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

dnl Checks for programs.
AC_PROG_CC

AM_INIT_AUTOMAKE(pgpool-II, 2.2.5)
AC_PROG_RANLIB
AC_PROG_LIBTOOL

AM_PROG_LEX
AC_PROG_YACC

dnl Check compiler option
dnl check -Wall option
OLD_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS -Wall"
AC_MSG_CHECKING(for -Wall option)
AC_CACHE_VAL(ac_cv_wall,
  AC_TRY_COMPILE([], [char a;], ac_cv_wall=yes, ac_cv_wall=no))
echo $ac_cv_wall
if test $ac_cv_wall = no; then
   CFLAGS=$OLD_CFLAGS
fi

dnl check -Wmissing-prototypes
OLD_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS -Wmissing-prototypes"
AC_MSG_CHECKING(for -Wmissing-prototypes option)
AC_CACHE_VAL(ac_cv_wmissing_prototypes,
  AC_TRY_COMPILE([], [char a;], ac_cv_wmissing_prototypes=yes,
  ac_cv_wmissing_prototypes=no))
echo $ac_cv_wmissing_prototypes
if test $ac_cv_wmissing_prototypes = no; then
   CFLAGS=$OLD_CFLAGS
fi


dnl check -Wmissing-prototypes
OLD_CFLAGS=$CFLAGS
CFLAGS="$CFLAGS -Wmissing-declarations"
AC_MSG_CHECKING(for -Wmissing-declarations option)
AC_CACHE_VAL(ac_cv_wmissing_declarations,
  AC_TRY_COMPILE([], [char a;], ac_cv_wmissing_declarations=yes,
  ac_cv_wmissing_declarations=no))
echo $ac_cv_wmissing_declarations
if test $ac_cv_wmissing_declarations = no; then
   CFLAGS=$OLD_CFLAGS
fi

dnl Checks for libraries.
AC_CHECK_LIB(m,        main)
AC_CHECK_LIB(nsl,      main)
AC_CHECK_LIB(socket,   main)
AC_CHECK_LIB(ipc,      main)
AC_CHECK_LIB(IPC,      main)
AC_CHECK_LIB(lc,       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)

dnl Checks for header files.
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS(fcntl.h unistd.h getopt.h netinet/tcp.h netinet/in.h netdb.h sys/param.h sys/types.h sys/socket.h sys/un.h sys/time.h sys/sem.h sys/shm.h sys/select.h crypt.h sys/pstat.h)

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_TYPE_PID_T
AC_HEADER_TIME

dnl Checks for sockaddr_storage structure, members and necessary types
m4_include([ac_func_accept_argtypes.m4])
AC_CHECK_TYPES([struct sockaddr_storage], [], [],
[#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
])
AC_CHECK_MEMBERS([struct sockaddr_storage.ss_family,
                  struct sockaddr_storage.__ss_family,
                  struct sockaddr_storage.ss_len,
                  struct sockaddr_storage.__ss_len,
                  struct sockaddr.sa_len], [], [],
[#include <sys/types.h>
#ifdef HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
])

AC_CHECK_TYPES([union semun],[],[],[#include <sys/types.h>
#include <sys/ipc.h>
#include <sys/sem.h>])

dnl Checks for library functions.
AC_TYPE_SIGNAL
AC_FUNC_VPRINTF
AC_FUNC_WAIT3
AC_FUNC_ACCEPT_ARGTYPES
AC_CHECK_FUNCS(setsid select socket sigprocmask strdup strerror strftime strtok asprintf gai_strerror hstrerror pstat setproctitle)

dnl Checks for pg_config command.
AC_CHECK_PROGS(PGCONFIG, pg_config)

if test -z $PGCONFIG
then
  PGSQL_INCLUDE_DIR=/usr/local/pgsql/include
  PGSQL_LIB_DIR=/usr/local/pgsql/lib
else
  PGSQL_INCLUDE_DIR=`pg_config --includedir`
  PGSQL_LIB_DIR=`pg_config --libdir`
fi


AC_ARG_WITH(pgsql,
    [  --with-pgsql=DIR     site header files for PostgreSQL in DIR],
    [
	case "$withval" in
	"" | y | ye | yes | n | no)
	    AC_MSG_ERROR([*** You must supply an argument to the --with-pgsql option.])
	  ;;
	esac
	PGSQL_INCLUDE_DIR="$withval"/include
	PGSQL_LIB_DIR="$withval"/lib
    ])

AC_ARG_WITH(pgsql-includedir,
    [  --with-pgsql-includedir=DIR     site header files for PostgreSQL in DIR],
    [
	case "$withval" in
	"" | y | ye | yes | n | no)
	    AC_MSG_ERROR([*** You must supply an argument to the --with-pgsql-includedir option.])
	  ;;
	esac
	PGSQL_INCLUDE_DIR="$withval"
    ])

AC_ARG_WITH(pgsql-libdir,
    [  --with-pgsql-libdir=DIR     site library files for PostgreSQL in DIR],
    [
	case "$withval" in
	"" | y | ye | yes | n | no)
	    AC_MSG_ERROR([*** You must supply an argument to the --with-pgsql-libdir option.])
	  ;;
	esac
	PGSQL_LIB_DIR="$withval"
    ])

AC_ARG_WITH(pam,
    [  --with-pam     build with PAM support],
    [AC_DEFINE([USE_PAM], 1, [Define to 1 to build with PAM support. (--with-pam)])])
if test "$with_pam" = yes ; then
   AC_CHECK_LIB(pam, pam_start, [], [AC_MSG_ERROR([library 'pam' is required for PAM])])
   AC_CHECK_HEADERS(security/pam_appl.h, [],
                    [AC_CHECK_HEADERS(pam/pam_appl.h, [],
                                      [AC_MSG_ERROR([header file <security/pam_appl.h> or <pam/pam_appl.h> is required for PAM.])])])
fi

OLD_LDFLAGS="$LDFLAGS"
LDFLAGS="-L$PGSQL_LIB_DIR"
OLD_LIBS="$LIBS"
AC_CHECK_LIB(pq, PQexecPrepared, [], [AC_MSG_ERROR(libpq is not installed or libpq is old)])
AC_CHECK_FUNCS(PQprepare)
LDFLAGS="$OLD_LDFLAGS"
LIBS="$OLD_LIBS"

AC_SUBST(PGSQL_INCLUDE_DIR)
AC_SUBST(PGSQL_LIB_DIR)

# --enable(disable)-rpath option
AC_ARG_ENABLE(rpath,
    [  --disable-rpath     do not embed shared library search path in executables],
    [case "${enableval}" in
      yes) rpath=yes ;;
      no)  rpath=no ;;
      esac],
    [rpath=yes]
)
AM_CONDITIONAL([enable_rpath], test x$rpath = xyes)

AM_CONFIG_HEADER(config.h)

AC_OUTPUT([Makefile parser/Makefile pcp/Makefile])