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dnl Process this file with autoconf to produce a configure script.

dnl Developers, please strive to achieve this order:
dnl
dnl 0. Initialization and options processing
dnl 1. Programs
dnl 2. Libraries
dnl 3. Header files
dnl 4. Types
dnl 5. Structures
dnl 6. Compiler characteristics
dnl 7. Functions, global variables
dnl 8. System services
dnl
dnl Read the Autoconf manual for details.

dnl The GNU folks apparently haven't heard that some people don't use
dnl Texinfo. Use this sorcery to use "docdir" instead of "infodir".
define([info], [doc])
define([infodir], [docdir])
AC_INIT(src/backend/access/common/heaptuple.c)
undefine([infodir])
undefine([info])

AC_PREFIX_DEFAULT(/usr/local/pgsql)
AC_CONFIG_HEADER(src/include/pg_config.h)

AC_PREREQ(2.13)
AC_CONFIG_AUX_DIR(config)

VERSION='7.2.3'
AC_SUBST(VERSION)
AC_DEFINE_UNQUOTED(PG_VERSION, "$VERSION")

unset CDPATH

AC_CANONICAL_HOST
AC_SUBST(host)
AC_SUBST(host_cpu)
AC_SUBST(host_os)

template=
AC_MSG_CHECKING([which template to use])

PGAC_ARG_REQ(with, template, [],
[
  case $withval in
    list) echo; ls "$srcdir/src/template"; exit;;
    *) if test -f "$srcdir/src/template/$with_template" ; then
              template=$withval
            else
              AC_MSG_ERROR(['$withval' is not a valid template name. Use 'list' for a list.])
            fi;;
  esac
],
[
  # --with-template not given

case $host_os in
     aix*) template=aix ;;
    beos*) template=beos ;;
    bsdi*) template=bsdi ;;
  cygwin*) template=win ;;
  darwin*) template=darwin ;;
    dgux*) template=dgux ;;
 freebsd*) template=freebsd ;;
    hpux*) template=hpux ;;
    irix*) template=irix5 ;;
   linux*) template=linux ;;
  netbsd*) template=netbsd ;;
nextstep*) template=nextstep ;;
 openbsd*) template=openbsd ;;
     osf*) template=osf ;;
     qnx*) template=qnx4 ;;
     sco*) template=sco ;;
 solaris*) template=solaris ;;
   sunos*) template=sunos4 ;;
 sysv4.2*)
        case $host_vendor in
          univel) template=univel ;;
        esac ;;
   sysv4*) template=svr4 ;;
   sysv5*) template=unixware ;;
  ultrix*) template=ultrix4 ;;
esac

  if test x"$template" = x"" ; then
    AC_MSG_ERROR([[
*******************************************************************
PostgreSQL has apparently not been ported to your platform yet.
To try a manual configuration, look into the src/template directory
for a similar platform and use the '--with-template=' option.

Please also contact <pgsql-ports@postgresql.org> to see about
rectifying this. Include the above 'checking host system type...'
line.
*******************************************************************
]])
  fi

])

AC_MSG_RESULT([$template])

PORTNAME=$template
AC_SUBST(PORTNAME)

AC_LINK_FILES([src/backend/port/dynloader/${template}.c], [src/backend/port/dynloader.c])
AC_LINK_FILES([src/backend/port/dynloader/${template}.h], [src/include/dynloader.h])
AC_LINK_FILES([src/include/port/${template}.h], [src/include/pg_config_os.h])
AC_LINK_FILES([src/makefiles/Makefile.${template}], [src/Makefile.port])

# Pick right test-and-set (TAS) code. Most platforms have inline
# assembler code in src/include/storage/s_lock.h, so we just use
# a dummy file here.
case $host in
  *-*-hpux*) need_tas=yes; tas_file=hpux.s ;;
  sparc-*-solaris*) need_tas=yes; tas_file=solaris_sparc.s ;;
  i?86-*-solaris*) need_tas=yes; tas_file=solaris_i386.s ;;
  *) need_tas=no; tas_file=dummy.s ;;
esac
AC_LINK_FILES([src/backend/port/tas/${tas_file}], [src/backend/port/tas.s])

if test "$need_tas" = yes ; then
  TAS=tas.o
fi
AC_SUBST(TAS)



##
## Command line options
##


#
# Add non-standard directories to the include path
#
PGAC_ARG_REQ(with, includes, [ --with-includes=DIRS look for additional header files in DIRS])


#
# Add non-standard directories to the library search path
#
PGAC_ARG_REQ(with, libraries, [ --with-libraries=DIRS look for additional libraries in DIRS],
             [LIBRARY_DIRS=$withval])

PGAC_ARG_REQ(with, libs, [ --with-libs=DIRS alternative spelling of --with-libraries],
             [LIBRARY_DIRS=$withval])


#
# Locale (--enable-locale)
#
AC_MSG_CHECKING([whether to build with locale support])
PGAC_ARG_BOOL(enable, locale, no, [ --enable-locale enable locale support],
              [AC_DEFINE([USE_LOCALE], 1,
                         [Set to 1 if you want LOCALE support (--enable-locale)])])
AC_MSG_RESULT([$enable_locale])


#
# Character set recode (--enable-recode)
#
AC_MSG_CHECKING([whether to build with recode support])
PGAC_ARG_BOOL(enable, recode, no, [ --enable-recode enable character set recode support],
              [AC_DEFINE([CYR_RECODE], 1,
                         [Set to 1 if you want cyrillic recode support (--enable-recode)])])
AC_MSG_RESULT([$enable_recode])


#
# Multibyte support
#
MULTIBYTE=
AC_MSG_CHECKING([whether to build with multibyte character support])

PGAC_ARG_OPTARG(enable, multibyte, [ --enable-multibyte enable multibyte character support],
[MULTIBYTE=SQL_ASCII],
[
  case $enableval in
    SQL_ASCII|EUC_JP|EUC_CN|EUC_KR|EUC_TW|UNICODE|MULE_INTERNAL|LATIN1|LATIN2|LATIN3|LATIN4|LATIN5|LATIN6|LATIN7|LATIN8|LATIN9|LATIN10|KOI8|WIN|ALT|ISO_8859_5|ISO_8859_6|ISO_8859_7|ISO_8859_8)
      MULTIBYTE=$enableval;;
    *)
      AC_MSG_ERROR(
[argument to --enable-multibyte must be one of:
  SQL_ASCII, EUC_JP, EUC_CN, EUC_KR, EUC_TW,
  UNICODE, MULE_INTERNAL,
  LATIN1, LATIN2, LATIN3, LATIN4, LATIN5,
  LATIN6, LATIN7, LATIN8, LATIN9, LATIN10,
  KOI8, WIN, ALT,
  ISO_8859_5, ISO_8859_6, ISO_8859_7, ISO_8859_8
Or do not specify an argument to the option to use the default.]);;
  esac
],
[
  AC_DEFINE(MULTIBYTE, 1, [Set to 1 if you want to use multibyte characters (--enable-multibyte)])
  AC_MSG_RESULT([yes, default $MULTIBYTE])
],
[AC_MSG_RESULT(no)])

AC_SUBST(MULTIBYTE)

#
# NLS
#
AC_MSG_CHECKING([whether NLS is wanted])
PGAC_ARG_OPTARG(enable, nls,
                [ --enable-nls[=LANGUAGES] enable Native Language Support],
                [],
                [WANTED_LANGUAGES=$enableval],
                [AC_DEFINE(ENABLE_NLS)])
AC_MSG_RESULT([$enable_nls])
AC_SUBST(enable_nls)
AC_SUBST(WANTED_LANGUAGES)

#
# Default port number (--with-pgport), default 5432
#
AC_MSG_CHECKING([for default port number])
PGAC_ARG_REQ(with, pgport, [ --with-pgport=PORTNUM change default port number [5432]],
             [default_port=$withval],
             [default_port=5432])
AC_MSG_RESULT([$default_port])
# Need both of these because some places want an integer and some a string
AC_DEFINE_UNQUOTED(DEF_PGPORT, ${default_port})
AC_DEFINE_UNQUOTED(DEF_PGPORT_STR, "${default_port}")
AC_SUBST(default_port)

#
# Maximum number of allowed connections (--with-maxbackends), default 32
#
AC_MSG_CHECKING([for default soft limit on number of connections])
PGAC_ARG_REQ(with, maxbackends, [ --with-maxbackends=N set default maximum number of connections [32]],
             [],
             [with_maxbackends=32])
AC_MSG_RESULT([$with_maxbackends])
AC_DEFINE_UNQUOTED([DEF_MAXBACKENDS], [$with_maxbackends],
                   [The default soft limit on the number of concurrent connections, i.e., the default for the postmaster -N switch (--with-maxbackends)])


#
# Option to disable shared libraries
#
PGAC_ARG_BOOL(enable, shared, yes,
              [ --disable-shared do not build shared libraries])
AC_SUBST(enable_shared)

#
# '-rpath'-like feature can be disabled
#
PGAC_ARG_BOOL(enable, rpath, yes,
              [ --disable-rpath do not embed shared library search path in executables])
AC_SUBST(enable_rpath)


#
# --enable-debug adds -g to compiler flags
#
PGAC_ARG_BOOL(enable, debug, no,
              [ --enable-debug build with debugging symbols (-g)])


#
# C compiler
#

# For historical reasons you can also use --with-CC to specify the C compiler
# to use, although the standard way to do this is to set the CC environment
# variable.
PGAC_ARG_REQ(with, CC, [], [CC=$with_CC])

# On AIX, default compiler to xlc.
if test "$template" = aix && test -z "$CC" ; then CC=xlc; fi

# Save CFLAGS from the environment
has_environ_CFLAGS="${CFLAGS+yes}"
save_CFLAGS=$CFLAGS

AC_PROG_CC
# Read the template
. "$srcdir/src/template/$template" || exit

if test "$has_environ_CFLAGS" = yes; then
  CFLAGS=$save_CFLAGS
fi
if test "$enable_debug" = yes && test "$ac_cv_prog_cc_g" = yes; then
  CFLAGS="$CFLAGS -g"
fi
echo "using CFLAGS=$CFLAGS"
# Check if the compiler still works with the template settings
AC_PROG_CC_WORKS
AC_EXEEXT
AC_PROG_CPP
AC_PROG_GCC_TRADITIONAL
AC_SUBST(GCC)

# Create compiler version string
if test x"$GCC" = x"yes" ; then
  cc_string="GCC `${CC} --version | head -1`"
else
  cc_string=$CC
fi
AC_DEFINE_UNQUOTED(PG_VERSION_STR, ["PostgreSQL $VERSION on $host, compiled by $cc_string"], [A canonical string containing the version number, platform, and C compiler])


#
# Automatic dependency tracking
#
PGAC_ARG_BOOL(enable, depend, no, [ --enable-depend turn on automatic dependency tracking],
              [autodepend=yes])
AC_SUBST(autodepend)


#
# Enable assert checks
#
PGAC_ARG_BOOL(enable, cassert, no, [ --enable-cassert enable assertion checks (for debugging)],
              [AC_DEFINE([USE_ASSERT_CHECKING], 1,
                         [Define to 1 to build with assertion checks])])


#
# Include directories
#
ac_save_IFS=$IFS
IFS="${IFS}:"
# SRCH_INC comes from the template file
for dir in $with_includes $SRCH_INC; do
  if test -d "$dir"; then
    INCLUDES="$INCLUDES -I$dir"
  else
    AC_MSG_WARN([*** Include directory $dir does not exist.])
  fi
done
IFS=$ac_save_IFS
AC_SUBST(INCLUDES)


#
# Library directories
#
ac_save_IFS=$IFS
IFS="${IFS}:"
# LIBRARY_DIRS comes from command line, SRCH_LIB from template file.
for dir in $LIBRARY_DIRS $SRCH_LIB; do
  if test -d "$dir"; then
    LIBDIRS="$LIBDIRS -L$dir"
  else
    AC_MSG_WARN([*** Library directory $dir does not exist.])
  fi
done
IFS=$ac_save_IFS


#
# Tcl/Tk
#
AC_MSG_CHECKING([whether to build with Tcl])
PGAC_ARG_BOOL(with, tcl, no, [ --with-tcl build Tcl and Tk interfaces])
AC_MSG_RESULT([$with_tcl])
AC_SUBST([with_tcl])

# If Tcl is enabled (above) then Tk is also, unless the user disables it using --without-tk
AC_MSG_CHECKING([whether to build with Tk])
if test "$with_tcl" = yes; then
  PGAC_ARG_BOOL(with, tk, yes, [ --without-tk do not build Tk interfaces if Tcl is enabled])
else
  with_tk=no
fi
AC_MSG_RESULT([$with_tk])
AC_SUBST([with_tk])


# We see if the path to the TCL/TK configuration scripts is specified.
# This will override the use of tclsh to find the paths to search.

PGAC_ARG_REQ(with, tclconfig, [ --with-tclconfig=DIR tclConfig.sh and tkConfig.sh are in DIR])

# We see if the path to the TK configuration scripts is specified.
# This will override the use of tclsh to find the paths to search.

PGAC_ARG_REQ(with, tkconfig, [ --with-tkconfig=DIR tkConfig.sh is in DIR])

#
# Optionally build Perl modules (Pg.pm and PL/Perl)
#
AC_MSG_CHECKING([whether to build Perl modules])
PGAC_ARG_BOOL(with, perl, no, [ --with-perl build Perl interface and PL/Perl])
AC_MSG_RESULT([$with_perl])
AC_SUBST(with_perl)

#
# Optionally build Python interface module
#
AC_MSG_CHECKING([whether to build Python modules])
PGAC_ARG_BOOL(with, python, no, [ --with-python build Python interface module])
AC_MSG_RESULT([$with_python])
AC_SUBST(with_python)

#
# Optionally build the Java/JDBC tools
#
AC_MSG_CHECKING([whether to build Java/JDBC tools])
PGAC_ARG_BOOL(with, java, no, [ --with-java build JDBC interface and Java tools],
[AC_MSG_RESULT(yes)
PGAC_PATH_ANT
if test -z "$ANT"; then
  AC_MSG_ERROR([Ant is required to build Java components])
fi],
[AC_MSG_RESULT(no)])
AC_SUBST(with_java)

dnl A note on the Kerberos and OpenSSL options:
dnl
dnl The user can give an argument to the option in order the specify
dnl the base path of the respective installation (what he specified
dnl perhaps as --prefix). If no argument is given ($withval is "yes")
dnl then we take the path where the package installs by default. This
dnl way the user doesn't have to use redundant --with-includes and
dnl --with-libraries options, but he can still use them if the layout
dnl is non-standard.

#
# Kerberos 4
#
PGAC_ARG_OPTARG(with, krb4, [ --with-krb4[=DIR] build with Kerberos 4 support [/usr/athena]],
                [krb4_prefix=/usr/athena],
                [krb4_prefix=$withval],
[
  AC_MSG_RESULT([building with Kerberos 4 support])
  AC_DEFINE(KRB4, 1, [Define if you are building with Kerberos 4 support.])

  if test -d "$krb4_prefix/include"; then
    INCLUDES="$INCLUDES -I$krb4_prefix/include"
  fi
  if test -d "$krb4_prefix/lib"; then
    LIBDIRS="$LIBDIRS -L$krb4_prefix/lib"
  fi

  krb_srvtab="/etc/srvtab"
])

AC_SUBST(with_krb4)


#
# Kerberos 5
#
PGAC_ARG_OPTARG(with, krb5, [ --with-krb5[=DIR] build with Kerberos 5 support [/usr/athena]],
              [krb5_prefix=/usr/athena],
              [krb5_prefix=$withval],
[
  AC_MSG_RESULT([building with Kerberos 5 support])
  AC_DEFINE(KRB5, 1, [Define if you are building with Kerberos 5 support.])

  if test -d "$krb5_prefix/include"; then
    INCLUDES="$INCLUDES -I$krb5_prefix/include"
  fi
  if test -d "$krb5_prefix/lib"; then
    LIBDIRS="$LIBDIRS -L$krb5_prefix/lib"
  fi

  krb_srvtab="FILE:\$(sysconfdir)/krb5.keytab"
])

AC_SUBST(with_krb5)


# Using both Kerberos 4 and Kerberos 5 at the same time isn't going to work.
if test "$with_krb4" = yes && test "$with_krb5" = yes ; then
  AC_MSG_ERROR([Kerberos 4 and Kerberos 5 support cannot be combined])
fi

AC_SUBST(krb_srvtab)


#
# Kerberos configuration parameters
#
PGAC_ARG_REQ(with, krb-srvnam,
             [ --with-krb-srvnam=NAME name of the service principal in Kerberos [postgres]],
             [],
             [with_krb_srvnam="postgres"])
AC_DEFINE_UNQUOTED([PG_KRB_SRVNAM], ["$with_krb_srvnam"],
                   [The name of the PostgreSQL service principal in Kerberos])


#
# PAM
#
AC_MSG_CHECKING([whether to build with PAM support])
PGAC_ARG_BOOL(with, pam, no,
              [ --with-pam build with PAM support],
              [AC_DEFINE([USE_PAM], 1, [Define to build with PAM support])])
AC_MSG_RESULT([$with_pam])
AC_SUBST(with_pam)


#
# OpenSSL
#
PGAC_ARG_OPTARG(with, openssl,
                [ --with-openssl[=DIR] build with OpenSSL support [/usr/local/ssl]],
                [openssl_prefix=/usr/local/ssl],
                [openssl_prefix=$withval],
[
  AC_MSG_RESULT([building with OpenSSL support])
  AC_DEFINE([USE_SSL], 1, [Define to build with (Open)SSL support])

  if test -d "${openssl_prefix}/include" ; then
    INCLUDES="$INCLUDES -I${openssl_prefix}/include"
  fi
  if test -d "${openssl_prefix}/lib" ; then
    LIBDIRS="$LIBDIRS -L${openssl_prefix}/lib"
  fi
])

AC_SUBST(with_openssl)



#
# Optionally enable the building of the ODBC driver
#
 
# Old option name
if test "${with_odbc+set}" = set && test "${enable_odbc+set}" != set; then
  enable_odbc=$with_odbc
fi
 
AC_MSG_CHECKING([whether to build the ODBC driver])
PGAC_ARG_BOOL(enable, odbc, no, [ --enable-odbc build the ODBC driver package])
PGAC_ARG_BOOL(with, unixodbc, no, [ --with-unixodbc build ODBC driver for unixODBC])
PGAC_ARG_BOOL(with, iodbc, no, [ --with-iodbc build ODBC driver for iODBC])
if test "$with_unixodbc" = yes && test "$with_iodbc" = yes; then
  AC_MSG_ERROR([ODBC driver cannot be built for both unixODBC and iODBC])
fi
if test "$with_unixodbc" = yes || test "$with_iodbc" = yes; then
  enable_odbc=yes
fi
case $enable_odbc:$with_unixodbc:$with_iodbc in
  yes:no:no) AC_MSG_RESULT([yes (stand-alone)]);;
  yes:yes:no) AC_MSG_RESULT([yes (unixODBC)]); AC_DEFINE(WITH_UNIXODBC);;
  yes:no:yes) AC_MSG_RESULT([yes (iODBC)]); AC_DEFINE(WITH_IODBC);;
  no:*) AC_MSG_RESULT(no);;
esac
AC_SUBST([enable_odbc])
AC_SUBST([with_unixodbc])
AC_SUBST([with_iodbc])


# Allow for overriding the default location of the odbcinst.ini
# file which is normally ${sysconfdir} (i.e., ${prefix}/etc).
PGAC_ARG_REQ(with, odbcinst,
             [ --with-odbcinst=DIR default directory for odbcinst.ini [sysconfdir]],
             [odbcinst_ini_dir=$withval],
             [odbcinst_ini_dir="\${sysconfdir}"])
AC_SUBST([odbcinst_ini_dir])



# Assume system is ELF if it predefines __ELF__ as 1,
# otherwise believe host_os based default.
case $host_os in
    freebsd1*|freebsd2*) elf=no;;
    freebsd3*|freebsd4*) elf=yes;;
esac

AC_EGREP_CPP(yes,
[#if __ELF__
  yes
#endif
],
[ELF_SYS=true],
[if test "X$elf" = "Xyes" ; then
  ELF_SYS=true
else
  ELF_SYS=
fi])
AC_SUBST(ELF_SYS)



#
# Optionally build C++ code (i.e., libpq++)
#
AC_MSG_CHECKING([whether to build C++ modules])
PGAC_ARG_OPTARG(with, CXX, [ --with-CXX build C++ modules (libpq++)],
                [],
                [CXX=$withval],
[
  AC_MSG_RESULT(yes)

  # If the user has specified CXXFLAGS in the environment, leave it
  # alone, else use a default.

  has_environ_CXXFLAGS="${CXXFLAGS+yes}"
  AC_PROG_CXX
  if test "$has_environ_CXXFLAGS" != yes; then
    if test "$GXX" = yes; then
      CXXFLAGS=-O2
    else
      case $template in
osf) CXXFLAGS='-O4 -Olimit 2000' ;;
        unixware) CXXFLAGS='-O' ;;
*) CXXFLAGS= ;;
      esac
    fi
  fi
  if test "$enable_debug" = yes && test "$ac_cv_prog_cxx_g" = yes; then
    CXXFLAGS="$CXXFLAGS -g"
  fi
  echo "using CXXFLAGS=$CXXFLAGS"

  AC_PROG_CXXCPP
  AC_SUBST(GXX)
  PGAC_CLASS_STRING
  PGAC_CXX_NAMESPACE_STD
],
[AC_MSG_RESULT(no)])
AC_SUBST(with_CXX)

CPPFLAGS="$CPPFLAGS $INCLUDES"
LDFLAGS="$LDFLAGS $LIBDIRS"

echo "using CPPFLAGS=$CPPFLAGS"
echo "using LDFLAGS=$LDFLAGS"


AC_PROG_AWK
PGAC_PATH_FLEX
AC_PROG_LN_S
AC_PROG_LD
AC_SUBST(LD)
AC_SUBST(with_gnu_ld)
case $host_os in sysv5*)
  AC_CACHE_CHECK([whether ld -R works], [pgac_cv_prog_ld_R],
  [
    pgac_save_LDFLAGS=$LDFLAGS; LDFLAGS="$LDFLAGS -Wl,-R/usr/lib"
    AC_TRY_LINK([], [], [pgac_cv_prog_ld_R=yes], [pgac_cv_prog_ld_R=no])
    LDFLAGS=$pgac_save_LDFLAGS
  ])
  ld_R_works=$pgac_cv_prog_ld_R
  AC_SUBST(ld_R_works)
esac
AC_PROG_RANLIB
AC_CHECK_PROGS(LORDER, lorder)
AC_PATH_PROG(TAR, tar)

AC_CHECK_PROGS(YACC, ['bison -y'])
if test -z "$YACC"; then
  AC_MSG_WARN([
*** Without Bison you will not be able to build PostgreSQL from CVS or
*** change any of the parser definition files. You can obtain Bison from
*** a GNU mirror site. (If you are using the official distribution of
*** PostgreSQL then you do not need to worry about this because the Bison
*** output is pre-generated.) To use a different yacc program (possible,
*** but not recommended), set the environment variable YACC before running
*** 'configure'.])
fi
AC_SUBST(YFLAGS)

if test "$with_tk" = yes; then
    AC_PATH_PROG(WISH, wish)
    test -z "$WISH" && AC_MSG_ERROR(['wish' is required for Tk support])
fi

PGAC_PATH_PERL
if test "$with_perl" = yes; then
  PGAC_CHECK_PERL_DIRS
fi

if test "$with_python" = yes; then
  PGAC_PATH_PYTHON
  PGAC_CHECK_PYTHON_MODULE_SETUP
  PGAC_CHECK_PYTHON_EMBED_SETUP
fi


##
## Libraries
##

PGAC_CHECK_READLINE
AC_SEARCH_LIBS(using_history, history, [AC_DEFINE(HAVE_HISTORY_FUNCTIONS)])

if test "$PORTNAME" != "aix" -a "$PORTNAME" != "alpha"
then
AC_CHECK_LIB(bsd, main)
fi
AC_CHECK_LIB(util, setproctitle)
AC_CHECK_LIB(m, main)
AC_CHECK_LIB(dl, main)
AC_CHECK_LIB(socket, main)
AC_CHECK_LIB(nsl, main)
AC_CHECK_LIB(ipc, main)
AC_CHECK_LIB(IPC, main)
AC_CHECK_LIB(lc, main)
AC_CHECK_LIB(dld, main)
AC_CHECK_LIB(ld, main)
AC_CHECK_LIB(compat, main)
AC_CHECK_LIB(BSD, main)
AC_CHECK_LIB(gen, main)
AC_CHECK_LIB(PW, main)
AC_CHECK_LIB(resolv, main)
# QNX:
AC_CHECK_LIB([[unix]], main)
AC_SEARCH_LIBS(crypt, crypt)
# BeOS:
AC_CHECK_LIB(bind, __inet_ntoa)
# Only consider libz to be present if we find <zlib.h> as well;
# furthermore, check that <zlib.h> defines z_streamp (versions before
# about 1.0.4 did not). While we could work around the lack of z_streamp,
# it seems unwise to encourage people to use such old zlib versions...
AC_EGREP_HEADER(z_streamp, zlib.h, [
AC_CHECK_LIB(z, inflate)
])
# Solaris:
AC_SEARCH_LIBS(fdatasync, [rt posix4])

if test "$with_krb4" = yes ; then
  AC_CHECK_LIB(des, [des_encrypt], [], [AC_MSG_ERROR([library 'des' is required for Kerberos 4])])
  AC_CHECK_LIB(krb, [krb_sendauth], [], [AC_MSG_ERROR([library 'krb' is required for Kerberos 4])])
fi

if test "$with_krb5" = yes ; then
  AC_CHECK_LIB(com_err, [com_err], [], [AC_MSG_ERROR([library 'com_err' is required for Kerberos 5])])
  AC_CHECK_LIB(crypto, [krb5_encrypt], [],
    [AC_CHECK_LIB(k5crypto, [krb5_encrypt], [], [AC_MSG_ERROR([library 'crypto' or 'k5crypto' is required for Kerberos 5])])])
  AC_CHECK_LIB(krb5, [krb5_sendauth], [], [AC_MSG_ERROR([library 'krb5' is required for Kerberos 5])])
fi

if test "$with_openssl" = yes ; then
  dnl Order matters!
  AC_CHECK_LIB(crypto, [CRYPTO_new_ex_data], [], [AC_MSG_ERROR([library 'crypto' is required for OpenSSL])])
  AC_CHECK_LIB(ssl, [SSL_library_init], [], [AC_MSG_ERROR([library 'ssl' is required for OpenSSL])])
fi

if test "$with_pam" = yes ; then
  AC_CHECK_LIB(pam, [pam_start], [], [AC_MSG_ERROR([library 'pam' is required for PAM])])
fi

if test "$enable_nls" = yes ; then
  PGAC_CHECK_GETTEXT
fi

##
## Header files
##
dnl sys/socket.h and sys/types.h are required by AC_FUNC_ACCEPT_ARGTYPES
AC_CHECK_HEADERS([crypt.h dld.h endian.h fp_class.h getopt.h ieeefp.h pwd.h sys/ipc.h sys/pstat.h sys/select.h sys/sem.h sys/socket.h sys/shm.h sys/types.h sys/un.h termios.h kernel/OS.h kernel/image.h SupportDefs.h])

dnl At least on IRIX, cpp test for netinet/tcp.h will fail unless netinet/in.h
dnl is included first. So can't just use AC_CHECK_HEADERS; do it this way:
AC_CHECK_HEADERS([netinet/in.h])
AC_MSG_CHECKING([for netinet/tcp.h])
AC_TRY_CPP([
#ifdef HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
#include <netinet/tcp.h>
], [AC_DEFINE(HAVE_NETINET_TCP_H) AC_MSG_RESULT(yes)],
[AC_MSG_RESULT(no)])

PGAC_HEADER_STRING

AC_CHECK_HEADERS([readline/readline.h readline.h], [break])
AC_CHECK_HEADERS([readline/history.h history.h], [break])

if test "$with_krb4" = yes ; then
  AC_CHECK_HEADER(krb.h, [], [AC_MSG_ERROR([header file <krb.h> is required for Kerberos 4])])
fi

if test "$with_krb5" = yes ; then
  AC_CHECK_HEADER(krb5.h, [], [AC_MSG_ERROR([header file <krb5.h> is required for Kerberos 5])])
  AC_CHECK_HEADER(com_err.h, [], [AC_MSG_ERROR([header file <com_err.h> is required for Kerberos 5])])
fi

if test "$with_openssl" = yes ; then
  AC_CHECK_HEADER([openssl/ssl.h], [], [AC_MSG_ERROR([header file <openssl/ssl.h> is required for OpenSSL])])
  AC_CHECK_HEADER([openssl/err.h], [], [AC_MSG_ERROR([header file <openssl/err.h> is required for OpenSSL])])
fi

if test "$with_pam" = yes ; then
  AC_CHECK_HEADER([security/pam_appl.h], [], [AC_MSG_ERROR([header file <security/pam_appl.h> is required for PAM])])
fi


##
## Types, structures, compiler characteristics
##
AC_C_CONST
AC_C_INLINE
AC_C_STRINGIZE
PGAC_C_SIGNED
PGAC_C_VOLATILE
AC_STRUCT_TIMEZONE
PGAC_UNION_SEMUN
PGAC_STRUCT_CMSGCRED
PGAC_STRUCT_FCRED
PGAC_STRUCT_SOCKCRED
PGAC_STRUCT_SOCKADDR_UN

##
## Functions, global variables
##
PGAC_VAR_INT_TIMEZONE
AC_FUNC_ACCEPT_ARGTYPES
PGAC_FUNC_GETTIMEOFDAY_1ARG

# SunOS doesn't handle negative byte comparisons properly with +/- return
PGAC_FUNC_MEMCMP

AC_CHECK_FUNCS([fcvt getopt_long memmove pstat setproctitle setsid sigprocmask sysconf waitpid dlopen fdatasync])

dnl Check whether <unistd.h> declares fdatasync().
AC_EGREP_HEADER(fdatasync, unistd.h, AC_DEFINE(HAVE_FDATASYNC_DECL))

AC_CACHE_CHECK([for PS_STRINGS], [pgac_cv_var_PS_STRINGS],
[AC_TRY_LINK(
[#include <machine/vmparam.h>
#include <sys/exec.h>
],
[PS_STRINGS->ps_nargvstr = 1;
PS_STRINGS->ps_argvstr = "foo";],
[pgac_cv_var_PS_STRINGS=yes],
[pgac_cv_var_PS_STRINGS=no])])
if test "$pgac_cv_var_PS_STRINGS" = yes ; then
  AC_DEFINE([HAVE_PS_STRINGS], [], [Define if the PS_STRINGS thing exists.])
fi

dnl We use our snprintf.c emulation if either snprintf() or vsnprintf()
dnl is missing. Yes, there are machines that have only one.
dnl We may also decide to use snprintf.c if snprintf() is present but does
dnl not have working "long long int" support -- see below.
SNPRINTF=''
AC_CHECK_FUNC(snprintf,
AC_DEFINE(HAVE_SNPRINTF),
SNPRINTF='snprintf.o')
AC_CHECK_FUNC(vsnprintf,
AC_DEFINE(HAVE_VSNPRINTF),
SNPRINTF='snprintf.o')
AC_SUBST(SNPRINTF)
dnl Check whether <stdio.h> declares snprintf() and vsnprintf(); if not,
dnl include/c.h will provide declarations. Note this is a separate test
dnl from whether the functions exist in the C library --- there are systems
dnl that have the functions but don't bother to declare them :-(
dnl Note: simple-minded pattern here will do wrong thing if stdio.h
dnl declares vsnprintf() but not snprintf(). Hopefully there are no
dnl systems that are *that* brain-damaged...
AC_EGREP_HEADER(snprintf, stdio.h, AC_DEFINE(HAVE_SNPRINTF_DECL))
AC_EGREP_HEADER(vsnprintf, stdio.h, AC_DEFINE(HAVE_VSNPRINTF_DECL))

# do this one the hard way in case isinf() is a macro
AC_CACHE_CHECK([for isinf], ac_cv_func_isinf,
[AC_TRY_LINK(
[#include <math.h>
],
[double x = 0.0; int res = isinf(x);],
[ac_cv_func_isinf=yes],
[ac_cv_func_isinf=no])])

if test $ac_cv_func_isinf = yes ; then
  AC_DEFINE(HAVE_ISINF)
  ISINF=
else
  ISINF='isinf.o'
  # Look for a way to implement a substitute for isinf()
  AC_CHECK_FUNCS([fpclass fp_class fp_class_d class], [break])
fi
AC_SUBST(ISINF)

AC_CHECK_FUNC(getrusage,
AC_DEFINE(HAVE_GETRUSAGE),
GETRUSAGE='getrusage.o')
AC_SUBST(GETRUSAGE)
AC_CHECK_FUNC(srandom,
AC_DEFINE(HAVE_SRANDOM),
SRANDOM='srandom.o')
AC_SUBST(SRANDOM)
AC_CHECK_FUNC(gethostname,
AC_DEFINE(HAVE_GETHOSTNAME),
GETHOSTNAME='gethostname.o')
AC_SUBST(GETHOSTNAME)
AC_CHECK_FUNC(random,
AC_DEFINE(HAVE_RANDOM),
MISSING_RANDOM='random.o')
AC_SUBST(MISSING_RANDOM)
AC_CHECK_FUNC(inet_aton,
AC_DEFINE(HAVE_INET_ATON),
INET_ATON='inet_aton.o')
AC_SUBST(INET_ATON)
AC_CHECK_FUNC(strerror,
AC_DEFINE(HAVE_STRERROR),
STRERROR='strerror.o')
AC_SUBST(STRERROR)
AC_CHECK_FUNC(strdup,
AC_DEFINE(HAVE_STRDUP),
STRDUP='../../utils/strdup.o')
AC_SUBST(STRDUP)
AC_CHECK_FUNC(strtol,
AC_DEFINE(HAVE_STRTOL),
STRTOL='strtol.o')
AC_SUBST(STRTOL)
AC_CHECK_FUNC(strtoul,
AC_DEFINE(HAVE_STRTOUL),
STRTOUL='strtoul.o')
AC_SUBST(STRTOUL)
AC_CHECK_FUNC(strcasecmp,
AC_DEFINE(HAVE_STRCASECMP),
STRCASECMP='strcasecmp.o')
AC_SUBST(STRCASECMP)
AC_CHECK_FUNC(cbrt,
AC_DEFINE(HAVE_CBRT),
AC_CHECK_LIB(m, cbrt, AC_DEFINE(HAVE_CBRT)))

# On HPUX 9, rint() is not in regular libm.a but in /lib/pa1.1/libm.a;
# this hackery with HPUXMATHLIB allows us to cope.
HPUXMATHLIB=""
case $host_cpu in
  hppa1.1)
if [[ -r /lib/pa1.1/libm.a ]] ; then
HPUXMATHLIB="-L /lib/pa1.1 -lm"
fi ;;
esac
AC_SUBST(HPUXMATHLIB)

AC_CHECK_FUNC(rint,
AC_DEFINE(HAVE_RINT),
AC_CHECK_LIB(m, rint, AC_DEFINE(HAVE_RINT), , $HPUXMATHLIB))


# Readline versions < 2.1 don't have rl_completion_append_character
AC_MSG_CHECKING([for rl_completion_append_character])
AC_TRY_LINK([#include <stdio.h>
#ifdef HAVE_READLINE_READLINE_H
# include <readline/readline.h>
#elif defined(HAVE_READLINE_H)
# include <readline.h>
#endif
],
[rl_completion_append_character = 'x';],
[AC_MSG_RESULT(yes)
AC_DEFINE(HAVE_RL_COMPLETION_APPEND_CHARACTER)],
[AC_MSG_RESULT(no)])

AC_CHECK_FUNCS([rl_completion_matches rl_filename_completion_function])


dnl Cannot use AC_CHECK_FUNC because finite may be a macro
AC_MSG_CHECKING(for finite)
AC_TRY_LINK([#include <math.h>],
[int dummy=finite(1.0);],
[AC_DEFINE(HAVE_FINITE) AC_MSG_RESULT(yes)],
AC_MSG_RESULT(no))

dnl Cannot use AC_CHECK_FUNC because sigsetjmp may be a macro
dnl (especially on GNU libc)
dnl See also comments in pg_config.h.
AC_MSG_CHECKING(for sigsetjmp)
AC_TRY_LINK([#include <setjmp.h>],
[sigjmp_buf x; sigsetjmp(x, 1);],
[AC_DEFINE(HAVE_SIGSETJMP) AC_MSG_RESULT(yes)],
AC_MSG_RESULT(no))


PGAC_ARG_BOOL(enable, syslog, no, [ --enable-syslog enable logging to syslog],
              [AC_CHECK_FUNC(syslog,
                             [AC_DEFINE([ENABLE_SYSLOG], 1,
                                        [Define to 1 if to enable the syslogging code])],
                             [AC_MSG_ERROR([no syslog interface found])])])


AC_CACHE_CHECK([for optreset], pgac_cv_var_int_optreset,
[AC_TRY_LINK([#include <unistd.h>],
  [extern int optreset; optreset = 1;],
  [pgac_cv_var_int_optreset=yes],
  [pgac_cv_var_int_optreset=no])])
if test x"$pgac_cv_var_int_optreset" = x"yes"; then
  AC_DEFINE(HAVE_INT_OPTRESET, 1)
fi


# This test makes sure that run tests work at all. Sometimes a shared
# library is found by the linker, but the runtime linker can't find it.
# This check should come after all modifications of compiler or linker
# variables, and before any other run tests.
AC_MSG_CHECKING([test program])
AC_TRY_RUN([int main() { return 0; }],
[AC_MSG_RESULT(ok)],
[AC_MSG_RESULT(failed)
AC_MSG_ERROR([[
*** Could not execute a simple test program. This may be a problem
*** related to locating shared libraries. Check the file 'config.log'
*** for the exact reason.]])],
[AC_MSG_RESULT([cross-compiling])])


dnl Check to see if we have a working 64-bit integer type.
dnl This breaks down into two steps:
dnl (1) figure out if the compiler has a 64-bit int type with working
dnl arithmetic, and if so
dnl (2) see whether snprintf() can format the type correctly. (Currently,
dnl snprintf is the only library routine we really need for int8 support.)
dnl It's entirely possible to have a compiler that handles a 64-bit type
dnl when the C library doesn't; this is fairly likely when using gcc on
dnl an older platform, for example.
dnl If there is no native snprintf() or it does not handle the 64-bit type,
dnl we force our own version of snprintf() to be used instead.
dnl Note this test must be run after our initial check for snprintf/vsnprintf.

PGAC_TYPE_64BIT_INT([long int])

if test x"$HAVE_LONG_INT_64" = x"no" ; then
  PGAC_TYPE_64BIT_INT([long long int])
fi


dnl If we need to use "long long int", figure out whether nnnLL notation works.

if [[ x"$HAVE_LONG_LONG_INT_64" = xyes ]] ; then
  AC_TRY_COMPILE([
#define INT64CONST(x) x##LL
long long int foo = INT64CONST(0x1234567890123456);
],
[],
[AC_DEFINE(HAVE_LL_CONSTANTS)],
[])
fi


dnl If we found "long int" is 64 bits, assume snprintf handles it.
dnl If we found we need to use "long long int", better check.
dnl We cope with snprintfs that use either %lld or %qd as the format.
dnl If neither works, fall back to our own snprintf emulation (which we
dnl know uses %lld).

if [[ x"$HAVE_LONG_LONG_INT_64" = xyes ]] ; then
  if [[ x$SNPRINTF = x ]] ; then
    AC_MSG_CHECKING(whether snprintf handles 'long long int' as %lld)
    AC_TRY_RUN([#include <stdio.h>
typedef long long int int64;
#define INT64_FORMAT "%lld"

int64 a = 20000001;
int64 b = 40000005;

int does_int64_snprintf_work()
{
  int64 c;
  char buf[100];

  if (sizeof(int64) != 8)
    return 0; /* doesn't look like the right size */

  c = a * b;
  snprintf(buf, 100, INT64_FORMAT, c);
  if (strcmp(buf, "800000140000005") != 0)
    return 0; /* either multiply or snprintf is busted */
  return 1;
}
main() {
  exit(! does_int64_snprintf_work());
}],
[ AC_MSG_RESULT(yes)
INT64_FORMAT='"%lld"'
],
  [ AC_MSG_RESULT(no)
    AC_MSG_CHECKING(whether snprintf handles 'long long int' as %qd)
    AC_TRY_RUN([#include <stdio.h>
typedef long long int int64;
#define INT64_FORMAT "%qd"
   
int64 a = 20000001;
int64 b = 40000005;
   
int does_int64_snprintf_work()
{
  int64 c;
  char buf[100];

  if (sizeof(int64) != 8)
    return 0; /* doesn't look like the right size */

  c = a * b;
  snprintf(buf, 100, INT64_FORMAT, c);
  if (strcmp(buf, "800000140000005") != 0)
    return 0; /* either multiply or snprintf is busted */
  return 1;
}
main() {
  exit(! does_int64_snprintf_work());
}],
  [ AC_MSG_RESULT(yes)
    INT64_FORMAT='"%qd"'
  ],
  [ AC_MSG_RESULT(no)
# Force usage of our own snprintf, since system snprintf is broken
SNPRINTF='snprintf.o'
INT64_FORMAT='"%lld"'
  ],
  [ AC_MSG_RESULT(assuming not on target machine)
# Force usage of our own snprintf, since we cannot test foreign snprintf
SNPRINTF='snprintf.o'
INT64_FORMAT='"%lld"'
  ]) ],
  [ AC_MSG_RESULT(assuming not on target machine)
# Force usage of our own snprintf, since we cannot test foreign snprintf
SNPRINTF='snprintf.o'
INT64_FORMAT='"%lld"'
  ])
  else
    # here if we previously decided we needed to use our own snprintf
    INT64_FORMAT='"%lld"'
  fi
else
  # Here if we are not using 'long long int' at all
  INT64_FORMAT='"%ld"'
fi

AC_DEFINE_UNQUOTED(INT64_FORMAT, $INT64_FORMAT)


AC_CHECK_FUNCS([strtoll strtoq], [break])
AC_CHECK_FUNCS([strtoull strtouq], [break])

dnl psql needs atexit() or on_exit()
AC_CHECK_FUNC(atexit,
[AC_DEFINE(HAVE_ATEXIT)],
[AC_CHECK_FUNCS(on_exit,
[AC_DEFINE(HAVE_ON_EXIT)],
[AC_MSG_ERROR([neither atexit() nor on_exit() found])])])

dnl Need a #define for the size of Datum (unsigned long)

AC_CHECK_SIZEOF(unsigned long, 4)
AC_DEFINE_UNQUOTED(SIZEOF_DATUM, $ac_cv_sizeof_unsigned_long)

dnl Determine memory alignment requirements for the basic C datatypes.

PGAC_CHECK_ALIGNOF(short)
PGAC_CHECK_ALIGNOF(int)
PGAC_CHECK_ALIGNOF(long)
if [[ x"$HAVE_LONG_LONG_INT_64" = xyes ]] ; then
  PGAC_CHECK_ALIGNOF(long long int)
fi
PGAC_CHECK_ALIGNOF(double)

dnl Compute maximum alignment of any basic type.
dnl We assume long's alignment is at least as strong as char, short, or int;
dnl but we must check long long (if it exists) and double.

if test $pgac_cv_alignof_double != 'sizeof(double)' ; then
  MAX_ALIGNOF=$pgac_cv_alignof_long
  if test $MAX_ALIGNOF -lt $pgac_cv_alignof_double ; then
    MAX_ALIGNOF=$pgac_cv_alignof_double
  fi
  if test x"$HAVE_LONG_LONG_INT_64" = xyes && test $MAX_ALIGNOF -lt $pgac_cv_alignof_long_long_int ; then
    MAX_ALIGNOF="$pgac_cv_alignof_long_long_int"
  fi
else
  dnl cross-compiling: assume that double's alignment is worst case
  MAX_ALIGNOF="$pgac_cv_alignof_double"
fi
AC_DEFINE_UNQUOTED(MAXIMUM_ALIGNOF, $MAX_ALIGNOF, [Define as the maximum alignment requirement of any type])


# Some platforms predefine the types int8, int16, etc. Only check
# a (hopefully) representative subset. We also check for sig_atomic_t,
# which *should* be defined per ANSI C, but is missing on some old platforms.

pgac_type_includes="\
#include <stdio.h>
#include <signal.h>
#ifdef HAVE_SUPPORTDEFS_H
#include <SupportDefs.h>
#endif"

PGAC_CHECK_TYPE(int8, [], [], [$pgac_type_includes])
PGAC_CHECK_TYPE(uint8, [], [], [$pgac_type_includes])
PGAC_CHECK_TYPE(int64, [], [], [$pgac_type_includes])
PGAC_CHECK_TYPE(uint64, [], [], [$pgac_type_includes])
PGAC_CHECK_TYPE(sig_atomic_t, [], [], [$pgac_type_includes])


PGAC_FUNC_POSIX_SIGNALS


# Check for Tcl configuration script tclConfig.sh
if test "$with_tcl" = yes; then
    PGAC_PATH_TCLCONFIGSH([$with_tclconfig])
fi

# Check for Tk configuration script tkConfig.sh
if test "$with_tk" = yes; then
    PGAC_PATH_TKCONFIGSH([$with_tkconfig $with_tclconfig])
fi


#
# Check for DocBook and tools
#
PGAC_PROG_NSGMLS
# If you don't have nsgmls you won't get very far, so save the cycles.
if test -n "$NSGMLS"; then
  PGAC_PROG_JADE
  PGAC_CHECK_DOCBOOK([3.1])
  PGAC_PATH_DOCBOOK_STYLESHEETS
  AC_CHECK_PROGS(SGMLSPL, sgmlspl)
fi

abs_top_srcdir=
AC_SUBST(abs_top_srcdir)

# prepare build tree if outside source tree
# Note 1: test -ef might not exist, but it's more reliable than `pwd`.
# Note 2: /bin/pwd might be better than shell's built-in at getting
# a symlink-free name.
if ( test "$srcdir" -ef . ) >/dev/null 2>&1 || test "`cd $srcdir && /bin/pwd`" = "`/bin/pwd`"; then
    :
else
    abs_top_srcdir=`cd $srcdir && pwd`
    echo $ac_n "preparing build tree... $ac_c" 1>&6
    /bin/sh "$srcdir/config/prep_buildtree" "$abs_top_srcdir" "." \
      || AC_MSG_ERROR(failed)
    AC_MSG_RESULT(done)
fi

AC_OUTPUT(
[
  GNUmakefile
  src/GNUmakefile
  src/Makefile.global
  src/backend/port/Makefile
],
[
# Update timestamp for pg_config.h (see Makefile.global)
test x"$CONFIG_HEADERS" != x"" && echo >src/include/stamp-h
])
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