to double-evaluate that one
1247 # now that we have TCL_INCLUDE_SPEC, we can check for <tcl.h>
1248 ac_save_CPPFLAGS=$CPPFLAGS
1249 CPPFLAGS="$TCL_INCLUDE_SPEC $CPPFLAGS"
1250 AC_CHECK_HEADER(tcl.h, [], [AC_MSG_ERROR([header file <tcl.h> is required for Tcl])])
1251 CPPFLAGS=$ac_save_CPPFLAGS
1255 # Check for DocBook and tools
1259 PGAC_CHECK_DOCBOOK(4.2)
1260 PGAC_PATH_DOCBOOK_STYLESHEETS
1261 PGAC_PATH_COLLATEINDEX
1262 AC_CHECK_PROGS(SGMLSPL, sgmlspl)
1266 # We have to run the thread test near the end so we have all our symbols
1267 # defined. Cross compiling throws a warning.
1269 if test "$enable_thread_safety_force" = yes; then
1271 *** Skipping thread test program. --enable-thread-safety-force was used.
1272 *** Run the program in src/tools/thread on the your machine and add
1273 proper locking function calls to your applications to guarantee thread
1276 elif test "$enable_thread_safety" = yes; then
1277 AC_MSG_CHECKING([thread safety of required library functions])
1281 CFLAGS="$CFLAGS $PTHREAD_CFLAGS -DIN_CONFIGURE"
1282 LIBS="$LIBS $PTHREAD_LIBS"
1283 AC_TRY_RUN([#include "$srcdir/src/tools/thread/thread_test.c"],
1284 [AC_MSG_RESULT(yes)],
1287 *** Thread test program failed. Your platform is not thread-safe.
1288 *** Check the file 'config.log'for the exact reason.
1290 *** You can use the configure option --enable-thread-safety-force
1291 *** to force threads to be enabled. However, you must then run
1292 *** the program in src/tools/thread and add locking function calls
1293 *** to your applications to guarantee thread safety.
1295 [AC_MSG_RESULT(maybe)
1297 *** Skipping thread test program because of cross-compile build.
1298 *** Run the program in src/tools/thread on the target machine.
1304 # prepare build tree if outside source tree
1305 # Note 1: test -ef might not exist, but it's more reliable than `pwd`.
1306 # Note 2: /bin/pwd might be better than shell's built-in at getting
1307 # a symlink-free name.
1308 if ( test "$srcdir" -ef . ) >/dev/null 2>&1 || test "`cd $srcdir && /bin/pwd`" = "`/bin/pwd`"; then
1312 if test "$no_create" != yes; then
1313 _AS_ECHO_N([preparing build tree... ])
1314 pgac_abs_top_srcdir=`cd "$srcdir" && pwd`
1315 $SHELL "$ac_aux_dir/prep_buildtree" "$pgac_abs_top_srcdir" "." \
1316 || AC_MSG_ERROR(failed)
1320 AC_SUBST(vpath_build)
1323 AC_CONFIG_FILES([GNUmakefile src/Makefile.global])
1326 src/backend/port/dynloader.c:src/backend/port/dynloader/${template}.c
1327 src/backend/port/pg_sema.c:${SEMA_IMPLEMENTATION}
1328 src/backend/port/pg_shmem.c:${SHMEM_IMPLEMENTATION}
1329 src/include/dynloader.h:src/backend/port/dynloader/${template}.h
1330 src/include/pg_config_os.h:src/include/port/${template}.h
1331 src/Makefile.port:src/makefiles/Makefile.${template}
1334 if test "$PORTNAME" = "win32"; then
1335 AC_CONFIG_COMMANDS([check_win32_symlinks],[
1336 # Links sometimes fail undetected on Mingw -
1337 # so here we detect it and warn the user
1338 for FILE in $CONFIG_LINKS
1340 # test -e works for symlinks in the MinGW console
1341 test -e `expr "$FILE" : '\([[^:]]*\)'` || AC_MSG_WARN([*** link for $FILE - please fix by hand])
1346 AC_CONFIG_HEADERS([src/include/pg_config.h],
1348 # Update timestamp for pg_config.h (see Makefile.global)
1349 echo >src/include/stamp-h