dnl
dnl $Id$
dnl 

# Checks for libraries.
# Prefer gdbm, Berkeley DB and ndbm/dbm, in that order
AC_DEFUN(AC_PREFERRED_DB_LIB,[
  AC_CHECK_LIB(gdbm, gdbm_open,[AC_DEFINE(GDBM,1, [Whether you have GDBM]) DBM_TYPE=gdbm; DBM_LIB=-lgdbm],
  [AC_CHECK_LIB(c, dbm_open,[AC_DEFINE(NDBM,1,[ ]) DBM_TYPE=ndbm; DBM_LIB=],
   [AC_CHECK_LIB(dbm, dbm_open,[AC_DEFINE(NDBM,1,[ ]) DBM_TYPE=ndbm; DBM_LIB=-ldbm],
    [AC_CHECK_LIB(db, dbm_open,[AC_DEFINE(NDBM,1, [Whether you have NDBM]) DBM_TYPE=ndbm; DBM_LIB=-ldb],
     [DBM_TYPE=""])
    ])
   ])
  ])
  AC_MSG_CHECKING([preferred dbm library])
  if test "a$DBM_TYPE" = a; then
    AC_MSG_RESULT(none found)
    AC_MSG_WARN(No dbm library found - using built-in flatfile support)
  else
    AC_MSG_RESULT($DBM_TYPE chosen)
  fi
  PHP_SUBST(DBM_LIB)
  PHP_SUBST(DBM_TYPE)
])


PHP_ARG_WITH(db, for xDBM support,
[  --with-db               Include old xDBM support (deprecated use --with-dba)])

if test "$PHP_DB" != "no"; then

  AC_PREFERRED_DB_LIB

  if test "$DBM_LIB" = "-lgdbm"; then
    AC_CHECK_HEADER(gdbm.h, [ GDBM_INCLUDE="" ], [ 
      AC_MSG_RESULT("Try /usr/local/include/gdbm.h"); 
      AC_CHECK_HEADER(/usr/local/include/gdbm.h, [ GDBM_INCLUDE=-I/usr/local/include ],[
        AC_MSG_RESULT("Try /opt/local/include/gdbm.h");
        AC_CHECK_HEADER(/opt/local/include/gdbm.h, [ GDBM_INCLUDE=-I/opt/local/include ],[
          dnl if in /usr/pkg/include, do not add anything.  See above.
          AC_MSG_RESULT("Try /usr/pkg/include/gdbm.h");
          AC_CHECK_HEADER(/usr/pkg/include/gdbm.h, [ GDBM_INCLUDE="" ],[
            AC_MSG_RESULT("Giving up - You need to install gdbm.h somewhere");
            exit
          ])
        ])
      ])  
    ])
  fi

  if test -n "$DBM_LIB"; then
    INCLUDES="$INCLUDES $GDBM_INCLUDE"
    EXTRA_LIBS="$EXTRA_LIBS $DBM_LIB"
  fi

  PHP_NEW_EXTENSION(db, db.c)
fi